Variable load motor service life testing device

Abstract

The utility model aims to provide a variable load motor service life testing device, which comprises a base and a testing assembly, the testing assembly comprises a supporting seat, a motor, a pinion, a transmission shaft, a gearwheel and a hysteresis brake, the supporting seat is arranged on the base, the motor is arranged on the supporting seat, the pinion is detachably arranged on an output shaft of the motor, and the transmission shaft is arranged on the gearwheel. The transmission shaft is rotationally arranged on the supporting seat, the large gear is detachably arranged on the transmission shaft and meshed with the small gear, the hysteresis brake is arranged on the supporting seat, and the input end of the hysteresis brake is connected with the transmission shaft. Thus, by setting the actual gear ratio of the pinion to the bull gear and simultaneously arranging the hysteresis brake to be connected with the transmission shaft, the load torque of the motor is adjustable, so that the service life test precision is improved, and the aging test of the motor can be accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of motor testing, in particular to a variable load motor life testing device. Background Art

[0002] At present, the consumer market for brushless motors is gradually expanding, and consumers are paying more and more attention to the quality of motors. The reliability and stability of motors are particularly important. If the motor life is too short or prone to failure, it will affect the reliability and stability of the entire motor system. Therefore, it is urgent to develop a life test device that simulates the actual working conditions of the motor.

[0003] At present, the motor life test is mainly carried out by installing blades to simulate the load operation. However, this method of installing blades to test cannot determine the specific value of the load, and the load value cannot be accurately determined, resulting in a long life test time. In view of this, in order to solve the above technical problems, a variable load motor life test device of the present application is proposed. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a variable load motor life test device with adjustable load torque, thereby improving the life test accuracy and shortening the test time.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A variable load motor life test device, comprising:

[0007] a base; and

[0008] A test assembly, the test assembly includes a support seat, a motor, a pinion, a transmission shaft, a large gear and a hysteresis brake, the support seat is arranged on the base, the motor is arranged on the support seat, the pinion is detachably arranged on the output shaft of the motor, the transmission shaft is rotatably arranged on the support seat, the large gear is detachably arranged on the transmission shaft, and the large gear is meshed with the pinion, the hysteresis brake is arranged on the support seat, and the input end of the hysteresis brake is connected to the transmission shaft.

[0009] Optionally, the base includes a bottom plate, a top plate and a plurality of support columns, one end of each of the support columns is disposed on the bottom plate, the other end of each of the support columns is connected to the top plate, and the support seat is disposed on the top plate.

[0010] Optionally, the support base includes a box body and an adjustment block, the box body is arranged on the top plate, the adjustment block is adjustably arranged on the box body, the motor is arranged on the adjustment block, and the transmission shaft is rotatably arranged on the box body.

[0011] Optionally, the transmission shaft includes a shaft body and a fixed disk, the fixed disk is coaxially arranged on the shaft body, the large gear is sleeved on the shaft body, and the large gear is in contact with the fixed disk.

[0012] Optionally, the support seat also includes a box cover, which is arranged on a side surface of the box body away from the motor, one end of the shaft is rotatably connected to the box body, and the other end of the shaft is passed through the box cover, and the large gear and the small gear are both located between the box cover and the box body.

[0013] Optionally, the support seat further comprises a sleeve, the sleeve is arranged on a side surface of the box cover away from the box body, and the hysteresis brake is arranged on an end of the sleeve away from the box cover.

[0014] Optionally, the transmission shaft further includes a coupling, and the coupling is respectively connected to the shaft body and an input end of the hysteresis brake.

[0015] Optionally, a clearance hole is provided on the sleeve, and the clearance hole is aligned with the coupling.

[0016] Optionally, an adjustment groove is formed between the box body and the box cover, and the adjustment block is slidably disposed in the adjustment groove along the radial direction of the shaft body.

[0017] Optionally, the fixing plate and the shaft body are an integrally formed structure.

[0018] Compared with the prior art, the utility model has at least the following advantages:

[0019] The variable load motor life test device of the utility model comprises a base and a test assembly, wherein the test assembly comprises a support base, a motor, a pinion, a transmission shaft, a gearwheel and a hysteresis brake, wherein the support base is arranged on the base, the motor is arranged on the support base, the pinion is detachably arranged on the output shaft of the motor, the transmission shaft is rotatably arranged on the support base, the gearwheel is detachably arranged on the transmission shaft, and the gearwheel meshes with the pinion, the hysteresis brake is arranged on the support base, and the input end of the hysteresis brake is connected to the transmission shaft. Thus, by setting the actual tooth ratio of the pinion and the gearwheel, and setting the hysteresis brake to be connected to the transmission shaft, the motor load torque is adjustable, thereby improving the accuracy of the life test, and being able to accelerate the motor aging test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a variable load motor life test device according to one embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of a test assembly according to one embodiment of the utility model;

[0023] Figure 3 for Figure 2 A schematic diagram of a portion of the structure of the test assembly shown;

[0024] Figure 4 for Figure 2 A schematic diagram of the partial structure of the test assembly from another angle is shown.

