A direct current motor testing fixture and equipment

Abstract

This utility model relates to the field of DC motor testing technology, specifically to a DC motor testing fixture and equipment, including a fixture base plate, a braking mechanism, and a clamping and positioning mechanism; the clamping and positioning mechanism includes a clamping component and a positioning component; the braking mechanism is located on one end of the fixture base plate, and the clamping component and the positioning component are oppositely arranged on the other end of the fixture base plate, the output end of the braking mechanism is connected to the transmission end of the clamping component through a second coupling, and the clamping component and the positioning component are movably clamped and engaged; the movably clamping and engaging clamping component and the positioning component are used to clamp and fix the motor under test, the overall clamping structure is simple, and it is convenient for operators to quickly complete the clamping or unclamping of the motor under test, thereby shortening the time required for DC motor testing and improving testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of DC motor testing technology, specifically to a DC motor testing fixture and equipment. Background Technology

[0002] Currently, a DC motor is a device that converts electrical energy into kinetic energy (referring to rotational motion) to drive an object to rotate. Before being sold, DC motors must undergo various performance tests by the quality inspection department to ensure their service life and safety performance after leaving the factory.

[0003] The main tests for DC motors before they leave the factory are no-load performance and load performance (power, speed and current). However, the existing testing equipment used to test the no-load performance and load performance of DC motors uses a relatively complicated test fixture clamping method, which is inconvenient for operators and prolongs the time required for DC motor testing. This has certain limitations in practical applications.

[0004] Therefore, the applicant hereby proposes a DC motor testing fixture and equipment to solve the aforementioned problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a DC motor testing fixture and equipment.

[0006] The technical solution of this utility model is as follows:

[0007] This utility model provides a DC motor testing fixture, including a fixture base plate, a braking mechanism, and a clamping and positioning mechanism; the clamping and positioning mechanism includes a clamping component and a positioning component; the braking mechanism is disposed on one end of the fixture base plate, and the clamping component and the positioning component are disposed opposite to each other on the other end of the fixture base plate, the output end of the braking mechanism is connected to the transmission end of the clamping component through a second coupling, and the clamping component and the positioning component are in a movable clamping engagement.

[0008] Furthermore, the braking mechanism includes a base frame, a fixed plate, a torque sensor, and a brake; the base frame is mounted on one end of the fixture base plate, the fixed plate and the torque sensor are respectively mounted on the outer end and inner end of the base frame, the brake is mounted on the fixed plate and its output end is connected to the input shaft of the torque sensor through a first coupling, and the output shaft of the torque sensor is connected to the transmission end of the clamping assembly through a second coupling.

[0009] Furthermore, the clamping assembly includes a base, a sliding member, a fixed frame, and a shaft gripper; the base is disposed on the fixture base plate, the sliding member is disposed on the base, the fixed frame is disposed on the sliding member and connected to its output end, the top of the fixed frame is connected to the shaft gripper, and the transmission end of the shaft gripper is connected to the second coupling.

[0010] Furthermore, a U-shaped groove is vertically provided on the top of the fixing frame, and cam bearings are also provided on both sides of the U-shaped groove on the fixing frame.

[0011] Furthermore, the shaft gripper includes a gripping rod, a gripping sleeve, and a telescopic spring; the driving end of the gripping rod is connected to the second coupling, the gripping end of the gripping rod is hollow and funnel-shaped, and has multiple transverse gripping slots that can be elastically closed or opened around it; the gripping sleeve is hollow inside and is fitted onto the gripping end of the gripping rod; the telescopic spring is located on the driving end of the gripping rod between the second coupling and the gripping sleeve; the outer surface of the gripping sleeve has a protrusion that mates with a U-shaped groove.

[0012] Furthermore, the clamping assembly also includes a buffer; the buffer includes a telescopic rod fixed to the inner end of the base and a buffer element disposed on the telescopic end of the telescopic rod.

[0013] Furthermore, the positioning component includes a slide rail, a sliding seat, and a driving component; the two slide rails are laterally opposite each other on the fixture base plate located at the inner end of the clamping component, the sliding seat is longitudinally disposed on the two slide rails and its two ends are respectively slidably engaged with the corresponding slide rails, the driving component is disposed on the fixture base plate located at the outer end of the sliding seat and its output end is connected to the sliding seat, and the top of the sliding seat is provided with a placement cavity.

[0014] Furthermore, the positioning component also includes a clamping device; the clamping device includes a fixed bracket, a clamping drive, a clamping arm, and a clamping rod; the fixed bracket is located on the side of the sliding seat, the clamping drive is located on the fixed bracket, the output end of the clamping drive is connected to one end of the horizontally arranged clamping arm, and the other end of the clamping arm is connected to the vertically arranged clamping rod.

