Air pipe anti-loosening device for trailer and automobile

Abstract

The present application relates to the field of automobile technology, and in particular to a trailer air pipeline anti-loosening device and a vehicle, wherein the trailer air pipeline has a first pipeline arranged in a spiral shape, and the trailer air pipeline anti-loosening device comprises: an actuating mechanism and a pulling member; wherein the actuating mechanism is arranged on the main vehicle; one end of the pulling member is connected to the actuating mechanism, and the other end of the pulling member passes through a channel formed by the spiral arrangement of the first pipeline for connecting to the trailer; the actuating mechanism is constructed to be able to drive the pulling member to extend or retract, thereby tensioning or relaxing the pulling member. It can be seen that in the use state, the first transmission member and the handshake valve are used to provide a pair of balancing forces to the pulling member, so that the pulling member is in a suitable tensioning state, thereby lifting the air pipe, and the air pipe will not sag and wear, nor will it be rolled into the transmission system due to sagging, thereby ensuring driving safety.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a device for preventing air pipeline from loosening for a trailer and an automobile. Background Art

[0002] At present, with the development of economy and the progress of society, vehicles have become one of the main means of transportation. As an indispensable component of vehicles, the braking system plays an important role in driving safety. At present, most commercial transport vehicles are mainly semi-trailer tractors. Such commercial vehicles mostly use pneumatic methods to drive the brake actuators to generate braking force for the tractor (also known as the main vehicle) and the trailer to ensure driving safety. However, the trailer itself has no air source, so the air used by the trailer comes from the main vehicle, and the brake signal also comes from the main vehicle, so there must be a connecting air pipe between the main vehicle and the trailer. At present, almost all tractors use spiral red and yellow air pipes to connect the main vehicle and the trailer.

[0003] However, conventional spiral air pipes can experience stress relaxation over long periods of use and sag under gravity, which can interfere with the vehicle frame and cause wear, leading to trailer brake system failure. Summary of the invention

[0004] Based on this, it is necessary to provide a trailer air pipe anti-loosening device and a vehicle to improve the technical problem in the prior art that the spiral air pipe is loose and droops and wears, resulting in failure of the trailer brake system.

[0005] The present application provides a device for preventing a trailer air pipeline from loosening. The trailer air pipeline has a first pipeline arranged in a spiral shape. The device for preventing a trailer air pipeline from loosening comprises:

[0006] an actuating mechanism, mounted on the main vehicle; and

[0007] A pulling member, one end of which is connected to the actuating mechanism, and the other end of which passes through a channel formed by the spiral arrangement of the first pipeline to be connected to the trailer;

[0008] The actuating mechanism is configured to drive the pulling member to extend or retract, thereby tensioning or relaxing the pulling member.

[0009] The above-mentioned trailer air pipe anti-loosening device, when the main vehicle and the trailer are connected, the actuating mechanism can drive the pulling member to tighten, and at the same time the pulling member passes through the channel formed by the spiral setting of the first pipeline, so that the air pipe can be lifted up, thereby effectively avoiding the risk of pipeline wear or involvement in the vehicle transmission system due to sagging of the air pipe, thereby ensuring driving safety.

[0010] In the above technical solution, further, the actuating mechanism includes a driving device and a first transmission member;

[0011] Wherein, the driving device and the first transmission member are arranged on the main vehicle, and the driving device can drive the first transmission member to rotate so as to tighten or relax the pulling member.

[0012] In any of the above technical solutions, further, the actuating mechanism further includes an elastic member, one end of the elastic member is connected to the driving device, and the other end of the elastic member is connected to the first transmission member;

[0013] When the main vehicle and the trailer are connected, the elastic member has a pre-tightening force that forces the first transmission member to rotate along a first direction, so as to tension the pulling member.

[0014] In any of the above technical solutions, further, the pulling member has a storage state, and when the pulling member is separated from the trailer, the elastic member can drive the first transmission member to rotate along the first direction to be in the storage state.

