A wrench for narrow space and its application

Abstract

The invention discloses a wrench used in a narrow space, which solves the problem that bolts in a narrow space are not easy to be locked or disassembled in the prior art, has reliable overall connection, solves the problem of disassembling bolts or nuts in a narrow space, and can effectively improve disassembly. Assembling speed, the specific plan is as follows: a wrench used in a narrow space, including a wrench host and a disassembly tool that can engage with bolts or nuts, the wrench host is bent and set, the wrench host is a pneumatic wrench host or an electric wrench host, and the wrench host The inner side is connected to the disassembly tool through the transmission shaft, and the outer side is connected to the disassembly tool through the connecting piece. The tightening collar is arranged on the peripheral side of the connecting piece and covers the connection position between the connecting piece and the disassembling tool.

Description

technical field [0001] The invention relates to the field of motor vehicles, in particular to a wrench used in a narrow space and its application. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] In the production process of bullet trains or other trains, the equipment compartment is regarded as a whole module. After the equipment compartment is manufactured, it is installed on the side beam of the train. When the equipment compartment module is installed, the equipment under the train has been installed, and the side beam has been There are bolts, and the distance between the existing bolts and the pre-tightening bolts of the equipment compartment is usually less than 13mm, resulting in a narrow space for locking the bolts of the equipment compartment, so that the existing bolts of the equipment compartment cannot be used for pre-tightenin...

AI Technical Summary

Problems solved by technology

[0003] In the production process of bullet trains or other trains, the equipment compartment is regarded as a whole module. After the equipment compartment is manufactured, it is installed on the side beam of the train. When the equipment compartment module is installed, the equipment under the train has been installed, and the side beam has been There are bolts, and the distance between the existing bolts and the pre-tightening bolts of the equipment compartment is usually less than 13mm, resulting in a narrow space for locking the bolts of the equipment compartment, so that the existing bolts of the equipment compartment cannot be used for pre-tightening. Pneumatic tools, in most cases consider using a ratchet wrench to lock the bolts

[0004] The inventor found that, in most cases, manpower installs the bolts through a ratchet wrench. Due to the narrow working space, the ratchet wrench has the problem of poor flexibility, and the pre-tightening time of each bolt is about 1.5-2min. Because each equipment compartment There are a large number of bolts that need to be tightened, the number is about 100 per vehicle, and there are problems such as high labor intensity for the constructor, low construction efficiency, and long working time.

[0005] Correspondingly, when the bolts and nuts are disassembled, due to the narrow space, there are also problems of low working efficiency and long working time

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