CN113815528B

CN113815528B - Emergency stop warning sign device capable of being automatically placed and recovered

Info

Publication number: CN113815528B
Application number: CN202110801322.6A
Authority: CN
Inventors: 吴昌旭
Original assignee: Xinxing Technology Hangzhou Co ltd
Current assignee: Xinxing Technology Hangzhou Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2023-07-11
Anticipated expiration: 2041-07-15
Also published as: CN113815528A

Abstract

The invention discloses an emergency stop warning board device capable of being automatically placed and recovered, which comprises a storage box, a recovery device and a trolley; wherein the release and recovery of the warning sign are realized by two schemes. One is to open the warning board through a damping spring shaft, and to recycle the warning board through a recycling line and a recycling line rotating shaft, and the other is to release and recycle the warning board through a threaded screw rod. For vehicles driven by people, the device can reduce the personal safety risk that the driver walks on dangerous motor vehicles lanes to place and recover the warning marks when the driver comes out of the vehicle. For the automatic driving vehicle containing unmanned delivery truck, the device can enable the automatic driving vehicle to automatically place and recover the warning sign board of the fault vehicle, enlarge the warning distance and improve the road traffic safety.

Description

Emergency stop warning sign device capable of being automatically placed and recovered

Technical Field

The invention relates to the field of emergency stop warning sign placement, in particular to an emergency stop warning sign device capable of being automatically placed and recycled.

Background

For a manned vehicle, it is risky for the driver to walk out of the vehicle to place and retrieve the warning sign on the dangerous motor vehicle lane. According to traffic safety advice, after the vehicle breaks down, the driver should withdraw from the vehicle and the motor vehicle lane as soon as possible, so as to avoid collision of the rear vehicle. However, manually placing and retrieving warning signs necessarily prolongs the time that a person stays and walks on a dangerous motor vehicle lane.

For automatic driving vehicles (including unmanned delivery vehicles), the vehicles only stop or approach the roadside under the current technical conditions, but no automatic driving vehicle can automatically place and recover the fault vehicle warning signpost at present.

Therefore, the invention designs an automatic placement and recovery system for the warning sign board of the fault vehicle to solve the common problems of the manned vehicle and the unmanned vehicle.

In the invention, a standard fault car warning sign board (which can be added with light and the like to enhance the warning effect) meeting the national standard is used, and the national standard that the height of the chassis of the trolley and wheels is more than or equal to 5 cm is matched.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an emergency stop warning sign device capable of being automatically placed and recovered.

The aim of the invention is realized by the following technical scheme: an emergency stop warning sign device capable of being automatically placed and recovered comprises a storage box, a recovery device and a trolley;

the storage box is arranged at the bottom of the vehicle, and is provided with an electric door which is provided with a movable shaft, a side plate and an electric door micro switch; the side plates are used for restraining the direction of the trolley when the trolley is recovered, the electric door is provided with a bulge, and the bulge is used for jacking up a curved bar of the trolley in the process of releasing and recovering the triangular warning board; the movable shaft is internally provided with a motor and is connected with a release switch of the device which is arranged in the vehicle; the electric door micro switch controls the electric door to be closed;

the recovery device is positioned in the storage box and comprises a recovery coil, a recovery wire, a motor for recovering the coil and a power supply for the motor for recovering the coil; the recovery coil is wound with a recovery wire, and the other end of the recovery wire is connected to the trolley; the power supply of the recovery coil motor is connected with the recovery coil motor, and the recovery coil motor rotates to control the recovery coil;

the trolley is provided with a curved bar component, a trolley chassis, a trolley micro switch, a trolley wheel sub power supply and a delay circuit, a trolley front wheel motor, a trolley front wheel and a trolley rear wheel; the curved rod assembly comprises a curved rod, a spring, a base and a curved rod bottom bulge; the curved rod passes through the small hole of the trolley chassis to be arranged on the base, and the spring is positioned between the base of the curved rod and the trolley chassis and is sleeved on the curved rod; the bottom of the curved bar is protruded to act with the protrusion of the electric door together to lift the base in the moving process of the trolley and touch the trolley micro switch, the trolley micro switch controls the trolley wheel sub power supply and the delay circuit, the trolley wheel sub power supply and the delay circuit are connected with the trolley front wheel motor, and the trolley front wheel motor is arranged on the rotating shaft of the trolley front wheel; and the trolley chassis is rotationally connected with a triangular warning board.