[0015] In any of the above technical solutions, further, the driving device includes a driving member and a second transmission member; wherein the driving member is connected to the second transmission member and is used to drive the second transmission member to rotate;

[0016] One end of the elastic member is connected to the second transmission member, and the other end of the elastic member is connected to the first transmission member.

[0017] In any of the above technical solutions, further, the trailer air pipeline anti-loosening device also includes an anti-reversal component, which is arranged between the second transmission member and the main vehicle and is used to make the second transmission member rotate unidirectionally along the first direction.

[0018] In any of the above technical solutions, further, the anti-reversal assembly includes a pawl and a ratchet;

[0019] Wherein, the pawl is arranged on the main vehicle; the ratchet is arranged on the second transmission member, and the ratchet can rotate synchronously with the second transmission member;

[0020] The pawl is mounted on the ratchet wheel, and the pawl can make the ratchet wheel rotate unidirectionally along the first direction.

[0021] In any of the above technical solutions, further, the trailer air pipeline anti-loosening device also includes a controller, a sensor and an alarm device arranged on the main vehicle;

[0022] Wherein, the sensor, the alarm device and the driving device are respectively connected to the controller.

[0023] In any of the above technical solutions, further, the driving device is a motor, and the motor is connected to the first transmission member to drive the first transmission member to rotate.

[0024] The present application also provides an automobile, comprising the trailer air pipeline anti-loosening device described in any of the above technical solutions, and thus has all the beneficial technical effects of the device, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the structure of a trailer air pipeline anti-loosening device provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of a portion of the structure of a trailer air pipeline anti-loosening device provided in an embodiment of the present application;

[0028] Figure 3 A schematic diagram of another part of the structure of the trailer air pipeline anti-loosening device provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of the circuit connection of the trailer air pipeline anti-loosening device provided in an embodiment of the present application.

[0030] Reference numerals:

[0031] 1-pulling member, 2-first transmission member, 201-installing groove, 202-second limiting groove, 3-elastic member, 301-first clamping portion, 302-second clamping portion, 4-driving member, 5-second transmission member, 501-first limiting groove, 6-anti-reversal component, 601-pawl, 602-ratchet, 6021-special-shaped hole, 7-controller, 8-sensor, 9-alarm device, 10-manual switch, 11-power supply, 12-driving circuit, 13-handshake valve, 14-trachea, 141-first pipeline. DETAILED DESCRIPTION

[0032] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0033] The components of the embodiments of the present application generally described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0034] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0035] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] Refer to the following Figures 1 to 4 The invention describes an anti-loosening device for air pipes for trailers according to some embodiments of the present application.

[0038] See also Figures 1 to 3 As shown, an embodiment of the present application provides a trailer air pipeline anti-loosening device, the trailer air pipeline has a first pipeline 141 arranged in a spiral shape, and the trailer air pipeline anti-loosening device includes:

[0039] an actuating mechanism, mounted on the main vehicle; and

[0040] The pulling member 1 has one end connected to the actuating mechanism, and the other end passes through a channel formed by the spiral arrangement of the first pipe 141 to be connected to the trailer (specifically, the other end of the pulling member 1 is connected to the handshake valve 13, and the handshake valve 13 can be connected to the interface of the trailer, and this structure is used as an example for description below);

[0041] The actuating mechanism is configured to drive the pulling member 1 to extend or retract, thereby tensioning or relaxing the pulling member 1 .

[0042] The above-mentioned trailer air pipe anti-loosening device, the actuating mechanism can drive the pulling member 1 to be tensioned. When the main vehicle and the trailer are connected, the pulling member 1 passes through the channel formed by the spiral arrangement of the first pipeline 141, so that the air pipe 14 can be lifted up, thereby effectively avoiding the risk of the air pipe 14 being worn out or being involved in the vehicle transmission system due to sagging, thereby ensuring driving safety.

