Multi-specification double-lead speed reducer multifunctional testing device

Abstract

The present application relates to the technical field of speed reducer testing, and discloses a multifunctional testing device for multi-specification double-lead speed reducers. The present application comprises a liftable speed reducer mounting plate, wherein a speed reducer is placed on the speed reducer mounting plate, a motor is detachably fixedly installed on the speed reducer mounting plate, the output end of the motor is in transmission connection with the input end of the speed reducer, the output end of a magnetic powder brake is in transmission connection with a testing output shaft, two toothed plates are horizontally slidably connected to the speed reducer mounting plate, a rotating rod is rotatably connected to the speed reducer mounting plate and located between the two toothed plates, a gear one is fixedly sleeved on the rotating rod, and the gear one is in meshing connection with the two toothed plates. Even if the speed reducer is damaged inside under an overload condition, no large displacement or ejection will occur, the safety of surrounding personnel is prevented from being threatened, the magnetic powder brake and the motor are protected, and the output shaft of the magnetic powder brake and the motor is prevented from being damaged due to impact.

Description

A multi-functional testing device for multi-specification dual-lead speed reducers Technical Field

[0001] This invention relates to the field of speed reducer testing technology, and in particular to a multifunctional testing device for multi-specification dual-lead speed reducers. Background Technology

[0002] A speed reducer test bench is a testing device for detecting the overall performance indicators of a speed reducer, including input torque, speed, power, output torque, speed, power, efficiency, temperature rise, vibration, and noise. During the test, the controller continuously increases the excitation current to the loader until the speed reducer power reaches the rated value. Due to the torque change, the input and output sensors generate two different signals, which are displayed by the matching measuring instrument as the input torque, speed, and power, as well as the output torque, speed, and power.

[0003] Current gearbox test racks involve placing the gearbox on a mounting platform and connecting the motor and brake to the output and input ends of the gearbox, respectively. However, the gearbox lacks a fixed mounting device, and tests frequently require measurements of data such as its maximum torque capacity. Therefore, when increasing the torque load, if the gearbox's internal gears become stuck or the shaft breaks, the gearbox will vibrate violently, even flying off, threatening the safety of nearby personnel. Furthermore, it can easily cause impacts to the motor and brake, and in severe cases, damage the gearbox test rack. Therefore, a multi-functional test device for multi-specification dual-lead gearboxes is proposed. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a multi-functional testing device for multi-specification dual-lead reducers.

[0005] This invention is achieved using the following technical solution: It includes a liftable reducer mounting plate, on which the reducer is placed. A motor is detachably and fixedly mounted on the reducer mounting plate, with the motor's output end connected to the reducer's input end. The output end of a magnetic powder brake is connected to a test output shaft. Two toothed plates are horizontally slidably connected to the reducer mounting plate. A rotating rod located between the two toothed plates is rotatably connected to the reducer mounting plate. A gear is fixedly sleeved on the rotating rod, meshing with both toothed plates simultaneously. Clamping plates are fixedly mounted on the top of the toothed plates. The two clamping plates are located on the same horizontal plane, on opposite sides of the reducer, and symmetrically distributed with respect to the reducer. A braking component matching the gear is movably connected to the reducer mounting plate, so that when the rotating rod is rotated, the gear drives the two toothed plates to move, causing the two clamping plates to simultaneously move closer to clamp the reducer or simultaneously move away from the reducer.

[0006] As a further improvement to the above solution, a test bench base is also included, on which a lifting mechanism is fixedly installed. Several slidable guide shafts inserted into the test bench base are fixedly installed at the bottom of the reducer mounting plate, so that when the lifting mechanism controls the lifting and lowering of the reducer mounting plate, the guide shafts guide the reducer mounting plate.

[0007] As a further improvement to the above solution, protrusions are fixedly installed on opposite sides of the two clamping plates. The protrusions are in contact with the front of the reducer, so that the magnetic powder brake pushes the reducer to contact the protrusions after being connected to the reducer in transmission.

[0008] As a further improvement to the above solution, a strip groove is provided on the side of the reducer mounting plate near the first gear. One end of the brake extends into the strip groove to achieve a sliding connection with the reducer mounting plate. An elastic element is fixedly installed in the strip groove, with one end abutting against the brake, so that the elastic element drives the brake to move towards the side near the first gear to fix the first gear.