Further, the process of opening the micro switch of the trolley by the combined action of the protrusion at the bottom of the bent rod and the protrusion of the electric door can be replaced by an electro-optical system or a wireless control system.

Further, the release and the recovery of the triangular warning sign are realized through the bulges on the upper part of the curved bar and the damping spring shaft, and the release and the recovery are specifically as follows: the top of the triangular warning board is connected with a recovery line, and the recovery line is connected to a recovery coil in the storage box through a recovery line rotating shaft arranged on the trolley; the upper bulge of the curved bar is fixed at the upper end of the curved bar and is used for buckling the triangular warning board when the triangular warning board is not released; the damping spring shaft is used for rotationally connecting the triangular warning board on the chassis of the trolley; when the crank bottom bulge and the electric door bulge jointly act to lift the crank base, the upper bulge of the crank is lifted, so that the triangular warning board is released, and the triangular warning board is lifted after a few seconds under the action of the damping spring shaft, so that the triangular warning board is prevented from being clamped under the chassis of the vehicle.

Further, the release and the recovery of the triangular warning sign are realized through a screw rod, and specifically: the trolley is provided with an electric wire, a motor for controlling the screw rod with a delay circuit, a gear of the screw rod, the screw rod with threads and a rotating point fixing plate; the electric wire and the recovery wire are twisted and then wound on the recovery coil, the twisted wire is connected to the rear end of the chassis of the trolley, and the electric wire in the twisted wire is connected with a motor of a control screw rod with a delay circuit in the trolley and a motor of a front wheel of the trolley; the motor of the control screw rod with the delay circuit is connected with the trolley wheel sub-power supply and the delay circuit, and the triangular warning board is rotationally connected to the trolley chassis through a rotating shaft of the triangular warning board; the gear of the screw rod is connected with a motor for controlling the screw rod with a delay circuit, and one end of the screw rod with threads is movably connected with a rotating point fixing plate; the gear of the screw rod is in threaded engagement with the threaded screw rod, and when the gear of the screw rod rotates, the screw rod moves upwards or downwards.

Further, the triangular warning board fixer is arranged on the chassis of the trolley and used for limiting and stabilizing the released triangular warning board.

Further, the emergency stop warning board device comprises a release switch and a recovery switch, wherein the release switch is connected with the motor of the moving shaft, and the recovery switch is connected with a power supply of the recovery coil motor.

Further, a release switch and a recovery switch placed inside the vehicle may be controlled by the driver or by an automatic driving system, which may be mounted on a remote control, and the driver may withdraw the vehicle before remotely controlling the whole device to reduce the time of stay in the faulty vehicle and on the motor vehicle's motor vehicle lane.

Further, all wires inside the device may be realized by physical wires or by wireless means.

Further, the trolley of the device can be added with a counterweight, and other fixing devices are optionally arranged so that the triangular warning board is not blown over or deflected by wind, rain, snow and the like after being released, but the fixing devices are ensured not to prevent the recycling of the triangular warning board. The triangular warning sign can be selectively provided with a light and sound system to increase the probability of being found by the rear vehicles and personnel.

The invention has the beneficial effects that:

for vehicles driven by people, the device can reduce the personal safety risk that the driver walks on dangerous motor vehicles lanes to place and recover the warning marks when the driver comes out of the vehicle. After the vehicle is out of order, the driver can withdraw the vehicle immediately after stopping the vehicle, and then the system can automatically place the warning sign by pressing the release switch of the system or the switch in the vehicle by remote control. When the driver wants to drive the vehicle again, the driver does not need to get off to the dangerous motor vehicle lane to recycle the warning board, and after the recycling switch of the system is pressed, the system can recycle the warning board automatically, so that the safety degree of the driver and the rear vehicle is improved.

