Turnover lock of semitrailer

Abstract

The utility model relates to the technical field of semitrailers, and discloses a turnover lock of a semitrailer, which comprises a lockset, two vertical side plates arranged at an interval and a top plate connected with the two side plates, a notch for the lockset to extend out is arranged on the top plate, and a storage cavity for the lockset to turn over is formed between the two side plates. The lock comprises a core rod, a lock head, a handle, a lock seat, a sleeve and a lug plate, the lug plate is rotationally connected with the fixed shaft, and the lug plate is fixed through a locking structure, so that the lock is kept in a vertical state. According to the turnover lock, a driver only needs to control the handle, the lock can be driven to turn over to achieve adjustment of the height of the lock, the lock head and the lock seat can stretch out of the bearing face of the semitrailer or be hidden in the containing cavity, operation is easy, the application range is wide, the problem that the skin is injured due to improper manual operation is solved, and safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, in particular to a rollover lock of a semi-trailer. Background Art

[0002] Container transport semi-trailers usually have locks installed in the middle of the semi-trailer to accommodate containers of different sizes. For example, a semi-trailer can transport both one standard 40-foot container and two 40-foot containers. When transporting a standard 40-foot container, the lock head of the lock falls below the load-bearing surface of the semi-trailer, and the lock does not participate in the fixation of the standard 40-foot container. When transporting two standard 20-foot containers, the lock head rises and fixes the containers.

[0003] Existing locks generally use lifting locks. For details, please refer to the lifting lock for a semi-trailer provided by Patent No. 202321679210.9. When the lifting lock is used to lock the container, the lock seat needs to be pulled upwards. When the lock seat rises to the set height, it cooperates with the bracket to position, thereby raising the height of the entire lock. When pulling the lock seat to lift, a person needs to reach into the bottom of the frame and use the sense of touch to find the lock seat before pulling the lock seat up. Not only is the operation troublesome, but it is also easy to scratch the skin.

[0004] Therefore, it is necessary to improve the container locks of the semi-trailer. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a flip lock for a semi-trailer, aiming to simplify the lock operation and improve the safety of the operation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A flip lock for a semi-trailer comprises a lock, two vertical and spaced side plates, and a top plate connecting the two side plates, wherein the top plate is provided with a slot for the lock to extend out, and a storage chamber for the lock to flip and move is formed between the two side plates. The lock comprises a core rod, a lock head fixedly connected to the top of the core rod, a handle fixedly connected to the bottom of the core rod, a lock seat sleeved on the core rod, a sleeve fixedly connected to the bottom of the lock head and sleeved on the core rod, and an ear plate fixedly arranged on the side wall of the sleeve, the two side plates are connected by a fixed shaft extending left and right, the ear plate is rotatably connected to the fixed shaft, and the ear plate is fixed by a locking structure to keep the lock in an upright state.

[0008] As a further improvement of the above technical solution, the handle is an L-shaped structure, a locking waist plate is provided at the bottom end of the core rod, and the two side plates are provided with a slot for the locking waist plate to rotate and extend into.

[0009] As a further improvement of the above technical solution, the locking structure includes a positioning pin, a first socket opened on the ear plate, and a second socket opened on the two side panels. The positioning pin can simultaneously pass through the first socket and the two second sockets to position the lock.

[0010] As a further improvement of the above technical solution, the positioning pin is an L-shaped structure, an anti-dropout pin is provided on the insertion end of the positioning pin, a first notch is provided on the side of the first socket for the anti-dropout pin to pass through, and a second notch is provided on the side of the second socket for the anti-dropout pin to pass through.

[0011] As a further improvement of the above technical solution, a pin hanger for placing the positioning pin is fixedly provided on one of the side panels.

[0012] The flip lock of the semitrailer also includes a chain, one end of the chain is fixedly connected to one of the side plates, and the other end of the chain is fixedly connected to the positioning latch.

[0013] As a further improvement of the above technical solution, a horizontal front limit plate and a rear limit plate are provided between the two side plates. The height of the front limit plate is lower than that of the rear limit plate. The front limit plate is used to limit the horizontal lock, and the rear limit plate is used to limit the vertical lock.

[0014] As a further improvement of the above technical solution, a reinforced square tube is fixedly connected to the bottom surface of the top plate, and a rib plate for reinforcing the connection between the two side plates is provided below the front limit plate and the rear limit plate.

[0015] As a further improvement of the above technical solution, the lock head includes an integrally formed base portion and a truncated cone portion.

[0016] As a further improvement of the above technical solution, the fixed shaft includes a main shaft and a limit head arranged at one end of the main shaft and larger than the diameter of the main shaft; the end of the main shaft away from the limit head is sleeved with a retaining ring and a limit pin.

