Locking device and vehicle

Abstract

The invention relates to a locking device and a vehicle, the locking device 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 the first connecting plate is used for connecting a front frame; the second connecting plate is connected with the steering wheel, the second connecting plate can rotate relative to the first connecting plate through the steering wheel, and the second connecting plate is used for being connected with 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 one is fixed to the second connecting plate. The two first limiting pieces are arranged in the circumferential direction of the first connecting plate. The first locking piece is at least provided with a first position and a second position which are arranged in the radial direction of the first connecting plate. According to the device, the operation can be automatically completed without manual operation in the reversing process and the operation process after the reversing is completed; after automatic locking, the reliable locking function can be quickly and easily achieved only by rotating a locking rocker arm of the manual locking device.

Description

Technical Field

[0001] The invention belongs to the technical field of locking a front frame and a rear frame, and in particular relates to a locking device and a vehicle. Background Art

[0002] When the vehicle is traveling forward, the locking device is in a non-working state, and the front frame and the rear frame can rotate relative to each other; when the vehicle is in a reverse state, the locking device is in a working state, and the locking device locks the relative rotation of the front frame and the rear frame, so that the rear frame follows the same motion trajectory as the front frame, thereby reducing the difficulty of reverse.

[0003] In the related art, when the vehicle is reversing, a locking device needs to be manually operated to lock the front frame and the rear frame, which is troublesome to operate. Summary of the invention

[0004] In order to solve the problems that the locking device of the steering system cannot be locked reliably when reversing under harsh working conditions, the operation is difficult, and the safety is low, the present invention provides a locking device and a vehicle, wherein the locking device can automatically lock the front frame and the rear frame.

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

[0006] Steering wheel;

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

[0008] a second connecting plate, the second connecting plate being connected to the steering wheel, the second connecting plate being rotatable relative to the first connecting plate via the steering wheel, and the second connecting plate being used to connect to the rear frame; and

[0009] The first locking module, the first locking module includes a power assembly, a first locking member and two first limiting members; one of the power assembly 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 along the circumference of 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, the first locking member is located between the two first limiting members along the circumference of the first connecting plate, when the first locking member is in the second position, the first locking member and the two first limiting members are misaligned along the radial direction of the first connecting plate, the power assembly 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 the present application, the two first limit 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 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 rotation connection point at any position between the two ends, and the locking lever is rotatably connected to the second connecting plate at the rotation connection point; the power source can be connected to the telescopic member, and the telescopic member can drive the locking lever to rotate around the rotation connection point when it is extended and retracted, thereby driving the first locking member to move between the first position and the second position; or,

[0011] The two first limit 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; the power source can be connected to the telescopic member, and when the telescopic member is extended or retracted, 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 the present application, the power assembly further includes:

[0013] A stop valve connected between the power source and the telescopic member;

[0014] A controller is used to obtain a reversing signal of the vehicle and generate a control instruction according to the reversing signal, wherein the control instruction is used to control the shut-off valve to be opened or shut-off.

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

[0016] The bracket is installed on the telescopic member, and when the power assembly is installed on the first connecting plate, the bracket is installed on the first connecting plate; when the power assembly is installed on the second connecting plate, the bracket is installed on the second connecting plate.

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

[0018] a second limiting member, the second limiting member being installed on one of the first connecting plate and the second connecting plate;

[0019] A second locking member, 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, the second locking member is mutually locked with the second limiting member in the first state to limit the relative rotation of the first connecting plate and the second connecting plate, and the first connecting plate and the second connecting plate can rotate relative to each other when the second locking member is in the second state.

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

[0021] A positioning lock, wherein the positioning lock is installed on the second locking member, and when the second locking member is installed on the first connecting plate, the positioning lock can limit the rotation of the second locking member relative to the first connecting plate when locked; when the second locking member is installed on the second connecting plate, the positioning lock can limit the rotation of the second locking member relative to the second connecting plate when locked.

