Planetary gear reduction motor detection device and method

Abstract

The invention discloses a planetary gear speed reduction motor detection device and method, and belongs to the technical field of speed reducer detection. Comprising a speed reducer and a detection device, the speed reducer comprises a first machine body, a second machine body, an output shaft fixed to the first machine body and rotationally arranged on the first machine body, and an input shaft rotationally arranged on the second machine body, and the input shaft is in power connection with the output shaft; the fixed flange can be fixedly connected with the first machine body. By adjusting the position of the adjusting ring, the position of the spline shaft can be changed according to different types of speed reducers, so that the spline shaft can be matched with the speed reducers with different shaft lengths, and the adaptation capability of the detection device is improved.

Description

Technical Field

[0001] The present invention relates to a planetary gear reduction motor detection device and method, belonging to the technical field of reduction gear detection. Background Art

[0002] A reduction gear is an independent component composed of gear transmission, worm transmission, and gear-worm transmission enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between the prime mover and the working machine, playing a role in matching the rotational speed and transmitting torque between the prime mover and the working machine or the actuator, and is widely used in modern machinery.

[0003] Conventional reduction gears need to be used in combination with motors to form reduction motors. Conventional detection of reduction motors includes torque detection, leakage detection, noise detection, etc. After the reduction motor is installed and fixed by conventional detection equipment, the torque detector cannot be adapted and adjusted for reduction motors with different shaft lengths, so the adaptation ability is poor. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to provide a planetary gear reduction motor detection device and method, which solves the problem that after the reduction motor is installed and fixed by conventional detection equipment in the prior art, the torque detector cannot be adapted and adjusted for reduction motors with different shaft lengths, so the adaptation ability is poor.

[0005] The technical problem to be solved by the present invention is achieved by the following technical solutions: A planetary gear reduction motor detection device includes a reduction gear and a detection device. The reduction gear includes: A first body, A second body, fixed to the first body, An output shaft, rotatably arranged on the first body, An input shaft, rotatably arranged on the second body, and the input shaft is power-connected to the output shaft, The detection device includes: A detection box, with a hollow structure inside. A fixed flange is fixedly installed inside the detection box, and the fixed flange can be fixedly connected to the first body, A connecting shaft, rotatably arranged on the inner wall of the detection box, and one end of the connecting shaft extends outside the detection box, An adjusting rod, slidably arranged on the detection box along the axial direction of the connecting shaft, An adjusting ring, fixedly arranged on the adjusting rod, A rotating ring, rotatably arranged inside the adjusting ring, A spline shaft, fixedly arranged inside the rotating ring. One end of the spline shaft is spline-connected to the output shaft, and the other end of the spline shaft is inserted into the connecting shaft and is spline-connected to the connecting shaft, A first electric push rod, fixedly arranged on the detection box, and the output end of the first electric push rod is connected to the adjusting rod, Among them, the connecting shaft, the adjusting ring, the rotating ring, the spline shaft and the output shaft are coaxially arranged. One end of the connecting shaft located outside the detection box is power-connected to a torque detector. A seal detection structure for detecting the sealing performance of the speed reducer is also arranged on the detection box.

[0006] By adopting the above technical solution, when detecting the speed reducer, the position of the adjusting rod is adjusted by starting the first electric push rod, so that the adjusting rod drives the adjusting ring to move, and then the spline shaft is spline-connected with the output shaft. Then, a motor is placed into the detection box, and the output shaft of the motor is power-connected to the input shaft. Then, the motor is started to drive the input shaft to rotate. Since the output shaft is power-connected to the input shaft, at this time, the input shaft drives the output shaft to rotate, and then drives the connecting shaft to rotate through the spline shaft. At this time, the torque detector can detect the torque output through the connecting shaft, achieving the purpose of detecting the torque of the speed reducer. By adjusting the position of the adjusting ring, the position of the spline shaft can be changed according to different types of speed reducers, so that the spline shaft can adapt to speed reducers with different shaft lengths, improving the adaptability of the detection device.

