Motor testing device

Abstract

The utility model discloses a motor testing device, and relates to the field of testing tools, the motor testing device comprises a first fitting piece and a second fitting piece, the first fitting piece is suitable for being in transmission connection with a motor to be tested and is sleeved on the second fitting piece; the limiting assembly is in limiting fit with the second matching part, the driving part is arranged on the mounting frame and connected with the limiting assembly, and the driving part can drive the limiting assembly to move so that the limiting assembly can be in limiting fit with or separated from the first matching part. Therefore, the first matching piece is in transmission connection with the to-be-tested motor, the driving piece can drive the limiting assembly to be matched with or separated from the first matching piece in a limiting manner, the durability of the to-be-tested motor under different working conditions can be tested by controlling the driving piece, and different tools do not need to be disassembled and replaced for many times, so that the operation process can be simplified, and the testing efficiency is improved. The operation difficulty of the test is reduced, the test time can be shortened, and the damage risk of the to-be-tested motor can be reduced.

Description

Technical Field

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

[0002] In the related art, it is necessary to conduct durability tests on the motor at different temperatures and different working conditions to verify the output stability of the motor. By adjusting the switching temperature in a high and low temperature chamber, different temperatures of the durability test are simulated. To switch between different working conditions of the motor, it is necessary to open the temperature chamber, take out the motor and tooling, replace them with different tooling, and put them back into the temperature chamber. Therefore, the motor and tooling need to be disassembled multiple times during the test, which makes the operation process cumbersome, makes the test operation difficult, and causes the test time to be too long, and also increases the risk of damage to the motor. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a motor testing device that can reduce the difficulty of testing operations and reduce the risk of damage to the motor to be tested.

[0004] According to the utility model, the motor testing device includes: a first mating part and a second mating part, the first mating part is suitable for being connected to the motor to be tested and is sleeved on the second mating part; a limit assembly, a mounting frame and a driving member, the limit assembly is limitedly matched with the second mating part, the driving member is arranged on the mounting frame and connected to the limit assembly, and the driving member can drive the limit assembly to move so that the limit assembly and the first mating part are limitedly matched or separated.

[0005] According to the motor testing device of the present invention, by making the first mating part transmission-connected with the motor to be tested, and making the driving part drive the limiting assembly to limit the mating or separation with the first mating part, the durability performance of the motor to be tested under different working conditions can be tested by controlling the driving part, without the need to disassemble and replace different tooling multiple times, thereby simplifying the operating process, reducing the difficulty of the test operation, shortening the test time, and reducing the risk of damage to the motor to be tested.

[0006] In some examples of the present invention, the limit assembly includes: a limit seat and a limit member, the limit seat has a first limit groove, the first mating member has a second limit groove, the second limit groove corresponds to the first limit groove, and part of the limit member is arranged in the first limit groove. The driving member can drive the limit seat to move, so as to drive the limit member through the limit seat, so that part of the limit member enters the second limit groove or escapes from the second limit groove.

[0007] In some examples of the present invention, the wall surfaces of the first limiting groove and the second limiting groove are both arc surfaces, and the limiting member is configured as a sphere.

[0008] In some examples of the present invention, there are multiple second limit grooves, and the multiple second limit grooves are arranged at intervals along the circumference of the first matching piece. The number of the first limit grooves and the second limit grooves is the same and corresponds one to one. The first matching piece has a slide, and a portion of each second limit groove is constructed as a portion of the slide, and the width of the second limit groove is greater than the width of the slide.

[0009] In some examples of the present invention, the limiting assembly includes: a limiting seat, the limiting seat having a first limiting portion, the first mating member having a second limiting portion, and the driving member capable of driving the limiting seat to move so that the first limiting portion and the second limiting portion are limitedly engaged or separated.

[0010] In some examples of the present invention, the limiting assembly includes: a limiting seat, the limiting seat has a third limiting portion, the second matching piece has a fourth limiting portion, and the third limiting portion is limitedly matched with the fourth limiting portion.

[0011] In some examples of the present invention, the motor testing device further includes: a plurality of first balls, the plurality of first balls being arranged around the second mating piece and being located between the first mating piece and the second mating piece, the second mating piece having an annular boss protruding toward the outside, the first mating piece having a first recessed portion with an arc-shaped wall, and along the height direction of the motor testing device, at least a portion of the first recessed portion is located above the annular boss, a plurality of the first balls being placed on the annular boss, and a portion of each of the first balls being located within the first recessed portion.

[0012] In some examples of the present invention, the motor testing device also includes: a plurality of second balls, a stopper and a fixing member, the plurality of second balls are arranged around the second mating member and are all located between the first mating member and the second mating member, the second mating member has a second recessed portion with an arcuate wall surface, and a portion of each second ball is located in the second recessed portion. Along the height direction of the motor testing device, the stopper is located above the second ball to stop the second ball, and the fixing member is fixed to the second mating member and is used to limit the stopper.

[0013] In some examples of the present invention, the motor testing device further includes: a connecting member, the connecting member is fixedly connected to the first mating member, the connecting member has a connecting portion, the connecting portion has a mating key, and the mating key is suitable for transmission connection with the motor to be tested.

