A test tool for an oil cylinder

By designing a hydraulic cylinder testing fixture, the problem of existing devices being unable to observe oil leaks and measure piston stroke was solved, enabling safe and reliable simulation testing. It has highly specialized functions and ensures testing safety.

CN224396834UActive Publication Date: 2026-06-23SHANGHAI BETT TRANSMISSION EQUIP

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI BETT TRANSMISSION EQUIP
Filing Date
2025-06-24
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing hydraulic cylinder life testing equipment cannot visually observe oil leaks or measure the piston stroke of the hydraulic cylinder, which hinders the collection of test data and poses safety hazards.

Method used

A hydraulic cylinder testing fixture was designed, including a test base, a closed-ring test side panel, and clamping fixtures for the cylinder tail and cylinder head. It is equipped with linear guide rails and pulleys, and the cylinder tail and head are fixed by pins. It is also equipped with components to prevent the cylinder body from popping out, so as to achieve safe and reliable simulation testing.

Benefits of technology

It enables real-time monitoring of the test under visual conditions, ensuring the safety and reliability of the test, and has highly specialized functions, avoiding the threat to operators caused by cylinder failure.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of oil cylinder test tool, including test base, closed ring is equipped with test side wall on the test base, test side wall and the test base between form the oil cylinder clamping groove cavity of notch upwards, cylinder tail clamping fixture fixedly connected on the test base is equipped in oil cylinder clamping groove cavity, cylinder head clamping fixture is slidably connected on test base, cylinder head clamping fixture is made close to or far from the direction of motion of cylinder tail clamping fixture;Linear guide rail is equipped on the test base, the cylinder head clamping fixture includes linear slider slidably connected on linear guide rail, linear slider is equipped with the cylinder head clamping plate extending upwards, first side hole is opened on the cylinder head clamping plate, and first pin shaft is inserted in first side hole and can be pulled out.The test tool has the characteristics of strong speciality, safe and reliable use, overall function is perfect, and practicality is strong.
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Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and more specifically, it relates to a hydraulic cylinder testing tooling. Background Technology

[0002] The hydraulic cylinder testing fixture involved in this application is mainly used for hydraulic cylinder life testing. Its main function is to prevent the hydraulic cylinder from breaking down after reaching its life limit, thus threatening the safety of operators. Currently, when conducting hydraulic cylinder life tests in factories, the entire hydraulic cylinder is placed in an iron box to prevent accidental injury to operators. Because the iron box is a closed space, it is impossible to visually observe oil leaks or measure the piston stroke of the hydraulic cylinder, hindering the collection of normal test data. Therefore, it is necessary to improve the existing hydraulic cylinder testing fixture by redesigning and modifying it to avoid hindering the collection of test data. Accordingly, this utility model proposes a hydraulic cylinder testing fixture. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a hydraulic cylinder testing fixture that is highly specialized and safe and reliable to use.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: The hydraulic cylinder testing fixture involved in this utility model includes a test base, on which a test side wall in the shape of a closed ring is provided. The test side wall and the test base form a hydraulic cylinder clamping cavity with the slot facing upward. A cylinder tail clamping fixture fixedly connected to the test base and a cylinder head clamping fixture slidably connected to the test base are provided in the hydraulic cylinder clamping cavity. The cylinder head clamping fixture moves towards or away from the cylinder tail clamping fixture.

[0005] The present invention is further configured such that: the test base is provided with a linear guide rail, the cylinder head clamping fixture includes a linear slider slidably connected to the linear guide rail, the linear slider is provided with an upwardly extending cylinder head clamping plate, the cylinder head clamping plate is provided with a first side hole, and a first pin is inserted into the first side hole.

[0006] The present invention is further configured such that: a groove extending along the length direction is provided on the linear guide rail, and a pulley that rolls inside the groove is provided, the pulley being rotatably connected to the linear slider.

[0007] The present invention is further configured such that: the cylinder tail clamping fixture includes two cylinder tail clamping plates arranged at left and right intervals and extending upward, and also includes a second side hole that extends laterally through the two cylinder tail clamping plates, and a second pin is inserted into the second side hole that can be pulled out.

[0008] The present invention is further configured to include a third side hole that extends laterally through the test sidewall, the third side hole being close to the opening of the cylinder clamping slot, and a third pin that can be inserted into the third side hole.

[0009] In summary, this utility model has the following beneficial effects:

[0010] 1. Simulation tests can be conducted under visual observation, and the test results can be monitored in real time.

[0011] 2. A cylinder ejection prevention component is configured to prevent explosion and ensure safe and reliable testing.

