CN-116988707-B - Car door safety control system

CN116988707BCN 116988707 BCN116988707 BCN 116988707BCN-116988707-B

Abstract

The invention relates to the technical field of vehicle door control systems, and provides a vehicle door safety control system which comprises a vehicle belt air source, an electromagnetic valve and a door opening and closing cylinder which are sequentially communicated, wherein a piston rod of the door opening and closing cylinder is used for connecting a vehicle door, the interior of a cylinder body of the door opening and closing cylinder is divided into a door opening cavity and a door closing cavity by means of a piston, the electromagnetic valve is communicated with the door opening cavity by means of a door opening air passage, and the electromagnetic valve is communicated with the door closing cavity by means of a door closing air passage. Through above-mentioned technical scheme, the structure of having solved door switch door system among the prior art is complicated, the poor problem of stability when frequently switching the door.

Inventors

YUAN LIXIONG
WANG HAIYANG
LI CHAOHUI
WANG YANQING
Yan Xuzhan

Assignees

格迈科技河北有限公司

Dates

Publication Date: 20260505
Application Date: 20230807

Claims (8)

1. The vehicle door safety control system is characterized by comprising a vehicle belt air source (1), an electromagnetic valve (2) and a door opening and closing cylinder (3) which are sequentially communicated, wherein a piston rod of the door opening and closing cylinder (3) is used for connecting a vehicle door, the interior of a cylinder body of the door opening and closing cylinder (3) is divided into a door opening cavity (4) and a door closing cavity (5) by virtue of a piston, the electromagnetic valve (2) is communicated with the door opening cavity (4) by virtue of a door opening air passage (6), and the electromagnetic valve (2) is communicated with the door closing cavity (5) by virtue of a door closing air passage (7); The electromagnetic valve (2) comprises a valve body (8), a reversing rod I (9) and a reversing rod II (10), wherein a total air inlet air channel (11) is preset in the valve body (8), the total air inlet air channel (11) is communicated with the vehicle belt air source (1), a reversing cavity (12) is arranged in the valve body (8), the reversing rod I (9) and the reversing rod II (10) are both slidingly arranged in the reversing cavity (12), a door opening air inlet (13) is arranged on the reversing rod I (9), a door closing air inlet (14) is arranged on the reversing rod II (10), the door opening air inlet (13) and the door closing air inlet (14) are both communicated with the total air inlet air channel (11), the reversing cavity (12) is provided with a door opening air outlet (15), a door opening air outlet (16), a door closing air outlet (17) and a door releasing air channel (18), the door opening air outlet (15) is communicated with the air channel (6), the door closing air outlet (17) is communicated with the door opening air outlet (7), and the door opening air inlet (16) is communicated with the door opening air channel (18) and the door opening air channel (6) is communicated with the outside. The reversing cavity (12) is internally provided with a door opening starting cavity (19) and a door closing starting cavity (20), the door opening starting cavity (19) is positioned on one side of the reversing rod II (10), the door closing starting cavity (20) is positioned on one side of the reversing rod I (9), and the electromagnetic valve (2) is provided with a door opening coil (21) and a door closing coil (22); After the door opening coil (21) is electrified, air is injected into the door opening starting cavity (19), the reversing rod I (9) and the reversing rod II (10) are pushed to synchronously move to one side of the door opening air outlet (15), the door opening air inlet (13) is communicated with the door opening air outlet (15), the door closing air outlet (17) is communicated with the door opening pressure relief air channel (16), and the door closing pressure relief air channel (18) is blocked by the reversing rod I (9); After the door closing coil (22) is electrified, air is injected into the door closing starting cavity (20), the reversing rod I (9) and the reversing rod II (10) are pushed to synchronously move to one side of the door closing air outlet (17), the door closing air inlet (14) is communicated with the door closing air outlet (17), the door opening air outlet (15) is communicated with the door closing pressure relief air channel (18), and the door opening pressure relief air channel (16) is blocked by the reversing rod II (10); The door opening anti-clamping system comprises an anti-clamping sensor I (23), an anti-clamping block I (24) and an anti-clamping coil (25), wherein a prefabricated air passage I (26), an anti-clamping cavity I (27), a pressure maintaining cavity I (28) and a prefabricated air passage II (29) are arranged in the valve body (8), the anti-clamping sensor I (23) is a normally closed sensor and is arranged in the anti-clamping cavity I (27), the anti-clamping block I (24) is slidably arranged in the anti-clamping cavity I (27) and is in magnetic attraction and abutting connection with a switch of the anti-clamping sensor I (23) so as to keep the anti-clamping sensor I (23) normally closed, and the anti-clamping block I (24) is positioned between the anti-clamping cavity I (27) and the pressure maintaining cavity I (28); one end of the first prefabricated air passage (26) is communicated with the first anti-pinch cavity (27), the other end of the first prefabricated air passage is