CN219792146U - Coal pulverizer grinding roller turning device - Google Patents

Abstract

The utility model relates to a coal mill grinding roller turnover device which comprises a compression assembly, a guide assembly and a hoisting fixing assembly, wherein the hoisting fixing assembly comprises a hoisting seat and a turning hook, the hoisting seat is welded at the center of the head of a coal mill, the hoisting seat is connected with the turning hook, the turning hook is connected with a steel wire rope through a U-shaped hanging buckle, the steel wire rope is connected with a crane lifting hook through the guide assembly and the compression assembly, the guide assembly comprises a base B and a fixed pulley B, the guide assembly is arranged on the upper surface of a frame of a coal mill gate, the compression assembly comprises a base A and a fixed pulley A, and the compression assembly is arranged on the outer side of the frame of the coal mill right above the guide assembly; the utility model can automatically find the proper lifting position of the rotating grinding roller during lifting, does not need manual roller coiling, saves a great amount of manpower, material resources and maintenance time, greatly reduces the abrasion of the lifting position, avoids safety accidents caused by abrasion, and has the advantages of small volume, light weight and convenient installation.

Description

Coal pulverizer grinding roller turning device

Technical Field

The utility model relates to the technical field of mechanical equipment, in particular to a turnover device for a grinding roller of a coal mill.

Background

The coal pulverizer commonly used in the steel mill can all form a complete set grinding roller device, need utilize gallows hanging disc hoist and mount 6 times to the grinding roller maintenance, repeatedly install and dismantle lifting means, need consume a large amount of manpower and materials, the fixed screw of gallows is in the side of grinding roller, need to rotate the manual dish of grinding roller and find the position directly over, it is time consuming and laborious, and the grinding roller works in the workstation, form certain wearing and tearing to the fixed screw of hoist and mount easily, the danger of the fixed screw of grinding roller gallows has inefficacy after wearing and tearing, cause major accidents such as grinding roller drop, grinding roller center hoisting point is located the mill gate directly over, need to overturn the grinding roller out of the workstation, former factory need install grinding roller hoist and mount annex, the narrow very easy emergence of construction department crush injury people accident.

The Chinese patent with the publication number of CN216638620U discloses a grinding roller overturning device for a coal mill, which comprises a frame, a sling, a movable pulley assembly, a first supporting structure and a second supporting structure, wherein the movable pulley assembly comprises a pulley bracket, a movable pulley and a first lifting lug, the movable pulley is rotationally arranged on the pulley bracket, the first lifting lug is fixedly connected with the pulley bracket, the first supporting structure and the second supporting structure are respectively arranged on the frame, when the sling is in a first state, the first end of the sling is connected with the frame, and the second end of the sling sequentially bypasses the movable pulley and the first supporting structure and is connected with the grinding roller; when the sling is in the second state, the first end of the sling is connected with the frame, and the second end of the sling sequentially bypasses the movable pulley and the second supporting structure and is connected with the grinding roller; the lifting hook of the travelling crane lifts the movable pulley assembly to drive the grinding roller to turn over, and the movable pulley is matched with the first support structure or the second support structure to turn out of the grinding roller or turn in the grinding roller, so that the lifting distance is reduced, and the requirement on space is reduced; however, the patent still has the problems that the hoisting tool needs to be dismounted repeatedly, manpower and material resources are consumed, the screw port is fixed on the side surface of the grinding roller by the hanging frame, and production abrasion still exists, and huge potential safety hazards still exist.

Chinese patent publication No. CN215974732U discloses a coal mill grinding roller turning device, comprising an upper bracket; the upper bracket is provided with an angle pulley and two first steering pulleys; the angle pulley is arranged between the two bottom connecting rods of the upper bracket; the two first steering pulleys are respectively arranged between the two front connecting rods of the upper bracket; one ends of the two bottom connecting rods are connected with a first fixing seat together; a lower bracket; the lower bracket comprises a bracket base; the upper surface of the front part of the bracket base is provided with a second steering pulley; the rear part of the bracket base is fixedly connected with a second fixing seat; the two sides of the front part of the bracket base are fixedly connected with inclined connecting rods respectively; one end of the inclined connecting rod is fixedly connected with a third fixing seat; the utility model can redirect the hoisting steel rope, maintain the pulling angle of the steel rope, can rapidly and stably hoist the grinding roller out of the coal mill stably, and reduces the hoisting height requirement; the lifting device needs a certain floor area, and the hanging frame is used for fixing the screw on the side surface of the grinding roller, so that the problem of production abrasion still exists, and huge potential safety hazards still exist.