[0043] Specifically, when in use, the operator holds the handshake valve 13 and moves toward the interface of the trailer, and the handshake valve 13 drives the pulling member 1 to move in the same direction. When the handshake valve 13 is plugged into the interface of the trailer and afterwards, the handshake valve 13 applies a first pulling force to the pulling member 1. At the same time, the actuating mechanism drives the pulling member 1 to have a tendency to stretch, that is, at this time, the actuating mechanism applies a second pulling force to the pulling member 1, and the second pulling force is equal to and opposite to the first pulling force, thereby making the pulling member 1 in a properly tensioned state. Since the pulling member 1 is inserted into the hollow part of the first pipeline 141 of the air pipe 14, the air pipe 14 can be lifted up while the pulling member 1 is tensioned, thereby effectively avoiding the risk of the air pipe 14 being worn out or being involved in the vehicle transmission system due to sagging. In addition, when the handshake valve 13 accidentally falls off the trailer, the actuating mechanism drives the pulling component 1 to move and retract it to the main vehicle. At the same time, the pulling component 1 drives the handshake valve 13 and the air pipe 14 to move and retract them to the main vehicle, preventing the air pipe 14 from being worn or involved in the transmission system, thereby ensuring driving safety.

[0044] It can be seen that the trailer air pipeline anti-loosening device provided in this embodiment, when in use, uses the actuating mechanism and the handshake valve 13 to provide a pair of balancing forces to the pulling member 1, so that the pulling member 1 is in a suitable tensioned state, and then the air pipe 14 is lifted up, so that the air pipe 14 will not sag and wear, and will not be involved in the transmission system due to sagging, thereby ensuring driving safety. In addition, when the handshake valve 13 accidentally falls off the trailer, the actuating mechanism drives the pulling member 1 to move and retract it to the main vehicle, and the pulling member 1 can drive the handshake valve 13 and the air pipe 14 to move and retract them to the main vehicle, preventing the air pipe 14 from being worn or involved in the transmission system, thereby ensuring driving safety.

[0045] Optionally, the pulling member 1 may be a steel wire rope, but is not limited thereto.

[0046] Optionally, the other end of the pulling member 1 is not limited to being connected to the handshake valve 13, but can also be configured according to actual needs.

[0047] In some embodiments of the present application, Figures 1 to 3 As shown, the actuating mechanism includes a driving device and a first transmission member 2;

[0048] Specifically in the embodiment, the driving device and the first transmission member 2 are arranged on the main vehicle, and the driving device can drive the first transmission member 2 to rotate to tighten or relax the pulling member 1.

[0049] In this embodiment, when the trailer air pipeline anti-loosening device is used, the operator holds the handshake valve 13 and moves toward the interface of the trailer, and the handshake valve 13 drives the pulling member 1 to move in the same direction. When the handshake valve 13 is plugged into the interface of the trailer and afterwards, the handshake valve 13 applies a first pulling force to the pulling member 1. At the same time, the first transmission member 2 is driven to move by the driving device, and the first transmission member 2 applies a second pulling force to the pulling member 1. The second pulling force is equal to the first pulling force and is opposite to the first pulling force, so that the pulling member 1 is in a suitable tensioned state. Since the pulling member 1 is inserted into the hollow part of the first pipeline 141 of the air pipe 14, the air pipe 14 can be lifted up while the pulling member 1 is tensioned, thereby effectively avoiding the risk of the air pipe 14 being worn or involved in the vehicle transmission system due to sagging. In addition, when the handshake valve 13 accidentally falls off the trailer, the first transmission component 2 is driven to drive the traction component to move and retract it to the main vehicle. At the same time, the traction component drives the handshake valve 13 and the air pipe 14 to move and retract them to the main vehicle, preventing the air pipe 14 from being worn or involved in the transmission system, thereby ensuring driving safety.

[0050] In some embodiments of the present application, Figures 1 to 3 As shown, the actuating mechanism further includes an elastic member 3 , one end of the elastic member 3 is connected to the driving device, and the other end of the elastic member 3 is connected to the first transmission member 2 .

