Buffering device for paper machine core rod lifting hook
By designing a buffer device to buffer the fall of the paper movement core rod lift hook, the problem of damaging the frame base plate and sensor in the prior art is solved, and the effect of improving the production efficiency of paper machines and reducing maintenance costs is achieved.
Patent Information
- Application Number
- CN202422213332.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-09-10
AI Technical Summary
In the prior art, the paper movement core rod lift hook is prone to damage the frame base plate and sensor when it falls, resulting in low production efficiency of the paper machine.
A buffer device including a buffer, a base and a head panel is designed. It is installed on the base through a buffer. The head panel is installed on the head of the buffer. The buffer is spring-type, the head panel is a circular flat panel with a diameter of 120 to 240 mm. The wear-resistant parts are arranged below the head panel. The base is a hollow cylinder. The buffer is installed by threaded connection. The head panel is installed by engaging connection. The height of the buffer and the base is 330 to 360 mm.
Effectively buffer the mandrel lift hook, avoid damaging the frame base plate and sensors, improve paper machine production efficiency, and reduce maintenance costs.
Smart Images
Figure CN223255759U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a buffer device for a core rod lifting hook of a paper machine, which is mainly used in the technical field of paper production. Background Art
[0002] Modern papermaking machines are relatively large, and an initial paper roll can weigh dozens of tons. The initial paper roll is either cut directly into small rolls for the customer, or it is coated or over-pressed and then cut into small rolls for the customer. In this process, the initial paper roll is cut into rolls of various sizes, and the weight is also relatively large, ranging from several tons to more than ten tons. When these rolls are changed (paper rolls), the paper roll core rod needs to be lifted by the core rod lifting hook. In the existing technology, after the roll change is completed, the core rod lifting hook falls and falls directly onto the frame bottom plate, and may even bounce several times, which can easily cause damage to the frame bottom plate. In addition, if the super calender is changing the roll, it is also easy to cause displacement or damage to the sensor at the core rod lifting hook, resulting in the failure of the automatic flying roll changing operation of the super calender. Whether the frame bottom plate is damaged or the sensor is displaced or damaged, it will lead to long-term downtime for maintenance and reduce the production efficiency of the paper machine. Utility Model Content
[0003] One object of the present invention is to provide a buffer device for a core rod lifting hook of a paper machine, which can overcome the defects of the prior art, avoid damage to the frame bottom plate and / or the sensors at the core rod lifting hook, and improve the production efficiency of the paper machine.
[0004] The above objectives of the present invention are achieved through a buffer device for a paper machine core rod lifting hook, which includes a buffer, a base, and a head panel, wherein the buffer is installed on the base, and the head panel is installed on the head of the buffer, the base is cylindrical, and the head panel is flat plate-shaped.
[0005] According to the above technical solution, the buffer device for the core rod lifting hook of the paper machine of the utility model can achieve the following beneficial technical effects: it can effectively buffer the fall of the core rod lifting hook, avoid damage to the frame bottom plate and / or the sensor at the core rod lifting hook, and improve the production efficiency of the paper machine.
[0006] Preferably, the buffer device for the paper machine core rod lifting hook further includes a gasket, and the gasket is installed between the buffer and the base.
[0007] According to the above technical solution, the buffer device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: through the appropriately arranged gasket, the installation between the buffer and the base can be made more stable, and the distance between the buffer and the base can be adjusted.
[0008] Preferably, the head panel is in the shape of a circular flat plate with a diameter of 120 to 240 mm.
[0009] According to the above technical solution, the buffering device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: through the head panel of appropriate shape and size, it can ensure that the core rod lifting hook does not separate from the buffer when falling, ensure that the falling of the core rod lifting hook is effectively buffered, and avoid damage to the buffer.
[0010] Preferably, the diameter of the head panel is 200 mm.
[0011] According to the above technical solution, the buffering device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: through the head panel of a better size, it can better ensure that the core rod lifting hook does not separate from the buffer when falling, ensure that the falling of the core rod lifting hook is effectively buffered, and avoid damage to the buffer.
[0012] Preferably, the buffer is a spring buffer.
[0013] According to the above technical solution, the buffer device for the core rod lifting hook of the paper machine of the utility model can achieve the following beneficial technical effects: through a buffer of an appropriate form, the falling of the core rod lifting hook can be better and effectively buffered, thereby avoiding damage to the bottom plate of the frame and / or the sensor at the core rod lifting hook, thereby improving the production efficiency of the paper machine.
[0014] Preferably, the buffer device for the paper machine core rod lifting hook further includes a wear-resistant component, and the wear-resistant component is arranged below the head panel.
