Differential torque testing device

Abstract

The utility model relates to the technical field of differential torque testing, in particular to a differential torque testing device which comprises a testboard and an installation mechanism, a supporting frame is installed on the top of the testboard, an electric push rod is fixedly connected to the inner top wall of the supporting frame, and a testing block is fixedly connected to the telescopic end of the electric push rod. A torque conversion wrench is hinged to the bottom of the test block; and the mounting mechanism is arranged at the top of the test board. According to the device, the differential can be rapidly installed on the torque testing device through the insertion rod, the sliding block, the installation block, the clamping rod, the connecting disc and the driving disc, compared with the existing mode that the differential needs to be installed on the torque testing device by rotating a plurality of bolts, the mode is more convenient to install the differential, and the torque testing efficiency of the differential is improved.

Description

Technical Field

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

[0002] The differential is a crucial component in a vehicle's drivetrain, allowing the left and right drive wheels to rotate at different speeds, thereby improving vehicle stability and handling during cornering. After production, a differential is typically tested using a torque tester to measure torque output under various operating conditions to verify its conformity.

[0003] After searching, the Chinese patent "One-end test bench and device for differential" authorization announcement number "CN220982685U" realizes the installation of the differential and the testing of the differential torque through the torque conversion arm, the third threaded fastener, the bracket body, the rod, the mounting plate, and the fourth threaded fastener, ensuring stability during the test.

[0004] In the above patent, the torque conversion arm is installed on the differential by rotating multiple third threaded fasteners, and then the differential is installed on the bracket body by rotating multiple fourth threaded fasteners. This makes it too inconvenient to install the differential on the torque testing device, thereby reducing the efficiency of the differential torque test.

[0005] Therefore, a differential torque testing device is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the present invention is to provide a differential torque testing device in order to solve the above problems, thereby improving the problem that it is too inconvenient to install the differential on the torque testing device.

[0007] The present invention achieves the above-mentioned purpose through the following technical solutions, a differential torque testing device comprising:

[0008] A test bench, wherein a support frame is installed on the top of the test bench, an electric push rod is fixedly connected to the inner top wall of the support frame, a test block is fixedly connected to the telescopic end of the electric push rod, and a torque conversion wrench is hinged to the bottom of the test block;

[0009] The top of the two sliders slides through the two avoidance grooves and is fixedly connected to the mounting blocks. The inner side surfaces of the two mounting blocks are rotatably connected to the connecting disks. The inner side surface of each of the connecting disks is fixedly connected to a plurality of annularly distributed clamping rods. The front side surface of the torque conversion wrench is fixedly connected to a plurality of annularly distributed plug rods. The middle part of the inner bottom wall of the slide is provided with a rotating groove, and a driving disk is rotatably provided in the rotating groove. The bottom of the inner side surface of the slider is fixedly connected to the slide rod, and the top surface of the driving disk is provided with two arc holes. The bottom of the end of the slide rod away from the slider is fixedly connected to the rotating rod, and the two rotating rods are respectively arranged in the two arc holes for sliding connection.

[0010] During use, the differential is quickly installed on the torque testing device through the insertion rod, slider, mounting block, clamping rod, connecting plate and driving plate. Compared with the existing method of requiring multiple bolts to be rotated, which makes it too inconvenient to install the differential on the torque testing device, this method is more convenient to install the differential and improves the efficiency of differential torque testing.

[0011] Preferably, the torque converter wrench has a cavity inside, in which a disc is rotatably connected. The interior of the insertion rod is a hollow structure. The front side of the disc is fixedly provided with a plurality of annularly distributed connecting rods. The ends of the connecting rods slide through and extend into the interior of the insertion rod and are fixedly connected to a stop block. The end of the stop block slides through and extends to the outside of the insertion rod. The rear side of the torque converter wrench is threadedly connected to a screw. The front end of the screw thread extends through and extends into the cavity and is fixedly connected to the rear side of the disc. The screw, stop block, and disc enable the differential to be quickly installed on the torque converter wrench, making installation of the differential on the torque converter wrench more convenient and labor-saving.

[0012] Preferably, a servo motor is fixedly provided inside the slide groove of the test bench, and the output shaft of the servo motor is vertically downward and fixedly connected to the top end of the driving disk.

[0013] Preferably, the outer side of the connecting plate is fixedly connected to a gear via a rotating shaft. The rotating shaft rotates through the mounting block, and the bottom side of the gear is meshed with a gear rack. Through the gear and gear rack, the two connecting plates can rotate simultaneously, allowing the two sets of clamping rods to be accurately and quickly inserted into the flange holes on the differential, avoiding the tediousness of one-by-one alignment.

