Multi-station testing device for pressure resistance and pressure maintaining effect of finished oil cylinder

Abstract

The utility model discloses a multi-station testing device for the pressure resistance and the pressure maintaining effect of a finished oil cylinder, and belongs to the technical field of oil cylinder detection device.The testing device comprises a control machine and a detection table arranged on one side of the control machine, an oil cylinder body is arranged at the upper end of the detection table, and an oil pipe used for being connected with an oil cylinder body connector is arranged on the detection table; the upper end of the detection table is fixedly provided with a fixing frame used for connecting an oil pipe, and the detection table is provided with a measuring mechanism; a lug ring of a shell of the oil cylinder body is inserted and positioned through a limiting column, the other end of the lug ring is inserted into a connecting plate and inserted through a pin rod, detection is conducted after oil is supplied through an oil pipe, a piston of the oil cylinder body drives the connecting plate and a second sliding block above the connecting plate to synchronously move along a batten when moving, and when moving to the maximum distance, detection is conducted. Compared with a traditional displacement sensor, the displacement sensor is convenient to disassemble and assemble, and the efficiency of testing a large number of oil cylinders is higher.

Description

Technical Field

[0001] The present application relates to the technical field of oil cylinder detection devices, and in particular to a multi-station testing device for the pressure resistance and pressure maintaining effect of a finished oil cylinder. Background Art

[0002] The cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. Its working stability is an important guarantee for the reliability of the hydraulic press. During long-term operation tests, the cylinder often suffers from problems such as cylinder pulling, internal and external leakage. Therefore, after the cylinder is assembled, certain process controls are required to ensure the quality of the cylinder.

[0003] During the pressure-holding and pressure-resistant test, the measurement of the maximum expansion and contraction value is one of the key links. This measurement usually relies on a precise displacement sensor, and the specific measurement point at the expansion end depends on the installation method of the sensor and the design of the cylinder. However, there are some problems with the measurement using a displacement sensor. The inspection of the cylinder is multiple and repetitive, and the displacement sensor needs to be installed on the cylinders that need to be inspected in turn, which also leads to the need for frequent disassembly and assembly of the displacement sensor, thus affecting the efficiency of the cylinder test.

[0004] Therefore, the present application provides a multi-station testing device for the pressure resistance and pressure holding effect of a finished oil cylinder to solve the above problems. Utility Model Content

[0005] The present application provides a multi-station testing device for the pressure resistance and pressure holding effect of a finished oil cylinder, aiming to solve the problem raised in the background art that the disassembly and assembly of the displacement sensor is very inconvenient when performing pressure holding and pressure resistance tests on the oil cylinder.

[0006] To achieve the above objectives, the present application provides the following technical solution: a multi-station testing device for the pressure resistance and pressure holding effect of a finished oil cylinder, comprising a control machine and a testing platform arranged on one side of the control machine, a cylinder body being arranged at the upper end of the testing platform, and an oil pipe for connecting to an interface of the cylinder body being arranged on the testing platform;

[0007] A fixing frame for connecting the oil pipe is fixedly installed on the upper end of the testing platform, and a measuring mechanism is provided on the testing platform;

[0008] The measuring mechanism includes vertical plates relatively distributed on the test platform and a strip plate fixedly installed between the two vertical plates. The end of the strip plate close to the control machine is slidably connected to the first slider, and the end of the strip plate away from the control machine is slidably connected to the second slider. A scale is provided on the strip plate. A total of three workstations are provided on the test platform for synchronously testing the cylinder body. When the maximum distance of the piston needs to be tested during the test, the test results can be directly recorded by using the first slider, the second slider and the scale on the strip plate.

[0009] Preferably, a limiting column for plugging into the earring of the cylinder body shell is fixedly installed on the first sliding block.

[0010] Preferably, the lower end of the strip is symmetrically provided with a connecting plate corresponding to the piston earring of the cylinder body. The connecting plate and the piston earring of the cylinder body are movably connected through a pin rod. When the piston of the cylinder body moves, it will move synchronously with the second slider to facilitate the staff to record it. The installation is carried out in the form of plug-in connection of the second slider and the pin rod. Compared with the displacement sensor, the operation is more convenient and does not require a long time to accumulate experience, and it is faster to get started.

[0011] Preferably, a limiting rod for moving with the connecting plate is fixedly connected between the two vertical plates, and a sliding groove for matching with the limiting rod is provided on the connecting plate.

[0012] Preferably, a U-shaped groove is provided at the lower end of the strip, and a ball is movably provided on the second sliding block for adapting to the U-shaped groove.

[0013] Preferably, a positioning screw for positioning is threadedly inserted into the upper end of the second sliding block.

