Locking device and vehicle

Abstract

The application relates to a locking device and a vehicle, which comprises a steering wheel, a first connecting plate, a second connecting plate and a first locking module, the first connecting plate is connected with the steering wheel and is used for connecting a front frame; the second connecting plate is connected with the steering wheel and can rotate relative to the first connecting plate through the steering wheel and is used for connecting a rear frame; the first locking module comprises a power assembly, a first locking piece and two first limiting pieces; one of the power assembly and the two first limiting pieces is fixed to the first connecting plate, and the other is fixed to the second connecting plate; the two first limiting pieces are arranged along the circumference of the first connecting plate; and the first locking piece has at least a first position and a second position arranged along the radial direction of the first connecting plate. The device can be automatically completed without personnel operation during reversing and the operation process after the reversing is completed; after automatic locking, only by rotating the locking rocker arm of the manual locking device, reliable locking function can be quickly and easily achieved.

Description

Technical Field

[0001] This invention belongs to the field of front and rear frame locking technology, and particularly relates to a locking device and a vehicle. Background Technology

[0002] When the vehicle is traveling forward, the locking device is in a non-operating state, and the front frame and rear frame can rotate relative to each other. When the vehicle is reversing, the locking device is in an operating state, locking the relative rotation of the front frame and rear frame, so that the rear frame moves along the same trajectory as the front frame, thereby reducing the difficulty of reversing.

[0003] In related technologies, when a vehicle is reversing, a locking device needs to be manually operated to lock the front and rear frames, which is cumbersome. Summary of the Invention

[0004] To address the problems of unreliable locking of the steering system locking device, high operational difficulty, and low safety when reversing under harsh working conditions, this invention provides a locking device and vehicle that can automatically lock the front and rear frames.

[0005] In a first aspect, the present invention provides a locking device applied to a vehicle, the vehicle including a front frame and a rear frame, the locking device comprising:

[0006] Steering wheel;

[0007] A first connecting plate is connected to the steering wheel and is also used to connect to the front frame;

[0008] A second connecting plate, which is connected to the steering wheel, is rotatable relative to the first connecting plate via the steering wheel, and is used to connect to the rear frame; and...

[0009] A first locking module includes a power component, a first locking member, and two first limiting members. One of the power component and the two first limiting members is fixed to the first connecting plate, and the other is fixed to the second connecting plate. The two first limiting members are arranged circumferentially along the first connecting plate. The first locking member has at least a first position and a second position arranged radially along the first connecting plate. When the first locking member is in the first position, it is located between the two first limiting members circumferentially along the first connecting plate. When the first locking member is in the second position, it is misaligned with both first limiting members radially along the first connecting plate. The power component is movably connected to the first locking member and can drive the first locking member to move between the first position and the second position.

[0010] In some embodiments of this application, the two first limiting members are mounted on the first connecting plate, the power assembly is mounted on the second connecting plate, the power assembly includes a locking lever and a power source, and the telescopic member is mounted on the second connecting plate; one end of the locking lever is rotatably connected to the telescopic member, and the other end is connected to the first locking member, and the locking lever has a rotational connection point at any position between its two ends, and the locking lever is rotatably connected to the second connecting plate at the rotational connection point; the power source can be connected to the telescopic member, and when the telescopic member extends or retracts, it can drive the locking lever to rotate around the rotational connection point, thereby driving the first locking member to move between the first position and the second position; or,

[0011] The two first limiting members are installed on the first connecting plate, the power assembly is installed on the second connecting plate, the power assembly includes a locking lever and a power source, and the telescopic member is installed on the first connecting plate; one end of the locking lever is rotatably connected to the telescopic member, and the other end is connected to the first locking member, and the locking lever has a rotation connection point at any position between the two ends, and the locking lever is rotatably connected to the first connecting plate at the rotation connection point; the power source can be connected to the telescopic member; when the telescopic member extends or retracts, it can drive the locking lever to rotate around the rotation connection point, thereby driving the first locking member to move between the first position and the second position.

