A reducer protection device

Abstract

The present invention discloses a reducer protection device, comprising a protection mechanism arranged at the connection of a transmission shaft, wherein the transmission shaft is connected to a driving unit and a reducer, wherein the protection mechanism comprises a first sleeve and a second sleeve, wherein the first sleeve and the second sleeve are respectively arranged at the ends of the protection mechanism, wherein a plurality of groups of limit pins are embedded in the interior of the second sleeve, wherein the outer end surface of the second sleeve is sleeved with a contact plate and a scale plate, wherein the contact plate and the scale plate are elastically connected through an elastic member, wherein the contact plate is engaged with the limit pin at one end away from the scale plate, wherein a limit groove matching the limit pin is provided on one side of the first sleeve, wherein the scale plate is threadedly engaged with the outer end surface of the second sleeve, and wherein both ends of the limit pin are arranged in an arc surface. With this structure, when a motor drives multiple reducers at the same time, a certain reducer is automatically disengaged due to excessive torque, and the normal operation of other reducers is not affected; and the phenomenon of damage to multiple reducers driven by the motor at the same time is well solved.

Description

Technical Field

[0001] The invention relates to the technical field of reducer protection equipment, and in particular to a reducer protection device. Background Art

[0002] A reducer is an independent component consisting of a gear drive, worm drive, or gear-worm drive enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine. It matches the speed and transmits torque between the prime mover and the working machine or actuator. It is widely used in modern machinery.

[0003] In the past, the existing motors that drive multiple reducers at the same time use diaphragm couplings to connect them. The diaphragm can only be concentric but not safely protected. When the torque of one of the reducers is too large, the diaphragm or the shaft will be directly broken, causing serious mechanical failure, which poses certain safety risks.

[0004] Therefore, it is necessary to provide a reducer protection device to solve the above technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide a reducer protection device to solve the above technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a reducer protection device, comprising a protection mechanism arranged at the connection of a transmission shaft, the transmission shaft is transmission-connected with a drive unit and a reducer, the protection mechanism comprises a first sleeve and a second sleeve, the first sleeve and the second sleeve are respectively arranged at the ends of the protection mechanism, a plurality of groups of limit pins are embedded in the interior of the second sleeve, a resistance plate and a scale plate are sleeved on the outer end surface of the second sleeve, the resistance plate and the scale plate are elastically connected by an elastic member, the resistance plate is abutted against the limit pin at one end away from the scale plate, a limit groove matched with the limit pin is provided on one side of the first sleeve, the scale plate is threadedly engaged with the outer end surface of the second sleeve, and both ends of the limit pin are arranged in arc surfaces.

[0007] Furthermore, the elastic member may specifically be a disc spring, and the disc springs may be stacked in multiple groups.

[0008] As a further solution of the present invention, a secondary protection mechanism is embedded in the interior of the second sleeve, and the secondary protection mechanism is used to decelerate the first sleeve after the protection mechanism is triggered.

[0009] As a further solution of the present invention, the secondary protection mechanism includes a reduction assembly and a plug-in slot, the plug-in slot is opened inside the second sleeve, the reduction assembly is elastically embedded inside the plug-in slot, and the reduction assembly is flush with the surface of the second sleeve.

[0010] Furthermore, the deceleration component is made of wear-resistant material.

[0011] As a further solution of the present invention, the deceleration assembly includes a plug-in plate, a snap-in protrusion, a friction ring and a check pin. The plug-in plate is elastically plugged into the inside of the plug-in groove, the friction ring is fixedly connected to one end of the plug-in plate, the snap-in protrusion is embedded in the outer end surface of the friction ring, the check pin is embedded in the inside of the plug-in plate, and the check pin extends to the outer surface of the plug-in plate.

[0012] Furthermore, the plug-in piece, the clamping protrusion and the friction ring are integrally formed and are all made of wear-resistant material.

