Rotatable gear torsional rigidity detection device

Abstract

A rotatable gear torsional rigidity detection device comprises a gear clamp, a base and a rotating column. The gear clamp comprises a left gear clamp body and a right gear clamp body, the left gear clamp body comprises a left sector ring part and a left clamping part, the right gear clamp body comprises a right sector ring part and a right clamping part, and a rotating column is inserted in the middle of a bearing groove of the base. Then the left clamping part and the right clamping part clamp the gear to be measured from the two sides of the gear to be measured so as to fix the gear to be measured, then the rotating column rotates, and when the rotating column stops rotating, the torsional rigidity of the gear to be measured is calculated according to the measured parameters; the distance between the left clamping part and the right clamping part can be adjusted, so that the adaptability to gears to be detected with different diameters is better, the left sector ring part and the right sector ring part are fixed by using friction force, a fixing mechanism is not needed, parts are simplified, and the production efficiency is improved. Therefore, the device is better in adaptability to the gears to be detected with different diameters, and is high in production efficiency.

Description

Technical Field

[0001] The invention relates to a gear stiffness detection device, belongs to the field of gear stiffness detection, and in particular to a rotatable gear torsional stiffness detection device. Background Art

[0002] The torsional stiffness of a gear refers to the gear's ability to resist deformation when subjected to torsion. Torsional stiffness is a very important parameter in the gear transmission system, which directly affects the stability, accuracy and life of the gear transmission.

[0003] A Chinese patent application with application number 202211631973.6 and application date December 19, 2022 discloses a torsional stiffness detection device for a planetary reducer, including a main engine, a lifting mechanism is fixedly connected to one side of the top surface of the main engine, a braking mechanism located on the top of the main engine is fixedly installed on one side of the lifting mechanism, four clamping mechanisms are fixedly installed on the bottom surface of the braking mechanism, and the inner sides of the bottoms of the four clamping mechanisms are movably connected to a planetary reduction assembly located on the top surface of the main engine, and a torque sensor and an angle sensor are detachably installed on the bottom of the planetary reduction assembly from top to bottom; by providing a braking mechanism and a planetary reduction assembly, it is beneficial for the output shaft of the motor to drive the screw fixedly sleeved therewith to rotate after the motor is braked, thereby driving the sun gear and the three planetary gears to rotate, and by replacing different combinations of sun gears and planetary gears, data measurement of the torque generated by planetary gears of different specifications can be performed. Although this design can detect the torsional stiffness of the gear, it still has the following defects: When testing gears of different diameters, this design requires replacing planetary gears of different diameters according to the diameters of the gears to be tested to fix the gears to be tested. Therefore, this design is not well adapted to gears of different diameters.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects and problems of the prior art in that the adaptability to gears to be tested of different diameters is poor, and to provide a rotatable gear torsional stiffness detection device with better adaptability to gears to be tested of different diameters.

[0006] To achieve the above objectives, the technical solution of the present invention is: A rotatable gear torsional stiffness detection device, the device comprising a gear fixture, a base and a rotating column; The gear fixture comprises a left gear fixture and a right gear fixture, wherein the left gear fixture comprises a left fan ring portion and a left clamping portion, wherein one end of the left clamping portion extends into the tooth gap of the gear to be tested, and the other end of the left clamping portion is connected to one end of the left fan ring portion, and the other side of the left fan ring portion is connected to the bearing groove of the base; the right gear fixture comprises a right fan ring portion and a right clamping portion, wherein one end of the right clamping portion extends into the tooth gap of the gear to be tested, and the other end of the right clamping portion is connected to one end of the right fan ring portion, and the other side of the right fan ring portion is connected to the bearing groove of the base; A through hole is provided in the middle of the bearing slot, the middle of the rotating column is inserted into the through hole, and one end of the rotating column located above the through hole is fixed to the middle of the gear to be tested.

[0007] The left clamping portion and the right clamping portion are symmetrically distributed along the center of the through hole, and the left fan ring portion and the right fan ring portion are symmetrically distributed along the center of the through hole.

