A labor-saving high-precision loading test bench suitable for multiple models of shock absorbers

Abstract

The utility model discloses a be applicable to many models shock absorber laborsaving high accuracy loading test board, including base, stand, roof beam, movable beam, loading hydraulic cylinder, loading platform, lifting hydraulic cylinder and install on base a pair of shock absorber. Movable beam can move up and down along stand, and realize the lifting through lifting hydraulic cylinder, and loading hydraulic cylinder is installed on movable beam, and output end connects loading platform, is used for loading shock absorber. The support platform is arranged below the loading platform, provides support under the non - loading state, prevents falling. Test board still is equipped with rear support beam and side support beam, is used for strengthening structure rigidity. The utility model discloses stable structure, and strong adaptability can carry out high accuracy loading to different model shock absorber, has the advantages such as operating laborsaving, safe and reliable.

Description

Technical Field

[0001] This utility model relates to the technical field of test benches, and in particular to a labor-saving and high-precision loading test bench suitable for multiple types of vibration dampers. Background Technology

[0002] Since the 1990s, several foreign manufacturers of electro-hydraulic servo testing equipment have launched high-performance vibration damper loading test benches, characterized by high testing accuracy and strong control stability. However, due to the high price of these equipment, many small and medium-sized enterprises in China cannot afford the procurement costs and instead rely on simpler, lower-cost but outdated testing equipment. This not only limits the development of vibration damper testing technology in China but also, to some extent, restricts the technological upgrading of my country's vehicle manufacturing industry.

[0003] Existing mid-to-low-end vibration damper test benches mostly employ fixed clamp structures with non-adjustable clamp spacing, resulting in poor adaptability and difficulty in covering vibration damper products of different models and sizes, especially failing to meet the testing requirements of vibration dampers specifically designed for large engineering vehicles or motorcycles. Furthermore, the loading systems generally utilize single hydraulic cylinders or sliding rail platforms, leading to insufficient loading force and a low upper limit for test forces, making it impossible to perform large load tests. Simultaneously, existing equipment suffers from difficulties in centering, significant accuracy deviations, and high operational intensity during loading, severely impacting the accuracy of test results and experimental efficiency.

[0004] In view of this, the inventor has specially designed a labor-saving and high-precision loading test bench suitable for multiple types of vibration dampers, which led to this invention. Utility Model Content

[0005] The purpose of this application is to provide a labor-saving and high-precision loading test bench suitable for multiple types of vibration dampers, which at least solves the problems of poor adaptability, low loading accuracy and laborious operation of existing vibration damper loading test benches.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This application provides a labor-saving, high-precision loading test bench suitable for multiple types of vibration dampers, characterized in that it includes: The base is used to support the entire test bench; Several columns are fixedly installed on the base; The top beam is fixedly installed between the tops of the columns; A movable beam that can move up and down along the column is provided. A loading hydraulic cylinder is installed on the movable beam. A loading platform is fixedly provided at the output end of the loading hydraulic cylinder. Lifting hydraulic cylinders are movably connected to both ends of the movable beam to realize the lifting and lowering of the movable beam. A pair of vibration dampers are fixedly installed on the base and below the loading platform in the vertical direction, and the test piece is fixedly installed between the vibration dampers.

[0007] In a further embodiment, a first support platform is also included, which is used to support the loading platform when the experimental platform is not loaded.

[0008] In a further embodiment, a lifting cylinder support platform is also included, with the lifting hydraulic cylinder fixed on the lifting cylinder support platform and the output end of the lifting hydraulic cylinder movably connected to both ends of the movable beam.

[0009] In a further embodiment, a rear support beam connected to the top beam and the column, and a side support beam connected to the columns, are also included to enhance the overall structural rigidity.

[0010] In a further embodiment, the base includes several steel plates and I-beams, with the steel plates welded above and below the I-beams, and ear plates provided for connecting the lower end of the shock absorber.

[0011] In a further embodiment, the loading platform is a welded steel structure with ear plates on both the upper and lower parts, which are connected to the loading hydraulic cylinder and the shock absorber respectively via pins.

[0012] In a further embodiment, the top beam comprises two crossbeams and three longitudinal beams welded together.

[0013] In a further embodiment, the number of columns is four.

[0014] In a further embodiment, the side support beam comprises a side beam and a side inclined beam, and is arranged along the left and right direction of the column.

[0015] Compared with the prior art, the present invention has the following advantages: By setting up a liftable movable beam and loading platform, rapid adaptation to various models and lengths of vibration dampers is achieved, significantly improving the versatility of the test bench. The rigid connection between the loading hydraulic cylinder and the loading platform ensures the stability and accuracy of force transmission during the loading process, avoiding damage to the vibration dampers caused by loading deviations. The placement of the first support platform effectively prevents the loading platform from suddenly falling due to its own weight when the test is not in operation, improving the safety of equipment operation. In addition, the overall structure is reinforced by the rear and side support beams, further improving the bending and torsional resistance of the test bench, making the loading process more stable and reliable. The overall structural design is reasonable, with good adaptability, safety, and high precision performance.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] in: Figure 1 This is a front view of an embodiment of the present utility model; Figure 2 This is a side view of an embodiment of the present utility model; Figure 3 This is a top view of an embodiment of the present utility model.

