An automatic uncoupler

Abstract

The application discloses an automatic unhooking device, relates to the technical field of hooks, and comprises an outer supporting arm, a circular ring hanging part is arranged at the top of the outer supporting arm, a steel wire rope hung on a cargo unloading device penetrates through the circular ring hanging part, a crank arm is hingedly connected to the inner side of the outer supporting arm, a hook part is fixedly connected to the bottom of the crank arm, and limit stop rods are arranged on the outer wall of the end of the crank arm away from the hook part. The application uses the steel wire rope and the automatic unhooking device to unload the cargo, the hook can automatically fall off when the ton bag is put down, the forklift driver does not need to get off the forklift to take the rope, the original unloading rope that needs to be abraded every month is saved, the hook part can be kept in a vertical state by relying on the gravity of the cargo after the cargo is lifted, the cargo is put on the ground after reaching the destination, the pulling force generated by the gravity of the cargo disappears, the hook part can be rotated and pulled apart through the first spring reset, the hook part can tend to be in a horizontal state at this time, automatic unhooking is realized, and the automatic unhooking can be realized without external force once the cargo falls to the ground.

Description

Technical Field

[0001] This application relates to the field of hook technology, and in particular to an automatic unhooking device. Background Technology

[0002] Forklifts, as industrial material handling vehicles, are widely used in ports, railway stations, airports, freight yards, factory workshops, warehouses, distribution centers, and other locations for loading, unloading, and handling palletized goods in ship holds, truck beds, and containers. They are indispensable equipment in pallet and container transportation. Forklifts play a crucial role in enterprise logistics systems and are the mainstay of material handling equipment. They are widely used in various sectors of the national economy, including railway stations, ports, airports, factories, and warehouses. However, forklifts present the following problems during the loading and unloading of raw materials:

[0003] 1. Raw materials are unloaded by threading a braided rope onto the unloading device. After the raw materials are stacked on the pallet, the rope cannot fall off automatically. The forklift driver needs to get off the vehicle to retrieve the rope, which increases the unloading time. The forklift driver has to get off to retrieve the rope after unloading each bag. The forklift driver cannot exit the unloading device while unloading raw materials, and the rope cannot fall off automatically.

[0004] 2. In some cases, external force is still required to open the hook release device, or the release is incomplete and cannot truly achieve automatic release;

[0005] 3. When transporting raw material ton bags and unloading goods using hooks, the hanging rope cannot be limited or locked, as it is easy for the rope to rub and slip on the hook and fall off, posing a certain safety hazard. Summary of the Invention

[0006] To address the aforementioned problem of the rope not automatically detaching during raw material unloading, requiring the forklift driver to dismount and retrieve it, this invention provides an automatic unhooking device.

[0007] This invention provides an automatic unhooking device, which adopts the following technical solution: An automatic unhooking device includes an outer support arm, a circular lifting part is provided at the top of the outer support arm, a steel wire rope that is hung on the unloading device passes through the circular lifting part, a crank arm is hinged to the inner side of the outer support arm, a hook part is fixedly connected to the bottom of the crank arm, and limit stops are provided on both sides of the outer wall of the end of the crank arm away from the hook part.

[0008] Based on the above technical features: This application uses steel wire rope and automatic unhooking device for unloading. When the ton bag is put down, the unhooking device can automatically detach, and the forklift driver does not need to get off the vehicle to retrieve the rope, which also saves the original unloading rope that needs to be worn out every month.

[0009] As a preferred embodiment of the automatic unhooking device of the present invention, the outer support arm has a hollow groove inside for the crank arm to move, and the hollow groove has a concave structure.

[0010] Based on the above technical features: the hollow slot allows the crank arm to rotate around the hinge point.

[0011] As a preferred embodiment of the automatic unhooking device of the present invention, the hook portion has connecting rods hinged to both sides of its outer wall, and sliding grooves are provided on both sides of the outer support arm. A sliding plate is hinged to the end of the connecting rod away from the hook portion. The sliding plate is slidably engaged with the sliding groove, and a piston slider is provided at the bottom of the sliding plate. The piston slider is located in the sliding groove.

[0012] Based on the above technical features: after the goods are lifted, the hook can be rotated and kept vertical by the weight of the goods themselves, and the limit stop is used for limiting. At this time, the connecting rod can drive the slide plate to move upward in the slide groove.

[0013] In a preferred embodiment of the automatic unhooking device of the present invention, a positioning block is fixedly provided on one side of the inner wall of the slide groove, and a first spring is provided at the end of the positioning block, with one end of the first spring being fixedly connected to the piston slider.