[0008] A left fixing block is arranged on the top of the left fan ring, a left fixing hole is arranged on the left fixing block along the diameter direction of the base, the bottom of the left fixing hole is higher than the top of the gear to be measured, and one end of a screw is inserted into the left fixing hole; A right fixing block is arranged on the top of the right fan ring part, a right fixing hole is arranged on the right fixing block along the diameter direction of the base, the bottom of the right fixing hole is higher than the top of the gear to be measured, and the other end of the screw is inserted into the right fixing hole.

[0009] One end of the screw rod located outside the left fixing hole is a fixing end, and a fixing nut is sleeved on the outer surface of the fixing end, and one side of the fixing nut is connected to one side of the left fixing block.

[0010] The end of the screw rod located outside the right fixing hole is the adjustment end, and the end of the adjustment end away from the right fixing hole is vertically connected to the middle part of the handle.

[0011] The bearing groove includes a bearing bottom wall, the bearing bottom wall is connected to the bottom of the left fan ring part, and the movement stroke of the left fan ring part is to move toward the center of the through hole on the bearing bottom wall; The bearing bottom wall is connected to the bottom of the right fan ring portion, and the movement stroke of the right fan ring portion is to move toward the center of the through hole on the bearing bottom wall.

[0012] The bearing groove comprises a bearing side wall, one end of which is vertically connected to one end of the bearing bottom wall, and the bearing side wall is cylindrical; The bearing side wall is opposite to a side of the left fan ring away from the left clamping part, and the movement stroke of the left fan ring is to move along the bearing side wall; The bearing side wall is opposite to a side of the right fan ring portion away from the right clamping portion, and the movement stroke of the right fan ring portion is moving along the bearing side wall.

[0013] One end of the rotating column located below the through hole is connected to one end of the reduction box, and the other end of the reduction box is connected to one end of the servo motor.

[0014] The other end of the servo motor is connected to one end of the cable, the other end of the cable is connected to one end of the electric control cabinet, and the other end of the electric control cabinet is connected to the test computer.

[0015] A plurality of top holes are evenly distributed on the top of the reduction box, and bottom holes are arranged on the base at positions corresponding to the top holes, and fixing screws are inserted into the bottom holes and the top holes.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In a rotatable gear torsional stiffness detection device of the present invention, the device comprises a gear fixture, a base and a rotating column, the gear fixture comprises a left gear fixture and a right gear fixture, the left gear fixture comprises a left fan ring part and a left clamping part, the right gear fixture comprises a right fan ring part and a right clamping part, the left gear fixture and the right gear fixture are located in a bearing groove of the base, and a rotating column is inserted in the middle of the bearing groove. When used, the gear to be tested is first fixed at one end of the rotating column located above the bearing groove, and then the left clamping part and the right clamping part clamp the gear to be tested from both sides of the gear to be tested, and then the rotating column is rotated. At this time, There is friction between the left fan ring part, the right fan ring part and the bearing groove, so the friction force fixes the left fan ring part and the right fan ring part, and the left fan ring part and the right fan ring part will not rotate, so the left clamping part and the right clamping part will not rotate, and the gear to be tested clamped and fixed by the left clamping part and the right clamping part will not rotate, and the torque of the rotating column will gradually increase until it stops when the protection function threshold is triggered, and then the rotation torque when the rotating column stops rotating and the angle reading of the gear to be tested due to elastic deformation are recorded, and then the torsional stiffness of the gear to be tested when it rotates is calculated, and then it is judged whether the gear to be tested meets the standard. The advantages of the present invention also include: First point: Move the left clamping part and the right clamping part toward the gear to be tested to achieve the effect of clamping the gear to be tested; the left clamping part and the right clamping part have a certain movable space in the bearing groove. When the distance between the left clamping part and the right clamping part is close, the gear to be tested with a smaller diameter can be adapted. When the distance between the left clamping part and the right clamping part is large, the gear to be tested with a larger diameter can be adapted. Therefore, the adaptability to gears to be tested with different diameters is better; Second point: the left clamping part and the right clamping part are fixed by the friction between the left clamping part and the right clamping part and the bearing groove, without the need for an additional fixing mechanism, which simplifies the device structure, reduces the processing difficulty and production cost, and thus has high production efficiency; Therefore, the present invention has better adaptability to gears to be tested with different diameters and high production efficiency.

