Locking device and vehicle

Abstract

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 being connected with 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 utility model belongs to front frame and rear frame locking technical field, especially relate to a locking device and vehicle. BACKGROUND

[0002] When the vehicle is driving 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 reversing 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 reversing.

[0003] In the related art, the locking device needs to be manually operated to lock the front frame and the rear frame when the vehicle is reversing, which is troublesome. INVENTION CONTENTS

[0004] To solve the problems of unreliable locking of the steering system locking device, great operation difficulty and low safety in adverse working conditions when reversing, the utility model provides a locking device and a vehicle, which can automatically lock the front frame and the rear frame.

[0005] In a first aspect, the utility model provides a locking device applied to a vehicle, wherein the vehicle comprises a front frame and a rear frame, and the locking device comprises:

[0006] A steering wheel;

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

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

[0009] A first locking module, which comprises a power assembly, a first locking piece and two first limit pieces; one of the power assembly and the two first limit pieces is fixed to the first connecting plate, and the other is fixed to the second connecting plate; the two first limit pieces are arranged along the circumference of the first connecting plate; the first locking piece has at least a first position and a second position arranged along the radial direction of the first connecting plate; when the first locking piece is in the first position, it is located between the two first limit pieces along the circumference of the first connecting plate; when the first locking piece is in the second position, it is misaligned with the two first limit pieces along the radial direction of the first connecting plate; the power assembly is movably connected to the first locking piece and can drive the first locking piece to move between the first position and the second position.

[0010] In some embodiments of the present 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 comprises 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 rotationally connected to the telescopic member, the other end of the locking lever is connected to the first locking member, the locking lever has a rotation connection point at any position between the two ends, and the locking lever is rotationally connected to the second connecting plate at the rotation connection point; the power source is in communication with the telescopic member, and when the telescopic member is retracted or extended, the locking lever is driven to rotate around the rotation 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 mounted on the first connecting plate, the power assembly is mounted on the second connecting plate, the power assembly comprises a locking lever and a power source, and the telescopic member is mounted on the first connecting plate; one end of the locking lever is rotationally connected to the telescopic member, the other end of the locking lever is connected to the first locking member, the locking lever has a rotation connection point at any position between the two ends, and the locking lever is rotationally connected to the first connecting plate at the rotation connection point; the power source is in communication with the telescopic member; the power source is in communication with the telescopic member, and when the telescopic member is retracted or extended, the locking lever is driven 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 comprises:

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

[0014] A controller configured to acquire a reverse signal of a vehicle and generate a control instruction according to the reverse signal, the control instruction being used to control the stop valve to open or stop.

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

[0016] A support, the telescopic member is mounted on the support, the support is mounted on the first connecting plate when the power assembly is mounted on the first connecting plate, and the support is mounted on the second connecting plate when the power assembly is mounted on the second connecting plate.

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

[0018] A second limiting member mounted on one of the first connecting plate and the second connecting plate;

[0019] A second locking member is rotatably mounted on the other one of the first connecting plate and the second connecting plate, and has at least a first state and a second state. In the first state, the second locking member is locked with the second limiting member to limit 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 the present application, the second locking module further comprises:

[0021] A positioning lock is mounted on the second locking member. When the second locking member is mounted on the first connecting plate, the positioning lock is locked to limit the rotation of the second locking member relative to the first connecting plate. When the second locking member is mounted on the second connecting plate, the positioning lock is locked to limit the rotation of the second locking member relative to the second connecting plate.

[0022] In some embodiments of the present application, when the second locking member is mounted on the first connecting plate, the first connecting plate has a first positioning hole and a second positioning hole. The positioning lock comprises a guide member and a positioning rod. The guide member is mounted on the first connecting plate and has a guide hole. The positioning rod is slidably connected in the guide hole. When the second locking member is in the first state, the guide hole is communicated with 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 communicated with 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.

