Motor loading test device

Abstract

The utility model relates to the technical field of motor detection equipment, and provides a motor loading test device which comprises a substrate and a clamping detection device. The clamping detection device comprises a clamping cylinder, a mounting seat, a shaft sleeve head, a first elastic component, a driving sliding block, a second elastic component and a sliding block driving assembly, the clamping cylinder is provided with a flaring end for a rotating shaft of the motor to slide in, and the clamping cylinder comprises a flange part; the mounting base is movably mounted on the base plate, the shaft sleeve head sleeves the clamping cylinder, the two ends of the first elastic component abut against the shaft sleeve head and the flange portion respectively, the driving sliding block enables the shaft sleeve head to move towards the flange portion, and the two ends of the second elastic component abut against the driving sliding block and the inner wall of the mounting base respectively. The sliding block driving assembly can drive the driving sliding block to move towards the flange part, a first preset gap is reserved between the driving sliding block and the shaft sleeve head, and a second preset gap is reserved between the flange part and the inner wall of the mounting seat, so that the mounting seat and the driving sliding block are not in contact with the clamping cylinder and the shaft sleeve head during detection, and the detected data value is more accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor detection equipment's technical field especially is a kind of motor loading test device. BACKGROUND

[0002] At present, motor will test its performance before factory, including motor torque test, can use torque sensor and motor's rotating shaft to be connected to test, traditional detection equipment, including shaft clamping device, it includes shaft clamping seat and the shaft clamping device for clamping motor rotating shaft in the shaft clamping seat and one end, the other end of the shaft clamping device is connected with torque sensor, however, since shaft clamping device rotates along with motor rotating shaft, shaft clamping device rotates and produces friction between shaft clamping seat, influence test accuracy. SUMMARY

[0003] The utility model discloses a motor loading test device to solve the technical problem that the data measured by the motor in the prior art cannot be accurately ensured.

[0004] To achieve the above object, the utility model adopts the technical scheme of providing a motor loading test device, which comprises a base plate and a clamping detection device for connecting with a motor. The clamping detection device comprises a clamping cylinder for connecting a tester, the clamping cylinder having an expanded end with a tapered outer wall for sliding in and out of the rotating shaft of the motor, the clamping cylinder comprising a flange portion formed on the outer wall thereof, the flange portion extending along the circumference of the clamping cylinder; a mounting seat movably mounted on the base plate along the axial direction of the clamping cylinder, the mounting seat having an inner cavity, the clamping cylinder being arranged in the inner cavity and the two ends of the clamping cylinder extending out of the mounting seat; a shaft sleeve head for contracting and expanding the expanded end, the shaft sleeve head being sleeved on the clamping cylinder and movable along the axial direction of the clamping cylinder; a first elastic member sleeved on the clamping cylinder and abutting against the shaft sleeve head and the flange portion at both ends; a driving sliding block abutting against the shaft sleeve head and moving the shaft sleeve head towards the flange portion, the driving sliding block being movably arranged in the inner cavity along the axial direction of the clamping cylinder; a second elastic member arranged in the inner cavity and abutting against the driving sliding block and the inner wall of the mounting seat at both ends; and a sliding block driving assembly capable of driving the driving sliding block to move towards the flange portion; a first predetermined gap is left between the driving sliding block and the shaft sleeve head after the expanded end is contracted, and a second predetermined gap is left between the flange portion and the inner wall of the mounting seat after the expanded end is contracted.

[0005] In some embodiments, the shaft sleeve head comprises a pressing portion for pressing the flared end of the clamping cylinder and a connecting portion connected with the pressing portion, the connecting portion gradually increases in diameter from the flared end to the flange portion; the driving slider has a concave cavity, the bottom of the concave cavity is provided with a through hole for the pressing portion to pass out, the diameter of the through hole is larger than the outer diameter of the pressing portion, the connecting portion has an annular driving matching slope on the outer wall thereof, the inner wall of the concave cavity is provided with a driving slope for abutting against the driving slider, and a gap is formed between the driving slope and the driving matching slope when the flared end clamps the rotating shaft.

