CN218747495U

CN218747495U - Puller for shaft

Info

Publication number: CN218747495U
Application number: CN202222422039.5U
Authority: CN
Inventors: 于永发; 李志刚; 李培军; 邹本禹; 田长河; 刘雷; 尹可虎; 王野; 宋彦刚; 李鹏
Original assignee: China Power Investment Jinzhou Port Co ltd
Current assignee: China Power Investment Jinzhou Port Co ltd
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2023-03-28
Anticipated expiration: 2032-09-13

Abstract

The utility model belongs to the technical field of boiler equipment grate maintenance, concretely relates to axial puller, the puller includes drawing crossbeam (1), drawing bolt (2), drawing clamp plate (3), clamp plate bolt (5) and puller dop (6), the center of drawing crossbeam (1) sets up the bell mouth, and the both sides of bell mouth set up clamp plate bolt hole and drawing bolt hole, the center of drawing clamp plate (3) sets up the axle through-hole, and axle through-hole both sides set up clamp plate through-hole and drawing through-hole; the taper hole corresponds to the shaft through hole, the press plate bolt hole corresponds to the press plate through hole, and the drawing bolt hole corresponds to the drawing through hole; the puller chuck (6) is arranged in the conical hole, and the pressing plate bolt (5) penetrates through the pressing plate through hole and is fixed in the pressing plate bolt hole; drawing bolt (2) and passing drawing the through-hole and drawing the bolt hole, the rotating is drawn bolt (2) and is used for jack-up puller. The utility model has the characteristics of simple structure, convenient to use etc.

Description

Puller for shaft

Technical Field

The utility model belongs to the technical field of boiler equipment grate maintenance, concretely relates to axial puller for biomass boiler grate axle's dismantlement.

Background

Due to the maintenance requirement of the fire grate of the boiler equipment, the fire grate shaft of a common biomass boiler needs to be frequently disassembled, and the disassembly of the fire grate shaft of the biomass boiler is always difficult. The biomass boiler grate shaft and the grate holes are subjected to the action of high temperature in the boiler for a long time, and the surface of the grate shaft generates local plastic deformation and oxidation corrosion, so that the grate shaft is very difficult to disassemble. There are two ways to dismantle the grate axle every time: 1. several manual cutting pliers are needed to clamp the workpiece and then the workpiece is pulled outwards in a bit-by-bit movable manner, so that the working efficiency is extremely low. Meanwhile, due to the limitation of the maintenance operation space, the worker cannot exert force, and the hidden danger that the worker falls down and is injured also can occur. 2. When the flame cutting method is adopted for cutting, the method is a destructive dismounting method, so that the consumption of the furnace shaft is increased, and the maintenance cost of equipment is increased. Both methods are therefore time consuming and costly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an axle is with drawing ware, should draw the ware can be convenient pull out the grate axle from the grate to reach and improve dismantlement efficiency, reduce intensity of labour and maintenance cost.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

a puller for a shaft comprises a drawing cross beam, a drawing bolt, a drawing pressing plate, a pressing plate bolt and a puller chuck, wherein a tapered hole is formed in the center of the drawing cross beam, a pressing plate bolt hole and a drawing bolt hole are formed in two sides of the tapered hole, a shaft through hole is formed in the center of the drawing pressing plate, and a pressing plate through hole and a drawing through hole are formed in two sides of the shaft through hole; the taper hole corresponds to the shaft through hole, the press plate bolt hole corresponds to the press plate through hole, and the drawing bolt hole corresponds to the drawing through hole;

the puller chuck is arranged in the conical hole, and the pressing plate bolt penetrates through the pressing plate through hole and is fixed in the pressing plate bolt hole; the drawing bolt penetrates through the drawing through hole and the drawing bolt hole, and the drawing bolt is rotated to jack the drawing device.

Preferably, a pressure plate nut is arranged between the pressure plate bolt and the drawing pressure plate.

Preferably, the inner bore diameter of the puller chuck is the same as the inner diameter of the shaft through hole.

Preferably, the pressure plate bolt holes are symmetrically arranged on two sides of the conical hole; the drawing bolt holes are symmetrically arranged on two sides of the conical hole.

Preferably, the distance from the drawing bolt hole to the taper hole is larger than the distance from the pressing plate bolt hole to the taper hole.

Preferably, the drawing beam and the drawing pressing plate are the same in shape and are both rectangular or circular.

The drawbench chuck of the utility model is internally provided with internal threads for screwing the grate shaft; the drawing beam is provided with a tapered hole for installing a drawing device chuck and a pressing plate bolt hole for installing a drawing pressing plate so as to ensure that the grate shaft drawing device has enough pressing force on the grate shaft.

The utility model has the characteristics of simple structure, convenient to use etc.

The working principle of the utility model is as follows:

1. firstly, loosening a drawing pressing plate 3 and a pressing plate nut 4 of a drawing beam 1 so as to facilitate a drawing device chuck 6 to be smoothly sleeved on a fire grate shaft 7;

2. sleeving a conical top of a puller chuck 6 on a fire grate shaft 7 in a direction towards a boiler, and screwing a pressure plate nut 4 of a pulling pressure plate to tightly sleeve the puller on the fire grate shaft 7;

3. a pulling bolt 2 on the grate shaft puller is screwed by a wrench, the friction force between the pulling bolt and a grate shaft 7 is increased by utilizing the internal thread of a puller chuck 6, and the grate shaft 7 is pulled out from the grate by the principle of spiral force transmission.

