A docking device with emergency release function for a spreader

Abstract

The utility model discloses a kind of docking devices with emergency release function for lifting appliance, for with the docking of the object being lifted, including docking cylinder, the first cavity is provided in docking cylinder, driving device is provided in the first cavity, the driving device includes driving motor and locking rod, driving motor body is connected with docking cylinder, driving motor output shaft is connected with locking rod by sliding block, docking cylinder corresponding sliding block position is also provided with manual release device, the bottom of docking cylinder is provided with connector, through hole for locking rod to pass out is provided in the middle of connector, connector outside is provided with connecting block, the object being lifted is provided with the docking piece matched with connecting block and locking rod, convenient operation, docking effect is good.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically to a docking device for connecting a lifting equipment and a suspended object. Background Technology

[0002] When using a lifting device, a docking device is released to dock with the cargo. In existing docking devices, it is generally necessary to insert the docking device into the docking hole of the cargo. The docking device generally includes a docking joint and a docking body. The docking body is equipped with a motor, which completes the engagement between the docking joint and the object being lifted by rotating the docking joint.

[0003] The existing docking devices do not have emergency release devices, such as manual release devices. This means that in the event of a sudden situation such as motor failure, power outage, or control system failure, the operator cannot safely lower the cargo manually. This may cause the cargo to fall, resulting in personal injury or equipment damage.

[0004] For example, patent application number 202210994044.5, published on May 31, 2024, discloses an independent rotary lock device for container spreaders, relating to the field of cranes. It includes: a rotary lock outer body, a rotary lock inner body, a rotary lock component, a drive device, and a control system. The rotary lock outer body is equipped with a first detection device. The rotary lock inner body is located inside the rotary lock outer body. The rotary lock component includes a drive rod and a rotary lock pin, with the rotary lock pin located at one end of the drive rod. A rotation space is provided within the rotary lock outer body and the rotary lock inner body. The drive rod is located within the rotation space and can rotate within it. The rotary lock pin is used to cooperate with the container corner brackets to connect the rotary lock device to the container corner brackets. The control system controls the drive device based on feedback from the first detection device. The rotary lock devices are uniformly controlled via electrical signals, achieving separate control. Furthermore, no rigid connection is required between the various rotary lock devices, meeting existing container lifting requirements and demonstrating high practicality.

[0005] The above-mentioned documents rely solely on motor drive and do not include a manual release device. If the motor or control system malfunctions, such as power outage, motor damage, or control signal failure, the operator will be unable to manually intervene in the unlocking action of the rotary lock device, resulting in the container being unable to be released safely and increasing operational risks. Furthermore, the tension borne by the rotary lock pin needs to be transmitted sequentially through multiple transmission components, which not only increases the complexity of the entire structure. Summary of the Invention

[0006] This utility model provides a docking device for lifting equipment with an emergency release function, which can perform emergency release, is easy to operate, has a good docking effect, and has a simple structure.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: a docking device with an emergency release function for lifting equipment, used for docking with the object being lifted, including a docking cylinder, the docking cylinder having a first cavity, a driving device being installed in the first cavity, the driving device including a drive motor and a locking rod, the body of the drive motor being fixedly connected to the docking cylinder, the output shaft of the drive motor being connected to the locking rod via a slider, a manual release device being installed on the docking cylinder corresponding to the slider position, the manual release device driving the slider to move so that the locking rod disengages from the slider, a connector being installed at the bottom of the docking cylinder, a through hole being provided in the middle of the connector for the locking rod to pass through, a connecting block being provided on the outside of the connector, and a docking piece matching the connecting block and the locking rod being installed on the object being lifted.

[0008] The above setup includes a docking component on the suspended object that matches the connecting block and locking rod. First, the locking rod is inserted into the docking component, preventing it from rotating. The locking rod is connected to the output shaft of the drive motor via a slider, thus also preventing the drive motor's output shaft from rotating. With the locking rod inside the docking component, the connecting block also extends into it. At this point, the docking cylinder is not connected to the suspended object. The drive motor operates, but its output shaft is fixed in place, preventing rotation. However, the drive motor is fixedly connected to the docking cylinder, causing it to rotate. This rotation of the docking cylinder then rotates the connecting head, which in turn rotates the connecting block, completing the docking of the cylinder with the suspended object. If the motor malfunctions, a manual release device can be used to slide the groove, disengaging the locking rod and allowing the drive motor's output shaft to rotate, preventing the drive motor from rotating. This allows for emergency handling in case of malfunctions during docking. The operation is simple and reliable, and the structure is simple, eliminating the need for multiple rotating bearings or other transmission components.

