Auxiliary system for paper machine dry net replacement and auxiliary equipment thereof

Abstract

The invention provides an auxiliary system for paper machine dry net replacement and auxiliary equipment thereof. The auxiliary equipment comprises a moving device, a supporting seat and a first rack base, the moving device comprises a support and moving wheels arranged at the bottom of the support. The supporting seat is arranged on the bracket; the first rack base is fixedly arranged on the supporting base and used for supporting a dry net winding roller. The auxiliary equipment for replacing the dry net of the paper machine is simple in structure and flexible and convenient to operate, the labor intensity in the dry net replacing process can be greatly reduced, and the efficiency of replacing the dry net of a drying cylinder part is improved.

Description

Technical Field

[0001] The invention relates to the technical field of paper machine maintenance equipment, and in particular to an auxiliary system and auxiliary equipment for replacing a paper machine dryer fabric. Background Art

[0002] Traditional wet papermaking is divided into fourdrinier papermaking machine, rotary screen papermaking machine and gap papermaking machine according to the structure of the paper sheet forming part. Both the fourdrinier and rotary screen use single-sided dehydration when forming the paper sheet, which easily causes the difference between the two sides of the paper sheet, while the gap papermaking machine uses spraying for double-sided dehydration at the same time, which effectively reduces the difference between the two sides of the paper sheet and improves the uniformity of the paper sheet.

[0003] The drying section is an important part of modern papermaking machines, and the dryer net is the key to the drying section. Its condition is directly related to papermaking energy consumption, product quality, etc. In particular, large-scale papermaking machines often use a single-hanging method for the dryer net. The length of the dryer net is greatly increased, and the weight is also increased. At the same time, the dryer net is also a consumable material and needs to be replaced regularly. At present, it takes more than one person to replace the dryer net. Put the new dryer net on a simple non-powered bracket, and then connect the new and old dryer nets. Use the paper machine dryer roller as the power for replacement. If the connection is not well coordinated, it is easy to block the net, and the new net will fall and scratch. Problems often occur in practice, because the roller motor needs to be in the control room, and there is a time difference between personnel communicating through intercoms. In another case, if the whole machine is powered off and the dryer roller is unpowered, the net needs to be manually dragged, which will require multiple people to work together, which is time-consuming and laborious. And in the final stage, you need to be more careful, and the team must cooperate well to avoid too fast speed and miss the head and tail connection. For this reason, it is particularly important to design a device that is easy to control on site and can reduce the intensity of net replacement. Summary of the invention

[0004] In a first aspect, an embodiment of the present application provides an auxiliary device for replacing a dryer fabric of a paper machine, the auxiliary device comprising:

[0005] A moving device, comprising a bracket and a moving wheel arranged at the bottom of the bracket;

[0006] A support seat, arranged on the bracket;

[0007] The first frame base is fixed on the support base, and the first frame base is used to support the dryer mesh roller.

[0008] In some embodiments, the auxiliary device further includes a rotating device, wherein the rotating device is disposed between the bracket and the support seat, and is used to realize relative rotation between the support seat and the bracket.

[0009] In some embodiments, the auxiliary device further includes an anti-rotation device, which is connected to the support base and is used to fix the support base after the auxiliary device is moved into place.

[0010] In some embodiments, the anti-rotation device includes a connecting arm and a screw rod, one end of the connecting arm is connected to the support seat, and the other end is connected to the screw rod.

[0011] In some embodiments, the first frame base includes a base, a base cover and a locking mechanism. The base cover can be opened and closed relative to the base. When the base cover is closed relative to the base, the two together enclose a supporting space for accommodating the dry mesh roller. The locking mechanism is used to lock the base cover to the base.

[0012] In some embodiments, at least one of the base and the base cover is provided with a plurality of rollers, and the rollers are used for rolling contact with the dry mesh roller located in the support space.

[0013] In some embodiments, the first frame base also includes a driving shaft, which is inserted into the base and rotatably connected to the base, one end of the driving shaft is connected to a driving meshing wheel, and the driving meshing wheel is used to mesh with a passive meshing wheel sleeved on the dry mesh roller, and the other end of the driving shaft is connected to a power source.

[0014] In some embodiments, the locking mechanism includes a first pin, a connecting screw, a second pin and a locking rod, one end of the connecting screw is hinged to the base through the first pin, and the other end is connected to the base cover through a nut; one end of the locking rod is hinged to the base through the second pin, and the other end is used to engage with the slot on the edge of the base cover.

