A differential gear backlash testing device

Abstract

This utility model discloses a differential gear backlash testing device, which includes a main body. The upper surface of the main body has a mounting groove, in which a differential is installed. A left half-shaft is fixedly connected to the left surface of the differential, and a right half-shaft is fixedly connected to the right surface of the differential. Clamping mechanisms are provided on the front and rear sides of the differential, and an adjustment mechanism is provided on the left side of the differential. A controller is fixedly connected to the front surface of the main body. Through this structure, by incorporating the controller, adjustment mechanism, clamping mechanism, and high-resolution encoder, the problems of slow speed, low efficiency, low accuracy, and poor stability in manual differential gear backlash testing can be effectively solved. The precise connection between the servo reducer, torque sensor, and high-resolution encoder with the controller enables automated and high-precision measurement of differential gear backlash, greatly improving testing efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of differential testing technology, specifically a differential gear backlash testing device. Background Technology

[0002] The differential is a crucial component of a car's transmission system, enabling the left and right drive wheels to rotate at different speeds. When a car is turning or driving on uneven surfaces, the differential ensures that the wheels on both sides rotate with a suitable speed difference, thereby preventing tire slippage and improving vehicle stability and handling.

[0003] Existing methods for measuring and judging differential gear clearance mostly rely on manual inspection, which suffers from problems such as slow speed, low efficiency, low accuracy, and poor stability. Utility Model Content

[0004] This invention provides a differential gear backlash testing device, which can effectively solve the problems of slow speed, low efficiency, low accuracy, and poor stability in the manual detection of differential gear backlash. Through the precise connection of a servo reducer, torque sensor, and high-resolution encoder with the controller, it realizes automated and high-precision measurement of differential gear backlash, greatly improving detection efficiency and accuracy.

[0005] To achieve the above objectives, a differential gear backlash testing device is provided, comprising a main body. The upper surface of the main body has a mounting groove, in which a differential is mounted. A left half-shaft is fixedly connected to the left surface of the differential, and a right half-shaft is fixedly connected to the right surface of the differential. Clamping mechanisms are provided on the front and rear sides of the differential, each clamping mechanism including a hydraulic push rod, a second fixing block, and a clamping plate. An adjustment mechanism is provided on the left side of the differential, comprising a servo reducer, a first fixing block, a drive shaft, a torque sensor, and a first sleeve. A controller is fixedly connected to the front surface of the main body. The mounting groove facilitates differential installation, the clamping mechanisms secure the differential, the adjustment mechanisms detect differential gear backlash, and the controller enables automated control and data acquisition of the entire testing device.

[0006] According to the differential gear backlash testing device, a second sleeve is installed at the end of the right half-shaft away from the differential. A connecting shaft is installed on the second sleeve away from the right half-shaft. A high-resolution encoder is fixedly connected to the end of the connecting shaft away from the second sleeve. A third fixing block is fixedly connected to the lower surface of the high-resolution encoder. The second sleeve is used to quickly connect the right half-shaft and the connecting shaft. The high-resolution encoder is used to detect the rotation angle. The third fixing block is used to mount and fix the high-resolution encoder.

[0007] According to the differential gear backlash testing device, the first fixing block is fixedly connected to the upper surface of the main body, the servo reducer is fixedly connected to the upper surface of the first fixing block, and the drive shaft is fixedly connected to the output end inside the servo reducer. The servo reducer is provided to facilitate control of rotational torque and angle, and the first fixing block is provided to facilitate the installation and fixation of the servo reducer.

[0008] According to the differential gear backlash testing device, the torque sensor is fixedly connected to the end of the drive shaft away from the servo reducer, and the first sleeve is installed between the torque sensor and the left half-shaft. The drive shaft is used to facilitate power transmission, and the torque sensor is used to detect the rotational torque of the left half-shaft.

[0009] According to the differential gear backlash testing device, the second fixing block is fixedly connected to the upper surface of the main body, the hydraulic push rod is fixedly connected to the upper surface of the second fixing block, and the clamping plate is fixedly connected to the output end of the hydraulic push rod. The hydraulic push rod and clamping plate are provided to facilitate the clamping of the differential.

