Bag collecting lifting appliance with automatic unhooking function and operation method

Abstract

The invention discloses a bag collecting lifting appliance with an automatic unhooking function and an operation method, the lifting appliance comprises a horizontally arranged lifting beam, a plurality of lifting hooks are arranged on two sides of the bottom of the lifting beam at equal intervals along the length direction of the lifting beam, and an unhooking mechanism is arranged on the inner wall of the lifting beam above each lifting hook; the lifting hook comprises a hook body and a stop lever, the hook body is rotationally arranged, and the stop lever seals the opening side of the hook body; the unhooking mechanism comprises an unhooking air cylinder, and a first transmission rod, a second transmission rod, a reset spring and a third transmission rod are sequentially matched with one another, so that the lifting hook has two modes of manual opening and automatic opening; according to the automatic unhooking operation method achieved through the bag collecting lifting appliance, when bagged goods are transported, the lifting capacity of lifting equipment can be effectively utilized, follow-up lifting operation and unloading operation except for connection of the goods and the lifting appliance can be controlled by an operation driver of the lifting equipment, the whole unloading operation does not need cooperation of workers, the operation efficiency is improved, and the labor intensity of workers is reduced. And the operation risk is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of cargo lifting tools, and particularly to a bulk bag lifting tool with an automatic hook-unhooking function and an operation method thereof. Background Art

[0002] At present, the lifting of bulk bags and other bagged goods in port freight yards is generally completed by using a hook. Specifically, the handle of the bagged goods is directly hung on each hook body of the hook to realize the connection between the bagged goods and the lifting equipment. However, on the one hand, this lifting method is affected by the size of the hook and the length of the handle of the bagged goods, resulting in a limited number of bagged goods lifted each time and unable to effectively utilize the lifting capacity of the lifting equipment. Moreover, the bagged goods hung on the hook are hung obliquely due to the influence of their mutual volume. For bagged goods without a sealed top, it is very easy to scatter during the lifting process, not only causing loss of the total weight of the material, but also posing an operation risk of material dropping and environmental pollution. On the other hand, during the lifting process of the bagged goods, there is also the problem of unloading the bagged goods, which requires manual cooperation. Especially when unloading, the bagged goods are transported from a high position for unloading. Not only does it take a lot of time for workers to get on and off the cargo stack and unhook the hook, resulting in low operation efficiency, but also the shaking of the bagged goods during unloading poses a safety risk to the operators. Based on this, it is necessary to design a special tool for lifting bagged goods to make full use of the advantages of the grab crane, improve the operation efficiency, and reduce the safety risk of personnel. Summary of the Invention

[0003] The object of the present invention is to provide a bulk bag lifting tool with an automatic hook-unhooking function to solve the above technical problems.

[0004] Another object of the present invention is to provide an operation method implemented by using the above-mentioned bulk bag lifting tool with an automatic hook-unhooking function.

[0005] To this end, the technical solution of the present invention is as follows:

[0006] A bulk bag spreader with an automatic hook detachment function, comprising a horizontally arranged suspension beam, on both sides of the bottom of which a plurality of hooks are equidistantly arranged along the length direction of the suspension beam, and a hook detachment mechanism is arranged on the inner wall of the suspension beam above each hook; the hook comprises a hook body and a stop bar; the top side of the hook body is fixed on a first pin shaft, and the first pin shaft is rotatably arranged on the suspension beam; the top end of the stop bar is fixed on the suspension beam and closes the opening side of the hook body; the hook detachment mechanism comprises a hook detachment cylinder, a first transmission rod, a second transmission rod, a return spring and a third transmission rod; the hook detachment cylinder is horizontally arranged, the direction of its piston rod is opposite to the direction of the opening side of the hook body, and its cylinder end is hinged and connected to the suspension beam; the second transmission rod is obliquely arranged below the hook detachment cylinder, and a strip-shaped through hole is formed in its rod body; the first transmission rod is rotatably arranged on the inner wall of the suspension beam, one end of which is hinged and connected to the rod end of the piston rod of the hook detachment cylinder, and the other end is movably arranged in the strip-shaped through hole of the second transmission rod and is initially located on the side close to the hook, so that the first transmission rod rotates when the piston rod of the hook detachment cylinder extends outwards, and pushes the second transmission rod to move towards the hook; the third transmission rod is vertically arranged, the bottom end of which is fixed on the first pin shaft, and the top end of which is hinged and connected to the second transmission rod, so as to drive the hook body to rotate synchronously along with the movement of the second transmission rod; both ends of the return spring are respectively connected to the other end of the first transmission rod and the hinge joint of the third transmission rod and the second transmission rod, and is initially set in a free state.

