Test fixtures and test systems

Abstract

This utility model relates to the field of motor performance testing technology, and discloses a testing fixture and testing system. The testing fixture includes a fixed base, a support frame, and an output connector. The fixed base is spaced apart on the side of the test bench. The support frame is detachably connected to the fixed base, and has an internal mounting cavity for mounting a hub motor. One end of the support frame has a through hole communicating with the mounting cavity. The output connector includes a first connecting end and a second connecting end arranged opposite to each other. The first connecting end is used to connect to the motor output end of the hub motor, and the second connecting end has a first flange. The first flange is detachably connected to the test output shaft of the test bench through the through hole. The testing fixture provided by this utility model, with the first flange detachably connected to the test output shaft of the test bench through the through hole, avoids the problem of misalignment between the motor output end of the hub motor and the test output shaft of the test bench, facilitating assembly.

Description

Technical Field

[0001] This utility model relates to the field of motor performance testing technology, specifically to testing fixtures and testing systems. Background Technology

[0002] When performing performance tests on a motor, the motor housing is usually positioned and fixed to the mounting surface of the test bench using a mounting plate, and the motor output end is usually connected to the test bench via a splined shaft.

[0003] However, since hub motors themselves lack a housing for fixing and positioning, calibration tests on hub motors typically require the fabrication of a fixed housing to connect to the test bench during calibration testing. The fixed housing generally includes a stator mounting plate and a support fixture. The stator mounting plate connects to both the stator and the support fixture of the hub motor to mount the motor within the support fixture. The support fixture is then directly connected to the mounting plate of the test bench to secure the motor. In this case, the lack of a positioning reference on the stator itself, coupled with machining deviations in the various fixtures, makes it impossible to guarantee the coaxiality of the external splines of the hub motor output and the internal splines of the test bench, resulting in significant assembly difficulties. Utility Model Content

[0004] In view of this, the present invention provides a testing fixture and testing system to solve the problem that the coaxiality of the external spline of the hub motor output and the internal spline of the test bench cannot be guaranteed due to the lack of a positioning reference on the stator itself and the machining deviation of each fixture, resulting in very difficult assembly.

[0005] In a first aspect, this utility model provides a testing fixture, comprising:

[0006] Fixtures are provided at intervals on the sides of the test bench;

[0007] A support frame is detachably connected to the fixed base. The support frame has an internal mounting cavity for mounting a hub motor. One end of the support frame has a through hole communicating with the mounting cavity.

[0008] The output connector includes a first connecting end and a second connecting end disposed opposite to each other. The first connecting end is used to connect to the motor output end of the hub motor. The second connecting end is provided with a first flange, which is detachably connected to the test output shaft of the test bench through the through hole.

[0009] Beneficial effects: The mounting bracket securely supports the hub motor to be tested on the side of the test bench via a support frame. The motor output end of the hub motor is connected to the test output shaft of the test bench via an output connector, facilitating testing on the test bench. The second connecting end of the output connector has a first flange, which is detachably connected to the test output shaft of the test bench through a through hole. This design minimizes the impact of machining deviations in various tooling components and allows for fine-tuning of the connection position to ensure coaxiality between the motor output end of the hub motor and the test output shaft of the test bench, avoiding alignment difficulties and facilitating assembly. Furthermore, the mounting brackets, spaced apart on the side of the test bench, increase the distance between the hub motor and the test bench, further simplifying the connection of the output connector.

[0010] In one alternative embodiment, the first connection end is provided with a second flange, which is detachably connected to the motor output end of the hub motor.

[0011] Beneficial effects: The second flange is detachably connected to the motor output end of the hub motor, and is less affected by the machining deviation of various tooling. The connection position can also be finely adjusted to ensure the coaxiality between the motor output end of the hub motor and the test output shaft of the test bench, avoiding the problem of misalignment between the motor output end of the hub motor and the test output shaft of the test bench, and facilitating assembly.

