Pneumatic control device capable of preventing brake failure of air cylinder

By designing a pneumatic control device with brake air path control and pilot one-way valve coordination, the hovering problem caused by the aging of springs after long-term use of the cylinder brake is solved, and the stable hovering of the cylinder movable rod is achieved, which extends the service life of the equipment and ensures safety.

CN222591460UActive Publication Date: 2025-03-11GAC HONDA AUTOMOBILE CO LTD
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Patent Information

Application Number
CN202420725253.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-09
Publication Date
2025-03-11
Estimated Expiration
2034-04-09

AI Technical Summary

Technical Problem

After the cylinder brake is used for a long time, the internal springs are aging and the return force is insufficient, resulting in the cylinder being unable to hover, which poses a safety hazard. The spring disassembly is high and it is not easy to disassemble and replace.

Method used

A pneumatic control device is designed to realize the dual brake control function by adding the coordination of brake air path control and pilot check valves to ensure that the cylinder movable lever can hover. The device includes a brake air path unit, a first air path, a second air path, a third air path, a fourth air path, a pilot one-way valve and a three-position five-way valve. Through the coordination of these air paths and valves, the rising, falling and hovering states of the cylinder are controlled.

Benefits of technology

It effectively solves the problem that the cylinder console cannot be stopped in the middle, extends the service life of old equipment, avoids maintenance costs and working hours caused by brake problems, and ensures safety.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN222591460U_ABST
    Figure CN222591460U_ABST
Patent Text Reader

Abstract

The utility model provides a pneumatic control device capable of preventing brake failure of an air cylinder, and relates to the technical field of pneumatic control. The air cylinder brake system comprises an air cylinder and an air cylinder brake which are connected with each other, and further comprises a brake air channel unit, a first air channel, a second air channel, a third air channel, a fourth air channel, a pilot-operated type one-way valve and a three-position five-way valve, the brake air channel unit is communicated with the air cylinder brake, and the two ends of the first air channel are communicated with the brake air channel unit and the pilot-operated type one-way valve respectively. The pilot-operated type one-way valve is communicated with the first end of the second air channel and the first end of the third air channel, the second end of the second air channel is communicated with the three-position five-way valve, the second end of the third air channel is communicated with the air cylinder, and the two ends of the fourth air channel are communicated with the air cylinder and the three-position five-way valve respectively. The characteristics of the pilot-operated type one-way valve are used for being matched with air cylinder brakes, the double-brake control function is achieved, the problem that an air cylinder control rack cannot be stopped in the middle is effectively solved, and safety is guaranteed.
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Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic control, in particular to a pneumatic control device capable of preventing cylinder brake failure. Background Art

[0002] The two ends of the cylinder are usually connected to two air circuits and the cylinder is connected to a cylinder brake, which is usually connected to the brake air circuit. When the brake air circuit is ventilated, the cylinder brake is not activated. At this time, the cylinder movable rod can move up and down with the assistance of the two air circuits. When the brake air circuit is not ventilated, the cylinder brake is activated, and the air pressure is the same at both ends of the cylinder. At this time, the spring return inside the cylinder brake clamps the cylinder movable rod brake, and the cylinder movable rod can achieve force balance and hover at the required position.

[0003] The applicant has found that the prior art has at least the following technical problems: with the long-term use of the cylinder brake, the spring inside the cylinder brake gradually ages, the size decreases, the spring elasticity also decreases, the spring return force is insufficient, and the cylinder movable rod cannot be clamped. At this time, both ends of the cylinder have the same air pressure, resulting in unbalanced force, the cylinder continues to descend, and cannot hover, which poses a safety hazard. The disassembly of this type of spring is highly dangerous and difficult to disassemble and replace. Utility Model Content

[0004] The purpose of the utility model is to provide a pneumatic control device that can prevent cylinder brake failure, so as to solve the technical problem that the long-term use of cylinder brakes in the prior art leads to aging of the internal spring, insufficient return force, and inability to hover, which poses a safety hazard. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A pneumatic control device for preventing cylinder brake failure comprises a connected cylinder and a cylinder brake, and is characterized in that it also comprises a brake air circuit unit, a first air circuit, a second air circuit, a third air circuit, a fourth air circuit, a pilot one-way valve and a three-position five-way valve. The brake air circuit unit is connected to the cylinder brake, the two ends of the first air circuit are respectively connected to the brake air circuit unit and the pilot one-way valve, the pilot one-way valve is respectively connected to the first end of the second air circuit and the first end of the third air circuit, the second end of the second air circuit is connected to the three-position five-way valve, the second end of the third air circuit is connected to the cylinder, and the two ends of the fourth air circuit are respectively connected to the cylinder and the three-position five-way valve.

