An automatic telescopic side protection device suitable for a freight train and the freight train

Abstract

The application relates to an automatic telescopic side protection device suitable for a truck train and the truck train, and belongs to the technical field of vehicles. The automatic telescopic side protection device suitable for the truck train comprises a side protection main body which is arranged between a tractor and a trailer. The side protection main body is configured to change its length following the angle of the tractor relative to the trailer. The application embodiment provides an automatic telescopic side protection device suitable for a truck train and the truck train. The side protection main body is arranged, the side protection main body changes its length following the angle of the tractor relative to the trailer, and then the side protection length can be automatically adjusted when the tractor turns, interference with the trailer is avoided, the vehicle body structure is effectively protected from damage, meanwhile, a pedestrian or a vehicle is prevented from entering the vehicle bottom through the gap between the tractor and the trailer, a rolling accident is avoided, and the vehicle and the pedestrian are protected and buffered.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to an automatic retractable side protection device and a freight train applicable to freight trains. Background Technology

[0002] Currently, relevant departments have established standards and regulations for vehicle side protection devices, namely GB 11567-2017 "Requirements for Side and Rear Underrun Protection of Motor Vehicles and Trailers". However, there are no relevant requirements for the gap at the connection point between truck trains. Truck trains are long and have large blind spots, making it difficult to detect pedestrians or vehicles after a collision. With the increasingly widespread use of truck trains, the side protection devices at the connection point between the tractor and trailer urgently need to be strengthened.

[0003] In related technologies, a truck-trailer combination is a combination of a truck and a drawbar trailer or a center-axle trailer. This includes drawbar trailer combinations (combinations of trucks and drawbar trailers), center-axle trailer combinations (combinations of trucks and center-axle trailers), and articulated trailers (combinations of a tractor and a semi-trailer, also including combinations of light vehicles and recreational semi-trailers). A large space is reserved between the tractor and the trailer to match the turning radius, and there are currently no suitable protective devices between the tractor and the trailer.

[0004] While existing rigid fixed side guards can meet the protection function, they can only ensure that the vehicle travels in a straight line. During the turning of a truck train, the horizontal side clearance between the tractor and trailer can vary from 0.5 to 2.5 meters. Installing rigid fixed side guards cannot meet the needs of the constantly changing clearance. At the same time, if the rigid fixed side guards are set too long, they will interfere with the rear trailer during turning and prevent the vehicle from turning. If the guards are set too short, they will not provide any protection. Summary of the Invention

[0005] This application provides an automatic telescopic side protection device and a freight train suitable for freight trains, in order to solve the problem of interference during turning at the connection position of freight trains in related technologies.

[0006] The first aspect of this application provides an automatic retractable side protection device suitable for freight trains, comprising:

[0007] A side protection body, which is disposed between the tractor and the trailer, is configured such that the side protection body changes its length according to the angle of the tractor relative to the trailer.

[0008] In some embodiments, the side guardrail is a telescopic guardrail that is rotatably connected between the tractor and the trailer.

[0009] In some embodiments, a horizontal drive unit located at the rear end of the tractor is also included, the horizontal drive unit being used to drive the side antibody to extend and shorten.

[0010] In some embodiments, the horizontal drive device includes a winding mechanism and a flexible gear belt wound around the outside of the winding mechanism, and a horizontal drive motor that meshes with the flexible gear belt via gears. The end of the side protection body is fixedly connected to the flexible gear belt, which is used to drive the side protection body to extend or shorten.

[0011] In some embodiments, the side protection body includes a fixed sleeve fixed to a horizontal drive device, a primary telescopic barrier slidably connected to the fixed sleeve, a secondary telescopic barrier slidably connected to the primary telescopic barrier, a limit block fixed to the end of the secondary telescopic barrier, and one end of the flexible gear belt passing through the interior of the fixed sleeve, the primary telescopic barrier and the secondary telescopic barrier and fixedly connected to the limit block.

[0012] In some embodiments, a lifting drive is also included for driving the horizontal drive device and the side protection body to move in the vertical direction.

[0013] In some embodiments, the lifting drive device includes a vertical drive motor and a rack column shaft that is driveably connected to the vertical drive motor, and the horizontal drive device is fixed on the rack column shaft.