[0014] Preferably, the tops of the two sliders are provided with through-holes, and a U-shaped rod is fixedly connected between the two gear racks. The ends of the gear rack transverse plates slide through the two through-holes, and the top of the U-shaped rod vertical plate is connected to the bottom of the gear rack. The through-holes provide support and positioning for the gear rack, preventing it from separating from the gear surface.

[0015] Preferably, a round rod is fixedly connected to the top side of the circumferential surface of the connecting disk.

[0016] Preferably, the end of the clamping rod away from the connecting disk and the end of the insertion rod away from the torque conversion wrench are both in a frustum shape.

[0017] Preferably, a driven block is fixedly connected to the outer wall of the screw, and two stop blocks are fixedly connected to the rear side of the torque converter wrench, with the top of the driven block located between the two stop blocks. The driven block and the stop blocks limit the rotation angle of the disc, ensuring that the stop block moves accurately and contacts the flange on the differential.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model realizes the rapid installation of the differential on the torque test device through the insertion rod, slider, mounting block, clamping rod, connecting plate and driving plate. Compared with the existing method that requires rotating multiple bolts to make the differential installed on the torque test device too inconvenient, this method is more convenient to install the differential and improves the efficiency of differential torque testing.

[0020] The utility model realizes the rapid installation of the differential on the torque conversion wrench through the screw, the block and the disc, and the installation of the differential on the torque conversion wrench is more convenient and labor-saving; through the gear and the gear rack, the two connecting plates can be rotated simultaneously, so that the two sets of clamping rods can be accurately and quickly inserted into the flange holes on the differential, avoiding the tediousness of aligning one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a cross-sectional view of the test bench of the present utility model;

[0023] Figure 3 for Figure 2 A magnified view of middle A;

[0024] Figure 4 This is a schematic diagram of the installation mechanism structure of the present utility model.

[0025] In the figure: 1. Test bench; 2. Electric push rod; 3. Test block; 4. Torque conversion wrench; 5. Mounting mechanism; 51. Slider; 52. Mounting block; 53. Connecting plate; 54. Clamping rod; 55. Inserting rod; 56. Driving plate; 57. Servo motor; 58. Stop block; 59. Disc; 510. Screw; 511. Gear; 512. Gear rack; 513. Driven block; 514. Limit block; 515. Round rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] When implementing: Figure 1-4 As shown, a differential torque testing device includes: a test bench 1 and a mounting mechanism 5. A support frame is installed on the top of the test bench 1, an electric push rod 2 is fixedly connected to the inner top wall of the support frame, a test block 3 is fixedly connected to the telescopic end of the electric push rod 2, and a torque conversion wrench 4 is hinged to the bottom of the test block 3; the mounting mechanism 5 is arranged on the top of the test bench 1, and a display screen is also provided on one side of the test bench 1, which is used to analyze the test data through the corresponding software in the display screen, generate a test report and display it on the screen, and evaluate the performance of the differential.

[0028] The mounting mechanism 5 includes a slider 51. A chute is defined within the top of the test bench 1. A bypass slot is defined within the top of the test bench 1, connecting the chute. Two sliders 51 are slidably mounted within the chute. The tops of the two sliders 51 slide through the two bypass slots and are fixedly connected to mounting blocks 52. The inner surfaces of the two mounting blocks 52 are rotatably connected to connecting plates 53. The inner surfaces of each connecting plate 53 are fixedly connected to a plurality of annularly distributed clamping rods 54. The front side of the torque converter wrench 4 is fixedly connected to a plurality of annularly distributed plug rods 55. A rotating slot is defined in the middle of the inner bottom wall of the chute. A drive disk 56 is rotatably mounted within the rotating slot. The bottom of the inner surface of the sliders 51 is fixedly connected to the sliding rods. The top surface of the drive disk 56 has two arc-shaped holes. A rotating rod is fixedly connected to the bottom of the end of the slider away from the slider 51. The two rotating rods are respectively arranged in the two arc-shaped holes and slidably connected. A servo motor 57 is fixedly mounted within the chute of the test bench 1. The output shaft of the servo motor 57 faces vertically downward and is fixedly connected to the top of the drive disk 56. The end of the clamping rod 54 away from the connecting plate 53 and the end of the inserting rod 55 away from the torque conversion wrench 4 are both in a frustum shape.

[0029] A torque sensor and a displacement sensor are provided on the top of the test block 3 , and the slider 51 and the mounting block 52 are connected by bolts.