[0014] Based on the above technical features: when the slide plate moves upward in the slide groove, the piston slider can continuously squeeze the first spring and compress the first spring. After reaching the destination, the goods are placed on the ground. The pulling force generated by the weight of the goods disappears, the first spring can be reset, and the piston slider and slide plate are driven to slide downward. The connecting rod drives the hook to rotate clockwise and tend to a horizontal state, and the hanging rope can be automatically unhooked.

[0015] As a preferred embodiment of the automatic unhooking device of the present invention, wherein: a self-locking assembly is detachably installed at one end of the outer support arm near the hook by bolts, the self-locking assembly including a positioning clamp plate snapped onto the outside of the outer support arm and a locking block detachably disposed on the inside of the positioning clamp plate.

[0016] Based on the above technical features, the self-locking assembly can close the opening of the hook part through the locking block after installation.

[0017] In a preferred embodiment of the automatic unhooking device of the present invention, the locking block has an arc-shaped groove at its end that is adapted to the hook end of the hook part, and the arc-shaped groove engages with the hook end of the hook part.

[0018] Based on the above technical features: when the hook part is rotated to a vertical state, it can be used with the arc-shaped groove to close the opening of the hook part and achieve a self-locking state. When transporting raw material ton bags and unloading through the hook part, it can limit and lock the hanging rope on the hook part, so as to avoid the hanging rope from rubbing and slipping on the hook part and falling off, thereby improving the safety factor.

[0019] In a preferred embodiment of the automatic unhooking device of the present invention, through-hole grooves are provided on both sides of the outer wall of the positioning clamp, a second spring is fixedly provided in the inner cavity of the through-hole groove, and a top rod is fixedly connected to the bottom end of the second spring, the top rod being in contact with the locking block.

[0020] Based on the above technical features: after the locking block is inserted into the positioning clamping plate, the locking block can push the push rod backward and compress the second spring. When it is necessary to remove the locking block inserted into the positioning clamping plate, the spring force generated when the second spring is reset can drive the push rod to pop the locking block out of the positioning clamping plate, which facilitates the partial replacement of the worn locking block without replacing the entire self-locking structure.

[0021] In a preferred embodiment of the automatic unhooking device of the present invention, both ends of the top rod pass through the through-hole groove and are fixedly connected to a chuck, wherein the chuck slides and engages with the through-hole groove.

[0022] Based on the above technical features: the push rod can be fixed in the positioning clamp by a chuck and can slide.

[0023] As a preferred embodiment of the automatic unhooking device of the present invention, wherein: arc-shaped elastic locking blocks are provided on both sides of the outer wall of the locking block, and positioning holes for the arc-shaped elastic locking blocks to be inserted are provided on both sides of the outer wall of the positioning clamping plate, the arc-shaped elastic locking blocks and the positioning holes are engaged through and locked together, and the arc-shaped elastic locking blocks are press-type.

[0024] Based on the above technical features: after the locking block is inserted into the positioning clamp, the locking block can push the push rod backward and continuously compress the second spring. At the same time, the arc-shaped elastic locking block will also move backward until the arc-shaped elastic locking block reaches the positioning hole position. Then, the arc-shaped elastic locking block will pop out from the positioning hole and limit the position of the locking block. When it is necessary to remove the locking block, simply move the arc-shaped elastic locking block downward to release the locking state.

[0025] In summary, the present invention has at least one of the following beneficial effects:

[0026] 1. This application uses steel wire rope and automatic unhooking device for unloading. When the ton bag is placed down, the unhooking device can automatically detach, and the forklift driver does not need to get off the vehicle to retrieve the rope. It also saves the original unloading rope that needs to be worn out every month. After the goods are lifted, the hook can be kept vertical by the weight of the goods themselves and is limited by the limit bar. After reaching the destination, the goods are placed on the ground. The tension generated by the weight of the goods disappears, and the hook can be rotated and pulled open by the first spring. At this time, the hook can tend to be horizontal, realizing automatic unhooking. Once the goods land, automatic unhooking can be achieved without the need for external force.

[0027] 2. When the hook part is rotated to the vertical position, it can be used with the arc-shaped groove to close the opening of the hook part and achieve a self-locking state. When transporting raw material ton bags and unloading through the hook part, it can limit and lock the hanging rope on the hook part, and try to avoid the hanging rope from rubbing and sliding on the hook part and falling off, thus improving the safety factor.