[0014] In some embodiments, a control system is also included, which includes a central processing unit connected to a horizontal drive device and a vertical drive device, and a steering angle information sensor and a vehicle body angle information sensor connected to the central processing unit. The steering angle information sensor is used to collect steering wheel angle information and angular velocity information of the tractor, and the vehicle body angle information sensor is used to collect attitude angle information of the tractor.

[0015] In some embodiments, the control system further includes a displacement sensor for measuring the length of the side protection body.

[0016] A second aspect of this application provides a freight train, including:

[0017] Tractor;

[0018] The trailer is connected to the tractor via a drawbar.

[0019] The automatic telescopic side protection device applicable to freight trains described in any of the above-mentioned claims has two side protection bodies that are symmetrically distributed on both sides of the traction rod.

[0020] The beneficial effects of the technical solution provided in this application include:

[0021] This application provides an automatic telescopic side protection device and a freight train suitable for freight trains. By setting a side protection body, the side protection body changes its length according to the angle of the tractor relative to the trailer. Thus, when the tractor turns, the length of the side protection can be automatically adjusted without interfering with the trailer, effectively protecting the vehicle body structure from damage. At the same time, it prevents pedestrians or vehicles from crawling under the vehicle through the gap at the connection between the tractor and the trailer, causing a crushing accident, and plays a protective and buffering role for vehicles and pedestrians. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0024] Figure 2 This is a partial schematic diagram of the horizontal drive device according to an embodiment of this application;

[0025] Figure 3 This is a structural block diagram of an embodiment of this application.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Horizontal drive unit; 2. Flexible gear belt; 3. Horizontal drive motor; 4. Fixing sleeve; 5. Primary telescopic barrier; 6. Secondary telescopic barrier; 7. Limiting and fixing block; 8. Vehicle body angle information sensor; 9. Central processing unit; 10. Rack column shaft; 11. Lifting drive unit; 12. Angle information sensor; 13. Tractor; 14. Trailer. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] This application provides an automatic telescopic side protection device and a freight train suitable for freight trains, which can solve the problem of interference during turning at the connection position of freight trains in related technologies.

[0030] See Figure 1 As shown, the first aspect of this application provides an automatic retractable side protection device suitable for freight trains, comprising:

[0031] The side protection body is located between the tractor 13 and the trailer 14. The side protection body is configured such that its length changes according to the angle of the tractor 13 relative to the trailer 14.

[0032] The side protection body of the automatic telescopic side protection device applicable to freight trains in this application embodiment is installed between the tractor 13 and the trailer 14. When the tractor 13 turns, the side protection body can automatically adjust its length according to the change of the gap at the connection position between the tractor 13 and the trailer 14, without interfering with the trailer, effectively protecting the vehicle body structure from damage, and at the same time preventing pedestrians or vehicles from crawling under the vehicle through the gap at the connection position between the tractor and the trailer, causing a crushing accident, thus playing a protective and buffering role for vehicles and pedestrians.

[0033] In some alternative embodiments: see Figure 1 As shown in the figure, this application embodiment provides an automatic telescopic side protection device suitable for freight trains. The main body of the automatic telescopic side protection device suitable for freight trains is a telescopic guardrail, which is rotatably connected between the tractor 13 and the trailer 14.

[0034] The side protection body of the automatic telescopic side protection device applicable to freight trains in this application embodiment is a telescopic guardrail. The two ends of the telescopic guardrail are hinged between the tractor 13 and the trailer 14. When the tractor 13 turns, the gap between the tractor 13 and the trailer 14 changes, and the telescopic guardrail extends and retracts accordingly to change its length without interfering with the trailer. This effectively protects the vehicle's main structure from damage and prevents pedestrians or vehicles from crawling under the vehicle through the gap between the tractor and the trailer, thus avoiding crushing accidents. In this way, it protects and buffers vehicles and pedestrians.

[0035] In some alternative embodiments: see Figures 1 to 2 As shown, this application embodiment provides an automatic telescopic side protection device suitable for freight trains. The automatic telescopic side protection device suitable for freight trains also includes a horizontal drive device 1 disposed at the rear end of the tractor 13. The horizontal drive device 1 is used to drive the side protection body to extend and retract.