[0030] When the torque test of the differential is required, the rod is inserted into the inner side of the flange at one end of the differential, and the flange at one end of the differential is made to contact the front side of the torque conversion wrench 4. At this time, the servo motor 57 is manually turned on, and the output shaft of the servo motor 57 rotates to drive the driving disk 56 to rotate. The rotation of the driving disk 56 drives the two sliders 51 to move closer to each other. The movement of the slider 51 drives the mounting block 52, the connecting disk 53 and the clamping rod 54 to move, so that the clamping rod 54 is clamped into the flange on the differential; the servo motor 57 is manually turned off, and the electric push rod 2 is manually turned on. The telescopic end of the electric push rod 2 moves downward to drive the test block 3 to move downward. The test block 3 moves downward and applies thrust to the first end of the torque conversion wrench 4, so that the first end of the torque conversion wrench 4 rotates around the central axis of one end of the differential. The torque conversion wrench 4 converts the thrust it receives into torque to act on one end of the differential, so that one end of the differential is twisted. The torque sensor continuously detects the thrust value of the test block 3, and the displacement sensor continuously detects the downward position of the test block 3. The test data is analyzed by the corresponding software in the display screen, and a test report is generated and displayed on the screen to evaluate the performance of the differential. According to the above process, multiple tests are carried out to ensure the performance consistency of the differential under different working conditions.

[0031] like Figure 4 As shown, the torque converter wrench 4 has a cavity inside, in which a disc 59 is rotatably connected and movable within the cavity. The interior of the insertion rod 55 is hollow, and a plurality of annular connecting rods are fixedly mounted on the front side of the disc 59. The ends of the connecting rods slide through and extend into the interior of the insertion rod 55 and are fixedly connected to a stopper 58. The end of the stopper 58 slides through and extends to the outside of the insertion rod 55. The rear side of the torque converter wrench 4 is threadedly connected to a screw 510. The front end of the screw 510 threads through and extends into the cavity and is fixedly connected to the rear side of the disc 59. A driven block 513 is fixedly connected to the outer wall of the screw 510. Two stoppers 514 are fixedly mounted on the rear side of the torque converter wrench 4, with the top of the driven block 513 located between the two stoppers 514. The insertion rod 55 has a waist-shaped hole that communicates with the interior, and the end of the stopper 58 can slide and rotate within the waist-shaped hole.

[0032] When in use, in the initial state, the top of the driven block 513 is in contact with one of the limit blocks 514; by rotating the screw 510, the screw 510 moves while rotating on the torque conversion wrench 4, the screw 510 moves while rotating and drives the disc 59 to rotate, and the rotation of the disc 59 drives the block 58 and the driven block 513 to move while rotating, so that the rear side of the block 58 abuts against the side of the flange at one end of the differential, and when the driven block 513 abuts against the other limit block 514, the screw 510 stops rotating.

[0033] like Figure 3As shown, the outer side of the connecting plate 53 is fixedly connected to a gear 511 via a rotating shaft. The rotating shaft rotates through the mounting block 52, and the bottom side of the gear 511 is meshed with a gear rack 512. The tops of the two sliders 51 are provided with through holes, and a U-shaped rod is fixedly connected between the two gear racks 512. The ends of the horizontal plates of the gear rack 512 slide through the two through holes, and the top of the vertical plate of the U-shaped rod is connected to the bottom of the gear rack 512. A round rod 515 is fixedly connected to the top side of the circumferential surface of the connecting plate 53.

[0034] When in use, by pushing one of the round rods 515, one of the round rods 515 rotates in a circle, driving one of the connecting plates 53 and one of the gears 511 to rotate, and driving multiple clamping rods 54 to rotate in a circle, one of the gears 511 rotates and drives another gear rack 512 to move through the U-shaped rod, and the other gear rack 512 drives another gear 511 to rotate, causing the other connecting plate 53 to rotate, so that the two sets of clamping rods 54 are aligned with the flange holes on the differential at the same time, so that the two sets of clamping rods 54 can be accurately and quickly inserted into the flange holes on the differential.

