Sheath lifting appliance

Abstract

The utility model provides a sheath lifting appliance, which belongs to the technical field of lifting tools and comprises a main support, a plurality of adjusting arms are radially arranged in the circumferential direction of the main support, the adjusting arms have degrees of freedom extending or shortening along the length direction of the adjusting arms, clamping jaws are arranged at the tail ends of the adjusting arms, and bearing parts extending outwards are arranged at the lower ends of the clamping jaws. A supporting surface is formed on the upper end surface of the supporting part, a connecting part extending upwards is arranged at the upper end of the clamping jaw, a rotating part is connected to the connecting part, the middle of the rotating part is hinged to the connecting part, a pressing surface is arranged at one end of the outer side of the rotating part, hoisting chains are connected to one end of the inner side of the rotating part, and the upper ends of the multiple hoisting chains are jointly connected with a hoisting ring. The sheath lifting appliance provided by the utility model can be used for stably lifting a sheath of a slurry pump, is convenient to operate and avoids potential safety hazards.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting tools, and more specifically relates to a sheath lifting device. Background Art

[0002] Slurry pump is a kind of pump used to transport thick liquid containing solid particles (such as ore pulp, tailings, mud, etc.). Slurry pump is widely used in mining, chemical industry, environmental protection, construction and other industries. It usually consists of pump body, jacket, impeller, bearing, sealing device and driving device (such as motor).

[0003] The slurry pump jacket is an important part of the slurry pump. Its main function is to protect the pump body and prevent the pump body from being worn and corroded in a harsh working environment. The jacket is usually located at the inlet and outlet of the pump and is the part that is in direct contact with the fluid.

[0004] When lifting and packing the slurry pump jacket, iron chains are usually passed through the inside of the jacket or channel steel is used to support the jacket. The use of iron chains and channel steel to lift the jacket has poor stability, inconvenience in operation and potential safety hazards. Utility Model Content

[0005] The utility model aims to provide a sheath hoist, aiming to solve the problem that the conventional hoisting method of the sheath of a slurry pump leads to poor stability of the sheath, inconvenient operation and potential safety hazards.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a sheath hanger, including a main bracket, a plurality of adjusting arms are radially arranged in the circumference of the main bracket, the adjusting arms have the freedom to extend or shorten along their own length direction, a claw is arranged at the end of the adjusting arm, the lower end of the claw is provided with a supporting portion extending outward, the upper end surface of the supporting portion forms a supporting surface, the upper end of the claw is provided with a connecting portion extending upward, a rotating portion is connected to the connecting portion, the middle part of the rotating portion is hinged to the connecting portion, the outer end of the rotating portion has a clamping surface, the inner end of the rotating portion is connected to a lifting chain, and the upper ends of the plurality of lifting chains are commonly connected to a lifting ring.

[0007] In one possible implementation, the adjusting arm includes an inner threaded rod, an outer threaded rod and an inner threaded coil, the inner end of the inner threaded rod is connected to the main bracket, the outer end of the outer threaded rod is connected to the claw, the inner threaded rod and the outer threaded rod have opposite rotation directions, the inner threaded coil is threadedly sleeved on the inner threaded rod and the outer threaded rod, and the inner threaded coil rotates to drive the outer threaded rod to move outward or inward.

[0008] In a possible implementation, the inner threaded rod and the main bracket are integrally formed, and the outer threaded rod and the claw are integrally formed.

[0009] In a possible implementation, the outer contour of the internally threaded coil is a prismatic structure.

[0010] In a possible implementation, an inclined mating surface is provided on the outer side of the claw, the inclined mating surface is inclined inward from top to bottom, and the lower end of the inclined mating surface extends to the supporting surface.

[0011] In a possible implementation, the supporting surface is a horizontal surface, and the pressing surface is an arc-shaped surface.

[0012] In a possible implementation, a plurality of anti-slip edges are provided on the pressing surface.

[0013] In a possible implementation, the rotating portion and the connecting portion are hingedly matched via a pin bolt.

[0014] In a possible implementation, shackles are respectively provided at both ends of the lifting chain, the lower end of the lifting chain is hinged to the rotating part through the shackle, and the upper end of the lifting chain is hinged to the lifting ring through the shackle.

[0015] In a possible implementation, the number of the adjustment arms is three, and the three adjustment arms are radially and evenly arranged in the circumference of the main support.

