Lifting appliance for carrying aluminum bar

Abstract

A lifting appliance for carrying aluminum bars comprises a lifting ring, two clamping assemblies arranged in the length direction of the aluminum bars at intervals, a connecting structure for connecting the lifting ring and the two clamping assemblies at the same time, a first supporting rod, a second supporting rod and a third supporting rod, wherein the first supporting rod, the second supporting rod and the third supporting rod are arranged between the two clamping assemblies and connected with the two clamping assemblies in a positioning mode. Wherein the two groups of clamping assemblies are symmetrically arranged; each clamping assembly comprises two clamping arms which are arranged in a crossed mode and hinged to each other, and each clamping arm comprises a connecting rod and an arc-shaped clamping jaw which are integrally formed. The lifting appliance is configured in the mode that the lifting ring is pulled upwards, and the two pairs of clamping jaws in the two clamping assemblies are synchronously closed in the radial direction of the aluminum bar through the connecting structure; the hanging ring is pressed downwards, and the two pairs of clamping jaws in the two clamping assemblies are synchronously opened in the radial direction of the aluminum bar through the connecting structure. The lifting appliance is simple in structure, small in size, suitable for places with narrow space and severe environment, low in cost and simple in manufacturing process.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum bar processing, and in particular to a hanger for carrying aluminum bars. Background Art

[0002] In the aluminum processing industry, aluminum bars are the main raw material for production. There are cylindrical aluminum products with various diameters and lengths, and the weight of a single piece ranges from a few kilograms to hundreds of kilograms. Before processing, the aluminum bars are first moved to the heating area by forklifts or slings to wait for heating. However, after the aluminum bars enter the heating furnace for heating, they suddenly encounter abnormal conditions and need to be urgently transferred. Due to the high temperature and area restrictions, conventional forklifts and slings are difficult to operate, and it is easy to cause burns to the operator during the operation.

[0003] Therefore, how to solve the above-mentioned deficiencies in the prior art has become a subject to be studied and solved by the present invention. Summary of the invention

[0004] The purpose of the present invention is to provide a sling for carrying aluminum bars.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a lifting device for carrying aluminum bars, comprising a lifting ring, two groups of clamping assemblies arranged at intervals along the length direction of the aluminum bars, a connecting structure connecting the lifting ring and the two groups of clamping assemblies at the same time, a first supporting rod, a second supporting rod and a third supporting rod arranged between the two groups of clamping assemblies and positioning and connecting the two clamping assemblies; wherein the two groups of clamping assemblies are symmetrically arranged; The two groups of clamping assemblies each include two clamping arms that are cross-arranged and hinged to each other, and each of the clamping arms includes an integrally formed connecting rod and an arc-shaped clamping claw; wherein the upper ends of the two connecting rods in the first group of clamping assemblies are respectively hinged to the first ends of the first support rod and the second support rod, and the upper ends of the two connecting rods in the second group of clamping assemblies are respectively hinged to the second ends of the first support rod and the second support rod; the lower ends of the two connecting rods in the first group of clamping assemblies are simultaneously hinged to the first end of the third support rod, and the lower ends of the two connecting rods in the second group of clamping assemblies are simultaneously hinged to the second end of the third support rod; The lifting device is configured to: pull the lifting ring upwards, and through the connecting structure, the two pairs of jaws in the two clamping assemblies are synchronously closed along the radial direction of the aluminum rod; press the lifting ring downwards, and through the connecting structure, the two pairs of jaws in the two clamping assemblies are synchronously opened along the radial direction of the aluminum rod.

[0006] In the above scheme, the two pairs of clamping arms in the two groups of clamping assemblies form a linkage to form a downward pressing ring, and the two pairs of jaws in the two groups of clamping assemblies automatically open and move downward corresponding to the outer periphery of the aluminum rod. When the jaws cover the outer periphery of the aluminum rod, the ring is pulled upward. Under the action of the weight of the ring and the aluminum rod, the two pairs of jaws close inward at the same time and clamp the aluminum rod, thereby realizing the lifting of the aluminum rod.