[0023] When the second locking member is mounted on the second connecting plate, the second connecting plate has a first positioning hole and a second positioning hole. The positioning lock comprises 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 in the guide hole. When the second locking member is in the first state, the guide hole is communicated with 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 communicated with 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, a depth direction of the limiting groove is parallel to a 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 comprises:

[0026] a main body, 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, the rocker arm is installed on the main body; and

[0028] a locking portion, the locking portion is fixed on the main body, and the locking portion is at least partially located in the limiting groove.

[0029] In a second aspect, embodiments of the present application provide a vehicle, the vehicle comprising:

[0030] the locking device as described above;

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

[0032] a rear frame, the rear frame is connected to the other one of the first connecting plate and the second connecting plate.

[0033] Compared with the prior art, the present application has the following beneficial effects:

[0034] The locking device of the present application is composed of an automatic locking device and a manual locking device. The automatic locking device can be automatically completed without personnel operation during the reversing and the operation process after the reversing is completed. After the automatic locking device is locked in a severe working condition, only the locking rocker arm of the manual locking device needs to be rotated to achieve reliable locking function quickly and easily.

[0035] The present application adopts a type design combining a pneumatic automatic reversing locking device and a bolt type reversing locking device to design a connecting rod push-pull type full trailer reversing locking device. By optimizing the structures of the two kinds of locking devices, the advantages and disadvantages of the two kinds of locking devices are complementary, the use requirements in different working conditions during the reversing of the full trailer are met, the locking reliability is high, the operation is simple, the safety of the operator is high, the locking device has strong structural deformation resistance, and the like, and has high practical use value. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 Fig. 1 is a structural schematic view of a front frame, a rear frame and a locking device connected in some embodiments of the present application;

[0037] Figure 2 Fig. 1 is a schematic view of a first locking module according to some embodiments of the present application;

[0038] Figure 3 Fig. 2 is a schematic view of a first connecting plate, a second connecting plate and a second locking module connected according to some embodiments of the present application;

[0039] Figure 4 Fig. 3 is a schematic view of a gas source, a stop valve and a telescopic member connected according to some embodiments of the present application.

[0040] Legend of reference signs:

[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 part; 3522, rocker arm part; 3523, locking part; 353, positioning lock; 3531, guide member; 3532, positioning rod. DETAILED DESCRIPTION

[0042] In order to more clearly understand the above objectives, features and advantages of the present application, the present application will be 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 application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in 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 must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0045] In the description of the utility model, it also needs to be explained that, unless there is definite stipulation and limitation, the terms "arrange", "install", "connect", "connect" should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirect connection through intermediate medium, can be the communication of two elements inside. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0046] In order to solve the problems in the above background art, the utility model provides a locking device 30 and vehicle, the locking device 30 can effectively overcome the locking torque applied by the ground.

[0047] First, please refer to Figures 1 to 2 The embodiment of the application provides a locking device 30, the locking device 30 is applied to vehicle, and the vehicle includes front frame 10 and rear frame 20, the locking device 30 includes steering wheel 31, first connecting plate 32, second connecting plate 33 and first locking module 34, the first connecting plate 32 is connected with the steering wheel 31, and the first connecting plate 32 is used to connect the front frame 10;Second connecting plate 33 is connected with the steering wheel 31, and the second connecting plate 33 can be rotated relative to the first connecting plate 32 via the steering wheel 31, and the second connecting plate 33 is used to connect the rear frame 20;First locking module 34 includes power assembly 341, first locking part 342 and two first limit parts 343;Power assembly 341 and one of the two first limit parts 343 are fixed to the first connecting plate 32, and the other is fixed to the second connecting plate 33;Two first limit parts 343 are arranged along the circumference of the first connecting plate 32;First locking part 342 has at least first position and second position arranged along the radial direction of the first connecting plate 32, when first locking part 342 is in first position, first locking part 342 is located between two first limit parts 343 along the circumference of the first connecting plate 32, when first locking part 342 is in second position, first locking part 342 is misaligned with two first limit parts 343 along the radial direction of the first connecting plate 32, and power assembly 341 is movably connected with first locking part 342, which can drive first locking part 342 to move between first position and second position.

