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Title:
HINGED FOLDABLE SPEED BUMP WITH HYDRAULIC PUMP CONTROLLER
Document Type and Number:
WIPO Patent Application WO/2018/167548
Kind Code:
A1
Abstract:
The presented invention: hinged foldable speed bump with hydraulic pump controller has three major parts which act as follows: 1- The shock absorber and the only device of this bump that is visible on the surface of the road are placed in a cone with an angle of 45 degrees or less on the road, connected to the chassis by pin and bearing. In such a way that in the face of the wheel operate like a hinge includes two modes: A) Lock mode: in this case, the bumper is at the highest level and cause a bump. B) Flattening mode or leveling surface: in this case, the bump is tilted down the hinge and level with the road surface (number 1 in Fig. 2). 2- Hydraulic pump control is the unique part of this design, which acts as a shock absorber with the difference that, regardless of the amount of force applied, if this pressure is applied at a specified time, for example, 0.5 seconds, this pump is shown to be flexible and collapsible, but if this pressure is sudden and hit, this pump is locked in itself and It does not show resilience (number 2 in Fig. 2). 3- The chassis consists of a column with a width of 10cm and a length of 20cm with two edges on the sides with a width of 5cm and 90 ° bend, with two holes in the two upper edges for pin number 1 and two holes in the two lower edges for pin number 2. The two above-mentioned parts are attached to this part by pin and planted in the ground, and the other work is to transfer the pressure and weights (by the vehicle) to the depth, not the road surface.

Inventors:
NEJATI ABBAS (IR)
Application Number:
PCT/IB2017/056389
Publication Date:
September 20, 2018
Filing Date:
October 15, 2017
Export Citation:
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Assignee:
NEJATI ABBAS (IR)
International Classes:
E01F9/529
Foreign References:
GB2266552A1993-11-03
Attorney, Agent or Firm:
HAKIMSHAFAEI, Shiva et al. (IR)
Download PDF:
Claims:
Claims

Claim 1: The "hinged foldable metallic speed bump with hydraulic pump controller" with an absolutely mechanical feature which is able to differentiate between authorized and unauthorized vehicles and speeds down the speed of unauthorized vehicles is described in this invention and has the following components and elements:

The top part which is on the ground (Fig. 2) consists of a conical hinged shock absorber (1 of Fig.2) that binds to the hydraulic pump (2 of Fig.2) and chassis (4 of Fig.2) through the pin (3 of Fig.2) and bearing, and creates a bump; depending on the speed and pressure caused by the impact of the tire, it has locked up at the top and fixed, or bent and level with the road surface.

The lower part that is located underground (Fig.2) and includes: i) the chassis (4 of Fig.2), which is spotted underground, ii) The hydraulic pump (2 of Fig.2) that is inside the chassis and connected to it through a pin (3 of Fig.2). The hydraulic pump has a cylinder (Fig. l) which is filled with oil fluid (6 of Fig. l) and includes shaft (2 of Fig. l), seal (3 of Fig. l), and valve (7 of Fig. l) that is located under the piston (5 of Fig 1), which pushes the valve toward the piston due to the speed of the impact to the shock absorber and pressure applied to the oil fluid, iii) The metal piston, which has two crescent gaps (4 of Fig. l). These gaps on the piston make a motion of the piston due to the force of the oil fluid pressure caused by automobile tire encounter possible. These parts connect to each other with at least one spring (9 of Fig.1 ) and on spring holder (8 of Fig.1 ).

Claim 2: According to claim 1, the hinged foldable metallic speed bump includes an impact observer part, which is obvious on the road surface and is made of metal sheet with 30 cm width and 35 to 50 cm length that is able to bend in conic shape box from side of its length with angle of 90°. The plate is galvanized or stainless steel. Its outer surface must be ribbed. Also, the whole piece (bumper) can be made by molding and casting. The bumper depending on the road and location of the installation can be produced in larger dimensions and less (more open) angles, and connected longitudinally to each other to cover the entire width of the road. Claim 3: According to claims 1 and 2, the shock absorber is connected to chassis by pin 1 and bearing with an angle of 45° and it bends downside and sets the level to the road, no matter in which direction pressure is applied.