[0017] 2. In a rotatable gear torsional stiffness detection device of the present invention, the left gear fixture and the right gear fixture are symmetrical along the center of the bearing groove, a left fixing hole is provided on the top of the left fan ring part, and a right fixing hole is provided on the top of the right fan ring part, and screws are inserted in the right fixing hole and the left fixing hole, and a fixing nut connected to the left fixing hole is sleeved on the end of the screw outside the left fixing hole, and the end of the screw outside the right fixing hole is connected to the handle. When used, the screw is driven to rotate by rotating the handle. At this time, the fixing nut does not rotate, and the fixing nut moves along the axis of the screw. When the fixing nut moves, it drives the left gear fixture to move, thereby adjusting the distance between the left gear fixture and the right gear fixture to adapt to gears of different diameters to be tested; by rotating the screw, the effect of adjusting the distance between the left gear fixture and the right gear fixture can be achieved, so it is easy to operate. Therefore, the present invention is easy to operate.

[0018] 3. In a rotatable gear torsional stiffness detection device of the present invention, the bearing groove includes a bearing bottom wall and a bearing side wall, the bearing bottom wall is connected to the bottom of the left and right fan ring parts, and the bearing side wall is connected to the side of the left and right fan ring parts. When used, the bearing bottom wall supports the bottom of the left and right fan ring parts, and the left and right fan ring parts can move along the bearing side wall, that is, the position of the left and right fan ring parts in the bearing groove can be adjusted, so it is convenient to adjust the angle between the left clamping part, the right clamping part and the gear to be tested, so as to achieve a better clamping effect and avoid the situation that the left clamping part, the right clamping part and the gear to be tested cannot be smoothly meshed when the gear to be tested rotates to a specific angle. Therefore, the present invention has a better clamping effect on the gear to be tested.

[0019] 4. In a rotatable gear torsional stiffness detection device of the present invention, the rotating column is connected with the reduction box, servo motor, electric control cabinet, and test computer in sequence. When used, the command is first input into the test computer, and then the electric control cabinet controls the motor output torque, and then the reduction box reduces the speed and increases the torque, and then the rotating column transmits the torque to the gear to be tested; when the motor torque increases to the protection function threshold, the electric control cabinet controls the motor to stop rotating to achieve overload protection; in addition, the electric control cabinet can receive the parameters of the servo motor in operation, and then feed back to the test computer to achieve full process monitoring of the gear to be tested; through the parameters of the servo motor, the torsional stiffness of the gear to be tested can be calculated, so the detection accuracy is high. Therefore, the detection accuracy of the present invention is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 yes Figure 1 Top view of the .

[0022] Figure 3 yes Figure 1 main view.

[0023] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle base.

[0024] Figure 5 yes Figure 1 Schematic diagram of the structure of the gear fixture.

[0025] Figure 6 yes Figure 5 Schematic diagram of the structure with a shorter spacing between the left gear fixture and the right gear fixture.

[0026] Figure 7 yes Figure 5 Schematic diagram of the structure with a longer distance between the left gear fixture and the right gear fixture.

[0027] Figure 8 yes Figure 1 Schematic diagram of the structure of the middle left fixed block.

[0028] Fig. 9 yes Figure 1 Schematic diagram of the structure of the middle right fixed block.

[0029] Fig.10 yes Figure 8 Structural diagram of the middle left clamping part.

[0030] Fig.11 yes Fig. 9 Structural diagram of the middle right clamping part.

[0031] Fig.12 yes Figure 1 Schematic diagram of the structure of the reduction gearbox.

[0032] Fig.13 yes Figure 4 Schematic diagram of the structure of the bottom end hole.

[0033] Fig.14 It is a structural schematic diagram of Example 4.