[0012] In one optional embodiment, the fixed base is provided with a mounting hole, and one end of the support frame with the through hole is detachably connected to the fixed base. The support frame is located on the side of the support frame facing away from the test bench. The position of the through hole corresponds to that of the mounting hole. The first flange is detachably connected to the test output shaft of the test bench through the through hole and the mounting hole.

[0013] Beneficial effects: The support frame with through holes at one end is detachably connected to the fixed base. Connecting the support frame to the side facing away from the test bench not only provides fixed support for the hub motor but also leaves sufficient assembly space for the output connector, facilitating the installation and removal of the first flange and the test output shaft. Furthermore, the mounting holes allow for clearance of the output connector, ensuring that it can be connected to the test output shaft.

[0014] In one alternative embodiment, the support frame includes:

[0015] The bracket body is cylindrical, and the inner cavity of the bracket body is the mounting cavity;

[0016] A mounting plate is detachably connected to one end of the bracket body. The mounting plate has the through hole and is detachably connected to the fixing seat.

[0017] Beneficial effects: The mounting plate is detachably connected to the bracket body, which simplifies the structure of the support frame, facilitates the processing and forming of each component of the support frame, and facilitates the installation and removal of the hub motor in the mounting cavity.

[0018] In one optional embodiment, the mounting plate has a first end face and a second end face on the side facing the fixing base. The first end face protrudes from the second end face. The first end face has at least three first connecting holes spaced apart circumferentially, and the second end face has at least three second connecting holes spaced apart circumferentially. The fixing base has a corresponding third connecting hole, and the bracket body has a corresponding fourth connecting hole. The first connecting hole and the third connecting hole are detachably connected by a first fastening structure, and the second connecting hole and the fourth connecting hole are detachably connected by a second fastening structure.

[0019] Beneficial effects: The first connecting hole and the third connecting hole are detachably connected via a first fastening structure, and the second connecting hole and the fourth connecting hole are detachably connected via a second fastening structure. Connection and disassembly are simple and convenient, and stability is high. Furthermore, the first end face protrudes beyond the second end face, creating a height difference between them. When the first end face is connected to the fixed base, the second end face is spaced from the fixed base, which not only accommodates the second fastening structure and prevents interference but also serves a positioning function during the connection process.

[0020] In one alternative embodiment, the support frame includes:

[0021] The bracket body is cylindrical, and the inner cavity of the bracket body is the mounting cavity;

[0022] The stator mounting structure is detachably connected to one end of the bracket body away from the through hole, and the stator of the hub motor is detachably connected to the stator mounting structure.

[0023] Beneficial effects: By setting up the stator mounting structure, the hub motor can be detachably connected to the mounting cavity, and because the stator mounting structure is connected to the stator, it will not interfere with or affect the operation of other components of the hub motor.

[0024] In one optional embodiment, the stator mounting structure includes:

[0025] A fixed plate is detachably connected to the bracket body;

[0026] An adapter plate is disposed on the fixed plate and located within the mounting cavity, and the adapter plate is detachably connected to the stator.

[0027] Beneficial effects: The stator can be fixed on the fixed plate by the adapter plate, and the hub motor can be fixed in the mounting cavity by the fixed plate, which facilitates the installation and disassembly of the stator and the support frame.

[0028] In one optional embodiment, the fixed plate is provided with a clearance groove and at least three fifth connecting holes distributed circumferentially, the fifth connecting holes being located near the outer periphery of the fixed plate, and the bracket body is provided with a corresponding sixth connecting hole, the fifth connecting holes and the sixth connecting holes being detachably connected by a third fastening structure.

[0029] The fixed plate is also provided with at least three seventh connecting holes distributed circumferentially, and the clearance groove is provided between the fifth connecting hole and the seventh connecting hole; the stator is provided with an eighth connecting hole, and the seventh connecting hole and the eighth connecting hole are detachably connected by a fourth fastening structure.

