Structure for prolonging service life of coiling secondary arm and coiling device thereof

Abstract

According to the structure for prolonging the service life of the coiling secondary arm and the coiling device thereof, vibration, friction and corrosion are borne through the lining abrasion-resistant sleeve, abrasion between the pin shaft and the inner hole is reduced, a gap between the pin shaft and the inner hole is prevented from being enlarged, the abrasion-resistant performance of the inner hole of the pressing wheel is further improved, the abrasion-resistant performance between the inner hole of the pressing wheel and the pin shaft is further improved, and the service life of the coiling secondary arm is prolonged. The stability of the pinch roller can be kept for a longer time, and the swing amount is reduced; and meanwhile, even if the lining wear-resistant sleeve is worn, the work can be quickly recovered only by replacing the lining wear-resistant sleeve in the subsequent maintenance work, so that the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of coiling devices, in particular to a structure for improving the service life of a secondary coiling arm and a coiling device thereof. Background Art

[0002] Papermaking equipment usually includes main machines such as headbox, wire section, press section, drying section, calender, winder and transmission section, as well as auxiliary systems such as steam, water, vacuum, lubrication and heat recovery.

[0003] Winders are also called roller winders or drum winders. They typically consist of a winding roller, a winding cylinder, a frame, and a roll-changing device. Installed at the end of a papermaking machine, they wind the produced paper web into rolls for storage and further processing. Winders are widely used paper winding equipment, relying on friction between the winding roller and the winding cylinder to wind the paper web onto a roll.

[0004] Existing winders feature a secondary arm with a pressure wheel mounted on it. The swing of the secondary arm causes the pressure wheel to limit the position of the paper roll, requiring the pressure wheel to bear significant force during operation. The typical pressure wheel has an inner hole, rotatably secured to the secondary arm via a pin. Over extended, high-intensity use, wear easily develops between the pin and the inner hole of the pressure wheel, causing the pin and inner hole to become unstable and causing the pressure wheel to swing significantly, impacting the winding effect. Replacing the pressure wheel is labor-intensive and time-consuming, impacting production efficiency, and resulting in high costs. Utility Model Content

[0005] To this end, it is necessary to provide a structure and a winding device that can increase the service life of the secondary winding arm, so as to solve the problem that during long-term and high-intensity use, wear is easily generated between the pin shaft and the inner hole of the pressure wheel, resulting in the pin shaft and the inner hole being unable to remain stable, and the pressure wheel swinging greatly, affecting the winding effect. At this time, replacing the pressure wheel is time-consuming and labor-intensive, affecting production efficiency, and the cost is high.

[0006] To achieve the above-mentioned purpose, the utility model provides a structure for improving the service life of the secondary winding arm, including a secondary arm, a pin shaft and a pressure wheel, the pressure wheel is provided with an inner hole at the axis center, and an inner lining wear-resistant sleeve is nested in the inner hole; after the pin shaft passes through the inner lining wear-resistant sleeve, the two ends are respectively connected to the secondary arm so that the pressure wheel can be rotatably fixed on the secondary arm.

[0007] Furthermore, the inner lining wear-resistant sleeve is made of metal.

[0008] Furthermore, the inner lining wear-resistant sleeve is made of copper-based alloy or stainless steel.

[0009] Furthermore, both ends of the pin shaft are provided with a refueling hole, and a refueling channel extends inwardly from the refueling hole, and the refueling channel is connected to the contact position between the pin shaft and the liner wear-resistant sleeve.

[0010] Furthermore, the inner wall of the lining wear-resistant sleeve is provided with a first groove, the first groove is arranged along the circumferential direction, and the refueling channel is connected to the first groove.

[0011] Furthermore, a second groove is provided on the inner wall of the lining wear-resistant sleeve, the second groove is arranged along the circumferential direction, and at least one through opening is provided between the first groove and the second groove.

[0012] Furthermore, the pin is fixed to the secondary arm by locking with a nut.

[0013] The utility model provides a winding device, comprising a structure for improving the service life of a secondary winding arm according to any one of the above technical solutions.

[0014] Different from the existing technology, the above technical solution sets an inner lining wear-resistant sleeve in the inner hole of the pressure wheel. The inner lining wear-resistant sleeve withstands vibration, friction and corrosion, reduces the wear between the pin shaft and the inner hole, avoids the increase of the gap between the two, further improves the wear resistance of the inner hole of the pressure wheel, can maintain the stability of the pressure wheel for a longer time, and reduce the swing amount; at the same time, even if the inner lining wear-resistant sleeve is worn, in subsequent maintenance work, it is only necessary to replace the inner lining wear-resistant sleeve to quickly resume work, thereby improving production efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional view of the combination of the pressure wheel, pin shaft and liner wear-resistant sleeve described in the specific embodiment;

[0016] Figure 2 A cross-sectional view of another embodiment of the present invention showing an assembly of a pressure wheel, a pin shaft, and an inner wear-resistant sleeve, and having a refueling hole and a refueling channel;

[0017] Figure 3 A cross-sectional view of another embodiment of the present invention showing the pressure wheel, the pin shaft and the inner wear-resistant sleeve being assembled and provided with a first groove;

[0018] Figure 4 A cross-sectional view of another embodiment of the present invention showing the combination of the pressure wheel, the pin shaft and the inner lining wear-resistant sleeve, and having the second groove and the through opening;

[0019] Figure 5 It is a cross-sectional view of the liner wear-resistant sleeve according to another specific embodiment.