[0007] Furthermore, the suspension beam is a long strip-shaped cubic frame structure, and two connecting beams arranged in parallel are spanned in the middle of the top side of the suspension beam along the width direction of the suspension beam, and two lifting lugs are symmetrically arranged on both ends of each connecting beam.

[0008] Furthermore, a plurality of suspension rope holes are arranged side by side on the bottom side wall of the suspension beam adjacent to each stop bar.

[0009] Furthermore, the bottom side of the suspension beam extends downwards at equal intervals and forms a plurality of hook mounting parts, and the number of the hook mounting parts is the same as the number of the hooks; mounting holes for mounting the first pin shaft are formed on each hook mounting part along the width direction of the suspension beam.

[0010] Furthermore, the cylinder end of the hook detachment cylinder is hinged and connected to the inner wall of the suspension beam through an oil cylinder base, so that it can swing up and down along the inner wall of the suspension beam; the first transmission rod is a folded line-shaped rod with an obtuse angle, and its bent part is sleeved and rotatably arranged on a fourth pin shaft vertically fixed on the inner wall of the beam body; one end of the first transmission rod is hinged and connected to the rod end of the piston rod of the hook detachment cylinder through a third pin shaft perpendicular to the inner wall of the beam body.

[0011] Further, the second transmission rod is obliquely arranged, with its high end adjacent to the piston rod of the hook-removing cylinder and its low end on one side of the hook; the strip-shaped through hole on the second transmission rod is opened on the rod body near its high end, and the other end of the first transmission rod is provided with a fifth pin shaft which is arranged perpendicular to the inner wall of the beam body, so that the other end of the first transmission rod is inserted into the strip-shaped through hole through the fifth pin shaft; the low end of the second transmission rod is hinged to the top end of the third transmission rod through a sixth pin shaft arranged perpendicular to the inner wall of the beam body.

[0012] Further, each hook is equipped with a lifting rope, and both ends of the lifting rope are provided with rope loops, so that one end of the lifting rope is sleeved on the hook body through the rope loop, and the other end is connected to the lifting rope hole through a shackle connected to the rope loop.

[0013] Further, the lifting rope is made of nylon.

[0014] Further, the bag collecting sling with an automatic hook-removing function further includes a hook-removing controller; the hook-removing controller is arranged on the lifting beam and is electrically connected to the hook-removing cylinders on each hook-removing mechanism respectively to synchronously control the piston rods of all the hook-removing cylinders to extend outwards or retract inwards; a remote transmission device is configured on the hook-removing controller to communicate with a remote controller arranged in the driver's cab of the lifting equipment through wireless transmission.

[0015] An operation method implemented by using the above-mentioned bag collecting sling with an automatic hook-removing function includes the following steps:

[0016] S1. Connect the bag collecting sling to the bottom end of the lifting equipment and lift it to above the bagged goods through the lifting equipment; at this time, one end of the lifting rope on the bag collecting sling is connected to the lifting rope hole through a shackle, and the other end hangs down naturally.

[0017] S2. The lifting equipment lowers the bag collecting sling to an operable height, and the operator manually turns the hook bodies of each hook in sequence to open the hooks, so as to pass the other end of the lifting rope through the handle of the bagged goods and then sleeve it on the hook body; then, the operator releases the hook body, and the hook immediately closes under the action of the return spring.

[0018] S3. After all the hooks are connected to the bagged goods, the lifting equipment lifts the bag collecting sling to the lifting height and transports it to the designated unloading location.

[0019] S4. At the unloading location, the lifting equipment lowers the bag collecting sling to the unloading height; the driver of the lifting equipment remotely controls the hook-removing cylinders of each hook-removing mechanism to synchronously extend the piston rods outwards to open the hooks; the lifting rope then slips off the hook body under the gravity of the bagged goods, and the bagged goods immediately fall smoothly to the unloading position; then, the lifting equipment lifts the bag collecting sling, and the lifting rope is completely separated from the bagged goods.

