CN210189635U

CN210189635U - Pneumatic ratchet mechanism

Info

Publication number: CN210189635U
Application number: CN201920849695.9U
Authority: CN
Inventors: Xiupeng Li; 李秀鹏; Ce Tan; 谭策; Jianing Wu; 吴嘉宁; Guizhong Lai; 赖桂忠
Original assignee: Hangzhou Magic Image Intelligent Technology Co ltd
Current assignee: Hangzhou Magic Image Intelligent Technology Co ltd
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2020-03-27
Anticipated expiration: 2029-06-05

Abstract

The utility model relates to a pneumatic ratchet mechanism, including mechanism body, ratchet, pawl, bearing assembly and former subassembly of returning, the ratchet passes through the bearing assembly with mechanism body swing joint, former subassembly sets up on the mechanism body, be provided with the ratchet on the ratchet, the pawl sets up the ratchet with between the former subassembly, the pawl with mechanism body swing joint, the outer wall of mechanism body is provided with the trachea mount table, the inside of trachea mount table be provided with run through to the air vent of mechanism body inner wall, the trachea mount table passes through the trachea and is connected with outside air supply. The utility model discloses a pneumatic ratchet simple structure, convenient to use, cost of maintenance is low.

Description

Pneumatic ratchet mechanism

Technical Field

The utility model relates to a rotatory technical field of ratchet, concretely relates to pneumatic ratchet.

Background

At present, the ratchet mechanism is quite wide in application field and is often used in the environments of automatic production lines, robot operation and the like. The ratchet mechanism may be used not only for steering articles, but also for performing object rotations, such as robot arm rotations, etc.

Most of the current ratchet mechanisms are driven by servo motors, the working environment requirement of the ratchet mechanisms is high, and the working effect under the humid environment is not ideal. In addition, this type of ratchet mechanism has high impact during operation, high operational rigidity, high manufacturing cost and inconvenient maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome above-mentioned prior art at least a defect, provide a pneumatic ratchet, the operational environment requirement is not high, it is convenient to dismantle, cost of maintenance is low.

In order to solve the technical problem, the utility model provides a following technical scheme:

the pneumatic ratchet mechanism comprises a mechanism body, a ratchet wheel, a pawl, a bearing assembly and a restoring assembly, wherein the ratchet wheel is movably connected with the mechanism body through the bearing assembly, the restoring assembly is arranged on the mechanism body, the ratchet wheel is provided with ratchets, the pawl is arranged between the ratchets and the restoring assembly, the pawl is movably connected with the mechanism body, the outer wall of the mechanism body is provided with an air pipe installation table, the air pipe installation table is internally provided with air holes penetrating to the inner wall of the mechanism body, and the air pipe installation table is connected with an external air source through an air pipe. The utility model discloses a pneumatic ratchet simple structure only needs to carry out simple lock joint alright connect, and it is convenient to dismantle, and later maintenance is more convenient, greatly reduced cost of maintenance, the maintenance duration that has also significantly reduced simultaneously improves work efficiency.

Further, the bearing assembly comprises a first elastic retainer ring, a second elastic retainer ring and a deep groove ball bearing, the inner wall of the mechanism body is sequentially provided with a first clamping groove and a bearing mounting step from top to bottom, the lower part of the ratchet wheel is provided with a second clamping groove, the deep groove ball bearing is placed on the bearing mounting step, the first elastic retainer ring is placed on the first clamping groove, the lower part of the ratchet wheel penetrates through the inner ring of the deep groove ball bearing to be connected with the deep groove ball bearing, the second elastic retainer ring is placed on the second clamping groove, the deep groove ball bearing is placed between the first clamping groove and the second clamping groove, the position of the deep groove ball bearing is fixed by arranging the two elastic check rings, screws, nuts and the like are not needed to be connected, and the disassembly and the assembly of the ratchet can be simply and quickly completed by utilizing the elasticity of the elastic check rings.

Further, the recovery subassembly is including returning former spring and fixed pin, be provided with back former spring draw-in groove and installation counter bore on the mechanism body, the fixed pin passes insert after returning former spring in the installation counter bore, the one end of returning former spring is placed in returning former spring draw-in groove, the other end that returns former spring withstands the pawl, the pawl is spacing to the ratchet, prevents that the ratchet is rotatory in the opposite direction.

Furthermore, a rotary arc-shaped tooth groove is formed between the ratchets, so that the impact area of gas on the tooth groove is larger during operation, and the ratchet wheel is more easily pushed to rotate.

Furthermore, the mechanism body is provided with a mounting boss, the pawl is mounted on the mounting boss and movably connected with the mounting boss, the pawl is enabled to abut against the ratchet of the ratchet wheel by the elasticity of the return spring, and the ratchet wheel can be prevented from rotating once rotating by one ratchet wheel, so that the limiting is effectively carried out.

