A wear-resistant structure for flat roller shafts

Abstract

This utility model discloses a wear-resistant structure for flat roller shafts in the field of flat roller shaft technology. It includes a flat roller shaft body, a support mechanism, and a limiting mechanism disposed on the outside of the flat roller shaft body. The support mechanism includes a support base, limiting supports symmetrically disposed at both ends of the support base, and a V-shaped clamping structure composed of a first support plate and a second support plate. The inner sides of the first and second support plates are respectively provided with a first polyurethane buffer pad and a second polyurethane buffer pad. The first support plate is slidably connected to the support base via a first slider. This wear-resistant structure for flat roller shafts consists of a support mechanism and a limiting mechanism. The support mechanism uses a three-stage dynamic buffer combining a V-shaped polyurethane buffer pad and a PTFE-coated slider to ensure the stability of the flat roller shaft during transportation. The limiting mechanism engages with an involute toothed disc via ultra-high molecular weight fiber rope for rigid locking. The silicone protective layer and the anti-slip base work together to suppress friction and displacement, achieving all-dimensional stable protection.

Description

Technical Field

[0001] This utility model relates to the field of flat roller technology, specifically a flat roller anti-wear structure. Background Technology

[0002] A flat roller is a core transmission component consisting of a cylindrical roller body and supporting journals at both ends. Its roller body surface is smooth and flat or has a pre-designed microstructure. It is made of rigid materials through heat treatment and precision machining, and has high load-bearing strength, wear resistance, and dimensional stability. It is mainly used in continuous rolling production lines, sheet metal leveling equipment, conveying systems, and printing machinery. It transmits torque and applies pressure evenly through rotational motion to achieve flat rolling, thickness control, and surface treatment of materials such as metal sheets, plastic films, or paper. Its structural design needs to comprehensively consider the roller body diameter / length ratio, surface roughness, thermal expansion coefficient matching, and resistance to bending deformation under dynamic loads. Some high-end applications integrate auxiliary functional modules such as hydraulic alignment, online temperature measurement, or internal cooling channels. As a basic functional unit in industrial continuous production, its performance directly affects the material processing accuracy and equipment operating efficiency.

[0003] In the transportation of industrial equipment, flat rollers require extremely high surface smoothness and are prone to collisions and friction damage during transportation due to bumps, sudden braking, or turning. Existing support frames use ordinary wooden structures and foam cushioning materials, which have defects such as insufficient load-bearing capacity and poor durability. Wooden supports are prone to deformation and cracking under long-term pressure and temperature and humidity changes, and the cushioning performance of foam materials is greatly reduced after repeated loading and unloading. This causes the rollers to frequently rub against the supports during transportation, forming visible scratches or strip-like abrasions. The cost of returning them to the factory for repair is high. At the same time, wooden frames cannot be recycled and require a continuous consumption of a large amount of wood, which is not only environmentally unfriendly but also increases transportation costs. Moreover, the structural strength drops sharply in extreme weather, posing a risk of support collapse. These problems highlight the shortcomings of existing solutions in terms of reliability, economy, and sustainability. There is an urgent need to develop new protective devices that are more pressure-bearing, reusable, and have adaptive cushioning capabilities.

[0004] Based on this, the present invention designs a wear-resistant structure for flat roller shafts to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a wear-resistant structure for flat roller shafts to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A wear-resistant structure for a flat roller shaft includes a flat roller shaft body, and further includes a support mechanism and a limiting mechanism disposed on the outer side of the flat roller shaft body. The support mechanism includes a support base, limiting supports symmetrically disposed at both ends of the support base, and a V-shaped clamping structure composed of a first support plate and a second support plate. The inner sides of the first support plate and the second support plate are respectively provided with a first polyurethane buffer pad and a second polyurethane buffer pad. The first support plate is slidably connected to the support base through a first slider, and the second support plate is slidably connected to the support base through a second slider. The outer side of the first support plate is provided with a first threaded rod with a first buffer spring, and the outer side of the second support plate is provided with a second threaded rod with a second buffer spring. The limiting mechanism includes a braided fiber rope, a winding reel, and a toothed disc body connected to the support base. A support plate is fixedly installed on the inner wall of the support base, and an anchor bolt is fixedly installed on the support plate. A braided fiber rope is fixedly installed on the anchor bolt. The braided fiber rope is made of ultra-high molecular weight polyethylene fiber and has a breaking strength ≥30 tons.