[0013] As a further solution of the present invention, a driven plate is slidably connected to one end of the plug-in slot that is away from the plug-in sheet, a driving groove perpendicular to the plug-in slot is provided inside the second sleeve, a counterweight block is slidably connected to the inside of the driving groove, the driven plate extends to the inside of the driving groove, and the driven plate is provided with an inclined portion that fits closely with the counterweight block.

[0014] Furthermore, a protrusion that abuts against the driven plate is provided at the end of the plug-in slot, so that the driven plate can only slide inside the plug-in slot, and the counterweight block is made of high-density material.

[0015] As a further solution of the present invention, a slope block is provided at the bottom of the driving slide groove, and the slope block is fitted on the bottom of the counterweight block, and the slope block is fitted with the end of the limit pin rod.

[0016] Furthermore, the abutment disc is provided with an abutment protrusion, the second sleeve is provided with a abutment disc groove matched with the abutment protrusion, the inclined block partially extends to the interior of the abutment disc groove, and the second sleeve is provided with a first limiting sliding groove matched with the limiting pin rod.

[0017] As a further solution of the present invention, an elastic abutment plate that fits the end of the deceleration assembly is clamped inside the plug-in slot through a trigger mechanism, and the elastic abutment plate is elastically connected to the driven plate. The trigger mechanism triggers and releases the limit on the elastic abutment plate when the limit pin moves.

[0018] As a further solution of the present invention, the outer end surface of the limit pin is fixedly connected to the limit slider, the second sleeve is provided with a second limit slot matched with the limit slider, the trigger mechanism includes a plug-in plate, the plug-in plate is elastically connected to the inside of the elastic abutment plate, the plug-in plate extends through to the inside of the second limit slot, a plug-in rod is provided at one end of the limit slider, and the plug-in plate is provided with a slot matched with the plug-in rod.

[0019] Furthermore, the end of the plug rod has an inclined surface or an arc surface, and the second limiting sliding groove is connected to the first limiting sliding groove.

[0020] When the present invention is in use, in order to avoid the diaphragm coupling from being broken or the transmission shaft from being damaged due to excessive driving torque, a protection mechanism is provided. The protection mechanism is adapted by providing a limit pin and a limit groove. The second sleeve is generally installed at one end of the driving unit, and the first sleeve is installed at one end of the reducer. The stop plate and one side of the limit pin are elastically pressed together, so that the limit pin is engaged with the limit groove, so that the second sleeve can drive the first sleeve to rotate synchronously. When the torque of a certain reducer is too large, the limit pin will automatically disengage from the limit groove due to the arc surface at the end thereof, and will not affect the normal operation of other reducers, thereby protecting the driving unit and the protection mechanism, avoiding major accidents caused by the diaphragm coupling being broken or the transmission shaft being disconnected, and the device can also control the elasticity of the stop plate by rotating the dial, thereby controlling the clamping force of the limit pin and the limit groove, and is used to adapt to the reducer drive under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is an overall schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the protection mechanism structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the side end surface structure of the protection mechanism of the present invention;

[0025] Figure 4 is a schematic diagram of the first shaft sleeve structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the internal structure of the protection mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the disassembled structure of the protection mechanism of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the deceleration assembly of the present invention;

[0029] Figure 8 The present invention Figure 5 The enlarged structural diagram at A in the middle;

[0030] Fig. 9 The present invention Figure 5 The enlarged structural diagram at B in the middle;

[0031] Fig.10 The present invention Figure 5 The enlarged structural diagram at C in the middle;

[0032] Fig.11 It is a schematic diagram of the structure of the limiting convex rod of the present invention;

[0033] Fig.12 It is a schematic diagram of the elastic abutment plate structure of the present invention.

