Hydraulic cylinder dynamic alternating load test system

Abstract

The utility model discloses a kind of hydraulic oil cylinder dynamic alternating load test system, comprising: test table, the guide rail assembly is provided on the test table along its length direction;First mounting seat, fixedly set on test table, the first mounting seat is fixedly provided with loading oil cylinder;Second mounting seat, it is set on test table, and it is slidably connected between test table and guide rail assembly;Transition mounting seat, it is set on test table, and it is slidably connected between test table and guide rail assembly;Buffer unit, the buffer unit is set on test table, for second mounting seat is fixed in test position and provides buffer effect force for second mounting seat.Second mounting seat is slidably set on test table, and it is connected with buffer unit, second mounting seat is fixed by buffer unit and provides buffer for second mounting seat, when dynamic alternating load performance test is carried out, it can provide buffer to instantaneous impact effect, alternating load effect, reduce the impact effect to test system, and can provide effective protection for test system, the oil cylinder to be measured.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic cylinder testing technology, specifically relating to a dynamic alternating load testing system for hydraulic cylinders. Background Technology

[0002] Hydraulic cylinders, as actuators, play a crucial role in some large-scale testing equipment. To ensure the accuracy of the testing equipment, hydraulic cylinders need to undergo regular performance tests, such as trial operation, starting pressure characteristics, pressure resistance tests, durability tests, leakage tests, and stroke detection. Due to the different specifications, pressure ratings, and test contents of hydraulic cylinders, multiple cylinder test benches are required for testing. Furthermore, the testing process necessitates frequent cylinder installation and tooling changes, resulting in low testing efficiency, high labor intensity, and low safety.

[0003] In some working scenarios, hydraulic cylinders need to bear alternating loads. Therefore, it is necessary to test the performance of hydraulic cylinders under dynamic alternating loads, such as dynamic response capability, sealing reliability, and load displacement change accuracy. Conventional testing platforms are often difficult to meet the testing requirements. Utility Model Content

[0004] The purpose of this invention is to provide a dynamic alternating load test system for hydraulic cylinders to meet the requirements of dynamic alternating load performance testing of hydraulic cylinders.

[0005] This utility model is achieved through the following technical solution: The hydraulic cylinder dynamic alternating load test system includes: A test bench, wherein a guide rail assembly is provided along its length; The first mounting base is fixedly mounted on the test bench, and a loading cylinder is fixedly mounted on the first mounting base. The second mounting base is set on the test bench and is connected to the test bench by sliding engagement through the guide rail assembly; A transition mounting base is set on the test bench and is slidably connected to the test bench via a guide rail assembly. The transition mounting base is located between the first mounting base and the second mounting base. A buffer unit is provided on the test bench to fix the second mounting base in the test position and to provide a buffering force for the second mounting base. The second mounting base is provided with mounting lugs for connecting the cylinder to be tested, and the transition mounting base is provided with two connecting lugs for connecting the loading cylinder and the cylinder to be tested, respectively.

[0006] In some embodiments, the buffer unit includes a third mounting base and a buffer cylinder. The third mounting base is fixedly disposed outside the second mounting base, and the buffer cylinder is connected to both the third mounting base and the second mounting base.

[0007] In some embodiments, the third mounting base is provided with a U-shaped mounting opening, and the second mounting base is provided with a snap-fit ​​groove; The buffer cylinder is fitted into the mounting port and fixedly connected to the third mounting seat via a flange. The flange at the end of the piston rod of the buffer cylinder is fitted into the snap-fit ​​groove and connected to the second mounting seat.

[0008] In some embodiments, buffer pads are provided between the flange and the snap-fit ​​groove.

[0009] In some embodiments, a support assembly is provided between the second mounting base and the transition mounting base. The support assembly is slidably connected to the test bench via a guide rail assembly to provide support for the hydraulic cylinder under test.

[0010] In some embodiments, the support assembly includes two sets of support members, each support member including a slide table, a support cylinder disposed on the slide table, and a V-shaped bracket disposed on the support cylinder, wherein the slide table and the guide rail assembly are slidably connected.

[0011] In some embodiments, the V-shaped support is provided with a roller assembly.

[0012] In some embodiments, the connecting lug and the transition mounting base are detachably connected.

[0013] In some embodiments, a force sensor is provided on the connecting lug.

[0014] In some embodiments, the guide rail assembly is provided with a grating ruler for measuring the displacement of the transition mounting seat.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects: This invention slides the second mounting base onto the test bench and connects it to the buffer unit. The buffer unit fixes the second mounting base and provides buffering for it. Since the cylinder under test is mounted on the second mounting base and the transition mounting base, it can buffer the instantaneous impact and alternating load during dynamic alternating load performance testing, reduce the impact on the test system, and provide effective protection for the test system and the cylinder under test. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings in the embodiments will be briefly described 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.

[0017] Figure 1 This is a front view of the test state of the hydraulic cylinder dynamic alternating load test system according to an embodiment of this utility model.

[0018] Figure 2 This is a top view of the test state of the hydraulic cylinder dynamic alternating load test system according to an embodiment of this utility model.

