TECHNICAL FIELD

The invention relates to a balancing device for balancing the tension on transmission elements of elevator assemblies, such as belts or ropes and an elevator assemblies having said balancing device.

PRIOR ART

Elevator structures are often used in multi-storey buildings that move in a vertical elevator shaft. The cars of said elevator structures move between guide rails arranged in the shaft and said cars are pulled by traction motors via belts or ropes.

It is extremely important for the system to work properly that the tensions of the transmission elements such as belts or ropes are equal. When the transmission elements are not in equal tension, wear and tear are observed on the shaft or pulleys of the traction motors that are in contact with the transmission elements, and a similar situation is also can be seen for the rollers.

Transmission elements are usually connected to the elevator assembly by springs. In the first installation, the process is completed after the tension is adjusted by taking measurements on the transmission elements by manual control over the springs or by various tension meters. After such balancing, if the tension changes during the operation of the elevator assembly, it is extremely difficult correcting tension and the entire elevator assembly must be stopped for correction operation.

CN103303767A discloses a tension balancing device for elevator systems. Balancing device is connected on the cabin of the elevator. Here, a transmission element is connected to both ends of a balancing arm that rotates freely on the axis of the connection point provided at approximately the middle point of the elevator. In this structure, when the tension of the transmission element connected to one end of the arm increases, said end of the arm is pulled and the other end of the arm moves in the opposite direction for equalizing the tensions by increasing the tension of the other transmission element. Here, the maximum balancing of tensions with respect to each other is limited by the length of the balancing arm. In modern elevator systems, the maximum amount of balancing provided for balancing is insufficient because the distance between the transmission elements is very limited.

As a result, all above-mentioned problems necessitate an innovation in the respective field.

OBJECT OF THE INVENTION

The present invention aims at overcoming the above-mentioned problems and achieving an innovation in the respective technical field.

The main aim of the invention is to present a balancing device that provides continuous balancing of the tension on transmission elements such as belts or ropes in elevator assemblies.

The main aim of the invention is to present a balancing device which is balancing amount is independent from a distance between the transmission elements.

Another object of the invention is to present a balancing device that provides load measurement in elevator cabins.

Another aim of the invention is to present a balancing device that provides vibration damping effect.

BRIEF DESCRIPTION OF THE INVENTION

In order to fulfill all of the objects to be appreciated from above-mentioned and the following description in detail, the present invention is a balancing device for balancing the tension on transmission elements such as belts or ropes in elevator assemblies. Accordingly the balancing device comprises at least two fluid piston configured to connect transmission elements and having, a piston chamber for storing fluid, a piston head arranged to divide said piston chamber into two regions and movable within the piston chamber and a piston shaft connected to the piston head; a connection pipe that connects the transmission elements to each other in such a way that ensure the tensions of the transmission elements are balanced by allowing the fluid in the piston chamber to flow into the other piston chamber as a result of the movement of the piston shaft and the head when one of the transmission elements is tensioned and enables movement of other piston shaft in the opposite direction

A preferred embodiment of the invention comprises more than two fluid piston and the connection pipe connects all piston chambers to each other.

A preferred embodiment of the invention comprises a pressure meter to measure the pressure in the piston chamber.

A preferred embodiment of the invention comprises a fluid reservoir to which the connection pipe is connected and where a fluid will be stored.

In an alternative embodiment of the invention, the fluid piston is a pneumatic piston and said fluid is in gas form.

In a preferred embodiment of the invention, the fluid piston is a hydraulic piston and said fluid is in liquid form.

In a preferred embodiment of the invention, the liquid is hydraulic oil.

A preferred embodiment of the invention comprises a connection table to which the fluid pistons are connected.

In an alternative embodiment of the invention, the piston shaft is arranged to be directly connected to the transmission elements.

A preferred embodiment of the invention comprises a transmission connection that can be connected to the end of the piston shaft and the transmission element in order to connect the said piston shaft to the transmission elements.

In a preferred embodiment of the invention, said transmission connection comprises a horizontal surface with a horizontal shaft aperture through which the piston shaft can pass, and a fixing element that ensures the fixation of said piston shaft after passing through the horizontal shaft opening.

A preferred embodiment of the invention comprises a compression surface arranged in the form of an inclined plate to ensure the compression of the end part of transmission element and a compression wedge arranged to remain between said compression surface and a horizontal plate. In order to fulfill all of the objects to be appreciated from above-mentioned and the following description in detail, the present invention is an elevator assembly. Accordingly the elevator assembly comprises a traction engine; an elevator cabin; at least two transmission elements driven by said traction motor to move the elevator car, and a balancing device according to any of the claim 1 to 13 or embodiments disclosed in detailed description, where the ends of the transmission elements are connected in order to balance the tensions of the transmission elements.