[0007] Preferably, the brake air circuit unit comprises a two-position three-way valve and a fifth air circuit, both ends of the fifth air circuit are respectively connected to the two-position three-way valve and the cylinder brake, and the fifth air circuit is connected to one end of the first air circuit.

[0008] Preferably, a pressure regulating valve is provided on the fourth gas path.

[0009] Preferably, both the two-position three-way valve and the three-position five-way valve are provided with a muffler.

[0010] Preferably, a manual valve is further included, and the manual valve is connected to the two-position three-way valve and the three-position five-way valve through air circuits.

[0011] The beneficial effects of the utility model are as follows: the pneumatic control device is designed with three operating states. When the cylinder movable rod rises, the three-position five-way valve controls the ventilation of the second air circuit and the ventilation of the brake air circuit unit. At this time, the cylinder brake does not work, and the fourth air circuit is used for exhaust. Since the first air circuit is connected with the brake air circuit unit, the first air circuit is ventilated, so that the pilot one-way valve is turned on. At this time, the gas in the second air circuit enters the third air circuit, and then enters the lower space of the cylinder, driving the cylinder movable rod to rise;

[0012] When the cylinder movable rod descends, the three-position five-way valve controls the ventilation of the fourth air circuit and the brake air circuit unit. At this time, the cylinder brake does not work, and the third air circuit and the second air circuit are used for exhaust. Since the first air circuit is connected with the brake air circuit unit, the first air circuit is ventilated, so that the pilot one-way valve is turned on. At this time, the gas of the fourth air circuit enters the upper space of the cylinder, driving the cylinder movable rod to descend;

[0013] When the cylinder movable rod needs to hover, the brake air circuit unit is not ventilated. At this time, the cylinder brake works, and the first air circuit is not ventilated, resulting in the pilot-operated one-way valve being blocked. At this time, the gas in the third air circuit will not be discharged into the second air circuit, and the air inside the cylinder will no longer flow, which is equivalent to blocking the cylinder exhaust, thereby keeping the cylinder movable rod in a hovering state;

[0014] The pneumatic control device has been improved and innovated, with brake air circuit control added. It uses the characteristics of the pilot one-way valve to cooperate with the cylinder brake to achieve dual brake control function, effectively solving the problem that the cylinder control stand cannot stop in the middle. Through the above improvements, when encountering problems such as stand cylinder brake fatigue and insufficient braking force, it is no longer necessary to replace the cylinder, which increases the service life of aging equipment, avoids maintenance costs and maintenance hours caused by brake problems, and ensures safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is the gas circuit structure diagram of the utility model;

[0017] In the figure, 11, cylinder; 12, cylinder brake;

[0018] 2. Brake air circuit unit; 21. Two-position three-way valve; 22. Fifth air circuit;

[0019] 31, first gas path; 32, second gas path; 33, third gas path; 34, fourth gas path;

[0020] 5. Pilot operated check valve;

[0021] 6. Three-position five-way valve;

[0022] 7. Pressure regulating valve;

[0023] 8. Muffler;

[0024] 9. Manual valve. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "center", "lateral", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or location relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] Reference Figure 1 The utility model provides a pneumatic control device for preventing cylinder brake failure, including a connected cylinder 11 and a cylinder brake 12, and also includes a brake air circuit unit 2, a first air circuit 31, a second air circuit 32, a third air circuit 33, a fourth air circuit 34, a pilot one-way valve 5 and a three-position five-way valve 6. The brake air circuit unit 2 is connected to the cylinder brake 12, and the two ends of the first air circuit 31 are respectively connected to the brake air circuit unit 2 and the pilot one-way valve 5. The pilot one-way valve 5 is respectively connected to the first end of the second air circuit 32 and the first end of the third air circuit 33. The second end of the second air circuit 32 is connected to the three-position five-way valve 6, the second end of the third air circuit 33 is connected to the cylinder 11, and the two ends of the fourth air circuit 34 are respectively connected to the cylinder 11 and the three-position five-way valve 6.

[0029] In fact, the main gas path of the pilot-operated one-way valve 5 is connected to the second gas path 32 and the third gas path 33 respectively. After the first gas path 31 is ventilated, the main gas path of the pilot-operated one-way valve 5 can be controlled to be in a connected state. When the first gas path 31 is not ventilated, the main gas path of the pilot-operated one-way valve 5 can be controlled to be in a disconnected state.