[0007] The present invention is further configured as follows: The seal detection structure includes a detection block sleeved at the joint of the second body and the first body. The detection block is connected to the second body through a bolt fastener. A test cavity is formed in the part of the detection block located at the joint of the first body and the second body. The test cavity surrounds the first body and the opening faces the joint of the first body and the second body. An expansion cavity extending along the circumferential direction of the first body is formed on the side of the detection block facing the first body. A rubber layer that closes the expansion cavity is fixedly arranged at the opening of the expansion cavity facing the first body. A fixing block is fixedly arranged on the side of the detection block away from the first body. An air pressure cavity is formed in the fixing block. A sealed sliding block is slidably arranged in the air pressure cavity. One end of the sealed sliding block extends outside the fixing block and is fixedly provided with a pulling block. The sealed sliding block is in sealing fit with the inner wall of the air pressure cavity. A communication pipeline is arranged in the detection block. The air pressure cavity on the side of the sealed sliding block facing the second body is communicated with the test cavity through the communication pipeline. The air pressure cavity on the side of the sealed sliding block away from the second body is communicated with the expansion cavity through the communication pipeline.

[0008] By adopting the above technical solution, pulling the drawing block to move away from the fixed block causes the drawing block to drive the airtight sliding block to move. At this time, the space on the side of the airtight sliding block close to the second body in the air pressure chamber becomes larger and the air pressure decreases. Since the test chamber is connected to the air pressure chamber, the air pressure in the test chamber decreases at this time, making the external air pressure at the connection between the first body and the second body less than the internal air pressure. And because the first air guiding annular channel is connected to the side of the airtight sliding block away from the second body, the space on the side of the first air guiding annular channel away from the second body of the airtight sliding block becomes smaller and the air pressure increases at this time, causing the air pressure in the expansion chamber to increase. After the rubber layer expands, it tightly abuts against the surface of the first body, improving the sealing performance of the test chamber, preventing the test chamber from communicating with the external environment of the detection block, and improving the detection stability. Then, during the torque detection of the reducer, the sealing performance of the reducer can be synchronously detected. At this time, the reducer is in a full-load working condition, and the inside of the first body and the second body is in a high-temperature and high-pressure state, further increasing the pressure difference between the inside and outside of the connection between the first body and the second body. This is beneficial to detecting the sealing performance of the reducer under extreme working conditions, improving the detection quality and also increasing the diversity of the working conditions that the detection equipment can detect.

[0009] The present invention is further configured as: The communication pipeline includes: The first air guiding annular channel, which is arranged around the outside of the expansion chamber and is connected to the expansion chamber. The second air guiding annular channel, which is arranged around the outside of the test chamber. The second air guiding annular channel is connected to the test chamber through a plurality of through holes, and the plurality of through holes are arranged in an equiangular circular array along the circumference of the first body. The air guiding chamber, with two ends respectively connected to the air pressure chamber and the second air guiding annular channel. The air guiding hose, with two ends respectively connected to the air pressure chamber and the first air guiding annular channel.

[0010] The present invention is further configured as: A limit baffle for closing the through hole is fixedly arranged at the connection between the test chamber and the through hole. A plurality of air guiding hoses are arranged along the circumference of the first body, and the extending path of the air guiding hose passes through the limit baffle. A plurality of air guiding holes are perforated in the limit baffle.

[0011] By adopting the above technical solution, when the air pressure in the test chamber decreases while the air pressure in the expansion chamber increases, the air pressure in the air guide hose will also increase. After the air pressure in the air guide hose increases, it expands. After the air guide hose expands, it fills the inside of the limit baffle and closes the through hole. At this time, gas exchange cannot occur between the second air guide ring channel and the test chamber. When the speed reducer leaks oil, the oil overflows to the test chamber through the connection between the first body and the second body. The oil entering the test chamber will enter the inside of the limit baffle through the air guide hole, and then overflow to the second air guide ring channel through the through hole, and finally enter the air pressure chamber through the air guide chamber. This will cause pollution and damage to the detection device. Therefore, by closing the through hole after the air guide hose expands, the overflowing oil can only be stored in the test chamber, avoiding pollution of the detection device and improving the use safety of the detection device.

[0012] The present invention is further arranged as follows: A number of closed blocks are arranged in the test chamber, and the number of closed blocks is arranged in a circumferential array along the first body. The closed blocks extend towards the connection between the first body and the second body. A connection piece extending radially along the first body is fixedly arranged on the closed blocks. The end of the connection piece away from the closed block extends outside the detection block. The connection piece is slidably connected to the detection block and the connection part is sealed. The material of the detection block is a transparent material.

[0013] The present invention is further arranged as follows: A pressing plate is arranged outside the detection block. The pressing plate is slidably connected to the end of the connection piece. A threaded rod is threadedly connected to the pressing plate. The end of the threaded rod is rotatably connected to the outer side surface of the detection block.