[0022] In some embodiments of the present 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, and the positioning lock includes a guide member and a positioning rod, the guide member is installed on the first connecting plate, and the guide member has a guide hole; the positioning rod is slidably connected to the guide hole; wherein, when the second locking member is in the first state, the guide hole is connected to the first positioning hole, and the positioning rod can be simultaneously in the guide hole and the first positioning hole to limit the rotation of the second locking member relative to the first connecting plate; when the second locking member is in the second state, the guide hole is connected to the second positioning hole, and the positioning rod can be simultaneously in the guide hole and the second positioning hole to limit the rotation of the second locking member relative to the first connecting plate; or,

[0023] The second locking member is installed on the second connecting plate, and the second 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 second connecting plate, and the guide member has a guide hole; the positioning rod is slidably connected to the guide hole; wherein, when the second locking member is in the first state, the guide hole is connected to the first positioning hole, and the positioning rod can be simultaneously in the guide hole and the first positioning hole to limit the rotation of the second locking member relative to the second connecting plate; when the second locking member is in the second state, the guide hole is connected to the second positioning hole, and the positioning rod can be simultaneously in the guide hole and the second positioning hole to limit the rotation of the second locking member relative to the second connecting plate.

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

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

[0026] The main body is rotatably mounted on the first connecting plate when the second locking member is mounted on the first connecting plate; and the main body is rotatably mounted on the second connecting plate when the second locking member is mounted on the second connecting plate;

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

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

[0029] In a second aspect, an embodiment of the present application provides a vehicle, the vehicle comprising:

[0030] A locking device as described above;

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

[0032] A rear frame is connected 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 the present invention is composed of an automatic locking device and a manual locking device. The automatic locking device can be automatically completed without human operation during the operation process of reversing and after completing the reversing. Under harsh working conditions, after the automatic locking device is locked, a reliable locking function can be achieved quickly and easily by simply rotating the locking rocker arm of the manual locking device.

[0035] The present invention adopts a type of design that combines a pneumatic automatic reverse locking device and a latch type reverse locking device to design a connecting rod push-pull type full trailer reverse locking device. By optimizing the structures of the two locking devices, the advantages and disadvantages of the two locking devices complement each other, and meet the use requirements of the full trailer under different working conditions when reversing. The present invention has the advantages of high locking reliability, simple operation, high operator safety, strong anti-structural deformation ability of the locking device, etc., and has high practical use value. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0039] Figure 4 This is a schematic diagram of the connection between the gas source, the stop valve and the telescopic member in some embodiments of the present application.

[0040] Description of reference numerals:

[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 member; 3414. stop valve; 3415. bracket; 342. first locking member; 343. first limiting member; 35. second locking module; 351. second limiting member; 3511. limiting groove; 352. second locking member; 3521. main body; 3522. rocker arm; 3523. locking part; 353. positioning lock; 3531. guide member; 3532. positioning rod. DETAILED DESCRIPTION

[0042] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0043] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only 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 the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In order to solve the problems in the above-mentioned background technology, the present invention provides a locking device 30 and a vehicle. The locking device 30 can effectively overcome the locking torque applied by the ground.

[0047] First, please refer to Figure 1 to Figure 2 As shown, the embodiment of the present application 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 the first connecting plate 32 is used to connect to the front frame 10; the second connecting plate 33 is connected to the steering wheel 31, and the second connecting plate 33 can rotate relative to the first connecting plate 32 via the steering wheel 31, and 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 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 along the circumference of 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, the first locking member 342 is located between the two first limiting members 343 along the circumference of the first connecting plate 32. When the first locking member 342 is in the second position, the first locking member 342 and the two first limiting members 343 are misaligned along the radial direction of the first connecting plate 32. The power component 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 the present application, the first connecting plate 32 and the second connecting plate 33 are arranged opposite to each other, the steering wheel 31 is located between the first connecting plate 32 and the second connecting plate 33, and 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 the present application, the shape, size, and material of the first connecting plate 32 and the second connecting plate 33 are not limited.