[0020] S5. The crane driver remotely controls the hook cylinders of each unhooking mechanism to synchronously retract the piston rods inward, so that the hook returns to the closed state; the container bag spreader can continue to be used for transporting the next batch of bagged goods.

[0021] Compared with the prior art, when using the container bag spreader with the automatic unhooking function to transport bagged goods, the number of bagged goods hung can be adjusted according to the maximum lifting capacity of the lifting equipment, so as to achieve the purpose of effectively utilizing the lifting capacity of the lifting equipment; moreover, for this container bag spreader and the supporting operation method, only manual labor is required to hang the goods on the spreader, and the subsequent lifting operation and unloading operation can be controlled by the operator of the lifting equipment. The entire unloading operation does not require the cooperation of workers, which not only avoids the time spent by workers in getting on and off the goods stack and manually unhooking, but also avoids the human-machine cooperation problem during the unloading process and the safety risk of the goods shaking to the unloading personnel; according to the actual application effect, this container bag spreader and its operation method can more than double the loading and unloading efficiency, and the on-site operation has high safety. Brief Description of the Drawings

[0022] Figure 1 It is a schematic side view structure diagram for simultaneously lifting a plurality of bagged goods by using the container bag spreader with the automatic unhooking function in the embodiment of the present invention;

[0023] Figure 2 It is a schematic front view structure diagram for simultaneously lifting a plurality of bagged goods by using the container bag spreader with the automatic unhooking function in the embodiment of the present invention;

[0024] Figure 3 It is a schematic front view structure diagram of the container bag spreader with the automatic unhooking function in the embodiment of the present invention;

[0025] Figure 4 It is a schematic side view structure diagram of the container bag spreader with the automatic unhooking function in the embodiment of the present invention;

[0026] Figure 5 It is a schematic structure diagram of the unhooking mechanism and the hook of the container bag spreader with the automatic unhooking function in the embodiment of the present invention in the initial state (i.e., the hook is in the closed state);

[0027] Figure 6 It is a schematic structure diagram of the unhooking mechanism and the hook of the container bag spreader with the automatic unhooking function in the embodiment of the present invention when the hook is controlled to be in the open state by using the unhooking cylinder;

[0028] Figure 7 It is a schematic structure diagram of the unhooking mechanism and the hook of the container bag spreader with the automatic unhooking function in the embodiment of the present invention when the hook is manually controlled to be in the open state; Detailed Embodiment

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention in any way.

[0030] Example 1

[0031] See also Figures 1 to 4 The bag collecting sling with automatic hook removal function includes a horizontally arranged long strip hanging beam 1, which is specifically a steel beam body with a cubic structure; in order to ensure structural strength while minimizing weight, the long strip hanging beam 1 adopts a cubic steel frame structure.

[0032] In the middle of the top side of the suspension beam 1, two steel connecting beams 4 arranged side by side are spanned and fixed along the width direction of the suspension beam 1, and two steel lifting ears are symmetrically arranged on both end sides of each steel connecting beam 4.

[0033] See also Figure 5 Four steel hooks 2 are arranged at equal intervals on both sides of the bottom of the beam 1 and along the length direction of the beam 1; correspondingly, a hook-removing mechanism 3 is arranged on the inner wall of the beam 1 above each hook 2, and each hook 2 is opened or closed under the driving control of the hook-removing mechanism 3 above it, so that the hook 2 has two usage modes: automatic opening and closing and manual opening and closing.

[0034] In order to facilitate the installation of the hook 2 , four inverted triangle-shaped hook installation parts 103 are extended downward at equal intervals from the bottom side of the hanging beam 1 , and installation holes are opened on the hook installation parts 103 along the width direction of the hanging beam 1 .

[0035] The hook 2 includes a hook body 201 and a stopper 202, which can form an openable and closable lifting structure; wherein a through hole is provided at the top of the hook body 201, and a first pin shaft 203 is passed through and fixed in the through hole, and the first pin shaft 203 is rotatably arranged in the mounting hole corresponding to the hook mounting portion 103, so that the hook body 201 is synchronously rotated with the first pin shaft 203; the stopper 202 is vertically arranged at the opening side of the hook body 201, and its top end is fixed on the mounting portion 103; the hook In the lifting state (i.e. the hook 2 is in the closed state), the stopper 202 blocks the opening side of the hook body 201 to prevent the lifting rope 6 hung on the hook body 201 from falling off the hook body 201; while in the loading and unloading state (i.e. the hook 2 is in the open state), the hook body 201 rotates to the side away from the stopper 202 to separate from the stopper 202, and the lifting rope 6 can be put on the hook body 201 through the gap between the hook body 201 and the stopper 202, or be separated from the hook body 201.

