Actuator cylinder tension and pressure testing device

Abstract

The utility model provides an actuator cylinder pull pressure test device, including work bench, stationary fixture and drive mechanism, there are a plurality of sets of stationary fixture, the circumference array is provided on the upper surface of work bench, stationary fixture includes upper clamping seat, lower clamping seat, guide rail, fixed plate and pressure sensor, the guide rail is provided on the surface of work bench, the fixed plate is fixed on the upper clamping seat, and the pressure sensor is fixed on the lower clamping seat. The lower clamping seat is slidably mounted in the guide rail; the head end and the tail end of the actuating cylinder are installed in the upper clamping base and the lower clamping base respectively, the motor drives the lead screw to rotate through the speed reducer and drives the lifting nut to move downwards, the lifting nut drives the lower clamping base in the guide rail to move towards the upper clamping base through the driving rod, and pressure testing is achieved. The driving rod drives the lower clamping seat in the guide rail to move towards the direction of the outer shell, tension testing is achieved, tension and pressure testing on the actuator cylinders can be achieved, meanwhile, the testing requirements of the multiple actuator cylinders can be met, and the testing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of tensile and compressive force testing equipment, and particularly relates to a tensile and compressive force testing device for an actuating cylinder. Background Art

[0002] As an important component in a hydraulic system, the performance of an actuating cylinder directly affects the operating efficiency and safety of the entire system. Therefore, it is very necessary to evaluate the pressure-bearing capacity, sealing performance, and motion characteristics of the actuating cylinder through tensile and compressive force tests. The pressure test is used to detect the working condition of the actuating cylinder under a certain pressure, which includes a pressure resistance test, that is, testing the performance of the actuating cylinder under the maximum working pressure, and a pressure holding test, that is, detecting the stability of the actuating cylinder under a certain pressure. Through these tests, it can be ensured that the actuating cylinder can still maintain a normal working state under extreme working conditions. Although it is usually called a "tensile and compressive force test", in actual applications, the actuating cylinder is more often subjected to pressure rather than tension. However, tensile tests are also necessary in certain specific situations. Traditional tensile and compressive force testing equipment can only meet the tensile and compressive force tests of a single actuating cylinder, and the detection efficiency is low. Content of the Utility Model

[0003] (I) Technical Problems to be Solved

[0004] In order to solve the above problems of the prior art, the utility model provides a tensile and compressive force testing device for an actuating cylinder.

[0005] (II) Technical Solutions

[0006] In order to achieve the above purpose, the main technical solutions adopted by the utility model include:

[0007] A tensile and compressive force testing device for an actuating cylinder, comprising a workbench, a fixed fixture, and a driving mechanism;

[0008] A plurality of groups of the fixed fixtures are provided and are arranged in a circumferential array on the upper surface of the workbench. The fixed fixture includes an upper clamp seat, a lower clamp seat, a guide rail, a fixing plate, and a pressure sensor;

[0009] The guide rail is arranged on the surface of the workbench;

[0010] The lower clamp seat is slidably installed in the guide rail;

[0011] The fixing plate is arranged on one side of the guide rail;

[0012] The upper clamp seat is connected to the fixing plate through a pressure sensor, and the actuating cylinder is installed between the upper clamp seat and the lower clamp seat;

[0013] The driving mechanism is arranged at the center of the surface of the workbench and is used to simultaneously move the lower clamp seats in multiple groups of the fixed fixtures towards or away from the upper clamp seats.

[0014] Preferably, the driving mechanism includes a motor, a speed reducer, a lead screw, an outer housing, a lifting nut, a connecting rod, and a driving rod;

[0015] The outer housing is a cylindrical housing with a sealed top and is fixed at the center of the upper surface of the workbench;

[0016] The lead screw is installed in the outer housing and is coaxially arranged with the outer housing;

[0017] The motor is connected to the lead screw through the speed reducer;

[0018] The lifting nut is threadedly connected to the lead screw;

[0019] A plurality of connecting rods are provided. The plurality of connecting rods are arranged at equal angular intervals along the outside of the lifting nut, and movable holes corresponding to the connecting rods are formed in the outer housing;

[0020] One end of the driving rod is rotatably connected to the connecting rod, and the other end of the driving rod is rotatably connected to the lower clamp seat of the corresponding fixed clamp.

