Pneumatic rod detection mechanism with vibration simulation and eccentric load functions

Abstract

The utility model relates to pneumatic rod technical field especially a kind of vibration simulation and the detection mechanism of pneumatic rod with eccentric load function, including test box, its upper part is configured to open structure, two mobile parts are axially parallel slidingly arranged inside it, adjustable connecting mechanism is symmetrically arranged on the opposite surface of two mobile parts, the to-be-tested pneumatic rod is detachably connected between adjustable connecting mechanism, two mobile parts are respectively with the telescopic mechanism that can be detachably arranged between corresponding test box inner wall;Vibration support mechanism, it is set to test box lower part, for the rigid support or flexible support to test box, and it can be switched between rigid support and flexible support;Vibration mechanism, it is set to test box body.The utility model changes connection position flexibly by adjustable connecting mechanism, realizes eccentric load test, vibration support mechanism can switch rigid-flexible support, adapt to different scenarios, vibration mechanism simulates actual vibration environment, and test result is more valuable.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic rod technology, and in particular to a pneumatic rod detection mechanism that combines vibration simulation with off-center load function. Background Technology

[0002] In pneumatic rod testing, existing devices reciprocate the extension and retraction of the output rod, but they suffer from the following problems: First, current pneumatic rod testing devices only focus on performance testing under heavy loads, neglecting the off-center load conditions (such as installation angle deviations and uneven stress) that the pneumatic rod may face in actual installation environments. Due to the lack of accurate simulation of off-center load conditions, the test data cannot accurately reflect the fatigue life of the pneumatic rod in complex installation scenarios. Compared with the test results under non-off-center load conditions, the performance degradation pattern under actual working conditions differs significantly, resulting in a substantial reduction in the engineering reference value of the test results. Second, traditional testing mechanisms have limited support designs for the test box, providing only a single form of support (such as rigid fixation), and cannot flexibly switch between rigid and flexible support. However, in practical applications, different devices have different requirements for the support stiffness of pneumatic rods (such as precision instruments requiring flexible buffering, and heavy machinery requiring rigid fixation). A single support method is difficult to cover the diverse working conditions, resulting in insufficient matching between the test scenario and the actual use scenario, and poor data universality. Third, existing technologies have failed to effectively simulate the vibration environment faced by pneumatic rods in actual operation (such as mechanical operation vibration, transportation bumps, etc.). Vibration load is a key factor affecting the wear of pneumatic rod seals and the fatigue of connecting parts. Due to the lack of superimposed vibration test, the test results can only reflect the performance under static or quasi-static conditions, and cannot accurately reveal the accelerated decay effect of the vibration environment on the life of the pneumatic rod. This leads to a significant deviation between the test data and the feedback from field use, making it difficult to guide product design optimization.

[0003] In summary, existing pneumatic rod testing technologies suffer from a triple deficiency in terms of off-center loading conditions, diverse support methods, and vibration environment simulation, resulting in test results that are out of sync with actual operating conditions and large data deviations. Consequently, they cannot provide effective support for product reliability assessment, life prediction, and engineering applications. Utility Model Content

[0004] The present invention aims to solve the above-mentioned defects and provide a pneumatic rod detection mechanism that combines vibration simulation with off-center loading function.

[0005] To overcome the deficiencies in the background technology, the technical solution adopted by this utility model to solve its technical problem is: a pneumatic rod detection mechanism with vibration simulation and off-center loading function, including a test box, the upper part of which is constructed as an open structure, and two moving parts are axially parallel and slidably arranged inside. Adjustable connecting mechanisms are symmetrically arranged on the opposite surfaces of the two moving parts, which are used to flexibly change the connection position between the adjustable connecting mechanisms and the pneumatic rod to be tested. The pneumatic rod to be tested is detachably connected between the adjustable connecting mechanisms. Telescopic mechanisms are detachably arranged between the two moving parts and the corresponding inner walls of the test box. When the telescopic mechanisms synchronously drive the two moving parts to perform relative reciprocating motion, the pneumatic rod to be tested is driven to perform high-frequency reciprocating telescopic motion. A vibration support mechanism is provided at the bottom of the test box to provide rigid or flexible support for the test box, and it can switch between rigid and flexible support. A vibration mechanism is mounted on the test chamber.

[0006] Further improvements include the provision of a guide rail arranged axially inside the test chamber, and a slider slidably mounted on the guide rail, the slider being detachably connected to the moving part.

[0007] A further improvement includes a ranging sensor disposed on the end face of one of the moving parts.

[0008] Further improvements include the provision of a top cover on the upper part of the test chamber, which, when closed with the test chamber, forms a sealed space inside the test chamber, and the test chamber is equipped with a vacuum mechanism to extract air from the sealed space.

