Container stacking bridge lock

Abstract

The utility model relates to the technical field of container lock catches, in particular to a container stacking bridge lock which comprises a fixed lock, a lock base and a trigger type lock, and the trigger type lock and the fixed lock are arranged at the two ends of the lock base respectively and used for being inserted into corner fitting holes of adjacent containers respectively to fix the containers. The trigger type lockset comprises a lifting pin and a spring bolt which are movably arranged on the lockset base in a penetrating mode, in the initial state, the lifting pin protrudes out of the lower side surface of the lockset base, and the spring bolt does not exceed the lower side surface of the lockset base; and after being extruded by the container corner fittings, the lifting pins drive the spring bolts to be downwards inserted into the corresponding corner fitting holes. According to the bridge lock, the spring bolt with higher hardness is hidden in the spring bolt sleeve, and the smaller and weaker lifting pin is used as a trigger point of the spring bolt, so that the damage to paint on the surface of a box body can be reduced during stacking, the downward extension length of the spring bolt can be ensured, the stress capacity of the bridge lock is enhanced, and the stacking strength of a fixed container is improved.

Description

Technical Field

[0001] This utility model relates to the field of container locking technology, specifically to container stacking bridge locks. Background Technology

[0002] Traditional typhoon protection measures for stacked finished goods containers involve securing the front and back of the stack with windproof belts. While this method is effective, the windproof belts have a lifespan of only about two years. After two years, their strength decreases significantly, reducing their effectiveness. Complete replacement requires substantial manpower and resources. Furthermore, once a typhoon warning is issued, additional personnel and equipment are needed to reinforce key areas of the containers to ensure safe storage, further increasing typhoon protection costs.

[0003] It was later upgraded to a traditional reinforced bridge lock. Traditional bridge locks require personnel to install them on-site on top of the boxes after the finished boxes are stacked. The working area is 3-21 meters high. Although the accessory can meet the typhoon protection requirements, the operation on top of the box stack is a level 3 high-altitude operation, which poses a serious safety hazard of personnel falling from height. Therefore, it cannot be used in the daily operation of stacking finished boxes and cannot be fully promoted.

[0004] Based on this, the applicant previously applied for a utility model patent with application number 202122314234.1, entitled "Container Stacking Inter-row Connector". This connector is made with reference to a 3-ton windproof belt. It is fixed in one form and hooks the top of the previous container at a height of 4-6 between the first and second rows of the container stack, avoiding the hidden dangers of high-altitude operations. However, the connector is made of channel steel cut and welded, and the hook is the side wing of the channel steel. The steel thickness and the downward extension length of the hook are insufficient, the steel structure is not strong enough, the front hook is small and easy to disengage, and the safety is not enough. Utility Model Content

[0005] The purpose of this invention is to provide a container stacking bridge lock to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a container stacking bridge lock, including a fixed lock and a lock base, and further including a trigger-type lock. The trigger-type lock and the fixed lock are respectively disposed at both ends of the lock base and are used to insert into the corner fitting holes of adjacent containers to fix the containers. The trigger-type lock includes a top pin and a locking tongue that are movably inserted through the lock base. In the initial state, the top pin protrudes from the lower surface of the lock base, and the locking tongue does not exceed the lower surface of the lock base. After being squeezed by the corner fitting of the container, the top pin drives the locking tongue to insert downward into the corresponding corner fitting hole.

[0007] Preferably, the trigger-type lock further includes a trigger, a compression spring, a top pin sleeve, and a latch sleeve. The top pin sleeve and the latch sleeve are both fixed to the lock base and protrude vertically from the upper surface of the lock base.

[0008] The top pin and the locking tongue are respectively disposed in the top pin sleeve and the locking tongue sleeve. One end of the compression spring is fixed to the inner top of the top pin sleeve, and the other end abuts against the top of the top pin. A fixed rotating shaft passes through the middle of the trigger. One end of the trigger passes through the top pin sleeve and is hinged to the top of the top pin. The other end is a hook. In the initial state, the hook passes through the locking tongue sleeve and hooks the locking tongue.