[0014] By adopting the above technical solution, the operator can directly observe the oil leakage situation at the connection between the first body and the second body through the detection block. When there is a leak point at a single place at the connection between the first body and the second body, the operator can press the connection piece closest to the leak point to make the connection piece push the closed block towards the connection between the first body and the second body. When the closed block abuts against the connection between the first body and the second body, the leak point can be temporarily blocked to prevent further leakage at this leak point. At this time, other positions at the connection between the first body and the second body can be observed to detect whether there are other leak points, which is beneficial to improving the detection ability for multiple leak points at the connection between the first body and the second body.

[0015] The present invention is further arranged as follows: A connecting rod is fixedly arranged outside the pulling block. The end of the connecting rod is slidably connected to the detection box and the sliding direction is along the axial direction of the connecting shaft. A second electric push rod is fixedly arranged on the detection box. The output end of the second electric push rod is connected to the connecting rod.

[0016] The present invention is further arranged as follows: Threaded holes that are aligned with each other are opened on the pulling block and the fixed block. A support column is threadedly connected in the threaded holes. The support column can be threadedly connected to the threaded holes on both the pulling block and the fixed block at the same time.

[0017] A detection method for a planetary gear reduction motor detection device, the detection method comprising: S1: Place the reduction gear in the interior of the detection box and fix it using a fixed flange; S2: Start the first electric push rod, adjust the position of the adjusting rod through the adjusting rod, so that the adjusting ring drives the rotating ring and the spline shaft to move axially along the connecting shaft, and finally the spline shaft is spline-connected to the output shaft; S3: Connect one end of the connecting shaft located outside the detection box to the torque detector; S4: Wait for the detection of the reduction gear.

[0018] The beneficial effects of the present invention are as follows: When detecting the reduction gear, by starting the first electric push rod to adjust the position of the adjusting rod, the adjusting rod drives the adjusting ring to move, thereby enabling the spline shaft to be spline-connected to the output shaft. Then, a motor is placed into the detection box, so that the output shaft of the motor is power-connected to the input shaft. Then, the motor is started, and the motor drives the input shaft to rotate. Since the output shaft and the input shaft are power-connected, at this time, the input shaft drives the output shaft to rotate, and further drives the connecting shaft to rotate through the spline shaft. At this time, the torque detector can detect the torque output through the connecting shaft, achieving the purpose of detecting the torque of the reduction gear. By adjusting the position of the adjusting ring, the position of the spline shaft can be changed according to the type of the reduction gear, enabling the spline shaft to adapt to reduction gears with different shaft lengths, and improving the adaptability of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the present invention after the output shaft and the spline shaft are spline-connected; Figure 3 is a structural sectional view of the present invention; Figure 4 is Figure 3 an enlarged structural view of part A in Figure 5 is Figure 4 a schematic structural diagram of the air guide hose after expansion in Figure 6 is a partial structural sectional view of the connection between the connecting piece and the closing block in the present invention; Figure 7 is a schematic structural diagram of the support column installed between the pulling block and the fixed block in the present invention.

[0020] In the figure: 10, detection box; 11, connecting shaft; 12, adjusting ring; 13, adjusting rod; 14, rotating ring; 15, spline shaft; 16, first electric push rod; 17, first body; 18, second body; 19, input shaft; 20, output shaft; 21, pulling block; 22, connecting rod; 23, second electric push rod; 24, fixing block; 25, detection block; 26, pressing plate; 27, connecting piece; 28, threaded rod; 29, fixing flange; 30, expansion cavity; 31, rubber layer; 32, first air guide ring channel; 33, air guide hose; 34, air pressure cavity; 35, air guide cavity; 36, second air guide ring channel; 37, test cavity; 38, limit baffle; 39, air guide hole; 40, sealed sliding block; 41, sealing block; 42, threaded hole; 43, support column; 44, fixing piece. Detailed implementation manner

[0021] In order to make it easy to understand the technical means, creative features, achieved purposes and effects of the present invention, the present invention will be further described below with reference to specific drawings.

[0022] As Figures 1 to 2 shown, a planetary gear reduction motor detection device includes a reduction gear and a detection device. The reduction gear includes a first body 17, a second body 18, an input shaft 19 and an output shaft 20. The first body 17 and the second body 18 are fixedly connected by bolt fasteners. The interiors of the first body 17 and the second body 18 are hollow structures and are provided with a gear set. The output shaft 20 is rotatably arranged on the first body 17, the input shaft 19 is rotatably arranged on the second body 18, one end of the input shaft 19 is power-connected to the gear set, the other end of the input shaft 19 is power-connected to an external drive motor, one end of the output shaft 20 is power-connected to the gear set, and the power input of the input shaft 19 transmits power to the output shaft 20 through the gear set for output. The detection device includes a detection box 10, a connecting shaft 11, an adjusting ring 12, an adjusting rod 13, a rotating ring 14 and a spline shaft 15. The interior of the detection box 10 is a hollow structure and is fixedly installed with a fixing flange 29. The fixing flange 29 can be fixedly connected to the first body 17 by bolt fasteners. The connecting shaft 11 is rotatably arranged on the inner wall of the detection box 10, one end of the connecting shaft 11 extends to the outside of the detection box 10, and a torque detector is power-connected to the end of the connecting shaft 11 located outside the detection box 10. A sealing detection structure for detecting the sealing performance of the reduction gear is also provided on the detection box 10.