[0009] Furthermore, a connecting plate is provided in the first cavity of the docking cylinder, and the body of the drive motor is fixedly connected to the connecting plate by fasteners.

[0010] In the above configuration, a connecting plate is provided in the first cavity. The connecting plate provides an installation position for the drive motor and is connected to the docking cylinder. When the output shaft of the drive motor is fixed, the drive motor starts and can drive the docking cylinder to rotate through the connecting plate.

[0011] Furthermore, the output shaft of the drive motor is provided with a key shaft, and the slider is provided with a first groove, which is slidably connected to the key shaft, and the length of the first groove is longer than the length of the key shaft.

[0012] In the above configuration, the output shaft of the drive motor is a keyed shaft, and the first groove is matched and connected to the keyed shaft. The keyed shaft structure achieves circumferential fixation of both the drive motor and the slider, ensuring that the power of the drive motor is stably transmitted to the slider. The length of the first groove is longer than that of the keyed shaft. When the drive motor is stationary, the slider can move vertically relative to the output shaft of the drive motor by means of the redundant length of the first groove. This does not affect the circumferential fixation provided by the keyed connection, and also meets the requirement that the slider needs to be independently adjusted in the vertical direction under specific working conditions. When the slider moves, the extra length of the first groove provides the slider with a position to move.

[0013] Furthermore, the slider and the locking rod are detachably connected, the top of the locking rod is provided with a locking connecting block, the locking connecting block is a square structure, and the bottom of the slider is provided with an assembly hole that matches the locking connecting block.

[0014] With the above configuration, when the locking connecting block is inserted into the assembly hole, since both the locking connecting block and the assembly hole are square structures, the side of the square locking connecting block will fit tightly against the inner wall of the assembly hole, directly transmitting the torque to the locking rod and achieving synchronous action between the two; while when the drive motor is not started, it can ensure that the slider and the locking rod remain relatively stationary and will not rotate unexpectedly due to external disturbances. Therefore, when the locking lever is fixed, the slider and the drive motor output shaft will form a rigid whole. In this state, if there is an external force or the drive motor outputs torque, since the drive motor output shaft and the slider are indirectly fixed by the locking lever and cannot rotate, according to the principle of action and reaction, the drive motor body will rotate relative to the fixed drive motor output shaft and the locking lever, thereby realizing the transmission action of the drive motor output shaft being fixed and the drive motor body rotating.

[0015] Furthermore, the connector is provided with a third cavity, and the locking block is provided with a locking protrusion. The locking protrusion is located in the third cavity and abuts against the connector.

[0016] With the above configuration, the locking protrusion abuts against the connector. Through the direct contact of the abutting surfaces, the weight of the locking block can be evenly transmitted to the connector without relying on other auxiliary load-bearing components.

[0017] Furthermore, a first locking block is provided at the position where the locking rod extends out of the through hole, and the docking component includes a docking locking frame. The top of the docking locking frame is provided with a docking locking hole and a first docking locking hole. An outwardly extending notch is provided on the docking locking hole. A docking connection groove communicating with the notch is provided on the inner side wall of the docking locking frame. A first locking protrusion is provided on the connecting block at the position of the notch.

[0018] In the above configuration, the first locking protrusion aligns with the notch and enters the mating part. Then, the first locking block connects with the first mating locking hole. The upper end of the locking rod is fixed to the first groove so that the locking rod will not rotate, thereby preventing the output shaft of the drive motor from rotating. Then, the drive motor runs, causing the drive motor body to rotate relative to the drive motor output shaft, which in turn drives the connecting block to rotate. By rotating the connecting block, the connecting block enters the mating connection groove position, thereby achieving mating with the mating locking frame.

