Roller frame anti-abrasion structure for coal mill

Abstract

The utility model provides a kind of roller stand anti-abrasion structure for coal mill belongs to anti-abrasion structure technical field, including base and its top fixedly connected with pneumatic telescopic link, the top telescopic end of pneumatic telescopic link is fixedly connected with limiting component, for rotating limiting to rotating roller shaft, limiting component top is connected with pressing component, for pressing and fixing, pneumatic telescopic link side bottom is equipped with butt joint, butt joint is equipped with control valve, control valve is used to control the air pressure inside pneumatic telescopic link, for the problem of vibration when traditional rotating roller eccentric rotation, the utility model can play buffering effect to eccentric rotation by the way of elastic sliding.

Description

Technical Field

[0001] This utility model relates to the field of anti-wear structure technology, specifically to an anti-wear structure for a coal mill roller frame. Background Technology

[0002] The pulverizer roller frame is one of the key components of a pulverizer. It is mainly used to support equipment such as the grinding disc and drum, and at the same time bear the grinding force of pulverized coal. The structural design and material selection of the roller frame are very important for ensuring the normal operation of the pulverizer and improving the grinding efficiency. The roller frame is generally composed of two or more rollers and corresponding support frame. There are two common types: radial roller frame and radial-axial composite roller frame.

[0003] Chinese patent CN222490301U discloses an anti-wear structure for a coal mill roller frame, which is used to reduce roller frame wear.

[0004] However, the above-mentioned publicly disclosed solutions have the following shortcomings: In actual use, the above solutions reduce wear by wearing and vibration reduction, but in actual use, the platform vibration reduction structure of the above devices causes the rotating rollers to tilt, which leads to a decrease in coal grinding effect.

[0005] This utility model proposes an anti-wear structure for a coal mill roller frame to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this invention is to significantly improve the wear resistance, ease of operation, and equipment reliability of the coal mill roller frame through multiple technical means such as pneumatic control, elastic buffering, arc surface limiting, and adjustable pressing, thereby overcoming the problems mentioned in the background technology.

[0007] Based on the above technical concept, the technical solution adopted by this utility model is as follows:

[0008] A wear-resistant structure for a coal mill roller frame includes a base and a pneumatic telescopic rod fixedly connected to its top. A limiting component is fixedly connected to the telescopic end of the pneumatic telescopic rod for limiting the rotation of the rotating roller shaft. A pressing component is connected to the top of the limiting component for pressing and fixing. By setting a linkage structure between the pneumatic telescopic rod, the limiting component, and the pressing component, the rotating roller shaft can be quickly positioned and stably fixed, effectively preventing wear of the roller shaft caused by vibration or displacement during operation and improving the reliability of equipment operation.

[0009] Further defining the above technical solution, a docking joint is provided at the bottom of the side of the pneumatic telescopic rod. The docking joint is equipped with a control valve, which is used to control the internal air pressure of the pneumatic telescopic rod. By setting a docking joint with a control valve on the side of the pneumatic telescopic rod, precise control of the internal air pressure of the pneumatic telescopic rod is achieved. This allows for flexible adjustment of the limit height and pressure according to actual working conditions, enhancing the adaptability and adjustability of the structure.

[0010] Further defining the above technical solution, the limiting component includes a lifting bracket fixedly connected to the top telescopic end of the pneumatic telescopic rod. The lifting bracket has two symmetrically distributed sliding slots, and a sliding column is slidably connected to the inner wall of the sliding slot. By setting the lifting bracket with sliding slots and the sliding column, the smooth lifting and adaptive adjustment of the limiting component is realized, reducing local wear caused by rigid contact, and improving the containment and protection effect on the roller shaft.

[0011] Further defining the above technical solution, a sliding component is fixedly connected to the bottom of the sliding column, and the sliding component is slidably connected to the bottom of the lifting bracket. A spring is fixedly connected to the side of the sliding component, and a spring bracket is fixedly connected to the other end of the spring. The spring bracket is fixedly set at the center of the bottom of the lifting bracket. Through the cooperative design of the sliding component and the spring, the elastic buffering function of the limiting component is realized, effectively absorbing the impact force during operation, reducing vibration transmission, further reducing wear and extending the service life of the component.