[0015] In some embodiments, the auxiliary equipment further comprises a second frame base, wherein the second frame base is fixed on the support base, and the second frame base is used for supporting the dry mesh roll.

[0016] In a second aspect, an embodiment of the present application provides an auxiliary system for replacing a dryer fabric of a paper machine, wherein the auxiliary system includes at least two auxiliary devices described in the above embodiments.

[0017] The auxiliary equipment for replacing the dryer fabric of a paper machine provided in the embodiment of the present application has a simple structure and is flexible and convenient to operate. It can greatly reduce the labor intensity during the process of replacing the dryer fabric and improve the efficiency of replacing the dryer fabric in the drying cylinder section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of an auxiliary device for replacing a paper machine dryer fabric according to the present application;

[0020] Figure 2 yes Figure 1 A schematic structural diagram of the auxiliary device from another perspective in the embodiment;

[0021] Figure 3 yes Figure 1 A schematic structural diagram of the auxiliary device in the embodiment from another perspective;

[0022] Figure 4 It is a structural schematic diagram of an embodiment of the first rack base of the present application;

[0023] Figure 5 yes Figure 4 A schematic structural diagram of the first rack base from another perspective in the embodiment;

[0024] Figure 6 yes Figure 4 A schematic diagram of the split structure of the first rack base in the embodiment;

[0025] Figure 7 is a schematic structural diagram of the first frame base and the passive meshing wheel on the dryer web roller in an embodiment of the present application;

[0026] Figure 8 is a schematic diagram of the structure of the active meshing wheel in the embodiment of the present application;

[0027] Fig. 9 It is a structural schematic diagram of an embodiment of a second rack base of the present application;

[0028] Fig.10 yes Fig. 9 A schematic diagram of the split structure of the second rack base in the embodiment;

[0029] Fig.11 It is a schematic diagram of the auxiliary system for replacing the dryer fabric of the paper machine and the structure of the paper machine of the present application;

[0030] Fig.12 yes Fig.11 Schematic diagram of the local structure. DETAILED DESCRIPTION

[0031] The present invention will be 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 invention, but are not intended to limit the scope of the present invention. Similarly, the following examples are only partial embodiments of the present invention rather than all embodiments, and all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0032] 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 explicitly or implicitly include at least one of the features. In the description of the present invention, 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.

[0033] 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 invention. The appearance of the phrase in various places 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.

[0034] In view of the problems mentioned in the background technology, an auxiliary device for replacing a paper machine dryer fabric is provided in the embodiment of the present application. Figures 1 to 3 , Figure 1 It is a schematic diagram of the overall structure of an embodiment of an auxiliary device for replacing a paper machine dryer fabric according to the present application. Figure 2 yes Figure 1 A schematic diagram of the structure of the auxiliary device from another perspective in the embodiment, Figure 3 yes Figure 1 The auxiliary equipment in the embodiment is also a structural schematic diagram from another perspective; the auxiliary equipment for replacing the paper machine dryer network includes but is not limited to the following structures: a moving device 100, a supporting seat 200, a first frame base 300, a rotating device 400 and an anti-rotation device 500.

[0035] Specifically, the mobile device 100 includes a bracket 110 and a mobile wheel 120 disposed at the bottom of the bracket 110. The mobile wheel 120 may be a caster, specifically a fixed caster or a universal caster or both, which is not specifically limited here. In this embodiment, there may be two fixed casters and two universal casters.

[0036] The rotating device 400 is arranged between the bracket 110 and the support seat 200, and specifically, the bracket 110 may be welded with a steel plate, on which the rotating device 400 is installed. The rotating device 400 is used to realize the relative rotation of the support seat 200 and the bracket 110, that is, to realize that the components above the rotating device 400 (including the support seat 200, the first frame base 300 and the anti-rotation device 500, etc.) can rotate 360 ​​degrees. The rotating device 400 can be a bearing, and the two parts of the bearing that rotate relative to each other are respectively connected to the bracket 110 and the support seat 200, thereby realizing 360-degree rotation. The purpose of this design is that in actual operation, the dryer net roller is about 10 meters long. If both ends are fixed, it is difficult to get stuck in the frame base circle (support space) (the detailed structure will be described later). At the same time, the old dryer net also has left-right parallelism during use, mainly because there are many drying cylinder rollers and the wear of both ends of each roller is inconsistent, so most of the old dryer nets have a certain slope. The auxiliary equipment must also be kept parallel to the inclined dryer mesh during operation to facilitate subsequent winding.

