A gas spring performance test unit

Abstract

The utility model discloses a kind of gas spring performance test units, belong to gas spring test technical field, including servo lifting assembly, the displacement end of servo lifting assembly is connected with sliding table, and servo lifting assembly controls sliding table up and down displacement adjustment, the bottom of servo lifting assembly is connected with feeding up top pneumatic cylinder, and the top of feeding up top pneumatic cylinder is fixed with gas spring main body by jacking;Test component, the test component includes laser displacement sensor, indenter seat, pressure sensor, speed measuring collar, linear bearing seat and positioning assembly, and indenter seat and positioning assembly fixed end are connected in sliding table outer wall. Through the auxiliary cooperation of servo lifting assembly and feeding up top pneumatic cylinder, the installation and fixation of different size gas spring are completed, to improve the adaptability of the device, facilitate the performance test of different length gas spring, meanwhile, the device is integrated with full stroke force, full stroke stretch, friction coefficient, and the comprehensiveness of test is improved.

Description

Technical Field

[0001] This utility model relates to the field of gas spring testing technology, specifically a gas spring performance testing unit. Background Technology

[0002] Gas springs, as industrial components that utilize the compressibility of gas to achieve elasticity, are widely used in automobiles, machinery, and rail transportation, playing crucial roles such as support, cushioning, and height adjustment. Their performance directly affects the stability and safety of equipment operation. In particular, parameters such as force, extension speed, and sealing must meet strict standards. Gas spring performance testing units are specialized equipment used to test the mechanical properties of gas springs, mainly for evaluating key indicators such as load-bearing capacity, pressure resistance, and fatigue life, ensuring the reliability and safety of gas springs under extreme working conditions.

[0003] Existing equipment often only measures static force or number of cycles of extension and retraction, and cannot achieve comprehensive acquisition of friction coefficient, dynamic speed and full stroke force on the same platform. As a result, existing gas spring testing devices need to use multiple devices for classified testing when testing the comprehensive performance of gas springs, which reduces the convenience of testing. At the same time, the reciprocating clamping of the gas spring can also cause deviations in measurement accuracy due to the offset of the clamping axis, thereby reducing the adaptability and flexibility of existing testing devices, and also reducing their measurement accuracy.

[0004] Therefore, this utility model provides a gas spring performance testing unit to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved This invention provides a gas spring performance testing unit, which aims to solve the problems mentioned in the background art.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a gas spring performance testing unit, including a servo lifting assembly, wherein the displacement end of the servo lifting assembly is connected to a slide table, and the servo lifting assembly controls the up and down displacement adjustment of the slide table; the bottom of the servo lifting assembly is connected to a feeding top cylinder, and the top of the feeding top cylinder is fixedly lifted by a gas spring body. The test assembly includes a laser displacement sensor, a pressure head base, a pressure sensor, a speed measuring collar, a linear bearing seat, and a positioning assembly. The pressure head base and the positioning assembly are fixedly connected to the outer wall of the slide table, and the speed measuring collar is used for abutting the top of the gas spring body.

[0007] As a preferred technical solution of this application, the servo lifting assembly includes a frame, a servo motor is fixedly connected to the top of the frame, a lead screw is fixedly connected to the output end of the servo motor, a nut pair is connected to the outer wall of the lead screw, and the nut pair is the displacement end of the servo lifting assembly. The nut pair is fixedly connected to the side of the slide table near the servo lifting assembly.

[0008] As a preferred technical solution of this application, the outer wall of the frame is also fixedly connected to a guide rail, and a slider is slidably connected to the outside of the guide rail. The slider is fixedly connected to the side of the slide table near the nut pair, and the sliders are symmetrically distributed on both sides of the nut pair.

[0009] As a preferred technical solution of this application, it further includes a guide shaft, which is fixedly connected to the outer wall of the frame, and a sliding sleeve is slidably fitted on the outside of the guide shaft, and the sliding sleeve is fixedly connected to the inside of the linear bearing seat.

[0010] As a preferred technical solution of this application, the feeding top cylinder, the speed measuring collar, and the gas spring body are coaxially distributed, and the gas spring body is clamped and connected between the speed measuring collar and the telescopic end of the feeding top cylinder.

[0011] As a preferred technical solution of this application, the bottom of the laser displacement sensor is adjustablely fixed to the outer wall of the guide shaft through a symmetrical clamping plate. A speed measuring collar is connected inside the linear bearing seat, and a pressure sensor is connected to the top of the speed measuring collar. The other end of the pressure sensor is connected to a pressure head seat.

