CN215475049U - Purely mechanical hand brake releasing device for pneumatic brake commercial vehicle - Google Patents
Purely mechanical hand brake releasing device for pneumatic brake commercial vehicle Download PDFInfo
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- CN215475049U CN215475049U CN202121413445.4U CN202121413445U CN215475049U CN 215475049 U CN215475049 U CN 215475049U CN 202121413445 U CN202121413445 U CN 202121413445U CN 215475049 U CN215475049 U CN 215475049U
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Abstract
The utility model discloses a purely mechanical hand brake release device for a pneumatic brake commercial vehicle, which comprises a hand brake valve, a two-position three-way electromagnetic valve, a one-way valve, a spare air cylinder, a two-way one-way valve, a differential relay valve, a four-loop protection valve and a hand brake air cylinder, wherein air inlets of the spare air cylinder and the hand brake air cylinder are connected with the four-loop protection valve, the hand brake valve is connected with an air outlet of the hand brake air cylinder, the one-way valve is arranged at an air outlet of the spare air cylinder and connected to an air inlet of the two-position three-way electromagnetic valve, an air outlet of the two-position three-way electromagnetic valve is connected with the two-way one-way valve, and the two-way one-way valve is connected between the hand brake valve and the differential relay valve in series. The method is simple and convenient to operate, low in cost and capable of effectively achieving releasing the hand brake of the commercial vehicle (air brake) without an external air source in the vehicle, and is quicker and more efficient compared with the original method of releasing by means of the external air source.
Description
The technical field is as follows:
the utility model relates to a purely mechanical hand brake release device for a pneumatic brake commercial vehicle.
Background art:
the air compressor of the air brake vehicle is out of work due to faults or no power supply (power failure), and the hand brake air cylinder does not have enough air pressure to release the hand brake, when the hand brake air cylinder meets the condition, the air charging connector which can be externally connected with an air source is generally reserved in the whole brake system, and when the air source is switched on and the air charging connector is inflated, the air charging connector reaches the parking air chamber, the parking spring is pushed open, so that the hand brake is released.
The above method has the following disadvantages in the operation process:
1. the air inflation release can be realized only by the existence of an external air source, and the requirements on the environmental equipment conditions of the vehicle when the vehicle breaks down are met.
2. The operation of connecting an air pipe outside the vehicle is not simple enough. The length of the external connecting pipe is required, and an external guiding connecting pipe is required to be arranged if necessary.
The utility model has the following contents:
the utility model provides a purely mechanical hand brake releasing device for a pneumatic brake commercial vehicle, which aims to solve the problems in the prior art.
The technical scheme adopted by the utility model is as follows:
the utility model provides a hand brake device is relieved to pure machinery for pneumatic brake commercial car, includes hand brake valve, two three way solenoid valve, check valve, reserve gas receiver, bi-pass check valve, differential relay valve, four return circuit protection valves and hand brake gas receiver, the air inlet of reserve gas receiver and hand brake gas receiver all links to each other with four return circuit protection valves, and the hand brake valve links to each other with the gas outlet of hand brake gas receiver, and the gas outlet of reserve gas receiver is installed the check valve and is connected to two three way solenoid valve's air inlet, and two three way solenoid valve's gas outlet links to each other with the bi-pass check valve, and the bi-pass check valve is established ties between hand brake valve and differential relay valve.
Further, the two-position three-way electromagnetic valve is a lock-type two-position three-way electromagnetic valve.
Furthermore, an automatic water drain valve is arranged on the spare air cylinder.
The utility model has the following beneficial effects:
the method is simple and convenient to operate, low in cost and capable of effectively achieving releasing the hand brake of the commercial vehicle (air brake) without an external air source in the vehicle, and is quicker and more efficient compared with the original method of releasing by means of the external air source.
Description of the drawings:
fig. 1 is a schematic diagram of the present invention.
The specific implementation mode is as follows:
the utility model will be further described with reference to the accompanying drawings.
As shown in fig. 1, the purely mechanical hand brake release device for the pneumatic brake commercial vehicle comprises a hand brake valve 11, a two-position three-way electromagnetic valve 12, a one-way valve 14, a spare air cylinder 15, a two-way one-way valve 16, a differential relay valve 17, a four-loop protection valve 18, a hand brake air cylinder 19 and a pipeline 13 for connecting the components.
