A safety opening device for the door lock of a van

Abstract

The present invention discloses a safety opening device for a van door lock. The door lock is provided with an upper locking buckle, a lower locking buckle, a door bolt, and a connecting rod. Lock heads are provided at the upper and lower ends of the connecting rod, and the lock heads cooperate with lock seats on the door frame. The opening device includes a fixed seat, and a movable connecting plate is provided on the fixed seat. An unlocking mechanism, a bolt pulling mechanism, a bolt rotating mechanism, and a control system are provided on the connecting plate. The unlocking mechanism is located in the middle of the connecting plate and above the upper locking buckle. The bolt pulling mechanism is located on the left side of the unlocking mechanism and above the left end of the door bolt. The bolt rotating mechanism is located on the right side of the unlocking mechanism. The present invention solves the problems that the opening of the van door lock is time-consuming, laborious and unsafe, has a stable operation, is safe and reliable to use, and can achieve automation by adopting electro-hydraulic combined control.

Description

Technical Field

[0001] The present invention relates to the technical field of opening devices for van door locks, and specifically to a safety opening device for van door locks. Background Art

[0002] When transporting bulk goods, vans are generally used. Due to the extrusion of the bulk goods on the carriage wall and the carriage door, it is very laborious to open the door lock when unloading the goods. Moreover, after the door is opened, the bulk goods will pour out obliquely. If the workers opening the carriage door have no time to dodge, safety accidents will occur. At present, the door locks of vans generally use long-link bolts to lock the doors, especially at the rear doors of vans. This kind of door lock includes a relatively long link, which is very easy to deform. In this way, workers need to use a large amount of force to open the bolt, and sometimes even need to use a crowbar to open it, and there is a great danger. Therefore, a labor-saving and safe door opening device is needed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to provide a safety opening device for van door locks to overcome the above problems.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a safety opening device for van door locks. The door lock is provided with an upper lock catch, a lower lock catch, a bolt, and a link. The upper and lower ends of the link are provided with lock heads, and the lock heads cooperate with the lock seats on the door frame. The opening device includes a fixed seat, and a movable connecting plate is provided on the fixed seat. An unlocking mechanism, a bolt pulling mechanism, a bolt rotating mechanism, and a control system are provided on the connecting plate. The unlocking mechanism is located in the middle of the connecting plate and above the upper lock catch, and is used to open the upper lock catch. The bolt pulling mechanism is located on the left side of the unlocking mechanism and above the left end of the bolt, and is used to pull the bolt upward from the lower lock catch. The bolt rotating mechanism is located on the right side of the unlocking mechanism and is used to rotate the bolt outward so that the lock heads at both ends of the link are disengaged from the lock seats. The control system is used to control the operation of the entire opening device.

[0005] Preferably, a linear actuator is provided on the fixed seat. A horizontally arranged guide rail is provided on the right side of the linear actuator. A slider is provided on the guide rail. The left end of the slider is connected to the linear actuator, and the outer side of the slider is connected to the connecting plate. A positioning element is provided at the right end of the connecting plate. By setting this structure, the positioning element contacts the link on the door for positioning, so as to adapt to door locks of different specifications.

[0006] The unlocking mechanism includes a motor with a suction cup at its output end for attracting the upper locking buckle. An electromagnet is mounted on the suction cup. This structure generates magnetism when powered, causing the suction cup to attract the upper locking buckle. The motor then rotates, driving the upper locking buckle to rotate, thereby unlocking the upper locking buckle.

[0007] The bolt-pulling mechanism includes a vertically arranged hydraulic lift cylinder with a hook at its lower end for hooking onto the left end of the bolt. The hook is L-shaped and includes a vertically arranged U-shaped handle. The lower end of the handle is hingedly connected to a hook body via a rotating shaft. The hook body is provided with a resilient reset element. With this structure, when the hydraulic lift cylinder moves downward, the folding hook body contacts the bolt and folds toward the handle, allowing it to pass through the inside of the bolt. After passing through the bolt, the hook body returns to its original position under the action of the elastic force. When the hydraulic lift cylinder moves upward, the hook body hooks onto the bolt, thereby pulling the bolt out of the lower lock catch.

