Clutch mechanism with motor protection

Abstract

The utility model relates to a clutch mechanism with motor protection, which comprises a motor and a safety component, and an output shaft is arranged on the motor. The safety assembly comprises a connecting sleeve, an output section and an elastic piece, the output shaft is connected with the connecting sleeve, and the output section can axially move relative to the connecting sleeve; the connecting sleeve is provided with a first face, the output section is provided with a second face, the first face is matched with the second face, and the first face is an inclined face or an arc face. The first face is coupled with the second face. The clutch mechanism with the motor protection function has the following advantages that after the limited torque is exceeded, the axial component force borne by the second face is larger than the pressure of the elastic piece, so that the elastic piece is compressed, the output section and the connecting sleeve can be automatically disengaged, the output shaft can be prevented from being broken, and the use safety of the motor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic welding equipment, in particular to a clutch mechanism with motor protection. Background Art

[0002] In the past 20 years, with the development of digitalization, automation, computer, mechanical design technology, and the high attention paid to welding quality, automatic welding has developed into an advanced manufacturing technology. The role of automatic welding equipment in various industrial applications is becoming more and more important, and the scope of application is expanding rapidly. In modern industrial production, the mechanization and automation of the welding production process is an inevitable trend in the modernization of the welding mechanism manufacturing industry.

[0003] Motors are often needed on automatic welding equipment, but existing motor connection shafts are basically hard-connected or flexible-connected. When the motor is subjected to force, the rotating shaft and the motor shaft cannot be disengaged, which can easily lead to the motor shaft breaking. Utility Model Content

[0004] An object of the present application is to provide a clutch mechanism with motor protection, which can automatically disengage when a limited torque is exceeded, thereby protecting the motor.

[0005] The technical solution adopted in the present application is: a clutch mechanism with motor protection, used in automatic welding equipment, including a motor and a safety component, the motor is provided with an output shaft; the safety component includes a connecting sleeve, an output section and an elastic member, the output shaft is connected to the connecting sleeve, and the output section can move axially relative to the connecting sleeve; a first surface is provided on the connecting sleeve, and a second surface is provided on the output section, the first surface and the second surface cooperate, and the first surface is an inclined surface or an arc surface; the first surface is coupled with the second surface, and the elastic member is used to make the first surface have a tendency to move toward the second surface so as to make the first surface fit the second surface.

[0006] Compared with the prior art, the advantage of the present application lies in that the first surface is coupled with the second surface, and the first surface and the second surface are tightly fitted by the elastic member. Within the limited torque, the connecting sleeve and the output section are in a connected state, and the output shaft of the motor can drive the output section to rotate, thereby ensuring the reliable working output of the motor; after exceeding the limited torque, the axial component force on the second surface is greater than the pressure of the elastic member, and the elastic member is compressed, so that the output section and the connecting sleeve are automatically disengaged, thereby preventing the output shaft from breaking and improving the safety of the motor.

[0007] In some embodiments of the present application, a working shaft is further included, and the output section is connected to the working shaft via a transmission assembly.

[0008] Furthermore, the transmission assembly includes a first synchronous wheel, a second synchronous wheel and a synchronous belt. The first synchronous wheel and the second synchronous wheel are connected by a synchronous belt. The first synchronous wheel is connected to the output section, and the second synchronous wheel is connected to the working shaft.

[0009] Furthermore, a synchronous belt pressure rod is provided beside the synchronous belt.

[0010] In some embodiments of the present application, the safety component further includes an input section, the output shaft is fixedly connected to the input section, and the input section is connected to the connecting sleeve.

[0011] In some embodiments of the present application, a manual disengagement component is further included, and the manual disengagement component is used to manually control the disengagement or adhesion of the first surface and the second surface.

[0012] Furthermore, the manual disengagement assembly includes a pull rod, one end of which is connected to the output section, and the pull rod can drive the output section to disengage from the connecting sleeve.

[0013] Furthermore, it also includes a shell, the motor, the safety component and the working shaft are all arranged in the shell, and the other end of the pull rod extends out of the shell.

[0014] Furthermore, the manual disengagement assembly also includes a wrench, which is arranged outside the shell and is rotatably connected to the pull rod through a rotating shaft.

[0015] Furthermore, the end of the wrench is in contact with the housing, the end of the wrench is arc-shaped, and the rotating shaft is eccentrically arranged at the end of the wrench.

[0016] Furthermore, a guide sleeve is provided between the housing and the pull rod.