An air inlet of the standby air cylinder 15 is connected to 24 ports on the four-loop protection valve 18, a check valve 14 is installed at an air outlet of the standby air cylinder 15 and is connected to a P port (air inlet) of the two-position three-way electromagnetic valve 12 through a pipeline 13, an A port (air outlet) of the two-position three-way electromagnetic valve 12 is connected to a 1 port of the two-way check valve 16, 2 ports of the two-way check valve 16 are connected in series in a loop between the hand brake valve 11 and the differential relay valve 17, and when a button of the two-position three-way electromagnetic valve 12 is pressed, a 22 port of the differential relay valve 17 reaches the parking air chamber to release the hand brake.
The utility model is additionally provided with a spare air storage cylinder 15, the volume of the spare air storage cylinder 15 is determined according to the volume of air chambers of different vehicle types, the bottom of the spare air storage cylinder 15 is provided with an automatic water drain valve which is provided with an inlet and an outlet, the air inlet is provided with a one-way valve 14 to ensure that the gas does not flow back to obtain the pressure maintaining (1 mpa), and the spare air storage cylinder 15 is connected with a 24-port three-way joint of a four-loop protection valve 18, and the air outlet of the spare air storage cylinder 15 is connected with a P (air inlet) of a mechanical two-position three-way electromagnetic valve 12.
The two-position three-way electromagnetic valve 12 is arranged at the position easy to operate by a driver in a cab, and the air outlet of the two-position three-way electromagnetic valve is connected with the air inlet at one end of the two-way one-way valve 16.
After the valve body pipeline is correctly installed, the complete function realization process is as follows:
1. when the whole vehicle operates under normal working conditions, the button of the two-position three-way electromagnetic valve 12 is in a normal reset state, the port A of the two-position three-way electromagnetic valve 12 is communicated with the port R (atmosphere), and when the hand brake valve 11 is released, 2 ports of high-pressure gas of the hand brake valve 11 flow into the port 1 of the two-way one-way valve 16 and are finally filled into the parking air chamber, and the parking spring is ejected to open, so that the hand brake is released.
2. When a vehicle is in fault and the original hand brake gas circuit cannot be used for releasing the hand brake, the standby gas cylinder 15 which is always in a pressure maintaining state is used as a storage gas source, the P port and the A port of the two-position three-way electromagnetic valve 12 are communicated by pressing the button of the two-position three-way electromagnetic valve 12, the P port and the A port enter the 2 ports of the two-way one-way valve 16, the P port and the A port flow out of the 2 ports of the two-way one-way valve 16 to enter the differential relay valve 17, and finally the P port and the A port reach the parking gas chamber, so that the release of the hand brake can be realized. And when the whole vehicle is powered off in the process, the power-off control method can also be realized.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the utility model and these modifications should also be considered as the protection scope of the utility model.
Claims (3)
1. The utility model provides a hand brake device is relieved to pure machinery for air brake commercial car which characterized in that: including manual brake valve (11), two three way solenoid valve (12), check valve (14), reserve air receiver (15), two-way check valve (16), differential relay valve (17), four-circuit protection valve (18) and manual brake air receiver (19), the air inlet of reserve air receiver (15) and manual brake air receiver (19) all links to each other with four-circuit protection valve (18), and manual brake valve (11) link to each other with the gas outlet of manual brake air receiver (19), and check valve (14) are installed and the air inlet of three way solenoid valve (12) is connected to the gas outlet of reserve air receiver (15), and the gas outlet of two three way solenoid valve (12) links to each other with two-way check valve (16), and two-way check valve (16) are established ties between manual brake valve (11) and differential relay valve (17).
2. Purely mechanical hand brake release device for air-braked commercial vehicles as claimed in claim 1, characterized in that: the two-position three-way electromagnetic valve (12) is a lock-type two-position three-way electromagnetic valve.
3. Purely mechanical hand brake release device for air-braked commercial vehicles as claimed in claim 1, characterized in that: an automatic water drain valve is arranged on the spare air storage cylinder (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121413445.4U CN215475049U (en) | 2021-06-24 | 2021-06-24 | Purely mechanical hand brake releasing device for pneumatic brake commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121413445.4U CN215475049U (en) | 2021-06-24 | 2021-06-24 | Purely mechanical hand brake releasing device for pneumatic brake commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215475049U true CN215475049U (en) | 2022-01-11 |
Family
ID=79721586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121413445.4U Active CN215475049U (en) | 2021-06-24 | 2021-06-24 | Purely mechanical hand brake releasing device for pneumatic brake commercial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215475049U (en) |
-
2021
- 2021-06-24 CN CN202121413445.4U patent/CN215475049U/en active Active
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