[0021] Preferably, the upper clamp seat includes an E-shaped plate, a fixing rod, a handle, and a spring. Through holes are formed in the three transverse plates of the E-shaped plate, and an installation groove is formed between adjacent transverse plates. The fixing rod sequentially passes through the three through holes, and a handle is installed at one end of the fixing rod. A raised block is provided on the fixing rod, and the raised block is located in one of the installation grooves. The spring is sleeved on the fixing rod. One end of the spring is connected to the raised block, and the other end of the spring is connected to the inner wall of the installation groove. Pull the handle, and the end of the fixing rod disengages from the other installation groove.

[0022] Preferably, the lower clamp seat has the same structure as the upper clamp seat.

[0023] Preferably, the fixed clamp further includes a single-chip microcomputer and an alarm lamp. The pressure sensor and the alarm lamp are both electrically connected to the single-chip microcomputer.

[0024] (III) Beneficial effects

[0025] The beneficial effects of the present utility model are as follows: By adopting the above technical solution, the head and tail ends of the actuating cylinder are respectively installed in the upper clamp seat and the lower clamp seat. The motor drives the lead screw to rotate through the speed reducer, drives the lifting nut to move downward, and the lifting nut drives the lower clamp seat in the guide rail to move towards the upper clamp seat through the driving rod to achieve pressure testing. The motor drives the lead screw to reverse, drives the lifting nut to move upward, and the driving rod drives the lower clamp seat in the guide rail to move towards the outer housing to achieve tensile testing. This application can not only perform tensile and pressure testing on the actuating cylinder, but also meet the testing requirements of multiple actuating cylinders, improving the testing efficiency. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of a pulling and pressing force testing device for an actuator;

[0027] Figure 2 It is a schematic top view structural diagram of a pulling and pressing force testing device for an actuator;

[0028] Figure 3 It is a schematic front view structural diagram of a pulling and pressing force testing device for an actuator;

[0029] Figure 4 It is a schematic structural diagram of the upper clamping seat.

[0030]

Description of the Reference Numerals

[0031] 1. Workbench;

[0032] 2. Fixed fixture;

[0033] 21. Fixed plate; 22. Upper clamping seat; 221. E-shaped plate; 222. Fixed rod; 223. Handle; 224. Protruding block; 225. Spring; 23. Lower clamping seat; 24. Guide rail; 25. Alarm lamp; 26. Pressure sensor;

[0034] 3. Driving mechanism;

[0035] 31. Motor; 32. Reducer; 33. Outer housing; 34. Lead screw; 35. Lifting nut; 36. Connecting rod; 37. Driving rod. Detailed Embodiment

[0036] For better explaining the present invention and facilitating understanding, the present invention will be described in detail below in conjunction with the drawings through specific embodiments.

[0037] Please refer to Figures 1 to 4 , the present invention provides a pulling and pressing force testing device for an actuator, including a workbench 1, a fixed fixture 2 and a driving mechanism 3;

[0038] A plurality of groups of fixed fixtures 2 are provided, which are circumferentially and arrayedly arranged on the upper surface of the workbench 1. The fixed fixture 2 includes an upper clamping seat 22, a lower clamping seat 23, a guide rail 24, a fixed plate 21 and a pressure sensor 26;

[0039] The guide rail 24 is arranged on the surface of the workbench 1;

[0040] The lower clamping seat 23 is slidably installed in the guide rail 24;

[0041] The fixed plate 21 is arranged on one side of the guide rail 24;

[0042] The upper clamping seat 22 is connected to the fixed plate 21 through a pressure sensor 26, and the actuator cylinder is installed between the upper clamping seat 22 and the lower clamping seat 23;

[0043] The driving mechanism 3 is arranged at the center of the surface of the workbench 1 and is used to simultaneously move the lower clamping seats 23 in multiple sets of fixed fixtures 2 towards or away from the upper clamping seat 22.

