Rotary crane sling

Abstract

The utility model discloses a rotary crane sling, which relates to the technical field of crane slings and comprises a first platform and a second platform, the second platform is rotatably mounted at the bottom of the first platform, two ends of the second platform are fixedly connected with extension platforms, one side of each extension platform is fixedly provided with a limit component, and the limit component is fixedly connected with the first platform. The limiting assembly comprises a hollow protection block, a positioning block and a turning block, the binding rope in the limiting assembly can be used for binding goods when the goods are lifted, the winding roller is used for containing and collecting the binding rope, meanwhile, the binding rope can be recycled, the recycled binding rope has the better binding capacity for the goods, and the binding rope is not prone to falling off. The movable space of the goods can be further reduced, so that the effect of improving the stability of the goods is achieved, and the problem of shaking of the goods is avoided as much as possible in the rotating process of the second platform.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crane sling technical field especially relates to a rotary crane sling. BACKGROUND

[0002] The crane sling is a kind of equipment for hoisting and moving goods, and the rotary sling is usually installed on the boom of the crane, which can rotate in the horizontal direction to move the goods to the required position.

[0003] In the prior art, for example, Chinese patent CN219279228U discloses a rotary sling for bridge crane, which comprises an upper sling and a lower sling arranged oppositely, the upper surface of the upper sling is provided with a lifting buckle at both ends, the lower surface of the upper sling is provided with a fixed disc at the middle, the middle of the two side walls of the upper sling is provided with a mounting plate, the mounting plate is provided with a driving motor, the rotating shaft of the driving motor is provided with a gear disc, the upper surface of the lower sling is provided with a rotating disc at the middle, the rotating disc and the fixed disc are connected by bolts, the rotating disc and the fixed disc are matched by the gear disc, the two ends of the two side walls of the lower sling are provided with fixed hooks, and an adjustable hook assembly is arranged between the two groups of fixed hooks on the same side.

[0004] However, in the prior art, during the rotation of the rotary sling, the goods have a certain weight, and the greater the weight of the goods, the greater the inertia, which will generate a large centrifugal force during rotation. If the rotation speed is too fast, the goods will easily shake, which will directly affect the overall stability if the shaking amplitude is too large, and there is a risk of goods falling off. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the problem of the prior art that the overall stability is directly affected if the shaking amplitude is too large, and provides a rotary crane sling.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a rotary crane sling, comprising a first platform and a second platform, the second platform is rotatably installed at the bottom of the first platform, both ends of the second platform are fixedly connected with an extension platform, one side of the extension platform is fixedly installed with a limiting assembly;

[0007] The limiting assembly comprises a hollow protection block, a positioning block and a direction-changing block, one side of the direction-changing block is rotatably connected with a winding roller, one end of the winding roller is fixedly connected with a binding rope, one end of the binding rope is fixedly connected with an inverted hook, the lower surface of the extension platform is provided with a butt joint groove, one end of the winding roller is fixedly connected with a butt joint rod, the butt joint rod is rotatably connected in the positioning block, the hollow protection block is fixedly installed on one side of the extension platform, and a control rod is rotatably connected in the extension platform.

[0008] Preferably, one side of the control rod is fixedly connected with a movable rod, and the other end of the movable rod is slidably connected with a positioning rod.

[0009] Preferably, the positioning rod is fixedly installed on one side of the extension platform, and a ratchet wheel is fixedly connected to the outer wall of the movable rod.

[0010] Preferably, an extension frame is fixedly installed on one side of the positioning rod, and a blocking rod is rotatably connected to one end of the extension frame.

[0011] Preferably, the blocking rod is located on one side of the ratchet wheel.

[0012] Preferably, a first bevel gear is fixedly installed at the other end of the abutting rod, and the first bevel gear is located on the other side of the ratchet wheel.

[0013] Preferably, a second bevel gear is fixedly installed on the outer wall of the movable rod, and the second bevel gear is in meshing connection with the first bevel gear.

[0014] Compared with the prior art, the utility model has the advantages and positive effects that:

[0015] 1. In the utility model, the extension platform is installed at both ends of the second platform, and the limiting assembly is arranged on the side surface of the extension platform. The binding rope in the limiting assembly can be used to bind the goods during hoisting of the goods. The winding roller is used for containing and collecting the binding rope. The binding rope can be recycled. After recycling, the binding rope has better binding capacity for the goods, so that the activity space of the goods can be further reduced, thereby achieving the effect of improving the stability of the goods. During rotation of the second platform, the problem of goods shaking is avoided as much as possible.