[0008] Optionally, the contact surface between the first polyurethane buffer pad and the second polyurethane buffer pad is an arc-shaped concave surface that matches the curvature of the flat roller shaft, with a surface roughness Ra≤0.05μm.

[0009] Optionally, the first threaded rod and the second threaded rod respectively pass through the support base and the preload of the buffer spring is adjusted through the first limit nut and the second limit nut.

[0010] Optionally, the limiting mechanism further includes a limiting lever that meshes with the gear disc body. The gear disc body is coaxially connected to the rope reel via a hexagonal nut, and a support frame is provided on the side of the hexagonal nut away from the rope reel.

[0011] Optionally, the outer layer of the braided fiber rope is covered with a silicone insulating layer, and the coefficient of friction of the contact surface with the flat roller shaft is ≤0.15.

[0012] Optionally, the support base is provided with a rubber base at the bottom, and the bottom surface is provided with anti-slip texture.

[0013] Optionally, the first support plate, the second support plate, and the support base are connected by detachable bolts.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, a support mechanism is provided. The support mechanism achieves three-level dynamic buffering and adaptive clamping through a V-shaped clamping structure composed of a polyurethane buffer pad, a buffer spring, a threaded rod and a slider. This allows the arc-shaped concave surface of the polyurethane buffer pad (Ra≤0.05μm) to accurately fit the surface of the flat roller shaft. Combined with the slider sliding adjustment of the PTFE coated guide rail and the pre-tightening force control of the limit nut, the vertical displacement of the shaft is reduced by 40%-60%. At the same time, the vibration-resistant design suppresses fretting wear.

[0016] 2. In this utility model, a limiting mechanism is provided. The limiting mechanism uses ultra-high molecular weight polyethylene fiber braided rope with a breaking force of ≥30 tons to be wound on the rope reel. It is locked by high-precision mechanical meshing between the toothed disc body and the limiting rod. When the shaft body is axially offset, the toothed disc is triggered to stop. Combined with the flexible isolation design of the silicone isolation layer (friction coefficient ≤0.15) to prevent displacement, axial rigid constraint and friction protection are formed. Finally, through the radial buffer of the support mechanism and the locking synergy of the limiting mechanism, the flat roller shaft body is protected against wear in all dimensions and its service life is improved. Attached Figure Description

[0017] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 This is a three-dimensional top view of the structure of this utility model;

[0020] Figure 4 This is a three-dimensional sectional view of the structure of this utility model. Figure 1 ;

[0021] Figure 5 This is a three-dimensional sectional view of the structure of this utility model. Figure 2 ;

[0022] Figure 6 This is a schematic diagram of the three-dimensional rear view structure of this utility model;

[0023] Figure 7 This is a three-dimensional left-side view structural schematic diagram of the present invention;

[0024] Figure 8 This is a three-dimensional, bottom-view structural diagram of the present invention;

[0025] Figure 9 This is a three-dimensional sectional view of the structure of this utility model. Figure 3 .

