Combined intelligent floating arc mirror for blind area of truck

Abstract

The utility model discloses a combined type intelligent floating arc mirror for the dead zone of truck, including rearview mirror and wide-angle mirror, rearview mirror includes rearview mirror body and is used for supporting the mirror frame of rearview mirror body, the mirror frame is also equipped with the power pack that can drive rearview mirror body to move along the mirror frame, the wide-angle mirror is equipped with the wide-angle mirror, and the wide-angle mirror is equipped with the rearview mirror body. A controller for controlling the starting and stopping states of the power pack is also arranged in a cab of the truck; the rearview mirror body is internally provided with a main view lens and a first outer floating lens which are integrally formed; the wide-angle lens comprises a wide-angle lens body and a supporting rod used for supporting the wide-angle lens. A wide-angle lens and a second outward-floating lens which are integrally formed are arranged in the wide-angle lens body. The combined intelligent floating arc mirror is installed at the installation position of an existing wide-angle mirror, the use requirement can be met, operation and use are convenient, traffic accidents are greatly reduced, multiple purposes can be achieved through one mirror, and the combined intelligent floating arc mirror is high in practicability and suitable for application and popularization.

Description

TECHNICAL FIELD

[0001] The utility model relates to big truck rear -view mirror technical field, concretely relates to a combined type intelligent arc mirror for big truck blind area. BACKGROUND

[0002] With the rapid development of economy, the automobile is increasingly popular in our country, and the automobile rear -view mirror is located at the left and right sides of the automobile head and the front of the automobile interior. The automobile rear -view mirror reflects the situation behind, side and below the automobile, so that the driver can indirectly see the situation of these positions, which plays the role of "second eye" and expands the field of view of the driver. As the main traffic transport tool of modern civilized society, the automobile not only facilitates people's travel, but also brings certain disturbance to human beings. At present, the endless rear -view mirror products are used on the automobile, and it is still impossible to avoid accidents. Due to the popularity of the vehicle body radar of ordinary cars, many drivers are prone to relax when driving, and it is more likely to cause accidents when driving in the blind area that cannot be seen by feeling and randomly changing lanes. Therefore, only by finding a breakthrough in the automobile blind spot and making the blind spot bright, the eyes of all drivers can be illuminated, so as to reduce traffic accidents.

[0003] Especially the big truck in the driving process, since the vehicle body of the big truck is generally long, when observing by using the rear -view mirror, since the existing automobile rear -view mirror will have a certain blind area, the rear -view mirror can only observe the position of the rear part of the two sides of the automobile, if a vehicle or a person appears in the blind area of the rear -view mirror, it is easy to cause a safety accident. At the same time, since the big truck is relatively high, the field of view of the driver is limited, and a part of the scene in front of the driver cannot enter the field of view of the driver, forming a blind area. Since the A column on the left side and the right side also brings a blind area to the driver. In the case of turning, etc., this phenomenon is more serious, and sometimes it can lead to serious traffic accidents. In extreme cases, for example, in the process of turning the big truck, the pedestrian will always be in the blind area and not be found by the driver, so that the pedestrian may be directly hit by the automobile. Therefore, it has very important practical significance to eliminate the blind area brought by the A column, and the blind area structure principle diagram formed by the big truck is shown in Figure 1

[0004] Due to the characteristics of high vehicle body, large volume and long wheelbase of the big truck, there is a large blind area in the driving process, and the blind area is mainly concentrated in the positions of the vehicle head, the vehicle tail and the rear -view mirror side, and the blind area of the driver's view is larger when turning and reversing, so that traffic accidents are very easy to occur. In order to reduce traffic accidents, therefore, in order to reduce the occurrence of danger, the current big truck is provided with multiple rear -view mirrors and wide -angle mirrors. Therefore, if all the blind areas formed by the big truck can be eliminated, the driving safety can be greatly enhanced, and the traffic accidents can be reduced.

