Semitrailer reversing brake interlocking system

Abstract

The utility model discloses a semitrailer reversing brake interlocking system which comprises an air cylinder, a hand brake valve, a pneumatic change-over valve, a shuttle valve, two-position three-way mechanical valve assemblies, a parking brake module, an air pipe, shifting rod assemblies, a tractor and a semitrailer compartment, the shifting rod assemblies are arranged on the two sides of the tractor, and the two-position three-way mechanical valve assemblies are arranged on the two sides of the semitrailer compartment. The air storage cylinder is connected with the hand brake valve and the two-position three-way mechanical valve assembly through air pipes, and the hand brake valve is connected with the pneumatic change-over valve through an air pipe. When the included angle between the tractor and the semitrailer carriage is smaller than 90 degrees and continues to be reduced, the round steel of the deflector rod assembly can make contact with the rod of the two-position three-way mechanical valve body, then the rod of the two-position three-way mechanical valve body is rotated leftwards or rightwards, and the two-position three-way mechanical valve body is gradually opened; the two-position three-way mechanical valve body acts on the pneumatic change-over valve after being opened, the pneumatic change-over valve changes positions, and compressed air of the parking braking module is exhausted.

Description

Technical Field

[0001] The utility model relates to the technical field of reversing of semitrailers, in particular to a reversing brake interlocking system for semitrailers. Background Art

[0002] A semi-trailer is a type of trailer, which is a heavy-duty transport vehicle connected to the semi-trailer head by a towing pin. With the continuous development of the economy, logistics has developed rapidly. However, the roads in some old urban areas and old industrial areas have not been upgraded in time. There are narrow 90-degree T-shaped three-way roads in front of some warehouses. In this way, it is more difficult for large logistics semi-trailers to reverse into the warehouse for loading and unloading.

[0003] For example, a semi-trailer vehicle with rear wheel reversing power, with announcement number CN 11182426A and announcement date 2020.10.27, includes an ECU and a steering angle sensor that can measure the steering wheel angle. The pair of wheels at the rear end of the semi-trailer are two independently driven electric wheels. The ECU can calculate the deflection angle of the front wheels in the tractor based on the information from the steering angle sensor, and then calculate the turning radius of the semi-trailer when reversing to the side and rear, further calculate the speed difference between the two electric wheels, and control the two electric wheels to actively move at different speeds to achieve steering and reversing.

[0004] As mentioned above and in the prior art, if there is a 90-degree T-shaped three-way road in front of the warehouse that the tractor and the semi-trailer are going to enter, due to road problems, when the large logistics semi-trailer is reversing into the warehouse to load and unload goods, the angle between the tractor and the semi-trailer is often less than 90 degrees. Sometimes the driver does not notice this situation, causing the tractor and the semi-trailer to collide. Therefore, it is urgent to design a semi-trailer reversing brake interlock system to solve the above problem. Utility Model Content

[0005] The utility model aims to provide a reverse brake interlocking system for a semitrailer to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A reverse brake interlocking system for a semitrailer comprises an air reservoir, a hand brake valve, a pneumatic conversion valve, a shuttle valve, a two-position three-way mechanical valve assembly, a parking brake module, an air pipe, a lever assembly, a tractor and a semitrailer compartment, wherein the lever assembly is arranged on both sides of the tractor, and the two-position three-way mechanical valve assembly is arranged on both sides of the semitrailer compartment, the air reservoir is respectively connected to the hand brake valve and the two-position three-way mechanical valve assembly through the air pipe, and the hand brake valve is connected to the pneumatic conversion valve through the air pipe, the pneumatic conversion valve is respectively connected to the shuttle valve and the parking brake module through the air pipe, and the shuttle valve is connected to the two-position three-way mechanical valve assembly.

[0008] Furthermore, the lever assembly includes a fixing plate 1, and the fixing plate 1 is fixed to the outer walls on both sides of the tractor by bolts.

[0009] Furthermore, a spring is arranged on the outer wall of one side of the fixing plate, and a round steel is arranged on the other end of the spring away from the fixing plate.

[0010] Furthermore, the two-position three-way mechanical valve assembly includes a second fixing plate and a two-position three-way mechanical valve body, and the air storage cylinder is connected to the two-position three-way mechanical valve body via an air pipe.

[0011] Furthermore, the two-position three-way mechanical valve body is fixed on the outer wall of the second fixing plate, and the second fixing plate is fixed on the outer wall of the semi-trailer compartment.

