Locking structure of tractor

Abstract

The utility model relates to the technical field of transportation in an airport, and discloses a tractor locking structure which comprises a lock head installed on the head portion of a rear vehicle, and the end portion of the lock head is provided with a clamping portion protruding in the radial direction. The locking block is installed at the tail of the front vehicle, a cavity is formed in the locking block, a magnetic ring is arranged on the inner wall of the cavity, one end face of the locking block is opened to form a locking opening, a locking sleeve surrounding the locking opening and extending towards the interior of the cavity is arranged at the locking opening, and the radial size of the locking sleeve is gradually reduced from the locking opening to the interior of the cavity. The side wall of the lock sleeve is divided into a plurality of discontinuous lock pieces in the circumferential direction, and springs are arranged between the lock pieces and the inner wall of the cavity. And the electric control system is electrically connected with the magnetic ring in the locking block and can control the magnetic ring to be magnetized or demagnetized. Through combination of the lock head and the lock sleeve, stable connection of a front bicycle and a rear bicycle can be achieved, when unlocking is needed, the control system controls the magnetic ring in the lock block to be magnetized, the magnetic ring magnetically attracts all the lock pieces of the lock sleeve, the lock pieces are made to be opened outwards, at the moment, the lock head can be separated from the lock sleeve, and unlocking is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of airport transportation, and more specifically to a tractor locking structure. Background Art

[0002] The safety and efficiency of material transportation within an airport are of vital importance. Materials are usually transported by connecting a tractor to a trailer. The connection lock between the tractor and the trailer must be firm and reliable to prevent accidental uncoupling during transportation, while also ensuring that it can be quickly unlocked in an emergency.

[0003] The traditional locking structure between the tractor and trailer has problems such as complicated operation, loose locking or slow unlocking, all of which may affect transportation safety and efficiency: some traditional locks become loose due to wear, vibration or other external factors, resulting in accidental separation of the tractor and trailer during transportation, and insufficient locking reliability; some existing locks are easily opened illegally, posing a safety hazard; traditional locks are usually simple mechanical structures that cannot be integrated with modern intelligent management systems, making it difficult to achieve remote monitoring and control, and lack intelligent management. Utility Model Content

[0004] The utility model aims to provide a tractor locking structure to solve the technical problems existing in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model is implemented by adopting the following technical solutions:

[0006] A tractor locking structure is used for connecting and locking a front vehicle and a rear vehicle, and the locking structure comprises:

[0007] A lock head 100, which is mounted on the front part of the rear vehicle, and an end of the lock head 100 is provided with a radially protruding clamping portion 110;

[0008] A lock block 200, which is installed at the rear of the vehicle in front, and has a cavity 210 disposed inside the lock block 200. A magnetic ring 250 capable of controlling magnetic flux or magnetic interruption is disposed circumferentially on the inner wall of the cavity 210; an end surface of the lock block 200 is opened to form a lock opening 220, and a lock sleeve 230 is disposed at the lock opening 220, which surrounds the lock opening 220 and extends into the cavity 210. The radial dimension of the lock sleeve 230 gradually decreases from the lock opening 220 to the cavity 210. The side wall of the lock sleeve 230 is divided into a plurality of intermittent lock sheets 231 along the circumferential direction, and a spring 240 is disposed between the lock sheet 231 and the inner wall of the cavity 210;

[0009] The electric control system is electrically connected to the magnetic ring 250 inside the locking block 200 and can control the magnetic ring 250 to be magnetically connected or demagnetized.

[0010] Furthermore, the end of the clamping portion 110 of the lock 100 is configured to be a smooth arc.

[0011] Furthermore, a radially protruding limiting portion 120 is further provided on the lock head 100 , and the distance between the limiting portion 120 and the clamping portion 110 is the same as the axial length of the lock sleeve 230 .

[0012] Furthermore, a sensor 260 is further disposed in the cavity 210 of the lock block 200 , and the sensor 260 can detect a position signal of the lock head 100 and transmit the position signal to the electric control system.

[0013] Furthermore, an unlocking control logic is preset in the electric control system, and the unlocking control logic requires at least two steps of confirmation operations to control the magnetic ring 250 to be magnetized or demagnetized.

[0014] Furthermore, the locking structure also includes a remote control system, which is connected to the electric control system signal and can send signals to the electric control system to control the magnetic ring 250 to be magnetized or demagnetized through the electric control system.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model provides a tractor locking structure, which can realize the stable connection between the front vehicle and the rear vehicle through the combination of the lock head and the lock sleeve. When unlocking is required, the control system controls the magnetism of the magnetic ring in the lock block, and the magnetic force of the magnetic ring attracts the locking plates of the lock sleeve so that the locking plates are opened outwards. At this time, the lock head can be separated from the lock sleeve to realize unlocking.