[0014] In some examples of the present invention, the motor testing device further includes: a pipeline, the driving component is constructed as an air pressure regulating seat, and the pipeline is connected to the air pressure regulating seat.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a schematic diagram of a motor testing device according to an embodiment of the present utility model;

[0018] Figure 2 is an exploded schematic diagram of a motor testing device according to an embodiment of the present utility model;

[0019] Figure 3 is a schematic diagram of a partial structure of a motor testing device according to an embodiment of the present utility model;

[0020] Figure 4 yes Figure 3 sectional view of

[0021] Figure 5 It is an exploded schematic diagram of a partial structure of a motor testing device according to an embodiment of the present utility model.

[0022] Reference numerals:

[0023] Motor testing device 100; motor to be tested 99;

[0024] First matching member 10; second limiting groove 11; slideway 12; first recessed portion 14; second recessed portion 15;

[0025] The second fitting member 20; the fourth limiting portion 21; the second limiting groove 211; the annular boss 22; the third recessed portion 23;

[0026] Limiting assembly 30; limiting seat 31; limiting member 33; third limiting portion 34; second limiting protrusion 341;

[0027] First ball 41; second ball 42; stopper 43; fixing member 44; connecting member 45; connecting portion 451;

[0028] Matching key 452; pipeline 46;

[0029] Mounting armrest 47; mounting frame 48; drive member 49; connecting cover 50. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. 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 only to explain the present invention and are not to be construed as limiting the present invention.

[0031] Reference below Figure 1-Figure 5 A motor testing device 100 according to an embodiment of the present invention is described.

[0032] like Figure 1-Figure 5 As shown, the motor testing device 100 according to the embodiment of the present invention includes: a first matching member 10 , a second matching member 20 , a limiting assembly 30 , a mounting bracket 48 and a driving member 49 .

[0033] The first mating part 10 is suitable for transmission connection with the motor to be tested 99 and is sleeved on the second mating part 20; the limiting component 30 is limitedly matched with the second mating part 20, and the driving component 49 is provided on the mounting frame 48 and connected to the limiting component 30. The driving component 49 can drive the limiting component 30 to move so that the limiting component 30 is limitedly matched or separated with the first mating part 10.

[0034] Among them, the first matching part 10 can be connected to the motor to be tested 99 by transmission. Specifically, when the output shaft of the motor to be tested 99 rotates, it can drive the first matching part 10 to rotate. As some embodiments of the present application, the output shaft of the motor to be tested 99 and the first matching part 10 can be directly connected by transmission, or the output shaft of the motor to be tested 99 and the first matching part 10 can be connected by transmission through a coupling.

[0035] Furthermore, the first matching member 10 can be sleeved on the second matching member 20 , and the limiting assembly 30 is limitedly matched with the second matching member 20 so that the limiting assembly 30 and the second matching member 20 do not rotate relative to each other.

[0036] The driving member 49 is provided on the mounting frame 48 , and the mounting frame 48 can be used to mount the motor 99 to be tested. In some embodiments of the present application, the mounting frame 48 is made of nylon, and the mounting frame 48 is assembled by plates and bolts.

[0037] The driving member 49 is connected to the limiting assembly 30. The connection method of the driving member 49 and the limiting assembly 30 can be, but is not limited to, welding, bolting, etc. In some embodiments of the present application, the driving member 49 and the limiting assembly 30 are connected by bolting. In some embodiments of the present application, the driving member 49 and the limiting assembly 30 are fixedly connected by an external clamp. The driving member 49 can drive the limiting assembly 30 to move, so that the limiting assembly 30 and the first mating member 10 are limited and engaged or separated.

[0038] As some embodiments of the present application, the driving member 49 includes a driving body and a driving part. The driving body is connected to the mounting bracket 48, and the driving part is connected to the limiting assembly 30. The driving body can drive the driving part so that the driving part drives the limiting assembly 30 to move, thereby limiting the limiting assembly 30 and the first mating member 10, or separating the limiting assembly 30 from the first mating member 10.

[0039] It should be noted that by installing the motor 99 to be tested on the motor testing device 100 and placing the entire device in a temperature chamber at different temperatures, the motor 99 to be tested can be subjected to endurance tests at different temperatures and working conditions.

[0040] When the motor 99 to be tested rotates at a certain speed, the limit assembly 30 can be driven by the driving member 49 to move along the height direction of the motor testing device 100 (i.e. Figure 1 The first mating member 10 is driven by the output shaft of the motor 99 to be tested to rotate relative to the second mating member 20, so as to perform durability tests at different temperatures under the condition that the motor 99 to be tested rotates at a certain speed.

[0041] For the working condition where the motor 99 to be tested is locked with a certain current, the motor 99 to be tested can be operated at a very low speed first, and then the limit assembly 30 is driven by the driving member 49 to move along the height direction of the motor testing device 100 (i.e. Figure 1 The first mating piece 10 is engaged with the second mating piece 10, thereby preventing the first mating piece 10 and the second mating piece 20 from rotating relative to each other. Since the output shaft of the motor 99 to be tested is in transmission connection with the first mating piece 10, the output shaft of the motor 99 to be tested is restricted from rotating, so that the endurance test under different temperatures can be carried out when the motor 99 to be tested is locked at a certain current.