[0007] A further technical solution is that the connecting structure includes two groups of rods and a fourth support rod arranged between the two groups of rods and positioning and connecting the two groups of rods, the two groups of rods are respectively arranged corresponding to the two groups of clamping assemblies, and each group of rods includes two push rods; the upper ends of the two push rods in the first group of rods are simultaneously hinged to the first end of the fourth support rod, and the upper ends of the two push rods in the second group of rods are simultaneously hinged to the second end of the fourth support rod; the lower ends of the two push rods in the first group of rods are respectively hinged to the first ends of the first support rod and the second support rod, and the lower ends of the two push rods in the second group of rods are respectively hinged to the second ends of the first support rod and the second support rod; the lifting ring is fixed on the fourth support rod.

[0008] According to a further technical solution, the sling is also provided with a limiting structure for limiting the movement of the two groups of clamping assemblies on each support rod.

[0009] According to a further technical solution, the limiting structure includes a limiting ring sleeved on the support rod.

[0010] According to a further technical solution, the limiting structure further comprises a set of steel pipes arranged on the third support rod, and the steel pipes are located between the two sets of clamping assemblies.

[0011] According to a further technical solution, the clamping assembly, the connecting structure, the lifting ring and each of the supporting rods are made of steel material. The steel material ensures the overall structural strength of the lifting device, and the lifting device will not be damaged when lifting a high-temperature aluminum rod.

[0012] The working principle and advantages of the present invention are as follows: In this case, the two pairs of clamping arms in the two groups of clamping assemblies of the lifting equipment are linked to form a downward pressing lifting ring. The two pairs of jaws in the two groups of clamping assemblies automatically open and move downward corresponding to the outer periphery of the aluminum rod. When the jaws cover the outer periphery of the aluminum rod, the lifting ring is pulled upward. Under the action of the weight of the lifting ring and the aluminum rod, the two pairs of jaws automatically close inward and clamp the aluminum rod at the same time, thereby realizing the lifting of the aluminum rod and ensuring the safety and reliability of the lifting process.

[0013] The sling in this case is not only simple in structure and small in size, suitable for places with narrow space and harsh environment, but also low in cost and simple in manufacturing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 It is a schematic structural diagram of a lifting device according to an embodiment of the present invention.

[0015] In the above drawings: 1. lifting ring; 2. first supporting rod; 3. second supporting rod; 4. third supporting rod; 5. clamping arm; 5a. connecting rod; 5b. clamping claw; 6. fourth supporting rod; 7. push rod; 8. limiting ring; 9. steel pipe. Implementation

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Embodiment: The present invention will be clearly described below with diagrams and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0017] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0018] The terms “first”, “second”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0019] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0020] The terms “include,” “including,” “have,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0021] The terms used in this document generally have the ordinary meaning of each term used in this field, in the context of the case and in the specific context, unless otherwise noted. Certain terms used to describe the present invention will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present invention.

[0022] See attached Figure 1 As shown, a lifting device for carrying aluminum bars comprises a lifting ring 1, two groups of clamping assemblies spaced apart along the length direction of the aluminum bar, a connecting structure connecting the lifting ring 1 and the two groups of clamping assemblies at the same time, a first supporting rod 2, a second supporting rod 3 and a third supporting rod 4 which are arranged between the two groups of clamping assemblies and position and connect the two clamping assemblies; wherein the two groups of clamping assemblies are symmetrically arranged.

[0023] Both groups of the clamping assemblies include two cross-arranged and mutually hinged clamping arms 5, and each of the clamping arms 5 includes an integrally formed connecting rod 5a and an arc-shaped clamping claw 5b; wherein, the upper ends of the two connecting rods 5a in the first group of clamping assemblies are respectively hinged to the first ends of the first support rod 2 and the second support rod 3, and the upper ends of the two connecting rods 5a in the second group of clamping assemblies are respectively hinged to the second ends of the first support rod 2 and the second support rod 3; the lower ends of the two connecting rods 5a in the first group of clamping assemblies are simultaneously hinged to the first end of the third support rod 4, and the lower ends of the two connecting rods 5a in the second group of clamping assemblies are simultaneously hinged to the second end of the third support rod 4.

