A lifting twist lock device for a container trailer

Abstract

The utility model discloses a kind of lifting type turn lock devices for container trailer, including mounting bracket, locating seat, lock head, transmission mechanism and servo motor, the top of mounting bracket is provided with circular perforation, its inboard has the accommodating cavity opposite to circular perforation. Locating seat is movably arranged in the inboard of accommodating cavity, and locating seat upper end can be extended to the outside of mounting bracket by circular perforation. Locating seat can be lifted, rotated relative to mounting bracket, and be clamped on mounting bracket by extension. Lock head is arranged above locating seat by vertical shaft, and the lower end of vertical shaft penetrates the bottom surface of locating seat. Servo motor is arranged in the lower part of mounting bracket by self-locking folding hinge, when servo motor is below accommodating cavity, its output end is connected with the lower end of vertical shaft by transmission mechanism, and drives vertical shaft and lock head to rotate. The utility model can control lock head rotation by adjusting the position of servo motor, complete locking and unlocking, and the degree of automation is high, without manual operation off the car, improve the convenience and safety of operation.

Description

Technical Field

[0001] This utility model relates to the field of container trailer lock technology, specifically to a lifting rotary lock device for container trailers. Background Technology

[0002] The fixed connection between the container and the trailer is usually achieved by using an oblong button lock installed on the trailer frame. The lock head is inserted into the oblong lock hole at the bottom corner of the container, and the handle installed on the button lock rotates the lock head 90° to lock the container onto the semi-trailer frame.

[0003] Most container trailers require manual operation of multiple latches via levers, which is time-consuming, labor-intensive, and inefficient. During vehicle movement, the latches may open spontaneously due to vibrations and bumps, potentially causing the container to fall and resulting in an accident. Furthermore, port safety regulations prohibit drivers from leaving the cab while the vehicle is in the port yard; drivers must manually operate the latches to lock the containers before or after entering or leaving the yard. This is especially problematic when turning within the port yard, where empty containers may also fall. Automatic locking and unlocking of the latches from inside the cab would significantly reduce safety hazards and improve transportation efficiency. Therefore, existing technology requires further improvement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to propose a lifting-type rotary lock device for container trailers, which solves the problems of existing rotary locks requiring manual operation, which is time-consuming, labor-intensive, inefficient, and has poor security.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A lifting-type rotary lock device for container trailers includes a mounting frame, a positioning seat, a lock head, a transmission mechanism, and a motor. The top of the mounting frame has a circular through hole, and the inner side of the mounting frame has a vertically penetrating receiving cavity. The through hole is located directly above the receiving cavity.

[0007] The upper part of the positioning seat has extensions on both sides that protrude outward relative to its lower sidewall. The positioning seat is movably disposed inside the receiving cavity, and the upper end of the positioning seat can extend to the outside of the mounting bracket through a circular perforation.

[0008] The lower part of the receiving cavity is provided with a limiting component to prevent the positioning seat from detaching from the bottom of the receiving cavity. After the positioning seat can be raised and rotated relative to the mounting frame, it is locked in place by the extensions on both sides of the mounting frame at the top of the receiving cavity.

[0009] The lock head is located above the positioning seat, and the bottom of the lock head is rotatably engaged with the positioning seat via a vertical shaft, the lower end of which protrudes from the bottom surface of the positioning seat.

[0010] The motor is mounted on the lower part of the mounting frame via a self-locking folding hinge, and can rotate within the range of 0° to 180° relative to the mounting frame. The self-locking folding hinge positions the motor at the 0° position and the 180° position.

[0011] When the motor is below the housing cavity, the output end of the motor can be connected to the lower end of the vertical shaft through the transmission mechanism, and drive the vertical shaft and the lock head to rotate relative to the positioning seat within the range of 0° to 90°, thereby locking or unlocking the container located above the rotary lock device.

[0012] Furthermore, the mounting bracket includes a top plate, a rear side plate, and two upright plates. The top plate is arranged horizontally with a circular perforation. The rear side plate is arranged vertically below the top plate, and its upper end is fixedly connected to the top plate at the rear edge of the circular perforation.

[0013] Two vertical plates are arranged in parallel on the left and right sides below the circular perforation. The upper end of each plate is fixedly connected to the top plate, and its rear end is fixedly connected to the rear side plate. The receiving cavity is formed between the rear side plate and the two vertical plates.

[0014] Furthermore, the limiting assembly includes a limiting post and a limiting rod. The limiting post is arranged laterally on the lower rear side of the receiving cavity, and its two ends are fixedly connected to two upright plates to form a whole.

[0015] The limiting rod is located at the lower front of the receiving cavity and is at the same height as the limiting post. The left and right ends of the limiting rod are detachably connected to the two upright plates respectively.

