Motor static friction torque detection device

Abstract

The utility model discloses a motor static friction torque detection device, and relates to the technical field of motor detection, the motor static friction torque detection device comprises a to-be-detected motor, the movable end of the to-be-detected motor is sleeved with a hanging rail assembly, the hanging rail assembly comprises a slide rail, a sleeve disc, a plurality of scale lines and a straight slide groove, the sleeve disc is fixedly connected to the right side of the slide rail, and the straight slide groove is fixedly connected to the right side of the sleeve disc. The hanging rail assembly is connected to the movable end of a motor to be tested in a sleeving mode through a sleeve disc, the multiple scale lines are arranged at the positions, close to the upper end and the lower end, of the front side wall of the sliding rail respectively, the straight sliding groove is formed in the middle of the sliding rail, a sliding counterweight assembly is slidably connected into the straight sliding groove in a limited mode, and the sliding counterweight assembly comprises a total balancing weight. The rear side of the total balancing weight is fixedly connected with a fixing assembly. According to the utility model, the static friction force is adjusted in a sliding manner, and the manner is a stepless adjustment manner which is different from the mounting of a counterweight, so that the torque of the static friction force of the motor is measured and calculated more accurately.

Description

Technical Field

[0001] The utility model relates to the technical field of motor detection, in particular to a motor static friction torque detection device. Background Art

[0002] The static friction torque of a motor is a key indicator of motor performance. It can not only understand the size of the static friction torque to evaluate the motor's ability to overcome static resistance during the initial startup phase, but also provide a basis for improving the motor's design and improving the motor's consistency and stability by measuring the static friction torque.

[0003] Authorization publication number CN217980614U discloses a static friction torque detection of a motor for a small actuator. By setting a support part in conjunction with a drive part, the drive part can be restricted when used in combination to allow the drive part to maintain better usage needs. At the same time, the stabilizing part and the support part can allow the device to maintain good stability when detecting the electric actuator to meet the needs of use.

[0004] However, this detection device is realized by disassembling the counterweight assembly when changing the load, which results in the minimum value of the load change being based on the weight change of a single load, while the sudden change of the weight of the counterweight assembly cannot be achieved. This results in either setting the counterweight assembly small enough to meet its accuracy, which will inevitably make the disassembly and assembly of the load too complicated, or sacrificing the accuracy of the measurement to meet the convenience of load change. Based on the above viewpoints, technical personnel in this field have proposed a motor static friction torque detection device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a motor static friction torque detection device is proposed. The motor static friction torque detection device designed utilizes sliding to adjust the static friction force, which is a stepless adjustment method. Different from installing a counterweight, it can more accurately measure the static friction torque of the motor.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A motor static friction torque detection device comprises a motor to be tested, a hanging rail assembly is sleeved on the movable end of the motor to be tested, the hanging rail assembly comprises a slide rail, a sleeve disc, a plurality of scale lines and a straight slide groove, the sleeve disc is fixedly connected to the right side of the slide rail, the hanging rail assembly is sleeved on the movable end of the motor to be tested through the sleeve disc, the plurality of scale lines are respectively arranged at the upper end and the lower end of the front side wall of the slide rail, and the straight slide groove is opened at the middle position of the slide rail;

[0008] A sliding counterweight assembly is connected in a limited sliding manner in the straight sliding groove, and the sliding counterweight assembly includes a total counterweight block. A fixed assembly is fixedly connected to the rear side of the total counterweight block, and a plurality of threaded holes distributed in a circular array are opened on the front side of the total counterweight block. A counterweight screw is threadedly connected in each threaded hole, and a scale pointer is fixedly connected to the upper and lower side walls of the total counterweight block.

