Auxiliary dismounting and mounting equipment for paper machine scraper

Abstract

The auxiliary dismounting and mounting equipment for the paper machine scraper comprises a first supporting seat, a second supporting seat and a connecting rod, the first supporting seat and the second supporting seat are fixedly connected with the connecting rod in the length direction of the connecting rod, and a first rolling mechanism is arranged on the top face of the first supporting seat; the first rolling mechanism is used for making rolling contact with a scraper to be disassembled and assembled, a first arc-shaped structure is arranged on the bottom face of the first supporting base, and the first arc-shaped structure is matched with the drying cylinder in shape and used for being in lap joint fit with the surface of the drying cylinder. A second rolling mechanism is arranged on the top face of the second supporting seat and used for making rolling contact with a scraper to be disassembled and assembled, a second arc-shaped structure is arranged on the bottom face of the second supporting seat, and the second arc-shaped structure is matched with the drying cylinder in shape and used for being matched with the surface of the drying cylinder in a lap joint mode. According to the auxiliary dismounting and mounting equipment for the paper machine scraper, the scraper can be rapidly pulled out and fed in, and the auxiliary dismounting and mounting equipment has the advantages of being simple in structure and convenient to operate.

Description

Technical Field

[0001] The present application relates to the technical field of paper machine maintenance equipment, and in particular to an auxiliary disassembly and assembly device for a paper machine scraper. Background Art

[0002] In papermaking, textile, printing and similar industries, the drying cylinder is one of the key equipments, which bears the important responsibility of removing moisture from the surface of the product and promoting the drying process. The dryer scraper, as an important auxiliary tool in the dryer system, mainly has the following functions: removing residues and moisture, maintaining uniform heat transfer efficiency, protecting the dryer surface, improving production efficiency, and promoting energy conservation and emission reduction. It is of great significance to improve product quality, extend the service life of the dryer, and maintain the stable operation of the production line. Therefore, enterprises attach great importance to the selection, installation and maintenance of dryer scrapers to ensure that they are always in the best working condition.

[0003] In a papermaking workshop, there are about more than one hundred sets of scrapers in use on one production line. However, the air hood is exposed to high temperature, high humidity, chemicals (chloride ions) and other harsh conditions all year round, which causes the paint on the scraper surface to age and fall off. The exposed scraper surface continues to corrode and cause rust to fall off. The paint and rust that fall off the scraper surface fall on the surface of the paper, directly causing holes and paper breaks, and quality abnormalities when a small amount of rust falls, resulting in downgrade and re-copying losses. There is also a potential risk of secondary damage to the equipment.

[0004] In order to solve the problems of paint peeling and rust falling, we have adopted the solution of manual grinding and maintenance on the machine due to limited downtime. The grinding and maintenance work efficiency is low. Secondly, after the paint is removed, it is not conducive to the anti-corrosion protection of the scraper body. At the same time, long-term high-temperature operation in the drying cylinder is easy to cause heatstroke to personnel and may cause secondary damage to other equipment. The long-term and reliable solution is to paint the scraper body according to the factory scraper standard operation. The main difficulty lies in the extraction and installation of the scraper frame.

[0005] However, when replacing the scraper, the upper and lower scrapers have narrow operating space, the air hood is in a high temperature environment, and it is difficult for personnel to wear slings and the operation is dangerous. Each time a lower scraper is replaced, a dry net needs to be cut, so a scraper is replaced each time when the net is changed, but the number of lower scrapers that need to be replaced is large. The upper roller scraper is barely replaced by three-chain hoisting and crane operation. The replacement time of the upper roller scraper is as long as 8 hours / piece or even longer, and the dry net will be deformed after hanging the sling. The dry net has to be replaced when starting the machine, which seriously affects the startup. It is difficult to find a fulcrum for the lower roller scraper and it is basically impossible to replace it. Summary of the invention

[0006] An embodiment of the present application provides an auxiliary disassembly and assembly device for a paper machine scraper, the auxiliary disassembly and assembly device comprising a first support seat, a second support seat and a connecting rod, the first support seat and the second support seat are respectively fixedly connected to the connecting rod along the length direction of the connecting rod, the top surface of the first support seat is provided with a first rolling mechanism, the first rolling mechanism is used for rolling contact with the scraper to be disassembled, the bottom surface of the first support seat is provided with a first arc structure, the first arc structure is adapted to the shape of a drying cylinder, and is used for overlapping cooperation with the surface of the drying cylinder; the top surface of the second support seat is provided with a second rolling mechanism, the second rolling mechanism is used for rolling contact with the scraper to be disassembled, the bottom surface of the second support seat is provided with a second arc structure, the second arc structure is adapted to the shape of the drying cylinder, and is used for overlapping cooperation with the surface of the drying cylinder.