[0025] Description of reference numerals:

[0026] 10. Variable load motor life test device; 100. Base; 200. Test assembly; 210. Support seat; 220. Motor; 230. Pinion; 240. Transmission shaft; 250. Gear; 260. Hysteresis brake; 110. Bottom plate; 120. Top plate; 130. Support column; 211. Box body; 212. Adjustment block; 241. Shaft body; 242. Fixed plate; 213. Box cover; 214. Sleeve; 243. Coupling; 2141. Avoidance hole. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0028] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings show preferred embodiments of the present invention.

[0032] like Figure 1 As shown, a variable load motor life test device 10 includes a base 100 and a test assembly 200, wherein the test assembly 200 includes a support base 210, a motor 220, a pinion 230, a transmission shaft 240, a large gear 250 and a hysteresis brake 260. The support base 210 is arranged on the base 100, the motor 220 is arranged on the support base 210, the pinion 230 is detachably arranged on the output shaft of the motor 220, the transmission shaft 240 is rotatably arranged on the support base 210, the large gear 250 is detachably arranged on the transmission shaft 240, and the large gear 250 is meshed with the pinion 230, the hysteresis brake 260 is arranged on the support base 210, and the input end of the hysteresis brake 260 is connected to the transmission shaft 240.

[0033] It should be noted that the support seat 210 is fixedly mounted on the base 100 by screws. The transmission shaft 240 is mounted on the support seat 210 through a bearing so that it can rotate relative to the support seat 210. The large gear 250 is fixedly mounted on the transmission shaft 240, the small gear 230 is mounted on the output shaft of the motor 220, and the small gear 230 is meshed with the large gear 250. The hysteresis brake 260 is fixedly mounted on the support seat 210, and the input end of the hysteresis brake 260 is connected to the transmission shaft 240. In this way, by replacing the small gear 230 and the large gear 250, the transmission ratio between the output shaft of the motor 220 and the transmission shaft 240 can be changed. For example, the small gear 230 can be replaced to a minimum of 10 teeth and a maximum of 25 teeth, so that the reduction ratio can be 1:3 to 1:8. The large gear 250 can have a minimum of 75 teeth and a maximum of 90 teeth, so that the speed ratio can be controlled. Furthermore, by applying a controllable torque to the transmission shaft 240 through the hysteresis brake 260 , the load size of the motor 220 can be accurately controlled, thereby accelerating the aging test of the motor 220 .

[0034] like Figure 1 As shown, in one embodiment, the base 100 includes a bottom plate 110, a top plate 120 and a plurality of support columns 130, one end of each support column 130 is disposed on the bottom plate 110, the other end of each support column 130 is connected to the top plate 120, and the support seat 210 is disposed on the top plate 120.

[0035] It should be noted that the bottom plate 110 is used to be fixed on the ground, and the support column 130 is fixedly installed with the bottom plate 110 and the top plate 120 by screws. In this way, the top plate 120 is separated from the bottom plate 110 by the support column 130, which can prevent vibration transmission and interference with the test when the motor 220 is tested.

[0036] like Figure 1 and Figure 2 As shown, in one embodiment, the support base 210 includes a box body 211 and an adjustment block 212, the box body 211 is set on the top plate 120, the adjustment block 212 is adjustably set on the box body 211, the motor 220 is set on the adjustment block 212, and the transmission shaft 240 is rotatably set on the box body 211.

[0037] It should be noted that the position of the adjustment block 212 relative to the housing 211 is adjustable. For example, the adjustment block 212 can be slidably mounted on the housing 211, and the adjustment block 212 is fixed to the housing 211 by screws. The motor 220 is mounted on the adjustment block 212 by screws, and the transmission shaft 240 is mounted on the housing 211 by bearings. In this way, the distance between the output shaft of the motor 220 and the transmission shaft 240 is adjustable, so that the pinion 230 and the large gear 250 with different numbers of teeth can be replaced according to actual needs.

[0038] like Figure 3As shown, in one embodiment, the transmission shaft 240 includes a shaft body 241 and a fixed plate 242 . The fixed plate 242 is coaxially disposed on the shaft body 241 . The large gear 250 is sleeved on the shaft body 241 , and the large gear 250 is in contact with the fixed plate 242 .

[0039] It should be noted that, in order to ensure that the large gear 250 and the transmission shaft 240 are reliably fixed together, the transmission shaft 240 is set to the above structure, wherein the fixed plate 242 and the shaft body 241 are coaxially installed. In one embodiment, the fixed plate 242 and the shaft body 241 are an integrally formed structure, so that the fixed plate 242 and the shaft body 241 have sufficient structural strength. The large gear 250 is sleeved on the shaft body 241, and then the large gear 250 and the fixed plate 242 are locked and fixed by screws.

