Lifting appliance

Abstract

The utility model relates to a lifting appliance which comprises a bearing frame, the clamping assembly is arranged on the bearing frame and used for clamping and hoisting a product; the lifting foot assembly comprises a lifting foot supporting piece, the lifting foot supporting piece is arranged below the clamping assembly, the lifting foot supporting piece can rotate relative to the clamping assembly, the lifting foot supporting piece rotates to avoid the clamping space before the clamping assembly clamps the lifting product, and the lifting foot supporting piece rotates to avoid the clamping space after the clamping assembly clamps the lifting product. And the lifting foot supporting piece rotates to enter the clamping space, and the lifting foot supporting piece rotates to the position below the lifting product. According to the lifting appliance provided by the utility model, when a product is clamped, the lifting foot supporting piece is adopted to further support the product at the bottom, so that the product can be prevented from accidentally falling off in the lifting process, and the safety of lifting transportation is improved.

Description

Technical Field

[0001] The utility model relates to the field of transfer equipment, in particular to a sling. Background Art

[0002] Hoisting transportation, as a more conventional form of transportation, is often used for the transportation of large materials. For example, in a factory, products are hoisted onto transportation equipment, or at a construction site, products are hoisted off transportation equipment. Each time hoisting transportation is performed, a hoist is required to clamp and fix the product before the product can be transported.

[0003] Most of the existing slings use clamping to fix products. For lighter products, there is no problem in transporting them by clamping and grabbing them, and there is no risk of accidental falling during transportation. However, for heavier products, it is easy for the products to fall off accidentally if they are clamped alone. In actual construction, it is often necessary to use straps and clamping components to fix the products, which not only affects the efficiency of transportation, but also poses certain safety hazards. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the risk of accidental product falling off caused by the slings in the prior art relying solely on clamping for lifting, and to provide a sling that, while clamping the product, further supports the product at the bottom using hanging foot supports, thereby preventing the product from accidentally falling off during the lifting process and improving the safety of lifting and transportation.

[0005] In order to solve the above technical problems, the utility model provides a sling, comprising:

[0006] Carrying frame;

[0007] A clamping assembly, arranged on the carrier frame, for clamping the hoisting product;

[0008] The hanging leg assembly includes: a hanging leg support member, which is arranged below the clamping assembly, and the hanging leg support member can rotate relative to the clamping assembly. Before the clamping assembly clamps the hanging product, the hanging leg support member rotates to avoid the clamping space. After the clamping assembly clamps the hanging product, the hanging leg support member rotates into the clamping space, and the hanging leg support member rotates below the hanging product.

[0009] In one embodiment of the present invention, the hanging leg assembly includes a plurality of groups of hanging leg support members, and the plurality of groups of hanging leg support members jointly support the hanging product.

[0010] In one embodiment of the present invention, the foot assembly further comprises:

[0011] Driving source for hanging feet;

[0012] A rotating shaft, one end of which is connected to the output end of the hanging foot driving source, and is driven by the hanging foot driving source to reciprocate at a fixed point, and the other end of which is connected to the hanging foot supporting member.

[0013] In one embodiment of the utility model, a connecting rod is provided between two adjacent hanging leg supports located on the same side of the hanging product, and both ends of the connecting rod are connected to the two rotating shafts. Through the connecting rod, the hanging leg driving source synchronously drives multiple hanging leg supports on the same side to rotate synchronously.

[0014] In one embodiment of the present invention, the clamping assembly comprises:

[0015] Two clamping arms, the clamping arms are slidably arranged on the supporting frame;

[0016] The clamping driving source drives the two clamping arms to move toward or in opposite directions on the supporting frame.

[0017] In one embodiment of the utility model, a slide rail is arranged on the carrier frame, and a slide groove matching the slide rail is arranged on the clamping arm, the slide rail includes a connecting portion and a limiting portion, two limiting plates are arranged in the slide groove, a limiting gap is formed between the two limiting plates, the connecting portion can pass through the limiting gap, and the limiting portion abuts against the two limiting plates.