For an automatic driving vehicle (including an unmanned delivery truck), the device can enable the automatic driving vehicle to automatically place and recover the warning sign board of the fault vehicle, enlarge the warning distance and improve the traffic safety of roads.

Drawings

FIG. 1 is a flowchart showing a device release process according to embodiment 1 of the present invention;

FIG. 2 is a flow chart of the recovery process of the device in example 1 of the present invention.

FIG. 3 is a flow chart showing the release process of the device according to the embodiment 2 of the present invention (the triangular warning sign is released by the mechanical device including the protrusion of the curved lever and the protrusion of the electric door);

FIG. 4 is a flow chart of the recycling process of the device (the triangular warning sign is released by sending a control signal through a wireless control system or an optoelectronic system) in the embodiment 2 of the present invention;

FIG. 5 is a flow chart of the recovery process by wireless or wired control of the device according to embodiment 2 of the present invention;

FIG. 6 is a side view of the device of example 1 of the present invention in a collapsed condition within a storage case;

FIG. 7 is a schematic view of the release process of the device in embodiment 1 of the present invention, wherein after the protrusion of the curved bar touches the protrusion of the electric door, the curved bar is lifted to release the buckled triangular warning sign, and the triangular warning sign is gradually erected after the damping spring acts on the triangular warning sign;

FIG. 8 is a schematic diagram of the embodiment 1 device of the present invention after release, showing the state of opening the triangular warning sign after the damping spring acts on the device;

FIG. 9 is a schematic view of the device of example 1 of the present invention during recovery, showing the triangular warning sign being buckled by lifting the curved lever after the protrusion of the curved lever hits the protrusion of the power door;

FIG. 10 is a top view of the device of example 1 of the present invention in a folded state;

FIG. 11 is a top view of the device of example 1 of the present invention in a released state;

FIG. 12 is a side view of the device of embodiment 2 of the present invention in a collapsed condition within a storage case;

FIG. 13 is a schematic view of the device in embodiment 2 of the present invention during the release process, wherein after the protrusion of the curved lever touches the protrusion of the electric door, the curved lever base touches the micro switch of the trolley, and then the triangular warning sign is jacked up by the screw rod;

FIG. 14 is a schematic view of the device of embodiment 2 of the present invention after release, showing the status of the warning sign of the failure vehicle due to the lifting of the screw;

FIG. 15 is a schematic view of the device of embodiment 2 of the present invention during recovery, wherein the crank base touches the trolley micro-switch after the protrusion of the crank touches the protrusion of the electric door, and the trolley sub-power is turned off;

FIG. 16 is a top view of the device of example 2 of the present invention in a folded state;

FIG. 17 is a top view of the device of example 2 of the present invention in a released state;

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the drawings.

The invention provides an emergency stop warning board device capable of being automatically placed and recycled, wherein the release and recycling of a warning board are realized through two schemes. One is to open the warning board through a damping spring shaft, and to recycle the warning board through a recycling line and a recycling line rotating shaft, and the other is to release and recycle the warning board through a threaded screw rod. The specific scheme is as follows:

example 1

As shown in fig. 6 and 10, the present invention provides an emergency stop warning sign device capable of being automatically mounted and recovered, which comprises a storage box 18, a recovery device and a trolley;

the storage box 18 is arranged at the bottom of the vehicle, the storage box 18 is provided with an electric door 17, and the electric door 17 is provided with an electric door moving shaft 16, a side plate 19 and an electric door micro switch 20; the side plates 19 are used for restraining the direction of the trolley when the trolley is recovered, the electric door 17 is provided with a bulge 15, and the bulge is used for jacking the curved bar 1 of the trolley in the process of releasing and recovering the triangular warning board; the electric door moving shaft 16 is internally provided with a motor or other components capable of enabling the electric door to rotate, and the emergency stop warning board device comprises a release switch 33, wherein the release switch 33 is connected with the motor of the electric door moving shaft 16; the electric door micro switch 20 controls the closing of the electric door; the projection 15 on the door 17 and the trolley's bar bottom projection 5 require the ability to touch and lift the bar until the triangle is released and the trolley's movement is not hindered.