[0014] Preferably, inclined plates and oil leakage plates for supporting the cylinder body are equidistantly arranged on the upper end of the detection platform, and a limit block for limiting the position of the cylinder body is provided on the upper end of the oil leakage plate, and an oil leakage groove is provided at the end of the inclined plate away from the control machine.

[0015] The test device has three test stations on the upper end of the test table, which correspond to the three oil leakage plates and the limit blocks on the oil leakage plates respectively. During the test, the cylinder body is placed on the limit block, and the earring of the cylinder body shell is positioned by inserting the limit column, and the other end is inserted into the connecting plate and connected by the pin rod. After the oil is supplied through the oil pipe, the test is carried out. When the piston of the cylinder body moves, it will move synchronously with the connecting plate and the second slider above it along the strip. When it moves to the maximum distance, it can be recorded by aligning it with the scale on the strip. Compared with traditional displacement sensors, it is easy to disassemble and assemble, and can handle a large number of cylinder tests more efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a multi-station testing device for the pressure resistance and pressure holding effect of a finished oil cylinder;

[0017] Figure 2 It is a structural diagram of the oil leak plate;

[0018] Figure 3 Schematic diagram of the structure of the strip board;

[0019] Figure 4 Schematic diagram of the structure of the second slider.

[0020] In the picture:

[0021] 1. Control unit; 2. Test bench; 21. Limit block; 22. Oil leakage plate; 23. Inclined plate; 24. Oil leakage trough; 3. Fixed frame; 4. Oil pipe; 5. Cylinder body; 6. Measuring mechanism; 61. Vertical plate; 62. Strip plate; 63. First slider; 64. Limit column; 65. Second slider; 561. Ball bearing; 66. Connecting plate; 661. Slideway; 67. Positioning screw; 68. Pin; 69. Limit rod; 7. Scale. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] This embodiment provides a multi-station testing device for the pressure resistance and pressure holding effect of a finished oil cylinder. Figure 1-4 As shown, the test device includes a control machine 1 and a test platform 2 provided on one side of the control machine 1. A cylinder body 5 is provided on the upper end of the test platform 2. An oil pipe 4 for connecting to the interface of the cylinder body 5 is provided on the test platform 2.

[0024] A fixing frame 3 for connecting the oil pipe 4 is fixedly installed on the upper end of the test platform 2, and a measuring mechanism 6 is provided on the test platform 2;

[0025] The measuring mechanism 6 includes vertical plates 61 relatively distributed on the detection table 2 and a strip plate 62 fixedly installed between the two vertical plates 61. The end of the strip plate 62 close to the control machine 1 is slidably connected to the first slider 63, and the end of the strip plate 62 away from the control machine 1 is slidably connected to the second slider 65. A scale 7 is provided on the strip plate 62.

[0026] Specifically, the fixed frame 3 is a frame for placing the oil pipe 4, corresponding to the oil pipe 4 at three positions respectively, and is used to cope with the oil cylinder body 5 of different specifications and sizes. A total of three workstations are set on the test bench 2 for synchronously testing the oil cylinder body 5. When the maximum distance of the piston needs to be tested during the test, the test results can be directly recorded by using the first slider 63, the second slider 65 and the scale 7 on the strip 62.

[0027] A limiting column 64 for connecting with the outer shell earring of the cylinder body 5 is fixedly installed on the first slider 63. A connecting plate 66 corresponding to the piston earring of the cylinder body 5 is symmetrically arranged at the lower end of the strip 62. The connecting plate 66 and the piston earring of the cylinder body 5 are movably connected through a pin rod 68.

[0028] More specifically, the limiting column 64 on the first slider 63 corresponds to the earring of the outer shell of the cylinder body 5, and at the same time, the piston earring of the cylinder body 5 cooperates with the connecting plate 66 under the second slider 65 to keep the entire cylinder body 5 positioned and in the initial position. When the piston of the cylinder body 5 moves, it will move synchronously with the second slider 65 to facilitate the staff to record it. The second slider 65 and the pin rod 68 are installed in the form of plug-in connection. Compared with the displacement sensor, it is more convenient to operate, does not require a long time to accumulate experience, and is faster to get started.

[0029] A limiting rod 69 for moving with the connecting plate 66 is fixedly connected between the two vertical plates 61 , and a sliding groove 661 for matching with the limiting rod 69 is formed on the connecting plate 66 .

[0030] It should be noted that the limiting rod 69 mainly plays a role in stabilizing the movement of the second slider 65 and the connecting plate 66, preventing the second slider 65 from being offset when the piston of the cylinder body 5 moves with the connecting plate 66, thereby ensuring the accuracy of the detection.