[0020] Description of reference numerals:

[0021] 10. Pressing wheel; 101. Inner hole;

[0022] 20, pin; 201, oil filling hole; 202, oil filling channel;

[0023] 30. Lining wear-resistant sleeve; 301. First groove; 302. Second groove; 303. Through port. DETAILED DESCRIPTION

[0024] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings.

[0025] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0026] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0027] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three possible relationships exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0028] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0029] Without further limitations, in this application, the words "include", "comprise", "have" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0030] Consistent with the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. Furthermore, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this manner, such as "multiple groups," "multiple times," etc., unless otherwise specifically defined.

[0031] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0032] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0033] See also Figures 1 to 5 This embodiment provides a structure for improving the service life of a secondary winding arm, including a secondary arm, a pin shaft 20 and a pressure wheel 10. The pressure wheel 10 is provided with an inner hole 101 at the axis center, and an inner lining wear-resistant sleeve 30 is nested in the inner hole 101; after the pin shaft 20 passes through the inner lining wear-resistant sleeve 30, both ends are respectively connected to the secondary arm so that the pressure wheel 10 can be rotatably fixed on the secondary arm.

[0034] The secondary arm is one of the components of the winder or winding device in the papermaking equipment. The winding device usually includes a support frame, a paper winding roller group, a paper winding cylinder, a primary arm and a secondary arm. The specific structure of the secondary arm can be referred to the utility model patent with patent publication number CN217516340U, which will not be repeated here.

[0035] The upper part of the secondary arm clamps or limits the paper roll through the pressure wheel 10, and the lower end is rotatably connected to the support frame. The middle part is connected with a telescopic device such as a pneumatic telescopic rod and a hydraulic telescopic rod. The telescopic device controls the secondary arm to swing within a certain range with the lower end as the fulcrum. When it swings to a suitable angle, the paper roll can be supported and limited by the pressure wheel 10. In order to ensure that the paper is flat after winding, it is necessary to maintain sufficient pressure on the paper roll stably through the pressure wheel 10. By arranging an inner lining wear-resistant sleeve 30 in the inner hole 101 of the pressure wheel 10, the inner lining wear-resistant sleeve 30 withstands vibration, friction and corrosion, reduces the wear between the pin shaft 20 and the inner hole 101, avoids the increase of the gap between the two, further improves the wear resistance of the inner hole 101 of the pressure wheel 10, can maintain the stability of the pressure wheel 10 for a longer time, and reduce the swing amount; at the same time, even if the inner lining wear-resistant sleeve 30 is worn, in the subsequent maintenance work, only the inner lining wear-resistant sleeve 30 needs to be replaced, and work can be quickly restored, thereby improving production efficiency and reducing production costs.

[0036] Furthermore, the inner lining wear-resistant sleeve 30 is made of metal. The inner lining wear-resistant sleeve 30 is made of copper-based alloy or stainless steel. Metal materials such as copper alloys have high hardness and good wear resistance, which can effectively reduce friction and extend the service life of mechanical equipment. Copper alloys such as tin bronze and aluminum bronze are often used to manufacture bushings because they have good corrosion resistance in the atmosphere and fresh water. The inner lining wear-resistant sleeve 30 is easy to replace after damage, with low cost and good economy; for example, the inner lining wear-resistant sleeve 30 is usually made of a "softer" material than the pin 20, such as copper, which can avoid iron grinding, extend the service life of the machine, and improve economy and easy replacement; metal materials have good casting and cutting processing properties, and are easy to manufacture and install. For example, copper alloys have good casting and cutting processing properties, and are suitable for manufacturing inner lining wear-resistant sleeves 30 of various shapes. In summary, the inner lining wear-resistant sleeve 30 is made of metal material mainly because of its wear resistance, hardness, economy and ease of processing. These characteristics make the inner lining wear-resistant sleeve 30 perform well in protecting the inner hole 101, reducing friction and extending service life.

