Ton bag lifting appliance with automatic unhooking function

Abstract

The utility model discloses a ton bag lifting appliance with an automatic unhooking function, which belongs to the technical field of ton bag lifting appliances and comprises a cross shell, an upper reinforcing plate and a lower reinforcing plate are fixedly connected to the upper side and the lower side of the cross shell respectively, a lifting hole plate is fixedly connected to the center of the upper side of the upper reinforcing plate, and a lifting hook is fixedly connected to the lifting hole plate. A rotating cylinder is inserted and rotationally connected to the center of the side wall of the lower reinforcing plate, a locking mechanism is arranged on the rotating cylinder, one end of the rotating cylinder penetrates into the cross shell and is fixedly connected with a first bevel gear, and screw rods are rotationally connected to the inner walls of the four ends of the cross shell through bearing seats; the close ends of the four lead screws are fixedly connected with second bevel gears connected with the first bevel gears in an engaged mode. By arranging the rotating drum, the first bevel gear, the second bevel gear, the lead screw, the adjusting frame and the locking mechanism, the distance between the four lifting hook bodies is adjusted, so that the ton bag lifting device is suitable for lifting ton bags of different specifications, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of ton bag slings, in particular to a ton bag sling with an automatic unhooking function. Background Art

[0002] Ton bag, also known as flexible container bag, container bag, space bag, etc., is a medium-sized bulk container. Equipped with a crane or forklift, it can realize containerized unit transportation. It is convenient for transporting bulk powdery materials and has the characteristics of large volume, light weight, and easy loading and unloading. During the port terminal gantry crane lifting operation, many chemical solid product transportation materials are packaged in ton bags. Ton bags are generally made of polyester fibers such as polypropylene and polyethylene. When lifting and transporting ton bags, it is usually necessary to use ton bag slings to hook the four corner hanging rings of the ton bag for lifting and transportation.

[0003] In a Chinese patent for a ton bag sling with an automatic unhooking function (patent number: CN210064906U), the device includes a double-beam ton bag sling, which includes a first single beam and a second single beam arranged in parallel. Six sets of unhooking devices are distributed on the first single beam or the second single beam. When working, the hook is in a downward state, and the sling passes through the ton bag sling and is hung on the hook of the unhooking device for lifting. When the goods are lifted in place, the unhooking device is driven by controlling the telescopic rod of the DC hydraulic push rod to realize the hook flipping. Under the action of gravity, the sling automatically falls off the hook, thereby achieving the effect of automatic unhooking without manual unhooking. However, it is difficult for the sling to adjust the spacing of the four hooks according to the opening size of the ton bag, and the scope of application is small and inconvenient to use. Secondly, the device realizes the automatic unhooking of the ton bag by the sling hook through an electric mechanical structure, and the structure is relatively complex, and the subsequent inspection and maintenance are troublesome, and the manufacturing cost is high. Utility Model Content

[0004] In view of the above-mentioned technical deficiencies, the purpose of the utility model is to provide a ton bag hoist with an automatic unhooking function, which realizes the adjustment of the spacing of the four hooks by arranging a rotating drum, a first bevel gear, a second bevel gear, a screw rod, an adjustment frame and a locking mechanism, so as to be suitable for hoisting ton bags of different specifications, and has the functions of easy use, wide application range and stable positioning; it solves the problem proposed in the background technology that the hoist is difficult to adjust the spacing of the four hooks according to the opening specifications of the ton bag, has a small application range and is inconvenient to use.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions: the utility model provides a ton bag sling with automatic unhooking function, including: a cross shell, wherein the upper and lower sides of the cross shell are respectively fixedly connected with an upper reinforcement plate and a lower reinforcement plate, a hanging hole plate is fixedly connected at the upper center of the upper reinforcement plate, a rotating drum is inserted and rotatably connected at the center of the side wall of the lower reinforcement plate, a locking mechanism is provided on the rotating drum, one end of the rotating drum penetrates into the cross shell and is fixedly connected with a first bevel gear, the inner walls at the four ends of the cross shell are rotatably connected with screw rods through bearing seats, the proximal ends of the four screw rods are fixedly connected with a second bevel gear meshing with the first bevel gear, the four screw rods are threadedly connected with nut blocks, and one side of the nut block is fixedly connected with two symmetrically arranged adjusting frames, the two adjusting frames penetrate the cross shell and are rotatably connected with a hook body.