[0016] Furthermore, the positioning seat is an integral structure consisting of an upper cuboid and a lower cylinder, and the inner side of the positioning seat has mounting holes that are adapted to the vertical axis.

[0017] The lock head is a four-sided pyramid with a rectangular base, and the top of the positioning seat is a rectangular structure that matches the shape of the bottom of the lock head.

[0018] The vertical shaft is a straight circular shaft that passes vertically through the mounting hole of the positioning seat. The upper end of the vertical shaft is fixedly connected to the bottom center of the lock head to form a whole.

[0019] Furthermore, the transmission mechanism includes a crank, an L-shaped connector, and a positioning pin. The crank is arranged laterally below the vertical plate, and one end of it is fixedly connected to the lower end of the vertical shaft.

[0020] The motor is a servo motor. One end of the L-shaped connector is fixedly connected to the output end of the servo motor. The other end of the connector has a positioning groove adapted to the crank. One end of the L-shaped connector is fixedly provided with two ears. The two ears are symmetrically arranged on both sides of the positioning groove. The positioning pin passes through the two ears to restrict the crank in the positioning groove.

[0021] Furthermore, it also includes a normally open switch, the self-locking folding hinge is located on one of the upright plates, one hinge plate of the self-locking folding hinge is fixedly connected to the lower outer wall of the upright plate, and the servo motor is mounted on the other hinge plate of the self-locking folding hinge.

[0022] The normally open switch is fixedly installed on the outer wall of the upright plate, and the contacts of the normally open switch can make contact with the outer wall of the servo motor.

[0023] By adopting the above technical solution, the beneficial technical effects of this utility model are as follows: The servo motor of this utility model is mounted on the mounting frame through a self-locking folding hinge. In the non-working state, the positioning seat and the lock head are retracted into the receiving cavity. Before working, the position of the servo motor can be adjusted to control the rotation of the lock head. Locking and unlocking can be controlled from the cab. It has a high degree of automation, avoids the driver getting out of the vehicle to operate manually, improves the convenience of operation, and is suitable for special work sites with safety requirements. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a lifting rotary lock device for container trailers according to this utility model.

[0025] Figure 2 This is a structural schematic diagram of the mounting bracket of this utility model.

[0026] Figure 3 This is an unlocking state diagram of a lifting rotary lock device for container trailers according to this utility model.

[0027] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0028] Figure 5 This is a diagram showing the locking state of a lifting rotary lock device for container trailers according to this utility model. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings:

[0030] Combination Figures 1 to 5A lifting-type rotary lock device for container trailers includes a mounting frame 1, a positioning seat 2, a lock head 3, a transmission mechanism, and a servo motor 4. The mounting frame 1 has a circular through-hole 14 at its top, and a through-cavity 15 on its inner side. The circular through-hole 14 is located directly above the through-cavity 15 and communicates with it. The mounting frame 1 is fixedly welded to the end of the intermediate crossbeam of the container trailer, and the upper surface of the mounting frame 1 is on the same horizontal plane as the upper surface of the intermediate crossbeam.

[0031] Specifically, the mounting bracket 1 includes a top plate 11, a rear side plate 12, and two upright plates 13. The top plate 11, rear side plate 12, and two upright plates 13 are all made of square steel plates of a certain thickness. A circular perforation 14 is formed on the top plate 11, with the center of the circular perforation 14 located to the left of the centerline of the top plate 11. The top plate 11 is arranged horizontally, and the rear side plate 12 is arranged vertically below the top plate 11. The upper end of the rear side plate 12 is fixedly welded to the bottom of the top plate 11, and the front sidewall of the rear side plate 12 is located at the rear edge of the circular perforation 14.

[0032] Both upright plates 13 are located in front of the rear side plate 12. The two upright plates 13 are vertically parallel and spaced apart on the left and right sides below the circular perforation 14. The upper middle part of each upright plate 13 is located inside the outline of the circular perforation 14. The front and rear sides of its upper end are fixedly welded to the top plate 11. The rear end of the upright plate 13 is fixedly welded to the rear side plate 12. The top plate 11, the rear side plate 12 and the two upright plates 13 are welded to form an integral structure. It should be noted that the receiving cavity 15 is formed between the rear side plate 12 and the two upright plates 13.

[0033] The lower part of the receiving cavity 15 is provided with a limiting component to prevent the positioning seat 2 from detaching from the bottom of the receiving cavity 15. Specifically, the limiting component includes a limiting post 51 and a limiting rod 52. The limiting post 51 is arranged laterally on the lower rear side of the receiving cavity 15, and its two ends are fixedly connected to two upright plates 13 to form a whole. The limiting rod 52 is located on the lower front side of the receiving cavity 15 and is at the same height as the limiting post 51. The left and right ends of the limiting rod 52 are detachably connected to the two upright plates 13. By disassembling and installing the limiting rod 52, the positioning seat 2 can be placed inside the receiving cavity 15.