[0042] For the working condition that the motor to be tested 99 is powered but not working, the limiting assembly 30 can be driven by the driving member 49 to move along the height direction of the motor testing device 100 (i.e. Figure 1The motor 99 to be tested is energized but not working, so as to perform durability tests at different temperatures under the condition that the motor 99 to be tested is energized but not working.

[0043] As some embodiments of the present application, the motor to be tested 99 may be a motor of an electric power steering system of a vehicle.

[0044] As some embodiments of the present application, by moving the motor testing device 100 and the motor to be tested 99 to temperature chambers at different temperatures, endurance tests at different temperatures can be performed.

[0045] It should be noted that the motor test device 100 can realize the switching of multiple working modes, which can reduce the number of times the test personnel disassemble and assemble the motor 99 to be tested and the motor test device 100, simplify the operation process, reduce the difficulty of operation, and also reduce the probability of damage to the motor 99 to be tested during the disassembly and assembly process. In addition, reducing the number of times the test personnel disassemble and assemble the motor 99 to be tested can also indirectly reduce the situation where the test personnel load test parameters multiple times (the temperature chamber is shut down and restarted when the motor 99 to be tested is installed), reducing the test time. In addition, the motor test device 100 has a simple structure, is easy to operate, and has a low cost, which is beneficial to the production economy of the motor test device 100.

[0046] Therefore, by making the first mating part 10 transmission-connected with the motor 99 to be tested, and making the driving part 49 drive the limiting assembly 30 to limit the mating or separation with the first mating part 10, the durability performance of the motor 99 to be tested under different working conditions can be tested by controlling the driving part 49, without the need to disassemble and replace different tooling multiple times, thereby simplifying the operation process, reducing the difficulty of the test operation, shortening the test time, and reducing the risk of damage to the motor 99 to be tested.

[0047] In some embodiments of the present invention, Figure 2 、 Figure 3 and Figure 5 As shown, the limiting assembly 30 includes: a limiting seat 31 and a limiting member 33, the limiting seat 31 has a first limiting groove, the first matching member 10 has a second limiting groove 11, the second limiting groove 11 corresponds to the first limiting groove, and a portion of the limiting member 33 is arranged in the first limiting groove. The driving member 49 can drive the limiting seat 31 to move, so as to drive the limiting member 33 through the limiting seat 31, so that a portion of the limiting member 33 enters the second limiting groove 11 or disengages from the second limiting groove 11.

[0048] Among them, the limiting assembly 30 includes a limiting seat 31 and a limiting member 33. As some embodiments of the present application, the limiting seat 31 is sleeved on the second matching member 20. As some embodiments of the present application, the second matching member 20 is provided with a sliding bearing. The limiting seat 31 is sleeved on the second matching member 20. By providing the sliding bearing, the limiting seat 31 can be moved along the height direction of the motor testing device 100 (i.e. Figure 1 Z direction shown) smooth movement.

[0049] The limiting seat 31 has a first limiting slot, which can be multiple, such as but not limited to ten, twelve, fourteen, etc. In some embodiments of the present application, the number of first limiting slots is twelve. The first mating member 10 has a second limiting slot 11, which can be multiple, such as but not limited to ten, twelve, fourteen, etc. In some embodiments of the present application, the number of second limiting slots 11 is twelve. The second limiting slots 11 correspond to the first limiting slots. Specifically, the second limiting slots 11 are the same number as the first limiting slots and are arranged in a one-to-one correspondence.

[0050] The number of the limiting members 33, the second limiting grooves 11, and the first limiting grooves are the same and are arranged one by one. Part of the limiting member 33 is arranged in the corresponding first limiting groove, that is, a part of the limiting member 33 is arranged in the first limiting groove of the limiting seat 31, and the driving member 49 can drive the limiting seat 31 to move along the height direction of the motor test device (i.e. Figure 1 The limiting member 33 is driven by the limiting seat 31 so that another part of the limiting member 33 enters the second limiting groove 11 of the first matching member 10 to limit the first matching member 10, or the other part of the limiting member 33 is disengaged from the second limiting groove 11 to enable the first matching member 10 to rotate.

[0051] It should be noted that the driving member 49 can drive the limiting seat 31 to move along the height direction of the motor testing device (ie Figure 1 For the working condition that the motor 99 to be tested rotates at a certain speed or the working condition that the motor 99 to be tested is powered but not working, the limit seat 31 can be driven by the driving member 49 to move along the height (i.e. Figure 1 The first mating piece 10 is moved downward (in the Z direction shown) (away from the first mating piece 10) to disengage part of the structure of the limiting piece 33 from the second limiting groove 11 so that the first mating piece 10 can rotate. The first mating piece 10 rotates relative to the second mating piece 20 driven by the output shaft of the motor 99 to be tested. Alternatively, the motor 99 to be tested can be adjusted to be powered on but not to work, so that endurance tests can be performed at different temperatures under conditions where the motor 99 to be tested rotates at a certain speed or under conditions where the motor 99 to be tested is powered on but not to work.

