A coal mill roller and table liner measuring tool
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN LANCHAO ELECTRIC POWER CHECKING & MAINTAIN CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-08-07
AI Technical Summary
[0002]因磨煤机厂家无配套专用工具,磨盘衬瓦及磨辊间隙测量一般采用自制测量尺,在现场磨煤机内部检查时,但因设备运行时间较长,磨损较为严重,需要对磨煤机磨盘衬瓦及磨辊辊皮进行测量,因此需要测量工具进行测量来检测磨损程度
[0008]1. This utility model connects a set of arc-shaped measuring plates using a set of rectangular baffles, making it easier to place the entire tool between the liner and the roller skin during measurement. An upper fixed plate and a lower fixed plate are installed and fixed between the set of arc-shaped measuring plates. A telescopic measuring plate is inserted into the upper fixed plate, positioning it between the arc-shaped measuring plates. A first spring is fitted onto the lower column of the measuring plate, guiding the first spring. The lower part of the first spring is inserted into and connected to a spring seat groove, fixing the first spring within the groove. The first spring applies an upward elastic thrust to the telescopic measuring plate, causing the telescopic measuring plate to... The tool exhibits an upward movement tendency. During use, the curved measuring plate has a side insertion end, facilitating insertion into the gap between the lining and the roller skin for measurement. After cleaning the lining of coal dust, the user places the convex side of the curved measuring plate against the lining and the concave side against the roller skin. Using the graduated markings on the curved measuring plate, the telescopic measuring plate moves upward under the action of a spring, pressing against the roller skin. The extension length of the telescopic measuring plate, along with the graduations, measures the distance between the lining and the roller skin. This tool is convenient and practical for measuring grinding disc linings and roller skins. Because grinding rollers and linings vary in thickness depending on the manufacturer, the elastic extension of the telescopic measuring plate allows for measuring the distance between them due to different thicknesses.
Smart Images

Figure CN224608336U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coal mills, and in particular to a measuring tool for coal mill grinding rollers and grinding disc liners. Background Technology
[0002] Because coal mill manufacturers do not have dedicated tools, the measurement of the gap between the grinding disc liner and the grinding roller is generally done using a self-made measuring ruler. However, during on-site inspections inside the coal mill, due to the long operating time of the equipment and the severe wear, it is necessary to measure the grinding disc liner and the grinding roller skin. Therefore, measuring tools are needed to measure and detect the degree of wear. Summary of the Invention
[0003] This utility model addresses the aforementioned shortcomings of the existing technology by providing a measuring tool for coal mill rollers and grinding disc liners suitable for measuring the work of measuring coal mill rollers and grinding disc liners in boiler professional coal mills.
[0004] The objective of this utility model is achieved through the following technical solution:
[0005] A measuring tool for grinding rollers and grinding disc liners of a coal mill includes an arc-shaped measuring plate, a handle, a positioning and fixing sleeve, a rectangular baffle, an upper fixing plate, a telescopic measuring plate, a lower fixing plate, a first spring, a telescopic sleeve, a second spring, and a telescopic insertion rod. One end of the arc-shaped measuring plate has a side insertion end, and the other end is connected to the handle. The rectangular baffle is connected to the arc-shaped measuring plate, and the arc-shaped measuring plates are symmetrically arranged at both ends of the rectangular baffle. A set of rectangular baffles is distributed between a set of arc-shaped measuring plates. The upper fixing plate is connected to the arc-shaped measuring plates at both ends, and the lower fixing plate is also connected to the arc-shaped measuring plates at both ends. The telescopic measuring plate is inserted into the upper fixing plate and slides within the upper fixing plate. The lower part of the telescopic measuring plate has a measuring plate lower column, and a set of measuring plate lower columns are distributed at the lower part of the telescopic measuring plate. The upper part of the first spring is sleeved on the measuring plate lower column.
[0006] The upper part of the No. 1 spring abuts against the telescopic measuring plate. The lower fixed plate has a spring seat groove. The lower part of the No. 1 spring is inserted into the spring seat groove. The side of the arc-shaped measuring plate is connected to the positioning and fixing sleeve. The positioning and fixing sleeve has a fixing sleeve inner hole. The side of the telescopic sleeve has a sleeve side rod. The sleeve side rods are symmetrically arranged on both sides of the telescopic sleeve. The sleeve side rods are adapted to the fixing sleeve inner hole. The sleeve side rods are inserted into the fixing sleeve inner hole and rotate within the fixing sleeve inner hole.