[0012] Further defining the above technical solution, the spring and the sliding component are symmetrically arranged on both sides of the spring bracket, and a bottom arc-shaped limiting component is fixedly connected to the top of the sliding column. Through the symmetrical arrangement of the spring and the sliding component, combined with the bottom arc-shaped limiting component, uniform pressure and stable positioning of the roller shaft are achieved, avoiding stress concentration at a single point and significantly improving the anti-wear effect.

[0013] Further defining the above technical solution, the bottom arc-shaped limiting component has threaded connections at both ends of its top end, and the top arc-shaped limiting component is slidably connected to the outer arc surface of the threaded component. The top of the threaded component presses against the top of the top arc-shaped limiting component. The top arc-shaped limiting component and the bottom arc-shaped limiting component have the same curvature. By connecting the bottom and top arc-shaped limiting components through the threaded components, the roller shaft can be quickly clamped and released, which is convenient for maintenance and replacement. At the same time, the arc surface design fits the shape of the roller shaft, enhancing its anti-wear performance.

[0014] Further defining the above technical solution, the pressing component includes a threaded connecting rod rotatably connected to the top of the lifting bracket. A pressing element is slidably connected to the outer arc surface of the top of the threaded connecting rod. The threaded connecting rod contacts and presses against the top of the pressing element. A through pressing groove is provided at the center of the pressing element. Through the cooperation between the threaded connecting rod and the pressing element, the pressing force can be adjusted and controlled. Combined with the design of the damping rod and damping ring, stable pressing feedback is provided to prevent overpressure or loosening and ensure long-term operational reliability.

[0015] Further defining the above technical solution, a damping rod is slidably connected to the inner wall of the pressing groove, and a damping ring is provided on the outer arc surface of the damping rod. The damping ring is slidably damped connected to the top of the pressing component, and an arc-shaped pressing component is fixedly connected to the bottom of the damping rod. The arc-shaped pressing component contacts and presses against the top of the top arc-shaped limiting component. Through the contact and pressing between the arc-shaped pressing component and the top arc-shaped limiting component, the roller shaft is pressed evenly in all directions, further dispersing stress, reducing wear, and improving the overall structural coordination and functionality.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Through the synergistic effect of multiple technical solutions, effective limiting, pressing and fixing, and wear protection of the rotating roller shaft are achieved, which significantly improves the stability and service life of the equipment.

[0018] 2. Through multiple technical means such as pneumatic control, elastic buffer, arc surface limit, and adjustable pressing, the wear resistance, ease of operation, and equipment reliability of the coal mill roller frame are significantly improved. It is suitable for various working conditions and has high practical value and promotion prospects. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the pneumatic telescopic rod in the anti-wear structure of the roller frame for a coal mill according to this utility model;

[0021] Figure 2 This is a schematic diagram of the arc-shaped pressing component in the anti-wear structure of the roller frame for a coal mill according to this utility model.

[0022] The components include: 1. Base; 2. Pneumatic telescopic rod; 3. Limiting component; 301. Lifting bracket; 302. Sliding groove; 303. Sliding column; 304. Sliding part; 305. Spring; 306. Spring bracket; 307. Bottom arc-shaped limiting component; 308. Threaded part; 309. Top arc-shaped limiting component; 4. Pressing component; 401. Threaded connecting rod; 402. Pressing part; 403. Pressing groove; 404. Damping rod; 405. Damping ring; 406. Arc-shaped pressing part. Detailed Implementation

[0023] The following is in conjunction with the appendix Figures 1-2 The present invention will be described in further detail below.

[0024] Example 1: This example provides a wear-resistant structure for a coal mill roller frame, such as... Figures 1-2 As shown, the device includes a base 1 and a pneumatic telescopic rod 2 fixedly connected to its top. A limiting component 3 is fixedly connected to the telescopic end of the pneumatic telescopic rod 2 for limiting the rotation of the rotating roller shaft. A pressing component 4 is connected to the top of the limiting component 3 for pressing and fixing.