[0017] Furthermore, the pull rod is L-shaped as a whole, and a U-shaped groove is provided at the top of the pull rod; an annular groove is provided at one end of the output section away from the connecting sleeve, and the U-shaped groove is clamped on the annular groove.

[0018] In some embodiments of the present application, the elastic member is a first spring, one end of which is fixed, and the other end of which is connected to the output section.

[0019] Furthermore, the first spring sleeve is provided with a fixed mounting box, the mounting box is provided with a through hole, part of the output section is passed through the through hole, the first spring sleeve is provided on the output section, a first sleeve and a second sleeve are provided on both sides of the mounting box and between the output section, one side of the first spring abuts against one side of the first sleeve, the other side of the first sleeve is connected to the output section, the other side of the first spring abuts against one side of the second sleeve, and the other side of the second sleeve abuts against the mounting box.

[0020] In some embodiments of the present application, the working shaft can move axially, and the axial direction of the working shaft is parallel to the moving direction of the output section; a first bevel gear is sleeved on the working shaft, and a second bevel gear is provided on the outside of the working shaft, and the second bevel gear cooperates with the first bevel gear.

[0021] Furthermore, a second spring is sleeved on the working shaft, one end of the second spring is fixed, and the other end is connected to the first bevel gear.

[0022] The utility model provides a clutch mechanism with motor protection, which has the following advantages: the motor shaft can be automatically disengaged when subjected to force, so that the motor shaft will not break, thereby achieving the effect of protecting the motor; when the output section is disengaged, the working shaft will also be driven to move, so that the first bevel gear and the second bevel gear are disengaged, which has a good protection effect on the clutch mechanism and is convenient for coupling with the first surface after the second surface is reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0024] Figure 2 It is a schematic structural diagram of a housing in Embodiment 1 of the present utility model;

[0025] Figure 3 is a cross-sectional view of a housing of Embodiment 1 of the present utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the output section of Embodiment 1 of the present utility model;

[0027] Figure 5 It is a structural schematic diagram of the connecting sleeve of Example 1 of the utility model.

[0028] In the figure: 1. motor; 2. safety component; 3. working shaft; 4. output shaft; 5. connecting sleeve; 6. output section; 7. elastic member; 8. first surface; 9. second surface; 10. transmission component; 11. first synchronous wheel; 12. second synchronous wheel; 13. synchronous belt; 14. input section; 15. manual disengagement component; 16. pull rod; 17. housing; 18. wrench; 19. rotating shaft; 20. guide sleeve; 21. U-shaped groove; 22. annular groove; 23. mounting box; 24. through hole; 25. first bushing; 26. second bushing; 27. first bevel gear; 28. second bevel gear; 29. ​​second spring; 30. synchronous belt pressure rod; 31. connector; 32. shaft section. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0030] Embodiment 1:

[0031] This embodiment provides a clutch mechanism with motor protection, such as Figure 1-Figure 5As shown, it includes a motor 1, a safety component 2 and a working shaft 3, the motor 1 is provided with an output shaft 4; the safety component 2 includes a connecting sleeve 5, an output section 6 and an elastic member 7, the output shaft 4 is connected to the connecting sleeve 5, and the output section 6 can move axially relative to the connecting sleeve 5; the connecting sleeve 5 is provided with a first surface 8, the output section 6 is provided with a second surface 9, the first surface 8 and the second surface 9 cooperate, and the first surface 8 is an inclined surface or an arc surface; the output section 6 is connected to the working shaft 3; the first surface 8 is coupled with the second surface 9, and the elastic member 7 is used to make the first surface 8 have a tendency to move toward the second surface 9 so as to make the first surface 8 fit the second surface 9. In this embodiment, the first surface 8 is an arc surface.

[0032] The first surface 8 and the second surface 9 are mutually matched inclined surfaces or arc surfaces, which can make the output section 6 receive an axial force component; the first surface 8 is coupled with the second surface 9, and the first surface 8 and the second surface 9 are tightly fitted through the elastic member 7. Within the limited torque, the connecting sleeve 5 and the output section 6 are in a connected state, and the output shaft 4 of the motor 1 can drive the output section 6 to rotate, thereby ensuring that the working output of the motor 1 is reliable; after exceeding the limited torque, the axial force component received on the second surface 9 is greater than the pressure of the elastic member 7, and the elastic member 7 is compressed, so that the output section 6 and the connecting sleeve 5 are automatically disengaged, thereby preventing the output shaft 4 from breaking and improving the safety of the motor 1.