Claim 4: According to claims 1, 2 and 3, when bending, the shock absorber moves the piston inside cylinder beneath, through the shaft that is connected to, which is filled with oil fluid.

Claim 5: According to claim 1, the invention includes a chassis, which is combined from a pile having two edges on each side, with an angle of 90°. And there are two holes in upper edge for pin number 1 and two holes on lower edge for pin number 2; that parts like hydraulic pump and pins are set on it and is spotted underground and connected to shock holder

Claim 6: According to claim 1, the invention includes a hydraulic pump which includes a cylinder in shape of a metal tube with 3 cm diameter and 10 cm length, a bottom is closed and it's filled with oil fluid.

Claim 7: According to claims 1 and 6, cylinder has a metal rod with 15 cm length which is thread 5 cm on one side and connected the internal cylinder parts, and its feature is connection and relation of piston with conic part and shock absorber of speed bump

Claim 8: According to claims 1 and 6, the cylinder has a seal at entering of it, which prevents oil fluid leaking and external solids entering to the cylinder.

Claim 9: According to the claims 1 and 6, the cylinder has a metal piston with 3 cm diameter and 2 cm length, which two crescent gaps are made in it for oil fluid moving and displacement to up and downside.

Claim 10: According to claims 1 and 6, the cylinder has a valve with a few millimeters thickness and a little smaller diameter relative to the cylinder, and is located 3 mm under the piston, and has this feature that it can moves 5 cm upward and downward in its place and on the shaft. It is also possible to set up a weak spring between the valve and the piston so that the valve can be released faster from the poppet valve and open the oil duct. Claim 11: According to claims 1 and 6, the cylinder has a spring that is connected to spring holder from one side and the other side is at the cylinder floor.

Claim 12: According to claims 1 and 9, if moving speed of piston inside cylinder goes beyond the specified and defined limit, that is applied by upper shaft due to automobile tire impact, the valve closes the out channel of oil fluid and causes locking piston inside the cylinder, and shock holder remains conic and bump

Claim 13: According to claims 1 and 12, adjustment of upward and downward movement of shock holder relative to automobile speed is done through control of vale adjustable clearance

Claim 14: According to claims 1 and 12, 10 and 13, the valve has a little clearance, as if the clearance is zero or too much, the valve doesn't move and the piston speed corresponds to going flow from the piston gap, that is the function of the gap diameter. As these relations are governing for correct performance:

Piston speed entering the system: VP a Q2 a d2

The piston speed corresponds to going flow from the piston gap, which is function of the gap diameter: Pl- P2 a Ql a dl

The washer speed is also function of going volume flow rate from clearance:Vv a Ql

The clearance effect is in below relation:

if d! ~ 0→Qi=0, P P2= max ,VV =0

big gap : if di »1→P =0→VV = 0

Claim 15: According to claim 1 and 6, the hydraulic pump can be made in form of "two cylinders". As just the valve displacement from below of the piston to cylinder floor, without any change in mechanism and general performance of the system. In this type pump, the oil fluid is under pressure and instead of moving upside the cylinder and on the piston, is driven to outside wall of the cylinder from the lower channel of the cylinder (see Fig 4). Claim 16: The hydraulic pump mechanism of the operation of so-called design is also applicable in other places, like industry, press devices, and pressure generators.

AMENDED CLAIMS

received by the International Bureau on 29 March 2018 (29.03.2018)

Claim 1: The "hinged foldable metallic speed bump with hydraulic pump controller" with an absolutely mechanical feature which is able to differentiate between authorized and unauthorized vehicles and speeds down the speed of unauthorized vehicles is described in this invention and has the following components and elements:

The top part which is on the ground (Fig. 2) consists of a conical hinged shock absorber (1 of Fig.2) that binds to the hydraulic pump (2 of Fig.2) and chassis (4 of Fig.2) through the pin (3 of Fig.2) and bearing, and creates a bump; depending on the speed and pressure caused by the impact of the tire, it has locked up at the top and fixed, or bent and level with the road surface.

