Hydraulic cylinder test bed

Abstract

The utility model discloses a hydraulic cylinder test bed, which relates to the technical field of hydraulic cylinder detection and comprises a base, top plates are fixedly connected to four corners of the top end of the base, and top plates are fixedly connected to the top ends of vertical rods; the top end of the top plate is fixedly connected with a test cylinder, the output end of the test cylinder is fixedly connected with a mounting plate, and the bottom end of the mounting plate is provided with a pressure sensor; a pressing plate is arranged below the mounting plate, and a top block is fixedly connected to the middle of the top end of the pressing plate. According to the utility model, through the arrangement of the test cylinder, the test cylinder can drive the mounting plate arranged at the output end to move up and down and drive the pressing plate to move downwards to extrude the stability of the hydraulic cylinder under the rated pressure, the pressure resistance of the hydraulic cylinder can be effectively detected, and meanwhile, the mounting plate can be fixedly arranged through the support rod, so that the test efficiency is improved. The hydraulic cylinder to be tested is jacked upwards to test the load performance, the ratio of the output force to the theoretical value is measured, the energy conversion efficiency is evaluated, and the adaptability of the device in use is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder testing technology, and in particular to a hydraulic cylinder testing bench. Background Technology

[0002] The hydraulic cylinder test bench is mainly used to comprehensively test the performance, reliability and safety of hydraulic cylinders to ensure that they meet design requirements and usage standards.

[0003] Existing hydraulic cylinder testing benches typically test the pressure resistance and load capacity of hydraulic cylinders. This requires placing the hydraulic cylinder under test on the test bench, fixing it in place, and then activating the test cylinder to press it down, verifying the stability of the hydraulic cylinder under rated working pressure. The existing testing benches have a single working mode, only able to test the pressure resistance of hydraulic cylinders, and cannot effectively test the load capacity of hydraulic cylinders, resulting in limited effectiveness of the device.

[0004] Therefore, it is necessary to invent a hydraulic cylinder test bench to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a hydraulic cylinder testing bench. By setting a test cylinder, the test cylinder can drive the mounting plate at the output end to move up and down, causing the pressure plate to move downward to compress the hydraulic cylinder under rated pressure, effectively testing the pressure resistance of the hydraulic cylinder. At the same time, the mounting plate can be fixed by a support rod, so that the hydraulic cylinder under test is lifted upward to test its load performance, measure the ratio of output force to theoretical value, and evaluate energy conversion efficiency, effectively improving the adaptability of the device. This solves the problem mentioned in the background art that existing hydraulic cylinder testing benches usually need to test the pressure resistance and load performance of hydraulic cylinders. The hydraulic cylinder under test needs to be placed on the test bench for fixation, and then the test cylinder is activated to press down to verify the stability of the hydraulic cylinder under rated working pressure. The existing test benches have a single working mode, which can only test the pressure resistance of hydraulic cylinders and cannot effectively test the load performance of hydraulic cylinders, resulting in the limited use of the device.

[0006] According to one aspect of this disclosure, the following technical solution is provided: a hydraulic cylinder test bench, characterized in that it includes a base, with top plates fixedly connected to the four corners of the top of the base, and the top of the upright is fixedly connected to the top plate;

[0007] A test cylinder is fixedly connected to the top of the top plate, and a mounting plate is fixedly connected to the output end of the test cylinder. A pressure sensor is provided at the bottom of the mounting plate.

[0008] A pressure plate is provided below the mounting plate, and a top block is fixedly connected to the middle of the top of the pressure plate. Slide rods are slidably connected to the inner sides of both ends of the mounting plate. The slide rods are fixedly connected to the top of the pressure plate, and a limit block is fixedly connected to the top of the slide rods.

[0009] According to at least one embodiment of the present disclosure, a hydraulic cylinder test bench has side fixing blocks fixedly connected to both ends of the mounting plate, and a slot is provided at the top of the side fixing block, with a support rod slidably engaged inside the slot.