[0023] As Figure 2As shown, the adjusting rod 13 is axially slidably arranged on the detection box 10 along the connecting shaft 11. The first electric push rod 16 is fixedly arranged inside or outside the detection box 10. The power output end of the first electric push rod 16 is connected to the adjusting rod 13. When the first electric push rod 16 is located inside the detection box 10, the adjusting rod 13 does not penetrate the detection box 10. When the first electric push rod 16 is located outside the detection box 10, the end of the adjusting rod 13 penetrates the detection box 10 and extends to the outside of the detection box 10. At this time, a first sliding groove is formed on the detection box 10 along the sliding direction of the adjusting rod 13. The adjusting ring 12 is fixedly arranged at one end of the adjusting rod 13 away from the first electric push rod 16. The rotating ring 14 is rotatably arranged inside the adjusting ring 12. The spline shaft 15 is fixedly arranged inside the rotating ring 14. One end of the spline shaft 15 can be spline-connected to the output shaft 20, and the other end of the spline shaft 15 is inserted into the connecting shaft 11 and is spline-connected to the connecting shaft 11. The first electric push rod 16 makes the output shaft 20 and the spline shaft 15 connected or disconnected by pushing the adjusting rod 13 to slide. The connecting shaft 11, the adjusting ring 12, the rotating ring 14, the spline shaft 15 and the output shaft 20 are coaxially arranged.

[0024] As Figures 2 to 4 shown, the seal detection structure includes a detection block 25 sleeved at the connection between the second body 18 and the first body 17. The detection block 25 is in close contact with the connection between the first body 17 and the second body 18 to prevent gas from passing through. On the side of the detection block 25 facing the second body 18 and the first body 17, a flexible sealing material such as rubber can be selectively used to improve the sealing performance of the detection block 25. A fixing piece 44 in contact with the end face of the second body 18 away from the first body 17 is fixedly arranged on the detection block 25. The fixing piece 44 and the second body 18 are connected by a bolt fastener. The connection holes for the bolt fastener on the fixing piece 44 and the second body 18 are arranged between the bolt connection holes of the second body 18 and the first body 17.

[0025] As Figure 2 and Figure 5As shown, a test cavity 37 is provided in a part of the detection block 25 at the connection of the first body 17 and the second body 18. The test cavity 37 is provided around the first body 17 and its opening faces the connection of the first body 17 and the second body 18. An expansion cavity 30 extending along the circumference of the first body 17 is provided on the side of the detection block 25 facing the first body 17. A rubber layer 31 that seals the expansion cavity 30 is fixedly provided at the opening of the expansion cavity 30 facing the first body 17. A fixing block 24 is fixedly provided on the side of the detection block 25 away from the first body 17. An air pressure cavity 34 is provided in the fixing block 24. A sealed sliding block 40 is slidably provided in the air pressure cavity 34. The sealed sliding block 40 slides along the axial direction of the connecting shaft 11. The sealed sliding block 40 fits and seals with the inner wall of the air pressure cavity 34. The sealed sliding block 40 divides the air pressure cavity 34 into two parts, one part close to the second body 18 and the other part away from the second body 18, and the gas between the two parts cannot flow. One end of the sealed sliding block 40 extends to the outside of the fixing block 24 away from the detection block 25 and is fixedly provided with a pulling block 21.

[0026] As Figure 2 , Figure 5 and Figure 7 shown, threaded holes 42 that are aligned with each other are provided on the pulling block 21 and the fixing block 24. Among them, the threaded hole 42 on the pulling block 21 penetrates through the pulling block 21, and the threaded hole 42 on the fixing block 24 does not penetrate through the fixing block 24. A support column 43 can be screwed into the threaded hole 42. The support column 43 can be threadedly connected to the threaded holes 42 on both the pulling block 21 and the fixing block 24 at the same time, so that the relative distance between the pulling block 21 and the fixing block 24 is fixed. A communication pipeline is provided in the detection block 25. The air pressure cavity 34 on the side of the sealed sliding block 40 facing the second body 18 is communicated with the test cavity 37 through the communication pipeline, and the air pressure cavity 34 on the side of the sealed sliding block 40 away from the second body 18 is communicated with the expansion cavity 30 through the communication pipeline.