The lower part that is located underground (Fig.2) and includes: i) the chassis (4 of Fig.2), which is spotted underground, ii) The hydraulic pump (2 of Fig.2) that is inside the chassis and connected to it through a pin (3 of Fig.2). The hydraulic pump has a cylinder (Fig. l) which is filled with oil fluid (6 of Fig. l) and includes shaft (2 of Fig. l), seal (3 of Fig. l), and valve (7 of Fig. l) that is located under the piston (5 of Fig 1), which pushes the valve toward the piston due to the speed of the impact to the shock absorber and pressure applied to the oil fluid, iii) The metal piston, which has two crescent gaps (4 of Fig. l). These gaps on the piston make a motion of the piston due to the force of the oil fluid pressure caused by automobile tire encounter possible. A gasket is placed on the piston (empty place marked on the piston to the shaft which is about 1 cm; figure 1). These parts connect to each other with at least one spring (9 of Fig. l) and on spring holder (8 of Fig.1 ).

Claim 2: According to claim 1, the hinged foldable metallic speed bump includes an impact observer part, which is obvious on the road surface and is made of metal sheet with 30 cm width and 35 to 50 cm length that is able to bend in conic shape box from side of its length with angle of 90°. The plate is galvanized or stainless steel. Its outer surface must be ribbed. Also, the whole piece (bumper) can be made by molding and casting. The bumper depending on the road and location of the installation can be produced in larger dimensions and less (more open) angles, and connected longitudinally to each other to cover the entire width of the road. Claim 3: According to claims 1 and 2, the shock absorber is connected to chassis by pin 1 and bearing with an angle of 45° and it bends downside and sets the level to the road, no matter in which direction pressure is applied.

Claim 4: According to claims 1, 2 and 3, when bending, the shock absorber moves the piston inside cylinder beneath, through the shaft that is connected to, which is filled with oil fluid.

Claim 5: According to claim 1, the invention includes a chassis, which is combined from a pile having two edges on each side, with an angle of 90°. And there are two holes in upper edge for pin number 1 and two holes on lower edge for pin number 2, that parts like hydraulic pump and pins are set on it and is spotted underground and connected to shock holder

Claim 6: According to claim 1, the invention includes a hydraulic pump which includes a cylinder in shape of a metal tube with 3 cm diameter and 10 cm length, a bottom is closed and it's filled with oil fluid.

Claim 7: According to claims 1 and 6, cylinder has a metal rod with 15 cm length which is thread 5 cm on one side and connected the internal cylinder parts, and its feature is connection and relation of piston with conic part and shock absorber of speed bump

Claim 8: According to claims 1 and 6, the cylinder has a seal at entering of it, which prevents oil fluid leaking and external solids entering to the cylinder.

Claim 9: According to the claims 1 and 6, the cylinder has a metal piston with 3 cm diameter and 2 cm length, which two crescent gaps are made in it for oil fluid moving and displacement to up and downside. A gasket is placed on the piston and under the shaft (empty place marked on the piston to the shaft which is about 1 cm; in figure 1). The gasket is lifted easily and freely due to the drag force generated by the fluid flow in the piston inside duct below it, which allows the oil to pass through. However, when the piston returns to the top, the gasket sits with the flow of oil and gravity onto the piston, and this will close half of the oil passage. Claim 10: According to claims 1 and 6, the cylinder has a valve with a few millimeters thickness and a little smaller diameter relative to the cylinder, and is located 3 mm under the piston, and has this feature that it can moves 5 cm upward and downward in its place and on the shaft. It is also possible to set up a weak spring between the valve and the piston so that the valve can be released faster from the poppet valve and open the oil duct.

Claim 11: According to claims 1 and 6, the cylinder has a spring that is connected to spring holder from one side and the other side is at the cylinder floor.

