Scraper holder transfer equipment

Abstract

The utility model provides transfer equipment for a scraper holder. The transfer equipment comprises a support, a fixing device, a lifting device and a balance weight part. The support is of a cross rod structure, the balance weight and the fixing device are arranged at the two ends of the support respectively, the fixing device is used for being connected with a scraper holder to be transferred, and the lifting device is arranged in the middle of the support and used for being connected with external lifting equipment. The balance weight is used for achieving the balance state of the support on the two sides of the lifting device, and the transfer equipment can be lifted and moved under the action of the lifting device. According to the transfer equipment of the scraper frame, the lever principle is ingeniously utilized, the problem that the scraper frame is difficult to support and fall off due to the large self weight is solved by arranging the balance weight part, meanwhile, the waste problem caused by cutting off a dry net is solved, the problem that the scraper frame is long in replacement time is fundamentally solved, and the production efficiency of a papermaking production line is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of papermaking auxiliary equipment, and in particular to a transfer device for a scraper frame. Background Art

[0002] Drying cylinder is an important dehydration and drying equipment in the papermaking process. It dries the paper web by steam heating to reduce the water content of the paper web. When the drying cylinder is working, in order to timely remove the fine fibers, sizing materials and sticky substances brought in by waste paper pulp adhering to the surface of the drying cylinder, keep the surface of the drying cylinder clean to ensure the normal papermaking process, and also prevent the paper web from winding around the drying cylinder during paper breaking and paper feeding, a scraper device is generally attached to each drying cylinder. Therefore, the scraper device is one of the important main components in the papermaking workshop. In the industrial papermaking workshop, a large number of scrapers are used on a production line.

[0003] The scraper frame of the drying cylinder in front of the paper machine is in a high temperature and high humidity environment for a long time. The paint on the scraper frame made of carbon steel has serious peeling phenomenon. The paint flakes of the scraper frame have fallen on the paper surface, causing holes and paper breaks, resulting in huge losses. In addition, paint peeling has become a major hidden danger to the normal production of the paper machine. In addition, the scraper frame needs to be disassembled and inspected regularly, and how to quickly disassemble the scraper frame and deal with the surface paint is an urgent problem. The scraper is mainly composed of a scraper frame (scraper frame), a knife, and auxiliary equipment. The scraper frame is composed of a scraper blade clamp, a pressure device, and a swing device. The main difficulty in disassembling and assembling the scraper is the extraction and installation of the scraper frame. The scraper frame has a large weight, a long banner, a narrow operating space, and a dry net covering. These factors all affect the disassembly and assembly of the scraper.

[0004] In order to solve the problem of paint peeling and regular maintenance, due to limited downtime, manual on-machine grinding and on-machine maintenance have been adopted for a long time. The efficiency of single grinding and maintenance is low. Secondly, after the paint is removed, it is not conducive to the anti-corrosion protection of the scraper frame. Long-term use may cause new problems such as rust. 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.

[0005] The above problems urgently require the dryer to be taken off the machine regularly for repainting, regular maintenance or surface coating with stainless steel. Due to the heavy weight of the scraper frame, the current commonly used dryer removal solution is to cut off the dryer mesh and then use the gourd inside the air hood and the external crane to remove it little by little. Each time the scraper frame is replaced, it takes about 12 hours to replace it, which greatly affects the production efficiency of the paper machine. At the same time, each time the machine is stopped to replace a dryer mesh, the loss is huge. Now there is an urgent need for a scraper frame replacement device, which can avoid the loss of the dryer mesh and reduce the replacement time. Utility Model Content

[0006] An embodiment of the present application provides a transfer device for a scraper frame, which includes a bracket, a fixing device, a lifting device and a counterweight; the bracket is a cross bar structure, the counterweight and the fixing device are respectively arranged at both ends of the bracket, the fixing device is used to connect with the scraper frame to be transferred, the lifting device is arranged in the middle of the bracket and is used to connect with an external lifting device, the counterweight is used to achieve a balanced state of the bracket on both sides of the lifting device, and the transfer device can be lifted and moved under the action of the lifting device.

[0007] In some embodiments, the bracket includes a first bracket and a second bracket, the first bracket and the second bracket are fixedly connected via a connecting member, and the extension directions of the first bracket and the second bracket are parallel.

[0008] In some embodiments, the lifting device is connected to the middle position of the first bracket, one end of the first bracket is connected to the fixing device, and the other end is connected to the second bracket through the connecting piece, and the end of the second bracket away from the first bracket is connected to the counterweight.

