Analog device for compressed air pressure control valve

Abstract

The utility model discloses a kind of simulation devices of compressed air pressure control valve, belong to valve technical field, to solve the action signal of mechanical pressure regulating valve cannot be directly collected in prior art and cannot simulate pressure regulating valve action problem.The device provided by the utility model includes: valve body, fixed installation, hollow inside for cylindrical;Shell, hollow cylinder with bottom open, top and side closed, the bottom of shell is sleeved on the top outside of valve body;Rotary telescopic component is installed in shell, rotary telescopic component can rotate along the axis of shell, and in the rotation process, the length of telescopic itself in the axis direction of shell;Potentiometer is installed in the bottom of valve body, and the resistance value adjusting end of potentiometer is connected with rotary telescopic component.The utility model is combined by mechanical rotary telescopic structure and potentiometer, simulates the position of pressure regulating valve and is converted into standard electric signal output, and can be used to simulate compressed air pressure control valve.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a simulation device for a compressed air pressure control valve used in large road maintenance machinery. Background Technology

[0002] The air brake of a railway vehicle is a device that uses compressed air to brake and release trains, and it is an important component of the train braking system. The pressure regulating valve is one of the key components of the air brake; its function is to control the compressed air pressure using a mechanical structure.

[0003] In the field of railway vehicle simulation technology, for example, to train railway vehicle operators, it is often necessary to develop various railway vehicle simulation systems. Since pressure regulating valves are extremely common components on railway vehicles, it is usually necessary to implement the simulation function of train air braking in railway vehicle simulation systems. However, existing pressure regulating valves are mechanical structures, and simulation systems cannot directly collect the action signals of the pressure regulating valve body. Therefore, it is not convenient to simulate various working states or faults of the pressure regulating valve in the simulation system, and it is impossible to realize the action simulation of train braking based on the pressure regulating valve. Furthermore, even if the working state of the pressure regulating valve is simulated in the simulation scenario, without an actual pressurized air source, the user of the simulation system lacks the damping feel when operating the simulated pressure regulating valve, and cannot experience the immersive feeling of operating a railway vehicle on-site.

[0004] In summary, it is necessary to improve the existing pressure regulating valves of railway vehicles in order to collect the action signals of the pressure regulating valves and realize the simulation of the action of the pressure regulating valves. Utility Model Content

[0005] In view of this, the present invention provides a simulation device for a compressed air pressure control valve to solve the problem that existing railway vehicle simulation systems cannot directly collect the action signal of a mechanical pressure regulating valve, thus failing to simulate the action of air braking of the pressure regulating valve.

[0006] This utility model embodiment provides a simulation device for a compressed air pressure control valve, comprising: The valve body, which is fixedly installed, is cylindrical and hollow inside; The housing is a hollow cylinder with an open bottom and closed top and sides; the bottom of the housing fits over the top of the valve body. A rotary telescopic assembly is installed inside the housing; this assembly can rotate along the axis of the housing and extends or retracts its length along the axial direction of the housing during rotation. A potentiometer is installed at the bottom of the valve body, and the resistance adjustment terminal of the potentiometer is connected to the rotary telescopic assembly.

[0007] In some embodiments, the rotary telescopic assembly includes: The T-shaped part is located on the inner top of the housing, and its vertical end is a threaded rod; A nut, which is installed on the top of the threaded rod of the T-shaped member; and A spring, which is fitted onto the threaded rod of the T-shaped piece, is located between the nut and the valve body; The potentiometer is a rotary potentiometer, which has a connecting rod for adjusting the resistance value by rotation. The connecting rod passes vertically upward through the valve body and connects to the bottom end of the threaded rod of the T-shaped component.

[0008] In some embodiments, a limiting block for limiting the stroke of the nut is mounted on the threaded rod of the T-shaped member.

[0009] In some embodiments, the rotary telescopic assembly further includes: An end cap, the top surface of which is fixedly connected to the lower top side of the housing, is located on the upper side of the T-shaped member, and the horizontal end of the T-shaped member is fixedly connected to the bottom of the end cap; the end cap can rotate around the axis of the housing.

[0010] In some embodiments, the rotary telescopic assembly further includes: The valve wall is a hollow cylinder with a preset wall thickness, installed inside the housing and coaxial with the housing, located between the T-shaped component and the valve body; there is a preset distance between the top surface of the valve wall and the bottom surface of the horizontal end of the T-shaped component.

