CN218742419U - Roller changing equipment of high-pressure roller mill - Google Patents

Abstract

The utility model discloses a roller changing device of a high-pressure roller mill, which belongs to the field of high-pressure roller mills and comprises an external base, a winch and a track, wherein the external base is provided with the winch, a limiting bracket is arranged on a relative driving part of the track, a positioning hole is arranged on the limiting bracket, a roller changing trolley is arranged on the track, and a steel wire rope is arranged at the output end of the winch; the roll changing trolley comprises an upper beam, a main frame and a wheel train, wherein the main frame is provided with two longitudinal end parts, a lower frame column is arranged in the middle of the main frame, and the upper beam positioned at the upper part and the wheel train positioned at the bottom are respectively arranged at the two end parts; the upper beam is provided with a side support and a limit support, and the side support and the limit support are suitable for abutting against the lower rack of the roller system; the two sides of the main frame are respectively provided with a left-right adjusting jackscrew and an up-down adjusting jackscrew. The utility model provides a hoist and mount transportation space not enough, few factory building investment and the cost that expenditure of maintaining the roller system reduce the technical problem who overhauls the maintenance process risk.

Description

Roller changing equipment of high-pressure roller mill

Technical Field

The utility model belongs to high pressure grinding roller field, concretely relates to high pressure grinding roller roll changing equipment.

Background

The high-pressure roller mill is widely applied to the working procedures of material crushing or specific surface area increasing in the industries of mines, cement, pellets and the like due to the high-efficiency crushing and grinding treatment effect. In order to ensure the use effect of the high-pressure roller mill, the roller system of the high-pressure roller mill needs to be overhauled, maintained and replaced for many times in the whole life cycle of the high-pressure roller mill. On the other hand, the trend of the enlargement of the mining equipment is more obvious, and in recent years, the weight of the roller system of the high-pressure roller mill applied to the industry is basically not less than 30t, slightly more, 50 to 70t and more, the roller system reaches over hundred tons.

The existing high-pressure roller mill roller system hoisting, overhauling and maintaining mode needs a high-pressure roller mill running workshop to be provided with a large crane or rent a large hoisting engineering truck, so that a steel structure of a factory building needs to meet a certain bearing grade and needs to leave a larger operating space and an external operating vehicle access passage, and the construction investment of the factory building, the overhauling and maintaining cost of the high-pressure roller mill and the process risk are increased. The roller changing equipment structure is provided for improving the maintenance efficiency of the roller system of the high-pressure roller mill, reducing the investment of a factory building and the cost spent on maintaining the roller system, and reducing the risk of the maintenance process.

The common roller system maintenance and replacement modes of the high-pressure roller mill include 2 types: the most direct method is to use a workshop crane to directly lift and transfer after the whole machine is disassembled; the other method is to arrange a slide way along the base of the main frame, arrange a traction device outside the slide way, simply disassemble one end of the main frame and the connection part of the roller system and the frame when maintaining and replacing the roller system, directly pull out the roller system, and finally use a hoisting device for transferring.

Reference ZL202021055266.3 discloses a roller changing system of a high-pressure roller mill, wherein a roller system maintenance and replacement technology is adopted, the roller system maintenance and replacement technology includes a first traction device, a maintenance trolley and a second traction device which are arranged along the roller mill, the maintenance trolley is used for transportation when the roller is replaced, and two groups of traction devices are hydraulic windlasses. The method has the advantages that the lifted position of the roller system is still close to the roller mill in a factory building, the lifting and transferring space is insufficient, and particularly, the crane is inconvenient to enter the field.

