Steel plate spring pressure detection equipment

Abstract

The utility model relates to steel plate spring pressure detection equipment, and belongs to the technical field of steel plate springs, the steel plate spring pressure detection equipment comprises a detection table and a support plate vertically and transversely arranged at the upper end of the detection table, the left and right sides of the front surface of the support plate are provided with mounting seats, the front surface of each mounting seat is provided with a chute, and the chute is internally provided with a placement seat for placing a lifting lug of a steel plate spring. The left side and the right side of the detection table penetrate through sliding rods connected with the placement seat in a sliding mode, reset springs located outside the sliding rods are detachably arranged between the detection table and the placement seat, a hydraulic push rod is arranged in the middle of the front side of the detection table, and a U-shaped seat attached to the upper surface of the detection table is arranged at the push rod position of the hydraulic push rod; according to the steel plate spring pressure detection equipment, the extension and contraction reset size of the steel plate spring is obtained through uniform measurement, whether the steel plate spring meets the requirement or not is judged, and compared with the prior art, measurement convenience and measurement accuracy are improved.

Description

Steel leaf spring compression testing equipment Technical Field

[0001] This utility model relates to the field of leaf spring technology, specifically to a leaf spring compression testing device. Background Technology

[0002] Leaf springs are the most widely used elastic element in automotive suspensions. They are an elastic beam of approximately equal strength composed of several alloy spring leaves of equal width but unequal length.

[0003] After assembly, leaf springs are placed on a hydraulic inspection table, where pressure is applied to simulate the actual pressure they would withstand. The hydraulic equipment compresses the spring to a certain degree to solidify its overall performance. Workers then use a ruler to measure the repositioned leaf spring, measuring the distance between the curved surface of the leaf spring and the straight line of the lugs at both ends to assess whether the leaf spring meets the requirements. However, using a ruler for measurement is not convenient for precise point measurement of the leaf spring, and the horizontal dimension of the ruler cannot be guaranteed during measurement, affecting the accuracy of the measurement. Therefore, we propose a leaf spring pressure testing device to solve this technical deficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a steel leaf spring compression testing device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a leaf spring compression testing device, comprising a testing platform, a support plate vertically and horizontally disposed at the upper end of the testing platform, mounting seats on both the left and right sides of the front surface of the support plate, a sliding groove on the front surface of the mounting seat, a placement seat for placing the leaf spring's lifting lug within the sliding groove, sliding rods connected to the placement seats slidingly penetrating both the left and right sides of the testing platform, a return spring detachably disposed outside the sliding rod between the testing platform and the placement seat, a hydraulic push rod disposed in the middle of the front side of the testing platform, a U-shaped seat fitting against the upper surface of the testing platform at the push rod of the hydraulic push rod, three hollow seats equally spaced between the mounting seats on the rear side of the support plate, a moving rod slidingly penetrating the front and rear sides of the hollow seat and the support plate at the center of the hollow seat, a scale on the upper surface of the moving rod, and a contact ball at the front end of the moving rod contacting the surface of the leaf spring between the placement seats;

[0006] A stainless steel spring located outside the moving rod is detachably provided between the rear side of the hollow seat and the moving rod.

[0007] Using the above technical solution, by placing the leaf spring on the testing table and positioning the lifting lugs at both ends of the leaf spring on two placement seats, the stainless steel spring is in a normal reset state under the elastic expansion and contraction action of the stainless steel spring. The contact balls on the three moving rods are evenly distributed and contact the arc surface of the leaf spring. With the help of the scale on the moving rod, the scale at the junction of the scale and the hollow seat is obtained, thus obtaining the scale when the leaf spring is not compressed.