[0016] The utility model provides a sheath hanger with the beneficial effect that: compared with the prior art, the multiple adjustment arms of the main bracket circumferentially can be extended or shortened, thereby driving the claws at the end thereof to be retracted inward or extended outward. The claws are provided with a supporting portion and a connecting portion, the supporting portion forms a supporting surface, a rotating portion is hinged on the connecting portion, and one end of the outer side of the rotating portion is provided with a pressing surface, the lower end of each lifting chain is connected to a rotating portion, and the upper ends of multiple lifting chains are commonly connected with a lifting ring. When using the sheath hanger provided by the utility model, firstly shorten the multiple adjustment arms so that the multiple claws enter the flow channel of the sheath at the same time, the outer side of the claws is opposite to the edge of the water inlet of the sheath, extend the multiple adjustment arms, the supporting portion of the claws is clamped on the inner side of the water inlet of the sheath, and the lifting equipment uses a hook to hang the lifting ring for lifting. As the lifting chain is gradually tightened, the supporting surface of the supporting portion abuts against the inner side of the water inlet of the sheath, and the pressing surface of the outer end of the rotating portion is gradually pressed against the outer side of the water inlet of the sheath. The utility model provides a sheath lifting device, which can stably lift the sheath of a slurry pump, is easy to operate and avoids potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of a sheath hanger provided by the utility model;

[0019] Figure 2 The utility model is provided with a sheath hanger in use state diagram.

[0020] Description of reference numerals:

[0021] 1. Main bracket; 2. Inner threaded rod; 3. Outer threaded rod; 4. Inner threaded spiral tube; 5. Claw; 510. Supporting part; 511. Supporting surface; 520. Connecting part; 530. Inclined matching surface; 6. Rotating part; 610. Clamping surface; 7. Lifting chain; 8. Lifting ring; 9. Pin bolt; 10. Shackle. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0024] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the utility model.

[0025] See also Figure 1 and Figure 2Now, a sheath hanger provided by the utility model is described. A sheath hanger comprises a main support 1, a plurality of adjustment arms are radially arranged on the circumference of the main support 1, the adjustment arms have the freedom to extend or shorten along their own length direction, a clamping claw 5 is arranged at the end of the adjustment arm, a supporting portion 510 extending outward is arranged at the lower end of the clamping claw 5, a supporting surface 511 is formed on the upper end surface of the supporting portion 510, a connecting portion 520 extending upward is arranged at the upper end of the clamping claw 5, a rotating portion 6 is connected to the connecting portion 520, the middle part of the rotating portion 6 is hinged to the connecting portion 520, the outer end of the rotating portion 6 has a pressing surface 610, the inner end of the rotating portion 6 is connected to a lifting chain 7, and the upper ends of the plurality of lifting chains 7 are commonly connected to a lifting ring 8.

[0026] The utility model provides a sheath lifting device. Compared with the prior art, the main support 1 has multiple circumferential adjustment arms that can be extended or shortened, thereby driving the claw 5 at the end thereof to be retracted inward or extended outward. The claw 5 has a supporting portion 510 and a connecting portion 520. The supporting portion 510 forms a supporting surface 511. The connecting portion 520 is hinged with a rotating portion 6. The outer end of the rotating portion 6 has a pressing surface 610. The lower end of each lifting chain 7 is connected to a rotating portion 6. The upper ends of multiple lifting chains 7 are commonly connected to a lifting ring 8. When using the sheath lifting device provided by the utility model, first shorten multiple adjustment arms so that multiple claws 5 can enter the flow channel of the sheath at the same time, the outer side of the claws 5 is opposite to the edge of the water inlet of the sheath, extend multiple adjustment arms, the supporting part 510 of the claws 5 is clamped on the inner side of the water inlet of the sheath, and the lifting equipment uses a hook to hang the lifting ring 8 for lifting. As the lifting chain 7 is gradually tightened, the supporting surface 511 of the supporting part 510 abuts against the inner side of the water inlet of the sheath, and the pressing surface 610 at one end of the outer side of the rotating part 6 is gradually pressed against the outer side of the water inlet of the sheath. The sheath lifting device provided by the utility model can complete the stable lifting of the sheath of the slurry pump, is easy to operate and avoids safety hazards.

[0027] The rotating part 6 is a rotating plate, and the middle part of the rotating plate is hinged to the connecting part 520. The supporting part 510 and the connecting part 520 are both integrally formed with the claw 5, and are both part of the structure of the claw 5.

[0028] See also Figure 1The adjusting arm comprises an inner threaded rod 2, an outer threaded rod 3 and an inner threaded spiral tube 4. An inner end of the inner threaded rod 2 is connected to the main bracket 1, and an outer end of the outer threaded rod 3 is connected to a claw 5. The outer thread of the inner threaded rod 2 and the outer threaded rod 3 have opposite rotation directions. The inner threaded spiral tube 4 is threadedly sleeved on the inner threaded rod 2 and the outer threaded rod 3. The inner threaded spiral tube 4 rotates to drive the outer threaded rod 3 to move outward or inward, thereby realizing the extension or shortening of the adjusting arm in its length direction, which can ensure that multiple claws 5 can move inward at the same time into the flow channel of the sheath, and can also enable multiple claws 5 to move outward at the same time and be stuck in the circumference of the water inlet of the sheath.

[0029] Specifically, the inner threaded rod 2 and the main bracket 1 are integrally formed, and the outer threaded rod 3 and the claw 5 are integrally formed, which ensures that the inner threaded rod 2 and the main bracket 1 have sufficient structural strength, and also ensures that the outer threaded rod 3 and the claw 5 have sufficient structural strength.

