A precision reducer running performance test equipment

Abstract

The invention discloses a precision reducer running performance test device, which relates to the technical field of reducer, and comprises a workbench, an adjustment seat, a servo motor, a torque sensor, a coupling, a magnetic powder brake, a rotating shaft, a load component and a switching component. The load block generates resistance to the rotation of a limiting ring under the elastic rebound force of a load spring of the load component, thereby increasing the rotation resistance to the rotating shaft. When a swing rod drives a sliding bin to move downward through a reciprocating groove, the rotation resistance to the rotating shaft is released, and intermittent instantaneous high loads are applied to the reducer during operation to test the running performance of the reducer after being subjected to the instantaneous high load, thereby solving the defect that only a single load can be applied in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of reducers, and in particular to a precision reducer operating performance testing device. Background Art

[0002] The reducer is an independent component consisting of a gear transmission and a worm transmission enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine. After the reducer is produced, it needs to be tested to avoid quality problems that cause the reducer to fail to operate.

[0003] The existing tests for reducers are divided into transmission efficiency tests, torque tests, and durability tests. In the torque test, the load strength of the reducer is mostly adjusted by a magnetic powder brake. In the actual use of the reducer, it will be subjected to different environments and different load conditions. If the reducer is in use and there is an instantaneous high load, the reducer is prone to short-term jams, and then the internal parts of the reducer will be excessively worn. When the internal parts of the reducer are worn, it will affect the service life of the reducer. In addition, it will also affect the safety of the reducer during transmission. Therefore, when performing a torque test on the reducer, it is necessary to simulate the situation of instantaneous high load on the reducer. However, the existing related testing equipment can only apply a single load and cannot provide instantaneous high loads.

[0004] In order to solve the above problems, the inventor proposed a precision reducer running performance testing device. Summary of the invention

[0005] In order to solve the above technical problems, a precision reducer running performance testing device is provided. This technical solution solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention can be implemented by the following technical solutions:

[0007] The present invention provides a precision reducer running performance test device, comprising a workbench, an adjustment seat, a servo motor, a torque sensor, a coupling, a magnetic powder brake instrument and a rotating shaft, wherein the adjustment seat is fixedly connected to the upper surface of the workbench, the servo motor and the reducer are both detachably connected in the adjustment seat, and the servo motor is fixedly connected to the input shaft of the reducer through a coupling, the torque sensor is fixedly connected to the upper surface of the workbench, and the input shaft of the torque sensor is fixedly connected to the output shaft of the reducer through a coupling, the magnetic powder brake instrument is fixedly connected to the upper surface of the workbench, and the rotating shaft of the magnetic powder brake instrument is connected to the torque sensor through a coupling, and a load component is arranged on one side of the workbench close to the magnetic powder brake instrument;

[0008] The load assembly includes a base fixedly connected to the upper surface of the workbench, two slide racks are symmetrically fixedly connected to the upper surface of the base, a sliding bin is slidably connected between the two slide racks, a load block is arranged inside the sliding bin, load springs are connected between the two sides of the load block and the inner wall of the sliding bin, a plurality of grab blocks are evenly arranged on the bottom of the load block, and a limiting ring is fixedly connected to one end of the rotating shaft extending to the outside of the magnetic powder brake.

[0009] Furthermore, a switching assembly is provided on the base, and the switching assembly includes a stand fixedly connected to the base, the stand rotatably connected to a swing shaft, a sprocket 1 is sleeved on the swing shaft, an end of the swing shaft close to the sliding bin is fixedly connected to a swing rod, a reciprocating groove is provided on the outer wall of the sliding bin, the end of the swing rod is slidably arranged in the reciprocating groove, a sprocket 2 is rotatably connected to the top of the stand, a chain is transmission-connected between the sprocket 2 and the sprocket 1, a clamping shaft is slidably connected inside the sprocket 2, a pushing block is sleeved on the outer side of the clamping shaft, a ball is rollingly connected between the clamping shaft and the pushing block, a limiting plate is fixedly connected to a side of the outer wall of the pushing block close to the stand, and a connecting port is provided on the rotating shaft.

[0010] Furthermore, slide openings are provided on both sides of the sliding bin, and slide bars are fixedly connected to the outer walls of both sides of the load block, and the slide bars are slidably arranged in the slide openings. An electromagnet is fixedly connected to the middle of the load block, and the electromagnet is connected to a current regulator.

[0011] Furthermore, magnetorheological fluid is stored at the bottom of the inner cavity of the sliding chamber, and the bottom of the load block is immersed in the magnetorheological fluid.

