CN113199429A

CN113199429A - Adjustable nut dismounting device

Info

Publication number: CN113199429A
Application number: CN202110564963.4A
Authority: CN
Inventors: 刘丽丽; 杨丽娟; 陈壮; 刘文君; 徐友龙
Original assignee: Xuzhou University of Technology
Current assignee: Xuzhou University of Technology
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-08-03
Anticipated expiration: 2041-05-24
Also published as: CN113199429B

Abstract

The invention discloses an adjustable nut dismounting device. Comprises a disc, the upper end of which is fixed with a handle; a counter bore is formed in the center of the lower end of the disc, and an ejector rod is installed on one side of the counter bore; the periphery of the disc is provided with a circle of sliding grooves, and both sides of the ejector rod are provided with through holes for communicating the sliding grooves and the counter bores; the chain is arranged in the counter bore, two ends of the chain penetrate through the corresponding through holes to enter the sliding grooves, and two ends of the chain are respectively connected with a fastening device; the fastening device is movably mounted on the disc. Aiming at the nut with worn edges and corners, the periphery of the nut is surrounded by the chain, the chain is locked by the fastening device and matched with the ejector rod, the nut is fastened by the nut dismounting device, and finally the nut is dismounted by rotating the handle; the dismounting device occupies small space and can adapt to dismounting of nuts of different sizes.

Description

Adjustable nut dismounting device

Technical Field

The invention relates to a wrench, in particular to an adjustable nut dismounting device.

Background

The assembly of most machines needs the nut, and the monkey wrench is a nut extracting tool commonly used in life. The Chinese patent discloses a fast moving adjustable wrench (CN 98229650.9), a fast driving mechanism is arranged in a wrench body, the wrench body consists of a driving transmission system and a driven transmission system, the association between the systems is realized by the meshing of a driving bevel gear and a driven bevel gear, a sliding button is arranged on the wrench body side and is arranged in a spiral groove of a driving sliding rod, the end part of the sliding rod is fixed on the driving bevel gear, and when the wrench is operated, the sliding rod of the button is pushed to rotate to cause a worm to rotate, so that a movable jaw meshed with the worm is driven to open and close.

In the above technology, the jaw of the adjustable wrench can be adjusted to adapt to nuts with different sizes, but the technology is a two-side contact stress, and the defects exist:

sometimes, the space where the nut needing to be disassembled is small, the shifting wrench cannot normally rotate, and the T-shaped wrench does not have the adjusting capacity;

in addition, along with the time lapse, in addition to the incomplete corrosion of the defeat of wind and rain, the nut is difficult to avoid can be destroyed become less complete, also is easy to be ground off the edges and corners after dismantling many times, so use traditional two sides atress spanner instrument just to skid easily, be difficult to lift off the nut.

Disclosure of Invention

The invention aims to provide an adjustable nut dismounting device which can be used for dismounting nuts with worn edges and corners.

The invention is realized by the following technical scheme: an adjustable nut dismounting device comprises a disc, wherein a handle is fixed at the upper end of the disc; a counter bore is formed in the center of the lower end of the disc, and an ejector rod is installed on one side of the counter bore; the periphery of the disc is provided with a circle of sliding grooves, and both sides of the ejector rod are provided with through holes for communicating the sliding grooves and the counter bores; the chain is arranged in the counter bore, two ends of the chain penetrate through the corresponding through holes to enter the sliding grooves, and two ends of the chain are respectively connected with a fastening device; the fastening device is movably mounted on the disc.

It further comprises the following steps: the handle comprises a telescopic rod which is fixed at the upper end of the disc and is coaxially arranged with the disc.

The upper end of the telescopic rod is provided with a through hole, and a force application rod is arranged in the through hole of the telescopic rod.

The telescopic rod comprises a sleeve fixed at the upper end of the disc, and an inner rod is sleeved in the sleeve in a sliding manner; one side of the inner rod is milled with a positioning plane; the sleeve is provided with a positioning bolt through threaded connection; the inner end of the positioning bolt is provided with a positioning disc, and the positioning disc is in contact with the positioning plane.