[0011] In some embodiments, the threaded rod of the T-shaped component has a connecting bayonet at its bottom, and the connecting rod of the potentiometer is connected to the threaded rod of the T-shaped component through the connecting bayonet.

[0012] In some embodiments, a support member is mounted on the top of the valve body for supporting and limiting the spring.

[0013] In some embodiments, the simulation device further includes a threaded cap; the bottom of the valve body is threaded, and the threaded cap is installed on the bottom of the valve body; the rotary potentiometer is connected to the bottom of the threaded cap; the connecting rod passes vertically upward through the threaded cap and the valve body in sequence, and then connects to the bottom end of the threaded rod of the T-shaped piece.

[0014] This invention simulates the mechanical pressure regulating action of a compressed air pressure control valve using a rotary telescopic component. The component drives the potentiometer's resistance adjustment terminal, thereby adjusting the potentiometer's resistance. By collecting the potentiometer's output electrical signal, the operation of the rotary telescopic component can be determined through changes in the signal. The combination of the mechanical rotary telescopic structure and the potentiometer, particularly through the use of an angle sensor to acquire the rotation angle value, simulates the valve's position and converts it into a standard electrical signal. This solves the problem of existing railway vehicle simulation systems being unable to directly collect the action signals of mechanical pressure regulating valves, enabling the acquisition of signals required by the simulation platform. Furthermore, the use of spring resistance and limit blocks replicates the damping feel, simulating the operating feel and stroke range of a real pressure regulating valve, enhancing the immersion and realism of the simulation platform training. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A cross-sectional view of a simulation device for a compressed air pressure control valve provided by this utility model; Figure label: 1. End cap; 2. Nut; 3. T-shaped part; 4. Valve wall; 5. Limiting block; 6. Spring; 7. Connecting bayonet; 8. Support; 9. Connecting rod; 10. Valve body; 11. Threaded cap; 12. Potentiometer; 13. Terminal block; 14. Housing. Detailed Implementation

[0017] The following is a detailed description of a simulation device for a compressed air pressure control valve according to an embodiment of the present invention, with reference to the accompanying drawings.

[0018] It should be understood that the described embodiments are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] Figure 1 A cross-sectional view of a simulation device for a compressed air pressure control valve provided for an embodiment of this utility model, as shown below. Figure 1 As shown, the simulation device includes: Valve body 10, which is fixedly installed, is cylindrical and hollow inside; The housing 14 is a hollow cylinder with an open bottom and closed top and sides. The bottom of the housing 14 is fitted onto the outside of the top of the valve body 10. A rotary telescopic assembly is installed inside the housing 14. The rotary telescopic assembly can rotate along the axis of the housing 14 and extend and retract its length in the axial direction of the housing 14 during the rotation. Potentiometer 12 is installed at the bottom of valve body 10, and the resistance adjustment terminal of potentiometer 12 is connected to the rotary telescopic assembly.

[0020] This invention simulates the mechanical pressure regulating action of a compressed air pressure control valve using a rotary telescopic assembly. The assembly also drives the potentiometer's resistance adjustment terminal, thereby adjusting the potentiometer's resistance. By collecting the electrical signal output from the potentiometer, the movement of the rotary telescopic assembly can be determined through changes in the output signal. The combination of the mechanical rotary telescopic structure and the potentiometer simulates the position of the compressed air pressure control valve (pressure regulating valve) and converts it into a standard electrical signal. This solves the problem that existing railway vehicle simulation systems cannot directly collect the action signals of mechanical compressed air pressure control valves, enabling the acquisition of signals required by the simulation platform.

[0021] In some preferred embodiments, such as Figure 1 As shown, the rotary telescopic assembly of this utility model includes: T-shaped part 3 is located on the inner top of housing 14, and its vertical end is a threaded rod; Nut 2, which is installed on the top of the threaded rod of T-shaped part 3; Spring 6 is fitted onto the threaded rod of T-shaped part 3 and is located between nut 2 and valve body 10; Among them, potentiometer 12 is a rotary potentiometer, which has a connecting rod 9 for adjusting the resistance value by rotation. The connecting rod 9 passes vertically upward through the valve body 10 and is connected to the bottom end of the threaded rod of the T-shaped part 3.