The recovery device is positioned in the storage box and comprises a recovery coil 22, a recovery wire 24, a motor 23 for recovering the coil and a power supply 21 for the motor for recovering the coil; the recovery coil 22 is wound with a recovery wire 24, wherein a power supply 21 of a motor of the recovery coil is connected with a motor 23 of the recovery coil, and the motor 23 of the recovery coil rotates to control the recovery coil 22; the emergency stop warning sign device comprises a recovery switch 34 arranged in the vehicle, and the recovery switch 34 is connected with a power supply 21 of a recovery coil motor. The recovery switch 34 includes a delay circuit.

The trolley comprises a curved bar component, a trolley rear wheel 6, a triangular warning board 7, a damping spring shaft 8, a triangular warning board fixer 9, a trolley chassis 10, a trolley micro-switch 11, a trolley wheel sub-power supply and delay circuit 12, a trolley front wheel motor 13, a trolley front wheel 14 and a recovery line rotating shaft 25; the top of the triangular warning board 7 is provided with a recovery line rotating shaft 25 which is connected with a recovery line 24 of the recovery device; the bent rod assembly comprises a bent rod 1, a bent rod upper protrusion 2, a spring 3, a base 4 and a bent rod bottom protrusion 5; the upper bulge 2 of the curved bar is used for buckling the triangular warning board 7 when the triangular warning board 7 is not released; the curved rod 1 passes through a small hole of the trolley chassis 10 to be arranged on the base 4, and the spring 3 is positioned between the base 4 and the trolley chassis 10 and sleeved on the curved rod 1; the bottom protrusion 5 of the curved bar is used for lifting the curved bar by coacting with the protrusion 15 of the electric door during the movement of the trolley, so as to release and recycle the triangular warning board 7, and the process can be replaced by a photoelectric system or other electronic systems. The trolley micro switch 11 controls a trolley wheel sub-power supply and a delay circuit 12, the trolley wheel sub-power supply and the delay circuit 12 are connected with a trolley front wheel motor 13, and the trolley front wheel motor 13 is arranged on a rotating shaft of a trolley front wheel 14; the triangular warning board 7 is arranged on the trolley chassis 10 through a damping spring shaft 8; the triangular warning board fixer 9 is used for limiting and stabilizing the released triangular warning board 7.

As shown in fig. 1, 7, 8 and 11, the automatic release and placement process of the cart and the triangular warning board in the embodiment is as follows:

1) When the vehicle stops moving, the release switch 33 of the device is started by a driver or an automatic control system of the vehicle, and the release switch 33 controls the motor or other components capable of rotating the electric door in the electric door shaft 16 to open the electric door 17. After the electric door 17 is opened, the cart slides down with inertia.

2) In the process that the trolley slides down along with inertia, when the protrusion 5 at the bottom of the bent rod of the trolley touches the protrusion 15 of the electric door, the following two actions are performed simultaneously:

the action is that firstly, the crank rod 1 is lifted, the triangular warning board 7 is slowly released after a few seconds of acting force of the damping spring shaft 8 is acted on and gradually rises up to the position of the triangular warning board fixer 9, and the triangular warning board is prevented from being clamped under the chassis of the vehicle

And the base 4 of the curved lever is lifted, the base 4 contacts the trolley micro switch 11, the trolley micro switch 11 turns on the trolley sub power supply and the delay circuit 12, the trolley front wheel motor 13 drives the trolley front wheel 14 to rotate until the trolley runs a certain distance, such as 100 meters, to the rear of the vehicle, the distance meets the specific traffic regulation requirement, and the delay circuit turns off the wheel power supply of the trolley. The triangle warning board 7 is placed.

