Thrust testing device based on gas pressure

Abstract

The utility model discloses a thrust testing device based on gas pressure, which relates to the technical field of thrust detection and is characterized in that a piston rod body of a pneumatic cylinder is provided with a displacement sensor for monitoring displacement data of a piston rod in real time, and the end part of the piston rod of the pneumatic cylinder is connected with the output end of a mechanism to be tested; a buffer gas cylinder which is communicated with a cylinder body and is used for filling gas is arranged at the tail part of the cylinder body of the pneumatic cylinder, and is provided with a pressure sensor which is used for monitoring the change of the gas pressure in the buffer gas cylinder in real time; one side of the pneumatic cylinder is provided with a control box which is in data connection with the displacement sensor and the pressure sensor and can calculate the thrust of the to-be-tested mechanism according to the received data; according to the utility model, the control of load thrust to be overcome in the movement process of different mechanisms is realized by controlling the gas pressure, so that not only is the thrust test of the to-be-tested mechanism met, but also the load thrust can be accurately controlled in the test process.

Description

Technical Field

[0001] The utility model relates to the technical field of thrust detection, in particular to a thrust testing device based on gas pressure. Background Art

[0002] In the automotive industry, energy, and other fields at home and abroad, in order to ensure that the production of equipment meets regulatory requirements, it is necessary to test the movement of various mechanisms within the equipment to overcome the load thrust. However, existing thrust testing devices often use servo motors, linear motors, etc. for thrust testing. However, these thrust testing devices are often complex in structure, and the operation during the thrust testing process is cumbersome and inconvenient, which seriously affects the efficiency and accuracy of the thrust testing. In addition, these thrust testing devices not only have high production and testing costs, but also high daily inspection and maintenance costs, which are not conducive to their widespread use. Utility Model Content

[0003] In order to overcome the deficiencies in the background technology, the present invention discloses a thrust testing device based on gas pressure. The present invention controls the load thrust that needs to be overcome during the movement of different mechanisms by controlling the gas pressure. This not only meets the thrust test of the mechanism to be tested, but also can accurately control the load thrust during the test.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A thrust testing device based on gas pressure includes a pneumatic cylinder that can freely expand and contract after being pressurized, a displacement sensor for real-time monitoring of piston rod displacement data is provided on the piston rod body of the pneumatic cylinder, the end of the piston rod of the pneumatic cylinder is connected to the output end of the mechanism to be tested, a buffer gas cylinder connected to the cylinder body and used for filling with air pressure is provided at the tail end of the cylinder body of the pneumatic cylinder, the buffer gas cylinder is provided with a pressure sensor for real-time monitoring of changes in air pressure in the buffer gas cylinder, and a control box is provided on one side of the pneumatic cylinder, which is data-connected to the displacement sensor and the pressure sensor and can calculate the thrust of the mechanism to be tested based on the received data.

[0006] Furthermore, it also includes a base plate for installing a support pneumatic cylinder and a buffer gas cylinder. A support plate perpendicular to the base plate is provided on the upper part of the base plate. The pneumatic cylinder is arranged on one side of the support plate and the tail of the cylinder body of the pneumatic cylinder is fixedly connected to the support plate. The buffer gas cylinder is arranged on the other side of the support plate.

[0007] Furthermore, a connecting pipe penetrating the support plate is provided between the buffer gas cylinder and the cylinder body of the pneumatic cylinder, and both ends of the connecting pipe are respectively connected to the cylinder body of the pneumatic cylinder and the buffer gas cylinder.

[0008] Furthermore, an end plate is provided on one end of the upper surface of the bottom plate close to the pneumatic cylinder, which is parallel to the support plate and is used to interfere with and limit the tail of the test mechanism.

[0009] Furthermore, a tail plate is provided at one end of the upper surface of the bottom plate close to the buffer gas cylinder, which is parallel to the support plate and is used to block and protect the buffer gas cylinder.

[0010] Compared with the prior art, the present invention has the following advantages: by providing a buffer gas cylinder, the load thrust that needs to be overcome when the tested mechanism moves can be controlled by filling the buffer gas cylinder with gas at a specified pressure;

[0011] By setting up displacement sensors, pressure sensors and control boxes, the function of recording and outputting displacement-time curves and thrust-time curves during the movement of the tested mechanism can be realized;

[0012] By connecting the buffer gas bottle to the cylinder body of the pneumatic cylinder, the load thrust can be precisely controlled by controlling the ratio of the volume of the buffer gas bottle to the volume change of the pressure chamber caused by the piston movement.

[0013] The utility model controls the load thrust that needs to be overcome during the movement of different mechanisms by controlling the gas pressure, which not only meets the thrust test of the test mechanism, but also can accurately control the load thrust during the test; the utility model has a simple structure, easy operation, low manufacturing and testing costs, and has a broad development space and application market. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] In the figure: 1. Mechanism to be tested; 2. Displacement sensor; 3. Pneumatic cylinder; 4. Control box; 5. Connecting pipe; 6. Buffer gas cylinder; 7. Pressure sensor; 8. End plate; 9. Bottom plate; 10. Support plate; 11. Tail plate. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", and "right" indicating directions or positional relationships, they only correspond to the drawings of the present invention and are for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction.