[0018] In one embodiment of the present utility model, a transmission member is provided between the two clamping arms and the clamping drive source, and the transmission member comprises:

[0019] A chain, sleeved on the output shaft of the clamping drive source;

[0020] A sprocket, meshingly connected with the chain;

[0021] The transmission shaft is coaxially connected with the sprocket, and the two ends of the transmission shaft are respectively inserted into the two clamping arms, and the transmission shaft is threadedly connected with the clamping arms.

[0022] In one embodiment of the present invention, the clamping drive source has two output shafts, a transmission member is arranged outside each output shaft, and the transmission shafts in the two groups of transmission members jointly support the two clamping arms.

[0023] In one embodiment of the present invention, the support frame is hollowed out, and a plurality of hollow holes are opened on the support frame.

[0024] In one embodiment of the utility model, a plurality of groups of clamping assemblies are arranged on the carrier frame, and each group of the clamping assemblies is provided with a hanging foot assembly.

[0025] The above technical solution of the utility model has the following advantages compared with the prior art:

[0026] The sling of the utility model adopts a clamping assembly to clamp and fix the product during hoisting, and also provides a hanging foot support under the product for support. When the clamping force is insufficient, the product will fall on the hanging foot support, thereby preventing the product from accidentally falling off during hoisting, and improving the safety of hoisting and transportation.

[0027] In addition, the hanging leg support of the utility model is movable. Before the clamping assembly clamps the product, the hanging leg support rotates to avoid the clamping space, which will not affect the clamping action of the clamping assembly. After the clamping assembly clamps the product, the hanging leg support will rotate to the bottom of the product to support the product. Similarly, when the product needs to be removed from the sling, the hanging leg support will first rotate to avoid, and then the clamping assembly will place the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein:

[0029] Figure 1 It is a schematic diagram of the overall structure of the sling of the utility model;

[0030] Figure 2 It is a schematic diagram of the overall structure of the clamping assembly of the utility model;

[0031] Figure 3 It is a schematic diagram of the overall structure of the hanging foot assembly of the utility model.

[0032] Explanation of the reference numerals in the specification: 1. Carrying frame; 11. Slide rail; 12. Hollow hole; 2. Clamping assembly; 21. Clamping arm; 211. Slide groove; 22. Clamping drive source; 231. Chain; 232. Sprocket; 233. Transmission shaft; 3. Hanging foot assembly; 31. Hanging foot support; 32. Hanging foot drive source; 33. Rotating shaft; 34. Connecting rod. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0034] Reference Figure 1As shown, the utility model provides a sling, comprising: a load frame 1, a clamping assembly 2 and a hanging foot assembly 3, wherein: the clamping assembly 2 is arranged on the load frame 1, the clamping assembly 2 can realize the clamping and fixing of the hoisted product, the hanging foot assembly 3 comprises: a hanging foot support 31, the hanging foot support 31 is arranged below the clamping assembly 2, while the clamping assembly 2 clamps and fixes the product, the hanging foot support 31 supports the product below, when the clamping force is insufficient, the product will fall on the hanging foot support 31, thereby preventing the product from accidentally falling off during the hoisting process, and improving the safety of hoisting transportation;

[0035] Specifically, the hanging leg support 31 can also rotate relative to the clamping assembly 2. Before the clamping assembly 2 clamps the hoisting product, the hanging leg support 31 rotates to avoid the clamping space and will not affect the clamping action of the clamping assembly 2. After the clamping assembly 2 clamps the hoisting product, the hanging leg support 31 rotates into the clamping space. The hanging leg support 31 rotates to the bottom of the hoisting product to support it. In this way, during the transportation process, even if the clamping force of the clamping assembly 2 is insufficient, the product will fall on the hanging leg support 31 and will not fall off accidentally.

[0036] Specifically, when the hoisting is completed and the product needs to be placed at the designated position, the hanging leg support 31 is first rotated to avoid the clamping space, and then the clamping assembly 2 releases the product and can be moved out from above the product. The hanging leg support 31 will not affect the movement of the clamping assembly 2.

[0037] Reference Figure 2 As shown, the clamping assembly 2 includes: two clamping arms 21 and a clamping drive source 22 that drives the two clamping arms 21 to move synchronously, wherein: the two clamping arms 21 are slidably arranged on the carrier 1, and the clamping drive source 22 drives the two clamping arms 21 to slide toward or in the opposite direction on the carrier 1, thereby completing the product clamping and releasing actions.