[0015] Furthermore, the positioning component also includes a barcode scanner; the barcode scanner includes a universal magnetic base and a barcode scanner; the universal magnetic base is located on the bottom plate of the fixture and is situated on the side of the sliding seat, and the barcode scanner is located on the adjusting end of the universal magnetic base.

[0016] This utility model also provides a DC motor testing device, including a body and the aforementioned testing fixture; the testing fixture is disposed on the body.

[0017] The beneficial effects achieved by this utility model are as follows:

[0018] The present invention provides a DC motor testing fixture and equipment, which uses a clamping component and a positioning component to clamp and fix the motor under test. The overall clamping structure is simple, which makes it easy for the staff to quickly clamp or unclamp the motor under test, thereby shortening the time required for DC motor testing and improving testing efficiency. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 yes Figure 1 Enlarged view of point A.

[0021] Figure 3 This is a schematic diagram of the axial gripper mechanism.

[0022] Figure 4 This is a three-dimensional schematic diagram of a DC motor testing device.

[0023] Figure 5 This is a schematic diagram of the structure of a DC motor testing device. Detailed Implementation

[0024] To facilitate understanding of this utility model by those skilled in the art, the specific embodiments of this utility model are clearly described below with reference to the accompanying drawings. Obviously, the specific embodiments described are merely preferred embodiments of this utility model, and not all embodiments.

[0025] like Figure 1-5 As shown, this utility model provides a DC motor test fixture for testing the no-load and load performance (power, speed, and current) of a DC motor. It includes a fixture base plate 1 for installation and positioning, a braking mechanism 2 for providing torque output to the DC motor under test, and a clamping and positioning mechanism 3 for placing and positioning the DC motor under test. The clamping and positioning mechanism 3 includes a clamping component 31 for clamping the output shaft of the DC motor under test and buffering the clamping force, and a positioning component 32 for placing and fixing the DC motor under test and transporting its output shaft to the clamping end of the clamping component. The braking mechanism 2 is located on one end of the fixture base plate 1, and the clamping component 31 and the positioning component 32 are oppositely arranged on the other end of the fixture base plate 1. The output end of the braking mechanism 2 is connected to the transmission end of the clamping component 31 via a second coupling 5, and the clamping component 31 and the positioning component 32 are in a movable clamping engagement.

[0026] The braking mechanism 2 includes a base frame 21, a fixing plate 22, a torque sensor 23, and a brake 24. The base frame 21 is mounted on one end of the fixture base plate 1. The fixing plate 22 and the torque sensor 23 are respectively mounted on the outer and inner ends of the base frame 21. The brake 24 is mounted on the fixing plate 22, and its output end is connected to the input shaft of the torque sensor 23 via a first coupling 25. The output shaft of the torque sensor 23 is connected to the transmission end of the clamping assembly 31 via a second coupling 5. In this example, the brake 24 is preferably a hysteresis brake. It is used to provide torque output to the clamping assembly.

[0027] The clamping assembly 31 includes a base 311, a sliding member 312, a fixing frame 313, and a shaft gripper 314. The base 311 is mounted on the fixture base plate 1, the sliding member 312 is mounted on the base 311, and in this embodiment, the sliding member 312 is preferably a cylinder. The fixing frame 313 is mounted on the sliding member 312 and connected to its output end. The top end of the fixing frame 313 is connected to the shaft gripper 314, and the transmission end of the shaft gripper 314 is connected to the second coupling 5. In this embodiment, both the first coupling 25 and the second coupling 5 are preferably threaded groove couplings. Specifically, the top end of the fixing frame 313 has a vertically formed U-shaped groove 3131 for accommodating and positioning the shaft gripper 314, and the fixing frame 313 also has cam bearings 3132 on both sides of the U-shaped groove 3131 for supporting the shaft gripper.

[0028] The shaft gripper 314 includes a gripping rod 3141, a gripping sleeve 3142, and a telescopic spring 3143. The driving end of the gripping rod 3141 is connected to the second coupling 5. The gripping end of the gripping rod 3141 is hollow and trumpet-shaped, and has multiple transverse gripping slots 3141A that can be elastically closed or opened around it. The gripping sleeve 3142 is hollow inside and is fitted onto the gripping end of the gripping rod 3141. The telescopic spring 3143 is located on the driving end of the gripping rod 3141 between the second coupling 5 and the gripping sleeve 3142. The outer surface of the gripping sleeve 3142 has a protrusion 3142A that mates with the U-shaped groove 3131. Specifically, the gripping rod... Multiple clamping pieces are fixedly arranged in a ring around the clamping end of 3141, and clamping slots 3141A are formed between the clamping pieces to form a trumpet shape. The sliding member 312 drives the fixed frame 313 to move linearly to the left. The U-shaped groove 3131 cooperates with the protrusion of the clamping sleeve 3142 to drive the shaft jaw 314 to move linearly to the left, so that its clamping end is released. The positioning component 32 sends the output end of the motor to be tested into the clamping end of the shaft jaw 314. The sliding member 312 drives the fixed frame 313 to move linearly to the right, so that the pressure applied by the U-shaped groove 3131 to the protrusion of the clamping sleeve 3142 disappears, thereby realizing the reset of the shaft jaw 314 and clamping the output end of the motor to be tested.