[0006] In some embodiments, a connecting groove is formed on the connecting portion for the end of the first elastic member to be placed in.

[0007] In some embodiments, the slider driving assembly comprises an operating member arranged in the mounting seat in a liftable manner and an operating power member for driving the operating member to lift, and a driving structure is arranged between the operating member and the driving slider for driving the driving slider to move towards the flange portion when the operating member lifts.

[0008] In some embodiments, the operating power member is fixedly installed at the bottom of the mounting seat and below the base plate.

[0009] In some embodiments, the clamping cylinder comprises a clamping shaft member and a coupling member for connecting the tester, the flared end is formed on the clamping shaft member, and the flange portion is formed on the coupling member.

[0010] In some embodiments, a limiting top rod is fixedly arranged inside the clamping cylinder for abutting against the end of the rotating shaft.

[0011] In some embodiments, a limiting assembly is arranged on the base plate, the limiting assembly comprises a limiting support, a first limiting block and a second limiting block, the first limiting block is fixedly connected with the mounting seat, the second limiting block is fixedly connected with the driving slider, and the limiting support is provided with a limiting groove for the first limiting block and the second limiting block to move.

[0012] In some embodiments, a supporting device for fixing the motor is arranged on the base plate, the supporting device comprises a fixing assembly for fixing the motor and a translation assembly for moving the fixing assembly along the axial direction of the clamping cylinder.

[0013] In some embodiments, the supporting device further comprises a lifting adjustment assembly for adjusting the height position of the fixing assembly.

[0014] Compared with the prior art, the clamping detection device provided by the utility model, including clamping cylinder, mounting seat, shaft sleeve head, first elastic component, drive sliding block, second elastic component and sliding block drive assembly, mounting seat can be installed on base plate along the axial movement of clamping cylinder, clamping cylinder is arranged in inner chamber and both ends of clamping cylinder extend to outside mounting seat respectively, shaft sleeve head is sleeved on clamping cylinder and can move along the axial direction of clamping cylinder, first elastic component is sleeved on clamping cylinder and both ends are respectively in abutment with shaft sleeve head and flange part, drive sliding block is arranged in inner chamber and can move along the axial direction of clamping cylinder, sliding block drive assembly can drive drive sliding block to move towards flange part, second elastic component is arranged in inner chamber and both ends are respectively in abutment with drive sliding block and inner wall of mounting seat, in this way, after the flared end of clamping cylinder clamps motor shaft, first preset gap is formed between shaft sleeve head and drive sliding block without contact, second preset gap is formed between clamping cylinder and mounting seat without contact, in this way, clamping cylinder and mounting seat, shaft sleeve head and drive sliding block do not produce friction when clamping cylinder and shaft sleeve head rotate, so that the data value measured is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three-dimensional schematic diagram of the motor loading test device provided by the utility model embodiment Figure One ;

[0016] Figure 2 It is the three-dimensional schematic diagram of the motor loading test device provided by the utility model embodiment Figure Two ;

[0017] Figure 3 It is the exploded schematic view of the clamping detection device provided by the utility model embodiment

[0018] Figure 4 It is the sectional view schematic diagram of the motor loading test device when not clamping motor shaft provided by the utility model embodiment

[0019] Figure 5 It is the sectional view schematic diagram of the motor loading test device when clamping motor shaft provided by the utility model embodiment Figure 4 ;

[0020] Figure 6 It is the sectional view schematic diagram of the motor loading test device when clamping motor shaft provided by the utility model embodiment

[0021] Figure 7 It is the enlarged view of B part in Figure 6 ;

