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Adjustable three-jaw wrench

An adjustable, claw technology, applied in the directions of wrenches, manufacturing tools, wrenches, etc., can solve the problems of the narrow space of the diesel engine cylinder cover, the difficulty in tightening the inner hexagonal nut, and the different sizes of the hexagonal nut, so as to ensure the tightening torque, The effect of reducing weight and increasing speed

Inactive Publication Date: 2018-03-09
CRRC LUOYANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the hexagonal nuts used by the locomotive depots of various railway bureaus and local railway companies are of different sizes, and the space between the cylinder covers of diesel engines is narrow, it brings many difficulties to the tightening of the inner hexagonal nuts, the work efficiency is low, and the tightening effect is poor.

Method used

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  • Adjustable three-jaw wrench

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Embodiment Construction

[0014] Such as figure 1 , 2 , 3, shown in 4, spanner of the present invention comprises a pipe 1, adopts tubular structure to improve integral strength, lighten weight; The inner diameter of pipe 1 is greater than the outer diameter of cylinder head bolt of diesel engine cylinder, can avoid the interference of cylinder bolt end, The length of the pipe 1 is greater than the height of the cylinder head of the diesel engine cylinder, which can avoid the interference of the cylinder head; one end of the pipe 1 is provided with a slide rod 2, which is connected to the radial hole on the pipe 1, and the slide rod 2 is along the direction of the pipe 1. The hole on the pipe can slide, and the torque can be applied to the pipe 1 through the sliding rod 2, and the interference of the intercooler of the diesel engine can be avoided; the other end of the pipe 1 is connected with three claws 3, and the side wall of the pipe 1 is provided with three There are two downward threaded holes, ...

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Abstract

The title of the present invention is an adjustable three-claw wrench, which relates to an adjustable three-claw wrench used for installing a fireproof board on a DF4D locomotive diesel engine. It mainly solves the problem that the size of the hexagonal nuts currently used for the fireproof board pressed on the cylinder of the diesel engine is different, and the space between the cylinder covers of the diesel engine is narrow, which brings difficulties to the tightening of the inner hexagonal nuts, low work efficiency and poor tightening effect The problem. The main body of the wrench of the present invention is a pipe, one end of the pipe is provided with a slide bar, the other end of the pipe is provided with three claws, and the three claws are obliquely connected to the pipe through threads. The main body of the wrench of the present invention adopts a tubular structure, which can improve the overall strength and reduce the weight. The claws of the wrench and the main body of the wrench are connected by threads, and the protruding amount of the claws can be adjusted to increase the variable diameter range; the present invention improves the The speed of tightening the fixing nut of the fireproof board ensures the tightening torque.

Description

technical field [0001] The invention relates to an adjustable three-claw wrench, in particular to an adjustable three-claw wrench used for installing a fireproof board on a DF4D locomotive diesel engine. Background technique [0002] In order to improve the safety of the locomotive diesel engine in operation, the locomotive diesel engine is equipped with a fireproof board, and the fireproof board is pressed on the cylinder bolt of the diesel engine through a thin hexagonal nut. Since the hexagonal nuts used by the locomotive depots of various railway bureaus and various local railway companies are of different sizes, and the space between the cylinder covers of diesel engines is narrow, it brings many difficulties to the tightening of the inner hexagonal nuts, and the work efficiency is low and the tightening effect is poor. Contents of the invention [0003] The object of the present invention is to address the above-mentioned deficiencies, and propose a versatile nut, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B13/48B25B13/24
CPCB25B13/48B25B13/24B25B13/481
Inventor 方猛
Owner CRRC LUOYANG CO LTD
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