CN210029758U

CN210029758U - Internal-supporting type lifting appliance for graphite crucible

Info

Publication number: CN210029758U
Application number: CN201920792509.2U
Authority: CN
Inventors: 史勇; 徐亮兵; 史强; 周怡; 来光祖; 陈兵
Original assignee: Hubei Sanjiang Aerospace Wanfeng Technology Development Co Ltd
Current assignee: Hubei Sanjiang Aerospace Wanfeng Technology Development Co Ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-02-07
Anticipated expiration: 2029-05-29

Abstract

The utility model provides an internal supporting type lifting appliance for graphite crucible, which comprises a lifting ring and a lifting rod, wherein the lower part of the lifting ring is connected with the lifting rod, the lifting rod is a long screw rod, and an internal supporting frame is arranged on the lifting rod; the inner supporting frame comprises a sliding sleeve sleeved on the suspension rod and a support fixed at the lower end of the suspension rod, a spring is arranged on the suspension rod between the sliding sleeve and the support, the upper ends of the three upper supporting rods are hinged on the sliding sleeve in an equicircumferential angle distribution, the lower ends of the three upper supporting rods are hinged with the upper parts of the three lower supporting rods, supporting claws are arranged at the upper ends of the three lower supporting rods, and the lower ends of the three lower supporting rods are hinged on the support in an equicircumferential angle distribution; a nut adjusting block is arranged on the suspender at the upper part of the sliding sleeve. The utility model has the advantages of simple and reasonable structure, the clamping is convenient, only need through the swivel nut regulating block alright make the supporting claw prop tight crucible after putting into the crucible with the hoist, the crucible of the applicable various internal diameters in position of regulating nut regulating block, convenient operation, and low in manufacturing cost has fine popularization and application and worth.

Description

Internal-supporting type lifting appliance for graphite crucible

Technical Field

The utility model belongs to the hoist field relates to crucible hoisting technology equipment, specifically indicates a graphite crucible of internal stay formula hoist for.

Background

The aluminum alloy has a series of advantages of low density, high specific strength, good corrosion resistance and the like, and is widely applied, particularly in the fields of aerospace, national defense and military industry and the like. For parts with complicated shapes, high-performance aluminum alloy is mostly cast and molded. In the process of smelting aluminum alloy, a cast steel crucible or a graphite crucible is generally used, when the cast steel crucible is used for smelting, iron in the crucible is easy to dissolve in the aluminum alloy, the performance of the aluminum alloy is reduced, the graphite crucible only contains carbon, chemical components are stable, the graphite crucible cannot react with the aluminum alloy, the content of iron can be prevented from being increased during smelting, and meanwhile, the graphite crucible has the characteristics of strong heat conductivity and good corrosion resistance, so that the graphite crucible is mostly used for smelting aluminum alloy castings with higher performance requirements.

In actual production, the crucible is heavy, so that the crucible is generally hoisted by a crane, and hoisting points are needed on the crucible during hoisting. The cast steel crucible can be hoisted by drilling holes at the edge of the crucible and installing hoisting rings, and the graphite crucible cannot be hoisted by adopting the mode due to large hardness and brittleness and needs to be hoisted by adopting a special hoisting tool. At present, no more perfect hoisting method exists for the graphite crucible. At normal temperature, the fiber woven belts can be used for binding and hoisting, and the crucible is placed in the hearth, but the woven belts are used for hoisting, so that the hoisting tool can be used only at normal temperature and cannot be used for hoisting at hot and high temperature. Because the temperature of the crucible is about 800 ℃ generally when the cast aluminum alloy is smelted, the crucible cannot be lifted out of the hearth by using the lifting appliance. The operation can be carried out after the furnace chamber is cooled after the waiting time is more than 10 hours, which greatly influences the production efficiency. Therefore, the special lifting appliance made of the metal material can lift the graphite crucible at normal temperature and high temperature, and has large market demand.

At present, the existing metal lifting appliance generally uses three (or two) clamping jaws to fix the outer wall of a crucible for lifting, the lifting mode for clamping the outer wall of the crucible has great limitation, the required working space is large, the metal lifting appliance can only be used in transportation, and the metal lifting appliance is not suitable for lifting the crucible in a hearth.

Disclosure of Invention

The utility model aims at designing an internal stay formula hoist for graphite crucible, it is convenient to make it have clamping and loading and unloading, and safe and reliable's characteristics in the hoist and mount process satisfy and use under normal atmospheric temperature, the high temperature state, can effectual improvement production efficiency.

The technical scheme of the utility model is that: the utility model discloses an internal supporting type hanger for graphite crucible, which comprises a hanging ring and a hanging rod, wherein the lower part of the hanging ring is connected with the hanging rod, the hanging rod is a long screw rod, and an internal supporting frame is arranged on the hanging rod; the inner supporting frame comprises a sliding sleeve sleeved on the suspension rod and a support fixed at the lower end of the suspension rod, the suspension rod between the sliding sleeve and the support is supported by a spring, the upper ends of the three upper supporting rods are hinged on the sliding sleeve in an equicircumferential angle distribution, the lower ends of the three upper supporting rods are hinged with the upper parts of the three lower supporting rods, supporting claws are arranged at the upper ends of the three lower supporting rods, and the lower ends of the three lower supporting rods are hinged on the support in an equicircumferential angle distribution; a nut adjusting block is arranged on the suspender at the upper part of the sliding sleeve.

The working surface of the supporting claw is matched with the inner edge of the graphite crucible, and the working surface is provided with an anti-skid groove.

The inner diameter of the spring is 3-5 mm larger than the major diameter of the suspender, and the spring can freely move on the suspender.

