Turnabout drum lifting transfer trolley

Abstract

A turnabout drum lifting transfer trolley comprises a lifting and clamping structure and a lifting structure, the lifting and clamping structure is arranged above the lifting structure, the lifting and clamping structure comprises a lifting box body, a sliding groove, a bidirectional lead screw, a clamping block, a limiting block and a hand wheel, the sliding groove is formed in the lifting box body, the bidirectional lead screw is arranged in the sliding groove, and the clamping block is arranged in the lifting box body. Clamping blocks are arranged on the two sides of the bidirectional lead screw, and hand wheels are arranged at the ends of the bidirectional lead screw. The lifting structure comprises a base and a fixed box fixed to the base, a sliding groove is formed in the fixed box, a two-way lead screw is arranged in the sliding groove, a limiting block is arranged in the middle of the two-way lead screw, transmission clamping plates are arranged on the two sides of the two-way lead screw, and a hand wheel is arranged at the end of the two-way lead screw. The lifting device further comprises a transmission rod and a rotating shaft, the transmission clamping plate is connected with the transmission rod through the rotating shaft, and the transmission rod is connected with the bottom of the lifting box body. The problems that a turnabout drum below a belt of a large belt conveyor is pulled out for transfer, and a bearing is inconvenient to replace can be solved.

Description

Technical Field

[0001] The utility model belongs to the field of belt transmission equipment, in particular to a redirection roller lifting and transferring trolley, which is particularly suitable for use when repairing and replacing redirection rollers of large-scale belt-type coal conveyors. Background Art

[0002] Thermal power plants use large belt conveyors to transport coal. Such belt conveyors have large drop heights, with the maximum drop reaching 55m. They are heavy loads, and coupled with the humid surrounding environment, long-term operation will cause problems such as debonding of the redirecting roller and bearing damage. The redirecting roller must be repaired or replaced in a timely manner. However, a single redirecting roller weighs about 1,500 kilograms, and the space under the belt is narrow, which makes it very inconvenient to extract and transport the redirecting roller or replace its bearings. A device needs to be designed to solve the above problems. Summary of the invention

[0003] The utility model aims to provide a redirecting roller lifting and transporting trolley, which is a special tool used in the repair and replacement of redirecting rollers of belt-type coal conveyors, and solves the difficult problems of inconvenient extraction and transport of redirecting rollers and bearing replacement under the belts of large belt conveyors.

[0004] The technical solution adopted by the utility model is: a redirecting roller lifting and transferring trolley, which comprises a lifting and clamping structure and a lifting structure, wherein the lifting and clamping structure is arranged above the lifting structure, and the lifting and clamping structure comprises a lifting box, a slide groove, a bidirectional lead screw, a clamping block, a limit block and a hand wheel, wherein the slide groove is arranged in the lifting box, a bidirectional lead screw is arranged in the slide groove, a limit block is arranged in the middle of the bidirectional lead screw, clamping blocks are arranged on both sides of the bidirectional lead screw, and a hand wheel is arranged at the end;

[0005] The lifting structure includes a base and a fixed box fixed on the base, a slide groove is arranged in the fixed box, a bidirectional screw is arranged in the slide groove, a limit block is arranged in the middle of the bidirectional screw, transmission splints are arranged on both sides of the bidirectional screw, and a hand wheel is arranged at the end; it also includes a transmission rod and a rotating shaft, the transmission splint is connected to the transmission rod through the rotating shaft, and the transmission rod is connected to the bottom of the lifting box.

[0006] Furthermore, guide rods for controlling the lifting balance of the lifting box are arranged on both sides of the lifting box, and the guide rods include a guide outer rod and a guide inner rod, and the guide inner rod can move up and down in the guide outer rod.

[0007] Furthermore, the width of the lifting box is set to 1 / 4 to 1 / 2 of the length of the redirecting roller.

[0008] Furthermore, a steering wheel is arranged below the base.