[0008] Then, by activating the hydraulic push rod, the U-shaped seat is moved to apply pressure to the leaf spring. The leaf spring deforms and extends, pushing the placement seat to move in the slide groove. The sliding rod moves synchronously and compresses the return spring. While the leaf spring is compressed and deformed, it abuts against the contact ball, causing the moving rod to move synchronously and the stainless steel spring to extend. Thus, after the leaf spring is fully compressed, the scale on the moving rod is used to obtain the scale at the junction of the scale and the hollow seat, thus obtaining the scale when the leaf spring is fully compressed.

[0009] After pressure is applied, the hydraulic push rod drives the U-shaped seat to reset, the reset spring extends and resets, the stainless steel spring retracts and resets, the leaf spring retracts and resets synchronously, and the moving rod moves and resets. With the help of the scale on the moving rod, the scale at the junction of the scale and the hollow seat is obtained again, so as to achieve uniform measurement of the extension, retraction and reset dimensions of the leaf spring, in order to determine whether the leaf spring meets the requirements.

[0010] As a preferred technical solution of this utility model, the other end of the sliding rod away from the placement seat is detachably provided with a limiting seat located outside the detection table;

[0011] The rear side of the movable rod is detachably provided with a limiting seat two.

[0012] By adopting the above technical solution, the sliding rod and the moving rod are prevented from moving and disengaging through the first and second limit seats, while facilitating the disassembly of the first and second limit seats and the disassembly and replacement of the return spring and the stainless steel spring.

[0013] As a preferred embodiment of this utility model, the opposite surface of the placement base is an arc-shaped surface.

[0014] Using the above technical solution, the curved surface facilitates the placement of the seat to fit the curved surface of the leaf spring lug.

[0015] As a preferred embodiment of this utility model, the contact ball is a stainless steel sphere, and when the stainless steel spring is in a fully extended state, the contact ball contacts the support plate.

[0016] By adopting the above technical solution, the compatibility between the movement distance of the contact ball and the compression and extension reset distance of the leaf spring is ensured.

[0017] As a preferred embodiment of this utility model, the upper end of the U-shaped seat is provided with a support frame, the upper end of the support frame is provided with a cylinder, and the push rod of the cylinder is provided with a limiting block located between the upper end of the U-shaped seat and the support frame.

[0018] Using the above technical solution, after the U-shaped seat abuts against the middle of the leaf spring, the cylinder pushes the limiting block downward, so that the limiting block limits the upper surface of the leaf spring, ensuring that the leaf spring is limited between the placement seat, the U-shaped seat and the limiting block, and preventing the leaf spring from detaching and popping out when pressure is applied.

[0019] As a preferred technical solution of this utility model, the upper end of the U-shaped seat is provided with a movable groove for the limiting block to pass through, and the rear surface of the limiting block extends to the outside of the rear surface of the U-shaped seat.

[0020] By adopting the above technical solution, the moving groove ensures the moving distance of the limiting block and ensures the effective limiting pressure of the limiting block on the upper end of the leaf spring.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] 1. This leaf spring compression testing equipment places the leaf spring on the testing table and positions the lifting lugs at both ends of the leaf spring on two placement seats. At this time, under the elastic expansion and contraction of the stainless steel spring, the stainless steel spring is in a normal reset state, so that the contact balls on the three moving rods are evenly distributed and contact the arc surface of the leaf spring. With the help of the scale on the moving rod, the scale at the junction of the scale and the hollow seat is obtained, thus obtaining the scale when the leaf spring is not compressed.

[0023] Then, by activating the hydraulic push rod, the U-shaped seat is moved to apply pressure to the leaf spring. The leaf spring deforms and extends, pushing the placement seat to move in the slide groove. The sliding rod moves synchronously and compresses the return spring. While the leaf spring is compressed and deformed, it abuts against the contact ball, causing the moving rod to move synchronously and the stainless steel spring to extend. Thus, after the leaf spring is fully compressed, the scale on the moving rod is used to obtain the scale at the junction of the scale and the hollow seat, thus obtaining the scale when the leaf spring is fully compressed.