[0048] In some embodiments of the application, the first connecting plate 32 and the second connecting plate 33 are oppositely arranged, 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 connected with two ends of the steering wheel 31 respectively. The shape, size and material of the first connecting plate 32 and the second connecting plate 33 are not limited in the embodiment of the application.

[0049] The steering disc 31 can be configured as various bearings, one of the first connecting plate 32 and the second connecting plate 33 is connected with an outer ring of the bearing, and the other is connected with an 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 disc 31.

[0050] In some embodiments of the present application, 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 along the circumference of the first connecting plate 32 is located between the two first limiting members 343. 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 in both positive and negative directions relative to the second connecting plate 33), the first locking member 342 will abut 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 achieving 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 along the radius of the first connecting plate 32 is misaligned with the two first limiting members 343. 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 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 rotationally 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 ends. The locking lever 3411 is rotationally connected to the second connecting plate 33 at the rotation connection point. The power source 3412 can communicate with the telescopic member 3413. 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.

[0054] When the telescopic member 3413 is extended, the telescopic member 3413 can drive the locking lever 3411 to rotate around the rotating connection point in a first direction, thereby driving the locking block to move towards the first position. When the telescopic member 3413 is retracted, the telescopic member 3413 can drive the locking lever 3411 to rotate around the rotating connection point in a second direction, thereby driving the locking block to move towards the second position. The first direction and the second direction are opposite.

[0055] The telescopic member 3413 in the embodiments of the present application can be a cylinder, an electric telescopic rod, or an oil cylinder, or any device having a telescopic function. According to the telescopic member 3413, the power source 3412 also needs to be configured as a different device. 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. 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, the other end of the locking lever 3411 is connected to the first locking member 342, and the locking lever 3411 has a rotating connection point at any position between the two ends. The locking lever 3411 is rotatably connected to the first connecting plate 32 at the rotating connection point. The power source 3412 can communicate with the telescopic member 3413. When the telescopic member 3413 is extended or retracted, the telescopic member 3413 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.

[0057] Please refer to Figures 1 to 3 In some embodiments of the present application, the power assembly 341 further includes a stop valve 3414 and a controller. The stop valve 3414 is connected between the power source 3412 and the telescopic member 3413. The controller is configured to obtain a reverse signal of the vehicle and generate a control instruction according to the reverse signal. 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 reversing signal of the vehicle, and the control instruction is used to control the opening or closing of the stop valve 3414. When the telescopic member 3413 is extended, the locking lever 3411 is driven to rotate around the rotating connection point in a first direction, and then the locking block is driven to move towards the first position. When the piston rod is retracted, the locking lever 3411 is driven to rotate around the rotating connection point in a second direction, and then the locking block is driven to move towards the second position. The first direction and the second direction are opposite. The stop valve 3414 in the embodiment of the application is configured as an electrically controlled normally closed valve. After receiving the control signal, the normally closed valve 3414 is switched to an open state, 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 application, the power assembly 341 further comprises a support 3415, and the telescopic member 3413 is installed on the support 3415. When the power assembly 341 is installed on the first connecting plate 32, the support 3415 is installed on the first connecting plate 32. When the power assembly 341 is installed on the second connecting plate 33, the support 3415 is installed on the second connecting plate 33.

[0060] Please refer to Figure 1 and Figure 4 In some embodiments of the application, the locking device 30 further comprises a second locking module 35. The second locking module 35 comprises 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 one 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. When the second locking member 352 is in the first state, the second locking member 352 and the second limiting member 351 are locked to each other to limit the relative rotation of the first connecting plate 32 and the second connecting plate 33. When the second locking member 352 is in the second state, the first connecting plate 32 and the second connecting plate 33 can rotate relative to each other.