As shown in fig. 2 and 9, the recovery process of the cart and the triangular warning board in the embodiment is as follows:

1) After the recovery switch 34 of the device is turned on by a driver or an automatic control system of the vehicle, the power supply 21 of the recovery coil motor is turned on, the motor 23 of the recovery coil rotates to control the recovery coil 22 so as to pull the recovery line 24, the recovery line 24 pulls the trolley from the placement position to the vicinity of the electric door 17, and in the recovery process, the top of the triangular warning board 7 is gradually recovered to the near original position after the recovery line 24 is pulled downwards through the recovery line rotating shaft 25.

2) When the trolley returns to the position of the electric door 17, the side plates 19 of the electric door will restrict the recovery direction of the trolley so that its tail is facing the device of the invention. The tail part of the side plate 19 is made into an inclined plane near the tail end of the electric door, which is beneficial to the recovery of the trolley.

3) When the protrusion 5 at the bottom of the bent rod of the trolley touches the protrusion 15 of the electric door in the recovery process, the bent rod is lifted again, and the triangular warning board 7 is buckled by the protrusion 2 on the bent rod again under the tensile force of the recovery line.

4) Finally, after the front end of the cart touches the door microswitch 20, the microswitch will trigger the door to be closed by rotating the door by a motor or other member contained in the door shaft 16.

Example 2

As shown in fig. 12 and 16, the present invention provides an emergency stop warning sign device capable of being automatically mounted and recovered, which comprises a storage box 18, a recovery device and a cart;

the storage box 18 is arranged at the bottom of the vehicle, the storage box 18 is provided with an electric door 17, and the electric door 17 is provided with an electric door moving shaft 16, a side plate 19 and an electric door micro switch 20; the side plates 19 are used for restraining the direction of the trolley when the trolley is recovered, the electric door 17 is provided with a bulge 15, and the bulge is used for jacking the curved bar 1 of the trolley in the process of releasing and recovering the triangular warning board; the electric door moving shaft 16 is internally provided with a motor or other components capable of enabling the electric door to rotate, and the emergency stop warning board device comprises a release switch 33, wherein the release switch 33 is connected with the motor of the electric door moving shaft 16; the electric door micro switch 20 controls the closing of the electric door; the projection 15 on the door 17 and the trolley's bottom projection 5 require the ability to touch and lift the base of the trolley until the trolley's microswitch is triggered and the trolley's movement is not impeded.

The recovery device is positioned in the storage box and comprises a recovery coil 22, a recovery wire 24, an electric wire 32, a motor 23 of the recovery coil and a power supply 21 of the motor of the recovery coil; the recovery coil 22 is wound with a recovery wire 24, wherein a power supply 21 of a motor of the recovery coil is connected with a motor 23 of the recovery coil, and the motor 23 of the recovery coil rotates to control the recovery coil 22; the electric wire 32 and the recovery wire 24 are twisted to form a twisted wire which is wound around the recovery coil 22, and the other end of the twisted wire is connected to the rear end of the dolly chassis 10. The emergency stop warning board device comprises a recovery switch 34, and the recovery switch 34 is connected with a power supply 21 of a recovery coil motor. The recovery switch 34 includes a delay circuit.