[0009] The working principle and operation method of the utility model are as follows: the utility model is placed under the redirecting roller, the upper hand wheel rotates the bidirectional screw, the bidirectional screw drives the clamping block to move in the slide groove, the limit block limits the clamping block to be squeezed together, and the clamping block cooperates with the lifting box to clamp and fix the redirecting roller; the lower hand wheel rotates the bidirectional screw, the bidirectional screw drives the transmission clamping plate to make the transmission rod rise and fall, the limit block limits the transmission clamping plate to be squeezed together, and the lifting box connected to the transmission rod can realize the lifting action at the same time, which can lift one end of the redirecting roller to realize the bearing replacement of the redirecting roller; or the other end is lifted and pulled by the lifting equipment, and the utility model moves axially at the same time to move the redirecting roller out, so as to realize the replacement and transportation of the redirecting roller.

[0010] The guide rods on both sides of the lifting box ensure that the lifting box can complete up and down movement in the vertical direction.

[0011] The width of the lifting box is set to 1 / 3 to 1 / 2 of the length of the redirecting roller, which makes it convenient for the trolley to control part of the redirecting roller and facilitates operation.

[0012] The steering wheels are arranged under the base to enable the trolley to move in any direction.

[0013] The beneficial effects of the utility model are: the redirection roller lifting and transporting trolley is simple to manufacture, easy to move, highly versatile, and highly efficient. The redirection roller lifting and transporting trolley is used for the belt conveyor to overhaul and replace the redirection roller, and is easy to operate and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the belt conveyor structure;

[0016] Figure 3 It is a schematic diagram of the redirection roller structure.

[0017] In the figure: 1. clamping block, 2. lifting box, 3. bidirectional screw, 4. hand wheel, 5. slide groove, 6. transmission rod, 7. rotating shaft, 8. transmission splint, 9. limit block, 10. guide rod, 10-1, guide outer rod, 10-2, guide inner rod, 11. base, 12, steering wheel, 13, fixed box, 14, redirecting roller, 15, roller, 16, bearing, 17, center shaft. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with the disclosed drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments, and the purpose is to facilitate those skilled in the art to have a clearer and more complete understanding of the technical solution of the present invention. The embodiments disclosed in the present invention are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0019] like Figure 1 As shown, the redirecting roller lifting and transfer trolley described in the utility model includes a lifting and clamping structure and a lifting structure, and the lifting and clamping structure is arranged above the lifting structure; the lifting and clamping structure includes a lifting box 2, a slide groove 5, a bidirectional screw 3, a clamping block 1, a limit block 9, and a handwheel 4. The slide groove 5 is arranged in the lifting box 2, the bidirectional screw 3 is arranged in the slide groove 5, the limit block 9 is arranged in the middle of the bidirectional screw 3, the clamping blocks 1 are arranged on both sides of the bidirectional screw 3, and the handwheel 4 is arranged at the end.

[0020] The lifting structure includes a base 11, a fixed box 13, a slide 5, a bidirectional screw 3, a limit block 9, a transmission splint 8, a transmission rod 6, a rotating shaft 7, and a handwheel 4. The fixed box 13 is fixed on the base 11, the slide 5 is arranged in the fixed box 13, the bidirectional screw 3 is arranged in the slide 5, the limit block 9 is arranged in the middle of the bidirectional screw 3, the transmission splint 8 is arranged on both sides of the bidirectional screw 3, and the handwheel 4 is arranged at the end. The transmission splint 8 is connected to the transmission rod 6 through the rotating shaft 7, and the transmission rod 6 is connected to the bottom of the lifting box 2.

[0021] This example takes a 2×350MW unit in a thermal power plant as an example. The unit is designed to burn 3.15 million tons of coal and is equipped with 16 large belt conveyors. The belt conveyor has a large drop (maximum standard deviation 55m), heavy load, and humid surrounding environment, which causes the debonding of the redirecting roller and bearing damage, which requires timely maintenance or replacement. The drum is heavy and the space under the belt is narrow, making it difficult to extract and transport the roller and replace the bearing. This unit needs to replace the C7B steering roller, which has a diameter of Φ500mm, a length of L=1200mm, and a weight of 1662kg. In this embodiment, the trolley base 11 is set to be 800mm long and 350mm wide; the outer guide rod 10 uses DN50, a thickened tube with a wall thickness of 4.5mm, an inner diameter of 51mm, and L=500mm, and the inner guide rod 10 uses DN40, an outer diameter of 48mm, and L=500mm; the bidirectional screw 3 is made of 45# round steel, d=32mm, P=6, L=800mm, and a matching external thread is processed so that it is placed in the slide groove 5 and connected to the clamping block 1 or the transmission clamping plate 8 to achieve its opposite or reverse synchronous movement; the handwheel 4 has an outer diameter of Φ100mm and is made of Φ12mm round steel.

