A test bench for automobile suspension oil cylinder

Abstract

The utility model provides a kind of automobile suspension oil cylinder test bench, comprising: main frame, first actuator, first displacement sensor, first pressure sensor and energy accumulator;The first actuator is installed on main frame, and the piston rod of the first actuator can be abutted on the automobile suspension oil cylinder tested and placed on main frame, the first displacement sensor is installed on first actuator, the first pressure sensor is installed on first actuator, the energy accumulator is installed on main frame and is connected with the automobile suspension oil cylinder tested on main frame by pipeline, the performance and quality of automobile suspension oil cylinder can be verified in advance, no longer need to be loaded vehicle road test, shorten the development cycle of whole vehicle product.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts testing technology, and in particular to a test bench for automotive suspension cylinders. Background Technology

[0002] The suspension cylinder is a key component of the automotive suspension system, primarily used to support the vehicle body, absorb road impacts, and provide functions such as vehicle support, vibration damping, and height adjustment. It is commonly used in heavy-duty trucks, engineering vehicles, and some high-end passenger cars. Currently, the performance of automotive suspension cylinders can only be verified through on-vehicle road tests, which carries certain risks and prolongs the development cycle of the entire vehicle product.

[0003] Therefore, it is necessary to provide a test bench for automotive suspension cylinders to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a test bench for automotive suspension cylinders, which can verify the performance and quality of automotive suspension cylinders in advance, eliminating the need for on-vehicle road testing and shortening the development cycle of the entire vehicle product.

[0005] To achieve the above objectives, the technical solution proposed by this utility model is as follows: a test bench for automotive suspension cylinders, comprising: The main frame, the first actuating cylinder, the first displacement sensor, the first pressure sensor, and the accumulator; The first actuating cylinder is mounted on the main frame, and the piston rod of the first actuating cylinder extends to abut against the automotive suspension cylinder being tested, which is placed on the main frame. The first displacement sensor is mounted on the first actuating cylinder, and the first pressure sensor is mounted on the first actuating cylinder. The accumulator is mounted on the main frame and connected to the automotive suspension cylinder being tested on the main frame via a pipe.

[0006] Preferably, the main frame is provided with a first slide rail along the longitudinal direction, and the main frame is provided with a first crossbeam along the transverse direction. The first crossbeam is slidably connected to the first slide rail by a slider, and the first actuating cylinder is mounted on the first crossbeam.

[0007] Preferably, the main frame is detachably provided with a rotating mechanism and a sliding plate. The rotating mechanism includes a rotating base, a first steering cylinder, a second steering cylinder, and a position switch. The two sides of the rotating base are respectively hinged to the telescopic rods of the first and second steering cylinders. The first and second steering cylinders are hinged to the bottom of the main frame and are symmetrically distributed. The position switch is arranged adjacent to the rotating base. The sliding plate is slidably mounted on the first slide rail.

[0008] Preferably, the main frame is further provided with a detachable auxiliary installation platform, on which a pressure gauge is provided, and the accumulator is installed on the auxiliary installation platform.

[0009] Preferably, the automotive suspension cylinder test bench further includes an auxiliary frame, a second actuating cylinder, a second displacement sensor, and a second pressure sensor; The auxiliary frame is arranged adjacent to the main frame; The second actuating cylinder is mounted on the auxiliary frame, and the piston rod of the second actuating cylinder extends to abut against the automotive suspension cylinder being tested on the auxiliary frame. The second displacement sensor is mounted on the second actuating cylinder, and the second pressure sensor is mounted on the second actuating cylinder. The accumulator is also connected via a pipe to the automotive suspension cylinder being tested on the auxiliary frame.

[0010] Preferably, the auxiliary frame is provided with a second slide rail along the longitudinal direction, and a second crossbeam is provided with a second crossbeam in the transverse direction. The second crossbeam is slidably connected to the second slide rail by a slider, and the second actuating cylinder is mounted on the second crossbeam.