[0024] The lifting device is configured as follows: when the lifting ring 1 is pulled upward, the two pairs of jaws 5b in the two clamping assemblies are synchronously closed along the radial direction of the aluminum rod through the connecting structure; when the lifting ring 1 is pressed downward, the two pairs of jaws 5b in the two clamping assemblies are synchronously opened along the radial direction of the aluminum rod through the connecting structure.

[0025] The connecting structure can be a steel wire rope (not shown in the figure), one end of which is wound around the middle of the first support rod 2, and the other end of which is wound around the middle of the second support rod 3. The lifting ring is connected to the middle of the steel wire rope. When the lifting ring is pulled upward, both ends of the steel wire rope simultaneously pull the first support rod 2 and the second support rod 3 upward, so that the two support rods are relatively close to each other, thereby achieving the synchronous closure of the two pairs of jaws 5b in the two groups of clamping assemblies along the radial direction of the aluminum rod; when the pulling force on the lifting ring 1 is released or the lifting ring 1 is pressed downward, The two support rods are relatively opened, and the two pairs of jaws 5b in the two groups of clamping assemblies are synchronously opened along the radial direction of the aluminum rod. During the opening process, the jaws 5b will slide downward along the circumference of the aluminum rod, and open along the outer periphery of the aluminum rod while sliding downward. When the jaws 5b basically completely wrap the outer periphery of the aluminum rod, force is applied to pull the lifting ring 1 upward. During the pulling process, the two pairs of jaws 5b are relatively closed to clamp the outer periphery of the aluminum rod. Under the action of the weight of the aluminum rod, the two pairs of jaws 5b tightly clamp the aluminum rod to prevent it from falling off during the lifting process.

[0026] The connecting structure may also include two groups of rods and a fourth support rod 6 (see Figure 1), the fourth support rod 6 is arranged between the two groups of rods and positions and connects the two groups of rods, the two groups of rods are respectively arranged corresponding to the two groups of clamping assemblies, and each group of rods includes two push rods 7; the upper ends of the two push rods 7 in the first group of rods are simultaneously hinged to the first end of the fourth support rod 6, and the upper ends of the two push rods 7 in the second group of rods are simultaneously hinged to the second end of the fourth support rod 6; the lower ends of the two push rods 7 in the first group of rods are respectively hinged to the first ends of the first support rod 2 and the second support rod 3, and the lower ends of the two push rods 7 in the second group of rods are respectively hinged to the second ends of the first support rod 2 and the second support rod 3; the lifting ring 1 is fixed on the fourth support rod 6. When performing the lifting operation, first move the sling to the top of the aluminum rod, then drive the sling downward, and make the sling contact the aluminum rod and gradually place it on the aluminum rod. In this process, the aluminum rod gradually bears part or all of the weight of the sling, the lifting ring 1 gradually releases the pulling force on the fourth support rod 6 and generates downward pressure on the fourth support rod 6, the aluminum rod gradually bears part or all of the weight of the sling and generates an upward supporting force on the sling. Under the action of the above pressure and supporting force, the angle between each group of rods becomes larger, and each group of connected rods becomes larger. The angle between the rods becomes larger, and each pair of jaws 5b gradually opens. In the process of opening and moving downward, the jaws 5b gradually cover the outer periphery of the aluminum rod. When the outer periphery of the aluminum rod is basically completely covered, the lifting ring 1 is pulled upward. Under the action of the pulling force and the weight of the lifting ring 1, the angle between each group of rods becomes smaller, the angle between each group of connecting rods becomes smaller, and each pair of jaws 5b gradually closes and clamps the aluminum rod. In the process of clamping the aluminum rod, under the action of the weight of the aluminum rod, the jaws 5b clamp tighter and tighter, and the aluminum rod is not easy to fall off, thereby ensuring the safety and reliability of the lifting process.