Disclosure of Invention

The utility model provides a grinding roller turnover device of a coal mill, which utilizes a compression assembly to prevent a steel rope from jumping back and forth, limits the running direction of the steel rope, prevents equipment damage caused by excessive tension generated by the steel rope, utilizes a guide assembly to guide the steel rope, and a hoisting fixing assembly is arranged at the center of the head of the grinding roller, so that a rotating grinding roller can automatically find a proper hoisting position during hoisting, a manual disc roller is not needed, a great amount of manpower and material resources and maintenance time are saved, the abrasion of the hoisting position is greatly reduced, and safety accidents caused by abrasion are avoided; the device ensures the safety of hoisting and overturning, realizes efficient hoisting and overturning of the grinding roller, and greatly shortens the overhaul time, thereby further ensuring the blast furnace injection and completing the uninterrupted production of the pulverized coal.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

the utility model provides a coal pulverizer grinding roller turning device, includes compressing tightly subassembly, direction subassembly, hoist and mount fixed subassembly, and hoist and mount fixed subassembly includes hoist and mount seat and turns round the hook, and hoist and mount seat welding is in grinding roller head center department, and hoist and mount seat connects turns round the hook, turns round the hook and connects wire rope through U-shaped hanging buckle, and wire rope passes through direction subassembly, compresses tightly the subassembly and connects crane lifting hook;

the guide assembly comprises a base B and a fixed pulley B, the base B is arranged on the upper surface of the frame of the coal mill gate, the compression assembly comprises a base A and a fixed pulley A, and the compression assembly is arranged on the outer side of the frame of the coal mill right above the guide assembly.

Further, the number of the fixed pulleys A is 2, and the fixed pulleys A are arranged on the base A in parallel.

Further, the number of fixed pulleys B is 2, the fixed pulleys B are arranged on the base B in parallel, and a copper spacer is arranged between the two fixed pulleys B.

Further, the pulley groove of the fixed pulley A is a ladder-shaped groove, the depth is 35-45 mm, and the width of the bottom of the pulley groove is 20-25 mm.

Further, the pulley groove of the fixed pulley B is a ladder-shaped groove, the depth is 20-25 mm, and the width of the bottom of the pulley groove is 20-25 mm.

Further, the outer diameter of the fixed pulley A is 190-200 mm.

Further, the outer diameter of the fixed pulley B is 100-120 mm.

Further, lifting lugs are arranged on the lifting seats.

Compared with the prior art, the utility model has the beneficial effects that:

1) The pressing component is used for preventing the steel rope from jumping back and forth, limiting the running direction of the steel rope and preventing the steel rope from generating excessive tension to cause equipment damage;

2) The steel wire rope is guided by the guide assembly, the hoisting fixing assembly is arranged at the center of the head of the grinding roller, and the rotating grinding roller can automatically find a proper hoisting position during hoisting, so that manual coiling of the roller is not needed, a large amount of manpower and material resources and overhaul time are saved, the abrasion of the hoisting position is greatly reduced, and safety accidents caused by abrasion are avoided;

3) The device ensures the safety of hoisting and overturning, realizes efficient hoisting and overturning of the grinding roller, and greatly shortens the overhaul time, thereby further ensuring the blast furnace injection and completing the uninterrupted production of the pulverized coal.

4) The device has small volume, light weight and convenient installation.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic view of the structure of the pressing assembly of the present utility model.

Fig. 3 is a schematic view of the guide assembly according to the present utility model.

In the figure: 1. wire rope 2, base A3, fixed pulley A4, base B5, B fixed pulley 6, lifting seat 7, turning hook 8.U type lifting buckle 9, coal mill frame 10, coal mill gate 11, rotary shaft 12, grinding roller 13, copper spacer

Detailed Description

The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:

fig. 1 is a schematic diagram of the structure of the present utility model. The utility model relates to a grinding roller overturning device for a coal mill, which comprises a compacting component, a guiding component and a hoisting and fixing component, wherein the hoisting and fixing component comprises a hoisting seat 6 and a turning hook 7, the hoisting seat 6 is welded at the center of the head of a grinding roller 12 opposite to the rotating shaft, a lifting lug is arranged on the hoisting seat 6, the lifting lug is connected with the turning hook 7, the turning hook 7 is connected with a pair of steel wire ropes 1 through a group of butted U-shaped hanging buckles 8, and the pair of steel wire ropes 1 are connected with a crane lifting hook through the guiding component and the compacting component.