[0029] The clamping assembly 31 further includes a buffer 315; the buffer 315 includes a telescopic rod 3151 fixed to the inner end of the base 311 and a buffer element 3152 provided on the telescopic end of the telescopic rod 3151, wherein the buffer element 3152 is preferably a rubber sheet in this embodiment; used to achieve a tight clamping force between the buffer clamping assembly 31 and the positioning assembly 32, and to avoid impact.

[0030] The positioning component 32 includes a slide rail 321, a sliding seat 322, and a driving component 323. The two slide rails 321 are laterally opposite each other on the fixture base plate 1 and located at the inner end of the clamping component 31. The sliding seat 322 is longitudinally arranged on the two slide rails 321 and its two ends are respectively slidably engaged with the corresponding slide rails 321. The driving component 323 is arranged on the fixture base plate 1 and located at the outer end of the sliding seat 322, and its output end is connected to the sliding seat 322. The top end of the sliding seat 322 has a placement cavity for accommodating the DC motor under test. The driving component 323 drives the sliding seat 322 to move linearly along the slide rail 321 toward the clamping component 31 until the output end of the DC motor under test placed in the placement cavity is clamped by the axial gripper 314.

[0031] The sliding base 322 includes a sliding plate 3221, a lifting slide 3222 for lifting along the Z-axis, a bidirectional translation slide 3223 for translating along the X / Y axes, and a placement platform 3224. The sliding plate 3221 is longitudinally mounted on two slide rails 321, with its two ends slidingly engaged with the corresponding slide rails 321. The lifting slide 3222 is located in the middle of the sliding plate 3221. The bidirectional translation slide 3223 is mounted on the lifting slide 3222, and the placement platform 3224 is mounted on the bidirectional translation slide 3223. A placement cavity is provided on the placement platform 3224. This allows for fine-tuning of the position of the DC motor under test to ensure proper alignment with the clamping assembly 31.

[0032] The positioning component 32 further includes a clamping device 324 for clamping the DC motor under test; the clamping device 324 includes a fixed bracket 3241, a clamping drive 3242, a clamping arm 3243, and a clamping rod 3244; the fixed bracket 3241 is located on the side of the sliding seat 322, the clamping drive 3242 is located on the fixed bracket 3241, the output end of the clamping drive 3242 is connected to one end of the horizontally arranged clamping arm 3243, and the other end of the clamping arm 3243 is connected to the vertically arranged clamping rod 3244. In this embodiment, the clamping drive 3242 is preferably a cylinder; it is used to apply clamping force to the DC motor under test to avoid the problem of loosening during the test.

[0033] The positioning component 32 also includes a barcode scanner 325; the barcode scanner 325 includes a universal magnetic base 3251 and a barcode scanner 3252; the universal magnetic base 3251 is located on the fixture base plate 1 on the side of the sliding seat 322, and the barcode scanner 3252 is located on the adjustment end of the universal magnetic base 3251; it is used to scan the QR code label name on the DC motor under test, and to organize and record the test data (no-load performance and load performance data) of the DC motor under test for subsequent traceability.

[0034] It also includes a control system 4 for controlling the working state of the braking mechanism 2 and the clamping and positioning mechanism 3. The control system 4 includes a power supply system 41 for power supply, an industrial control host 42 for control and issuing commands, a display 43 for displaying detailed parameters of the no-load and load performance of the DC motor, a button panel 44 for controlling various functions of the fixture, and a single-channel full-function test box 45 for providing DC motor test data. The industrial control host 42 is electrically connected to the power supply system 41, the display 43, the button panel 44, the single-channel full-function test box 45, and the control braking mechanism 2 and the clamping and positioning mechanism 3, thereby realizing the automated control function of the fixture.

