Lifting platform

Abstract

The invention relates to a lifting platform which comprises a machine base, a first moving module arranged on the machine base, a second moving module, and a carrying assembly; the first moving module comprises a first driving source and a first lifting frame which is vertically arranged; the first lifting frame is connected with the machine base, and the first driving source drives the first lifting frame to reciprocate up and down in the vertical direction; the second moving module comprises a second driving source and a second lifting frame which is horizontally arranged; one end of the second lifting frame is arranged on the first lifting frame in a sliding mode, and the second driving source drives the second lifting frame to move up and down on the first lifting frame in a reciprocating mode; the carrying assembly is used for placing a to-be-mounted center pin; a rotating shaft is installed at the other end of the second lifting frame, and the carrying assembly is rotationally arranged on the rotating shaft. The center pin can be effectively lifted to a vehicle bottom mounting position, the multi-degree-of-freedom adjusting requirement can be met, it is guaranteed that the required positioning precision can be achieved during center pin mounting, operation is easy, and mounting stability is high.

Description

technical field [0001] The invention relates to the technical field of subway vehicle parts installation, in particular to a lifting platform. Background technique [0002] In the general assembly production process of subway vehicles, the upper body of the vehicle is generally produced first, and the connection between the upper and lower bodies of the vehicle is completed after the upper body is produced and assembled. The center pin of the subway is an important part installed on the underframe of the upper body of the vehicle and installed before the upper and lower bodies are connected. The center pin of subway vehicles is generally a casting, which is heavy and irregular in shape. It is labor-intensive to install through manual handling, easy to fall off, and poses a safety hazard. A special tooling needs to be designed for the installation of the center pin of subway vehicles. [0003] In the patent with the Chinese patent publication number CN110435687A, an auxiliar...

AI Technical Summary

Problems solved by technology

However, in the process of realizing the inventive technical solution in the embodiment of the application, the inventor of the present application found that the above-mentioned technology still has the following technical problems: a kind of auxiliary positioning device and method for the traction center pin of the EMU disclosed in the CN110435687A patent, it needs to rely on the lower part The position of the guide rail is adjusted on the track. The freedom of center pin installation is not high, and it is difficult to meet the accuracy requirements of center pin installation and alignment. The lifting device only considers the adjustment requirements of one degree of freedom, which cannot meet the center pin installation and alignment requirements. Adjustment requirements in the XY plane, center pin installation accuracy is not high, can not meet the center pin installation of various models

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