[0009] Preferably, a reinforcing plate is provided on the lock base, and the reinforcing plate is vertically fixed to both the lock base and the lock tongue sleeve.

[0010] Preferably, the lock base is provided with an observation plate, the top of which is connected to the side of the latch sleeve via a hinge, and the side of the top is also connected to a crank, which is rotatably connected to a connecting rod via a pin; the latch sleeve has a longitudinal first elongated hole, and the latch is fixed with a pin, which passes through the first elongated hole and is connected to the connecting rod; in the initial state, the observation plate is attached to the outside of the latch sleeve and parallel to the end of the container, and the pin is located at the top of the first elongated hole.

[0011] Preferably, the connecting rod has a second longitudinal hole, which is shorter than the first long hole, and the pin passes through the second long hole; in the initial state, the pin is located at the top of the second long hole.

[0012] Preferably, the fixed lock includes a mounting base, which is fixed to the lock base and protrudes from the lower surface of the lock base; the mounting base and the locking tongue are respectively inserted into the upper corner pieces of two horizontally adjacent containers to horizontally lock the two containers.

[0013] Preferably, the fixed lock includes a mounting base and a cone, the mounting base and the cone are fixed to the lock base, the mounting base protrudes from the upper surface of the lock base, and the cone protrudes from the lower surface of the lock base;

[0014] The mounting base is inserted into the lower corner piece of the container to be stacked and fixed thereto. The stacking cone is inserted into the upper corner piece of the first container. The locking tongue is inserted into the upper corner piece of the second container. The first container and the second container are laterally adjacent, and the first container and the container to be stacked are longitudinally adjacent.

[0015] Preferably, the mounting base includes a mounting top plate and a mounting base, the mounting top plate, the mounting base and the lock base are welded in sequence, the outer diameter of the mounting base, the outer diameter of the mounting top plate and the inner diameter of the corresponding corner fitting hole increase in sequence, the mounting top plate passes through the corresponding corner fitting hole and is locked inside the corner fitting after rotation, so as to lock the mounting base and the corner fitting.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] ①This utility model hides the harder locking tongue inside the locking tongue sleeve and uses a smaller and weaker top pin as the trigger point of the locking tongue. This not only reduces damage to the paint on the surface of the container during stacking, but also ensures the extension length of the locking tongue, enhances the load-bearing capacity of the bridge lock, and thus increases the stacking strength of the fixed containers.

[0018] ②This utility model connects adjacent containers when stacking containers. The force design meets the requirement of 10 tons of tensile force, ensuring the stability of the entire container column. It has a good wind resistance effect during the typhoon season. It is not only more effective than the existing 8-ton windproof belts in various container yards and terminals, but also far greater than the connectors of existing patents.

[0019] ③ This utility model is equipped with an observation board to help determine whether the bridge lock is in working condition, thereby increasing the safety of container stacking.

[0020] ④ This utility model provides two embodiments, which can be used to reinforce and connect two adjacent containers as a whole after the container is fully stacked, or to reinforce and connect the top three containers of adjacent stacks as a whole during the process of stacking the first three stacks of containers one by one. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the upper corner bridge lock of this utility model in the non-working state;

[0022] Figure 2 This is a structural schematic diagram of the lower corner bridge lock of this utility model in the non-working state;

[0023] Figure 3 This is a structural diagram of the lower corner bridge lock (without the lock tongue sleeve and top pin sleeve) in the non-working state.

[0024] Figure 4 yes Figure 2 The main view;

[0025] Figure 5 This is a schematic diagram of the locking tongue of this utility model;

[0026] Figure 6 This is a schematic diagram of the trigger of this utility model;

[0027] Figure 7 This is a structural schematic diagram of the lower corner bridge lock of this utility model from another perspective when it is not in operation;

[0028] Figure 8 This is a structural schematic diagram of the lower corner bridge lock of this utility model in its working state (corresponding to...). Figure 7 (Perspective);

[0029] Figure 9 yes Figure 8 The left view;

[0030] Figure 10 These are schematic diagrams illustrating the practical application of two embodiments of this utility model. Detailed Implementation