[0006] Preferably, the locking mechanism includes a slider slidably arranged in the rotating drum, the lower end of the slider is fixedly connected to a push rod, the lower end of the push rod passes through the outside of the rotating drum and is fixedly connected to a rotating wheel, a tension spring is fixedly connected between the slider and the inner bottom wall of the rotating drum, the tension spring is sleeved on the outside of the push rod, both sides of the slider are fixedly connected to L-shaped locking rods, both sides of the rotating drum are provided with slots, two L-shaped locking rods are respectively arranged through two slots, the inner bottom wall of the cross shell is provided with locking grooves arranged at equal intervals around the rotating drum as the center, and one end of the two L-shaped locking rods is inserted in the locking grooves.

[0007] Preferably, the inner walls on both sides of the notch are frictionally connected to the side walls on both sides of the L-shaped locking rod.

[0008] Preferably, the lower reinforcement plate and the side wall of the cross shell are provided with through holes, and the through holes are rotatably connected to the rotating drum via a bearing.

[0009] Preferably, the four end side walls of the cross shell are each provided with two sliding openings, and the two adjustment frames are respectively arranged through the two sliding openings.

[0010] Preferably, the hook body comprises a hook head, a vertical end of the hook head is fixedly connected to a swivel, and a lower end of the swivel is fixedly connected to a counterweight.

[0011] Preferably, reinforcement blocks are fixedly connected between the four side walls of the upper reinforcement plate and the lower reinforcement plate.

[0012] The beneficial effects of the utility model are:

[0013] 1. In the utility model, a rotating drum, a first bevel gear, a second bevel gear, a screw and an adjusting frame are arranged, and the rotating drum is rotated to drive the first bevel gear to rotate. Since the first bevel gear is respectively engaged with the four second bevel gears, the four screws are driven to rotate synchronously. At this time, the nut block is forced to move, driving the two adjusting frames to move, and then driving the hook body to move, so as to adjust the spacing of the four hook bodies so as to be suitable for lifting ton bags of different specifications. The utility model is easy to use and has a wide range of applications.

[0014] 2. In the utility model, by setting a locking mechanism, when it is necessary to rotate the rotating drum to adjust the position of the hook body, it is only necessary to push the rotating wheel, thereby pushing the sliding block fixed to the push rod to slide in the rotating drum. At this time, the tension spring is pulled to generate elastic force, and at the same time, drives the L-shaped locking rod to separate from the locking groove. At this time, the rotation of the rotating drum is unrestricted, and the rotating wheel can be turned to drive the L-shaped locking rod to rotate, thereby realizing the rotation of the rotating drum. After adjustment, the rotating wheel is released. At this time, the elastic force of the tension spring is used to pull the L-shaped locking rod to automatically insert into the locking groove, so that the rotation of the rotating drum can be locked, thereby preventing the hook body from being displaced due to external force, and the positioning is more stable.

[0015] 3. In the utility model, by setting a hook body, since the weight of the counterweight block is greater than the hook head, when the hook body is in a natural state, the hook head is always located at the upper part in a hook shape. In actual use, after the ton bag lifted by the device is placed at a designated location, the sling continues to move downward. At this time, the hook head loses the gravity restraint of the ton bag, and the counterweight block will swing the hook body due to its own gravity, and rotate the hook head to achieve automatic unhooking. This structure does not require the use of a mechanical structure to achieve automatic unhooking, and the structure is simple and ingenious, saving manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle.

[0018] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle.

[0019] Figure 3 It is a schematic diagram of the cross-section structure when viewed from above at the cross shell of the utility model.

[0020] Figure 4 It is a front view cross-sectional structural diagram of the rotating drum of the utility model.

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the hook body in the utility model.