[0012] In some embodiments of this application, the power assembly further includes:

[0013] A shut-off valve, which is connected between the power source and the telescopic component;

[0014] The controller is used to acquire the reversing signal of the vehicle and generate control commands based on the reversing signal, the control commands being used to control the shut-off valve to open or close.

[0015] In some embodiments of this application, the power assembly further includes:

[0016] The bracket, the telescopic component is mounted on the bracket, the bracket is mounted on the first connecting plate when the power component is mounted on the first connecting plate, and the bracket is mounted on the second connecting plate when the power component is mounted on the second connecting plate.

[0017] In some embodiments of this application, the locking device further includes a second locking module, the second locking module comprising:

[0018] The second limiting member is installed on one of the first connecting plate and the second connecting plate;

[0019] The second locking member is rotatably mounted on the other of the first connecting plate and the second connecting plate. The second locking member has at least a first state and a second state. In the first state, the second locking member locks itself with the second limiting member to restrict the relative rotation of the first connecting plate and the second connecting plate. In the second state, the first connecting plate and the second connecting plate can rotate relative to each other.

[0020] In some embodiments of this application, the second locking module further includes:

[0021] A positioning lock is installed on the second locking member. When the second locking member is installed on the first connecting plate, the positioning lock can restrict the rotation of the second locking member relative to the first connecting plate when it is locked. When the second locking member is installed on the second connecting plate, the positioning lock can restrict the rotation of the second locking member relative to the second connecting plate when it is locked.

[0022] In some embodiments of this application, when the second locking member is installed on the first connecting plate, the first connecting plate has a first positioning hole and a second positioning hole. The positioning lock includes a guide member and a positioning rod. The guide member is installed on the first connecting plate and has a guide hole. The positioning rod is slidably connected within the guide hole. Wherein, when the second locking member is in a first state, the guide hole communicates with the first positioning hole, and the positioning rod can simultaneously be located within both the guide hole and the first positioning hole to restrict the rotation of the second locking member relative to the first connecting plate; when the second locking member is in a second state, the guide hole communicates with the second positioning hole, and the positioning rod can simultaneously be located within both the guide hole and the second positioning hole to restrict the rotation of the second locking member relative to the first connecting plate; or...

[0023] The second locking member is mounted on the second connecting plate, which has a first positioning hole and a second positioning hole. The positioning lock includes a guide member and a positioning rod. The guide member is mounted on the second connecting plate and has a guide hole. The positioning rod is slidably connected within the guide hole. When the second locking member is in a first state, the guide hole communicates with the first positioning hole, and the positioning rod can be simultaneously located within both the guide hole and the first positioning hole to restrict the rotation of the second locking member relative to the second connecting plate. When the second locking member is in a second state, the guide hole communicates with the second positioning hole, and the positioning rod can be simultaneously located within both the guide hole and the second positioning hole to restrict the rotation of the second locking member relative to the second connecting plate.

[0024] In some embodiments of this application, the second limiting member has a limiting groove, the depth direction of which is parallel to the moving direction of the first locking block, and the second locking member is partially located within the limiting groove.

[0025] In some embodiments of this application, the second locking member includes:

[0026] When the second locking member is installed on the first connecting plate, the main body is rotatably installed on the first connecting plate; when the second locking member is installed on the second connecting plate, the main body is rotatably installed on the second connecting plate.

[0027] A rocker arm portion, said rocker arm portion being mounted on the main body portion; and,

[0028] A locking part is fixed to the main body part, and at least part of the locking part can be located within the limiting groove.

[0029] Secondly, embodiments of this application provide a vehicle, the vehicle comprising:

[0030] The locking device as described above;

[0031] A front frame, the front frame being connected to one of the first connecting plate and the second connecting plate; and,

[0032] The rear frame connects to the other of the first connecting plate and the second connecting plate.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] The locking device of this invention consists of two parts: an automatic locking device and a manual locking device. The automatic locking device operates automatically during reversing and after reversing, without requiring manual intervention. Under harsh conditions, after the automatic locking device engages, reliable locking can be achieved quickly and easily simply by rotating the locking arm of the manual locking device.