[0009] In some embodiments, the first bracket includes a forearm bracket and a rear arm bracket of an integral structure, and the lifting device is disposed at a connection position between the forearm bracket and the rear arm bracket.

[0010] In some embodiments, the transfer device further comprises a stabilizing device connected to a middle position of the second bracket.

[0011] In some embodiments, the counterweight comprises any one of a steel plate and a concrete block or a combination of the two.

[0012] In some embodiments, the transfer device further comprises a temporary bracket, wherein the temporary bracket is used to temporarily support the bottom of the first bracket.

[0013] In some embodiments, the fixing device includes a flange disposed at the end of the bracket, and mounting holes are provided around the flange, which is fixedly connected to the scraper holder to be transferred by screws.

[0014] In some embodiments, the fixing device further comprises an auxiliary connection assembly, and the auxiliary connection assembly is respectively connected to the end of the bracket and the end of the scraper holder to be transferred.

[0015] In some embodiments, the auxiliary connecting assembly includes a fixed base, a connecting base and a connecting rod, wherein the fixed base is fixedly connected to the end of the bracket, the connecting base is fixedly connected to the end of the scraper holder to be transferred, one end of the connecting rod is provided with a thread, which is connected to the fixed base through a nut, and the other end is provided with a connecting hole, which is hinged to the connecting base through a pin shaft; wherein the angle between the axial direction of the connecting rod and the axial direction of the bracket is an acute angle.

[0016] The transfer device of the scraper frame provided in the embodiment of the present application cleverly utilizes the lever principle and solves the problem of the scraper frame being too heavy to support and disengage by setting a counterweight. At the same time, it solves the waste problem caused by cutting off the dry net and fundamentally reduces the problem of long scraper frame replacement time, thereby greatly improving the production efficiency of the paper production line. 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 It is a schematic diagram of the overall structure of an embodiment of a transfer device of a scraper holder of the present application;

[0019] Figure 2 yes Figure 1 A schematic diagram of the structure of the transfer device and the scraper frame in the embodiment;

[0020] Figure 3 yes Figure 2 An enlarged schematic diagram of the local structure of the transfer device at position A in the embodiment;

[0021] Figure 4 yes Figure 3 A schematic structural diagram of a connecting rod in an embodiment. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] 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.

[0025] In order to deal with the paint peeling of the scraper frame and the need for regular maintenance, the current commonly used solution for removing the drying cylinder from the machine is to use the hoist inside the air hood and the external crane to remove it little by little. The replacement takes a long time and the dryer screen is greatly damaged each time it is replaced. In view of this, an embodiment of the present application provides a transfer device for the scraper frame.

[0026] Please also read Figure 1 and Figure 2 , Figure 1 It is a schematic diagram of the overall structure of an embodiment of a transfer device of a scraper holder of the present application, Figure 2 yes Figure 1 A schematic structural diagram of the transfer device and the scraper frame in the embodiment; the transfer device 10 in this embodiment includes a bracket 100, a fixing device 200, a lifting device 300 and a counterweight 400.

[0027] Specifically, the bracket 100 is a crossbar structure, the counterweight 400 and the fixing device 200 are respectively arranged at both ends of the bracket 100, the fixing device 200 is used to connect with the scraper frame 20 to be transferred, the lifting device 300 is arranged in the middle of the bracket 100, and is used to connect with an external lifting device (such as a crane or a crane, etc., not shown in the figure), the counterweight 400 is used to achieve the balance state of the bracket 100 on both sides of the lifting device 300, and the transfer equipment 10 (together with the scraper frame 20 to be transferred) can be lifted and moved under the action of the lifting device 300.

[0028] Optionally, the bracket 100 in this embodiment includes a first bracket 110 and a second bracket 120, wherein the first bracket 110 and the second bracket 120 are fixedly connected by a connecting member 130, and the extension directions of the first bracket 110 and the second bracket 120 are parallel. By adjusting the connection position of the first bracket 110 and the second bracket 120 by the connecting member 130, the total length of the first bracket 110 and the second bracket 120 (that is, the length of the bracket) can be adjusted.

[0029] The lifting device 300 is connected to the middle of the first bracket 110. The lifting device 300 may specifically include a connecting portion and a hook, which are not specifically limited here. One end of the first bracket 110 is connected to the fixing device 200, and the other end is connected to the second bracket 120 through the connecting member 130. The end of the second bracket 120 away from the first bracket 110 is connected to the counterweight 400. The counterweight 400 may be a weight including any one of a steel plate and a concrete block or a combination of both. In addition, the counterweight 400 may also be other heavy objects, such as bricks.