[0016] 2. In the utility model, the control rod is arranged in the hollow block. The movable rod on the side surface of the control rod is in sliding connection with the positioning rod. When it is necessary to limit the length of the binding rope, the movable rod is pushed along the direction of the positioning rod, so that the first bevel gear and the second bevel gear are meshed together. At this time, the control rod can be rotated to recycle the binding rope. Meanwhile, the ratchet wheel and the blocking rod are used in cooperation to prevent the control rod from rotating, thereby ensuring the stability of the binding rope. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A three-dimensional structure schematic view of the rotary crane hoist is provided for the utility model;

[0018] Figure 2 An extension platform and a limiting assembly three-dimensional structure schematic view of the rotary crane hoist is provided for the utility model;

[0019] Figure 3The utility model provides a kind of extension platform of rotary crane sling's bottom view.

[0020] Figure 4 The utility model provides a kind of extension platform of rotary crane sling's limit component three-dimensional structure schematic diagram.

[0021] Figure 5 The utility model Figure 4 The structure of part A in the enlarged schematic diagram.

[0022] Legend: 1, first platform;2, second platform;3, extension platform;4, limit component;41, hollow protection block;42, positioning block;43, direction-changing block;44, winding roller;45, binding rope;46, barb;47, butt joint groove;48, control rod;49, movable rod;410, second bevel gear;411, positioning rod;412, ratchet wheel;413, extension frame;414, blocking rod;415, butt joint rod;416, first bevel gear. Specific embodiments

[0023] In order to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the utility model will be further described below in conjunction with the drawings and examples. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0025] Example one

[0026] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 indicated, the utility model provides a kind of rotary crane sling, including first platform 1 and second platform 2, second platform 2 is rotationally installed at the bottom of first platform 1, and the both ends of second platform 2 are fixedly connected with extension platform 3, and the side of extension platform 3 is fixedly installed with limit component 4, limit component 4 includes hollow protection block 41, positioning block 42 and direction-changing block 43, and the side of direction-changing block 43 is rotationally connected with winding roller 44, and one end of winding roller 44 is fixedly connected with binding rope 45, and one end of binding rope 45 is fixedly connected with barb 46, and the lower surface of extension platform 3 is provided with butt joint groove 47, and one end of winding roller 44 is fixedly connected with butt joint rod 415, and butt joint rod 415 is rotationally connected in the inside of positioning block 42, and hollow protection block 41 is fixedly installed on the side of extension platform 3, and control rod 48 is rotationally connected in the inside of extension platform 3.

[0027] The specific settings and functions of this embodiment are described below. The first platform 1 and the second platform 2 are rotatably connected. When lifting goods, the limiting component 4 is used to fix the goods under the second platform 2 and the extension platform 3. Then, the motor installed in the first platform 1 is started to drive the second platform 2 to rotate, thus completing the change of position and direction.

[0028] The limiting component 4 uses a binding cable 45 to secure the goods. When securing the goods, the binding cable 45 is pulled out from the take-up roller 44. After the binding cable 45 is attached to the surface of the goods, the barb 46 is hooked into the docking groove 47. The control rod 48 is inserted into the hollow protective block 41. Then, the control rod 48 is rotated to drive the take-up roller 44 to rotate, and the excess binding cable 45 is retrieved onto the take-up roller 44 to complete the limiting of the binding cable 45, thereby improving the binding ability of the goods and improving the stability of the goods by reducing the space for the goods to move.

[0029] One end of the connecting rod 415 at the end of the take-up roller 44 is set inside the hollow protective block 41 to prevent some structures from coming into contact with the external environment. The positioning block 42 is mainly used to determine the position of the connecting rod 415. In addition, the take-up roller 44 is rotatably mounted on the side of the deflector block 43 to ensure the stability of the take-up roller 44. The presence of the deflector block 43 is mainly used to change the direction of the binding cable 45.

[0030] Example 2

[0031] like Figure 4 and Figure 5 As shown, a movable rod 49 is fixedly connected to one side of the control rod 48, and a positioning rod 411 is slidably connected to the other end of the movable rod 49. The positioning rod 411 is fixedly installed on one side of the extension platform 3. A ratchet 412 is fixedly connected to the outer wall of the movable rod 49. An extension frame 413 is fixedly installed on one side of the positioning rod 411. A blocking rod 414 is rotatably connected to one end of the extension frame 413. The blocking rod 414 is located on one side of the ratchet 412. A first bevel gear 416 is fixedly installed on the other end of the docking rod 415. The first bevel gear 416 is located on the other side of the ratchet 412. A second bevel gear 410 is fixedly installed on the outer wall of the movable rod 49. The second bevel gear 410 is meshed with the first bevel gear 416.