[0005] ​There are still limitations in using the existing rearview mirror, and the driver needs to observe the rearview mirror and wide-angle mirror from different angles during driving, and still drives by feeling for the blind area that cannot be seen. Through retrieval, the patent literature with the authorization announcement number CN106314271B discloses a device for warning the edge of the blind area of a large truck, the patent literature with the authorization announcement number CN213676512U discloses a large truck blind area monitoring device, and the patent literature with the authorization announcement number CN203511469U discloses a multi-angle adjustable automobile rearview mirror capable of eliminating the blind area. It can be known from the three pieces of literature retrieved that monitoring devices meeting the use requirements are respectively provided from different angles. In order to avoid safety accidents caused by the blind area of the rearview mirror, a combined intelligent arc mirror different from the combined intelligent arc mirror disclosed in the prior art is provided. The arc mirror is a lens that is outwardly arc-shaped on the outer side of the existing rearview mirror, which is referred to as an outer arc lens. The rearview mirror using the outer arc lens is referred to as an arc mirror, which uses the arc mirror to replace the existing rearview mirror and wide-angle mirror, so as to meet the use requirements. Practical new type content

[0006] The technical problem to be solved by the utility model is that, in view of the problems in the background art, a simple structure, easy installation and operation arc mirror is provided. The arc mirror replaces the existing rearview mirror and wide-angle mirror, and has the same installation position and direction as the existing wide-angle mirror. The driver can maintain the original habit without needing to divide the line of sight to watch the road conditions on the side and rear. Since other facilities do not need to be added outside the vehicle, the appearance and performance of the vehicle are not affected. The use requirements can be met, and traffic accidents can be reduced. Specifically, the utility model discloses a combined intelligent arc mirror for the blind area of a large truck.

[0007] In order to solve the above technical problem, the utility model adopts the technical scheme that a combined intelligent arc mirror for the blind area of a large truck, including rearview mirror and wide-angle mirror, the rearview mirror includes rearview mirror body and mirror frame for supporting the rearview mirror body, and a power pack for driving the rearview mirror body to move along the mirror frame is arranged in the mirror frame, and a controller for controlling the start and stop state of the power pack is arranged in the cab of the large truck. A main mirror lens and a first outer arc lens are integrally arranged in the rearview mirror body. The wide-angle mirror includes a wide-angle mirror body and a support rod for supporting the wide-angle mirror. A wide-angle lens and a second outer arc lens are integrally arranged in the wide-angle mirror body.

[0008] Further, the combined intelligent arc mirror for the blind area of a large truck, the first outer arc lens is a circular arc structure, the circular arc is a minor arc with a central angle of 12-18 degrees, the first outer arc lens is arranged outside the main mirror lens in the rearview mirror body, and the main mirror lens and the first outer arc lens form an integral structure.

[0009] Further, the utility model discloses a combined type intelligent floating arc mirror for blind area of large truck, the first outer floating lens is arranged on the outside of the main lens in the outwardly inclined state, the width of the main lens is two thirds of the overall width of the rear view mirror, and the width of the first outer floating lens is one third of the overall width of the rear view mirror.

[0010] Further, the utility model discloses a combined type intelligent floating arc mirror for blind area of large truck, the mirror frame is composed of the frame structure of four connecting rods, one sliding slot is equipped in the upper and lower two connecting rods of the mirror frame respectively, and the telescopic joint is equipped in the sliding slot, and the rear view mirror body is slidably connected with the mirror frame through the telescopic joint.

[0011] Further, the utility model discloses a combined type intelligent floating arc mirror for blind area of large truck, two wide-angle mirror bodies are equipped, and the two wide-angle mirror bodies are arranged in the support rod in the perpendicular state, and one telescopic mechanism is further installed on the frame outside the left and right sides of the large truck cab respectively, the telescopic mechanism is connected with the support rod, and the telescopic mechanism is electrically connected with the controller.

[0012] Further, the utility model discloses a combined type intelligent floating arc mirror for blind area of large truck, the second outer floating lens is the arc body structure, the arc body is the inferior arc of the central angle of 12-18 degrees, the second outer floating lens is arranged in the wide-angle mirror body along the outside of the wide-angle lens and constitutes an integral structure with the wide-angle lens.

[0013] Further, the utility model discloses a combined type intelligent floating arc mirror for blind area of large truck, the second outer floating lens is arranged on the outside of the wide-angle lens in the outwardly inclined state, the width of the wide-angle lens is two thirds of the overall width of the wide-angle mirror body, and the width of the second outer floating lens is one third of the overall width of the wide-angle mirror body.

