Core-pulling type hoisting clamp

Abstract

The core-pulling type hoisting clamp comprises a core-pulling body and a plurality of balance assemblies, the core-pulling body comprises a core rod and a core rod sleeve, the core rod is installed in the core rod sleeve, a plurality of hoisting points are evenly arranged on the upper portion of the core rod sleeve, and a plurality of clamping jaws are evenly arranged at the bottom of the core rod sleeve; the balance assembly comprises a balance beam, a clamping plate and a chain, and a plurality of adjusting holes are formed in the balance beam; a positive cone is arranged at the bottom of the core rod, a negative cone is connected below the positive cone, and a groove is formed between the positive cone and the negative cone; when the core rod sleeve of the core-pulling body ascends, the clamping plate can be driven to rotate, so that a hoisted object is clamped, the clamping plate and the core-pulling body form integral hard connection, the form and location tolerance during assembly and spot welding is ensured, and the stability of the hoisted object is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to hoist fixture technical field, concretely relates to a core-pulling type hoist fixture. BACKGROUND

[0002] In the manufacturing process of pressure vessel, flange pipe joints with different pipe diameters and weights are assembled and butt welded with the pressure vessel body, and the parallelism and perpendicularity of the flange pipe joints and the pressure vessel are not easy to control. Since the hoisting system is a soft link, when the flange pipe joints and the pressure vessel are fixed by spot welding, the welding stress causes the parallelism and perpendicularity of the flange pipe joints and the pressure vessel and the position and size of the flange pipe joints on the pressure vessel to be out of tolerance and to be displaced. SUMMARY

[0003] Therefore, the utility model hopes to provide a core-pulling type hoist fixture which can be self-locked in the load, automatically separated from the hoisted object by using the principle of heavy hammer when unloaded, and ensure the form and position tolerances during the assembly and spot welding of the flange pipe joints.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] The utility model provides a core-pulling type hoist fixture, including core-pulling body, a plurality of balance components, the core-pulling body includes core rod and core rod cover, the core rod top is installed in the core rod cover and the core rod with the core rod cover sliding connection, the upper portion of the core rod cover is uniformly equipped with a plurality of lifting points, and the bottom is uniformly equipped with a plurality of clamping claws;

[0006] The balance component includes balance beam, clamping plate and chain, and a plurality of adjusting holes are arranged on the balance beam.

[0007] The bottom of the core rod is provided with a positive cone, the positive cone is connected with a negative cone below, a groove is formed between the positive cone and the negative cone, the balance beam is connected with the negative cone, the two ends of the clamping plate are a connecting end and a clamping end respectively, the connecting end of the clamping plate is connected with one end of the chain, the middle part of the clamping plate is connected with the adjusting hole, the clamping end of the clamping plate penetrates through the balance beam and is located below the balance beam to clamp the hoisted object, the other end of the chain is connected with the lifting point, and a plurality of balance beams are evenly distributed on the negative cone.

[0008] Further, a lifting ring is further included, the top of the core rod cover is fixedly connected with a lifting ring, and the lifting ring is used for hanging with a carrying device.

[0009] Further, the number of clamping claws is three.

[0010] Further, the number of balance components is three, and the number of lifting points is the same as that of balance components.

[0011] The utility model has the advantages that:

[0012] (1) the utility model core body's core pole cover can drive the clamping plate to rotate when ascending, thereby clamping the hoisted object, the clamping plate and the core body form an integral hard connection, ensure the form and position tolerance when assembling, spot welding, ensure the stability of the hoisted object.

[0013] (2) the utility model utilizes the weight principle to realize automatic separation from the hoisted object when idle, simple operation, convenient and fast.

[0014] (3) the utility model is provided with a plurality of adjusting holes on the balance beam, can realize clamping flange pipes with different hole diameters, and is high in flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the core body formula hoisting clamp structure schematic diagram of the utility model embodiment;

[0016] Figure 2 It is the core body formula hoisting clamp lifting state structure schematic diagram of the utility model embodiment;

[0017] Among them: 1 is the core body, 2 is the balance assembly, 3 is the core pole, 4 is the core pole cover, 5 is the lifting point, 6 is the clamping jaw, 7 is the balance beam, 8 is the clamping plate, 81 is the connecting end, 82 is the clamping end, 9 is the chain, 10 is the adjusting hole, 11 is the positive cone, 12 is the reverse cone, 13 is the recess, 14 is the lifting ring. DETAILED DESCRIPTION

[0018] In order to be able to more detailedly understand the characteristics and technical contents of the utility model, the implementation of the utility model is described in detail below, the attached drawings are only for reference, and are not used to limit the utility model.

[0019] As Figures 1-2 Indicated, a kind of core body formula hoisting clamp includes core body 1, three balance assemblies 2, the core body 1 includes core pole 3 and core pole cover 4, the core pole 3 top is installed in the core pole cover 4 and the core pole 3 is slidably connected with the core pole cover 4, the upper portion of the core pole cover 4 is uniformly provided with three lifting points 5, and the bottom is uniformly provided with three clamping jaws 6;

[0020] The balance assembly 2 includes balance beam 7, clamping plate 8 and chain 9, the balance beam 7 is provided with a plurality of adjusting holes 10, and the two ends of the clamping plate 8 are respectively connecting end 81 and clamping end 82.