[0022] MAIN ELEMENT SYMBOL EXPLANATION

[0023] 100 - motor loading test device; 101 - base plate; 102 - clamping detection device; 10 - clamp cylinder; 10a - flared end; 10b - flange portion; 11 - clamping shaft member; 12 - coupling member; 13 - limit top rod; 20 - mounting seat; 21 - inner cavity; 30 - shaft sleeve head; 31 - extrusion portion; 32 - connecting portion; 321 - driving matching slope; 322 - connecting groove; 40 - first elastic member; 50 - driving slider; 51 - recessed cavity; 511 - through hole; 512 - driving slope; 52 - inclined groove; 60 - second elastic member; 70 - slider driving assembly; 71 - operating piece; 711 - operating rod portion; 72 - operating power piece; 80 - limiting assembly; 81 - limiting support; 811 - limiting groove; 82 - first limiting block; 83 - second limiting block; G1 - first preset gap; G2 - second preset gap; 200 - motor; 201 - rotating shaft; 300 - supporting device; 301 - fixing assembly; 302 - translation assembly; 303 - lifting adjustment assembly; 3031 - upper wedge block; 3032 - lower wedge block; 3033 - adjusting screw; 400 - tester; 401 - torque sensor; 402 - hysteresis brake. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the following will further describe the present application in detail with reference to the drawings and embodiments. It should be understood that the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0025] In order to make those skilled in the art better understand the technical solutions of the present application, the implementation of the present application will be described in detail below with reference to the specific drawings.

[0026] For the convenience of description, the "front", "rear", "left", "right", "upper" and "lower" in the following are consistent with the front, rear, left, right, upper and lower directions of the drawings themselves, but do not limit the structure of the present application.

[0027] Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meaning understood by those skilled in the art to which the present application belongs. The "first", "second" and similar words used in the patent application description and claims of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "a" and similar words do not represent a quantity limitation, but represent the existence of at least one.

[0028] As Figures 1 to 7As shown, the motor loading test device 100 provided by the embodiment includes a base plate 101 and a clamping detection device 102 for connecting with a motor 200; the clamping detection device 102 includes: a clamping cylinder 10 for connecting a tester 400, the clamping cylinder 10 has a flared end 10a with a tapered outer wall for the rotating shaft 201 of the motor 200 to slide in and out, the clamping cylinder 10 includes a flange portion 10b formed on the outer wall thereof, the flange portion 10b extends along the circumference of the clamping cylinder 10; a mounting seat 20 movably mounted on the base plate 101 along the axial direction of the clamping cylinder 10, the mounting seat 20 has an inner cavity 21, the clamping cylinder 10 is arranged in the inner cavity 21 and the two ends of the clamping cylinder 10 respectively extend out of the mounting seat 20; a shaft sleeve head 30 for making the flared end 10a contract and expand, the shaft sleeve head 30 is sleeved on the clamping cylinder 10 and can move along the axial direction of the clamping cylinder 10; a first elastic member 40 sleeved on the clamping cylinder 10 and abutting against the shaft sleeve head 30 and the flange portion 10b at two ends respectively; a driving sliding block 50 for abutting against the shaft sleeve head 30 and moving the shaft sleeve head 30 towards the flange portion 10b, the driving sliding block 50 is movably arranged in the inner cavity 21 along the axial direction of the clamping cylinder 10; a second elastic member 60 arranged in the inner cavity 21 and abutting against the driving sliding block 50 and the inner wall of the mounting seat 20 at two ends respectively; and a sliding block driving assembly 70 capable of driving the driving sliding block 50 to move towards the flange portion 10b; a first preset gap G1 is left between the driving sliding block 50 and the shaft sleeve head 30 after the flared end 10a contracts, and a second preset gap G2 is left between the flange portion 10b and the inner wall of the mounting seat 20 after the flared end 10a contracts.