[0010] According to at least one embodiment of the present disclosure, a hydraulic cylinder test bench is provided with a placement frame fixedly connected to the middle of the top of the base, and two clamping plates are symmetrically arranged inside the placement frame, with a rubber pad provided on one side of each clamping plate.

[0011] According to at least one embodiment of the present disclosure, a hydraulic cylinder test bench has sliding grooves on the front and rear sides of the placement frame, and sliders are fixedly connected to both ends of the clamping plate, with the sliders slidably connected within the sliding grooves.

[0012] According to at least one embodiment of the present disclosure, a hydraulic cylinder test bench is provided on both the left and right sides of the placement frame, and an adjusting bolt is threaded into the threaded hole. The end of the adjusting bolt is rotatably disposed inside the clamping plate.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] (1) By setting up a test cylinder, the test cylinder can drive the mounting plate set at the output end to move up and down, and drive the pressure plate to move down to squeeze the stability of the hydraulic cylinder under the rated pressure. This can effectively test the pressure resistance of the hydraulic cylinder. At the same time, the mounting plate can be fixed by the support rod, so that the hydraulic cylinder under test can be lifted up to test its load performance, measure the ratio of the output force to the theoretical value, evaluate the energy conversion efficiency, and effectively improve the adaptability of the device. Attached Figure Description

[0015] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0016] Figure 1 This is a schematic diagram of the overall structure of a hydraulic cylinder test bench according to one embodiment of the present disclosure.

[0017] Figure 2 This is a schematic diagram of the main structure of a frame placed in a hydraulic cylinder test bench according to one embodiment of the present disclosure.

[0018] Figure 3 This is a front view structural schematic diagram of a hydraulic cylinder test bench according to one embodiment of the present disclosure.

[0019] Figure 4 for Figure 3 A schematic diagram of the structure at point A in the middle.

[0020] The specific labels in the attached figures are as follows:

[0021] 1. Base; 11. Upright; 12. Top plate;

[0022] 2. Test the cylinder;

[0023] 3. Placement frame; 31. Slide rail;

[0024] 4. Clamping plate; 41. Rubber pad; 42. Slider; 43. Adjusting bolt;

[0025] 5. Mounting plate; 51. Side fixing block; 511. Slot; 52. Pressure sensor;

[0026] 6. Slide rod; 61. Limiting block;

[0027] 7. Pressure plate; 71. Top block;

[0028] 8. Support rod. Detailed Implementation

[0029] like Figures 1-4 As shown, a hydraulic cylinder test bench disclosed herein may include a base 1, with a top plate 12 fixedly connected to each of the four corners of the top of the base 1, and the top of the upright 11 is fixedly connected to the top plate 12.

[0030] A test cylinder 2 is fixedly connected to the top of the top plate 12, and a mounting plate 5 is fixedly connected to the output end of the test cylinder 2. A pressure sensor 52 is installed at the bottom of the mounting plate 5.

[0031] A pressure plate 7 is provided below the mounting plate 5. A top block 71 is fixedly connected to the middle of the top of the pressure plate 7. Slide rods 6 are slidably connected to the inner sides of both ends of the mounting plate 5. The slide rods 6 are fixedly connected to the top of the pressure plate 7. A limit block 61 is fixedly connected to the top of the slide rods 6.