[0027] As Figures 2 to 3 shown, a connecting rod 22 is fixedly provided on the outside of the pulling block 21. The end of the connecting rod 22 is slidably connected to the detection box 10, and the sliding direction is along the axial direction of the connecting shaft 11. A second electric push rod 23 is fixedly provided on the detection box 10. The output end of the second electric push rod 23 is connected to the connecting rod 22.

[0028] As Figures 4 to 5As shown in the figure, the connecting pipeline includes a first air guiding annular channel 32, an air guiding hose 33, an air guiding cavity 35, and a second air guiding annular channel 36. The first air guiding annular channel 32 is arranged around the outside of the expansion cavity 30, and the first air guiding annular channel 32 is communicated with the expansion cavity 30. The second air guiding annular channel 36 is arranged around the outside of the test cavity 37, and the second air guiding annular channel 36 is communicated with the test cavity 37 through a plurality of through holes. The plurality of through holes are arranged in an equiangular circular array along the circumference of the first body 17. Both ends of the air guiding cavity 35 are respectively communicated with the air pressure cavity 34 and the second air guiding annular channel 36, and both ends of the air guiding hose 33 are respectively communicated with the air pressure cavity 34 and the first air guiding annular channel 32. A limiting baffle 38 for closing the through hole is fixedly arranged at the connection part between the test cavity 37 and the through hole. A plurality of air guiding hoses 33 are arranged along the circumference of the first body 17. The extending path of the air guiding hose 33 passes through the limiting baffle 38. A plurality of air guiding holes 39 are formed through the limiting baffle 38. The force required for the air guiding hose 33 to expand is less than the force required for the rubber layer 31 to expand. When the air guiding hose 33 expands and is abutted and limited by the limiting baffle 38, the rubber layer 31 expands slightly.

[0029] As Figure 2 , Figure 5 and Figure 6 shown in the figure, a plurality of closing blocks 41 are arranged in the test cavity 37. The plurality of closing blocks 41 are arranged in a circular array along the circumference of the first body 17. The closing blocks 41 extend towards the connection part between the first body 17 and the second body 18, and the closing blocks 41 extend along the circumference of the detection block 25. When the ends of the plurality of closing blocks 41 abut against the connection part between the first body 17 and the second body 18, the adjacent closing blocks 41 abut against each other. A connecting piece 27 extending radially along the first body 17 is fixedly arranged on the closing block 41. The fixed position of the connecting piece 27 is preferably at both ends of the extension of the closing block 41. One end of the connecting piece 27 away from the closing block 41 extends outside the detection block 25. The connecting piece 27 is slidably connected with the detection block 25 and the connection part is sealed. The material of the detection block 25 is a transparent material. A pressing plate 26 is arranged outside the detection block 25. The pressing plate 26 is slidably connected with the end of the connecting piece 27. A threaded rod 28 is threadedly connected to the pressing plate 26. The end of the threaded rod 28 is rotatably connected with the outer side surface of the detection block 25. When the threaded rod 28 is rotated forward, under the action of the threaded structure, the pressing plate 26 moves towards the direction of the first body 17 and the second body 18. At this time, the pressing plate 26 presses the connecting piece 27 into the test cavity 37, and the connecting piece 27 slides relative to the pressing plate 26. Finally, the closing block 41 abuts against the connection part between the first body 17 and the second body 18. When the threaded rod 28 is rotated reversely, the pressing plate 26 moves towards the direction away from the first body 17 and the second body 18. At this time, the pressing plate 26 pulls out the connecting piece 27 from the test cavity 37, so that the closing block 41 is separated from the connection part between the first body 17 and the second body 18.