[0038] Specifically, a slide rail 11 is arranged on the carrier frame 1, and a slide groove 211 matching the slide rail 11 is arranged on the clamping arm 21. The slide rail 11 is in an "I"-shaped structure. The slide rail 11 includes a connecting portion and a limiting portion. Two limiting plates are arranged in the slide groove 211, and a limiting gap is formed between the two limiting plates. The connecting portion can pass through the limiting gap, and the limiting portion abuts against the two limiting plates. The slide groove 211 is sleeved on the outside of the slide rail 11 from the side, and the limiting portion can be clamped in the slide groove 211 through the limiting plate, so that the lifting of the clamping arm 21 is realized. Now the clamping arm 21 can only move along the axial direction of the slide rail 11 and cannot fall off the slide rail 11.

[0039] Specifically, the clamping drive source 22 needs to drive the two clamping arms 21 to move synchronously. In some small hoists, the clamping drive source 22 can adopt a cylinder structure with two-way output, and the cylinder drives the two clamping arms 21 to move synchronously. At the same time, the cylinder also controls the clamping force of the clamping assembly 2. However, in some large hoists, the stroke and clamping force of the cylinder are subject to certain restrictions, and the cylinder structure cannot complete the clamping action. At this time, it is necessary to adopt a motor module drive method. For example: in this embodiment, the clamping drive source 22 is set to a motor module. Then, in order to transmit the driving force of the motor module to the two clamping arms 21, a transmission member needs to be set. The transmission member includes: a chain 231, a sprocket 232 and a transmission shaft 233. In the figure: the chain 231 is sleeved on the output shaft of the clamping drive source 22, the sprocket 232 is meshed with the chain 231, and the transmission shaft 233 is coaxially connected with the sprocket 232, so that the power output by the clamping drive source 22 can be transmitted to the transmission shaft 233 through the chain 231 and the sprocket 232, and the two ends of the transmission shaft 233 are respectively inserted into the two clamping arms 21, and the transmission shaft 233 is threadedly connected with the clamping arm 21. In this way, the transmission shaft 233 and the clamping arm 21 form a screw structure, which can convert the axial rotational force of the transmission shaft 233 into the sliding driving force of the clamping arm 21, can drive the two clamping arms 21 to move synchronously, and can provide a greater clamping force than the cylinder structure.

[0040] Specifically, when the length of the clamping arm 21 is short, one transmission shaft 233 is sufficient to support the movement of the two clamping arms 21, and the transmission shaft 233 can be set in the middle. However, when the length of the clamping arm 21 is long, only one transmission shaft 233 in the middle cannot support the lateral movement of the clamping arm 21, and the transmission shaft 233 is easily broken, which poses a certain safety hazard.

[0041] In this embodiment, in order to solve this problem, the clamping drive source 22 is provided with two output shafts, and a transmission member is provided outside each output shaft. The transmission shafts 233 in the two groups of transmission members jointly support the two clamping arms 21, which is equivalent to having one more fulcrum acting on the clamping arm 21, which not only makes the sliding of the clamping arm 21 smoother, but also reduces the lateral force on the transmission shaft 233, thereby preventing the transmission shaft 233 from being broken.

[0042] Reference Figure 3As shown, the hanging foot assembly 3 also includes: a hanging foot driving source 32 and a rotating shaft 33. The hanging foot driving source 32 is arranged on the clamping arm 21, and the rotating shaft 33 passes through the clamping arm 21. One end of the rotating shaft 33 is connected to the output end of the hanging foot driving source 32, and is driven by the hanging foot driving source 32 to reciprocate at a fixed point. The other end of the rotating shaft 33 is connected to the hanging foot support 31, and the power of the hanging foot driving source 32 is transmitted to the hanging foot support 31 through the rotating shaft 33, so as to realize the movement of the hanging foot support 31 relative to the clamping assembly 2.

[0043] Specifically, when supporting a product, only one hanging leg support member 31, i.e., one fulcrum, is extremely unstable. In this embodiment, the hanging leg assembly 3 includes multiple groups of hanging leg support members 31, and the multiple groups of hanging leg support members 31 jointly support the hoisted product.