[0026] In the diagram: 1. Flat roller shaft; 2. Support mechanism; 201. Support base; 202. Limiting support; 203. First support plate; 204. First polyurethane buffer pad; 205. First slider; 206. First threaded rod; 207. First buffer spring; 208. First limiting nut; 209. Second support plate; 210. Second polyurethane buffer pad; 211. Second slider; 212. Second threaded rod; 213. Second buffer spring; 214. Second limiting nut; 215. Rubber base; 3. Limiting mechanism; 301. Support plate; 302. Anchor bolt; 303. Braided fiber rope; 304. Rope reel; 305. Gear disc body; 306. Hexagonal nut; 307. Limiting lever; 308. Support frame. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-9 In this embodiment of the utility model, a flat roller shaft anti-wear structure includes a flat roller shaft body 1, and further includes a support mechanism 2 and a limiting mechanism 3 disposed on the outside of the flat roller shaft body 1; the support mechanism 2 includes a support base 201, limiting supports 202 symmetrically disposed at both ends of the support base 201, and a V-shaped clamping structure composed of a first supporting plate 203 and a second supporting plate 209; the inner sides of the first supporting plate 203 and the second supporting plate 209 are respectively provided with a first polyurethane buffer pad 204 and a second polyurethane buffer pad 210; the first supporting plate 203 is slidably connected to the support base 201 through a first slider 205, and the second supporting plate 204 ... 9 is slidably connected to the support base 201 via the second slider 211; the outer side of the first support plate 203 is provided with a first threaded rod 206 with a first buffer spring 207, and the outer side of the second support plate 209 is provided with a second threaded rod 212 with a second buffer spring 213; the contact surface of the first polyurethane buffer pad 204 and the second polyurethane buffer pad 210 is an arc-shaped concave surface that matches the curvature of the flat roller shaft 1, with a surface roughness Ra≤0.05μm; the first threaded rod 206 and the second threaded rod 212 respectively pass through the support base 201 and the buffer spring preload is adjusted through the first limiting nut 208 and the second limiting nut 214;

[0031] The support mechanism 2 adopts a V-shaped clamping structure composed of a first polyurethane buffer pad 204, a second polyurethane buffer pad 210, a first buffer spring 207, a second buffer spring 213, a first threaded rod 206, a second threaded rod 212, a first slider 205, and a second slider 211. The buffer pad's arc-shaped concave surface (Ra≤0.05μm) adheres to the surface of the flat roller shaft 1. Combined with the preload adjustment of the threaded rod and the limiting nut, three-level dynamic buffering (elastic deformation + spring compression + slider sliding) is achieved. Simultaneously, the slider of the PTFE-coated guide rail slides along the support base 201 to adaptively clamp shafts of different diameters. Vibration-resistant design suppresses fretting wear and reduces vertical displacement by 40%-60%.

[0032] The limiting mechanism 3 includes a braided fiber rope 303, a rope reel 304, and a toothed disc body 305 connected to the support base 201. A support plate 301 is fixedly installed on the inner wall of the support base 201, and an anchor bolt 302 is fixedly installed on the support plate 301. The braided fiber rope 303 is fixedly installed on the anchor bolt 302. The braided fiber rope 303 is made of ultra-high molecular weight polyethylene fiber and has a breaking force ≥30 tons. The limiting mechanism 3 also includes a limiting lever 307 that meshes with the toothed disc body 305. The toothed disc body 305 is coaxially connected to the rope winding disc 304 via a hexagonal nut 306. A support frame 308 is also provided on the side of the hexagonal nut 306 away from the rope winding disc 304. The outer layer of the braided fiber rope 303 is covered with a silicone isolation layer, and the friction coefficient of the contact surface with the flat roller shaft 1 is ≤0.15. The bottom of the support base 201 is provided with a rubber base 215, and its bottom surface is provided with anti-slip texture. The first support plate 203, the second support plate 209, and the support base 201 are connected by detachable bolts.

[0033] The limiting mechanism 3 uses a braided rope made of ultra-high molecular weight polyethylene fiber with a breaking force of ≥30 tons wound on the rope reel 304. Axial locking is achieved through the mechanical engagement of the toothed disc body 305 and the limiting rod 307. When the shaft body deviates by more than 0.5mm, the hexagonal nut 306 triggers the rigid locking of the toothed disc body 305 and the limiting rod 307. At the same time, a silicone isolation layer (friction coefficient ≤0.15) wraps the braided rope to reduce friction with the shaft body. Combined with the anti-displacement design of the anti-slip textured rubber base 215, a synergistic effect of axial constraint and friction protection is formed.

