Internal support lifting appliance

Abstract

The utility model provides an internal support lifting appliance, which comprises a sliding lantern ring, a plurality of internal support arms and a lifting rod, the plurality of internal support arms are annularly hinged to the periphery of the sliding lantern ring to form a conical structure capable of being freely opened, and the bottom of each support arm is provided with an anti-skidding piece used for being contacted with the inner wall of a tubular piece. An angle adjusting piece capable of making contact with each inner supporting arm is arranged at the bottom of the hanging rod, and in the process that the angle adjusting piece moves up and down along the sliding lantern ring along with the hanging rod, the angle adjusting piece makes contact with the inner supporting arms, the size of the conical structure is changed, and therefore the inner wall of the tubular piece is clamped and loosened by the anti-skid piece. According to the utility model, the size of the conical structure can be adjusted only by controlling the up-and-down movement of the angle adjusting part, so that the hoisting of the tubular part is realized. The inner support lifting appliance is convenient to disassemble and assemble, the tubular part is firmly fixed, the tubular part can be safely and efficiently lifted, and the operation efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sling equipment, in particular to an internal support sling. Background Art

[0002] At present, there are many tubular parts and similar parts that need to be transported in some construction sites, factories and machine repair workshops, such as motor stators, pipes, etc. Most of these tubular parts are metal components with relatively large mass, which are very bulky and inconvenient to transport. Most of the traditional transportation methods are to use wire ropes to bundle and transport or to weld lifting lugs on the components and then use wire ropes to connect and hoist them. Both methods have shortcomings. On the one hand, the wire ropes are not tied firmly and are easy to slip and cause safety accidents. On the other hand, welding lifting lugs wastes time and equipment and may also cause welding damage to the parts to be hoisted.

[0003] In order to solve the above problems, Chinese utility model patent CN217535183U discloses a large friction adaptive internal support hoisting device for tubular parts, including a fixed plate, a sliding hinge seat, a plurality of anti-skid clamps, a sliding rod and a plurality of hinged supports. The anti-skid clamps, connecting rods, sliding rods and connecting rods arranged between the anti-skid clamps and the sliding rods together constitute an inverted umbrella-shaped linkage mechanism, and a large friction force is obtained through the contact surface between the hoisting device and the inner wall of the pipe, and the inverted umbrella-shaped linkage mechanism is used to achieve adaptive adjustment to ensure the safety of pipe hoisting. However, this hoisting device has a complex structure, a high manufacturing cost, and is difficult to operate. Chinese utility model patent CN209957237U discloses a self-tensioning internal support hoist, including mutually cooperating lifting rings, upper hinges, hinged plates, movable claws and movable brackets. It can achieve reliable and safe gripping of workpieces only by gravity without other auxiliary accessories, and the operation is very simple and flexible. However, it is only suitable for pipe disc parts with through holes, and is not completely applicable to the hoisting of tubular parts. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides an inner support sling, which hinges a plurality of inner support arms along the circumferential direction on a sliding collar, so that the plurality of inner support arms are hinged around the sliding collar in a circular shape, forming a cone structure that can be freely opened, and the angle adjustment member contacts the inner support arms through the angle adjustment member during the process of following the lifting rod to move up and down along the sliding collar, changing the size of the cone structure, thereby achieving the clamping and loosening of the inner wall of the tubular member by the anti-slip member, so as to complete the lifting work of the tubular member. The inner support sling of the utility model is not only simple in structure, easy to operate, and low in cost, but also applicable to the lifting of various tubular members.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An internal support sling is used to extend into a tubular member to lift the tubular member, and the internal support sling comprises:

[0007] Sliding collar;

[0008] A plurality of inner support arms, the top of which is hinged on the sliding collar, and the bottom of which is provided with an anti-slip member for contacting the inner wall of the tubular member, and the plurality of inner support arms are hinged around the sliding collar in a ring shape to form a cone structure that can be freely opened; and

[0009] The suspension rod is installed in the sliding collar so as to be able to slide freely up and down, the top of which is provided with a suspension connection point, and the bottom of which is provided with an angle adjustment member capable of contacting each inner support arm, wherein the contact point between the angle adjustment member and each inner support arm forms a contact ring, and the diameter of the contact ring is greater than the diameter of the sliding collar;

[0010] When the angle adjusting member moves up and down along the sliding collar following the suspension rod, the angle adjusting member contacts the inner support arm to change the size of the conical structure, thereby achieving the clamping and loosening of the inner wall of the tubular member by the anti-slip member.