[0025] The bottom side of the pneumatic telescopic rod 2 is equipped with a docking joint, which is equipped with a control valve. The control valve is used to control the internal air pressure of the pneumatic telescopic rod 2.

[0026] The limiting component 3 includes a lifting bracket 301 that is fixedly connected to the top telescopic end of the pneumatic telescopic rod 2. The lifting bracket 301 is provided with two symmetrically distributed sliding slots 302, and a sliding column 303 is slidably connected to the inner wall of the sliding slots 302.

[0027] A sliding component 304 is fixedly connected to the bottom of the sliding column 303. The sliding component 304 is slidably connected to the bottom of the lifting bracket 301. A spring 305 is fixedly connected to the side of the sliding component 304. A spring bracket 306 is fixedly connected to the other end of the spring 305. The spring bracket 306 is fixedly set at the center of the bottom of the lifting bracket 301.

[0028] Spring 305 and slider 304 are symmetrically arranged on both sides of spring bracket 306, and bottom arc-shaped limiting piece 307 is fixedly connected to the top of slider 303.

[0029] The specific working principle is as follows: This utility model achieves precise positioning and wear protection of the rotating roller shaft of the coal mill through the synergistic effect of pneumatic control, mechanical linkage and elastic buffer.

[0030] Example 2: This example provides a wear-resistant structure for a coal mill roller frame, such as... Figures 1-2As shown, threaded parts 308 are threaded through both ends of the top of the bottom arc-shaped limiting part 307. A top arc-shaped limiting part 309 is slidably connected to the outer arc surface of the threaded part 308. The top of the threaded part 308 presses against the top of the top arc-shaped limiting part 309. The top arc-shaped limiting part 309 has the same curvature as the bottom arc-shaped limiting part 307. The pressing component 4 includes a threaded connecting rod 401 rotatably connected to the top of the lifting bracket 301. A pressing component 401 is slidably connected to the outer arc surface of the top of the threaded connecting rod 401. Part 402, threaded connecting rod 401 contacts and presses the top of pressing part 402, pressing part 402 has a through pressing groove 403 at the center, a damping rod 404 is slidably connected to the inner wall of pressing groove 403, a damping ring 405 is provided on the outer arc surface of damping rod 404, the damping ring 405 is slidably damped connected to the top of pressing part 402, an arc-shaped pressing part 406 is fixedly connected to the bottom of damping rod 404, the arc-shaped pressing part 406 contacts and presses the top of top arc-shaped limiting part 309.

[0031] The specific working principle is as follows: the air pressure of the pneumatic telescopic rod 2 is adjusted to control the lifting and lowering of the overall structure, providing a stable power foundation.

[0032] By utilizing the combination of the arc-shaped limiting component and the spring 305 buffer structure, the rollers of different diameters can be securely fixed, avoiding wear caused by rigid contact.

[0033] Phase 1: Initial Positioning

[0034] The pneumatic telescopic rod 2 is connected to the air source through the bottom docking joint, and the control valve adjusts the internal air pressure to raise the telescopic rod to the working height.

[0035] The lifting bracket 301 drives the bottom arc-shaped limiting component 307 to move to the waiting position below the roller shaft;

[0036] Phase Two: Clamping and Fixing

[0037] The sliding column 303 slides within the sliding groove 302, causing the bottom arc-shaped limiting piece 307 to conform to the bottom contour of the roller shaft.

[0038] Spring 305 provides adaptive clamping force through slider 304 to ensure full contact between limiter and roller shaft;

[0039] Rotating the threaded part 308 causes the top arc-shaped limiting part 309 to press down, forming a complete enclosure together with the bottom limiting part.