[0022] Explanation of the accompanying drawings: 1-cross shell, 2-upper reinforcement plate, 3-lower reinforcement plate, 4-hanging hole plate, 5-rotating cylinder 6-first bevel gear, 7-screw, 8-second bevel gear, 9-nut block, 10-adjusting frame, 11-hook body, 1101-hook head, 1102-swivel, 1103-counterweight block, 12-slider, 13-push rod, 14-rotating wheel, 15-tension spring, 16-L-shaped locking rod, 17-notch, 18-locking groove, 19-reinforcement block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1:

[0025] like Figures 1 to 3 As shown, the present embodiment provides a ton bag sling with automatic unhooking function, the bag mouth of the ton bag is generally square, comprising: a cross shell 1, the upper and lower sides of the cross shell 1 are respectively fixedly connected with an upper reinforcement plate 2 and a lower reinforcement plate 3, the structure is more solid, a hanging hole plate 4 is fixedly connected at the upper center of the upper reinforcement plate 2, which is used for hanging the hook end of the crane, and has a high degree of balance, a rotating drum 5 is inserted and rotatably connected at the center of the side wall of the lower reinforcement plate 3, and a locking mechanism is provided on the rotating drum 5, one end of the rotating drum 5 penetrates into the cross shell 1 and is fixedly connected with a first bevel gear 6, the inner walls of the four ends of the cross shell 1 are rotatably connected with screw rods 7 through bearing seats, the adjacent ends of the four screw rods 7 are fixedly connected with second bevel gears 8 meshing with the first bevel gear 6, the four screw rods 7 are threadedly connected with nut blocks 9, and one side of the nut block 9 is fixedly connected with two symmetrically arranged adjusting frames 10, and the two adjusting frames 10 penetrate the cross shell 1 and are rotatably connected with a hook body 11.

[0026] Through holes are formed in the side walls of the lower reinforcing plate 3 and the cross shell 1 , and the through holes are rotatably connected to the rotating drum 5 via bearings, so as to facilitate the rotation of the rotating drum 5 .

[0027] The four side walls of the cross shell 1 are each provided with two sliding openings, and the two adjustment frames 10 are respectively arranged through the two sliding openings to facilitate the displacement of the adjustment frames 10 .

[0028] Reinforcement blocks 19 are fixedly connected between the four sides of the upper reinforcement plate 2 and the lower reinforcement plate 3, so that the connection is more secure.

[0029] Principle of this embodiment: when it is necessary to adjust the spacing of the hook bodies 11, rotate the rotating drum 5 to drive the first bevel gear 6 to rotate. Since the first bevel gear 6 is respectively engaged with the four second bevel gears 8, it drives the four screw rods 7 to rotate synchronously. Since the screw rod 7 is threadedly connected to the nut block 9, at this time, the nut block 9 is forced to move, driving the two adjustment frames 10 to move, and then driving the hook body 11 to move, so as to adjust the spacing of the four hook bodies 11 so as to be suitable for lifting ton bags of different specifications. It is easy to use and has a wide range of applications.

[0030] Embodiment 2:

[0031] like Figure 4 As shown, on the basis of retaining all the technical features in the specific embodiment 1, in this embodiment: the locking mechanism includes a slider 12 slidably arranged in the rotating drum 5, the lower end of the slider 12 is fixedly connected to a push rod 13, the lower end of the push rod 13 passes through the outside of the rotating drum 5 and is fixedly connected to a rotating wheel 14, a tension spring 15 is fixedly connected between the slider 12 and the inner bottom wall of the rotating drum 5, the tension spring 15 is sleeved on the outside of the push rod 13, both sides of the slider 12 are fixedly connected with L-shaped locking rods 16, both sides of the rotating drum 5 are provided with slots 17, two L-shaped locking rods 16 are respectively arranged through the two slots 17, the inner bottom wall of the cross shell 1 is provided with locking grooves 18 arranged around the rotating drum 5 at equal intervals, and one end of the two L-shaped locking rods 16 is inserted into the locking grooves 18.

[0032] The inner walls on both sides of the notch 17 are frictionally connected with the side walls on both sides of the L-shaped locking rod 16, so that the displacement of the L-shaped locking rod 16 is more stable.

[0033] Principle of this embodiment: when it is necessary to rotate the rotating drum 5 to adjust the position of the hook body 11, it is only necessary to push the rotating wheel 14, and then push the slider 12 fixed to the push rod 13 to slide in the rotating drum 5. At this time, the tension spring 15 is pulled to generate elastic force, and at the same time, drives the L-shaped locking rod 16 to separate from the locking groove 18. At this time, the rotation of the rotating drum 5 is unrestricted, and the rotating wheel 14 can be rotated to drive the L-shaped locking rod 16 to rotate, thereby realizing the rotation of the rotating drum 5. After adjustment, release the rotating wheel 14. At this time, the elastic force of the tension spring 15 is used to pull the L-shaped locking rod 16 to automatically insert into the locking groove 18, so as to lock the rotation of the rotating drum 5, thereby preventing the hook body 11 from being displaced due to external force, and the positioning is more stable.