[0029] The motor loading test device 100 described above includes the clamping cylinder 10, the mounting seat 20, the shaft sleeve head 30, the first elastic member 40, the driving sliding block 50, the second elastic member 60 and the sliding block driving assembly 70, the mounting seat 20 is movably mounted on the base plate 101 along the axial direction of the clamping cylinder 10, the clamping cylinder 10 is arranged in the inner cavity 21 and the two ends of the clamping cylinder 10 respectively extend out of the mounting seat 20, the shaft sleeve head 30 is sleeved on the clamping cylinder 10 and can move along the axial direction of the clamping cylinder 10, the first elastic member 40 is sleeved on the clamping cylinder 10 and abutting against the shaft sleeve head 30 and the flange portion 10b at two ends respectively, the driving sliding block 50 is movably arranged in the inner cavity 21 along the axial direction of the clamping cylinder 10, the sliding block driving assembly 70 is capable of driving the driving sliding block 50 to move towards the flange portion 10b, and the second elastic member 60 is arranged in the inner cavity 21 and abutting against the driving sliding block 50 and the inner wall of the mounting seat 20 at two ends respectively, so that, after the flared end 10a of the clamping cylinder 10 clamps the rotating shaft 201 of the motor 200, the first preset gap G1 is formed between the shaft sleeve head 30 and the driving sliding block 50 without contact, and the second preset gap G2 is formed between the clamping cylinder 10 and the mounting seat 20 without contact, so that the clamping cylinder 10 and the mounting seat 20, and the shaft sleeve head 30 and the driving sliding block 50 do not produce friction when the clamping cylinder 10 and the shaft sleeve head 30 rotate, so that the measured data value is more accurate.

[0030] Referring to Figure 1 and Figure 2 , the motor loading test device 100 provided by the embodiment comprises a base plate 101 and a clamping detection device 102 for connecting with a motor 200, in the embodiment, the base plate 101 is provided with a supporting device 300 and a tester 400, the clamping detection device 102 is supported on the base plate 101 and located between the supporting device 300 and the tester 400, the supporting device 300 is used for fixing the motor 200, the tester 400 comprises but is not limited to a torque sensor 401 and a hysteresis brake 402 for increasing resistance, the clamping detection device 102, the torque sensor 401 and the hysteresis brake 402 are connected in sequence.

[0031] Referring to Figures 3 to 7The clamping detection device 102 provided by the embodiment comprises a clamping cylinder 10, a mounting seat 20, a shaft sleeve head 30, a first elastic member 40, a driving sliding block 50, a second elastic member 60 and a sliding block driving assembly 70. In the embodiment, the driving sliding block 50, the second elastic member 60 and the sliding block driving assembly 70 are all supported on the mounting seat 20. The clamping cylinder 10 is fixedly connected with an input shaft of the torque sensor 401 through a shaft coupling. The clamping cylinder 10 has a flared end 10a at an end thereof away from the torque sensor 401. The flared end 10a is provided for the rotating shaft 201 of the motor 200 to slide in and out and has a conical surface on an outer wall thereof. A plurality of elastic clamping claws are formed on the flared end 10a of the clamping cylinder 10 and are arranged at intervals in a circumferential direction of the clamping cylinder 10. The clamping cylinder 10 comprises a flange portion 10b formed on an outer wall thereof and extending in the circumferential direction of the clamping cylinder 10. The mounting seat 20 is movably mounted on the base plate 101 in an axial direction of the clamping cylinder 10. The mounting seat 20 has an inner cavity 21 at a top portion thereof. The clamping cylinder 10 is arranged in the inner cavity 21 and both ends of the clamping cylinder 10 extend out of the mounting seat 20. The shaft sleeve head 30 can clamp and unclamp the rotating shaft 201 of the motor 200. The shaft sleeve head 30 is sleeved on the clamping cylinder 10 and is movable in the axial direction of the clamping cylinder 10. The first elastic member 40 is but not limited to a spring. The first elastic member 40 is sleeved on the clamping cylinder 10 and both ends thereof abut against the shaft sleeve head 30 and the flange portion 10b respectively. The driving sliding block 50 is used to abut against the shaft sleeve head 30 and move the shaft sleeve head 30 towards the flange portion 10b. The driving sliding block 50 is movably arranged in the inner cavity 21 in the axial direction of the clamping cylinder 10. The sliding block driving assembly 70 can drive the driving sliding block 50 to move towards the flange portion 10b. The second elastic member 60 is but not limited to a spring. The second elastic member 60 is arranged in the inner cavity 21 and both ends thereof abut against the driving sliding block 50 and an inner wall of the mounting seat 20 respectively. The elastic force of the first elastic member 40 is greater than that of the second elastic member 60. A first preset gap G1 is left between the driving sliding block 50 and the shaft sleeve head 30 when the flared end 10a clamps the rotating shaft 201. A second preset gap G2 is left between the flange portion 10b and the inner wall of the mounting seat 20 when the flared end 10a clamps the rotating shaft 201. That is to say, after the flared end 10a clamps the rotating shaft 201 of the motor 200, through the first preset gap G1 formed between the driving sliding block 50 and the shaft sleeve head 30 and the second preset gap G2 formed between the flange portion 10b and the inner wall of the mounting seat 20, the first preset gap G1 is formed between the shaft sleeve head 30 and the driving sliding block 50 without contact therebetween, the second preset gap G2 is formed between the clamping cylinder 10 and the mounting seat 20 without contact therebetween, and the clamping cylinder 10 and the mounting seat 20 and the shaft sleeve head 30 and the driving sliding block 50 do not produce friction when the clamping cylinder 10 and the shaft sleeve head 30 rotate, so that the measured data value is more accurate.