[0035] This invention combines a pneumatic automatic reversing lock device and a pin-type reversing lock device to design a linkage push-pull type full trailer reversing lock device. By optimizing the structure of the two locking devices, the advantages and disadvantages of the two locking devices are complemented, meeting the usage requirements of full trailers under different working conditions when reversing. It has the advantages of high locking reliability, simple operation, high operator safety, and strong resistance to structural deformation, and has high practical application value. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the front frame, rear frame and locking device after connection in some embodiments of this application;

[0037] Figure 2 This is a partial structural schematic diagram of the first locking module in some embodiments of this application;

[0038] Figure 3 This is a schematic diagram of the structure of the first connecting plate, the second connecting plate, and the second locking module after connection in some embodiments of this application;

[0039] Figure 4 This is a schematic diagram showing the connection of the air source, shut-off valve, and telescopic component in some embodiments of this application.

[0040] Explanation of reference numerals in the attached figures:

[0041] 10. Front frame; 20. Rear frame; 30. Locking device; 31. Steering wheel; 32. First connecting plate; 33. Second connecting plate; 34. First locking module; 341. Power assembly; 3411. Locking lever; 3412. Power source; 3413. Telescopic component; 3414. Shut-off valve; 3415. Bracket; 342. First locking component; 343. First limiting component; 35. Second locking module; 351. Second limiting component; 3511. Limiting groove; 352. Second locking component; 3521. Main body; 3522. Rocker arm; 3523. Locking part; 353. Positioning lock; 3531. Guide component; 3532. Positioning rod. Detailed Implementation

[0042] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0043] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention 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 invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] To address the problems mentioned above, the present invention provides a locking device 30 and a vehicle, which can effectively overcome the locking torque applied by the ground.

[0047] Firstly, please refer to Figures 1 to 2 As shown, this application embodiment provides a locking device 30, which is applied to a vehicle. The vehicle includes a front frame 10 and a rear frame 20. The locking device 30 includes a steering wheel 31, a first connecting plate 32, a second connecting plate 33, and a first locking module 34. The first connecting plate 32 is connected to the steering wheel 31 and is used to connect to the front frame 10. The second connecting plate 33 is connected to the steering wheel 31 and can rotate relative to the first connecting plate 32 via the steering wheel 31. The second connecting plate 33 is used to connect to the rear frame 20. The first locking module 34 includes a power assembly 341, a first locking member 342, and two first limiting members 343. The power assembly 341 and the two first limiting members... One of the first limiting members 343 is fixed to the first connecting plate 32, and the other is fixed to the second connecting plate 33; the two first limiting members 343 are arranged circumferentially along the first connecting plate 32; the first locking member 342 has at least a first position and a second position arranged radially along the first connecting plate 32. When the first locking member 342 is in the first position, it is located between the two first limiting members 343 along the circumferential direction of the first connecting plate 32. When the first locking member 342 is in the second position, it is misaligned with both the first locking member 343 along the radial direction of the first connecting plate 32. The power assembly 341 is movably connected to the first locking member 342 and can drive the first locking member 342 to move between the first position and the second position.

[0048] In some embodiments of this application, the first connecting plate 32 and the second connecting plate 33 are disposed opposite to each other, and the steering wheel 31 is located between the first connecting plate 32 and the second connecting plate 33. The first connecting plate 32 and the second connecting plate 33 are respectively connected to the two ends of the steering wheel 31. In the embodiments of this application, there are no limitations on the shape, size, and material of the first connecting plate 32 and the second connecting plate 33.

[0049] The steering wheel 31 can be configured with various types of bearings. One of the first connecting plate 32 and the second connecting plate 33 is connected to the outer ring of the bearing, and the other is connected to the inner ring of the bearing. At this time, the first connecting plate 32 can rotate relative to the second connecting plate 33 via the steering wheel 31.

[0050] In some embodiments of this application, both first limiting members 343 are configured as limiting blocks, and the first locking member 342 is configured as a locking block.