[0009] As a further improvement to the above solution, a hook is rotatably connected to the side of the brake component away from the first gear, and a column is fixedly installed on the reducer mounting plate, so that after the brake component is pulled to separate from the first gear, the hook can be hooked onto the column to fix the brake component.

[0010] As a further improvement to the above solution, a rubber pad is fixedly installed on the side of the brake component near the first gear. The side of the rubber pad near the first gear is concave in an arc shape and the curvature is adapted to the first gear.

[0011] As a further improvement to the above solution, at least two slide rails are fixedly installed on the test bench base, and matching sliders are slidably installed on the slide rails. The magnetic powder brake is fixedly installed on several sliders, so that the magnetic powder brake can be more convenient and smooth when it is engaged or disengaged from the reducer.

[0012] As a further improvement to the above solution, a power-off protector and a sensor for detecting the torque of the magnetic powder brake are also included. The input terminal of the power-off protector is electrically connected to the sensor, and the output terminal is electrically connected to the power supply terminal of the motor, so that the power supply to the motor is disconnected when the test torque reaches the rated value set by the power-off protector.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] During testing, after connecting the reducer to the motor and the magnetic powder brake, the rotating rod drives the first gear to rotate, causing the two toothed plates meshing with the first gear to move the two clamping plates closer together and into contact with the two sides of the reducer to clamp them. Then, the brake is used to fix the first gear, preventing it from rotating and thus fixing the position of the two clamping plates.

[0015] This design prevents the reducer from shaking during testing. Even if the reducer is damaged under overload conditions, it will not cause significant displacement or ejection, thus avoiding threats to the safety of surrounding personnel. It also protects the magnetic powder brake and motor, preventing impact damage to their output shafts.

[0016] After the speed reducer is tested, the elastic element is compressed by pulling the hook, and the brake disengages from the gear. The hook is then rotated and hooked onto the column, which fixes the brake in a position separated from the gear. This allows the rotating rod to be rotated to move the two clamps away from each other and release the clamp on the speed reducer, so that a new speed reducer can be replaced. After the new speed reducer is placed and connected, it is clamped by rotating the rotating rod. The hook is then rotated to disengage from the column, and the elastic element restores its elasticity, which automatically pushes the brake to move back into contact with the gear and fix it in place, making it convenient to start a new round of testing.

[0017] This allows for easy adjustment of the position to align with the output shaft of the magnetic powder brake when testing gearboxes of different sizes. It also adds the function of adjusting the height of the magnetic powder brake, enabling this multi-functional testing device for various sizes of dual-lead gearboxes to be compatible with a wider range of gearboxes. For example, for larger gearboxes, if the output shaft of the magnetic powder brake is still lower than the output end of the gearbox even after adjusting the gearbox mounting plate to its lowest position, the height of the magnetic powder brake can be adjusted to align it, thus broadening the compatibility range. Attached Figure Description

[0018] Figure 1 is an overall view of the multi-functional testing device for a multi-specification dual-lead reducer according to the present invention;

[0019] Figure 2 is a schematic diagram of the front structure of the speed reducer mounting plate of the multi-functional testing device for a multi-specification dual-lead speed reducer according to the present invention.

[0020] Figure 3 is an enlarged view of point A in Figure 1 of the multi-functional testing device for a multi-specification dual-lead reducer according to the present invention;

[0021] Figure 4 is an enlarged view of section B in Figure 2 of the multi-functional testing device for a multi-specification dual-lead reducer according to the present invention.

[0022] Figure 5 is a schematic diagram of the U-shaped rod in the multifunctional testing device for a multi-specification dual-lead reducer of the present invention.

[0023] Explanation of key symbols:

[0024] 1. Magnetic powder brake; 2. Reducer; 3. Motor adapter Z-plate; 4. Test output shaft; 5. Motor; 6. Sensor mounting base; 7. Reducer mounting plate; 8. Test bench base; 9. Base plate; 10. Slide rail; 11. Slider; 12. Lifting mechanism; 13. Handwheel; 14. Guide shaft; 15. Bearing seat; 16. Gear plate; 17. Clamping plate; 18. Rotating rod; 19. Gear one; 20. Brake component; 21. Hook; 22. Strip groove; 23. Elastic component one; 24. Column; 25. U-shaped rod; 26. Support; 27. Round rod; 28. Gear two; 29. ​​Threaded seat; 30. Screw. Detailed Implementation