[0032] Therefore, by setting up test cylinder 2, which can drive mounting plate 5 to move up and down, and placing the hydraulic cylinder to be tested on the top of base 1, test cylinder 2 can be activated to drive mounting plate 5 downward, simultaneously driving pressure plate 7 downward. Due to the irregular shape of the hydraulic cylinder's output end, pressure plate 7 contacts its output end, resulting in a more stable contact surface. During the downward movement of mounting plate 5 by test cylinder 2, pressure plate 7 contacts the hydraulic cylinder's output end and is pressed upward, causing top block 71 to contact pressure sensor 52, thus verifying the stability of the hydraulic cylinder under rated working pressure, measuring the maximum pressure-bearing capacity of the hydraulic cylinder, ensuring it can withstand short-term overload, maintaining pressure for a period of time, and observing the pressure drop. To assess sealing performance, pressure sensor 52 can be electrically connected to an external display screen to observe pressure values. Simultaneously, mounting plate 5 can be fixed. The hydraulic cylinder under test is activated, lifting pressure plate 7 to contact pressure sensor 52, measuring the ratio of output force to theoretical value, evaluating energy conversion efficiency, simulating actual load conditions, and testing the smoothness and response speed of the hydraulic cylinder. This effectively tests the pressure resistance and load performance of the hydraulic cylinder. A sliding rod 6 is provided, which slides inside mounting plate 5. In non-working environments, pressure plate 7 is moved away from pressure sensor 52 by gravity. During operation, pressure plate 7 is lifted and contacts pressure sensor 52, thus completing the test. Limiting block 61 is located at the top of mounting plate 5, limiting the position of pressure plate 7.

[0033] like Figure 4 As shown, in a preferred embodiment, both ends of the mounting plate 5 are fixedly connected to side fixing blocks 51, and the top of the side fixing block 51 is provided with a slot 511, and the inner side of the slot 511 is slidably engaged with a support rod 8.

[0034] Therefore, by setting the slot 511, the support rod 8 can slide from the side of the side fixing block 51 to the inside of the slot 511, so that the support rod 8 can be supported between the side fixing block 51 and the top plate 12, limiting the position of the mounting plate 5. In specific use, when it is necessary to test the load performance of the hydraulic cylinder, the position of the mounting plate 5 is adjusted according to the height of the hydraulic cylinder, so that when the hydraulic cylinder is working, it can push upward to the pressure plate 7 and drive the pressure plate 7 to move upward to trigger the pressure sensor 52 to test its load performance and specific pressure value. The support rod 8 is provided with multiple different lengths, corresponding to the hydraulic cylinder to be tested. When testing hydraulic cylinders of different heights, different lengths of support rod 8 can be selected as needed, and the support rod 8 is slidably locked into the inside of the slot 511, supporting the support rod 8 between the side fixing block 51 and the top plate 12, avoiding damage to the test cylinder 2 when the hydraulic cylinder is pushed upward during the load performance test.

[0035] like Figure 1 and Figure 2 As shown in this disclosure, a placement frame 3 is fixedly connected to the middle of the top of the base 1. Two clamping plates 4 are symmetrically arranged inside the placement frame 3. A rubber pad 41 is provided on one side of the clamping plate 4. Slide grooves 31 are opened on the front and rear sides inside the placement frame 3. Slider 42 is fixedly connected to both ends of the clamping plate 4. The slider 42 is slidably connected in the slide groove 31. Threaded holes are provided on both the left and right sides of the placement frame 3. Adjusting bolts 43 are threadedly connected in the threaded holes. The ends of the adjusting bolts 43 are rotatably disposed inside the clamping plate 4.

[0036] Therefore, by setting up a placement frame 3 with a through groove at its top, the hydraulic cylinder to be tested can be easily placed from the top of the placement frame 3 into the interior of the placement frame 3. By setting up a clamping plate 4 and a rubber pad 41, two of which are symmetrically arranged at both ends of the inner side of the placement frame 3, the hydraulic cylinder placed in the placement frame 3 can be used to fix and clamp it. By setting up an adjusting bolt 43, the adjusting bolt 43 can be threaded to the inner side of the placement frame 3, and the end of the adjusting bolt 43 is rotatably set to the inner side of the clamping plate 4. Thus, rotating the adjusting bolt 43 can effectively drive the clamping plate 4 to move, thereby effectively fixing and clamping the hydraulic cylinder. By setting up a sliding groove 31, the slider 42 can be slidably connected to the inner side of the sliding groove 31, thereby effectively improving the stability of the movement of the clamping plate 4.

