Convenient-to-maintain lifting appliance for crane

Abstract

The utility model discloses a crane sling convenient to maintain, which belongs to the technical field of crane slings, and comprises a mounting frame, a connecting ring is fixed in the center of the top end of the mounting frame, a through screw hole is formed in the side surface of the mounting frame, a transverse plate is mounted in the mounting frame, a connecting screw hole is formed in the side surface of the transverse plate, and a through hole is formed in the connecting screw hole. Connecting bolts are in threaded connection with the interiors of the connecting screw holes and the penetrating screw holes, two sliding grooves are formed in the center of the bottom end of the transverse plate, two sliding blocks are arranged in the sliding grooves in a sliding mode, a threaded rod penetrates through the centers of the sliding blocks in a threaded mode, the threaded matching directions of the threaded rod and the two sliding blocks are opposite, and the end of the threaded rod rotationally penetrates through the side face of the transverse plate. The bottom end of the sliding block is in threaded connection with a connecting frame, a connecting rod is fixed to the bottom end of the connecting frame, and a lifting hook is installed at the bottom end of the connecting rod. In this way, the lifting hook, the transverse plate and the mounting frame can be separated, and maintenance is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of crane lifting tools, and particularly relates to a lifting tool for a crane which is convenient for maintenance. Background Technique

[0002] A crane is a mechanical device that completes operations such as lifting and loading / unloading in an intermittent and repetitive working mode. Its appearance has greatly reduced the labor intensity of manual work. Among them, a lifting tool is a component used to lift heavy objects. Common lifting tools include hooks, lifting rings, lifting suction cups, clamps, and lifting beams, etc. The hook is the most commonly used lifting tool.

[0003] At present, Chinese Patent No. CN202322434550.1 discloses a crane lifting tool, which includes a lifting shell, an adjustment cavity, a moving groove, a connection mechanism, and an adjustment mechanism; wherein an adjustment cavity is opened in the lifting shell, the bottom side of the adjustment cavity is communicated with the moving groove opened on the bottom side surface of the lifting shell, the adjustment mechanism includes an electric push rod, an adjustment seat, a moving block, a guide rod, and a hook. The electric push rod is fixedly connected to the side surface of the lifting shell, the output end of the electric push rod is fixedly connected with an adjustment seat, the bottom side surface of the adjustment seat is fixedly connected with a moving block, the guide rod penetrates through the surface of the adjustment seat in a sliding manner, and the bottom side surface of the moving block is rotatably connected with a hook. It is convenient to adjust the position of the hook for lifting, but the adjustment components are integrally arranged. When maintenance is required, it needs to be removed and replaced as a whole, which is not convenient to use.

[0004] Based on this, the utility model designs a lifting tool for a crane which is convenient for maintenance to solve the above problems. Content of the Utility Model

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a lifting tool for a crane which is convenient for maintenance.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0007] A lifting tool for a crane which is convenient for maintenance includes a mounting frame. A connecting ring is fixed at the center of the top end of the mounting frame. A through screw hole is opened on the side surface of the mounting frame. A cross plate is installed inside the mounting frame. A connecting screw hole is opened on the side surface of the cross plate. A connecting bolt is threadedly connected inside the connecting screw hole and the through screw hole. Two groups of sliding grooves are opened at the center of the bottom end of the cross plate. Two groups of sliders slide in the sliding grooves. A screw rod threadedly penetrates through the centers of the sliders. The directions of the threaded cooperation between the screw rod and the two groups of sliders are opposite. The end of the screw rod rotatably penetrates through the side surface of the cross plate. The bottom end of the slider is threadedly connected with a connecting frame. A connecting rod is fixed at the bottom end of the connecting frame. A hook is installed at the bottom end of the connecting rod.

[0008] Further, the interior of the installation frame is hollow, the horizontal plate is inserted into the installation frame, the outer side of the horizontal plate contacts the inner side of the installation frame, and the through screw hole is arranged at a position slightly above the middle of the installation frame.

[0009] Further, the sliding grooves are symmetrically arranged on both sides of the center of the bottom end of the horizontal plate, one side of the sliding groove penetrates through the side surface of the horizontal plate, both ends of the screw rod are rotatably penetrated with blocking blocks, the blocking blocks slide at both ends of the sliding groove, and one group of the blocking blocks is fixedly threaded on the end of the horizontal plate.

[0010] Further, one end of the screw rod is rotatably penetrated through the blocking block and connected with a smooth part, a connecting cylinder is sleeved outside the smooth part, the connecting cylinder is threadedly connected with the smooth part, and a rotating ring is fixed at the end of the connecting cylinder.

