Lifting appliance for travelling crane

Abstract

The utility model discloses a crane lifting appliance which comprises a frame body, two groups of rod bodies are rotationally connected to the frame body, two groups of winding discs are rotationally connected to the two groups of rod bodies, ropes are wound on the multiple groups of winding discs, two groups of block bodies are arranged on the frame body, one ends and the other ends of the two groups of block bodies are rotationally connected with guide rods, and the guide rods are arranged on the frame body. Worm wheels are connected to one ends of the two sets of rod bodies, a first motor is installed at one end of the frame body, and a double-end worm is connected to the output end of the first motor. According to the utility model, the four groups of lifting hooks are connected with an object to be lifted, the first motor is started to drive the double-end worm to rotate, the double-end worm drives the two groups of worm wheels to rotate, the rod body drives the winding disc to rotate, the rope body is wound, and the lifted object is lifted, so that the multi-lifting-point design avoids the phenomenon that the lifting rope is not damaged when the long-strip-shaped object is lifted to a certain extent; and the middle part of the object is not uniformly stressed, so that deformation or fracture is possibly caused.

Description

Technical Field

[0001] The utility model relates to the technical field related to sling equipment, in particular to a crane sling. Background Art

[0002] A crane hoist is a tool used to lift heavy objects from a crane (or crane). Typically, a hook is connected to the crane's wire rope or chain, from which the object is suspended. When the crane's hoist mechanism is activated, the wire rope or chain pulls the hook upward, lifting the object. The hook's curved shape prevents the object from falling during the lifting process and also facilitates its placement and removal.

[0003] The existing announcement number is: CN221318910U, a crane hoist that lifts and transports heavy objects through a lifting part. The lifting part transmits the pulling force of the heavy object to the balance bar through a cable. The balance bar is rotatably set on the frame. It will rotate under the action of the cable tension and balance the heavy object through the counterweight part at one end to reduce the risk of shaking when the heavy object is lifted and improve the stability of the lifting process.

[0004] Although the above-mentioned existence can reduce the shaking by using the counterweight part, when lifting some long objects, only the two sides of the object can be fixed. The middle part of the object is subjected to uneven force, which may cause the object to deform or break. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a crane hoist.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A crane hoist comprises a frame, wherein the frame is rotatably connected to two groups of rods, the two groups of rods are rotatably connected to two groups of winding drums, and multiple groups of winding drums are wound with ropes, the frame is provided with two groups of blocks, one end and the other end of the two groups of blocks are rotatably connected to guide rods, one end of the two groups of rods are connected to worm gears, a first motor is installed at one end of the frame, the output end of the first motor is connected to a double-headed worm, the double-headed worm is rotatably connected to the frame, multiple groups of ropes are respectively fitted with corresponding guide rods, one end of multiple groups of ropes are connected to hooks, and the double-headed worm is meshed with two groups of worm gears.

[0008] Preferably, a second motor is mounted on the frame, an output end of the second motor is connected to a plate, two groups of connecting members are rotatably connected to the plate, and the two groups of connecting members are respectively connected to corresponding blocks.

[0009] Preferably, the frame is provided with a plurality of groups of grooves, and the plurality of groups of grooves are respectively connected in a sliding manner to corresponding blocks.

[0010] Preferably, two sets of drive components are installed at the four corners of the frame.

[0011] Preferably, one end of multiple groups of hooks are rotatably connected to a round rod, multiple groups of round rods are each covered with a torsion spring, one end of multiple groups of torsion springs are respectively connected to the corresponding hooks, the other end of multiple groups of torsion springs are respectively connected to the corresponding round rods, and multiple groups of round rods are respectively connected to the corresponding baffles.

[0012] Preferably, the directions of the two groups of worm threads on the double-start worm are opposite.

[0013] Preferably, the guide rods of the plurality of groups are made of alloy steel.

[0014] The beneficial effects of the utility model are:

[0015] 1. Through the coordination between the first motor, the reel and the hook, the four sets of hooks are connected to the objects to be lifted. The first motor is started to drive the double-headed worm to rotate, which in turn drives the two sets of worm wheels to rotate. The reel is driven by the rod to rotate, and the rope is reeled to lift the lifted object. The multi-lifting point design avoids the problem of uneven force on the middle part of the object when lifting long objects, which may cause deformation or breakage.