Compared with the prior art, the utility model discloses following technical advantage has:

1. the original method for disassembling the grate shaft needs a plurality of manual cutting pliers to clamp the grate shaft, and then the grate shaft is pulled outwards in a moving manner little by little, so that the working efficiency is extremely low. Meanwhile, due to the limitation of the maintenance operation space, the force of the workers cannot be increased, and the hidden danger that the workers fall down and are injured can also occur. Adopt the utility model discloses an after the axial is with drawing the ware, only need two workers just can accomplish the dismantlement work of grate axle, reduce the probability that the staff bumps simultaneously.

2. When the original flame cutting method is adopted for cutting, the method is a destructive dismounting method, so that the consumption of the furnace grate shaft is increased, and the maintenance cost of equipment is increased. Adopt the utility model discloses a behind the axial puller, can take out old grate axle is whole and use repeatedly, reduce the consumption of grate axle, reduce the cost of overhaul.

3. Adopt the utility model discloses an axle is with drawing ware can reduce staff's quantity, alleviates workman's intensity of labour, reduces the consumption of grate axle and grate, improves the work efficiency of boiler maintenance.

Drawings

FIG. 1 is a schematic structural view of a shaft puller according to the present invention;

reference numerals:

1. drawing the beam; 2. drawing the bolt; 3. drawing the pressing plate; 4. a platen nut; 5. a platen bolt; 6. a puller chuck; 7. a grate shaft.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1, the puller for the shaft comprises a drawing beam 1, a drawing bolt 2, a drawing press plate 3, a press plate bolt 5 and a puller chuck 6, wherein a tapered hole is formed in the center of the drawing beam 1, a press plate bolt hole and a drawing bolt hole are formed in two sides of the tapered hole, a shaft through hole is formed in the center of the drawing press plate 3, and a press plate through hole and a drawing through hole are formed in two sides of the shaft through hole; the taper hole corresponds to the shaft through hole, the press plate bolt hole corresponds to the press plate through hole, and the drawing bolt hole corresponds to the drawing through hole;

the puller chuck 6 is arranged in the conical hole, and the pressing plate bolt 5 penetrates through the pressing plate through hole and is fixed in the pressing plate bolt hole; drawing bolt 2 and passing drawing the through-hole and drawing the bolt hole, the bolt 2 is used for jack-up puller is drawn in the rotating.

And a pressing plate nut 4 is arranged between the pressing plate bolt 5 and the drawing pressing plate 3.

The inner aperture of the puller chuck 6 is the same as the inner diameter of the shaft through hole.

The pressure plate bolt holes are symmetrically arranged on two sides of the conical hole; the drawing bolt holes are symmetrically arranged on two sides of the conical hole.

The distance from the drawing bolt hole to the conical hole is larger than the distance from the pressing plate bolt hole to the conical hole.

The drawing beam 1 and the drawing pressing plate 3 are the same in shape and are rectangular.

Conventional technical knowledge in the field can be adopted in the content which is not described in detail in the present invention.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will understand that modifications and equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of them shall fall within the scope of the claims of the present invention.

Claims

1. The axial drawing device is characterized by comprising a drawing cross beam (1), a drawing bolt (2), a drawing pressing plate (3), a pressing plate bolt (5) and a drawing device chuck (6), wherein a conical hole is formed in the center of the drawing cross beam (1), a pressing plate bolt hole and a drawing bolt hole are formed in two sides of the conical hole, an axial through hole is formed in the center of the drawing pressing plate (3), and a pressing plate through hole and a drawing through hole are formed in two sides of the axial through hole; the tapered hole corresponds to the shaft through hole, the pressing plate bolt hole corresponds to the pressing plate through hole, and the drawing bolt hole corresponds to the drawing through hole;

the puller chuck (6) is arranged in the conical hole, and the pressing plate bolt (5) penetrates through the pressing plate through hole and is fixed in the pressing plate bolt hole; drawing bolt (2) and passing drawing the through-hole and drawing the bolt hole, the rotating is drawn bolt (2) and is used for jack-up puller.

2. A puller as claimed in claim 1, characterised in that a press plate nut (4) is arranged between the press plate bolt (5) and the pull press plate (3).

3. A puller as claimed in claim 1, characterised in that the inner diameter of the puller jaw (6) is the same as the inner diameter of the shaft through bore.

4. The axial puller according to claim 1, wherein the press plate bolt holes are symmetrically arranged on both sides of the tapered hole; the drawing bolt holes are symmetrically arranged on two sides of the conical hole.

5. The shaft puller according to claim 1, wherein the distance from the puller bolt hole to the tapered hole is greater than the distance from the press plate bolt hole to the tapered hole.

6. Puller according to claim 1, characterized in that the drawing beam (1) and the drawing platen (3) are of the same shape, both rectangular or circular.