[0012] As a preferred technical solution of this application, the positioning component includes a first cylinder, which is fixedly connected to the outer wall of the slide. The lifting end of the first cylinder is fixedly connected to a cylinder seat, and the outer wall of the cylinder seat is fixedly connected to a second cylinder. The lifting end of the second cylinder is fixedly connected to a tenon post.

[0013] As a preferred technical solution of this application, the positioning component further includes a tenon seat, and the tenon seat is fixedly connected to the outer wall of the linear bearing seat. The center of the tenon seat is provided with an insertion groove adapted to the tenon post.

[0014] As a preferred technical solution of this application, a proximity switch is fixedly connected to the bottom of the slide table by a bracket, and the proximity switch is used for online monitoring of the position of the speed measuring ring.

[0015] As a preferred technical solution of this application, a signal board is fixedly connected to the outer wall of the slide table, and a photoelectric sensor is fixedly connected to the outer wall of the frame. The signal board and the photoelectric sensor are used to locate the downward position of the slide table.

[0016] (III) Beneficial Effects The beneficial effects of this application are as follows: This utility model, through the auxiliary cooperation of a servo lifting component and a feeding top cylinder, completes the installation and fixing of gas springs of different sizes, thereby improving the adaptability of the device for testing and facilitating performance testing of gas springs of different lengths. At the same time, the device integrates full-stroke force, full-stroke extension, and friction coefficient, improving the comprehensiveness, intelligence, accuracy, and reliability of the test, and has good adaptability, providing a strong guarantee for product quality control. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present utility model; Figure 2 For the present utility model Figure 1 A magnified structural diagram of A in the middle; Figure 3 This is a schematic diagram of the overall structure of the servo lifting component of this utility model; Figure 4 This is a schematic diagram of the slide table connection structure of this utility model; Figure 5 This is a partial exploded view of the positioning component of this utility model.

[0018] In the picture: 1. Servo lifting assembly; 11. Frame; 12. Servo motor; 13. Lead screw; 14. Nut pair; 15. Guide rail; 16. Slider; 2. Guide shaft; 21. Sliding sleeve; 3. Feeding top cylinder; 4. Slide table; 5. Testing assembly; 51. Laser displacement sensor; 52. Pressure head seat; 53. Pressure sensor; 54. Speed ​​measuring collar; 55. Linear bearing seat; 56. Positioning assembly; 61. First cylinder; 62. Cylinder seat; 63. Second cylinder; 64. Locking pin; 65. Locking seat; 7. Gas spring body. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1-5As shown, this utility model provides a gas spring performance testing unit, including a servo lifting assembly 1. The displacement end of the servo lifting assembly 1 is connected to a slide table 4, and the servo lifting assembly 1 controls the vertical displacement adjustment of the slide table 4. The bottom of the servo lifting assembly 1 is connected to a feeding top-lifting cylinder 3, and the top of the feeding top-lifting cylinder 3 lifts and fixes the gas spring body 7. The testing assembly 5 includes a laser displacement sensor 51, a pressure head seat 52, a pressure sensor 53, a speed measuring collar 54, a linear bearing seat 55, and a positioning assembly 56. The fixed ends of the pressure head seat 52 and the positioning assembly 56 are connected to the outer wall of the slide table 4. The speed measuring collar 54 is used to abut the top of the gas spring body 7. The servo lifting assembly 1 drives the slide table 4 and the testing assembly 5 to move up and down, thereby completing the clamping and installation of the gas spring body 7 with the upward lifting of the feeding top-lifting cylinder 3. Furthermore, the comprehensive performance testing of the gas spring body 7 is achieved by adjusting the descent of the testing assembly 5.

[0021] Furthermore, the servo lifting assembly 1 includes a frame 11, a servo motor 12 is fixedly connected to the top of the frame 11, a lead screw 13 is fixedly connected to the output end of the servo motor 12, a nut pair 14 is connected to the outer wall of the lead screw 13, and the nut pair 14 is the displacement end of the servo lifting assembly 1. The nut pair 14 is fixedly connected to the side of the slide table 4 near the servo lifting assembly 1. A guide rail 15 is also fixedly connected to the outer wall of the frame 11, and a slider 16 is slidably connected to the outside of the guide rail 15. The slider 16 is fixedly connected to the side of the slide table 4 near the nut pair 14, and the slider 16 is symmetrically distributed on both sides of the nut pair 14. When the servo motor 12 is started, the lead screw 13 is driven to rotate. When the lead screw 13 rotates, the slide table 4 is adjusted up and down through the up and down displacement of the nut pair 14, which in turn drives the test assembly 5 to move up and down.