[0016] 2. Through the cooperation between the second motor, the connecting piece and the plate body, the second motor is started to drive the plate body to rotate, and the plate body drives the block body to move through the connecting piece, and then drives the hook to move through the rope body, so that when the hook is hoisting objects, the rope body remains vertical. To a certain extent, objects of different sizes can be lifted vertically, reducing the shaking of the objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a crane hoist proposed in the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the structure of the first motor, worm gear and double-headed worm;

[0019] Figure 3 for Figure 1 Schematic diagram of the structure of the middle rod body, reel and rope body;

[0020] Figure 4 for Figure 1 Schematic diagram of the structure of the middle connector, block and plate;

[0021] Figure 5 for Figure 1 Schematic diagram of the structure of the middle hook, baffle and round rod.

[0022] In the figure: 1. frame; 2. rod; 3. reel; 4. rope; 5. block; 6. guide rod; 7. worm gear; 8. first motor; 9. double-headed worm; 10. trough; 11. hook; 12. round rod; 13. torsion spring; 14. baffle; 15. second motor; 16. plate; 17. connector; 18. drive assembly. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Example 1, with reference to Figures 1 to 5 A crane hoist includes a frame 1, on which are rotatably connected two groups of rods 2, on which are rotatably connected two groups of winding drums 3, the rods 2 drive the winding drums 3 to rotate, and multiple groups of winding drums 3 are wound with ropes 4, which drive the ropes 4 to move. Two groups of blocks 5 are provided on the frame 1, and one end and the other end of the two groups of blocks 5 are rotatably connected to guide rods 6, which guide the ropes 4. One end of the two groups of rods 2 is connected to a worm gear 7, which drives the rods 2 to rotate. A first motor 8 is installed at one end of the frame 1. The model of the first motor 8 can be selected according to actual conditions. The output end of the first motor 8 is connected to a double-headed worm 9. The first motor 8 drives the double-headed worm 9 to rotate, and the double-headed worm 9 is engaged with the worm wheel 7, driving the worm wheel 7 to rotate. The double-headed worm 9 is connected to the frame 1 for rotation, and multiple groups of rope bodies 4 are respectively fitted with corresponding guide rods 6. One end of multiple groups of rope bodies 4 is connected with a hook 11, and the double-headed worm 9 is engaged with two groups of worm wheels 7 to connect multiple groups of hooks 11 to the hoisted object. The first motor 8 drives the worm wheel 7 to rotate through the double-headed worm 9, and then drives the winding drum 3 to rotate through the rod body 2, and the winding rope body 4 is wound to lift the hoisted object. The design of multiple hooks 11 avoids the problem of deformation or breakage of long objects caused by uneven force when lifting long objects to a certain extent.

[0025] In this embodiment, a second motor 15 is installed on the frame 1. The model of the second motor 15 can be selected according to actual conditions. The output end of the second motor 15 is connected to a plate 16. Two sets of connecting members 17 are rotatably connected to the plate 16. The two sets of connecting members 17 are respectively connected to corresponding blocks 5. The second motor 15 drives the plate 16 to rotate. The plate 16 drives the blocks 5 to move through the connecting members 17. The blocks 5 drive the hook 11 to move through the rope 4, which enables the hook 11 to lift objects of different sizes to a certain extent. The frame 1 is provided with multiple sets of slots 10. The multiple sets of slots 10 are respectively slidably connected to corresponding blocks 5. The slots 10 guide the blocks 5. Two sets of drive assemblies 18 are installed at each corner of the frame 1. The drive assembly 18 is composed of a wheel body and a motor. The drive assembly 18 is connected to an external guide rail device. The motor drives the wheel body to rotate, drives the frame 1 to move, and transports the lifted object to other locations. Multiple sets of hooks 11 are rotatably connected to a round rod 12 at one end. Each set of round rods 12 is fitted with a torsion spring 13. One end of each set of torsion springs 13 is connected to a corresponding hook 11, and the other end of each set of torsion springs 13 is connected to a corresponding round rod 12. Each set of round rods 12 is connected to a corresponding baffle 14. Under the action of the torsion springs 13, the baffle 14 engages with the hook 11, preventing objects from slipping off one end of the hook 11 when being lifted. The two sets of worm threads on the double-start worm 9 rotate in opposite directions. The double-start worm 9 drives the worm wheel 7 in opposite directions, which in turn drives the reel 3 in opposite directions via the rod body 2, thereby simultaneously raising or lowering the multiple sets of hooks 11. The multiple sets of guide rods 6 are made of alloy steel, which has the advantages of high strength and good wear resistance. This prevents excessive friction between the rope body 4 and the guide rods 6, which could cause wear on the guide rods 6 and affect the lifting efficiency of the rope body 4.