Disclosure of Invention

In order to solve the technical problems, the inventor obtains the technical scheme of the utility model through practice and summary, the utility model discloses a high-pressure roller mill roll changing equipment, which comprises an external base, a winch and a track, wherein the winch is arranged on the external base, a limiting bracket is arranged on the relative driving part of the track, a positioning hole is arranged on the limiting bracket, a roll changing trolley is arranged on the track, the roll changing trolley moves on the track, a steel wire rope is arranged at the output end of the winch, and a double-hook pulley and a single-hook pulley are respectively wound on the steel wire rope;

the roll changing trolley comprises an upper beam, a main frame and a wheel train, wherein the main frame is provided with two longitudinal end parts, a lower frame column is arranged in the middle of the main frame, and the upper beam positioned at the upper part and the wheel train positioned at the bottom are respectively arranged at the two end parts;

the upper beam is provided with side supports and limit supports, the side supports and the limit supports are respectively detachably connected with the upper beam, two groups of side supports are respectively arranged on each group of upper beams and are oppositely arranged, and the side supports and the limit supports are suitable for abutting against the lower rack of the roller system;

the left-right adjusting jackscrew and the up-down adjusting jackscrew are respectively installed on two sides of the main frame, the left-right adjusting jackscrew is suitable for transversely adjusting the position of the upper beam, and the up-down adjusting jackscrew is suitable for vertically adjusting the position of the upper beam.

In a further technical scheme, a mounting bracket is mounted at the bottom of the lower frame column, the mounting bracket is detachably connected with the main frame, and an electromagnetic drum brake is mounted at the bottom of the mounting bracket; the roll changing trolley is provided with a drum brake structure, so that the roll changing trolley can be braked at any time in the traction process, and the safety and the usability of the traction process are ensured.

The wheel train is provided with four groups of distribution in the bottom of main frame, the wheel train includes roll wheel train and braking wheel train, roll wheel train and braking wheel train are connected, electromagnetism drum brake is suitable for injecing the braking wheel train.

In a further technical scheme, the adjusting base plate is installed to the bottom of adjusting the jackscrew from top to bottom, the adjusting base plate is provided with multiunit and thickness the same, and the multiunit the adjusting base plate is suitable for the stack and all has seted up the connecting hole, adjust the jackscrew from top to bottom and be suitable for and install in the connecting hole.

In a further technical scheme, a traction bracket is arranged on the upper beam, a traction hole is formed in the traction bracket, and a fixing hole is arranged at the bottom of the traction bracket; the side of the main frame is provided with a lower plate, and the lower plate and the traction support are suitable for being fixed through a fixing bolt.

In a further technical scheme, one end, far away from the winch, of the steel wire rope is suitable for being connected with a group of double-hook pulleys in a winding mode, one group of single-hook pulleys are connected to the end portions of the double-hook pulleys, one end, far away from the single-hook pulleys, of the double-hook pulleys is provided with an auxiliary connecting rope and is fixed to the bottom of the roller system lower rack, and hooks of the single-hook pulleys are suitable for being connected into traction holes in the traction support.

In a further technical scheme, cavity in the main frame both ends are installed, install fixed plate one and fixed plate two in the cavity, fixed plate one and fixed plate two all with main frame fixed connection, it is suitable for passing fixed plate one and fixed plate two and inwards installs drive gear to control the jackscrew, cavity top in is suitable for installing horizontal rack, drive gear is suitable for upwards to mesh with horizontal rack mutually.

The specific operation steps for disassembling the roller system are as follows:

1. firstly, all oil passages, water pipes and hydraulic oil cylinder connecting bolts connected with the roller system are removed. And then, connecting bolts among the upper frame, the stand columns and the roller systems are disassembled, and the upper frame (together with the feeding device) is lifted by 3-5 mm by using a lifting device to keep the upper frame suspended. Then 2 fixed roller side upright posts are disassembled. And continuously detaching the fixed roll side roll cover (together with the cover door). The specific structure of the high-pressure roller mill is described above, and reference can be made to the existing high-pressure roller mill.

2. The roller changing trolley is drawn to the fixed roller side to be in a close state by using a winch, and only one fixed pulley can be used when the roller system is disassembled. During the traction process, the electromagnetic drum brake can be used for braking and fine adjustment at any time.