[0031] This utility model discloses a container stacking bridge lock, see reference. Figures 1 to 5 The system includes a fixed lock, a trigger lock, and a lock base 1. The trigger lock and the fixed lock are respectively located at both ends of the lock base 1 and are used to insert into the corner fitting holes of adjacent containers to secure them. The lock base 1 is rectangular and plate-shaped, with one end near the trigger lock curving upwards. This curving end prevents damage to the paint or panels on the top of the front container due to a right angle during use. The trigger lock includes a top pin 4 and a latch 5 that are movably inserted through the lock base 1. The top pin 4 serves as the trigger point for the latch 5, causing it to fall down and insert into the corresponding corner fitting hole.

[0032] This utility model provides two embodiments of container stacking bridge locks according to actual stacking needs: upper corner bridge locks and lower corner bridge locks. The key difference between the two lies only in the fixing device: the fixing device in the upper corner bridge lock only includes the mounting base 2, while the fixing device in the lower corner bridge lock includes both the mounting base 2 and the stacking cone 3. The upper and lower corner bridge locks respectively achieve the following two functions: the upper corner bridge lock is used for overall reinforcement and connection of the top two adjacent containers after the container stack is full; the lower corner bridge lock is used for overall reinforcement and connection of the top three containers of adjacent stacks during the process of stacking the first three stacks in turn.

[0033] Mounting base 2 includes a mounting top plate 21 and a mounting base 22. The mounting top plate 21, mounting base 22, and lock base 1 are welded together sequentially. The outer diameter of the mounting base 22, the outer diameter of the mounting top plate 21, and the inner diameter of the corresponding corner fitting hole increase sequentially. The mounting top plate 21 passes through the corresponding corner fitting hole and, after rotation, locks itself inside the corner fitting to lock the mounting base 2 to the corner fitting. Therefore, mounting base 2 maintains the stability of the bridge lock during container stacking and is used for reinforcement and locking of the container after stacking.

[0034] The specific structure and operating principle of the mounting base 2 can be found in the structure of the third locking part in the utility model patent with application number 202122314234.1 mentioned in the background art. The mounting top plate 21 corresponds to the lug of the third locking part, and the mounting base 22 corresponds to the sleeve of the third locking part. The specific structure of the stacking cone 3 in the lower corner bridge lock can be found in the structure of the first locking part in the same utility model patent. After the mounting base 2 is fixed to the corresponding corner piece, the entire bridge lock is at a 90° angle to the container body to ensure that the locking tongue 5 and the stacking cone 3 in the lower corner bridge lock can be precisely inserted into the corresponding container corner piece.

[0035] For the upper corner bridge lock: such as Figure 1 As shown, the mounting base 2 protrudes from the lower surface of the lock base 1; the mounting base 2 and the locking tongue 5 are respectively inserted into the upper corner pieces of two horizontally adjacent containers to horizontally lock the two containers.

[0036] For corner bracket bridge locks: such as Figure 2 As shown, the mounting base 2 and the stacking cone 3 are welded to the lock base 1 and are respectively located on the upper and lower sides of the lock base 1. The mounting base 2 protrudes from the upper surface of the lock base 1, and the stacking cone 3 protrudes from the lower surface of the lock base 1. The mounting base 2 is inserted into the lower corner piece of the container to be stacked and fixed thereto. The stacking cone 3 is inserted into the upper corner piece of the first container, and the locking tongue 5 is inserted into the upper corner piece of the second container. The first container and the second container are laterally adjacent, and the first container and the container to be stacked are longitudinally adjacent.

[0037] The trigger-type locks in the two types of bridge locks mentioned above have the same structure. In this description, the corner bracket bridge lock will be used as an example. (See attached document.) Figures 2 to 6 :

[0038] The trigger-type lock also includes a trigger 81, a compression spring 84, a top pin sleeve 6, and a latch sleeve 7. The top pin sleeve 6 and the latch sleeve 7 are both welded to the lock base 1 and protrude vertically from the upper surface of the lock base 1. The latch 5 is located in the latch sleeve 7, and the top pin 4 is located in the top pin sleeve 6.