[0009] Further improvements include the provision of a temperature control mechanism on the top cover.

[0010] Further improvements include providing at least one set of vibration support mechanisms, each set of vibration support mechanisms including a small-diameter rod and a large-diameter rod coaxially connected to the small-diameter rod, the small-diameter rod being vertically inserted into the interior of the test box, and a vibration spring being sleeved on the small-diameter rod between the test box and the large-diameter rod to provide flexible support for the test box through the vibration spring, and a freely removable semi-ring sleeve being provided between the test box and the large-diameter rod.

[0011] Further improvements include the adjustable connection mechanism comprising a fixing member with a U-shaped cross-section, wherein the fixing member has a plurality of hinge holes for inserting bolts that are radially equidistantly spaced.

[0012] The beneficial effects of this utility model are as follows: This design flexibly changes the connection position through an adjustable connection mechanism to achieve off-center load testing; the vibration support mechanism can switch between rigid and flexible supports to adapt to different scenarios; the vibration mechanism simulates the actual vibration environment, making the test results more valuable. The guide rail and slider ensure movement stability, the distance sensor detects stroke accuracy, the vacuum mechanism can detect sealing performance, the temperature control mechanism enables testing at different temperatures, and the telescopic mechanism drives the pneumatic rod to reciprocate at high frequency, accurately simulating actual telescopic conditions and meeting diverse testing needs. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a front sectional view of the present invention; Figure 2 This is a front view of the vibration support mechanism in this utility model; Figure 3 This is a right view of the adjustable connecting mechanism in this utility model; In the figure, 1-vibration support mechanism, 2-moving part, 3-telescopic mechanism, 4-distance sensor, 5-guide rail, 6-pneumatic rod under test, 7-top cover, 8-temperature control mechanism, 9-adjustable connection mechanism, 10-slider, 11-test box, 12-vibration mechanism, 13-vacuum mechanism; 101-Small diameter rod, 102-Large diameter rod, 103-Half ring sleeve, 104-Vibration spring; 901 - Fastener, 902 - Hinge hole. Detailed Implementation

[0015] 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 only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort in accordance with the embodiments of the basic utility model are within the scope of protection of this utility model.

[0016] refer to Figure 1A pneumatic rod testing mechanism with vibration simulation and off-center load function includes a test box 11, the upper part of which is constructed with an open structure to facilitate the loading and unloading of the pneumatic rod 6 to be tested. Two moving parts 2 are axially parallel and slidably arranged inside the test box. Adjustable connecting mechanisms 9 are symmetrically arranged on the opposite surfaces of the two moving parts 2 to flexibly change the connection position between the adjustable connecting mechanisms 9 and the pneumatic rod 6 to be tested, so as to realize the testing of the pneumatic rod under off-center load. The pneumatic rod 6 to be tested is detachably connected between the adjustable connecting mechanisms 9. Telescopic mechanisms 3 are detachably arranged between the two moving parts 2 and the corresponding inner walls of the test box 11. When the telescopic mechanisms 3 synchronously drive the two moving parts 2 to perform relative reciprocating motion, the pneumatic rod 6 to be tested is driven to perform high-frequency reciprocating telescopic motion. In this way, the life cycle test of the pneumatic rod is completed, accurately simulating its telescopic working condition in actual use. Vibration support mechanism 1 is disposed at the lower part of the test box 11 and is used to provide rigid or flexible support for the test box 11. It can switch between rigid and flexible support to meet the support requirements of different test scenarios. The vibration mechanism 12 is installed on the test box 11 to generate high-frequency vibration, thereby simulating the vibration environment faced by the pneumatic rod in actual operation, making the test results more practically valuable.

[0017] In this embodiment, a guide rail 5 is arranged axially inside the test box 11, and a slider 10 is slidably fitted on the guide rail 5. The slider 10 is detachably connected to the moving part 2. This design ensures the stability of the moving part 2 sliding along the guide rail 5 axially.

[0018] In this embodiment, a distance sensor 4 is provided on the end face of one of the moving parts 2. The distance sensor 4 is used to detect the distance between the two moving parts 2. Through data analysis, it can also accurately detect the limit position of the pneumatic rod 6 under test during the extension and retraction process, providing reliable data support for evaluating the stroke accuracy and mechanical performance of the pneumatic rod.

[0019] In this embodiment, a top cover 7 is provided on the upper part of the test chamber 11. When the top cover 7 is closed with the test chamber 11, a sealed space can be formed inside the test chamber 11. The test chamber 11 is provided with a vacuum mechanism 13 to extract air from the sealed space. If the pneumatic rod 6 under test has a sealing performance problem, the gas inside it may leak in a vacuum environment. When the pneumatic rod is taken out, its thrust will decrease significantly due to the failure of the seal. This phenomenon can be used to intuitively judge whether the sealing performance of the pneumatic rod meets the requirements. The top cover 7 also has a protective function.