[0052] For the working condition that the motor to be tested 99 is locked with a certain current, the motor to be tested 99 can be operated at a very low speed first, and the limit seat 31 is driven by the driving member 49 to move along the height direction of the motor testing device 100 (i.e. Figure 1 The first engaging member 10 is moved upward (in the Z direction shown) (moved closer to the first engaging member 10) so that part of the structure of the limiting member 33 enters the second limiting groove 11 of the first engaging member 10 to limit the first engaging member 10 and prevent the first engaging member 10 and the second engaging member 20 from rotating relative to each other. Since the output shaft of the motor 99 to be tested is in transmission connection with the first engaging member 10, the output shaft of the motor 99 to be tested is also restricted from rotating, thereby enabling endurance testing at different temperatures to be performed on the working condition of the motor 99 to be tested when it is locked at a certain current.

[0053] By making the limit seat 31 have a first limit groove, the first matching part 10 have a second limit groove 11, and making part of the limit part 33 able to enter the second limit groove 11 or disengage from the second limit groove 11, the working mode of the motor to be tested 99 can be quickly switched, and there is no need to disassemble the motor testing device 100 and the motor to be tested 99 multiple times, thereby simplifying the operation process, reducing the test time, reducing the difficulty of the test operation, and reducing the probability of damage to the motor to be tested 99, which is conducive to extending the service life of the motor to be tested 99.

[0054] In some embodiments of the present invention, Figure 5 As shown, the wall surfaces of the first limiting groove and the second limiting groove 11 are both arc surfaces, and the limiting member 33 is constructed as a sphere.

[0055] The walls of the first limiting groove and the second limiting groove 11 are both cambered surfaces, that is, the wall of the first limiting groove is a cambered surface, and the wall of the second limiting groove 11 is a cambered surface, and the limiting member 33 is constructed as a sphere.

[0056] By making the wall surfaces of the first limit groove and the second limit groove 11 both arc surfaces and making the limit member 33 constructed as a sphere, the limit member 33 can smoothly transition when contacting and limiting with the first matching member 10, which can reduce the probability of the motor testing device 100 getting stuck when switching the working mode limit, which is beneficial to improving the reliability of the motor testing device 100.

[0057] In some embodiments of the present invention, Figure 5 As shown, there are multiple second limiting grooves 11, and the multiple second limiting grooves 11 are arranged at intervals along the circumference of the first matching piece 10. The number of first limiting grooves and second limiting grooves 11 is the same and corresponds one to one. The first matching piece 10 has a slide 12, and a portion of each second limiting groove 11 is constructed as a portion of the slide 12, and the width of the second limiting groove 11 is greater than the width of the slide 12.

[0058] Among them, there are multiple second limiting grooves 11, and the multiple second limiting grooves 11 are arranged at intervals along the circumference of the first matching piece 10. The number of second limiting grooves 11 can be, but is not limited to, ten, twelve, fourteen, etc. As some embodiments of the present application, the number of second limiting grooves 11 is twelve, and the twelve second limiting grooves 11 are arranged at intervals along the circumference of the first matching piece 10. There are multiple first limiting grooves, and the number of first limiting grooves can be, but is not limited to, ten, twelve, fourteen, etc. The number of first limiting grooves and second limiting grooves 11 is the same and is arranged in a one-to-one correspondence. As some embodiments of the present application, the number of first limiting grooves is twelve, and the number of second limiting grooves 11 is twelve.

[0059] The first mating component 10 has a slideway 12, and a portion of each second limiting groove 11 is configured as a portion of the slideway 12, that is, the slideway 12 is configured as an annular groove. The slideway 12 is arranged along the circumference of the first mating component 10. The plurality of second limiting grooves 11 are arranged along the circumference of the first mating component 10, and portions of the plurality of second limiting grooves 11 overlap with portions of the slideway 12, that is, portions of the plurality of second limiting grooves 11 are configured as portions of the slideway 12. Furthermore, the width of the second limiting grooves 11 is greater than the width of the slideway 12, that is, along the radial direction of the first mating component 10, the width of the second limiting grooves 11 is greater than the width of the slideway 12.

[0060] By making the number of the first limit grooves and the second limit grooves 11 the same and corresponding one to one, and making parts of the multiple second limit grooves 11 all constructed as parts of the slide 12, and making the width of the second limit groove 11 greater than the width of the slide 12, the limit member 33 can slide and buffer when contacting the first matching member 10 for limitation, and can transition smoothly and be limited in the second limit groove 11, which can reduce the probability of the motor testing device 100 getting stuck when switching the working mode limit, which is beneficial to improving the reliability of the motor testing device 100.

[0061] In some embodiments of the present invention, the limiting assembly 30 includes: a limiting seat 31, the limiting seat 31 has a first limiting portion, the first matching member 10 has a second limiting portion, and the driving member 49 can drive the limiting seat 31 to move so that the first limiting portion and the second limiting portion are limitedly matched or separated.

[0062] The limiting assembly 30 includes a limiting seat 31, which has a first limiting portion. The number of the first limiting portions can be multiple, and the number of the first limiting portions can be, but is not limited to, ten, twelve, fourteen, etc. In some embodiments of the present application, the number of the first limiting portions is twelve. The first mating component 10 has a second limiting portion. The number of the second limiting portions can be multiple, and the number of the second limiting portions can be, but is not limited to, ten, twelve, fourteen, etc. In some embodiments of the present application, the number of the first limiting portions is twelve, and the number of the second limiting portions is the same as that of the first limiting portions and is arranged in a one-to-one correspondence.