communicated with the door opening air outlet (15) and is communicated with the door closing pressure relief air passage (18) in a door closing state, one end of the second prefabricated air passage (29) is communicated with the first pressure maintaining cavity (28), the other end of the second prefabricated air passage is communicated with the door closing air outlet (17) and is communicated with the door opening pressure relief air passage (16) in a door opening state, and flow speed regulating needle valves (30) are arranged in the first prefabricated air passage (26) and the second prefabricated air passage (29); An anti-pinch starting cavity (31) is arranged in the reversing cavity (12), the anti-pinch starting cavity (31) is positioned between the reversing rod I (9) and the reversing rod II (10), and the anti-pinch coil (25) is arranged on the electromagnetic valve (2); After the clamping prevention block I (24) is separated from the clamping prevention sensor I (23), the clamping prevention sensor I (23) is electrified to enable the clamping prevention coil (25) to be electrified, after the clamping prevention coil (25) is electrified, air is injected into the clamping prevention starting cavity (31), the reversing rod I (9) is pushed to move towards the door opening air outlet (15), the reversing rod II (10) is pushed to move towards the door closing air outlet (17) to enable the door opening air inlet (13) to be communicated with the door opening air outlet (15), and the door closing air inlet (14) is communicated with the door closing air outlet (17).
2. The vehicle door safety control system according to claim 1, further comprising a door closing anti-clamping system, wherein the door closing anti-clamping system comprises an anti-clamping sensor II (32) and an anti-clamping block II (33), the valve body (8) is internally provided with an anti-clamping cavity II (34), a pressure maintaining cavity II (35) and a prefabricated air channel III (36), the anti-clamping sensor II (32) is a normally closed sensor, the anti-clamping sensor II (34) is installed in the anti-clamping cavity II (33), and the anti-clamping block II (33) is slidably arranged in the anti-clamping cavity II (34) and is in magnetic attraction and abutting with a switch of the anti-clamping sensor II (32) for keeping the anti-clamping sensor II (32) normally closed, and the anti-clamping block II (33) is located between the anti-clamping cavity II (34) and the pressure maintaining cavity II (35); two ends of the prefabricated air channel III (36) are respectively communicated with the anti-clamping cavity I (27) and the pressure maintaining cavity II (35); and after the second anti-clamping block (33) is separated from and abutted against the second anti-clamping sensor (32), the second anti-clamping sensor (32) is electrified, so that the anti-clamping coil (25) is electrified.
3. A door safety control system according to claim 2, characterized in that a door closing breaking sensor (37) and a door opening breaking sensor (38) are mounted on the valve body (8), the door closing breaking sensor (37) is communicated with the pressure maintaining cavity one (28), and the door opening breaking sensor (38) is communicated with the anti-clamping cavity two (34).
4. The vehicle door safety control system according to claim 1, wherein two ends of the reversing cavity (12) are respectively communicated with a pneumatic door opening joint (39) and a pneumatic door closing joint (40), the pneumatic door opening joint (39) is located at one side of the reversing lever two (10), and the pneumatic door closing joint (40) is located at one side of the reversing lever one (9).
5. The vehicle door safety control system according to claim 1, further comprising a diverter valve (41), a forced reversing opening valve (42), a door opening starting valve (43) and a standby air source (44), wherein the vehicle belt air source (1), the diverter valve (41), the electromagnetic valve (2) and the door opening and closing cylinder (3) are sequentially communicated to form a normal air supply passage; The door opening starting valve (43) is characterized in that the input end of the door opening starting valve (43) is connected with the car belt air source (1), the output end of the door opening starting valve is simultaneously connected with the flow dividing valve (41) and the forced reversing opening valve (42), the input end of the standby air source (44) is connected with the car belt air source (1), the output end of the standby air source is simultaneously connected with the input end of the flow dividing valve (41) and the input end of the forced reversing opening valve (42), the output end of the forced reversing opening valve (42) is connected with the reversing cavity (12) to form a standby air supply passage, and the door opening starting valve (43) is used for switching a normal air supply passage and a standby air supply passage.
6. The vehicle door safety control system according to claim 1, wherein the door opening pressure release air passage (16) and the door closing pressure release air passage (18) are internally provided with pressure release adjusting needle valves (45).
7. The door safety control system according to claim 1, wherein the outlets of the door opening pressure relief air passage (16) and the door closing pressure relief air passage (18) are provided with a silencing valve (46).
8. A door safety control system according to claim 1, characterized in that the valve body (8) is provided with a low pressure sensor (47), the low pressure sensor (47) being in communication with the total inlet air circuit (11).