[0036] The horizontal drive device 1 includes a winding mechanism and a flexible gear belt 2 wound around the outside of the winding mechanism, and a horizontal drive motor 3 that is driven by the flexible gear belt 2 through gear meshing. The end of the side protection body is fixedly connected to the flexible gear belt 2, and the flexible gear belt 2 is used to drive the side protection body to extend or shorten.

[0037] The side protection body includes a fixed sleeve 4 fixed on the horizontal drive device 1, a first-level telescopic barrier 5 slidably connected to the fixed sleeve 4, a second-level telescopic barrier 6 slidably connected to the first-level telescopic barrier 5, and a limit fixing block 7 fixed at the end of the second-level telescopic barrier 6. One end of the flexible gear belt 2 passes through the interior of the fixed sleeve 4, the first-level telescopic barrier 5 and the second-level telescopic barrier 6 and is fixedly connected to the limit fixing block 7.

[0038] The horizontal drive device 1 of the automatic telescopic side protection device applicable to freight trains in this application embodiment is provided with a winding mechanism and a flexible gear belt 2 wound around the outside of the winding mechanism. The winding mechanism is a winding motor. The end of the flexible gear belt 2 is fixed on the rotating shaft of the winding motor, thereby driving the flexible gear belt 2 to wind or release. The end of the first-level telescopic barrier 5 is provided with a flange that is restricted by the fixing sleeve 4 to prevent the first-level telescopic barrier 5 from detaching from the fixing sleeve 4. The end of the second-level telescopic barrier 6 is provided with a flange that is restricted by the first-level telescopic barrier 5 to prevent the second-level telescopic barrier 6 from detaching from the first-level telescopic barrier 5.

[0039] When in use, the gap between the tractor 13 and the trailer 14 changes, requiring the side protection body to shorten. The winding motor drives the flexible gear belt 2 to wind up, while the horizontal drive motor 3 drives the flexible gear belt 2 to move via gears, assisting in the winding of the flexible gear belt 2. This causes the flexible gear belt 2 to move the limiting fixing block 7 closer to the horizontal drive device 1. The limiting fixing block 7 then causes the secondary telescopic barrier 6 to slide into the primary telescopic barrier 5. After the secondary telescopic barrier 6 slides into the extreme position within the primary telescopic barrier 5, it causes the primary telescopic barrier 5 to slide into the fixing sleeve 4. When the side protection body needs to extend, the winding motor drives the flexible gear belt 2 to release, while the horizontal drive motor 3 drives the flexible gear belt 2 to move via gears. This causes the flexible gear belt 2, which is constrained by the fixing sleeve 4, the primary telescopic barrier 5, and the secondary telescopic barrier 6, to move the limiting fixing block 7. After the limiting fixing block 7 moves the secondary telescopic barrier 6 to its extreme position, it causes the primary telescopic barrier 5 to move. This allows for the flexible extension and retraction of the side protection body, adjusting its length in conjunction with the turning of the tractor 13 and the trailer 14.

[0040] It should be noted that the function of the horizontal drive device 1 is to realize the extension and retraction of the control side anti-aircraft body. Therefore, it can be understood that other horizontal drive devices 1 that can realize such functions can be used in this application. Those skilled in the art can make adaptive adjustments to the size, shape and material of the lifting drive device 11 according to the usage scenario and test conditions.

[0041] In some alternative embodiments: see Figure 1 As shown, this application embodiment provides an automatic telescopic side protection device suitable for freight trains. The automatic telescopic side protection device suitable for freight trains also includes a lifting drive device 11 for driving the horizontal drive device 1 and the side protection body to move in the vertical direction.

[0042] The lifting drive device 11 includes a vertical drive motor and a rack column shaft 10 that is connected to the vertical drive motor for transmission. The horizontal drive device 1 is fixed on the rack column shaft 10.

[0043] The lifting drive device 11 of the automatic telescopic side protection device applicable to freight trains in this application embodiment is equipped with a vertical drive motor and a rack column shaft 10 that is connected to the vertical drive motor. The vertical drive motor drives the rack column shaft 10 to move, the rack column shaft 10 drives the horizontal drive device 1 to move, and the horizontal drive device 1 drives the side protection body to move, thereby realizing the control of the lifting of the side protection body. When the tractor 13 and the trailer 14 are going up or down a slope, the lifting of the side protection body is controlled to adjust the ground clearance of the side protection body, thereby avoiding the side protection body from interfering with the vehicle's climbing and ensuring the vehicle's climbing ability.

