Anti-overload two-stage transmission worm and gear speed reducer

Abstract

The utility model relates to the technical field of speed reducer devices, and discloses an anti-overload two-stage transmission worm and gear speed reducer which comprises a speed reducer body, an output shaft is arranged on the front face of the speed reducer body, and an input shaft is arranged on the left side of the speed reducer body. And the separation transmission mechanism is arranged on the speed reducer main body and the output shaft, and the separation transmission mechanism is used for enabling the output shaft to be detachably connected with the driven part. By means of the design of the dynamic torque sensor, torque borne by the output shaft can be monitored, after the torque reaches a preset value, the controller body can control the electric valve to be opened, then the elastic piece resets and stretches, the inner sliding block is promoted to slide towards the front face, and the protruding block is promoted to be withdrawn from the interior of the groove; therefore, the function of disconnecting transmission of the driven part on the output shaft and the flange connecting shaft is achieved, and the safety of the speed reducer body in the using process is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of speed reducer devices, specifically to an overload-resistant two-stage transmission worm gear reducer. Background Technology

[0002] A speed reducer is an independent component consisting of gear drives, worm drives, or gear-worm drives enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between a prime mover and a working machine. A two-stage worm gear reducer is a speed reduction device that uses a two-stage worm gear transmission structure. By connecting two sets of worm gear pairs in series, it achieves a larger reduction ratio and higher torque output.

[0003] Existing two-stage transmission worm gear reducers do not have the function of preventing torque overload. Torque overload refers to the situation where the torque that the reducer bears under overload conditions exceeds its rated torque. This situation can easily lead to the breakage and damage of transmission components, and may even affect the operation of the entire machine, thus causing significant economic losses to users. Utility Model Content

[0004] The purpose of this invention is to provide an overload-resistant two-stage transmission worm gear reducer, which solves the problem that torque overload in the prior art can easily lead to the breakage and damage of the internal transmission components of the reducer.

[0005] This utility model provides the following technical solution: an overload-resistant two-stage transmission worm gear reducer, comprising:

[0006] The reducer body has an output shaft on its front side and an input shaft on its left side.

[0007] A detachable transmission mechanism is provided on the reducer body and the output shaft, and the detachable transmission mechanism is used to enable a detachable connection between the output shaft and the driven component.

[0008] A separation drive mechanism is provided on the separation transmission mechanism and is used to drive the separation transmission mechanism to perform separation work.

[0009] As a preferred embodiment of the above technical solution, the separation transmission mechanism includes a support platform, which is fixedly installed on the front of the reducer body. A support leg is fixedly installed on the top of the support platform, and a dynamic torque sensor is fixedly installed at the end of the support leg away from the support platform. The dynamic torque sensor is fixedly connected to the middle of the output shaft, and a controller body is fixedly installed on the top of the support platform.

[0010] Through the above technical solution, the design of a dynamic torque sensor can monitor torque, facilitating the implementation of overload protection functions.

[0011] As a preferred embodiment of the above technical solution, the separation transmission mechanism further includes a first connector, which is fixedly connected to the end of the output shaft. A groove is provided on the side of the first connector away from the output shaft, and a protrusion is movably inserted into the inner cavity of the groove. A second connector is fixedly installed on the side of the protrusion away from the first connector, and a branch connecting rod is fixedly installed on the side of the second connector away from the protrusion.

[0012] Through the above technical solution, the design of grooves and protrusions enables the No. 1 connector and the No. 2 connector to be driven or separated.

[0013] As a preferred embodiment of the above technical solution, a connecting plate is slidably connected to the outer wall of the branch connecting rod, and a flange connecting shaft is fixedly installed on the side of the connecting plate away from the second connecting head.

[0014] The above technical solution, through the design of the flange connecting shaft, facilitates its connection with the driven component.

[0015] As a preferred embodiment of the above technical solution, the separation drive mechanism includes a support sleeve and a square tube. The support sleeve is rotatably connected to the outer wall of the second connector. A receiving block is fixedly installed at the bottom of the support sleeve. An installation block is fixedly installed on the outer wall of the square tube. The installation block is detachably connected to the top of the support platform.

[0016] The above technical solution, through the design of the support sleeve, facilitates pushing the No. 2 connector during its rotation.