[0028] 3. After the locking block is inserted into the positioning clamp, the locking block can push the push rod backward and compress the second spring. When it is necessary to remove the locking block inserted into the positioning clamp, the spring force generated when the second spring is reset can drive the push rod to pop the locking block out of the positioning clamp, which is convenient for partial replacement of the worn locking block without replacing the entire self-locking structure. Attached Figure Description

[0029] Figure 1 This is an overall structural diagram of the present invention;

[0030] Figure 2 This is a schematic diagram of the hook part of the present invention in the closed state before disengagement;

[0031] Figure 3 This is a schematic diagram of the hook part of the present invention in the disengaged and opened state;

[0032] Figure 4 This is a schematic diagram of the left side of the hook and connecting rod installation of the present invention;

[0033] Figure 5 This is a schematic diagram of the specific structure of the self-locking component of the present invention;

[0034] Figure 6 This is the invention Figure 4 Enlarged view of point A in the middle.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Outer boom; 2. Circular lifting section; 3. Wire rope; 4. Crank arm; 5. Hook section; 6. Limit stop bar; 7. Connecting rod; 8. Slide groove; 9. Slide plate; 10. Piston slider; 11. Positioning block; 12. First spring; 13. Hollow groove; 14. Self-locking assembly; 141. Positioning clamp; 142. Locking block; 143. Arc-shaped groove; 144. Through hole groove; 145. Second spring; 146. Top rod; 147. Chuck; 148. Positioning hole; 149. Arc-shaped elastic locking block. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0038] Please see Figure 1-3An embodiment of the present invention provides an automatic unhooking device, comprising an outer arm 1, a circular lifting part 2 at the top of the outer arm 1, a steel wire rope 3 that is hung on the unloading device passing through the circular lifting part 2, a crank arm 4 hinged to the inner side of the outer arm 1, a hook part 5 fixedly connected to the bottom of the crank arm 4, a hollow groove 13 for the crank arm 4 to move in the interior of the outer arm 1, the hollow groove 13 adopts a concave structure, the hollow groove 13 allows the crank arm 4 to rotate around the hinge point, and limit stops 6 are provided on both sides of the outer wall of the end of the crank arm 4 away from the hook part 5. The unloading is carried out by using the steel wire rope 3 and the automatic unhooking device. When the ton bag is placed down, the unhooking device can automatically detach, and the forklift driver does not need to get off the vehicle to retrieve the rope, which also saves the original unloading rope that needs to be worn every month.

[0039] Please see Figure 4 and Figure 6 Both sides of the outer wall of the hook part 5 are hinged with connecting rods 7. Both sides of the outer support arm 1 are provided with sliding grooves 8. The end of the connecting rod 7 away from the hook part 5 is hinged with a sliding plate 9. The sliding plate 9 and the sliding groove 8 are slidably engaged. The bottom of the sliding plate 9 is provided with a piston slider 10. The piston slider 10 is located in the sliding groove 8. After the goods are lifted, the hook part 5 can be rotated and kept vertical by the weight of the goods themselves. The limit stop bar 6 is used to limit the movement. At this time, the connecting rod 7 can drive the sliding plate 9 to move upward in the sliding groove 8.

[0040] A positioning block 11 is fixedly provided on one side of the inner wall of the slide 8. A first spring 12 is provided at the end of the positioning block 11. One end of the first spring 12 is fixedly connected to the piston slider 10. The first spring 12 can be reset and drive the piston slider 10 and the slide plate 9 to slide downward. The connecting rod 7 drives the hook part 5 to rotate clockwise and tend to be horizontal, so that the hanging rope can be automatically unhooked.

[0041] Please see Figure 1 and Figure 5 The outer support arm 1 is detachably mounted with a self-locking assembly 14 near the hook part 5 by bolts. The self-locking assembly 14 includes a positioning clamp 141 that is snapped onto the outside of the outer support arm 1 and a locking block 142 that is detachably disposed on the inside of the positioning clamp 141. After installation, the self-locking assembly 14 can close the opening of the hook part 5 through the locking block 142.

[0042] The locking block 142 has an arc-shaped groove 143 at its end that matches the hook end of the hook part 5. The arc-shaped groove 143 engages with the hook end of the hook part 5. When the hook part 5 rotates to a vertical position, it can close the opening of the hook part 5 with the arc-shaped groove 143 to achieve a self-locking state. When transporting raw material ton bags and unloading through the hook part 5, it can limit and lock the hanging rope on the hook part 5, and try to avoid the hanging rope from rubbing and sliding on the hook part 5 and falling off, thereby improving the safety factor.

[0043] Both sides of the outer wall of the positioning clamp 141 are provided with through-hole slots 144. A second spring 145 is fixedly installed in the inner cavity of the through-hole slot 144. A push rod 146 is fixedly connected to the bottom end of the second spring 145. The push rod 146 is in contact with the locking block 142. After the locking block 142 is inserted into the positioning clamp 141, the locking block 142 can push the push rod 146 backward and compress the second spring 145. When it is necessary to remove the locking block 142 inserted into the positioning clamp 141... Alternatively, the spring force generated when the second spring 145 is reset can drive the push rod 146 to pop the locking block 142 outward from the positioning clamp 141, which facilitates the partial replacement of the worn locking block 142 without replacing the entire self-locking structure. Both ends of the push rod 146 pass through the through hole groove 144 and are fixedly connected to the chuck 147. The chuck 147 slides and engages with the through hole groove 144. The push rod 146 can be fixed in the positioning clamp 141 by the chuck 147 and can slide.