[0044] It should be noted that the function of the lifting drive device 11 is to realize the lifting of the control side anti-aircraft body. Therefore, it can be understood that other lifting drive devices 11 that can realize such functions can be used in this application. Those skilled in the art can make adaptive adjustments to the size, shape and material of the lifting drive device 11 according to the usage scenario and test conditions.

[0045] In some alternative embodiments: see Figures 1 to 3 As shown, this application embodiment provides an automatic telescopic side protection device suitable for freight trains. The automatic telescopic side protection device suitable for freight trains also includes a control system. The control system includes a central processing unit 9 connected to a horizontal drive device 1 and a lifting drive device 11, and a steering angle information sensor 12 and a vehicle body angle information sensor 8 connected to the central processing unit 9. The steering angle information sensor 12 is used to collect steering wheel angle information and angular velocity information of the tractor 13, and the vehicle body angle information sensor 8 is used to collect attitude angle information of the tractor 13.

[0046] The automatic telescopic side protection device applicable to the freight train in this application embodiment also includes a control system. The central processing unit 9 of the control system is implanted with the proportional relationship between the steering wheel angle, the body yaw rate and the change of the side clearance on both sides of the tractor 13 and the trailer 14 during the vehicle turning process. At the same time, the central processing unit 9 is implanted with the proportional relationship between the climbing angle of the tractor 13 and the ground clearance of the last end of the side protection body and the reference parameters are set.

[0047] The steering angle information sensor 12 of the control system is installed at the steering wheel shaft of the tractor 13. It collects the steering wheel angle and angular velocity information of the tractor and sends it to the central processor 9. Through the input of the steering angle information, the central processor 9 controls the horizontal drive device 1 to move, thereby adjusting the length of the side protection body to cooperate with the tractor 13 and trailer 14 to turn, and avoid the side protection body from interfering with the turning.

[0048] The vehicle body angle information sensor 8 is installed on the towing vehicle body to collect the attitude angle information of the towing vehicle and send it to the central processor 9. Through the attitude angle information input, the central processor 9 controls the lifting drive device 11 to adjust the height of the side protection body, so as to cooperate with the towing vehicle 13 and trailer 14 to climb the slope and avoid the side protection body from interfering with the climbing.

[0049] In some alternative embodiments: see Figures 1 to 3 As shown, this application provides an automatic telescopic side protection device suitable for freight trains. The control system of the automatic telescopic side protection device suitable for freight trains also includes a displacement sensor for measuring the length of the side protection body.

[0050] In this application embodiment, the displacement sensor of the automatic telescopic side protection device applicable to freight trains measures the change in length of the side protection body and feeds it back to the central processing unit 9. The central processing unit 9 then controls the horizontal drive device 1 to correct the change in length, ensuring that the side protection body does not interfere with the turning of the tractor 13 and trailer 14. The displacement sensor in this application is preferably a wire displacement sensor, which is fixed on the fixed sleeve 4 and its wire end is fixed on the limiting fixed block 7, and then moves with the limiting fixed block 7 to measure the change in length.

[0051] See Figures 1 to 3 As shown, a second aspect of this application provides a freight train, including:

[0052] 13 tractor units;

[0053] Trailer 14, tractor 13 is connected to trailer 14 via a drawbar;

[0054] The automatic retractable side protection device applicable to any of the above-mentioned freight trains has two side protection bodies, which are symmetrically distributed on both sides of the traction bar.

[0055] The freight train of this application embodiment includes a tractor 13 and a trailer 14 connected by a tow bar. The side protection body is set on both sides of the tow bar, which solves the protection problem of the connection part between the tractor 13 and the trailer 14 and improves the safety of vehicle operation. The automatic control of the length change of the side protection body ensures that the tractor 13 always maintains a reasonable gap with the trailer connection part, whether it is going straight or turning, so as to prevent people and vehicles from being caught in to the greatest extent and play a protective and buffering role for vehicles and pedestrians. The side protection body can also be automatically raised and lowered, which solves the problem that the departure angle of the vehicle becomes smaller after the side protection body is installed, and maximizes the original passability of the vehicle. It has a positive effect on the innovation of side protection performance and function.

