Pressure test equipment for hydraulic cylinder production

Abstract

The utility model belongs to the technical field of hydraulic cylinder production, and particularly relates to pressure test equipment for hydraulic cylinder production, which comprises a base and a hydraulic cylinder main body, an equipment bracket is arranged on the upper surface of the base, a fixing mechanism is arranged between the equipment bracket and the hydraulic cylinder main body, and the side surfaces of the fixing mechanism are respectively connected with a first sliding sleeve; second sliding sleeves are connected to the side surfaces of the fixing mechanisms correspondingly, sliding rails are connected to the inner wall of the equipment support, an electric push rod is installed between the equipment support and the fixing mechanisms, a pressure sensor is installed on the upper surface of the base, the output end of the pressure sensor is connected with an electric wire, and the end of the electric wire is connected with a sensor digital displayer. According to the utility model, through cooperative use of the electric push rod, the pressure sensor, the wire and the sensor digital display instrument, a continuous curve of performance change trends in different pressure intervals can be formed after testing, so that the testing efficiency can be improved, and meanwhile, the continuity and systematicness of data can be improved during data analysis and quality evaluation.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic cylinder manufacturing technology, specifically relating to a testing equipment for hydraulic cylinder manufacturing. Background Technology

[0002] A hydraulic cylinder is an actuator that converts hydraulic energy into mechanical energy. It is widely used in various mechanical equipment to achieve linear reciprocating motion or oscillating motion. When high-pressure fluid enters one end of the hydraulic cylinder, it pushes the piston to move to the other end. The movement of the piston drives the connected load (such as mechanical parts) to achieve linear motion. By controlling the flow rate and pressure of the fluid, the movement speed and thrust of the piston can be precisely controlled.

[0003] Hydraulic cylinder production pressure testing equipment is a specialized device used to test the performance and safety of hydraulic cylinders. Its core function is to conduct pressure tests on hydraulic cylinders by simulating actual working conditions to ensure that they meet design and usage requirements.

[0004] For example, a hydraulic cylinder pressure testing device with publication number CN221033450U has the following advantages compared with the prior art: It uses a fixing device to fix the fixed end of the hydraulic cylinder under test, preventing the cylinder from tipping over during testing; it uses an adjusting device to provide pressure to the hydraulic cylinder under test and adjusts the pressure as needed; it uses a protective device to seal the testing area, preventing malfunctions of the hydraulic cylinder during testing from affecting the working environment; it uses a limiting device to restrict the movement trajectory of the adjusting device; it uses a speed measuring device to record the extension and retraction rate of the hydraulic cylinder, facilitating the collection of test data; and it uses an oil collecting device to collect the oil leaking from the hydraulic cylinder during testing, reducing the labor intensity required for operators to clean the equipment and improving the practicality of the equipment.

[0005] Existing pressure testing equipment for hydraulic cylinder production has significant limitations in practical use. Currently, it mainly relies on counterweights to apply pressure to the hydraulic cylinder to test its pressure-bearing capacity. However, this traditional pressure supply method has revealed many drawbacks in actual operation.

[0006] When testing hydraulic cylinders at different pressure levels, operators must frequently adjust the weight of the counterweights. This process is not only cumbersome but also requires a significant amount of time and effort to precisely adjust the number of counterweights, thus greatly reducing overall testing efficiency.

[0007] More importantly, the results obtained from this counterweight-based testing method exhibit a point-like distribution. It fails to generate a continuous curve that intuitively reflects the performance trends of the hydraulic cylinder across different pressure ranges. This point-like data not only makes it difficult to comprehensively and accurately assess the hydraulic cylinder's performance across the entire working pressure range, but also lacks sufficient coherence and systematicity in data analysis and quality assessment, posing significant challenges to subsequent production decisions and quality control. Utility Model Content