[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0026] Referring to Figures 1 to 5, a multifunctional testing device for a multi-specification dual-lead reducer includes a liftable reducer mounting plate 7. A reducer 2 is placed on the reducer mounting plate 7. A motor 5 is detachably and fixedly mounted on the reducer mounting plate 7. The output end of the motor 5 is connected to the input end of the reducer 2. The output end of the magnetic powder brake 1 is connected to the test output shaft 4. Two toothed plates 16 are slidably connected horizontally on the reducer mounting plate 7. A rotating rod 18 located between the two toothed plates 16 is rotatably connected to the reducer mounting plate 7. A gear 19 is fixedly sleeved on the rod 18. The gear 19 meshes with two toothed plates 16. A clamping plate 17 is fixedly installed on the top of the toothed plates 16. The two clamping plates 17 are located on the same horizontal plane and are located on opposite sides of the reducer 2 and are symmetrically distributed with the reducer 2 as the reference. A brake 20 matching the gear 19 is movably connected to the reducer mounting plate 7. This allows the two toothed plates 16 to move through the gear 19 when the rod 18 is rotated, so that the two clamping plates 17 move towards the reducer 2 or move away from the reducer 2 at the same time.

[0027] It also includes a test bench base 8, on which a lifting mechanism 12 and a bearing seat 15 are fixedly installed. A handwheel 13 passes through the bearing seat 15 and is connected to the input end of the lifting mechanism 12. The output end of the lifting mechanism 12 is fixedly connected to the reducer mounting plate 7. Several guide shafts 14 are fixedly installed at the bottom of the reducer mounting plate 7. The end of the guide shaft 14 away from the reducer mounting plate 7 is slidably inserted into the test bench base 8, so that when the lifting mechanism 12 controls the lifting of the reducer mounting plate 7, the guide shaft 14 guides the reducer mounting plate 7 and prevents the reducer mounting plate 7 from rotating or tipping over.

[0028] Each of the two clamping plates 17 has a protrusion fixedly installed on one side opposite to the other. The protrusion is in contact with the front of the reducer 2, so that after the magnetic powder brake 1 is connected to the reducer 2, it pushes the reducer 2 to contact the protrusion, thus improving the clamping effect.

[0029] A handle is fixedly installed at the end of the rotating rod 18 away from the reducer mounting plate 7, making it easier and more comfortable to operate the rotating rod 18.

[0030] Through the above technical solution, during testing, after the reducer 2 is placed on the reducer mounting plate 7 and the motor 5 and magnetic powder brake 1 are connected, the rotating rod 18 can be used to drive the gear 19 to rotate. This causes the two toothed plates 16 meshing with the gear 19 to drive the two clamping plates 17 to move closer together and contact the two sides of the reducer 2 to clamp it. Then, the brake 20 is used to fix the gear 19, preventing it from rotating and thus fixing the position of the two clamping plates 17. During testing, this prevents the reducer 2 from shaking. Even if the reducer 2 is damaged under overload conditions, it will not cause large displacement or bounce, threatening the safety of surrounding personnel. At the same time, it can also protect the magnetic powder brake 1 and the motor 5, preventing impact damage to the output shafts of the magnetic powder brake 1 and the motor 5.

[0031] Referring to Figures 1, 2, and 4, the reducer mounting plate 7 has a strip groove 22 on the side near the gear 19. One end of the brake member 20 extends into the strip groove 22 to achieve a sliding connection with the reducer mounting plate 7. An elastic member 23 with one end abutting against the brake member 20 is fixedly installed in the strip groove 22. The direction of the elastic member 23's recovery deformation is towards the gear 19, so that the elastic member 23 drives the brake member 20 to move towards the side near the gear 19 to fix the gear 19.

[0032] The brake component 20 is rotatably connected to a hook 21 on the side away from the gear 19. A column 24 is fixedly installed on the gear reducer mounting plate 7 on the side of the hook 21 away from the gear 19. The distance between the hook 21 and the column 24 is less than the deformable distance of the elastic component 23. This allows the hook 21 to be hooked onto the column 24 after the brake component 20 is pulled apart from the gear 19, so as to temporarily fix the position of the brake component 20.

[0033] A rubber pad is fixedly installed on the side of the brake component 20 near the gear 19. The side of the rubber pad near the gear 19 is concave in an arc shape and the curvature is adapted to the gear 19, so that the gear 19 can be fixed at any time and will not rotate during the fixing process.