[0034] In the figure: 1. driving unit; 2. speed reducer; 3. protection mechanism; 4. transmission shaft; 5. first bushing; 6. limiting pin rod; 7. second bushing; 8. abutment plate; 9. dial; 10. elastic member; 11. limiting groove; 12. abutment protrusion; 13. secondary protection mechanism; 14. first limiting slide groove; 15. plug-in groove; 16. speed reducer assembly; 17. elastic abutment plate; 18. abutment plate groove; 19. second limiting slide groove; 20. plug-in sheet; 21. clamping protrusion; 22. friction ring; 23. check pin; 24. driving slide groove; 25. inclined portion; 26. counterweight block; 27. inclined block; 28. driven plate; 29. ​​plug-in plate; 30. limiting slider; 31. plug-in rod; 32. slot. DETAILED DESCRIPTION

[0035] Embodiment 1: Figure 1-4 As shown, a reducer protection device includes a protection mechanism 3 arranged at the connection of a transmission shaft 4, the transmission shaft 4 is transmission-connected with a drive unit 1 and a reducer 2, the protection mechanism 3 includes a first sleeve 5 and a second sleeve 7, the first sleeve 5 and the second sleeve 7 are respectively arranged at the ends of the protection mechanism 3, a plurality of groups of limit pins 6 are embedded in the interior of the second sleeve 7, a stop plate 8 and a scale plate 9 are sleeved on the outer end surface of the second sleeve 7, the stop plate 8 and the scale plate 9 are elastically connected by an elastic member 10, the end of the stop plate 8 facing away from the scale plate 9 is engaged with the limit pin 6, a limit groove 11 adapted to the limit pin 6 is provided on one side of the first sleeve 5, the scale plate 9 is threadedly engaged with the outer end surface of the second sleeve 7, and both ends of the limit pin 6 are arranged in arc surfaces.

[0036] Furthermore, the elastic member 10 can specifically adopt a disc spring, and multiple disc springs can be stacked. The number of elastic members can be increased individually to meet the requirements of multiple ranges of torque values. For example, 50 to 100 Nm can be achieved by increasing the number of elastic members to 100 to 200 Nm. Within a certain range, there is no need to replace the entire component, only the number of elastic members in each group needs to be replaced.

[0037] When in use, in order to avoid the diaphragm coupling from being broken or the transmission shaft from being damaged due to excessive driving torque, a protection mechanism 3 is provided. The protection mechanism 3 is adapted by providing a limit pin 6 and a limit groove 11. The second sleeve 7 is generally installed at one end of the driving unit 1, and the first sleeve 5 is installed at one end of the reducer 2. The stop plate 8 is elastically pressed with one side of the limit pin 6, so that the limit pin 6 is clamped into the limit groove 11, so that the second sleeve 7 can drive the first sleeve 5 to rotate synchronously. When the torque of a reducer 2 is too large, the limit pin 6 will automatically disengage from the limit groove 11 due to the arc surface at the end, which will not affect the normal operation of other reducers, thereby protecting the driving unit 1 and the protection mechanism 3, avoiding major accidents caused by the rupture of the diaphragm coupling or the disconnection of the transmission shaft 4, and the device can also control the elasticity of the stop plate 8 by rotating the dial 9, thereby controlling the clamping force of the limit pin 6 and the limit groove 11, which is used to adapt to the reducer drive under different working conditions.

[0038] Embodiment 2: Based on embodiment 1, Figure 1-6 As shown, a secondary protection mechanism 13 is embedded in the interior of the second sleeve 7 , and the secondary protection mechanism 13 is used to decelerate the first sleeve 5 after the protection mechanism 3 is triggered.

[0039] like Figure 1-6 As shown, the secondary protection mechanism 13 includes a reduction assembly 16 and a plug-in slot 15 . The plug-in slot 15 is opened inside the second sleeve 7 . The reduction assembly 16 is elastically embedded inside the plug-in slot 15 , and the reduction assembly 16 is flush with the surface of the second sleeve 7 .

[0040] Furthermore, the deceleration assembly 16 is made of wear-resistant material.

