A speed reducer stiffness testing device

Abstract

This utility model relates to the field of stiffness testing technology, specifically a speed reducer stiffness testing device. It includes a speed reducer limiting platform and a speed reducer movably fitted onto the inner wall of the limiting platform. A limiting collar is movably fitted onto one edge of the limiting platform. An output end is fixedly installed on the output end of the speed reducer, and threaded collars are symmetrically fixedly installed on both sides of the limiting collar. When the arc-shaped connecting collar moves on the surface of the output end, two pairs of supporting fixed arms on the outer surface of the sliding plate rotate, causing the slider on the outer surface of the hydraulic rod to rotate on the inner wall of the limiting collar. This allows the output end to be calibrated, and simultaneously, the output end with excessive oscillation will preferentially impact the surface of the hydraulic rod. The impact force passes through the surfaces of the slider and the limiting collar, thus damping and eliminating the impact force on the output end.

Description

Technical Field

[0001] This utility model relates to the field of stiffness testing technology, and in particular to a speed reducer stiffness testing device. Background Technology

[0002] A speed reducer is an independent component consisting of gear transmission, worm transmission, or gear and 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, and plays a role in matching speed and transmitting torque between the prime mover and the working machine or actuator. It is widely used in modern machinery.

[0003] A patent with publication number CN113465846A discloses a speed reducer stiffness testing device, belonging to the field of speed reducers. The device includes a base plate, a testing box fixedly connected to the top of the base plate, a cover hinged to the top of the testing box, and clamping components located at the bottom of the cover and inside the testing box. A laser rangefinder sensor is fixedly installed on the left side inside the testing box. The testing components are fixedly installed on the top of the base plate. The clamping components include four racks, four moving blocks, eight second gears, four rotating rods, a first gear, and a servo motor. Mounting boxes are fixedly connected to the inside of the testing box and the bottom of the cover. Two servo motors are respectively fixedly installed inside the two mounting boxes, effectively clamping and fixing the speed reducer spindle, reducing spindle offset during clamping, and thus ensuring testing accuracy.

[0004] The existing reducer spindle needs to be tested for stiffness after production to ensure quality and performance. However, the existing stiffness testing devices are not very effective at clamping and fixing the reducer spindle, and some output ends may be slightly bent. When clamping slightly bent output ends, the angle problem may prevent effective clamping. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the fact that the existing stiffness detection devices in the prior art have a generally poor clamping and fixing effect on the reducer spindle, and some output ends will be slightly bent. When clamping the slightly bent output ends, the angle problem will prevent them from being effectively clamped.

[0006] To solve the above-mentioned technical problems, this utility model provides a speed reducer stiffness testing device, including a speed reducer limiting platform and a speed reducer movably sleeved on the inner wall of the speed reducer limiting platform. A limiting sleeve is movably sleeved on one side edge of the speed reducer limiting platform. An output end is fixedly installed on the output end of the speed reducer. Threaded sleeves are symmetrically fixedly installed on both sides edge of the limiting sleeve. An arc-shaped mating sleeve is provided on the inner wall of the limiting sleeve, movably overlapping the outer surface of the output end. A motor is fixedly installed on one side edge of the speed reducer limiting platform. A threaded rod is fixedly connected to the output end of the motor, and is threadedly sleeved on the inner wall of the threaded sleeve.

[0007] In one embodiment of the present invention, a threaded rod is fixedly connected to the top surface of the reducer limiting platform and at the periphery. A lower pressure cover is movably sleeved on the outer surface of the threaded rod, and a semi-circular groove is provided on the top inner wall of the lower pressure cover.

[0008] In one embodiment of the present invention, a shock-absorbing pad is fixedly connected to the inner wall of the semi-circular groove, and a hexagonal nut is threadedly fitted onto the outer surface of the threaded rod and located at the top edge of the lower pressure cover.

[0009] In one embodiment of the present invention, a limiting strip is fixedly connected to one side surface of the reducer limiting platform and located at the bottom edge, and a limiting slide is fixedly connected to the other side surface of the limiting strip.