[0061] When the second locking member 352 is in the first state and the second limiting member 351 is locked to each other, the second locking member 352 is fixed on the other one of the first connecting plate 32 and the second connecting plate 33, and the second limiting member 351 is fixed on the other one of the first connecting plate 32 and the second connecting plate 33. Therefore, when the second locking member 352 and the second limiting member 351 are locked to each other in the first state, the relative rotation of the first connecting plate 32 and the second connecting plate 33 can be limited. When the second locking member 352 is in the second state, the second locking member 352 and the second limiting member 351 fail to lock 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 embodiments of the present application, the second locking member 352 is mounted 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 comprises a guide member 3531 and a positioning rod 3532, the guide member 3531 is mounted on the second connecting plate 33, the guide member 3531 has a guide hole, the positioning rod 3532 is slidingly connected in the guide hole, when the second locking member 352 is in the first state, the guide hole is communicated with the first positioning hole, 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 communicated with the second positioning hole, 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 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 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 in the limiting groove 3511 to realize 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 out of the limiting groove 3511 to make the second locking member 352 and the second limiting member 351 mutually disengage.

[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 part 3521, a rocker arm part 3522, and a locking part 3523. When the second locking member 352 is installed on the first connecting plate 32, the main body part 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 part 3521 is rotatably installed on the second connecting plate 33. The rocker arm part 3522 is installed on the main body part 3521. The locking part 3523 is fixed to the main body part 3521, and at least part of the locking part 3523 can be located in the limiting groove 3511.

[0071] A user can exert an external force on the rocker arm part 3522 to rotate the main body part 3521 relative to the first connecting plate 32 and the second connecting plate 33, and then make the locking part 3523 be located in the limiting groove 3511 or outside the limiting groove 3511. That is, the second locking member 352 in the embodiments of the present application is in a manual mode.

[0072] The present patent is applied to the use scene of reversing operation of an off-road full trailer. When reversing operation is needed during use of the vehicle, the electrical principle of the automatic locking device is as shown in Figure 1 When the towing vehicle reverses, the trailer electrical connector connected with the electrical system of the towing vehicle receives an electrical signal from the towing vehicle reversing lamp lighting, and gives a connecting electrical signal to the normally closed electromagnetic valve through the trailer cable connected with the trailer electrical connector. At this time, the air source is connected with the air cylinder through the air pipe, the air cylinder works, and the reversing locking block enters between the two reversing limiting blocks by pushing the locking lever and other mechanisms, so that the reversing automatic locking is realized. The reversing automatic locking function is suitable for reversing operation on hard road surface under good road conditions.

[0073] As shown in Figure 4 Figure 1 Figure 4 Figure 3 Figure 4 Pull the positioning lock outward, rotate the locking rocker arm counterclockwise by 90°, push the locking pin into the limiter, and clamp the positioning lock into the positioning hole of the locking rocker arm fixing support, so that the manual locking function is realized. The reversing automatic locking + manual locking function is suitable for reversing locking under harsh working conditions. After the automatic locking function is completed under harsh working conditions, the locking function can be quickly and easily achieved by rotating the locking rocker arm. At the same time, the locking device has a certain anti-structural deformation ability. Even if the automatic locking structure or its installation working surface, the vehicle frame support plate and other parts have a certain structural deformation, the locking pin can still smoothly enter the limiter for effective locking. It meets the use requirements of the full trailer under different working conditions during reversing, has the advantages of simple operation, high safety of the operator, good locking reliability, and has high practical value.

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

[0075] Based on the above vehicle, since having the above locking device 30, the vehicle in the embodiment of the application can automatically lock the front frame 10 and the rear frame 20 when reversing, so as to facilitate the vehicle to reverse.

[0076] The above embodiments are the relatively optimal examples for implementing the present application, and the present application is not limited to the above embodiments. Any non-essential addition or replacement made by a person skilled in the art according to the technical features of the technical scheme of the present application shall fall within the protection scope of the present application.