[0009] Through the above technical scheme, the detection device uses sliding to adjust the static friction force loaded on the motor to be tested. When adjustment is needed, it is only necessary to slide the sliding counterweight assembly along the direction of the straight slide groove, which is very convenient. The static friction force is adjusted by sliding. This method is a stepless adjustment method. Different from installing counterweights, it is more accurate in measuring the static friction torque of the motor. During measurement, the sliding counterweight assembly is repeatedly pulled outward until the movable end of the motor to be tested rotates and cannot drive the hanging rail assembly to rotate. The counterweight at this time is the maximum static friction torque of the motor to be tested. The scale line is then read by the scale pointer to calculate the static friction torque of the motor. By removing or adding counterweight screws, the measurement range of the static friction torque of the motor can be changed, and the scale lines at different positions can be read to obtain the maximum static friction torque of the motor, making the measurement more convenient and having a wider range of applications.

[0010] Further, the fixing assembly includes a contact, a slider, two claws, a return spring, a mounting plate, a mounting cover and two limit slots, the slider is fixed to the front side of the contact, one end of the return spring is fixed to the front side of the slider, the mounting plate is fixed to the other end of the return spring, the front side wall of the mounting plate is bolted to the inside of the mounting cover, the upper and lower sides of the slider are provided with oblique sliding grooves, the two claws are limitedly slidably connected in the oblique sliding grooves, and the upper and lower side walls of the mounting cover are provided with limit slots, and the two claws are simultaneously limitedly slidably connected in the limit slots;

[0011] Through the above technical solution, by pressing the contact, the slider is brought close to the mounting plate. At this time, the reset spring is in a compressed state, and the claw slides along the bottom of the inclined slide groove driven by the slider. At this time, the claw is no longer stuck in the upper and lower side walls of the slide rail, and the sliding counterweight assembly can be easily clamped. After adjusting the position of the load weight, release the contact, and the reset spring drives the slider to reset. At this time, the claw slides to the top of the claw again, and the claw is stuck in the upper and lower side walls of the slide rail again, so the sliding counterweight assembly can be fixed in the slide rail again, and the operation is very convenient.

[0012] Furthermore, two side walls of the slider are fixedly connected with transmission external teeth;

[0013] Through the above technical solution, the transmission outer teeth are used to drive the transmission gear to rotate.

[0014] Furthermore, mounting brackets are fixedly connected to the two side walls of the mounting cover, and transmission gears are rotatably connected to the two mounting brackets at positions close to the central axis of the mounting cover, and the two transmission gears are respectively meshed with two transmission external teeth, and driven racks are limitedly slidably connected to the two mounting brackets at positions close to the outer sides, and the two driven racks are respectively meshed with the two transmission gears;

[0015] Through the above technical solution, while pressing the contact, the transmission outer teeth drive the transmission gear to rotate, and then drive the driven rack to retreat, so that the fixed magnet drives the principle back magnet, and the fixed magnet is no longer attracted to the back magnet. When the contact is released, the slider is reset under the drive of the spring. When the slider is reset, the transmission gear reverses and drives the driven rack to re-attract the fixed magnet to the back magnet.

[0016] Furthermore, the front side walls of the two driven racks are fixedly connected with fixed magnets, and back magnets cooperating with the fixed magnets are installed on the rear side walls of the slide rail and on the upper and lower sides of the straight slide groove;

[0017] Through the above technical solution, by attracting the fixed magnet to the rear side of the back magnet, it is ensured that when the motor to be tested drives the hanging rail assembly to rotate, the sliding counterweight assembly will not loosen, thereby improving the accuracy of the measurement.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, when the load needs to be adjusted, it is only necessary to slide the sliding counterweight assembly along the direction of the straight slide groove, which is very convenient, and the static friction force is adjusted by sliding. This method is a stepless adjustment method, which is different from installing a counterweight, and its calculation of the static friction torque of the motor is more accurate.

[0020] 2. In the utility model, the measuring range of the static friction torque of the motor can be changed by removing or adding a weight screw, and the scale lines at different positions can be read to obtain the maximum static friction torque of the motor, making the measurement more convenient and the application scope more extensive.