[0014] Further, the utility model discloses a combined type intelligent floating arc mirror for blind area of large truck, the controller is the controller that has the PLC control system inbuilt, and the input end of the controller is electrically connected with the existing large truck control system through the wire, and the output end is electrically connected with the power pack and telescopic mechanism respectively through the wire.

[0015] Further, the utility model discloses a combined type intelligent floating arc mirror for blind area of large truck, the telescopic mechanism is any one in electric control telescopic rod or hydraulic actuating cylinder, the support rod is installed on the frame outside the large truck cab through the electric control telescopic rod or hydraulic actuating cylinder, and the electric control telescopic rod or hydraulic actuating cylinder is electrically connected with the controller.

[0016] The intelligent floating mirror has the advantages that it is installed at the installation position of the rearview mirror and the wide-angle mirror of the existing large truck, compared with the rearview mirror and the wide-angle mirror in the existing large truck, the driver can keep the original habit without needing to disperse the sight to watch the road condition at the side rear, since other facilities do not need to be added outside the vehicle, the appearance and performance of the vehicle are not affected, the use requirement can be met, the operation and use are facilitated, the traffic accidents are greatly reduced, the structure is simple, the installation is facilitated, the large truck is suitable for various vehicle types, the practicability is high, and the application is suitable for promotion. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further explained in detail in combination with the drawings.

[0018] Figure 1 It is the forming principle structure schematic view of the existing large truck blind area;

[0019] Figure 2 It is the structure schematic view of the rearview mirror in the utility model;

[0020] Figure 3 It is the structure schematic view when the rearview mirror in the utility model extends outward;

[0021] Figure 4 It is the structure schematic view of the wide-angle mirror in the utility model;

[0022] Figure 5 It is the circuit control structure block diagram of the controller in the utility model;

[0023] Figure 6 It is the structure schematic view of the existing large truck blind area distribution area.

[0024] As shown in the figure: 1-rearview mirror body, 11-main mirror, 12-first outer floating mirror, 2-mirror frame, 21-slotted, 22-telescopic joint, 3-power package, 4-controller, 5-wide-angle mirror body, 51-wide-angle mirror, 52-second outer floating mirror, 6-supporting rod extension, 7-telescopic mechanism. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments in the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model. Embodiment 1

[0026] As Figures 2 to 5As shown, the embodiment provides a combined intelligent arc mirror for large truck blind area, which comprises a rearview mirror and a wide-angle mirror. The rearview mirror comprises a rearview mirror body 1 and a mirror frame 2 for supporting the rearview mirror body 1. A power pack 3 is arranged in the mirror frame 2 and can drive the rearview mirror body 1 to move along the mirror frame 2. A controller 4 is arranged in the cab of the large truck and controls the start and stop of the power pack 3. A main mirror 11 and a first outer arc mirror 12 are integrally formed in the rearview mirror body 1. The wide-angle mirror comprises a wide-angle mirror body 5 and a support rod 6 for supporting the wide-angle mirror. A wide-angle mirror 51 and a second outer arc mirror 52 are integrally formed in the wide-angle mirror body 5. Two wide-angle mirror bodies 5 are arranged in the support rod 6 in a perpendicular state. A telescopic mechanism 7 is arranged on the frame outside the cab of the large truck. The telescopic mechanism 7 is connected with the support rod 6 and is electrically connected with the controller 4. The controller 4 is a controller with a PLC control system. The input end of the controller 4 is electrically connected with the existing control system of the large truck through wires. The output end of the controller 4 is electrically connected with the power pack 3 and the telescopic mechanism 7 through wires.

[0027] Further, the first outer arc mirror 12 is a circular arc structure with a central angle of 12-18 degrees. The first outer arc mirror 12 is arranged outside the main mirror 11 in the rearview mirror body 1 and forms an integral structure with the main mirror 11. The second outer arc mirror 52 is a circular arc structure with a central angle of 12-18 degrees. The second outer arc mirror 52 is arranged outside the wide-angle mirror 51 in the wide-angle mirror body 5 and forms an integral structure with the wide-angle mirror 51.

