CN210476763U

CN210476763U - Tool for disassembling and assembling round nut

Info

Publication number: CN210476763U
Application number: CN201921075283.0U
Authority: CN
Inventors: 刘辉; 李兆鹏; 姜明成; 于海龙; 孙立强; 王维兵; 王丽娜; 曲福文
Original assignee: Bingshan Technical Service Dalian Co ltd
Current assignee: Bingshan Technical Service Dalian Co ltd
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-05-08
Anticipated expiration: 2029-07-10

Abstract

The utility model belongs to the technical field of assembly and disassembly tools, especially, relate to an instrument for dismouting round nut for the round nut dismouting in restricted space, for example screw compressor's round nut dismouting. The tool comprises a screw die, a screw die seat and a stressing rod; the screw die seat is fixed at the end part of the stress application rod, and the screw dies are symmetrically fixed on the upper surface of the screw die seat through screws. The tool for disassembling and assembling the round nut of the utility model only has the small volume and the simple structure of the screw die which is made of tool steel with high material and processing cost, and the other parts are made of carbon structural steel with low material and processing cost, so that the cost is greatly reduced; if part of the threading dies are seriously worn or broken in the using process, only part of the threading dies need to be replaced, the whole set of tool can be continuously used, and the maintenance cost is very low.

Description

Tool for disassembling and assembling round nut

Technical Field

The utility model belongs to the technical field of assembly and disassembly tools, especially, relate to an instrument for dismouting round nut for the round nut dismouting in restricted space, for example screw compressor's round nut dismouting.

Background

Round nuts are mostly fine threads and are often used for connection with larger diameters. The bearing is generally used together with a stop washer and is mainly used for axial positioning of a rolling bearing. In order to make the equipment structure more compact, the round nut is often positioned in the inner cavity of the equipment, and the round nut is very inconvenient to disassemble and assemble by using a conventional tool. The conventional round nut dismounting tool is generally of an integrated structure and is machined from the same material, and due to the requirements on strength and hardness of the dismounting tool, the conventional tool generally and integrally adopts tool steel, so that the cost is high. The local stress of the part of the dismounting tool contacted with the round nut is the largest, and the damage is the most serious. Conventional tools are difficult to repair if they are partially damaged, and often the entire tool can only be scrapped.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a convenient operation, with low costs to be convenient for the maintenance, be used for dismouting round nut's instrument.

A tool for disassembling and assembling a round nut comprises a threading die 1, a threading die seat 2 and a stressing rod 4; the wrench tooth seat 2 is fixed at the end part of the stress application rod 4, the plurality of wrench teeth 1 are symmetrically fixed on the upper surface of the wrench tooth seat 2 through screws 3, and the wrench teeth 1 can be detached and replaced.

The stress application rod 4 is made of carbon structural steel, arc transition is arranged at the welding position of the stress application rod and the threading die seat 2, and a hole is formed in the tail of the stress application rod 4 and used for accommodating tools.

The wrench tooth seat 2 is made of carbon structural steel and is of a stepped tubular structure, the outer diameter of the upper half part is larger than that of the lower half part, the diameter D1 of an inner hole of the upper half part is larger than that of a round nut, and the diameter D2 of the inner hole of the lower half part is larger than that of a shaft matched with the round nut; the die 1 is fixed on the upper surface of the upper half part of the die seat 2, the round nut is clamped in the inner hole of the upper half part of the die seat 2, and the shaft matched with the round nut is positioned in the inner hole of the lower half part of the die seat 2; the height H of the die base is determined according to the installation position of the round nut, and the height of the upper half part of the die base 2 is determined by the thickness of the round nut.

Threading die 1 make by the tool steel, for the type structure of doglegging, its bulge is crest 5 of threading die 1, crest 5 is protruding to 2 axle center directions of threading die seat, crest 5 and round nut fluting department cooperate to block round nut, the root processing of crest 5 is the fillet in order to reduce the local stress of during operation, can change if threading die 1 damages.

The working principle is as follows: the tool is sleeved on a shaft, all the threading dies 1 are pushed into the corresponding round nut slotting parts, the thread tops 5 of the threading dies 1 are completely occluded with the round nut slotting parts, required torque is applied to the stressing rod 4, the tool can apply uniform torque to the round nut through the threading dies 1, the round nut is enabled to rotate on the shaft, and therefore the function of disassembling and assembling the round nut is achieved.