[0032] Referring to Figures 3 to 7The sleeve head 30 has a circular cross section, which comprises a circular extruding part 31 for extruding the flared end 10a of the clamp cylinder 10 and a connecting part 32 connected with the extruding part 31, the diameter of the connecting part 32 gradually increases from the flared end 10a to the flange part 10b; the driving slider 50 has a concave cavity 51, the bottom of the concave cavity 51 is provided with a through hole 511 for the extruding part 31 to pass through, the diameter of the through hole 511 is larger than the outer diameter of the extruding part 31, the connecting part 32 has an annular driving matching slope 321 on the outer wall thereof, the inner wall of the concave cavity 51 is provided with a driving slope 512 for abutting against the driving slider 50, and a gap is formed between the driving slope 512 and the driving matching slope 321 when the flared end 10a clamps the rotating shaft 201. It should be noted that the diameter of the connecting part 32 is smaller than the inner diameter of the concave cavity 51, the radial gap formed between the extruding part 31 and the through hole 511, the gap formed between the driving slope 512 and the driving matching slope 321 after the flared end 10a is contracted, and the radial gap formed between the connecting part 32 and the concave cavity 51 constitute a first preset gap G1; the radial gap formed between the flange part 10b and the inner cavity 21 and the axial gap formed between the flange part 10b and the inner cavity 21 after the flared end 10a is contracted constitute a second preset gap G2.

[0033] Referring to Figures 3 to 7 The connecting part 32 is provided with a connecting groove 322 for the end of the first elastic member 40 to be inserted, so that the connection structure of the first elastic member 40 and the sleeve head 30 is more stable.

[0034] Referring to Figures 3 to 7 The slider driving assembly 70 comprises an operating member 71 arranged in the mounting seat 20 in a liftable manner and an operating power member 72 for driving the operating member 71 to lift, and a driving structure is arranged between the operating member 71 and the driving slider 50, for driving the driving slider 50 to move towards the flange part 10b when the operating member 71 lifts. In the embodiment, the operating member 71 comprises two parallel and spaced operating rod parts 711, the through hole 511 is located between the two operating rod parts 711, the driving slider 50 has an inclined groove 52 for the sliding cooperation of the operating rod parts 711, and the driving structure comprises an operating slope formed on the operating rod part 711 and an operating matching slope formed on the bottom surface of the inclined groove 52, the operating slope extends obliquely downwards from the top end of the operating rod part 711 to the flange part 10b, so that, under the driving of the operating power member 72, the operating rod part 711 moves upwards (upwards in the drawing), and then pushes the driving slider 50 to move rightwards (rightwards in the drawing).

[0035] Referring to Figures 3 to 7In the embodiment, the operating power 72 is a cylinder, but is not limited thereto, which is fixedly installed at the bottom of the mounting base 20 and below the base plate 101, so that the overall structure is more compact and occupies less space.

