Thrust rod change-following test equipment

Abstract

An upper top plate of the equipment is linked with an air cylinder through a first guide column, and is matched with an air path module to realize dynamic closed-loop pressure control; the lower top plate and the height adjusting module form an adjustable installation space through the second guide column, and the adjustable installation space is matched with thrust rods of different sizes. Compared with traditional equipment, the scheme replaces manual replacement of a bearing block through automatic pneumatic adjustment, the test efficiency is improved, meanwhile, high pressure control precision is achieved, and the continuously-changing pre-pressure working condition can be simulated; the base frame is integrated with the height adjusting module, so that the height adjusting stability is enhanced, the equipment compatible stroke range is greatly expanded, and multi-scene testing requirements of workshops and laboratories are met.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and particularly relates to a thrust rod variable test equipment. Background Art

[0002] Traditional thrust rod thrust detection equipment (such as the comparative document CN218002767U) mostly uses fixed load blocks, and simulates the load by stacking load blocks of different masses. However, this method has the following defects: (1) It is necessary to frequently disassemble / replace the load blocks to adapt to different thrust levels. The test operation for different pre-pressures is cumbersome and time-consuming, with low efficiency; (2) The fixed load is a set discrete value, and dynamic pressure adjustment cannot be achieved, making it difficult to simulate the continuous change of actual working conditions; (3) The height of the bottom plate is fixed, and it cannot be adapted to electric push rods with different strokes or installation dimensions, resulting in insufficient equipment compatibility; (4) The application of the load and the data acquisition and analysis rely on manual intervention, which is prone to introducing human errors.

[0003] Therefore, there is an urgent need to develop a new type, efficient, and load-dynamically adjustable thrust rod variable test equipment. Summary of the Invention

[0004] In order to overcome the above defects of the electric push rod thrust detection equipment, the present invention provides a thrust rod variable test equipment.

[0005] The technical solution adopted by the present invention is as follows: A thrust rod variable test equipment, characterized in that it includes: a base frame; an upper top plate, which is slidably installed in the base frame along the vertical direction through a first guide post, and has an upper connecting ear on its lower surface; a lower top plate, which is installed in the base frame, and has a lower connecting ear on its upper surface, forming an installation space for the thrust rod with the upper connecting ear; A cylinder, acting on the upper top plate; an air circuit module, providing a stable air source for the cylinder control, so that the cylinder provides a constant pressure or tensile force for the upper top plate.

[0006] Preferably, the air circuit module includes an air storage tank, a proportional control valve, a pressure sensor, and a PID controller; the proportional control valve is arranged in the connecting pipeline between the air storage tank and the cylinder; the pressure sensor real-time detects the air pressure in the cylinder and feeds back the signal to the PID controller; the PID controller maintains the constancy of the cylinder output pressure by adjusting the opening of the proportional control valve.

[0007] Preferably, the lower top plate is slidably installed in the base frame along the vertical direction through a second guide post, and the lower top plate is configured with a height adjustment module.

[0008] Preferably, the height adjustment module adopts a motor-driven worm and worm gear mechanism.

[0009] Preferably, a base frame is further included, which is arranged in the lower space inside the base frame, and the first guide column, the second guide column and the height adjustment module are all installed on the base frame.

[0010] Preferably, a column is provided in the middle portion of the base frame corresponding to the height adjustment module.

[0011] Preferably, lockable castors are arranged at the bottom of the base frame.

[0012] The present invention has the following beneficial effects: 1. Improved efficiency of automated testing: The traditional manual replacement of load-bearing blocks is eliminated, and the pressure is automatically adjusted through the gas path module, which shortens the single test cycle and eliminates human operation errors; 2. Dynamic pressure control: Through the coordinated action of the proportional control valve and the PID controller in the gas circuit module, the cylinder output pressure can be adjusted and maintained in real time, solving the problem that the fixed load of traditional equipment cannot simulate the continuous change of pre-pressure; 3. Height adjustable and highly adaptable: The lower top plate can slide vertically through the second guide column and the worm gear mechanism. Combined with the column structure of the base frame, it can adapt to thrust rods with different strokes or installation sizes to improve compatibility; 4. Balance between mobility and stability: The locking casters at the bottom of the base frame support rapid transfer of the equipment. After locking, the stability meets the requirements of high-precision thrust testing and is suitable for multiple scenarios in workshops and laboratories. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the present invention.

[0014] Figure 2 1 is a front view schematic diagram of an embodiment of the present invention (the cover plate of the base frame is hidden).

[0015] Figure 3 Schematic diagram of the principle of the gas path module 8 in the embodiment of the present invention.

[0016] Base frame 1; Upper top plate 2; A first guide column 3; Upper connecting ear 4; Lower top plate 5; Lower connecting ear 6; Cylinder 7; Gas circuit module 8, gas storage tank 801, proportional control valve 802, pressure sensor 803, PID controller 804; A second guide column 9; Height adjustment module 10; Base frame 11; Column 12; Locking caster 13. Detailed implementation manners

[0017] The present invention will be further described below in conjunction with embodiments and the accompanying drawings.