The trolley comprises a curved bar component, a trolley rear wheel 6, a triangular warning board 7, a rotating shaft 26 of the triangular warning board, a triangular warning board fixer 9, a trolley chassis 10, a trolley micro switch 11, a trolley wheel sub power supply and delay circuit 12, a trolley front wheel motor 13, a trolley front wheel 14, a motor 27 of a control screw rod with a delay circuit, a gear 28 of the screw rod, a screw rod 29 with threads, a rotating point 30 for connecting the top of the screw rod with a fixed plate and a rotating point fixed plate 31; the bent rod assembly comprises a bent rod 1, a spring 3, a base 4 and a bent rod bottom bulge 5; the curved rod 1 passes through a small hole of the trolley chassis 10 to be arranged on the base 4, and the spring 3 is positioned between the base 4 and the trolley chassis 10 and sleeved on the curved rod 1; the bottom protrusion 5 of the curved bar is used for lifting the curved bar by coacting with the protrusion 15 of the electric door during the movement of the trolley, so as to release and recycle the triangular warning board 7, and the process can be replaced by a photoelectric system or other electronic systems. The motor 27 of the control screw rod with the delay circuit is connected with the trolley wheel power supply and the delay circuit 12, and the rotating point fixing plate 31 is connected with the triangle warning board 7 through the rotating point 30 which is connected with the top of the screw rod and the fixing plate; the triangular warning board 7 is rotatably connected to the trolley chassis 10 through a rotating shaft 26 of the triangular warning board; the gear 28 of the screw rod is connected with the motor 27 of the control screw rod with a delay circuit, and one end of the screw rod 29 with threads is fixedly connected with the rotating point fixing plate 31; the gear 28 of the screw rod is in threaded engagement with the threaded screw rod 29, and when the gear 28 of the screw rod rotates, an upward or downward movement of the screw rod is achieved. The trolley micro switch 11 controls a trolley wheel sub-power supply and a delay circuit 12, the trolley wheel sub-power supply and the delay circuit 12 are connected with a trolley front wheel motor 13, and the trolley front wheel motor 13 is arranged on a rotating shaft of a trolley front wheel 14. The wires 32 in the twine connect the motor 27 of the control screw with delay circuit in the trolley and the trolley front wheel motor 13.

As shown in fig. 3, 13, 14 and 17, the automatic release and placement process of the cart and the triangle warning board in the embodiment is as follows:

1) When the vehicle stops moving, the release switch 33 of the device is started by a driver or an automatic control system of the vehicle, and the release switch 33 controls the motor or other components capable of rotating the electric door in the electric door shaft 16 to open the electric door. After the electric door 17 is opened, the cart slides down with inertia.

2) In the process that the trolley slides down along with inertia, when the bottom boss 5 of the bent rod of the trolley touches the boss 15 of the electric door: firstly, the crank 1 is lifted, the base 4 of the crank is lifted, the base 4 touches the trolley micro switch 11, and the trolley micro switch 11 is started to carry out the following 2 devices: the first device, the sub-power supply of the trolley and the delay circuit 12, the front wheel of the trolley starts to rotate until the trolley runs a certain distance, such as 100 meters, to the rear of the vehicle, the distance is in accordance with the specific traffic regulation requirement, and the delay circuit turns off the wheel power supply of the trolley; in the second device, the motor 27 with a delay circuit for controlling the screw rod starts to rotate the gear 28 of the screw rod after the micro switch 11 of the trolley is started for a few seconds, so that the triangular warning board is prevented from being clamped under the chassis of the vehicle, and the gear 28 of the screw rod enables the screw rod 29 with threads to move upwards through the threads on the screw rod to jack up the rotating point fixing plate 31 of the triangular warning board 7 until the triangular warning board 7 reaches a proper angle. The triangle warning board 7 is placed.

In this embodiment, after the release switch 33 of the device is turned on by the driver or the automatic control system of the vehicle, the above 2 devices can be turned on simultaneously by wireless or wired means, so that the protrusion of the crank lever and the protrusion on the electric door can be omitted. The specific process is shown in fig. 4.