[0008] The bolt-turning mechanism includes a vertically arranged rotary hydraulic cylinder with a toggle plate at its lower end. When the bolt is pulled out of the lower lock catch, the rotary hydraulic cylinder is activated, rotating the toggle plate through a preset angle. Because the toggle plate is located inside the bolt, it rotates the bolt outward, thereby unlocking the door.

[0009] The control system is connected to the linear drive, positioning element, unlocking mechanism, bolt pulling mechanism, and bolt rotating mechanism; the opening device also includes a hydraulic system, which includes a pump station, a hydraulic valve, and an oil pipe, and is connected to the lifting hydraulic cylinder and the rotating hydraulic cylinder.

[0010] The fixing seat is provided with a magnet for manually controlling the opening and closing of the magnetic circuit. This structure is provided to facilitate the rapid fixing of the entire opening device on the vehicle door.

[0011] The control system includes a PLC controller and a remote control device, and adopts program control to realize automatic control and remote safe operation.

[0012] The beneficial effects of the present invention are:

[0013] The invention solves the problem that the door locks of vans are time-consuming, labor-intensive and unsafe to open. The invention has stable operation, quick response, small impact, safe and reliable use, and can realize automation by adopting electro-hydraulic combined control. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 , a schematic structural diagram of the present invention;

[0015] Figure 2 , a partial enlarged view of the present invention;

[0016] Figure 3 、Top view of the present invention;

[0017] Figure 4 、Front view of the present invention.

[0018] 1. Upper locking buckle; 2. Lower locking buckle; 3. Bolt; 4. Connecting rod; 5. Lock head; 7. Fixed seat; 7.1 Linear actuator; 7.2 Guide rail; 7.3 Slide block; 8. Connecting plate; 8.1 Positioning element; 9. Lock unlocking mechanism; 9.1 Motor; 9.2 Suction cup; 9.3 Electromagnet; 10. Bolt pulling mechanism; 10.1 Lifting hydraulic cylinder; 10.2 Hook; 11. Bolt rotating mechanism; 11.1 Rotating hydraulic cylinder; 11.2 Poking plate; 12. Control system; 13. Hook handle; 14. Hook body; 15. Rotating shaft. Detailed implementation manners

[0019] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0020] As Figures 1-4 shown, a safety opening device for a van door lock, the door lock is provided with an upper locking buckle 1, a lower locking buckle 2, a bolt 3, and a connecting rod 4. Lock heads 5 are provided at the upper and lower ends of the connecting rod 4, and the lock heads 5 cooperate with the lock seats on the door frame; the opening device includes a fixed seat 7, and a movable connecting plate 8 is provided on the fixed seat 7. An unlocking mechanism 9, a bolt pulling mechanism 10, a bolt rotating mechanism 11, and a control system 12 are provided on the connecting plate 8; the unlocking mechanism 9 is located in the middle of the connecting plate 8 and above the upper locking buckle 1 for unlocking the upper locking buckle 1; the bolt pulling mechanism 10 is located on the left side of the unlocking mechanism 9 and above the left end of the bolt 3 for pulling the bolt 3 upward from the lower locking buckle 2; the bolt rotating mechanism 11 is located on the right side of the unlocking mechanism 9 for rotating the bolt 3 outwards, so that the lock heads 5 at both ends of the connecting rod 4 are disengaged from the lock seats, and the control system 12 is used to control the operation of the entire opening device.