[0034] In the figure: gear fixture 1, left gear fixture 11, left fan ring part 111, left clamping part 112, left fixing block 113, left fixing hole 114, right gear fixture 12, right fan ring part 121, right clamping part 122, right fixing block 123, right fixing hole 124, base 2, bearing groove 21, through hole 22, bearing bottom wall 23, bearing side wall 24, bottom end hole 25, rotating column 3, gear to be tested 4, tooth gap 41, tooth profile 42, screw 5, fixed end 51, fixing nut 52, adjustment end 53, handle 54, reduction box 6, servo motor 61, cable 62, electric control cabinet 63, test computer 64, top hole 65, fixing screw 651, shorter spacing 7, longer spacing 71. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] See also Figure 1 — Fig.14 , a rotatable gear torsional stiffness detection device, the device comprises a gear fixture 1, a base 2 and a rotating column 3; The gear fixture 1 includes a left gear fixture 11 and a right gear fixture 12, wherein the left gear fixture 11 includes a left fan ring portion 111 and a left clamping portion 112, wherein one end of the left clamping portion 112 extends into the tooth gap 41 of the gear 4 to be tested, and the other end of the left clamping portion 112 is connected to one end of the left fan ring portion 111, and the other side of the left fan ring portion 111 is connected to the bearing groove 21 of the base 2; the right gear fixture 12 includes a right fan ring portion 121 and a right clamping portion 122, wherein one end of the right clamping portion 122 extends into the tooth gap 41 of the gear 4 to be tested, and the other end of the right clamping portion 122 is connected to one end of the right fan ring portion 121, and the other side of the right fan ring portion 121 is connected to the bearing groove 21 of the base 2; A through hole 22 is provided in the middle of the bearing slot 21 , and the middle of the rotating column 3 is inserted into the through hole 22 . One end of the rotating column 3 located above the through hole 22 is fixed to the middle of the gear 4 to be tested.

[0037] The left clamping portion 112 and the right clamping portion 122 are symmetrically distributed along the center of the through hole 22 , and the left fan ring portion 111 and the right fan ring portion 121 are symmetrically distributed along the center of the through hole 22 .

[0038] A left fixing block 113 is disposed on the top of the left fan ring 111, and a left fixing hole 114 is disposed on the left fixing block 113 along the diameter direction of the base 2, the bottom of the left fixing hole 114 is higher than the top of the gear 4 to be measured, and one end of the screw 5 is inserted into the left fixing hole 114; A right fixing block 123 is provided at the top of the right fan ring 121, and a right fixing hole 124 is provided on the right fixing block 123 along the diameter direction of the base 2. The bottom of the right fixing hole 124 is higher than the top of the gear 4 to be measured, and the other end of the screw 5 is inserted into the right fixing hole 124.

[0039] One end of the screw rod 5 located outside the left fixing hole 114 is a fixing end 51 , and a fixing nut 52 is sleeved on the outer surface of the fixing end 51 , and one side of the fixing nut 52 is connected to one side of the left fixing block 113 .

[0040] One end of the screw rod 5 located outside the right fixing hole 124 is an adjustment end 53 , and one end of the adjustment end 53 away from the right fixing hole 124 is vertically connected to the middle of the handle 54 .

[0041] The bearing groove 21 includes a bearing bottom wall 23, and the bearing bottom wall 23 is connected to the bottom of the left fan ring 111. The movement stroke of the left fan ring 111 is to move on the bearing bottom wall 23 toward the center of the through hole 22; The bearing bottom wall 23 is connected to the bottom of the right sector ring portion 121 , and the movement stroke of the right sector ring portion 121 is to move toward the center of the through hole 22 on the bearing bottom wall 23 .

[0042] The bearing groove 21 includes a bearing side wall 24, one end of which is vertically connected to one end of the bearing bottom wall 23, and the bearing side wall 24 is cylindrical; The bearing side wall 24 is opposite to a side of the left fan ring portion 111 away from the left clamping portion 112, and the movement stroke of the left fan ring portion 111 is to move along the bearing side wall 24; The bearing side wall 24 is opposite to a side of the right sector ring portion 121 away from the right clamping portion 122 , and the movement stroke of the right sector ring portion 121 is moving along the bearing side wall 24 .