[0044] Among them, the driving mechanism 3 includes a motor 31, a speed reducer 32, a lead screw 34, a housing 33, a lifting nut 35, a connecting rod 36, and a driving rod 37;

[0045] The housing 33 is a cylindrical housing with a sealed top and is fixed at the center of the upper surface of the workbench 1;

[0046] The lead screw 34 is installed inside the housing 33 and is coaxially arranged with the housing 33;

[0047] The motor 31 is connected to the lead screw 34 through the speed reducer 32;

[0048] The lifting nut 35 is threadedly connected to the lead screw 34;

[0049] A plurality of connecting rods 36 are provided. The plurality of connecting rods 36 are arranged at equal angular intervals along the outside of the lifting nut 35, and the housing 33 is provided with movable holes corresponding to the connecting rods 36;

[0050] One end of the driving rod 37 is rotatably connected to the connecting rod 36, and the other end of the driving rod 37 is rotatably connected to the lower clamping seat 23 of the corresponding fixed fixture 2;

[0051] During use, the head and tail ends of the actuator cylinder are respectively installed in the upper clamping seat 22 and the lower clamping seat 23. The motor 31 drives the lead screw 34 to rotate through the speed reducer 32, driving the lifting nut 35 to move downward. The lifting nut 35 drives the lower clamping seat 23 in the guide rail 24 to move towards the upper clamping seat 22 through the driving rod 37 to achieve a pressure test. The motor 31 drives the lead screw 34 to reverse, driving the lifting nut 35 to move upward, and the driving rod 37 drives the lower clamping seat 23 in the guide rail 24 to move towards the housing 33 to achieve a tensile test. This application can not only perform tensile and pressure tests on the actuator cylinder, but also meet the test requirements of multiple actuator cylinders, improving the test efficiency.

[0052] In this embodiment, the upper clamping seat 22 includes an E-shaped plate 221, a fixing rod 222, a handle 223 and a spring 225. Perforations are formed on the three transverse plates of the E-shaped plate 221, and the adjacent transverse plates form an installation groove. The fixing rod 222 passes through the three perforations in sequence, and a handle 223 is installed at one end of the fixing rod 222. A raised block 224 is arranged on the fixing rod 222, and the raised block 224 is located in one of the installation grooves. The spring 225 is sleeved on the fixing rod 222. One end of the spring 225 is connected to the raised block 224, and the other end of the spring 225 is connected to the inner wall of the installation groove. Pull the handle 223, and the end of the fixing rod 222 disengages from the other installation groove;

[0053] During use, manually pull the handle 223 to make the end of the fixing rod 222 disengage from one of the installation grooves. Place the end of the actuating cylinder into the installation groove, release the handle 223, and under the action of the spring 225, the fixing rod 222 resets and enters the perforation of the installation groove, locking the actuating cylinder in the installation groove. Similarly, when removing the tested actuating cylinder, only need to manually pull the handle 223, and the fixing rod 222 disengages from the actuating cylinder, realizing the quick disassembly of the actuating cylinder.

[0054] In this embodiment, the structure of the lower clamping seat 23 is the same as that of the upper clamping seat 22.

[0055] In this embodiment, the fixed fixture 2 further includes a single-chip microcomputer and an alarm lamp 25. The pressure sensor 26 and the alarm lamp 25 are both electrically connected to the single-chip microcomputer. The test data of the pressure test or the tensile test of the actuating cylinder is obtained through the pressure sensor 26. When the test value is not within the threshold range, the alarm lamp 25 lights up, indicating that there is a problem with the actuating cylinder, and defective products can be quickly detected.

