A pneumatic control circuit for swing unit end damping

Abstract

The utility model discloses a kind of pneumatic control loop for swing unit end buffering, including gas source processing, it is characterized by: the outlet of gas source processing is connected with the 1 mouth of first two-position three-way single electric control valve, the 1 mouth of two-position five-way double electric control valve and the 1 mouth of second two-position three-way single electric control valve respectively through pipeline, the 4 mouth of two-position five-way double electric control valve is connected with the inlet of first gas-liquid converter through pipeline, and the outlet of first gas-liquid converter is connected with the 1 mouth of first one-way throttling speed regulating valve, the 2 mouth of first one-way throttling speed regulating valve is connected with the 1 mouth of first two-position two-way single gas control valve, and the 2 mouth of first two-position two-way single gas control valve is connected with the 1 mouth of hydraulic swing unit.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic circuit control, and in particular to a pneumatic control circuit for end buffering of a swing unit. Background Technology

[0002] In the field of mechanics, oscillating units are a commonly used mechanical structure. However, oscillating units have a significant drawback: at the end of the oscillation, they generate a very large impact due to inertial forces. This impact is directly proportional to the oscillation speed and the mass of the oscillating load. If this impact energy is not properly absorbed, it will greatly affect the stability of the overall mechanism and the safety of equipment operation.

[0003] To solve the above problems, the current approach is to add an external mechanical buffer. However, the buffering effect of the buffer is usually proportional to its size. Therefore, for hydraulic swing units, since the impact force is relatively large, a particularly large buffer is required to effectively achieve buffering, which has problems such as large space occupation and high cost. In addition, since the buffer force of the buffer itself is fixed, there is a limitation on the load. When selecting a buffer, it must be selected according to its upper limit, which has certain limitations and also presents the problem of difficulty in controlling costs.

[0004] Therefore, a method or apparatus is needed to solve the above problems. Utility Model Content

[0005] This invention addresses the aforementioned shortcomings of existing technologies by proposing a pneumatic control circuit that is simple in structure, ingenious in design, and rational in layout. This circuit can absorb the impact force at the end of the swing unit's motion, allowing it to smoothly reduce its speed and ensuring the smooth operation of the entire swing unit system.

[0006] The technical solution of this utility model is: a pneumatic control circuit for end buffering of a swing unit, including an air source treatment 1, characterized in that: the outlet of the air source treatment 1 is connected to port 1 of a first two-position three-way single solenoid valve 9, port 1 of a two-position five-way double solenoid valve 2, and port 1 of a second two-position three-way single solenoid valve 10 via pipelines. The four ports of the two-position five-way dual solenoid valve 2 are connected to the inlet of the first gas-liquid converter 3 via pipelines, while the outlet of the first gas-liquid converter 3 is connected to port 1 of the first one-way throttle speed control valve 5. The two ports of the first one-way throttle speed control valve 5 are connected to port 1 of the first two-position two-way single pneumatic control valve 7, and the two ports of the first two-position two-way single pneumatic control valve 7 are connected to port 1 of the hydraulic swing unit 13. The two ports of the two-position five-way dual solenoid valve 2 are connected to the inlet of the second gas-liquid converter 4 via pipelines, while the outlet of the second gas-liquid converter 4 is connected to port 1 of the second one-way throttle speed control valve 6. The two ports of the second one-way throttle speed control valve 6 are connected to port 1 of the second two-position two-way single pneumatic control valve 8, and the two ports of the second two-position two-way single pneumatic control valve 8 are connected to port 2 of the hydraulic swing unit 13. The first two-position three-way single solenoid valve 9 has port 3 connected to the first exhaust throttle valve 11, and port 2 connected to port 14 of the first two-position two-way single pneumatic valve 7. The third port of the second two-position three-way single solenoid valve 10 is connected to the second exhaust throttle valve 12, and its second port is connected to the fourth port of the second two-position two-way single pneumatic valve 8.

[0007] Compared with the prior art, this utility model has the following advantages: This type of pneumatic control circuit for end-buffering of the swing unit is simple in structure, ingenious in design, and reasonable in layout. It addresses the problems of traditional mechanical dampers that absorb the impact of swinging motion by designing a special structure.

[0008] It utilizes a special air / oil circuit structure to absorb the impact force at the end of the swing motion, allowing the swing unit to smoothly reduce its speed and thus reduce impact force. This ensures the entire swing unit system operates under stable conditions. Compared to traditional mechanical dampers, it requires less space, its damping effect can be adjusted according to actual conditions, it is highly versatile, and its cost is relatively low.

[0009] Furthermore, the manufacturing process of this pneumatic control circuit is simple and the manufacturing cost is low. Therefore, it can be said that it has many advantages and is particularly suitable for promotion and application in this field, with a very broad market prospect. Attached Figure Description

[0010] Figure 1 This is a system composition diagram of an embodiment of the present utility model. Detailed Implementation