[0012] Furthermore, a plurality of arc grooves are evenly formed on the top of the load block, and protrusions matching the arc grooves on the load block are evenly formed on the outer wall of the limiting ring.

[0013] Furthermore, a through hole is provided inside the sprocket wheel 2, and the through hole is composed of a circular hole and a keyway arranged on the inner wall of the circular hole. The shape of the clamping shaft is adapted to the shape of the through hole. A rolling groove is provided on the outer wall of the clamping shaft. The ball is embedded in the rolling groove of the clamping shaft. The shape of the connecting port is adapted to the shape of the clamping shaft.

[0014] Furthermore, a limiting groove is provided on the top outer wall of the stand, and the limiting plate can slide in the limiting groove.

[0015] In summary, the beneficial effects of the precision reducer running performance testing device in the present invention are as follows:

[0016] The elastic rebound of the load spring causes the load block to generate resistance to the rotation of the limiting ring, thereby increasing the rotation resistance of the rotating shaft. When the swing rod drives the sliding bin to move downward, the sliding bin drives the load block to move downward, thereby releasing the rotation resistance of the load block to the limiting ring. In this way, intermittent instantaneous high loads are applied to the reducer during operation to test the operating performance of the reducer after being subjected to instantaneous high loads, thereby solving the defect of only being able to apply a single load in the prior art.

[0017] By setting up magnetorheological fluid, electromagnet and current regulator, the torque applied to the reducer can be further changed, so as to detect the impact on the performance of the reducer under different instantaneous high load conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a three-dimensional schematic diagram of a load assembly of the present invention;

[0020] Figure 3 It is a partial structural sectional perspective schematic diagram of the present invention;

[0021] Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement in the middle;

[0022] Figure 5 For the present invention Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0023] Figure 6 It is a three-dimensional schematic diagram of the switching assembly and other components of the present invention;

[0024] Figure 7 For the present invention Figure 6 A schematic diagram of the structure enlarged at C in the middle;

[0025] Figure 8 It is an exploded schematic diagram of components such as a sliding bin and a load block of the present invention;

[0026] Fig. 9 It is an exploded schematic diagram of the switching component of the present invention.

[0027] Among them, the accompanying drawings in the present invention are:

[0028] 1. Workbench; 2. Adjustment seat; 3. Servo motor; 4. Reducer; 5. Torque sensor; 6. Coupling; 7. Magnetic powder brake; 71. Rotating shaft;

[0029] The load assembly includes: 81, base; 82, slide frame; 83, slide bin; 831, slideway opening; 84, load spring; 85, load block; 851, slide bar; 852, electromagnet; 86, grab block; 88, limit ring;

[0030] The switching assembly includes: 91, a stand; 92, a swing shaft; 93, a sprocket wheel one; 94, a swing rod; 95, a reciprocating groove; 96, a sprocket wheel two; 97, a chain; 98, a clamping shaft; 99, a pushing block; 910, a ball bearing; 911, a limit plate; 912, a connecting port. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 9 As shown, a precision reducer running performance test device disclosed in a preferred embodiment of the present invention will be described in detail below:

[0033] like Figure 1 and Figure 2 As shown, the precision reducer running performance test equipment includes a workbench 1, an adjustment seat 2, a servo motor 3, a torque sensor 5, a coupling 6, a magnetic powder brake instrument 7 and a rotating shaft 71, the adjustment seat 2 is fixedly connected to the upper surface of the workbench 1, the servo motor 3 and the reducer 4 are both detachably connected in the adjustment seat 2, and the servo motor 3 and the input shaft of the reducer 4 are fixedly connected through the coupling 6, the torque sensor 5 is fixedly connected to the upper surface of the workbench 1, and the input shaft of the torque sensor 5 and the output shaft of the reducer 4 are fixedly connected through the coupling 6, the magnetic powder brake instrument 7 is fixedly connected to the upper surface of the workbench 1, and the rotating shaft 71 of the magnetic powder brake instrument 7 is connected to the output shaft of the torque sensor 5 through the coupling 6, and a load component for adding different loads to the magnetic powder brake instrument 7 is provided on one side of the workbench 1 close to the magnetic powder brake instrument 7;