Claim 12: According to claims 1 and 9, if moving speed of piston inside cylinder goes beyond the specified and defined limit, that is applied by upper shaft due to automobile tire impact, the valve closes the out channel of oil fluid and causes locking piston inside the cylinder, and shock holder remains conic and bump

Claim 13: According to claims 1 and 12, adjustment of upward and downward movement of shock holder relative to automobile speed is done through control of vale adjustable clearance

Claim 14: According to claims 1 and 12, 10 and 13, the valve has a little clearance, as if the clearance is zero or too much, the valve doesn't move and the piston speed corresponds to going flow from the piston gap, that is the function of the gap diameter. As these relations are governing for correct performance:

Piston speed entering the system: VP a Q2 a d2

The piston speed corresponds to going flow from the piston gap, which is function of the gap diameter: Pl- P2 a Ql a dl

The washer speed is also function of going volume flow rate from clearance :Vv a Ql

The clearance effect is in below relation:

if d! ~ 0→Qi=0, P P2= max ,VV =0

big gap : if di »1→P =0→VV = 0 Claim 15: According to claim 1 and 6, the hydraulic pump can be made in form of "two cylinders". As just the valve displacement from below of the piston to cylinder floor, without any change in mechanism and general performance of the system. In this type pump, the oil fluid is under pressure and instead of moving upside the cylinder and on the piston, is driven to outside wall of the cylinder from the lower channel of the cylinder (see Fig 4).

Claim 16: The hydraulic pump mechanism of the operation of so-called design is also applicable in other places, like industry, press devices, and pressure generators.

Description:
Description

Invention title: hinged foldable speed bump with hydraulic pump controller Technical field

The present invention is related to foldable speed bumps specially bumps with the ability of an automatic control by a hydraulic pump, which acts without a need to the energy and external equipment and only through the force of the pressure and the impact of the wheel of the passing cars.

Technical problem and the purpose of the invention

In the current century, with the increase in the population and the pervasiveness of the use of motor vehicles, we see traffic in cities, which some drivers with disobeying the permitted speeds in urban passages and pedestrian crossings, in addition to endangering the lives of Passengers also hit with other passing cars. Transport and traffic experts have already begun installing a pump (an instrument for controlling the speed of the vehicle) to reduce the speed of drivers in high-risk areas. The use of bump is made in places where the maximum speed of vehicles does not exceed 5 mph to 10 mph (15 Km/h). According to the existing standards, the height of the highest point of a bump should be 3 to 4 inches (7 to 10 centimeters), its length is 1 ft. (30 centimeters) and its width is the same as the width of the installation location. There are several reports of the first bump, the oldest of which was reported by the New York Times on June 7, 1906. According to the studies, the use of bumps reduces the traffic by 18 percent and reduces the accidents by 13 percent. The most common type of bumps is low-width plastic bumps which are short-lived and every 6 months should be replaced after awhile their screws rise steadily and rupture tires. One of other types of the bumps is hump which is created by pouring asphalt or cement, which in addition to creating a barrier for road and snowmobiles, also changes shape during the heating season. The newest bump model is the intelligent type due to the use of electronic equipment and support systems, and a set of components including speed detection sensor, steering transmission system, hydraulic and pneumatic systems, have a high cost for installation and maintenance and cannot be used on all streets and urban roads. In the present invention (hinged foldable speed bump with hydraulic pump controller),using a combination of small pieces of metal, industrial, simple and accessible materials in small dimensions, the disadvantages of previous speed bumps in this field has overcome.

The primary goal of the present invention is to reduce traffic and the flowing of vehicles traffic on urban streets and roads. The present invention also pursues the following objectives:

1- Decrease accidents and incurred costs.

2. Reduce fuel consumption due to elimination of severe brakes and no need to stop the vehicle completely

3. Decrease in vehicle depreciation and no damage to vehicle suspension

4. Increasing the safety of pedestrians

5. Relaxation of disciplined drivers due to elimination of the speed bump at defined speeds

State of previous art

In the past, some efforts and methods have been done in this area. But they have a completely different function with what current invention has. Two examples of these efforts are patents US20130193692 registered at the Invention Office of America and EP 2 940 215 Bl registered in Europe, but the prior knowledge is mainly in the following ways. Most of them use a spiral spring or a spring strap that are very heavy and may lose their elasticity. Also, the tongue and gears for the locking system are used, which, in addition to creating a dry impact, rarely gears can resist loads inserted by trucks, and because of the use of the gearbox, the bomb has a lot of depreciation.