[0043] One end of the rotating column 3 located below the through hole 22 is connected to one end of the reduction box 6 , and the other end of the reduction box 6 is connected to one end of the servo motor 61 .

[0044] The other end of the servo motor 61 is connected to one end of a cable 62 , the other end of the cable 62 is connected to one end of an electric control cabinet 63 , and the other end of the electric control cabinet 63 is connected to a test computer 64 .

[0045] A plurality of top holes 65 are evenly distributed on the top of the reduction box 6 , and a bottom hole 25 is provided on the base 2 at a position corresponding to the top hole 65 , and fixing screws 651 are inserted into the bottom hole 25 and the top hole 65 .

[0046] The supplementary description of the present invention is as follows: The protection function threshold described in the present invention refers to: during the operation of the servo motor 61, a protection parameter is set to prevent abnormal conditions such as overload and overvoltage from causing damage to the servo motor 61; in the present invention, when the load of the servo motor 61 exceeds the protection threshold, the servo motor 61 will automatically stop to prevent the servo motor 61 from being damaged by overload. At this time, it is the maximum torque that the gear 4 to be tested is subjected to.

[0047] The rotatable type described in the present invention is: the rotation of the rotating column 3 .

[0048] Embodiment 1: See also Figure 1 — Fig.14A rotatable gear torsional stiffness detection device, the device includes a gear fixture 1, a base 2 and a rotating column 3; the gear fixture 1 includes a left gear fixture 11 and a right gear fixture 12, the left gear fixture 11 includes a left fan ring portion 111 and a left clamping portion 112, one end of the left clamping portion 112 extends into the tooth gap 41 of the gear 4 to be tested, the other end of the left clamping portion 112 is connected to one end of the left fan ring portion 111, and the other side of the left fan ring portion 111 is connected to the bearing groove 21 of the base 2; The right gear fixture 12 includes a right fan ring portion 121 and a right clamping portion 122, one end of the right clamping portion 122 extends into the tooth gap 41 of the gear 4 to be measured, the other end of the right clamping portion 122 is connected to one end of the right fan ring portion 121, and the other side of the right fan ring portion 121 is connected to the bearing groove 21 of the base 2; a through hole 22 is provided in the middle of the bearing groove 21, the middle part of the rotating column 3 is inserted into the through hole 22, and the end of the rotating column 3 located above the through hole 22 is fixed to the middle part of the gear 4 to be measured. Preferably, the end of the left clamping portion 112 close to the gear 4 to be measured has the same structure as the tooth profile 42 of the gear 4 to be measured, and the end of the right clamping portion 122 close to the gear 4 to be measured has the same structure as the tooth profile 42 of the gear 4 to be measured.

[0049] When in use, first make the distance between the left clamping part 112 and the right clamping part 122 larger than the diameter of the gear 4 to be measured, then put the gear 4 to be measured on the top of the rotating column 3, then make the gear 4 to be measured descend along the rotating column 3 to between the left clamping part 112 and the right clamping part 122, then make the left clamping part 112 move toward a tooth gap 41 of the gear 4 to be measured until the left clamping part 112 is connected with the tooth gap 41, then make the right clamping part 122 move toward a tooth gap 41 of the gear 4 to be measured until the right clamping part 122 is connected with the tooth gap 41, thereby achieving the effect of the left clamping part 112 and the right clamping part 122 clamping the gear 4 to be measured from both sides of the gear 4 to be measured; then rotate the end of the rotating column 3 located below the through hole 22, then the rotating column 3 transmits the torque to the gear 4 to be measured, and the gear 4 to be measured then transmits the torque generated by the torque to the gear 4 The rotation tendency is transmitted to the left clamping part 112 and the right clamping part 122, and then the left clamping part 112 and the right clamping part 122 transmit the rotation tendency to the left fan ring part 111 and the right fan ring part 121 respectively. However, due to the large friction between the bottom of the left fan ring part 111 and the right fan ring part 121 and the top of the bearing groove 21, the left fan ring part 111 and the right fan ring part 121 will not rotate, and the left clamping part 112 and the right clamping part 122 will not rotate, and the gear 4 to be tested located between the left clamping part 112 and the right clamping part 122 will not rotate; then the torque of the rotating column 3 continues to increase until it stops when it exceeds the protection threshold, and then the torsional stiffness of the gear 4 to be tested is calculated according to the rotational torque of the rotating column and the angle reading of the gear 4 to be tested due to elastic deformation, and then it is determined whether the gear 4 to be tested meets the standard.