[0051] Based on the locking device 30 of this application embodiment, the power component 341 drives the locking member to move in a first position and a second position. When the locking member is in the first position, the first locking member 342 is located between the two first limiting members 343 along the circumference of the first connecting plate 32. Thus, when the first connecting plate 32 rotates relative to the second connecting plate 33 (it can be understood that the first connecting plate 32 can rotate relative to the second connecting plate 33 in both positive and negative directions), the first locking member 342 will abut against the two first limiting members 343. One of the end faces is used to restrict the relative rotation of the first connecting plate 32 and the second connecting plate 33, thereby locking the front frame 10 and the rear frame 20. When the first locking member 342 is in the second position, the first locking member 342 is misaligned with the two first limiting members 343 along the radial direction of the first connecting plate 32. At this time, when the first connecting plate 32 rotates relative to the second connecting plate 33, the first locking member 342 cannot contact the two first limiting members 343, and naturally cannot restrict the rotation of the first connecting plate 32 relative to the second connecting plate 33.

[0052] In some embodiments of this application, the force applied by the power assembly 341 to the first locking member 342 is perpendicular to the arrangement direction of the two first limiting members 343.

[0053] Please refer to Figures 1 to 3 As shown, in some embodiments of this application, two first limiting members 343 are installed on the first connecting plate 32, and a power assembly 341 is installed on the second connecting plate 33. The power assembly 341 includes a locking lever 3411 and a power source 3412. A telescopic member 3413 is installed on the second connecting plate 33. One end of the locking lever 3411 is rotatably connected to the telescopic member 3413, and the other end is connected to the first locking member 342. The locking lever 3411 has a rotating connection point at any position between its two ends. The locking lever 3411 is rotatably connected to the second connecting plate 33 at the rotating connection point. The power source 3412 can be connected to the telescopic member 3413. When the telescopic member 3413 extends or retracts, it can drive the locking lever 3411 to rotate around the rotating connection point, thereby driving the first locking member 342 to move between the first position and the second position.

[0054] When the telescopic member 3413 extends or retracts, it can drive the locking lever 3411. Specifically, when the telescopic member 3413 extends, it can drive the locking lever 3411 to rotate around the rotation connection point in the first direction, thereby driving the locking block to move toward the first position. When the piston rod retracts, it can drive the locking lever 3411 to rotate around the rotation connection point in the second direction, thereby driving the locking block to move toward the second position. The positions of the first direction and the second direction are opposite.

[0055] In this embodiment, the telescopic component 3413 can be configured as any device with telescopic function, such as a cylinder, an electric telescopic rod, or a hydraulic cylinder. Depending on the telescopic component 3413, the power source 3412 also needs to be configured as a different device. For example, when the telescopic component 3413 is a cylinder, the power source 3412 needs to be configured as an air source such as an air storage cylinder; when the telescopic component 3413 is configured as an electric telescopic rod, the power source 3412 needs to be configured as a power supply device such as a battery.

[0056] In other embodiments of this application, two first limiting members 343 are installed on the first connecting plate 32, and a power assembly 341 is installed on the second connecting plate 33. The power assembly 341 includes a locking lever 3411 and a power source 3412. A telescopic member 3413 is installed on the first connecting plate 32. One end of the locking lever 3411 is rotatably connected to the telescopic member 3413, and the other end is connected to the first locking member 342. The locking lever 3411 has a rotation connection point at any position between its two ends. The locking lever 3411 is rotatably connected to the first connecting plate 32 at the rotation connection point. The power source 3412 can be connected to the telescopic member 3413. When the telescopic member 3413 extends or retracts, it can drive the locking lever 3411 to rotate around the rotation connection point, thereby driving the first locking member 342 to move between the first position and the second position.

[0057] Please refer to Figures 1 to 3 As shown, in some embodiments of this application, the power assembly 341 further includes a shut-off valve 3414 and a controller. The shut-off valve 3414 is connected between the power source 3412 and the telescopic member 3413. The controller is used to acquire the reversing signal of the vehicle and generate control commands based on the reversing signal. The control commands are used to control the shut-off valve 3414 to open or close.