[0056] Specific example 1:

[0057] Assuming that the automatic telescopic side protection device is installed on a normally traveling freight train, the distance between the tractor 13 and the frontmost side of the trailer 14 is 200cm, and the distance between the rearmost edge of the side protection device and the front edge of the trailer 14 is 20cm. When the vehicle begins to turn left, the central processing unit 9 calculates that the distance between the rearmost edge of the tractor 13 and the frontmost side of the trailer 14 will be reduced to 100cm based on the proportional relationship between the steering wheel angle, the yaw rate of the vehicle body and the change in the side clearance between the two sides of the connection position of the tractor 13 and the trailer 14. At this time, the central processing unit 9 will control the horizontal drive device 1 to retract the side protection device on this side by 100cm to ensure that the distance between the rearmost edge of the side protection device and the front edge of the trailer 14 is 20cm, so as to ensure that the side protection device does not interfere with the trailer when the vehicle turns.

[0058] Specific example 2:

[0059] Assuming that the automatic telescopic side protection device is installed on a normally operating freight train, the ground clearance of the rearmost end of the side protection body is 20cm. When the vehicle starts climbing a slope, the central processing unit 9 calculates that the ground clearance of the rearmost end of the side protection body will decrease to -10cm based on the ratio between the climbing angle of the tractor 13 and the ground clearance of the rearmost end of the side protection body. At this time, the central processing unit 9 will control the lifting drive device 11 to raise the side protection body on this side by 30cm to ensure that the ground clearance of the rearmost end of the side protection body on this side is 20cm.

[0060] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0061] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0062] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An automatic retractable side protection device suitable for freight trains, characterized in that, include: Side protection body, which is disposed between the tractor (13) and the trailer (14), is configured such that the side protection body changes its length according to the angle of the tractor (13) relative to the trailer (14); It also includes a horizontal drive device (1) located at the rear end of the tractor (13), the horizontal drive device (1) being used to drive the side anti-body to extend and shorten; It also includes a lifting drive (11) for driving the horizontal drive device (1) and the side guard body to move in the vertical direction. The horizontal drive device (1) includes a winding mechanism and a flexible gear belt (2) wound around the outside of the winding mechanism, and a horizontal drive motor (3) that is driven by gear meshing with the flexible gear belt (2). The flexible gear belt (2) is used to drive the side guard body to extend or shorten. The side protection body includes a fixed sleeve (4) fixed on a horizontal drive device (1), a first-level telescopic rail (5) is slidably connected to the fixed sleeve (4), a second-level telescopic rail (6) is slidably connected to the first-level telescopic rail (5), a limit fixing block (7) is fixed at the end of the second-level telescopic rail (6), and one end of the flexible gear belt (2) passes through the inside of the fixed sleeve (4), the first-level telescopic rail (5) and the second-level telescopic rail (6) and is fixedly connected to the limit fixing block (7); It also includes a control system, which includes a central processing unit (9) connected to the horizontal drive device (1) and the lifting drive device (11), and a steering angle information sensor (12) and a vehicle body angle information sensor (8) connected to the central processing unit (9). The steering angle information sensor (12) is used to collect steering wheel angle information and angular velocity information of the tractor (13), and the vehicle body angle information sensor (8) is used to collect attitude angle information of the tractor (13).

2. The automatic telescopic side protection device applicable to freight trains as described in claim 1, characterized in that: The side protection body is a telescopic guardrail, which is rotatably connected between the tractor (13) and the trailer (14).

3. The automatic telescopic side protection device applicable to freight trains as described in claim 1, characterized in that: The lifting drive device (11) includes a vertical drive motor and a rack column shaft (10) that is connected to the vertical drive motor for transmission. The horizontal drive device (1) is fixed on the rack column shaft (10).

4. The automatic telescopic side protection device applicable to freight trains as described in claim 1, characterized in that: The control system also includes a displacement sensor for measuring the length of the side protection body.

5. A freight train, characterized in that, include: Tractor (13); Trailer (14), the tractor (13) is connected to the trailer (14) via a drawbar; The automatic telescopic side protection device applicable to freight trains according to any one of claims 1 to 4, wherein the number of side protection bodies is two and they are symmetrically distributed on both sides of the traction rod.

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