[0036] On the bottom side wall of the suspension beam 1 adjacent to each shift lever 202, five suspension rope holes 102 are arranged side by side. The suspension rope holes 102 are selected according to the size of the bagged goods 5. In practical applications, a suspension rope 6 is threaded through the handle of each bagged goods. One end of the suspension rope 6 is looped and connected to one of the suspension rope holes 102 through a buckle, and the other end is looped and hung on the hook body 201, thus completing the connection between the bagged goods 5 and the lifting tool. The suspension rope 6 is made of nylon.

[0037] See Figures 5 to 7 , the hook unhooking mechanism 3 includes a hook unhooking cylinder 302, a first transmission rod 303, a second transmission rod 305, a return spring 310 and a third transmission rod 304.

[0038] As shown in the direction and position relationship in the figure, based on the opening side of the hook body 201 being on the right side, the hook unhooking cylinder 302 is horizontally arranged with its piston rod facing left on the inner wall of the beam body above the hook body 201. An oil cylinder base 301 is fixed on the inner wall of the beam body. The cylinder barrel end of the hook unhooking cylinder 302 is hinged to the oil cylinder base 301 through a second pin shaft 306 perpendicular to the inner wall of the beam body, enabling the hook unhooking cylinder 302 to swing up and down along the inner wall in the vertical direction around the second pin shaft 306.

[0039] The first transmission rod 303 is a broken-line rod formed by fixedly connecting two short rods with an obtuse angle. In this embodiment, the first transmission rod 303 is a broken-line rod formed by fixedly connecting two short rods with an angle of 150°. One end of the first transmission rod 303 is hinged to the rod end of the piston rod of the hook unhooking cylinder 302 through a third pin shaft 307 perpendicular to the inner wall of the beam body. Its bending part (i.e., the fold angle formed by fixedly connecting the two short rods) is sleeved on the fourth pin shaft 308 vertically fixed on the inner wall of the beam body, so that when the piston rod of the hook unhooking cylinder 302 extends outwards, the first transmission rod 303 rotates counterclockwise around the fourth pin shaft 308. The other end of the first transmission rod 303 is provided with a fifth pin shaft 309, and the fifth pin shaft 309 is arranged in a direction perpendicular to the inner wall of the beam body.

[0040] The second transmission rod 305 is obliquely arranged between the hook unhooking cylinder 302 and the hook 2 with its left end higher and right end lower, and a strip-shaped through hole is arranged along the length direction of the left side rod body of the second transmission rod 305. The fifth pin shaft 309 is inserted into the strip-shaped through hole, enabling the other end of the first transmission rod 303 to reciprocate in the strip-shaped through hole of the second transmission rod 305. In the initial state, the fifth pin shaft 309 is located at the right end of the strip-shaped through hole. In order to prevent the fifth pin shaft 309 from detaching from the second transmission rod 305, a limit ring is fixed at both ends of the fifth pin shaft 309 respectively.

[0041] The third transmission rod 304 is vertically arranged. Its top end is hinged to the right end of the second transmission rod 305 through a sixth pin shaft 311 perpendicular to the inner wall of the beam. Its bottom end is sleeved and fixed on the first pin shaft 203, so that the hook body 201 can rotate clockwise synchronously with the first pin shaft 203 under the drive of the clockwise rotation of the third transmission rod 304, realizing separation from the stop rod 202.

[0042] The return spring 310 is arranged along the length direction of the second transmission rod 305. One end of it is hung on the fifth pin shaft 309, and the other end is hung on the sixth pin shaft 311. And the return spring 310 is set in a free state in the initial state.

[0043] In this embodiment, the hook-removing cylinder 302 adopts an electric cylinder, and each transmission rod and the return spring adopt steel structural parts.