[0037] In practical use, the pressure resistance of the hydraulic cylinder is first tested. The hydraulic cylinder to be tested is placed into the interior of the placement frame 3 from the top. Rotating the adjusting bolt 43 can effectively drive the clamping plate 4 to move, thereby effectively fixing and clamping the hydraulic cylinder.

[0038] The start-up test cylinder 2 drives the mounting plate 5 to move downward, which in turn drives the pressure plate 7 to move downward. During the downward movement, the pressure plate 7 contacts the output end of the hydraulic cylinder, causing the pressure plate 7 to move upward and drive the top block 71 to contact the pressure sensor 52. According to the reading of the pressure sensor 52, the hydraulic cylinder reaches the rated working pressure, verifying the stability of the hydraulic cylinder under the rated working pressure, testing the maximum pressure bearing capacity of the hydraulic cylinder, ensuring that it can withstand short-term overload, and holding the pressure under high pressure for a period of time to observe the pressure drop, evaluate the sealing performance, and effectively test the pressure resistance performance of the hydraulic cylinder.

[0039] When testing the load performance of the hydraulic cylinder, adjust the height of the mounting plate 5 according to the height of the hydraulic cylinder so that the test cylinder 2 drives the mounting plate 5 to move downward. This allows the output end of the hydraulic cylinder to fully lift the pressure plate 7 and contact the pressure sensor 52 when it is working. After determining the position and height of the mounting plate 5, slide the support rod 8 into the inner side of the slot 511 and support the support rod 8 between the side fixing block 51 and the top plate 12 to prevent the hydraulic cylinder from being lifted upward and damaging the test cylinder 2 when the load performance is tested.

[0040] The hydraulic cylinder is activated so that its output axis lifts the pressure plate 7 and drives the top block 71 to contact the pressure sensor 52. The ratio of the output force to the theoretical value is measured to evaluate the energy conversion efficiency, simulate the actual load conditions, and test the smoothness and response speed of the hydraulic cylinder. Specific readings can be obtained from the pressure sensor 52, which can be used to test the load performance of the hydraulic cylinder.

[0041] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A hydraulic cylinder test bench, characterized in that, Includes a base (1), with uprights (11) fixedly connected to the four corners of the top of the base (1), and a top plate (12) fixedly connected to the top of the uprights (11). The top plate (12) is fixedly connected to a test cylinder (2), the output end of the test cylinder (2) is fixedly connected to a mounting plate (5), and the bottom end of the mounting plate (5) is provided with a pressure sensor (52). A pressure plate (7) is provided below the mounting plate (5). A top block (71) is fixedly connected to the middle of the top of the pressure plate (7). Slide rods (6) are slidably connected to the inner sides of both ends of the mounting plate (5). The slide rods (6) are fixedly connected to the top of the pressure plate (7). A limit block (61) is fixedly connected to the top of the slide rods (6).

2. The hydraulic cylinder test bench according to claim 1, characterized in that: Both ends of the mounting plate (5) are fixedly connected to side fixing blocks (51), and the top of the side fixing block (51) is provided with a slot (511), and a support rod (8) is slidably engaged on the inner side of the slot (511).

3. The hydraulic cylinder test bench according to claim 2, characterized in that: A placement frame (3) is fixedly connected to the middle of the top of the base (1). Two clamping plates (4) are symmetrically arranged inside the placement frame (3). A rubber pad (41) is provided on one side of the clamping plate (4).

4. A hydraulic cylinder test bench according to claim 3, characterized in that: The placement frame (3) has sliding grooves (31) on both the front and rear sides. Both ends of the clamping plate (4) are fixedly connected to sliders (42), and the sliders (42) are slidably connected in the sliding grooves (31).

5. A hydraulic cylinder test bench according to claim 4, characterized in that: The placement frame (3) has threaded holes on both the left and right sides, and an adjusting bolt (43) is threaded into the threaded hole. The end of the adjusting bolt (43) is rotatably disposed inside the clamping plate (4).

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