Title:
CONCRETE MIXING TRUCK WITH HOLLOW SHAFT ROTARY SEALING
Document Type and Number:
WIPO Patent Application WO/2019/042480
Kind Code:
A1
Abstract:
Disclosed is a concrete mixing truck with hollow shaft rotary sealing. The truck comprises a mixing drum (1) mounted on a truck body and capable of rotating relative to the truck body, with a feeding drum (2) being provided at the centre of an outlet of the mixing drum (1), and further comprises a moving part mounted on the truck body and capable of moving relative to the truck body. A seal cover (3) is mounted on the moving part by means of rotary support. An outer edge of the seal cover (3) comes into contact with an outer edge of the outlet of the mixing drum (1), and a first sealing device is arranged in the contact position. The seal cover (3) is driven by the mixing drum (1) to rotate along with the mixing drum (1) relative to the moving part. In the concrete mixing truck, the seal cover (3) for sealing the mixing drum (1) is arranged as a rotary structure and is able to synchronously rotate along with the mixing drum (1) so as to arrange a dynamic sealing part between the feeding drum (2) and a feed hopper (9), thus greatly reducing the rotating radius at the dynamic seal, reducing the relative linear velocity at the seal, reducing the wear of a sealing part while ensuring the sealing effect, improving the reliability of the mixing truck and reducing the difficulty of maintenance.
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Inventors:
SHENG FUCHUN (CN)
Application Number:
PCT/CN2018/104635
Publication Date:
March 07, 2019
Filing Date:
September 07, 2018
Export Citation:
Assignee:
YANTAI SHENGLIDA ENGINEERING TECH CO LTD (CN)
International Classes:
B28C5/42
Foreign References:
CN107344401A | 2017-11-14 | |||
CN102310483A | 2012-01-11 | |||
CN103600418A | 2014-02-26 | |||
CN205438894U | 2016-08-10 | |||
CN201261222Y | 2009-06-24 | |||
JP2007030187A | 2007-02-08 |
Attorney, Agent or Firm:
YANTAI SHUANGLIAN PATENT FIRM ( ORDINARY PARTNERSHIP) (CN)
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