[0021] 3. In the utility model, the contact is pressed to drive the claw to no longer be stuck on the upper and lower side walls of the slide rail, and at the same time, the transmission outer teeth drive the transmission gear to rotate, and then drive the driven rack to retreat, so that the fixed magnet drives the principle back magnet. When the pressed contact is released, the slider is actively reset, so that the claw is re-stuck on the upper and lower side walls of the slide rail, and the fixed magnet is re-attracted on the back magnet, which not only ensures that the sliding counterweight assembly will not loosen, thereby improving the accuracy of measurement, but also is very convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1This is an overall diagram of a motor static friction torque detection device proposed by the utility model;

[0023] Figure 2 This is an axonometric diagram of a hanging rail assembly, a sliding counterweight assembly and a fixed assembly in a motor static friction torque detection device proposed by the utility model;

[0024] Figure 3 It is a schematic diagram of a sliding weight component and a fixed component in a motor static friction torque detection device proposed by the utility model;

[0025] Figure 4 The utility model discloses an exploded view of a fixed component in a motor static friction torque detection device.

[0026] Legend:

[0027] 1. Motor to be tested; 2. Rail assembly; 3. Sliding weight assembly; 4. Fixed assembly;

[0028] 21. Slide rail; 22. Disc; 23. Scale line; 24. Straight slide groove; 25. Back magnet;

[0029] 31. Total counterweight block; 32. Threaded hole; 33. Counterweight screw; 34. Scale pointer;

[0030] 41. Contact; 42. Slider; 43. Inclined slide groove; 44. Claw; 45. Transmission outer tooth; 46. Transmission gear; 47. Driven rack; 48. Fixed magnet; 49. Mounting cover; 410. Limiting groove; 411. Mounting frame; 412. Reset spring; 413. Mounting plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Example:

[0033] Reference Figure 1-4An embodiment of the utility model provides a motor static friction torque detection device, including a motor to be tested 1, a hanging rail assembly 2 is sleeved on the movable end of the motor to be tested 1, the hanging rail assembly 2 includes a slide rail 21, a sleeve disc 22, a plurality of scale lines 23 and a straight slide groove 24, the sleeve disc 22 is fixedly connected to the right side of the slide rail 21, the hanging rail assembly 2 is sleeved on the movable end of the motor to be tested 1 through the sleeve disc 22, the plurality of scale lines 23 are respectively arranged on the front side wall of the slide rail 21 near the upper end and the lower end, and the straight slide groove 24 is opened in the middle position of the slide rail 21.

[0034] A sliding counterweight assembly 3 is connected in a limited sliding manner in the straight slide groove 24. The sliding counterweight assembly 3 includes a total counterweight block 31. A fixed assembly 4 is fixedly connected to the rear side of the total counterweight block 31. A plurality of threaded holes 32 distributed in a circumferential array are provided on the front side of the total counterweight block 31. A counterweight screw 33 is threadedly connected in each threaded hole 32. A scale pointer 34 is fixedly connected to the upper and lower side walls of the total counterweight block 31. The detection device adjusts the static friction force loaded on the motor 1 to be tested by sliding. When adjustment is required, it is only necessary to slide the sliding counterweight assembly 3 along the direction of the straight slide groove 24, which is very convenient. The static friction force is adjusted by sliding. This method is a This stepless adjustment method is different from installing a counterweight, and its calculation of the static friction torque of the motor is more accurate. During measurement, the sliding counterweight assembly 3 is repeatedly pulled outward until the movable end of the motor 1 to be measured rotates and cannot drive the hanging rail assembly 2 to rotate. The counterweight at this time is the maximum static friction torque of the motor 1 to be measured. Subsequently, the scale of the scale line 23 is read through the scale pointer 34 to calculate the static friction torque of the motor. By removing or adding a counterweight screw 33, the measurement range of the static friction torque of the motor can be changed, and the scale lines 23 at different positions can be read to obtain the maximum static friction torque of the motor, making the measurement more convenient and the scope of application more extensive.