[0007] In some embodiments, the auxiliary disassembly and assembly equipment further includes a third support seat, and the first support seat, the second support seat and the third support seat are respectively fixedly connected to the connecting rod along the length direction of the connecting rod.

[0008] In some embodiments, a third rolling mechanism is provided on the top surface of the third support seat, and the third rolling mechanism is used for rolling contact with the scraper to be disassembled and assembled. A third arc structure is provided on the bottom surface of the third support seat, and the third arc structure is adapted to the shape of the drying cylinder and is used to overlap with the surface of the drying cylinder.

[0009] In some embodiments, the first rolling mechanism, the second rolling mechanism and the third rolling mechanism all include a bracket and a roller. The roller is connected to the support seat through the bracket and is used for rolling contact with the scraper to be disassembled.

[0010] In some embodiments, the first support base, the second support base, and the third support base each include a plurality of rolling mechanisms.

[0011] In some embodiments, the connecting rod includes two parallel first connecting rods and second connecting rods, and the first support seat, the second support seat and the third support seat are fixedly connected to the first connecting rod and the second connecting rod respectively along the length direction of the first connecting rod and the second connecting rod.

[0012] In some embodiments, rubber pads are disposed on surfaces of the first arc-shaped structure, the second arc-shaped structure, and the third arc-shaped structure.

[0013] In some embodiments, the auxiliary disassembly and assembly equipment also includes an auxiliary bracket, which includes a lifting bracket and a support, the support is fixedly connected to the lifting bracket, the lifting bracket is used to connect to the sling, and the support is used to support the scraper to be disassembled.

[0014] In some embodiments, the bracket is used to provide a rubber barrier layer on the surface that contacts the scraper to be disassembled.

[0015] In some embodiments, lifting ears are respectively provided at both ends of the lifting bracket.

[0016] The auxiliary disassembly and assembly equipment of the paper machine scraper provided in the embodiment of the present application is designed with a support seat structure, the bottom surface of which uses the contact with the surface of the drying cylinder as a fulcrum, and then a rolling mechanism is designed on the top surface for rolling contact with the scraper to be disassembled, so that the scraper can be quickly withdrawn and inserted, and has the characteristics of simple structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the auxiliary disassembly and assembly equipment of the present application in cooperation with a paper machine;

[0019] Figure 2 yes Figure 1 A schematic diagram of a local structure in an embodiment;

[0020] Figure 3 yes Figure 2 Schematic diagram of another perspective of the structure;

[0021] Figure 4 It is a structural schematic diagram of an embodiment of the auxiliary disassembly and assembly equipment of the present application;

[0022] Figure 5 It is a structural schematic diagram of the second (third) support seat of the auxiliary disassembly and assembly equipment of the present application;

[0023] Figure 6 This is a schematic diagram of the structure of an auxiliary bracket embodiment of the present application in cooperation with a scraper;

[0024] Figure 7 It is a structural schematic diagram of another embodiment of the auxiliary bracket of the present application in cooperation with a scraper. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0026] The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", and "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of the present application and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products, or devices.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] Please also read Figures 1 to 3 , Figure 1 This is a structural schematic diagram of an embodiment of the auxiliary disassembly and assembly equipment of the present application in cooperation with a paper machine. Figure 2 yes Figure 1 A schematic diagram of a local structure in an embodiment, Figure 3 yes Figure 2Schematic diagram of another perspective of the structure; wherein the paper machine includes a plurality of drying cylinders (and rollers, etc.) 200, and the drying cylinders (and rollers, etc.) 200 may have different diameters. The scraper 300 is arranged adjacent to the drying cylinders 200 and inserted between the adjacent plurality of drying cylinders 200. The auxiliary disassembly and assembly device 100 in the embodiment of the present application is mainly used to drag or insert the scraper 300 to be disassembled from the narrow gap space between the adjacent drying cylinders 200.