[0007] The telescopic rod is adapted to the telescopic sleeve. The telescopic rod is inserted into the telescopic sleeve and slides inside the telescopic sleeve. The side of the telescopic rod has a rod-side support. The side of the rod-side support is in contact with the rectangular baffle. The second spring is inserted into the telescopic sleeve. One end of the second spring abuts against the telescopic sleeve, and the other end of the second spring abuts against the telescopic rod. Beneficial effects
[0008] 1. This utility model connects a set of arc-shaped measuring plates using a set of rectangular baffles, making it easier to place the entire tool between the liner and the roller skin during measurement. An upper fixed plate and a lower fixed plate are installed and fixed between the set of arc-shaped measuring plates. A telescopic measuring plate is inserted into the upper fixed plate, positioning it between the arc-shaped measuring plates. A first spring is fitted onto the lower column of the measuring plate, guiding the first spring. The lower part of the first spring is inserted into and connected to a spring seat groove, fixing the first spring within the groove. The first spring applies an upward elastic thrust to the telescopic measuring plate, causing the telescopic measuring plate to... The tool exhibits an upward movement tendency. During use, the curved measuring plate has a side insertion end, facilitating insertion into the gap between the lining and the roller skin for measurement. After cleaning the lining of coal dust, the user places the convex side of the curved measuring plate against the lining and the concave side against the roller skin. Using the graduated markings on the curved measuring plate, the telescopic measuring plate moves upward under the action of a spring, pressing against the roller skin. The extension length of the telescopic measuring plate, along with the graduations, measures the distance between the lining and the roller skin. This tool is convenient and practical for measuring grinding disc linings and roller skins. Because grinding rollers and linings vary in thickness depending on the manufacturer, the elastic extension of the telescopic measuring plate allows for measuring the distance between them due to different thicknesses.
[0009] 2. This utility model features a positioning and fixing sleeve installed on an arc-shaped measuring plate. A telescopic rod is inserted into the telescopic sleeve, and together with a second spring, forms an elastic telescopic rod. This telescopic rod is installed between a set of arc-shaped measuring plates via the insertion of the sleeve's side rod into the inner hole of the fixing sleeve. When rotation is not used, the side support of the rod is brought into contact with the rectangular baffle, allowing the telescopic rod to retract between the set of arc-shaped measuring plates. During use, rotating the telescopic rod causes the upper and lower ends of the two telescopic rods to abut against the ends of the lining and roller skin, ensuring the stability of the tool. This prevents slippage between the upper part of the telescopic measuring plate and the lower edge of the roller skin during the measurement of the grinding roller and grinding disc lining of a coal mill. This tool is not only simple in structure and easy to use, but also has low production costs. Furthermore, it makes operation safer, easier, and less strenuous. This measuring tool can be effectively recycled, and the materials used in its manufacture are corrosion-resistant and wear-resistant to ensure measurement accuracy. Attached Figure Description
[0010] Figure 1 This is a top view of a measuring tool for the grinding rollers and grinding disc liners of a coal mill, as described in this utility model.
[0011] Figure 2 This is a cross-sectional view of a measuring tool for a coal mill grinding roller and grinding disc liner, as described in this utility model.
[0012] Figure 3 This is a schematic diagram of the arc-shaped measuring plate and telescopic measuring plate described in this utility model.