[0056] The working principle of the present utility model is as follows:

[0057] Install the head and tail ends of the actuating cylinder in the upper clamping seat 22 and the lower clamping seat 23 respectively. The motor 31 drives the lead screw 34 to rotate through the speed reducer 32, driving the lifting nut 35 to move downward. The lifting nut 35 drives the lower clamping seat 23 in the guide rail 24 to move towards the upper clamping seat 22 through the driving rod 37, realizing the pressure test. The motor 31 drives the lead screw 34 to rotate in reverse, driving the lifting nut 35 to move upward, and the driving rod 37 drives the lower clamping seat 23 in the guide rail 24 to move towards the outer housing 33, realizing the tensile test. This application can not only perform tensile and pressure tests on the actuating cylinder, but also meet the test requirements of multiple actuating cylinders, improving the test efficiency.

[0058] The circuits, electronic components and modules involved are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve improvements to software and methods either.

[0059] The above are only the embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. All equivalent transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the relevant technical fields, are equally included in the patent protection scope of the present utility model.

[0060] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An actuating cylinder tensile and compressive force testing device, characterized in that, It includes a workbench, a fixed fixture, and a driving mechanism; Multiple groups of the fixed fixtures are provided, which are arranged in a circumferential array on the upper surface of the workbench. The fixed fixture includes an upper clamping seat, a lower clamping seat, a guide rail, a fixing plate, and a pressure sensor; The guide rail is arranged on the surface of the workbench; The lower clamping seat is slidably installed in the guide rail; The fixing plate is arranged on one side of the guide rail; The upper clamping seat is connected to the fixing plate through the pressure sensor, and an actuating cylinder is installed between the upper clamping seat and the lower clamping seat; The driving mechanism is arranged at the center of the surface of the workbench, and is used to simultaneously move the lower clamping seats in multiple groups of the fixed fixtures towards or away from the upper clamping seats.

2. The actuating cylinder tensile and compressive force testing device according to claim 1, wherein The driving mechanism includes a motor, a speed reducer, a lead screw, a housing, a lifting nut, a connecting rod, and a driving rod; The housing is a cylindrical housing with a sealed top, and is fixed at the center of the upper surface of the workbench; The lead screw is installed in the housing and is coaxially arranged with the housing; The motor is connected to the lead screw through the speed reducer; The lifting nut is threadedly connected to the lead screw; A plurality of connecting rods are provided. The plurality of connecting rods are arranged at equal angular intervals along the outside of the lifting nut, and the housing is provided with moving holes corresponding to the connecting rods; One end of the driving rod is rotatably connected to the connecting rod, and the other end of the driving rod is rotatably connected to the lower clamping seat of the corresponding fixed fixture.

3. The actuating cylinder tensile and compressive force testing device according to claim 1, wherein, The upper clamping seat includes an E-shaped plate, a fixing rod, a handle, and a spring. Perforations are provided on all three cross plates of the E-shaped plate, and an installation groove is formed between adjacent cross plates. The fixing rod sequentially passes through the three perforations, and a handle is installed at one end of the fixing rod. A raised block is arranged on the fixing rod, and the raised block is located in one of the installation grooves. The spring is sleeved on the fixing rod. One end of the spring is connected to the raised block, and the other end of the spring is connected to the inner wall of the installation groove. Pull the handle, and the end of the fixing rod disengages from the other installation groove.

4. The actuating cylinder tensile and compressive force testing device according to claim 3, characterized in that, The structure of the lower clamping seat is the same as that of the upper clamping seat.

5. The actuating cylinder tensile and compressive force testing device according to claim 1, wherein, The fixed fixture further includes a single-chip microcomputer and an alarm lamp. The pressure sensor and the alarm lamp are both electrically connected to the single-chip microcomputer.

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