Claims

1. A locking device, characterized in that The locking device is applied to a vehicle including a front frame and a rear frame, and comprises: a steering wheel; a first connecting plate connected to the steering wheel and used for connecting the front frame; a second connecting plate connected to the steering wheel, capable of rotating relative to the first connecting plate via the steering wheel, and used for connecting the rear frame; and a first locking module including a power assembly, a first locking piece, and two first limit pieces; one of the power assembly and the two first limit pieces is fixed to the first connecting plate, and the other is fixed to the second connecting plate; the two first limit pieces are arranged along the circumference of the first connecting plate; the first locking piece has at least a first position and a second position arranged along the radial direction of the first connecting plate; when the first locking piece is in the first position, the first locking piece is located between the two first limit pieces along the circumference of the first connecting plate; when the first locking piece is in the second position, the first locking piece is misaligned with the two first limit pieces along the radial direction of the first connecting plate; the power assembly is movably connected to the first locking piece and can drive the first locking piece to move between the first position and the second position.

2. A locking device according to claim 1, characterised in that The two first limit pieces 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 piece is mounted on the second connecting plate; one end of the locking lever is rotatably connected to the telescopic piece, the other end is connected to the first locking piece, 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 piece; when the telescopic piece is extended or retracted, the locking lever can be driven to rotate around the rotation connection point, thereby driving the first locking piece to move between the first position and the second position; or The two first limit pieces 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 piece is mounted on the first connecting plate; one end of the locking lever is rotatably connected to the telescopic piece, the other end is connected to the first locking piece, 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 piece; the power source can be connected to the telescopic piece; when the telescopic piece is extended or retracted, the locking lever can be driven to rotate around the rotation connection point, thereby driving the first locking piece to move between the first position and the second position.

3. A locking device according to claim 2, wherein The power assembly further includes: a stop valve connected between the power source and the telescopic piece; a controller used for acquiring a reverse signal of the vehicle and generating a control instruction according to the reverse signal, the control instruction being used for controlling the stop valve to open or stop.

4. A locking device according to claim 2, wherein The power assembly further includes: A support, the telescopic member is mounted on the support, the support is mounted on the first connecting plate when the power assembly is mounted on the first connecting plate, the support is mounted on the second connecting plate when the power assembly is mounted on the second connecting plate.

5. A locking device according to any one of claims 1-4, characterized in that The locking device further comprises a second locking module, the second locking module comprises: A second limiting member, the second limiting member is mounted 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 one 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 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, the first connecting plate and the second connecting plate can be relatively rotated when the second locking member is in the second state.

6. A locking device according to claim 5, wherein The second locking module further comprises: A positioning lock, the positioning lock is mounted on the second locking member, the positioning lock can limit the rotation of the second locking member relative to the first connecting plate when the second locking member is mounted on the first connecting plate; the positioning lock can limit the rotation of the second locking member relative to the second connecting plate when the second locking member is mounted on the second connecting plate.

7. A locking device according to claim 6, wherein When the second locking member is mounted on the first connecting plate, the first connecting plate has a first positioning hole and a second positioning hole, the positioning lock comprises a guide member and a positioning rod, the guide member is mounted on the first connecting plate, the guide member has a guide hole; the positioning rod is slidably connected in the guide hole; wherein, the guide hole communicates with the first positioning hole when the second locking member is in the first state, 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; the guide hole communicates with the second positioning hole when the second locking member is in the second state, 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, When the second locking member is mounted on the second connecting plate, the second connecting plate has a first positioning hole and a second positioning hole, the positioning lock comprises a guide member and a positioning rod, the guide member is mounted on the second connecting plate, the guide member has a guide hole; the positioning rod is slidably connected in the guide hole; wherein, the guide hole communicates with the first positioning hole when the second locking member is in the first state, 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; the guide hole communicates with the second positioning hole when the second locking member is in the second state, 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. The locking device of claim 5, wherein: 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 in the limiting groove.

9. A locking device according to claim 8, wherein The second locking member comprises: a main body portion, which is rotatably installed on the first connecting plate when the second locking member is installed on the first connecting plate, and which is rotatably installed on the second connecting plate when the second locking member is installed on the second connecting plate; a rocker arm portion, which is installed on the main body portion; and a locking portion, which is fixed to the main body portion and which is at least partially located in the limiting groove.

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

Images