[0010] In one embodiment of the present invention, a sliding plate is movably sleeved on the outer surface of the limiting slide bar, and a second motor is provided on the outer surface of the sliding plate at the top edge of the limiting strip.

[0011] In one embodiment of this utility model, a support arm is fixedly connected to the output end of the second motor, and a slider is movably sleeved on the inner wall of the limiting collar.

[0012] In one embodiment of this utility model, one end of the support fixing arm is fixedly connected to the outer surface of the slider, and the output end of the slider is fixedly connected to the hydraulic rod on the outer surface of the arc-shaped mating collar.

[0013] In one embodiment of this utility model, the bottom surface of the limiting collar slides onto the top surface of the limiting strip, and the inner wall of the shock-absorbing pad is movably sleeved onto the outer surface of the reducer.

[0014] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0015] The present invention discloses a reducer stiffness testing device. After the reducer is fixed, a hydraulic rod is used to extend the arc-shaped mating ring and overlap the surface of the arc-shaped mating ring with the surface of the reducer output end. The arc-shaped mating ring is then preferentially attached to the outer surface of the output end. When the reducer is started, the output end rotates at high speed on the inner wall of the arc-shaped mating ring. At the same time, a pair of threaded rods are rotated by a motor. The threaded ring on the outer surface of the threaded rods drives the limiting ring to move from left to right on the surface of the threaded rods. Since the inner wall of the arc-shaped mating ring is tightly attached to the outer surface of the output end, the moving arc-shaped mating ring gradually compresses and straightens the bending position of the output end, and gradually calibrates the output end.

[0016] The reducer stiffness testing device of this utility model, when the arc-shaped mating collar moves on the surface of the output end, coordinates with the two pairs of support and fixing arms of the motor on the outer surface of the slide plate to rotate, and drives the slider on the outer surface of the hydraulic rod to rotate on the inner wall of the limiting collar. This allows the output end to be calibrated at the same time, so that the output end with excessive swing amplitude will first hit the surface of the hydraulic rod, and the impact force passes through the surface of the slider and the limiting collar, thus damping and eliminating the impact force of the output end. Attached Figure Description

[0017] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a sectional perspective view of the reducer limiting platform in this utility model;

[0020] Figure 3 This is a three-dimensional cross-sectional view of the reducer limiting platform and limiting ring in this utility model;

[0021] Figure 4 This is a three-dimensional cross-sectional view of the speed reducer in this utility model;

[0022] Figure 5 This is a perspective view of the support and fixing arm in this utility model;

[0023] Figure 6 This is a three-dimensional view of the swinging arc-shaped docking ring in this utility model;

[0024] Figure 7 This is a partially sectional perspective view of the speed reducer limiting platform in this utility model.

[0025] Explanation of reference numerals in the accompanying drawings: 11. Reducer limiting platform; a1. Threaded rod one; a2. Lower pressure cover; a3. Semi-circular groove; a4. Shock-absorbing pad; a5. Hexagonal nut; 111. Limiting strip; 112. Motor one; 113. Threaded rod two; 114. Limiting slide bar; 115. Slide plate; 116. Motor two; 117. Support fixing arm; 12. Reducer; 121. Output end; 13. Limiting collar; 131. Threaded collar; 132. Slider; 133. Hydraulic rod; 134. Arc-shaped mating collar. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0027] Reference Figure 1 - Figure 7 As shown, this utility model discloses a speed reducer stiffness testing device, including a speed reducer limiting platform 11 and a speed reducer 12 movably sleeved on the inner wall of the speed reducer limiting platform 11. A limiting sleeve 13 is movably sleeved on one side edge of the speed reducer limiting platform 11. An output end 121 is fixedly installed on the output end of the speed reducer 12. Threaded sleeves 131 are symmetrically fixedly installed on both sides of the limiting sleeve 13. An arc-shaped mating sleeve 134 is provided on the inner wall of the limiting sleeve 13, movably overlapping the outer surface of the output end 121. A motor 112 is fixedly installed on one side edge of the speed reducer limiting platform 11. A threaded rod 113 is fixedly connected to the output end of the motor 112, threadedly sleeved on the inner wall of the threaded sleeve 131. The speed reducer limiting platform 11 is located on one side surface and at the bottom. A limiting strip 111 is fixedly connected to the edge position, and a limiting slide 114 is fixedly connected to the other side surface of the limiting strip 111. A slide plate 115 is movably sleeved on the outer surface of the limiting slide 114. A motor 116 is provided on the outer surface of the slide plate 115 and at the top edge of the limiting strip 111. A support fixing arm 117 is fixedly connected to the output end of the motor 116. A slider 132 is movably sleeved on the inner wall of the limiting collar 13. One end of the support fixing arm 117 is fixedly connected to the outer surface of the slider 132. The output end of the slider 132 is fixedly connected to the hydraulic rod 133 on the outer surface of the arc-shaped docking collar 134. The bottom surface of the limiting collar 13 slides over the top surface of the limiting strip 111. The inner wall of the shock-absorbing pad a4 is movably sleeved on the outer surface of the reducer 12.

