CN212775049U - Overflow valve device of automobile slow-lowering pneumatic control reversing valve - Google Patents
Overflow valve device of automobile slow-lowering pneumatic control reversing valve Download PDFInfo
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- CN212775049U CN212775049U CN202021649095.7U CN202021649095U CN212775049U CN 212775049 U CN212775049 U CN 212775049U CN 202021649095 U CN202021649095 U CN 202021649095U CN 212775049 U CN212775049 U CN 212775049U
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- valve
- overflow
- air pressure
- pneumatic
- slow
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- 238000012986 modification Methods 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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Abstract
The utility model relates to an overflow valve device of car air control switching-over valve that falls slowly, include: the device comprises an air pressure sensor, a main control board, an alarm system, an electromagnetic valve and a pneumatic hydraulic device; the air pressure sensor is arranged in an air pressure cylinder of the slow-descending air control reversing valve; the air pressure sensor, the alarm system and the electromagnetic valve are electrically connected with the main control board; the pneumatic hydraulic device is provided with a steam exhaust hole, a steam inlet hole and an overflow hole. The utility model has the advantages that: the utility model discloses utilize baroceptor, main control board, alarm system, solenoid valve and pneumatic hydraulic means to constitute the overflow valve device. When the pressure exceeds a certain range, the flow of the overflow valve is reduced, and the pressure in the system is ensured not to exceed the specified range, so that accidents are avoided, the real-time performance of the overflow valve device is improved by the air pressure sensor, and the safety of the alarm system is improved.
Description
Technical Field
The utility model relates to an overflow valve field especially relates to an overflow valve device of car air control switching-over valve that falls slowly.
Background
For an engineering vehicle with a hydraulic lifting self-discharging function, a hydraulic lifting system of the engineering vehicle generally adopts a hydraulic pneumatic control reversing valve to realize the control of oil injection lifting and descending and falling of a hydraulic cylinder, so that the lifting of a cargo compartment relative to a vehicle chassis is realized. However, most of the pneumatic control reversing valves adopted at present only have direct oil injection and oil return control, and the design of oil return flow is also large for improving the working efficiency, so that the speed of the cargo compartment is high when the cargo compartment descends, large impact is easily caused on a vehicle chassis, and potential safety hazards are brought.
The pneumatic control reversing valve with the slow descending function is used in a hydraulic lifting system of a vehicle, and can realize the slow descending of a cargo compartment; the automobile slow-lowering pneumatic control reversing valve is often provided with an overflow valve, but most of the existing overflow valves are mechanical devices, so that the real-time performance is poor, and corresponding alarm reminding is lacked.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough among the prior art, provide an overflow valve device of car air control switching-over valve that falls slowly.
The overflow valve device of the automobile slow-lowering pneumatic control reversing valve comprises: the device comprises an air pressure sensor, a main control board, an alarm system, an electromagnetic valve and a pneumatic hydraulic device; the air pressure sensor is arranged in an air pressure cylinder of the slow-descending air control reversing valve; the air pressure sensor, the alarm system and the electromagnetic valve are electrically connected with the main control board; the pneumatic hydraulic device is provided with a steam exhaust hole, a steam inlet hole and an overflow hole; the pneumatic hydraulic device is connected with a lifting hole on the slow-lowering pneumatic control reversing valve through a pipeline at the steam exhaust hole; the electromagnetic valve is connected with the pneumatic hydraulic device and controls the opening and closing of the steam exhaust hole, the steam inlet hole and the overflow hole.
Preferably, the slow-reducing pneumatic control reversing valve is a hydraulic pneumatic control reversing valve.
The utility model has the advantages that: the utility model discloses utilize baroceptor, main control board, alarm system, solenoid valve and pneumatic hydraulic means to constitute the overflow valve device. When the pressure exceeds a certain range, the flow of the overflow valve is reduced, and the pressure in the system is ensured not to exceed the specified range, so that accidents are avoided, the real-time performance of the overflow valve device is improved by the air pressure sensor, and the safety of the alarm system is improved.