[0012] In the above technical scheme, the utility model provides a reverse brake interlock system for a semitrailer, (1) through the provision of an air reservoir, a handbrake valve, a pneumatic conversion valve, a shuttle valve, a lever assembly, an air pipe, a fixing plate, a tractor, a semitrailer, a spring, a round steel and a two-position three-way mechanical valve body, when the angle between the tractor and the semitrailer is less than 90 degrees and continues to decrease, the round steel of the lever assembly will contact the rod of the two-position three-way mechanical valve body, and then the rod of the two-position three-way mechanical valve body will be rotated to the left or right, so that the two-position three-way mechanical valve body is gradually opened, and after the two-position three-way mechanical valve body is opened, it acts on the pneumatic conversion valve, and the pneumatic conversion valve is changed to discharge the compressed gas of the parking brake module, so that the vehicle parking brake is applied, which can assist the driver to reverse into the warehouse, avoid the collision between the tractor and the semitrailer, reduce economic losses, and reduce the labor intensity of the driver; (2) through the provision of a spring, the spring can change the direction of the round steel after contacting the rod of the two-position three-way mechanical valve body, reduce the component force, and make the rod of the two-position three-way mechanical valve body easier to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0014] Figure 1 The present invention is a schematic diagram of the system structure of a reverse brake interlocking system for a semitrailer provided in an embodiment of the present invention.

[0015] Figure 2 The utility model is a schematic diagram of the original state structure of the rod of a two-position three-way mechanical valve body provided in an embodiment of a reverse brake interlock system for a semitrailer.

[0016] Figure 3The utility model is a schematic diagram of the rod rotation state structure of a two-position three-way mechanical valve body provided in an embodiment of a reverse brake interlock system for a semitrailer.

[0017] Figure 4 The utility model is a schematic diagram of the structure of a lever assembly provided in an embodiment of a reverse brake interlocking system for a semitrailer.

[0018] Figure 5 The utility model is a schematic diagram of a front view structure of a tractor and a semitrailer compartment in parallel, provided in an embodiment of a reverse brake interlocking system for a semitrailer.

[0019] Figure 6 The utility model is a schematic diagram of a parallel top view of a tractor and a semitrailer compartment provided in an embodiment of a reverse brake interlocking system for a semitrailer.

[0020] Figure 7 The utility model is a schematic structural diagram of a collision state between a tractor and the right side of a semitrailer provided in an embodiment of a reverse brake interlock system for a semitrailer.

[0021] Figure 8 The utility model is a schematic structural diagram of a collision state between a tractor and the left side of a semitrailer provided in an embodiment of a reverse brake interlock system for a semitrailer.

[0022] Description of reference numerals:

[0023] 1. Air reservoir; 2. Handbrake valve; 3. Pneumatic conversion valve; 4. Shuttle valve; 5. Two-position three-way mechanical valve assembly; 6. Lever assembly; 7. Parking brake module; 8. Air pipe; 9. Fixed plate 1; 10. Tractor; 11. Semi-trailer compartment; 12. Spring; 13. Round steel; 14. Fixed plate 2; 15. Two-position three-way mechanical valve body. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1-8 As shown, a reverse brake interlock system for a semitrailer provided by an embodiment of the utility model comprises an air reservoir 1, a hand brake valve 2, a pneumatic conversion valve 3, a shuttle valve 4, a two-position three-way mechanical valve assembly 5, a parking brake module 7, an air pipe 8, a lever assembly 6, a tractor 10 and a semitrailer compartment 11, the lever assembly 6 is arranged on both sides of the tractor 10, and the two-position three-way mechanical valve assembly 5 is arranged on both sides of the semitrailer compartment 11, the air reservoir 1 is respectively connected to the hand brake valve 2 and the two-position three-way mechanical valve assembly 5 through the air pipe 8, and the hand brake valve 2 is connected to the pneumatic conversion valve 3 through the air pipe 8, the pneumatic conversion valve 3 is respectively connected to the shuttle valve 4 and the parking brake module 7 through the air pipe 8, and the shuttle valve 4 is connected to the two-position three-way mechanical valve assembly 5.

[0026] The utility model provides a reverse brake interlock system for a semitrailer, comprising an air reservoir 1, a hand brake valve 2, a pneumatic conversion valve 3, a shuttle valve 4, a two-position three-way mechanical valve assembly 5, a parking brake module 7, an air pipe 8, a lever assembly 6, a tractor 10 and a semitrailer compartment 11, wherein the lever assembly 6 is arranged on both sides of the tractor 10, and the two-position three-way mechanical valve assembly 5 is arranged on both sides of the semitrailer compartment 11, the air reservoir 1 is respectively connected to the hand brake valve 2 and the two-position three-way mechanical valve assembly 5 through the air pipe 8, and the hand brake valve 2 is connected to the pneumatic conversion valve 3 through the air pipe 8, and the pneumatic conversion valve 3 is respectively connected to the pneumatic conversion valve 3 through the air pipe 8. It is connected to the shuttle valve 4 and the parking brake module 7, and the shuttle valve 4 is connected to the two-position three-way mechanical valve assembly 5. When the angle between the tractor 10 and the semi-trailer 11 is less than 90 degrees and continues to decrease, the round steel 13 will contact the rod of the two-position three-way mechanical valve body 15, and then the rod of the two-position three-way mechanical valve body 15 will be rotated to the left or right, so that the two-position three-way mechanical valve body 15 will gradually open and act on the pneumatic conversion valve 3, so that the pneumatic conversion valve 3 will be shifted, and the pneumatic conversion valve 3 will discharge the compressed gas of the parking brake module 7, so that the vehicle is parked and braked, which can avoid the collision between the tractor 10 and the semi-trailer 11.