[0028] Further, the mirror frame 2 is composed of four connecting rods in a frame structure. A sliding groove 21 is arranged in each of the upper and lower connecting rods of the mirror frame 2. A telescopic joint 22 is arranged in the sliding groove. The rearview mirror body 1 is slidably connected with the mirror frame 2 through the telescopic joint 22. The power pack 3 is installed at the sliding groove 21. The rearview mirror body 1 can be driven by the power pack 3 to move left and right in the mirror frame 2 through the telescopic joint 22.

[0029] Further, the telescopic mechanism 7 is any one of an electric control telescopic rod or a hydraulic actuator cylinder. The support rod 6 is installed on the frame outside the cab of the large truck through the electric control telescopic rod or the hydraulic actuator cylinder. The electric control telescopic rod or the hydraulic actuator cylinder is electrically connected with the controller 4. Embodiment 2

[0030] In order to make the blind area of the left and right sides of the truck more clear and convenient for the driver to observe, the combined intelligent arc mirror is used, the first outer arc mirror 12 is arranged outside the main mirror 11 in an outward inclined state, the width of the main mirror 11 is two-thirds of the overall width of the rearview mirror body 1, and the width of the first outer arc mirror 12 is one-third of the overall width of the rearview mirror body 1. The second outer arc mirror 52 is arranged outside the wide-angle mirror 51 in an outward inclined state, the width of the wide-angle mirror 51 is two-thirds of the overall width of the wide-angle mirror body 5, and the width of the second outer arc mirror 52 is one-third of the overall width of the wide-angle mirror body 5.

[0031] In the specific preparation and installation process, the main mirror 11 and the first outer arc mirror 12, and the wide-angle mirror 51 and the second outer arc mirror 52 can be made into an integral structure according to the existing mirror, and the circular arc body of the first outer arc mirror 12 and the second outer arc mirror 52 is only required to have a central angle of 15 degrees. In the installation process, the first outer arc mirror 12 and the second outer arc mirror 52 can be installed at the installation position of the existing truck rearview mirror and wide-angle mirror, and by setting the first outer arc mirror 12 and the second outer arc mirror 52 as a circular arc body with an angle of 15 degrees, all blind areas in front of the vehicle and on the left and right sides can be observed more clearly, the situation that the vehicle behind cannot be seen due to driving too close to the vehicle in front can be avoided, and the safety hidden danger caused by random lane changing and door opening can be prevented, so that the driving safety can be greatly improved.

[0032] The combined intelligent arc mirror uses the power pack 3 which is a commonly used power device in the prior art, and can select the same power device as the telescopic mechanism 7, such as an electric control telescopic rod or a hydraulic actuator cylinder. Since no modification is made to the structure, no detailed description is made, and the power pack 3 can also select a commonly used power device in the prior art. As long as the power device is miniaturized, the purpose is to facilitate installation, use and control, and no specific model is required. As long as the power device can be matched with the controller 4 and meet the use requirements, the power device can be used.

[0033] The telescopic joint 22 installed in the sliding groove 21 can select a telescopic structure composed of three telescopic pipes in the specific manufacturing process. The output end of the power pack 3 is connected with the last telescopic pipe of the three telescopic pipes, and the front end of the last telescopic pipe is connected with the rearview mirror body 1. When it is required to be extended outward, the second telescopic pipe moves in the first telescopic pipe and the third telescopic pipe moves in the second telescopic pipe under the action of the power pack 3, and finally the third telescopic pipe drives the rearview mirror body 1 to move, so as to realize the telescopic function of the rearview mirror body 1. The telescopic joint 22 can also select a commonly used telescopic structure in the prior art, as long as the telescopic structure can meet the use requirements. Embodiment 3

[0034] The embodiment discloses the use method of the intelligent floating mirror for the blind area of a large truck, and the use method comprises three stages of starting, normal driving and turning of the large truck, and the specific use method comprises the following steps:

[0035] S1. When the large truck starts, the telescopic mechanism 7 is started through the controller 4, the support rod 6 and the wide-angle mirror body 5 are driven to extend forward by 40-60 cm through the telescopic mechanism 7, the driver can clearly observe the blind area of the E blind area and 80% of the blind area of the D blind area through the wide-angle mirror extending forward and the two rearview mirrors installed outside the cab, in addition to the visual field area of the A area and the B area outside the vehicle body and the visual field area of the C blind area in front of the vehicle body; when the vehicle speed reaches 30 km / h, the telescopic mechanism 7 is controlled through the controller 4, so that the extended wide-angle mirror is automatically retracted and returned to the original position;