[0039] like Figure 5 As shown, the latch 5 is formed by two panels 51 and two side plates 52 welded together. The two panels 51 are bent at the bottom to form a cone shape to facilitate insertion into the corner fitting hole. Two stiffening plates 53 are welded inside the latch 5 to increase the strength of the latch 5. The stiffening plates 53 are parallel to the side plates 52 and are welded to the two panels 51 on both sides respectively.

[0040] One end of the compression spring 84 is fixed to the inner top of the top of the top pin sleeve 6, and the other end abuts against the top of the top pin 4. The compression spring 84 provides a downward pushing force to the top pin 4. A fixed rotating shaft 83 passes through the middle of the trigger 81. One end of the trigger 81 passes through the top pin sleeve 6 and is hinged to the top of the top pin 4. The other end is a hook 82, such as... Figure 6As shown. The panel 51 on the side of the latch 5 closest to the trigger 81 has a hook hole 54 for the hook 82 to engage. To facilitate the connection of the trigger 81 to the latch 5, the corresponding side panel 52 of the latch sleeve 7 also has a through hole larger than the hook hole 54 of the latch 5. In the initial state, see references 3 and... Figure 4 The top pin 4 protrudes from the lower surface of the lock base 1, and the hook 82 passes through the latch sleeve 7 to hook the latch 5. Therefore, when there is no external force, the two ends of the trigger 81 are balanced to restrict the latch 5 in the latch sleeve 7 so that it cannot exceed the lower surface of the lock base 1.

[0041] After being squeezed by the container corner fitting, the top pin 4 is pushed into the top pin sleeve 6, which at the same time drives the trigger 81 to rotate, causing the locking tongue 5 to disengage from the hook head 82. Under the action of gravity, the locking tongue 5 falls and protrudes from the lower surface of the lock base 1 until it is inserted into the corresponding corner fitting hole. Figure 3 The movement directions of the top pin 4 and the locking tongue 5 are indicated by arrows. The linkage structure between the top pin 4 and the locking tongue 5 is unidirectional, achieved solely through the trigger 81 and a spring, simplifying commonly used linkage structures. The locking tongue sleeve 7 can retract the locking tongue 5 into itself when the bridge lock is not in operation, extending the service life of the locking tongue 5. Furthermore, when the bridge lock is in operation, the locking tongue sleeve 7 can also provide auxiliary reinforcement.

[0042] A reinforcing plate 11 is provided on the lock base 1, and the reinforcing plate 11 is vertically welded to both the lock base 1 and the bolt sleeve 7. The reinforcing plate 11 provides local reinforcement to the surface of the lock base 1 to ensure that when the bridge lock is subjected to external force, the surface of the lock base 1 will not warp upwards, causing the bolt 5 to flip out and lose its reinforcing function. The number, size, and shape of the reinforcing plates 11 can be adjusted according to the needs of different bridge locks. Figure 1 and Figure 2 ,compared to Figure 2 The reinforcing plate 11 of the lower corner bridge lock, Figure 1 The upper corner bridge lock utilizes the gap on the upper surface to install an additional reinforcing plate 11, but its length is shorter.

[0043] Meanwhile, the reinforcing plate 11 can also be used to support the rotating shaft 83 of the trigger 81, which is welded to the reinforcing plate 11. A sleeve reinforcing member 12 is also provided on the lock base 1. The sleeve reinforcing member 12 surrounds the bottom of the lock tongue sleeve 7 and is welded to the lock base 1, strengthening the connection between the lock tongue sleeve 7 and the lock base 1, and further enhancing the load-bearing capacity of the plate surface of the lock base 1.