Drawings
Fig. 1 is a schematic diagram of an overflow valve device of an automobile slow-lowering pneumatic control reversing valve (hydraulic pneumatic control reversing valve).
Description of reference numerals: lifting holes 1, steam exhaust holes 2, steam inlet holes 3, overflow holes 4 and pneumatic cylinders 5.
Detailed Description
The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, the present invention can be modified in several ways without departing from the principle of the present invention, and these modifications and modifications also fall into the protection scope of the claims of the present invention.
As an embodiment, as shown in fig. 1, an overflow valve device of a slow-lowering pneumatic directional valve (hydraulic pneumatic directional valve) for an automobile includes: the device comprises an air pressure sensor, a main control board (containing a main control chip programmed by a program), an alarm system, an electromagnetic valve and a pneumatic hydraulic device; the air pressure sensor is arranged in a pneumatic cylinder 5 of a slow-lowering pneumatic control reversing valve (hydraulic pneumatic control reversing valve); the air pressure sensor, the alarm system and the electromagnetic valve are electrically connected with the main control board; the pneumatic hydraulic device is provided with a steam exhaust hole 2, a steam inlet hole 3 and an overflow hole 4; the pneumatic hydraulic device is connected with a lifting hole 1 on a slow-lowering pneumatic control reversing valve (a hydraulic pneumatic control reversing valve) through a pipeline at the steam exhaust hole 2; the electromagnetic valve is connected with a pneumatic hydraulic device and controls the opening and closing of the steam exhaust hole 2, the steam inlet hole 3 and the overflow hole 4.
The voltage input of an overflow valve device of the automobile slow-lowering pneumatic control reversing valve (hydraulic pneumatic control reversing valve) is DC12V or DC 24V;
when the working pressure reaches 20mpa (or equivalent), the alarm system gives an alarm: when the air pressure reaches a safety boundary, the automobile slowly-descending air-controlled reversing valve (hydraulic air-controlled reversing valve) is lifted at any time.
When the working pressure reaches 23-25 mpa, the air pressure sensor transmits a trigger signal to the circuit main control board, the main control chip receives a signal source and sends an instruction to the electromagnetic valve, the electromagnetic valve closes the steam inlet hole 3 and the steam outlet hole 2 on the pneumatic hydraulic device, and air is discharged from the overflow hole 4, so that the slow-reducing pneumatic control reversing valve (the hydraulic pneumatic control reversing valve) stops working.
Claims (2)
1. The utility model provides an overflow valve device of car slow-falling gas accuse switching-over valve which characterized in that includes: the device comprises an air pressure sensor, a main control board, an alarm system, an electromagnetic valve and a pneumatic hydraulic device; the air pressure sensor is arranged in an air pressure cylinder (5) of the slow-descending air control reversing valve; the air pressure sensor, the alarm system and the electromagnetic valve are electrically connected with the main control board; the pneumatic hydraulic device is provided with a steam exhaust hole (2), a steam inlet hole (3) and an overflow hole (4); the pneumatic hydraulic device is connected with a lifting hole (1) on the slow-lowering pneumatic control reversing valve through a pipeline at the steam exhaust hole (2); the electromagnetic valve is connected with a pneumatic hydraulic device and controls the opening and closing of the steam exhaust hole (2), the steam inlet hole (3) and the overflow hole (4).
2. The overflow valve device of the automobile slow-descending pneumatic control reversing valve according to claim 1, is characterized in that: the slow-lowering pneumatic control reversing valve is a hydraulic pneumatic control reversing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021649095.7U CN212775049U (en) | 2020-08-10 | 2020-08-10 | Overflow valve device of automobile slow-lowering pneumatic control reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021649095.7U CN212775049U (en) | 2020-08-10 | 2020-08-10 | Overflow valve device of automobile slow-lowering pneumatic control reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212775049U true CN212775049U (en) | 2021-03-23 |
Family
ID=75051146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021649095.7U Expired - Fee Related CN212775049U (en) | 2020-08-10 | 2020-08-10 | Overflow valve device of automobile slow-lowering pneumatic control reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212775049U (en) |
-
2020
- 2020-08-10 CN CN202021649095.7U patent/CN212775049U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210323 |