[0030] The utility model is designed with three operating states. When the cylinder movable rod rises, the three-position five-way valve 6 controls the ventilation of the second air circuit 32, and the brake air circuit unit 2 is ventilated. At this time, the cylinder brake 12 does not work, and the fourth air circuit 34 is used for exhaust. Since the first air circuit 31 is connected with the brake air circuit unit 2, the first air circuit 31 is ventilated, so that the pilot one-way valve 5 is turned on. At this time, the gas in the second air circuit 32 enters the third air circuit 33, and then enters the lower space of the cylinder 11, driving the cylinder movable rod to rise;

[0031] When the cylinder movable rod descends, the three-position five-way valve 6 controls the ventilation of the fourth air circuit 34, and the brake air circuit unit 2 is ventilated. At this time, the cylinder brake 12 does not work, and the third air circuit 33 and the second air circuit 32 are used for exhaust. Since the first air circuit 31 is connected with the brake air circuit unit 2, the first air circuit 31 is ventilated, so that the pilot one-way valve 5 is turned on. At this time, the gas in the fourth air circuit 34 enters the upper space of the cylinder 11, driving the cylinder movable rod to descend;

[0032] When the cylinder movable rod needs to hover, the brake air circuit unit 2 is not ventilated. At this time, the cylinder brake 12 works, and the first air circuit 31 is not ventilated, resulting in the pilot one-way valve 5 being blocked. At this time, the gas in the third air circuit 33 will not be discharged into the second air circuit 32, and the air inside the cylinder will no longer flow, which is equivalent to blocking the cylinder exhaust, thereby keeping the cylinder movable rod in a hovering state.

[0033] The utility model improves and innovates, increases brake air circuit control, utilizes the characteristics of the pilot one-way valve 5, and cooperates with the cylinder brake 12 to achieve a dual brake control function, effectively solving the problem that the cylinder control stand cannot stop in the middle. Through the above improvements, when encountering problems such as stand cylinder brake fatigue and insufficient braking force, it is no longer necessary to replace the cylinder, thereby improving the service life of aging equipment, avoiding maintenance costs and maintenance hours caused by brake problems, and ensuring safety.

[0034] As an optional implementation, the brake air circuit unit 2 includes a two-position three-way valve 21 and a fifth air circuit 22. The two ends of the fifth air circuit 22 are respectively connected to the two-position three-way valve 21 and the cylinder brake 12. The fifth air circuit 22 is connected to one end of the first air circuit 31. The gas enters the fifth air circuit 22 through the control of the two-position three-way valve 21. After the fifth air circuit 22 is ventilated, the first air circuit 31 will also be ventilated.

[0035] As an optional implementation, a pressure regulating valve 7 is provided on the fourth gas circuit 34, and the pressure regulating valve 7 can adjust the pressure of the fourth gas circuit 34, thereby adjusting the speed at which the cylinder movable rod descends.

[0036] As an optional implementation, both the two-position three-way valve 21 and the three-position five-way valve 6 are provided with a muffler 8 , which can reduce the noise generated when the gas flows through the two-position three-way valve 21 and the three-position five-way valve 6 .

[0037] As an optional implementation, a manual valve 9 is also included, which is connected to the two-position three-way valve 21 and the three-position five-way valve 6 through air circuits respectively, and the manual valve 9 controls the actual operation of the two-position three-way valve 21 and the three-position five-way valve 6 in a pneumatic manner.

[0038] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A pneumatic control device capable of preventing cylinder brake failure, comprising a connected cylinder (11) and a cylinder brake (12), characterized in that: The invention also comprises a brake air circuit unit (2), a first air circuit (31), a second air circuit (32), a third air circuit (33), a fourth air circuit (34), a pilot one-way valve (5) and a three-position five-way valve (6); the brake air circuit unit (2) is connected to the cylinder brake (12); the two ends of the first air circuit (31) are respectively connected to the brake air circuit unit (2) and the pilot one-way valve (5); the pilot one-way valve (5) is respectively connected to the first end of the second air circuit (32) and the first end of the third air circuit (33); the second end of the second air circuit (32) is connected to the three-position five-way valve (6); the second end of the third air circuit (33) is connected to the cylinder (11); and the two ends of the fourth air circuit (34) are respectively connected to the cylinder (11) and the three-position five-way valve (6).

2. The pneumatic control device for preventing cylinder brake failure according to claim 1, characterized in that: The brake air circuit unit (2) comprises a two-position three-way valve (21) and a fifth air circuit (22), wherein two ends of the fifth air circuit (22) are respectively connected to the two-position three-way valve (21) and the cylinder brake (12), and the fifth air circuit (22) is connected to one end of the first air circuit (31).

3. The pneumatic control device for preventing cylinder brake failure according to claim 1, characterized in that: The fourth gas path (34) is provided with a pressure regulating valve (7).

4. The pneumatic control device for preventing cylinder brake failure according to claim 2, characterized in that: The two-position three-way valve (21) and the three-position five-way valve (6) are both provided with a muffler (8).

5. The pneumatic control device for preventing cylinder brake failure according to claim 2, characterized in that: It also comprises a manual valve (9), wherein the manual valve (9) is respectively connected to the two-position three-way valve (21) and the three-position five-way valve (6) through air paths.