[0049] The steering wheel 31 can be configured as 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 the present application, both of the two 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 the embodiments of the present application, the power assembly 341 drives the locking member to move between the first position and the 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 circumferential direction 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 forward and reverse directions), the first locking member 342 will abut against one of the opposite end faces of the two first limiting members 343 to limit the relative rotation of the first connecting plate 32 and the second connecting plate 33, thereby realizing the locking of 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 displaced from both of 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 limit the rotation of the first connecting plate 32 relative to the second connecting plate 33.

[0052] In some embodiments of the present 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 the present application, the two first limiting members 343 are installed on the first connecting plate 32, the 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, and 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, the other end is connected to the first locking member 342, and the locking lever 3411 has a rotation connection point at any position between the two end portions. The locking lever 3411 is rotatably connected to the second connecting plate 33 at the rotation connection point; the power source 3412 can be communicated with the telescopic member 3413. When the telescopic member 3413 expands and contracts, 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.

[0054] When the telescopic part 3413 is extended or retracted, it can drive the locking lever 3411. Specifically, when the telescopic part 3413 is extended, it can drive the locking lever 3411 to rotate along a first direction around the rotating connection point, thereby driving the locking block to move toward the first position. When the piston rod is contracted, it can drive the locking lever 3411 to rotate along a second direction around the rotating connection point, thereby driving the locking block to move toward the second position. The first direction and the second direction are opposite.

[0055] The telescopic member 3413 in the embodiment of the present application can be configured as any device with telescopic function such as a cylinder, an electric telescopic rod or an oil cylinder, and the power source 3412 needs to be configured as a different device according to the different telescopic members 3413. For example, when the telescopic member 3413 is a cylinder, the power source 3412 needs to be configured as a gas source such as a gas cylinder, and when the telescopic member 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 some other embodiments of the present application, two first limit members 343 are installed on the first connecting plate 32, the 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, and the 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, and the locking lever 3411 has a rotation connection point at any position between the two ends, and 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; the power source 3412 can be connected to the telescopic member 3413, and when the telescopic member 3413 is extended or retracted, 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 the present application, the power assembly 341 also includes a stop valve 3414 and a controller, and the stop valve 3414 is connected between the power source 3412 and the telescopic member 3413; the controller is used to obtain a reversing signal of the vehicle and generate a control instruction according to the reversing signal, and the control instruction is used to control the stop valve 3414 to open or close.

[0058] The controller generates a control instruction according to the vehicle's reversing signal, and the control instruction is used to control the shut-off valve 3414 to open or close. When the telescopic member 3413 is extended, it can drive the locking lever 3411 to rotate along the first direction around the rotating connection point, thereby driving the locking block to move toward the first position. When the piston rod contracts, it can drive the locking lever 3411 to rotate along the second direction around the rotating connection point, thereby driving the locking block to move toward the second position. The first direction and the second direction are opposite. The shut-off valve 3414 in the embodiment of the present application is configured as an electric normally closed valve. The normally closed shut-off valve 3414 switches to an open state after receiving a control signal, so that the high-pressure gas in the gas source enters the cylinder to move the first locking member 342 to the first position.

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

[0060] Please refer to Figure 1 and Figure 4 As shown, in some embodiments of the present application, the locking device 30 also includes a second locking module 35, the second locking module 35 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, the second locking member 352 is mutually locked with the second limiting member 351 in the first state to limit the relative rotation of the first connecting plate 32 and the second connecting plate 33, and the first connecting plate 32 and the second connecting plate 33 can rotate relative to each other when the second locking member 352 is in the second state.

[0061] The second locking member 352 is mutually locked with the second limiting member 351 in the first state. Since the second locking member 352 is fixed to the other one of the first connecting plate 32 and the second connecting plate 33, and the second limiting member 351 is fixed to the other one of the first connecting plate 32 and the second connecting plate 33, the second locking member 352 can limit the relative rotation of the first connecting plate 32 and the second connecting plate 33 when they are mutually locked with the second limiting member 351 in the first state; when the second locking member 352 is in the second state, the second locking member 352 and the second limiting member 351 cannot be mutually locked, 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 the present application, the second locking module 35 also 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 limit 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 limit the rotation of the second locking member 352 relative to the second connecting plate 33 when locked.