Description

Car door safety control system Technical Field The invention relates to the technical field of vehicle door control systems, in particular to a vehicle door safety control system. Background The doors of buses and buses are necessary channels for passengers to get on and off, passengers stay at the doors when the buses run or stop, and the door opening and closing frequency of the doors is high, so that the safety and stability requirements on a door opening and closing control system are high, the existing door opening and closing control system is complex in structure, difficult to install and generally high in cost, poor in stability under the working condition of frequent door opening and closing, and the maintenance and debugging cost is increased; In addition, because the door switching frequency is high, there is the possibility that passengers are injured when the door is opened or closed, and the anti-clamping technology of the existing door switching door control system is roughly divided into an airbag anti-clamping technology, a time-delay anti-clamping technology and a pressure sensor anti-clamping technology, but any anti-clamping technology has defects. The air bag anti-clamping force is small and sensitive, the problems that the adhesive tape leaks air or the adhesive tape is aged due to the environment, the anti-clamping performance is unstable when the air pressure value is changed, the door opening and the anti-clamping cannot be realized, the anti-clamping time delay is large, the reaction time is long, the door opening and the anti-clamping cannot be gradually eliminated, the air pressure value is required to be kept unchanged when the air pressure value is changed, and the door opening and the anti-clamping are difficult. The existing anti-pinch technology cannot meet the standard of a passenger car, once the passenger car cannot be opened after being pinched to a person in a dead zone, the passenger is pinched and injured to have potential safety hazards, and the existing door opening and closing electromagnetic valve cannot open the front door and the rear door simultaneously under the condition of no electricity and no air of the whole car. In view of the above problems, the prior art does not solve the problems well, and is troublesome for normal operation in the field, so that there is a need for a door safety control system with high safety and stability. Disclosure of Invention The invention provides a vehicle door safety control system, which solves the problems of complex structure and poor stability when a vehicle door is opened and closed frequently in the related art. The technical scheme includes that the vehicle door safety control system comprises a vehicle belt air source, an electromagnetic valve and a door opening and closing cylinder which are sequentially communicated, wherein a piston rod of the door opening and closing cylinder is used for connecting a vehicle door, the interior of a cylinder body of the door opening and closing cylinder is divided into a door opening cavity and a door closing cavity by means of a piston, the electromagnetic valve is communicated with the door opening cavity by means of a door opening air passage, and the electromagnetic valve is communicated with the door closing cavity by means of a door closing air passage; The electromagnetic valve comprises a valve body, a reversing rod I and a reversing rod II, wherein a total air inlet channel is preset in the valve body, the total air inlet channel is communicated with an air source of the vehicle belt, a reversing cavity is formed in the valve body, the reversing rod I and the reversing rod II are both arranged in the reversing cavity in a sliding mode, a door opening air inlet is formed in the reversing rod I, a door closing air inlet is formed in the reversing rod II, the door opening air inlet and the door closing air inlet are communicated with the total air inlet channel, the reversing cavity is provided with a door opening air outlet, a door opening air pressure relief channel, a door closing air outlet and a door closing air pressure relief channel, the door opening air outlet is communicated with the door opening air channel, the door opening air outlet is communicated with the door closing air channel, and the door opening air pressure relief channel is communicated with the outside; The reversing cavity is internally provided with a door opening starting cavity and a door closing starting cavity, the door opening starting cavity is positioned on one side of the reversing rod II, the door closing starting cavity is positioned on one side of the reversing rod I, and the electromagnetic valve is provided with a door opening coil and a door closing coil; After the door opening coil is electrified, gas is injected into the door opening starting cavity to push the reversing rod I and the reversing rod II to synchronously move to one side of the door opening gas outlet, the door openin