[0051] In this embodiment, the elastic member 3 has a simple structure, which can store energy and release energy. The process of its cooperation with various components is as follows: when the handshake valve 13 moves toward the interface of the trailer, the handshake valve 13 drives the pulling member 1 to move, so that the pulling member 1 drives the first transmission member 2 to rotate along the first direction and compresses the elastic member 3 to store energy; when the handshake valve 13 is plugged into the interface of the trailer and thereafter, that is, when the main vehicle and the trailer are connected, the elastic member 3 is in a compressed state and forces the first transmission member 2 to have a tendency to rotate along the first direction, and the first transmission member 2 tightens the pulling member 1 to lift the air pipe 14; when the handshake valve 13 falls off from the interface of the trailer, the elastic member 3 releases energy and drives the first transmission member 2 to rotate along the first direction, and the first transmission member 2 drives the pulling member 1 to move toward the main vehicle, and the pulling member 1 together with the air pipe 14 is stored at the main vehicle and will not be involved in the transmission system, that is, at this time the pulling member 1 together with the air pipe 14 is in a stored state.

[0052] In some embodiments of the present application, preferably, Figures 1 to 3As shown, the driving device includes a driving member 4 and a second transmission member 5; wherein the driving member 4 is connected to the second transmission member 5 to drive the second transmission member 5 to rotate;

[0053] One end of the elastic member 3 is connected to the second transmission member 5, and the other end of the elastic member 3 is connected to the first transmission member 2;

[0054] The trailer air pipeline anti-loosening device further includes an anti-reversal component 6, which is disposed between the second transmission member 5 and the main vehicle and is used to make the second transmission member 5 rotate unidirectionally along the first direction.

[0055] In this embodiment, when the handshake valve 13 accidentally falls off, that is, one end of the pulling member 1 connected to the handshake valve 13 is loosened, at this time, although the force of the elastic member 3 can drive the first transmission member 2 to rotate, and the first transmission member 2 drives the pulling member 1 to move toward the main vehicle, it may not be able to completely retract the pulling member 1 together with the air pipe 14 to the main vehicle. Therefore, the driving member 4 can be started at this time, and the driving member 4 drives the second transmission member 5 to continue to rotate, and the second transmission member 5 drives the first transmission member 2 to continue to rotate, and can completely retract the pulling member 1, and the pulling member 1 can pull the air pipe 14 and the handshake valve 13 back to the main vehicle, which is safer and more reliable. Among them, the anti-reversal component 6 makes the tension of the pulling member 1 adjustable. When the handshake valve 13 is connected to the interface of the trailer, if it is found that the tension of the pulling member 1 is insufficient and the air pipe 14 still has a large amount of droop, the anti-reversal component 6 can be used to adjust the tension of the pulling member 1 to a suitable force, and the entire adjustment process is irreversible, and the pulling member 1 will remain at this tension level, which is safer and more reliable.

[0056] Optionally, the second transmission member 5 may be a rotating shaft, but is not limited thereto.

[0057] Optionally, the first transmission member 2 is a helically extending tower pulley structure, which is convenient for winding the pulling member 1 or releasing the pulling member 1, especially when the pulling member 1 is a rope structure, but of course it is not limited thereto.

[0058] Among them, optionally, the elastic member 3 is a spiral spring structure, the spiral spring is placed in the installation groove 201 formed by the first transmission component 2 such as the tower wheel itself, and one end of the spiral spring is formed with a first clamping portion 301, and the other end of the spiral spring is formed with a second clamping portion 302. The first clamping portion 301 is clamped in the first limiting groove 501 opened on the second transmission component 5 such as the rotating shaft, and the second clamping portion 302 is clamped in the second limiting groove 202 opened on the first transmission component 2 such as the tower wheel, thereby completing the assembly of the elastic member 3 with the first transmission component 2 such as the tower wheel and the second transmission component 5 such as the rotating shaft. Of course, the structure of the elastic member 3 is not limited to this.