[0021] Preferably, a linear actuator 7.1 is provided on the fixed seat 7, a horizontally arranged guide rail 7.2 is provided on the right side of the linear actuator 7.1, a slide block 7.3 is provided on the guide rail 7.2, the left end of the slide block 7.3 is connected to the linear actuator 7.1, the outer side of the slide block 7.3 is connected to the connecting plate 8, and a positioning element 8.1 is provided at the right end of the connecting plate 8. By setting this structure, the positioning element 8.1 contacts the connecting rod 4 on the door for positioning, so as to adapt to door locks of different specifications.

[0022] The unlocking mechanism 9 includes a motor 9.1, with a suction cup 9.2 at the output end of the motor 9.1 for attracting the upper lock buckle 1. An electromagnet 9.3 is mounted on the suction cup 9.2. With this structure, when powered, magnetism is generated, causing the suction cup 9.2 to attract the upper lock buckle 1. The motor 9.1 then rotates, driving the upper lock buckle 1 to rotate, thereby opening the upper lock buckle 1.

[0023] The bolt pulling mechanism 10 includes a vertically arranged lifting hydraulic cylinder 10.1, with a hook 10.2 at its lower end for hooking the left end of the bolt 3. The hook 10.2 is L-shaped and includes a vertically arranged U-shaped hook handle 13. The lower end of the hook handle 13 is hingedly connected to a hook body 14 via a rotating shaft 15. The hook body 14 is provided with a resilient return element. Due to this structure, when the lifting hydraulic cylinder 10.1 moves downward, the hook body 14 of the folding hook 10.2 contacts the bolt 3 and folds toward the hook handle 13, allowing it to pass through the gap between the bolt 3 and the door leaf. After passing through the bolt 3, the hook body 14 returns to its original position under the action of the elastic force. When the lifting hydraulic cylinder 10.1 moves upward, the hook body 14 hooks the bolt 3, thereby pulling the bolt 3 out of the lower lock catch 2.

[0024] The bolt-turning mechanism 11 comprises a vertically arranged rotary hydraulic cylinder 11.1, with a toggle plate 11.2 disposed at its lower end. When the bolt 3 is pulled out of the lower lock catch 2, the rotary hydraulic cylinder 11.1 is activated, causing the toggle plate 11.2 to rotate through a preset angle. Because the toggle plate 11.2 is located inside the bolt 3, it rotates the bolt 3 outward, thereby opening the bolt 3.

[0025] The control system 12 is connected to the linear drive 7.1, the positioning element 8.1, the unlocking mechanism 9, the bolt pulling mechanism 10, and the bolt rotating mechanism 11; the opening device also includes a hydraulic system, which includes a pump station, a hydraulic valve, and an oil pipe, and is connected to the lifting hydraulic cylinder 10.1 and the rotating hydraulic cylinder 11.1.

[0026] A magnet for manually controlling the opening and closing of the magnetic circuit is provided on the fixing seat 7. This structure is provided to facilitate fast fixing of the entire opening device on the vehicle door.

[0027] The control system 12 includes a PLC controller and a remote control device. It adopts program control to achieve automatic control and remote safe operation.

[0028] When the present invention is in use: first, fix the assembled opening device to the left door of the van, then start the device, the linear drive 7.1 on the fixing seat 7 drives the slider 7.3 together with the connecting plate 8 to move to the right, when the positioning element 8.1 on the connecting plate 8 touches the connecting rod 4, the linear drive 7.1 stops, and at the same time, a feedback signal is given to the PLC controller to start the unlocking mechanism 9, the electromagnet 9.3 in the unlocking mechanism 9 is energized to generate magnetism, so that the suction cup 9.2 attracts the upper lock buckle 1, and then the motor 9.1 rotates, driving the upper lock buckle 1 to rotate and open, when it is fully opened, a feedback signal is given to the PLC controller to start the bolt pulling mechanism 10, and the lifting hydraulic cylinder 10.1 in the bolt pulling mechanism 10 moves downward, bringing The movable hook 10.2 passes through the gap between the bolt 3 and the door leaf. Once it has descended into position, the hook 14 of the hook 10.2 returns to its original position under the action of the spring, causing the lifting hydraulic cylinder 10.1 to move upward. The hook 14 of the hook 10.2 engages the bolt 3. Under the pulling force of the lifting hydraulic cylinder 10.1, the bolt 3 disengages from the lower lock catch 2. This then sends a feedback signal to the PLC controller, activating the bolt turning mechanism 11. The rotary hydraulic cylinder 11.1 within the bolt turning mechanism 11 begins to rotate according to a pre-set program, driving the toggle plate 11.2. Because the toggle plate 11.2 is located inside the bolt 3, it rotates the bolt 3 outward, thereby opening the bolt 3. The door leaf is then pushed open by the material. After the bolt 3 is opened, the various mechanisms return to their initial positions according to the pre-set program, allowing for further use.