[0033] For reliable output, the output section 6 is connected to the working shaft 3 via a transmission assembly 10. Through the transmission assembly 10, the output section 6 and the working shaft 3 can be set in a wider range of positions while ensuring the output effect.

[0034] In order to ensure the reliability of the transmission assembly 10, the transmission assembly 10 includes a first synchronous wheel 11, a second synchronous wheel 12 and a synchronous belt 13. The first synchronous wheel 11 and the second synchronous wheel 12 are connected by the synchronous belt 13. The first synchronous wheel 11 is connected to the output section 6, and the second synchronous wheel 12 is connected to the working shaft 3. A synchronous belt pressure rod 30 is provided next to the synchronous belt 13. The synchronous belt pressure rod 30 is used to press the synchronous belt 13 to ensure reliable rotation transmission of the synchronous belt 13. The synchronous belt 13 is used for transmission between the output section 6 and the working shaft 3. The transmission is reliable, the connection sleeve 5 and the output section 6 are easy to disengage, and the movement of a small distance has little effect on the synchronous belt 13.

[0035] In order to ensure reliable connection, the safety component 2 also includes an input section 14, the output shaft 4 is inserted into the input section 14 and the two are fixedly connected, and the connecting sleeve 5 is sleeved on the input section 14; the output section 6 includes a connector 31 and a shaft section 32, the second surface 9 is arranged on the connector 31, the connector 31 is concentric with the shaft section 32, the first synchronous wheel 11 is fixedly connected with the shaft section 32, and the annular groove 22 is arranged on the shaft section 32; the diameter of the shaft section 32 is smaller than the diameter of the connector 31, which can reduce the material, reduce the weight and reduce the cost; the outer diameters of the input section 14, the connecting sleeve 5 and the connecting sleeve 31 are the same, and the three are concentric. The design of the input section 14 can improve the strength of the output shaft 4 and make it easier to connect with the connecting sleeve 5.

[0036] In order to facilitate manual operation, a manual disengagement assembly 15 is also included, and the manual disengagement assembly 15 is used to manually control the disengagement or adhesion of the first surface 8 and the second surface 9; the manual disengagement assembly 15 includes a pull rod 16, one end of which is connected to the output section 6, and the pull rod 16 can drive the output section 6 to disengage from the connecting sleeve 5. By pulling the pull rod 16, the output section 6 can be driven to move, thereby controlling the output section 6 to disengage, and realizing manual operation disengagement.

[0037] For higher safety, it also includes a housing 17, in which the motor 1, the safety component 2 and the working shaft 3 are all arranged, and the other end of the pull rod 16 extends out of the housing 17; the manual disengagement component 15 also includes a wrench 18, which is arranged outside the housing 17 and is rotatably connected to the pull rod 16 through a rotating shaft 19; the end of the wrench 18 abuts against the housing 17, the end of the wrench 18 is arc-shaped, and the rotating shaft 19 is eccentrically arranged at the end of the wrench 18; a guide sleeve 20 is arranged between the housing 17 and the pull rod 16. The motor 1 is connected and fixed to the housing 17. The shell 17 can protect the internal components, and one end of the pull rod 16 extends out of the shell 17 for easy manual operation; the design of the wrench 18 makes it convenient for workers to pull the pull rod 16, which is more labor-saving and safer; the wrench 18 abuts against the shell 17 and the rotating shaft 19 is eccentrically set. When the wrench 18 is rotated, the distance between the rotating shaft 19 and the shell 17 will change, which will also drive the pull rod 16 to move, realizing manual operation. The end of the wrench 18 is arc-shaped, which can make it more convenient to rotate the wrench 16; the guide sleeve 20 is used to guide the pull rod 16 to ensure that the moving direction of the pull rod 16 is reliable.

[0038] In order to ensure the reliability of the pull rod 16, the pull rod 16 is L-shaped as a whole, and a U-shaped groove 21 is provided at the top of the pull rod 16; an annular groove 22 is provided at the end of the output section 6 away from the connecting sleeve 5, and the U-shaped groove 21 is clamped on the annular groove 22. The U-shaped groove 21 and the annular groove 22 are clamped, and the rotation of the output section 6 will not affect the pull rod 16, and when the pull rod 16 is pulled, the U-shaped groove 21 will first fit with the groove wall of the annular groove 22, and then push the annular groove 22 outward, so that the output section 6 moves outward.