[0036] S2. During normal driving of the large truck, it is assumed that the vehicle speed exceeds 30 km / h for normal driving, and the area formed by the D blind area on the left and right sides of the vehicle body is enlarged when the large truck is driving normally, at this time, the rearview mirror body 1 is driven to extend outward along the mirror frame 2 by 15-20 cm through the installation package 3 started through the controller 4, and the driver can clearly observe the area of the D blind area on the left and right sides of the vehicle body through the first outer floating lens 12;

[0037] S3. During turning of the large truck, when turning, it is assumed that the vehicle speed is below 30 km / h, the turn signal is turned on first, and the control device 4 is activated by using the power supply of the turn signal, the telescopic mechanism 7 is started through the controller 4, the support rod 6 and the wide-angle mirror body 5 are driven to extend forward by 40-60 cm through the telescopic mechanism 7, the driver can clearly observe the C blind area in front of the vehicle body, the D blind area formed by the inside wheel difference of the rear side of the vehicle body, the visual field area of the A area and the B area outside the vehicle body, and all the areas of the E blind area through the wide-angle mirror extending forward and the two rearview mirrors installed outside the cab, so that the safety condition of the vehicle tail can be observed from the vehicle head, and when the turning is completed and the vehicle enters the normal driving process, the telescopic mechanism 7 is controlled through the controller 4, so that the extended wide-angle mirror is automatically retracted and returned to the original position, without affecting the driving safety.

[0038] Especially for the long truck, the blind area formed by the inner wheel difference is also larger, and due to the high truck body, the blind area formed in front of the cab is also larger, in order to distinguish the blind area of different parts, the position of each blind area is described, wherein the A area refers to the field of view area formed between the rearview mirror and the right A column blind area, the B area refers to the field of view area formed between the rearview mirror and the left A column blind area, the C blind area refers to the field of view area in front of the cab, the D blind area refers to the field of view blind area formed between the rearview mirror and the rear side of the vehicle body, and the E area refers to the field of view blind area formed by the right A column blind area and the left A column blind area, and the specific distribution structure of each blind area is as shown in Figure 6 .

[0039] The combined intelligent arc mirror has the advantages that the main mirror piece 11 and the first outer arc mirror piece 12 are integrally formed in the rearview mirror body 1, the main mirror piece 11 is a normal mirror piece and can be used for observing a normal visual field, the first outer arc mirror piece 12 on the outer side can be used for observing whether there is a vehicle following on the left and right sides, dynamic observation is realized, and safety hazards caused by random lane changing and sudden opening of a door are avoided, the power pack 3 is arranged and used for driving the rearview mirror body 1 to move outward along the vehicle, the driver can clearly observe the fatal blind area outside the vehicle by observing the main mirror piece 11 and the first outer arc mirror piece 12 on the left and right sides, the wide-angle mirror is arranged, the wide-angle mirror piece 51 and the second outer arc mirror piece 52 are integrally formed in the wide-angle mirror body 5, the two wide-angle mirror bodies 5 are arranged in a perpendicular state in the supporting rod 6, the telescopic mechanism 7 is arranged and used for driving the wide-angle mirror body 5 to move forward and backward, the wide-angle mirror piece 51 and the second outer arc mirror piece 52 on the left and right sides can be used for clearly observing the C blind area and the E blind area on the front side of the vehicle body, and thus observation of all fatal blind areas outside the vehicle is realized, the existing rearview mirror and wide-angle mirror in the truck are replaced by the rearview mirror and the wide-angle mirror, all blind areas caused by starting, turning and factors of super width and super length of the truck can be solved, and the intelligent arc mirror is suitable for trucks of various vehicle types.

[0040] It can be seen that the intelligent arc mirror is installed at the mounting position of the existing rearview mirror and wide-angle mirror in the truck, compared with the existing rearview mirror and wide-angle mirror in the truck, the driver can keep the original habit and does not need to pay attention to the road conditions on the side rear, other facilities do not need to be added outside the vehicle, the appearance and performance of the vehicle are not affected, the use requirement can be met, operation and use are facilitated, traffic accidents are greatly reduced, the structure is simple, installation is facilitated, the intelligent arc mirror is suitable for trucks of various vehicle types, is strong in practicability, and is suitable for popularization and application.

