CN215922046U

CN215922046U - Semi-trailer

Info

Publication number: CN215922046U
Application number: CN202122356777.XU
Authority: CN
Inventors: 范文杰; 张玉文; 王芃
Original assignee: Weichai Power Co Ltd; Weichai New Energy Technology Co Ltd
Current assignee: Weichai Power Co Ltd; Weichai New Energy Technology Co Ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-03-01
Anticipated expiration: 2031-09-28

Abstract

The utility model relates to the field of vehicles, and discloses a semitrailer, wherein a safety barrier is indirectly established on two outer sides of the semitrailer in the width direction by utilizing a correlation type sensor, whether an obstacle exists in a visual blind area is quickly and accurately confirmed by whether a receiver receives a signal transmitted by a transmitter in the turning process of the semitrailer, so that emergency braking is conveniently carried out when the obstacle exists in the visual blind area, safety accidents caused by slow operation of a driver can be effectively avoided, and the accident probability is reduced to the maximum extent.

Description

Semi-trailer

Technical Field

The utility model relates to the field of vehicles, in particular to a semitrailer.

Background

The front of the semitrailer is asynchronous with the carriage in turning, the front of the semitrailer turns before the carriage, and the turning radii of the front of the semitrailer and the turning radii of the carriage are different, so that a driver cannot see all areas on two sides of a vehicle body through a rearview mirror in the turning process of the semitrailer, and visual blind areas exist.

For a common vehicle, a vehicle-mounted radar is usually mounted on the head or the tail of the vehicle to improve the driving safety; however, the vehicle-mounted radar cannot effectively identify the obstacles in the vision blind area of the semi-trailer, so that great potential safety hazards exist in the turning process of the semi-trailer.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a semitrailer, which can effectively identify obstacles in a vision blind area of the semitrailer so as to reduce the accident probability in the turning process of the semitrailer.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a semitrailer comprises a body, wherein the body comprises a head and a carriage, and the head can rotate relative to the carriage; the semitrailer still includes early warning device, early warning device includes:

two sets of correlation type sensors are located respectively the both sides of automobile body width direction, every correlation type sensor includes transmitter and receiver, one in transmitter and the receiver is located the locomotive lateral wall, another is located the carriage lateral wall:

the angle sensor is used for detecting the rotating angle of the vehicle head relative to the carriage;

a driving unit for driving one of the transmitter and the receiver to rotate according to the detection result of the angle sensor, so that the receiver of each correlation sensor can receive the signal transmitted by the transmitter;

and the alarm is used for prompting that a barrier exists in a visual blind area formed by the vehicle head and the carriage in the turning process of the semitrailer.

As an alternative to the above semi-trailer, the correlation sensor is an infrared sensor.

As an alternative to the above semi-trailer, the alarm may comprise at least one of an audible and visual alarm and a voice alarm.

As an alternative of the above semi-trailer, each group of the corresponding type sensors includes at least two corresponding type sensors, the corresponding type sensors have the emitters sequentially distributed at intervals from top to bottom, and the corresponding type sensors have the receivers sequentially distributed at intervals from top to bottom.

As an alternative of the above semi-trailer, two outer side walls in the width direction of the vehicle head are provided with outriggers, each outrigger is provided with the driving unit, and the transmitter is mounted at an output end of the driving unit.

As an alternative to the above-mentioned semitrailer, the outriggers are of equal width to the rear-view mirrors of the vehicle head.

As an alternative to the above-mentioned semitrailer, the outriggers are located below the rear-view mirrors of the locomotive.

As an alternative to the above-mentioned semitrailer, the output end of the drive unit is connected to a mounting plate, and the emitters of the same set of the correlation sensors are mounted to the same mounting plate.

As an alternative to the above-mentioned semitrailer, the drive unit comprises an electric motor and a gear transmission, the electric motor being connected to the mounting plate via the gear transmission.

As an alternative of the semitrailer, the semitrailer further comprises a steering lamp and a steering switch, wherein the steering switch is used for controlling the steering lamp to work synchronously with the correlation type sensor on the same side of the steering lamp.

The utility model has the beneficial effects that: according to the semi-trailer provided by the utility model, the opposite-emitting type sensors are utilized to indirectly establish a safety barrier at the two outer sides of the semi-trailer in the width direction, whether an obstacle exists in the visual blind area is quickly and accurately confirmed through whether the receiver receives a signal transmitted by the transmitter in the turning process of the semi-trailer, so that the emergency braking is conveniently carried out when the obstacle exists in the visual blind area, the safety accident caused by the slow operation of a driver can be effectively avoided, and the accident probability is reduced to the maximum extent.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a front view of a semitrailer in accordance with an embodiment of the present invention;

fig. 2 is a top view of a semitrailer in accordance with an embodiment of the present invention.