[0063] The driving member 49 can drive the limiting seat 31 to move so that the first limiting portion and the second limiting portion are limitedly engaged or separated. Specifically, the driving member 49 can drive the limiting seat 31 to move along the height direction of the motor testing device 100 (i.e. Figure 1 Alternatively, the driving member 49 can drive the limiting seat 31 to move upward along the height direction (i.e., the Z direction shown in FIG. 1 ) of the motor testing device 100 so that the first limiting portion is engaged with the second limiting portion of the first matching member 10 to limit the first matching member 10. Figure 1 The first position-limiting portion 12 is moved downward (in the Z direction shown) to separate the first limiting portion from the first matching member 10, so that the first matching member 10 can rotate.

[0064] As some embodiments of the present application, the first limiting portion can be one of the first limiting protrusion and the first limiting groove, and the second limiting portion can be the other of the first limiting protrusion and the first limiting groove, and the first limiting protrusion and the first limiting groove cooperate with each other so that the limiting component 30 limits the first mating part 10. For example, the first limiting portion is the first limiting protrusion, and the second limiting portion is the first limiting groove, and the first limiting protrusion and the first limiting groove cooperate with each other so that the limiting component 30 limits the first mating part 10.

[0065] As some embodiments of the present application, the structural dimensions and number of the first limiting portion and the second limiting portion can be designed according to the torque of the motor 99 to be tested and the size of the motor testing device 100 .

[0066] By making the limit seat 31 have a first limit portion, the first matching member 10 have a second limit portion, and making the driving member 49 able to drive the limit seat 31 to move, so that the first limit portion and the second limit portion are limitedly matched or separated, the working mode of the motor to be tested 99 can be quickly switched, and there is no need to disassemble the motor testing device 100 and the motor to be tested 99 multiple times, thereby simplifying the operation process, reducing the test time, reducing the difficulty of the test operation, and reducing the probability of damage to the motor to be tested 99, which is beneficial to the service life of the motor to be tested 99.

[0067] In some embodiments of the present invention, Figure 5As shown, the limiting assembly 30 includes: a limiting seat 31, the limiting seat 31 has a third limiting portion 34, the second matching member 20 has a fourth limiting portion 21, and the third limiting portion 34 is limitedly matched with the fourth limiting portion 21.

[0068] The limiting assembly 30 includes a limiting seat 31, which has a third limiting portion 34. The number of third limiting portions 34 may be multiple, including but not limited to two, three, or four. In some embodiments of the present application, there are two third limiting portions 34. The second mating component 20 includes a fourth limiting portion 21. The number of fourth limiting portions 21 may be multiple, including but not limited to two, three, or four. In some embodiments of the present application, there are two fourth limiting portions 21. The fourth limiting portions 21 are identical in number to the third limiting portions 34 and are provided in a one-to-one correspondence.

[0069] The third limiting portion 34 is limited and cooperated with the fourth limiting portion 21. As some embodiments of the present application, the third limiting portion 34 can be one of the second limiting protrusion 341 and the second limiting groove 211, and the fourth limiting portion 21 can be the other of the second limiting protrusion 341 and the second limiting groove 211. The second limiting protrusion 341 and the second limiting groove 211 cooperate with each other to limit the limiting seat 31 and the second matching piece 20. For example, the third limiting portion 34 is the second limiting protrusion 341, and the fourth limiting portion 21 is the second limiting groove 211. The second limiting protrusion 341 and the second limiting groove 211 cooperate with each other to limit the limiting seat 31 and the second matching piece 20. That is, the limiting seat 31 and the second matching piece 20 cannot rotate relative to each other.

[0070] By providing the limiting seat 31 with a third limiting portion 34, the second matching member 20 with a fourth limiting portion 21, and ensuring that the third limiting portion 34 and the fourth limiting portion 21 are limited and matched, the structure of the motor testing device 100 can be made reasonable, and the limiting seat 31 and the second matching member 20 can be prevented from relative rotation, which is beneficial to improving the reliability of the motor testing device 100.

[0071] In some embodiments of the present invention, Figure 4 As shown, the motor testing device 100 also includes: a plurality of first balls 41, the plurality of first balls 41 are arranged around the second mating piece 20 and are all located between the first mating piece 10 and the second mating piece 20, the second mating piece 20 has an annular boss 22 protruding toward the outside, the first mating piece 10 has a first recessed portion 14 with an arc-shaped wall surface, along the height direction of the motor testing device 100, at least a portion of the first recessed portion 14 is located above the annular boss 22, and the plurality of first balls 41 are all placed on the annular boss 22, and a portion of each first ball 41 is located in the first recessed portion 14.

[0072] The motor testing device 100 further includes a plurality of first balls 41. The number of first balls 41 may be plural, and may be, but is not limited to, ten, twelve, or fourteen. In some embodiments of the present application, the number of first balls 41 is twelve. The plurality of first balls 41 are disposed around the second mating component 20. Specifically, the plurality of first balls 41 are spaced circumferentially around the second mating component 20, and the plurality of first balls 41 are located between the first mating component 10 and the second mating component 20.