[0008] The purpose of this invention is to provide a pressure testing device for hydraulic cylinder production, aiming to solve the problem that current hydraulic cylinder pressure testing devices mainly rely on counterweights to apply pressure to the hydraulic cylinder. When different pressure levels of the hydraulic cylinder need to be tested, the operator must frequently adjust the weight of the counterweight, which greatly reduces the overall testing efficiency. Furthermore, the results obtained by this counterweight-based testing method exhibit a point-like distribution, which cannot form a continuous curve that can intuitively reflect the performance change trend of the hydraulic cylinder in different pressure ranges.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a pressure testing device for hydraulic cylinder production, comprising a base and a hydraulic cylinder body, an equipment bracket mounted on the upper surface of the base, a fixing mechanism provided between the equipment bracket and the hydraulic cylinder body, a first sliding sleeve connected to the side surface of the fixing mechanism, a second sliding sleeve connected to the side surface of the fixing mechanism, a slide rail connected to the inner wall of the equipment bracket, an electric push rod installed between the equipment bracket and the fixing mechanism, a pressure sensor mounted on the upper surface of the base, an electrical wire connected to the output end of the pressure sensor, and a sensor digital display connected to the end of the electrical wire mounted on the side surface of the equipment bracket;

[0010] To ensure the stability of the fixed mechanism's movement, as a testing device for hydraulic cylinder production according to this utility model, preferably, the first sliding sleeve, the second sliding sleeve, and the slide rail are symmetrically arranged on both sides of the hydraulic cylinder body. The first sliding sleeve and the second sliding sleeve have the same size. The first sliding sleeve and the slide rail are connected by a limiting and guiding structure, and the second sliding sleeve and the slide rail are connected by a limiting and guiding structure.

[0011] In order to adjust the pressure on the main body of the hydraulic cylinder, as a testing device for hydraulic cylinder production according to this utility model, preferably, the electric push rod and the fixed mechanism form a lifting structure.

[0012] In order to record the pressure data of the hydraulic cylinder body, as a pressure testing device for hydraulic cylinder production according to this utility model, preferably, the pressure sensor is a DTh1za41 pressure-sensitive and force-sensitive sensor, and the pressure sensor is electrically connected to the sensor digital display through wires.

[0013] As a testing device for hydraulic cylinder production according to this utility model, preferably, the fixing mechanism includes a base plate, a threaded rod, a top pressure plate, an upper nut, a lower nut, and a through hole. The upper surface of the base plate is connected to the threaded rod, and the surface of the threaded rod is fitted with the top pressure plate. A through hole is opened on the surface of the top pressure plate near the threaded rod. The upper nut is fitted on the surface of the threaded rod located on the upper surface of the top pressure plate, and the lower nut is fitted on the surface of the threaded rod located on the lower surface of the top pressure plate.

[0014] In order to adjust the height of the top pressure plate to accommodate hydraulic cylinder bodies of different sizes, as a testing device for hydraulic cylinder production according to this utility model, preferably, the threaded rod and the through hole are symmetrically arranged on both sides of the top pressure plate, and the top pressure plate is slidably connected to the threaded rod through the through hole.

[0015] In order to fix the position of the top pressure plate and thus fix the main body of the hydraulic cylinder, as a testing equipment for hydraulic cylinder production according to this utility model, preferably, the upper nut and the lower nut are symmetrically arranged on both sides of the top pressure plate, the upper nut and the lower nut are the same size, the upper nut and the threaded rod are threadedly connected, and the lower nut and the threaded rod are threadedly connected.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention, through the combined use of an electric actuator, a pressure sensor, wires, and a digital display of the sensor, can generate a continuous curve showing the performance change trend within different pressure ranges after testing. This not only improves testing efficiency but also enhances the coherence and systematic nature of the data during data analysis and quality assessment.

[0018] This utility model, through the combined use of a base plate, threaded rod, top pressure plate, upper nut, lower nut, and through hole, can quickly fix the hydraulic cylinder body. At the same time, the height of the lower nut can be adjusted to accommodate hydraulic cylinder bodies of different sizes, thereby improving the practicality and applicability of the equipment. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall assembly structure provided for an embodiment of this application.

[0021] Figure 2 This is a side view structural diagram provided for an embodiment of this application.

[0022] Figure 3 A schematic diagram of the fixing mechanism provided in the embodiments of this application.

[0023] Figure 4 An exploded view of the fixing mechanism provided in the embodiments of this application.

[0024] Figure 5 A cross-sectional view of the fixing mechanism provided in an embodiment of this application.

