CN215470779U

CN215470779U - Overload-proof torque wrench

Info

Publication number: CN215470779U
Application number: CN202121603763.7U
Authority: CN
Inventors: 曹强; 张盼; 刘淼; 于瑶瑶
Original assignee: Shenyang Lihongdeda Technology Co ltd
Current assignee: Shenyang Lihongdeda Technology Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2022-01-11
Anticipated expiration: 2031-07-15

Abstract

The utility model discloses an overload-proof torque wrench, which comprises a handle and a snap ring, wherein an upper positioning ring and a lower positioning ring are embedded in the periphery of the snap ring, a rotating ring is rotatably clamped between the upper positioning ring and the lower positioning ring, two bearing discs are fixedly installed at the left end in a cylinder of the handle, a window is formed in the handle between the two bearing discs, a threaded shaft is fixedly installed between the two bearing discs, an adjusting roller is sleeved on the periphery of the threaded shaft and exposed through the window, a threaded sleeve is screwed at the left end of the threaded shaft and is slidably installed in a table body of the rotating ring, a positioning pin is slidably installed in the table body of the rotating ring, and a spring is clamped between the positioning pin and the threaded sleeve; through the locating pin with the buckle ring on one-way tooth cooperate for the device carries on spacingly, and under the compression ratio regulation of spring, make the maximum load to work adjust, then make whole can avoid transshipping, thereby avoid damaging the screw thread.

Description

Overload-proof torque wrench

Technical Field

The utility model relates to the technical field of wrenches, in particular to an overload torque prevention wrench.

Background

The spanner carries out the auxiliary instrument who uses commonly in the mechanical repair operation, it can be through the structure of self, make whole operating torque be greater than nut moment, thereby realize effectual operation, reduce the operation degree of difficulty, current spanner is the fixed torque more, thereby make in the operation process because fastening load is great, make the screw thread of nut or screw rod take place to damage, then make the screw-thread fit inefficacy, need operating personnel to operate according to the experience of self with this whole fastening process, thereby avoid the damage to nut and screw rod, this kind of operation can lead to the fastening of nut and screw rod inconsistent, the laxity problem appears easily, we propose for this reason and prevent overload moment spanner.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an overload torque wrench to solve the above problems.

In order to achieve the purpose, the utility model provides the following technical scheme:

the overload-proof torque wrench comprises a handle and a clamping ring, wherein an upper positioning ring and a lower positioning ring are embedded in the periphery of the clamping ring, a rotating ring is clamped between the upper positioning ring and the lower positioning ring in a rotating mode, two bearing discs are fixedly installed at the left end in a cylinder of the handle, a window is formed in the handle between the two bearing discs, a threaded shaft is fixedly installed between the two bearing discs, an adjusting roller is sleeved on the periphery of the threaded shaft and exposed through the window, a threaded sleeve is screwed at the left end of the threaded shaft and is slidably installed in a rotating ring body, a positioning pin is slidably installed in the rotating ring body, a spring is clamped between the positioning pin and the threaded sleeve, the positioning pin is matched with the clamping ring, and the rotating ring body is fixedly installed on the handle.

Preferably, the buckle ring includes female ring, be regular hexagon hole in the female ring, the periphery integrated into one piece of female ring has the one-way tooth of evenly arranging, one-way tooth and locating pin are mutually supported.

Preferably, the rotating ring comprises a ring shell, an installation platform is integrally formed outside the ring shell, a sliding pin hole penetrating into the ring shell is formed in the installation platform, and the threaded sleeve and the positioning pin are both slidably installed in the sliding pin hole.

Preferably, the ball is clamped between the upper positioning ring and the rotating ring, and the ball is clamped between the lower positioning ring and the rotating ring.

Preferably, the left end of the threaded shaft is integrally formed with a limit ring, and the limit ring stops the threads.

Preferably, the handle has the same thickness as the snap ring.