[0035] The fixing assembly 4 includes a contact 41, a slider 42, two claws 44, a return spring 412, a mounting plate 413, a mounting cover 49 and two limit grooves 410. The slider 42 is fixed to the front side of the contact 41, one end of the return spring 412 is fixed to the front side of the slider 42, the mounting plate 413 is fixed to the other end of the return spring 412, the front side wall of the mounting plate 413 is bolted to the inside of the mounting cover 49, the upper and lower sides of the slider 42 are provided with oblique grooves 43, the two claws 44 are limitedly slidably connected in the oblique grooves 43, and the upper and lower side walls of the mounting cover 49 are provided with limit grooves 410, and the two claws 44 are simultaneously limitedly slidably connected in the limit grooves. By pressing the contact 41 in the positioning groove 410, the slider 42 is close to the mounting plate 413. At this time, the return spring 412 is in a compressed state, and the claw 44 slides along the bottom of the inclined groove 43 driven by the slider 42. At this time, the claw 44 is no longer stuck in the upper and lower side walls of the slide rail 21, and the sliding counterweight assembly 3 can be easily pulled. After adjusting the position of the load weight, release the contact 41, and the return spring 412 drives the slider 42 to reset. At this time, the claw 44 slides to the top of the claw 44 again, and the claw 44 is stuck in the upper and lower side walls of the slide rail 21 again, so that the sliding counterweight assembly 3 can be fixed in the slide rail 21 again, and the operation is very convenient.

[0036] The two side walls of the slider 42 are fixedly connected with transmission external teeth 45, and the transmission external teeth 45 are used to drive the transmission gear 46 to rotate. The two side walls of the mounting cover 49 are fixedly connected with mounting frames 411. The insides of the two mounting frames 411 are rotatably connected with transmission gears 46 near the central axis of the mounting cover 49. The two transmission gears 46 are respectively meshed with the two transmission external teeth 45. The insides of the two mounting frames 411 are limitedly slidably connected with driven racks 47 near the outer sides. The two driven racks 47 are respectively meshed with the two transmission gears 46. When the contact 41 is pressed, the transmission outer teeth 45 drive the transmission gear 46 to rotate, thereby driving the driven rack 47 to retreat, so that the fixed magnet 48 drives the principle back magnet 25, and the fixed magnet 48 is no longer attracted to the back magnet 25. When the contact 41 is released, the slider 42 is reset under the drive of the spring. When the slider 42 is reset, the transmission gear 46 reverses and drives the driven rack 47 to re-attract the fixed magnet 48 to the back magnet 25. The front side walls of the two driven racks 47 are fixedly connected with the fixed magnet 48, and the back magnets 25 that cooperate with the fixed magnet 48 are installed on the rear side wall of the slide rail 21 and on the upper and lower sides of the straight slide groove 24. By attracting the fixed magnet 48 to the rear side of the back magnet 25, it is ensured that when the motor 1 to be tested drives the hanging rail assembly 2 to rotate, the sliding counterweight assembly 3 will not loosen, thereby improving the measurement accuracy.