[0058] The controller generates control commands based on the vehicle's reversing signal. These commands are used to control the opening or closing of the shut-off valve 3414. When the telescopic member 3413 extends, it can drive the locking lever 3411 to rotate around the rotation connection point in the first direction, thereby moving the locking block toward the first position. When the piston rod retracts, it can drive the locking lever 3411 to rotate around the rotation connection point in the second direction, thereby moving the locking block toward the second position. The first and second directions are opposite. In this embodiment, the shut-off valve 3414 is configured as an electrically operated normally closed valve. After receiving the control signal, the normally closed shut-off valve 3414 switches to the open state, allowing the high-pressure gas in the gas source to enter the cylinder and move the first locking member 342 to the first position.

[0059] In some embodiments of this application, the power assembly 341 further includes a bracket 3415, a telescopic member 3413 is mounted on the bracket 3415, the bracket 3415 is mounted on the first connecting plate 32 when the power assembly 341 is mounted on the first connecting plate 32, and the bracket 3415 is mounted on the second connecting plate 33 when the power assembly 341 is mounted on the second connecting plate 33.

[0060] Please refer to Figure 1 and Figure 4 As shown, in some embodiments of this application, the locking device 30 further includes a second locking module 35, which includes a second limiting member 351 and a second locking member 352. The second limiting member 351 is installed on one of the first connecting plate 32 and the second connecting plate 33; the second locking member 352 is rotatably installed on the other of the first connecting plate 32 and the second connecting plate 33. The second locking member 352 has at least a first state and a second state. In the first state, the second locking member 352 is locked to the second limiting member 351 to restrict the relative rotation of the first connecting plate 32 and the second connecting plate 33. In the second state, the first connecting plate 32 and the second connecting plate 33 can rotate relative to each other.

[0061] In the first state, the second locking member 352 is locked to the second limiting member 351. Since the second locking member 352 is fixed to the other of the first connecting plate 32 and the second connecting plate 33, and the second limiting member 351 is fixed to the other of the first connecting plate 32 and the second connecting plate 33, the second locking member 352 can restrict the relative rotation of the first connecting plate 32 and the second connecting plate 33 when it is locked to the second limiting member 351 in the first state. In the second state, the second locking member 352 and the second limiting member 351 are not locked to each other, and the first connecting plate 32 and the second connecting plate 33 can naturally rotate relative to each other.

[0062] Please refer to Figure 1 and Figure 4As shown, in some embodiments of this application, the second locking module 35 further includes a positioning lock 353, which is installed on the second locking member 352. When the second locking member 352 is installed on the first connecting plate 32, the positioning lock 353 can restrict the rotation of the second locking member 352 relative to the first connecting plate 32 when locked; when the second locking member 352 is installed on the second connecting plate 33, the positioning lock 353 can restrict the rotation of the second locking member 352 relative to the second connecting plate 33 when locked.

[0063] The positioning lock 353 can restrict the second locking member 352 from switching between a first state and a second state. For example, when the second locking member 352 is in the first state, the positioning lock 353 restricts the second locking member 352 from switching from the first state to the second state to ensure that the second locking member 352 and the second limiting member 351 are mutually locked. Similarly, when the second locking member 352 is in the second state, the positioning lock 353 restricts the second locking member 352 from switching from the second state to the first state to prevent the second locking member 352 and the second limiting member 351 from mutually locking.

[0064] Please refer to Figure 1 and Figure 4 As shown in some embodiments of this application, when the second locking member 352 is installed on the first connecting plate 32, the first connecting plate 32 has a first positioning hole and a second positioning hole. The positioning lock 353 includes a guide member 3531 and a positioning rod 3532. The guide member 3531 is installed on the first connecting plate 32 and has a guide hole. The positioning rod 3532 is slidably connected in the guide hole. When the second locking member 352 is in the first state, the guide hole is connected to the first positioning hole, and the positioning rod 3532 can be simultaneously located in the guide hole and the first positioning hole to restrict the rotation of the second locking member 352 relative to the first connecting plate 32. When the second locking member 352 is in the second state, the guide hole is connected to the second positioning hole, and the positioning rod 3532 can be simultaneously located in the guide hole and the second positioning hole to restrict the rotation of the second locking member 352 relative to the first connecting plate 32.