[0010] According to the differential gear backlash testing device, connecting rods are fixedly connected around the perimeter of the upper surface of the main body, and a grating is fixedly connected to the inner side of the connecting rods. A support rod is fixedly connected to the lower surface of the main body. The grating is used to prevent operators from accidentally entering the testing area and causing safety accidents.

[0011] According to the differential gear backlash testing device, the servo reducer is connected to the controller via a data cable, the torque sensor is connected to the controller via a data cable, the high-resolution encoder is connected to the controller via a data cable, and the grating is connected to the controller via a data cable. The data cables are used to facilitate data transmission.

[0012] The beneficial effects of this utility model are as follows: By setting up a controller, adjustment mechanism, clamping mechanism and high-resolution encoder, the problems of slow speed, low efficiency, low accuracy and poor stability in the process of manually detecting differential gear clearance can be effectively solved. Through the precise connection between the servo reducer, torque sensor and high-resolution encoder and the controller, the automated and high-precision measurement of differential gear clearance is realized, which greatly improves the detection efficiency and accuracy.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a front perspective view of a differential gear backlash testing device according to the present invention. Figure 2 This is a partial three-dimensional view of a differential gear backlash testing device according to the present invention; Figure 3 This is a three-dimensional structural view of the adjustment mechanism of a differential gear backlash testing device according to the present invention; Figure 4 This is a three-dimensional structural view of the clamping mechanism of a differential gear backlash testing device according to the present invention. Figure 5 This utility model Figure 2 A magnified view of A in the middle.

[0015] Legend: 1. Connecting rod; 2. Grating; 3. Main body; 4. Controller; 5. Support rod; 6. Adjustment mechanism; 601. Servo reducer; 602. First fixing block; 603. Drive shaft; 604. Torque sensor; 605. First sleeve; 7. Left half shaft; 8. Differential; 9. Clamping mechanism; 901. Hydraulic push rod; 902. Second fixing block; 903. Clamping plate; 10. Right half shaft; 11. Second sleeve; 12. Connecting shaft; 13. High-resolution encoder; 14. Third fixing block; 15. Mounting slot. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figures 1 to 5This utility model discloses a differential gear backlash testing device, which includes a main body 3. The upper surface of the main body 3 is provided with a mounting groove 15, and a differential 8 is installed in the mounting groove 15. A left half-shaft 7 is fixedly connected to the left surface of the differential 8, and a right half-shaft 10 is fixedly connected to the right surface of the differential 8. Clamping mechanisms 9 are provided on the front and rear sides of the differential 8. The clamping mechanism 9 includes a hydraulic push rod 901, a second fixing block 902, and a clamping plate 903. An adjustment mechanism 6 is provided on the left side of the differential 8. The adjustment mechanism 6 includes a servo reducer 601, a first fixing block 602, a transmission shaft 603, a torque sensor 604, and a first sleeve 605. A controller 4 is fixedly connected to the front surface of the main body 3.

[0018] A second sleeve 11 is installed at the end of the right half-shaft 10 away from the differential 8. A connecting shaft 12 is installed at the second sleeve 11 away from the right half-shaft 10. A high-resolution encoder 13 is fixedly connected at the end of the connecting shaft 12 away from the second sleeve 11. A third fixing block 14 is fixedly connected to the lower surface of the high-resolution encoder 13.

[0019] The first fixing block 602 is fixedly connected to the upper surface of the main body 3, the servo reducer 601 is fixedly connected to the upper surface of the first fixing block 602, the drive shaft 603 is fixedly connected to the output end inside the servo reducer 601, the torque sensor 604 is fixedly connected to the end of the drive shaft 603 away from the servo reducer 601, and the first sleeve 605 is installed between the torque sensor 604 and the left half shaft 7.

[0020] The second fixing block 902 is fixedly connected to the upper surface of the main body 3, the hydraulic push rod 901 is fixedly connected to the upper surface of the second fixing block 902, and the clamping plate 903 is fixedly connected to the output end of the hydraulic push rod 901.