[0063] The positioning lock 353 can limit the second locking member 352 from switching between the first state and the second state. For example, when the second locking member 352 is in the first state, the positioning lock 353 limits the second locking member 352 from switching from the first state to the second state to ensure the mutual locking of the second locking member 352 and the second limiting member 351. Similarly, when the second locking member 352 is in the second state, the positioning lock 353 limits 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 being locked to each other.

[0064] Please refer to Figure 1 and Figure 4 As shown, in some embodiments of the present 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, and 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 the guide member 3531 has a guide hole; the positioning rod 3532 is slidably connected to the guide hole; wherein, 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 in the guide hole and the first positioning hole to limit 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 in the guide hole and the second positioning hole to limit 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, so as to limit 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, so as to limit 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 the present application, the second locking member 352 is installed on the second connecting plate 33, the second connecting plate 33 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 second connecting plate 33, the guide member 3531 has a guide hole; the positioning rod 3532 is slidably connected in the guide hole; wherein, 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 in the guide hole and the first positioning hole to limit 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 in the guide hole and the second positioning hole to limit 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 to limit 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 to limit 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 the present 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 in 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 with each other, the second locking member 352 is at least partially located in the limiting groove 3511 to achieve the mutual locking of 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 with each other, the second locking member 352 is located outside the limiting groove 351 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 the present application, the second locking member 352 includes a main body 3521, a rocker arm portion 3522 and a locking portion 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 portion 3522 is installed on the main body 3521; the locking portion 3523 is fixed to the main body 3521, and at least a portion of the locking portion 3523 can be located in the limiting groove 3511.

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

[0072] This patent is applied to the use scenario of off-road trailer reversing operation. When the vehicle needs to be reversed during use, the electrical principle of the automatic locking device is as follows: Figure 3 As shown. When the tractor is in reverse gear, the trailer electrical connector connected to the tractor electrical system receives an electrical signal from the tractor's reverse light, and gives a connected electrical signal to the normally closed solenoid valve through the trailer cable connected to the trailer electrical connector. At this time, the air source is connected to the cylinder through the air pipeline, and the cylinder works, pushing the locking lever and other mechanisms to make the reverse locking block enter between the two reverse limit blocks, realizing reverse automatic locking. The reverse automatic locking function is suitable for reverse conditions on hard roads with good road conditions.

[0073] like Figure 4 As shown, pull the positioning lock outward, rotate the locking rocker arm 90° counterclockwise, push the locking pin into the limiter, and snap the positioning lock into the positioning hole of the locking rocker arm fixing bracket to achieve the manual locking function. The reversing automatic locking + manual locking function is suitable for reversing locking under harsh working conditions. Under harsh working conditions, after completing the automatic locking function, a reliable locking function can be achieved quickly and easily by simply rotating the locking rocker arm. At the same time, the locking device has a certain ability to resist structural deformation. Even if the automatic locking structure or its installation working surface, frame support plate and other component structures undergo a certain deformation, the locking pin can still smoothly enter the limiter for effective locking. It meets the use requirements under different working conditions when the full trailer is reversing, has the advantages of simple operation, high operator safety, good locking reliability, etc., and has high practical use value.

[0074] In a second aspect, an embodiment of the present application provides a vehicle, the vehicle comprising 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 above-mentioned vehicle, due to the above-mentioned locking device 30, the vehicle in the embodiment of the present application can automatically lock the front frame 10 and the rear frame 20 when reversing, so as to facilitate the reversing of the vehicle.