[0044] In this embodiment, the clamping assembly 2 has two clamping arms 21, so two stilt supports 31 are provided on each clamping arm 21, so that a stable structure with four-point support can be formed. In addition, during actual assembly, a connecting rod 34 is provided between two adjacent stilt supports 31 located on the same side of the lifting product, and both ends of the connecting rod 34 are connected to the two rotating shafts 33. Through the connecting rod 34, the stilt driving source 32 synchronously drives the multiple stilt supports 31 on the same side to rotate synchronously, which not only can achieve synchronous rotation, but also can reduce the number of stilt driving sources 32.

[0045] Specifically, in order to further improve the efficiency of the sling, according to the actual lifting requirements, multiple groups of clamping components 2 can be provided on the carrier 1, referring to Figure 1 As shown, in this embodiment, two groups of clamping assemblies 2 are arranged on the same carrier frame 1, and each group of the clamping assemblies 2 is provided with a hanging foot assembly 3. The multiple groups of the clamping assemblies 2 and the hanging foot assemblies 3 can work independently without interfering with each other, and a single lifting action can realize the transportation of multiple products.

[0046] Specifically, refer to Figure 1 As shown, while ensuring the structural strength of the carrier frame 1, a plurality of hollow holes are opened on the carrier frame 1. The hollowing out of the carrier frame 1 can reduce the mass of the sling as much as possible and reduce the load of the sling driving device.

[0047] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A sling, characterized in that: include: Carrying frame; A clamping assembly, arranged on the carrier frame, for clamping the hoisting product; The hanging leg assembly includes: a hanging leg support member, which is arranged below the clamping assembly, and the hanging leg support member can rotate relative to the clamping assembly. Before the clamping assembly clamps the hanging product, the hanging leg support member rotates to avoid the clamping space. After the clamping assembly clamps the hanging product, the hanging leg support member rotates into the clamping space, and the hanging leg support member rotates below the hanging product.

2. The sling according to claim 1, characterized in that: The hanging foot assembly includes a plurality of groups of hanging foot support members, and the plurality of groups of hanging foot support members jointly support the hanging product.

3. The sling according to claim 1, characterized in that: The hanging foot assembly also includes: Driving source for hanging feet; A rotating shaft, one end of which is connected to the output end of the hanging foot driving source, and is driven by the hanging foot driving source to reciprocate at a fixed point, and the other end of which is connected to the hanging foot supporting member.

4. The sling according to claim 3, characterized in that: A connecting rod is arranged between two adjacent hanging foot supports on the same side of the hanging product, and both ends of the connecting rod are connected to the two rotating shafts. The hanging foot driving source is used to synchronously drive multiple hanging foot supports on the same side to rotate synchronously through the connecting rod.

5. The sling according to claim 1, characterized in that: The clamping assembly comprises: Two clamping arms, the clamping arms are slidably arranged on the supporting frame; The clamping driving source drives the two clamping arms to move toward or in opposite directions on the supporting frame.

6. The sling according to claim 5, characterized in that: A slide rail is arranged on the carrier frame, and a slide groove matching the slide rail is arranged on the clamping arm. The slide rail includes a connecting portion and a limiting portion. Two limiting plates are arranged in the slide groove. A limiting gap is formed between the two limiting plates. The connecting portion can pass through the limiting gap, and the limiting portion abuts against the two limiting plates.

7. The sling according to claim 5, characterized in that: A transmission member is provided between the two clamping arms and the clamping drive source, and the transmission member comprises: A chain, sleeved on the output shaft of the clamping drive source; A sprocket, meshingly connected with the chain; The transmission shaft is coaxially connected with the sprocket, and the two ends of the transmission shaft are respectively inserted into the two clamping arms, and the transmission shaft is threadedly connected with the clamping arms.

8. The sling according to claim 7, characterized in that: The clamping drive source has two output shafts, and a transmission member is arranged outside each output shaft. The transmission shafts in the two groups of transmission members jointly support the two clamping arms.

9. The sling according to claim 1, characterized in that: The support frame is hollowed out, and a plurality of hollow holes are opened on the support frame.

10. The sling according to claim 1, characterized in that: A plurality of groups of clamping assemblies are arranged on the carrier frame, and a hanging foot assembly is arranged in each group of the clamping assemblies.

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