[0037] Working principle: The detection device uses sliding to adjust the static friction force loaded on the motor 1 to be tested. When adjustment is needed, it is only necessary to slide the sliding counterweight assembly 3 along the direction of the straight slide groove 24, which is very convenient. The static friction force is adjusted by sliding. This method is a stepless adjustment method. Different from installing counterweights, it is more accurate in measuring the static friction torque of the motor. When measuring, the sliding counterweight assembly 3 is repeatedly pulled outward until the movable end of the motor 1 to be tested rotates and cannot drive the hanging rail assembly 2 to rotate. At this time, the counterweight is the motor to be tested. The maximum static friction torque of the motor 1 is measured, and then the scale of the scale line 23 is read by the scale pointer 34 to calculate the static friction torque of the motor. By removing or adding the weight screw 33, the measurement range of the static friction torque of the motor can be changed, and the scale lines 23 at different positions can be read to obtain the maximum static friction torque of the motor, which makes the measurement more convenient and has a wider range of applications. By pressing the contact 41, the slider 42 is close to the mounting plate 413. At this time, the reset spring 412 is in a compressed state, and the claw 44 is driven by the slider 42. The slider 42 is reset by the reset spring 412, and the claw 44 slides to the top of the claw 44 again, and the claw 44 is re-engaged in the upper and lower side walls of the slide rail 21, so that the sliding counterweight assembly 3 can be fixed in the slide rail 21 again, which is very convenient to operate. While pressing the contact 41, the transmission outer tooth 45 drives the transmission gear 46 to rotate, and the slider 42 is reset by the reset spring 412. The driven rack 47 is driven to retreat, thereby driving the fixed magnet 48 to drive the back magnet 25, and the fixed magnet 48 is no longer attracted to the back magnet 25. When the contact 41 is released, the slider 42 is reset under the drive of the spring. When the slider 42 is reset, the transmission gear 46 reverses and drives the driven rack 47 to re-attract the fixed magnet 48 to the back magnet 25. By attracting the fixed magnet 48 to the back side of the back magnet 25, it is ensured that when the motor 1 to be tested drives the hanging rail assembly 2 to rotate, the sliding counterweight assembly 3 will not get loose, thereby improving the measurement accuracy.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A motor static friction torque detection device, comprising a motor to be tested (1), characterized in that: A hanging rail assembly (2) is sleeved on the movable end of the motor to be tested (1), and the hanging rail assembly (2) comprises a slide rail (21), a sleeve disc (22), a plurality of scale lines (23) and a straight slide groove (24). The sleeve disc (22) is fixedly connected to the right side of the slide rail (21), and the hanging rail assembly (2) is sleeved on the movable end of the motor to be tested (1) through the sleeve disc (22). The plurality of scale lines (23) are respectively arranged at the upper end and the lower end of the front side wall of the slide rail (21), and the straight slide groove (24) is opened at the middle position of the slide rail (21); A sliding counterweight assembly (3) is connected in a limited sliding manner in the straight slide groove (24), and the sliding counterweight assembly (3) comprises a total counterweight block (31). A fixing assembly (4) is fixedly connected to the rear side of the total counterweight block (31). A plurality of threaded holes (32) distributed in a circular array are provided on the front side of the total counterweight block (31), and a counterweight screw (33) is threadedly connected in each of the threaded holes (32). A scale pointer (34) is fixedly connected to the upper and lower side walls of the total counterweight block (31).

2. The motor static friction torque detection device according to claim 1, characterized in that: The fixing assembly (4) comprises a contact (41), a slider (42), two clamping claws (44), a return spring (412), a mounting plate (413), a mounting cover (49) and two limit grooves (410), wherein the slider (42) is fixed to the front side of the contact (41), one end of the return spring (412) is fixed to the front side of the slider (42), the mounting plate (413) is fixed to the other end of the return spring (412), the front side wall of the mounting plate (413) is bolted to the inside of the mounting cover (49), the upper and lower sides of the slider (42) are provided with inclined sliding grooves (43), the two clamping claws (44) are limitedly slidably connected in the inclined sliding grooves (43), and the upper and lower side walls of the mounting cover (49) are provided with limit grooves (410), and the two clamping claws (44) are simultaneously limitedly slidably connected in the limit grooves (410).

3. A motor static friction torque detection device according to claim 2, characterized in that: Transmission external teeth (45) are fixedly connected to both side walls of the sliding block (42).

4. A motor static friction torque detection device according to claim 3, characterized in that: The two side walls of the mounting cover (49) are fixedly connected with mounting frames (411); the insides of the two mounting frames (411) are rotatably connected with transmission gears (46) near the central axis of the mounting cover (49); the two transmission gears (46) are respectively meshed with two transmission external teeth (45); the insides of the two mounting frames (411) are limitedly slidably connected with driven racks (47) near the outer sides; the two driven racks (47) are respectively meshed with the two transmission gears (46).

5. A motor static friction torque detection device according to claim 4, characterized in that: The front side walls of the two driven racks (47) are fixedly connected with fixed magnets (48), and back magnets (25) cooperating with the fixed magnets (48) are installed on the rear side walls of the slide rail (21) and on the upper and lower sides of the straight slide groove (24).

Images