Preferably, the upper positioning ring and the lower positioning ring are of a symmetrical structure, the upper end face of the upper positioning ring is flush with the upper end face of the clamping ring, and the lower end face of the lower positioning ring is flush with the lower end face of the clamping ring.

Compared with the prior art, the utility model has the beneficial effects that: through the locating pin with the buckle ring on one-way tooth cooperate for the device carries on spacingly, and under the compression ratio regulation of spring, make the maximum load to work adjust, then make whole can avoid transshipping, thereby avoid damaging the screw thread.

Drawings

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

FIG. 2 is a main sectional structural view of the present invention;

FIG. 3 is a schematic top view of the snap ring of the present invention;

FIG. 4 is a schematic view of the right side structure of the rotating ring of the present invention;

FIG. 5 is a schematic top view of the rotating ring of the present invention;

FIG. 6 is a main sectional structural schematic view of the rotating ring of the present invention.

In the figure: 1. handle, 2, snap ring, 21, female ring, 22, one-way tooth, 3, adjusting roller, 4, upper locating ring, 5, lower locating ring, 6, rotating ring, 61, ring shell, 62, mount table, 63, slide pin hole, 7, bearing disc, 8, threaded shaft, 9, thread bush, 10, spring, 11, locating pin.

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.

Referring to fig. 1-6, the present invention provides a technical solution: the overload moment preventing wrench comprises a handle 1 and a snap ring 2, wherein an upper positioning ring 4 and a lower positioning ring 5 are embedded on the periphery of the snap ring 2, a rotating ring 6 is rotatably clamped between the upper positioning ring 4 and the lower positioning ring 5, two bearing discs 7 are fixedly arranged at the left end in the cylinder of the handle 1, a window is arranged on the handle 1 between the two bearing discs 7, a threaded shaft 8 is fixedly arranged between the two bearing discs 7, the periphery of the threaded shaft 8 is sleeved with an adjusting roller 3, the adjusting roller 3 is exposed through a window, the left end of the threaded shaft 8 is screwed with a threaded sleeve 9, the threaded sleeve 9 is slidably mounted in the table body of the rotating ring 6, the positioning pin 11 is slidably mounted in the table body of the rotating ring 6, a spring 10 is clamped between the positioning pin 11 and the threaded sleeve 9, the positioning pin 11 is matched with the buckle ring 2, and the handle 1 is fixedly provided with a table body of the rotating ring 6.

Handle 1 and buckle ring 2 are main infrastructure, carry out the buckle to nut or screw cap through buckle ring 2, handle 1 carries out effectual moment and increases, go up holding ring 4 and the location that the holding ring 5 goes on rotatory ring 6 down, and handle 1 carries out effectual extension to rotatory ring 6, bearing disc 7 carries out effectual rotation installation to threaded spindle 8, adjusting roller 3 is through the rotation of self, make threaded spindle 8 rotate, threaded spindle 8 is through the cooperation with thread bush 9, make the pre-pressure of spring 10 adjust, thereby make the load of spacer pin adjust.

Specifically, the snap ring 2 comprises a female ring 21, a regular hexagonal hole is formed in the female ring 21, unidirectional teeth 22 which are uniformly distributed are integrally formed on the periphery of the female ring 21, and the unidirectional teeth 22 are matched with the positioning pins 11.

The regular hexagonal hole is matched with the nut or the nut for use, and the one-way teeth 22 can be effectively matched with the positioning pin 11 to realize one-way rotation limiting.

Specifically, the rotating ring 6 includes a ring case 61, a mounting table 62 is integrally formed on the outside of the ring case 61, a slide pin hole 63 penetrating into the ring case 61 is formed in the mounting table 62, and the threaded sleeve 9 and the positioning pin 11 are slidably mounted in the slide pin hole 63.

Ring shell 61 is infrastructure, and mount table 62 conveniently cooperates handle 1 to install, offers the basis for smooth pinhole 63 provides simultaneously, carries on spacingly through smooth pinhole 63.