[0017] The beneficial effects of the utility model are as follows: compared with the prior art, the flip lock provided by the utility model only requires the driver to operate the handle, which can not only drive the lock to flip to adjust the lock height, but also enable the lock head and the lock seat to extend out of the load-bearing surface of the semi-trailer or be hidden in the storage cavity. It is simple to operate and has a wide range of uses. It also solves the problem of skin injuries caused by improper manual operation and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model provides a three-dimensional flip lock in a non-working state. Figure 1 .

[0019] Figure 2The utility model provides a three-dimensional flip lock in a non-working state. Figure 2 .

[0020] Figure 3 This is a cross-sectional view of the flip lock provided by the utility model in a non-working state.

[0021] Figure 4 The utility model provides a three-dimensional flip lock in the working state. Figure 1 .

[0022] Figure 5 The utility model provides a three-dimensional flip lock in the working state. Figure 2 .

[0023] Figure 6 This is a cross-sectional view of the flip lock provided by the utility model in a working state.

[0024] Figure 7 A three-dimensional diagram of the lock.

[0025] Figure 8 It is a schematic diagram of the combination of the core rod, lock, handle and locking waist plate.

[0026] Explanation of the main component symbols: 1-lock, 11-core rod, 12-lock head, 121-base part, 122-truncated cone part, 13-handle, 14-lock seat, 15-sleeve, 16-ear plate, 161-transfer through hole, 17-locking waist plate, 21-side plate, 211-slot, 22-top plate, 23-notch, 24-storage cavity, 25-front limit plate, 26-rear limit plate, 27-reinforced square tube, 28-rib plate, 31-positioning pin, 32-anti-drop pin, 33-first socket, 34-first notch, 35-second socket, 36-second notch, 37-pin hanger, 38-chain, 41-fixed shaft, 411-spindle, 412-limit head, 42-retaining ring, 43-limit pin. DETAILED DESCRIPTION

[0027] The utility model provides a flip lock for a semi-trailer. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the protection scope of the utility model.

[0028] See also Figure 1-Figure 8The utility model provides a flip lock for a semi-trailer, comprising a lock 1, two vertical and spaced side plates 21, a top plate 22 connecting the two side plates 21, a notch 23 for the lock 1 to extend out is formed on the top plate 22, and a storage chamber 24 for the lock 1 to flip and move is formed between the two side plates 21. The lock 1 comprises a core rod 11, a lock head 12 fixedly connected to the top of the core rod 11, a handle 13 fixedly connected to the bottom of the core rod 11, a lock seat 14 sleeved on the core rod 11, a sleeve 15 fixedly connected to the bottom of the lock head 12 and sleeved on the core rod 11, and an ear plate 16 fixedly arranged on the side wall of the sleeve 15, the two side plates 21 are connected by a fixed shaft 41 extending left and right, the ear plate 16 is rotatably connected to the fixed shaft 41, and the ear plate 16 is fixed by a locking structure to keep the lock 1 in an upright state.

[0029] The flip lock is fixed on the frame of the semitrailer, the top plate 22 and the side plates 21 are fixed on the semitrailer by welding, and the top plate 22 is flush with the bearing surface of the semitrailer.

[0030] See also Figure 1-Figure 3 When a small-sized container (20-foot container) is to be locked with a flip lock, the handle 13 is pulled downward, and the lock 1 flips around the fixed axis 41, and the lock 1 changes from a horizontal state to an upright state, that is, the lock seat 14 and the lock head 12 also extend out of the notch 23 from the storage cavity 24, thereby raising the height of the entire lock 1, so that the lock seat 14 and the lock head 12 are higher than the load-bearing surface of the semi-trailer, and then the locking structure cooperates with the ear plate 16 to limit the rotation of the lock 1, so that the lock 1 remains in an upright state, and then the container is hoisted onto the semi-trailer. At this time, the locking interface of the container is aligned with the lock head 12 of the lifting lock, and the lock head 12 extends into the locking interface of the container, and then the handle 13 is turned to drive the lock head 12 to rotate 90° through the core rod 11, and the container is quickly locked.

[0031] See also Figure 4-Figure 6 On the contrary, when the semi-trailer is to be loaded with a large-sized container (40-foot container), in order to prevent the lock head 12 and the lock seat 14 of the flip lock from interfering with the transportation of some large-sized containers, the locking structure and the ear plate 16 are first released from cooperation, the handle 13 is rotated in the opposite direction, and the lock head 12 is driven by the core rod 11 to rotate 90° in the opposite direction to achieve unlocking first, and then the handle 13 is pushed upward, and the lock 1 is flipped around the fixed axis 41, and the lock 1 is changed from an upright state to a horizontal state, thereby reducing the height of the entire lock 1, so that the lock seat 14 and the lock head 12 are lower than the load-bearing surface of the semi-trailer, and the lock seat 14 and the lock head 12 are hidden in the storage cavity 24.