[0019] Figure 3 This is a front view of the second mounting base in the hydraulic cylinder dynamic alternating load test system according to an embodiment of this utility model.

[0020] Figure 4 This is a front view of the third mounting base in the hydraulic cylinder dynamic alternating load test system according to an embodiment of this utility model.

[0021] Figure 5 This is a front view of the transition mounting base in the dynamic alternating load test system for hydraulic cylinders according to an embodiment of this utility model.

[0022] Figure 6 This is a schematic diagram of the support structure in the modular hydraulic cylinder testing platform of this utility model embodiment.

[0023] Figure 7 This is a top view of the connecting lug structure in the modular hydraulic cylinder testing platform of this utility model embodiment.

[0024] in: 10. Test bench; 11. Guide rail; 21. First mounting base; 22. Second mounting base; 221. Snap-fit ​​groove; 23. Transition mounting base; 231. Mounting groove; 24. Support component; 241. Slide table; 242. Support cylinder; 243. V-shaped bracket; 244. Roller assembly; 25. Guide rail groove; 26. Third mounting base; 261. Mounting port; 31. Install the lugs; 32. Connect the lugs; 321. Insert the connector; 41. Loading cylinder; 42. Cylinder under test; 43. Buffer cylinder; 44. Buffer pad. 51. Force sensor; 52. Optical grating ruler. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0026] Reference Figure 1 and Figure 2 A dynamic alternating load testing system for hydraulic cylinders, including: Test bench 10, on which a guide rail assembly is provided along its length; First mounting base 21, the first mounting base 21 is fixedly mounted on the test bench 10, and a loading cylinder 41 is fixedly mounted on the first mounting base 21; The second mounting base 22 is disposed on the test bench 10 and is slidably connected to the test bench through a guide rail assembly. Transition mounting base 23 is disposed on the test bench 10 and is slidably connected to the test bench through a guide rail assembly. Transition mounting base 23 is disposed between the first mounting base 21 and the second mounting base 22. A buffer unit is provided on the test bench 10 to fix the second mounting base in the test position and to provide a buffering force for the second mounting base. The second mounting base 22 is provided with mounting lugs 31 for connecting the cylinder under test, and the transition mounting base 23 is provided with two connecting lugs 32 for connecting the loading cylinder 41 and the cylinder under test 42 respectively.

[0027] The guide rail assembly includes two guide rails 11. The two guide rails 11 are arranged side by side on the test bench. By setting the two guide rails, the second mounting base, the transition mounting base, and the support are guided, while the connection structure between the second mounting base, the transition mounting base, the support and the test bench is improved.

[0028] The second mounting base 22, the transition mounting base 23, and the support assembly are provided with guide rail grooves 25 that cooperate with the guide rail assembly. The bottom surface of the second mounting base 22 is in contact with the test table 10 to facilitate the second mounting base to be fixedly installed on the test table through the second mounting part. The bottom surfaces of the transition mounting base 23 and the support are spaced apart from the test table to facilitate the sliding of the transition mounting base and the support on the test table.

[0029] The second mounting base is slidably placed on the test bench and connected to the buffer unit. The buffer unit fixes the second mounting base and provides buffer for the second mounting base. Since the hydraulic cylinder under test is installed on the second mounting base and the transition mounting base, it can provide buffer for instantaneous impact and alternating load during dynamic alternating load performance testing, reduce the impact on the test system, and provide effective protection for the test system and the hydraulic cylinder under test.

[0030] In some embodiments, such as Figure 1 and Figure 2 The buffer unit includes a third mounting base 26 and a buffer cylinder 43. The third mounting base 26 is fixedly disposed on the outside of the second mounting base 22, and the buffer cylinder 43 is connected to both the third mounting base 26 and the second mounting base 22. By using a buffer cylinder, the second mounting base can be connected to the third mounting base and the second mounting base, while the characteristics of the buffer cylinder provide a buffering force to the second mounting base, thus buffering the instantaneous impact force.

[0031] In some embodiments, such as Figure 3 The third mounting base 26 is provided with a U-shaped mounting opening 261, and the second mounting base 22 is provided with a snap-fit ​​groove 221; The buffer cylinder 43 is fitted in the mounting port 261 and fixedly connected to the third mounting seat through a flange. The flange at the end of the piston rod of the buffer cylinder 43 is fitted in the snap-fit ​​groove 221 and connected to the second mounting seat 22 to facilitate the connection between the buffer cylinder and the third and second mounting seats.

[0032] In some embodiments, a buffer pad 44 is provided between the flange and the snap-fit ​​groove. The buffer pad 44 may be made of rubber or a metal disc spring to further provide effective cushioning.

[0033] In some embodiments, a support assembly is provided between the second mounting base 22 and the transition mounting base 23. The support assembly is slidably connected to the test bench through a guide rail assembly and is used to provide support for the hydraulic cylinder under test.

[0034] By setting up support components and connecting the support components to the test bench through guide rail components, the support components can provide support for the hydraulic cylinder under test when disassembling and assembling it, so as to facilitate the assembly of the hydraulic cylinder under test on the test platform.