[0036] Referring to Figures 3 to 7 The cartridge 10 provided in the embodiment includes a clamping shaft member 11 and a coupling member 12 for connecting the tester 400, which are connected to each other, a flared end 10a is formed on the clamping shaft member 11, and a flange portion 10b is formed on the coupling member 12.

[0037] In other embodiments, the cartridge 10 can be made in one piece.

[0038] Referring to Figures 3 to 7 The cartridge 10 provided in the embodiment is internally fixedly provided with a limiting top rod 13 for abutting against the end of the rotating shaft 201, so that the movement stroke of the rotating shaft 201 of the motor 200 can be limited by the limiting top rod 13, and collision with the motor 200 is avoided to prevent damage to the motor 200.

[0039] Referring to Figures 2 to 3 The base plate 101 provided in the embodiment is provided with a limiting assembly 80, which includes a limiting support 81, a first limiting block 82, and a second limiting block 83, the first limiting block 82 is fixedly connected to the mounting base 20, the second limiting block 83 is fixedly connected to the driving sliding block 50, and the limiting support 81 is provided with a limiting groove 811 for movement of the first limiting block 82 and the second limiting block 83. In the embodiment, the limiting support 81 is respectively provided with two limiting bolts (not shown in the figure) at both ends of the limiting groove 811, which are respectively used for abutting against the first limiting block 82 and the second limiting block 83 to limit the first limiting block 82 and the second limiting block 83 in the axial direction of the cartridge 10, so as to limit the movement of the mounting base 20 and the driving sliding block 50.

[0040] Referring to Figure 1 , Figure 2 , Figures 4 to 7The support device 300 provided in this embodiment includes a fixing component 301 for fixing the motor 200 and a translation component 302 for moving the fixing component 301 along the axial direction of the clamping cylinder 10. The fixing component 301 includes, but is not limited to, a gripper cylinder for fixing the motor 200. The fixing component 301 is supported on the translation component 302. The translation component 302 includes, but is not limited to, a translation cylinder for driving the fixing component 301 to move relative to the base plate 101. In this embodiment, the support device 300 also includes a lifting adjustment component 303 for adjusting the height position of the fixing component 301. The lifting adjustment component 303 includes an upper wedge block 3031, a lower wedge block 3032, and an adjusting screw 3033. The upper wedge block is connected and fixed to the fixing component 301 and supported on the lower wedge block 3032. The adjusting screw 3033 is connected to the lower wedge block 3032 and can move the lower wedge block 3032.

[0041] The following is combined Figure 5 and Figure 7 The operation process of the clamping detection device 102 of the motor loading test device 100 is described in detail.

[0042] Before the rotating shaft 201 of the clamping motor 200, the slider drive assembly 70 moves the drive slider 50 to the right (to the right in the figure) and simultaneously compresses and deforms the second elastic member 60. After the drive slider 50 contacts the bushing head 30, it pushes the bushing head 30 and moves to the right together, compressing and deforming the first elastic member 40. The flared end 10a is in an unfolded state, and the second elastic member 60 continues to deform under pressure. Since the elastic force of the first elastic member 40 is greater than the elastic force of the second elastic member 60, and the clamping cylinder 10 is fixed on the torque sensor 401, while the mounting base 20 is movably mounted on the base plate 101, when the drive slider 50 pushes the bushing head 30 to move and compress the first elastic member 40, the first elastic member 40, after deformation, will form a predetermined elastic thrust on the bushing head 30. This elastic thrust is greater than that of the second elastic member 60. Due to the elastic force, the mounting base 20 will move to the left (left direction in the figure), and the inner wall of the inner cavity 21 will abut against the side of the flange 10b away from the bushing head 30. When the rotating shaft 201 is placed into the flared end 10a of the clamping cylinder 10, the slider drive assembly 70 is reset, and the first elastic member 40 pushes the drive slider 50 and the bushing head 30 to move to the left (left direction in the figure) together. After the bushing head 30 causes the flared end 10a to contract and clamp the rotating shaft 201, the second elastic member 60 causes the drive slider 50 and the mounting base 20 to reset and move to the left (left direction in the figure) and right (right direction in the figure) respectively. In this way, the clamping cylinder 10 and the mounting base 20, and the bushing head 30 and the drive slider 50 will not contact each other, and the clamping cylinder 10 and the mounting base 20, and the bushing head 30 and the drive slider 50 will not generate friction when the clamping cylinder 10 and the bushing head 30 rotate.