In the figure:

11. a headstock; 12. a carriage; 13. a vehicle control unit;

21. a transmitter; 22. a receiver; 23. an angle sensor; 24. an alarm.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

As shown in fig. 1 and fig. 2, the present embodiment provides a semitrailer, including locomotive 11, carriage 12 and early warning device, wherein, locomotive 11 can rotate for carriage 12, and early warning device includes two sets of correlation type sensors, and two sets of correlation type sensors are located carriage 12 width direction's both sides respectively, and every set of correlation type sensor includes at least one correlation type sensor, and every correlation type sensor includes transmitter 21 and receiver 22, and locomotive 11 is located to one in transmitter 21 and the receiver 22, and the afterbody of carriage 12 is located to another.

In the present embodiment, the correlation sensor is, but not limited to, an infrared sensor, and the transmitter 21 and the receiver 22 of each correlation sensor are located on the same straight line, so that the receiver 22 can receive the signal transmitted by the transmitter 21 when there is no obstacle between the transmitter 21 and the receiver 22. When the receiver 22 cannot receive the signal transmitted by the transmitter 21, it indicates that an obstacle exists between the transmitter 21 and the receiver 22. The infrared sensor is not affected by weak light at night, and the practicability is improved.

In order to simplify the installation of the correlation sensor, the present embodiment has the transmitter 21 installed on the outer side wall in the width direction of the vehicle head 11 and the receiver 22 installed on the outer side wall in the width direction of the vehicle compartment 12. In order to improve the detection accuracy of the correlation sensor, the transmitter 21 is mounted at the head of the vehicle head 11, and the receiver 22 is mounted at the rear of the vehicle body 12.

Because the driving position of semitrailer is higher, in order to avoid the correlation type sensor to set up too high so that whether there is the barrier in the vision blind area that can not effectively detect the semitrailer turn in-process, this embodiment locates emitter 21 in the rear-view mirror below of locomotive 11, every correlation type sensor of group includes two at least correlation type sensors, the emitter 21 interval distribution in proper order from top to bottom of correlation type sensor of the same group, receiver 22 interval distribution in proper order from top to bottom of correlation type sensor of the same group. Illustratively, each set of correlation sensors includes three correlation sensors.

In order to further improve the detection accuracy of the correlation sensor, outriggers are mounted on two outer side walls in the width direction of the vehicle head 11, the width of each outrigger is equal to that of a rearview mirror of the vehicle head 11, and the emitter 21 is mounted on each outrigger, so that the emitter 21 mounted on each outrigger is positioned on the outer side of the rearview mirror, and whether an obstacle exists in a visual blind area in the turning process can be accurately and effectively detected by the correlation sensor. In this embodiment the outrigger is located below the rear view mirror so that the transmitter 21 on the outrigger is located below the rear view mirror.

In order to avoid that the receiver 22 cannot receive the signal transmitted by the transmitter 21 because the head 11 and the carriage 12 are not synchronous when the semitrailer turns, the early warning device further comprises an angle sensor 23 and a driving unit, wherein the angle sensor 23 is used for detecting the rotation angle of the head 11 relative to the carriage 12; the driving unit is used for driving one of the transmitter 21 and the receiver 22 to rotate according to the detection result of the angle sensor 23, so that the receiver 22 can receive the signal transmitted by the transmitter 21.

In this embodiment, each outrigger is provided with a driving unit, the output end of the driving unit is connected with a mounting plate, the emitters 21 of the same group of correlation sensors are mounted on the mounting plate, and each emitter 21 does not need to be provided with a driving unit, so that the cost of the semitrailer is reduced.

The driving unit comprises a motor and a gear transmission piece, and the motor is connected to the mounting plate through the gear transmission piece. The gear transmission part is mainly used for reducing the speed of the motor so that the rotating speed of the mounting plate meets the requirement. In other embodiments, the driving unit may also have other structures, including a cylinder and a nut-screw assembly, the cylinder is fixedly mounted on the outrigger, a piston rod of the cylinder is connected to one of the nut and the screw, and the other of the nut and the screw is connected to the mounting plate, so as to achieve rotation of the mounting plate.

The early warning device further comprises an alarm 24 for prompting that obstacles exist in a visual blind area formed by the head 11 and the carriage 12 in the turning process of the semitrailer. Illustratively, the alarm 24 includes at least one of an audible and visual alarm and a voice alarm. In this embodiment, the alarm 24 is a voice alarm.