[0037] Optionally, see Figure 1 and Figure 2 , the anti-rotation device 500 is connected to the support seat 200, and is used to fix the support seat 200 after the auxiliary device is moved into place. Optionally, the support seat 200 in this embodiment can be a hollow square tube structure, and the anti-rotation device 500 includes a connecting arm 510 and a screw rod 520. One end of the connecting arm 510 is connected to the support seat 200, and can be specifically inserted into the square tube structure of the support seat 200. In this way, the anti-rotation device 500 (the connecting arm 510) can be extended or shortened in the support seat 200 to adjust the installation position and reduce the volume of the overall structure. The other end of the connecting arm 510 is connected to the screw rod 520, and the support seat 200 is fixed after the auxiliary device is moved into place, so that it no longer rotates.

[0038] The first frame base 300 is fixed on the support base 200, and the two can be fixedly installed by screws. The first frame base 300 is used to support the dryer web roll. Figure 1 In this embodiment, a support frame 210 may be further provided in the middle of the support seat 200. A groove structure is provided on the top of the support frame 210, and a spare dry mesh roll may be placed in the groove structure.

[0039] Optionally, please also refer to Figure 1 , Figure 4 , Figure 5 as well as Figure 6 , Figure 4 is a structural schematic diagram of an embodiment of the first rack base of the present application, Figure 5 yes Figure 4 A schematic structural diagram of the first rack base from another perspective in the embodiment, Figure 6 yes Figure 4 Schematic diagram of the disassembled structure of the first rack base in the embodiment, wherein the first rack base 300 in this embodiment includes a base 310, a base cover 320 and a locking mechanism 330, the base 310 is at the bottom of the overall structure of the first rack base, and has a light hole at the bottom that can be connected to the support base 200 with screws.

[0040] The base cover 320 can be opened and closed relative to the base 310. When the base cover 320 is closed relative to the base 310 ( Figure 4 and Figure 5 The two together enclose a support space 3000 for accommodating the dryer mesh roller, wherein the overall shape of the support space 3000 may be circular, and the locking mechanism 330 is used to lock the base cover 320 with the base 310. When the base cover 320 is opened relative to the base 310, one end of the dryer mesh roller may be placed in the support space 3000.

[0041] Optionally, see Figure 6 The locking mechanism 330 in this embodiment includes a first pin shaft 331, a connecting screw 332, a second pin shaft 333 and a locking rod 334, wherein one end of the connecting screw 332 is hinged to the base 310 through the first pin shaft 331, and the other end of the connecting screw 332 is connected to the base cover 320 through a nut 335. One end of the locking rod 334 is hinged to the base 310 through the second pin shaft 333, and the other end is used to engage with the card slot 321 on the edge of the base cover 320, thereby realizing the locking and unlocking of the base cover 320 relative to the base 310.

[0042] Optionally, see Figures 4 to 6 In this embodiment, the first frame base 300 also includes a plurality of rollers 340, which may be disposed on at least one of the base 310 and the base cover 320. In this embodiment, the structure is that both the base 310 and the base cover 320 are provided with a plurality of rollers 340, and the rollers 340 are used for rolling contact and cooperation with the dry mesh roll located in the support space 3000.

[0043] Optionally, the first frame base 300 in this embodiment further includes a driving shaft 350, which is inserted into the base 310 and rotatably connected to the base 310 through a bearing 360. One end of the driving shaft 350 is connected to a driving meshing wheel 370, which is used to mesh with a passive meshing wheel 88 sleeved on the dryer web roll. Please refer to Figure 7 and Figure 8 , Figure 7 is a schematic structural diagram of the first frame base and the passive meshing wheel on the dryer web roll in the embodiment of the present application, Figure 8It is a schematic diagram of the structure of the active meshing wheel in the embodiment of the present application, wherein the active meshing wheel 370 may include a turntable 371 and a plurality of meshing columns 372 evenly arranged along the circumference of the turntable 371. Of course, in some other embodiments, the active meshing wheel 370 may also be a gear structure similar to the passive meshing wheel 88 or a chain-like structure. The detailed features of this part are within the understanding of those skilled in the art and will not be listed or described in detail here.