[0024] After pressure is applied, the hydraulic push rod drives the U-shaped seat to reset, the reset spring extends and resets, the stainless steel spring retracts and resets, the leaf spring retracts and resets synchronously, and the moving rod moves and resets. With the help of the scale on the moving rod, the scale at the junction of the scale and the hollow seat is obtained again, thus achieving uniform measurement of the extension, retraction and reset dimensions of the leaf spring, in order to determine whether the leaf spring meets the requirements. Compared with the existing technology, this improves the convenience and accuracy of measurement.

[0025] 2. In this leaf spring pressure testing device, after the U-shaped seat abuts against the middle of the leaf spring, the cylinder pushes the limiting block downward to limit the upper surface of the leaf spring, ensuring that the leaf spring is limited between the placement seat, the U-shaped seat and the limiting block, preventing the leaf spring from detaching and popping out when pressure is applied, thus improving the safety of the measurement. Attached Figure Description

[0026] Figure 1 is a perspective view of this utility model;

[0027] Figure 2 is a side perspective view of the present invention;

[0028] Figure 3 is a top view of this utility model.

[0029] In the diagram: 1. Testing table; 2. Support plate; 3. Mounting seat; 4. Slide groove; 5. Placement seat; 6. Sliding rod; 7. Return spring; 8. Hydraulic push rod; 9. U-shaped seat; 10. Support frame; 11. Cylinder; 12. Limiting block; 13. Moving groove; 14. Hollow seat; 15. Moving rod; 16. Scale; 17. Stainless steel spring; 18. Contact ball; 19. Limiting seat two. Detailed Implementation

[0030] 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.

[0031] Please refer to Figures 1 to 3. The leaf spring compression testing device in this embodiment includes components such as a testing platform 1, a support plate 2, a mounting base 3, a slide groove 4, a placement seat 5, a sliding rod 6, a return spring 7, a hydraulic push rod 8, and a U-shaped seat 9. The support plate 2 is vertically and horizontally fixed to the upper surface of the testing platform 1. Mounting bases 3 are fixed to both the left and right sides of the front surface of the support plate 2. A slide groove 4 is opened on the front surface of the mounting base 3, and a placement seat 5 slides in the slide groove 4 for placing the leaf spring's lifting lug. Sliding rods 6, which are connected and fixed to the placement seats 5, slide through the left and right sides of the testing platform 1. The testing platform 1 and the placement seat... A return spring 7 is detachably fixed between the sliding rods 6 and the slide rod 6. A hydraulic push rod 8 is fixed to the center of the front surface of the test table 1 by bolts. A U-shaped seat 9 that fits against the upper surface of the test table 1 is fixed at the push rod of the hydraulic push rod 8. Three hollow seats 14 are fixed to the rear side of the support plate 2. A moving rod 15 that slides through the front and rear sides of the hollow seat 14 and the support plate 2 slides through the center of the hollow seat 14. A scale 16 is fixed to the upper surface of the moving rod 15 and a contact ball 18 is fixed to the front end. A stainless steel spring 17 located outside the moving rod 15 is fixed between the rear surface of the hollow seat 14 and the moving rod 15.

[0032] The testing platform 1 is the basic component of the entire equipment. It is made of high-strength steel and has good stability and load-bearing capacity. Three hollow seats 14 are evenly distributed between the mounting seats 3 to install and support the moving rod 15, ensuring that the moving rod 15 can slide smoothly.

[0033] The opposite surface of the placement seat 5 is an arc-shaped surface, which fits against the arc-shaped surface of the leaf spring's lug, ensuring stable placement of the lug. The placement seat 5 is connected to the testing table 1 via a sliding rod 6, which passes through the left and right sides of the testing table 1 and can slide within the testing table 1. The return spring 7 is made of high-strength spring steel and has good elasticity and return performance, ensuring that the placement seat 5 remains stable in its initial position when not subjected to external force.