[0021] Connecting rods 1 are fixedly connected around the upper surface of the main body 3, and gratings 2 are fixedly connected to the inner side of the connecting rods 1. Support rods 5 are fixedly connected to the lower surface of the main body 3.

[0022] The servo reducer 601 is connected to the controller 4 via a data cable, the torque sensor 604 is connected to the controller 4 via a data cable, the high-resolution encoder 13 is connected to the controller 4 via a data cable, and the grating 2 is connected to the controller 4 via a data cable.

[0023] Working principle: In use, the differential 8 to be tested is installed in the mounting slot 15. The adjusting mechanism 6 is connected to the left half shaft 7 through the first sleeve 605, and the connecting shaft 12 is connected to the right half shaft 10 through the second sleeve 11. The hydraulic push rod 901 is activated to clamp the differential 8. The servo reducer 601 is controlled by the controller 4 to rotate a certain angle so that the torque sensor 604 reaches a stable torque value, which indicates that the gear surface has made contact and is recorded as zero point. Then, the servo reducer 601 is controlled by the controller 4 to rotate a certain angle. The controller 4 collects the rotation angle after the zero point of the high-resolution encoder 13, and the angular displacement clearance of the gear pair can be analyzed.

[0024] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A differential gear backlash testing device, comprising a main body (3), characterized in that, The upper surface of the main body (3) is provided with a mounting groove (15), and a differential (8) is installed in the mounting groove (15). A left half shaft (7) is fixedly connected to the left surface of the differential (8), and a right half shaft (10) is fixedly connected to the right surface of the differential (8). Clamping mechanisms (9) are provided on the front and rear sides of the differential (8). The clamping mechanism (9) includes a hydraulic push rod (901), a second fixing block (902), and a clamping plate (903). An adjustment mechanism (6) is provided on the left side of the differential (8). The adjustment mechanism (6) includes a servo reducer (601), a first fixing block (602), a drive shaft (603), a torque sensor (604), and a first sleeve (605). A controller (4) is fixedly connected to the front surface of the main body (3).

2. The differential gear backlash testing device according to claim 1, characterized in that, A second sleeve (11) is installed at the end of the right half shaft (10) away from the differential (8). A connecting shaft (12) is installed at the second sleeve (11) away from the right half shaft (10). A high-resolution encoder (13) is fixedly connected at the end of the connecting shaft (12) away from the second sleeve (11). A third fixing block (14) is fixedly connected to the lower surface of the high-resolution encoder (13).

3. The differential gear backlash testing device according to claim 1, characterized in that, The first fixing block (602) is fixedly connected to the upper surface of the main body (3), the servo reducer (601) is fixedly connected to the upper surface of the first fixing block (602), and the transmission shaft (603) is fixedly connected to the output end inside the servo reducer (601).

4. The differential gear backlash testing device according to claim 1, characterized in that, The torque sensor (604) is fixedly connected to the end of the drive shaft (603) away from the servo reducer (601), and the first sleeve (605) is installed between the torque sensor (604) and the left half shaft (7).

5. A differential gear backlash testing device according to claim 1, characterized in that, The second fixing block (902) is fixedly connected to the upper surface of the main body (3), the hydraulic push rod (901) is fixedly connected to the upper surface of the second fixing block (902), and the clamping plate (903) is fixedly connected to the output end of the hydraulic push rod (901).

6. A differential gear backlash testing device according to claim 2, characterized in that, Connecting rods (1) are fixedly connected around the upper surface of the main body (3), and gratings (2) are fixedly connected to the inner side of the connecting rods (1). Support rods (5) are fixedly connected to the lower surface of the main body (3).

7. A differential gear backlash testing device according to claim 6, characterized in that, The servo reducer (601) is connected to the controller (4) via a data cable, the torque sensor (604) is connected to the controller (4) via a data cable, the high-resolution encoder (13) is connected to the controller (4) via a data cable, and the grating (2) is connected to the controller (4) via a data cable.

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