[0022] Guide rods 10 are also arranged on both sides of the lifting box 2. The guide rods 10 are composed of a guide outer rod 10-1 and a guide inner rod 10-2 that can move up and down in the guide outer rod 10-1, and are used to control the vertical movement and balance of the lifting box 2.

[0023] The width of the lifting box 2 is set according to the length of the redirecting roller 14 , and the width of the lifting box 2 is generally set to 1 / 4 to 1 / 2 of the length of the redirecting roller 14 .

[0024] A steering wheel 12 is also installed below the base 11 for facilitating the movement of the base 11 .

[0025] like Figure 2 As shown, the redirecting roller 14 is arranged at the position of the belt conveyor. Figure 3 The redirecting roller 14 shown comprises a roller 15, a bearing 16 and a central shaft 17, one end of the central shaft 17 is connected to the roller 15, and the other end is mounted with the bearing 16. The bearing is fixed with fixing bolts.

[0026] The working principle and usage of the redirecting roller lifting and transfer trolley are as follows: place the trolley at the bottom of the inner side of the redirecting roller in a direction perpendicular to the axis of the roller, turn the lower hand wheel 4 to drive the transmission clamping plate 8 to lift the box 2 and gradually lift the redirecting roller, and synchronously lift the guide rod 10 to achieve balanced vertical movement of the lifting box 2, and turn the upper hand wheel 4 to drive the clamping plate 1 to clamp the redirecting roller. After loosening the bearing fixing bolts on both sides of the redirecting roller, use the lifting equipment to lift the outer side of the roller, adjust the lifting and transfer trolley to raise the redirecting roller to a suitable position, and when the lifting equipment moves along the axial direction of the roller, move the trolley base 11 synchronously to drive the steering wheel 12 to move axially until the redirecting roller removes the belt, and the replacement of the redirecting roller is completed.

[0027] The above is only one embodiment of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A redirecting roller lifting and transferring trolley, characterized in that: It comprises a lifting and clamping structure and a lifting structure, wherein the lifting and clamping structure is arranged above the lifting structure, and the lifting and clamping structure comprises a lifting box (2), a slide groove (5), a bidirectional lead screw (3), a clamping block (1), a limit block (9) and a hand wheel (4), wherein the slide groove (5) is arranged in the lifting box (2), the bidirectional lead screw (3) is arranged in the slide groove (5), the limit block (9) is arranged in the middle of the bidirectional lead screw (3), the clamping blocks (1) are arranged on both sides of the bidirectional lead screw (3), and the hand wheel (4) is arranged at the end; The lifting structure comprises a base (11) and a fixed box (13) fixed on the base (11); a slide groove (5) is arranged in the fixed box (13); a bidirectional screw (3) is arranged in the slide groove (5); a limit block (9) is arranged in the middle of the bidirectional screw (3); transmission splints (8) are arranged on both sides of the bidirectional screw (3); and hand wheels (4) are arranged at the ends; the lifting structure also comprises a transmission rod (6) and a rotating shaft (7); the transmission splint (8) is connected to the transmission rod (6) through the rotating shaft (7); and the transmission rod (6) is connected to the bottom of the lifting box (2).

2. The redirecting roller lifting and transferring trolley according to claim 1 is characterized in that: Guide rods (10) for controlling the lifting balance of the lifting box (2) are arranged on both sides of the lifting box (2); the guide rods (10) comprise guide outer rods (10-1) and guide inner rods (10-2); the guide inner rods (10-2) can move up and down in the guide outer rods (10-1).

3. A redirecting roller lifting and transferring trolley according to claim 1 or 2, characterized in that The width of the lifting box (2) is 1 / 4 to 1 / 2 of the length of the redirecting roller.

4. The redirecting roller lifting and transferring trolley according to claim 1 is characterized in that A steering wheel (12) is provided below the base (11).

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