[0015] According to the above technical solution, the buffer device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: through the appropriately arranged wear-resistant parts, it can prevent the head panel from being worn, and provide auxiliary buffering and support for the head panel and the core rod lifting hook, thereby extending the service life of the buffer and reducing the maintenance and replacement costs.
[0016] Preferably, the base is in the shape of a hollow cylinder.
[0017] According to the above technical solution, the buffer device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: through the base of suitable shape, the manufacturing cost of the base can be reduced, thereby reducing the overall manufacturing cost of the buffer device.
[0018] Preferably, the buffer is mounted on the base via a threaded connection.
[0019] According to the above technical solution, the buffer device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: through a suitable connection form, the buffer can be more firmly and conveniently installed on the base.
[0020] Preferably, the head panel is mounted on the head of the buffer by a snap-fit connection.
[0021] According to the above technical solution, the buffer device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: through a suitable connection form, the head panel can be more firmly and conveniently installed on the head of the buffer.
[0022] Preferably, the sum of the heights of the buffer and the base is 330-360 mm.
[0023] According to the above technical solution, the buffer device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: through the appropriate buffer and base height, the falling distance of the core rod lifting hook can be appropriately shortened without affecting the operation of the core rod lifting hook, thereby reducing the falling impact force of the core rod lifting hook. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of a buffer device for a paper machine core rod lifting hook according to an embodiment of the present invention.
[0025] List of reference numerals:
[0026] 1. Buffer
[0027] 2. Base
[0028] 3. Head panel
[0029] 4. Gasket
[0030] 5. Wear-resistant parts
[0031] 10. Mandrel lifting hook DETAILED DESCRIPTION
[0032] The specific embodiments of the present invention will be described below. It should be noted that in the specific description of these embodiments, in order to provide a concise description, this specification cannot provide a detailed description of all the features of the actual embodiments. It should be understood that in the actual implementation of any embodiment, just as in the process of any engineering project or design project, in order to achieve the specific goals of the developer and to meet system-related or business-related restrictions, various specific decisions are often made, and this will also change from one embodiment to another. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for ordinary technicians in the field related to the content disclosed by the present invention, some changes in design, manufacturing or production based on the technical content disclosed in this disclosure are just conventional technical means and should not be understood as the content of this disclosure being insufficient.
[0033] Unless otherwise defined, the technical or scientific terms used in the claims and description shall have the usual meaning understood by persons of ordinary skill in the technical field to which the utility model belongs. The words "first", "second" and similar terms used in the description and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprising" mean that the elements or objects appearing before "include" or "comprising" cover the elements or objects listed after "include" or "comprising" and their equivalent elements, and do not exclude other elements or objects. Words such as "connected" or "connected" and similar terms are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.
[0034] In the following description, in order to clearly demonstrate the structure and working mode of the present invention, many directional words will be used for description, but words such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and should not be understood as restrictive terms.
[0035] Figure 1 This is a schematic diagram of a buffer device for a paper machine core rod lifting hook according to an embodiment of the present invention. Figure 1 As shown, a buffer device for a paper machine core rod lifting hook according to an embodiment of the present invention includes a buffer 1, a base 2, and a head panel 3, wherein the buffer 1 is mounted on the base 2, and the head panel 3 is mounted on the head (i.e., the upper end) of the buffer 1, the base 2 is cylindrical, and the head panel 3 is flat plate-shaped.
[0036] According to the above technical solution, the buffer device for the core rod lifting hook of the paper machine of the utility model can achieve the following beneficial technical effects: it can effectively buffer the fall of the core rod lifting hook 10, avoid damage to the frame bottom plate and / or the sensor at the core rod lifting hook 10, and improve the production efficiency of the paper machine.
[0037] Specifically, when the mandrel lifting hook 10 falls after the roll change is completed, the buffer 1 and the head panel 3 can effectively cushion the fall of the mandrel lifting hook 10. In addition, since the buffer 1 is installed on the base 2, the entire buffer device is relatively stable and can better withstand the impact of the fall of the mandrel lifting hook 10, thereby avoiding damage to the frame bottom plate and / or the sensors at the mandrel lifting hook 10, thereby improving the production efficiency of the paper machine.
[0038] In some embodiments, as Figure 1 As shown, the buffer device for the paper machine core rod lifting hook further includes a gasket 4, which is installed between the buffer 1 and the base 2. According to the above technical solution, the buffer device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: through the appropriately arranged gasket 4, the installation between the buffer 1 and the base 2 can be made more stable, and the distance between the buffer 1 and the base 2 can also be adjusted.