[0018] Label Explanation: 100. Base; 101. Steel plate; 102. I-beam; 2. Column; 3. Top beam; 31. Horizontal beam; 32. Longitudinal beam; 4. Movable beam; 5. Loading hydraulic cylinder; 6. Loading platform; 7. Lifting hydraulic cylinder; 8. Vibration damper; 9. First support platform; 10. Lifting cylinder support platform; 11. Rear support beam; 12. Side support beam; 121. Side beam; 122. Side inclined beam; 13. Ear plate; 1000, Test Item. Detailed Implementation

[0019] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0020] like Figure 1 and Figure 2 As shown, the loading test bench in this embodiment adopts a "two-beam, four-column" frame structure, which is installed on the base 100. The base 100 is constructed by welding several thick steel plates 101 and I-beams 102 together, ensuring sufficient rigidity and load-bearing capacity, suitable for heavy-load loading scenarios. The base 100 is provided with an ear plate 13 structure, which is used to connect the lower end of the vibration damper 8 under test to the fixed support via pin shafts, ensuring its positioning stability during loading.

[0021] like Figure 2 As shown, four columns 2 are vertically positioned at the four corners of the base 100, and are connected to the top beam 3 and the base 100 via flanges and high-strength bolts. The columns 2 are constructed of rectangular steel tubing with welded corner braces in the middle to enhance their overall bending and torsional rigidity. The columns 2 are further reinforced by a rear support beam 11 and side support beams 12. The rear support beam 11, located behind the top beam 3, uses a double-diagonal bracing structure to connect the top beam 3 and the columns 2, effectively improving the overall stability of the structure during loading. The side support beams 12 connect adjacent columns 2 along the left-right direction, forming a rigid frame consisting of side beams 121 and diagonal side beams 122, which enhances the equipment's resistance to eccentric loads and lateral forces, further improving the system's loading accuracy.

[0022] like Figure 1 and Figure 3 As shown, the top beam 3 is located on top of the four columns 2. It is an I-shaped welded structure, formed by welding two horizontal beams 31 and three vertical beams 32, possessing excellent compressive and bending resistance. A pair of lifting hydraulic cylinders 7 are connected below the top beam 3 to drive the vertical movement of the movable beam 4. The movable beam 4 is a welded steel plate structure, with both ends connected to the piston rods of the lifting hydraulic cylinders 7 via pins, enabling vertical adjustment. This lifting structure allows for flexible adjustment of the loading position according to the installation height of different vibration dampers 8, improving the equipment's adaptability to various models of vibration dampers 8. The test piece 1000 is fixedly positioned between the vibration dampers 8.

[0023] A loading hydraulic cylinder 5 is fixedly installed at the lower part of the movable beam 4. The piston rod output end of the loading hydraulic cylinder 5 is connected to the upper end of the loading platform 6 via a pin. The loading platform 6 is also a welded steel plate structure. Both the upper and lower parts of the loading platform 6 are equipped with ear plates 13, which are used to connect with the loading hydraulic cylinder 5 and the upper end of the tested vibration damper 8 via pins, respectively, to ensure that the force transmission axis is consistent and to avoid test errors caused by off-center loading. The loading platform 6 is a replaceable structure, which can be adjusted according to the mounting hole positions or external dimensions of vibration dampers 8 of different specifications, thereby further improving the versatility of the equipment and the test accuracy.

[0024] like Figure 1 As shown, to ensure the safety of the loading device when it is not in operation, this embodiment also includes a first support platform 9. The first support platform 9 is located at the lower part of the column 2 and is not in contact with the loading platform 6 during normal loading. When the loading system stops or is depressurized, the loading platform 6 naturally descends and is supported by the first support platform 9, preventing equipment damage or personal injury caused by the loading platform 6 falling due to inertia, thus greatly improving operational safety.

[0025] Furthermore, the lifting hydraulic cylinder 7 is mounted on the lifting cylinder support platform 10. This support platform is a welded steel plate structure, fixed to the middle of the column 2, and connected to the column 2 via a pin. This ensures that the lifting hydraulic cylinder 7 is both stable and has the necessary adjustability, facilitating future maintenance and replacement. All lifting hydraulic cylinders 7 are connected to the control system via a flexible connection, allowing for the setting of loading speed, loading force, and loading displacement according to different loading conditions, achieving high-precision control.

[0026] In actual use, the operator selects a matching loading platform 6 according to the model of the shock absorber 8, and connects it to the loading hydraulic cylinder 5 and the shock absorber 8 via a pin. Then, the height of the movable beam 4 is adjusted to align with the installation position of the shock absorber 8. During loading, the loading hydraulic cylinder 5 applies downward loading force, while the movable beam 4 maintains the verticality of the loading direction. Combined with the high-strength structure and multi-point support system, high-precision loading of the shock absorber 8 along its axis is achieved. After the test is completed, the loading system is depressurized, and the loading platform 6 naturally moves down and is caught by the first support platform 9, preventing structural damage caused by gravity impact.