[0020] In a further embodiment, the upper cover 7 is provided with a temperature control mechanism 8, thereby realizing the cooling and heating of the sealed space, so as to enable the pneumatic rod to be detected at different ambient temperatures.

[0021] In this embodiment, reference Figure 2 The vibration support mechanism 1 is provided in at least 3 sets. Each set of the vibration support mechanism 1 includes a small diameter rod 101 and a large diameter rod 102 coaxially connected to the small diameter rod 101. The small diameter rod 101 is vertically inserted into the test box 11. A vibration spring 104 is sleeved on the small diameter rod 101 between the test box 11 and the large diameter rod 102 to provide flexible support for the test box 11. A removable semi-ring sleeve 103 is provided between the test box 11 and the large diameter rod 102. When the semi-ring sleeve 103 is installed, it can directly abut against the bottom of the test box 11 to form a rigid support. The support mode can be switched by removing or installing the semi-ring sleeve 103. The structure is compact and easy to operate.

[0022] In this embodiment, reference Figure 3 The adjustable connection mechanism 9 includes a fixing member 901 with a U-shaped cross-section. The fixing member 901 has several radially equidistant hinge holes 902 for inserting bolts. Specifically, the hinged end of the pneumatic rod is inserted into the groove of the fixing member 901, and then a bolt is inserted through the hinge hole 902 and the screw hole at the end of the pneumatic rod to achieve a detachable fixed connection. This structure allows for flexible adjustment of the pneumatic rod's installation position by selecting different hinge holes 902, enabling off-center load testing.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pneumatic rod detection mechanism that combines vibration simulation with off-center loading function, characterized in that, The test chamber (11) has an open structure on its upper part. Two moving parts (2) are axially parallel and slidably arranged inside. Adjustable connecting mechanisms (9) are symmetrically arranged on the opposite surfaces of the two moving parts (2) to flexibly change the connection position between the adjustable connecting mechanism (9) and the pneumatic rod (6) to be tested. The pneumatic rod (6) to be tested is detachably connected between the adjustable connecting mechanisms (9). Telescopic mechanisms (3) are detachably arranged between the two moving parts (2) and the corresponding inner wall of the test chamber (11). When the telescopic mechanism (3) synchronously drives the two moving parts (2) to perform relative reciprocating motion, the pneumatic rod (6) to be tested is driven to perform high-frequency reciprocating telescopic motion. Vibration support mechanism (1) is provided at the lower part of the test box (11) for providing rigid or flexible support to the test box (11), and can switch between rigid and flexible support; Vibration mechanism (12) is mounted on the test box (11).

2. The pneumatic rod detection mechanism with vibration simulation and off-center loading function as described in claim 1, characterized in that: The test box (11) is provided with a guide rail (5) arranged along the axial direction, and a slider (10) is slidably fitted on the guide rail (5). The slider (10) is detachably connected to the moving part (2).

3. The pneumatic rod detection mechanism with vibration simulation and off-center loading function as described in claim 1, characterized in that: A ranging sensor (4) is provided on the end face of one of the moving parts (2).

4. The pneumatic rod detection mechanism with vibration simulation and off-center loading function as described in claim 1, characterized in that: The test chamber (11) is covered with a top cover (7). When the top cover (7) is closed with the test chamber (11), a sealed space can be formed inside the test chamber (11). The test chamber (11) is provided with a vacuum mechanism (13) to extract air from the sealed space.

5. The pneumatic rod detection mechanism with vibration simulation and off-center loading function as described in claim 4, characterized in that: The upper cover (7) is provided with a temperature control mechanism (8).

6. The pneumatic rod detection mechanism with vibration simulation and off-center loading function as described in claim 1, characterized in that: The vibration support mechanism (1) is provided in at least 3 sets. Each set of the vibration support mechanism (1) includes a small diameter rod (101) and a large diameter rod (102) coaxially connected to the small diameter rod (101). The small diameter rod (101) is vertically inserted into the test box (11). A vibration spring (104) is sleeved on the small diameter rod (101) between the test box (11) and the large diameter rod (102) to provide flexible support for the test box (11). A removable semi-ring sleeve (103) is provided between the test box (11) and the large diameter rod (102).

7. The pneumatic rod detection mechanism with vibration simulation and off-center loading function as described in claim 1, characterized in that: The adjustable connection mechanism (9) includes a fastener (901) with a U-shaped cross-section, and the fastener (901) has a plurality of hinge holes (902) for inserting bolts that are radially equidistantly provided.

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