[0022] Furthermore, it also includes a guide shaft 2, which is fixedly connected to the outer wall of the frame 11. A sliding sleeve 21 is slidably fitted on the outside of the guide shaft 2, and the sliding sleeve 21 is fixedly connected to the inside of the linear bearing seat 55. The feeding top cylinder 3, the speed measuring collar 54, and the gas spring body 7 are coaxially distributed, and the gas spring body 7 is clamped and connected between the speed measuring collar 54 and the telescopic end of the feeding top cylinder 3. Through the sliding guidance of the guide shaft 2 and the sliding sleeve 21, the linear bearing seat 55 is well guided and limited, ensuring the accuracy of the vertical displacement of the linear bearing seat 55 and the speed measuring collar 54, and further improving the stability of the coaxial positioning of the gas spring body 7.

[0023] Furthermore, the bottom of the laser displacement sensor 51 is adjustablely fixed to the outer wall of the guide shaft 2 via symmetrical clamps. The adjustable mounting structure of the laser displacement sensor 51 facilitates the adjustment of its installation height. A speed measuring collar 54 is connected inside the linear bearing seat 55, and a pressure sensor 53 is connected to the top of the speed measuring collar 54. The other end of the pressure sensor 53 is connected to a pressure head seat 52. Through the cooperation of the pressure head seat 52 and the pressure sensor 53, when the gas spring body 7 rebounds upward, the rebound force of the pressure sensor 53 can be measured by squeezing it.

[0024] Furthermore, the positioning component 56 includes a first cylinder 61, which is fixedly connected to the outer wall of the slide table 4. The lifting end of the first cylinder 61 is fixedly connected to a cylinder seat 62, and the outer wall of the cylinder seat 62 is fixedly connected to a second cylinder 63. The lifting end of the second cylinder 63 is fixedly connected to a locking post 64. The positioning component 56 also includes a locking seat 65, which is fixedly connected to the outer wall of the linear bearing seat 55. The locking seat 65 has a center slot for fitting the locking post 64. The descent of the first cylinder 61 can drive the second cylinder 63 to descend. The lifting of the second cylinder 63 can extend and retract the locking post 64. The extension and retraction of the locking post 64 enables the locking seat 65 to be inserted and positioned. When the locking post 64 is used to position the locking seat 65, the insertion and positioning of the linear bearing seat 55 and the speed measuring collar 54 can be achieved.

[0025] Furthermore, a proximity switch is fixedly connected to the bottom of the slide table 4 via a bracket, and the proximity switch is used for online monitoring of the position of the speed measuring collar 54.

[0026] Furthermore, a signal board is fixedly connected to the outer wall of the slide table 4, and a photoelectric sensor is fixedly connected to the outer wall of the frame 11. The signal board and the photoelectric sensor are used to locate the downward position of the slide table 4. Through their cooperation, the precise positioning of the downward position of the slide table 4 can be achieved, thereby improving the accuracy and reliability of the servo control of the device.

[0027] Working principle; Initial state of the mechanism: The feeding cylinder 3 is below and not pushed out, the tenon 64 is locked in the tenon seat 65, the first cylinder 61 is retracted to the top, and the position detection proximity switch of the speed measuring collar 54 is lit.

[0028] Feeding: The feeding cylinder 3 pushes up, while the servo lifting component 1 drives the slide 4 and the testing component 5 to descend and press down the gas spring body 7. The presence or absence of force is used to determine whether the product is in place.

[0029] Friction test: Servo lifting component 1 drives test component 5 to descend, while feeding top cylinder 3 descends, first cylinder 61 descends, tenon 64 retracts, releasing linear bearing seat 55. After pressing to the specified coordinate, laser displacement sensor 51 quickly retracts. Friction test count: 0, 1, 2 times.

[0030] Measure the extension speed: Press the friction down to the coordinate, the gas spring body 7 drives the speed measuring collar 54 to rise, and the laser displacement sensor 51 generates a curve (standard mode) or generates an average extension speed (simple mode) by measuring distance and time.

[0031] Force Measurement: Static compressive force measurement: Servo lifting component 1 presses down at a specified speed to a specified coordinate, stays for a specified time, and the force value is measured.

[0032] Measure static extension force: The servo lifting component 1 is pressed down to the specified coordinate at a specified speed, then raised back to the specified coordinate, stays for a specified time, and the force value is measured.