[0028] After the reducer 12 is fixed, the arc-shaped mating collar 134 is extended with the hydraulic rod 133, and the surface of the arc-shaped mating collar 134 overlaps the surface of the output end of the reducer 12, so that the arc-shaped mating collar 134 is preferentially attached to the outer surface of the output end 121. At this time, the reducer 12 is started. When the output end 121 rotates at high speed on the inner wall of the arc-shaped mating collar 134, the motor 112 rotates the threaded rod 113, so that the threaded collar 131 on the outer surface of the threaded rod 113 drives the limiting collar 13 to move from left to right on the surface of the threaded rod 113. Since the inner wall of the arc-shaped mating collar 134 will be tightly attached to the outer surface of the output end 121, the moving arc-shaped mating collar 134 will gradually compress and straighten the bending position of the output end 121, and make the output end 121 gradually calibrated.

[0029] As the arc-shaped docking collar 134 moves on the surface of the output end 121, the motor 116 on the outer surface of the slide plate 115 rotates the support fixing arm 117, which in turn drives the slider 132 on the outer surface of the hydraulic rod 133 to rotate on the inner wall of the limiting collar 13. This allows the output end 121 to be calibrated while the output end 121 is swinging too much, so that the output end 121 will first hit the surface of the hydraulic rod 133. The impact force passes through the surfaces of the slider 132 and the limiting collar 13, and the impact force of the output end 121 is damped and eliminated.

[0030] Reference Figure 1 - Figure 3 and Figure 7 As shown, in one embodiment of the present invention, a threaded rod a1 is fixedly connected to the top surface of the reducer limiting platform 11 and at the periphery. A lower pressure cover a2 is movably sleeved on the outer surface of the threaded rod a1. A semi-circular groove a3 is provided on the top inner wall of the lower pressure cover a2. A shock-absorbing pad a4 is fixedly connected to the inner wall of the semi-circular groove a3. A hexagonal nut a5 is threadedly movably sleeved on the outer surface of the threaded rod a1 and at the top edge of the lower pressure cover a2.

[0031] The reducer 12 is placed flat inside the reducer limiting platform 11, and the lower pressure cover a2 is inserted through the outer surface of the threaded rod a1. The lower pressure cover a2 overlaps the top surface of the reducer 12 through the semi-circular groove a3 on the inner wall of the lower pressure cover a2. The hexagonal nut a5 is fitted onto the surface of the threaded rod a1. With the continuous rotation of the hexagonal nut a5, the lower pressure cover a2 will continuously press and adhere to the top surface of the reducer 12, thereby limiting the position of the top surface of the reducer 12, so that the reducer 12, the reducer limiting platform 11 and the lower pressure cover a2 form a whole. Later, when the hardness of the reducer 12 is tested, the vibration of the reducer 12 is reduced by the use of the shock-absorbing pad a4.