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

Claims

1. A locking device, characterized in that: Applied to a vehicle, the vehicle comprises a front frame and a rear frame, and the locking device comprises: Steering wheel; A first connecting plate, the first connecting plate is connected to the steering wheel, and the first connecting plate is used to connect to the front frame; a second connecting plate, the second connecting plate being connected to the steering wheel, the second connecting plate being rotatable relative to the first connecting plate via the steering wheel, and the second connecting plate being used to connect to the rear frame; and The first locking module, the first locking module includes a power assembly, a first locking member and two first limiting members; one of the power assembly 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 along the circumference of 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, the first locking member is located between the two first limiting members along the circumference of the first connecting plate, when the first locking member is in the second position, the first locking member and the two first limiting members are misaligned along the radial direction of the first connecting plate, the power assembly 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.

2. A locking device according to claim 1, characterized in that: The two first limit 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 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 rotation connection point at any position between the two ends, and the locking lever is rotatably connected to the second connecting plate at the rotation connection point; the power source can be connected to the telescopic member, and the telescopic member can drive the locking lever to rotate around the rotation connection point when it is extended and retracted, thereby driving the first locking member to move between the first position and the second position; or, The two first limit 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; the power source can be connected to the telescopic member, and when the telescopic member is extended or retracted, 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 stop valve connected between the power source and the telescopic member; A controller is used to obtain a reversing signal of the vehicle and generate a control instruction according to the reversing signal, wherein the control instruction is used to control the shut-off valve to be opened or shut-off.

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

5. A locking device according to any one of claims 1 to 4, characterized in that: The locking device further includes a second locking module, wherein the second locking module includes: a second limiting member, the second limiting member being installed on one of the first connecting plate and the second connecting plate; A second locking member, 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, the second locking member is mutually locked with the second limiting member in the first state to limit the relative rotation of the first connecting plate and the second connecting plate, and the first connecting plate and the second connecting plate can rotate relative to each other when the second locking member is in the second state.

6. A locking device according to claim 5, characterized in that: The second locking module further includes: A positioning lock, wherein the positioning lock is installed on the second locking member, and when the second locking member is installed on the first connecting plate, the positioning lock can limit the rotation of the second locking member relative to the first connecting plate when locked; when the second locking member is installed on the second connecting plate, the positioning lock can limit the rotation of the second locking member relative to the second connecting plate when locked.

7. A locking device according to claim 6, characterized in that: 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, and the positioning lock includes a guide member and a positioning rod, the guide member is installed on the first connecting plate, and the guide member has a guide hole; the positioning rod is slidably connected to the guide hole; wherein, when the second locking member is in the first state, the guide hole is connected to the first positioning hole, and the positioning rod can be simultaneously located in the guide hole and the first positioning hole to limit the rotation of the second locking member relative to the first connecting plate; when the second locking member is in the second state, the guide hole is connected to the second positioning hole, and the positioning rod can be simultaneously located in the guide hole and the second positioning hole to limit the rotation of the second locking member relative to the first connecting plate; or, The second locking member is installed on the second connecting plate, and the second 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 second connecting plate, and the guide member has a guide hole; the positioning rod is slidably connected to the guide hole; wherein, when the second locking member is in the first state, the guide hole is connected to the first positioning hole, and the positioning rod can be simultaneously in the guide hole and the first positioning hole to limit the rotation of the second locking member relative to the second connecting plate; when the second locking member is in the second state, the guide hole is connected to the second positioning hole, and the positioning rod can be simultaneously in the guide hole and the second positioning hole to limit the rotation of the second locking member relative to the second connecting plate.

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

9. A locking device according to claim 8, characterized in that: The second locking member comprises: The main body is rotatably mounted on the first connecting plate when the second locking member is mounted on the first connecting plate; and the main body is rotatably mounted on the second connecting plate when the second locking member is mounted on the second connecting plate; a rocker arm portion, the rocker arm portion being mounted on the main body portion; and A locking portion is fixed to the main body, and at least a portion of the locking portion can be located in the limiting groove.

10. A vehicle, characterized in that: The vehicle comprises: The locking device according to any one of claims 1 to 9; a front frame connected to one of the first connecting plate and the second connecting plate; and A rear frame is connected to the other of the first connecting plate and the second connecting plate.

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