[0011] Further, the connecting bolt is a double-headed bolt and fixing nuts are threadedly fixed at both ends, and the horizontal plane where the bottom end of the slider is located is lower than the horizontal plane where the bottom end of the horizontal plate is located.

[0012] Further, the connecting frame is a concave frame, horizontal screw holes are cooperatively provided on the connecting frame and the slider, and a horizontal bolt is threadedly connected in the horizontal screw hole.

[0013] Further, an installation block is movably sleeved on the side wall of the connecting rod, a reinforcing rod is rotated on the side surface of the installation block, a connecting plate is rotated at the other end of the reinforcing rod, an installation screw hole is provided on the connecting plate, a long hole is cooperatively provided at the bottom end of the horizontal plate, and an installation bolt is threadedly connected in the long hole and the installation screw hole.

[0014] Further, the diameter of the head of the installation bolt is larger than the width of the long hole.

[0015] Beneficial effects

[0016] 1. By providing the installation frame, the through screw hole, the horizontal plate, the connecting screw hole and the connecting bolt, when the hoist needs to be maintained, only the connecting bolt needs to be removed, and at the same time, the connecting frame threadedly connected to the bottom end of the slider is removed, so that the separation of the hook, the horizontal plate and the installation frame can be realized, which is convenient for maintenance;

[0017] 2. By setting a blocking block and arranging the sliding groove through the side of the cross plate, before separating the cross plate from the installation frame, by separating the blocking block from the cross plate, the sliding plate and the screw rod can be taken out of the sliding groove as a whole, further realizing the separation of the device and facilitating use; by setting the connecting bolt as a double-headed bolt, with the cooperation of the fixing nut, the connection strength between the cross plate and the installation frame is improved; by the horizontally arranged horizontal screw hole and horizontal bolt, when using the horizontal bolt to fix the connecting frame and the slider, the horizontal bolt is perpendicular to the stress direction of the connecting frame, avoiding falling off caused by the same direction and improving safety; by setting the installation block, the reinforcing rod, the connecting plate, the installation screw hole, the long hole and the installation bolt, selecting the long hole at a suitable position, adjusting the position of the reinforcing rod and connecting it to the cross plate, the auxiliary connecting rod strengthens the lifting hook, improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 is a three-dimensional view of the main structure of a lifting tool for a crane that is easy to maintain according to the present invention;

[0020] Figure 2 is a three-dimensional view of the installation frame structure of a lifting tool for a crane that is easy to maintain according to the present invention;

[0021] Figure 3 is a three-dimensional view of the cross plate structure of a lifting tool for a crane that is easy to maintain according to the present invention;

[0022] Figure 4 is a three-dimensional view of the screw rod structure of a lifting tool for a crane that is easy to maintain according to the present invention;

[0023] Figure 5 is a three-dimensional view of the reinforcing rod structure of a lifting tool for a crane that is easy to maintain according to the present invention;

[0024] Figure 6 is a three-dimensional view of the enlarged structure of part A of a lifting tool for a crane that is easy to maintain according to the present invention;

[0025] Figure 7 is a three-dimensional view of the rotating ring structure of a lifting tool for a crane that is easy to maintain according to the present invention.

[0026] The reference numerals in the drawings respectively represent:

[0027] 1. Mounting frame; 2. Connecting ring; 3. Through screw hole; 4. Horizontal plate; 5. Connecting screw hole; 6. Connecting bolt; 7. Chute; 8. Slide block; 9. Screw rod; 10. Connecting frame; 11. Connecting rod; 12. Hook; 13. Plug block; 14. Smooth part; 15. Connecting cylinder; 16. Rotating ring; 17. Fixed nut; 18. Horizontal screw hole; 19. Horizontal bolt; 20. Mounting block; 21. Reinforcing rod; 22. Connecting plate; 23. Mounting screw hole; 24. Long hole; 25. Mounting bolt. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0029] The present utility model will be further described below with reference to the embodiments.

[0030] In some embodiments, please refer to the accompanying drawings of the specification Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 , a sling for a crane that is convenient for maintenance, including a mounting frame 1. A connecting ring 2 is fixedly provided at the center of the top end of the mounting frame 1. A through screw hole 3 is provided on the side surface of the mounting frame 1. A horizontal plate 4 is installed inside the mounting frame 1. A connecting screw hole 5 is provided on the side surface of the horizontal plate 4. A connecting bolt 6 is threadedly connected inside the connecting screw hole 5 and the through screw hole 3. Two groups of chutes 7 are provided at the center of the bottom end of the horizontal plate 4. Two groups of slide blocks 8 slide inside the chutes 7. A screw rod 9 threadedly penetrates through the center of the slide block 8. The directions of the threaded fit between the screw rod 9 and the two groups of slide blocks 8 are opposite. The end of the screw rod 9 rotatably penetrates through the side surface of the horizontal plate 4. The bottom end of the slide block 8 is threadedly connected with a connecting frame 10. The bottom end of the connecting frame 10 is fixedly provided with a connecting rod 11. A hook 12 is installed at the bottom end of the connecting rod 11;

