Turning device for on-site repair of crusher press rolls

Abstract

The utility model discloses a turning device for on-site repair of crusher compression roller in the field of machining equipment, including motor, support axle and tool rest, and each is equipped with a support seat in support axle both ends, and the rotatory setting of first screw rod is arranged between two support seats, and the sliding setting of tool rest is arranged on support axle, and is connected with first screw rod threadedly, motor and first screw rod transmission connection, the sliding setting of tool rest has been provided with the feed mechanism, whole turning device can be installed on the frame of crusher compression roller both ends through support seat, and makes the axis of support axle with the axis of crusher compression roller parallel. The utility model directly fixes the turning equipment on the frame of crusher, and utilizes the autorotation of crusher compression roller and the axial feeding of motor control turning cutter to carry out the turning of compression roller, guarantees the stability of turning equipment installation, can improve the machining accuracy of turning through the strong orientation of its with crusher compression roller, guarantees the repaired crusher compression roller to satisfy the production process requirement.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment, and in particular to a turning device for on-site repair of crusher rollers. Background Technology

[0002] Currently, crushers are frequently used in iron smelting and coal mining enterprises to crush materials such as coal and coke. Crushers primarily utilize the compressive force generated by the relative rotation of two pairs of upper and lower rollers to crush materials and achieve the required material parameters. After prolonged operation, the roller surface becomes uneven, resulting in material crushing effects that do not meet production process requirements. Therefore, the outer surface of the rollers needs to be machined periodically to restore their normal crushing function. The main method for repairing pressure rollers currently involves disassembling them and then machining them on a lathe. The disadvantage of this method is that the pressure rollers are large, disassembly and assembly are cumbersome, and they are difficult to secure on the machine. Alternatively, some methods involve moving the machining equipment next to the crusher for on-site machining, such as the machining device for repairing rollers disclosed in patent document CN215698010U. The disadvantage of this method is that the machining equipment is not securely fixed to the crusher's pressure rollers, lacking strong positioning, making it difficult to control machining accuracy. Utility Model Content

[0003] To overcome the aforementioned shortcomings of existing crusher rollers, the technical problem to be solved by this utility model is to provide a turning device for on-site repair of crusher rollers.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A turning device for on-site repair of crusher rollers includes a motor, a support shaft, and a tool holder. Each end of the support shaft has a fixed support base, and a first lead screw parallel to the support shaft is rotatably mounted between the two support bases. The tool holder is slidably mounted on the support shaft and threadedly connected to the first lead screw. The motor is fixed to a mounting plate on one of the support bases and is driven by a reducer to one end of the first lead screw. A feed mechanism is slidably mounted on the tool holder, with its feed direction perpendicular to the axis of the support shaft. The feed mechanism is equipped with a turning tool. The entire turning device can be mounted on frames at both ends of the crusher roller via the support bases, ensuring that the axis of the support shaft is parallel to the axis of the crusher roller.

[0005] Furthermore, the motor is a variable frequency motor.

[0006] Furthermore, a handwheel is provided at the end of the first lead screw away from the motor.

[0007] Furthermore, the feed mechanism includes a dovetail slide rail and a second lead screw arranged parallel to the tool holder, and a tool holder that is slidably connected to the dovetail slide rail and threadedly connected to the second lead screw. The second lead screw is rotatably connected to the tool holder and has a handle at one end. The turning tool is mounted on the tool holder.

[0008] Furthermore, the tool holder is also threaded with a locking bolt, which can pass through the tool holder and abut against the tool post.

[0009] The beneficial effects of this utility model are as follows: the turning equipment is directly fixed on the frame of the crusher by two support seats, and the movement of the tool holder is controlled by a screw and nut transmission mechanism composed of a motor, a support shaft, a first screw, and a tool holder. The turning work of the crusher pressure roller is realized by the self-rotation of the crusher pressure roller. This not only ensures the stability of the installation of the turning equipment, but also achieves strong positioning between it and the crusher pressure roller, thereby improving the machining accuracy of the turning and ensuring that the repaired crusher pressure roller meets the production process requirements. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the feed mechanism of this utility model.

[0011] The markings in the diagram are as follows: 1-motor, 2-support shaft, 3-tool holder, 4-support base, 5-first lead screw, 6-feed mechanism, 7-turning tool, 8-crusher pressure roller, 9-frame, 11-reducer, 41-mounting plate, 51-handwheel, 61-dovetail slide rail, 62-second lead screw, 63-tool holder, 64-handle, 65-locking bolt. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] It should be noted that if this utility model contains directional indicators such as up, down, left, right, front, and back, these terms are used to describe the relative positional relationships between components and are not specific references to the absolute positions of the components or the relationships between them. They are only used to explain the relative positional relationships and movement of the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly. If this utility model contains terms related to quantity such as "many," "multiple," or "several," these terms specifically refer to two or more.

