CN218540216U

CN218540216U - Structure for moving out felt tensioning roller under pressing part of paper machine

Info

Publication number: CN218540216U
Application number: CN202222037153.6U
Authority: CN
Inventors: 刘嚆; 高越; 郭惠萍; 张猛; 黄婷; 张裕福
Original assignee: China Haisum Engineering Co Ltd
Current assignee: China Haisum Engineering Co Ltd
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2023-02-28
Anticipated expiration: 2032-08-03

Abstract

The utility model discloses a shifting-out structure of a blanket tensioning roller under a squeezing part of a paper machine, wherein the lower blanket sleeve is arranged at the outer side of all rollers in a squeezing device, the basic structure of the squeezing device comprises a lower squeezing roller, a transfer box, guide rollers at two sides of the lower squeezing roller, a correction roller for correcting the track of the lower blanket, a tensioning roller, a tensioner and the like, the tensioning roller is arranged in the loop of the lower blanket, two ends of the tensioning roller are respectively connected with an electric capstan for hoisting the tensioning roller, and the electric capstan is driven by an operation button box; a pulley is respectively arranged between the two electric winches and the end part of the corresponding tensioning roller. The utility model provides a lower woollen blanket tensioning roller of no track shifts out structure, the utility model discloses a special design of stub axle tensioning roller, electric capstan and frame need not traditional horizontal calabash track, can reduce intensity of labour and the safe risk of workman's dismouting tensioning roller when changing down the woollen blanket to practice thrift the space, offer convenience with pipeline design for other equipment layout of periphery.

Description

Structure for moving out felt tensioning roller under pressing part of paper machine

Technical Field

The utility model relates to a structure that shifts out of woollen blanket tensioning roller under paper machine press portion specifically is a special design of tensioning roller and frame, belongs to papermaking mechanical equipment technical field.

Background

Large paper machines are usually arranged in two-story plants, two stories are used as a main equipment installation layer and an operation layer, and one story is usually used for arranging a part of lower felts of a pressing part, a part of lower drying net of a drying part, a broke pulper, an oil station, a pool slurry tank, a pump, pipelines, cables and the like. Since commercially available press felts are closed circles and most of the equipment in the lower felt loop is distributed in two layers and the tensioning rolls are distributed in one layer, the press felt must be inserted into the equipment loop above two layers from two layers when the lower felt is replaced. The traditional method is that before replacing the lower blanket, the tensioning roller is firstly detached, and then the tensioning roller is partially or completely pulled out to the transmission side by means of a hoist and a track, so that a gap is reserved between the inner side of a concrete beam of the paper machine on the operation side and a shaft head of the tensioning roller, and the tensioning roller can be sleeved in the lower blanket.

The traditional structure generally needs a steel beam track and an electric or manual hoist, and the design mode has a complex structure; the labor intensity is high when the tension roller is disassembled every time; during hoisting, the joint of the hoisting belt on the tension roller must be close to the central point of the tension roller, and a single hoist is used for hoisting, so that the risk of overturning is caused; no obstacle can be present in the range of the moving path of the tension roller. And the pressing part layer is a place where equipment and pipelines are relatively dense, and the space of the equipment, the pipelines, the cable bridge and the channel in the area is greatly occupied by the existence of the steel beam track and the moving path of the tension roller.

Disclosure of Invention

The utility model discloses the problem that will solve is: how to reduce the intensity of labour and the safety risk of workman dismouting tensioning roller when changing down the woollen blanket to save space, bring the facility for other equipment arrangements and pipeline design of periphery.

In order to solve the technical problem, the technical scheme of the utility model is that:

a shifting-out structure of a blanket tensioning roller under a squeezing part of a paper machine is characterized in that the blanket is sleeved outside all rollers in the squeezing device, a basic structure of the squeezing device is divided into a first layer part and a second layer part, the second layer part comprises a lower squeezing roller, a transfer box, guide rollers at two sides of the lower squeezing roller, a transverse cantilever steel beam and two longitudinal frame steel beams, the transverse cantilever steel beams and the two longitudinal frame steel beams are used for fixing the first part, the longitudinal frame steel beams are fixed on a base plate of a second floor, the first layer part comprises a correcting roller used for correcting the track of the lower blanket, a tensioning roller, a tensioner, a water suction box and two longitudinal frame steel beams, the two longitudinal frame steel beams are used for fixing the first part, the tensioning roller is arranged in the loop of the lower blanket, the tensioner is fixed on the longitudinal frame steel beams, two ends of the tensioning roller are respectively connected with an electric winch used for hoisting the tensioning roller between the first layer and the second layer of the basic structure, and the electric winch is driven by an operation button box; a pulley is respectively arranged between the two electric winches and the end part of the corresponding tensioning roller.