In a preferred embodiment of the invention, the balancing device is connected to the cabin.

In a preferred embodiment of the invention, the balancing device is connected to a guide rail.

In a preferred embodiment of the invention, the balancing device is connected to a fixed surface.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a representative schematic view of the embodiment of the balancing device.

Figure 1 .A is a representative schematic view of another embodiment of the balancing device.

Figure 1 .B is a representative schematic view of embodiment of the balancing device for multiple transmission elements.

Figure 2 is an isometric view of an embodiment of the balancing device.

Figure 2. A is a detailed view of Figure 2.

Figure 2.B is a front view of the Figure 2.

Figure 2.C is a cross section view of the Figure 2.B.

Fig 3-3. C are representative schematic views of the various positioning of the balancing device in elevator assemblies.

The drawings do not necessarily need to be scaled, and details that are not necessary to understand the present invention may be omitted. Furthermore, elements that are at least substantially identical or at least have substantially identical functions are indicated with the same number.

REFERENCE NUMBERS OF THE DRAWNINGS

1. Balancing device

2. Transmission elements

3. Roller

10. Fluid piston

11. Piston chamber

111. Piston inlet

112. Primary region

113. Secondary region

12. Piston head

13. Piston shaft

20. Connection pipe

30. Connection table

31. Connection surface

32. Shaft aperture

40. Transmission connection

41. Fixing element

42. Fixing plate

421. Horizontal surface

4211. Horizontal shaft aperture

422. Vertical surface

43. Press wall

44. Compression surface

441. Compression wedge

45. Connection plate

50. Fluid reservoir 51. Body

511. Reservoir inlet

52. Pressure meter

A. Fluid

AK. Elevator shaft

M. Engine

K. Cabin

KR. Guide rail

KA. Counterweight

S. Fixed surface

T. Engine room

DETAILED DESCRIPTION OF THE INVENTION

In this detailed description, a balancing device for elevator transmission elements have been disclosed with non-limiting examples in order to further describe the subject matter of the invention.

The invention relates to a balancing device (1 ) for balancing the tension on transmission elements (2) such as belts or ropes in elevator assemblies and comprises at least two fluid piston (10) configured to connect transmission elements (2) and having, a piston chamber (11 ) for storing fluid, a piston head (12) arranged to divide said piston chamber (1 1 ) into two regions and movable within the piston chamber (1 1 ) and a piston shaft (13) connected to the piston head (12); a connection pipe (20) that connects the transmission elements (2) to each other in such a way that ensure the tensions of the transmission elements (2) are balanced by allowing the fluid (A) in the piston chamber (1 1 ) to flow into the other piston chamber (11 ) as a result of the movement of the piston shaft and the head (13, 12) when one of the transmission elements (2) is tensioned and enables movement of other piston shaft (13) in the opposite direction.

Referring to Fig. 1 ; the balancing device (1 ) is arranged to regulate/balance the tension of at least two transmission elements (2). Here, the transmission element (2) is belt or rope-like elements driven by an elevator traction engine (M) to provide the movement of the elevator cabin (K) in elevator systems.

Each of the said transmission elements (2) is connected to a fluid piston (10). The fluid piston (10) is a structure that has a piston chamber (1 1 ) and moves the piston rod (13) it has in the direction of the amount of fluid (A) in the said chamber.

The fluid piston (10) mentioned is preferably a hydraulic piston (10), and accordingly a liquid fluid (A) is preferably hydraulic oil. Alternatively, said fluid piston (10) may also be configured as a pneumatic type piston, where fluid (A) is provided in gas form.

In this detailed description, the disclosure will be provided over a hydraulic type fluid piston (10).

The balancing device (1 ) may comprise a connection to which the mentioned fluid pistons (10) are connected in order to provide easy assembly.

There is a piston head (12) inside the piston chamber (1 1 ) of the fluid piston (10), and said piston head (12) can move in the axial direction.

Preferably, the piston head (12) is circular and the piston chamber (10) is cylindrical.

Both fluid pistons (10) comprise a piston shaft (13) extended in axial direction and is connected to the piston head (12) in such a way that it can move together with the piston head (12) and it extends in the axial direction. Here, the piston shaft (13) is arranged to extend from the inner volume of the piston chamber (1 1 ) to outside.