[0035] When the utility model is in use, the insertion rod 55 is passed through the flange at one end of the differential and the flange at one end of the differential is brought into contact with the torque conversion wrench 4, pushing one of the round rods 515. The circular rotation of one of the round rods 515 drives the other gear 511 to rotate through the transmission of the U-shaped rod and the gear rack 51, so that the other connecting plate 53 rotates, so that the two sets of clamping rods 54 are aligned with the flange holes on the differential at the same time; then the servo motor 57 is manually turned on, and the output shaft of the servo motor 57 rotates to drive the two sliders 51 to move closer to each other, and the sliders The movement of 51 drives the mounting block 52, the connecting disc 53 and the clamping rod 54 to move, so that the two sets of clamping rods 54 can be accurately and quickly inserted into the flange holes on the differential; then the servo motor 57 is manually turned off, and the screw 510 is rotated. The screw 510 moves while rotating on the torque conversion wrench 4 and drives the disc 59 to rotate. The rotation of the disc 59 drives the block 58 to move while rotating, so that the rear side of the block 58 abuts against the side of the flange at one end of the differential. When the driven block 513 abuts against another limit block 514, the screw 510 stops rotating.

[0036] It should be noted that the test bench 1, electric push rod 2, servo motor 57, test block 3, torque sensor, displacement sensor, etc. in the above description are all devices with relatively mature application of existing technologies. The specific models can be selected according to actual needs. At the same time, the electric push rod 2, servo motor 57, torque sensor and displacement sensor can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0037] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A differential torque testing device, characterized in that: include: A test bench (1), wherein a support frame is installed on the top of the test bench (1), an electric push rod (2) is fixedly connected to the inner top wall of the support frame, a test block (3) is fixedly connected to the telescopic end of the electric push rod (2), and a torque conversion wrench (4) is hinged to the bottom of the test block (3); The mounting mechanism (5) is arranged on the top of the test bench (1), and the mounting mechanism (5) includes a slider (51). A slide groove is provided inside the top of the test bench (1), and an avoidance groove connected to the slide groove is provided on the top of the test bench (1). Two sliders (51) are slidably installed inside the slide groove. The tops of the two sliders (51) slide through the two avoidance grooves respectively and are fixedly connected to the mounting blocks (52). The inner sides of the two mounting blocks (52) are rotatably connected to the connecting disks (53). Each of the connecting disks The inner side surface of (53) is fixedly connected with a plurality of annularly distributed clamping rods (54), the front side surface of the torque conversion wrench (4) is fixedly connected with a plurality of annularly distributed plug rods (55), a rotating groove is provided in the middle of the inner bottom wall of the slide, and a driving disk (56) is provided in the rotating groove for rotation. The bottom of the inner side surface of the slider (51) is fixedly connected to the slide rod, and the top surface of the driving disk (56) is provided with two arc holes. The bottom of the end of the slide rod away from the slider (51) is fixedly connected with a rotating rod, and the two rotating rods are respectively arranged in the two arc holes for sliding connection.

2. The differential torque testing device according to claim 1, characterized in that: The torque conversion wrench (4) is provided with a cavity inside, and a disc (59) is rotatably connected in the cavity. A plurality of annularly distributed connecting rods are fixedly provided on the front side of the disc (59). The ends of the connecting rods slide through and extend into the interior of the insertion rod (55) and are fixedly connected to a stop block (58). The ends of the stop block (58) slide through and extend to the outside of the insertion rod (55). The rear side of the torque conversion wrench (4) is threadedly connected to a screw rod (510). The front end thread of the screw rod (510) extends through and extends into the cavity and is fixedly connected to the rear side of the disc (59).

3. The differential torque testing device according to claim 1, characterized in that: A servo motor (57) is fixedly provided inside the slideway of the test bench (1), and the output shaft of the servo motor (57) is vertically downward and fixedly connected to the top end of the driving disc (56).

4. The differential torque testing device according to claim 1, characterized in that: The outer side surface of the connecting disk (53) is fixedly connected to a gear (511) via a rotating shaft, and the bottom side of the gear (511) is meshedly connected to a gear rack (512).

5. The differential torque testing device according to claim 4, characterized in that: A through hole is provided at the top of the two sliders (51), a U-shaped rod is fixedly connected between the two gear racks (512), the two ends of the horizontal plate of the gear rack (512) slide through the two through holes respectively, and the top of the vertical plate of the U-shaped rod is connected to the bottom of the gear rack (512).

6. The differential torque testing device according to claim 1, characterized in that: A round rod (515) is fixedly connected to the top side of the circumferential surface of the connecting disk (53).

7. The differential torque testing device according to claim 1, characterized in that: The end of the clamping rod (54) away from the connecting disk (53) and the end of the inserting rod (55) away from the torque conversion wrench (4) are both in a frustum shape.

8. The differential torque testing device according to claim 2, characterized in that: A driven block (513) is fixedly connected to the outer wall of the screw rod (510), and two limit blocks (514) are fixedly connected to the rear side of the torque conversion wrench (4), with the top of the driven block (513) located between the two limit blocks (514).

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