[0031] A U-shaped groove is formed at the lower end of the strip 62 , and a ball 561 is movably provided on the second slider 65 for matching with the U-shaped groove. A positioning screw 67 for positioning is threadedly inserted at the upper end of the second slider 65 .

[0032] It is worth mentioning that the U-shaped groove at the lower end of the strip plate 62 and the ball 561 also play the role of reducing friction when the second slider 65 moves synchronously when the piston pushes.

[0033] Inclined plates 23 and an oil leakage plate 22 for supporting the cylinder body 5 are equidistantly arranged at the upper end of the detection platform 2. A limit block 21 for limiting the cylinder body 5 is provided at the upper end of the oil leakage plate 22. An oil leakage groove 24 is provided at the end of the inclined plate 23 away from the control machine 1.

[0034] Among them, the cylinder body 5 is placed on the limit block 21 on the oil leakage plate 22. If the cylinder body 5 has an airtightness problem and leaks oil, it will slide to the oil leakage groove 24 through the corresponding inclined plate 23, so that the staff can quickly find the cylinder body 5 leaking oil at multiple workstations.

[0035] When in use, first place the cylinder body 5 on the limit block 21 on the oil leakage plate 22, and connect the limit column 64 on the first slider 63 to the earring of the cylinder body 5 shell. At the same time, the piston earring of the cylinder body 5 cooperates with the connecting plate 66 under the second slider 65 to keep the entire cylinder body 5 in position and in the initial position. At this time, the oil pipe 4 is connected to the corresponding oil port of the cylinder body 5 respectively. After the cylinder piston movement detected on the control machine 1 is started, the piston will move synchronously with the second slider 65. After the second slider 65 moves to the maximum distance along the strip plate 62, the staff can directly observe the stop position of the second slider 65 and the scale 7 to directly record the maximum movement distance parameter of the piston.

[0036] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.

Claims

1. A multi-station testing device for the pressure resistance and pressure holding effect of a finished oil cylinder, comprising a control machine (1) and a testing platform (2) arranged on one side of the control machine (1), a cylinder body (5) being arranged at the upper end of the testing platform (2), and an oil pipe (4) for connecting to an interface of the cylinder body (5) being arranged on the testing platform (2); Its characteristics are: A fixing frame (3) for connecting the oil pipe (4) is fixedly mounted on the upper end of the detection platform (2), and a measuring mechanism (6) is provided on the detection platform (2); The measuring mechanism (6) comprises vertical plates (61) relatively distributed on the detection platform (2) and a strip plate (62) fixedly installed between the two vertical plates (61), wherein the end of the strip plate (62) close to the control machine (1) is slidably connected to a first slider (63), and the end of the strip plate (62) away from the control machine (1) is slidably connected to a second slider (65), and a scale (7) is provided on the strip plate (62).

2. The multi-station testing device for the pressure resistance and pressure holding effect of a finished oil cylinder according to claim 1, characterized in that: A limiting column (64) for plugging into the outer shell earring of the oil cylinder body (5) is fixedly mounted on the first sliding block (63).

3. The multi-station testing device for the pressure resistance and pressure holding effect of a finished oil cylinder according to claim 1, characterized in that: A connecting plate (66) corresponding to the piston earring of the oil cylinder body (5) is symmetrically arranged at the lower end of the strip plate (62), and the connecting plate (66) and the piston earring of the oil cylinder body (5) are movably plugged via a pin rod (68).

4. The multi-station testing device for the pressure resistance and pressure holding effect of a finished oil cylinder according to claim 3, characterized in that: A limiting rod (69) for moving with the connecting plate (66) is fixedly connected between the two vertical plates (61), and a sliding groove (661) for matching with the limiting rod (69) is provided on the connecting plate (66).

5. The multi-station testing device for the pressure resistance and pressure holding effect of a finished oil cylinder according to claim 4, characterized in that: A U-shaped groove is provided at the lower end of the strip plate (62), and a ball (561) adapted to fit the U-shaped groove is movably provided on the second sliding block (65).

6. The multi-station testing device for the pressure resistance and pressure holding effect of a finished oil cylinder according to claim 5, characterized in that: The upper end of the second sliding block (65) is threadedly connected with a positioning screw (67) for positioning.

7. The multi-station testing device for the pressure resistance and pressure holding effect of a finished oil cylinder according to claim 1, characterized in that: Inclined plates (23) and an oil leakage plate (22) for supporting the oil cylinder body (5) are equidistantly arranged on the upper end of the test platform (2). A limit block (21) for limiting the position of the oil cylinder body (5) is provided on the upper end of the oil leakage plate (22). An oil leakage groove (24) is provided on the end of the inclined plate (23) away from the control machine (1).

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