[0044] The figure does not show the dry mesh roller, which is inserted into the support space 3000 of the first frame base 300, and the passive meshing wheel 88 is sleeved on the end of the dry mesh roller. The other end of the driving shaft 350 is connected to the power source through the connecting flange 380, wherein the power source can be a pneumatic gun connected to an air pump, etc., which is not specifically limited here. The power source is used to drive the driving shaft 350 to rotate, thereby driving the active meshing wheel 370 to rotate, and the active meshing wheel 370 meshes with the passive meshing wheel 88 sleeved on the dry mesh roller, thereby driving the dry mesh roller to rotate. The auxiliary equipment structure in this embodiment can use an external air pump as a power source, thereby achieving the purpose of reducing the replacement of manpower.

[0045] Optionally, please also refer to Figure 1 , Fig. 9 as well as Fig.10 , Fig. 9 is a structural schematic diagram of an embodiment of a second rack base of the present application, Fig.10 yes Fig. 9 Schematic diagram of the disassembled structure of the second frame base in the embodiment, wherein the auxiliary equipment in this embodiment also includes a second frame base 600, which is fixed on the support base 200, and the second frame base 600 is used to support the dryer mesh roll. The upper part of the second frame base 600 is similar to the first frame base 300, and similarly includes a second base 610, a second base cover 620, a second locking mechanism 630, and a plurality of second rollers 640. The second base cover 620 can be opened and closed relative to the second base 610. When the second base cover 620 is closed relative to the second base 610, the two together enclose a second support space 6000 for accommodating the dryer mesh roll, wherein the overall shape of the second support space 6000 can be circular, and the second locking mechanism 630 is used to lock the second base cover 620 with the second base 610. When the second base upper cover 620 is opened relative to the second base 610 , one end of the dryer mesh roll may be placed in the second supporting space 6000 .

[0046] The second locking mechanism 630 includes a third pin 631, a second connecting screw 632, a fourth pin 633 and a second locking rod 634, wherein one end of the second connecting screw 632 is hinged to the second base 610 through the third pin 631, and the other end of the second connecting screw 632 is connected to the second base cover 620 through a second nut 635. One end of the second locking rod 634 is hinged to the second base 610 through the fourth pin 633, and the other end is used to engage with the second card slot 621 on the edge of the second base cover 620, thereby realizing the locking and unlocking of the second base cover 620 relative to the second base 610.

[0047] Optionally, see Fig. 9 and Fig.10 , multiple second rollers 640 can be arranged on at least one of the second base 610 and the second base cover 620. The structure in this embodiment is that the second base 610 and the second base cover 620 are both provided with multiple second rollers 640, and the second rollers 640 are used for rolling contact and cooperation with the dry mesh roll located in the supporting space 6000.

[0048] When the auxiliary device is used, the locking rod 334 (and / or the second locking rod 634) is loosened, the base cover 320 (and / or the second base cover 620) is removed, and the dryer mesh roller (which can be a dryer mesh roll roller or a dryer mesh roller (i.e., a dryer mesh roll roller with a new dryer mesh or an old dryer mesh wound on the dryer mesh roll roller)) is hoisted in and placed in the support space. Then the cover is pressed on. At this time, the roller can roll freely because it contacts the roller wheel (such as the bearing structure), so the resistance is small when rolling up and unrolling, which is convenient for operation.

[0049] in, Figure 1 The auxiliary device in the embodiment is an active structure (with an active shaft and an external power source). In some other embodiments, the auxiliary device may be designed with two active structures, that is, the auxiliary device has two first frame bases 300, wherein, as long as the auxiliary device has at least the first frame base 300, it is called an active auxiliary device. In addition, in some embodiments, the auxiliary device may also have two second frame bases 600 of passive structure, then the auxiliary device without any active structure frame base is called a passive auxiliary device. The above combination (the first frame base 300 of the active structure and the second frame base 600 of the passive structure) can be an embodiment of the present application.

[0050] Please also read Fig.11 and Fig.12 , Fig.11 This is a schematic diagram of the auxiliary system for replacing the dryer fabric of the paper machine and the structure of the paper machine of the present application. Fig.12 yes Fig.11The embodiment of the present application further provides an auxiliary system for replacing a paper machine dryer network, and the auxiliary system may include at least two auxiliary devices 10. For the structure of the auxiliary device 10, please refer to the description of the aforementioned embodiment. Optionally, in one embodiment, the auxiliary system may include two auxiliary devices, and the two auxiliary devices may be one passive type and one active type.