[0044] Combination Figures 7 to 9An observation plate 13 is also provided on the lock base 1. The top of the observation plate 13 is connected to the side of the latch sleeve 7 via a hinge 91. The two hinges of the hinge 91 are welded to the latch sleeve 7 and the observation plate 13 respectively. A crank 92 is also connected to the side of the top of the observation plate 13. The crank 92 can be regarded as a quarter ring. One end is welded to the observation plate 13, and the other end is rotatably connected to the connecting rod 94 via a pin 93. The latch sleeve 7 has a longitudinal first elongated hole 71. The latch 5 is fixed with a pin 55, which passes through the first elongated hole 71 and connects to the connecting rod 94. In the initial state, as Figure 7 As shown, the observation plate 13 is attached to the outside of the locking tongue sleeve 7 and parallel to the end of the container, and the pin 55 is located at the top of the first elongated hole 71.

[0045] The connecting rod 94 has a longitudinal second elongated hole 95, which is shorter than the first elongated hole 71. The pin 55 passes through the second elongated hole 95. In the initial state, as Figure 7 As shown, pin 55 is located at the top of the second elongated hole 95. By setting the second elongated hole 95, the height difference between the first elongated hole 71 and the second elongated hole 95 at the bottom can be used to drive the connecting rod 94 to move, so that the observation plate 13 flips up during the second half of the descent of the locking tongue 5, thereby ensuring that the observation plate 13 can be fully flipped up after the locking tongue 5 is fully inserted into the corner fitting hole.

[0046] The connection structure between the locking tongue 5 and the observation plate 13 allows the observation plate 13 to naturally droop due to gravity under normal conditions. It will only flip up when subjected to an external force, which is provided by the locking tongue 5 falling and the bridge lock entering the working state. Therefore, the observation plate 13 will not flip up when the locking tongue 5 is not ejected. The linkage principle between the locking tongue 5 and the observation plate 13 is as follows: After the top pin 4 is squeezed by the container corner fitting, the pin 55 falls with the locking tongue 5 and drives the connecting rod 94, the crank 92, and the observation plate 13 to move. Specifically, the pin 55 follows the movement of the locking tongue 5 and gradually falls to the bottom of the second long hole 95, thereby driving the connecting rod 94 to descend, which in turn drives the crank 92 to move, which in turn drives the observation plate 13 to flip up. The observation plate 13 can only be fully flipped up after the pin 55 has completely fallen to the bottom of the first long hole 71.

[0047] Through structural design of crank 92, connecting rod 94, etc., it can be achieved that after the observation plate 13 is fully flipped up, the observation plate 13 and the locking tongue sleeve 7 form a 90° angle. (See reference...) Figure 9 This makes it easier to visually observe and confirm the working status of the bridge lock: when the bridge lock is in a non-working state (i.e., when all components are in the initial state), the latch 5 is inside the latch sleeve 7, and the observation plate 13 is close to the latch sleeve 7; when the bridge lock is in a working state (i.e., after the top pin 4 is squeezed by the container corner fitting), the latch 5 falls and is normally inserted into the corner fitting hole, which causes the observation plate 13 to flip up.

[0048] Based on the above structure, the following are practical application diagrams of the upper corner bridge lock and the lower corner bridge lock, as shown: Figure 10 As shown in the figure, the red part at the top is the upper corner bridge lock of this utility model, which is used to reinforce the connection between two adjacent containers after the container is fully stacked; the red part in the lower middle part is the lower corner bridge lock of this utility model, which is used to reinforce the connection between the top three containers of adjacent stacks during the process of stacking the first three stacks of containers.

[0049] In summary, this invention conceals a harder locking tongue within a locking tongue sleeve and uses a smaller, weaker top pin as the trigger point for the locking tongue. This not only reduces damage to the paint on the container surface during stacking but also ensures the extension length of the locking tongue, enhancing the load-bearing capacity of the bridge lock and thus increasing the stacking strength of the secured containers. Furthermore, the improved bridge lock's tensile strength test meets the requirement of ten tons of force, ensuring the stability of the entire column of containers and providing excellent wind resistance during typhoon season. Additionally, this invention is equipped with an observation plate to assist in determining whether the bridge lock is in working order, increasing safety during stacking.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A container stacking bridge lock, comprising a fixed lock and a lock base (1), characterized in that: It also includes a trigger-type lock, which and the fixed lock are respectively disposed at both ends of the lock base (1) and are respectively used to insert into the corner fitting holes of adjacent containers to fix the containers; the trigger-type lock includes a top pin (4) and a locking tongue (5) that are movably inserted through the lock base (1). In the initial state, the top pin (4) protrudes from the lower surface of the lock base (1) and the locking tongue (5) does not exceed the lower surface of the lock base (1); after the top pin (4) is squeezed by the corner fitting of the container, it drives the locking tongue (5) to insert downward into the corresponding corner fitting hole.