[0073] The second mating component 20 has an outwardly protruding annular boss 22, that is, the annular boss 22 protrudes in a direction away from the axis of the second mating component 20. The first mating component 10 has a first recessed portion 14. In some embodiments of the present application, the first recessed portion 14 is configured as an annular groove structure, the wall surface of the first recessed portion 14 being an arcuate surface. A plurality of first rolling balls 41 are arranged at intervals around the circumference of the second mating component 20. The plurality of first rolling balls 41 are all arranged above the annular boss 22, and a portion of the structure of each first rolling ball 41 is located within the first recessed portion 14.

[0074] As some embodiments of the present application, there are multiple first recesses 14, the wall surfaces of the multiple first recesses 14 are all arc surfaces, the multiple first balls 41 are arranged at circumferential intervals around the second mating piece 20, the multiple first balls 41 are all arranged above the annular boss 22, and part of the structure of each first ball 41 is located in the corresponding first recess 14 (that is, the number of first balls 41 and the first recess 14 are the same and correspond one to one).

[0075] Specifically, under certain test conditions, when the output shaft of the motor to be tested 99 rotates, the output shaft of the motor to be tested 99 will drive the first fitting 10 to rotate, and the first fitting 10 will rotate relative to the second fitting 20. A plurality of first balls 41 are arranged between the first fitting 10 and the second fitting 20. The first fitting 10 and the second fitting 20 can radially limit the first ball 41 so that the first ball 41 provides radial support to the first fitting 10, ensuring the coaxiality of the first fitting 10 and the second fitting 20, and reducing the probability of the first fitting 10 and the second fitting 20 getting stuck when rotating. In addition, by arranging a plurality of first balls 41 between the first fitting 10 and the second fitting 20, the wear of the first fitting 10 and / or the second fitting 20 can be reduced by the first ball 41, extending the service life, and improving the reliability of the motor testing device 100.

[0076] Furthermore, along the height direction of the motor testing device 100 (ie Figure 1In the Z direction shown in FIG. 1 , at least a portion of the first recessed portion 14 is located above the annular boss 22. In other words, a portion of the first recessed portion 14 is located above the annular boss 22, or the entire first recessed portion 14 is located above the annular boss 22. This arrangement can axially limit the plurality of first balls 41, reducing the probability of axial movement or even axial dislodgement of the plurality of first balls 41, thereby improving the structural rationality of the motor testing device 100.

[0077] In some embodiments of the present invention, Figure 4 As shown, the motor testing device 100 further includes: a plurality of second balls 42, a stopper 43 and a fixing member 44, wherein the plurality of second balls 42 are arranged around the second mating member 20 and are all located between the first mating member 10 and the second mating member 20, and the second mating member 20 has a second recessed portion 15 with an arcuate wall surface, and a portion of each second ball 42 is located in the second recessed portion 15, along the height direction of the motor testing device 100 (i.e. Figure 1 The stopper 43 is located above the second ball 42 to stop the second ball 42 , and the fixing member 44 is fixed to the second matching member 20 and is used to limit the stopper 43 .

[0078] The motor testing device 100 further includes a plurality of second balls 42, a stopper 43, and a fixing member 44. The number of second balls 42 may be multiple, and may be, but is not limited to, ten, twelve, or fourteen. In some embodiments of the present application, the number of second balls 42 is twelve. The plurality of second balls 42 is disposed around the second mating member 20. Specifically, the plurality of second balls 42 are spaced circumferentially around the second mating member 20, and the plurality of second balls 42 are each located between the first mating member 10 and the second mating member 20.

[0079] The first mating piece 10 has a second recessed portion 15 . As some embodiments of the present application, the second recessed portion 15 is constructed as an annular groove structure, the wall surface of the second recessed portion 15 is an arc surface, and part of the structure of each second ball 42 is located in the second recessed portion 15 .

[0080] As some embodiments of the present application, there are multiple second recesses 15, the wall surfaces of the multiple second recesses 15 are all arc surfaces, the multiple second recesses 15 are arranged at circumferential intervals along the first mating part 10, and partial structures of the multiple second balls 42 are all located in the corresponding second recesses 15 (that is, the number of second balls 42 and second recesses 15 is the same and corresponds one to one).

[0081] Along the height direction of the motor testing device 100 (ie Figure 1The stopper 43 is located above the second ball 42 to stop the second ball 42. The fixing member 44 is fixed to the second mating member 20 and can be used to limit the stopper 43. The fixing member 44 and the second mating member 20 can be connected by, but not limited to, a clamping connection or a bolt connection. In some embodiments of the present application, the fixing member 44 and the second mating member 20 are connected by a clamping connection.

[0082] As some embodiments of the present application, the fixing member 44 is a clip spring. As some embodiments of the present application, the second fitting member 20 has a third recessed portion 23. A portion of the fixing member 44 is disposed in the third recessed portion 23, and another portion of the fixing member 44 is disposed along the height direction of the motor testing device 100 (i.e., Figure 1 The second ball 42 is abutted against the stopper 43 in the Z direction as shown in the figure to limit the stopper 43 and thus the stopper 43 stops the second ball 42.