[0030] Beneficial effects: The fifth and sixth connecting holes are detachably connected via a third fastening structure, and both the fifth and sixth connecting holes include at least three of each. The seventh and eighth connecting holes are detachably connected via a fourth fastening structure. Therefore, the connection direction can be selected by rotation during connection to ensure that the clearance groove can smoothly avoid the outlet positions of high-voltage wires, water pipes, low-voltage signal lines, etc., of the hub motors of different wheels, avoiding interference between the fixing plate and the high-voltage wires, water pipes, low-voltage signal lines, etc. of the hub motors. Furthermore, it facilitates disassembly and installation.

[0031] In one optional embodiment, the fixing base includes:

[0032] Base plate, for detachable connection to the side of the test bench;

[0033] A fixed plate, one end of which is connected to the top of the base plate and the other end extends upward, and the support frame is detachably connected to the fixed plate;

[0034] The reinforcing plate is connected to both the base plate and the fixing plate.

[0035] Beneficial effects: The base plate can be used to fix the support frame and output connector to the side of the test bench, the fixing plate can be used to fix the support frame and output connector at the height corresponding to the test bench, and the reinforcing plate can increase the strength of the fixing seat.

[0036] Secondly, this utility model also provides a testing system, comprising:

[0037] Test bench;

[0038] The aforementioned test fixture; the test fixture is detachably connected to the side of the test bench. Attached Figure Description

[0039] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of a testing fixture from one perspective, according to an embodiment of the present utility model.

[0041] Figure 2 This is a schematic diagram of another perspective of a testing fixture according to an embodiment of the present utility model;

[0042] Figure 3 This is a schematic diagram of the output connector of a test fixture according to an embodiment of the present utility model;

[0043] Figure 4 This is a schematic diagram of the mounting plate of a test fixture according to an embodiment of the present utility model;

[0044] Figure 5 This is a schematic diagram of the support body of a test fixture according to an embodiment of the present utility model;

[0045] Figure 6 This is a schematic diagram of a fixing plate of a test fixture according to an embodiment of the present utility model;

[0046] Figure 7 This is a schematic diagram of an adapter plate for a testing fixture according to an embodiment of the present utility model;

[0047] Figure 8 This is a schematic diagram of a fixing seat for a test fixture according to an embodiment of the present utility model.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1. Fixed base; 11. Mounting hole; 12. Base plate; 13. Fixed plate; 14. Reinforcing plate; 2. Support frame; 21. Bracket body; 22. Mounting plate; 221. First end face; 222. Second end face; 23. Stator mounting structure; 231. Fixed plate; 2311. Clearance groove; 232. Adapter plate; 3. Output connector; 31. First flange; 32. Second flange; 100. Hub motor. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0051] The following is combined with Figures 1 to 8 The following describes embodiments of the present invention.

[0052] According to an embodiment of the present invention, a testing fixture is provided, including a fixed base 1, a support frame 2, and an output connector 3. The fixed base 1 is spaced apart on the side of the test bench. The support frame 2 is detachably connected to the fixed base 1, and the support frame 2 has an internal mounting cavity for mounting a hub motor 100. One end of the support frame 2 has a through hole communicating with the mounting cavity. The output connector 3 includes a first connecting end and a second connecting end disposed opposite to each other. The first connecting end is used to connect to the motor output end of the hub motor 100, and the second connecting end has a first flange 31, which is detachably connected to the test output shaft of the test bench through the through hole.

[0053] The mounting base 1, via the support frame 2, secures the hub motor 100 to the side of the test bench. The motor output end of the hub motor 100 is connected to the test output shaft of the test bench via an output connector 3, facilitating testing on the test bench. The second connecting end of the output connector 3 is provided with a first flange 31, which is detachably connected to the test output shaft of the test bench via a through hole. This connection is less affected by machining deviations of various tooling components and allows for fine-tuning of the connection position to ensure coaxiality between the motor output end of the hub motor 100 and the test output shaft of the test bench, avoiding alignment difficulties and facilitating assembly. Furthermore, since the mounting bases 1 are spaced apart on the side of the test bench, they increase the distance between the hub motor 100 and the test bench, further facilitating the connection of the output connector 3.