[0032] Working principle: After the reducer 12 is fixed, the hydraulic rod 133 extends the arc-shaped mating collar 134 and overlaps the surface of the arc-shaped mating collar 134 with the surface of the output end of the reducer 12, so that the arc-shaped mating collar 134 first fits against the outer surface of the output end 121. At this time, the reducer 12 is started. When the output end 121 rotates at high speed on the inner wall of the arc-shaped mating collar 134, the motor 112 rotates the threaded rod 113, so that the threaded collar 131 on the outer surface of the threaded rod 113 drives the limiting collar 13 to move from left to right on the surface of the threaded rod 113. Since the inner wall of the arc-shaped mating collar 134 will be tightly fitted against the outer surface of the output end 121, the moving arc-shaped mating collar 134 will gradually compress and straighten the bending position of the output end 121, and make the output end 121 gradually calibrated.

[0033] As the arc-shaped docking collar 134 moves on the surface of the output end 121, the motor 116 on the outer surface of the slide plate 115 rotates the support fixing arm 117, which in turn drives the slider 132 on the outer surface of the hydraulic rod 133 to rotate on the inner wall of the limiting collar 13. This allows the output end 121 to be calibrated while the output end 121 is swinging too much, so that the output end 121 will first hit the surface of the hydraulic rod 133. The impact force passes through the surfaces of the slider 132 and the limiting collar 13, and the impact force of the output end 121 is damped and eliminated.

[0034] Obviously, the above embodiments are merely illustrative examples for clarity and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A speed reducer stiffness testing device, comprising a speed reducer limiting platform (11) and a speed reducer (12) movably sleeved on the inner wall of the speed reducer limiting platform (11), and a limiting sleeve (13) movably sleeved on one side edge of the speed reducer limiting platform (11), characterized in that: An output end (121) is fixedly installed on the output end of the reducer (12). Threaded rings (131) are symmetrically fixedly installed on both sides of the limiting ring (13). An arc-shaped mating ring (134) is provided on the inner wall of the limiting ring (13) and is movably connected to the outer surface of the output end (121). A motor (112) is fixedly installed on one side edge of the reducer limiting platform (11). A threaded rod (113) is fixedly connected to the output end of the motor (112) and is movably connected to the inner wall of the threaded ring (131).

2. The speed reducer stiffness testing device according to claim 1, characterized in that: A threaded rod (a1) is fixedly connected to the top surface of the reducer limiting platform (11) and at the four edges. A lower pressure cover (a2) is movably sleeved on the outer surface of the threaded rod (a1). A semi-circular groove (a3) ​​is provided on the top inner wall of the lower pressure cover (a2).

3. The speed reducer stiffness testing device according to claim 2, characterized in that: A shock-absorbing pad (a4) is fixedly connected to the inner wall of the semi-circular groove (a3), and a hexagonal nut (a5) is threadedly fitted onto the outer surface of the threaded rod (a1) at the top edge of the lower cover (a2).

4. The speed reducer stiffness testing device according to claim 3, characterized in that: A limiting strip (111) is fixedly connected to one side surface of the reducer limiting platform (11) and at the bottom edge position, and a limiting slide (114) is fixedly connected to the other side surface of the limiting strip (111).

5. The speed reducer stiffness testing device according to claim 4, characterized in that: A sliding plate (115) is movably sleeved on the outer surface of the limiting slide bar (114), and a motor (116) is provided on the outer surface of the sliding plate (115) at the top edge of the limiting bar (111).

6. The speed reducer stiffness testing device according to claim 5, characterized in that: A support arm (117) is fixedly connected to the output end of the second motor (116), and a slider (132) is movably sleeved on the inner wall of the limiting collar (13).

7. A reducer stiffness testing device according to claim 6, characterized in that: One end of the support fixing arm (117) is fixedly connected to the outer surface of the slider (132), and the output end of the slider (132) is fixedly connected to the hydraulic rod (133) on the outer surface of the arc-shaped docking collar (134).

8. A speed reducer stiffness testing device according to claim 7, characterized in that: The bottom surface of the limiting collar (13) slides and overlaps the top surface of the limiting strip (111), and the inner wall of the shock-absorbing pad (a4) is movably sleeved on the outer surface of the reducer (12).

Images