[0034] Please refer to Figure 2 , Figure 6 as well as Figure 8The load assembly includes a base 81 fixedly connected to the upper surface of the workbench 1. The upper surface of the base 81 is symmetrically fixedly connected with two slide racks 82 by bolts. A sliding bin 83 is slidably connected between the two slide racks 82. The sliding bin 83 can slide up and down on the slide rack 82. Slide openings 831 are provided on both sides of the sliding bin 83. The sliding bin 83 is provided with a cavity. The inner cavity of the sliding bin 83 stores magnetorheological fluid. A load block 85 is slidably provided inside the sliding bin 83. The bottom of the load block 85 is immersed in the magnetic In the rheological fluid, load springs 84 are connected between the two sides of the load block 85 and the inner wall of the sliding chamber 83, and the outer walls of both sides of the load block 85 are fixedly connected with slide bars 851, which are located in the slideway opening 831 and can slide along the slideway opening 831. The middle of the load block 85 is fixedly connected with an electromagnet 852, and the electromagnet 852 is connected with a current regulator. By adjusting the current regulator, the current passing through the electromagnet 852 can be adjusted, thereby controlling the magnetic force generated by the electromagnet 852. The top of the load block 85 is evenly provided with a plurality of arc grooves, and the bottom of the load block 85 is evenly provided with a plurality of gripping blocks 86. The end of the rotating shaft 71 away from the torque sensor 5 is fixedly connected with a limiting ring 88 by bolts, and the outer wall of the limiting ring 88 is evenly provided with protrusions matching the arc grooves on the load block 85 along the circumferential direction.

[0035] like Figure 3 to Figure 7 as well as Fig. 9 As shown, a switching assembly is provided on the base 81, and the switching assembly includes a stand 91 fixedly connected to the upper surface of the base 81, a swing shaft 92 is rotatably connected to the stand 91, a sprocket 93 is sleeved on the swing shaft 92, a swing rod 94 is fixedly connected to the end of the swing shaft 92 close to the sliding bin 83, a reciprocating groove 95 is provided on the outer wall of the sliding bin 83, and the end of the swing rod 94 close to the sliding bin 83 can slide in the reciprocating groove 95, and a sprocket 2 96 is rotatably connected to the top of the stand 91, and a transmission is transmitted between the sprocket 2 96 and the sprocket 1 93. A chain 97 is connected, and a through hole is provided inside the sprocket wheel 96. The through hole is composed of a circular hole and a keyway arranged on the inner wall of the circular hole. A clamping shaft 98 is slidably connected inside the through hole. The shape of the clamping shaft 98 matches the shape of the through hole. A pushing block 99 is sleeved on the outer side of the clamping shaft 98. The outer wall of the clamping shaft 98 and the inner wall of the pushing block 99 are provided with corresponding rolling grooves. A ball 910 is rollingly connected between the clamping shaft 98 and the pushing block 99. The ball 910 is embedded in the rolling groove between the clamping shaft 98 and the pushing block 99. A limiting groove is provided on the stand 91. A limiting plate 911 is fixedly connected to the outer wall of the pushing block 99 close to the stand 91, and the limiting plate 911 can slide inside the limiting groove. A connecting port 912 is provided on the rotating shaft 71, and the shape of the connecting port 912 matches the shape of the clamping shaft 98.

[0036] The following is the entire working process and working principle of the above embodiment:

[0037] The initial state is: the sliding compartment 83 is located at the lowest position of the sliding slot frame 82 , the load spring 84 is not deformed, and the clamping shaft 98 is not inserted into the interior of the connecting port 912 .

[0038] The working status is:

[0039] The operator adjusts the servo motor 3 and the reducer 4 to the appropriate position on the adjustment seat 2, and ensures that the servo motor 3 and the reducer 4 are tightly connected. At the same time, the operator checks the tightness of the connection between the coupling 6 and the reducer 4, the torque sensor 5, and the magnetic powder brake 7. After the inspection is correct, the operator starts the servo motor 3, and the servo motor 3 drives the reducer 4 to operate. The torque generated by the reducer 4 is detected by the torque sensor 5, and the operator starts the magnetic powder brake 7, which performs a torque test on the reducer 4, wherein the coupling 6 can drive the rotating shaft 71 in the magnetic powder brake 7 to rotate.

[0040] Switch the component to the transmission state:

[0041] The operator presses the pushing block 99, so that the limit plate 911 slides in the limit groove toward the direction of the stand 91, and the pushing block 99 drives the card shaft 98 to slide in the through hole of the sprocket wheel 2 96. At this time, the card shaft 98 moves toward the side of the connecting port 912. Because the connecting port 912 is adapted to the shape of the card shaft 98, when the card shaft 98 is embedded in the inside of the connecting port 912, the rotating shaft 71 synchronously drives the card shaft 98 to rotate. Because the card shaft 98 and the pushing block 99 form a rotating connection through the ball 910, the rotation of the card shaft 98 will not drive the pushing block 99 to rotate. The card shaft 98 drives the sprocket wheel 2 96 to rotate on the stand 91, and the sprocket wheel 2 96 drives the sprocket wheel 1 93 to rotate through the transmission of the chain 97, and the sprocket wheel 1 93 drives the swing shaft 92 and the swing rod 94 to rotate.