As shown in fig. 5 and 15, the recovery process of the cart and the triangular warning board in the embodiment is as follows:

1) After a driver or an automatic control system of the vehicle turns on a recovery switch 34 of the device, a power supply 21 of a recovery coil motor is turned on, a motor 23 of the recovery coil rotates to control the recovery coil 22 so as to pull a folded wire of a recovery wire 24 and an electric wire 32, the electric wire 32 is connected with a motor 27 of a control screw rod with a delay circuit in a trolley and a trolley front wheel motor 13, and the folded wire pulls the trolley from a placing position to the vicinity of an electric door and drives the trolley front wheel motor 13 to recover the trolley. In the recovery process, a motor 27 for controlling the screw rod with a delay circuit starts to work, a gear 28 of the screw rod is rotated, the gear 28 of the screw rod enables the screw rod to move downwards through threads on the screw rod, and therefore the triangular warning board 7 is recovered, and the triangular warning board 7 is parallel to the trolley. The trolley is also gradually retracted by the retraction wire 24 to a position close to the electric door.

2) When the trolley returns to the electric door position, the side plates 19 of the electric door will restrict the recovery direction of the trolley so that its tail is facing the recovery device. The tail part of the side plate 19 is made into an inclined plane near the tail end of the electric door, which is beneficial to the recovery of the trolley.

3) When the protrusion 5 at the bottom of the curved bar of the trolley touches the protrusion 15 of the electric door in the recycling process, the curved bar is lifted again, the base 4 of the curved bar is lifted, the base 4 touches the trolley micro switch 11 again, and the trolley micro switch turns off the trolley wheel power supply of the trolley.

The above-described embodiments are intended to illustrate the present invention, not to limit it, and any modifications and variations made thereto are within the spirit of the invention and the scope of the appended claims.

Claims

1. An emergency stop warning sign device capable of being automatically placed and recovered is characterized by comprising a storage box, a recovery device and a trolley;

the storage box is arranged at the bottom of the vehicle, and is provided with an electric door which is provided with a movable shaft, a side plate and an electric door micro switch; the side plates are used for restraining the movement direction of the trolley when recycling, and the electric door is provided with a bulge which is used for jacking up a curved bar of the trolley in the process of releasing and recycling the triangular warning board; the movable shaft is internally provided with a motor and is connected with a release switch arranged in the vehicle; the electric door micro switch controls the electric door to be closed;

the recovery device is positioned in the storage box and comprises a recovery coil, a recovery wire, a motor for recovering the coil and a power supply for the motor for recovering the coil; the recovery coil is wound with a recovery wire, and the other end of the recovery wire is connected to the trolley; the power supply of the recovery coil motor is connected with the recovery coil motor, and the recovery coil motor rotates to control the rotation of the recovery coil;

the trolley is provided with a curved bar component, a trolley chassis, a trolley micro switch, a trolley wheel sub power supply and a delay circuit, a trolley front wheel motor, a trolley front wheel and a trolley rear wheel; the curved rod assembly comprises a curved rod, a spring, a base and a curved rod bottom bulge; the curved rod passes through the small hole of the trolley chassis to be arranged on the base, and the spring is positioned between the base of the curved rod and the trolley chassis and is sleeved on the curved rod; the bottom of the curved bar is protruded to act with the protrusion of the electric door together to lift the base in the moving process of the trolley and touch the trolley micro switch, the trolley micro switch controls the trolley wheel sub power supply and the delay circuit, the trolley wheel sub power supply and the delay circuit are connected with the trolley front wheel motor, and the trolley front wheel motor is arranged on the rotating shaft of the trolley front wheel; the chassis of the trolley is rotationally connected with a triangular warning board; the release and the recovery of the triangular warning sign are realized through the bulge on the upper part of the curved bar and the damping spring shaft, and specifically: the top of the triangular warning board is connected with a recovery line, and the recovery line is connected to a recovery coil in the storage box through a recovery line rotating shaft arranged on the trolley; the upper bulge of the curved bar is fixed at the upper end of the curved bar and is used for buckling the triangular warning board when the triangular warning board is not released; the damping spring shaft is used for rotationally connecting the triangular warning board on the chassis of the trolley; when the crank bottom bulge and the electric door bulge jointly act to lift the crank base, the upper bulge of the crank is lifted, so that the triangular warning board is released, and the triangular warning board is lifted after a few seconds under the action of the damping spring shaft, so that the triangular warning board is prevented from being clamped under the chassis of the vehicle.