[0030] When detecting the speed reducer, the position of the adjusting rod 13 is adjusted by starting the first electric push rod 16, so that the adjusting rod 13 drives the adjusting ring 12 to move, and then the spline shaft 15 is spline-connected with the output shaft 20. Then, a motor is placed into the detection box 10, and the output shaft of the motor is power-connected to the input shaft 19. Then, the motor is started to drive the input shaft 19 to rotate. Since the output shaft 20 is power-connected to the input shaft 19, at this time, the input shaft 19 drives the output shaft 20 to rotate, and then drives the connecting shaft 11 to rotate through the spline shaft 15. At this time, the torque detector can detect the torque output through the connecting shaft 11, achieving the purpose of detecting the torque of the speed reducer. By adjusting the position of the adjusting ring 12, the position of the spline shaft 15 can be changed according to different types of speed reducers, so that the spline shaft 15 can adapt to speed reducers with different shaft lengths, improving the adaptability of the detection device. While detecting the torque of the speed reducer, the sealing performance of the speed reducer under full load can be synchronously detected through the sealing detection structure, which can further improve the detection efficiency of the speed reducer and can detect the sealing performance of the speed reducer under the actual full load condition, with higher detection accuracy.

[0031] By pulling the pulling block 21 to move away from the fixed block 24, the pulling block 21 drives the airtight sliding block 40 to move. At this time, the space on the side of the airtight sliding block 40 close to the second body 18 in the air pressure chamber 34 becomes larger and the air pressure decreases. Since the test chamber 37 is connected to the air pressure chamber 34, the air pressure in the test chamber 37 decreases at this time, making the external air pressure at the joint of the first body 17 and the second body 18 less than the internal air pressure. And since the first air guide ring channel 32 is connected to the side of the airtight sliding block 40 away from the second body 18, the space on the side of the first air guide ring channel 32 away from the second body 18 becomes smaller and the air pressure increases at this time, making the air pressure in the expansion chamber 30 increase, and the rubber layer 31 expands slightly. After expansion, it tightly abuts against the surface of the first body 17, enabling the rubber layer 31 to fill the depressions and other defects on the surface of the first body 17, improving the sealing performance of the test chamber 37, preventing the test chamber 37 from communicating with the external environment of the detection block 25, and improving the detection stability. Then, during the detection of the torque of the speed reducer, the sealing performance of the speed reducer can be synchronously detected. At this time, the speed reducer is under full load working conditions, and the inside of the first body 17 and the second body 18 is in a high-temperature and high-pressure state, making the pressure difference between the inside and outside of the joint of the first body 17 and the second body 18 further increase. This is beneficial to detecting the sealing performance of the speed reducer under extreme working conditions, improving the detection quality while also increasing the diversity of working conditions that the detection equipment can detect.

[0032] While the air pressure in the test chamber 37 decreases, the air pressure in the expansion chamber 30 increases. At this time, the air pressure in the air guide hose 33 also increases. After the air pressure in the air guide hose 33 increases, it expands. After the air guide hose 33 expands, it fills the inside of the limit baffle 38 and closes the through hole. At this time, no gas exchange can occur between the second air guide ring channel 36 and the test chamber 37. When the speed reducer leaks oil, the oil overflows into the test chamber 37 through the connection between the first body 17 and the second body 18. The oil entering the test chamber 37 will enter the inside of the limit baffle 38 through the air guide hole 39, and then overflow into the second air guide ring channel 36 through the through hole, and finally enter the air pressure chamber 34 through the air guide chamber 35. This will cause pollution and damage to the detection device. Therefore, after the air guide hose 33 expands, the through hole is closed, so that the overflowing oil can only be stored in the test chamber 37, avoiding pollution of the detection device and improving the use safety of the detection device.

[0033] When the speed reducer leaks oil and the detection block 25 needs to be disassembled, the operator installs the support column 43 between the fixed block 24 and the pulling block 21, aligns the end of the support column 43 with the threaded hole 42 on the pulling block 21, and then screws in the support column 43, so that the support column 43 is screwed into the threaded holes 42 on the pulling block 21 and the fixed block 24 in sequence, fixing the positions of the pulling block 21 and the fixed block 24 and enabling them to move synchronously, so that the air guide hose 33 can maintain the expanded state. Then, the bolt fastener between the fixing piece 44 fixed on the detection block 25 and the second body 18 is removed. Then, the second electric push rod 23 is started in the reverse direction, so that the pulling block 21 moves away from the second body 18. The support column 43 keeps the pulling block 21 and the fixed block 24 moving synchronously, and further enables the detection block 25 to move synchronously with the pulling block 21. At this time, the air guide hose 33 is still in a high-pressure state, the air guide hose 33 expands and closes the through hole. When the detection block 25 is completely separated from the second body 18, at this time, an external suction device is used to suck the oil in the test chamber 37 clean, and then the inner wall of the test chamber 37 is wiped clean with a cloth.