[0050] Embodiment 2: The basic content is the same as that of Example 1, except that: See also Figure 1 — Fig.11 The left clamping part 112 and the right clamping part 122 are symmetrically distributed along the center of the through hole 22, and the left fan ring part 111 and the right fan ring part 121 are symmetrically distributed along the center of the through hole 22. A left fixing block 113 is provided on the top of the left fan ring part 111, and a left fixing hole 114 is provided on the left fixing block 113 along the diameter direction of the base 2, the bottom of the left fixing hole 114 is higher than the top of the gear 4 to be measured, and one end of the screw 5 is inserted into the left fixing hole 114; a right fixing block 123 is provided on the top of the right fan ring part 121, and a right fixing hole 124 is provided on the right fixing block 123 along the diameter direction of the base 2, the bottom of the right fixing hole 124 is higher than the top of the gear 4 to be measured, and the other end of the screw 5 is inserted into the right fixing hole 124. The end of the screw rod 5 outside the left fixing hole 114 is a fixing end 51, and a fixing nut 52 is sleeved on the outer surface of the fixing end 51, and one side of the fixing nut 52 is connected to one side of the left fixing block 113. The end of the screw rod 5 outside the right fixing hole 124 is an adjustment end 53, and the end of the adjustment end 53 away from the right fixing hole 124 is vertically connected to the middle of the handle 54.

[0051] When in use, firstly make the left clamping part 112 and the right clamping part 122 symmetrically distributed along the center of the through hole 22, and the left fan ring part 111 and the right fan ring part 121 symmetrically distributed along the center of the through hole 22, and then make the fixed end 51 pass through the right fixing hole 124 and the left fixing hole 114 in sequence, and then the fixed end 51 passes through the fixing nut 52; when the gear 4 to be tested is located between the left clamping part 112 and the right clamping part 122, rotate the handle 54, and then the handle 54 drives the screw 5 to rotate along its axis, at this time, the fixing nut 52 moves along the axis direction of the fixed end 51, and then the fixing nut 52 drives the left fixing hole 124 to rotate. 114 moves, and then the left fixing hole 114 drives the left fixing block 114 to move, and then the left fixing block 114 drives the left fan ring 111 to move, and then the left fan ring 111 drives the left clamping part 112 to move toward a tooth gap 41 of the gear 4 to be measured, thereby achieving the effect of adjusting the distance between the left clamping part 112 and the right clamping part 122; when the distance between the left clamping part 112 and the right clamping part 122 is a shorter distance 7, the gear 4 to be measured with a smaller diameter is adapted, and when the distance between the left clamping part 112 and the right clamping part 122 is a longer distance 71, the gear 4 to be measured with a larger diameter is adapted.

[0052] Embodiment 3: The basic content is the same as that of Example 1, except that: See also Figure 1 — Fig.11The bearing groove 21 includes a bearing bottom wall 23, which is connected to the bottom of the left fan ring 111, and the movement stroke of the left fan ring 111 is to move toward the center of the through hole 22 on the bearing bottom wall 23; the bearing bottom wall 23 is connected to the bottom of the right fan ring 121, and the movement stroke of the right fan ring 121 is to move toward the center of the through hole 22 on the bearing bottom wall 23. The bearing groove 21 includes a bearing side wall 24, one end of which is vertically connected to one end of the bearing bottom wall 23, and the bearing side wall 24 is cylindrical; the bearing side wall 24 is opposite to a side of the left fan ring 111 away from the left clamping part 112, and the movement stroke of the left fan ring 111 is to move along the bearing side wall 24; the bearing side wall 24 is opposite to a side of the right fan ring 121 away from the right clamping part 122, and the movement stroke of the right fan ring 121 is to move along the bearing side wall 24.