[0011] Compared with existing technologies, the advantages are that it can be used for pressure, steering, and oil leakage tests of automotive suspension cylinders, pre-verifying the performance and quality of automotive suspension cylinders, eliminating the need for on-vehicle road tests, and shortening the development cycle of the entire vehicle product.

[0012] Other features and advantages of this invention will be set forth in the following description, and in part will be apparent from the description, or may be learned by practice of the invention. The features and advantages of this invention may be realized and obtained by means of the elements and combinations specifically pointed out in the appended claims. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. Figure 1 A side view of the automotive suspension cylinder test bench provided by this utility model.

[0014] Figure 2 This is a top view of the rotating mechanism.

[0015] Figure 3 This is the front view of the automotive suspension cylinder test bench.

[0016] Reference numerals: 1. Main frame; 11. First slide rail; 12. First crossbeam; 13. Rotating mechanism; 131. Rotating base; 132. First steering cylinder; 133. Second steering cylinder; 134. First position switch; 135. Second position switch; 14. Sliding plate; 15. Auxiliary mounting platform; 2. First actuating cylinder; 5. Accumulator; 6. Auxiliary frame; 62. Second crossbeam; 7. Second actuating cylinder; 10. Automobile suspension cylinder. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are merely for explaining the present utility model and are not intended to limit the present utility model.

[0018] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. Additionally, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0021] Please see Figures 1 to 3 This utility model provides a test bench for automotive suspension cylinders, comprising: Main frame 1, first actuating cylinder 2, first displacement sensor, first pressure sensor and accumulator 5; The first actuating cylinder 2 is mounted on the main frame 1, and the piston rod of the first actuating cylinder 2 extends to abut against the automotive suspension cylinder 10 being tested, which is placed on the main frame 1. The first displacement sensor is mounted on the first actuating cylinder 2, and the first pressure sensor is mounted on the first actuating cylinder 2. The accumulator 5 is mounted on the main frame 1 and connected to the automotive suspension cylinder 10 being tested on the main frame 1 via a pipe. The accumulator 5 injects nitrogen into the nitrogen chamber of the automotive suspension cylinder 10 on the main frame 1 through the pipe, giving the automotive suspension cylinder 10 an elastic support force. This causes the piston rod inside the automotive suspension cylinder 10 to extend and push the piston rod of the first actuating cylinder 2 to retract. The first displacement sensor detects the displacement distance of the piston rod of the first actuating cylinder 2, and the first pressure sensor detects the force borne by the piston rod of the first actuating cylinder 2, thus testing the support force of the automotive suspension cylinder 10.

[0022] It should be noted that in this embodiment, the first actuating cylinder 2 is a hydraulic cylinder, and the external oil pipe supplies hydraulic oil to the first actuating cylinder 2 so that the piston rod of the first actuating cylinder 2 extends and abuts against the automotive suspension cylinder 10 being tested on the main frame 1.

[0023] During the load-bearing capacity test, the main frame 1 is first placed on the ground, and then the car suspension cylinder 10 to be tested is stably placed on the main frame 1, directly below the piston rod of the first actuating cylinder 2. The external oil pipe supplies hydraulic oil to the first actuating cylinder 2, causing the piston rod of the first actuating cylinder 2 to extend and abut against the car suspension cylinder 10 to be tested on the main frame 1. At this time, the accumulator 5 injects nitrogen into the nitrogen chamber of the car suspension cylinder 10 through the pipeline, so that the car suspension cylinder 10 has elastic support force, causing the piston rod inside the car suspension cylinder 10 to extend and push the piston rod of the first actuating cylinder 2 to retract. The first displacement sensor detects the displacement distance of the piston rod of the first actuating cylinder 2, and the first pressure sensor detects the force borne by the piston rod of the first actuating cylinder 2. The support force of the car suspension cylinder 10 is tested, and it is observed whether there is any air leakage in the car suspension cylinder 10.