Preferably, the foundation structure comprises two foundation beams at the top and a foundation column below the two foundation beams.

Preferably, the length of the tension roller is simultaneously smaller than the distance between the first two longitudinal frame steel beams and the distance between the second two longitudinal frame steel beams.

More preferably, the length of the tension roller is less than the distance between two foundation beams. Ensure that the tension roller can be lifted from one layer to more than two layers.

Preferably, at least one water suction box for sucking water to the lower carpet is further arranged on the longitudinal frame steel beam II.

Preferably, the tension roller adopts a short-wheelbase tension roller.

Preferably, the electric winch, the operation button box and the pulley are arranged on the first longitudinal frame steel beam on the corresponding side.

Preferably, a safety device for preventing the tension roller from falling is further arranged on the longitudinal frame steel beam I.

Preferably, the safety device comprises a limiting device for limiting the position of the steel wire rope in the electric winch and a bolt or a lock catch, wherein one end of the bolt or the lock catch is connected with the longitudinal frame steel beam, and the other end of the bolt or the lock catch can be inserted into the end part of the tensioning roller.

Preferably, the operation button box is connected with an MCS system of the paper machine, the electric winch driven by the operation button box and the MCS system of the paper machine are mechanisms which are mutually in a start-stop interlocking condition, when one works, the other does not allow the work, and accidents are prevented.

The utility model discloses well effect of each part as follows:

the tensioner comprises a lead screw or chain transmission mechanism, a guide rail, a bearing seat bracket, a synchronous shaft, a driving motor and the like on an operation side and a transmission side. The driving motor provides power and transmits the power to the synchronizing shaft, and the synchronizing shaft transmits the power to the screw rod or chain transmission mechanism on the operation side and the transmission side to drive the bearing seat brackets on the two sides to move along the guide rail, so that the aim of adjusting the tension of the press felt is fulfilled.

The short-wheelbase tension roller is similar to a common guide roller and comprises a steel roller shell, a coating layer, an end cover, a shaft head, a bearing seat and the like. The difference is that the shaft head of the common guide roller usually extends out of the end surface of the roller shell for a long time, so the center distance of the bearing is long; the bearing distance of the short-wheelbase guide roller is very short, the distance of the outermost side of the bearing seat is smaller than the inner distance between the concrete girder of the squeezing part and the frame, and the tension roller can be lifted from the first floor to the second floor.

And the electric capstan is a standard product sold in the market, two sides of the electric capstan are respectively provided with one electric capstan, and synchronous control is performed to realize synchronous lifting of two sides of the tensioning roller. The two electric winches can be arranged on two sides of the operation transmission respectively or arranged on the same side after being converted by the pulleys.

The pulley is a standard product sold in the market, and mainly has the function of changing the direction of the steel wire rope to meet different winch installation positions.

The safety device comprises a brake, an anti-falling device and the like which are arranged on the winch, and also comprises a limiting device of a steel wire rope of the electric winch, so that the tension roller is prevented from impacting other parts to damage the roller when the winch is lifted to the highest and lowest positions. Also comprises a mechanical locking bolt or a safety lock catch for lifting the tension roller to the highest position, so as to prevent the tension roller from accidentally falling.

The operation button box is a controller of the electric capstan, a signal of the operation button box is connected into the MCS system of the paper machine, and the starting and stopping of the electric capstan and the running state of the paper machine are linked.

The utility model provides a structure is shifted out to lower woollen blanket tensioning roller of no track, and the tensioning roller need not the level and pulls out when changing down the woollen blanket, and is safe high-efficient, does not occupy the space of operation side and transmission side. The utility model discloses a special design of short wheel base tensioning roller, electric capstan and frame need not traditional horizontal calabash track, can reduce intensity of labour and the safety risk of workman's dismouting tensioning roller when changing down the woollen blanket to practice thrift the space, arrange and the pipeline design offers convenience for other peripheral equipment.