[0027] By setting: when the angle between the tractor 10 and the semi-trailer 11 is less than 90 degrees and continues to decrease, the round steel 13 of the lever assembly 6 will contact the rod of the two-position three-way mechanical valve body 15, and then the rod of the two-position three-way mechanical valve body 15 will be rotated to the left or right, so that the two-position three-way mechanical valve body 15 is gradually opened. After the two-position three-way mechanical valve body 15 is opened, it acts on the pneumatic conversion valve 3, and the pneumatic conversion valve 3 is shifted to discharge the compressed gas of the parking brake module 7, so that the vehicle parking brake is applied, which can assist the driver to reverse into the warehouse, avoid the collision between the tractor 10 and the semi-trailer 11, reduce economic losses, and reduce the labor intensity of the driver.

[0028] In one embodiment provided by the present utility model, Figure 4 As shown, the lever assembly 6 includes a fixing plate 9 , which is fixed to the outer walls on both sides of the tractor 10 by bolts, and the fixing plate 9 is used to fix the spring 12 .

[0029] In another embodiment provided by the present utility model, Figure 4 As shown, a spring 12 is provided on the outer wall of one side of the fixed plate 9, and a round steel 13 is provided on the other end of the spring 12 away from the fixed plate 9. The spring 12 can change the direction of the round steel 13 after it contacts the rod of the two-position three-way mechanical valve body 15, thereby reducing the component force and making the rod of the two-position three-way mechanical valve body 15 easier to rotate.

[0030] In another embodiment provided by the present utility model, Figure 2 and Figure 3As shown, the two-position three-way mechanical valve assembly 5 includes a fixed plate 14 and a two-position three-way mechanical valve body 15. The air storage cylinder 1 is connected to the two-position three-way mechanical valve body 15 through an air pipe 8. When the rod of the two-position three-way mechanical valve body 15 is rotated to the left or right from the initial position by an external force, the two-position three-way mechanical valve body 15 will gradually open.

[0031] In one embodiment provided by the present utility model, Figure 2 and Figure 3 As shown, the two-position three-way mechanical valve body 15 is fixed on the outer wall of the second fixing plate 14 , and the second fixing plate 14 is fixed on the outer wall of the semi-trailer compartment 11 . The second fixing plate 14 is used to install the two-position three-way mechanical valve body 15 .

[0032] Working principle: when the semi-trailer is reversing on a T-shaped road, when the angle between the tractor 10 and the semi-trailer compartment 11 is less than 90 degrees and continues to decrease, the round steel 13 will contact the rod of the two-position three-way mechanical valve body 15, and then the rod of the two-position three-way mechanical valve body 15 will be rotated to the left or right, so that the two-position three-way mechanical valve body 15 will gradually open. After the two-position three-way mechanical valve body 15 is opened, it will act on the pneumatic conversion valve 3, and the pneumatic conversion valve 3 will be switched to discharge the compressed gas of the parking brake module 7, so that the vehicle parking brake can be applied, which can assist the driver in reversing into the warehouse, avoid the collision between the tractor 10 and the semi-trailer compartment 11, reduce economic losses, and reduce the labor intensity of the driver.

[0033] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A reverse brake interlock system for a semitrailer, comprising an air reservoir (1), a hand brake valve (2), a pneumatic conversion valve (3), a shuttle valve (4), a two-position three-way mechanical valve assembly (5), a parking brake module (7), an air pipe (8), a lever assembly (6), a tractor (10) and a semitrailer compartment (11), characterized in that: The lever assembly (6) is arranged on both sides of the tractor (10), and the two-position three-way mechanical valve assembly (5) is arranged on both sides of the semi-trailer compartment (11); the air reservoir (1) is connected to the hand brake valve (2) and the two-position three-way mechanical valve assembly (5) through an air pipe (8), respectively; the hand brake valve (2) is connected to the pneumatic conversion valve (3) through an air pipe (8), the pneumatic conversion valve (3) is connected to the shuttle valve (4) and the parking brake module (7) through an air pipe (8), respectively; the shuttle valve (4) is connected to the two-position three-way mechanical valve assembly (5).

2. A reverse brake interlock system for a semitrailer according to claim 1, characterized in that: The lever assembly (6) comprises a fixing plate (9), and the fixing plate (9) is fixed to the outer walls on both sides of the tractor (10) by bolts.

3. A reverse brake interlock system for a semitrailer according to claim 2, characterized in that: A spring (12) is arranged on the outer wall of one side of the fixing plate (9), and a round steel (13) is arranged on the other end of the spring (12) away from the fixing plate (9).

4. A reverse brake interlock system for a semitrailer according to claim 3, characterized in that: The two-position three-way mechanical valve assembly (5) comprises a second fixing plate (14) and a two-position three-way mechanical valve body (15), and the air storage cylinder (1) is connected to the two-position three-way mechanical valve body (15) via an air pipe (8).

5. A reverse brake interlock system for a semitrailer according to claim 4, characterized in that: The two-position three-way mechanical valve body (15) is fixed on the outer wall of the second fixing plate (14), and the second fixing plate (14) is fixed on the outer wall of the semi-trailer compartment (11).

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