[0013] Figure 4This is a cross-sectional view of the telescopic sleeve and telescopic insertion rod described in this utility model. Detailed Implementation
[0014] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:
[0015] Example 1:
[0016] A measuring tool for the grinding rollers and grinding disc liners of a coal mill includes an arc-shaped measuring plate 01, a handle 02, a positioning and fixing sleeve 03, a rectangular baffle 05, an upper fixing plate 06, a telescopic measuring plate 07, a lower fixing plate 08, a first spring 10, a telescopic sleeve 12, a second spring 13, and a telescopic insertion rod 14. One end of the arc-shaped measuring plate 01 has a side insertion end 11, which facilitates insertion into the gap between the liner and the roller skin for measurement. The other end of the arc-shaped measuring plate 01 is connected to the handle 02. The rectangular baffle 05 is connected to the arc-shaped measuring plate 01, and the arc-shaped measuring plates 01 are symmetrically arranged at both ends of the rectangular baffle 05. A set of rectangular baffles 05 are distributed between a set of arc-shaped measuring plates 01. A baffle 05 connects a set of arc-shaped measuring plates 01, making it easier to place the entire tool between the liner and the roller skin during measurement. The upper fixed plate 06 is connected to the arc-shaped measuring plates 01 at both ends, and the lower fixed plate 08 is also connected to the arc-shaped measuring plates 01 at both ends. The upper fixed plate 06 and the lower fixed plate 08 are installed and fixed between the set of arc-shaped measuring plates 01. The telescopic measuring plate 07 is inserted into the upper fixed plate 06, so that the telescopic measuring plate 07 slides within the set of arc-shaped measuring plates 01. The lower part of the telescopic measuring plate 07 has a measuring plate lower column 17, and a set of measuring plate lower columns 17 are distributed in the lower part of the telescopic measuring plate 07. The upper part of the first spring 10 is sleeved on the measuring plate lower column 17, and the measuring plate lower column 17 guides the first spring 10.
[0017] Example 2:
[0018] The upper part of the first spring 10 of this utility model abuts against the telescopic measuring plate 07. The lower fixed plate 08 has a spring seat groove 09. The lower part of the first spring 10 is inserted into the spring seat groove 09 and connected to the spring seat groove 09, so that the first spring 10 is installed and fixed in the spring seat groove 09. The first spring 10 applies an upward elastic thrust to the telescopic measuring plate 07, so that the telescopic measuring plate 07 has an upward movement tendency. After the user cleans the coal dust from the lining tile, the convex surface of the arc-shaped measuring plate 01 is close to the lining tile, and the concave surface of the arc-shaped measuring plate 01 is close to the roller skin. Using the scale on the arc-shaped measuring plate 01, the telescopic measuring plate 07 moves upward under the action of the first spring 10 and presses against the roller skin. The length of the telescopic measuring plate 07 extending and the scale on the arc-shaped measuring plate 01 are used to measure the distance between the lining tile and the roller skin. This tool is convenient to use for measuring the grinding disc lining tile and the grinding roller skin and is highly practical. Because the grinding roller and the lining tile are manufactured by different companies, their thicknesses also vary. The elastic extension and retraction of the telescopic measuring plate 07 can measure the distance between the two caused by different thicknesses. The side of the arc-shaped measuring plate 01 is connected to the positioning and fixing sleeve 03, which is installed and fixed on the arc-shaped measuring plate 01. The positioning and fixing sleeve 03 has a fixing sleeve inner hole 04. The telescopic sleeve 12 has a sleeve side rod 15 on its side. The sleeve side rod 15 is symmetrically arranged on both sides of the telescopic sleeve 12. The sleeve side rod 15 is adapted to the fixing sleeve inner hole 04. The sleeve side rod 15 is inserted into the fixing sleeve inner hole 04 and rotates within the fixing sleeve inner hole 04.
[0019] Example 3:
[0020] The telescopic rod 14 of this utility model is adapted to the telescopic sleeve 12. The telescopic rod 14 is inserted into the telescopic sleeve 12 and slides within the telescopic sleeve 12. The side of the telescopic rod 14 has a rod-side support 16, which is in contact with the rectangular baffle 05. A second spring 13 is inserted into the telescopic sleeve 12, with one end of the second spring 13 abutting against the telescopic sleeve 12 and the other end abutting against the telescopic rod 14. The telescopic rod 14, inserted into the telescopic sleeve 12, together with the telescopic sleeve 12 and the second spring 13, forms an elastic telescopic rod. This telescopic rod passes through the sleeve side... The rod 15 is inserted into the inner hole 04 of the fixed sleeve and installed between a set of arc-shaped measuring plates 01. When rotation is not used, the side support 16 of the insertion rod is brought into contact with the rectangular baffle 05, allowing the telescopic rod to be stored between the set of arc-shaped measuring plates 01. In use, rotating the telescopic rod causes the upper and lower ends of the two telescopic rods to abut against the ends of the lining and roller skin, ensuring the stability of the tool. This prevents the upper part of the telescopic measuring plate 07 from slipping against the lower edge of the roller skin during the measurement of the grinding roller and grinding disc lining of the coal mill. This tool is not only simple in structure, easy to use, and low in production cost, but also safer, easier, and less strenuous during use. This measuring tool can be effectively recycled, and the materials used in its manufacture are corrosion-resistant and wear-resistant to ensure measurement accuracy.