[0044] The bag collecting sling with the automatic hook-removing function further includes a hook-removing controller; the hook-removing controller is arranged on the suspension beam 1 and is electrically connected to the hook-removing cylinders 302 on each hook-removing mechanism 3 respectively to synchronously control the piston rods of all the hook-removing cylinders 302 to extend outwards or retract inwards.

[0045] In this embodiment, a remote transmission device is configured on the hook-removing controller, such as but not limited to a Bluetooth device, a wireless network transmission device. Correspondingly, a remote controller is arranged in the driver's cab of the lifting equipment and is connected to the hook-removing controller through a wireless transmission mode to remotely control the hook-removing controller and realize controlling the piston rods of the two hook-removing cylinders 302 to extend outwards synchronously or retract inwards synchronously.

[0046] See Figures 5 to 7 , the working principles of the hook 2 to realize automatic hook removal and manual hook removal through the hook-removing mechanism 3 are specifically described as follows.

[0047] In the initial state, as Figure 5 shown, the hook 2 is vertically arranged, and the opening side of the hook body 201 is blocked by the stop rod 202; in the hook-removing mechanism 3, the piston rod of the hook-removing cylinder 302 is in a fully retracted state, the first transmission rod 303 is arranged obliquely upwards with its obtuse angle, the fifth pin shaft 309 is located on the right end side of the strip-shaped through hole on the second transmission rod 305, the third transmission rod 304 is vertically arranged, and the return spring 310 is in a free state.

[0048] When automatic hook removal is required, as Figure 6As shown, the piston rod of the unhooking cylinder 302 extends outward to a certain length. During this process, the first transmission rod 303 rotates counterclockwise around the fourth pin shaft 308, and simultaneously pushes the second transmission rod 305 to move obliquely to the right. The third transmission rod 304 rotates clockwise as the second transmission rod 305 moves obliquely to the right, and drives the first pin shaft 203 and the hook body 201 to rotate clockwise synchronously, so that the hook body 201 is separated from the stop rod 202, and the lifting hook is in the open state. At this time, since the bottom end of the hook body 201 is obliquely downward, the lifting rope can automatically fall off the hook body 201.

[0049] When manual hook-up or manual unhooking in an emergency is required, as Figure 7 shown, an operator manually pulls the hook body 201 counterclockwise with one hand to separate it from the stop rod 202, and the lifting hook is in the open state. The operator can then hang or remove the lifting rope on the hook body 201 with the other hand. During the process of manually rotating the hook body 201 counterclockwise, the first pin shaft 203 and the third transmission rod 304 rotate clockwise synchronously, and drive the second transmission rod 305 to move obliquely to the right synchronously. Since the piston rod of the unhooking cylinder 302 remains stationary, the first transmission rod 303 and the fifth pin shaft 309 thereon remain stationary, but as the second transmission rod 305 moves obliquely to the right, the fifth pin shaft 309 relatively moves from the right end to the left end of the strip-shaped through hole on the second transmission rod 305, and the distance between the fifth pin shaft 309 and the sixth pin shaft 311 becomes larger, causing the return spring 310 to be in a stretched state. When the hand of the operator pulling the hook body 201 is released, the return spring 310 automatically returns from the stretched state to the free state. During this process, the second transmission rod 305 moves obliquely to the left under the reset force of the return spring 310, and synchronously drives the third transmission rod 304, the first pin shaft 203 and the hook body 201 to rotate counterclockwise and reset synchronously. The opening side of the hook body 201 is closed again by the stop rod 202, and the fifth pin shaft 309 also returns to the right end side of the strip-shaped through hole of the second transmission rod 305 again.

[0050] Embodiment 2

[0051] An operation method implemented by using the bag lifting device with an automatic unhooking function in Embodiment 1 is specifically described as follows:

[0052] S1. Connect the bag lifting device to the bottom end of the lifting equipment, and transport it above the bagged goods 5 to be lifted by the lifting equipment. At this time, one end of the lifting rope 6 on the bag lifting device is connected to the lifting rope hole 102 through a shackle, and the other end hangs down naturally.

[0053] S2. The lifting equipment lowers the container lifting spreader to the operable height. The on-site operators manually turn the hook bodies 201 of each hook 2 in sequence to open the hooks 2, so that the other end of the lifting rope 6 passes through the handle of the bagged goods 5 and is then sleeved on the hook body 201. Then, when the on-site operators release the hook body 201, the hook 2 immediately returns to the closed state under the action of the return spring 310.