[0034] The upper part of the positioning seat 2 has two opposite sides with extensions that protrude outward relative to its lower sidewall. The positioning seat 2 is movably disposed inside the receiving cavity 15, and the upper end of the positioning seat 2 can extend to the outside of the mounting bracket 1 through the circular through hole 14. In the working state, after the positioning seat 2 rises to a certain height, it is rotated 90° so that the bottom ends of the extensions on both sides of the positioning seat 2 are locked at the upper ends of the two upright plates 13. In the non-working state, after the positioning seat 2 is rotated 90°, it falls to a certain height, and the bottom ends of the extensions on both sides of the positioning seat 2 are locked on the limiting post 51 and the limiting rod 52, preventing the positioning seat 2 from moving further downward, so that the entire positioning seat 2 is inside the receiving cavity 15. At the same time, the top of the lock head 3 is not higher than the upper surface of the top plate 11.

[0035] Specifically, the positioning base 2 is an integral structure composed of an upper cuboid and a lower cylinder. The inner side of the positioning base 2 has a mounting hole that matches the vertical shaft 31. The lock head 3 is located above the positioning base 2, and the bottom of the lock head 3 is rotatably connected to the positioning base 2 via the vertical shaft 31. More specifically, the lock head 3 is a four-sided pyramid with a rectangular bottom. The top of the positioning base 2 is a rectangular structure that matches the shape of the bottom of the lock head 3. The vertical shaft 31 is a straight circular shaft that passes vertically through the mounting hole of the positioning base 2. The upper end of the vertical shaft 31 is fixedly connected to the center of the bottom of the lock head 3, and the lower end of the vertical shaft 31 protrudes from the bottom surface of the positioning base 2 and is rotatably engaged with the positioning base 2.

[0036] The servo motor 4 is mounted on the lower part of the mounting frame 1 via a self-locking folding hinge 41. The servo motor 4 can rotate within the range of 0° to 180° relative to the mounting frame 1. The self-locking folding hinge 41 positions and locks the servo motor 4 at the 0° and 180° positions, thus fixing the servo motor 4 to the mounting frame 1. The servo motor 4 is powered by the tractor's battery. The signal terminal of the servo motor 4 is connected to the tractor's control system, and the operating status of the servo motor 4 is controlled by commands via operating buttons installed in the tractor's cab.

[0037] The lifting rotary lock device for container trailers also includes a normally open switch 7. The self-locking folding hinge 41 is located on one of the upright plates 13. One hinge plate of the self-locking folding hinge 41 is fixedly connected to the lower outer wall of the upright plate 13. The servo motor 4 is mounted on the other hinge plate of the self-locking folding hinge 41.

[0038] The normally open switch 7 is fixedly installed on the outer wall of the upright plate 13, and the contacts of the normally open switch 7 can contact and cooperate with the outer wall of the servo motor 4. In the non-working state, the servo motor 4 is located on the outside of the upright plate 13, and the self-locking folding hinge 41 locks and fixes the servo motor 4 at the 0° position. At this time, the outer wall of the servo motor 4 is in contact and cooperates with the contacts of the normally open switch 7, and the servo motor 4 is not powered. In the working state, the servo motor 4 is manually rotated to the 180° position and locked and fixed. The servo motor 4 is located below the receiving cavity 15, and the output shaft of the servo motor 4 is connected to the lower end of the vertical shaft 31 through the transmission mechanism.

[0039] When the servo motor 4 is located below the receiving cavity 15, the output end of the servo motor 4 can be connected to the lower end of the vertical shaft 31 through the transmission mechanism, and drive the vertical shaft 31 and the lock head 3 to rotate relative to the positioning seat 2 within the range of 0° to 90°, thereby locking or unlocking the container located above the rotary lock device.

[0040] The transmission mechanism includes a crank 61, an L-shaped connector 62, and a positioning pin 63. The crank 61 is arranged laterally below the vertical plate 13, with one end fixedly connected to the lower end of the vertical shaft 31. One end of the L-shaped connector 62 is fixedly connected to the output end of the servo motor 4, and the other end has a positioning groove adapted to the crank 61. Two ears 64 are fixedly provided on one end of the L-shaped connector 62, and the two ears 64 are symmetrically arranged on both sides of the positioning groove. The positioning pin 63 passes through the two ears 64, restricting the crank 61 within the positioning groove.