[0029] Please also read Figure 4 , Figure 4 1 is a schematic diagram of the structure of an embodiment of the auxiliary disassembly and assembly device of the present application, wherein the auxiliary disassembly and assembly device 100 in this embodiment includes a first support seat 110, a second support seat 120, a third support seat 130 and a connecting rod 140. It should be noted here that the auxiliary disassembly and assembly device 100 in the embodiment of the present application only schematically shows a structure including the first support seat 110, the second support seat 120 and the third support seat 130. In other embodiments, the auxiliary disassembly and assembly device 100 may include only the first support seat 110 and the second support seat 120, or include more groups of support seats, which will not be listed and described in detail here.

[0030] Specifically, the first support seat 110, the second support seat 120 and the third support seat 130 in this embodiment are respectively fixedly connected to the connecting rod 140 along the length direction of the connecting rod 140, and can be specifically connected by bolts. Optionally, the connecting rod 140 in this embodiment can include two parallel first connecting rods 141 and second connecting rods 142, and the first support seat 110, the second support seat 120 and the third support seat 130 are respectively fixedly connected to the first connecting rod 141 and the second connecting rod 142 along the length direction of the first connecting rod 141 and the second connecting rod 142.

[0031] Optionally, the first support seat 110, the second support seat 120 and the third support seat 130 in this embodiment may have the same or similar structures (only the position of the roller is slightly different). The illustration of this embodiment only focuses on one of them, and the other two are similar or slightly different in structure. Among them, the top surface of the first support seat 110 is provided with a first rolling mechanism 111, and the first rolling mechanism 111 is used for rolling contact with the scraper 300 to be disassembled and assembled. The bottom surface of the first support seat 110 is provided with a first arc structure 112, and the first arc structure 112 is adapted to the shape of the drying cylinder 200 and is used to overlap with the surface of the drying cylinder 200; wherein, the first arc structure 112 in this embodiment may be located at both ends of the first support seat 110, and the curvature of the first arc structure 112 at both ends may be different to adapt to drying cylinders or rollers of different diameters, etc., and the surface of the first arc structure 112 is provided with a rubber pad 150, and the rubber pad 150 is used to prevent the surface of the drying cylinder 200 from being scratched.

[0032] The first rolling mechanism 111 in this embodiment may include a bracket 1111 and a roller 1112, the roller 1112 is connected to the first support seat through the bracket 1111, and the roller 1112 is used for rolling contact with the scraper to be disassembled. Optionally, in this embodiment, each support seat may include a plurality of first rolling mechanisms 111, and the specific structure, shape, arrangement direction and position of the first rolling mechanism 111 are different according to different contact surfaces with the scraper to be disassembled or scrapers of different specifications, which will not be described here.

[0033] See also Figure 5 , Figure 5 It is a schematic diagram of the structure of the second (third) support seat of the auxiliary disassembly and assembly equipment of the present application, wherein the structure of the second support seat 120 is similar to that of the first support seat 110, and its top surface may also be provided with a second rolling mechanism 121, and the second rolling mechanism 121 is used for rolling contact with the scraper to be disassembled. The second rolling mechanism 121 may also include a bracket 1111 and a roller 1112, and the roller 1112 is connected to the first support seat through the bracket 1111, and the roller 1112 is used for rolling contact with the scraper to be disassembled. The bottom surface of the second support seat 120 is provided with a second arc structure 122, and the second arc structure 122 is adapted to the shape of the drying cylinder 200, and is used to overlap and cooperate with the surface of the drying cylinder 200.

[0034] A third rolling mechanism 131 is provided on the top surface of the third support seat 130, and the third rolling mechanism 131 is used for rolling contact with the scraper 300 to be disassembled and assembled. A third arc structure 132 is provided on the bottom surface of the third support seat 130, and the third arc structure 132 is adapted to the shape of the drying cylinder 200 and is used for overlapping cooperation with the surface of the drying cylinder 200.