[0042] The load component adjusts the size of the load:

[0043] If the load size carried by the reducer 4 changes during operation, such as a sudden increase in load, it may cause jerks in operation. This is because the load change causes fluctuations in the torque of the reducer 4, thereby affecting the smooth operation of the reducer 4. The load component can be used to apply intermittent instantaneous high loads to the reducer 4 during operation to test the operating performance of the reducer 4 after being subjected to instantaneous high loads.

[0044] Since the end of the swing rod 94 away from the swing shaft 92 can slide inside the reciprocating groove 95, the swing rod 94 will drive the sliding bin 83 to move upward first and then downward inside the sliding groove frame 82 during the rotation of the swing rod 94, thereby realizing the reciprocating up and down movement of the sliding bin 83 caused by the rotation of the swing rod 94. When the sliding bin 83 moves upward, it will drive the load block 85 sliding inside it to move upward. When the load block 85 moves upward, the arc groove on it will conflict with the protrusion of the limiting ring 88. Because the arc groove of the load block 85 is compatible with the protrusion of the limiting ring 88, a protrusion on the limiting ring 88 will be embedded in the arc groove of the load block 85. Therefore, in the process of the limiting ring 88 driven by the rotating shaft 71 to continuously rotate, the limiting ring 88 will drive the load block 85 to move inside the sliding bin 83. At this time, the slide bar 851 on the load block 85 will slide horizontally in the slideway opening 831 on the sliding bin 83. At the same time, the horizontal sliding of the load block 85 will compress the load spring 84 to deform, and under the action of the elastic rebound force of the load spring 84, the load block 85 will generate resistance to the rotation of the limiting ring 88, thereby increasing the rotation resistance of the rotating shaft 71, but the rotating shaft 71 can still continue to rotate, which will eventually increase the load borne by the reducer 4. At the same time, when the swing rod 94 drives the sliding bin 83 to move downward, the sliding bin 83 will also drive the load block 85 to move downward, so that the arc groove on the load block 85 cannot contact the protrusion of the limiting ring 88, thereby releasing the rotational resistance of the load block 85 to the limiting ring 88. In this way, periodic load operation is realized, and the purpose of changing the torque applied to the reducer 4 is achieved, thereby testing the impact of the torque change on the performance of the reducer 4.

[0045] If you want to further change the torque of the reducer 4, you can energize the electromagnet 852, which will generate a magnetic field. At this time, the magnetic field generated by the electromagnet 852 will make the magnetorheological fluid viscous. Therefore, when the load block 85 slides horizontally inside the sliding chamber 83, the gripping block 86 at the bottom of the load block 85 slides in the magnetorheological fluid, and the magnetorheological fluid will slow down the sliding speed of the load block 85. When the arc groove of the load block 85 contacts the convex block of the limiting ring 88 again, the load block 85 is restricted from sliding quickly, and the torque of the limiting ring 88 will increase when it rotates, and the torque of the rotating shaft 71 will also increase. The viscous magnetorheological fluid increases the load of the rotating shaft 71, but the rotating shaft 71 can still continue to rotate slowly, realizing the intermittent high-load test of the reducer 4, so as to test whether the reducer 4 will be damaged after the high-load impact.