[0024] During the oil leakage test, hydraulic oil was injected into the oil inlet of the car suspension cylinder 10 using a hydraulic oil pipe. After the hydraulic oil entered the oil chamber, it was discharged from the oil outlet of the car suspension cylinder 10. The oil inlet, oil outlet and weld were observed to see if there was any oil leakage.

[0025] In one specific embodiment, the main frame 1 is provided with a first slide rail 11 along the longitudinal direction, and the main frame 1 is provided with a first crossbeam 12 along the transverse direction. The first crossbeam 12 is slidably connected to the first slide rail 11 by a slider, and the first actuating cylinder 2 is installed on the first crossbeam 12 to facilitate flexible adjustment of the height of the first actuating cylinder 2.

[0026] It should be noted that after the height of the first actuating cylinder 2 is adjusted, the first crossbeam 12 is fixed to the main frame 1 using a screw. This is to prevent the first actuating cylinder 2 on the first crossbeam 12 from moving upward when nitrogen is added to the nitrogen chamber of the car suspension cylinder 10 during the test, causing the piston rod inside the car suspension cylinder 10 to extend, which would prevent the load-bearing capacity test from being completed.

[0027] In one specific embodiment, a rotating mechanism 13 and a sliding plate 14 are detachably mounted on the main frame 1. The rotating mechanism 13 includes a rotating base 131, a first steering cylinder 132, a second steering cylinder 133, and a position switch. The two sides of the rotating base 131 are respectively hinged to the telescopic rods of the first steering cylinder 132 and the second steering cylinder 133. The first steering cylinder 132 and the second steering cylinder 133 are hinged to the bottom of the main frame 1 and are symmetrically distributed. The position switch is arranged adjacent to the rotating base 131. The sliding plate 14 is slidably mounted on the first slide rail 11.

[0028] It should be noted that in this embodiment, there are two position switches, both of which are connected to an external power source. The external power source supplies power to the position switches, and the position switches are used to test the position changes of the rotating base 131.

[0029] During the steering performance test, the rotating mechanism 13 is first installed on the main frame 1, and then the piston rod of the car suspension cylinder 10 is inserted into the rotating base 131. The height of the sliding plate 14 is adjusted so that the sliding plate 14 is fixed to the connecting lug on the car suspension cylinder 10. Then the sliding plate 14 is fixed so that the position of the main structure of the car suspension cylinder 10 remains fixed.

[0030] When the extension rod of the first steering cylinder 132 extends, the extension rod of the second steering cylinder 133 retracts, causing the rotating base 131 to rotate counterclockwise. If the rotating base 131 can rotate normally and abut against the contact of the first position switch 134, it indicates that the steering function of the piston rod of the vehicle suspension cylinder 10 is normal; conversely, if the rotating base 131 cannot rotate normally and abut against the contact of the first position switch 134, it indicates that the steering function of the piston rod of the vehicle suspension cylinder 10 is abnormal.

[0031] When the telescopic rod of the first steering cylinder 132 retracts, the telescopic rod of the second steering cylinder 133 extends, causing the rotating base 131 to rotate clockwise. If the rotating base 131 can rotate normally and abut against the contact of the second position switch 135, it indicates that the steering function of the piston rod of the vehicle suspension cylinder 10 is normal; conversely, if the rotating base 131 cannot rotate normally and abut against the contact of the second position switch 135, it indicates that the steering function of the piston rod of the vehicle suspension cylinder 10 is abnormal.

[0032] In one specific embodiment, a detachable auxiliary mounting platform 15 is also provided on the main frame 1. A pressure gauge 151 is provided on the auxiliary mounting platform, and the accumulator 5 is mounted on the auxiliary mounting platform 15. The pressure gauge 151 is used to test the pressure of nitrogen gas inside the accumulator 5. During the load-bearing capacity test, the auxiliary mounting platform 15 must first be mounted on the main frame 1, and then the accumulator 5 must be mounted on the auxiliary mounting platform 15. When not performing a load-bearing capacity test, it is not necessary to mount the auxiliary mounting platform 15 on the main frame 1.