[0035] The first rolling mechanism 111, the second rolling mechanism 121 and the third rolling mechanism 131 all include a bracket 1111 and a roller 1112, the roller is connected to the support seat through the bracket, and is used to roll with the scraper 300 to be disassembled. The first support seat 110, the second support seat 120 and the third support seat 130 can all include multiple rolling mechanisms. The surfaces of the first arc structure 112, the second arc structure 122 and the third arc structure 132 can all be provided with a rubber pad 150.

[0036] Among them, the structure of the first support seat can be different from that of the second / third support seat. In view of the difference in the upper / lower structures, because the lower scraper is easy to rotate after the fixing device is removed, the scraper clamp of the scraper is easy to scratch the surface of the upper drying cylinder. Therefore, in addition to the function of sliding and pulling out the upper scraper, the first support seat also has a fixed positioning function, so that the upper scraper will not rotate when it is pulled out (the setting position and number of the first rolling mechanism 111 of the first support seat (the position structure of the rolling mechanism marked 1118) are different from those of the second / third support seat). According to the scraper pulling out direction, the first support seat structure is installed on the outermost side of the pulling out direction, and the second / third support seat structure is installed on the innermost side of the pulling out direction. For example, if the scraper is pulled out to the right, the first support seat is installed on the rightmost side of the scraper, and the second / third support seat is installed on the leftmost side. The left side structure of the first support seat structure is the same as the second / third support seat structure, but the right bracket roller structure on the right side can be different from the second / third support seat. Its structure is the same as the left bracket roller on the right side of the first support seat. It is symmetrically installed with the upper scraper, and the rollers on the left and right sides are at a certain angle, so that the upper scraper can be stably fixed on the roller and slide.

[0037] In addition, the auxiliary disassembly and assembly equipment in the embodiment of the present application may also include an auxiliary bracket, please refer to Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of the structure of an auxiliary bracket embodiment of the present application in cooperation with a scraper. Figure 7 1 is a schematic diagram of the structure of another embodiment of the auxiliary bracket of the present application in cooperation with the scraper, wherein the auxiliary bracket 400 includes a hanging bracket 410 and a bracket 420, the bracket 420 is fixedly connected to the hanging bracket 410, the hanging bracket 410 is used to connect with the hanger (or sling) 500, and the bracket 420 is used to support the scraper 300 to be disassembled. The shape of the bracket 420 can be different according to different contact surfaces with different scrapers or scrapers of different specifications, which is not specifically limited here.

[0038] The bracket 420 is used to set a rubber interlayer 421 on the surface in contact with the scraper 300 to be disassembled, which plays a role in buffering and shock absorption and protecting the scraper 300. In addition, the surface of the rubber interlayer 421 in contact with the scraper is relatively rough to increase friction, which is convenient for pulling out the scraper later. The two ends of the hanging bracket 410 are respectively provided with lifting ears 411, and the hanging bracket 410 is connected to the hanging device 500 through the lifting ears 411.

[0039] The following will introduce the use method and working process of the auxiliary disassembly and assembly equipment in the embodiment of the present application. First, stop the drying cylinder, and then have the auxiliary disassembly and assembly equipment placed on the drying cylinder by workers. After the placement is completed, the scraper bodies on both sides can be placed on the auxiliary disassembly and assembly equipment in turn, and the 1 / 3 part of the scraper 300 can be manually pulled out to the outside of the air hood (outside the gap of the drying cylinder 200), and then pulled out through the auxiliary bracket 400 in conjunction with the hoisting crane and other equipment (specifically, the auxiliary bracket 400 can be installed when the scraper is to be pulled out, and the scraper can be further pulled out to 2 / 3 by the crane, and the auxiliary bracket on the other side can be installed, and then the scraper is completely pulled out to complete the scraper removal action), and the installation is the opposite.