[0011] The specific embodiments of this utility model will be described below with reference to the accompanying drawings. Figure 1 As shown: A pneumatic control circuit for end buffering of a swing unit includes an air source treatment 1. The outlet of the air source treatment 1 is connected to port 1 of a first two-position three-way single solenoid valve 9, port 1 of a two-position five-way double solenoid valve 2, and port 1 of a second two-position three-way single solenoid valve 10 via pipelines. The four ports of the two-position five-way dual solenoid valve 2 are connected to the inlet of the first gas-liquid converter 3 via pipelines, while the outlet of the first gas-liquid converter 3 is connected to port 1 of the first one-way throttle speed control valve 5. The two ports of the first one-way throttle speed control valve 5 are connected to port 1 of the first two-position two-way single pneumatic control valve 7, and the two ports of the first two-position two-way single pneumatic control valve 7 are connected to port 1 of the hydraulic swing unit 13. The two ports of the two-position five-way dual solenoid valve 2 are connected to the inlet of the second gas-liquid converter 4 via pipelines, while the outlet of the second gas-liquid converter 4 is connected to port 1 of the second one-way throttle speed control valve 6. The two ports of the second one-way throttle speed control valve 6 are connected to port 1 of the second two-position two-way single pneumatic control valve 8, and the two ports of the second two-position two-way single pneumatic control valve 8 are connected to port 2 of the hydraulic swing unit 13. The first two-position three-way single solenoid valve 9 has port 3 connected to the first exhaust throttle valve 11, and port 2 connected to port 14 of the first two-position two-way single pneumatic valve 7. The third port of the second two-position three-way single solenoid valve 10 is connected to the second exhaust throttle valve 12, and its second port is connected to the fourth port of the second two-position two-way single pneumatic valve 8.

[0012] The working process of the pneumatic control circuit for the end buffer of the swing unit in this embodiment of the utility model is as follows: The system is arranged in the pneumatic control circuit of the swing unit, and the air source connected to the air source processing 1 is turned on. The air source processing 1 starts to work, and air is supplied to port 1 of the first two-position three-way single solenoid valve 9, port 1 of the two-position five-way double solenoid valve 2, and port 1 of the second two-position three-way single solenoid valve 10. When the swing unit needs to swing in the forward direction, the control system controls the 14th port of the two-position five-way double solenoid valve 2 to be energized, the two-position five-way double solenoid valve 2 to switch, its 4th port to discharge air and its 2nd port to discharge air, the 2nd port of the first two-position three-way single solenoid valve 9 to discharge air, and the 14th port of the first two-position two-way single air control valve 7 to be energized, driving the first two-position two-way single air control valve 7 to switch. When port 14 of the second two-position three-way single solenoid valve 10 is energized, it drives the second two-position three-way single solenoid valve 10 to switch. At this time, air is discharged from port 2 of the second two-position three-way single solenoid valve 10, and air is discharged from port 14 of the second two-position two-way single pneumatic valve 8, driving the second two-position two-way single pneumatic valve 8 to switch. The first gas-liquid converter 3 sequentially inputs hydraulic pressure to port 1 of the hydraulic swing unit 13 through the first one-way throttle speed control valve 5 and the first two-position two-way single air control valve 7, while port 2 of the hydraulic swing unit 13 sequentially outputs hydraulic pressure to the second gas-liquid converter 4 through the second two-position two-way single air control valve 8 and the second one-way throttle speed control valve 6. At this time, the hydraulic swing unit 13 swings in the forward direction. Because the swing unit has a huge inertia, it needs to decelerate in advance when it is about to reach the position. When deceleration is required, the control system automatically controls the power off port 14 of the second two-position three-way single solenoid valve 10, the second two-position three-way single solenoid valve 10 reverses, and port 3 of the second two-position three-way single solenoid valve 10 exhausts through the second exhaust throttle valve 12. Because the exhaust speed is adjustable, the depressurization time of the control air port 14 of the second two-position two-way single air control valve 8 is controllable. The second two-position two-way single air control valve 8 slowly reverses, allowing the two ports of the hydraulic swing unit 13 to gradually change from normal full-diameter depressurization to small-diameter depressurization. The back pressure formed during this process has a very good buffering effect on the swing unit, thereby preventing it from generating huge impacts and protecting the mechanical and air circuit structures. The specific buffering time can be adjusted by the second exhaust throttle valve 12, and multiple tests can be conducted to achieve the optimal effect.

[0013] When swinging in the opposite direction, the entire process is the opposite of what was described above.

Claims

1. A pneumatic control circuit for end-of-swing buffer of a swing unit, comprising air source processing (1), characterized in that: The outlet of the gas source treatment (1) is connected to port 1 of the first two-position three-way single solenoid valve (9), port 1 of the two-position five-way double solenoid valve (2), and port 1 of the second two-position three-way single solenoid valve (10) via pipelines. The four ports of the two-position five-way dual solenoid valve (2) are connected to the inlet of the first gas-liquid converter (3) via pipelines, while the outlet of the first gas-liquid converter (3) is connected to port 1 of the first one-way throttle speed control valve (5). The two ports of the first one-way throttle speed control valve (5) are connected to port 1 of the first two-position two-way single pneumatic control valve (7), and the two ports of the first two-position two-way single pneumatic control valve (7) are connected to port 1 of the hydraulic swing unit (13). The two ports of the two-position five-way dual solenoid valve (2) are connected to the inlet of the second gas-liquid converter (4) via pipelines, while the outlet of the second gas-liquid converter (4) is connected to the port of the second one-way throttle speed control valve (6). The two ports of the second one-way throttle speed control valve (6) are connected to the port of the second two-position two-way single pneumatic control valve (8), and the two ports of the second two-position two-way single pneumatic control valve (8) are connected to the two ports of the hydraulic swing unit (13). The first two-position three-way single solenoid valve (9) has its 3rd port connected to the first exhaust throttle valve (11), and its 2nd port connected to the 14th port of the first two-position two-way single pneumatic valve (7). The third port of the second two-position three-way single solenoid valve (10) is connected to the second exhaust throttle valve (12), and its second port is connected to the fourth port of the second two-position two-way single pneumatic valve (8).

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