[0017] The utility model provides a tractor locking structure. In order to prevent accidental unlocking caused by misoperation, a control logic is set in the electric control system. At least two steps of confirmation operation are required to control the magnetic ring to be magnetized or demagnetized, and then control the lock sleeve to be unlocked.

[0018] The utility model provides a tractor locking structure, which realizes remote monitoring and control of the locking structure by setting a remote control system connected with the electric control system signal of the locking block, and integrating the remote control system with the modern intelligent management system inside the airport. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] Figure 1 It is a structural schematic diagram of a locking structure of a tractor in one embodiment;

[0021] Figure 2 is a front view of a lock head in one embodiment;

[0022] Figure 3 A side view of a locking block in one embodiment;

[0023] Figure 4 for Figure 3 Sectional view at AA;

[0024] Figure 5 A front view of a locking head and a locking block in a locked state in one embodiment;

[0025] Figure 6 for Figure 5 Sectional view at the middle BB;

[0026] 100. Locking head, 110. Clamping part, 120. Limiting part;

[0027] 200. Lock block, 210. Cavity, 220. Lock mouth, 230. Lock sleeve, 231. Lock plate, 240. Spring, 250. Magnetic ring, 260. Sensor. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the utility model is described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figures 1 to 6 The present embodiment provides a tractor locking structure for locking the connection between the front vehicle and the rear vehicle inside the airport. The locking structure includes: a lock head 100, a lock block 200, an electric control system and a remote control system.

[0030] The lock head 100 is installed on the front part of the rear vehicle. The lock head 100 is constructed as a rod, the root of which is firmly connected to the rear vehicle, and the end of which is provided with a radially protruding clamping portion 110.

[0031] The lock block 200 is installed at the rear of the front vehicle. The lock block 200 is constructed as a square block, and a cavity 210 is arranged inside the lock block. A magnetic ring 250 that can control magnetic flux or magnetic flux interruption is arranged on the inner wall of the cavity 210 along the circumferential direction; one end face of the lock block 200 is opened and connected to the cavity 210 to form a lock opening 220, and a lock sleeve 230 is arranged at the lock opening 220, which surrounds the lock opening 220 and extends into the cavity 210. The radial size of the lock sleeve 230 gradually decreases from the lock opening 220 to the inside of the cavity 210 to form a tapered structure. The side wall of the locking sleeve 230 is divided into a plurality of discontinuous locking sheets 231 along the circumferential direction. The locking sheets 231 can be attracted by the magnetic force of the magnetic ring 250. A spring 240 is arranged between the locking sheet 231 and the inner wall of the cavity 210. When the magnetic ring 250 is controlled to be magnetized, the magnetic attraction force of the magnetic ring 250 on the locking sheet 231 overcomes the elastic force of the spring 240, and attracts the locking sheet 231 to open toward the inner wall of the cavity 210; when the magnetic ring 250 is controlled to be demagnetized, the spring 240 opens and pushes the locking sheet 231 to reset.

[0032] The lock head 100 can be inserted into the lock sleeve 230 through the lock opening 220. When the clamping portion 110 at the end of the lock head 100 reaches the bottom of the lock sleeve 230, it squeezes the lock piece 231 outward, and the lock piece 231 is elastically deformed outward. The bottom of the lock sleeve 230 expands, so that the clamping portion 110 passes through the bottom of the lock sleeve 230. The squeezing force of the clamping portion 110 on the lock piece 231 disappears, and the lock piece 231 is reset under the action of its own elastic force and the elastic force of the spring 240. The end of the lock piece 231 is clamped on the clamping portion 110, so that the lock head 100 cannot be pulled out.

[0033] In this embodiment, in order to facilitate the insertion of the lock head 100, the end of the clamping portion 110 of the lock head 100 is set to a smooth arc shape to form a guide portion; at the same time, in order to avoid axial shaking of the lock head 100 in the locked state, a radially protruding limiting portion 120 is also provided on the lock head 100, and the distance between the limiting portion 120 and the clamping portion 110 is the same as the axial length of the lock sleeve 230. When the locking plate 231 is clamped on the clamping portion 110, the limiting portion 120 reaches the position of the lock mouth 220. At the same time, the radial dimension of the limiting portion 120 is greater than the radial dimension of the lock mouth 220. Therefore, the lock head 100 can be axially limited to avoid shaking.

[0034] The electronic control system is electrically connected to the magnetic ring 250 inside the locking block 200, and can control the magnetic ring 250 to be magnetized or demagnetized; the electronic control system includes an unlocking button, and the switch button can be set in the cab of the front vehicle. By touching the unlocking button, the electronic control system is triggered to control the magnetic ring 250 to be magnetized or demagnetized, thereby controlling the locking structure to be unlocked or locked.

[0035] A sensor 260 is further disposed in the cavity 210 of the lock block 200 . The sensor 260 can detect a position signal of the lock head 100 and transmit the position signal to the electric control system so that the electric control system can confirm the locking state of the locking structure.