[0033] Measure dynamic compression / extension force: Servo lifting component 1 presses down to a specified coordinate at a specified speed, and then rises back to the specified coordinate, and the force value is measured.

[0034] Material ejection: The servo drives the test component 5 to descend to the designated coordinate point, the feeding top cylinder 3 pushes out from below, the first cylinder 61 descends, then the tenon column 64 extends to lock the tenon seat 65, at the same time the ejection gripper comes over to clamp the gas spring body 7, the servo lifting component 1 drives the test component 5 to rise, and at the same time the feeding top cylinder 3 retracts from below, completing the material ejection.

[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A gas spring performance testing unit, characterized in that: It includes a servo lifting assembly (1), the displacement end of which is connected to a slide (4), and the servo lifting assembly (1) controls the slide (4) to adjust its vertical displacement. The bottom of the servo lifting assembly (1) is connected to a feeding top cylinder (3), and the top of the feeding top cylinder (3) is fixed with a gas spring body (7). The test assembly (5) includes a laser displacement sensor (51), a pressure head seat (52), a pressure sensor (53), a speed measuring collar (54), a linear bearing seat (55), and a positioning assembly (56). The pressure head seat (52) and the positioning assembly (56) are fixedly connected to the outer wall of the slide table (4). The speed measuring collar (54) is used to abut against the top of the gas spring body (7).

2. The gas spring performance testing unit according to claim 1, characterized in that: The servo lifting assembly (1) includes a frame (11), a servo motor (12) is fixedly connected to the top of the frame (11), a lead screw (13) is fixedly connected to the output end of the servo motor (12), a nut pair (14) is connected to the outer wall of the lead screw (13), and the nut pair (14) is the displacement end of the servo lifting assembly (1), and the nut pair (14) is fixedly connected to the side of the slide (4) near the servo lifting assembly (1).

3. The gas spring performance testing unit according to claim 2, characterized in that: The outer wall of the frame (11) is also fixedly connected to a guide rail (15), and a slider (16) is slidably connected to the outside of the guide rail (15). The slider (16) is fixedly connected to the side of the slide table (4) near the nut pair (14), and the slider (16) is symmetrically distributed on both sides of the nut pair (14).

4. The gas spring performance testing unit according to claim 1, characterized in that: It also includes a guide shaft (2), which is fixedly connected to the outer wall of the frame (11), and a sliding sleeve (21) is provided on the outside of the guide shaft (2), and the sliding sleeve (21) is fixedly connected to the inside of the linear bearing seat (55).

5. The gas spring performance testing unit according to claim 1, characterized in that: The feed top cylinder (3), the speed measuring collar (54) and the gas spring body (7) are coaxially distributed, and the gas spring body (7) is clamped and connected between the speed measuring collar (54) and the extension end of the feed top cylinder (3).

6. The gas spring performance testing unit according to claim 4, characterized in that: The bottom of the laser displacement sensor (51) is fixedly connected to the outer wall of the guide shaft (2) by a symmetrical clamp. The linear bearing seat (55) is connected to a speed measuring ring (54), and the top of the speed measuring ring (54) is connected to a pressure sensor (53). The other end of the pressure sensor (53) is connected to a pressure head seat (52).

7. The gas spring performance testing unit according to claim 1, characterized in that: The positioning component (56) includes a first cylinder (61), which is fixedly connected to the outer wall of the slide (4). The lifting end of the first cylinder (61) is fixedly connected to a cylinder seat (62), and the outer wall of the cylinder seat (62) is fixedly connected to a second cylinder (63). The lifting end of the second cylinder (63) is fixedly connected to a tenon post (64).

8. The gas spring performance testing unit according to claim 7, characterized in that: The positioning component (56) also includes a latch seat (65), and the latch seat (65) is fixedly connected to the outer wall of the linear bearing seat (55). The center of the latch seat (65) is provided with an insertion groove for the latch post (64).

9. The gas spring performance testing unit according to claim 1, characterized in that: The bottom of the slide (4) is fixedly connected to a proximity switch by a bracket, and the proximity switch is used for online monitoring of the position of the speed measuring collar (54).

10. The gas spring performance testing unit according to claim 2, characterized in that: The outer wall of the slide (4) is also fixedly connected to a signal plate, and the outer wall of the frame (11) is also fixedly connected to a photoelectric sensor. The signal plate and the photoelectric sensor are used to locate the downward position of the slide (4).

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