Furthermore, the semitrailer further comprises a steering lamp and a steering switch, wherein the steering switch is used for controlling the steering lamp to synchronously work with the corresponding sensor positioned on the same side, so that the structure is simplified, the cost is reduced, a driver does not need to control the switch of the early warning device, and no influence is brought to the operation of the driver.

The angle detection unit, the driving unit, the correlation sensor and the alarm 24 are electrically connected to the vehicle control unit 13 of the semitrailer. When a driver controls a steering switch, a steering lamp and a correlation sensor which is positioned on the same side with the steering lamp are started, an angle sensor 23 monitors the rotating angle of the vehicle head 11 relative to the carriage 12 in real time and feeds a detection signal back to the vehicle control unit 13, the vehicle control unit 13 controls the driving unit to drive the transmitter 21 to rotate reversely by a corresponding angle, the transmitter 21 and the receiver 22 of each correlation sensor are ensured to be positioned on the same straight line, and the receiver 22 can receive the signal transmitted by the corresponding transmitter 21. When the receiver 22 cannot receive the signal transmitted by the corresponding transmitter 21, it is confirmed that a barrier enters the blind vision zone and blocks the signal transmitted by the transmitter 21, at this time, the alarm 24 is triggered to send out a prompt and forcibly enable the braking device of the semitrailer to brake the vehicle emergently, and then a driver can observe the type of the barrier through human eyes to further operate, so that the probability of occurrence of accidents is reduced to the maximum extent.

The semitrailer that this embodiment provided has add early warning device, utilizes correlation type sensor indirectly to establish a safety barrier in semitrailer width direction's two outsides, whether the semitrailer turn in-process receives the signal of transmitter 21 transmission through receiver 22 and confirms whether have the barrier in the vision blind area fast accurately to carry out emergency braking when having the barrier in the vision blind area, can effectively avoid taking place the incident because of driver's operation delay.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. A semitrailer comprises a body, which comprises a vehicle head (11) and a carriage (12), wherein the vehicle head (11) can rotate relative to the carriage (12); characterized in that, the semitrailer still includes early warning device, early warning device includes:

the two groups of correlation sensors are respectively positioned on two sides of the width direction of the vehicle body, each correlation sensor comprises a transmitter (21) and a receiver (22), one of the transmitter (21) and the receiver (22) is arranged on the outer side wall of the vehicle head (11), and the other one of the transmitter (21) and the receiver (22) is arranged on the outer side wall of the carriage (12);

an angle sensor (23) for detecting an angle of rotation of the vehicle head (11) relative to the vehicle compartment (12);

a driving unit for driving one of the transmitter (21) and the receiver (22) to rotate according to the detection result of the angle sensor (23), so that the receiver (22) of each correlation type sensor can receive the signal transmitted by the transmitter (21);

and the alarm (24) is used for prompting that obstacles exist in a visual blind area formed by the vehicle head (11) and the carriage (12) in the turning process of the semitrailer.

2. A semitrailer according to claim 1, characterised in that said correlation sensor is an infrared sensor.

3. A semitrailer according to claim 1, characterised in that said alarm (24) comprises at least one of an audible and visual alarm and a voice alarm.

4. A semitrailer according to claim 1, characterised in that each group of said correlation sensors comprises at least two said correlation sensors, said emitters (21) of said correlation sensors of the same group being sequentially spaced from top to bottom, and said receivers (22) of said correlation sensors of the same group being sequentially spaced from top to bottom.

5. A semitrailer according to claim 4, characterised in that the two outer side walls of the locomotive (11) in the width direction are provided with outriggers, each outrigger being provided with the drive unit, the transmitter (21) being mounted at the output of the drive unit.

6. A semitrailer according to claim 5, characterised in that the outriggers are of equal width to the rear-view mirrors of the vehicle head (11).

7. A semitrailer according to claim 5, characterised in that the outriggers are located below the rear-view mirrors of the vehicle head (11).

8. A semitrailer according to claim 5, characterised in that a mounting plate is connected to the output of the drive unit, the emitters (21) of the same set of said correlation sensors being mounted on the same mounting plate.

9. A semitrailer according to claim 8, characterised in that the drive unit comprises an electric motor and a gear drive, the electric motor being connected to the mounting plate via the gear drive.

10. A semitrailer according to any one of claims 1 to 9, characterised by further comprising a steering lamp and a steering switch for controlling said steering lamp to operate in synchronism with said correlation sensor on the same side as said steering lamp.