The utility model has the advantages that: the tool for disassembling and assembling the round nut of the utility model only has the small volume and the simple structure of the screw die which is made of tool steel with high material and processing cost, and the other parts are made of carbon structural steel with low material and processing cost, so that the cost is greatly reduced; if part of the threading dies are seriously worn or broken in the using process, only part of the threading dies need to be replaced, the whole set of tool can be continuously used, and the maintenance cost is very low.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a top view of the present invention.

In the figure: 1, threading die; 2 a spanner seat; 3, a screw; 4, a stress application rod; 5, crest; h, the height of the wrench socket; l stress application rod length; d1 inner bore diameter of upper half; d2 inner bore diameter of lower half.

Detailed Description

The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.

As shown in fig. 1 and 2, a tool for disassembling and assembling a round nut includes a plurality of dies 1, 1 die base 2, a plurality of screws 3, and 1 stressing rod 4; the plurality of screw dies 1 are uniformly fixed on the screw die base 2 through screws 3, and the number of the screw dies 1 is determined by the structure of the round nut; one end of the stress application rod 4 is connected with the threading die seat 2 in a welding way. The threading die 1 is made of tool steel, the thread tops 5 of the threading die are matched with the slotting part of the round nut, the root parts of the thread tops 5 are provided with round corners so as to reduce local stress during working, and the threading die 1 can be replaced if damaged. The die seat 2 is made of carbon structural steel, the diameter D1 of an inner hole of the upper half portion of the die seat is larger than the outer diameter of the round nut, the diameter D2 of an inner hole of the lower half portion of the die seat is larger than the outer diameter of a shaft matched with the round nut, and the height H of the die seat is determined according to the depth of the round nut. The stress application rod 4 is made of carbon structural steel, the welding position of the stress application rod and the threading die seat 2 is in arc transition, and the length L of the stress application rod is determined according to the torque to be applied and the space. The tool is sleeved on a shaft, the tooth tops 5 of all the screw threads 1 are pushed into the corresponding round nut slotting parts, the screw threads 1 are completely occluded with the round nut slotting parts, required torque is applied to the stressing rod 4, the tool can apply uniform torque to the round nut through the screw threads 1, and the round nut is enabled to rotate on the shaft. Thereby achieving the function of dismounting the round nut.

The wrench tooth seat 2 is integrally similar to a stepped tubular structure, and can be inserted into an annular narrow space between the outer edge of the round nut and the machine body, so that the round nut in a limited space can be disassembled and assembled.

The utility model discloses a tool for disassembling and assembling round nut, only the screw die 1 with small volume and simple structure is the tool steel with high material and processing cost, and the rest part is the carbon structural steel with low material and processing cost, so that the cost is greatly reduced; if part of the threading die 1 is seriously worn or broken in the using process, only part of the threading die 1 needs to be replaced, the whole set of tools can be continuously used, and the maintenance cost is low. Therefore, the utility model is well applied to the actual production.

Claims

1. The tool for disassembling and assembling the round nut is characterized by comprising a threading die (1), a threading die seat (2) and a stressing rod (4); the wrench tooth seat (2) is fixed at the end part of the stressing rod (4), the plurality of wrench teeth (1) are symmetrically fixed on the upper surface of the wrench tooth seat (2) through screws (3), and the wrench teeth (1) can be detached and replaced;

the welding position of the stress application rod (4) and the wrench tooth seat (2) is provided with arc transition, and the tail part of the stress application rod (4) is provided with a hole for accommodating tools;

the threading die seat (2) is of a stepped tubular structure, the outer diameter of the upper half part is larger than that of the lower half part, the inner hole diameter (D1) of the upper half part is larger than that of the round nut, and the inner hole diameter (D2) of the lower half part is larger than that of a shaft matched with the round nut; the screw die (1) is fixed on the upper surface of the upper half part of the screw die seat (2), the round nut is clamped in the inner hole of the upper half part of the screw die seat (2), and a shaft matched with the round nut is positioned in the inner hole of the lower half part of the screw die seat (2); the height (H) of the wrench tooth seat is determined according to the installation position of the round nut, and the height of the upper half part of the wrench tooth seat (2) is determined by the thickness of the round nut;

the threading die (1) is of a convex structure, the convex part of the threading die (1) is a crest (5), the crest (5) protrudes towards the axis direction of the threading die base (2), the crest (5) is matched with the slotting part of the round nut to clamp the round nut, and the root part of the crest (5) is processed into a round angle.

2. A tool for dismounting round nuts according to claim 1, characterized in that said forcing rod (4) and said die block (2) are made of carbon structural steel, and said die (1) is made of tool steel.