[0017] As a preferred embodiment of the above technical solution, an electric valve is fixedly connected to the top of the square tube, an elastic element is fixedly installed on the back of the inner wall of the square tube, an inner slider is fixedly connected to the front of the elastic element, a rubber sleeve is fixedly fitted on the outer wall of the inner slider, and the outer wall of the rubber sleeve is slidably connected to the inner wall of the square tube.

[0018] Through the above technical solution, the inner cavity of the square tube can be opened and closed by the design of the electric valve, which facilitates the control of the state of the elastic element.

[0019] As a preferred embodiment of the above technical solution, a limiting block is fixedly installed on the inner wall of the square tube. The front of the limiting block is movably connected to the back of the inner slider. An extension rod is fixedly installed on the front of the inner slider. The end of the extension rod away from the inner slider extends to the front of the square tube and is fixedly connected to an assembly block. The assembly block is detachably connected to the back of the receiving block.

[0020] The above technical solution, through the design of the assembly block, facilitates the disassembly of the receiving block and the square tube as a whole.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This invention utilizes a dynamic torque sensor to monitor the torque applied to the output shaft. Upon reaching a preset value, the controller opens an electric valve, allowing external gas to flow into the inner cavity of the square tube. This causes the elastic element to reset and extend, propelling the inner slider forward. Through the transmission of the extension rod, receiving block, and support sleeve, the second connector moves forward, causing the protrusion to retract from the groove. This disconnects the transmission between the output shaft and the driven component on the flange connection shaft, preventing damage to the internal transmission components of the reducer due to torque overload, increasing the safety of the reducer during use, and reducing economic losses for the user. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present utility model;

[0024] Figure 2 This is a schematic diagram of the separation transmission mechanism and separation drive mechanism of this utility model;

[0025] Figure 3 This is a schematic diagram of the separation structure of connector No. 1 and connector No. 2 of this utility model;

[0026] Figure 4 This is a schematic diagram of the square tube structure of this utility model;

[0027] Figure 5 This is a cross-sectional structural diagram of the square tube of this utility model.

[0028] In the diagram: 1. Reducer body; 11. Output shaft; 12. Input shaft; 2. Separation transmission mechanism; 21. Support platform; 22. Support leg; 23. Dynamic torque sensor; 24. Controller body; 25. Connector No. 1; 26. Groove; 27. Protrusion; 28. Connector No. 2; 29. ​​Branch connecting rod; 291. Connecting plate; 292. Flange connecting shaft; 3. Separation drive mechanism; 31. Support sleeve; 32. Receiving block; 33. Square tube; 331. Electric valve; 332. Limiting block; 333. Inner slider; 334. Rubber sleeve; 335. Elastic element; 336. Extension rod; 337. Assembly block; 34. Mounting block. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] like Figures 1-5 As shown, this utility model provides a technical solution: an overload-resistant two-stage transmission worm gear reducer, comprising:

[0031] The reducer body 1 has an output shaft 11 on its front and an input shaft 12 on its left side.

[0032] Separation transmission mechanism 2 is installed on the reducer body 1 and the output shaft 11. Separation transmission mechanism 2 is used to enable the output shaft 11 to be detachably connected to the driven component.

[0033] Separation drive mechanism 3 is mounted on separation transmission mechanism 2 and is used to drive separation transmission mechanism 2 to perform separation work.

[0034] As one implementation method in this embodiment, such as Figure 2 As shown, the separation transmission mechanism 2 includes a support platform 21, which is fixedly installed on the front of the reducer body 1. A support leg 22 is fixedly installed on the top of the support platform 21. A dynamic torque sensor 23 is fixedly installed at the end of the support leg 22 away from the support platform 21. The dynamic torque sensor 23 is fixedly connected to the middle of the output shaft 11. A controller body 24 is fixedly installed on the top of the support platform 21. The dynamic torque sensor 23 is an existing structure, which is used to monitor the torque on the output shaft 11 and feed the monitored data back to the controller body 24. The model of the dynamic torque sensor 23 is SY-664. An overload value is preset at the controller body 24. When the torque monitored by the dynamic torque sensor 23 reaches the preset value, the controller body 24 will control the electric valve 331 to open, so as to interrupt the transmission function and ensure the safety of the reducer body 1.