[0027] The loading test procedure for this utility model is as follows: Installation of vibration damper 8: Install the vibration damper 8 to be tested between the ear plate 13 of the base 100 and the lower ear plate 13 of the loading platform 6 using pins to ensure stable installation and keep the axis of vibration damper 8 aligned with the loading platform 6, loading cylinder, column 2 and other structures.

[0028] Adjusting the loading height: The operator starts the lifting hydraulic cylinder 7 according to the length of the shock absorber 8, which drives the movable beam 4 to move up and down, thereby adjusting the initial height of the loading cylinder and the loading platform 6, aligning it with the upper connection of the shock absorber 8, and ensuring that the loading direction is vertical and consistent.

[0029] Loading process: The hydraulic cylinder 5 applies downward force, and the loading platform 6 drives the vibration damper 8 to undergo axial loading, realizing compression testing or dynamic loading simulation of the vibration damper 8. The loading process can be precisely controlled according to the preset loading force and loading displacement curves. The loading direction is vertical, the structure is stable, and the data is reliable.

[0030] Completion and unloading: After the test is completed, the pressure of the loading hydraulic cylinder 5 is unloaded, so that the loading platform 6 slowly descends to the first support platform 9, releasing the loading force on the shock absorber 8; then the off-shaft is disconnected, the shock absorber 8 is disassembled, and the test is completed.

[0031] Throughout the test, the first support platform 9 provided a safety buffer at critical points; the movable beam 4 could be precisely adjusted in height via hydraulic control; the loading platform 6 and the vibration damper 8 were connected by a pin to ensure alignment; the loading force was stably transmitted through the column 2 and the support beam, making the loading process both safe and highly precise. In particular, the replaceable structural design of the loading platform 6 improved the equipment's adaptability to different models of vibration dampers 8.

[0032] In summary, through the scientific configuration and optimized design of modules such as the base 100, column 2, top beam 3, movable beam 4, loading cylinder, loading platform 6, first support platform 9, and reinforcing beam, this utility model not only achieves universal loading adaptation for multiple models of vibration dampers 8, but also ensures the safety, stability, and accuracy of the loading process. It overcomes the problems of narrow adaptation range, low accuracy, and cumbersome operation of traditional loading test benches, and has high engineering application value.

[0033] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A labor-saving and high-precision loading test bench suitable for multiple types of vibration dampers, characterized in that, include: The base is used to support the entire test bench; Several columns are fixedly installed on the base; The top beam is fixedly installed between the tops of the columns; A movable beam that can move up and down along the column is provided. A loading hydraulic cylinder is installed on the movable beam. A loading platform is fixedly provided at the output end of the loading hydraulic cylinder. Lifting hydraulic cylinders are movably connected to both ends of the movable beam to realize the lifting and lowering of the movable beam. A pair of vibration dampers are fixedly installed on the base and below the loading platform in the vertical direction, and the test piece is fixedly installed between the vibration dampers.

2. The labor-saving and high-precision loading test bench suitable for multiple types of vibration dampers according to claim 1, characterized in that, It also includes a first support platform, which is used to support the loading platform when the experimental platform is not loaded.

3. The labor-saving and high-precision loading test bench suitable for multiple types of vibration dampers according to claim 1, characterized in that, It also includes a lifting cylinder support platform, on which the lifting hydraulic cylinder is fixed, and the output end of the lifting hydraulic cylinder is movably connected to both ends of the movable beam.

4. The labor-saving and high-precision loading test bench suitable for multiple types of vibration dampers according to claim 2, characterized in that, It also includes a rear support beam connected to the top beam and the column, as well as a side support beam connected between the columns, to enhance the overall structural rigidity.

5. The high-precision, labor-saving loading test bench suitable for multiple types of vibration dampers according to claim 1, characterized in that, The base includes several steel plates and I-beams. The steel plates are welded to the top and bottom of the I-beams, and ear plates are provided for connecting the lower end of the shock absorber.

6. The labor-saving and high-precision loading test bench suitable for multiple types of vibration dampers according to claim 1, characterized in that, The loading platform is a welded steel structure with ear plates on both the upper and lower parts, which are connected to the loading hydraulic cylinder and the shock absorber respectively through pins.

7. The labor-saving and high-precision loading test bench suitable for multiple types of vibration dampers according to claim 1, characterized in that, The top beam consists of two horizontal beams and three vertical beams welded together.

8. The high-precision, labor-saving loading test bench for multiple types of vibration dampers according to claim 7, characterized in that, The number of columns is four.

9. A labor-saving, high-precision loading test bench suitable for multiple types of vibration dampers according to claim 4, characterized in that, The side support beam consists of a side beam and a side inclined beam, and is arranged along the left and right direction of the column.

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