[0022] In these embodiments, when the T-shaped part 3 rotates, its threaded rod rotates. Since the valve body 10 is fixed, it will not rotate with the T-shaped part. Under the rotation of the threaded rod, the nut 2 moves up and down. During the up and down movement of the nut 2, since the spring 6 is limited by the valve body 10 below it, the compression generated during the up and down movement of the nut 2 generates elastic force. The elastic force simulates the rotational damping feel of the existing pressure regulating valve.

[0023] In some embodiments, such as Figure 1As shown, a limiting block 5 is installed on the threaded rod of the T-shaped part 3 to limit the stroke of the nut 2. That is, the stroke of the nut 2 that can move up and down is limited to the position between the bottom of the T-shaped part 3 and the limiting block 5. At the same time, since the spring 6 is compressed, it will generate elastic force on the nut 2. The stroke of the nut 2 is limited by the limiting block 5 and the spring 6. The number of rotations of the T-shaped part 3 is limited, thereby simulating the adjustment range of the pressure regulating valve.

[0024] Preferably, such as Figure 1 As shown, the rotating telescopic assembly also includes an end cap 1, the top surface of which is fixedly connected to the lower top of the housing 14, or the end cap 1 and the housing 14 can be integrally formed; the end cap 1 is located on the upper side of the T-shaped member 3, and the horizontal end of the T-shaped member 3 is fixedly connected to the bottom of the end cap 1; the end cap 1 can rotate around the axis of the housing 14. Obviously, since the T-shaped member 3 is fixedly connected to the end cap 1, and the end cap 1 is fixedly connected to the housing 14, the end cap 1 and the T-shaped member 3 can rotate together with the housing 14 around the axis of the housing 14. The housing 14 can be provided with a handle for the operator to hold and rotate, for example. When the housing 14 is rotated, the end cap 1 and the T-shaped member 3 can be rotated together by the housing 14, further facilitating operation.

[0025] In some embodiments, the rotary telescopic assembly further includes a valve wall 4, which is a hollow cylinder with a preset wall thickness, installed inside the housing 14 and coaxial with the housing 14, located between the T-shaped member 3 and the valve body 10; there is a preset distance between the top surface of the valve wall 4 and the bottom surface of the horizontal end of the T-shaped member 3.

[0026] In some embodiments, such as Figure 1 As shown, the bottom of the threaded rod of the T-shaped part 3 has a connecting slot 7 that is adapted to the top size of the connecting rod 9 of the potentiometer 12. The top of the connecting rod 9 of the potentiometer 12 is connected to the threaded rod of the T-shaped part 3 through the connecting slot 7. The T-shaped part 3 connects to the rotating component of the angle sensor of the rotary potentiometer 12 through the connecting slot 7. This connection method is convenient for disassembly and assembly, and the simulation is direct, enabling the signal to respond quickly to the voltage regulation simulation action.

[0027] Preferably, such as Figure 1 As shown, a support member 8 is installed on the top of the valve body 10 to support and limit the spring 6, thereby limiting the spring 6 support member during the up and down movement of the nut, and accurately calibrating the pressure regulating valve action stroke simulated by the simulated pressure regulating device according to the simulated stroke.

[0028] In some embodiments, such as Figure 1As shown, the simulation device provided by this utility model also includes a threaded cover 11; the bottom of the valve body 10 is provided with threads, and the threaded cover 11 is threadedly connected to the bottom of the valve body 10; a rotary potentiometer is connected to the bottom of the threaded cover 11; the connecting rod 9 passes vertically upward through the threaded cover 11 and the valve body 10 in sequence, and is connected to the bottom end of the threaded rod of the T-shaped part 3. In these embodiments, the body of the potentiometer 12 is fixed to the bottom of the threaded cover 11, and the angle signal generated by the angle sensor when the connecting rod of the potentiometer 12 rotates realizes the acquisition of the action signal of the pressure regulating valve.