[0041] During use, when the torque of the reducer 2 is too large and the limit pin 6 is disconnected from the limit groove 11, the reducer 2 is in a high-speed rotation state, which is dangerous. In the rotation state, there is sliding friction between the limit pin 6 and the limit groove 11, which makes it difficult for it to automatically reset and return to the driving state. Therefore, a secondary protection mechanism 13 is provided. The secondary protection mechanism 13 is provided with a reduction assembly 16 embedded in the plug-in slot 15. When the limit pin 6 is disconnected from the limit groove 11, if the drive unit 1 stops suddenly, it will cause movement damage to all reducers 2. Then, when the limit pin 6 is disconnected from the limit groove 11, the drive unit 1 slowly decelerates to stop, but the first sleeve 5 is still in an out-of-control state at this time. The reduction assembly 16 will extend from the inside of the plug-in slot 15 and fit with the end face of the first sleeve 5 under the action of elastic force. Through the fit of the reduction assembly 16 and with the help of the driving force of the drive unit 1, the first sleeve 5 is slowly stopped under the friction of the reduction assembly 16, thereby reducing the impact of sudden disconnection of the drive on the drive unit 1 and the reducer 2.

[0042] like Figure 1-8As shown, the deceleration assembly 16 includes a plug-in plate 20, a snap-in protrusion 21, a friction ring 22 and a check pin 23. The plug-in plate 20 is elastically plugged into the inside of the plug-in groove 15, the friction ring 22 is fixedly connected to one end of the plug-in plate 20, the snap-in protrusion 21 is embedded in the outer end surface of the friction ring 22, the check pin 23 is embedded in the inside of the plug-in plate 20, and the check pin 23 extends to the outer surface of the plug-in plate 20.

[0043] Furthermore, the plug-in piece 20, the clamping protrusion 21 and the friction ring 22 are integrally formed and are all made of wear-resistant material.

[0044] During use, when the limit pin 6 is disconnected from the limit groove 11, the plug-in piece 20 drives the friction ring 22 to extend out of the plug-in groove 15 elastically. The friction ring 22 is annular and effectively increases the contact area with the first shaft sleeve 5, thereby improving the deceleration effect of the friction ring 22 on the first shaft sleeve 5, and the friction ring 22 is integrally formed with the plug-in piece 20. The friction ring 22 and the second shaft sleeve 7 are rotated synchronously through the pin connection of the plug-in piece 20. Since the drive unit 1 is in a deceleration state, the friction ring 22 is driven to decelerate the first shaft sleeve 5. At the same time, a check pin 23 is provided on the outer end surface of the plug-in piece 20. When the plug-in piece 20 extends out of the plug-in groove 15, a check pin 23 is provided to avoid insufficient braking force caused by the backward movement of the plug-in piece 20. The check pin 23 is extended when the plug-in piece 20 is extended. When the second sleeve 7 is in motion, the check pin 23 extends from the inside of the connector 20 under the centrifugal force of the rotation of the second sleeve 7. When the connector 20 moves backward, the extended check pin 23 will abut against the end face of the second sleeve 7, effectively avoiding the reduction of the braking force caused by the backward movement of the connector 20. At the same time, a clamping protrusion 21 is provided on the outer end face of the friction ring 22, and the reduction assembly 16 is clamped to the inner wall of the connector groove 15 through the clamping protrusion 21. By setting the clamping protrusion 21 on the outer end face of the friction ring 22, the clamping protrusion 21 will also be damaged by friction when the friction ring 22 brakes, thereby avoiding the reuse of the connector 20. After each failure, the reduction assembly 16 needs to be replaced and the load torque of the reducer 2 needs to be checked, thereby further improving the safety of the device.

[0045] like Figure 1-9 As shown, a driven plate 28 is slidably connected to one end of the plug-in slot 15 away from the plug-in sheet 20, a driving slot 24 perpendicular to the plug-in slot 15 is provided inside the second sleeve 7, a counterweight 26 is slidably connected to the driving slot 24, the driven plate 28 extends to the inside of the driving slot 24, and the driven plate 28 is provided with an inclined portion 25 adapted to fit the counterweight 26.