In another example are smart bumps, due to their dependence on electricity and external energy consumption, and the reliance on electronic equipment and the use of a set of speed sensors, a steering system, pneumatic and hydraulic systems for steering and setting in a proper position, installation and maintenance costs a lot and cannot be used extensively. Also, since in both of the above models the entire structure is changed as a unit, it is unclear when the two vehicles at different speeds reach these type of speed bumps, depending on which one they change the state. There is no such weakness in the proposed invention, and only those parts that are under the wheel of the vehicle will be deformed.

The claimed system (hinged foldable metallic), unlike previous attempts, in addition to simplicity, does not have any of the disadvantages of the previous speed bumps.

The presented solution and features of the invention

"Hinged foldable speed bump with hydraulic pump controller" has many advantages over previous knowledge. Firstly, it's designed in small dimensions, it is very simple to install on urban roads. Secondly, it has very low depreciation and has high strength. Thirdly, this system can differentiate between authorized and unauthorized speeds without external energy consumption and dependence on electronic support systems and can react differently to each car's performance. In addition, the following points refer to the more features:

1. It has a small, all-metal structure, fracture and impact resistance with very low debris, long life, without a need to maintain, with a fully mechanical performance and no external energy consumption.

2. The common bumps mounted on the road surface over time causes the cracks and breakdowns of the asphalt and subsoil of its underlayment and damage to the path, but the base of this bump is placed on the ground and transmits the pressure to the depth of the ground.

3. Unlike other bumps, whose screws rise over time and cause rupture of the tires, there is no screw on this type of bump.

4. No disturbance and obstruction for road vehicles and snowmobiles

5. With operating that is proportional to the speed of passing cars, those cars that travel with permitted speeds are passed without any obstacle which in addition to not damage the car the passengers tranquil will not disturb. 6. This bump is adjustable according to the road and installation location for different speeds.

7. If two or more cars simultaneously reach the bump at different speeds, the entire structure will not be changed uniformly and will work for each car individually.

8. Operating in adverse weather conditions, lack of dependence on the equipment and electronic systems, and electricity.

Brief description of the invention

The presented speed bump has three major parts:

1- The shock absorber and the only device of this bump that is visible on the surface of the road are placed in a cone with an angle of 45 degrees or less on the road, connected to the chassis by pin and bearing. In such a way that in the face of the wheel operate like a hinge includes two modes:

A) Lock mode: in this case, the bumper is at the highest level and cause a bump.

B) Flattening mode or leveling surface: in this case, the bump is tilted down the hinge and level with the road surface (number 1 in Fig. 2).

2- Hydraulic pump control is the unique part of this design, which acts as a shock absorber with the difference that, regardless of the amount of force applied, if this pressure is applied at a specified time, for example, 0.5 seconds, this pump is shown to be flexible and collapsible, but if this pressure is sudden and hit, this pump is locked in itself and It does not show resilience (number 2 in Fig. 2).

3- The chassis consists of a column with a width of 10cm and a length of 20cm with two edges on the sides with a width of 5cm and 90 ° bend, with two holes in the two upper edges for pin number 1 and two holes in the two lower edges for pin number 2. The two above-mentioned parts are attached to this part by pin and planted in the ground, and the other work is to transfer the pressure and weights (by the vehicle) to the depth, not the road surface.

Description of the figures and depiction of the embodiments of the invention Figure 1 : shows the hydraulic pump components and assembly.

Figure 2: shows the chassis and bumpers section.

Figure 3: Complete assembly and installation on the road.

Figure 4: Second Model of Hydraulic Pump Controller

Figure 5: A schematic of operation of the hydraulic pump controller

Explaining and Describing Figure 1 :

A) The cylinder: A metal pipe with an internal diameter of 3cm and a length of 10cm, with a body of 3mm thickness and its floor is closed and inside of it become the piston size be polished and filled with fluid (oil) (Fig. 1).

B) The shaft: A metal rod of 15 cm in length, 5 cm in length, threaded, connecting the inner parts of the cylinder. It is connecting the piston with the conical piece and the bump shock absorber (Fig. 2).