3. Connecting a roll changing trolley and a fixed roll lower frame by using bolts, wherein the roll system lower frame comprises a fixed roll lower frame and a movable roll lower frame, and the center of an upper beam of the roll changing trolley is adjusted by using a left-right adjusting jacking block; the upper beam is jacked by utilizing the upper and lower adjusting jackscrews, and the height of the roller changing trolley adjusted by the adjusting backing plates is increased or reduced to be the same as that of the lower frame (the height of the trolley can be shortened by 2mm when the roller system is disassembled).

4. The fixed roll lower frame is connected by a single-hook pulley and a double-hook pulley, the single-hook pulley is fixed on a roll changing trolley traction support, a hook at one end of the double-hook pulley is connected with a roll system, a steel wire rope bypasses the double-hook pulley and then bypasses the single-hook pulley, and the tail end of the steel wire rope is connected with the other end of the double-hook pulley.

5. And (3) using a winch to draw the fixed roll system to a target position on the roll changing trolley, and using side supports for limiting to prevent the roll system from sliding.

6. And (3) removing the connecting bolt of the roll changing trolley and the lower frame, dragging the fixed roll lower frame and the roll changing trolley to the position of the limiting bracket by using a winch, and fixing the roll changing trolley and the limiting bracket by using the bolt. During the traction process, the electromagnetic drum brake can be used for braking and fine adjustment at any time.

7. And (4) detaching the pulleys connected with the roller system, hanging out the fixed roller system in the fixed roller lower frame, and then continuously transporting out the movable roller system.

8. The upper frame is continuously hoisted in the whole process until the roller system is installed again.

The specific operation steps for loading the roller system are as follows:

1. firstly, the roll changing trolley and the limiting bracket are fixed by bolts, the upper beam is jacked by utilizing the upper and lower adjusting jackscrews, and the height of the roll changing trolley is adjusted to be the same as that of the lower frame by adding or reducing the adjusting base plate (the height of the roll changing trolley can be 2mm when the roll system is installed).

2. And hoisting the repaired movable roll system on a roll changing trolley, and using a side support for fixing.

3. Two single-hook pulleys are installed on the side stand column of the movable roller, a hook at one end of each double-hook pulley is connected with the roller system of the movable roller, and a steel wire rope respectively bypasses two groups of single-hook pulleys and the movable pulley and is finally connected with a hook at the other end of each double-hook pulley.

4. And removing the bolts connecting the roll changing trolley and the limiting bracket, using a winch to draw the movable roll system and the roll changing trolley together to the fixed roll side frame, using the bolts to connect the roll changing trolley and the fixed roll side frame, and removing the side support. During the traction process, the electromagnetic drum brake can be used for braking and fine adjustment at any time.

5. And (4) drawing the movable roller system to a target position, removing the single-hook pulley, and continuously loading the movable roller system into the fixed roller system according to the step.

6. And finally, removing the connecting bolt of the roll changing trolley and the lower frame, and drawing the roll changing trolley to the position of the limiting bracket and fixedly connecting the roll changing trolley.

7. And (3) loading the fixed roll side upright columns, putting down the upper frame, installing all bolts and positioning pins, installing oil passages, water pipes and hydraulic oil cylinder connecting bolts, and debugging the running roller mill.

The roller system comprises a movable roller system and a fixed roller system, and the fixed roller side upright post, the movable roller side upright post, the upper frame, the fixed roller side frame and the lower frame are the specific structures of the high-pressure roller mill, and the high-pressure roller mill can refer to the existing high-pressure roller mill.

Compared with the prior art, the utility model discloses can obtain following technological effect:

the roll changing equipment is divided into a traction driving system, a steel wire rope, a pulley block, a track, a roll changing trolley and other structures. When maintaining and replacing the roller system, firstly detaching the stand column of the high-pressure roller mill stand, adjusting the roller changing trolley to be flush with the lower beam of the stand, and fixedly connecting the roller changing trolley with the stand; then winding the positions of the steel wire rope, the pulley block and the roller system, starting a traction driving system to draw the roller system onto a roller changing trolley, and limiting; then the roll changing trolley is dismounted and the bolt fixedly connected with the frame; and continuously starting the traction driving system to draw the roller system and the roller changing trolley to a target position along the track, fixedly connecting the roller changing trolley, hoisting the roller system by using a crane, and loading and transferring.