[0034] The working principle of this utility model is as follows: This anti-wear structure for the flat roller shaft achieves dual protection of dynamic buffering and rigid constraint through the synergistic action of the supporting mechanism 2 and the limiting mechanism 3. When the flat roller shaft 1 is subjected to radial load, its surface is embedded in the V-shaped clamping structure composed of the first supporting plate 203 and the second supporting plate 209. The first polyurethane buffer pad 204 and the second polyurethane buffer pad 210 are tightly attached to the shaft body through the arc-shaped concave surface with a surface roughness Ra≤0.05μm. The clamping angle is adjusted by sliding the first slider 205 and the second slider 211 along the support base 201. The first threaded rod 206 and the second threaded rod 212 are respectively connected by the first buffer spring. 207 and the second buffer spring 213 absorb the impact energy, and the preload is adjusted in real time by the first limit nut 208 and the second limit nut 214, so that the vertical displacement of the flat roller shaft 1 is reduced by 40%-60%. At the same time, the braided fiber rope 303 is restricted to the winding reel 304 with ultra-high molecular weight polyethylene fiber (breaking force ≥30 tons). The silicone isolation layer (friction coefficient ≤0.15) on the braided fiber rope 303 reduces friction with the shaft. When the shaft is axially offset, the limit lever 307 instantly engages with the tooth groove to achieve mechanical locking. Combined with the anti-slip texture of the rubber base 215 at the bottom of the support base 201, the overall structure slippage is suppressed.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant structure for a flat roller shaft, comprising a flat roller shaft body (1), characterized in that: It also includes a support mechanism (2) and a limiting mechanism (3) disposed on the outside of the flat roller shaft (1); the support mechanism (2) includes a support base (201), limiting supports (202) symmetrically disposed at both ends of the support base (201), and a V-shaped clamping structure composed of a first support plate (203) and a second support plate (209); the inner sides of the first support plate (203) and the second support plate (209) are respectively provided with a first polyurethane buffer pad (204) and a second polyurethane buffer pad (210); the first support plate (203) is slidably connected to the support base (201) through a first slider (205), and the second support plate (209) is slidably connected to the support base (201) through a second slider (211); The first support plate (203) is provided with a first threaded rod (206) with a first buffer spring (207) on the outside, and the second support plate (209) is provided with a second threaded rod (212) with a second buffer spring (213) on the outside; the limiting mechanism (3) includes a braided fiber rope (303), a winding reel (304) and a toothed disc body (305) connected to the support base (201). A support plate (301) is fixedly installed on the inner wall of the support base (201). An anchor bolt (302) is fixedly installed on the support plate (301). A braided fiber rope (303) is fixedly installed on the anchor bolt (302). The braided fiber rope (303) is made of ultra-high molecular weight polyethylene fiber and has a breaking force ≥30 tons.

2. The anti-wear structure for a flat roller shaft according to claim 1, characterized in that: The contact surface between the first polyurethane buffer pad (204) and the second polyurethane buffer pad (210) is an arc-shaped concave surface that matches the curvature of the flat roller shaft (1), with a surface roughness Ra≤0.05μm.

3. The anti-wear structure for a flat roller shaft according to claim 2, characterized in that: The first threaded rod (206) and the second threaded rod (212) pass through the support base (201) respectively and the preload of the buffer spring is adjusted through the first limiting nut (208) and the second limiting nut (214).

4. The anti-wear structure for a flat roller shaft according to claim 3, characterized in that: The limiting mechanism (3) also includes a limiting lever (307) that meshes with the gear disc body (305). The gear disc body (305) is coaxially connected to the rope reel (304) via a hexagonal nut (306). A support frame (308) is also provided on the side of the hexagonal nut (306) away from the rope reel (304).

5. The anti-wear structure for a flat roller shaft according to claim 4, characterized in that: The outer layer of the braided fiber rope (303) is covered with a silicone insulating layer, and the friction coefficient of the contact surface with the flat roller shaft (1) is ≤0.

15.

6. The anti-wear structure for a flat roller shaft according to claim 5, characterized in that: The support base (201) has a rubber base (215) at its bottom, and its bottom surface has anti-slip texture.

7. The anti-wear structure for a flat roller shaft according to claim 1, characterized in that: The first support plate (203), the second support plate (209), and the support base (201) are connected by detachable bolts.

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