[0046] Furthermore, a protrusion that abuts against the driven plate 28 is provided at the end of the plug-in slot 15 , so that the driven plate 28 can only slide inside the plug-in slot 15 , and the counterweight block 26 is made of a high-density material.

[0047] When in use, the plug-in piece 20 is elastically connected to the driven plate 28 through elastic parts such as springs. When the plug-in piece 20 slides out of the plug-in slot 15, a counterweight block 26 is provided to increase the elastic pressure on the plug-in piece 20. The counterweight block 26 moves inside the driving slot 24 under the centrifugal force of the rotation of the second shaft sleeve 7, and the counterweight block 26 and the driven plate 28 are fitted together through the inclined portion 25, so that the counterweight block 26 drives the driven plate 28 to move laterally when sliding, thereby compressing the elastic parts between the driven plate 28 and the plug-in piece 20, thereby pressurizing the plug-in piece 20 to further improve the braking effect of the friction ring 22, and the displacement of the counterweight block 26 is affected by the rotation speed of the second shaft sleeve 7. The higher the rotation speed, the better the effect of improving the braking force of the friction ring 22, so that the reducer 2 can be slowly decelerated under the braking of the friction ring 22.

[0048] like Figure 1-9 As shown, a slope block 27 is provided at the bottom of the driving slide groove 24 , and the slope block 27 is fitted on the bottom of the counterweight block 26 , and the slope block 27 is fitted with the end of the limit pin rod 6 .

[0049] Furthermore, the abutment plate 8 is provided with an abutment protrusion 12, the second sleeve 7 is provided with abutment plate groove 18 adapted to the abutment protrusion 12, the inclined block 27 partially extends to the inside of the abutment plate groove 18, and the second sleeve 7 is provided with a first limiting slide groove 14 adapted to the limiting pin 6.

[0050] When in use, in order to improve the pressing effect of the counterweight block 26 on the driven plate 28, a ramp block 27 is also provided, and the ramp block 27 is in contact with the arc-shaped end portion of the limit pin 6. When the limit pin 6 is disconnected from the limit groove 11, the limit pin 6 will move backward inside the first limit slide groove 14 and abut against the ramp block 27, so that the ramp block 27 drives the counterweight block 26 to move upward inside the driving slide groove 24, and the braking force effect of the friction ring 22 on the first sleeve 5 is further improved through the displacement of the limit pin 6.

[0051] like Figure 1-5 As shown, an elastic abutment plate 17 that fits the end of the deceleration assembly 16 is clamped inside the plug-in slot 15 through a trigger mechanism. The elastic abutment plate 17 is elastically connected to the driven plate 28. The trigger mechanism triggers and releases the limit on the elastic abutment plate 17 when the limit pin rod 6 moves.

[0052] During use, when the limit pin rod 6 moves, the limit pin rod 6 disengages from the limit groove 11, and the trigger mechanism is triggered to release the limit on the elastic support plate 17, so that the elastic support plate 17, under the action of the elastic force between it and the driven plate 28, quickly pushes the deceleration assembly 16 to pop out and brake the first sleeve 5. The elastic support plate 17 can pre-store energy for the pop-up of the deceleration assembly 16, and by selecting a suitable elastic member, the deceleration assembly 16 can achieve a good braking effect after the trigger mechanism is contacted.

[0053] Embodiment 3: Based on Embodiments 1 and 2, Figure 1-12 As shown, the outer end surface of the limit pin rod 6 is fixedly connected to the limit slider 30, the second sleeve 7 is provided with a second limit slide groove 19 adapted to the limit slider 30, the trigger mechanism includes a plug-in plate 29, the plug-in plate 29 is elastically connected to the inside of the elastic abutment plate 17, the plug-in plate 29 extends through and extends to the inside of the second limit slide groove 19, one end of the limit slider 30 is provided with a plug-in rod 31, and the plug-in plate 29 is provided with a slot 32 adapted to the plug-in rod 31.