[0019] Furthermore, the manual release device includes an unlocking connecting rod and an unlocking handle. The two sides of the slider are respectively connected to the unlocking connecting rod. The docking cylinder is provided with an arc-shaped groove corresponding to the unlocking connecting rod. A second groove matching the unlocking connecting rod is provided on one side of the arc-shaped groove. The unlocking connecting rod extends out of the arc-shaped groove and connects to the unlocking handle. An elastic element is provided between the unlocking connecting rod and the unlocking handle.

[0020] In the above configuration, when the connecting block is not in contact with the docking plate, the unlocking connecting rod is located on the other side of the arc groove relative to the second groove. When the connecting block rotates and abuts against the docking plate, the unlocking connecting rod is located on the side of the arc groove relative to the second groove. If the drive motor loses power and cannot drive, the unlocking handle can be used to move the unlocking connecting rod upward. The unlocking connecting rod moves from the arc groove to the second groove. The upward movement of the unlocking connecting rod causes the slider to move upward, disengaging the slider from the locking connecting block. The output shaft of the drive motor is unlocked. Then, the unlocking connecting rod abuts against the docking cylinder. Rotating the unlocking connecting rod causes the docking cylinder to rotate, which in turn causes the connecting block to rotate from the docking plate to the docking groove position. This allows the connecting block to move upward from the docking groove position without obstruction, thus disengaging the connecting block from the docking part. An elastic element, such as a coil spring, is installed between the unlocking connecting rod and the unlocking handle. The purpose of the coil spring is to ensure that when the unlocking handle is not needed, the spring force can keep the unlocking handle in the appropriate position and prevent it from swinging in the wind.

[0021] Furthermore, the upper end of the docking cylinder is provided with a bearing seat, the bearing seat is provided with a second through hole, the docking cylinder is provided with a connecting shaft, the connecting shaft passes through the second through hole and is connected to a fastener, and the upper end of the bearing seat is also provided with pin holes on both sides.

[0022] The above configuration includes a connecting shaft on the docking cylinder body. The connecting shaft passes through the second through hole and is connected to a fastener such as a nut to complete the connection between the docking cylinder body and the bearing seat. The upper end of the bearing seat is also provided with pin holes on both sides, so that the bearing seat can be placed on the pin seat of the connecting device. The connection between the bearing seat and the connecting device is completed by passing a pin through the pin seat and the pin hole. Attached Figure Description

[0023] Figure 1 A cross-sectional view of this utility model Figure 1 .

[0024] Figure 2 A cross-sectional view of this utility model Figure 2 .

[0025] Figure 3 for Figure 2 Enlarged view of section B in the middle.

[0026] Figure 4 This is a partial exploded view of the docking cylinder body in this utility model.

[0027] Figure 5 This is a schematic diagram of the structure of the connecting parts in this utility model.

[0028] Figure 6 for Figure 3 Cross-sectional view of the middle CC section.

[0029] Reference numerals: 1-Dating cylinder; 11-First cavity; 12-Connecting shaft; 13-Connecting head; 131-Connecting block; 14-Connecting plate; 15-Arc groove; 151-Second groove; 2-Drive motor; 21-Drive motor output shaft; 3-Bearing seat; 31-Fastener; 32-Pin hole; 33-Second through hole; 4-Pin seat; 5-Pin shaft; 6-Slider; 61-First groove; 611-Key shaft; 62-Assembly hole; 7-Locking rod; 71-Locking connecting block; 72-Locking block; 8-Dating part; 81-Dating connecting frame; 82-Dating connecting groove; 83-Dating locking hole; 831-Notch; 9-Unlocking connecting rod; 91-Unlocking handle. Detailed Implementation

[0030] like Figure 1-6 As shown, a docking device for connecting a lifting device and a suspended object is provided. The device includes a docking cylinder 1 with a first cavity 11 containing a driving device. The driving device includes a drive motor 2 and a locking rod 7. The drive motor 2 is connected to the docking cylinder 1, and its output shaft 21 is connected to the locking rod 7 via a slider 6. A manual release device is provided on the docking cylinder 1 corresponding to the slider 6. A connector 13 is provided at the bottom of the docking cylinder 1, with a through hole in the middle for the locking rod 7 to pass through. A connecting block 131 is provided on the outer side of the connector 13. A docking piece 8 matching the connecting block 131 and the locking rod 7 is provided on the suspended object.