[0034] Embodiment three:

[0035] like Figure 1 and Figure 5As shown, on the basis of retaining all the technical features in specific embodiment one and / or embodiment two, in this embodiment: the hook body 11 includes a hook head 1101, the vertical end of the hook head 1101 is fixedly connected to a swivel 1102, and the lower end of the swivel 1102 is fixedly connected to a counterweight block 1103.

[0036] Principle of this embodiment: Since the weight of the counterweight block 1103 is greater than the hook head 1101, when the hook body 11 is in a natural state, the hook head 1101 is always located at the top in an inverted hook shape. In actual use, after the ton bag lifted by the device is placed at a designated location, the sling continues to move downward. At this time, the hook head 1101 loses the gravity restraint of the ton bag, and the counterweight block 1103 will swing the hook body 11 due to its own gravity, and rotate the hook head 1101 to achieve automatic unhooking. This structure does not require the use of a mechanical structure to achieve automatic unhooking, and the structure is simple and ingenious, saving manufacturing costs.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A ton bag sling with automatic unhooking function, characterized in that: include: A cross shell (1), wherein the upper and lower sides of the cross shell (1) are respectively fixedly connected with an upper reinforcement plate (2) and a lower reinforcement plate (3), the upper center of the upper reinforcement plate (2) is fixedly connected with a hanging hole plate (4), the side wall center of the lower reinforcement plate (3) is inserted and rotatably connected with a rotating drum (5), the rotating drum (5) is provided with a locking mechanism, one end of the rotating drum (5) penetrates into the cross shell (1) and is fixedly connected with a first bevel gear (6), the inner walls of the four ends of the cross shell (1) are rotatably connected with a screw rod (7) through a bearing seat, the adjacent ends of the four screw rods (7) are fixedly connected with a second bevel gear (8) meshing with the first bevel gear (6), the four screw rods (7) are threadedly connected with a nut block (9), one side of the nut block (9) is fixedly connected with two symmetrically arranged adjustment frames (10), the two adjustment frames (10) penetrate the cross shell (1) and are rotatably connected with a hook body (11).

2. A ton bag sling with automatic unhooking function as claimed in claim 1, characterized in that: The locking mechanism comprises a slider (12) slidably arranged in the rotating cylinder (5), the lower end of the slider (12) is fixedly connected to a push rod (13), the lower end of the push rod (13) penetrates to the outside of the rotating cylinder (5) and is fixedly connected to a rotating wheel (14), a tension spring (15) is fixedly connected between the slider (12) and the inner bottom wall of the rotating cylinder (5), the tension spring (15) is sleeved on the outer side of the push rod (13), both sides of the slider (12) are fixedly connected to L-shaped locking rods (16), both sides of the rotating cylinder (5) are provided with notches (17), two L-shaped locking rods (16) are respectively arranged through the two notches (17), the inner bottom wall of the cross shell (1) is provided with locking grooves (18) arranged around the rotating cylinder (5) at equal intervals, and one end of the two L-shaped locking rods (16) is inserted into the locking grooves (18).

3. A ton bag sling with automatic unhooking function as claimed in claim 2, characterized in that: The inner walls on both sides of the notch (17) are frictionally connected to the side walls on both sides of the L-shaped locking rod (16).

4. The ton bag sling with automatic unhooking function as claimed in claim 1, characterized in that: The lower reinforcement plate (3) and the side wall of the cross shell (1) are provided with through holes, and the through holes are rotatably connected to the rotating drum (5) via a bearing member.

5. The ton bag sling with automatic unhooking function as claimed in claim 1, characterized in that: The four end side walls of the cross shell (1) are each provided with two sliding openings, and the two adjustment frames (10) are respectively arranged through the two sliding openings.

6. The ton bag sling with automatic unhooking function as claimed in claim 1, characterized in that: The hook body (11) comprises a hook head (1101), a vertical end of the hook head (1101) is fixedly connected to a swivel (1102), and a lower end of the swivel (1102) is fixedly connected to a counterweight block (1103).

7. The ton bag sling with automatic unhooking function as claimed in claim 1, characterized in that: Reinforcement blocks (19) are fixedly connected between the four sides of the upper reinforcement plate (2) and the lower reinforcement plate (3).

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