[0043] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A motor loading test device, characterized in that, Includes a substrate and a clamping detection device for connection with the motor; the clamping detection device includes: A clamp for connecting a tester, the clamp having a flared end with a motor shaft that slides in and out and has a tapered outer wall, the clamp including a flange formed on its outer wall, the flange extending circumferentially along the clamp. A mounting base is movably mounted on the base plate along the axial direction of the clamp, the mounting base having an inner cavity, the clamp being disposed in the inner cavity and both ends of the clamp extending out of the mounting base; A bushing head is used to shrink and expand the flared end, and is fitted onto the clamp and can move along the axial direction of the clamp. The first elastic member is sleeved on the clamp and its two ends abut against the bushing head and the flange respectively; A drive slider is used to abut against the bushing head and move the bushing head toward the flange portion. The drive slider is movably disposed in the inner cavity along the axial direction of the clamp. A second elastic member is disposed in the inner cavity and its two ends abut against the inner walls of the drive slider and the mounting base, respectively; and A slider driving assembly is capable of driving the driving slider to move toward the flange portion; A first preset gap is left between the drive slider and the bushing head after the flared end contracts, and a second preset gap is left between the flange and the inner wall of the mounting base after the flared end contracts.

2. The motor loading test device according to claim 1, characterized in that, The bushing head includes a pressing part for pressing the flared end of the clamp and a connecting part connected to the pressing part. The diameter of the connecting part gradually increases from the flared end towards the flange. The drive slider has a cavity, and a through hole is provided at the bottom of the cavity for the pressing part to pass through. The diameter of the through hole is larger than the outer diameter of the pressing part. The connecting part has an annular drive mating inclined surface on its outer wall. A drive inclined surface is provided on the inner wall of the cavity for abutting against the drive slider. A gap is formed between the drive inclined surface and the drive mating inclined surface when the rotating shaft is clamped at the flared end.

3. The motor loading test device according to claim 2, characterized in that, The connecting part has a connecting groove for inserting the end of the first elastic member.

4. The motor loading test device according to claim 1, characterized in that, The slider drive assembly includes an operating component that is vertically and vertically disposed within the mounting base and an operating power component for driving the operating component to move up and down. A drive structure is provided between the operating component and the drive slider for driving the drive slider to move toward the flange portion when the operating component moves up and down.

5. The motor loading test device according to claim 4, characterized in that, The operating power component is fixedly installed at the bottom of the mounting base and located below the base plate.

6. The motor loading test apparatus according to any one of claims 1 to 5, characterized in that, The clamp includes a clamping shaft component connected to each other and a connecting component for connecting the tester, the flared end being shaped on the clamping shaft component and the flange being formed on the connecting component.

7. The motor loading test apparatus according to any one of claims 1 to 5, characterized in that, A limiting rod is fixedly installed inside the clamping cylinder to abut against the end of the rotating shaft.

8. The motor loading test apparatus according to any one of claims 1 to 5, characterized in that, A limiting component is provided on the substrate. The limiting component includes a limiting bracket, a first limiting block, and a second limiting block. The first limiting block is fixedly connected to the mounting base, and the second limiting block is fixedly connected to the driving slider. The limiting bracket is provided with a limiting groove for the first limiting block and the second limiting block to move.

9. The motor loading test apparatus according to any one of claims 1 to 5, characterized in that, The base plate is provided with a support device for fixing the motor. The support device includes a fixing component for fixing the motor and a translation component for moving the fixing component along the axial direction of the clamp.

10. The motor loading test device according to claim 9, characterized in that, The support device also includes a lifting and adjusting component for adjusting the height of the fixing component.

Images