The ejector rod is fixed on one side of the counter bore.

The ejector rod is provided with an external thread, the ejector rod is connected with one side of the counter bore through the thread, and the ejector rod faces to the center of the counter bore.

The fastening device comprises a rod body, and the chain is fixed in the middle of the rod body; a circle of positioning grooves are formed in the lower end face of the disc, and a hook plate is fixed to the lower end of the rod body and is hooked in the positioning grooves; the upper end of the rod body is provided with a gasket and a fastening nut; the gasket and the fastening nut are pressed on the upper end face of the disc.

Compared with the prior art, the invention has the beneficial effects that: aiming at the nut with worn edges and corners, a chain is adopted to surround the circumferential surface of the nut, the chain is locked through a fastening device and matched with an ejector rod, the nut is fastened through a nut dismounting device, and finally the nut is dismounted by rotating a handle; the dismounting device occupies small space and can adapt to dismounting of nuts of different sizes.

Drawings

FIG. 1 is a schematic perspective view (top view) of the present invention;

FIG. 2 is a schematic perspective view (down view) of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a right side view of the present invention;

FIG. 5 is a bottom view of the present invention;

in the figure: 1. a disc; 1-1, counter bores; 1-2, a chute; 1-3, positioning grooves; 2. a top rod; 3. a chain; 4. a fastening device; 4-1, a rod body; 4-2, hooking plates; 4-3, a gasket; 4-4, fastening a nut; 5. a handle; 5-1, sleeve; 5-2, an inner rod; 5-3, positioning a plane; 5-4, positioning bolts; 6. a stress application rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 5, in the adjustable nut dismounting device, a coaxial handle 5 is fixed at the upper end of a disc 1, and the rotation of the disc 1 is controlled by the handle 5. The handle 5 adopts a telescopic rod structure and can be adjusted according to the depth of the space where the nut is located. The telescopic rod comprises a sleeve 5-1, an inner rod 5-2 and a positioning bolt 5-4. The inner rod 5-2 is sleeved in the sleeve 5-1 in a sliding mode, and a positioning plane 5-3 is milled on one side of the inner rod 5-2. The positioning bolt 5-4 is installed on one side of the sleeve 5-1 through threaded connection, a positioning disc is arranged at the inner end of the positioning bolt 5-4, and the positioning disc is in contact with the positioning plane 5-3. Through the matching of the positioning disc and the positioning plane 5-3, the relative rotation of the sleeve 5-1 and the inner rod 5-2 can be prevented, and the guiding of the inner rod 5-2 can be realized.

The through-hole has been seted up to the telescopic link upper end, installs the atress pole 6 in the telescopic link through-hole, plays laborsaving effect through atress pole 6, is convenient for control handle 5 disc 1's rotation.

The lower end of the disc 1 is provided with a circular counter bore 1-1, and the circular counter bore 1-1 is concentric with the disc 1. One side of the counter bore 1-1 is provided with a mandril 2, and both sides of the mandril 2 are provided with through holes for communicating the chute 1-2 with the counter bore 1-1. The periphery of the disc 1 is provided with a circle of sliding grooves 1-2, the middle part of the chain 3 is arranged in the counter bore 1-1, and two ends of the chain 3 penetrate through corresponding through holes to enter the sliding grooves 1-2. The sliding groove 1-2 can ensure that the chain does not deviate in use.

Two ends of the chain 3 are respectively connected with a fastening device 4 for realizing the locking of the chain 3 and ensuring the fixation of the chain. Fastening device 4 the fastening device 4 comprises a rod body 4-1, a hook plate 4-2, a gasket 4-3 and a fastening nut 4-4. The chain 3 is fixed in the middle of the rod body 4-1, and the hook plate 4-2 is fixed at the lower end of the rod body 4-1. A circle of positioning grooves 1-3 are formed in the lower end face of the disc 1, and the hook plate 4-2 is hooked in the positioning grooves 1-3 and can slide. The upper end of the rod body 4-1 is provided with an external thread, and the upper end is provided with a gasket 4-3 and a fastening nut 4-4. The rod body 4-1 is positioned at one side of the disc 1 through the matching of the fastening nut 4-4 and the hook plate 4-2.