[0030] Preferably, the outer contour of the internally threaded coil 4 is a prismatic structure, which is convenient for operators to grip the outer contour of the internally threaded coil 4 and rotate it. For example, the outer contour of the internally threaded coil 4 is a hexagonal prism.

[0031] An inclined mating surface 530 is provided on the outer side of the claw 5, and the inclined mating surface 530 is inclined inward from top to bottom. The above-mentioned inclined mating surface 530 is consistent with the edge contour of the water inlet of the sleeve. The lower end of the inclined mating surface 530 extends to the supporting surface 511, and the supporting surface 511 and the inclined mating surface 530 form an angle, which is adapted to the shape of the water inlet of the sleeve to avoid collision between the inner side of the claw 5 and the edge of the water inlet of the sleeve when lifting the sleeve.

[0032] In addition, the supporting surface 511 is a horizontal surface, and the pressing surface 610 is an arc-shaped surface. Preferably, the pressing surface 610 is provided with a plurality of anti-skid edges, which can increase the friction between the pressing surface 610 and the outer side of the water inlet of the sheath. In addition, an elastic protective layer can also be provided on the pressing surface 610, which can increase the friction between the pressing surface 610 and the outer side of the water inlet of the sheath, and effectively protect the outer side of the water inlet of the sheath, reducing the possibility of bumps and scratches.

[0033] Specifically, the rotating part 6 and the connecting part 520 are hingedly matched by a pin bolt 9. Shackles 10 are respectively provided at both ends of the lifting chain 7, the lower end of the lifting chain 7 is hingedly connected to the rotating part 6 by the shackle 10, and the upper end of the lifting chain 7 is hingedly connected to the lifting ring 8 by the shackle 10.

[0034] Preferably, the number of the adjusting arms is three, and the three adjusting arms are evenly arranged radially around the main support 1. Similarly, the number of the claws 5, the rotating part 6 and the lifting chain are all three.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sheath hanger, characterized in that: The invention comprises a main support (1), wherein a plurality of adjusting arms are radially arranged in the circumference of the main support (1), wherein the adjusting arms have the freedom to extend or shorten along their own length direction, and a clamping claw (5) is arranged at the end of the adjusting arm, and a supporting portion (510) extending outward is arranged at the lower end of the clamping claw (5), and the upper end surface of the supporting portion (510) forms a supporting surface (511), and a connecting portion (520) extending upward is arranged at the upper end of the clamping claw (5), and a rotating portion (6) is connected to the connecting portion (520), and the middle part of the rotating portion (6) is hinged to the connecting portion (520), and the outer end of the rotating portion (6) has a pressing surface (610), and the inner end of the rotating portion (6) is connected to a lifting chain (7), and the upper ends of a plurality of the lifting chains (7) are commonly connected to a lifting ring (8).

2. A sheath hanger as claimed in claim 1, characterized in that: The adjusting arm comprises an inner threaded rod (2), an outer threaded rod (3) and an inner threaded rotary tube (4); an inner end of the inner threaded rod (2) is connected to the main bracket (1), and an outer end of the outer threaded rod (3) is connected to the clamping claw (5); the inner threaded rod (2) and the outer threaded rod (3) have opposite rotation directions; the inner threaded rotary tube (4) is threadedly sleeved on the inner threaded rod (2) and the outer threaded rod (3); the inner threaded rotary tube (4) rotates to drive the outer threaded rod (3) to move outward or inward.

3. A sheath hanger as claimed in claim 2, characterized in that: The inner threaded rod (2) and the main bracket (1) are integrally formed, and the outer threaded rod (3) and the clamping claw (5) are integrally formed.

4. A sheath hanger as claimed in claim 2, characterized in that: The outer contour of the internally threaded spiral tube (4) is a prismatic structure.

5. A sheath hanger as claimed in claim 1, characterized in that: An inclined mating surface (530) is provided on the outer side of the clamping claw (5), and the inclined mating surface (530) is inclined inward from top to bottom, and the lower end of the inclined mating surface (530) extends to the supporting surface (511).

6. A sheath hanger as claimed in claim 1, characterized in that: The supporting surface (511) is a horizontal surface, and the pressing surface (610) is an arc-shaped surface.

7. A sheath hanger as claimed in claim 6, characterized in that: The pressing surface (610) is provided with a plurality of anti-slip edges.

8. A sheath hanger as claimed in claim 1, characterized in that: The rotating portion (6) and the connecting portion (520) are hingedly matched via a pin bolt (9).

9. A sheath hanger as claimed in claim 1, characterized in that: Both ends of the lifting chain (7) are provided with shackles (10), the lower end of the lifting chain (7) is hinged to the rotating part (6) through the shackle (10), and the upper end of the lifting chain (7) is hinged to the lifting ring (8) through the shackle (10).

10. A sheath hanger as claimed in claim 1, characterized in that: The number of the adjustment arms is three, and the three adjustment arms are evenly arranged radially in the circumference of the main support (1).

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