[0011] Furthermore, the contact surface between the angle adjustment member and the inner support arm is a curved surface.

[0012] Furthermore, a limit block is arranged on the top of the suspension rod, and the lifting connection point is a lifting ring installed on the top of the limit block.

[0013] Furthermore, a plurality of first hinge seats are circumferentially arranged on the outer wall of the sliding collar, and the top of each inner support arm is hinged to the corresponding first hinge seat.

[0014] Furthermore, the sizes of the limit block and are both larger than the inner diameter of the sliding ring.

[0015] Furthermore, the angle adjustment member is a truncated cone-shaped plate with arc-shaped sides.

[0016] Furthermore, the anti-slip member is an anti-slip clamping strip, and the anti-slip clamping strip is provided with a second hinged seat hinged to the bottom of the inner support arm.

[0017] Furthermore, a side of the anti-slip clamping strip close to the inner wall of the tubular member is in a blunt tooth shape.

[0018] Furthermore, the anti-slip clamp strip is a rubber clamp strip.

[0019] Furthermore, the number of the inner support arms is 3, and the 3 inner support arms are hinged on the corresponding first hinge seats at equal intervals along the circumferential direction.

[0020] The beneficial effects of the utility model are:

[0021] 1. The utility model has a simple structure and is easy to operate. The opening and closing angles of all inner support arms, that is, the size of the conical structure, can be adjusted by only controlling the up and down movement of the angle adjustment member, thereby realizing the installation of the inner support hanger, the lifting of the tubular member, and the disassembly of the inner support hanger. Before lifting the tubular part, lower the height of the lifting rod so that the angle adjustment part abuts against the lower part of the inner support arm, close all the inner support arms, reduce the size of the tapered structure, and extend the inner support hanger into the tubular part. Then raise the height of the lifting rod so that the angle adjustment part opens the inner support arm and increases the size of the tapered structure until all the anti-skid clamps fit tightly against the inner wall of the tubular part, so that the inner support hanger firmly supports the inner wall of the tubular part, and the installation of the inner support hanger is realized. After confirming that the lifting is safe and stable, lift the tubular part to the designated position through the lifting equipment to complete the lifting of the tubular part. Then lower the height of the lifting rod so that all the inner support arms close, reduce the size of the tapered structure, separate the anti-skid clamps from the inner wall of the tubular part, and take the inner support hanger out of the tubular part. The inner support hanger of the utility model is easy to assemble and disassemble, and can fix the tubular part firmly. It can lift the tubular part safely and efficiently, greatly improving the working efficiency.

[0022] 2. The utility model utilizes the lever principle. Under the action of its own gravity, the tubular part makes the anti-skid clamp firmly support and clamp the inner wall of the tubular part. And when the weight of the tubular part is greater, the force of the angle adjustment part on the inner support arm is greater, the force transmitted to the anti-skid clamp is greater, and the friction force acting on the inner wall of the tubular part is greater, that is, the anti-skid clamp clamps the tubular part more firmly, so that the tubular part can be safely and efficiently transported to the designated location, which greatly improves the working efficiency, reduces the labor cost, and can bring economic benefits to the enterprise.

[0023] 3. By setting the contact surface between the angle adjustment piece and the inner support arm as an arc surface, the angle adjustment piece and the inner support arm can be in surface contact, thereby increasing the contact area and realizing the opening and closing of the inner support arm more stably and labor-savingly; by setting the side of the anti-slip clamp close to the inner wall of the tubular piece to a blunt-edged tooth shape, it can be ensured that the contact surface between the anti-slip clamp and the inner wall of the pipe obtains a greater friction force, and the inner wall of the pipe is firmly grasped by friction to prevent it from sliding and falling off, thereby ensuring the safety of pipe lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of an internal support hanger of the utility model;

[0025] Figure 2 It is a structural schematic diagram of the utility model suspension rod;

[0026] Figure 3 This is a schematic diagram of the installation structure of the inner support arm of the utility model;

[0027] Figure 4The utility model is a schematic diagram of the use state of an internal support hanger.