[0031] like Figure 1-4As shown, a connecting plate 14 is provided in the first cavity 11 of the docking cylinder 1. The drive motor 2 body is connected to the connecting plate 14 through fasteners 31. The connecting plate 14 is provided in the first cavity 11. The connection plate 14 can provide an installation position for the drive motor 2. The connecting plate 14 is connected to the docking cylinder 1. When the output shaft 21 of the drive motor is fixed, the drive motor 2 starts. The drive motor 2 can drive the docking cylinder 1 to rotate through the connecting plate 14.

[0032] A key shaft 611 is provided on the output shaft 21 of the drive motor. The key shaft 611 can be fixedly connected to the output shaft 21 of the drive motor by welding or screws. The slider 6 is provided with a first groove 61. The first groove 61 and the key shaft are slidably connected along the height direction of the first groove. The first groove 61 is provided with a sliding groove 62 that matches the key shaft. The sliding groove 62 is matched with the key shaft to prevent the key shaft from rotating. The length of the first groove 61 is longer than that of the key shaft, so that a sliding space for the key shaft is formed on the first groove. The output shaft 21 of the drive motor is connected to the first groove via the key shaft. The grooves are connected, and the circumferential fixation of the drive motor 2 and the slider 6 is achieved by means of the flat key shaft structure, which ensures that the power of the drive motor 2 is stably transmitted to the slider 6. The length of the first groove is longer than that of the flat key shaft. When the drive motor 2 is stationary, the slider 6 can move vertically relative to the output shaft 21 of the drive motor by means of the redundant length of the first groove. This does not affect the circumferential fixation brought by the flat key connection, and also meets the requirement that the slider 6 needs to be independently adjusted in the vertical direction under specific working conditions. When the slider 6 moves, the first groove 61 provides the slider 6 with the moving position.

[0033] The slider 6 and the locking rod 7 are detachably connected. The top of the locking rod 7 is provided with a locking connecting block 71, which has a square structure. The bottom of the slider 6 is provided with an assembly hole 62 that matches the locking connecting block 71. When the locking connecting block 71 is inserted into the assembly hole 62, since both the locking connecting block 71 and the assembly hole 62 have square cross-sections, the side of the square-cross-section locking connecting block 71 will fit tightly against the inner wall of the assembly hole 62, directly transmitting torque to the locking rod 7 to achieve synchronous action between the two. When the drive motor 2 is not started, it can also ensure that the slider 6 and the locking rod 7 remain relatively stationary and will not rotate unexpectedly due to external disturbances. Therefore, when the locking rod 7 is fixed, the slider 6 and the drive motor output shaft 21 will form a rigid whole. In this state, if there is an external force or the drive motor 2 outputs torque, since the drive motor output shaft 21 and the slider 6 are indirectly fixed by the locking rod 7 and cannot rotate, according to the principle of action and reaction, the body of the drive motor 2 will rotate relative to the fixed drive motor output shaft 21 and the locking rod 7, thereby realizing the transmission action of the drive motor output shaft 21 being fixed and the drive motor 2 body rotating.

[0034] like Figure 3 As shown, the upper end of the connector 13 is provided with a third cavity, and the locking rod 7 is provided with a locking block 72. The locking block 72 is provided with a locking protrusion that protrudes outward. The locking protrusion is located in the third cavity and abuts against the connector 13. Through the direct contact between the locking protrusion and the connector 13, the weight of the locking block 72 can be evenly transmitted to the connector 13 through the locking protrusion without relying on other auxiliary load-bearing components.

[0035] like Figure 5 As shown, a first locking block 73 is provided at the position where the locking rod 7 extends out of the through hole. The first locking block 73 is used to abut against the top of the goods to be docked. The docking part 8 is fixed to the top of the goods to be lifted. The docking part 8 includes a docking locking frame 81. The top of the docking locking frame is provided with a docking locking hole 83 and a first docking locking hole 84. The docking locking hole 83 is provided with an outwardly extending notch 831. The inner side wall of the docking locking frame 81 is provided with a docking connecting groove 82 that communicates with the notch 831. The connecting block 131 is provided with a first locking protrusion 1311 at the position of the notch 831. After the fixed protrusion 1311 aligns with the notch 831, it enters the docking part 81. Then, the first locking block 73 is connected to the first docking locking hole 84. The upper end of the locking rod 7 is fixed to the first groove 61 so that the locking rod 7 will not rotate, thereby preventing the output shaft 21 of the drive motor from rotating. Then, the drive motor 2 runs, causing the body of the drive motor 2 to rotate relative to the output shaft 21 of the drive motor, thereby driving the connecting block 131 to rotate. By rotating the connecting block 131, the connecting block 131 enters the docking connection groove 82 position, thereby achieving docking with the docking locking frame 81.