2. The container stacking bridge lock according to claim 1, characterized in that: The trigger-type lock also includes a trigger (81), a compression spring (84), a top pin sleeve (6) and a latch sleeve (7). The top pin sleeve (6) and the latch sleeve (7) are both fixed to the lock base (1) and protrude vertically from the upper surface of the lock base (1). The top pin (4) and the locking tongue (5) are respectively disposed in the top pin sleeve (6) and the locking tongue sleeve (7). One end of the compression spring (84) is fixed to the top inner side of the top pin sleeve (6), and the other end abuts against the top of the top pin (4). A fixed rotating shaft (83) is provided through the middle of the trigger (81). One end of the trigger (81) passes through the top pin sleeve (6) and is hinged to the top of the top pin (4). The other end is a hook (82). In the initial state, the hook (82) passes through the locking tongue sleeve (7) and hooks the locking tongue (5).

3. The container stacking bridge lock according to claim 2, characterized in that: A reinforcing plate (11) is provided on the lock base (1), and the reinforcing plate (11) is vertically fixed to both the lock base (1) and the lock tongue sleeve (7).

4. The container stacking bridge lock according to claim 2, characterized in that: An observation plate (13) is provided on the lock base (1). The top of the observation plate (13) is connected to the side of the lock tongue sleeve (7) by a hinge. A crank (92) is also connected to the side of the top. The crank (92) is rotatably connected to the connecting rod (94) by a pin (93). The lock tongue sleeve (7) has a longitudinal first elongated hole (71). The lock tongue (5) is fixed with a pin (55). The pin (55) passes through the first elongated hole (71) and is connected to the connecting rod (94). In the initial state, the observation plate (13) is attached to the outside of the lock tongue sleeve (7) and parallel to the end of the container. The pin (55) is located at the top of the first elongated hole (71).

5. The container stacking bridge lock according to claim 4, characterized in that: The connecting rod (94) has a longitudinal second elongated hole (95), which is shorter than the first elongated hole (71). The pin (55) passes through the second elongated hole (95). In the initial state, the pin (55) is located at the top of the second elongated hole (95).

6. The container stacking bridge lock according to claim 1, characterized in that: The fixed lock includes a mounting base (2), which is fixed to the lock base (1) and protrudes from the lower surface of the lock base (1); the mounting base (2) and the locking tongue (5) are respectively inserted into the upper corner pieces of two horizontally adjacent containers to horizontally lock the two containers.

7. The container stacking bridge lock according to claim 1, characterized in that: The fixed lock includes a mounting base (2) and a cone (3). The mounting base (2) and the cone (3) are fixed to the lock base (1). The mounting base (2) protrudes from the upper surface of the lock base (1), and the cone (3) protrudes from the lower surface of the lock base (1). The mounting base (2) is inserted into the lower corner of the container to be stacked and fixed thereto. The stacking cone (3) is inserted into the upper corner of the first container. The locking tongue (5) is inserted into the upper corner of the second container. The first container and the second container are laterally adjacent, and the first container and the container to be stacked are longitudinally adjacent.

8. The container stacking bridge lock according to any one of claims 6 or 7, characterized in that: The mounting base (2) includes a mounting top plate (21) and a mounting base (22). The mounting top plate (21), the mounting base (22) and the lock base (1) are welded together in sequence. The outer diameter of the mounting base (22), the outer diameter of the mounting top plate (21) and the inner diameter of the corresponding corner fitting hole increase in sequence. The mounting top plate (21) passes through the corresponding corner fitting hole and is locked inside the corner fitting after rotation to lock the mounting base (2) and the corner fitting.

Images