[0012] 3. Non-standardized design and manufacturing, highly specialized. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a partial structural schematic diagram of the present invention;

[0015] Figure 3 This is a partial structural schematic diagram of the present invention;

[0016] Figure 4 This is a schematic diagram illustrating the structure of the cylinder head clamping fixture of this utility model;

[0017] Figure 5 This is a schematic diagram of the utility model in use. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0019] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0020] Example 1

[0021] See Figures 1 to 5As shown, the hydraulic cylinder testing fixture involved in this embodiment includes a test base 1. The test base 1 is provided with a test side 2 in the shape of a closed ring. The test side 2 and the test base 1 form a hydraulic cylinder clamping cavity 3 with the slot facing upward. The hydraulic cylinder clamping cavity 3 is provided with a cylinder tail clamping fixture 4 fixedly connected to the test base and a cylinder head clamping fixture 5 slidably connected to the test base. The cylinder head clamping fixture 5 moves towards or away from the cylinder tail clamping fixture 4.

[0022] Furthermore, the test base 1 is provided with a linear guide rail 101, and the cylinder head clamping fixture 5 includes a linear slider 501 slidably connected to the linear guide rail. The linear slider 501 is provided with an upwardly extending cylinder head clamping plate 502. The cylinder head clamping plate 502 is provided with a first side hole 503, and a first pin 504 can be inserted into the first side hole 503.

[0023] Furthermore, the linear guide rail 101 is provided with a wheel groove 102 extending along the length direction, and a pulley 505 is provided in the wheel groove 102 for rolling, and the pulley 505 is rotatably connected to the linear slider 501.

[0024] Furthermore, the cylinder tail clamping fixture 4 includes two cylinder tail clamping plates 401 arranged at left and right intervals and extending upwards, and also includes a second side hole 402 that extends laterally through the two cylinder tail clamping plates, and a second pin 403 is inserted into the second side hole 402.

[0025] In this implementation scheme, the cylinder tail of the cylinder to be tested is first fixedly clamped between the two cylinder tail clamping plates 401, and then the second pin 403 is used for insertion and fixation to achieve the function of fixing the cylinder tail to the cylinder tail clamping fixture 4; then the cylinder head of the cylinder to be tested is fixedly clamped on the cylinder head clamping plate 502, and then the first pin 504 is used for insertion and fixation to achieve the function of fixing the cylinder head to the cylinder head clamping fixture 5; finally, the cylinder is connected to the oil supply pipe for simulated working test.

[0026] The test side enclosure 2 also seals off the area around the test base 1 to prevent oil leakage and to allow for observation of any oil leakage.

[0027] Example 2

[0028] See Figures 1 to 5 As shown, the hydraulic cylinder testing fixture involved in this embodiment is further configured, based on embodiment 1, to include a third side hole 201 that penetrates the test side panel 2 laterally. The third side hole 201 is close to the opening of the hydraulic cylinder clamping cavity 3, and a third pin 202 is inserted into the third side hole 201 that can be pulled out.

[0029] In this embodiment, the third side hole 201 and the third pin 202 are used to provide protection above the oil cylinder before the oil supply pipe is connected for testing, so as to prevent the tested oil cylinder from breaking down after its life limit and causing a situation that threatens the safety of the on-site test personnel.

[0030] The hydraulic cylinder testing fixture involved in this utility model can perform simulated tests under visual observation and can monitor the test situation in real time; it is equipped with a component to prevent cylinder body ejection, which plays an explosion-proof role and makes the test safe and reliable; and it adopts non-standard design and manufacturing, which is highly specialized, has complete overall functions, and is highly practical.

[0031] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model and simplifying the description, and do not 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, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0032] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model 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 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 based on the specific circumstances.

[0033] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A cylinder test fixture comprising a test base, characterized by, The test base is provided with a test side ring in the shape of a closed ring. The test side ring and the test base form a cylinder clamping cavity with the slot facing upward. The cylinder clamping cavity is provided with a cylinder tail clamping fixture fixedly connected to the test base and a cylinder head clamping fixture slidably connected to the test base. The cylinder head clamping fixture moves towards or away from the cylinder tail clamping fixture.

2. The hydraulic cylinder testing fixture according to claim 1, characterized in that, The test base is provided with a linear guide rail, and the cylinder head clamping fixture includes a linear slider that is slidably connected to the linear guide rail. The linear slider is provided with an upwardly extending cylinder head clamping plate. A first side hole is provided on the cylinder head clamping plate, and a first pin is inserted into the first side hole.

3. The hydraulic cylinder testing fixture according to claim 2, characterized in that, The linear guide rail has a groove extending along its length, and a pulley that rolls inside the groove is rotatably connected to the linear slider.

4. The hydraulic cylinder testing fixture according to any one of claims 1-3, characterized in that, The cylinder tail clamping fixture includes two cylinder tail clamping plates arranged at left and right intervals and extending upwards, and also includes a second side hole that extends laterally through the two cylinder tail clamping plates, into which a second pin can be inserted pullably.

5. The hydraulic cylinder testing fixture according to claim 1, characterized in that, It also includes a third side hole that extends laterally through the test sidewall, the third side hole being close to the opening of the cylinder clamping slot, and a third pin that can be pulled out and inserted into the third side hole.