[0033] In one specific embodiment, the automotive suspension cylinder test bench further includes an auxiliary frame 6, a second actuating cylinder 7, a second displacement sensor, and a second pressure sensor; The auxiliary frame 6 is arranged adjacent to the main frame 1, and the auxiliary frame 6 is used to be placed on the ground; The second actuating cylinder 7 is mounted on the auxiliary frame 6, and the piston rod of the second actuating cylinder 7 extends to abut against the automotive suspension cylinder 10 being tested on the auxiliary frame 6. The second displacement sensor is mounted on the second actuating cylinder 7, and the second pressure sensor is mounted on the second actuating cylinder 7. The accumulator 5 is also connected to the tested car suspension cylinder 10 on the auxiliary frame 6 via a pipe. The accumulator 5 injects nitrogen into the nitrogen chamber of the car suspension cylinder 10 on the auxiliary frame 6 through the pipe, so that the car suspension cylinder 10 has elastic support force inside, causing the piston rod inside the car suspension cylinder 10 to extend and push the piston rod of the second actuating cylinder 7 to retract. The second displacement sensor detects the displacement distance of the piston rod of the second actuating cylinder 7, and the second pressure sensor detects the force borne by the piston rod of the second actuating cylinder 7, thus testing the support force of the car suspension cylinder 10.

[0034] It should be noted that in this embodiment, the second actuating cylinder 7 is a hydraulic cylinder, and the external oil pipe supplies hydraulic oil to the second actuating cylinder 7 so that the piston rod of the second actuating cylinder 7 extends and abuts against the automotive suspension cylinder 10 being tested on the auxiliary frame 6.

[0035] In one specific embodiment, the auxiliary frame 6 is provided with a second slide rail along the longitudinal direction, and a second crossbeam 62 is provided with a second crossbeam 62 in the transverse direction. The second crossbeam 62 is slidably connected to the second slide rail by a slider, and the second actuating cylinder 7 is installed on the second crossbeam 62 to facilitate flexible adjustment of the height of the second actuating cylinder 7.

[0036] It should be noted that after the height of the second actuating cylinder 7 is adjusted, the second crossbeam 62 is fixed to the auxiliary frame 6 using a screw. This is to prevent the second actuating cylinder 7 on the second crossbeam 62 from moving upward when nitrogen is injected into the nitrogen chamber of the car suspension cylinder 10 during the test, causing the piston rod inside the car suspension cylinder 10 to extend, which would prevent the load-bearing capacity test from being completed.

[0037] During the load-bearing capacity test, the main frame 1 and the auxiliary frame 6 are first placed on the ground. Then, one of the car suspension cylinders 10 to be tested is stably placed on the main frame 1, and another car suspension cylinder 10 to be tested is stably placed on the auxiliary frame 6. The two car suspension cylinders 10 to be tested are located directly below the piston rod of the first actuating cylinder 2 and the piston rod of the second actuating cylinder 7, respectively. External oil pipes supply hydraulic oil to the first actuating cylinder 2 and the second actuating cylinder 7, causing the piston rod of the first actuating cylinder 2 to extend and abut against the tested automotive suspension cylinder 10 on the main frame 1, and causing the piston rod of the second actuating cylinder 7 to extend and abut against the tested automotive suspension cylinder 10 on the auxiliary frame 6. At this time, the accumulator 5 injects nitrogen into the nitrogen chambers of the automotive suspension cylinder 10 on the main frame 1 and the automotive suspension cylinder 10 on the auxiliary frame 6 through pipes, giving the automotive suspension cylinder 10 an elastic support force, causing the two automotive suspension cylinders 10 to... The piston rods inside extend to push the piston rods of the first actuating cylinder 2 and the second actuating cylinder 7 to retract respectively. The first displacement sensor 3 and the second displacement sensor 8 detect the displacement distance of the piston rods of the first actuating cylinder 2 and the second actuating cylinder 7 respectively. The first pressure sensor 4 and the second pressure sensor 9 detect the force borne by the piston rods of the first actuating cylinder 2 and the second actuating cylinder 7 respectively. The supporting force of the two car suspension cylinders 10 is tested, and it is observed whether there is air leakage in the car suspension cylinders 10.

