CN218929440U - Special automobile safety interlocking pneumatic control system - Google Patents
Special automobile safety interlocking pneumatic control system Download PDFInfo
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- CN218929440U CN218929440U CN202223508984.3U CN202223508984U CN218929440U CN 218929440 U CN218929440 U CN 218929440U CN 202223508984 U CN202223508984 U CN 202223508984U CN 218929440 U CN218929440 U CN 218929440U
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- interlocking
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- parking brake
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Abstract
The utility model relates to a special automobile safety interlocking pneumatic control system, which controls a parking brake air source control valve to cut off a parking brake air source through the combination of pneumatic components to cause safety interlocking braking; and checking whether the vehicle-mounted equipment is reset, whether the vehicle-mounted equipment is separated from an external device and whether the power takeoff is disconnected or not through each safety interlocking indicator lamp respectively, so that the safety of the vehicle and personnel is ensured; when a safety accident occurs, the parking brake can be released only by opening the overrun safety interlocking switch in the cab, and the vehicle can rapidly escape from the accident site.
Description
Technical Field
The utility model belongs to the technical field of special automobiles, and particularly relates to a special automobile safety interlocking pneumatic control system.
Background
The special automobiles in China are various, and part of the special automobiles need to be in a braking state when in operation, power is supplied to the upper garment through a power takeoff, such as an overhead working truck and a fuelling truck, and the situations that staff climb to the roof, vehicle-mounted equipment is connected with an external device and the like exist. The braking of the vehicle is usually realized by operating a hand brake by a driver, and when the vehicle-mounted device is not reset or a worker is arranged on the roof of the vehicle, the vehicle is driven away, and accidents are likely to happen.
Disclosure of Invention
Aiming at the problem that the safety of the traditional special automobile is insufficient, the utility model provides a special automobile safety interlocking pneumatic control system which can automatically lock the parking brake when the automobile works and automatically release the parking brake when the work task is completed.
The technical scheme of the utility model is as follows: a special automobile safety interlocking pneumatic control system comprises a gas storage tank 1, an interlocking valve I2 a, an interlocking valve II 2b, a shuttle valve I3 a, a shuttle valve II 3b, a vehicle-mounted equipment safety interlocking indicator lamp 4a, an external device safety interlocking indicator lamp 4b, a power takeoff safety interlocking indicator lamp 4c, a power takeoff interlocking valve 5a, a brake interlocking valve 5b, a parking brake gas source control valve 5c, an overrunning safety interlocking switch 6 and a brake gas chamber 7.
The first interlocking valve 2a is a normally open valve and is arranged at the position of the vehicle-mounted equipment, the inlet of the first interlocking valve is connected with the air storage tank 1, and the outlet of the first interlocking valve is connected with the inlet P1 of the shuttle valve 3 a.
The second interlock valve 2b is a normally closed valve, is installed at a position to be connected to an external device, has an inlet connected to the air tank 1, and has an outlet connected to the inlet P2 of the shuttle valve 3 a.
The power take-off interlocking valve 5a is a normally closed valve, an inlet of the power take-off interlocking valve is connected with the air storage tank 1, and an outlet of the power take-off interlocking valve is connected with an inlet P3 of the shuttle valve 3 b.
The brake interlocking valve 5b is a normally open valve; the shuttle valves 3a and 3b collect the outlets of the first interlocking valve 2a, the second interlocking valve 2b and the power take-off interlocking valve 5a together and are connected with the inlet of the brake interlocking valve 5 b.
The overrun safety interlock switch 6 is positioned in the cab, one end of the overrun safety interlock switch is connected with the air storage tank 1, and the other end of the overrun safety interlock switch is connected with a control port of the brake interlock valve 5 b.
The parking brake air source control valve 5c is a normally open valve, and a control port of the parking brake air source control valve is connected with an outlet of the brake interlocking valve 5b and used for controlling air source on-off of the brake air chamber 7.
When the chassis power takeoff is connected, the control port of the power takeoff interlocking valve 5a is inflated, the air of the air storage tank 1 passes through the power takeoff interlocking valve 5a, the shuttle valve 2 3b and the brake interlocking valve 5b to reach the control port of the parking brake air source control valve 5c, the control port of the parking brake air source control valve 5c is inflated, the parking brake air source is cut off, and the safety interlocking brake is caused.