[0034] A support frame 10 is vertically fixed to the middle of the upper surface of the U-shaped seat 9. A cylinder 11 is fixed to the upper end of the support frame 10. A limiting block 12 is fixed at the push rod of the cylinder 11, located between the upper end of the U-shaped seat 9 and the support frame 10. A moving groove 13 is opened at the upper end of the U-shaped seat 9 for the limiting block 12 to pass through. The rear surface of the limiting block 12 extends to the outside of the rear surface of the U-shaped seat 9. The combination of the hydraulic push rod 8 and the cylinder 11 can accurately control the pressure and limiting of the steel leaf spring, ensuring the stability and safety of the testing process.

[0035] The movable rod 15 can slide along the center of the hollow base 14. The scale 16 is made of high-precision steel with clear graduations, which can accurately measure the compression and extension dimensions of the leaf spring. The contact ball 18 is a stainless steel sphere that can be evenly distributed on the arc surface of the leaf spring to ensure the accuracy of the measurement. The stainless steel spring 17 is made of high-quality stainless steel, which has good elasticity and corrosion resistance and can work stably for a long time.

[0036] Structural principle and usage steps: Place the steel leaf spring pressure testing equipment on a flat workbench or ground, ensuring that the testing platform 1 is horizontal and stable.

[0037] Place the leaf spring to be tested on the testing table 1, with the two end lugs of the leaf spring positioned on the left and right placement seats 5 respectively. The arc-shaped surface of the placement seat 5 should be in contact with the arc-shaped surface of the leaf spring lugs to ensure the leaf spring is placed stably. At this time, under the elastic action of the stainless steel spring 17, the contact balls 18 on the three moving rods 15 are evenly distributed on the arc surface of the leaf spring and in contact with it. Observe the scale 16 on the moving rod 15 and record the scale value at the junction of the scale 16 and the hollow seat 14. This value is the initial size of the leaf spring when it is not compressed.

[0038] Start the hydraulic push rod 8 to push the U-shaped seat 9 towards the middle of the leaf spring, applying pressure to the leaf spring. As the pressure increases, the leaf spring deforms and stretches, pushing the placement seat 5 to slide outward in the slide groove 4. The sliding rod 6 moves accordingly, and the return spring 7 is compressed. At the same time, the arc surface of the leaf spring abuts against the contact ball 18 during the compression process, pushing the moving rod 15 to slide backward, and the stainless steel spring 17 is stretched. When the leaf spring is fully compressed to the design degree, observe the scale value at the junction of the scale 16 and the hollow seat 14 again, and record this scale value. This value is the size of the leaf spring after it is fully compressed.

[0039] After pressure is applied, the hydraulic push rod 8 drives the U-shaped seat 9 to reset. The reset spring 7 extends under its own elasticity, pushing the placement seat 5 and sliding rod 6 back to their initial positions. At the same time, the stainless steel spring 17 retracts, pulling the moving rod 15 and contact ball 18 to reset. After the leaf springs have synchronously reset and retracted, the scale value at the junction of the scale 16 and the hollow seat 14 is observed again, and the scale value after reset is recorded. By comparing the three scale values, the extension, retraction, and reset dimensions of the leaf spring are calculated to determine whether the elasticity and performance of the leaf spring meet the requirements.

[0040] After the test is completed, shut off the hydraulic push rod 8 and cylinder 11, and remove the leaf spring from the test bench. Clean the equipment, removing any remaining impurities and dust from the test bench. Lubricate and maintain all moving parts. Check the return spring 7 and stainless steel spring 17 for signs of fatigue damage, and replace them promptly if necessary to ensure the service life and testing accuracy of the equipment.

[0041] It is equipped with a PLC-based automated control system to achieve centralized control of the steel leaf spring pressure testing equipment.

[0042] The beneficial effect is that by using the contact balls 18 on the three moving rods 15 to evenly contact the curved surface of the leaf spring, and in conjunction with the scale 16 for measurement, uniform measurement of the leaf spring can be achieved. This avoids the errors caused by the inability to guarantee horizontal dimensions in traditional scale measurements, thus improving measurement accuracy. Simultaneously, the elastic extension and retraction of the return spring 7 and the stainless steel spring 17 ensure the stability and repeatability of the measurement process, enabling accurate acquisition of the leaf spring's dimensional data under different conditions.