[0083] It should be noted that, by arranging multiple second balls 42 between the first fitting 10 and the second fitting 20, the second balls 42 can be radially limited, so that the second balls 42 further provide radial support to the first fitting 10, further ensure the coaxiality of the first fitting 10 and the second fitting 20, and reduce the probability of the first fitting 10 and the second fitting 20 getting stuck during rotation. Moreover, by arranging multiple second balls 42 between the first fitting 10 and the second fitting 20, the wear of the first fitting 10 and / or the second fitting 20 can be reduced by the second balls 42, thereby extending and improving the reliability of the motor testing device 100.

[0084] By positioning the stop member 43 above the second ball 42 to stop the second ball 42, and fixing the fixing member 44 to the second mating member 20 and limiting the stop member 43, the motor testing device 100 can be structurally reasonable, and multiple second balls 42 can be axially limited, thereby reducing the probability of axial movement or even axial disengagement of multiple second balls 42, which is beneficial to improving the structural rationality of the motor testing device 100.

[0085] It should be noted that by setting the first ball 41 and the second ball 42, when the motor 99 to be tested drives the first fitting part 10 to rotate, the first fitting part 10 can be separated from the second fitting part 20 to reduce the impact of friction on the test results, which is conducive to improving the accuracy of the test.

[0086] As some embodiments of the present application, when the motor 99 to be tested drives the first mating part 10 to rotate, the first ball 41 and the second ball 42 can be separated from the second mating part 20 under the action of centrifugal force (that is, the first ball 41 and the second ball 42 are not in contact with the second mating part 20), thereby reducing the impact of friction on the test results.

[0087] In some embodiments of the present invention, Figure 1-Figure 5 As shown, the motor testing device 100 further includes: a connecting member 45 , the connecting member 45 is fixedly connected to the first matching member 10 , the connecting member 45 has a connecting portion 451 , the connecting portion 451 has a matching key 452 , and the matching key 452 is suitable for transmission connection with the motor 99 to be tested.

[0088] The motor testing device 100 further includes a connecting member 45, which is fixedly connected to the first mating member 10. The connection between the connecting member 45 and the first mating member 10 may be, but is not limited to, welding, bolt connection, etc. In some embodiments of the present application, the connecting member 45 and the first mating member 10 are connected by bolt connection. The connecting member 45 has a connecting portion 451, which is connected to the first mating member 10 along the height direction (i.e. Figure 1 The Z direction shown in the figure), the connecting portion 451 is arranged on the side of the connecting member 45 away from the first mating member 10, and the connecting portion 451 has a mating key 452. The number of the mating keys 452 can be multiple, and the number of the mating keys 452 can be but not limited to two, three, four, etc. As some embodiments of the present application, the number of the mating keys 452 is four.

[0089] The output shaft of the motor to be tested 99 can have multiple mating grooves, and the number of mating grooves is the same as and corresponds one to one with the mating keys 452. By mating the mating keys 452 with the mating grooves, the connecting member 45 can be connected to the motor to be tested 99 in a transmission manner, and then the first mating member 10 can be connected to the motor to be tested 99 in a transmission manner.

[0090] As some embodiments of the present application, the connecting portion 451 has a trapezoidal claw, and the output shaft of the motor to be tested 99 has a slot. The trapezoidal claw of the connecting portion 451 cooperates with the slot of the output shaft of the motor to be tested 99 to radially limit the output shaft of the motor to be tested 99, thereby enabling the connecting portion 45 to be transmission-connected to the motor to be tested 99, and further enabling the first mating portion 10 to be transmission-connected to the motor to be tested 99.

[0091] By making the motor testing device 100 also include a connecting member 45, and making the connecting member 45 fixedly connected to the first matching member 10, the first matching member 10 can be transmission-connected to the motor 99 to be tested through the connecting member 45, so that the structure of the motor testing device 100 can be reasonable. Moreover, such a simple structure is conducive to reducing the difficulty of production and manufacturing.

[0092] As some embodiments of the present application, the motor testing device 100 also includes: a connecting cover 50, which is connected to the connecting member 45 and the first matching member 10. As some embodiments of the present application, the connecting cover 50 and the connecting member 45 and the first matching member 10 are all detachably connected, and the connecting member 45 is connected to the first matching member 10 through the connecting cover 50. Specifically, the connecting cover 50 is arranged between the connecting member 45 and the first matching member 10.

[0093] This arrangement can split the motor testing device 100 into multiple parts, which can reduce the difficulty of producing a single part. In addition, a single part can be replaced according to demand, and a damaged part can be replaced separately when a part is damaged, which can make the structure of the motor testing device 100 reasonable.

[0094] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the motor testing device 100 further includes: a pipeline 46 , a driving member 49 configured as an air pressure regulating seat, and the pipeline 46 is connected to the air pressure regulating seat.

[0095] Among them, the motor testing device 100 also includes a pipeline 46, and the driving member 49 is constructed as an air pressure regulating seat. The pipeline 46 is connected to the air pressure regulating seat to supply gas to the air pressure regulating seat through the pipeline 46. Specifically, when gas is introduced into the air pressure regulating seat through the pipeline 46, the air pressure regulating seat rises so that the limit component 30 limits the first matching component 10. When the air pressure regulating seat discharges gas through the pipeline 46, the air pressure regulating seat is lowered so that the limit component 30 cannot limit the first matching component 10.