[0036] In this embodiment, in order to prevent accidental unlocking caused by misoperation, an unlocking control logic is preset in the electronic control system. The unlocking control logic requires two-step confirmation operation to control the magnetic ring 250 to be magnetized or demagnetized to ensure safe unlocking. For example, the first step of confirmation can be pressing the unlock button, which will start the unlocking process of the electronic control system; the second step of confirmation may involve other confirmation operations, such as completing a specific action within a certain period of time or pressing an additional unlock button; after completing these two steps of confirmation, the electronic control system will send a signal to control the magnetic ring 250 to be magnetized, so that the locking mechanism releases the locked state and allows the lock head 100 to detach from the connection point.

[0037] The remote control system is connected to the electric control system signal and can send signals to the electric control system to control the magnetic ring 250 to be magnetized or demagnetized through the electric control system; the remote control system can be integrated with the modern intelligent management system inside the airport to realize remote monitoring and control of the locking structure.

[0038] The working principle of a tractor locking structure provided in this embodiment is as follows:

[0039] When the front vehicle and the rear vehicle need to be connected, the lock head 100 on the rear vehicle is aligned with the lock opening 220 of the lock block 200 on the front vehicle, and then the front vehicle or the rear vehicle is moved so that the lock head 100 is inserted into the lock sleeve 230 from the lock opening 220, and the lock head 100 is locked through the lock sleeve 230 to achieve a stable connection between the front vehicle and the rear vehicle; at this time, the sensor 260 detects the position signal of the lock head 100 and transmits the signal to the electronic control system. After receiving the signal, the electronic control system confirms that the locking structure is in a locked state and can send a signal to the electronic control system or other control system of the tractor before proceeding to the next step to ensure the safety of the connection. In the connected state, even if a power outage occurs, the spring 240 can provide support for the lock plate 231 to keep the lock head 100 in the locked position to ensure a safe and stable connection.

[0040] When the front vehicle and the rear vehicle need to be separated, the operator performs a two-step confirmation operation according to the unlocking logic in the electronic control system. The electronic control system controls the magnetic ring 250 to be magnetized, and the magnetic ring 250 attracts the lock plate 231 to open outward, and the bottom of the lock sleeve 230 expands. At this time, the front vehicle or the rear vehicle moves, so that the lock head 100 and the lock block 200 can be separated, and the front vehicle and the rear vehicle are unlocked and separated.

[0041] In another embodiment, an electric motor, a transmission device and a locking mechanism may be further provided inside the locking block 200 , and the electric control system controls the electric motor to drive the locking mechanism to operate through the transmission device, thereby achieving locking and releasing of the lock head 100 .

[0042] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tractor locking structure, used for connecting and locking a front vehicle and a rear vehicle, characterized in that: The locking structure comprises: A lock head (100), the lock head (100) being mounted on the front part of the rear vehicle, and the end of the lock head (100) being provided with a radially protruding clamping portion (110); A lock block (200), the lock block (200) being mounted at the rear of the vehicle in front, the lock block (200) being provided with a cavity (210) inside, the inner wall of the cavity (210) being provided with a magnetic ring (250) capable of controlling magnetic flux or magnetic interruption along the circumferential direction; an end surface of the lock block (200) is opened to form a lock opening (220), the lock opening (220) being provided with a lock sleeve (230) surrounding the lock opening (220) and extending into the cavity (210), the radial dimension of the lock sleeve (230) gradually decreasing from the lock opening (220) to the cavity (210), the side wall of the lock sleeve (230) being divided into a plurality of discontinuous lock sheets (231) along the circumferential direction, and a spring (240) being provided between the lock sheet (231) and the inner wall of the cavity (210); An electric control system is electrically connected to the magnetic ring (250) inside the locking block (200) and can control the magnetic ring (250) to be magnetically connected or magnetically disconnected.

2. A tractor locking structure according to claim 1, characterized in that: The end of the clamping portion (110) of the lock head (100) is configured to be a smooth arc shape.

3. A tractor locking structure according to claim 1, characterized in that: The lock head (100) is also provided with a radially protruding limiting portion (120), and the distance between the limiting portion (120) and the clamping portion (110) is the same as the axial length of the lock sleeve (230).

4. A tractor locking structure according to claim 1, characterized in that: A sensor (260) is also provided in the cavity (210) of the lock block (200), and the sensor (260) can detect a position signal of the lock head (100) and transmit the position signal to the electric control system.

5. A tractor locking structure according to claim 1, characterized in that: An unlocking control logic is preset in the electric control system, and the unlocking control logic requires at least two steps of confirmation operations before the magnetic ring (250) can be controlled to be magnetized or demagnetized.

6. A tractor locking structure according to claim 1, characterized in that: It also includes a remote control system, which is connected to the electric control system signal and can send a signal to the electric control system to control the magnetic ring (250) to be magnetized or demagnetized through the electric control system.

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