[0025] In the diagram: 1. Base; 2. Equipment support; 3. Hydraulic cylinder body; 401. Base plate; 402. Threaded rod; 403. Top pressure plate; 404. Upper nut; 405. Lower nut; 406. Through hole; 5. First sliding sleeve; 6. Second sliding sleeve; 7. Slide rail; 8. Electric actuator; 9. Pressure sensor; 10. Wire; 11. Sensor digital display. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5 The present invention provides the following technical solution: a pressure testing device for hydraulic cylinder production, comprising a base 1 and a hydraulic cylinder body 3, an equipment bracket 2 is installed on the upper surface of the base 1, a fixing mechanism is provided between the equipment bracket 2 and the hydraulic cylinder body 3, a first sliding sleeve 5 is connected to the side surface of the fixing mechanism, a second sliding sleeve 6 is connected to the side surface of the fixing mechanism, a slide rail 7 is connected to the inner wall of the equipment bracket 2, an electric push rod 8 is installed between the equipment bracket 2 and the fixing mechanism, a pressure sensor 9 is installed on the upper surface of the base 1, a wire 10 is connected to the output end of the pressure sensor 9, and a sensor digital display 11 is connected to the end of the wire 10 installed on the side surface of the equipment bracket 2;

[0028] Preferably, the first sliding sleeve 5, the second sliding sleeve 6 and the slide rail 7 are symmetrically arranged on both sides of the hydraulic cylinder body 3. The first sliding sleeve 5 and the second sliding sleeve 6 have the same size. The first sliding sleeve 5 and the slide rail 7 are connected by a limiting and guiding structure, and the second sliding sleeve 6 and the slide rail 7 are connected by a limiting and guiding structure.

[0029] In practical use, when the fixing mechanism is subjected to force, it can drive the first sliding sleeve 5 and the second sliding sleeve 6 to slide on the surface of the slide rail 7, which can ensure the smoothness of its movement.

[0030] Preferably, the electric actuator 8 and the fixed mechanism form a lifting structure;

[0031] In actual use, the electric actuator 8 can drive the fixing mechanism to move longitudinally when it runs, thereby adjusting the position of the fixing mechanism.

[0032] Preferably, the pressure sensor 9 is a DTh1za41 pressure and force sensor, and the pressure sensor 9 is electrically connected to the sensor digital display 11 via the wire 10.

[0033] In practical use, when the pressure sensor 9 is subjected to external pressure, it can transmit the pressure data it receives to the sensor digital display 11 via the wire 10 and record it.

[0034] Preferably, the fixing mechanism includes a base plate 401, a threaded rod 402, a top pressure plate 403, an upper nut 404, a lower nut 405, and a through hole 406. The upper surface of the base plate 401 is connected to the threaded rod 402, and the surface of the threaded rod 402 is fitted with the top pressure plate 403. The surface of the top pressure plate 403 near the threaded rod 402 is provided with a through hole 406. The surface of the threaded rod 402 located on the upper surface of the top pressure plate 403 is fitted with the upper nut 404, and the surface of the threaded rod 402 located on the lower surface of the top pressure plate 403 is fitted with the lower nut 405.

[0035] Preferably, the threaded rod 402 and the through hole 406 are symmetrically arranged on both sides of the top pressure plate 403, and the top pressure plate 403 is slidably connected to the threaded rod 402 through the through hole 406;

[0036] In practical use, the top pressure plate 403 can slide on the surface of the threaded rod 402 through the through hole 406, thereby adjusting the height of the top pressure plate 403.

[0037] Preferably, the upper nut 404 and the lower nut 405 are symmetrically arranged on both sides of the top pressure plate 403. The upper nut 404 and the lower nut 405 are the same size. The upper nut 404 and the threaded rod 402 are connected by threads, and the lower nut 405 and the threaded rod 402 are connected by threads.

[0038] In practical use, the position of the top pressure plate 403 can be fixed by the threaded connection between the upper nut 404 and the threaded rod 402, and the threaded connection between the lower nut 405 and the threaded rod 402.

[0039] The working principle of this utility model in specific use is as follows: When using this pressure testing equipment, first rotate the upper nut 404. When the upper nut 404 rotates on the surface of the threaded rod 402, it can move upward, and then pull the top pressure plate 403 upward. Next, place the hydraulic cylinder body 3 on the surface of the bottom support plate 401 so that its telescopic end passes through the bottom support plate 401. Then, loosen the top pressure plate 403 and rotate the upper nut 404 in the opposite direction. When the upper nut 404 rotates in the opposite direction on the surface of the threaded rod 402, it can move downward. When the upper nut 404 moves downward to the surface of the top pressure plate 403, the position of the top pressure plate 403 can be fixed. When the model of the hydraulic cylinder body 3 changes, resulting in a change in its length, the lower nut 405 can be rotated. When the lower nut 405 rotates on the surface of the threaded rod 402, it can move longitudinally. This can adjust the distance between the top pressure plate 403 and the bottom support plate 401 after it is fixed, so as to adapt to hydraulic cylinder bodies 3 of different sizes.