[0034] When the speed reducer does not leak oil and the detection block 25 needs to be disassembled, there is no need to install the support column 43 between the fixed block 24 and the pulling block 21. The bolt fastener between the fixing piece 44 fixed on the detection block 25 and the second body 18 is directly removed, and then the second electric push rod 23 is started in the reverse direction, so that the pulling block 21 moves away from the second body 18, and finally the detection block 25 is disconnected from the second body 18.

[0035] The operator can directly observe the oil leakage situation at the connection between the first body 17 and the second body 18 through the detection block 25. When there is a leakage point at a single place at the connection between the first body 17 and the second body 18, the operator can press the connecting piece 27 closest to the leakage point, so that the connecting piece 27 pushes the sealing block 41 towards the connection between the first body 17 and the second body 18. When the sealing block 41 abuts against the connection between the first body 17 and the second body 18, the leakage point can be temporarily blocked to prevent further leakage of the leakage point. At this time, other positions at the connection between the first body 17 and the second body 18 can be observed to detect whether there are other leakage points, which is beneficial to improving the detection ability of multiple leakage points of the first body 17 and the second body 18.

[0036] A detection method for a planetary gear reduction motor detection device, the detection method includes: S1: Place the speed reducer inside the detection box 10 and fix it using the fixed flange 29. At this time, the connecting shaft 11 and the output shaft 20 are on the same axis; S2: Start the first electric push rod 16, adjust the position of the adjusting ring 12 through the adjusting rod 13, so that the adjusting ring 12 drives the rotating ring 14 and the spline shaft 15 to move axially along the connecting shaft 11, and finally make the spline shaft 15 spline-connected with the output shaft 20; S3: Connect one end of the connecting shaft 11 outside the detection box 10 to the torque detector; S4: Wait for the detection of the speed reducer. Before the detection, power-connect the speed reducer to an external driving motor through a coupling and other connection structures; S5: Start the second electric push rod 23, so that the second electric push rod 23 pushes the connecting rod 22 to move, thereby making the connecting rod 22 push the fixed block 24 and the detection block 25 to move synchronously. Finally, make the detection block 25 sleeved on the connection between the first body 17 and the second body 18. At this time, a part of the detection block 25 and the fixed block 24 abut against the second body 18 and turn off the second electric push rod 23. Screw the bolt fastener into the connection hole between the detection block 25 and the second body 18 to complete the fixation of the detection block 25 and the second body 18; S6: Reverse-start the second electric push rod 23, so that the connecting rod 22 drives the sealed sliding block 40 to move away from the detection block 25 through the pulling block 21, making the inside of the test cavity 37 in a low-pressure state; S7: Start the external driving motor to perform torque detection and sealing detection on the speed reducer synchronously.

[0037] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A planetary gear reduction motor detection device, comprising a reduction gear and a detection device, characterized in that: The reduction gear includes: A first body (17), A second body (18), fixed to the first body (17), An output shaft (20), rotatably arranged on the first body (17), An input shaft (19), rotatably arranged on the second body (18), and the input shaft (19) is power-connected to the output shaft (20), The detection device includes: A detection box (10), with a hollow structure inside. A fixed flange (29) is fixedly installed inside the detection box (10), and the fixed flange (29) can be fixedly connected to the first body (17), A connecting shaft (11), rotatably arranged on the inner wall of the detection box (10), and one end of the connecting shaft (11) extends outside the detection box (10), An adjusting rod (13), slidably arranged on the detection box (10) along the axial direction of the connecting shaft (11), An adjusting ring (12), fixedly arranged on the adjusting rod (13), A rotating ring (14), rotatably arranged inside the adjusting ring (12), A spline shaft (15), fixedly arranged inside the rotating ring (14). One end of the spline shaft (15) is spline-connected to the output shaft (20), and the other end of the spline shaft (15) is inserted into the connecting shaft (11) and is spline-connected to the connecting shaft (11), A first electric push rod (16), fixedly arranged on the detection box (10), and the output end of the first electric push rod (16) is connected to the adjusting rod (13), Wherein, the connecting shaft (11), the adjusting ring (12), the rotating ring (14), the spline shaft (15) and the output shaft (20) are coaxially arranged. One end of the connecting shaft (11) located outside the detection box (10) is power-connected to a torque detector, and a seal detection structure for detecting the sealing performance of the reduction gear is also arranged on the detection box (10).