[0035] As one implementation method in this embodiment, such as Figure 3 As shown, the separation transmission mechanism 2 also includes a first connector 25, which is fixedly connected to the end of the output shaft 11. A groove 26 is provided on the side of the first connector 25 away from the output shaft 11. A protrusion 27 is movably inserted into the inner cavity of the groove 26. A second connector 28 is fixedly installed on the side of the protrusion 27 away from the first connector 25. A branch connecting rod 29 is fixedly installed on the side of the second connector 28 away from the protrusion 27. A connecting plate 291 is slidably connected to the outer wall of the branch connecting rod 29. A connecting plate 291 is fixedly installed on the side of the connecting plate 291 away from the second connector 28. Equipped with a flange connecting shaft 292, before using this structure, the end of the flange connecting shaft 292 needs to be fixedly installed on the driven component. During the operation of the reducer body 1, it can drive the output shaft 11 to rotate, thereby providing power to the driven component through the first connector 25, the protrusion 27, the second connector 28, the branch connecting rod 29, the connecting plate 291, and the flange connecting shaft 292. The second connector 28 can slide towards the driven component on the connecting plate 291 with the help of the branch connecting rod 29, causing the protrusion 27 to be withdrawn from the inside of the groove 26, thus achieving the effect of interrupting the transmission.

[0036] As one implementation method in this embodiment, such as Figure 4 , Figure 5 As shown, the separation drive mechanism 3 includes a support sleeve 31 and a square tube 33. The support sleeve 31 is rotatably connected to the outer wall of the second connector 28. A receiving block 32 is fixedly installed at the bottom of the support sleeve 31. An installation block 34 is fixedly installed on the outer wall of the square tube 33. The installation block 34 is detachably connected to the top of the support platform 21. An electric valve 331 is fixedly connected to the top of the square tube 33. An elastic element 335 is fixedly installed on the back of the inner wall of the square tube 33. An inner slider 333 is fixedly connected to the front of the elastic element 335. A rubber sleeve 334 is fixedly fitted onto the outer wall of the inner slider 333. The outer wall of sleeve 334 is slidably connected to the inner wall of square tube 33. A limit block 332 is fixedly installed on the inner wall of square tube 33. The front of the limit block 332 is movably connected to the back of the inner slider 333. An extension rod 336 is fixedly installed on the front of the inner slider 333. The end of the extension rod 336 away from the inner slider 333 extends to the front of square tube 33 and is fixedly connected to an assembly block 337. The assembly block 337 is detachably connected to the back of the receiving block 32. During the production process of square tube 33, the electric valve 331 is opened in advance, and then the input end of the air pump is connected to the electric valve 331. At position 31, the air pump is controlled to extract gas from inside the square cylinder 33. Because the inner slider 333 is sealed to the inner wall of the square cylinder 33 through the rubber sleeve 334, the inner slider 333 will slide, compressing the elastic element 335. Then, the inner slider 333 is limited by the limit block 332, and the electric valve 331 is closed to lock the position of the inner slider 333. When the output shaft 11 is overloaded, the electric valve 331 is opened, and the outside gas can flow into the inner cavity of the square cylinder 33 through the electric valve 331, and then the elastic element 335 will... It can be reset and extended, causing the inner slider 333 to slide forward. Then, through the transmission of the extension rod 336, the receiving block 32 and the support sleeve 31, it drives the second connector 28 to move forward, causing the protrusion 27 to withdraw from the inside of the groove 26. This realizes the function of disconnecting the transmission between the output shaft 11 and the driven component on the flange connecting shaft 292. The assembly block 337 is bolted to the receiving block 32, and the mounting block 34 is bolted to the support platform 21. With this design, the user can replace the damaged square tube 33 as a whole to extend the service life of the entire structure.