[0030] Optionally, see Figure 1 In this embodiment, the first bracket 110 includes a forearm bracket 111 and a rear arm bracket 112 of an integrated structure, and the lifting device 300 is arranged at the connecting position of the forearm bracket 111 and the rear arm bracket 112, that is, the connecting position of the lifting device 300 separates the first bracket 110 into the forearm bracket 111 and the rear arm bracket 112.

[0031] Optionally, the transfer device 10 in this embodiment further includes a stabilizing device 500, which is connected to the middle position of the second bracket 120. The stabilizing device 500 is used to connect to an external lifting device (such as a crane or a traveling crane, etc., not shown in the figure), and the stabilizing device 500 and the lifting device 300 are equivalent to two force points during the lifting process of the bracket 100, thereby improving the lifting stability.

[0032] The transfer device 10 in this embodiment may further include a temporary support 600 , which is used to temporarily support the bottom of the first support 110 in a non-lifting state, so as to play a role in stabilizing the support support 100 .

[0033] The lifting device 300 is the fulcrum of the bracket 100, and the external lifting equipment (such as a crane or a crane, etc.) realizes the balancing action of the counterweight 400 and the scraper frame 20 through the fulcrum. In addition, the overall lifting and lowering action of the scraper frame 20 replacement device can be realized through the fulcrum; the lever arm is composed of a forearm bracket, a rear arm bracket and a second bracket respectively, and the second bracket is fixed to the rear arm bracket of the first bracket through a connecting piece. The total length of the second bracket and the rear arm bracket can be changed by changing the position of the connecting piece, which is suitable for controlling the lever arm by adjusting the total length of the two when the weight of the counterweight is fixed.

[0034] See also Figure 3 , Figure 3 yes Figure 2 The enlarged schematic diagram of the local structure of the transfer device at A in the embodiment, wherein the fixing device 200 in this embodiment includes a flange 210 provided at the end of the bracket (first bracket 110), and a circle of concentric mounting holes of equal diameter are provided around the flange 210, which is fixedly connected to the scraper frame 20 to be transferred by screws 220. Due to the different sizes of the scraper frames, the fixing device (flange 210) used can also be a replaceable structure, and a threaded hole is provided on the left side of the fixing device (flange 210), which is connected to the forearm bracket through the threaded hole.

[0035] Optionally, the fixing device 200 in this embodiment may further include an auxiliary connection assembly 230, which is respectively connected to the end of the bracket 100 and the end of the scraper frame 20 to be transferred. Specifically, the auxiliary connection assembly 230 includes a fixed base 231, a connecting base 232 and a connecting rod 233, and the fixed base 231 is fixedly connected to the end of the bracket 100 (first bracket 110), and can be fixed by welding. The connecting base 232 is fixedly connected to the end of the scraper frame 20 to be transferred, and can be fixed by welding or other fixing methods.

[0036] Please also read Figure 4 , Figure 4 yes Figure 3The structural schematic diagram of the connecting rod in the embodiment, one end of the connecting rod 233 is provided with a thread 2331, connected to the fixed base 231 through a nut 234, the fixed base 231 is provided with a through hole 2310, and the connecting rod 233 is inserted into the through hole 2310. The other end of the connecting rod 233 is provided with a connecting hole 2332, which is hinged to the connecting base 232 through a pin 235; optionally, the angle a between the axial direction of the connecting rod 233 and the axial direction of the bracket 100 is an acute angle. Through this design, the connection reliability can be improved, and the shear stress of the connecting rod 233 can be reduced, and the service life of the connecting rod 233 can be increased. When the flange 210 of the fixing device and the scraper frame 20 are not in the same plane, the position of the nut 234 is adjusted to make them in the same horizontal position, and it is also the main fixed force device, so that the scraper frame and the flange 210 of the fixing device are firmly bound as one.

[0037] The difficulty in replacing the scraper lies in how to lift the scraper frame in the narrow space of the air hood. The technical solution of the embodiment of the present application adopts the lever principle to balance the weight of the scraper frame. According to the lever principle formula, when the product of the force on both sides and the lever arm is the same, the scraper frame can be balanced without lifting the scraper frame, and the scraper frame can be moved subsequently.