The three upper supporting rods and the three lower supporting rods have the same length, and the sum of the lengths of the upper supporting rods and the lower supporting rods is the same as the length of the hanging rods.

The utility model has the advantages that:

(1) the clamping is convenient, after the lifting appliance is placed into the crucible, the supporting claw can tightly support the crucible only by rotating the nut adjusting block, and the position of the nut adjusting block can be suitable for crucibles with various inner diameters.

(2) The disassembly is convenient, after the crucible is hung to the designated position, the nut adjusting block is rotated, the spring rebounds to enable the sliding sleeve to move upwards, and the supporting claw is folded.

(3) The safety is good, and it has anti-skidding groove to open on the support claw, has increased the frictional force between support claw and the crucible wall, can effectually avoid only having several high points to contact between support claw and the crucible wall simultaneously.

(4) The parts have simple structure, convenient manufacture and low cost.

The utility model discloses a hoist for graphite crucible then props at the crucible inner wall through supporting the claw and lifts by crane tightly, uses when not only being applicable to the transportation, also is fit for installing the handling crucible in furnace, need not consider furnace and crucible outside clearance's size, also can use when the crucible is high temperature hot state simultaneously, the requirement of satisfying the production progress that can be better has fine using value.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic top view of fig. 1.

Detailed Description

The invention is described in further detail below with reference to the following figures and specific examples:

fig. 1 and 2 show an embodiment of an internally supporting hanger for a graphite crucible, which comprises a hanging ring, a hanging rod, an internally supporting frame, a spring, a supporting claw and a nut adjusting block, wherein the lower part of the hanging ring 1 is connected with the hanging rod 2, the hanging rod 2 is a long screw rod, and the internally supporting frame 3 is arranged on the hanging rod 2; the inner supporting frame 3 comprises a sliding sleeve 3a sleeved on the suspension rod 2 and a support 3b fixed at the lower end of the suspension rod 2, the suspension rod 2 between the sliding sleeve 3a and the support 3b is opened by a spring 4, the upper ends of the three upper supporting rods 3c are hinged on the sliding sleeve 3a in an equal circumferential angle distribution manner, the lower ends of the three upper supporting rods 3c are hinged with the upper parts of the three lower supporting rods 3d, the upper ends of the three lower supporting rods 3d are provided with supporting claws 5, and the lower ends of the three lower supporting rods 3d are hinged on the support 3b in an equal circumferential angle distribution manner; a nut adjusting block 6 is arranged on the suspension rod 2 at the upper part of the sliding sleeve 3 a.

The working surface of the supporting claw 5 is matched with the inner edge of the graphite crucible, and the working surface is provided with an anti-skid groove 5 a.

The inner diameter of the spring 4 is 3-5 mm larger than the major diameter of the suspender 2, and the spring can freely move on the suspender.

The three upper supporting rods 3c and the three lower supporting rods 3d have the same length, and the sum of the lengths is the same as the length of the suspension rod 2.

When hoisting, put into the suitable position in the crucible with the hoist earlier, rotatory nut regulating block 6 makes sliding sleeve 3a move down and struts three upper struts 3c and three lower struts 3d, and at this moment spring 4 is the state of compressed, supports claw 5 and crucible inner wall contact and prop tightly, after the operation driving is hung the crucible to appointed position, loosen nut regulating block 6, spring 4 kick-backs and shifts up sliding nut regulating block 6, and three upper struts 3c and three lower struts 3d drive supporting claw 5 and draw in, take out the hoist.

The core of the utility model is that strutting through a spring 4 between sliding sleeve 3a and support 3b, through rotatory swivel nut regulating block 6, sliding sleeve 3a to reciprocating, make every to the contained angle change between the branch, interior carriage 3 struts and makes the claw fix the inner wall at the crucible, screws up the back and lifts by crane the crucible through rings 1 of fixing in 2 upper ends of jib. Therefore, all of the inner supporting frames are used for supporting the supporting claws to be fixed on the inner wall of the crucible, and the utility model belongs to the protection scope.

Claims

1. The utility model provides a hoist for graphite crucible of internal stay formula, includes rings, jib, its characterized in that: the lower part of the hanging ring (1) is connected with a suspender (2), the suspender (2) is a long screw rod, and an inner supporting frame (3) is arranged on the suspender (2); the inner supporting frame (3) comprises a sliding sleeve (3a) sleeved on the suspension rod (2) and a support (3b) fixed at the lower end of the suspension rod (2), the suspension rod (2) between the sliding sleeve (3a) and the support (3b) is supported by a spring (4), the upper ends of the three upper supporting rods (3c) are hinged on the sliding sleeve (3a) in an equal circumferential angle distribution manner, the lower ends of the three upper supporting rods (3c) are hinged with the upper parts of the three lower supporting rods (3d), supporting claws (5) are installed at the upper ends of the three lower supporting rods (3d), and the lower ends of the three lower supporting rods (3d) are hinged on the support (3b) in an equal circumferential angle distribution manner; a nut adjusting block (6) is arranged on the suspender (2) at the upper part of the sliding sleeve (3 a).

2. The inner supporting type hanger for graphite crucibles according to claim 1, wherein: the working surface of the supporting claw (5) is matched with the inner edge of the graphite crucible, and the working surface is provided with an anti-skid groove (5 a).

3. The inner supporting type hanger for graphite crucibles according to claim 1, wherein: the inner diameter of the spring (4) is 3-5 mm larger than the major diameter of the suspender (2), and the spring can freely move on the suspender.

4. The inner supporting type hanger for graphite crucibles according to claim 1 or 2, wherein: the three upper supporting rods (3c) and the three lower supporting rods (3d) have the same length, and the sum of the total lengths of the upper supporting rods and the lower supporting rods is the same as the length of the suspension rod (2).