[0036] like Figures 3-6As shown, the manual release device includes an unlocking connecting rod 9 and an unlocking handle 91. The slider 6 is connected to the unlocking connecting rod 9 on both sides. The docking cylinder 1 has an arc-shaped groove 15 corresponding to the unlocking connecting rod 9. A second groove 151 matching the unlocking connecting rod 9 is provided on one side of the arc-shaped groove 15. The unlocking connecting rod 9 extends out of the arc-shaped groove 15 and connects to the unlocking handle 91. An elastic element is provided between the unlocking connecting rod 9 and the unlocking handle 91. Initially, when the connecting block 131 is not in contact with the docking connecting plate 81, the unlocking connecting rod 9 is located on the other side of the arc-shaped groove 15 relative to the second groove 151. When the connecting block 131 rotates and abuts against the docking connecting plate 81, the unlocking connecting rod 9 is located on one side of the arc-shaped groove 15 relative to the second groove 151. On the other hand, if the drive motor 2 loses power and cannot drive, the unlocking handle 91 can be used to move the unlocking connecting rod 9 upward. The unlocking connecting rod 9 moves from the arc groove 15 to the second groove 151. The upward movement of the unlocking connecting rod 9 causes the slider 6 to move upward. The slider 6 disengages from the locking connecting block 71, and the drive motor output shaft 21 is unlocked. Then, the unlocking connecting rod 9 abuts against the docking cylinder 1. Then, the unlocking connecting rod 9 is rotated, which drives the docking cylinder 1 to rotate the connecting block 131. This causes the connecting block 131 to rotate from the docking connecting plate 81 to the notch 831 position, so that the connecting block 131 can move upward from the docking connecting groove 82 position without obstruction, allowing the connecting block 131 to disengage from the docking part 8. An elastic element, such as a coil spring, is provided between the unlocking connecting rod 9 and the unlocking handle 91. The purpose of the coil spring is to ensure that when the unlocking handle 91 is not needed, the spring force of the coil spring can keep the unlocking handle 91 in the corresponding position and prevent it from swinging in the wind.

[0037] The upper end of the docking cylinder 1 is provided with a bearing seat 3, and the bearing seat 3 is provided with a second through hole 33. The docking cylinder 1 is provided with a connecting shaft 12, which passes through the second through hole 33 and is connected to the fastener 31. The upper end of the bearing seat 3 is also provided with pin holes 32 on both sides. The docking cylinder 1 is provided with a connecting shaft 12, which passes through the second through hole 33 and is connected to the fastener 31 such as a nut, thus completing the connection between the docking cylinder 1 and the bearing seat 3. The upper end of the bearing seat 3 is also provided with pin holes 32 on both sides, so that the bearing seat 3 can be placed on the pin seat 4 of the connecting device. The pin 5 passes between the pin seat 4 and the pin hole 32 to complete the connection between the bearing seat 3 and the connecting device.