[0039] In order to ensure reliable fit between the first surface 8 and the second surface 9, the elastic member 7 is a first spring, one end of which is fixed and the other end is connected to the output section 6. The spring has good compressibility and can automatically compress when the force exceeds the limit, thereby ensuring reliable automatic disengagement.

[0040] In order to make the use more reliable, the first spring sleeve is provided with a fixed mounting box 23, the mounting box 23 is provided with a through hole 24, part of the output section 6 is passed through the through hole 24, the first spring sleeve is arranged on the output section 6, and a first sleeve 25 and a second sleeve 26 are respectively provided on both sides of the mounting box 23 and between the output section 6, one side of the first spring abuts against one side of the first sleeve 25, the other side of the first sleeve 25 abuts against the first synchronous wheel 11, the other side of the first spring abuts against one side of the second sleeve 26, and the other side of the second sleeve 26 abuts against the mounting box 23; the mounting box 23 is fixedly connected to the housing 17. The installation box 23 can play a protective role to prevent debris from entering and affecting the first spring; the first sleeve 25 and the second sleeve 26 can support the output section 6 and facilitate the rotation of the output section 6. The first sleeve 25 abuts against the first synchronous wheel 11, and the second sleeve 26 abuts and is fixed to the installation box 23, so that the first spring can only be reset in the direction of the first sleeve 25, pushing the first sleeve 25 to move toward the connecting sleeve 5, and the first sleeve 25 pushes the first synchronous wheel 11, and the first synchronous wheel 11 is fixedly connected to the output section 6, which drives the output section 6 to move toward the connecting sleeve 5, so that the first surface 8 and the second surface 9 remain in a fitted state.

[0041] In order to ensure reliable disengagement, the working shaft 3 can move axially, and the axial direction of the working shaft 3 is parallel to the moving direction of the output section 6; a first bevel gear 27 is sleeved on the working shaft 3, and a second bevel gear 28 is provided on the outer side of the working shaft 3, the second bevel gear 28 cooperates with the first bevel gear 27, and the axial angle between the second bevel gear 28 and the first bevel gear 27 is 90°; a second spring 29 is sleeved on the working shaft 3, one end of the second spring 29 is fixed, and the other end is connected to the first bevel gear 27; when the first bevel gear 27 and the second bevel gear 28 are in meshing state, the first surface 8 and the second surface 9 can be in a coupled state. The working shaft 3 can move axially, so that when the output section 6 is disengaged, the synchronous belt 13 can drive the working shaft 3 to move synchronously; the first bevel gear 27 cooperates with the second bevel gear 28 to facilitate the disengagement and re-engagement of the first bevel gear 27 after moving with the working shaft 3. After the first bevel gear 27 is disengaged, the second surface 9 will not be restricted in rotation and can be easily fitted with the first surface 8. Compared with general gear meshing, the meshing of the bevel gears is easier to move axially outward and reset; the second spring 29 is used to make the first bevel gear 27 have a movement trend toward the second bevel gear 28, thereby making the first bevel gear 27 and the second bevel gear 28 in a meshing state.

[0042] During normal use, the output shaft 4 of the motor 1 rotates with the input section 14, and the input section 14 rotates synchronously with the connecting sleeve 5. The axial force component on the second surface 9 is insufficient, and the first surface 8 is coupled with the second surface 9, so that the connecting sleeve 5 rotates with the output section 6, and the rotation of the output section 6 is transmitted to the working shaft 3 through the synchronous belt 13, and the working shaft 3 drives the first bevel gear 27 to rotate, and the rotation of the first bevel gear 27 is transmitted to the second bevel gear 28; when the transmitted torque is greater than the set value, the axial force component on the second surface 9 is greater than the pressure of the elastic member 7, and the elastic member 7 is compressed, so that the output section 6 is disengaged from the connecting sleeve 5, and the two slide relative to each other to prevent the output shaft 4 from breaking; at the same time, the movement of the output section 6 will drive the synchronous belt 13 to move, and the synchronous belt 13 will drive the working shaft 3 to move, so that the first bevel gear 27 and the second bevel gear 28 are disengaged.

[0043] During manual operation, the user turns the wrench 18, the eccentric rotating shaft 19 will pull the pull rod 16 outward, and the U-shaped groove 21 on the pull rod 16 will drive the output section 6 to move outward, so that the first surface 8 is disengaged from the second surface 9; at the same time, the movement of the output section 6 will drive the synchronous belt 13 to move, and the synchronous belt 13 will drive the working shaft 3 to move, so that the first bevel gear 27 and the second bevel gear 28 are disengaged.