Drawings

FIG. 1 is an elevation view of a take-off structure for a blanket tension roll in the press section of a paper machine in accordance with the present invention;

FIG. 2 is a cross-sectional view taken along line I-I of FIG. 1 when the blanket is replaced.

FIG. 3 is a cross-sectional view taken along line I-I of FIG. 1 after blanket replacement.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

Examples

As shown in fig. 1-3, for the utility model provides a pair of structure that shifts out of woollen blanket tensioning roller under paper machine press portion, 2 covers of woollen blanket are located the outside of squeezing all rollers in the device down, and the foundation structure who squeezes the device divide into one deck part and two layer parts, and two layer parts are including squeezing lower roll 4, transfer case 5, squeezing deflector roll 1 of lower roll 4 both sides and being used for the horizontal cantilever girder steel 7 and two vertical frame girder steels 3 of fixed above part, vertical frame girder steel 3 and horizontal cantilever girder steel 7 are fixed in on the foundation plate of two layers floor. The one-layer part comprises a correction roller 9 for correcting the track of the lower blanket 2, a tension roller 13 (the tension roller 13 adopts a short-wheelbase tension roller), a tensioner 14, a water suction box 8 and a longitudinal frame steel beam II 11 for fixing the above parts, the tension roller 13 is arranged in the loop of the lower blanket 2, the tensioner 14 is fixed on the longitudinal frame steel beam II 11, two ends of the tension roller 13 are respectively connected with an electric capstan 15 for hoisting the tension roller 13 between the one layer and the second layer of the foundation structure, and the electric capstan 15 is driven by an operation button box 16; a pulley 17 is respectively arranged between the two electric winches 15 and the end part of the corresponding tension roller 13, and the longitudinal frame steel beam II 11 is fixed on the ground of one floor and the foundation column 10.

The foundation structure comprises two foundation beams 6 at the top of two layers and foundation columns 10 below the two foundation beams. The top of the base structure is two layers F2 and the bottom of the base structure is one layer F1.

The first longitudinal frame steel beam 3, the second longitudinal frame steel beam 11 and the transverse cantilever steel beam 7 which are used for fixing all components in the squeezing device form a frame, and the length of the tension roller 13 is simultaneously smaller than the distance between the first longitudinal frame steel beams 3 and the distance between the second longitudinal frame steel beams 11. The length of the tension roller 13 is also less than the distance between the two foundation beams 6. It is ensured that the tension roller 13 can be raised and lowered without hindrance in the space inside the foundation structure and between the two foundation beams 6.

And 2 water suction boxes 8 for sucking the lower blanket 2 are further arranged on the longitudinal second frame steel beam 11.

The electric capstan 15, the operation button box 16 and the pulley 17 are all arranged on the longitudinal frame steel beam I3. And a safety device 18 for preventing the tension roller 13 from falling is also arranged on the longitudinal frame steel beam I3.

The safety device 18 comprises a limiting device used for limiting the position of the steel wire rope in the electric capstan 15 and a bolt or a lock catch, one end of the bolt is connected with the longitudinal frame steel beam 3, and the other end of the bolt or the lock catch can be inserted into the end part of the tension roller 13.

The operation button box 16 is connected with the MCS system of the paper machine, and the electric capstan 15 driven by the operation button box 16 and the MCS system of the paper machine are mechanisms which are in start-stop interlocking condition.

The tensioning roller 13 is lifted to the floor of the second floor F2 above and below the lower squeezing roller 4 after passing over the foundation beam 6 and the frame 3 through the electric winch 15, so that the blanket 2 can be conveniently sleeved in without arranging a traditional horizontal track and occupying an extra space on an operation side or a transmission side.