When the vehicle-mounted equipment is opened, such as when a car roof armrest is pulled up, when a car door is opened, and an arm support stretches, the first interlocking valve 2a is sprung up, the parking brake air source control valve 5c controls the air inlet to cut off the parking brake air source, and safety interlocking braking is caused;
when the vehicle-mounted equipment is connected with an external device, such as a charger, a fire hose, a refueling rubber hose and the like, the second interlocking valve 2b is pressed down, the parking brake air source control valve 5c controls the opening air, the parking brake air source is cut off, and the safety interlocking brake is caused.
The vehicle-mounted equipment safety interlocking indicator lamp 4a is used for checking whether the vehicle-mounted equipment is reset (whether a roof is occupied or not), the external device safety interlocking indicator lamp 4b is used for checking whether the vehicle-mounted equipment is separated from an external device, and the power takeoff safety interlocking indicator lamp 4c is used for checking whether a power takeoff is disconnected or not, so that the safety of the vehicle is guaranteed.
When a safety accident occurs, the parking brake can be released only by opening the overrun safety interlocking switch 6 in the cab, and the vehicle can rapidly escape from the accident site.
Drawings
Fig. 1 is a schematic diagram of the technical scheme of the present utility model.
In the figure: the automatic control system comprises an air storage tank 1, an interlocking valve I2 a, an interlocking valve II 2b, a shuttle valve I3 a, a shuttle valve II 3b, a vehicle-mounted equipment safety interlocking indicator lamp 4a, an external device safety interlocking indicator lamp 4b, a power takeoff safety interlocking indicator lamp 4c, a power takeoff interlocking valve 5a, a brake interlocking valve 5b, a parking brake air source control valve 5c, an overrunning safety interlocking switch 6 and a brake air chamber 7.
Detailed Description
The technical scheme of the utility model is further described in detail below with reference to fig. 1.
(1) Safety interlock brake caused by pulling-up of vehicle-mounted equipment
When the worker opens the vehicle-mounted equipment, the first interlocking valve 2a bounces, and air passes through the first interlocking valve 2a, the shuttle valves 3a and 3b and the brake interlocking valve 5b, so that the parking brake air source control valve 5c controls the opening air, the parking brake air source is cut off, and the safety interlocking brake is caused.
(2) Connection of an on-board device to an external device causes a safety interlock brake
When the vehicle-mounted equipment is connected with an external device, the second interlocking valve 2b is pressed down, and air passes through the second interlocking valve 2b, the shuttle valves 3a and 3b and the brake interlocking valve 5b, so that the parking brake air source control valve 5c controls the opening air, the parking brake air source is cut off, and the safety interlocking brake is caused.
(3) Switching on the power take-off to cause safety interlocking braking
When the chassis power takeoff is connected, the power takeoff interlocking valve 5a controls the port to be inflated, and air passes through the power takeoff interlocking valve 5a, the shuttle valve 3b and the brake interlocking valve 5b, so that the parking brake air source control valve 5c controls the port to be inflated, and the parking brake air source is cut off, so that the safety interlocking brake is caused.
(4) Whole vehicle safety inspection
When the vehicle-mounted equipment is not reset, the first interlocking valve 2a bounces, and the safety interlocking indicator lamp 4a of the vehicle-mounted equipment is lightened; after the vehicle-mounted equipment is reset, the first interlocking valve 2a is pressed down, and the safety interlocking indicator lamp 4a of the vehicle-mounted equipment is extinguished; whether the vehicle roof is occupied or whether the vehicle-mounted device is reset or not can be judged by the indicator lamp 4 a.
When the vehicle-mounted equipment is connected with an external device, the second interlocking valve 2b is pressed down, and the safety interlocking indicator lamp 4b of the external device is lightened; when the vehicle-mounted equipment is separated from an external device, the second interlocking valve 2b is sprung, and the safety interlocking indicator lamp 4b of the external device is extinguished; whether the in-vehicle apparatus is separated from the external device can be judged by the external device safety interlock indicator lamp 4 b.
