Loading mechanism for strength test of automobile seat framework

Abstract

The utility model discloses an automobile seat framework strength test loading mechanism. Comprising a workbench, a first supporting seat, a first driving motor, a first bearing seat, a first driving shaft, a first driving wheel, a first driven wheel, a first transmission belt, a second supporting seat, a second driven wheel, a third supporting seat, a second driving wheel, a second transmission belt, a swing arm, a third driven wheel, a third driving wheel, a third transmission belt, a loading shaft, a guide seat and a transmission block. According to the test loading mechanism, the swing arm is driven to rotate through the first driving motor, the loading shaft is synchronously driven to apply loading pressure to the automobile seat framework, the strength of the automobile seat framework can be tested after electrification, and compared with a test mode that a hydraulic cylinder is matched with a hydraulic station, the test loading mechanism has the advantages of being low in cost and low in requirement for the size of a test space.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile seat testing, in particular to a loading mechanism for testing the strength of an automobile seat frame. Background Art

[0002] After the car seat frame is processed and formed, it is assembled with the whole car. Before assembly, the strength of the car seat frame and the strength of the mounting holes need to be tested. The whole machine can be assembled only after the test is qualified. At present, the strength test of the car seat frame is carried out by hydraulic cylinder loading pressure test. The test head is driven by the reciprocating motion of the hydraulic cylinder piston to reciprocate and continuously test the strength of the car seat frame. The hydraulic cylinder usually needs to be equipped with a hydraulic station, and the use cost of the hydraulic station is relatively high. In addition, the hydraulic station and the layout of hydraulic pipelines have certain requirements on the size of the test site space. It cannot meet the use requirements of low-cost and small test space testing. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a loading mechanism for testing the strength of an automobile seat frame which has low cost and low requirements on the test space size.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: a loading mechanism for testing the strength of a car seat frame, comprising a workbench, a first support seat, a first drive motor, a first bearing seat, a first drive shaft, a first driving wheel, a first driven wheel, a first transmission belt, a second support seat, a second driven wheel, a third support seat, a second driving wheel, a second transmission belt, a swing arm, a third driven wheel, a third driving wheel, a third transmission belt, a loading shaft, a guide seat and a transmission block, the first bearing seat, the second support seat and the third support seat are all fixedly mounted on the workbench, the first drive motor and the two first support seats are all fixedly mounted on the first bearing seat, the two ends of the central axis of the first driving wheel are rotatably mounted on the two first support seats, the output shaft of the first drive motor is transmission-connected to the central axis of the first driving wheel, the two ends of the first drive shaft are rotatably mounted on the third support seat, the second driving wheel is fixedly mounted on the workbench, The fixed sleeve is installed at both ends of the first driving shaft, the first driven wheel is fixedly sleeved and installed in the middle of the first driving shaft, the first driven wheel is connected to the first driving wheel through a first transmission belt, the two ends of the middle shaft of the second driven wheel are rotatably installed on the second support seat, the second driven wheel is connected to the second driving wheel through a second transmission belt, the lower part of the swing arm is fixedly installed on the inner end of the middle shaft of the second driven wheel, the second driving motor is fixedly installed on the swing arm, the third driven wheel and the third driving wheel are both rotatably installed on the swing arm through their rotating shafts, the output shaft of the second driving motor is connected to the middle shaft of the third driving wheel, the third driven wheel is connected to the third driving wheel through a third transmission belt, the guide seat is slidably sleeved and installed on the swing arm, the two ends of the loading shaft are fixedly installed on the guide seat, the transmission block is fixedly installed on the guide seat, and the transmission block is also connected to the third transmission belt.

[0005] Furthermore, it also includes a sensor bracket, a baffle, a laser ranging sensor and a control module. The sensor bracket is fixedly mounted on the second support seat. The sensor bracket is also provided with an arc-shaped groove, which is coaxially arranged with the central axis of the second driven wheel. At least three laser ranging sensors are screwed and fixedly mounted in the arc-shaped groove. The laser ranging sensor and the first drive motor are respectively connected to the control module through circuits.

[0006] Furthermore, a loading sleeve is fixedly mounted on the loading shaft.

[0007] Furthermore, a counterweight is fixedly mounted on the lower portion of the swing arm.

[0008] Compared with the prior art, the benefits of the present invention are as follows: the test loading mechanism drives the swing arm to rotate through the first drive motor, and simultaneously drives the loading shaft to apply loading pressure to the car seat frame. The car seat frame strength test operation can be carried out after power is turned on. Compared with the hydraulic cylinder and hydraulic station testing method, it has the advantages of low cost and low requirements for the test space size. Through the forward and reverse rotation and start and stop control of the first drive motor, the reciprocating loading pressure test and pressure holding test of the car seat frame can be realized. The position of the loading shaft can be adjusted so that the loading shaft can adjust different loading pressures on the car seat frame, thereby realizing the use requirements of strength test operations on car seat frames of different sizes and types. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The utility model is further described below in conjunction with the accompanying drawings.