[0028] Reference numerals:

[0029] 1-sliding collar, 2-inner support arm, 3-anti-slip clamp strip, 4-hanging rod, 5-angle adjustment piece, 6-limiting block, 7-hanging ring, 8-first hinge seat, 9-second hinge seat, 10-tubular piece. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] like Figures 1 to 4 As shown, the utility model provides an internal support hanger, which is used to extend into the tubular member 10 to lift the tubular member 10, and the internal support hanger includes:

[0034] Sliding collar 1;

[0035] A plurality of inner support arms 2, the top of which is hinged on the sliding collar 1, and the bottom of which is provided with an anti-slip member for contacting the inner wall of the tubular member 10, and the plurality of inner support arms 2 are hinged around the sliding collar 1 in a ring shape to form a cone structure that can be freely opened; and

[0036] The suspension rod 4 is installed in the sliding collar 1 so as to be able to slide freely up and down, and is provided with a suspension connection point at the top and an angle adjustment member 5 that can contact each inner support arm 2 at the bottom. The contact point between the angle adjustment member 5 and each inner support arm 2 forms a contact ring, and the diameter of the contact ring is greater than the diameter of the sliding collar 1;

[0037] When the angle adjusting member 5 follows the suspension rod 4 and moves up and down along the sliding collar 1 , the angle adjusting member 5 contacts the inner support arm 2 to change the size of the conical structure, thereby achieving the clamping and loosening of the inner wall of the tubular member 10 by the anti-slip member.

[0038] The utility model has a simple structure and is easy to operate. It only needs to control the up and down movement of the angle adjustment member 5 to adjust the opening and closing angles of all the inner support arms 2, that is, to adjust the size of the conical structure, so as to achieve the installation of the inner support hanger, the lifting of the tubular member 10 and the removal of the inner support hanger. Figure 1 and Figure 4 As shown, before lifting the tubular member 10, the height position of the suspension rod 4 is lowered so that the angle adjustment member 5 is in contact with the lower part of the inner support arm 2, so that all the inner support arms 2 are retracted, the size of the conical structure is reduced, and the inner support hanger is extended into the tubular member 10, and then the height position of the suspension rod 4 is raised so that the angle adjustment member 5 opens the inner support arm 2 and the size of the conical structure is increased until all the anti-slip clamps 3 are tightly fitted with the inner wall of the tubular member 10, so that the inner support hanger firmly supports the inner wall of the tubular member 10, and the installation of the inner support hanger is realized; after confirming that the lifting is safe and stable, the tubular member 10 is lifted to the specified position by the lifting equipment to complete the lifting of the tubular member 10; then the height position of the suspension rod 4 is lowered so that all the inner support arms 2 are retracted, the size of the conical structure is reduced, and the anti-slip clamps 3 are separated from the inner wall of the tubular member 10, and the inner support hanger is taken out from the tubular member 10. The internal support hanger of the utility model is convenient to assemble and disassemble, and can fix the tubular member 10 firmly, so the tubular member 10 can be lifted safely and efficiently, thereby greatly improving the working efficiency.

[0039] The utility model utilizes the lever principle. Under the action of its own gravity, the tubular member 10 makes the anti-skid clamp 3 firmly support and clamp the inner wall of the tubular member 10. When the sliding collar 1 is located at the bottom position of the suspension rod 4, the angle between the inner support arm 2 and the suspension rod 4 is 20° to 45°, preferably 30°, so as to improve the effect of the lever action. And when the weight of the tubular member 10 is greater, the force of the angle adjustment member 5 on the inner support arm 2 is greater, the force transmitted to the anti-skid clamp 3 is greater, and the friction force acting on the inner wall of the tubular member 10 is greater, that is, the anti-skid clamp 3 clamps the tubular member 10 more firmly, thereby safely and efficiently transporting the tubular member 10 to the designated position, greatly improving the working efficiency, reducing the labor cost, and bringing economic benefits to the enterprise.

[0040] In some embodiments, Figure 2 As shown, the contact surface between the angle adjustment member 5 and the inner support arm 2 is an arc surface. By setting the contact surface between the angle adjustment member 5 and the inner support arm 2 as an arc surface, the angle adjustment member 5 and the inner support arm 2 can be in surface contact, which can increase the contact area compared to line contact, and can realize the opening and closing of the inner support arm 2 more stably and labor-saving. As a preferred embodiment, the angle adjustment member 5 is a truncated cone plate with arc-shaped sides.