[0054] Furthermore, the end of the plug rod 31 is an inclined surface or an arc surface, and the second limiting sliding groove 19 is connected to the first limiting sliding groove 14.

[0055] When in use, in order to prevent the limit pin rod 6 from rotating inside the first limit slide groove 14, a limit slider 30 is provided. The limit slider 30 is engaged with the second limit slide groove 19 to prevent the limit pin rod 6 from rotating. At the same time, a plug-in plate 29 is provided inside the elastic support plate 17, and the plug-in plate 29 is provided with a slot 32 adapted to the plug-in rod 31. The plug-in rod 31 is pinned with the slot 32, so that the plug-in plate 29 cannot be retracted into the elastic support plate 17, so that the elastic support plate 17 cannot slide in the plug-in slot 15. When the limit pin rod 6 moves backward, the plug-in rod 31 is disengaged from the slot 32, so that the plug-in plate 29 is retracted into the elastic support plate 17, so that the deceleration assembly 16 pops out for braking. At the same time, the plug-in plate 29 can select different driving modes according to the type of device. If When the drive unit 1 is driven at high speed and low torque, the elastic force between the plug-in plate 29 and the elastic abutment plate 17 is a repulsive force. During installation, the plug-in plate 29 extends into the second limiting slide groove 19 under the action of the elastic force, and then the limiting pin rod 6 is pushed to pin the plug-in plate 29. When the drive unit 1 rotates at high speed, the limiting pin rod 6 moves backward, and the plug-in plate 29 can be retracted into the elastic abutment plate 17 under the action of centrifugal force to complete the triggering. If the drive unit 1 is driven at high torque and low speed, there is a tensile force between the plug-in plate 29 and the elastic abutment plate 17. During installation, the plug-in plate 29 is pressed into the second limiting slide groove 19 through the through groove pre-opened in the second shaft sleeve 7, and the slot 32 is pinned to the plug-in rod 31. When the limiting pin rod 6 moves backward, the plug-in plate 29 can be retracted to the elastic abutment plate 17 under the action of the elastic force to complete the triggering.