[0026] The working principle of this embodiment is: when in use, the driving assembly 18 is connected to other guide rail devices to transport the hoisted object to other positions, the second motor 15 is started to drive the plate body 16 to rotate, and the block 5 is driven to move through the connecting member 17, and then the hook 11 is driven to move through the rope body 4. The position of the hook 11 is adjusted according to the size of the object, so that the rope body 4 remains vertical to a certain extent when the hook 11 lifts the object, which reduces the shaking of the object to a certain extent. When the object is hoisted by the hook 11, the baffle 14 is fitted with one end of the hook 11 under the action of the torsion spring 13, which can prevent the object from being unhooked to a certain extent. After the hook 11 is connected to the hoisted object, the first motor 8 is started to drive the double-headed worm 9 to rotate, and the double-headed worm 9 drives the two sets of worm wheels 7 to rotate. Because the two sets of spiral lines on the double-headed worm 9 have different directions, the two sets of worm wheels 7 rotate in opposite directions. The worm wheel 7 drives the reel 3 to reel the rope body 4 through the rod body 2 to lift the object. The design of multiple hooks 11 avoids uneven force on the hoisted long objects, which may cause deformation or breakage of the objects.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A crane hoist, comprising a frame (1), characterized in that: The frame (1) is rotatably connected with two groups of rod bodies (2), and the two groups of rod bodies (2) are rotatably connected with two groups of winding disks (3). Multiple groups of winding disks (3) are wound with rope bodies (4). The frame (1) is provided with two groups of blocks (5), and one end and the other end of the two groups of blocks (5) are rotatably connected with guide rods (6). One end of the two groups of rod bodies (2) is connected with a worm gear (7). A first motor (8) is installed at one end of the frame (1), and the output end of the first motor (8) is connected with a double-headed worm (9). The double-headed worm gear (9) is rotatably connected with the frame (1). Multiple groups of rope bodies (4) are respectively fitted with corresponding guide rods (6). One end of multiple groups of rope bodies (4) is connected with a hook (11), and the double-headed worm gear (9) is meshed with the two groups of worm gears (7).

2. A crane hoist according to claim 1, characterized in that: A second motor (15) is installed on the frame (1), and the output end of the second motor (15) is connected to a plate (16). Two groups of connecting members (17) are rotatably connected to the plate (16), and the two groups of connecting members (17) are respectively connected to corresponding blocks (5).

3. The crane hoist according to claim 1, characterized in that: The frame (1) is provided with a plurality of groups of grooves (10), and the plurality of groups of grooves (10) are respectively connected to corresponding blocks (5) in a sliding manner.

4. The crane hoist according to claim 1, characterized in that: Two sets of driving components (18) are installed at the four corners of the frame (1).

5. The crane hoist according to claim 1, characterized in that: One end of the plurality of groups of hooks (11) is rotatably connected to a round rod (12), and each of the plurality of groups of round rods (12) is covered with a torsion spring (13). One end of the plurality of groups of torsion springs (13) is respectively connected to the corresponding hooks (11), and the other end of the plurality of groups of torsion springs (13) is respectively connected to the corresponding round rod (12), and the plurality of groups of round rods (12) are respectively connected to the corresponding baffles (14).

6. The crane hoist according to claim 1, characterized in that: The two groups of worm threads on the double-start worm (9) are in opposite directions.

7. The crane hoist according to claim 1, characterized in that: The material of the plurality of guide rods (6) is alloy steel.

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