Furthermore, the number of the ratchets is 12, the angle between the ratchets is 30 degrees, the ratchet rotates 30 degrees every time the ratchet rotates, the pawl limits the ratchet once, the rotating angle of the ratchet can be distinguished according to the collision sound of the pawl and the ratchets, the rotating number of circles of the ratchet can be counted, in addition, the rotating angle of the ratchet is related to the air pressure supplied by an external air source, the ratchet can be debugged according to the rotating angle of the ratchet and the corresponding air quantity before use, a comparison table of the air quantity and the rotating angle is formed, the corresponding air quantity can be released according to the rotating angle required, and the ratchet can be better used.

Furthermore, the ratchet wheel and the deep groove ball bearing are in interference fit, the deep groove ball bearing and the mechanism body are in interference fit, friction force and running friction loss generated in the running process are reduced, the running process is smooth, and the service life of the ratchet wheel mechanism is prolonged.

Furthermore, the inside of the ratchet wheel is of a hollow structure, and a control circuit through hole longitudinally penetrating through the ratchet wheel is formed in the ratchet wheel, so that the control circuit of an external structural member can be conveniently arranged.

Furthermore, an external structural part connecting plane is arranged above the ratchet wheel, and further processing can be carried out according to the external structural part.

Furthermore, the mechanism body, the ratchet wheel and the pawl are all formed by 3D printing, and are simple to process, low in manufacturing cost, small in appearance and light in weight.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a pneumatic ratchet adopts gaseous drive, utilizes the trachea to carry the gas of outside air supply to the mechanism body, and gaseous promotion ratchet is rotatory, and the trachea is arranged and is had the variety, has solved ordinary ratchet and has needed the motor to carry out driven space limitation and installation complexity, in addition, the utility model discloses a pneumatic ratchet simple structure only needs to carry out simple lock joint alright connect, and it is convenient to dismantle, and later maintenance is more convenient, greatly reduced cost of maintenance, the maintenance duration that has also significantly reduced simultaneously improves work efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of the pneumatic ratchet mechanism of the present invention.

Fig. 2 is a half sectional view of the pneumatic ratchet mechanism of the present invention.

Fig. 3 is a schematic structural view of a ratchet of the pneumatic ratchet mechanism of the present invention.

Fig. 4 is a schematic structural view of the ratchet body of the pneumatic ratchet mechanism of the present invention.

Fig. 5 is a view of the pneumatic ratchet mechanism of the present invention at rest.

Fig. 6 is a view of the pneumatic ratchet mechanism of the present invention in operation.

In the figure: 1. a mechanism body; 2. a ratchet wheel; 3. a pawl; 4. a ratchet; 5. a gas pipe mounting table; 6. a first circlip; 7. a second circlip; 8. a deep groove ball bearing; 9. a first card slot; 10. a second card slot; 11. a bearing mounting step; 12. a return spring; 13. a fixing pin; 14. returning to the original spring clamping groove; 15. mounting a counter bore; 16. a tooth socket; 17. mounting a boss; 18. and a control line through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The embodiment of the utility model provides an include:

as shown in fig. 1 and fig. 3, the pneumatic ratchet mechanism comprises a mechanism body 1, a ratchet 2, a pawl 3, a bearing assembly and a restoring assembly, wherein the ratchet 2 is movably connected with the mechanism body 1 through the bearing assembly, the restoring assembly is arranged on the mechanism body 1, the ratchet 2 is provided with a ratchet 4, the pawl 3 is arranged between the ratchet 4 and the restoring assembly, the pawl 3 is movably connected with the mechanism body 1, the outer wall of the mechanism body 1 is provided with an air pipe installation table 5, the air pipe installation table 5 is internally provided with an air hole penetrating through the inner wall of the mechanism body 1, the air pipe installation table 5 is connected with an external air source through an air pipe, the pneumatic ratchet mechanism adopts gas drive, the air pipe is used for conveying the gas of the external air source to the mechanism body 1, the air pushes the ratchet 2 to rotate, the arrangement of the air pipe has diversity, and the space limitation and installation complexity of the common ratchet mechanism which needs to, the utility model discloses a pneumatic ratchet simple structure only needs to carry out simple lock joint alright connect, and it is convenient to dismantle, and later maintenance is more convenient, greatly reduced cost of maintenance, the maintenance duration that has also significantly reduced simultaneously improves work efficiency.

As shown in fig. 2 and 4, the bearing assembly includes a first elastic collar 6, a second elastic collar 7 and a deep groove ball bearing 8, a first clamping groove 9 and a bearing mounting step 11 are sequentially arranged on the inner wall of the mechanism body 1 from top to bottom, a second clamping groove 10 is arranged on the lower portion of the ratchet 2, the deep groove ball bearing 8 is placed on the bearing mounting step 11, the first elastic collar 6 is placed on the first clamping groove 9, the lower portion of the ratchet 2 passes through the inner ring of the deep groove ball bearing 8 to be connected with the deep groove ball bearing 8, the second elastic collar 7 is placed on the second clamping groove 10, the deep groove ball bearing 8 is placed between the first clamping groove 9 and the second clamping groove 10, the position of the deep groove ball bearing 8 is fixed by arranging the two elastic check rings, screws, nuts and the like are not needed to be connected, and the ratchet 2 can be simply and quickly detached and installed by utilizing the elasticity of the elastic check rings.