[0031] In the embodiments of the present utility model, the horizontal plate 4 passes through the mounting frame 1 and is fixed under the threaded fit of the connecting bolt 6, the connecting screw hole 5 and the through screw hole 3. The connecting frame 10 is threadedly fixed at the bottom end of the slide block 8. When it is necessary to adjust the position of the hook 12, only the screw rod 9 needs to be rotated. By using the threaded fit between the screw rod 9 and the slide block 8, the position of the slide block 8 inside the chute 7 is adjusted, so as to realize the position of the hook 12, which is convenient for lifting operations. When it is necessary to maintain the sling, only the connecting frame 10 needs to be removed and the horizontal plate 4 needs to be taken out of the mounting frame 1, which is convenient for sling maintenance;

[0032] In the embodiment of the present utility model, by providing the mounting frame 1, the through screw hole 3, the cross plate 4, the connecting screw hole 5 and the connecting bolt 6, when it is necessary to maintain the hoist, only the connecting bolt 6 needs to be removed, and at the same time, the connecting frame 10 threadedly connected to the bottom end of the slider 8 is removed, so that the separation of the hook 12, the cross plate 4 and the mounting frame 1 can be realized, which is convenient for maintenance;

[0033] In an example of the present utility model, the inside of the mounting frame 1 is hollow, the cross plate 4 is inserted into the mounting frame 1, the outer side surface of the cross plate 4 contacts the inner side surface of the mounting frame 1, the through screw hole 3 is provided at a position slightly above the middle of the mounting frame 1 to avoid affecting the movement of the slider 8; the sliding grooves 7 are symmetrically arranged on both sides of the center of the bottom end of the cross plate 4, one side of the sliding groove 7 penetrates through the side surface of the cross plate 4, both ends of the screw rod 9 are rotatably penetrated with the plug blocks 13, the plug blocks 13 slide at both ends of the sliding groove 7, and a group of plug blocks 13 are threadedly fixed to the end of the cross plate 4. Before separating the cross plate 4 from the mounting frame 1, by separating the plug blocks 13 from the cross plate 4, the slider 8 and the screw rod 9 can be taken out of the sliding groove 7 as a whole, further realizing the separation of the device and facilitating use; one end of the screw rod 9 is rotatably penetrated through the plug block 13 and connected with a smooth part 14, the outside of the smooth part 14 is sleeved with a connecting cylinder 15, the connecting cylinder 15 is threadedly connected with the smooth part 14, and a rotating ring 16 is fixed at the end of the connecting cylinder 15. The rotating ring 16 is connected to the end of the screw rod 9 through the threaded fit of the connecting cylinder 15 and the smooth part 14, which is convenient for rotation;

[0034] In some embodiments, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 shown, as a preferred embodiment of the present utility model, the connecting bolt 6 is a double-headed bolt and fixed nuts 17 are threadedly fixed at both ends, the horizontal plane where the bottom end of the slider 8 is located is lower than the horizontal plane where the bottom end of the cross plate 4 is located, the connecting frame 10 is a concave frame, horizontal screw holes 18 are formed in the connecting frame 10 and the slider 8 in a matching manner, a horizontal bolt 19 is threadedly connected in the horizontal screw holes 18, a mounting block 20 is movably sleeved on the side wall of the connecting rod 11, a reinforcing rod 21 is rotated on the side surface of the mounting block 20, the other end of the reinforcing rod 21 is rotated with a connecting plate 22, a mounting screw hole 23 is formed in the connecting plate 22, a long hole 24 is formed in the bottom end of the cross plate 4 in a matching manner, and a mounting bolt 25 is threadedly connected in the long hole 24 and the mounting screw hole 23, and the diameter of the head of the mounting bolt 25 is larger than the width of the long hole 24;

[0035] In the embodiment of the present utility model, when the equipment needs to be maintained, the mounting bolt 25 is removed from the mounting screw hole 23 and the long hole 24, so that the connecting plate 22 and the cross plate 4 are separated. Then, the horizontal bolt 19 is removed from the horizontal screw hole 18, so that the connecting frame 10 and the slider 8 are separated. Then, the rotating ring 16 and the screw rod 9 are separated by using the connecting cylinder 15. Then, the plug block 13 is removed, and the slider 8 and the screw rod 9 as a whole are slid out of the chute 7. Finally, the connecting bolt 6 is removed, and the cross plate 4 is taken out of the mounting frame 1, realizing the separation of the mounting frame 1, the cross plate 4, the slider 8 and the connecting frame 10, which is convenient for maintaining and replacing each component;