[0043] The combined design of the U-shaped seat 9 and the limiting block 12 can effectively limit the displacement of the leaf spring when pressure is applied, preventing it from detaching and popping out under pressure, protecting the safety of the operator and avoiding accidental injuries caused by the leaf spring going out of control. At the same time, the setting of the first limiting seat and the second limiting seat 19 further prevents the sliding rod 6 and the moving rod 15 from sliding excessively, enhancing the overall stability of the equipment.

[0044] The equipment's automated control system enables precise control and rapid operation of the testing process, reducing manual intervention and improving testing efficiency. The entire process, from the placement, pressure application, measurement to reset of the leaf spring, can be smoothly completed under the automatic control of the equipment, greatly shortening the testing cycle and meeting the quality testing needs of large-scale production.

[0045] The arc-shaped design of the placement seat 5 can adapt to the shape of the lugs of steel leaf springs of different specifications, and has good versatility. At the same time, the adjustable parts and expansion functions of the equipment enable it to adapt to the testing needs of steel leaf springs of various sizes and types, and have strong adaptability and flexibility.

[0046] In summary, the leaf spring compression testing equipment in this embodiment has a reasonable structure and complete functions. It can effectively improve the testing quality and efficiency of leaf springs and reduce safety risks. It is an advanced and practical piece of equipment in the field of leaf spring production and quality testing, and has broad application prospects and promotion value.

[0047] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional and known device such as a computer, and the existing publicly available power connection technology will not be elaborated in the text.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leaf spring compression testing device, comprising a testing platform, a support plate vertically and laterally disposed at the upper end of the testing platform, mounting seats on both the left and right sides of the front surface of the support plate, a sliding groove on the front surface of the mounting seat, a placement seat for placing a lifting lug of a leaf spring within the sliding groove, sliding rods connected to the placement seats slidingly extending through both the left and right sides of the testing platform, a return spring detachably disposed outside the sliding rods between the testing platform and the placement seats, a hydraulic push rod disposed at the center of the front side of the testing platform, and a U-shaped seat fitted against the upper surface of the testing platform at the push rod end of the hydraulic push rod, characterized in that... The support plate has three hollow seats equidistantly distributed between the mounting seats on its rear side. A movable rod that slides through the front and rear sides of the hollow seat and the support plate slides through the center of the hollow seat. The upper surface of the movable rod is provided with a scale. The front end of the movable rod is provided with a contact ball that contacts the surface of the steel leaf spring between the mounting seats. A stainless steel spring located outside the movable rod is detachably provided between the rear side of the hollow seat and the movable rod.

2. The steel leaf spring compression testing device according to claim 1, characterized in that: The sliding rod is detachably provided with a limiting seat one located outside the detection table at the other end away from the placement seat; the moving rod is detachably provided with a limiting seat two at the rear side.

3. The steel leaf spring compression testing device according to claim 1, characterized in that: The opposite surface of the placement base is an arc-shaped surface.

4. The steel leaf spring compression testing device according to claim 1, characterized in that: The contact ball is a stainless steel sphere. When the stainless steel spring is in a fully extended state, the contact ball contacts the support plate.

5. The steel leaf spring compression testing device according to claim 1, characterized in that: The upper end of the U-shaped seat is provided with a support frame, the upper end of the support frame is provided with a cylinder, and the push rod of the cylinder is provided with a limiting block located between the upper end of the U-shaped seat and the support frame.

6. The steel leaf spring compression testing device according to claim 5, characterized in that: The upper end of the U-shaped seat is provided with a movable groove for the limiting block to pass through, and the rear surface of the limiting block extends to the outside of the rear surface of the U-shaped seat.

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