[0038] The working principle of this utility model is as follows: A docking part 8 matching the connecting block 131 and the locking rod 7 is provided on the suspended object. First, the locking rod 7 is inserted into the docking part 8, so that the locking rod 7 will not rotate. The locking rod 7 is connected to the output shaft 21 of the drive motor through the slider 6, so the output shaft 21 of the drive motor will not rotate. When the locking rod 7 is inserted into the docking part 8, the connecting block 131 will also be inserted into the docking part 8. At this time, the docking cylinder 1 is not connected to the suspended object. The docking part 8 is provided with space for the connecting block 131 to rotate. When the drive motor 2 is turned, the output shaft 21 of the drive motor will not rotate. Therefore, the drive motor 2 will drive the docking cylinder 1 to rotate. The rotation of the docking cylinder 1 will drive the connecting head 13 to rotate. The connecting head 13 will drive the connecting block 131 to rotate. At this time, the docking of the docking cylinder 1 and the suspended object is completed. The rotation of connecting block 131 completes the docking of docking cylinder 1 with the suspended object. If the drive motor 2 loses power and cannot drive, the unlocking handle 91 can be used to move the unlocking connecting rod 9 upward. The unlocking connecting rod 9 moves from the arc groove 15 to the second groove 151. The upward movement of the unlocking connecting rod 9 causes the slider 6 to move upward. The slider 6 disengages from the locking connecting block 71, and the drive motor output shaft 21 is unlocked. Then, the unlocking connecting rod 9 abuts against the docking cylinder 1. Then, the unlocking connecting rod 9 is rotated to drive the docking cylinder 1 to rotate. The rotation of the docking cylinder 1 causes the connecting block 131 to rotate, so that the connecting block 131a rotates from the docking connecting frame 81 to the notch 831 position. This allows the connecting block 131 to move upward from the docking connecting groove 82 position without obstruction, so that the connecting block 131 disengages from the docking part 8.

Claims

1. A docking device for lifting equipment with an emergency release function, used for docking with a lifted object, comprising a docking cylinder, the docking cylinder having a first cavity, and a driving device disposed within the first cavity, characterized in that: The driving device includes a drive motor and a locking rod. The body of the drive motor is fixedly connected to the docking cylinder. The output shaft of the drive motor is connected to the locking rod through a slider. The docking cylinder is provided with a manual release device at the corresponding position of the slider. The manual release device drives the slider to move so that the locking rod is disengaged from the slider. The bottom of the docking cylinder is provided with a connector. The middle of the connector is provided with a through hole for the locking rod to pass through. The outside of the connector is provided with a connecting block. The suspended object is provided with a docking part that matches the connecting block and the locking rod.

2. The docking device with emergency release function for a lifting sling according to claim 1, characterized in that: A connecting plate is provided in the first cavity of the docking cylinder, and the drive motor body is fixedly connected to the connecting plate by fasteners.

3. A docking device with emergency release function for a lifting sling according to claim 1, characterized in that: The output shaft of the drive motor is provided with a key shaft, and the slider is provided with a first groove. The first groove is slidably connected to the key shaft, and the length of the first groove is longer than the length of the key shaft.

4. A docking device with emergency release function for a lifting sling according to claim 1, characterized in that: The slider and the locking rod are detachably connected. The top of the locking rod is provided with a locking connecting block, which is a square structure. The bottom of the slider is provided with an assembly hole that matches the locking connecting block.

5. A docking device with emergency release function for a lifting sling according to claim 1, characterized in that: The connector has a third cavity, and a locking block is provided at the position where the locking rod extends out of the through hole. The locking block has a locking protrusion, which is located in the third cavity and abuts against the connector.

6. A docking device with emergency release function for a lifting sling according to claim 1, characterized in that: The docking component includes a docking locking frame, a docking locking hole and a first docking locking hole are provided on the top of the docking locking frame, an outwardly extending notch is provided on the docking locking hole, a docking connection groove communicating with the notch is provided on the inner side wall of the docking locking frame, and a first locking protrusion is provided on the connecting block at the position of the notch.

7. A docking device with emergency release function for a lifting sling according to claim 1, characterized in that: The manual release device includes an unlocking connecting rod and an unlocking handle. The two sides of the slider are respectively connected to the unlocking connecting rod. The docking cylinder is provided with an arc-shaped groove corresponding to the unlocking connecting rod. A second groove matching the unlocking connecting rod is provided on one side of the arc-shaped groove. The unlocking connecting rod extends out of the arc-shaped groove and connects to the unlocking handle. An elastic element is provided between the unlocking connecting rod and the unlocking handle.

8. A docking device with emergency release function for a lifting sling according to claim 1, characterized in that: The upper end of the docking cylinder is provided with a bearing seat, the bearing seat is provided with a second through hole, the docking cylinder is provided with a connecting shaft, the connecting shaft passes through the second through hole and is connected to a fastener, and the upper end of the bearing seat is also provided with pin holes on both sides.

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