[0041] The other parts not described in detail in the utility model are conventional technologies known by those skilled in the art, and thus are not described in detail.

[0042] The protection scope of the utility model is not only limited to the technical scheme disclosed by the specific embodiment, the above is only the preferred embodiment of the utility model, and does not limit the utility model, and any slight modification, equivalent replacement and improvement according to the technical scheme of the utility model should be contained in the protection scope of the technical scheme of the utility model.

Claims

1. A combined intelligent floating mirror for blind area of large truck, comprising a rearview mirror and a wide-angle mirror, characterized in that: The rearview mirror comprises a rearview mirror body (1) and a mirror frame (2) for supporting the rearview mirror body (1), a power pack (3) for moving the rearview mirror body (1) along the mirror frame (2) is arranged in the mirror frame (2), and a controller (4) for controlling the start and stop of the power pack (3) is arranged in the cab of the truck; the rearview mirror body (1) is provided with a main mirror (11) and a first outer mirror (12) which are integrally formed; the wide-angle mirror comprises a wide-angle mirror body (5) and a supporting rod (6) for supporting the wide-angle mirror; the wide-angle mirror body (5) is provided with a wide-angle mirror (51) and a second outer mirror (52) which are integrally formed; the first outer mirror (12) is in the form of a circular arc body with a central angle of 12-18 degrees, the first outer mirror (12) is arranged outside the main mirror (11) in the rearview mirror body (1) and forms an integral structure with the main mirror (11); the first outer mirror (12) is arranged outside the main mirror (11) in an outwardly inclined state, the width of the main mirror (11) is two-thirds of the overall width of the rearview mirror body (1), and the width of the first outer mirror (12) is one-third of the overall width of the rearview mirror body (1).

2. A combination intelligent floating mirror for blind area of large truck according to claim 1, characterized in that: The mirror frame (2) is formed by four connecting rods, a sliding groove (21) is arranged in each of the upper and lower connecting rods of the mirror frame (2), and an expansion joint (22) is arranged in the sliding groove (21), the rearview mirror body (1) is connected to the mirror frame (2) through the expansion joint (22); the power pack (3) is installed at the sliding groove (21), and the rearview mirror body (1) can be moved left and right in the mirror frame (2) along the sliding groove (21) under the action of the power pack (3).

3. A combination intelligent floating mirror for blind area of large truck according to claim 2, characterized in that: The wide-angle mirror body (5) is provided with two wide-angle mirror bodies (5) which are arranged in the supporting rod (6) in a perpendicular state; an expansion mechanism (7) is arranged on each of the left and right sides of the frame of the cab of the truck, the expansion mechanism (7) is connected to the supporting rod (6), and the expansion mechanism (7) is electrically connected to the controller (4).

4. A combination intelligent wrap-around mirror for a large truck blind spot according to claim 3, characterized in that: The second outer mirror (52) is in the form of a circular arc body with a central angle of 12-18 degrees, the second outer mirror (52) is arranged outside the wide-angle mirror (51) in the wide-angle mirror body (5) and forms an integral structure with the wide-angle mirror (51).

5. A combination intelligent wrap-around mirror for blind spot of large truck according to claim 4, characterized in that: The second outer mirror (52) is arranged outside the wide-angle mirror (51) in an outwardly inclined state, the width of the wide-angle mirror (51) is two-thirds of the overall width of the wide-angle mirror body (5), and the width of the second outer mirror (52) is one-third of the overall width of the wide-angle mirror body (5).

6. A combination intelligent wrap-around mirror for a large truck blind spot according to claim 5, wherein: The controller (4) is a controller with a PLC control system built-in, the input end of the controller (4) is electrically connected to the existing control system of the truck through wires, and the output end of the controller (4) is electrically connected to the power pack (3) and the expansion mechanism (7) through wires.

7. A combination intelligent wrap-around mirror for a large truck blind spot according to claim 6, wherein: The telescopic mechanism (7) is any one of an electric telescopic rod or a hydraulic actuating cylinder, the support rod (6) is installed on the frame outside the cab of the truck through the electric telescopic rod or the hydraulic actuating cylinder, and the electric telescopic rod or the hydraulic actuating cylinder is electrically connected with the controller (4).

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