[0065] When the positioning member is in the first state, the positioning rod 3532 of the positioning lock 353 can slide in the guide hole, so that the positioning rod 3532 can be simultaneously in the guide hole and the first positioning hole, thereby restricting the rotation of the positioning lock 353 relative to the first connecting plate 32, so that the positioning lock 353 is in the first state; when the positioning member is in the second state, the positioning rod 3532 of the positioning lock 353 can slide in the guide hole, so that the positioning rod 3532 can be simultaneously in the guide hole and the second positioning hole, thereby restricting the rotation of the positioning lock 353 relative to the first connecting plate 32, so that the positioning lock 353 is in the second state.

[0066] In some other embodiments of this application, the second locking member 352 is mounted on the second connecting plate 33, which has a first positioning hole and a second positioning hole. The positioning lock 353 includes a guide member 3531 and a positioning rod 3532. The guide member 3531 is mounted on the second connecting plate 33 and has a guide hole. The positioning rod 3532 is slidably connected in the guide hole. When the second locking member 352 is in the first state, the guide hole is connected to the first positioning hole, and the positioning rod 3532 can be simultaneously located in the guide hole and the first positioning hole to restrict the rotation of the second locking member 352 relative to the second connecting plate 33. When the second locking member 352 is in the second state, the guide hole is connected to the second positioning hole, and the positioning rod 3532 can be simultaneously located in the guide hole and the second positioning hole to restrict the rotation of the second locking member 352 relative to the second connecting plate 33.

[0067] When the positioning lock 353 is in the first state, the positioning rod 3532 of the positioning lock 353 can slide in the guide hole, so that the positioning rod 3532 can be simultaneously in the guide hole and the first positioning hole, thereby restricting the rotation of the positioning lock 353 relative to the second connecting plate 33, so that the positioning lock 353 is in the first state; when the positioning member is in the second state, the positioning rod 3532 of the positioning lock 353 can slide in the guide hole, so that the positioning rod 3532 can be simultaneously in the guide hole and the second positioning hole, thereby restricting the rotation of the positioning lock 353 relative to the second connecting plate 33, so that the positioning lock 353 is in the second state.

[0068] Please refer to Figure 1 and Figure 4 As shown, in some embodiments of this application, the second limiting member 351 has a limiting groove 3511, the depth direction of the limiting groove 3511 is parallel to the moving direction of the first locking block, and the second locking member 352 is partially located within the limiting groove 3511.

[0069] The second limiting member 351 has a limiting groove 3511. When the second locking member 352 and the second limiting member 351 are locked together, the second locking member 352 is at least partially located within the limiting groove 3511 to achieve mutual locking between the second locking member 352 and the second limiting member 351. When the second locking member 352 and the second limiting member 351 are not locked together, the second locking member 352 is located outside the limiting groove 3511 to disengage the second locking member 352 and the second limiting member 351 from each other.

[0070] Please refer to Figure 1 and Figure 4As shown, in some embodiments of this application, the second locking member 352 includes a main body 3521, a rocker arm 3522, and a locking part 3523. When the second locking member 352 is installed on the first connecting plate 32, the main body 3521 is rotatably installed on the first connecting plate 32. When the second locking member 352 is installed on the second connecting plate 33, the main body 3521 is rotatably installed on the second connecting plate 33. The rocker arm 3522 is installed on the main body 3521. The locking part 3523 is fixed to the main body 3521, and at least part of the locking part 3523 can be located within the limiting groove 3511.

[0071] The user can apply external force to the rocker arm 3522 to make the main body 3521 rotate relative to the first connecting plate 32 and the second connecting plate 33, thereby making the locking part 3523 either in the limiting groove 3511 or outside the limiting groove 3511. That is, the second locking member 352 in this embodiment is in manual mode.