[0029] The invention solves the problem that the door locks of vans are time-consuming, labor-intensive and unsafe to open. The invention has stable operation, fast response, large opening force and small impact, is safe and reliable to use, and can realize automation by adopting electro-hydraulic combined control.

[0030] With the above-mentioned ideal embodiment of the present invention as inspiration, through the above-mentioned description content, relevant personnel can make various changes and modifications without departing from the scope of the technical idea of this invention. The technical scope of this invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A safety opening device for a van door lock. The door lock is provided with an upper locking buckle, a lower locking buckle, a bolt, and a connecting rod. Lock heads are provided at the upper and lower ends of the connecting rod, and the lock heads are engaged with lock seats on the door frame. It is characterized in that: The opening device includes a fixed seat, a movable connecting plate is provided on the fixed seat, and an unlocking mechanism, a bolt pulling mechanism, a bolt rotating mechanism, and a control system are provided on the connecting plate; the unlocking mechanism is located in the middle of the connecting plate and above the upper lock buckle, and is used to open the upper lock buckle; the bolt pulling mechanism is located on the left side of the unlocking mechanism and above the left end of the door bolt, and is used to pull the door bolt upward out of the lower lock buckle; the bolt rotating mechanism is located on the right side of the unlocking mechanism, and is used to rotate the door bolt outward to disengage the lock heads at both ends of the connecting rod from the lock seat; the control system is used to control the operation of the entire opening device; A linear drive is provided on the fixed seat, a horizontally arranged guide rail is provided on the right side of the linear drive, a slider is provided on the guide rail, the left end of the slider is connected to the linear drive, the outer side of the slider is connected to the connecting plate, and a positioning element is provided on the right end of the connecting plate; The unlocking mechanism includes a motor, and an output end of the motor is provided with a suction cup, and the suction cup is used to absorb the upper locking buckle; The bolt pulling mechanism includes a vertically arranged lifting hydraulic cylinder, the lower end of which is provided with a hook for hooking the left end of the door bolt; The bolt rotating mechanism includes a vertically arranged rotary hydraulic cylinder, the lower end of which is provided with a toggle plate, which is located on the inner side of the bolt and is used to toggle the bolt to rotate outward; The control system is connected to the linear drive, the positioning element, the unlocking mechanism, the bolt pulling mechanism, and the bolt rotating mechanism; The opening device also includes a hydraulic system, which includes a pump station, a hydraulic valve, and an oil pipe, and is connected to the lifting hydraulic cylinder and the rotating hydraulic cylinder; The suction cup is provided with an electromagnet; The hook is L-shaped and comprises a vertically arranged U-shaped hook handle. The lower end of the hook handle is hinged to a hook body via a rotating shaft. A reset elastic element is provided on the hook body.

2. The safety opening device for the door lock of a van as described in claim 1, characterized in that: The fixing seat is provided with a magnet for manually controlling the opening and closing of the magnetic circuit.

3. The safety opening device for the door lock of a van as claimed in claim 1, wherein: The control system includes a PLC controller and a remote control device.

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