[0021] The core rod 3 has a positive cone 11 at its bottom, and a negative cone 12 is connected below the positive cone 11. A groove 13 is formed between the positive cone 11 and the negative cone 12. The balance beam 7 is connected to the negative cone 12. The connecting end 81 of the clamping plate 8 is connected to one end of the chain 9. The middle part of the clamping plate 8 is connected to the adjustment hole 10. The clamping end 82 of the clamping plate 8 passes through the balance beam 7 and is located below the balance beam 7 to clamp the suspended object. The other end of the chain 9 is connected to the lifting point 5. The three balance components 2 are evenly distributed on the negative cone 12.

[0022] The clamping plate 8 can be installed at different adjustment holes 10 to clamp flange pipes with different hole diameters.

[0023] The top of the core rod sleeve 4 is fixedly connected to a lifting ring 14, which is used to attach to the handling device.

[0024] Working principle: such as Figure 1 As shown, in the initial state, the gripper 6 is stuck in the groove 13, and the core rod 3 and core rod sleeve 4 of the core-pulling body 1 cannot move relative to each other. First, the core-pulling lifting fixture is perpendicular to the flange pipe opening of the object to be lifted, and a certain height is lifted. Then, the gripper 6 is manually pulled outward to disengage it from the groove 13. The lifting ring 14 is connected to the external handling device. At this time, the core rod sleeve 4 can be lifted under the action of external force. Then, the lifting continues, as... Figure 2 As shown, the core rod sleeve 4 of the core-pulling body 1 moves upward, the lifting point 5 drives the chain 9 to move, the chain 9 drives the connecting end 81 of the clamping plate 8 to move upward, and the clamping end 82 of the clamping plate 8 moves accordingly towards the inner wall of the object being lifted until the clamping end 82 is engaged with the inner wall of the object being lifted. At this time, the clamping plate 8 and the core-pulling body 1 form an integral hard connection, ensuring the form and position tolerance during assembly and spot welding. At this time, the object being lifted is lifted. When it is necessary to lower the object being lifted, the core rod sleeve 4 of the core-pulling body 1 moves downward, and the jaw 6 is engaged in the groove 13 under the guidance of the curved surface of the positive cone 11. The clamping plate 8 automatically disengages from the object being lifted using the principle of a counterweight.

[0025] When the core rod sleeve of this utility model rises, it drives the clamping plate to rotate, thereby clamping the suspended object. A rigid, integrated connection is formed between the clamping plate and the core puller, ensuring dimensional and positional tolerances during assembly and spot welding, and guaranteeing the stability of the suspended object. When unloaded, it automatically detaches from the suspended object using a counterweight principle, making operation simple, convenient, and quick. The balance beam of this utility model has multiple adjustment holes, allowing for clamping flange pipes of different diameters, providing high flexibility.

[0026] Here, the specific model of the above-mentioned device is not limited and described in detail, and the deep connection mode of the above-mentioned device is not described in detail, which can be understood by those skilled in the art as common knowledge.

[0027] The embodiments of the utility model only introduce the specific implementation, and do not limit the protection scope. The technical personnel in the industry can make some modifications under the enlightenment of the embodiment, so that equivalent changes or modifications made according to the utility model patent range all belong to the utility model patent claim range.

Claims

1. A core-drawing lifting clamp, characterized in that, The core-pulling body includes a core rod and a core rod sleeve, the core rod is mounted on the core rod sleeve and is in sliding connection with the core rod sleeve, the upper part of the core rod sleeve is uniformly provided with a plurality of lifting points, and the bottom of the core rod sleeve is uniformly provided with a plurality of clamping jaws; the balancing assembly includes a balancing beam, a clamping plate and a chain, and the balancing beam is provided with a plurality of adjusting holes; The bottom of the core rod is provided with a positive cone, the positive cone is connected with a negative cone below, a groove is formed between the positive cone and the negative cone, the balancing beam is connected with the negative cone, the two ends of the clamping plate are a connecting end and a clamping end respectively, the connecting end of the clamping plate is connected with one end of the chain, the middle part of the clamping plate is connected with the adjusting hole, the clamping end of the clamping plate penetrates through the balancing beam and is located below the balancing beam to clamp the lifted object, the other end of the chain is connected with the lifting point, and a plurality of balancing beams are uniformly distributed on the negative cone.

2. A core-pulling hoisting clamp according to claim 1, characterized in that The top of the core rod sleeve is fixedly connected with a lifting ring, and the lifting ring is used for hanging connection with a carrying device.

3. A core-pulling hoisting clamp according to claim 2, characterized in that The number of the clamping jaws is three.

4. A core-pulling hoisting clamp according to claim 3, characterized in that The number of the balancing assemblies is three, and the number of the lifting points is the same as that of the balancing assemblies.

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