[0044] Both sides of the outer wall of the locking block 142 are provided with arc-shaped elastic locking blocks 149, and both sides of the outer wall of the positioning clamp 141 are provided with positioning holes 148 for the arc-shaped elastic locking blocks 149 to be inserted. The arc-shaped elastic locking blocks 149 and the positioning holes 148 are engaged through and locked together. The arc-shaped elastic locking blocks 149 are press-type. After the locking block 142 is inserted into the positioning clamp 141, the locking block 142 can push the push rod 146 backward and continuously compress the second spring 145. At the same time, the arc-shaped elastic locking blocks 149 will also move backward until the arc-shaped elastic locking blocks 149 reach the position of the positioning holes 148. Then, the arc-shaped elastic locking blocks 149 will pop out from the positioning holes 148 and limit the position of the locking block 142. When it is necessary to remove the locking block 142, simply lower the arc-shaped elastic locking blocks 149 to release the locking state.

[0045] Working principle: After the goods are lifted, the hook part 5 can rotate and remain vertical by the weight of the goods themselves. The limit stop bar 6 is used for limiting. At this time, the connecting rod 7 can drive the slide plate 9 to move upward in the slide groove 8. When the slide plate 9 moves upward in the slide groove 8, the piston slider 10 can continuously squeeze the first spring 12 and compress the first spring 12. After reaching the destination, the goods are put on the ground. The tension generated by the weight of the goods disappears, the first spring 12 can be reset, and drive the piston slider 10 and the slide plate 9 to slide downward. The connecting rod 7 drives the hook part 5 to rotate clockwise and tend to be horizontal. The rope can be automatically unhooked.

[0046] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic unhooking device, comprising an outer support arm (1), characterized in that: The top of the outer support arm (1) is provided with a circular lifting part (2), and a steel wire rope (3) that is hung on the unloading device passes through the circular lifting part (2). A crank arm (4) is hinged to the inner side of the outer support arm (1). A hook part (5) is fixedly connected to the bottom of the crank arm (4). Limiting stops (6) are provided on both sides of the outer wall of the crank arm (4) away from the hook part (5). Connecting rods (7) are hinged to both sides of the outer wall of the hook part (5). Openings are provided on both sides of the outer support arm (1). There is a sliding groove (8), and a sliding plate (9) is hinged to one end of the connecting rod (7) away from the hook part (5). The sliding plate (9) is slidably engaged with the sliding groove (8), and a piston slider (10) is provided at the bottom of the sliding plate (9). The piston slider (10) is located in the sliding groove (8). A positioning block (11) is fixedly provided on one side of the inner wall of the sliding groove (8). A first spring (12) is provided at the end of the positioning block (11). One end of the first spring (12) is fixedly connected to the piston slider (10).

2. The automatic unhooking device as described in claim 1, characterized in that: The outer support arm (1) has a hollow groove (13) inside for the crank arm (4) to move. The hollow groove (13) has a concave structure.

3. The automatic unhooking device as described in claim 1, characterized in that: The outer arm (1) is detachably mounted with a self-locking assembly (14) near the hook part (5) by bolts. The self-locking assembly (14) includes a positioning clamp (141) snapped onto the outside of the outer arm (1) and a locking block (142) detachably disposed on the inside of the positioning clamp (141).

4. An automatic unhooking device as described in claim 3, characterized in that: The locking block (142) has an arc-shaped groove (143) at its end that is adapted to the hook end of the hook part (5), and the arc-shaped groove (143) engages with the hook end of the hook part (5).

5. An automatic unhooking device as described in claim 3, characterized in that: The positioning clamp (141) has through holes (144) on both sides of its outer wall. A second spring (145) is fixed in the inner cavity of the through hole (144). A top rod (146) is fixedly connected to the bottom end of the second spring (145). The top rod (146) is in contact with the locking block (142).

6. An automatic unhooking device as described in claim 5, characterized in that: Both ends of the top rod (146) pass through the through hole groove (144) and are fixedly connected to a chuck (147), which slides and engages with the through hole groove (144).

7. An automatic unhooking device as described in claim 3, characterized in that: Both sides of the outer wall of the locking block (142) are provided with arc-shaped elastic locking blocks (149), and both sides of the outer wall of the positioning clamp (141) are provided with positioning holes (148) for the arc-shaped elastic locking blocks (149) to be inserted. The arc-shaped elastic locking blocks (149) and the positioning holes (148) are connected through and engaged, and the arc-shaped elastic locking blocks (149) are press-type.

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