[0096] By making the motor testing device 100 also include a pipeline 46 and making the driving member 49 constructed as an air pressure regulating seat, the limit assembly 30 can be controlled by air control to test the durability performance of the motor 99 to be tested under different working conditions. The air control method is accurate and reliable, which is conducive to improving the reliability of the motor testing device 100.

[0097] As some embodiments of the present application, the motor testing device 100 also includes an installation armrest 47, which is connected to the mounting frame 48 by bolts. This makes it easier to carry the motor testing device 100 and helps improve the reliability of the motor testing device 100.

[0098] As some embodiments of the present application, the material of the mounting armrest 47 is metal.

[0099] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0100] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0101] In the description of the present invention, “plurality” means two or more.

[0102] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact via another feature therebetween.

[0103] In the description of the present invention, a first feature “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0104] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0105] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor testing device (100), characterized in that: include: A first matching piece (10) and a second matching piece (20), wherein the first matching piece (10) is adapted to be transmission-connected to the motor to be tested (99) and is sleeved on the second matching piece (20); A limiting assembly (30), a mounting frame (48) and a driving member (49), wherein the limiting assembly (30) is limitedly matched with the second matching member (20), the driving member (49) is arranged on the mounting frame (48) and connected to the limiting assembly (30), and the driving member (49) can drive the limiting assembly (30) to move so that the limiting assembly (30) and the first matching member (10) are limitedly matched or separated.

2. The motor testing device (100) according to claim 1, characterized in that The limiting assembly (30) includes: a limiting seat (31) and a limiting member (33), the limiting seat (31) has a first limiting groove, the first matching member (10) has a second limiting groove (11), the second limiting groove (11) corresponds to the first limiting groove, a portion of the limiting member (33) is arranged in the first limiting groove, and the driving member (49) can drive the limiting seat (31) to move, so as to drive the limiting member (33) through the limiting seat (31), so that a portion of the limiting member (33) enters the second limiting groove (11) or escapes from the second limiting groove (11).

3. The motor testing device (100) according to claim 2, characterized in that: The wall surfaces of the first limiting groove and the second limiting groove (11) are both arc surfaces, and the limiting member (33) is constructed as a sphere.

4. The motor testing device (100) according to claim 2, characterized in that There are a plurality of second limiting grooves (11), and the plurality of second limiting grooves (11) are arranged at intervals along the circumference of the first matching piece (10). The first limiting grooves and the second limiting grooves (11) are the same in number and correspond one to one. The first matching piece (10) has a slideway (12), and a portion of each second limiting groove (11) is constructed as a portion of the slideway (12), and the width of the second limiting groove (11) is greater than the width of the slideway (12).

5. The motor testing device (100) according to claim 1, characterized in that The limiting assembly (30) comprises: a limiting seat (31), the limiting seat (31) having a first limiting portion, the first matching member (10) having a second limiting portion, and the driving member (49) capable of driving the limiting seat (31) to move so that the first limiting portion and the second limiting portion are limitedly matched or separated.

6. The motor testing device (100) according to claim 1, characterized in that The limiting assembly (30) comprises: a limiting seat (31), the limiting seat (31) having a third limiting portion (34), the second matching piece (20) having a fourth limiting portion (21), and the third limiting portion (34) and the fourth limiting portion (21) being limited and matched.

7. The motor testing device (100) according to claim 1, characterized in that Also includes: A plurality of first balls (41) are provided around the second fitting (20) and are all located between the first fitting (10) and the second fitting (20); the second fitting (20) has an annular boss (22) protruding outward; the first fitting (10) has a first recessed portion (14) with an arcuate wall; along the height direction of the motor testing device (100), at least a portion of the first recessed portion (14) is located above the annular boss (22); the plurality of first balls (41) are all placed on the annular boss (22), and a portion of each first ball (41) is located within the first recessed portion (14).

8. The motor testing device (100) according to claim 1, characterized in that Also includes: A plurality of second balls (42), a stopper (43) and a fixing member (44), wherein the plurality of second balls (42) are arranged around the second fitting member (20) and are all located between the first fitting member (10) and the second fitting member (20), the second fitting member (20) having a second recessed portion (15) with an arcuate wall, a portion of each second ball (42) is located in the second recessed portion (15), along the height direction of the motor testing device (100), the stopper (43) is located above the second ball (42) to stop the second ball (42), and the fixing member (44) is fixed to the second fitting member (20) and is used to limit the stopper (43).

9. The motor testing device (100) according to any one of claims 1 to 8, characterized in that: Also includes: A connecting member (45) is fixedly connected to the first matching member (10), the connecting member (45) has a connecting portion (451), the connecting portion (451) has a matching key (452), and the matching key (452) is suitable for transmission connection with the motor to be tested (99).

10. The motor testing device (100) according to any one of claims 1 to 8, characterized in that: Also includes: The pipeline (46) is configured as a gas pressure regulating seat, and the driving member (49) is connected to the gas pressure regulating seat.

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