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at M. DETAILED DESCRIPTION

[0012] The utility model is described in detail below in conjunction with specific implementation methods:

[0013] like Figure 1 and Figure 2The loading mechanism for testing the strength of a car seat skeleton shown in the figure comprises a workbench 1, a first support seat 2, a first drive motor 3, a first bearing seat 30, a first drive shaft 31, a first driving wheel 32, a first driven wheel 33, a first transmission belt 34, a second support seat 4, a second driven wheel 41, a third support seat 5, a second driving wheel 50, a second transmission belt 51, a swing arm 6, a third driven wheel 71, a third driving wheel 72, a third transmission belt 73, a loading shaft 8, a guide seat 82 and a transmission block 83. The first bearing seat 30, the second support seat 4 and the third support seat 5 are all fixedly mounted on the workbench 1, the first drive motor 3 and the two first support seats 2 are all fixedly mounted on the first bearing seat 30, the two ends of the central axis of the first driving wheel 32 are rotatably mounted on the two first support seats 2, the output shaft of the first drive motor 3 is transmission-connected to the central axis of the first driving wheel 32, the two ends of the first drive shaft 31 are rotatably mounted on the third support seat 5, and the second driving wheel 50 is fixedly sleeved and mounted on the first drive shaft 31 ends, the first driven wheel 33 is fixedly sleeved and installed in the middle of the first driving shaft 31, the first driven wheel 33 is connected to the first driving wheel 32 through the first transmission belt 34, the two ends of the middle axis of the second driven wheel 41 are rotatably installed on the second support seat 4, the second driven wheel 41 is connected to the second driving wheel 50 through the second transmission belt 51, the lower part of the swing arm 6 is fixedly installed on the inner end of the middle axis of the second driven wheel 41, the second driving motor is fixedly installed on the swing arm 6, the third driven wheel 71 and the third driving wheel 72 are both rotatably installed on the swing arm through their rotating shafts, the output shaft of the second driving motor is connected to the middle axis of the third driving wheel 72, the third driven wheel 71 is connected to the third driving wheel 72 through the third transmission belt 73, the guide seat 82 is slidably sleeved and installed on the swing arm 6, the two ends of the loading shaft 8 are fixedly installed on the guide seat 82, the transmission block 83 is fixedly installed on the guide seat 82, and the transmission block 83 is also connected to the third transmission belt 73.

[0014] It also includes a sensor bracket 91, a baffle plate 62, a laser ranging sensor 93 and a control module. The sensor bracket 91 is fixedly mounted on the second support seat 4. The sensor bracket 91 is also provided with an arc groove 92, which is coaxially arranged with the central axis of the second driven wheel 41. At least three laser ranging sensors 93 are screwed and fixedly mounted in the arc groove 92. The laser ranging sensor 93 and the first drive motor 3 are respectively connected to the control module through circuits. The positions of the laser ranging sensor 93 correspond to the installation and disassembly state, the rated loading force state and the maximum loading force state of the automobile seat frame respectively. After the baffle plate 62 blocks the ranging laser emitted by the laser ranging sensor 93, the ranging value of the laser ranging sensor 93 will change. The laser ranging sensor 93 at this position will transmit a signal to the control module to determine the position of the swing arm 6. The control module controls the swing arm 6 according to the signal feedback, controls the forward and reverse rotation and the start and stop state of the first drive motor 3, and then controls the position of the swing arm 6.

[0015] A loading sleeve 81 is fixedly sleeved and installed on the loading shaft 8. By providing the loading sleeve 81, the test of the local pressure resistance of the automobile seat frame can be improved.

[0016] A counterweight 61 is fixedly installed at the lower part of the swing arm 6, and the counterweight 61 balances the weight of the combination of the swing arm 6, the third driven wheel 71, the third driving wheel 72, the third transmission belt 73, the loading shaft 8, the guide seat 82 and the transmission block 83 to reduce the load on the first drive motor 3 and extend its service life.