After maintaining or replacing the roller system, the roller system is installed into the main frame according to the reverse direction of the steps.

The roll changing equipment can avoid the installation of a large hoisting crane in a production workshop of the high-pressure roller mill, thereby reducing the investment and construction cost of a factory building; meanwhile, the roller system is convenient to use and maintain, can be moved to a wide position outside a factory building and lifted by a crane, and the overhauling, maintaining and operation use efficiency of the high-pressure roller mill is improved; furthermore, the roll changing trolley has an adjustable structure in an up-down layering way, and the upper beam can be adjusted left and right, up and down relative to the lower frame column, so that the roll changing trolley is convenient and easy to use; furthermore, the roll changing trolley is provided with a drum brake structure, so that the use is safe and convenient.

In the whole roll changing process:

firstly, the roller changing equipment of the high-pressure roller mill is convenient to use when maintaining and changing a roller system, all work can be completed only by matching the roller changing trolley with an outdoor crane and a transport truck, the construction cost and the maintenance cost of a factory building are greatly reduced, and the operation use efficiency of the high-pressure roller mill is improved;

furthermore, the traction force of the roller changing equipment in a pulley block winding mode when the roller changing equipment pulls the roller system is only one third of the friction force, the specification of the winch is reduced, and the manufacturing cost is saved.

Further, the roll changing trolley in the roll changing equipment can be adjusted in height and lateral direction, and meanwhile has a lateral direction and traction direction limiting structure, so that the roll changing trolley is very convenient to use, and influences caused by civil engineering size deviation can be eliminated. The adjusting process is very convenient, the height adjustment only needs to be carried out in an idle state, the upper beam is jacked by using the upper and lower adjusting jackscrews, and then the adjusting base plate is plugged (the adjusting base plate is provided with a slotted hole, can be conveniently placed from the outer side and cannot be influenced by the position of the bolt); the lateral adjustment only needs to adjust the left-right adjusting jackscrew to adjust the upper beam left and right, so that the central line of the upper beam is the same as that of the bearing seat. The roller-changing trolley wheel train structure uses heavy-load rail wheels and heavy-load rails, and the bearing capacity is up to 200t.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a layout diagram of the whole installation structure of the high-pressure roller mill roller changing equipment in embodiment 1 of the invention;

FIG. 2 is a partial structural layout diagram of the roll changing equipment of the high-pressure roller mill of embodiment 1 of the invention;

FIG. 3 is a schematic structural view of a roll-changing cart in embodiment 1 of the present invention;

fig. 4 is a schematic structural view of a roll changing trolley in embodiment 2 of the invention;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a front view of a roll changing cart according to embodiment 2 of the present invention;

fig. 7 is an enlarged view of a portion B of fig. 6.

In the figure: 1-a base; 2-a winch; 3-a limit bracket; 4-orbit; 5-a steel wire rope; 6-roll changing trolley; 7-single hook pulley; 8-double hook pulley; 9-a main frame; 10-upper beam; 11-side support; 12-limiting and supporting; 13-a traction support; 14-adjusting the backing plate; 15-brake wheel train; 16-a mounting bracket; 17-an electromagnetic drum brake; 18-lower frame column; 19-adjusting the jackscrew left and right; 20-adjusting the jackscrew up and down; 21-a rolling wheel train; 22-a lower plate; 23-an auxiliary connecting rope; 24-fixing the first plate; 25-fixing plate II; 26-a drive gear; 27-a transverse rack; 28-hollow cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The application of the principles of the present invention will be further described with reference to the accompanying drawings and specific embodiments.