[0054] S3. After all the hooks 2 complete the connection with the bagged goods 5, the lifting equipment lifts the container lifting spreader to the designated height and transports it to the designated unloading location. In this step S3, it should be noted that the number of bagged goods 5 hung on the lifting beam 1 is the same as the total number of hooks 2, or can be less than the total number of hooks 2, which specifically depends on the lifting capacity of the lifting equipment, but it is necessary to ensure that the bagged goods 5 are symmetrically and evenly distributed on the lifting beam 1 to ensure the balance and stability of the lifting beam 1.

[0055] S4. At the unloading location, the lifting equipment lowers the container lifting spreader to the unloading height. The driver of the lifting equipment remotely controls the hook release controller to synchronously extend the piston rods of the hook release cylinders of each hook release mechanism. At this time, the hook body 201 of the hook 2 is in the open state. Under the action of the gravity of the bagged goods 5, the other end of the lifting rope 6 disengages from the hook body 201, and the bagged goods 5 fall smoothly to the unloading position. Immediately, the lifting equipment completes the complete separation of the lifting rope 6 from the bagged goods 5 by lifting the container lifting spreader.

[0056] S5. The driver of the lifting equipment remotely controls the hook release controller to synchronously retract the piston rods of the hook release cylinders of each hook release mechanism. At this time, the hook body 201 of the hook 2 returns to the closed state. The container lifting spreader can continue to be used for the transportation of the next batch of bagged goods 5.

Claims

1. A bulk bag lifting device with an automatic hook detachment function, characterized in that, The invention comprises a horizontally arranged hanging beam (1), a plurality of hanging hooks (2) are arranged at equal intervals on both sides of the bottom thereof along the length direction of the hanging beam (1), and a hook removing mechanism (3) is arranged on the inner wall of the hanging beam (1) above each hanging hook (2); the hanging hook (2) comprises a hook body (201) and a stopper rod (202); the top side of the hook body (201) is fixed on a first pin shaft, and the first pin shaft is rotatably arranged on the hanging beam (1); the top end of the stopper rod (202) is fixed on the hanging beam (1) ) and closes the opening side of the hook body (201); the hook-removing mechanism (3) comprises a hook-removing cylinder (302), a first transmission rod (303), a second transmission rod (305), a return spring (310) and a third transmission rod (304); the hook-removing cylinder (302) is arranged transversely, its piston rod faces the direction opposite to the opening side of the hook body (201), and its cylinder end is hingedly connected to the hanging beam (1); the second transmission rod (305) is obliquely arranged on the hook-removing cylinder (302) ) below, and a strip-shaped through hole is opened on its rod body; the first transmission rod (303) is rotatably arranged on the inner wall of the suspension beam (1), one end of which is hingedly connected to the piston rod end of the hook-removing cylinder (302), and the other end is movably arranged in the strip-shaped through hole of the second transmission rod (305), and is initially located on the side close to the hook (2), so that the first transmission rod (303) rotates through the piston rod of the hook-removing cylinder (302) extending outward, and pushes the second transmission rod (305) to move in the direction of the hook (2); the third transmission rod (304) is vertically arranged, the bottom end of which is fixed on the first pin shaft, and the top end of which is hingedly connected to the second transmission rod (305), so as to drive the hook body (201) to rotate synchronously with the movement of the second transmission rod (305); the two ends of the reset spring (310) are respectively connected to the other end of the first transmission rod (303) and the hinge between the third transmission rod (304) and the second transmission rod (305), and are initially arranged in a free state.

2. The bulk bag hanger with an automatic hook detachment function according to claim 1, characterized in that, The hanging beam (1) is a long cubic frame structure, and two parallel connection beams (4) are arranged in the middle of the top side along the width direction of the hanging beam (1), and two lifting ears are symmetrically arranged at both ends of each connection beam (4).

3. The bulk bag spreader with an automatically detachable hook function according to claim 1, characterized in that, A plurality of hanging rope holes (102) are arranged side by side on the bottom side beam wall of the hanging beam (1) adjacent to each blocking rod (202).

4. The bulk bag hanger with an automatic unhooking function according to claim 1, characterized in that, The bottom side of the hanging beam (1) extends downward at equal intervals and is formed with a plurality of hook mounting portions (103), the number of the hook mounting portions (103) being the same as the number of the hanging hooks (2); each hook mounting portion (103) is provided with a mounting hole for mounting a first pin shaft (203) along the width direction of the hanging beam (1).