[0032] Compared with the prior art, the flip lock provided by the utility model only requires the driver to operate the handle 13, which can not only drive the lock 1 to flip to adjust the height of the lock 1, but also enable the lock head 12 and the lock seat 14 to extend out of the load-bearing surface of the semi-trailer or be hidden in the storage cavity 24. It is simple to operate and has a wide range of uses. It also solves the problem of skin injuries caused by improper manual operation and has high safety.

[0033] Specifically, the handle 13 is an L-shaped structure, the bottom end of the core rod 11 is provided with a locking waist plate 17, and the two side plates 21 are provided with a locking groove 211 for the locking waist plate 17 to rotate and extend into. When locking the container, the lock head 12 extends into the locking interface of the container, and the handle 13 is turned to drive the lock head 12 to rotate 90 degrees through the core rod 11, so as to quickly complete the locking of the container. At this time, the locking waist plate 17 also changes from being located between the two side plates 21 to being rotated and extended into the locking groove 211, which plays a role in stopping the rotation of the locked lock 1.

[0034] For details, please refer to Figure 7 and Figure 8 The locking structure includes a positioning pin 31, a first plug hole 33 provided on the ear plate 16, and a second plug hole 35 provided on the two side plates 21. When the lock 1 is flipped to the upright state, the first plug hole 33 and the second plug hole 35 form a coaxial line. At this time, although the rear side of the lock 1 is limited by the rear limit plate 26, during the transportation of the semi-trailer, the lock 1 is affected by the bumps and there is a possibility of forward rotation, which affects the working stability of the lock 1. Therefore, the positioning pin 31 needs to be used to simultaneously pass through the first plug hole 33 and the two second plug holes 35 to position the lock 1 and limit the rotation of the lock 1 during the working process.

[0035] Furthermore, the positioning pin 31 is an L-shaped structure, that is, the positioning pin 31 includes an insertion rod and a hand grip rod, and an anti-drop pin 32 is provided on the insertion end of the positioning pin 31. A first notch 34 for the anti-drop pin 32 to pass through is provided on the side of the first insertion hole 33, and a second notch 36 for the anti-drop pin 32 to pass through is provided on the side of the second insertion hole 35. The driver's hand grip rod of the positioning pin 31 is not only convenient for inserting the insertion rod into the first insertion hole 33 and the second insertion hole 35, but also convenient for rotating the insertion rod. It can be understood that when inserting the insertion rod, the anti-drop pin 32 needs to be aligned with the first notch 34 and the second notch 36. After the insertion rod passes through the first insertion hole 33 and the second insertion hole 35, the hand grip rod is rotated 90° counterclockwise, and the anti-drop pin 32 will face downward. Even if the insertion rod moves in the direction of disengaging from the side plate 21, since the anti-drop pin 32 is not aligned with the second notch 36, it prevents the insertion rod from disengaging from the side plate 21, thereby improving the reliability of the positioning pin 31.

[0036] Since the positioning pin 31 does not need to cooperate with the lock 1 in the non-working state, the positioning pin 31 is in an idle state, so a pin hanger 37 for placing the positioning pin 31 is fixedly provided on one of the side plates 21. In this embodiment, the pin hanger 37 is a square tube and a positioning groove cooperating with the anti-drop pin 32 is provided on the downward end surface of the pin hanger 37 to ensure that after the positioning pin 31 is inserted into the pin hanger 37, it will not rotate significantly due to the restriction of the anti-drop pin 32 and the positioning groove.

[0037] In order to prevent the positioning pin 31 from being lost or from falling off the pin hanger 37 due to vibration during transportation and causing an accident, the positioning pin 31 is restrained by a chain 38, one end of the chain 38 is fixedly connected to one of the side panels 21, and the other end of the chain 38 is fixedly connected to the positioning pin 31, and the fixing method can be welding.

[0038] In order to limit the position of the lock 1 in the working state and the non-working state, a horizontal front limit plate 25 and a rear limit plate 26 are provided between the two side plates 21 , and the height of the front limit plate 25 is lower than that of the rear limit plate 26 .

[0039] When not in operation, push the handle 13 upwards, and the lock 1 will flip over and press against the front limit plate 25, then the lock 1 will be in a horizontal position, and under the action of gravity, the center of gravity of the lock 1 will be close to the front limit plate 25, so that even if the semi-trailer is in transportation, the lock 1 will be stably stored in the storage cavity 24 without any bumps.