See fig. 1, 2, compress tightly the subassembly and include base A2 and fixed pulley A3, and base A2 installs the coal pulverizer frame 9 outside directly over the direction subassembly, and fixed pulley A3 is 2, installs on base A2 side by side, and fixed pulley A3's wheel groove is the ladder groove, and the degree of depth is 43mm, and wheel groove bottom width is 21mm, and fixed pulley A3 diameter is 195mm.

See fig. 1, 3, the direction subassembly includes base B4 and fixed pulley B5, and base B4 installs at coal pulverizer gate 10 frame upper surface, and base B5 is 2, installs on the bearing in base B4 side by side, sets up copper spacer 13 between two fixed pulley B5, and fixed pulley B5's wheel groove is the ladder groove, and the degree of depth is 23mm, and wheel groove bottom width is 19mm, and fixed pulley B5 diameter is 110mm.

The hoisting base 6 is welded at the center of the head of the grinding roller 12 opposite to the rotating shaft, the hoisting base 6 is provided with a lifting lug, the lifting lug is connected with the turning hook 7, the turning hook 7 is connected with a pair of steel wire ropes 1 through a group of butt-joint U-shaped hoisting buckles, the U-shaped hoisting buckles 8 connected with the turning hook 7 are in contact with the grinding roller during hoisting, the steel wire ropes 1 are prevented from being directly used for hoisting, the steel wire ropes 1 are more convenient to replace during maintenance, the horizontal direction and the vertical position of the hoisting grinding roller 12 are adjusted by the pair of hoisting steel wire ropes 1 along the wheel grooves of the fixed pulley B5, the pair of hoisting steel wire ropes 1 are restrained in the wheel grooves of the fixed pulley A3, the steel wire ropes 1 are pulled by a crane, the grinding roller 12 is hoisted and turned over along the rotating shaft 11 under the dragging of the steel wire ropes 1, the rotating grinding roller automatically finds a proper hoisting position during hoisting, an artificial disc roller is not needed, the maintenance time of more than 16-24 hours of an original hoisting tool and an artificial disc roller is shortened to 8-10 hours, and the maintenance safety is ensured.

The above examples are implemented on the premise of the technical scheme of the present utility model, and detailed implementation manners and specific operation processes are given, but the protection scope of the present utility model is not limited to the above examples. The methods used in the above examples are conventional methods unless otherwise specified.

Claims (8)

1. The utility model provides a coal pulverizer grinding roller turning device which characterized in that, includes hold-down assembly, guide assembly, hoist and mount fixed subassembly includes hoist and mount seat and turning hook, hoist and mount seat welding in grinding roller head center department, hoist and mount seat connect turning hook, turning hook pass through U-shaped hanging buckle and connect wire rope, wire rope passes guide assembly, hold-down assembly and connects crane lifting hook;

the guide assembly comprises a base B and a fixed pulley B, the guide assembly is arranged on the upper surface of a frame of a coal mill gate, the pressing assembly is arranged on the outer side of the frame of the coal mill right above the guide assembly, and the pressing assembly comprises a base A and a fixed pulley A.

2. The turnover device of grinding roller of coal mill according to claim 1, wherein the number of fixed pulleys A is 2, and the fixed pulleys A are arranged on the base A in parallel.

3. The turnover device of grinding roller of coal mill according to claim 1, wherein the number of fixed pulleys B is 2, and the fixed pulleys B are installed on the base B in parallel, and a copper spacer is disposed between the two fixed pulleys B.

4. The turnover device of grinding roller of coal mill according to claim 1, wherein the wheel groove of the fixed pulley A is a ladder-shaped groove, the depth is 35-45 mm, and the width of the bottom of the wheel groove is 20-25 mm.

5. The turnover device of grinding roller of coal mill according to claim 1, wherein the wheel groove of the fixed pulley B is a ladder-shaped groove with a depth of 20-25 mm and a width of 20-25 mm at the bottom of the wheel groove.

6. The turnover device of milling roller of coal mill as claimed in claim 1, wherein the outer diameter of the fixed pulley A is 190-200 mm.

7. The turnover device of milling roller of coal mill as claimed in claim 1, wherein the outer diameter of the fixed pulley B is 100-120 mm.

8. The turnover device of milling roller of coal mill as claimed in claim 1, wherein lifting lugs are arranged on the lifting seats.