[0056] Working principle: Before use, compress the elastic plate 17 in the plug-in slot 15 until the trigger mechanism is in a standby state, that is, the plug-in plate 29 extends into the second limiting slot 19, and the plug-in rod 31 is inserted into the slot 32 by pressing the limiting pin 6 to limit the plug-in plate 29 and store energy for the elastic plate 17. Then, push the deceleration assembly 16 into the plug-in slot 15, and the engaging protrusion 21 at the side end of the friction ring 22 can prevent the deceleration assembly 16 from detaching. Engage the limiting pin 6 with the limiting groove 11, and finally rotate the dial 9 to the preset elastic force threshold to complete the installation of the device. In order to avoid excessive driving torque causing the diaphragm coupling to break or the transmission shaft to be damaged, a protective mechanism 3 is provided. The protective mechanism 3 is provided with a limiting pin 6 and The limiting groove 11 is adapted, the second sleeve 7 is generally installed at one end of the drive unit 1, and the first sleeve 5 is installed at one end of the reducer 2. The stop plate 8 is elastically pressed with one side of the limit pin 6, so that the limit pin 6 is inserted into the limiting groove 11, so that the second sleeve 7 can drive the first sleeve 5 to rotate synchronously. When the torque of a reducer 2 is too large, the limit pin 6 will automatically disengage from the limiting groove 11 due to the arc surface setting at the end, which will not affect the normal operation of other reducers, thereby protecting the drive unit 1 and the protection mechanism 3, avoiding major accidents caused by the rupture of the diaphragm coupling or the disconnection of the transmission shaft 4, and the device can also control the elasticity of the stop plate 8 by rotating the dial 9, thereby controlling the card and strength of the limit pin 6 and the limiting groove 11. , which is used to adapt to the reducer drive under different working conditions. When the torque of the reducer 2 is too large, the limit pin 6 is disconnected from the limit groove 11. At this time, the reducer 2 is in a high-speed rotation state, which is dangerous. In the rotating state, there is sliding friction between the limit pin 6 and the limit groove 11, and it is difficult for it to automatically reset and return to the driving state. Therefore, a secondary protection mechanism 13 is provided. The secondary protection mechanism 13 is provided with a reduction assembly 16 embedded in the plug-in groove 15. When the limit pin 6 is disconnected from the limit groove 11, if the drive unit 1 stops suddenly at this time, it will cause movement damage to all reducers 2. Then, when the limit pin 6 is disconnected from the limit groove 11, the drive unit 1 slowly decelerates to a stop, but at this time the first sleeve 5 is still in an out-of-control state, and the reduction assembly 16 will be disconnected from the plug-in groove 15 extends out from the inside and fits with the end face of the first sleeve 5 under the action of elastic force. Through the fit of the reduction assembly 16 and with the help of the driving force of the drive unit 1, the first sleeve 5 is slowly stopped under the friction force of the reduction assembly 16, thereby reducing the impact of sudden disconnection of the drive on the drive unit 1 and the reducer 2. When the limit pin 6 is disconnected from the limit groove 11, the plug-in sheet 20 drives the friction ring 22 to elastically extend from the inside of the plug-in groove 15. The friction ring 22 is annular and effectively increases the contact area with the first sleeve 5, thereby improving the deceleration effect of the friction ring 22 on the first sleeve 5. The friction ring 22 is integrally formed with the plug-in sheet 20. The friction ring 22 and the second sleeve 7 are rotated synchronously through the pin connection of the plug-in sheet 20. Since the drive unit 1 is in a deceleration state,Thereby, the friction ring 22 is driven to decelerate the first sleeve 5. At the same time, a check pin 23 is provided on the outer end face of the plug-in piece 20. When the plug-in piece 20 extends out of the plug-in slot 15, a check pin 23 is provided to avoid insufficient braking force caused by the backward movement of the plug-in piece 20. When the plug-in piece 20 is extended, the check pin 23 is extended from the inside of the plug-in piece 20 under the action of the centrifugal force of the rotation of the second sleeve 7. When the plug-in piece 20 moves backward, the extended check pin 23 will abut against the end face of the second sleeve 7, effectively avoiding the reduction of braking force caused by the backward movement of the plug-in piece 20. At the same time, a clamping protrusion 21 is provided on the outer end face of the friction ring 22. The deceleration assembly 16 is clamped to the inner wall of the plug-in slot 15 through the clamping protrusion 21. By setting the clamping protrusion 21 on the outer end face of the friction ring 22 When the friction ring 22 brakes, the engaging protrusion 21 will also be damaged by friction, thereby avoiding the reuse of the plug-in piece 20, so that the reduction assembly 16 needs to be replaced and the load torque of the reducer 2 needs to be checked after each failure, further improving the safety of the device. The plug-in piece 20 is elastically connected to the driven plate 28 through elastic parts such as springs. When the plug-in piece 20 slides out of the plug-in slot 15, in order to increase the elastic pressure