[0041] In some embodiments, Figure 3 As shown, the outer wall of the sliding collar 1 is provided with a plurality of first hinge seats 8 along the circumferential direction, and the top of each inner support arm 2 is hinged on the corresponding first hinge seat 8. Specifically, the inner diameter of the sliding collar 1 is slightly larger (2-5 mm larger) than the outer diameter of the suspension rod 4, so that the sliding support and the suspension rod 4 can slide relative to each other along the axial direction of the suspension rod 4. Three first hinge seats 8 are provided at equal intervals along the circumferential direction on the outer wall of the sliding collar 1, and the number of the inner support arms 2 is also set to three, and the tops of the three inner support arms 2 are respectively hinged on the corresponding first hinge seats 8.

[0042] In some embodiments, Figure 2 As shown, a limit block 6 is provided at the top of the suspension rod 4, and the lifting connection point is a lifting ring 7 installed on the top of the limit block 6. The sizes of the limit block 6 and the angle adjustment member 5 are both larger than the inner diameter of the sliding collar 1. The limit block 6 not only provides a mounting base for the lifting ring 7, but also limits the sliding range of the sliding support, so that the sliding support can only slide on the suspension rod 4 and cannot be separated from the suspension rod 4.

[0043] In some embodiments, Figure 3 As shown, the anti-skid member is an anti-skid clip 3, and a second hinge seat 9 is provided on the side of the anti-skid clip 3 close to the suspension rod 4, and each anti-skid clip is hinged to the bottom of the inner support arm 2 through the second hinge seat 9. The anti-skid clip 3 is made of rubber material, and the side of the anti-skid clip 3 close to the inner wall of the tubular member 10 is blunt-toothed, which can ensure that the contact surface between the anti-skid clip 3 and the inner wall of the pipe has a large friction force, and the inner wall of the pipe is firmly grasped by friction to prevent it from sliding off, thereby ensuring the safety of pipe hoisting.

[0044] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not deviate from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. An internal support sling, used to extend into a tubular member to lift the tubular member, characterized in that: The inner support hanger comprises: Sliding collar; A plurality of inner support arms, the top of which is hinged on the sliding collar, and the bottom of which is provided with an anti-slip member for contacting the inner wall of the tubular member, and the plurality of inner support arms are hinged around the sliding collar in a ring shape to form a cone structure that can be freely opened; and The suspension rod is installed in the sliding collar so as to be able to slide freely up and down, the top of which is provided with a suspension connection point, and the bottom of which is provided with an angle adjustment member capable of contacting each inner support arm, wherein the contact point between the angle adjustment member and each inner support arm forms a contact ring, and the diameter of the contact ring is greater than the diameter of the sliding collar; When the angle adjusting member moves up and down along the sliding collar following the suspension rod, the angle adjusting member contacts the inner support arm to change the size of the conical structure, thereby achieving the clamping and loosening of the inner wall of the tubular member by the anti-slip member.

2. An internal support hanger according to claim 1, characterized in that: The contact surface between the angle adjustment member and the inner support arm is a curved surface.

3. An internal support hanger according to claim 2, characterized in that: A limit block is arranged on the top of the suspension rod, and the lifting connection point is a lifting ring installed on the top of the limit block.

4. An internal support hanger according to claim 3, characterized in that: The outer wall of the sliding collar is provided with a plurality of first hinge seats along the circumferential direction, and the top of each inner support arm is hinged on the corresponding first hinge seat.

5. An internal support hanger according to claim 4, characterized in that: The sizes of the limit block and are both larger than the inner diameter of the sliding ring.

6. An internal support hanger according to claim 2, characterized in that: The angle adjusting member is a truncated cone-shaped plate with arc-shaped sides.

7. The internal support hanger according to claim 1, characterized in that: The anti-slip part is an anti-slip clamping strip, and the anti-slip clamping strip is provided with a second hinged seat hinged to the bottom of the inner support arm.

8. An internal support hanger according to claim 7, characterized in that: The side of the anti-slip clamping strip close to the inner wall of the tubular member is in a blunt tooth shape.

9. An internal support hanger according to claim 8, characterized in that: The anti-slip clamp strip is a rubber clamp strip.

10. An internal support hanger according to claim 4, characterized in that: The number of the inner support arms is 3, and the 3 inner support arms are hinged on the corresponding first hinge seats at equal intervals along the circumferential direction.

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