5. The bulk bag hanger with an automatic unhooking function according to claim 1, characterized in that, The cylinder end of the hook-removing cylinder (302) is hingedly connected to the inner wall of the hanging beam (1) through the cylinder base (301), so that it can swing up and down along the inner wall of the hanging beam (1); the first transmission rod (303) is a broken line rod with an obtuse angle, and its bent portion is sleeved and rotatably arranged on a fourth pin shaft (308) vertically fixed to the inner wall of the beam body; one end of the first transmission rod (303) is hingedly connected to the piston rod end of the hook-removing cylinder (302) through a third pin shaft (307) arranged vertically to the inner wall of the beam body.

6. The bulk bag hanger with an automatic hook detachment function according to claim 5, characterized in that, The second transmission rod (305) is obliquely arranged, with its high end adjacent to the piston rod of the hook-unhooking cylinder (302) and its low end on one side of the hook (2); the strip-shaped through hole on the second transmission rod (305) is opened on the rod body near its high end, and the other end of the first transmission rod (303) is provided with a fifth pin shaft (309) which is arranged perpendicular to the inner wall of the beam, so that the other end of the first transmission rod (303) is inserted into the strip-shaped through hole through the fifth pin shaft (309); the low end of the second transmission rod (305) is hinged to the top end of the third transmission rod (304) through a sixth pin shaft (311) arranged perpendicular to the inner wall of the beam.

7. The container spreader with an automatic hook release function according to claim 3, characterized in that, Each hook (2) is equipped with a lifting rope (6), and both ends of the lifting rope (6) are provided with rope loops, so that one end of the lifting rope (6) is sleeved on the hook body (201) through the rope loop, and the other end is connected to the lifting rope hole (102) through a shackle connected to the rope loop.

8. The bulk bag hanger with an automatic unhooking function according to claim 7, characterized in that, The lifting rope (6) is made of nylon.

9. The bulk bag spreader with an automatic hook detachment function according to claim 1, characterized in that, It further includes a hook-unhooking controller; the hook-unhooking controller is arranged on the lifting beam (1), and is electrically connected to the hook-unhooking cylinders (302) on each hook-unhooking mechanism (3) respectively, so as to synchronously control the piston rods of all the hook-unhooking cylinders (302) to extend outwards or retract inwards; a remote transmission device is configured on the hook-unhooking controller to communicate with a remote controller arranged in the driver's cab of the lifting equipment through wireless transmission.

10. An operation method implemented by using a bulk bag spreader with an automatic hook release function as described in claim 7 or 8, characterized in that the steps Including: S1. Connect the container lifting spreader to the bottom end of the lifting equipment and hoist it above the bagged goods through the lifting equipment; At this time, one end of the lifting rope (6) on the container lifting spreader is connected to the lifting rope hole (102) through a shackle, and the other end hangs down naturally; S2. The lifting equipment lowers the container lifting spreader to an operable height, and the operator manually flips the hook body (201) of each hook (2) in turn to open the hook (2), so as to pass the other end of the lifting rope (6) through the handle of the bagged goods and then sleeve it on the hook body (201); then, the operator releases the hook body (201), and the hook (2) immediately closes under the action of the return spring (310); S3. After all the hooks (2) complete the connection with the bagged goods, the lifting equipment lifts the container lifting spreader to the hoisting height and transports it to the designated unloading location; S4. At the unloading location, the lifting equipment lowers the container lifting spreader to the unloading height; the driver of the lifting equipment remotely controls the hook-unhooking cylinders (302) of each hook-unhooking mechanism to synchronously extend the piston rods outwards, so that the hooks (2) open; the lifting rope (6) then slips off the hook body (201) under the gravity of the bagged goods, and the bagged goods immediately and smoothly fall to the unloading position; then, the lifting equipment lifts the container lifting spreader, and the lifting rope (6) is completely separated from the bagged goods; S5. The driver of the lifting equipment remotely controls the hook-unhooking cylinders (302) of each hook-unhooking mechanism to synchronously retract the piston rods inwards, so that the hooks (2) are restored to the closed state; the container lifting spreader can continue to be used for the transportation of the next batch of bagged goods.

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