[0034] With the above technical solution, after the speed reducer 2 has been tested, the elastic element 23 is compressed by pulling the hook 21, and the brake element 20 disengages from the gear 19. The hook 21 is then rotated to hook onto the column 24, thus fixing the brake element 20 in a position separated from the gear 19. This allows the rotating rod 18 to be rotated to move the two clamping plates 17 away from each other and release their clamping of the speed reducer 2, so that a new speed reducer 2 can be replaced. After the new speed reducer 2 is placed and connected, the new speed reducer 2 is clamped by rotating the rotating rod 18. By rotating the hook 21 to disengage from the column 24, the elastic element 23 recovers its elasticity and automatically pushes the brake element 20 to re-engage with the gear 19 and fix it in place, facilitating the start of a new round of testing.

[0035] Referring to Figures 1, 3, and 5, at least two slide rails 10 are fixedly installed on the test bench base 8. Matching sliders 11 are slidably installed on the slide rails 10. The magnetic powder brake 1 is fixedly installed on several sliders 11, so that the magnetic powder brake 1 can be more convenient and smooth when engaging or disengaging with the reducer 2. Support plates are fixedly installed on several sliders 11. The magnetic powder brake 1 is slidably installed on the support plates and the sliding direction is perpendicular to the sliding direction of the sliders 11, so as to facilitate the adjustment of the lateral position of the magnetic powder brake 1. The sensor mounting base 6 is fixedly installed on the support plate. A sensor is installed on the top of the sensor mounting base 6. The detection end of the sensor faces the output shaft of the magnetic powder brake 1 to detect the torque of the magnetic powder brake 1.

[0036] At least two supports 26 are fixedly installed on opposite sides of the test bench base 8. A round rod 27 is rotatably connected within each support 26. The bottom end of the round rod 27 is inserted into a gear 28. The two sides of a U-shaped rod 25 are slidably connected to opposite sides of the test bench base 8. Each opposite side of the U-shaped rod 25 has a toothed groove that meshes with one of the gears 28. The base plate 9 is located on top of the test bench base 8. The slide rail 10 is fixed to the base plate 9. The two opposite sides of the base plate 9... Each side is fixedly installed with a threaded seat 29 corresponding to a plurality of supports 26. The top end of the round rod 27 is fixedly installed with a screw 30 that passes through the threaded seat 29 and is threadedly connected to the threaded seat 29. The threaded connection directions of the threaded seats 29 and the screw 30 on different sides are opposite, so that when the U-shaped rod 25 is pulled to slide on the test platform base 8, the gears 28 on both sides are driven to rotate at the same time, so that the screw 30 rotates and drives the base plate 9 to rise or fall at a constant angle, thereby adjusting the height of the magnetic powder brake 1.

[0037] Through the above technical solution, when testing reducers 2 of different sizes, the position can be easily adjusted to align with the output shaft of the magnetic powder brake 1, and the function of adjusting the height of the magnetic powder brake 1 is added. This multi-functional testing device for multi-specification dual-lead reducers can be adapted to more types of reducers 2. For example, for larger reducers 2, if the output shaft of the magnetic powder brake 1 is still lower than the output end of the reducer 2 after adjusting the reducer mounting plate 7 to its lowest position, the height of the magnetic powder brake 1 can be adjusted to align it, thus making the adaptation range wider.

[0038] It also includes a power-off protector, whose input terminal is electrically connected to the sensor and whose output terminal is electrically connected to the power supply terminal of the motor (5), so that the power supply to the motor (5) is disconnected when the test torque reaches the rated value set by the power-off protector. The sensor output signal is a current signal. The power-off protector includes an inductor and a trigger switch. The input terminal of the inductor is electrically connected to the sensor to detect the magnitude of the sensor's current output signal. The output terminal of the inductor is electrically connected to the input terminal of the trigger switch. The output terminal of the trigger switch is electrically connected to the power supply terminal of the motor (5). By pre-setting the inductor threshold, when the sensor current signal value reaches the inductor threshold, the trigger switch responds and disconnects the power supply connection to the motor (5). In one specific embodiment, the threshold set by the power-off protector is 500 Nm.