In this embodiment, the lift pin 2 may be fixed or movable. When the ejector rod 2 is movably arranged, an external thread is arranged on the ejector rod 2, a threaded hole is formed in one side of the counter bore 1-1, the ejector rod 2 is connected with the threaded hole of the counter bore 1-1 through a thread, and the ejector rod 2 faces to the center of the counter bore 1-1; therefore, the ejector rod 2 is rotated to move towards the center of the counter bore 1-1 and can be matched with the chain 3 to further lock the nut to be disassembled.

This embodiment has used the chain to realize fastening and fixing to the nut, and the chain can make the nut by many-sided fastening, and at the direction of tightening up of chain still a body of rod 4-1, the rough treatment is carried out to body of rod 4-1 terminal surface, plays fixed effect to the nut for the nut can not slide at the in-process of dismantling.

Application method

Firstly, a counter bore 1-1 on the bottom surface of a dismounting device needs to cover a nut to be dismounted;

pulling the chain 3 to the position of the nut which can fix and place the nut to be disassembled along the sliding groove 1-2;

then a matched socket wrench is used for applying force to the fastening nut 4-4 to fix the position of the chain 3;

finally, the height of the handle 5 is properly adjusted according to the environment of the nut to be disassembled;

after the nut is ready, the nut can be detached by rotating the force applying rod 6 at the upper end of the handle 5.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a nut dismounting device with adjustable which characterized in that: comprises a disc (1), wherein a handle (5) is fixed at the upper end of the disc (1); a counter bore (1-1) is formed in the center of the lower end of the disc (1), and an ejector rod (2) is installed on one side of the counter bore (1-1); the periphery of the disc (1) is provided with a circle of sliding grooves (1-2), and both sides of the ejector rod (2) are provided with through holes for communicating the sliding grooves (1-2) with the counter bores (1-1); the chain (3) is arranged in the counter bore (1-1), two ends of the chain (3) penetrate through the corresponding through holes to enter the sliding chutes (1-2), and two ends of the chain (3) are respectively connected with a fastening device (4); the fastening device (4) is movably arranged on the disc (1).

2. The adjustable nut remover as claimed in claim 1, wherein: the handle (5) comprises a telescopic rod which is fixed at the upper end of the disc (1) and is coaxially arranged with the disc (1).

3. The adjustable nut remover as claimed in claim 2, wherein: the upper end of the telescopic rod is provided with a through hole, and a force application rod (6) is arranged in the through hole of the telescopic rod.

4. The adjustable nut remover as claimed in claim 2, wherein: the telescopic rod comprises a sleeve (5-1) fixed at the upper end of the disc (1), and an inner rod (5-2) is sleeved in the sleeve (5-1) in a sliding manner; one side of the inner rod (5-2) is milled with a positioning plane (5-3); the sleeve (5-1) is provided with a positioning bolt (5-4) through threaded connection; the inner end of the positioning bolt (5-4) is provided with a positioning disc, and the positioning disc is in contact with the positioning plane (5-3).

5. The adjustable nut remover as claimed in claim 1, wherein: the ejector rod (2) is fixed on one side of the counter bore (1-1).

6. The adjustable nut remover as claimed in claim 1, wherein: the ejector rod (2) is provided with an external thread, the ejector rod (2) is connected with one side of the counter bore (1-1) through the thread, and the ejector rod (2) faces to the center of the counter bore (1-1).

7. The adjustable nut remover as claimed in claim 1, wherein: the fastening device comprises a rod body (4-1), and the chain (3) is fixed in the middle of the rod body (4-1); a circle of positioning grooves (1-3) are formed in the lower end face of the disc (1), a hook plate (4-2) is fixed to the lower end of the rod body (4-1), and the hook plate (4-2) is hooked in the positioning grooves (1-3); the upper end of the rod body (4-1) is provided with a gasket (4-3) and a fastening nut (4-4); the gasket (4-3) and the fastening nut (4-4) are pressed on the upper end face of the disc (1).