Example 1:

as shown in fig. 1 to 3, for an embodiment of the present invention, a roller changing device for a high pressure roller mill comprises an external base 1, a winch 2 and a track 4, wherein the external base 1 is provided with the winch 2, the track 4 is provided with a limiting bracket 3 relative to a driving part, the limiting bracket 3 is provided with a positioning hole, the track 4 is provided with a roller changing trolley 6, the roller changing trolley 6 moves on the track 4, the output end of the winch 2 is provided with a steel wire rope 5, and the steel wire rope 5 is respectively wound with a double-hook pulley 8 and a single-hook pulley 7;

the roll changing trolley 6 comprises an upper beam 10, a main frame 9 and a gear train, wherein the main frame 9 is provided with two longitudinal end parts, a lower frame column 18 is arranged in the middle of the main frame 9, and the upper beam 10 positioned at the upper part and the gear train positioned at the bottom are respectively arranged at the two end parts;

the upper beam 10 is provided with side supports 11 and limit supports 12, the side supports 11 and the limit supports 12 are respectively detachably connected with the upper beam 10, two groups of side supports 11 are respectively arranged on each group of upper beams 10 and are oppositely arranged, and the side supports 11 and the limit supports 12 are suitable for being abutted to the lower rack 100 of the roller system;

a left-right adjusting jackscrew 19 and an up-down adjusting jackscrew 20 are respectively installed on two sides of the main frame 9, the left-right adjusting jackscrew 19 is suitable for transversely adjusting the position of the upper beam 10, and the up-down adjusting jackscrew 20 is suitable for vertically adjusting the position of the upper beam 10.

As shown in fig. 3, a mounting bracket 16 is mounted at the bottom of the lower frame column 18, the mounting bracket 16 is detachably connected with the main frame 9, and an electromagnetic drum brake 17 is mounted at the bottom of the mounting bracket 16;

the wheel train is provided with four groups distributed at the bottom of the main frame 9, the wheel train comprises a rolling wheel train 21 and a braking wheel train 15, the rolling wheel train 21 is connected with the braking wheel train 15, and the electromagnetic drum brake 17 is suitable for limiting the braking wheel train 15.

In a further technical scheme, adjusting base plate 14 is installed to the bottom of adjusting jackscrew 20 from top to bottom, adjusting base plate 14 is provided with multiunit and thickness the same, the multiunit adjusting base plate 14 is suitable for the stack and all has seted up the connecting hole, adjust jackscrew 20 from top to bottom and be suitable for to install in the connecting hole. The up-down adjusting jackscrew 20 and the left-right adjusting jackscrew 19 can realize the micro movement of 5mm-20 mm.

In a further technical scheme, a traction bracket 13 is mounted on the upper beam 10, a traction hole is formed in the traction bracket 13, and a fixing hole is mounted at the bottom of the traction bracket 13; the side of the main frame 9 is provided with a lower plate 22, and the lower plate 22 and the traction bracket 13 are fixed by fixing bolts.

As shown in fig. 2, in order to reduce the friction force of direct pulling, one end of the steel wire rope 5 away from the winch 2 is suitable for being wound with a group of double-hook pulleys 8, and one group of single-hook pulleys 7 are connected to the end of the double-hook pulleys 8, one end of the double-hook pulleys 8 away from the single-hook pulleys 7 is provided with an auxiliary connecting rope 23 and is fixed to the bottom of the roller system lower frame 100, and hooks of the single-hook pulleys 7 are suitable for being connected into traction holes of the traction bracket 13.

The working steps refer to the steps of disassembling and assembling the roller system.

Example 2

As shown in fig. 4 to 7, for another embodiment of the present invention, on the basis of example 1, in order to enlarge the bearing position of the upper beam 10, hollow cavities 28 are installed at both ends of the main frame 9, a first fixed plate 24 and a second fixed plate 25 are installed in the hollow cavities 28, the first fixed plate 24 and the second fixed plate 25 are both fixedly connected to the main frame 9, the left-right adjusting jackscrew 19 is adapted to pass through the first fixed plate 24 and the second fixed plate 25 and is internally provided with a driving gear 26, a transverse rack 27 is adapted to be installed at the top in the hollow cavities 28, and the driving gear 26 is adapted to be upwards meshed with the transverse rack 27, as shown in fig. 7.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. The roll changing equipment of the high-pressure roller mill is characterized in that: the roll changing trolley comprises an external base (1), a winch (2) and a track (4), wherein the winch (2) is installed on the external base (1), a limiting support (3) is installed on the track (4) relative to a driving part, a positioning hole is formed in the limiting support (3), a roll changing trolley (6) is installed on the track (4), the roll changing trolley (6) moves on the track (4), a steel wire rope (5) is installed at the output end of the winch (2), a double-hook pulley (8) and a single-hook pulley (7) are wound on the steel wire rope (5) respectively, and the roll changing trolley (6) is pulled to move;