2. An emergency stop warning sign device capable of being automatically placed and recovered is characterized by comprising a storage box, a recovery device and a trolley;

the trolley is provided with a curved bar component, a trolley chassis, a trolley micro switch, a trolley wheel sub power supply and a delay circuit, a trolley front wheel motor, a trolley front wheel and a trolley rear wheel; the curved rod assembly comprises a curved rod, a spring, a base and a curved rod bottom bulge; the curved rod passes through the small hole of the trolley chassis to be arranged on the base, and the spring is positioned between the base of the curved rod and the trolley chassis and is sleeved on the curved rod; the bottom of the curved bar is protruded to act with the protrusion of the electric door together to lift the base in the moving process of the trolley and touch the trolley micro switch, the trolley micro switch controls the trolley wheel sub power supply and the delay circuit, the trolley wheel sub power supply and the delay circuit are connected with the trolley front wheel motor, and the trolley front wheel motor is arranged on the rotating shaft of the trolley front wheel; the chassis of the trolley is rotationally connected with a triangular warning board; the release and the recovery of the triangular warning sign are realized through a screw rod, and specifically: the trolley is provided with an electric wire, a motor for controlling the screw rod with a delay circuit, a gear of the screw rod, the screw rod with threads and a rotating point fixing plate; the electric wire and the recovery wire are twisted and then wound on the recovery coil, the twisted wire is connected to the rear end of the chassis of the trolley, and the electric wire in the twisted wire is connected with a motor of a control screw rod with a delay circuit in the trolley and a motor of a front wheel of the trolley; the motor of the control screw rod with the delay circuit is connected with the trolley wheel sub-power supply and the delay circuit, and the triangular warning board is rotationally connected to the trolley chassis through a rotating shaft of the triangular warning board; the gear of the screw rod is connected with a motor for controlling the screw rod with a delay circuit, and one end of the screw rod with threads is movably connected with a rotating point fixing plate; the gear of the screw rod is in threaded engagement with the screw rod with threads, and when the gear of the screw rod rotates, the screw rod moves upwards or downwards; when the micro switch of the trolley is triggered, the motor with the delay circuit for controlling the screw rod can lift the screw rod after a few seconds, so that the triangular warning sign is prevented from being clamped under the chassis of the trolley.

3. An automatic placement and retrieval emergency stop sign device according to claim 1 or 2, wherein a triangular sign holder is mounted on the cart chassis for limiting and stabilizing the released triangular sign.

4. An automatic placement and retrieval emergency stop sign assembly according to claim 1 or 2, wherein the emergency stop sign assembly includes a release switch and a retrieval switch disposed within the vehicle, the release switch being connected to the motor of the shaft and the retrieval switch being connected to the power supply of the retrieval coil motor.

5. An automatic setting and retrieving emergency stop warning sign device according to claim 4, characterized in that the release switch and the retrieving switch set in the vehicle interior are controlled by the driver or by the automatic driving system, which are installed on the remote control, and the driver withdraws the vehicle and then remotely controls the whole device to reduce the stay time in the faulty vehicle and in the motor vehicle on the motor vehicle.

6. An emergency stop sign device capable of automatic placement and retrieval according to claim 1 or 2, wherein all wires inside the device are realized by physical wires or by wireless means.

7. An emergency stop warning sign device capable of being automatically placed and recovered according to claim 1 or 2, wherein the trolley of the device is provided with an obstacle avoidance system for avoiding obstacles on the travelling path.

8. An automatically placed and retrieved emergency stop sign device according to claim 1 or 2, wherein the device's trolley is added with a counterweight and other fixing means are installed so that the triangle sign is not knocked down or deflected by the wind and rain after release, but ensuring that these fixing means do not interfere with the retrieval of the triangle sign; the triangular warning sign is provided with a light and sound system to increase the probability of being found by the rear vehicles and people.