[0040] Phase 3: Pressure Regulation

[0041] Rotate the threaded connecting rod 401 to adjust the height position of the pressing part 402;

[0042] Damping rod 404 provides stable downforce through damping ring 405;

[0043] The arc-shaped pressing part 406 eventually contacts the top limiting part, forming a three-stage pressure transmission system. Furthermore, the friction between the damping ring 405 and the pressing part 402 can prevent the arc-shaped limiting part from reciprocating horizontally and swaying without stopping.

[0044] Phase 4: Operation and Maintenance

[0045] During operation, spring 305 continuously provides cushioning and shock absorption.

[0046] When adjustments are needed, the height of the pneumatic telescopic rod can be changed via the control valve;

[0047] During maintenance, simply rotate the threaded part 308 in the opposite direction to quickly release the fixed state.

[0048] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments, which is intended to enable those skilled in the art to understand and apply the present invention. However, it should not be assumed that the specific implementation of the present invention is limited to these descriptions.

Claims

1. A wear-resistant structure for a coal mill roller frame, comprising a base (1) and a pneumatic telescopic rod (2) fixedly connected to its top, characterized in that, The top telescopic end of the pneumatic telescopic rod (2) is fixedly connected to a limiting component (3) for limiting the rotation of the rotating roller shaft. The top of the limiting component (3) is connected to a pressing component (4) for pressing and fixing.

2. The wear-resistant structure for a coal mill roller frame according to claim 1, characterized in that, The bottom side of the pneumatic telescopic rod (2) is provided with a docking joint, and the docking joint is provided with a control valve. The control valve is used to control the internal air pressure of the pneumatic telescopic rod (2).

3. The wear-resistant structure for a coal mill roller frame according to claim 2, characterized in that, The limiting component (3) includes a lifting bracket (301) fixedly connected to the top telescopic end of the pneumatic telescopic rod (2). The lifting bracket (301) is provided with two symmetrically distributed sliding slots (302), and a sliding column (303) is slidably connected to the inner wall of the sliding slots (302).

4. The wear-resistant structure for a coal mill roller frame according to claim 3, characterized in that, The bottom of the sliding column (303) is fixedly connected to a sliding member (304), the sliding member (304) is slidably connected to the bottom of the lifting bracket (301), a spring (305) is fixedly connected to the side of the sliding member (304), and a spring bracket (306) is fixedly connected to the other end of the spring (305). The spring bracket (306) is fixedly set at the center of the bottom of the lifting bracket (301).

5. The wear-resistant structure for a coal mill roller frame according to claim 4, characterized in that, The spring (305) and the slider (304) are symmetrically arranged on both sides of the spring bracket (306), and the top of the slider (303) is fixedly connected to the bottom arc-shaped limiting member (307).

6. The wear-resistant structure for a coal mill roller frame according to claim 5, characterized in that, The bottom arc-shaped limiting member (307) has threaded connections at both ends of its top end, and threaded members (308) are slidably connected to the top arc-shaped limiting member (309) on the outer arc surface of the threaded member (308). The top of the threaded member (308) presses against the top of the top arc-shaped limiting member (309), and the top arc-shaped limiting member (309) has the same curvature as the bottom arc-shaped limiting member (307).

7. The wear-resistant structure for a coal mill roller frame according to claim 6, characterized in that, The pressing component (4) includes a threaded connecting rod (401) rotatably connected to the top of the lifting bracket (301). A pressing element (402) is slidably connected to the outer arc surface of the top of the threaded connecting rod (401). The threaded connecting rod (401) contacts and presses the top of the pressing element (402). A through pressing groove (403) is provided at the center of the pressing element (402).

8. The wear-resistant structure for a coal mill roller frame according to claim 7, characterized in that, A damping rod (404) is slidably connected to the inner wall of the pressing groove (403). A damping ring (405) is provided on the outer arc surface of the damping rod (404). The damping ring (405) is slidably damped connected to the top of the pressing member (402). An arc-shaped pressing member (406) is fixedly connected to the bottom of the damping rod (404). The arc-shaped pressing member (406) contacts and presses against the top of the top arc-shaped limiting member (309).

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