[0039] Preferably, the diameter of the gasket 4 can be 42 millimeters and the thickness can be 5 millimeters. Preferably, the gasket 4 is made of iron.
[0040] In some embodiments, as Figure 1 As shown, the head panel 3 is a circular, flat plate with a diameter of 120 to 240 mm. According to the above technical solution, the buffer device for a paper machine core rod lifting hook of the present invention can achieve the following beneficial technical effects: the head panel 3 of suitable shape and size can ensure that the core rod lifting hook 10 does not separate from the buffer 1 when falling, ensuring that the falling of the core rod lifting hook 10 is effectively buffered and preventing damage to the buffer 1.
[0041] Specifically, the buffer head of the prior art generally adopts a conical head. However, the mandrel lifting hook 10 will move or shake left and right along the X-axis with the equipment. The maximum movement distance is 55 mm from the center distance. If the conical head of the buffer of the prior art is still used, the mandrel lifting hook 10 will separate from the buffer 1, and the buffer 1 will be pushed up, causing the buffer 1 to be hit laterally by the mandrel lifting hook 10 and damaged. Therefore, the present invention has modified the buffer head and added a head panel 3 with a diameter of 120 to 240 mm. This increases the area of the buffer head, so that the mandrel lifting hook 10 remains pressed on the buffer 1, ensuring that the mandrel lifting hook 10 does not separate from the buffer 1 when falling.
[0042] Preferably, the diameter of the head panel 3 is 200 mm. According to the above technical solution, the buffer device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: through the head panel 3 of a more optimal size, it can better ensure that the core rod lifting hook 10 does not separate from the buffer 1 when falling, ensuring that the falling of the core rod lifting hook 10 is effectively buffered and avoiding damage to the buffer 1.
[0043] Preferably, the thickness of the head panel 3 can be 20 mm. Preferably, the head panel 3 is made of stainless steel.
[0044] In some embodiments, as Figure 1 As shown, the buffer 1 is a spring-type buffer. According to the above technical solution, the buffer device for the core rod lifting hook of the paper machine of the utility model can achieve the following beneficial technical effects: through the buffer 1 of suitable form, the falling of the core rod lifting hook 10 can be effectively cushioned, thereby preventing damage to the frame bottom plate and / or the sensor at the core rod lifting hook 10, thereby improving the production efficiency of the paper machine.
[0045] Since the mandrel lifting hook 10 falls vertically, according to the mass and falling distance of the mandrel lifting hook 10, we can calculate the impact force of the mandrel lifting hook 10 on the buffer 1, and then according to the size of the impact force, we can choose the appropriate form and model of the buffer.
[0046] We know that the mass of the mandrel lifting hook 10 is m = 100 kg and the falling distance is h = 0.4 m;
[0047] Therefore, the speed of the mandrel lifting hook 10 when it is about to contact the head panel 3 is
[0048] Since the mandrel lifting hook 10 can be regarded as an ordinary hard object, the collision time between the mandrel lifting hook 10 and the head panel 3 can be taken as Δt = 0.1 seconds. According to the momentum theorem, we can obtain:
[0049] (F-mg)*Δt=0-(-m*V), where vertical upward is taken as the positive direction, and F is the elastic force of the head panel 3 on the core rod lifting hook 10;
[0050] So F = mg + (m*V / Δt) = 100*10 + (100*2.82 / 0.1) = 3820 Newtons;
[0051] According to Newton's third law, the impact force of the core rod lifting hook 10 on the head panel 3 is about 3820 Newtons (about 870 pounds).
[0052] Therefore, preferably, the buffer 1 is an American Anliding buffer, model OEMXT 1.5M×3. The maximum impact force that this type of buffer can withstand is 1300 pounds, which is slightly greater than the impact force of about 870 pounds obtained by the above calculation.
[0053] In some embodiments, as Figure 1 As shown, the buffer device for the paper machine core rod lifting hook further includes a wear-resistant component 5, which is arranged below the head panel 3. According to the above technical solution, the buffer device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: through the appropriately arranged wear-resistant component 5, it can prevent wear of the head panel 3, and provide auxiliary buffering and support for the head panel 3 and the core rod lifting hook 10, thereby extending the service life of the buffer 1 and reducing maintenance and replacement costs.
[0054] Preferably, if Figure 1 As shown, the wear-resistant component 5 can be a flat plate-shaped component with a through hole in the middle for the buffer 1 to pass through.
[0055] In some embodiments, the base 2 is in the shape of a hollow cylinder, i.e., a cylindrical body. According to the above technical solution, the buffer device for a paper machine core rod lifting hook of the present invention can achieve the following beneficial technical effects: the base 2 having a suitable shape can reduce the manufacturing cost of the base, thereby reducing the overall manufacturing cost of the buffer device.