[0032] The overall effect of this embodiment is that the control lever 48 is slidably connected to the positioning lever 411 via the movable lever 49. The second bevel gear 410 provided on the outer wall of the movable lever 49 is mainly used to drive the first bevel gear 416 to rotate, thereby achieving the purpose of winding the binding rope 45. At this time, the ratchet 412 at the end of the movable lever 49 contacts the blocking lever 414 on the extension frame 413 to prevent the movable lever 49 from rotating, thereby ensuring that the second bevel gear 410 can only rotate in one direction.

[0033] When the binding rope 45 is released, the movable rod 49 is pulled out of the positioning rod 411 by a distance, so that the first bevel gear 416 is separated from the second bevel gear 410, at this time the ratchet wheel 412 is separated from the blocking rod 414, and the first bevel gear 416 can be freely rotated.

[0034] The working principle and method of using the device: when binding the goods, first pull the movable rod 49 out of the positioning rod 411 by a distance, then pull the binding rope 45 out of the winding roller 44, hook the barb 46 into the butt joint groove 47 after the binding rope 45 is bound to the surface of the goods, then push the control rod 48 into the hollow protection block 41, so that the second bevel gear 410 is engaged with the first bevel gear 416, at this time the ratchet wheel 412 is in contact with the blocking rod 414 on the extension frame 413, which can prevent the second bevel gear 410 from rotating, so as to ensure that the control rod 48 can only rotate in one direction, and the purpose of fixing the winding roller 44 is achieved.

[0035] Finally, rotate the control rod 48 to recover the excess binding rope 45 to the winding roller 44, and improve the stability of the goods by reducing the activity space of the goods, when lifting the goods, start the motor arranged in the first platform 1 to drive the second platform 2 to rotate, so as to complete the change of position and direction.

[0036] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments without departing from the technical scheme of the present application, according to the technical essence of the present application, still belongs to the protection scope of the technical scheme of the present application.

Claims

1. A rotary crane spreader comprising a first platform (1) and a second platform (2), the second platform (2) being mounted rotatably on the bottom of the first platform (1), characterized in that: Both ends of the second platform (2) are fixedly connected with extension platforms (3), one side of the extension platform (3) is fixedly installed with a limiting assembly (4); The limiting assembly (4) comprises a hollow protection block (41), a positioning block (42) and a direction-changing block (43), one side of the direction-changing block (43) is rotatably connected with a winding roller (44), one end of the winding roller (44) is fixedly connected with a binding rope (45), one end of the binding rope (45) is fixedly connected with an inverted hook (46), the lower surface of the extension platform (3) is provided with a butt joint groove (47), one end of the winding roller (44) is fixedly connected with a butt joint rod (415), the butt joint rod (415) is rotatably connected in the positioning block (42), the hollow protection block (41) is fixedly installed on one side of the extension platform (3), and the inside of the extension platform (3) is rotatably connected with a control rod (48).

2. A rotary crane spreader according to claim 1, characterized in that: One side of the control rod (48) is fixedly connected with a movable rod (49), and the other end of the movable rod (49) is slidably connected with a positioning rod (411).

3. A rotary crane spreader according to claim 2, characterized in that: The positioning rod (411) is fixedly installed on one side of the extension platform (3), and the outer wall of the movable rod (49) is fixedly connected with a ratchet wheel (412).

4. A rotary crane spreader according to claim 3, characterized in that: One side of the positioning rod (411) is fixedly installed with an extension frame (413), and one end of the extension frame (413) is rotatably connected with a blocking rod (414).

5. A rotary crane spreader according to claim 4, characterized in that: The blocking rod (414) is located on one side of the ratchet wheel (412).

6. A rotary crane spreader according to claim 1, characterized in that: The other end of the butt joint rod (415) is fixedly installed with a first bevel gear (416), and the first bevel gear (416) is located on the other side of the ratchet wheel (412).

7. A rotary crane spreader according to claim 2, characterized in that: The outer wall of the movable rod (49) is fixedly installed with a second bevel gear (410), and the second bevel gear (410) is in meshing connection with the first bevel gear (416).

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