C) The bowl: For closing the cylinder door which prevents the oil from pouring out and the foreign objects entering the cylinder (Fig. 3).

D) The metal piston with a diameter of 3 cm and a length of 2 cm, with a crescent slit inside it for fluid transfer downward and upward (Fig. 5).

E) The valve: (washers) which has a few millimeters thick, with a diameter slightly smaller than the inside diameter of the cylinder, located at a distance of 3 mm from the bottom of the piston, and in its place and on the shaft can move up to 5 mm up and down (Fig. 7).

F) The spring chuck: A spring head is connected to it and another head of spring is on the cylinder bottom (Fig. 8).

G) The spring: It has the task to return the whole component to the top after the force and pressure are removed from the bump (Fig. 9).

Description of Hydraulic Pump Part (Fig. 1):

Any pressure and force applied to the shaft in the vertical direction, regardless of its amplitude and weight, causes the piston to move downwards. If this force is applied slowly and within a defined time period (e.g. 0.5 seconds), the piston and all components show flexibility and move downwards. During this time, the fluid (oil) under the piston is pressurized and passed through the slot and the channel inside of the piston onto it and above the cylinder, and the hydraulic pump controller is folded in itself, and when the load and pressure are removed from the shaft, the spring pushes back the components up and into the unload figuration. But if the pressure and force is in short time and in a state of impact, which depends on the speed of the vehicle's wheel, the oil below the piston will be compressed and pressurized before it can be moved from the gasket (valve) and from the piston gap to it, increase the pressure inside the cylinder and push the gasket up to the piston floor. As a result, the oil outlet duct is blocked and the fluid does not have a way to move and exit, and the piston is locked in that position. In fact, there are two main ducts for passing oil from the bottom to the top of the cylinder (see Fig 5):

Duct 1 : shimmy between valve washer and cylinder

Duct 2: Channel inserted inside the piston

The flow of these two ducts determines the system's performance: lf the flow from duct 1« flow of the duct 2 = the shaft moves slowly downward. Jf the flow from duct 1< flow of the duct 2 = the shaft stops. the flow from duct 1 oc gasket speed

It should be noted that:

he flow from duct 2 oc piston speed

It is obvious that if the piston speed is greater than the gasket, the piston will reach the gasket and in this case, the inlet of the piston gap will be blocked by the gasket, and the passage will not flow through and the axes stop.

B. Explain the system performance due to the pressure applied:

When the axes move downwards due to the applied force (impact of the vehicle's wheel), the force pushes the fluid which is under the piston. If the piston had no gaps, the piston would not move and the force would become the oil pressure below the piston. But because of the gap, the oil moves through the gap due to the pressure difference between the top and bottom of the piston.

Now assume that the gasket of the piston is completely sealed (the flow from duct 1=0) and no flow cannot pass between the gasket and the cylinder. In this situation, 0 the distance between the gasket and the piston is fixed and the piston and gasket move equally. If the gap between the gasket and the cylinder is very much there will be no pressure difference between the sides of the gasket and it does not move and eventually, the piston does not reach the gasket. Comparison between these two states shows the role of the leak well.

1 · Simple parameter analysis:

V p : Piston velocity, input of the system V p oc Q 2 oc d 2

The piston velocity is proportional to the flow from the piston slot which is dependent on slot diameter:

1 0 The gasket velocity is function of flow through the gap:

The gap effect is well seen from the following analysis. fif di ~ 0→Q 1 =0, P 1 - P 2 = max ,V v =0

(big gap : if di »1→P P 2 =0→Qi =0→V V = 0

That is, if the gap is zero or too high, the valve does not move, and the speed of the valve is heavily dependent on its gap.

^ · It should be noted that the bulk of the load and pressure applied to the bump that is produced by the vehicle is transmitted to the hinged section to the chassis. Hence, these components are made from high-strength materials and the hydraulic pump controller has the role of a toggle and only allows the operation of the hinged part. Explain and illustrate Fig. 2:

A) Chassis: Here, a 20 cm long channel number 10 is used, which other pieces mounted on it and planted in the ground (Fig. 4).