[0036] In the embodiment of the present utility model, by using the connecting bolt 6 which is set as a double-headed bolt and cooperating with the fixing nut 17, the connection strength between the cross plate 4 and the mounting frame 1 is improved; by the horizontally arranged horizontal screw hole 18 and the horizontal bolt 19, when the connecting frame 10 and the slider 8 are fixed by the horizontal bolt 19, the horizontal bolt 19 is perpendicular to the force direction of the connecting frame 10, avoiding falling off caused by the same direction and improving safety; by setting the mounting block 20, the reinforcing rod 21, the connecting plate 22, the mounting screw hole 23, the long hole 24 and the mounting bolt 25, selecting the long hole 24 at a suitable position, adjusting the position of the reinforcing rod 21, connecting it with the cross plate 4, and the auxiliary connecting rod 11 strengthens the hook 12, improving the stability of the device.

[0037] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A crane sling that is easy to maintain, comprising a mounting frame (1), characterized in that: A connecting ring (2) is fixed at the center of the top of the installation frame (1), a through screw hole (3) is provided on the side of the installation frame (1), a transverse plate (4) is installed in the installation frame (1), a connecting screw hole (5) is provided on the side of the transverse plate (4), the connecting screw hole (5) and the through screw hole (3) are threadedly connected with a connecting bolt (6), two groups of slide grooves (7) are provided at the center of the bottom end of the transverse plate (4), two groups of sliders (8) are slidably arranged in the slide grooves (7), a screw rod (9) is threadedly passed through the center thread of the slider (8), the screw rod (9) and the two groups of sliders (8) are threadedly matched in opposite directions, the end of the screw rod (9) is rotated to pass through the side of the transverse plate (4), the bottom end of the slider (8) is threadedly connected with a connecting frame (10), a connecting rod (11) is fixed at the bottom end of the connecting frame (10), and a hook (12) is installed at the bottom end of the connecting rod (11).

2. The easy-to-maintain crane sling according to claim 1, characterized in that: The interior of the installation frame (1) is hollow, the transverse plate (4) is inserted into the installation frame (1), the outer side surface of the transverse plate (4) contacts the inner side surface of the installation frame (1), and the through screw hole (3) is arranged at a middle upper position of the installation frame (1).

3. The easy-to-maintain crane sling according to claim 2, characterized in that: The slide groove (7) is symmetrically arranged on both sides of the center of the bottom end of the horizontal plate (4), one side of the slide groove (7) passes through the side of the horizontal plate (4), and the two ends of the screw rod (9) are rotatably penetrated by a blocking block (13), and the blocking block (13) slides at the two ends of the slide groove (7), and a group of the blocking blocks (13) are threadedly fixed on the end of the horizontal plate (4).

4. The easy-to-maintain crane sling according to claim 3, characterized in that: One end of the screw rod (9) rotates through the block (13) and is connected to a smooth portion (14). A connecting tube (15) is sleeved on the outside of the smooth portion (14). The connecting tube (15) and the smooth portion (14) are threadedly connected. A rotating ring (16) is fixed to the end of the connecting tube (15).

5. The easy-to-maintain crane sling according to claim 4, characterized in that: The connecting bolt (6) is a stud bolt with fixing nuts (17) threadedly fixed at both ends. The horizontal plane at the bottom end of the sliding block (8) is lower than the horizontal plane at the bottom end of the horizontal plate (4).

6. The easy-to-maintain crane sling according to claim 5, characterized in that: The connecting frame (10) is a concave frame. The connecting frame (10) and the sliding block (8) are matched with horizontal screw holes (18). The horizontal screw holes (18) are internally threaded with horizontal bolts (19).

7. The easy-to-maintain crane sling according to claim 6, characterized in that: A mounting block (20) is movably sleeved on the side wall of the connecting rod (11), a reinforcing rod (21) is rotatably mounted on the side of the mounting block (20), a connecting plate (22) is rotatably mounted on the other end of the reinforcing rod (21), a mounting screw hole (23) is provided on the connecting plate (22), a long hole (24) is provided at the bottom end of the cross plate (4), and a mounting bolt (25) is threadedly connected between the long hole (24) and the mounting screw hole (23).

8. The crane sling for easy maintenance according to claim 7, characterized in that: The diameter of the head of the mounting bolt (25) is greater than the width of the long hole (24).

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