One-way ratchet device

Abstract

The utility model relates to the technical field of bearings, in particular to a one-way ratchet device, when the one-way ratchet device is used, a ratchet assembly enables a rotating shaft to rotate clockwise under the cooperation of the bearings and prevents the rotating shaft from rotating anticlockwise, meanwhile, the ratchet assembly is arranged in a sleeve, and the two ends of the sleeve are sealed through sealing assemblies. The winding damage of the ratchet wheel assembly to operators is avoided, meanwhile, the abrasion of the outside to the ratchet wheel assembly is avoided, and the service life of the ratchet wheel assembly is prolonged; comprising a mounting base, a sleeve, a bearing and a rotating shaft, the sleeve is arranged on the mounting base, the bearing is arranged in the sleeve, the left end of the rotating shaft penetrates through the bearing and extends to the left side of the sleeve, the ratchet wheel assembly is arranged at the right end of the rotating shaft on the inner side of the sleeve, and the sealing assemblies are arranged at the two ends of the sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a one-way ratchet device. Background Art

[0002] One-way bearings are bearings that can rotate freely in one direction and are locked in the other direction. One-way bearings are widely used in many fields such as textile machinery, printing machinery, agricultural machinery, etc., and can effectively prevent the problem of reverse rotation.

[0003] In the prior art, the one-way ratchet device rotates unidirectionally through a ratchet assembly, but the ratchet assembly is arranged on the outside of the one-way ratchet device. During use, the ratchet assembly may cause entanglement and injury to the operator, and the external part of the ratchet assembly is severely worn, thereby reducing the service life of the ratchet assembly. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a one-way ratchet device with increased service life.

[0005] The one-way ratchet device of the utility model comprises a mounting seat, a sleeve, a bearing and a rotating shaft, wherein the mounting seat is provided with a sleeve, a bearing is provided inside the sleeve, the left end of the rotating shaft passes through the bearing and extends to the left side of the sleeve, and further comprises a ratchet assembly and a sealing assembly, wherein the right end of the rotating shaft is provided with a ratchet assembly on the inner side of the sleeve, and sealing assemblies are provided at both ends of the sleeve; when in use, the ratchet assembly enables the rotating shaft to rotate clockwise with the cooperation of the bearing and prevents the rotating shaft from rotating counterclockwise, and at the same time, the ratchet assembly is inside the sleeve, and both ends of the sleeve are sealed by the sealing assembly, thereby avoiding the ratchet assembly from causing entanglement damage to the operator and avoiding external wear on the ratchet assembly, thereby improving the service life of the ratchet assembly.

[0006] Preferably, the ratchet assembly includes a ratchet body, a notch, a notch A part, a notch B part, a positioning disk, a spring and a cylindrical pin. The right end of the rotating shaft is provided with a ratchet body, and the outer wall of the ratchet body is circumferentially provided with multiple groups of notches, the notch is composed of a notch A part and a notch B part, and the space from the notch A part to the notch B part gradually decreases. The right end of the positioning disk is close to the left end of the ratchet body, a cylindrical pin is placed in the notch, and a spring is provided in the notch A part. When in use, when the rotating shaft rotates clockwise, the ratchet body drives the multiple groups of springs and The cylindrical pin rotates clockwise, and the cylindrical pins in each group of notches move closer to notch A. At the same time, the corresponding spring is compressed, and the outer wall of the cylindrical pin contacts the inner wall of the sleeve, so that the cylindrical pin does not interfere with the clockwise rotation of the shaft. When the shaft rotates counterclockwise, the cylindrical pin approaches notch B under the action of the corresponding spring force, and the outer walls of multiple groups of cylindrical pins are pressed against the inner wall of the sleeve under the action of notch B, thereby preventing the ratchet body from rotating counterclockwise, and further preventing the shaft from rotating counterclockwise.

[0007] Preferably, the sealing assembly includes a sealing ring and a sealing plate. The sealing ring is mounted on the outer wall of the rotating shaft and seals the left end of the sleeve, and the sealing plate seals the right end of the sleeve. The sealing ring and the sealing plate cooperate with each other to seal the sleeve to prevent soil, sand or powder in the working environment from entering the interior of the sleeve, thereby increasing the service life of the bearing and ratchet assembly.

[0008] Preferably, the cylindrical pin is made of bearing steel; the cylindrical pin made of bearing steel has improved hardness and wear resistance.