[0040] like Figure 4 As shown, in one embodiment, the support seat 210 also includes a box cover 213, which is arranged on a side surface of the box body 211 away from the motor 220, one end of the shaft 241 is rotatably connected to the box body 211, and the other end of the shaft 241 is passed through the box cover 213, and the large gear 250 and the small gear 230 are both located between the box cover 213 and the box body 211.

[0041] It should be noted that in order to reliably rotatably mount the shaft 241 on the support base 210, the above structure is provided. Specifically, the box cover 213 is mounted on the box body 211 by screws, so that there is a certain distance between the box cover 213 and the box body 211. One end of the shaft 241 is mounted on the box body 211 by a bearing, and the other end of the shaft 241 is mounted on the box cover 213 by a bearing. The large gear 250 and the small gear 230 are both located between the box cover 213 and the box body 211. In this way, the shaft 241 can stably rotate relative to the support base 210.

[0042] like Figure 1 As shown, in one embodiment, the support seat 210 further includes a sleeve 214 , which is disposed on a side surface of the box cover 213 away from the box body 211 , and the hysteresis brake 260 is disposed on an end of the sleeve 214 away from the box cover 213 .

[0043] It should be noted that, in order to reliably fix the hysteresis brake 260, the sleeve 214 is installed on the box cover 213 by screws, and then the hysteresis brake 260 is installed on the sleeve 214. The shaft 241 passes through the sleeve 214 to be connected to the input end of the hysteresis brake 260.

[0044] like Figure 4As shown, in one embodiment, the transmission shaft 240 further includes a coupling 243, and the coupling 243 is respectively connected to the shaft body 241 and the input end of the hysteresis brake 260. In this way, it is ensured that the input end of the hysteresis brake 260 is reliably fixed to the shaft body 241.

[0045] like Figure 4 As shown, in one embodiment, a clearance hole 2141 is provided on the sleeve 214, and the clearance hole 2141 is aligned with the coupling 243. In this way, the clearance hole 2141 facilitates the fixing of the coupling 243 and the hysteresis brake 260 / the shaft body 241.

[0046] like Figure 2 As shown, in one embodiment, an adjustment groove is formed between the box body 211 and the box cover 213 , and the adjustment block 212 is slidably disposed in the adjustment groove along the radial direction of the shaft body 241 .

[0047] In this way, through the formed adjustment groove, the adjustment block 212 can only slide laterally along the adjustment groove, so that the adjustment block 212 can be conveniently and quickly fixed on the box body 211, so that the small gear 230 and the large gear 250 can be reliably engaged.

[0048] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A variable load motor life test device, characterized in that: include: Pedestal; and A test assembly, the test assembly includes a support seat, a motor, a pinion, a transmission shaft, a large gear and a hysteresis brake, the support seat is arranged on the base, the motor is arranged on the support seat, the pinion is detachably arranged on the output shaft of the motor, the transmission shaft is rotatably arranged on the support seat, the large gear is detachably arranged on the transmission shaft, and the large gear is meshed with the pinion, the hysteresis brake is arranged on the support seat, and the input end of the hysteresis brake is connected to the transmission shaft.

2. The variable load motor life test device according to claim 1, characterized in that: The base includes a bottom plate, a top plate and a plurality of support columns, one end of each of the support columns is arranged on the bottom plate, the other end of each of the support columns is connected to the top plate, and the support seat is arranged on the top plate.

3. The variable load motor life test device according to claim 2, characterized in that: The support seat includes a box body and an adjustment block, the box body is arranged on the top plate, the adjustment block is adjustably arranged on the box body, the motor is arranged on the adjustment block, and the transmission shaft is rotatably arranged on the box body.

4. The variable load motor life test device according to claim 3, characterized in that: The transmission shaft comprises a shaft body and a fixed disk. The fixed disk is coaxially arranged on the shaft body. The large gear is sleeved on the shaft body, and the large gear is in contact with the fixed disk.

5. The variable load motor life test device according to claim 4, characterized in that: The support seat also includes a box cover, which is arranged on a side surface of the box body away from the motor. One end of the shaft is rotatably connected to the box body, and the other end of the shaft is passed through the box cover. The large gear and the small gear are both located between the box cover and the box body.

6. The variable load motor life test device according to claim 5, characterized in that: The support seat also includes a sleeve, which is arranged on a side surface of the box cover away from the box body, and the hysteresis brake is arranged on an end of the sleeve away from the box cover.

7. The variable load motor life test device according to claim 6, characterized in that: The transmission shaft further comprises a coupling, and the coupling is respectively connected to the shaft body and the input end of the hysteresis brake.

8. The variable load motor life test device according to claim 7, characterized in that: The sleeve is provided with an air avoidance hole, and the air avoidance hole is aligned with the coupling.

9. The variable load motor life test device according to claim 5, characterized in that: An adjustment groove is formed between the box body and the box cover, and the adjustment block is slidably disposed in the adjustment groove along the radial direction of the shaft body.

10. The variable load motor life test device according to claim 4, characterized in that: The fixing plate and the shaft body are an integrally formed structure.

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