[0018] In the embodiment, as Figures 1 - 3 shown, there is a thrust rod variable test device, including: a base frame 1; an upper top plate 2, which is slidably installed in the base frame 1 along the vertical direction through a first guide post 3, and an upper connecting ear 4 is arranged on the lower surface; a lower top plate 5, which is installed in the base frame 1, and a lower connecting ear 6 is arranged on the upper surface, forming an installation space for the thrust rod with the upper connecting ear 4; a cylinder 7, acting on the upper top plate 2; an air circuit module 8, providing a stable air source for controlling the cylinder 7, so that the cylinder 7 provides a constant pressure or tensile force for the upper top plate 2. In this embodiment, the cylinder 7 is combined with the air circuit module 8 to replace the traditional load-bearing block, realizing the automation of thrust testing and dynamic pressure regulation, improving the testing efficiency, shortening the single test cycle, and eliminating human operation errors at the same time; meanwhile, it has high pressure control accuracy, can simulate continuously changing pre-pressure conditions, and significantly improves the testing continuity; in addition, it can also cover the two-way stress scenarios of the thrust rod.

[0019] In the embodiment, as Figure 3 shown, the air circuit module 8 includes an air storage tank 801, a proportional control valve 802, a pressure sensor 803 and a PID controller 804; the proportional control valve 802 is arranged in the connecting pipeline between the air storage tank 801 and the cylinder 7; the pressure sensor 803 detects the air pressure in the cylinder 7 in real time and feeds the signal back to the PID controller 804; the PID controller 804 maintains the constancy of the output pressure of the cylinder 7 by adjusting the opening of the proportional control valve 802. In this embodiment, a closed-loop pressure control system is constructed, and the PID controller 804 and the proportional valve 802 are linked to achieve a pressure fluctuation control of ±1%. The system can compensate for air pressure fluctuations in real time to ensure the stability of test data. Compared with the traditional open-loop control, the pressure control accuracy is greatly improved.

[0020] In the embodiment, as Figure 1 、 Figure 2 shown, the lower top plate 5 is slidably installed in the base frame 1 along the vertical direction through a second guide post 9, and the lower top plate 5 is configured with a height adjustment module 10. The height adjustment module 10 enables the device to be compatible with thrust rods with a stroke of 50 - 300 mm and even larger, improving the compatibility and being applicable to multiple scenarios in workshops and laboratories. Moreover, the vertical movement accuracy of the lower top plate 5 is ensured through the second guide post 9 and the linear bearing, avoiding the off-load problem caused by methods such as manual shim adjustment.

[0021] In the embodiment, as Figure 1 、 Figure 2As shown, the height adjustment module 10 adopts a motor-driven worm and worm gear mechanism. The worm and worm gear mechanism provides a large reduction ratio, achieves a fine adjustment accuracy of 0.1 mm level, and can accurately match the pre-compression amount. In addition, the worm and worm gear mechanism also has a self-locking characteristic, which improves the stability of the lower top plate 5 in the vertical direction.

[0022] In the embodiment, as Figure 1 , Figure 2 shown, it further includes a base frame 11, which is arranged in the lower space inside the base frame 1. The first guide post 3, the second guide post 9 and the height adjustment module 10 are all installed on the base frame 11. A column 12 is provided at the middle part of the base frame 11 corresponding to the height adjustment module 10. The structure of the column 12 improves the stiffness of the base frame, can withstand heavy dynamic loads, has a large rigidity in the vertical direction, and has a small deformation, adapting to different test modes such as tension and compression.

[0023] In the embodiment, as Figure 1 , Figure 2 shown, locking casters 13 are arranged at the bottom of the base frame 1. The locking casters 13 support the rapid transfer of the equipment. After being locked, the stability meets the requirements of high-precision thrust tests and is applicable to multiple scenarios in workshops and laboratories.

[0024] Obviously, the above embodiments of the present invention are merely examples for illustrating the present invention, rather than limiting the implementation manners of the present invention. Other obvious changes or variations derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. A thrust rod variable test device, characterized in that: include: Base frame (1); An upper top plate (2) is slidably mounted in the base frame (1) along a vertical direction via a first guide column (3), and an upper connecting ear (4) is provided on the lower surface; A lower top plate (5) is installed in the base frame (1), and a lower connecting ear (6) is provided on the upper surface thereof, which forms an installation space for the thrust rod together with the upper connecting ear (4); A cylinder (7) acting on the upper top plate (2); The air circuit module (8) controls a stable air source for the air cylinder (7), so that the air cylinder (7) provides a constant pressure or tension for the upper top plate (2).

2. The thrust rod variable test device according to claim 1, characterized in that: The gas circuit module (8) comprises a gas storage tank (801), a proportional control valve (802), a pressure sensor (803) and a PID controller (804); the proportional control valve (802) is arranged in a connecting pipeline between the gas storage tank (801) and the gas cylinder (7); the pressure sensor (803) detects the gas pressure in the gas cylinder (7) in real time and feeds back a signal to the PID controller (804); the PID controller (804) maintains a constant output pressure of the gas cylinder (7) by adjusting the opening of the proportional control valve (802).

3. The thrust rod variable testing device according to claim 1, characterized in that: The lower top plate (5) is slidably mounted in the base frame (1) along a vertical direction via a second guide column (9), and the lower top plate (5) is provided with a height adjustment module (10).

4. The thrust rod variable test device according to claim 3, characterized in that: The height adjustment module (10) adopts a worm gear mechanism driven by a motor.

5. The thrust rod variable testing device according to claim 3, characterized in that: It also includes a base frame (11) disposed in the lower space inside the base frame (1), and the first guide column (3), the second guide column (9) and the height adjustment module (10) are all mounted on the base frame (11).

6. The thrust rod variable testing device according to claim 5, characterized in that: A column (12) is provided in the middle portion of the base frame (11) corresponding to the height adjustment module (10).

7. The thrust rod variable testing device according to claim 1, characterized in that: Lockable castors (13) are arranged at the bottom of the base frame (1).

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