[0072] This patent applies to the use of off-road trailers for reversing operations. When reversing is required during vehicle use, the electrical principle of its automatic locking device is as follows: Figure 3 As shown. When the tractor unit is in reverse gear, the trailer electrical connector, which is connected to the tractor unit's electrical system, receives an electrical signal from the tractor unit's reverse lights. This signal is transmitted to the normally closed solenoid valve via the trailer cable connected to the trailer electrical connector. At this time, the air supply is connected to the cylinder through the air pipe, causing the cylinder to operate and push the locking lever and other mechanisms to move the reverse locking block between the two reverse limit blocks, thus achieving automatic reversing locking. The automatic reversing locking function is suitable for reversing on hard surfaces with good road conditions.

[0073] like Figure 4 As shown, pull the positioning lock outwards and rotate the locking rocker arm counterclockwise by 90° to push the locking pin into the limiter. The positioning lock then engages with the positioning hole of the locking rocker arm fixing bracket, thus achieving the manual locking function. The automatic locking + manual locking function is suitable for reversing under harsh working conditions. Under harsh working conditions, after the automatic locking function is completed, a reliable locking function can be quickly and easily achieved by simply rotating the locking rocker arm. Simultaneously, the locking device has a certain resistance to structural deformation. Even if the automatic locking structure or its mounting surface, frame support plate, or other components undergo some deformation, the locking pin can still smoothly enter the limiter for effective locking. This meets the usage needs of full trailers under different working conditions during reversing, and has advantages such as simple operation, high operator safety, and good locking reliability, making it highly valuable in practical use.

[0074] Secondly, embodiments of this application provide a vehicle, which includes a front frame 10, a rear frame 20, and a locking device 30 as described above; the front frame 10 is connected to one of a first connecting plate 32 and a second connecting plate 33; the rear frame 20 is connected to the other of the first connecting plate 32 and the second connecting plate 33.

[0075] Based on the vehicle described above, due to the aforementioned locking device 30, the vehicle in this embodiment can automatically lock the front frame 10 and the rear frame 20 when reversing, so as to facilitate reversing the vehicle.

[0076] The embodiments given above are preferred examples for implementing the present invention, and the present invention is not limited to the above embodiments. Any non-essential additions or substitutions made by those skilled in the art based on the technical features of the present invention are within the protection scope of the present invention.

Claims

1. A locking device, characterized in that, Applied to a vehicle, the vehicle including a front frame and a rear frame, the locking device includes: Steering wheel; A first connecting plate is connected to the steering wheel and is also used to connect to the front frame; A second connecting plate, which is connected to the steering wheel, is rotatable relative to the first connecting plate via the steering wheel, and is used to connect to the rear frame; and... A first locking module includes a power component, a first locking member, and two first limiting members. One of the power component and the two first limiting members is fixed to the first connecting plate, and the other is fixed to the second connecting plate. The two first limiting members are arranged circumferentially along the first connecting plate. The first locking member has at least a first position and a second position arranged radially along the first connecting plate. When the first locking member is in the first position, it is located between the two first limiting members circumferentially along the first connecting plate. When the first locking member is in the second position, it is misaligned with both the first locking member and the two first limiting members radially along the first connecting plate. The power component is movably connected to the first locking member and can drive the first locking member to move between the first position and the second position. The locking device further includes a second locking module, the second locking module comprising: The second limiting member is installed on one of the first connecting plate and the second connecting plate; The second locking member is rotatably mounted on the other of the first connecting plate and the second connecting plate. The second locking member has at least a first state and a second state. In the first state, the second locking member locks itself with the second limiting member to restrict the relative rotation of the first connecting plate and the second connecting plate. In the second state, the first connecting plate and the second connecting plate can rotate relative to each other. The second locking module also includes: A positioning lock is installed on the second locking member. When the second locking member is installed on the first connecting plate, the positioning lock can restrict the rotation of the second locking member relative to the first connecting plate when it is locked; when the second locking member is installed on the second connecting plate, the positioning lock can restrict the rotation of the second locking member relative to the second connecting plate when it is locked. When the second locking member is installed on the first connecting plate, the first connecting plate has a first positioning hole and a second positioning hole. The positioning lock includes a guide member and a positioning rod. The guide member is installed on the first connecting plate and has a guide hole. The positioning rod is slidably connected within the guide hole. When the second locking member is in a first state, the guide hole communicates with the first positioning hole, and the positioning rod can simultaneously be located within both the guide hole and the first positioning hole to restrict the rotation of the second locking member relative to the first connecting plate. When the second locking member is in a second state, the guide hole communicates with the second positioning hole, and the positioning rod can simultaneously be located within both the guide hole and the second positioning hole to restrict the rotation of the second locking member relative to the first connecting plate. Or... The second locking member is mounted on the second connecting plate, which has a first positioning hole and a second positioning hole. The positioning lock includes a guide member and a positioning rod. The guide member is mounted on the second connecting plate and has a guide hole. The positioning rod is slidably connected within the guide hole. When the second locking member is in a first state, the guide hole communicates with the first positioning hole, and the positioning rod can be simultaneously located within both the guide hole and the first positioning hole to restrict the rotation of the second locking member relative to the second connecting plate. When the second locking member is in a second state, the guide hole communicates with the second positioning hole, and the positioning rod can be simultaneously located within both the guide hole and the second positioning hole to restrict the rotation of the second locking member relative to the second connecting plate.