[0040] After the hydraulic cylinder body 3 is fixed, the electric push rod 8 can be operated. When the electric push rod 8 is running, it can squeeze the fixing mechanism. The fixing mechanism being squeezed can drive the electric push rod 8 installed thereon to squeeze the pressure sensor 9. When the pressure sensor 9 is squeezed, it can transmit the pressure data received to the sensor digital display 11 via the wire 10. At the same time, the data of the extension and retraction distance of the electric push rod 8 can reflect the extension and retraction data of the hydraulic cylinder body 3. This data can be transmitted to the sensor digital display 11, so that the retraction distance of the hydraulic cylinder body 3 under a specific pressure can be reflected. Then, by controlling the gradual change of the electric push rod 8, the retraction distance of the hydraulic cylinder body 3 under different pressures can be tested. In this way, the test pressure curve data can be generated in the sensor digital display 11.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pressure testing device for hydraulic cylinder production, comprising a base (1) and a hydraulic cylinder body (3), characterized in that: The upper surface of the base (1) is equipped with an equipment bracket (2). A fixing mechanism is provided between the equipment bracket (2) and the hydraulic cylinder body (3). The side surface of the fixing mechanism is connected to a first sliding sleeve (5) and a second sliding sleeve (6). The inner wall of the equipment bracket (2) is connected to a slide rail (7). An electric push rod (8) is installed between the equipment bracket (2) and the fixing mechanism. The upper surface of the base (1) is equipped with a pressure sensor (9). The output end of the pressure sensor (9) is connected to a wire (10). The end of the wire (10) installed on the side surface of the equipment bracket (2) is connected to a sensor digital display (11).

2. The testing equipment for hydraulic cylinder production according to claim 1, characterized in that: The first sliding sleeve (5), the second sliding sleeve (6) and the slide rail (7) are symmetrically arranged on both sides of the hydraulic cylinder body (3). The first sliding sleeve (5) and the second sliding sleeve (6) have the same size. The first sliding sleeve (5) and the slide rail (7) are connected by a limiting guide structure. The second sliding sleeve (6) and the slide rail (7) are connected by a limiting guide structure.

3. The pressure testing equipment for hydraulic cylinder production according to claim 1, characterized in that: The electric actuator (8) and the fixed mechanism form a lifting structure.

4. The testing equipment for hydraulic cylinder production according to claim 1, characterized in that: The pressure sensor (9) is a DTh1za41 pressure and force sensor, and the pressure sensor (9) is electrically connected to the sensor digital display (11) via a wire (10).

5. The testing equipment for hydraulic cylinder production according to claim 1, characterized in that: The fixing mechanism includes a base plate (401), a threaded rod (402), a top pressure plate (403), an upper nut (404), a lower nut (405), and a through hole (406). The upper surface of the base plate (401) is connected to the threaded rod (402), and the surface of the threaded rod (402) is fitted with the top pressure plate (403). The surface of the top pressure plate (403) near the threaded rod (402) has a through hole (406). The surface of the threaded rod (402) on the upper surface of the top pressure plate (403) is fitted with the upper nut (404), and the surface of the threaded rod (402) on the lower surface of the top pressure plate (403) is fitted with the lower nut (405).

6. The testing equipment for hydraulic cylinder production according to claim 5, characterized in that: The threaded rod (402) and the through hole (406) are symmetrically arranged on both sides of the top pressure plate (403), and the top pressure plate (403) is slidably connected to the threaded rod (402) through the through hole (406).

7. A testing equipment for hydraulic cylinder production according to claim 5, characterized in that: The upper nut (404) and the lower nut (405) are symmetrically arranged on both sides of the top pressure plate (403). The upper nut (404) and the lower nut (405) are the same size. The upper nut (404) is threaded to the threaded rod (402), and the lower nut (405) is threaded to the threaded rod (402).

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