[0039] The implementation principle of the multi-functional testing device for multi-specification dual-lead reducers in this application embodiment is as follows:

[0040] After placing the reducer 2, turn the handwheel 13 to adjust the height of the reducer mounting plate 7 using the lifting mechanism 12, thereby adjusting the reducer 2 to a suitable height. If the adjustment range is insufficient, pull the U-shaped rod 25 to rotate the gear 28, which in turn rotates the round rod 27 and the screw 30. Then, the screw 30 drives the threaded seat 29 to adjust the height of the base plate 9, thereby adjusting the height of the magnetic powder brake 1 mounted on the base plate 9 to align it with the output end of the reducer 2. This allows the reducer 2 to be properly positioned. After the motor 5 and the magnetic powder brake 1 are connected, the rotating rod 18 is rotated, causing the gear 19 to drive the two toothed plates 16 to move, thereby driving the two clamping plates 17 to move closer to each other until they come into contact with the reducer 2. Then, the hook 21 is removed from the column 24, and the elastic force of the elastic element 23 to restore its deformation drives the brake element 20 to move to contact the gear 19 and hold the gear 19, thereby fixing the gear 19 to fix the position of the two clamping plates 17, so that the reducer 2 remains in a fixed position and does not shake during the test.

[0041] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A multi-functional testing device for multi-specification dual-lead reducers, characterized in that, The system includes a liftable speed reducer mounting plate (7), on which a speed reducer (2) is placed. A motor (5) is detachably and fixedly mounted on the speed reducer mounting plate (7). The output end of the motor (5) is connected to the input end of the speed reducer (2). The output end of the magnetic powder brake (1) is connected to the test output shaft (4). Two toothed plates (16) are slidably connected horizontally on the speed reducer mounting plate (7). A rotating rod (18) located between the two toothed plates (16) is rotatably connected on the speed reducer mounting plate (7). A gear (19) is fixedly sleeved on the rotating rod (18). The gear (19) meshes with both toothed plates (16) simultaneously. (16) A clamping plate (17) is fixedly installed on the top. The two clamping plates (17) are located on the same horizontal plane on opposite sides of the reducer (2) and are symmetrically distributed with the reducer (2) as the reference. A brake (20) matching the gear (19) is movably connected to the reducer mounting plate (7). This allows the two gear plates (16) to move through the gear (19) when the rotating rod (18) is rotated, so that the two clamping plates (17) move synchronously closer to the reducer (2) or synchronously move away from the reducer (2). A strip groove (22) is opened on the side of the reducer mounting plate (7) near the gear (19). One end of the brake (20) extends into the strip groove (22). To achieve a sliding connection with the reducer mounting plate (7), an elastic element (23) with one end abutting against the brake element (20) is fixedly installed in the strip groove (22), so that the elastic element (23) drives the brake element (20) to move closer to the gear (19) to fix the gear (19); a hook (21) is rotatably connected to the side of the brake element (20) away from the gear (19), and a column (24) is fixedly installed on the reducer mounting plate (7), so that after the brake element (20) is pulled apart from the gear (19), the hook (21) can be hooked on the column (24) to fix the brake element (20); a test bench base (8) is also included. A lift (12) is fixedly installed on the test bench base (8). Several guide shafts (14) that can slide and are inserted into the test bench base (8) are fixedly installed on the bottom of the reducer mounting plate (7). This allows the guide shafts (14) to guide the reducer mounting plate (7) when the lift (12) controls the lifting of the reducer mounting plate (7). At least two slide rails (10) are fixedly installed on the test bench base (8). Matching sliders (11) are slidably installed on the slide rails (10). The magnetic powder brake (1) is fixedly installed on several sliders (11). This makes it easier and smoother for the magnetic powder brake (1) to engage or disengage with the reducer (2).

2. The multi-functional testing device for a multi-specification dual-lead reducer as described in claim 1, characterized in that: Two of the clamps (17) are fixedly mounted with protrusions on opposite sides. The protrusions are in contact with the front of the reducer (2), so that the magnetic powder brake (1) pushes the reducer (2) to contact the protrusion after being connected to the reducer (2).

3. The multi-functional testing device for a multi-specification dual-lead reducer as described in claim 1, characterized in that: A rubber pad is fixedly installed on the side of the brake component (20) near the gear (19). The side of the rubber pad near the gear (19) is concave in an arc shape and the arc is adapted to the gear (19).

4. The multi-functional testing device for a multi-specification dual-lead reducer as described in claim 1, characterized in that: It also includes a power-off protector and a sensor for detecting the torque of the magnetic powder brake (1). The input end of the power-off protector is electrically connected to the sensor, and the output end is electrically connected to the power supply end of the motor (5), so that the power supply to the motor (5) is disconnected when the test torque reaches the rated value set by the power-off protector.

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