[0037] Furthermore, the pin 20 is provided with a refueling hole 201 at each end. The refueling hole 201 can be located on both end surfaces of the pin 20, for example, at the axis of the end surface. A refueling channel 202 extends inward from the refueling hole 201, connecting to the contact point between the pin 20 and the inner wear-resistant sleeve 30. Specifically, the refueling hole 201 is a circular hole. The refueling channel 202 extends inward along the axis of the pin 20 to a certain position, and then extends radially to connect to the outside. The turning point of the refueling channel 202 is determined so that it can connect to the contact surface between the pin 20 and the inner wear-resistant sleeve 30. Lubricating oil is injected through the refueling hole 201, and the lubricating oil passes through the refueling channel 202 to reach between the pin shaft 20 and the inner lining wear-resistant sleeve 30. The inner lining wear-resistant sleeve 30 and the pin shaft 20 are rotated relative to each other by manual or driven operation to evenly apply the lubricating oil. The lubricating oil forms an oil film between the pin shaft 20 and the inner lining wear-resistant sleeve 30, reducing direct contact between the metals, thereby reducing friction and wear, and extending the service life of the inner lining wear-resistant sleeve 30; the lubricating oil has good fluidity, can absorb and take away the heat generated by friction, prevent the pin shaft 20 and the inner lining wear-resistant sleeve 30 from overheating, and protect mechanical parts from high temperature; the lubricating oil forms a protective film on the metal surface to prevent erosion by moisture and acidic substances, and protect the pin shaft 20 and the inner lining wear-resistant sleeve 30 from corrosion and rust; the lubricating oil can absorb mechanical vibration and reduce wear caused by vibration.

[0038] Furthermore, the inner wall of the wear-resistant liner sleeve 30 is provided with a first groove 301, which is arranged circumferentially. The oiling channel 202 communicates with the first groove 301. Grooving the inner wall of the pinhole sleeve increases lubricant storage space. When the reeling device is operating, lubricant flows through the first groove 301 into the wear-resistant liner sleeve 30, effectively lubricating the wear-resistant liner sleeve 30 and the pin shaft 20, reducing friction and wear.

[0039] Furthermore, the inner wall of the liner wear-resistant sleeve 30 is provided with a second groove 302, which is arranged along the circumferential direction. At least one through-hole 303 is provided between the first groove 301 and the second groove 302. Lubricating oil in the first groove 301 can flow into the second groove 302 through the through-hole 303, further increasing the storage space for the lubricating oil. When the winding device is operating, the lubricating oil flows through the second groove 302 to the outside of the liner wear-resistant sleeve 30, thereby effectively lubricating the liner wear-resistant sleeve 30 and the inner hole 101 of the pressure wheel 10, thereby reducing friction and wear.

[0040] The existing pin shaft 20 is locked with bolts, which is easy to loosen during long-term use, causing the pin shaft 20 to detach from the secondary arm and the pressure wheel 10 to fall off. Therefore, in order to improve the connection stability between the pin shaft 20 and the secondary arm, the pin shaft 20 is further fixed to the secondary arm by a nut.

[0041] The present invention also provides a winding device, comprising a structure for improving the service life of a secondary winding arm according to any one of the aforementioned embodiments.

[0042] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection of the present utility model. Therefore, based on the innovative concept of the present utility model, changes and modifications to the embodiments described herein, or equivalent structural or process transformations made using the contents of the present utility model specification and drawings, and direct or indirect application of the above technical solutions to other related technical fields are all included in the scope of protection of the present utility model patent.

Claims

1. A structure for increasing the service life of a secondary coiling arm, characterized by: It includes a secondary arm, a pin shaft and a pressure wheel. The pressure wheel is provided with an inner hole at the axis center, and an inner lining wear-resistant sleeve is nested in the inner hole. After the pin shaft passes through the inner lining wear-resistant sleeve, both ends are respectively connected to the secondary arm so that the pressure wheel can be rotatably fixed on the secondary arm.

2. The structure for improving the service life of the secondary winding arm according to claim 1, characterized in that: The inner lining wear-resistant sleeve is made of metal.

3. The structure for increasing the service life of the secondary winding arm according to claim 2, characterized in that: The inner lining wear-resistant sleeve is made of copper-based alloy or stainless steel.

4. The structure for increasing the service life of the secondary winding arm according to claim 1, characterized in that: Both ends of the pin shaft are respectively provided with a refueling hole, and a refueling channel extends inwardly from the refueling hole, and the refueling channel is connected to the contact position between the pin shaft and the liner wear-resistant sleeve.

5. The structure for increasing the service life of the secondary winding arm according to claim 4, characterized in that: The inner wall of the lining wear-resistant sleeve is provided with a first groove, the first groove is arranged along the circumferential direction, and the refueling channel is communicated with the first groove.

6. The structure for increasing the service life of the secondary winding arm according to claim 5, characterized in that: The inner wall of the lining wear-resistant sleeve is provided with a second groove, the second groove is arranged along the circumferential direction, and at least one through opening is provided between the first groove and the second groove.

7. The structure for increasing the service life of the secondary winding arm according to claim 1, characterized in that: The pin is fixed on the secondary arm by locking with a nut.

8. A winding device, characterized in that: The invention comprises a structure for improving the service life of a secondary winding arm according to any one of claims 1 to 7.

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