[0040] The paper machine scraper auxiliary disassembly and assembly equipment in the embodiment of the present application can solve the problems of paint and rust falling from the scraper body and falling on the paper surface, causing holes and paper breaks, and quality abnormalities causing degradation and re-copying losses, and can achieve rapid and batch replacement of the scraper body. It can easily realize the extraction / installation of the scraper body, and is generally applicable to upper and lower scraper bodies in various working conditions. After the equipment is installed, the scraper body quick release device is hung, and the scraper body replacement speed can be reduced from the original 8h / piece to less than 2h / piece at the fastest. The equipment maintenance time is greatly reduced by more than 75%, and the degree of wear of the supporting dry net can be reduced by about 90% compared with the past. The abnormal shutdown of the equipment caused by the falling of paint flakes and other problems can be effectively reduced by about 95%. At the same time, it greatly reduces the intensity of manual work, and has achieved good working results in actual production.

[0041] The auxiliary disassembly and assembly equipment of the paper machine scraper provided in the embodiment of the present application is designed with a support seat structure, the bottom surface of which uses the contact with the surface of the drying cylinder as a fulcrum, and then a rolling mechanism is designed on the top surface for rolling contact with the scraper to be disassembled, so that the scraper can be quickly withdrawn and inserted, and has the characteristics of simple structure and easy operation.

[0042] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A paper machine scraper auxiliary disassembly and assembly device, characterized in that: The auxiliary disassembly and assembly equipment includes a first support seat, a second support seat and a connecting rod, the first support seat and the second support seat are respectively fixedly connected to the connecting rod along the length direction of the connecting rod, the top surface of the first support seat is provided with a first rolling mechanism, the first rolling mechanism is used for rolling contact with the scraper to be disassembled, the bottom surface of the first support seat is provided with a first arc structure, the first arc structure is adapted to the shape of the drying cylinder, and is used for overlapping cooperation with the surface of the drying cylinder; the top surface of the second support seat is provided with a second rolling mechanism, the second rolling mechanism is used for rolling contact with the scraper to be disassembled, and the bottom surface of the second support seat is provided with a second arc structure, the second arc structure is adapted to the shape of the drying cylinder, and is used for overlapping cooperation with the surface of the drying cylinder.

2. The auxiliary disassembly and assembly equipment according to claim 1, characterized in that: The auxiliary disassembly and assembly equipment also includes a third support seat, and the first support seat, the second support seat and the third support seat are fixedly connected to the connecting rod in sequence along the length direction of the connecting rod.

3. The auxiliary disassembly and assembly equipment according to claim 2, characterized in that: A third rolling mechanism is provided on the top surface of the third support seat, and the third rolling mechanism is used for rolling contact with the scraper to be disassembled and assembled. A third arc structure is provided on the bottom surface of the third support seat, and the third arc structure is adapted to the shape of the drying cylinder and is used to overlap with the surface of the drying cylinder.

4. The auxiliary disassembly and assembly equipment according to claim 3, characterized in that: The first rolling mechanism, the second rolling mechanism and the third rolling mechanism all include a bracket and a roller. The roller is connected to the support seat through the bracket and is used for rolling contact with the scraper to be disassembled.

5. The auxiliary disassembly and assembly equipment according to claim 4, characterized in that: The first support seat, the second support seat and the third support seat each include a plurality of rolling mechanisms.

6. The auxiliary disassembly and assembly equipment according to claim 2, characterized in that: The connecting rod includes two parallel first connecting rods and a second connecting rod, and the first supporting seat, the second supporting seat and the third supporting seat are fixedly connected to the first connecting rod and the second connecting rod respectively along the length direction of the first connecting rod and the second connecting rod.

7. The auxiliary disassembly and assembly equipment according to claim 3, characterized in that: Rubber pads are provided on the surfaces of the first arc-shaped structure, the second arc-shaped structure and the third arc-shaped structure.

8. The auxiliary disassembly and assembly equipment according to any one of claims 1 to 7, characterized in that: The auxiliary disassembly and assembly equipment also includes an auxiliary bracket, which includes a hanging bracket and a bracket, the bracket is fixedly connected to the hanging bracket, the hanging bracket is used to be connected to the hanger, and the bracket is used to support the scraper to be disassembled.

9. The auxiliary disassembly and assembly equipment according to claim 8, characterized in that: The bracket is used to provide a rubber barrier layer on the surface in contact with the scraper to be disassembled.

10. The auxiliary disassembly and assembly equipment according to claim 8, characterized in that: Lifting ears are respectively arranged at both ends of the lifting bracket.

Images