The piston head (12) divides the piston chamber (1 1 ) into two as primary and secondary regions (1 12, 1 13). The piston head (12) has elements that provide sealings to prevent the passage of fluid (A) between the primary and secondary regions (1 12, 1 13). Similarly, there are sealing elements in the part where the piston rod (13) comes out of the piston chamber (1 1 ).

Preferably, the fluid (A) is provided in the secondary region (1 13).

In both fluid pistons (10), there is a piston inlet (11 1 ) in the region where the fluid (A) is provided. Said piston inlets (1 11 ) are arranged in such a way that the fluid (A) exits the piston chamber (1 1 ). Said piston inlets (11 1 ) are connected to each other by a connection pipe (20). Here, the fluid (A) can flow from one piston chamber (10) to the other via the connecting pipe (20).

By providing the piston inlet (11 1 ) as close as possible to the bottom or bottom of the piston chamber (1 1 ), the fluid (A) flows more easily from one piston chamber (1 1 ) to the other, especially if fluid (A) is liquid.

In addition, a situation that should be especially noted is that during the arrangement of the connecting pipe (20), using vertically extending portions should be avoided. A vertically extending portions does not completely prevent the working of invention however it does complicate the flow of fluid (A).

Piston shafts (13) can be arranged in such a way that they can be directly connected to the transmission elements (2), or they can have a transmission connection (40) as in Figure 1 . Fundamentally, the transmission connection (40) is an intermediate element that can be connected to both the piston shaft (13) and the transmission element (2).

In the balancing mechanism (1 ) when the tension of one of the transmission elements (2) increases, it pulls the piston shaft (13) towards itself. Said pulling force pulls the piston shaft (13) and thus the piston head (12). With the said movement of the piston head (12), the volume of the piston chamber (1 1 ) region, where the fluid (A) is located, decreases.

As the volume decreases, the pressure in the said region will tend to increase. However, in the balancing device (1 ), these chambers tend to equalize the pressures, since the parts of the piston chamber (1 1 ) that keep the fluid (A) are connected to each other by a connection pipe (20). Here, this equalization process is provided by the flow of the fluid (A) in the narrowed piston chamber (11 ) region to the other piston chamber (1 1 ) region by the pressure via the connection pipe (20). The piston head (12) in the piston chamber (11 ), where the fluid (A) enters, moves the piston shaft (13) and thus the transmission element (2) by moving in the opposite direction so it is equalized the tensions of the transmission element (2).

Referring to Fig. 1 .A; the balancing device (1 ) may also comprises a fluid reservoir (50). The fluid reservoir (50) comprises a body (51 ) and the reservoir inlet (51 1 ) provided on the body (51 ). The reservoir inlet (51 1 ) mentioned here is connected to the connection pipe (20) in such a way that the fluid (A) flows into the piston chambers (1 1 ). In this embodiment, the connecting pipe (20) has at least one end for each piston chamber (11 ) and at least one end for the fluid chamber (50).

Here, the fluid reservoir (51 1 ) provides balancing by the extra volume and fluid (A).

In addition, in the embodiments where the fluid (A) is supplied in the liquid phase, the empty part in the fluid reservoir (50), where the volume without the fluid (A), provides a damping effect that will dampen the vibrations arising from the pulling of the transmission elements (2) or the general elevator structure.

Furthermore, the fluid chamber 50 may comprises a pressure meter (52). Based on the pressure measured, it can be derived to determine the total weight of the cabin (K) where the transmission elements (2) are carried, together with the passengers. In the prior art, this measurement was determined by the load cells positioned under the cabinet (K), but there was a great mounting difficulty due to the position of the load cells.

Similarly, the pressure meter (52) may also be provided to measure the pressure in the piston chamber (1 1 ).

In addition, the pressure meter (52) may also be provided on the connection pipe (20).

The pressure gauge (52) may also be provided on any element on which the fluid (A) is present on the balancing device (1 ).

Preferably, the balancing device (1 ) includes a processing unit that allows the measured pressure of the device or elevator system to be derived into weight.

Referring to Fig. 1 .B; the balancing device (1 ) may comprises more than two fluid pistons (10). In Figure 1 .B, four fluid pistons (10) and four transmission elements (2) connected to them are shown. If necessary, this number can be increased to 3, 4, 5, 6 or more. Here, the connecting tube (20) has at least one end for each piston chamber (11 ) and, if any, at least one end for the fluid chamber (50).

Referring to Figures 2 and 2. A; said fluid pistons (10) are positioned on a connection table (30) as two on the right and two on the left. The connecting table (30) is placed on the guide rail (KR) of the elevator system and configured accordingly. In addition, there may be differences in the structure of the connection table (30) within the need to connect the balancing mechanism (1 ) to different points. The connection table (30) preferably includes a horizontally extending connection surface (31 ) and there is a shaft aperture (32) on the said surface. The shaft aperture (32) is arranged to allow passage of the piston shaft (13).