[0059] Among them, optionally, the driving device is not limited to the above structure, and the driving device can also be a motor, that is, a motor is used instead of the elastic member 3 such as a spiral spring, and the motor directly drives the pulling member 1 to tighten or relax, so as to lift the air pipe 14 or relax the air pipe 14. The degree of automation is high, and no manual adjustment is required. When the driving member 4 is used to drive the first transmission member 2 to move, there is no need to equip the driving member 4, the second transmission member 5 and the anti-reversal component 6, and the structure is simpler.

[0060] In some embodiments of the present application, preferably, Figures 1 to 3 As shown, the anti-reversal assembly 6 includes a pawl 601 and a ratchet 602; the pawl 601 is arranged on the main vehicle; the ratchet 602 is arranged on the second transmission member 5, and the ratchet 602 can rotate synchronously with the second transmission member 5;

[0061] The pawl 601 is mounted on the ratchet 602 , and the pawl 601 can make the ratchet 602 rotate unidirectionally along a first direction.

[0062] In this embodiment, the mechanism of the ratchet 602 and the pawl 601 allows the tensioning force of the pulling member 1 to be adjusted. When the air pipe 14 is connected to the trailer, it is found that the tensioning force of the pulling member 1 is insufficient and the air pipe 14 still has a large amount of sagging. The second transmission member 5, such as the ratchet shaft, can be manually rotated so that the second transmission member 5 drives the elastic member 3, such as the volute spring, to rotate, and the elastic member 3 drives the first transmission member 2, such as the step pulley, to rotate in the same direction, so that the pulling member 1 is tensioned to a suitable force. Since the second transmission member 5 can only rotate in one direction, the entire adjustment process is irreversible, and the pulling member 1 will remain at this tensioning level.

[0063] Optionally, a special-shaped hole 6021 is provided on the ratchet 602, and the output end of the driving member 4 is inserted into the special-shaped hole 6021, so that the connection is more stable.

[0064] In some embodiments of the present application, preferably, Figures 1 to 3 As shown, the trailer air pipeline anti-loosening device also includes a controller 7, a sensor 8 and an alarm device 9 arranged on the main vehicle;

[0065] The sensor 8 , the alarm device 9 and the driving element 4 are respectively connected to the controller 7 .

[0066] In this embodiment, the sensor 8 can sense the change of the plug-in state of the handshake valve 13, or sense the change of the length of the pulling member 1, or sense the change of the rotation angle of the first transmission member 2 such as the step pulley. When the state change reaches the threshold, the controller 7 will control the drive circuit 12 to control the drive member 4 to rotate, drive the step pulley to rotate, retract the pulling member 1, and the pulling member 1 drives the handshake valve 13 and the air pipe 14 to retract to the main vehicle to prevent the free end of the air pipe 14 from being involved in the vehicle's transmission system. At the same time, the controller 7 controls the alarm device 9 to sound an alarm to prompt the driver to check the plug-in state of the trailer air pipe 14. Among them, the controller 7 is externally connected to the power supply 11, and the controller 7 is equipped with a manual switch 10, which can also be manually opened or closed, playing a double insurance role.