on the plug-in piece 20, a counterweight block 26 is provided. The counterweight block 26 moves inside the driving slide slot 24 under the centrifugal force of the rotation of the second shaft sleeve 7, and the counterweight block 26 and the driven plate 28 are fitted through the inclined portion 25, so that the counterweight block 26 drives the driven plate 28 to move laterally when sliding, thereby compressing the driven plate 28 and the plug-in piece. The elastic member between the plates 20 is used to pressurize the plug-in plate 20 to further improve the braking effect of the friction ring 22, and the displacement of the counterweight block 26 is affected by the rotation speed of the second shaft sleeve 7. The higher the rotation speed, the better the braking effect on the friction ring 22, so that the reducer 2 can be slowly decelerated under the braking of the friction ring 22. In order to improve the pressing effect of the counterweight block 26 on the driven plate 28, a ramp block 27 is also provided. The ramp block 27 is partially fitted with the arc-shaped end of the limit pin rod 6. When the limit pin rod 6 is disconnected from the limit groove 11, the limit pin rod 6 will move backward inside the first limit slide groove 14 and abut against the ramp block 27, so that the ramp block 27 drives the counterweight block 26 to move upward inside the driving slide groove 24, and the friction ring 2 is further improved through the displacement of the limit pin rod 6. 2 has a braking effect on the first sleeve 5. When the limit pin 6 moves, the limit pin 6 is disengaged from the limit groove 11. At this time, the trigger mechanism triggers to release the limit on the elastic push plate 17, so that the elastic push plate 17 quickly pushes the deceleration component 16 to pop out under the gradual elastic force of the driven plate 28 to brake the first sleeve 5. The elastic push plate 17 can be used to store energy in advance for the pop-up of the deceleration component 16. By selecting a suitable elastic member, the deceleration component 16 can achieve a good braking effect after the trigger mechanism contacts. In order to prevent the limit pin 6 from rotating inside the first limit slide groove 14, a limit slider 30 is provided. The limit slider 30 is engaged with the second limit slide groove 19 to prevent the limit pin 6 from rotating. At the same time, a plug-in plate 29 is provided inside the elastic push plate 17.The plug-in board 29 is provided with a slot 32 adapted to the plug-in rod 31. The plug-in rod 31 is pinned to the slot 32, so that the plug-in board 29 cannot be retracted into the elastic plate 17, so that the elastic plate 17 cannot slide in the plug-in slot 15. When the limit pin 6 moves backward, the plug-in rod 31 is disengaged from the slot 32, so that the plug-in board 29 is retracted into the elastic plate 17, so that the deceleration assembly 16 pops out for braking. At the same time, the plug-in board 29 can select different driving modes according to the type of device. If the drive unit 1 is a high-speed and low-torque drive, the elastic force between the plug-in board 29 and the elastic plate 17 is a repulsive force. When installed, the plug-in board 29 is under the action of the elastic force. The plug-in plate 29 can be pinned by pushing the limit pin 6 after extending it into the second limit slot 19. When the drive unit 1 rotates at high speed, the limit pin 6 moves backward, and the plug-in plate 29 can be retracted into the elastic plate 17 under the action of centrifugal force to complete the triggering. If the drive unit 1 is driven at high torque and low speed, there is tension between the plug-in plate 29 and the elastic plate 17. During installation, the plug-in plate 29 is pressed into the second limit slot 19 through the through groove pre-opened in the second sleeve 7, and the slot 32 is pinned to the plug-in rod 31. When the limit pin 6 moves backward, the plug-in plate 29 can be retracted to the elastic plate 17 under the action of elastic force to complete the triggering.

Claims

1. A reducer protection device, characterized in that: The gear train is a gear train that is mounted on a plurality of transmission elements, the gear train being arranged on a plurality of opposite ends of the gear train and the gear train being arranged on a plurality of opposite ends of the gear train. The cam is an angular channel formed between a pair of camshafts and a pair of camshafts, and the camshafts are connected to a pair of camshafts which are parallel to the first and second surfaces of the camshaft.

2. A reducer protection device according to claim 1, characterized in that: An inclined surface block is provided at the bottom of the driving slide groove, and the inclined surface block is fitted on the bottom of the counterweight block, and the inclined surface block is fitted with the end of the limit pin rod.

3. A reducer protection device according to claim 1, characterized in that: The outer end surface of the limit pin is fixedly connected to the limit slider, the second sleeve is provided with a second limit slot that is compatible with the limit slider, the trigger mechanism includes a plug-in plate, the plug-in plate is elastically connected to the inside of the elastic abutment plate, the plug-in plate extends through and extends to the inside of the second limit slot, a plug-in rod is provided at one end of the limit slider, and the plug-in plate is provided with a slot that is compatible with the plug-in rod.

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