Referring to Fig 2.B and 2.C; It has been previously stated that the balancing device (1 ) may include a transmission connection (40) connected to the piston shaft (13).

The transfer connection (40) comprises a fixing plate (42). Said fixing plate (42) comprises a horizontal surface (421 ) and there is a horizontal shaft aperture (421 1 ) on said horizontal surface (421 ). The piston shaft (13) passes through the said horizontal shaft opening (421 1 ) and is connected to the a fixing element (41 ) under the horizontal surface (421 ) which is connected by wrapping the diameter of said piston shaft (13) and the transfer connection (40).

The cross section of the transfer connection (40) preferably includes a vertical surface (422). Said vertical surface (422) can be provided separately from the horizontal surface (421 ) or integrated.

A pair of press walls (43) are arranged oppositely on the vertical surface (422). Between said press walls (43), there is a compression wedge (441 ) and an inclined compression surface (44) with a distance between the compression wedge (441 ) and the transmission element (2). The transmission element (2) enters from the lower part of the compression wedge (441 ) and after being bent at the upper part and returns from the gap between the compression surface (44) and the compression wedge (441 ). The returning transmission element (2) is fixed to the vertical surface (422) by means of a connecting plate (45).

Said balancing device (1 ) is connected to one of the cabin (K), the cabin (K) suspension, a fixed surface in the elevator shaft (AK), counterweight (KA), counterweight (KA) suspension, engine room (T) and engine (M) in the elevator system and is positioned to connect the transmission elements (2). The balancing device (1 ) may be provided in at least one of the mentioned positions or may be provided in more than one.

In Figure 3-3. C, couple of the elevator assemblies with the balancing device (1 ) are shown. It should be understood that besides embodiments in which the balancing device (1 ) is located on the car (K), the balancing device (1 ) also may be positioned on the cabin (K) or on the cabin (K) suspension. Here the balancing device (1 ) is positioned so that it is connected to the transmission element (2) from the counterweight (KA) to one of the points, such as walls in the elevator shaft (AK) or suitable fixed plates.

In Figure 3, the transmission element (2) extends from a fixed surface (S) to the roller (3) to which the counterweight (KA) is connected, and reaches the traction engine (M) by changing direction there. The transmission element (2) passing through the traction engine (M) is connected to another fixed surface (S) on the other side of the elevator shaft (AK) by passing through the rollers (3) provided at the base of the elevator cabin (K) and changing direction again. Here, the balancing device (1 ) is connected to points such as walls or suitable fixed plates in the elevator shaft (AK). It is also possible to place it on the floor of the engine room (T).

In Figure 3.A, the elevator traction motor (M) is located in the ceiling room, also known as the engine room (T). The path followed by the transmission element (2) and the counterweight (KA) and elevator cabin (K) working method is the same as the assembly given in Figure 3. Similarly, the elevator traction engine (M) can also be positioned at the bottom of the shaft. Here, the balancing device (1 ) is connected to points such as walls or suitable fixed plates in the elevator shaft (AK). Here, the balancing device (1 ) is positioned so that it is connected to the transmission element (2) coming from the counterweight (KA) to one of the points, such as walls in the elevator shaft (AK) or suitable fixed plates.

In Figure 3.B, the transmission element (2) extends from a fixed surface (S) to the roller (3) to which the counterweight (KA) is connected, and reaches the traction engine (M) by changing direction there. The transmission element (2), which changes direction 90° with a roller (3) before the traction engine (M), changes direction 90° again with another roller (3) after the traction motor (M) and passes through the rollers (3) provided at the base of the elevator cabin (K) and changes direction again and connects to another fixed surface (S) on the other side of the elevator shaft (AK).

In Figure 3.C, the transmission element (2) is directly connected to the counterweight (KA). The transmission element (2) extends from the counterweight (KA) to a roller (3) and changes direction by 90°, enters the traction motor (M) and changes direction again by 90° and is directly connected to the elevator cabin (K). Here, the balancing devide (1 ) is provided to be connected to the cabin (K), especially to the ceiling of the cabin (K) or to the cabin (K) suspension. In addition, the balancing device (1 ) can be provided on the counterweight (KA). The protection scope of the invention has been mentioned in the claims that are attached and the invention cannot be limited to the embodiments described in this detailed description. It is clear that a person skilled in the art can provide similar embodiments within the scope of the above mentioned descriptions without deviating from the main theme of the invention.