[0021] Example 4:
[0022] The installation steps of this utility model are as follows: First, connect both ends of the rectangular baffle 05 to a set of arc-shaped measuring plates 01. Insert the telescopic measuring plate 07 into the upper fixing plate 06. Sleeve the upper part of the first spring 10 onto the lower column 17 of the measuring plate. Insert the lower part of the first spring 10 into the spring seat groove 09. Connect both ends of the upper fixing plate 06 to the arc-shaped measuring plate 01. Connect both ends of the lower fixing plate 08 to the arc-shaped measuring plate 01. Insert the second spring 13 into the telescopic sleeve 12. Insert the telescopic rod 14 into the telescopic sleeve 12. Insert the sleeve side rod 15 into the inner hole 04 of the fixing sleeve. Connect the positioning fixing sleeve 03 to the arc-shaped measuring plate 01.
[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A measuring tool for coal mill grinding rollers and grinding disc liners, characterized in that: The system includes an arc-shaped measuring plate (01), a handle (02), a positioning and fixing sleeve (03), a rectangular baffle (05), an upper fixing plate (06), a telescopic measuring plate (07), a lower fixing plate (08), a first spring (10), a telescopic sleeve (12), a second spring (13), and a telescopic insertion rod (14). One end of the arc-shaped measuring plate (01) has a side insertion end (11), and the other end of the arc-shaped measuring plate (01) is connected to the handle (02). The rectangular baffle (05) is connected to the arc-shaped measuring plate (01), and the arc-shaped measuring plate (01) is positioned at both ends of the rectangular baffle (05). The setup consists of a set of rectangular baffles (05) distributed between a set of arc-shaped measuring plates (01), an upper fixed plate (06) with both ends connected to the arc-shaped measuring plates (01), a lower fixed plate (08) with both ends connected to the arc-shaped measuring plates (01), a telescopic measuring plate (07) inserted into the upper fixed plate (06), the telescopic measuring plate (07) sliding within the upper fixed plate (06), the lower part of the telescopic measuring plate (07) having a measuring plate lower column (17), a set of measuring plate lower columns (17) distributed in the lower part of the telescopic measuring plate (07), and the upper part of a No. 1 spring (10) sleeved on the measuring plate lower column (17).
2. The measuring tool for coal mill grinding rollers and grinding disc liners according to claim 1, characterized in that: The upper part of the first spring (10) abuts against the telescopic measuring plate (07), the lower fixed plate (08) has a spring seat groove (09), the lower part of the first spring (10) is inserted into the spring seat groove (09), the side of the arc-shaped measuring plate (01) is connected to the positioning fixed sleeve (03), the positioning fixed sleeve (03) has a fixed sleeve inner hole (04), the side of the telescopic sleeve (12) has a sleeve side rod (15), the sleeve side rod (15) is symmetrically arranged on both sides of the telescopic sleeve (12), the sleeve side rod (15) is adapted to the fixed sleeve inner hole (04), the sleeve side rod (15) is inserted into the fixed sleeve inner hole (04), and the sleeve side rod (15) rotates in the fixed sleeve inner hole (04).
3. A measuring tool for coal mill grinding rollers and grinding disc liners according to claim 2, characterized in that... The telescopic rod (14) is adapted to the telescopic sleeve (12). The telescopic rod (14) is inserted into the telescopic sleeve (12). The telescopic rod (14) slides inside the telescopic sleeve (12). The side of the telescopic rod (14) has a rod side support (16). The side of the rod side support (16) is in contact with the rectangular baffle (05).
4. A measuring tool for coal mill grinding rollers and grinding disc liners according to claim 2, characterized in that... The second spring (13) is inserted into the telescopic sleeve (12). One end of the second spring (13) abuts against the telescopic sleeve (12), and the other end of the second spring (13) abuts against the telescopic rod (14).