[0044] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A clutch mechanism with motor protection, characterized in that: The invention comprises a motor (1) and a safety component (2), wherein the motor (1) is provided with an output shaft (4); the safety component (2) comprises a connecting sleeve (5), an output section (6) and an elastic member (7), wherein the output shaft (4) is connected to the connecting sleeve (5), and the output section (6) can move axially relative to the connecting sleeve (5); the connecting sleeve (5) is provided with a first surface (8), and the output section (6) is provided with a second surface (9), wherein the first surface (8) and the second surface (9) cooperate, and the first surface (8) is an inclined surface or an arc surface; the first surface (8) and the second surface (9) are coupled, and the elastic member (7) is used to make the first surface (8) have a tendency to move toward the second surface (9), thereby making the first surface (8) and the second surface (9) fit together.

2. A clutch mechanism with motor protection according to claim 1, characterized in that: It also includes a manual disengagement component (15), which is used to manually control the disengagement or adhesion of the first surface (8) and the second surface (9); the manual disengagement component (15) includes a pull rod (16), one end of which is connected to the output section (6), and the pull rod (16) can drive the output section (6) to disengage from the connecting sleeve (5).

3. A clutch mechanism with motor protection according to claim 2, characterized in that: The pull rod (16) is L-shaped as a whole, and a U-shaped groove (21) is provided at the top end of the pull rod (16); an annular groove (22) is provided at one end of the output section (6) away from the connecting sleeve (5), and the U-shaped groove (21) is clamped on the annular groove (22).

4. A clutch mechanism with motor protection according to claim 2, characterized in that: The manual disengagement assembly (15) further comprises a housing (17), wherein the motor (1) and the safety assembly (2) are both arranged in the housing (17), and the other end of the pull rod (16) extends out of the housing (17); the manual disengagement assembly (15) further comprises a wrench (18), wherein the wrench (18) is arranged outside the housing (17), and the wrench (18) is rotatably connected to the pull rod (16) via a rotating shaft (19); the end of the wrench (18) abuts against the housing (17), the end of the wrench (18) is arc-shaped, and the rotating shaft (19) is eccentrically arranged at the end of the wrench (18); and a guide sleeve (20) is arranged between the housing (17) and the pull rod (16).

5. The clutch mechanism with motor protection according to claim 1 is characterized in that: The safety component (2) further comprises an input section (14), the output shaft (4) is fixedly connected to the input section (14), and the input section (14) is connected to the connecting sleeve (5).

6. The clutch mechanism with motor protection according to claim 1 is characterized in that: The elastic member (7) is a first spring, one end of which is fixed and the other end of which is connected to the output section (6).

7. A clutch mechanism with motor protection according to claim 6, characterized in that: The first spring sleeve is provided with a fixed mounting box (23), the mounting box (23) is provided with a through hole (24), a part of the output section (6) is passed through the through hole (24), the first spring sleeve is arranged on the output section (6), a first shaft sleeve (25) and a second shaft sleeve (26) are respectively provided between the two sides of the mounting box (23) and the output section (6), one side of the first spring abuts against one side of the first shaft sleeve (25), the other side of the first shaft sleeve (25) is connected to the output section (6), the other side of the first spring abuts against one side of the second shaft sleeve (26), and the other side of the second shaft sleeve (26) abuts against the mounting box (23).

8. The clutch mechanism with motor protection according to claim 1, characterized in that: It also comprises a working shaft (3), and the output section (6) is connected to the working shaft (3) via a transmission assembly (10).

9. A clutch mechanism with motor protection according to claim 8, characterized in that: The working shaft (3) is axially movable, and the axial direction of the working shaft (3) is parallel to the moving direction of the output section (6); a first bevel gear (27) is sleeved on the working shaft (3), a second bevel gear (28) is provided on the outer side of the working shaft (3), and the second bevel gear (28) cooperates with the first bevel gear (27); a second spring (29) is sleeved on the working shaft (3), one end of the second spring (29) is fixed, and the other end is connected to the first bevel gear (27).

10. The clutch mechanism with motor protection according to claim 8, characterized in that: The transmission assembly (10) comprises a first synchronous wheel (11), a second synchronous wheel (12) and a synchronous belt (13); the first synchronous wheel (11) and the second synchronous wheel (12) are connected via the synchronous belt (13); the first synchronous wheel (11) is connected to the output section (6), and the second synchronous wheel (12) is connected to the working shaft (3); a synchronous belt pressure rod (30) is provided next to the synchronous belt (13).

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