[0041] Before entering the working state, first rotate the crank 61 to the predetermined position. Then, adjust the servo motor 4 located outside the vertical plate 13 to the position below the receiving cavity 15. During the rotation of the servo motor 4, the L-shaped connector 62 rotates together with the servo motor 4. The end of the crank 61 enters the inner side of the positioning groove. Then, the positioning pin 63 passes through the holes of the two ears 64 and is fixed so that the crank 61 will not be disengaged from the L-shaped connector 62. The servo motor 4 drives the vertical shaft 31 to rotate relative to the positioning seat 2 through the L-shaped connector 62 and the crank 61.

[0042] The parts not mentioned in this utility model can be achieved by adopting or referencing existing technologies.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A lifting-type rotary lock device for container trailers, characterized in that, It includes a mounting bracket, a positioning seat, a lock head, a transmission mechanism, and a motor. The top of the mounting bracket has a circular through hole, and the inner side of the mounting bracket has a vertically penetrating receiving cavity. The through hole is located directly above the receiving cavity. The upper part of the positioning seat has extensions on both sides that protrude outward relative to its lower sidewall. The positioning seat is movably disposed inside the receiving cavity, and the upper end of the positioning seat can extend to the outside of the mounting bracket through a circular through hole. The lower part of the receiving cavity is provided with a limiting component to prevent the positioning seat from detaching from the bottom of the receiving cavity. The positioning seat can be raised, lowered and rotated relative to the mounting bracket, and is locked in the position of the mounting bracket at the top of the receiving cavity through the extension. The lock head is located above the positioning seat, and the bottom of the lock head is rotatably engaged with the positioning seat via a vertical shaft. The lower end of the vertical shaft extends through the bottom surface of the positioning seat. The motor is mounted on the lower part of the mounting frame via a self-locking folding hinge, allowing it to rotate within the range of 0° to 180° relative to the mounting frame. The self-locking folding hinge positions the motor at the 0° and 180° positions. When the motor is below the housing cavity, the output end of the motor can be connected to the lower end of the vertical shaft through the transmission mechanism, and drive the vertical shaft and the lock head to rotate relative to the positioning seat within the range of 0° to 90°, thereby locking or unlocking the container located above the rotary lock device.

2. The lifting-type rotary lock device for container trailers according to claim 1, characterized in that, The mounting frame includes a top plate, a rear side plate, and two upright plates. The top plate is arranged horizontally with a circular perforation. The rear side plate is arranged vertically below the top plate, and its upper end is fixedly connected to the top plate at the rear edge of the circular perforation. Two vertical plates are arranged in parallel on the left and right sides below the circular perforation. The upper end of each plate is fixedly connected to the top plate, and its rear end is fixedly connected to the rear side plate. The receiving cavity is formed between the rear side plate and the two vertical plates.

3. A lifting-type rotary lock device for a container trailer according to claim 2, characterized in that, The limiting assembly includes a limiting post and a limiting rod. The limiting post is arranged laterally on the lower rear side of the receiving cavity, and its two ends are fixedly connected to two upright plates to form a whole. The limiting rod is located at the lower front of the receiving cavity and is at the same height as the limiting post. The left and right ends of the limiting rod are detachably connected to the two upright plates respectively.

4. A lifting-type rotary lock device for a container trailer according to claim 1, characterized in that, The positioning seat is an integral structure consisting of an upper cuboid and a lower cylinder, and the inner side of the positioning seat has mounting holes that are adapted to the vertical axis. The lock head is a four-sided pyramid with a rectangular base, and the top of the positioning seat is a rectangular structure that matches the shape of the bottom of the lock head. The vertical shaft is a straight circular shaft that passes vertically through the mounting hole of the positioning seat. The upper end of the vertical shaft is fixedly connected to the bottom center of the lock head to form a whole.

5. A lifting-type rotary lock device for a container trailer according to claim 1, characterized in that, The transmission mechanism includes a crank, an L-shaped connector and a positioning pin. The crank is arranged laterally below the vertical plate, and one end of it is fixedly connected to the lower end of the vertical shaft. The motor is a servo motor. One end of the L-shaped connector is fixedly connected to the output end of the servo motor. The other end of the connector has a positioning groove adapted to the crank. One end of the L-shaped connector is fixedly provided with two ears. The two ears are symmetrically arranged on both sides of the positioning groove. The positioning pin passes through the two ears to restrict the crank in the positioning groove.

6. A lifting-type rotary lock device for a container trailer according to claim 2, characterized in that, It also includes a normally open switch, the self-locking folding hinge is located on one of the upright plates, one hinge plate of the self-locking folding hinge is fixedly connected to the lower outer wall of the upright plate, and the servo motor is mounted on the other hinge plate of the self-locking folding hinge. The normally open switch is fixedly installed on the outer wall of the upright plate, and the contacts of the normally open switch can make contact with the outer wall of the servo motor.

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