[0037] Working principle: During the production process of the square tube 33, the electric valve 331 is opened in advance, and then the input end of the air pump is connected to the electric valve 331 to control the air pump to extract the gas inside the square tube 33. At this time, the inner slider 333 will slide, compressing the elastic element 335. Then, the inner slider 333 is limited by the limit block 332. Subsequently, the electric valve 331 is closed to lock the position of the inner slider 333. Before using this structure, the end of the flange connecting shaft 292 needs to be fixedly installed on the driven part, and then the reducer body 1 is positioned and installed. The output shaft of the motor can be connected... Connected to the input shaft 12, it can provide power to the driven component. During use, the dynamic torque sensor 23 monitors the torque on the output shaft 11. After reaching the preset value, the controller body 24 controls the electric valve 331 to open. Then, the outside gas can pass through the electric valve 331 and flow into the inner cavity of the square tube 33. Subsequently, the elastic element 335 resets and extends, causing the inner slider 333 to slide forward. Then, through the transmission of the extension rod 336, the receiving block 32 and the support sleeve 31, the second connector 28 is driven to move forward, causing the protrusion 27 to withdraw from the inside of the groove 26, interrupting the transmission and achieving the effect of overload protection.

[0038] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A two-stage transmission worm gear reducer with overload protection, characterized in that, include: The reducer body (1) has an output shaft (11) on its front side and an input shaft (12) on its left side. Separating transmission mechanism (2), the separating transmission mechanism (2) is disposed on the reducer body (1) and the output shaft (11), the separating transmission mechanism (2) is used to make the output shaft (11) and the driven component detachably connected; Separation drive mechanism (3) is provided on separation transmission mechanism (2) and is used to drive separation transmission mechanism (2) to perform separation work.

2. The overload-resistant two-stage transmission worm gear reducer according to claim 1, characterized in that: The separation transmission mechanism (2) includes a support platform (21), which is fixedly installed on the front of the reducer body (1). A support leg (22) is fixedly installed on the top of the support platform (21). A dynamic torque sensor (23) is fixedly installed at the end of the support leg (22) away from the support platform (21). The dynamic torque sensor (23) is fixedly connected to the middle of the output shaft (11). A controller body (24) is fixedly installed on the top of the support platform (21).

3. The overload-resistant two-stage transmission worm gear reducer according to claim 2, characterized in that: The separation transmission mechanism (2) also includes a first connector (25), which is fixedly connected to the end of the output shaft (11). A groove (26) is provided on the side of the first connector (25) away from the output shaft (11). A protrusion (27) is movably inserted into the inner cavity of the groove (26). A second connector (28) is fixedly installed on the side of the protrusion (27) away from the first connector (25). A branch connecting rod (29) is fixedly installed on the side of the second connector (28) away from the protrusion (27).

4. The overload-resistant two-stage transmission worm gear reducer according to claim 3, characterized in that: A connecting plate (291) is slidably connected to the outer wall of the branch connecting rod (29), and a flange connecting shaft (292) is fixedly installed on the side of the connecting plate (291) away from the second connecting head (28).

5. The overload-resistant two-stage transmission worm gear reducer according to claim 3, characterized in that: The separation drive mechanism (3) includes a support sleeve (31) and a square tube (33). The support sleeve (31) is rotatably connected to the outer wall of the second connector (28). A receiving block (32) is fixedly installed at the bottom of the support sleeve (31). An installation block (34) is fixedly installed on the outer wall of the square tube (33). The installation block (34) is detachably connected to the top of the support platform (21).

6. The overload-resistant two-stage transmission worm gear reducer according to claim 5, characterized in that: An electric valve (331) is fixedly connected to the top of the square tube (33). An elastic element (335) is fixedly installed on the back of the inner wall of the square tube (33). An inner slider (333) is fixedly connected to the front of the elastic element (335). A rubber sleeve (334) is fixedly sleeved on the outer wall of the inner slider (333). The outer wall of the rubber sleeve (334) is slidably connected to the inner wall of the square tube (33).

7. The overload-resistant two-stage transmission worm gear reducer according to claim 6, characterized in that: A limiting block (332) is fixedly installed on the inner wall of the square tube (33). The front of the limiting block (332) is movably connected to the back of the inner slider (333). An extension rod (336) is fixedly installed on the front of the inner slider (333). One end of the extension rod (336) away from the inner slider (333) extends to the front of the square tube (33) and is fixedly connected to an assembly block (337). The assembly block (337) is detachably connected to the back of the receiving block (32).

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