[0040] When in working state, the handle 13 is pulled downward, the lock 1 is turned over and pressed against the rear limit plate 26, and the lock 1 becomes in an upright state. Under the restriction of the positioning pin 31, the lock 1 is ensured not to jump and tilt during the transportation of the semi-trailer, thereby causing failure of fixing the container.

[0041] In order to improve the structural strength of the flip lock and improve the working stability of the flip lock, a reinforcing square tube 27 is fixedly connected to the bottom surface of the top plate 22, and the reinforcing square tube 27 extends along the front and rear directions. A rib plate 28 is provided below the front limit plate 25 and the rear limit plate 26 to strengthen the connection between the two side plates 21.

[0042] The lock head 12 comprises an integrally formed base portion 121 and a truncated cone portion 122. This arrangement facilitates the lock head 12 to cooperate with the locking interface of the container, thereby facilitating rapid loading and unloading of the container.

[0043] Specifically, the fixed shaft 41 includes a main shaft 411 and a stopper head 412 disposed at one end of the main shaft 411 and larger than the diameter of the main shaft 411; a transfer through hole 161 is provided on the ear plate 16 for the main shaft 411 to pass through, and a retaining ring 42 and a limit pin 43 are provided on the end of the main shaft 411 away from the stopper head 412. The stopper head 412 and the stopper ring 42 cooperate with each other to clamp the fixed shaft 41 on the two side plates 21, thereby axially positioning the fixed shaft 41. The limit pin 43 is preferably a cotter pin, which can prevent the fixed shaft 41 from detaching from the side plate 21.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A flip lock for a semitrailer, characterized in that: The invention comprises a lock, two vertical and spaced-apart side panels, and a top panel connecting the two side panels, wherein the top panel is provided with a slot for the lock to extend out, and a storage chamber for the lock to flip over is formed between the two side panels. The lock comprises a core rod, a lock head fixedly connected to the top of the core rod, a handle fixedly connected to the bottom of the core rod, a lock seat sleeved on the core rod, a sleeve fixedly connected to the bottom of the lock head and sleeved on the core rod, and an ear plate fixedly arranged on the side wall of the sleeve, wherein the two side panels are connected by a fixed shaft extending left and right, the ear plate is rotatably connected to the fixed shaft, and the ear plate is fixed by a locking structure to keep the lock in an upright state.

2. The flip lock of a semitrailer according to claim 1, characterized in that: The handle is an L-shaped structure, the bottom end of the core rod is provided with a clamping waist plate, and the two side plates are provided with clamping grooves for the clamping waist plate to rotate and extend into.

3. The flip lock of a semitrailer according to claim 1, characterized in that: The locking structure comprises a positioning pin, a first insertion hole provided on the ear plate, and second insertion holes provided on the two side plates. The positioning pin can simultaneously pass through the first insertion hole and the two second insertion holes to position the lock.

4. The flip lock of a semitrailer according to claim 3, characterized in that: The positioning pin is an L-shaped structure, and an anti-dropout pin is provided on the insertion end of the positioning pin. A first notch for the anti-dropout pin to pass through is provided on the side of the first insertion hole, and a second notch for the anti-dropout pin to pass through is provided on the side of the second insertion hole.

5. The flip lock of a semitrailer according to claim 4, characterized in that: A latch hanger for placing a positioning latch is fixedly provided on one of the side panels.

6. The flip lock for a semitrailer according to any one of claims 3 to 5, characterized in that: It also includes a chain, one end of which is fixedly connected to one of the side plates, and the other end of which is fixedly connected to a positioning pin.

7. The flip lock of a semitrailer according to claim 1, characterized in that: A horizontal front limit plate and a rear limit plate are provided between the two side plates. The height of the front limit plate is lower than that of the rear limit plate. The front limit plate is used to limit the horizontal lock, and the rear limit plate is used to limit the vertical lock.

8. The flip lock of a semitrailer according to claim 7, characterized in that: A reinforced square tube is fixedly connected to the bottom surface of the top plate, and a rib plate for reinforcing the connection between the two side plates is provided below the front limit plate and the rear limit plate.

9. The flip lock of a semitrailer according to claim 1, characterized in that: The lock head comprises a base portion and a truncated cone portion which are integrally formed.

10. The flip lock of a semitrailer according to claim 1, characterized in that: The fixed shaft comprises a main shaft and a limit head which is arranged at one end of the main shaft and is larger than the diameter of the main shaft; a retaining ring and a limit pin are provided on the end of the main shaft away from the limit head.

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