the roll changing trolley (6) comprises an upper beam (10), a main frame (9) and a wheel train, wherein the main frame (9) is provided with two longitudinal end parts, a lower frame column (18) is arranged in the middle of the main frame, and the upper beam (10) positioned at the upper part and the wheel train positioned at the bottom are arranged at the two end parts;

the upper beam (10) is provided with side supports (11) and limiting supports (12), the side supports (11) and the limiting supports (12) are respectively detachably connected with the upper beam (10), two groups of side supports (11) are respectively arranged on each group of upper beams (10) and are oppositely arranged, and the side supports (11) and the limiting supports (12) are suitable for being abutted to the lower rack (100) of the roller system;

left and right adjusting jackscrews (19) and upper and lower adjusting jackscrews (20) are respectively installed on two sides of the main frame (9), the left and right adjusting jackscrews (19) are suitable for transversely adjusting the position of the upper beam (10), and the upper and lower adjusting jackscrews (20) are suitable for vertically adjusting the position of the upper beam (10).

2. A high pressure roller mill roll change apparatus according to claim 1, characterized in that: the bottom of the lower frame column (18) is provided with an installation support (16), the installation support (16) is detachably connected with the main frame (9), and the bottom of the installation support (16) is provided with an electromagnetic drum brake (17);

the gear train is provided with four groups of gear trains distributed at the bottom of the main frame (9), each gear train comprises a rolling gear train (21) and a braking gear train (15), the rolling gear trains (21) are connected with the braking gear trains (15), and the electromagnetic drum brake (17) is suitable for limiting the braking gear trains (15).

3. The high pressure roller mill roll changing apparatus according to claim 1, characterized in that: adjusting base plate (14) are installed to the bottom of adjusting jackscrew (20) from top to bottom, adjusting base plate (14) are provided with multiunit and thickness the same, and the multiunit adjusting base plate (14) are suitable for the stack and all seted up the connecting hole, adjust jackscrew (20) from top to bottom and be suitable for and install in the connecting hole.

4. A high pressure roller mill roll change apparatus according to claim 1, characterized in that: a traction support (13) is arranged on the upper beam (10), a traction hole is formed in the traction support (13), and a fixing hole is formed in the bottom of the traction support (13); and a lower plate (22) is installed on the side edge of the main frame (9), and the lower plate (22) and the traction support (13) are suitable for being fixed through fixing bolts.

5. A high pressure roller mill roll change apparatus according to claim 1, characterized in that: one end, far away from hoist engine (2), of wire rope (5) is suitable for the wiring to have a set of double hook pulley (8), connect the tip at double hook pulley (8) behind a set of single hook pulley (7), double hook pulley (8) are kept away from the one end of single hook pulley (7) and are installed vice connecting rope (23) and fixed with the bottom of roller system lower rack (100), the lifting hook of single hook pulley (7) is suitable for to connect in the traction hole on traction support (13).

6. The high pressure roller mill roll changing apparatus according to claim 1, characterized in that: cavity (28) in main frame (9) both ends are installed, install fixed plate (24) and fixed plate two (25) in cavity (28), fixed plate (24) and fixed plate two (25) all with main frame (9) fixed connection, it is suitable for passing fixed plate (24) and fixed plate two (25) and inwards installs drive gear (26) to control regulation jackscrew (19), top is suitable for installing horizontal rack (27) in cavity (28), drive gear (26) are suitable for upwards to mesh with horizontal rack (27).

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