[0027] In order to prevent the two groups of clamping components from moving on the support rods during the lifting process, thereby affecting the lifting process, the lifting device is also provided with a limiting structure for limiting the movement of the two groups of clamping components on the support rods. The limiting structure includes a limiting ring 8 sleeved on the support rods, and the limiting ring can be respectively arranged on the inner and outer sides of each group of clamping components; in addition, in order to strengthen the limiting effect of the limiting structure, a steel pipe 9 can also be sleeved on the third support rod, and the steel pipe 9 is located between the two groups of clamping components.

[0028] Because the aluminum rod to be hoisted is heavy, in order to match the weight of the aluminum rod and enhance the strength of the hoist, the clamping assembly, the connecting structure, the hoisting ring 1 and each of the supporting rods are made of steel.

[0029] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A sling for transporting aluminum bars, characterized by: It comprises a lifting ring (1), two groups of clamping assemblies arranged at intervals along the length direction of the aluminum rod, a connecting structure connecting the lifting ring (1) and the two groups of clamping assemblies at the same time, a first supporting rod (2), a second supporting rod (3) and a third supporting rod (4) arranged between the two groups of clamping assemblies and positioning and connecting the two clamping assemblies; wherein the two groups of clamping assemblies are symmetrically arranged; The two groups of clamping assemblies each comprise two clamping arms (5) which are cross-arranged and hinged to each other, and each of the clamping arms (5) comprises an integrally formed connecting rod (5a) and an arc-shaped clamping claw (5b); wherein the upper ends of the two connecting rods (5a) in the first group of clamping assemblies are respectively hinged to the first ends of the first support rod (2) and the second support rod (3), and the upper ends of the two connecting rods (5a) in the second group of clamping assemblies are respectively hinged to the second ends of the first support rod (2) and the second support rod (3); the lower ends of the two connecting rods (5a) in the first group of clamping assemblies are simultaneously hinged to the first end of the third support rod (4), and the lower ends of the two connecting rods (5a) in the second group of clamping assemblies are simultaneously hinged to the second end of the third support rod (4); The lifting device is configured such that: when the lifting ring (1) is pulled upward, two pairs of clamping jaws (5b) in two groups of clamping assemblies are synchronously closed along the radial direction of the aluminum rod through the connection structure; and when the lifting ring (1) is pressed downward, two pairs of clamping jaws (5b) in two groups of clamping assemblies are synchronously opened along the radial direction of the aluminum rod through the connection structure.

2. The sling for aluminum bar handling according to claim 1, characterized in that: The connection structure comprises two groups of rods and a fourth support rod (6) disposed between the two groups of rods and positioning and connecting the two groups of rods, the two groups of rods are respectively disposed corresponding to the two groups of clamping assemblies, and each group of rods comprises two push rods (7); The upper ends of the two push rods (7) in the first group of rods are simultaneously hinged to the first end of the fourth support rod (6), and the upper ends of the two push rods (7) in the second group of rods are simultaneously hinged to the second end of the fourth support rod (6); the lower ends of the two push rods (7) in the first group of rods are respectively hinged to the first ends of the first support rod (2) and the second support rod (3), and the lower ends of the two push rods (7) in the second group of rods are respectively hinged to the second ends of the first support rod (2) and the second support rod (3); The lifting ring (1) is fixedly mounted on the fourth supporting rod (6).

3. The sling for aluminum bar handling according to claim 2, characterized in that: The sling is also provided with a limiting structure for limiting the movement of the two groups of clamping assemblies on each supporting rod.

4. The sling for aluminum bar handling according to claim 3, characterized in that: The limiting structure comprises a limiting ring (8) sleeved on the support rod.

5. The sling for carrying aluminum bars according to claim 4, characterized in that: The limiting structure further comprises a set of steel pipes (9) arranged on the third support rod (4), and the steel pipes (9) are located between the two sets of clamping components.

6. The sling for aluminum bar handling according to claim 5, characterized in that: The clamping assembly, the connecting structure, the lifting ring (1) and each supporting rod are all made of steel material.

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