2. The planetary gear reduction motor detection device according to claim 1, wherein: The seal detection structure includes a detection block (25) sleeved at the connection of the second body (18) and the first body (17). The detection block (25) is connected to the second body (18) by a bolt fastener. A test cavity (37) is formed in the part of the detection block (25) located at the connection of the first body (17) and the second body (18). The test cavity (37) is formed around the first body (17) and the opening faces the connection of the first body (17) and the second body (18). An expansion cavity (30) extending along the circumferential direction of the first body (17) is formed on the side of the detection block (25) facing the first body (17). A rubber layer (31) for closing the expansion cavity (30) is fixedly arranged at the opening of the expansion cavity (30) facing the first body (17). A fixing block (24) is fixedly arranged on the side of the detection block (25) away from the first body (17). An air pressure cavity (34) is formed in the fixing block (24). A sealed sliding block (40) is slidably arranged in the air pressure cavity (34). One end of the sealed sliding block (40) extends outside the fixing block (24) and is fixedly provided with a pulling block (21). The sealed sliding block (40) is in sealing fit with the inner wall of the air pressure cavity (34). A communication pipeline is arranged in the detection block (25). The air pressure cavity (34) is communicated with the test cavity (37) through the communication pipeline on the side of the sealed sliding block (40) facing the second body (18), and the air pressure cavity (34) is communicated with the expansion cavity (30) through the communication pipeline on the side of the sealed sliding block (40) away from the second body (18).

3. A planetary gear reduction motor detection device according to claim 2, characterized in that: The communication pipeline includes: A first air guide ring channel (32) which is arranged around the outside of the expansion cavity (30), and the first air guide ring channel (32) is communicated with the expansion cavity (30). A second air guide ring channel (36) which is arranged around the outside of the test cavity (37), and the second air guide ring channel (36) is communicated with the test cavity (37) through a plurality of through holes. The plurality of through holes are arranged in an equiangular circumferential array along the circumferential direction of the first body (17). An air guide cavity (35) whose two ends are respectively communicated with the air pressure cavity (34) and the second air guide ring channel (36). An air guide hose (33) whose two ends are respectively communicated with the air pressure cavity (34) and the first air guide ring channel (32).

4. The planetary gear reduction motor detection device according to claim 3, characterized in that: A limit baffle (38) for closing the through hole is fixedly arranged at the connection of the test cavity (37) and the through hole. A plurality of air guide hoses (33) are arranged along the circumferential direction of the first body (17). The extending path of the air guide hose (33) passes through the limit baffle (38), and a plurality of air guide holes (39) are formed through the limit baffle (38).

5. The planetary gear reduction motor detection device according to claim 2, wherein: A plurality of closing blocks (41) are arranged in the test chamber (37). The plurality of closing blocks (41) are arranged in a circumferential array along the first body (17). The closing blocks (41) extend towards the connection between the first body (17) and the second body (18). A connecting piece (27) extending radially along the first body (17) is fixedly arranged on the closing block (41). One end of the connecting piece (27) away from the closing block (41) extends outside the detection block (25). The connecting piece (27) is slidably connected to the detection block (25) and the connection part is sealed. The material of the detection block (25) is a transparent material.

6. The planetary gear reduction motor detection device according to claim 5, characterized in that: A pressing plate (26) is arranged outside the detection block (25). The pressing plate (26) is slidably connected to the end of the connecting piece (27). A threaded rod (28) is threadedly connected to the pressing plate (26). The end of the threaded rod (28) is rotatably connected to the outer side surface of the detection block (25).

7. A planetary gear reduction motor detection device according to claim 2, characterized in that: A connecting rod (22) is fixedly arranged outside the pulling block (21). The end of the connecting rod (22) is slidably connected to the detection box (10) and the sliding direction is along the axial direction of the connecting shaft (11). A second electric push rod (23) is fixedly arranged on the detection box (10). The output end of the second electric push rod (23) is connected to the connecting rod (22).

8. The planetary gear reduction motor detection device according to claim 2, characterized in that: Threaded holes (42) which are aligned with each other are formed in the pulling block (21) and the fixed block (24). A support column (43) is threadedly connected in the threaded holes (42). The support column (43) can be threadedly connected to the threaded holes (42) on both the pulling block (21) and the fixed block (24) at the same time.

9. The detection method of a planetary gear reduction motor detection device according to any one of claims 1-8, characterized in that: The detection method includes: S1: Place the speed reducer inside the detection box (10) and fix it using the fixing flange (29); S2: Start the first electric push rod (16), adjust the position of the adjusting ring (12) through the adjusting rod (13), so that the adjusting ring (12) drives the rotating ring (14) and the spline shaft (15) to move axially along the connecting shaft (11), and finally make the spline shaft (15) spline-connected to the output shaft (20); S3: Connect one end of the connecting shaft (11) outside the detection box (10) to the torque detector; S4: Wait for the detection of the speed reducer.

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