[0017] Start the first driving motor 3 to drive the first driving wheel 32 to rotate, the first driving wheel 32 drives the first driven wheel 33 and the first driving shaft 31 and the second driving wheel 50 to rotate synchronously through the first transmission belt 34, the second driving wheel 50 rotates synchronously through the second transmission belt 51 and the swing arm 6, and when the loading shaft 8 on the swing arm 6 is pressed on the car seat frame fixed on the fixture, the loading strength test of the car seat frame can be performed. Start the second driving motor to drive the third driving wheel 72 to rotate, the third driving wheel 72 drives the third driven wheel 71 to rotate synchronously through the third transmission belt 73, and the third transmission belt 73 drives the moving block 83 and the combination of the loading shaft 8 and the guide seat 82 to move up and down synchronously to adjust the position of the loading shaft 8, so that the loading shaft 8 can adjust different loading pressures on the car seat frame, and realize the use requirements of loading pressure testing at different positions of the car seat frame.

[0018] The test loading mechanism drives the swing arm to rotate through the first drive motor, and simultaneously drives the loading shaft to apply loading pressure to the car seat frame. The car seat frame strength test operation can be carried out after power is turned on. Compared with the test method of hydraulic cylinder and hydraulic station, it has the advantages of low cost and low requirement for test space size. Through the forward and reverse rotation and start and stop control of the first drive motor, the reciprocating loading pressure test and pressure holding test of the car seat frame can be realized. The position of the loading shaft can be adjusted so that the loading shaft can adjust different loading pressures on the car seat frame, thereby realizing the use requirements of strength test operations on car seat frames of different sizes and types.

Claims

1. A loading mechanism for testing the strength of a car seat frame, characterized in that: The invention comprises a workbench (1), a first support seat (2), a first drive motor (3), a first bearing seat (30), a first drive shaft (31), a first driving wheel (32), a first driven wheel (33), a first transmission belt (34), a second support seat (4), a second driven wheel (41), a third support seat (5), a second driving wheel (50), a second transmission belt (51), a swing arm (6), a third driven wheel (71), a third driving wheel (72), a third transmission belt (73), a loading shaft (8), a guide seat (82) and a transmission block (83), wherein the first bearing seat ( 30), the second support seat (4), and the third support seat (5) are all fixedly mounted on the workbench (1), the first drive motor (3) and the two first support seats (2) are all fixedly mounted on the first bearing seat (30), the two ends of the central axis of the first driving wheel (32) are rotatably mounted on the two first support seats (2), the output shaft of the first drive motor (3) is transmission-connected with the central axis of the first driving wheel (32), the two ends of the first driving shaft (31) are rotatably mounted on the third support seat (5), and the second driving wheel (50) is fixedly sleeved and mounted on the first driving shaft (31). The first driven wheel (33) is fixedly sleeved and mounted on the middle part of the first driving shaft (31), the first driven wheel (33) is connected to the first driving wheel (32) by a first transmission belt (34), the two ends of the middle shaft of the second driven wheel (41) are rotatably mounted on the second support seat (4), the second driven wheel (41) is connected to the second driving wheel (50) by a second transmission belt (51), the lower part of the swing arm (6) is fixedly mounted on the inner end of the middle shaft of the second driven wheel (41), the second driving motor is fixedly mounted on the swing arm (6), and the third driven wheel (41) is connected to the second driving wheel (50) by a second transmission belt (51). The driven wheel (71) and the third driving wheel (72) are both rotatably mounted on the swing arm via their rotating shafts; the output shaft of the second driving motor is transmission-connected to the middle shaft of the third driving wheel (72); the third driven wheel (71) is transmission-connected to the third driving wheel (72) via a third transmission belt (73); the guide seat (82) is slidably sleeve-mounted on the swing arm (6); both ends of the loading shaft (8) are fixedly mounted on the guide seat (82); the transmission block (83) is fixedly mounted on the guide seat (82); and the transmission block (83) is also transmission-connected to the third transmission belt (73).

2. The automobile seat frame strength test loading mechanism according to claim 1, characterized in that: The invention also comprises a sensor bracket (91), a shielding plate (62), a laser distance measuring sensor (93) and a control module, wherein the sensor bracket (91) is fixedly mounted on the second support seat (4), and the sensor bracket (91) is further provided with an arc-shaped groove (92), wherein the arc-shaped groove (92) is coaxially arranged with the central axis of the second driven wheel (41), and at least three laser distance measuring sensors (93) are screwed and fixedly mounted in the arc-shaped groove (92), and the laser distance measuring sensor (93) and the first driving motor (3) are respectively connected to the control module through circuits.

3. The automobile seat frame strength test loading mechanism according to claim 1, characterized in that: A loading sleeve (81) is fixedly sleeve-mounted on the loading shaft (8).

4. The automobile seat frame strength test loading mechanism according to claim 1, characterized in that: A counterweight (61) is fixedly mounted on the lower portion of the swing arm (6).

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