[0035] In some embodiments, the support assembly includes two sets of support members 24, such as... Figure 6 The support member 24 includes a slide table 241, a support cylinder 242 disposed on the slide table, and a V-shaped bracket 243 disposed on the support cylinder. The slide table 241 is slidably connected to the guide rail assembly.

[0036] The position of the support component on the test platform is centered and positioned by the cooperation between the slide table and the guide rail assembly. A V-shaped bracket is used to center the hydraulic cylinder under test on the support component. The height of the hydraulic cylinder under test is adjusted by the support cylinder, and the lugs at both ends of the hydraulic cylinder under test are adjusted to the installation position of the mounting lugs and connecting lugs, so as to facilitate the assembly of the hydraulic cylinder under test on the test platform and reduce the labor intensity of the hydraulic cylinder under test.

[0037] In some embodiments, a roller assembly 244 is provided on the V-shaped bracket 243, the roller assembly 244 including a plurality of rollers rotatably connected to the V-shaped bracket. By providing the roller assembly, it is convenient to rotate and adjust the hydraulic cylinder under test mounted on the V-shaped bracket, and adjust the lugs of the hydraulic cylinder under test to a state that cooperates with the mounting lugs and connecting lugs, thus facilitating the assembly of the hydraulic cylinder under test on the test platform.

[0038] Meanwhile, the support components provide stable auxiliary support for the hydraulic cylinder under test, ensuring the stability of the testing process.

[0039] In some embodiments, the connecting lug 32 and the transition mounting base 23 are detachably connected. The detachable structure of the connecting lug allows for the replacement of different connecting lugs depending on the hydraulic cylinder under test, thus meeting the testing requirements of different cylinders.

[0040] In some embodiments, such as Figure 5 The transition mounting base 23 is provided with a mounting groove 231, and the connecting lug 32 is provided with a plug 321. The plug 321 is fitted into the mounting groove 231, and the connecting lug 32 and the transition mounting base 23 are connected by a pin.

[0041] In some embodiments, such as Figure 7 A force sensor 51 is installed on the connecting lug 32 to measure the load applied during the test.

[0042] In some embodiments, such as Figure 1 A grating ruler 52 is installed on the guide rail to measure the displacement of the transition installation seat, which is used to measure the displacement during the test.

[0043] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to 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.

[0044] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this utility model does not imply that the components are required to be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A dynamic alternating load testing system for hydraulic cylinders, characterized in that, include: A test bench, wherein a guide rail assembly is provided along its length; The first mounting base is fixedly mounted on the test bench, and a loading cylinder is fixedly mounted on the first mounting base. The second mounting base is set on the test bench and is connected to the test bench by sliding engagement through the guide rail assembly; A transition mounting base is set on the test bench and is slidably connected to the test bench via a guide rail assembly. The transition mounting base is located between the first mounting base and the second mounting base. A buffer unit is provided on the test bench to fix the second mounting base in the test position and to provide a buffering force for the second mounting base. The second mounting base is provided with mounting lugs for connecting the cylinder to be tested, and the transition mounting base is provided with two connecting lugs for connecting the loading cylinder and the cylinder to be tested, respectively.

2. The hydraulic cylinder dynamic alternating load test system according to claim 1, characterized in that, The buffer unit includes a third mounting base and a buffer cylinder. The third mounting base is fixedly disposed outside the second mounting base, and the buffer cylinder is connected to both the third mounting base and the second mounting base.

3. The hydraulic cylinder dynamic alternating load test system according to claim 2, characterized in that, The third mounting base is provided with a U-shaped mounting opening, and the second mounting base is provided with a snap-fit ​​groove; The buffer cylinder is fitted into the mounting port and fixedly connected to the third mounting seat via a flange. The flange at the end of the piston rod of the buffer cylinder is fitted into the snap-fit ​​groove and connected to the second mounting seat.

4. The hydraulic cylinder dynamic alternating load test system according to claim 3, characterized in that, Buffer pads are provided between the flange and the snap-fit ​​groove.

5. The hydraulic cylinder dynamic alternating load test system according to claim 1, characterized in that, A support assembly is provided between the second mounting base and the transition mounting base. The support assembly is slidably connected to the test bench through a guide rail assembly and is used to provide support for the hydraulic cylinder under test.

6. The hydraulic cylinder dynamic alternating load test system according to claim 5, characterized in that, The support assembly includes two sets of support members, each of which includes a slide table, a support cylinder mounted on the slide table, and a V-shaped bracket mounted on the support cylinder. The slide table and the guide rail assembly are slidably connected.

7. The hydraulic cylinder dynamic alternating load test system according to claim 6, characterized in that, The V-shaped bracket is equipped with a roller assembly.

8. The hydraulic cylinder dynamic alternating load test system according to claim 1, characterized in that, The connecting lug and the transition mounting base are detachably connected.

9. The hydraulic cylinder dynamic alternating load test system according to claim 8, characterized in that, A force sensor is installed on the connecting lug.

10. The hydraulic cylinder dynamic alternating load test system according to claim 1, characterized in that, The guide rail assembly is equipped with a grating ruler for measuring the displacement of the transition installation seat.

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