When the power takeoff is connected, the power takeoff interlocking valve 5a controls the opening to be inflated, and the power takeoff safety interlocking indicator lamp 4c is lightened; when the power take-off is disconnected, the control port of the power take-off interlocking valve 5a loses gas, and the power take-off safety interlocking indicator lamp 4c is turned off; whether the power take-off is disconnected or not can be judged by the indicator lamp 4 c.
(5) Safety escape of vehicle
When a safety accident occurs, the vehicle needs to rapidly escape from the scene, whether the vehicle-mounted equipment is reset, whether the vehicle-mounted equipment is separated from an external device or not and whether the power takeoff is disconnected can be rapidly checked according to the indicator lamps 4a, 4b and 4c, and then the parking brake can be released only by opening the overrun safety interlock switch 6 in the cab, so that the brake interlock valve 5b controls the opening to be air, and the parking brake air source control valve 5c controls the opening to be air-out.
Claims (4)
1. The utility model provides a special car safety interlocking pneumatic control system, including gas holder (1), interlock valve one (2 a), interlock valve two (2 b), shuttle valve one (3 a), shuttle valve two (3 b), vehicle equipment safety interlocking pilot lamp (4 a), external device safety interlocking pilot lamp (4 b), power takeoff safety interlocking pilot lamp (4 c), power takeoff interlock valve (5 a), braking interlock valve (5 b), parking braking air supply control valve (5 c), surpass safety interlock switch (6), brake chamber (7), its characterized in that: the inlet of the first interlocking valve (2 a) is connected with the air storage tank (1), and the outlet of the first interlocking valve is connected with the inlet P1 of the first shuttle valve (3 a); the inlet of the second interlocking valve (2 b) is connected with the air storage tank (1), and the outlet of the second interlocking valve is connected with the inlet P2 of the first shuttle valve (3 a); an inlet of the power takeoff interlocking valve (5 a) is connected with the air storage tank (1), and an outlet of the power takeoff interlocking valve is connected with an inlet P3 of the shuttle valve II (3 b); the shuttle valve I (3 a) and the shuttle valve II (3 b) are used for collecting outlets of the interlocking valve I (2 a), the interlocking valve II (2 b) and the power takeoff interlocking valve (5 a) together and are connected with an inlet of the braking interlocking valve (5 b); the control port of the parking brake air source control valve (5 c) is connected with the outlet of the brake interlocking valve (5 b) and used for controlling the air source on-off of the brake air chamber (7); one end of the overrunning safety interlocking switch (6) is connected with the air storage tank (1), and the other end of the overrunning safety interlocking switch is connected with a control port of the braking interlocking valve (5 b).
2. The special-purpose automotive safety interlock pneumatic control system of claim 1, wherein: when the vehicle-mounted equipment is pulled up, the control port of the parking brake air source control valve (5 c) can be enabled to be inflated, the parking brake air source is cut off, and safety interlocking braking is caused.
3. The special-purpose automotive safety interlock pneumatic control system of claim 1, wherein: when the vehicle-mounted equipment is connected with an external device, a control port of a parking brake air source control valve (5 c) can be controlled to be air, and a parking brake air source is cut off to cause safety interlocking braking.
4. The special-purpose automotive safety interlock pneumatic control system of claim 1, wherein: when the chassis power takeoff is connected, the control port of the parking brake air source control valve (5 c) can be controlled to be air, and the parking brake air source is cut off, so that the safety interlocking brake is caused.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223508984.3U CN218929440U (en) | 2022-12-28 | 2022-12-28 | Special automobile safety interlocking pneumatic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223508984.3U CN218929440U (en) | 2022-12-28 | 2022-12-28 | Special automobile safety interlocking pneumatic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218929440U true CN218929440U (en) | 2023-04-28 |
Family
ID=86066912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223508984.3U Active CN218929440U (en) | 2022-12-28 | 2022-12-28 | Special automobile safety interlocking pneumatic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218929440U (en) |
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2022
- 2022-12-28 CN CN202223508984.3U patent/CN218929440U/en active Active
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