[0038] Use a crane (external lifting device) to lift the equipment to a high position such as the scraper frame through a lifting device. Because the weight of different scraper frames is slightly different, the weight of the weight (counterweight) is slightly greater than the calculated weight. The weight of the weight is accurately controlled by the crane hoisting action at the stabilizing device; after the fixing device is stably connected to the scraper frame, the crane hook at the stabilizing device is in the highest position. At this time, the weight applies gravity to the lever system, and the position of the crane hook is gradually lowered to gradually force the weight. When the scraper frame is in a balanced position, remove the fixing bolts of the scraper frame and the frame at the installation position, etc. The above actions complete the balancing action of the scraper frame. When the weight of the scraper frame is large, the force arm can be increased by changing the position of the connecting piece, or the weight of the weight can be replaced to achieve the balancing action of the scraper frame. When it is in a balanced state, remove the fixing bolts on the other side of the scraper frame, and control the position of the lifting device and the stabilizing device hook at the same time by the crane to achieve the in and out action of the scraper frame. Similarly, the above actions can achieve the removal of the old scraper frame and the installation action of the new scraper frame.

[0039] The scraper frame transfer equipment in the embodiment of the present application solves the problems of large dry net loss and long replacement time when the scraper frame is replaced. The replacement efficiency is improved by 40-50% compared with the conventional solution, and the cost is reduced by 95% compared with before. The purpose of fast scraper frame replacement and reduced dry net loss is achieved. At the same time, the manual labor intensity is greatly reduced, and good working results have been achieved in actual production.

[0040] The transfer device of the scraper frame provided in the embodiment of the present application cleverly utilizes the lever principle and solves the problem of the scraper frame being too heavy to support and disengage by setting a counterweight. At the same time, it solves the waste problem caused by cutting off the dry net and fundamentally reduces the problem of long scraper frame replacement time, thereby greatly improving the production efficiency of the paper production line.

[0041] 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 scraper holder transfer device, characterized in that: The transfer equipment includes a bracket, a fixing device, a lifting device and a counterweight; the bracket is a crossbar structure, the counterweight and the fixing device are respectively arranged at both ends of the bracket, the fixing device is used to connect with the scraper frame to be transferred, the lifting device is arranged in the middle of the bracket and is used to connect with an external lifting device, the counterweight is used to achieve a balanced state of the bracket on both sides of the lifting device, and the transfer equipment can be lifted and moved under the action of the lifting device.

2. The transfer device according to claim 1, characterized in that The bracket includes a first bracket and a second bracket, the first bracket and the second bracket are fixedly connected via a connecting member, and the extension directions of the first bracket and the second bracket are parallel.

3. The transfer device according to claim 2, characterized in that The lifting device is connected to the middle position of the first bracket, one end of the first bracket is connected to the fixing device, and the other end is connected to the second bracket through the connecting piece, and one end of the second bracket away from the first bracket is connected to the counterweight.

4. The transfer device according to claim 3, characterized in that The first bracket includes a forearm bracket and a rear arm bracket of an integrated structure, and the lifting device is arranged at the connection position of the forearm bracket and the rear arm bracket.

5. The transfer device according to claim 3, characterized in that The transfer device further comprises a stabilizing device connected to a middle position of the second bracket.

6. The transfer device according to claim 1, characterized in that The counterweight comprises any one of a steel plate and a concrete block or a combination of the two.

7. The transfer device according to claim 2, characterized in that The transfer device further comprises a temporary support, and the temporary support is used for temporarily supporting the bottom of the first support.

8. The transfer device according to claim 1, characterized in that The fixing device comprises a flange plate arranged at the end of the bracket, and mounting holes are arranged around the flange plate, which is fixedly connected to the scraper frame to be transferred by screws.

9. The transfer device according to claim 8, characterized in that The fixing device also includes an auxiliary connection component, which is respectively connected to the end of the bracket and the end of the scraper frame to be transferred.

10. The transfer device according to claim 9, characterized in that The auxiliary connecting assembly includes a fixed base, a connecting base and a connecting rod. The fixed base is fixedly connected to the end of the bracket, and the connecting base is fixedly connected to the end of the scraper holder to be transferred. One end of the connecting rod is provided with a thread and is connected to the fixed base through a nut, and the other end is provided with a connecting hole and is hinged to the connecting base through a pin shaft; wherein the angle between the axial direction of the connecting rod and the axial direction of the bracket is an acute angle.

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