[0009] Preferably, the mounting seat and the sleeve are connected by welding; welding between the mounting seat and the sleeve improves the firmness of the connection.

[0010] Preferably, the sleeve is made of high carbon steel quenched; the sleeve is made of high carbon steel quenched to improve wear resistance and crack resistance.

[0011] Compared with the prior art, the utility model has the following beneficial effects: when in use, the ratchet assembly enables the rotating shaft to rotate clockwise with the cooperation of the bearing and prevents the rotating shaft from rotating counterclockwise; at the same time, the ratchet assembly is inside the sleeve, and both ends of the sleeve are sealed by a sealing assembly, thereby avoiding the ratchet assembly from causing entanglement damage to the operator and avoiding external wear on the ratchet assembly, thereby increasing the service life of the ratchet assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the explosion structure of the utility model;

[0013] Figure 2 It is an enlarged structural schematic diagram of structures such as a rotating shaft and a ratchet body;

[0014] Figure 3 yes Figure 2 A partial enlarged structural diagram of the middle part;

[0015] Figure 4 It is a schematic diagram of the cross-sectional structure of the ratchet body and the sleeve;

[0016] Figure 5 It is an axonometric structural schematic diagram of the utility model.

[0017] Markings in the accompanying drawings: 1. mounting seat; 2. sleeve; 3. bearing; 4. rotating shaft; 5. ratchet body; 6. notch; 7. notch A part; 8. notch B part; 9. positioning plate; 10. spring; 11. cylindrical pin; 12. sealing ring; 13. sealing plate. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0019] Example 1

[0020] like Figure 1 and Figure 5 As shown, the one-way ratchet device of the utility model comprises a mounting seat 1, a sleeve 2, a bearing 3 and a rotating shaft 4. The mounting seat 1 is provided with a sleeve 2, the sleeve 2 is provided with a bearing 3 inside, the left end of the rotating shaft 4 passes through the bearing 3 and extends to the left side of the sleeve 2, and further comprises a ratchet assembly and a sealing assembly. The right end of the rotating shaft 4 is provided with a ratchet assembly on the inner side of the sleeve 2, and sealing assemblies are provided at both ends of the sleeve 2.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the ratchet assembly includes a ratchet body 5, a notch 6, a notch A portion 7, a notch B portion 8, a positioning plate 9, a spring 10 and a cylindrical pin 11. The ratchet body 5 is arranged at the right end of the rotating shaft 4. The outer wall of the ratchet body 5 is circumferentially provided with multiple groups of notches 6. The notch 6 is composed of the notch A portion 7 and the notch B portion 8. The space from the notch A portion 7 to the notch B portion 8 is gradually reduced. The right end of the positioning plate 9 is close to the left end of the ratchet body 5. A cylindrical pin 11 is placed in the notch 6. A spring 10 is arranged in the notch A portion 7. The mounting seat 1 and the sleeve 2 are connected by welding or can be integrally cast.

[0022] In this embodiment, when in use, when the rotating shaft 4 rotates clockwise, the ratchet body 5 drives the multiple groups of springs 10 and the cylindrical pins 11 to rotate clockwise. At this time, the cylindrical pins 11 in each group of notches 6 move closer to the notch A part 7, and at the same time the corresponding springs 10 are compressed, and the outer wall of the cylindrical pins 11 contacts the inner wall of the sleeve 2, so that the cylindrical pins 11 will not interfere with the clockwise rotation of the rotating shaft 4. When the rotating shaft 4 rotates counterclockwise, the cylindrical pins 11 approach the notch B part 8 under the action of the corresponding spring 10 elastic force, and the outer walls of the multiple groups of cylindrical pins 11 are pressed against the inner wall of the sleeve 2 under the action of the notch B part 8, thereby preventing the ratchet body 5 from rotating counterclockwise, and further preventing the rotating shaft 4 from rotating counterclockwise.