[0051] The paper machine includes a plurality of drying cylinder rollers 20, and the dryer net 30 is wound between the plurality of drying cylinder rollers 20. When the auxiliary system is working, two auxiliary devices (for example, one passive type and one active type) are manually pushed into the paper machine. Due to the movable wheels (universal wheels and directional wheels, etc.), the two auxiliary devices can be ensured to be located at the corresponding positions at both ends of the drying cylinder rollers 20. Afterwards, the upper frame base can be rotated by the rotating device to ensure that the parallelism of the two dryer net rollers is consistent with the old dryer net roller to be removed. After confirmation, the screw rods of the anti-rotation devices of the auxiliary devices at both ends are rotated and fixed to the ground, so that the two auxiliary devices at both ends are completely fixed, and then the paper machine dryer net replacement work is carried out.

[0052] See also Fig.12 In this embodiment, the operation of an auxiliary device 10 is described as an example, wherein the auxiliary device 10 may be provided with two dry mesh rollers, wherein the first dry mesh roller 41 may be connected to an active first frame base 300 (with power), and the first dry mesh roller 41 is used to wind up and store the old dry mesh; the second dry mesh roller 42 (a roll of new dry mesh) may be connected to a passive second frame base 600 (without power), and is used to release the mesh.

[0053] As domestic papermaking machines become more and more advanced, the dryer mesh is getting longer and heavier. And the dryer mesh needs to be replaced regularly. The auxiliary equipment for replacing the paper machine dryer mesh in the embodiment of the present application can use an external air pump as a power source, and the start and stop can be controlled on site according to actual conditions. The device can achieve 360-degree rotation, and the positions of the active end and the passive end can be interchanged. An external sprocket (or passive meshing gear) can be designed for the dryer mesh roller, and any dryer mesh roller can be turned into a power roller. Finally, it is a modular design. The base sizes of the active end (first frame base 300) and the passive end (second frame base 600) are consistent and replaceable, which is easy to maintain and saves costs.

[0054] The auxiliary system for replacing the dryer fabric of a paper machine provided in the embodiment of the present application has a simple structure and is flexible and convenient to operate. It can greatly reduce the labor intensity during the process of replacing the dryer fabric and improve the efficiency of replacing the dryer fabric in the drying cylinder section.

[0055] The above descriptions are only some embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any equivalent device or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An auxiliary device for replacing a paper machine dryer fabric, characterized in that: The auxiliary equipment includes: A moving device, comprising a bracket and a moving wheel arranged at the bottom of the bracket; A support seat, arranged on the bracket; The first frame base is fixed on the support base, and the first frame base is used to support the dryer mesh roller.

2. The auxiliary device according to claim 1, characterized in that The auxiliary equipment also includes a rotating device, which is arranged between the bracket and the support seat and is used to achieve relative rotation between the support seat and the bracket.

3. The auxiliary device according to claim 2, characterized in that The auxiliary device also includes an anti-rotation device, which is connected to the support seat and is used to fix the support seat after the auxiliary device is moved into place.

4. The auxiliary device according to claim 3, characterized in that The anti-rotation device comprises a connecting arm and a screw rod, one end of the connecting arm is connected to the support seat, and the other end is connected to the screw rod.

5. The auxiliary device according to claim 1, characterized in that The first frame base includes a base, a base cover and a locking mechanism. The base cover can be opened and closed relative to the base. When the base cover is closed relative to the base, the two together enclose a supporting space for accommodating the dry mesh roller. The locking mechanism is used to lock the base cover to the base.

6. The auxiliary device according to claim 5, characterized in that At least one of the base and the base upper cover is provided with a plurality of rollers, and the rollers are used for rolling contact and cooperation with the dry mesh reel located in the supporting space.

7. The auxiliary device according to claim 6, characterized in that The first frame base also includes a driving shaft, which is inserted into the base and rotatably connected to the base. One end of the driving shaft is connected to a driving meshing wheel, which is used to mesh with a passive meshing wheel sleeved on the dry mesh roller. The other end of the driving shaft is connected to a power source.

8. The auxiliary device according to claim 5, characterized in that The locking mechanism includes a first pin, a connecting screw, a second pin and a locking rod. One end of the connecting screw is hinged to the base through the first pin, and the other end is connected to the base cover through a nut; one end of the locking rod is hinged to the base through the second pin, and the other end is used to engage with the slot on the edge of the base cover.

9. The auxiliary device according to claim 1, characterized in that The auxiliary equipment also includes a second frame base, which is fixed on the support base and used for supporting the dryer mesh roll.

10. An auxiliary system for replacing a paper machine dryer fabric, characterized in that: The auxiliary system comprises at least two auxiliary devices according to any one of claims 1-9.

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