[0046] In addition, the current can be controlled by a current regulator, and thus the size of the magnetic field generated by the electromagnet 852 can be controlled. There is a corresponding relationship between the viscosity of the magnetorheological fluid and the size of the magnetic field generated by the electromagnet 852. By changing the size of the magnetic field of the electromagnet 852, the viscosity of the magnetorheological fluid can be changed, and thus the resistance encountered by the load block 85 when sliding can be changed, thereby achieving the adjustment of the load size of the reducer 4.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A precision reducer running performance testing device, comprising a workbench (1), an adjustment seat (2), a servo motor (3), a torque sensor (5), a coupling (6), a magnetic powder brake (7) and a rotating shaft (71), characterized in that: The adjustment seat (2) is fixedly connected to the upper surface of the workbench (1); the servo motor (3) and the reducer (4) are both detachably connected to the adjustment seat (2); the servo motor (3) and the input shaft of the reducer (4) are fixedly connected via a coupling (6); the torque sensor (5) is fixedly connected to the upper surface of the workbench (1); the input shaft of the torque sensor (5) and the output shaft of the reducer (4) are fixedly connected via a coupling (6); the magnetic powder brake (7) is fixedly connected to the upper surface of the workbench (1); the rotating shaft (71) of the magnetic powder brake (7) and the torque sensor (5) are connected via a coupling (6); and a load component is provided on a side of the workbench (1) close to the magnetic powder brake (7); The load assembly comprises a base (81) fixedly connected to the upper surface of the workbench (1), two slide slot frames (82) are symmetrically fixedly connected to the upper surface of the base (81), a sliding bin (83) is slidably connected between the two slide slot frames (82), a load block (85) is arranged inside the sliding bin (83), load springs (84) are connected between the two sides of the load block (85) and the inner wall of the sliding bin (83), a plurality of gripping blocks (86) are evenly arranged at the bottom of the load block (85), and a limiting ring (88) is fixedly connected to one end of the rotating shaft (71) extending to the outside of the magnetic powder brake (7); The sliding bin (83) performs up-and-down reciprocating motion inside the slide slot frame (82). When the sliding bin (83) moves upward, it drives the load block (85) sliding inside it to move upward. When the load block (85) moves upward, it contacts the limiting ring (88), and then the limiting ring (88) rotates to drive the load block (85) to move horizontally inside the sliding bin (83). The horizontal movement of the load block (85) causes the load spring (84) to deform. Under the action of the elastic rebound force of the load spring (84), the load block (85) generates resistance to the rotation of the limiting ring (88), thereby increasing the rotation resistance of the rotating shaft (71); when the sliding bin (83) moves downward, it drives the load block (85) to move downward, thereby releasing the rotation resistance of the load block (85) to the limiting ring (88), thereby achieving an instantaneous high load applied to the operation of the reducer (4).

2. The precision reducer running performance test equipment according to claim 1, characterized in that: The base (81) is provided with a switching assembly, the switching assembly comprising a stand (91) fixedly connected to the base (81), the stand (91) being rotatably connected to a swing shaft (92), the swing shaft (92) being sleeved with a sprocket wheel (93), the swing shaft (92) being fixedly connected to an end of a swing shaft (92) close to the sliding bin (83) with a swing rod (94), the outer wall of the sliding bin (83) being provided with a reciprocating groove (95), the end of the swing rod (94) being slidably arranged in the reciprocating groove (95), and the stand (91) being rotatably connected to a swing shaft (92), the swing shaft (92) being sleeved with a sprocket wheel (93), the swing shaft (92) being fixedly connected to an end of a swing shaft (94) close to the sliding bin (83), the outer wall of the sliding bin (83) being provided with a reciprocating groove (95), the end of the swing rod (94) being slidably arranged in the reciprocating groove (95), The top is rotatably connected to a second sprocket (96), the second sprocket (96) and the first sprocket (93) are transmission-connected by a chain (97), the interior of the second sprocket (96) is slidably connected to a clamping shaft (98), the outer side of the clamping shaft (98) is sleeved with a pushing block (99), a ball (910) is rollingly connected between the clamping shaft (98) and the pushing block (99), the outer wall of the pushing block (99) is fixedly connected to a limiting plate (911) on one side close to the stand (91), and a connecting port (912) is provided on the rotating shaft (71).

3. The precision reducer running performance test equipment according to claim 1 is characterized in that: Slide openings (831) are provided on both sides of the sliding bin (83), and slide bars (851) are fixedly connected to the outer walls on both sides of the load block (85), and the slide bars (851) are slidably arranged in the slide openings (831). An electromagnet (852) is fixedly connected to the middle of the load block (85), and the electromagnet (852) is connected to a current regulator.

4. The precision reducer running performance test equipment according to claim 1, characterized in that: The bottom of the inner cavity of the sliding chamber (83) stores magnetorheological fluid, and the bottom of the load block (85) is immersed in the magnetorheological fluid.

5. The precision reducer running performance test equipment according to claim 1 is characterized in that: A plurality of arc grooves are evenly arranged on the top of the load block (85), and protrusions matching the arc grooves on the load block (85) are evenly arranged on the outer wall of the limiting ring (88).

6. The precision reducer running performance test equipment according to claim 2, characterized in that: A through hole is provided inside the sprocket wheel 2 (96), and the through hole is composed of a circular hole and a keyway arranged on the inner wall of the circular hole. The shape of the clamping shaft (98) is compatible with the shape of the through hole. A rolling groove is provided on the outer wall of the clamping shaft (98). The ball (910) is embedded in the rolling groove of the clamping shaft (98). The shape of the connecting port (912) is compatible with the shape of the clamping shaft (98).

7. The precision reducer running performance test equipment according to claim 2, characterized in that: A limiting groove is provided on the top outer wall of the stand (91), and the limiting plate (911) is capable of sliding in the limiting groove.

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