[0053] When in use, the bearing bottom wall 23 provides support for the left fan ring portion 111 and the right fan ring portion 121, and there is friction between the bearing bottom wall 23 and the left fan ring portion 111 and the right fan ring portion 121 to prevent the left fan ring portion 111 and the right fan ring portion 121 from rotating during detection, thereby achieving a clamping effect on the gear 4 to be tested; when the gear 4 to be tested is not tested, the left fan ring portion 111 and the right fan ring portion 121 can move along the bearing side wall 24, that is, the left fan ring portion 111 and the right fan ring portion 121 can rotate at any angle in the bearing groove 21, so the position of the left fan ring portion 111 and the right fan ring portion 121 can be adjusted to avoid the situation where the left clamping portion 112 and the right clamping portion 122 cannot smoothly engage with the tooth gap 41 when the gear 4 to be tested is rotated to a specific angle.

[0054] Embodiment 4: The basic content is the same as that of Example 1, except that: See also Figure 1 — Fig.14 The end of the rotating column 3 located below the through hole 22 is connected to one end of the reduction box 6, and the other end of the reduction box 6 is connected to one end of the servo motor 61. The other end of the servo motor 61 is connected to one end of the cable 62, and the other end of the cable 62 is connected to one end of the electric control cabinet 63, and the other end of the electric control cabinet 63 is connected to the test computer 64. A plurality of top holes 65 are evenly distributed on the top of the reduction box 6, and a bottom hole 25 is provided at a position corresponding to the top hole 65 on the base 2, and fixing screws 651 are inserted into the bottom hole 25 and the top hole 65.

[0055] When in use, first open the electric control cabinet 63 and the test computer 64, then issue a drive command on the test computer 64, then the drive command reaches the electric control cabinet 63, and then the electric control cabinet 63 drives the servo motor 61, and then the servo motor 61 transmits the torque to the reduction box 6, the reduction box 6 converts the high speed of the servo motor 61 into a low speed, and increases the torque at the same time, and then the reduction box 6 transmits the low speed and torque to the gear 4 to be tested; because the gear 4 to be tested does not rotate, the gear of the servo motor 61 cannot rotate normally. In the process of the torque of the servo motor 61 gradually increasing, when it reaches the protection function threshold, the overload protection function of the electric control cabinet 63 is triggered, so that the servo motor 61 stops rotating; then the electric control cabinet 63 receives the servo motor 61 Parameters, and then the electric control cabinet 63 transmits the parameters to the test computer 64, and then the test computer 64 records the torque of the servo motor 61 and the angle reading of the gear 4 to be tested due to elastic deformation, and then calculates the torsional stiffness of the gear 4 to be tested; to ensure the clamping effect of the left clamping part 112 and the right clamping part 122 on the gear 4 to be tested, when the left clamping part 112 and the right clamping part 122 are in contact with the gear 4 to be tested, observe the test interface torque reading of the test computer 64, and the reading is qualified when it is about 0.1 to 0.2 Newton meters; when it is necessary to fix the base 2, make the top hole 65 correspond to the bottom hole 25, and then insert the fixing screws into the top hole 65 and the bottom hole 25 in turn to fix the base 2 to the reduction box 6.

[0056] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. A rotatable gear torsional stiffness detection device, characterized in that: The device comprises a gear fixture (1), a base (2) and a rotating column (3); The gear fixture (1) comprises a left gear fixture (11) and a right gear fixture (12); the left gear fixture (11) comprises a left fan ring portion (111) and a left clamping portion (112); one end of the left clamping portion (112) extends into a tooth gap (41) of the gear to be tested (4); the other end of the left clamping portion (112) is connected to one end of the left fan ring portion (111); and the other side of the left fan ring portion (111) is connected to a bearing groove (21) of a base (2); the right gear fixture (12) comprises a right fan ring portion (121) and a right clamping portion (122); one end of the right clamping portion (122) extends into the tooth gap (41) of the gear to be tested (4); the other end of the right clamping portion (122) is connected to one end of the right fan ring portion (121); and the other side of the right fan ring portion (121) is connected to the bearing groove (21) of the base (2); A through hole (22) is provided in the middle of the bearing groove (21), the middle of the rotating column (3) is inserted into the through hole (22), and one end of the rotating column (3) located above the through hole (22) is fixed to the middle of the gear (4) to be tested.