[0038] During the oil leakage test, hydraulic oil is injected into the oil inlet of the car suspension cylinder 10 using a hydraulic oil pipe. After the hydraulic oil enters the oil chamber, it is discharged from the oil outlet of the car suspension cylinder 10. The oil inlet, oil outlet and weld are observed to see if there is any oil leakage. The performance and quality of the car suspension cylinder 10 are verified in advance, eliminating the need for on-vehicle road testing and shortening the development cycle of the whole vehicle product.

[0039] This invention is not limited to the description in the specification and embodiments. Therefore, other advantages and modifications can be readily realized by those skilled in the art. Thus, without departing from the spirit and scope of the general concept as defined by the claims and their equivalents, this invention is not limited to the specific details, representative devices and illustrated examples shown and described herein.

Claims

1. A test bench for automotive suspension cylinders, characterized in that, include: Main frame (1), first actuating cylinder (2), first displacement sensor, first pressure sensor and accumulator (5); The first actuating cylinder (2) is mounted on the main frame (1), and the piston rod of the first actuating cylinder (2) extends to abut against the automotive suspension cylinder (10) being tested and placed on the main frame (1). The first displacement sensor is mounted on the first actuating cylinder (2), and the first pressure sensor is mounted on the first actuating cylinder (2). The accumulator (5) is mounted on the main frame (1) and connected to the automotive suspension cylinder (10) being tested on the main frame (1) via a pipe.

2. The automotive suspension cylinder test bench as described in claim 1, characterized in that, The main frame (1) is provided with a first slide rail (11) along the longitudinal direction, and the main frame (1) is provided with a first crossbeam (12) along the transverse direction. The first crossbeam (12) is slidably connected to the first slide rail (11) by a slider, and the first actuating cylinder (2) is installed on the first crossbeam (12).

3. The automotive suspension cylinder test bench as described in claim 1, characterized in that, The main frame (1) is detachably provided with a rotating mechanism (13) and a sliding plate (14). The rotating mechanism (13) includes a rotating base (131), a first steering cylinder (132), a second steering cylinder (133), and a position switch. The two sides of the rotating base (131) are respectively hinged to the telescopic rods of the first steering cylinder (132) and the second steering cylinder (133). The first steering cylinder (132) and the second steering cylinder (133) are hinged to the bottom of the main frame (1), and the first steering cylinder (132) and the second steering cylinder (133) are symmetrically distributed. The position switch is arranged adjacent to the rotating base (131). The sliding plate (14) is slidably installed on the first slide rail (11).

4. The automotive suspension cylinder test bench as described in claim 1, characterized in that, The main frame (1) is also provided with a detachable auxiliary installation platform (15), on which a pressure gauge (151) is provided, and the accumulator (5) is installed on the auxiliary installation platform (15).

5. The automotive suspension cylinder test bench as described in claim 1, characterized in that, The automotive suspension cylinder test bench also includes an auxiliary frame (6), a second actuating cylinder (7), a second displacement sensor, and a second pressure sensor; The auxiliary frame (6) is arranged adjacent to the main frame (1); The second actuating cylinder (7) is mounted on the auxiliary frame (6), and the piston rod of the second actuating cylinder (7) extends to abut against the tested automotive suspension cylinder (10) on the auxiliary frame (6). The second displacement sensor is mounted on the second actuating cylinder (7), and the second pressure sensor is mounted on the second actuating cylinder (7). The accumulator (5) is also connected via a pipe to the automotive suspension cylinder (10) being tested on the auxiliary frame (6).

6. The automotive suspension cylinder test bench as described in claim 5, characterized in that, The auxiliary frame (6) is provided with a second slide rail in the longitudinal direction, and a second crossbeam (62) is provided in the transverse direction. The second crossbeam (62) is slidably connected to the second slide rail by a slider, and the second actuating cylinder (7) is installed on the second crossbeam (62).

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