[0035] This utility model also provides a DC motor testing device, including a body 10 and the above-mentioned testing fixture; the testing fixture is disposed on the body 10; the specific structure of the testing fixture refers to the above embodiments. Since this DC motor testing device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0036] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A DC motor testing fixture, characterized in that: The fixture includes a base plate (1), a braking mechanism (2), and a clamping and positioning mechanism (3). The clamping and positioning mechanism (3) includes a clamping component (31) and a positioning component (32). The braking mechanism (2) is located on one end of the base plate (1), and the clamping component (31) and the positioning component (32) are located opposite each other on the other end of the base plate (1). The output end of the braking mechanism (2) is connected to the transmission end of the clamping component (31) through a second coupling (5). The clamping component (31) and the positioning component (32) are in a movable clamping engagement.

2. The DC motor testing fixture according to claim 1, characterized in that: The braking mechanism (2) includes a base frame (21), a fixing plate (22), a torque sensor (23), and a brake (24). The base frame (21) is located on one end of the fixture base plate (1). The fixing plate (22) and the torque sensor (23) are located on the outer and inner ends of the base frame (21), respectively. The brake (24) is located on the fixing plate (22), and its output end is connected to the input shaft of the torque sensor (23) through a first coupling (25). The output shaft of the torque sensor (23) is connected to the transmission end of the clamping assembly (31) through a second coupling (5).

3. A DC motor testing fixture according to claim 1 or 2, characterized in that: The clamping assembly (31) includes a base (311), a sliding member (312), a fixing frame (313), and a shaft gripper (314). The base (311) is mounted on the fixture base plate (1), the sliding member (312) is mounted on the base (311), the fixing frame (313) is mounted on the sliding member (312) and connected to its output end, and the top end of the fixing frame (313) is connected to the shaft gripper (314). The transmission end of the shaft gripper (314) is connected to the second coupling (5).

4. A DC motor testing fixture according to claim 3, characterized in that: The top of the fixing frame (313) is vertically provided with a U-shaped groove (3131), and cam bearings (3132) are also provided on both sides of the U-shaped groove (3131) on the fixing frame (313).

5. A DC motor testing fixture according to claim 4, characterized in that: The shaft gripper (314) includes a gripping rod (3141), a gripping sleeve (3142), and a telescopic spring (3143). The driving end of the gripping rod (3141) is connected to the second coupling (5). The gripping end of the gripping rod (3141) is hollow and trumpet-shaped, and has multiple transverse gripping slots (3141A) that can be elastically closed or released. The gripping sleeve (3142) is hollow inside and is sleeved on the gripping end of the gripping rod (3141). The telescopic spring (3143) is located on the driving end of the gripping rod (3141) between the second coupling (5) and the gripping sleeve (3142). The outer surface of the gripping sleeve (3142) has a protrusion (3142A) that cooperates with the U-shaped groove (3131).

6. A DC motor testing fixture according to claim 3, characterized in that: The clamping assembly (31) further includes a buffer (315); the buffer (315) includes a telescopic rod (3151) fixed to the inner end of the base (311) and a buffer element (3152) provided on the telescopic end of the telescopic rod (3151).

7. A DC motor testing fixture according to claim 1, characterized in that: The positioning component (32) includes a slide rail (321), a sliding seat (322), and a driving component (323); the two slide rails (321) are laterally opposite each other on the fixture base plate (1) and located at the inner end of the clamping component (31); the sliding seat (322) is longitudinally arranged on the two slide rails (321) and its two ends are respectively slidably engaged with the corresponding slide rails (321); the driving component (323) is arranged on the fixture base plate (1) and located at the outer end of the sliding seat (322) and its output end is connected to the sliding seat (322); the top end of the sliding seat (322) is provided with a placement cavity.

8. A DC motor testing fixture according to claim 7, characterized in that: The positioning assembly (32) further includes a clamping device (324); the clamping device (324) includes a fixed bracket (3241), a clamping drive (3242), a clamping arm (3243), and a clamping rod (3244); the fixed bracket (3241) is located on the side of the sliding seat (322), the clamping drive (3242) is located on the fixed bracket (3241), the output end of the clamping drive (3242) is connected to one end of the horizontally arranged clamping arm (3243), and the other end of the clamping arm (3243) is connected to the vertically arranged clamping rod (3244).

9. A DC motor testing fixture according to claim 8, characterized in that: The positioning component (32) also includes a barcode scanner (325); the barcode scanner (325) includes a universal magnetic base (3251) and a barcode scanner (3252); the universal magnetic base (3251) is located on the bottom plate (1) of the fixture and is situated on the side of the sliding seat (322), and the barcode scanner (3252) is located on the adjustment end of the universal magnetic base (3251).

10. A DC motor testing device, characterized in that: Includes a body (10) and a test fixture as described in any one of claims 1-9; the test fixture is disposed on the body (10).

Images