[0054] In one embodiment, the first connection end is provided with a second flange 32, which is detachably connected to the motor output end of the hub motor 100.

[0055] The second flange 32 is detachably connected to the motor output end of the hub motor 100. It is less affected by the machining deviation of each tooling and can also be finely adjusted to ensure the coaxiality between the motor output end of the hub motor 100 and the test output shaft of the test bench. This avoids the problem of misalignment between the motor output end of the hub motor 100 and the test output shaft of the test bench, and facilitates assembly.

[0056] In one embodiment, the fixed base 1 is provided with a mounting hole 11, and one end of the support frame 2 with the through hole is detachably connected to the fixed base 1. The support frame 2 is located on the side of the support frame 2 facing away from the test bench. The through hole corresponds to the position of the mounting hole 11. The first flange 31 is detachably connected to the test output shaft of the test bench through the through hole and the mounting hole 11.

[0057] One end of the support frame 2 with a through hole is detachably connected to the fixed base 1. Connecting the support frame 2 to the side facing away from the test bench allows for both fixed support of the hub motor 100 and provides sufficient assembly space for the output connector 3, facilitating the installation and removal of the first flange 31 from the test output shaft. Furthermore, the mounting hole 11 allows for clearance of the output connector 3, ensuring that it can be connected to the test output shaft.

[0058] In one embodiment, the support frame 2 includes a support body 21 and a mounting plate 22; the support body 21 is cylindrical, and the inner cavity of the support body 21 is the mounting cavity; the mounting plate 22 is detachably connected to one end of the support body 21, the mounting plate 22 is provided with the through hole, and the mounting plate 22 is detachably connected to the fixing seat 1.

[0059] The mounting plate 22 is detachably connected to the bracket body 21, which simplifies the structure of the support frame 2, facilitates the processing and forming of each component of the support frame 2, and facilitates the installation and removal of the hub motor 100 in the mounting cavity.

[0060] In a further embodiment, the support body 21 is a cage-shaped cylinder, which facilitates ventilation and heat dissipation of the hub motor 100, facilitates monitoring of the status of the hub motor 100, and also has high strength.

[0061] In a preferred embodiment, the support body 21 includes a support cylinder and a through hole disposed on the cylinder wall of the support cylinder. The through hole may be a triangular hole, and there may be at least three through holes spaced apart in a circumferential direction. The two adjacent hole walls of two adjacent triangular holes may be arranged in parallel.

[0062] In one embodiment, the mounting plate 22 has a first end face 221 and a second end face 222 on the side facing the fixing base 1. The first end face 221 protrudes from the second end face 222. The first end face 221 has at least three first connecting holes spaced apart circumferentially, and the second end face 222 has at least three second connecting holes spaced apart circumferentially. The fixing base 1 has a corresponding third connecting hole, and the bracket body 21 has a corresponding fourth connecting hole. The first connecting hole and the third connecting hole are detachably connected by a first fastening structure, and the second connecting hole and the fourth connecting hole are detachably connected by a second fastening structure.

[0063] The first connecting hole and the third connecting hole are detachably connected via a first fastening structure, and the second connecting hole and the fourth connecting hole are detachably connected via a second fastening structure. Connection and disassembly are simple and convenient, and the stability is high. Furthermore, the first end face 221 protrudes from the second end face 222, creating a height difference between them. When the first end face 221 is connected to the fixed base 1, there is a gap between the second end face 222 and the fixed base 1. This not only accommodates the second fastening structure and prevents interference, but also serves a positioning function during the connection process.

[0064] In one embodiment, the support frame 2 includes a support body 21 and a stator mounting structure 23; the support body 21 is cylindrical, and the inner cavity of the support body 21 is the mounting cavity; the stator mounting structure 23 is detachably connected to one end of the support body 21 away from the through hole, and the stator of the hub motor 100 is detachably connected to the stator mounting structure 23.