When the lower blanket 2 is replaced, the old lower blanket 2 is cut off and removed; then the tension roller 13 is moved from the working position (position C) to the pre-hoisting position a; then hanging the hanging rings on the shaft heads on the two sides of the tensioning roller 13 by using the hanging hooks of the electric winches 15 on the two sides; then operating the button box 16 to control the electric winches 15 on the two sides to synchronously hoist, and lifting the tension roller 13 from the position A before hoisting to the position B after hoisting; for safety, the shaft head of the tension roller 13 is fixed by a bolt or a lock catch (namely, a safety device 18); then, a jack is arranged below a first longitudinal frame steel beam 3 on the operation side (in the figures 2 and 3, the left side is the operation side, and the right side is the transmission side), the first longitudinal frame steel beam 3 on the operation side is slightly jacked up by about 5mm, the drawing block 19 is guaranteed not to be stressed, then the drawing block 19 is dismantled and the jack is unloaded and removed, the first longitudinal frame steel beam 3 on the operation side can be kept in a suspended state through the lever action of a concrete beam 20 on the transmission side, a transverse cantilever steel beam 7, a pull rod 12 and the first longitudinal frame steel beam 3 on the transmission side, and then a new lower blanket 2 is sleeved into a position E outside a roller in the squeezing device from a position D (a rightward arrow in the figure 2 is a sleeving direction); and finally, repeating the steps according to the reverse order, restoring the tension roller 13 to the position A before the original position hoisting, and then unfolding the lower blanket 2 from the position E to the position F (figure 3) immediately, and finishing the replacement work of the lower blanket.

Claims

1. A moving-out structure of a blanket tensioning roller at the pressing part of a paper machine, wherein a lower blanket (2) is sleeved outside all rollers in a pressing device, the basic structure of the pressing device is divided into a first layer part and a second layer part, the second layer part comprises a lower pressing roller (4), a transfer box (5), guide rollers (1) at two sides of the lower pressing roller (4), a transverse cantilever steel beam (7) and two longitudinal frame steel beams (3), the transverse cantilever steel beams (7) and the two longitudinal frame steel beams (3) are used for fixing the above parts, the longitudinal frame steel beams (3) are fixed on the basic plates of two floors, the first layer part comprises a correcting roller (9) used for correcting the track of the lower blanket (2), a tensioning roller (13), a tensioner (14), a water suction box (8) and two longitudinal frame steel beams (11) used for fixing the above parts, the tensioning roller (13) is arranged in the loop of the lower blanket (2), the tensioner (14) is fixed on the longitudinal frame steel beams (11), and the moving-out structure is characterized in that two ends of the winch of the tensioning roller (13) are respectively connected with an electric hoisting button (15), and an electric hoisting button (16); a pulley (17) is respectively arranged between the two electric winches (15) and the end part of the corresponding tension roller (13).

2. The removing structure of the felt-tensioning roll under the press section of a paper machine as claimed in claim 1, characterized in that the base structure comprises two base beams (6) at the top and a base column (10) below.

3. The removal structure for the felt tensioning roll under the press section of a paper machine as claimed in claim 1, characterized in that the length of the tensioning roll (13) is simultaneously smaller than the distance between two longitudinal frame steel beams one (3) and the distance between two longitudinal frame steel beams two (11).

4. The removal structure of the felt tensioning roll under the press section of a paper machine according to claim 2, characterized in that the length of the tensioning roll (13) is less than the distance between two base beams (6).

5. The removal structure for the felt-tensioning roll of the press section of a paper machine as claimed in claim 1, characterized in that the longitudinal frame steel beams (11) are also provided with at least one suction box (8) for sucking water into the lower felt (2).

6. The removal structure for the felt-tensioner of the press section of a paper machine as claimed in claim 1, characterized in that said tensioner roll (13) is a short-wheelbase tensioner roll.

7. The removal structure of the felt-tensioning roll under the press section of a paper machine as claimed in claim 1, characterized in that the motorized winch (15), the operating button box (16) and the pulley (17) are all mounted on the longitudinal frame steel beam one (3) on the corresponding side.

8. The removal structure for the felt roll in the press section of a paper machine as claimed in claim 1, characterized in that the longitudinal frame steel beam one (3) is further provided with a safety device (18) for preventing the roll (13) from falling.

9. The removal structure for the felt-tensioning roll under the press section of a paper machine as claimed in claim 8, characterized in that said safety means (18) comprise means for limiting the position of the wire rope in the motorized winch (15) and a latch or catch connected at one end to the longitudinal frame steel beam one (3) and insertable at the other end into the end of the tensioning roll (13).

10. The removal structure for the blanket-tensioned-roll of the press section of a paper machine according to claim 1, characterized in that said operating-button box (16) is connected to the MCS-system of the paper machine, and the electric capstan (15) driven by the operating-button box (16) and the MCS-system of the paper machine are each a mechanism of interlocking start and stop.