[0029] The operating steps and working principle of the simulation device for the compressed air pressure control valve provided by this utility model are as follows: Step 1: Rotate the housing 14 to drive the end cover 1, and the end cover 1 drives the T-shaped part 2 and the threaded rod to rotate; Step 2: Since the position of nut 2 is restricted from rotation, nut 2 moves up and down under the action of the rotation of the threaded rod; Step 3: During the up-and-down movement of nut 2, spring 6 is limited by support 8, so nut 2 generates compression and elastic force during the up-and-down movement. The elastic force simulates the rotational damping feel of the original pressure regulating valve. Step 4: The stroke of nut 2 is limited by limit block 5 and spring 6, and the number of rotations of end cap 1 is limited, simulating the adjustment range of pressure regulating valve.

[0030] Step 5: The T-shaped part 3 connects to the rotating part of the angle sensor of the potentiometer 12 through the connecting bayonet 7, and the rotating part of the sensor rotates with the connecting rod.

[0031] Step 6: The valve body 10 is fixedly installed and will not rotate with the T-shaped part 3; Step 7: At the same time, the potentiometer 12 body is fixed to the threaded cap 11 at the bottom. When the connecting rod rotates, the angle signal generated by the potentiometer 12 realizes the acquisition of the action signal of the simulated compressed air pressure control valve.

[0032] Step 8: Connect the terminal 13 of potentiometer 12 to the signal acquisition device to achieve the final position signal detection.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A simulation device for a compressed air pressure control valve, characterized in that, include: The valve body (10) is fixedly installed, is cylindrical and hollow inside; A housing (14) is a hollow cylinder with an open bottom and closed top and sides. The bottom of the housing (14) fits over the top outside of the valve body (10). A rotary telescopic assembly is installed inside the housing (14). The rotary telescopic assembly can rotate along the axis of the housing (14) and extends or retracts its length along the axis of the housing (14) during rotation. A potentiometer (12) is installed at the bottom of the valve body (10), and the resistance adjustment terminal of the potentiometer (12) is connected to the rotary telescopic assembly.

2. The simulation device for the compressed air pressure control valve according to claim 1, characterized in that, The rotary telescopic assembly includes: T-shaped part (3) is disposed on the inner top of the housing (14), and its vertical end is a threaded rod; Nut (2), which is installed on the top of the threaded rod of the T-shaped piece (3); and A spring (6) is fitted onto the threaded rod of the T-shaped piece (3) and is located between the nut (2) and the valve body (10); The potentiometer (12) is a rotary potentiometer with a connecting rod (9) for adjusting the resistance value by rotation. The connecting rod (9) passes vertically upward through the valve body (10) and is connected to the bottom end of the threaded rod of the T-shaped part (3).

3. The simulation device for the compressed air pressure control valve according to claim 2, characterized in that, The threaded rod of the T-shaped part (3) is equipped with a limiting block (5) for limiting the stroke of the nut (2).

4. The simulation device for the compressed air pressure control valve according to claim 2, characterized in that, The rotary telescopic assembly also includes: The end cap (1) is fixedly connected to the top lower side of the housing (14) and located on the upper side of the T-shaped part (3). The horizontal end of the T-shaped part (3) is fixedly connected to the bottom of the end cap (1). The end cap (1) can rotate around the axis of the housing (14).

5. The simulation device for the compressed air pressure control valve according to claim 2, characterized in that, The rotary telescopic assembly also includes: The valve wall (4) is a hollow cylinder with a preset wall thickness. It is installed inside the housing (14) and coaxial with the housing (14), located between the T-shaped part (3) and the valve body (10). There is a preset distance between the top surface of the valve wall (4) and the bottom surface of the horizontal end of the T-shaped part (3).

6. The simulation device for the compressed air pressure control valve according to claim 2, characterized in that, The threaded rod of the T-shaped part (3) has a connecting bayonet (7) at the bottom, and the connecting rod (9) of the potentiometer (12) is connected to the threaded rod of the T-shaped part (3) through the connecting bayonet (7).

7. The simulation device for the compressed air pressure control valve according to claim 2, characterized in that, The valve body (10) is equipped with a support member (8) for supporting and limiting the spring (6) on its top.

8. The simulation device for the compressed air pressure control valve according to claim 2, characterized in that, The simulation device also includes a threaded cap (11); the bottom of the valve body (10) is provided with threads, and the threaded cap (11) is installed on the bottom of the valve body (10); the rotary potentiometer is connected to the bottom of the threaded cap (11); the connecting rod (9) passes vertically upward through the threaded cap (11) and the valve body (10) in sequence, and is connected to the bottom end of the threaded rod of the T-shaped part (3).

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