[0067] In summary, when the wire rope is stretched, it drives the tower wheel to rotate. At this time, the ratchet shaft is in a stopped state, so the tower wheel and the ratchet shaft form relative rotation, and the vortex spring begins to accumulate elastic potential energy. When the spiral air tube 14 is in a loose state, the vortex spring releases the elastic potential energy, reverses the tower wheel (at this time the ratchet shaft is still in a stopped state), and recovers the wire rope together with the spiral air tube 14. Since the elastic force of the vortex spring may not be able to completely recover the air tube 14, it is necessary to use a motor to drive the ratchet shaft to rotate, thereby driving the vortex spring and the tower wheel to retract the wire rope to a safe position. The existence of the ratchet mechanism allows the tension of the wire rope to be adjusted. When the air pipe 14 is connected to the trailer, if the tension of the wire rope is insufficient and the air pipe 14 still has a large amount of droop, the ratchet shaft can be manually rotated to make the ratchet shaft drive the volute spring and the tower wheel to rotate in the same direction, so that the wire rope is tightened to the appropriate force. Since the ratchet shaft can only rotate in one direction, the entire adjustment process is irreversible and the wire rope will remain at this tension. If the tension of the wire rope is too great, the stop pawl 601 can be manually moved to loosen the ratchet 602, thereby loosening the wire rope. By repeatedly adjusting in the above manner, the wire rope can obtain the appropriate tension.

[0068] In addition, it should be noted that, in the embodiment described above, the first transmission member 2 is rotatably or turnably arranged on the main vehicle, and the first transmission member 2 can rotate, thereby driving the pulling member 1 to move. However, it is not limited to this. The first transmission member 2 can also be arranged on the main vehicle in a reciprocating manner, so that the reciprocating motion of the first transmission member 2 can drive the pulling member 1 to move.

[0069] An embodiment of the present application also provides an automobile, comprising the trailer air pipeline anti-loosening device described in any of the above embodiments, and thus has all the beneficial technical effects of the device, which will not be repeated here.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for preventing a trailer air pipeline from loosening, wherein the trailer air pipeline has a first pipeline arranged in a spiral shape, characterized in that: The trailer air pipeline anti-loosening device comprises: an actuating mechanism, which is arranged on the main vehicle; and a pulling member, one end of which is connected to the actuating mechanism, and the other end of which passes through a channel formed by the spiral arrangement of the first pipeline for connecting to the trailer; the actuating mechanism is configured to drive the pulling member to extend or retract, thereby tightening or relaxing the pulling member; the actuating mechanism comprises a driving device and a first transmission member; wherein the driving device and the first transmission member are arranged on the main vehicle, and the driving device can drive the first transmission member to rotate to tighten or relax the pulling member; the actuating mechanism also comprises An elastic member, one end of which is connected to the driving device, and the other end of which is connected to the first transmission member; when the main vehicle and the trailer are connected, the elastic member has a pre-tightening force that forces the first transmission member to rotate along a first direction to tension the pulling member; the pulling member has a storage state, and when the pulling member is separated from the trailer, the elastic member can drive the first transmission member to rotate along the first direction to be in the storage state; the driving device includes a motor, which is connected to the first transmission member and is used to drive the first transmission member to rotate.

2. The trailer air pipeline anti-loosening device according to claim 1, characterized in that: The driving device includes a driving member and a second transmission member; wherein the driving member is connected to the second transmission member and is used to drive the second transmission member to rotate; one end of the elastic member is connected to the second transmission member, and the other end of the elastic member is connected to the first transmission member.

3. The trailer air pipeline anti-loosening device according to claim 2, characterized in that: The trailer air pipeline anti-loosening device also includes an anti-reversal component, which is arranged between the second transmission member and the main vehicle and is used to make the second transmission member rotate unidirectionally along the first direction.

4. The trailer air pipeline anti-loosening device according to claim 3, characterized in that: The anti-reversal component includes a pawl and a ratchet; wherein the pawl is arranged on the main vehicle; the ratchet is arranged on the second transmission member, and the ratchet can rotate synchronously with the second transmission member; the pawl is mounted on the ratchet, and the pawl can make the ratchet rotate unidirectionally along the first direction.

5. The trailer air pipeline anti-loosening device according to claim 1, characterized in that: The trailer air pipeline anti-loosening device also includes a controller, a sensor and an alarm device arranged on the main vehicle; wherein the sensor, the alarm device and the drive device are respectively connected to the controller.

6. A car, characterized in that: The invention comprises the air pipeline anti-loosening device for a trailer according to any one of claims 1 to 5.

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