[0023] Example 2

[0024] like Figure 1 and Figure 5As shown, the one-way ratchet device of the utility model comprises a mounting seat 1, a sleeve 2, a bearing 3 and a rotating shaft 4. The mounting seat 1 is provided with a sleeve 2, the sleeve 2 is provided with a bearing 3 inside, the left end of the rotating shaft 4 passes through the bearing 3 and extends to the left side of the sleeve 2, and further comprises a ratchet assembly and a sealing assembly. The right end of the rotating shaft 4 is provided with a ratchet assembly on the inner side of the sleeve 2, and sealing assemblies are provided at both ends of the sleeve 2.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the ratchet assembly includes a ratchet body 5, a notch 6, a notch A portion 7, a notch B portion 8, a positioning plate 9, a spring 10 and a cylindrical pin 11. The ratchet body 5 is arranged at the right end of the rotating shaft 4. The outer wall of the ratchet body 5 is circumferentially provided with multiple groups of notches 6. The notch 6 is composed of the notch A portion 7 and the notch B portion 8. The space from the notch A portion 7 to the notch B portion 8 is gradually reduced. The right end of the positioning plate 9 is close to the left end of the ratchet body 5. A cylindrical pin 11 is placed in the notch 6. A spring 10 is arranged in the notch A portion 7. The mounting seat 1 and the sleeve 2 are connected by welding or can be integrally cast.

[0026] like Figure 1 and Figure 5 As shown, the sealing assembly includes a sealing ring 12 and a sealing plate 13. The sealing ring 12 is sleeved on the outer wall of the rotating shaft 4 and seals the left end of the sleeve 2, and the sealing plate 13 seals the right end of the sleeve 2. The number of the notches 6 is five groups.

[0027] In this embodiment, the sealing ring 12 and the sealing plate 13 cooperate with each other to seal the sleeve 2 to prevent soil, sand or powder in the working environment from entering the interior of the sleeve 2, thereby improving the service life of the bearing 3 and the ratchet assembly. During use, when the rotating shaft 4 rotates clockwise, the ratchet body 5 drives multiple groups of springs 10 and cylindrical pins 11 to rotate clockwise. At this time, the cylindrical pins 11 in each group of notches 6 move closer to the notch A part 7, and at the same time, the corresponding springs 10 are compressed, and the outer wall of the cylindrical pins 11 contacts the inner wall of the sleeve 2, so that the cylindrical pins 11 will not interfere with the clockwise rotation of the rotating shaft 4. When the rotating shaft 4 rotates counterclockwise, the cylindrical pins 11 approach the notch B part 8 under the action of the corresponding spring 10 elastic force, and the outer walls of the multiple groups of cylindrical pins 11 are pressed against the inner wall of the sleeve 2 under the action of the notch B part 8, thereby preventing the ratchet body 5 from rotating counterclockwise, and further preventing the rotating shaft 4 from rotating counterclockwise.

[0028] The bearing 3, ratchet body 5, spring 10 and cylindrical pin 11 of the one-way ratchet device of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for technicians in this field to make creative efforts.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A one-way ratchet device, comprising a mounting seat (1), a sleeve (2), a bearing (3) and a rotating shaft (4), wherein the mounting seat (1) is provided with a sleeve (2), the sleeve (2) is provided with a bearing (3) inside, the left end of the rotating shaft (4) passes through the bearing (3) and extends to the left side of the sleeve (2), characterized in that: It also comprises a ratchet assembly and a sealing assembly. The right end of the rotating shaft (4) is provided with a ratchet assembly on the inner side of the sleeve (2), and sealing assemblies are provided at both ends of the sleeve (2).

2. The one-way ratchet device according to claim 1, characterized in that: The ratchet assembly comprises a ratchet body (5), a notch (6), a notch A portion (7), a notch B portion (8), a positioning plate (9), a spring (10) and a cylindrical pin (11). The ratchet body (5) is arranged at the right end of the rotating shaft (4). A plurality of notches (6) are arranged circumferentially on the outer wall of the ratchet body (5). The notch (6) is composed of the notch A portion (7) and the notch B portion (8). The space from the notch A portion (7) to the notch B portion (8) is gradually reduced. The right end of the positioning plate (9) is close to the left end of the ratchet body (5). A cylindrical pin (11) is placed in the notch (6), and a spring (10) is arranged in the notch A portion (7).

3. The one-way ratchet device according to claim 1, characterized in that: The sealing assembly comprises a sealing ring (12) and a sealing plate (13). The sealing ring (12) is sleeved on the outer wall of the rotating shaft (4) and seals the left end of the sleeve (2), while the sealing plate (13) seals the right end of the sleeve (2).

4. The one-way ratchet device according to claim 2, characterized in that: The cylindrical pin (11) is made of bearing steel.

5. The one-way ratchet device according to claim 1, characterized in that: The mounting seat (1) and the sleeve (2) are connected by welding.

6. The one-way ratchet device according to claim 1 or 5, characterized in that: The sleeve (2) is made of high carbon steel subjected to quenching treatment.

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