Specifically, a ball is interposed between the upper ring 4 and the rotating ring 6, and a ball is interposed between the lower ring 5 and the rotating ring 6.

By the addition of the balls, the friction between the upper holding ring 4 and the rotating ring 6 is reduced, and the friction between the lower holding ring 5 and the rotating ring 6 is reduced.

Specifically, the left end of the threaded shaft 8 is integrally formed with a limit ring, and the limit ring stops the threads.

The back-off positioning of the thread bush 9 is limited by the limiting ring, and the slipping is avoided.

In particular, the thickness of the handle 1 is the same as the thickness of the snap ring 2.

The convenient effective cooperation of carrying out uses avoids because of the restriction of usage space for whole operation is unchangeable.

Specifically, go up holding ring 4 and lower location be symmetrical structure, the up end of going up holding ring 4 keeps flat with the up end of buckle ring 2, the lower terminal surface of lower holding ring 5 keeps flat with the lower terminal surface of buckle ring 2.

The overall device is defined.

The working principle is as follows: during the use, carry out the buckle with buckle ring 2 to nut or nut, then carry out the rotation operation through handle 1, according to the intensity of screw thread and fastening demand for adjust roll 3 adjusts the position of thread bush 9, makes the load of spring 10 to adjust then, thereby locating pin 11 adjusts with the work load of the one-way tooth 22 of buckle ring 2, when the load surpassed and establishes, locating pin 11 kick-backs, realizes anti-overloading.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Prevent overload moment spanner, including handle (1) and buckle ring (2), its characterized in that: an upper positioning ring (4) and a lower positioning ring (5) are embedded in the periphery of the snap ring (2), a rotating ring (6) is clamped between the upper positioning ring (4) and the lower positioning ring (5) in a rotating manner, two bearing disks (7) are fixedly installed at the left end in a cylinder of the handle (1), a window is formed in the handle (1) between the two bearing disks (7), a threaded shaft (8) is fixedly installed between the two bearing disks (7), an adjusting roller (3) is sleeved on the periphery of the threaded shaft (8), the adjusting roller (3) is exposed through the window, a threaded sleeve (9) is screwed at the left end of the threaded shaft (8), the threaded sleeve (9) is slidably installed in a table body of the rotating ring (6), a positioning pin (11) is slidably installed in the table body of the rotating ring (6), a spring (10) is clamped between the positioning pin (11) and the threaded sleeve (9), the positioning pin (11) is matched with the buckle ring (2), and the handle (1) is fixedly provided with a table body of the rotating ring (6).

2. The overload torque wrench as recited in claim 1, wherein: the clamping ring (2) comprises a female ring (21), a regular hexagonal hole is formed in the female ring (21), unidirectional teeth (22) which are uniformly distributed are integrally formed on the periphery of the female ring (21), and the unidirectional teeth (22) are matched with the positioning pin (11).

3. The overload torque wrench as recited in claim 1, wherein: the rotating ring (6) comprises a ring shell (61), an installation table (62) is integrally formed outside the ring shell (61), a sliding pin hole (63) penetrating into the ring shell (61) is formed in the installation table (62), and the threaded sleeve (9) and the positioning pin (11) are installed in the sliding pin hole (63) in a sliding mode.

4. The overload torque wrench as recited in claim 1, wherein: balls are clamped between the upper positioning ring (4) and the rotating ring (6), and balls are clamped between the lower positioning ring (5) and the rotating ring (6).

5. The overload torque wrench as recited in claim 1, wherein: the left end of the threaded shaft (8) is integrally formed with a limit ring, and the limit ring stops the threads.

6. The overload torque wrench as recited in claim 1, wherein: the thickness of the handle (1) is the same as that of the snap ring (2).

7. The overload torque wrench as recited in claim 1, wherein: the upper positioning ring (4) and the lower positioning ring are of a symmetrical structure, the upper end face of the upper positioning ring (4) is flush with the upper end face of the clamping ring (2), and the lower end face of the lower positioning ring (5) is flush with the lower end face of the clamping ring (2).