[0065] By setting the stator mounting structure 23, the hub motor 100 can be detachably connected to the mounting cavity, and since the stator mounting structure 23 is connected to the stator, it will not interfere with or affect the operation of other components of the hub motor 100.

[0066] In one embodiment, the stator mounting structure 23 includes a fixed plate 231 and an adapter plate 232. The fixed plate 231 is detachably connected to the bracket body 21. The adapter plate 232 is disposed on the fixed plate 231 and located in the mounting cavity. The adapter plate 232 is detachably connected to the stator.

[0067] The stator can be fixed on the fixed plate 231 via the adapter plate 232, and the hub motor 100 can be fixed in the mounting cavity via the fixed plate 231, which facilitates the installation and disassembly of the stator and the support frame 2.

[0068] In one embodiment, the fixed plate 231 is provided with a clearance groove 2311 and at least three fifth connecting holes spaced apart circumferentially. The fifth connecting holes are located near the outer periphery of the fixed plate 231. The bracket body 21 is provided with a corresponding sixth connecting hole. The fifth connecting holes and the sixth connecting holes are detachably connected by a third fastening structure. The fixed plate 231 is also provided with at least three seventh connecting holes spaced apart circumferentially. The clearance groove 2311 is located between the fifth connecting holes and the seventh connecting holes. The stator is provided with a corresponding eighth connecting hole. The seventh connecting holes and the eighth connecting holes are detachably connected by a fourth fastening structure.

[0069] The fifth connecting hole and the sixth connecting hole are detachably connected via a third fastening structure, and both the fifth and sixth connecting holes include at least three of each. The seventh connecting hole and the eighth connecting hole are detachably connected via a fourth fastening structure. Therefore, the connection direction can be selected by rotation during connection to ensure that the clearance groove 2311 can smoothly avoid the outlet positions of high-voltage lines, water pipes, low-voltage signal lines, etc. of the hub motor 100 of different wheels, avoiding interference between the fixed plate 231 and the high-voltage lines, water pipes, low-voltage signal lines, etc. of the hub motor 100. Furthermore, it facilitates disassembly and installation. It also avoids the reduction in strength of the fixed plate 231 with multiple clearance grooves 2311 that would otherwise be inverted.

[0070] In one embodiment, the mounting base 1 includes a base plate 12, a fixing plate 13, and a reinforcing plate 14; the base plate 12 is detachably connected to the side of the test bench; one end of the fixing plate 13 is connected to the top of the base plate 12, and the other end extends upward; the support frame 2 is detachably connected to the fixing plate 13; the reinforcing plate 14 is connected to both the base plate 12 and the fixing plate 13.

[0071] The support frame 2 and the output connector 3 can be fixed to the side of the test bench by the base plate 12, the support frame 2 and the output connector 3 can be fixed at a height corresponding to the test bench by the fixing plate 13, and the strength of the fixing seat 1 can be increased by the reinforcing plate 14.

[0072] In a further embodiment, the base plate 12 is provided with a strip-shaped hole, which is detachably connected to the test platform where the test bench is located by fasteners and the strip-shaped hole, and the position of the movable fixing seat 1 can be finely adjusted due to the strip-shaped hole. The height adjustment of the fixing seat 1 can be achieved by adding a shim between the base plate 12 and the test platform.

[0073] Specifically, the fixing plate 13 is vertically connected to the middle of the base plate 12 to form an inverted T-shaped structure. The reinforcing plate 14 is connected to the end away from the test platform, and the reinforcing plate 14 avoids the mounting holes 11 provided on the fixing plate 13.

[0074] According to an embodiment of the present invention, another aspect provides a testing system, including a test bench and the aforementioned testing fixture; the testing fixture is detachably connected to the side of the test bench.

[0075] The testing system can perform performance tests on the hub motor 100, such as calibration tests.