[0056] Preferably, the height of the base 2 may be 285 mm.
[0057] Preferably, the cross section of the base 2 can be circular. Of course, those skilled in the art will understand based on the disclosure of the present invention that other shapes of base cross sections, such as rectangular or square, can also be used without departing from the scope of protection of the present invention.
[0058] Preferably, the cross section of the base 2 can be rectangular, 150 mm long and 140 mm wide; the base wall thickness is 20 mm.
[0059] Preferably, the base 2 is made of iron.
[0060] In some embodiments, as Figure 1 As shown, the buffer 1 is mounted on the base 2 by a threaded connection. According to the above technical solution, the buffer device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: through the appropriate connection form, the buffer 1 can be more firmly and conveniently mounted on the base 2.
[0061] Preferably, the lower end of the buffer 1 is provided with an external thread, and the upper end of the base 2 is provided with an internal threaded hole (for example, the inner diameter of the internal threaded hole is 42 mm), so that the lower end of the buffer 1 is threadedly screwed into the internal threaded hole at the upper end of the base 2, so that the buffer 1 is installed on the base 2 through a threaded connection.
[0062] In some embodiments, as Figure 1 As shown, the head panel 3 is mounted on the head of the buffer 1 by snap-fit connection. According to the above technical solution, the buffer device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: through the appropriate connection form, the head panel 3 can be more firmly and conveniently mounted on the head of the buffer 1.
[0063] Preferably, the head of the buffer 1 (also referred to as the buffer head) is truncated cone-shaped, and the head panel 3 has a truncated cone-shaped hole of matching shape and size at its center, so that the head panel 3 is mounted on the head of the buffer 1 by a snap-fit connection.
[0064] In some embodiments, as Figure 1 As shown, the sum of the heights of the buffer 1 and the base 2 is 330 to 360 mm. It should be noted that the sum of the heights of the buffer and the base here refers to the height of the assembly formed by the two after the buffer is installed on the base. According to the above technical solution, the buffer device for the paper machine core rod lifting hook of the utility model can achieve the following beneficial technical effects: by appropriately adjusting the sum of the heights of the buffer and the base, the falling distance of the core rod lifting hook 10 can be appropriately shortened (for example, the falling distance can be controlled to about 0.4 meters) without affecting the operation of the core rod lifting hook 10, thereby reducing the falling impact force of the core rod lifting hook 10.
[0065] The above describes the specific implementation methods of the present invention, but those skilled in the art will understand that the above specific implementation methods do not constitute a limitation of the present invention. Those skilled in the art can make various modifications based on the above disclosure without exceeding the scope of the present invention.
Claims
1. A buffer device for a paper machine core rod lifting hook, characterized in that: The buffer device for a paper machine core rod lifting hook comprises a buffer (1), a base (2), and a head panel (3), wherein the buffer (1) is mounted on the base (2), the head panel (3) is mounted on the head of the buffer (1), the base (2) is in the shape of a column, and the head panel (3) is in the shape of a flat plate.
2. The buffer device for a paper machine core rod lifting hook according to claim 1, characterized in that: The buffer device for the paper machine core rod lifting hook further comprises a gasket (4), and the gasket (4) is installed between the buffer (1) and the base (2).
3. The buffer device for a paper machine core rod lifting hook according to claim 1, characterized in that: The head panel (3) is in the shape of a circular flat plate with a diameter of 120 to 240 mm.
4. The buffer device for a paper machine core rod lifting hook according to claim 3, characterized in that: The diameter of the head panel (3) is 200 mm.
5. The buffer device for a paper machine core rod lifting hook according to claim 1, characterized in that: The buffer (1) is a spring-type buffer.
6. The buffer device for a paper machine core rod lifting hook according to claim 1, characterized in that: The buffer device for the paper machine core rod lifting hook further comprises a wear-resistant component (5), and the wear-resistant component (5) is arranged below the head panel (3).
7. The buffer device for a paper machine core rod lifting hook according to claim 1, characterized in that: The base (2) is in the shape of a hollow cylinder.
8. The buffer device for a paper machine core rod lifting hook according to claim 1, characterized in that: The buffer (1) is mounted on the base (2) via a threaded connection.
9. The buffer device for a paper machine core rod lifting hook according to claim 1, characterized in that: The head panel (3) is mounted on the head of the buffer (1) through a snap-fit connection.
10. The buffer device for a paper machine core rod lifting hook according to claim 1, characterized in that: The sum of the heights of the buffer (1) and the base (2) is 330 to 360 mm.