As shown in fig. 1, 4, 5 and 6, the restoring assembly includes a restoring spring 12 and a fixing pin 13, a restoring spring slot 14 and an installation counterbore 15 are arranged on the mechanism body 1, the fixing pin 13 penetrates through the restoring spring 12 and then is inserted into the installation counterbore 15, one end of the restoring spring 12 is placed in the restoring spring slot 14, the other end of the restoring spring 12 abuts against the pawl 3, and the pawl 3 limits the ratchet 2 to prevent the ratchet 2 from rotating in the opposite direction.

As shown in fig. 3, a circular arc-shaped tooth groove 16 is formed between the ratchet teeth 4, so that the impact area of the gas on the tooth groove 16 is larger during operation, and the ratchet 2 is more easily pushed to rotate.

As shown in fig. 4, 5 and 6, the mechanism body 1 is provided with a mounting boss 17, the pawl 3 is mounted on the mounting boss 17 and movably connected with the mounting boss 17, the pawl 3 is pressed against the ratchet teeth 4 of the ratchet 2 by the elasticity of the return spring 12, and the ratchet 2 can be prevented from rotating after the ratchet 2 rotates one ratchet tooth 4, thereby effectively performing the limit.

In this embodiment, the number of the ratchets 4 is 12, the angle between the ratchets 4 is 30 degrees, the ratchet 2 rotates 30 degrees every time the ratchet rotates, the pawl 3 performs one-time limit, the rotating angle of the ratchet 2 can be distinguished according to the collision sound of the pawl 3 and the ratchets 4, and the number of the rotating circles of the ratchet 2 can be counted.

In this embodiment, the connection and assembly mode of the ratchet 2 and the deep groove ball bearing 8 is interference fit, and the connection and assembly mode of the deep groove ball bearing 8 and the mechanism body 1 is interference fit, so that the friction force and the running friction loss generated in the running process are reduced, the running process is smooth, and the service life of the ratchet 2 mechanism is prolonged.

As shown in fig. 2 and 3, the inside of the ratchet 2 is a hollow structure, and a control circuit through hole 18 longitudinally penetrating through the ratchet 2 is formed in the ratchet 2, so that the control circuit arrangement of an external structural member is facilitated.

In this embodiment, an external structural member connecting plane is arranged above the ratchet 2, and further processing can be performed according to the external structural member.

In this embodiment, the mechanism body 1, the ratchet 2 and the pawl 3 are all formed by 3D printing, and are simple to process, low in manufacturing cost, small in appearance and light in weight.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims

1. The pneumatic ratchet mechanism is characterized by comprising a mechanism body, a ratchet wheel, a pawl, a bearing assembly and a recovery assembly, wherein the ratchet wheel is movably connected with the mechanism body through the bearing assembly, the recovery assembly is arranged on the mechanism body, the ratchet wheel is provided with ratchets, the pawl is arranged between the ratchets and the recovery assembly, the pawl is movably connected with the mechanism body, the outer wall of the mechanism body is provided with an air pipe installation table, air holes penetrating through the inner wall of the mechanism body are formed in the air pipe installation table, and the air pipe installation table is connected with an external air source through air pipes.

2. The pneumatic ratchet mechanism according to claim 1, wherein the bearing assembly comprises a first elastic check ring, a second elastic check ring and a deep groove ball bearing, a first clamping groove and a bearing mounting step are sequentially arranged on the inner wall of the mechanism body from top to bottom, a second clamping groove is arranged on the lower portion of the ratchet wheel, the deep groove ball bearing is placed on the bearing mounting step, the first elastic check ring is placed on the first clamping groove, the lower portion of the ratchet wheel penetrates through an inner ring of the deep groove ball bearing to be connected with the deep groove ball bearing, the second elastic check ring is placed on the second clamping groove, and the deep groove ball bearing is placed between the first clamping groove and the second clamping groove.

3. The pneumatic ratchet mechanism according to claim 1, wherein the restoring assembly comprises a restoring spring and a fixing pin, the mechanism body is provided with a restoring spring slot and a mounting counter bore, the fixing pin passes through the restoring spring and then is inserted into the mounting counter bore, one end of the restoring spring is placed in the restoring spring slot, and the other end of the restoring spring abuts against the pawl.

4. The pneumatic ratchet mechanism according to claim 1, wherein the mechanism body is provided with a mounting boss, and the pawl is mounted on the mounting boss and movably connected with the mounting boss.

5. The pneumatic ratchet mechanism of claim 1, wherein the number of the ratchet teeth is 12, and the angle between the ratchet teeth is 30 degrees.

6. The pneumatic ratchet mechanism of claim 2, wherein the ratchet wheel is in interference fit with the deep groove ball bearing, and the deep groove ball bearing is in interference fit with the mechanism body.

7. The pneumatic ratchet mechanism according to claim 1, wherein the ratchet wheel has a hollow interior, and the ratchet wheel has a control circuit through hole longitudinally penetrating the ratchet wheel.

8. The pneumatic ratchet mechanism according to claim 1, wherein an external structural member connecting plane is provided above the ratchet.

9. The pneumatic ratchet mechanism according to any one of claims 1 to 8, wherein the mechanism body, the ratchet wheel and the pawl are all 3D printed.