[0076] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A testing fixture, characterized in that, include: Fixture (1) is used to be spaced out on the side of the test bench; A support frame (2) is detachably connected to the fixed base (1). The support frame (2) has an internal mounting cavity for mounting a hub motor (100). One end of the support frame (2) has a through hole communicating with the mounting cavity. The output connector (3) includes a first connection end and a second connection end arranged opposite to each other. The first connection end is used to connect to the motor output end of the hub motor (100). The second connection end is provided with a first flange (31). The first flange (31) is detachably connected to the test output shaft of the test bench through the through hole.

2. The test fixture according to claim 1, characterized in that, The first connection end is provided with a second flange (32), which is detachably connected to the motor output end of the hub motor (100).

3. The testing fixture according to claim 1, characterized in that, The fixed base (1) is provided with a mounting hole (11). The end of the support frame (2) with the through hole is detachably connected to the fixed base (1). The support frame (2) is located on the side of the support frame (2) facing away from the test bench. The position of the through hole corresponds to that of the mounting hole (11). The first flange (31) is detachably connected to the test output shaft of the test bench through the through hole and the mounting hole (11).

4. The testing fixture according to claim 3, characterized in that, The support frame (2) includes: The bracket body (21) is cylindrical, and the inner cavity of the bracket body (21) is the mounting cavity; Mounting plate (22) is detachably connected to one end of bracket body (21). Mounting plate (22) is provided with through hole. Mounting plate (22) is detachably connected to fixed seat (1).

5. The testing fixture according to claim 4, characterized in that, The mounting plate (22) has a first end face (221) and a second end face (222) on the side facing the fixing base (1). The first end face (221) protrudes from the second end face (222). The first end face (221) has at least three first connecting holes spaced apart in the circumferential direction. The second end face (222) has at least three second connecting holes spaced apart in the circumferential direction. The fixing base (1) has a corresponding third connecting hole. The bracket body (21) has a corresponding fourth connecting hole. The first connecting hole and the third connecting hole are detachably connected by a first fastening structure. The second connecting hole and the fourth connecting hole are detachably connected by a second fastening structure.

6. The test fixture according to any one of claims 3 to 5, characterized in that, The support frame (2) includes: The bracket body (21) is cylindrical, and the inner cavity of the bracket body (21) is the mounting cavity; The stator mounting structure (23) is detachably connected to one end of the bracket body (21) away from the through hole, and the stator of the hub motor (100) is detachably connected to the stator mounting structure (23).

7. The test fixture according to claim 6, characterized in that, The stator mounting structure (23) includes: The fixing plate (231) is detachably connected to the bracket body (21); An adapter plate (232) is disposed on the fixed plate (231) and located within the mounting cavity, and the adapter plate (232) is detachably connected to the stator.

8. The test fixture according to claim 7, characterized in that, The fixed plate (231) is provided with a relief groove (2311) and at least three fifth connecting holes distributed circumferentially. The fifth connecting holes are located near the outer periphery of the fixed plate (231). The bracket body (21) is provided with a corresponding sixth connecting hole. The fifth connecting hole and the sixth connecting hole are detachably connected by a third fastening structure. The fixed plate (231) is also provided with at least three seventh connecting holes distributed circumferentially, and the clearance groove (2311) is provided between the fifth connecting hole and the seventh connecting hole; the stator is provided with an eighth connecting hole, and the seventh connecting hole and the eighth connecting hole are detachably connected by a fourth fastening structure.

9. The test fixture according to any one of claims 1 to 5, 7, or 8, characterized in that, The fixed base (1) includes: A base plate (12) is used for detachable connection to the side of the test bench; A fixing plate (13) is connected at one end to the top of the base plate (12) and extends upward at the other end. The support frame (2) is detachably connected to the fixing plate (13). The reinforcing plate (14) is connected to both the base plate (12) and the fixing plate (13).

10. A testing system, characterized in that, include: Test bench; The test fixture according to any one of claims 1 to 9; The test fixture is detachably connected to the side of the test bench.

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