2. The locking device according to claim 1, characterized in that, The two first limiting members are mounted on the first connecting plate, and the power assembly is mounted on the second connecting plate. The power assembly includes a locking lever, a telescopic member, and a power source. The telescopic member is mounted on the second connecting plate. One end of the locking lever is rotatably connected to the telescopic member, and the other end is connected to the first locking member. The locking lever has a rotating connection point at any position between its two ends, and the locking lever is rotatably connected to the second connecting plate at the rotating connection point. The power source can be connected to the telescopic member. When the telescopic member extends or retracts, it can drive the locking lever to rotate around the rotating connection point, thereby driving the first locking member to move between the first position and the second position; or... The two first limiting members are installed on the second connecting plate, and the power assembly is installed on the first connecting plate. The power assembly includes a locking lever, a telescopic member, and a power source. The telescopic member is installed on the first connecting plate. One end of the locking lever is rotatably connected to the telescopic member, and the other end is connected to the first locking member. The locking lever has a rotation connection point at any position between its two ends, and the locking lever is rotatably connected to the first connecting plate at the rotation connection point. The power source can be connected to the telescopic member. When the telescopic member extends or retracts, it can drive the locking lever to rotate around the rotation connection point, thereby driving the first locking member to move between the first position and the second position.

3. A locking device according to claim 2, characterized in that, The power assembly also includes: A shut-off valve, which is connected between the power source and the telescopic component; The controller is used to acquire the reversing signal of the vehicle and generate control commands based on the reversing signal, the control commands being used to control the shut-off valve to open or close.

4. A locking device according to claim 2, characterized in that, The power assembly also includes: The bracket, the telescopic component is mounted on the bracket, the bracket is mounted on the first connecting plate when the power component is mounted on the first connecting plate, and the bracket is mounted on the second connecting plate when the power component is mounted on the second connecting plate.

5. A locking device according to claim 1, characterized in that: The second limiting member has a limiting groove, the depth direction of which is parallel to the moving direction of the first locking member, and the second locking member is partially located within the limiting groove.

6. A locking device according to claim 5, characterized in that, The second locking element includes: When the second locking member is installed on the first connecting plate, the main body is rotatably installed on the first connecting plate; when the second locking member is installed on the second connecting plate, the main body is rotatably installed on the second connecting plate. A rocker arm portion, said rocker arm portion being mounted on the main body portion; and, A locking part is fixed to the main body part, and at least part of the locking part can be located within the limiting groove.

7. A vehicle, characterized in that, The vehicles include: The locking device as described in any one of claims 1-6; A front frame, the front frame being connected to one of the first connecting plate and the second connecting plate; and, The rear frame connects to the other of the first connecting plate and the second connecting plate.

Images