[0017] Please refer to the instruction manual Figure 1 , the utility model provides a technical solution:

[0018] Embodiment 1, a thrust testing device based on gas pressure, including a pneumatic cylinder 3 that can freely expand and contract after being pressurized, a displacement sensor 2 for real-time monitoring of piston rod displacement data is provided on the piston rod body of the pneumatic cylinder 3, the piston rod end of the pneumatic cylinder 3 is connected to the output end of the mechanism to be tested 1, a buffer gas cylinder 6 is provided at the rear end of the cylinder body of the pneumatic cylinder 3, which is connected to the cylinder body and used to fill with air pressure, and a pressure sensor 7 is provided on the buffer gas cylinder 6 for real-time monitoring of changes in air pressure in the buffer gas cylinder 6. A control box 4 is provided on one side of the pneumatic cylinder 3, which is data-connected to the displacement sensor 2 and the pressure sensor 7 and can calculate the thrust of the mechanism to be tested 1 based on the received data;

[0019] When performing a thrust test on the mechanism to be tested 1, the loading thrust F and the air pressure area A of the piston rod of the pneumatic cylinder 3 (the part connected to the cylinder body of the pneumatic cylinder 3) are used to calculate the inflation pressure P (F / A) of the buffer gas cylinder 6, and then the buffer gas cylinder 6 is inflated to the pressure P to ensure the load thrust to be overcome during the movement of the mechanism to be tested 1. The mechanism to be tested 1 is connected to the piston rod of the pneumatic cylinder 3. When the mechanism to be tested 1 moves, the piston rod of the pneumatic cylinder 3 is pushed to drive the displacement sensor 2 to move into the cylinder body of the pneumatic cylinder 3. The control box 4 records the movement process of the mechanism to be tested 1 (i.e., the movement process of the piston rod of the pneumatic cylinder 3) and outputs the time and displacement curve. The control box 4 also records the pressure in the buffer gas cylinder 6 monitored by the pressure sensor 7 and converts it into a fixed thrust F during the movement and synchronously outputs the thrust and time curve.

[0020] Embodiment 2, in order to ensure that the pneumatic cylinder 3 can firmly and stably withstand the thrust of the test mechanism 1 during the thrust test of the test mechanism 1, the support pneumatic cylinder 3 and the buffer gas cylinder 6 are both installed on the upper part of the base plate 9, and a support plate 10 perpendicular to the base plate 9 is provided on the upper part of the base plate 9. The pneumatic cylinder 3 is arranged on one side of the support plate 10, and the tail of the cylinder body of the pneumatic cylinder 3 is fixedly connected to the support plate 10. The buffer gas cylinder 6 is arranged on the other side of the support plate 10. A connecting pipe 5 that passes through the support plate 10 is provided between the buffer gas cylinder 6 and the cylinder body of the pneumatic cylinder 3, and the two ends of the connecting pipe 5 are respectively connected to the cylinder body of the pneumatic cylinder 3 and the buffer gas cylinder 6;

[0021] In order to ensure that the tested mechanism 1 is firm and stable during the thrust application process, an end plate 8 is provided at one end of the upper surface of the base plate 9 close to the pneumatic cylinder 3, which is parallel to the support plate 10 and is used to interfere with and limit the tail of the tested mechanism 1. In order to protect the buffer gas cylinder 6, a tail plate 11 is provided at one end of the upper surface of the base plate 9 close to the buffer gas cylinder 6, which is parallel to the support plate 10 and is used to block and protect the buffer gas cylinder 6.

[0022] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A thrust test device based on gas pressure, characterized in that: The invention comprises a pneumatic cylinder (3) capable of freely expanding and contracting after being pressurized, a displacement sensor (2) for real-time monitoring of piston rod displacement data is provided on the piston rod body of the pneumatic cylinder (3), the piston rod end of the pneumatic cylinder (3) is connected to the output end of the mechanism to be tested (1), a buffer gas cylinder (6) connected to the cylinder body and used for filling with gas pressure is provided at the rear end of the cylinder body of the pneumatic cylinder (3), a pressure sensor (7) for real-time monitoring of the change of gas pressure in the buffer gas cylinder (6) is provided on the buffer gas cylinder (6), and a control box (4) is provided on one side of the pneumatic cylinder (3) which is data-connected to the displacement sensor (2) and the pressure sensor (7) and can calculate the thrust of the mechanism to be tested (1) based on the received data.

2. The thrust testing device based on gas pressure according to claim 1, characterized in that: The invention also includes a base plate (9) for mounting a supporting pneumatic cylinder (3) and a buffer gas bottle (6); a supporting plate (10) perpendicular to the base plate (9) is provided on the upper portion of the base plate (9); the pneumatic cylinder (3) is arranged on one side of the supporting plate (10), and the tail of the cylinder body of the pneumatic cylinder (3) is fixedly connected to the supporting plate (10); and the buffer gas bottle (6) is arranged on the other side of the supporting plate (10).

3. The thrust testing device based on gas pressure according to claim 2, characterized in that: A connecting pipe (5) penetrating the support plate (10) is provided between the buffer gas bottle (6) and the cylinder body of the pneumatic cylinder (3), and the two ends of the connecting pipe (5) are respectively connected to the cylinder body of the pneumatic cylinder (3) and the buffer gas bottle (6).

4. The thrust testing device based on gas pressure according to claim 2, characterized in that: An end plate (8) is provided on the upper surface of the bottom plate (9) at one end close to the pneumatic cylinder (3), which is parallel to the support plate (10) and is used to abut and limit the tail of the test mechanism (1).

5. The thrust testing device based on gas pressure according to claim 2, characterized in that: A tail plate (11) is provided on one end of the upper surface of the bottom plate (9) close to the buffer gas cylinder (6), which is parallel to the support plate (10) and is used to block and protect the buffer gas cylinder (6).

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