2. A rotatable gear torsional stiffness detection device according to claim 1, characterized in that: The left clamping portion (112) and the right clamping portion (122) are symmetrically distributed along the center of the through hole (22), and the left fan ring portion (111) and the right fan ring portion (121) are symmetrically distributed along the center of the through hole (22).

3. A rotatable gear torsional stiffness detection device according to claim 2, characterized in that: A left fixing block (113) is arranged at the top of the left fan ring (111), a left fixing hole (114) is arranged on the left fixing block (113) along the diameter direction of the base (2), the bottom of the left fixing hole (114) is higher than the top of the gear (4) to be tested, and one end of a screw rod (5) is inserted into the left fixing hole (114); A right fixing block (123) is arranged at the top of the right fan ring portion (121); a right fixing hole (124) is arranged on the right fixing block (123) along the diameter direction of the base (2); the bottom of the right fixing hole (124) is higher than the top of the gear to be tested (4); and the other end of the screw rod (5) is inserted into the right fixing hole (124).

4. A rotatable gear torsional stiffness detection device according to claim 3, characterized in that: The end of the screw rod (5) located outside the left fixing hole (114) is a fixing end (51), and a fixing nut (52) is sleeved on the outer surface of the fixing end (51), and one side of the fixing nut (52) is connected to one side of the left fixing block (113).

5. A rotatable gear torsional stiffness detection device according to claim 4, characterized in that: The end of the screw rod (5) located outside the right fixing hole (124) is an adjustment end (53), and the end of the adjustment end (53) away from the right fixing hole (124) is vertically connected to the middle of the handle (54).

6. A rotatable gear torsional stiffness detection device according to claim 1, characterized in that: The bearing groove (21) comprises a bearing bottom wall (23), the bearing bottom wall (23) is connected to the bottom of the left fan ring (111), and the movement stroke of the left fan ring (111) is to move on the bearing bottom wall (23) toward the center of the through hole (22); The bearing bottom wall (23) is connected to the bottom of the right fan ring portion (121), and the movement stroke of the right fan ring portion (121) is to move on the bearing bottom wall (23) toward the center of the through hole (22).

7. A rotatable gear torsional stiffness detection device according to claim 6, characterized in that: The bearing groove (21) comprises a bearing side wall (24), one end of the bearing side wall (24) is vertically connected to one end of the bearing bottom wall (23), and the bearing side wall (24) is cylindrical; The load-bearing side wall (24) is opposite to a side of the left fan ring portion (111) away from the left clamping portion (112), and the movement stroke of the left fan ring portion (111) is to move along the load-bearing side wall (24); The bearing side wall (24) is opposite to a side of the right fan ring portion (121) away from the right clamping portion (122), and the movement stroke of the right fan ring portion (121) is to move along the bearing side wall (24).

8. A rotatable gear torsional stiffness detection device according to claim 1, characterized in that: One end of the rotating column (3) located below the through hole (22) is connected to one end of the reduction box (6), and the other end of the reduction box (6) is connected to one end of the servo motor (61).

9. A rotatable gear torsional stiffness detection device according to claim 8, characterized in that: The other end of the servo motor (61) is connected to one end of a cable (62), the other end of the cable (62) is connected to one end of an electric control cabinet (63), and the other end of the electric control cabinet (63) is connected to a test computer (64).

10. A rotatable gear torsional stiffness detection device according to claim 9, characterized in that: A plurality of top holes (65) are evenly distributed on the top of the reduction box (6), a bottom hole (25) is provided on the base (2) at a position corresponding to the top hole (65), and fixing screws (651) are inserted into the bottom hole (25) and the top hole (65).

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