B) The upper part and the shock absorber, and only the piece that appears on the surface of the road and causes a bump (Fig. 1).

C) Hydraulic pump No. 2

D) Pins:

Pin number 1 : Shaft with a diameter of 25 mm and a length of 10 cm (Fig. 3). Pin number 2: Shaft with a diameter of 20 mm and a length of 10 cm (Fig. 3).

Describing the top part and shock absorber (Fig. number 2):

The top part and the only piece that is located on the surface of the road and in contact with the vehicle's wheel is a shock absorber. The shock absorber is made of a 5 mm thick sheet with 30 cm width and 35 length that is able to bend in conic shape box from side of its length with angle of 90° in somehow that placed in conical shape with a 45 ° angle at the road surface. Several supports have been welded in order to reinforce this part. Also, the whole piece can be made by molding and casting. The plate is galvanized or stainless steel. Its outer surface must be ribbed in order to ensure that there is enough friction between the tires and prevent the wheels from slipping on bump. The two metal bushes are embedded on both sides and from inside, one for connecting the hydraulic pump shaft and another for connecting to the chassis by pin number 1 in such a way that, by pushing it on each side hinged down and become level to the road surface. This piece can be made in larger dimensions and less angles (open) proportional to the road and location of the installation, but ultimately have to put them along the length to cover the entire width of the road. In order to create an appropriate visibility for drivers, its exterior should have a traffic warning color such as yellow to distinguish it from the dark surface of the road. For more safety, the cat's eye light can be fitted in the body to provide adequate visibility for drivers at night. Explain and description of Fig. 3: After complete assembly, the final figure of this bump is in the form of the letter T and connected together longitudinally to cover the width of the road. There is a height of 35cm from the bottom of the chassis to the highest point.

Explain and description of Fig. 4:

In this design, known as a dual-cylinder pump, the valve is moved from below the piston to the bottom of the cylinder without altering the mechanism and operation of the system. In this model, the oil is pressurized, instead of being pushed to the top of the cylinder and onto the piston; it is driven through the cylinder bottom canal to the outer wall of the cylinder.

Description of the components of Fig. 4 (second model of hydraulic pump controller): This model consists of the following components:

1- Shaft

2- cylinder

3- Piston

4- Oil compartment

5- Valve

6- Spring

How to connect components and device parts

Executive method of the invention

In order to use the mentioned bump, the components must be fully assembled and then installed at the specified location. Assembly of components is as follow:

A) Design and assembly of pump:

After connecting the valve, piston and spring with a threaded shaft, the shaft assembly (inside of it become the piston size and be polished previously by the lathing unit) is placed in the cylinder and filled with fluid. Finally, the oil seal is placed in the inlet of the cylinder at its place.

B) Chassis design and assembly:

The chassis consists of a column with a width of 10cm and a length of 20cm with two edges on the sides with a width of 5cm and 90 ° bend, with two holes in the two upper edges for pin number 1 and two holes in the two lower edges for pin number 2, which is made inside of it by lathing unit.

C) Design and assembly of the bump's cone section:

Preferably ribbed sheet metal with a thickness of 5mm and a length of 35cm (extendable up to 50cm in length) with width of 25cm,bend from side of its length with angle of 90°and several supports have been welded from inside for reinforcement. On one side, a metal bushing is welded that pin number 1 is passed through this bushing and connects the shock absorber to the chassis. On the other side, for connecting the hydraulic pump to the bumper, another bushing is welded.

D) Complete assembly:

The bumper's section is connected to the two upper holes of the chassis by pin number 1, which bends downwards and upwards in a hinged manner. The upper shaft of the hydraulic pump is also connected to another bushing that has been welded on the other side of the shock absorber. The bottom of the pump is also connected to the two bottom holes of the chassis by pin number 2.

E) Installing the structure: After locating the installation location by urban traffic experts, they dig the ground. The depth and width of the drill, each about 30cm and drilling length, will be as wide as the street. After drilling operations, the entire previously assembled structure is installed into the ground and concrete around the chassis to fix the structure.