[0014] like Figure 1 , Figure 2As shown, the present invention provides a turning device for on-site repair of crusher rollers, comprising a motor 1, a support shaft 2, and a tool holder 3. A support base 4 is fixedly mounted at each end of the support shaft 2, and a first lead screw 5 parallel to the support shaft 2 is rotatably mounted between the two support bases 4. The tool holder 3 is slidably mounted on the support shaft 2 and threadedly connected to the first lead screw 5. The motor 1 is fixed to a mounting plate 41 of one of the support bases 4 and is connected to one end of the first lead screw 5 via a reducer 11. A feed mechanism 6 is slidably mounted on the tool holder 3, the feed direction of which is perpendicular to the axis of the support shaft 2. A turning tool 7 is mounted on the feed mechanism 6. The entire turning device can be mounted on the frames 9 at both ends of the crusher roller 8 via the support bases 4, with the support shaft 2 parallel to the axis of the crusher roller 8 and the feed direction of the feed mechanism 6 perpendicular to the axis of the crusher roller 8. In current crushers, the frames 9 at both ends of the crusher roller 8 are generally H-beam-like columns. Therefore, through holes can be easily machined into the frames 9, and the support base 4 can be fixed to the frame 9 by bolts passing through the through holes. Additionally, the through holes can be made slightly larger to allow adjustment of the position of the support base 4 within a certain range in the vertical plane. Shims can also be added or removed between the support base 4 and the frame 9 to adjust the front-to-back position of the support base 4, thereby ensuring that the axis of the support shaft 2 is parallel to the axis of the crusher roller 8.

[0015] The usage process of this utility model is as follows: First, install the two support seats 4 onto the frame 9 at both ends of the crusher roller 8. During the installation process, first adjust the position of the support seats 4 using a level to ensure that the support shaft 2 is horizontal. Then, measure and adjust the distance from both ends of the support shaft 2 to the rotation axis of the crusher roller 8 by adding or removing shims to ensure that the support shaft 2 is parallel to the axis of the crusher roller 8. Then, move the cutter holder 3 to one end of the crusher roller 8 and adjust the feed mechanism 6 to control the single cutting amount. Finally, start the crusher to make the crusher roller 8 rotate, start the motor 1, and use the first lead screw 5 to drive the cutter holder 3 to move and cut the crusher roller 8. After the cutter holder 3 moves to the other end of the crusher roller 8, adjust the feed amount and make the motor 1 rotate in the opposite direction to cut the crusher roller 8 again. Repeat this cycle until the surface of the crusher roller 8 meets the process requirements.

[0016] In actual turning processes, to ensure turning quality and safety, high requirements are placed on the rotation speed of the crusher roller 8 and the feed speed of the cutting tool 7. For crusher rollers 8 of different materials and diameters, the commonly used rotation speed, feed speed, and single-pass depth of cut during turning can be determined by consulting relevant literature. Then, the rotation speed of the crusher roller 8 and the speed of the motor 1 are adjusted to ensure a balance between turning efficiency and quality. The crusher roller 8 is usually driven by a servo motor, whose speed can be easily adjusted. The motor 1 can be a frequency converter motor, and the speed can be adjusted by regulating the frequency of the AC power. Based on extensive testing, for a crusher roller 8 made of Zg35SiMn with a diameter of 1200mm, its rotation speed can be controlled at approximately 16 rpm, the feed speed of the tool holder 3 at approximately 22mm / min, and the single-pass depth of cut at approximately 0.2mm. This ensures stable operation of the motor 1 while achieving good turning efficiency and quality.

[0017] Before starting the motor 1 for turning, it is generally necessary to perform turning adjustments first. For ease of operation, a handwheel 51 is provided at the end of the first lead screw 5 away from the motor 1. During adjustments, the first lead screw 5 can be rotated by the handwheel 51 to move the tool holder 3, thereby controlling the position of the turning tool 7 and judging whether the feed rate is appropriate.

[0018] Regarding the structure of the feed mechanism 6, such as Figure 2 As shown, the feed mechanism 6 includes a dovetail slide rail 61 and a second lead screw 62 arranged parallel to the tool holder 3, and a tool holder 63 slidably connected to the dovetail slide rail 61 and threadedly connected to the second lead screw 62. The second lead screw 62 is rotatably connected to the tool holder 3, and one end of it is provided with a handle 64. The turning tool 7 is mounted on the tool holder 63. The dovetail slide rail 61 includes two rails, and the second lead screw 62 is located between the two dovetail slide rails 61, which can ensure the smoothness of the movement of the tool holder 63, thereby accurately adjusting the feed rate. The feed rate is adjusted by rotating the handle 64. To prevent the turning tool 7 from shifting during turning, at least one locking bolt 65 can be installed on the tool holder 63. The locking bolt 65 passes vertically through the tool holder 63 and is threaded to it. When it is necessary to fix the tool holder 63, simply tighten the locking bolt 65 so that its lower end abuts against the tool post 3. The tool holder 63 can be fixed by the friction between the locking bolt 65 and the tool post 3, as well as the friction between the tool holder 63 and the dovetail slide rail 61.

[0019] In summary, this utility model directly fixes the entire turning equipment to the frame 9 of the crusher through two support seats 4, which not only ensures the stability of the turning equipment installation, but also achieves strong positioning between it and the crusher pressure roller 8, thereby improving the machining accuracy of turning, ensuring that the repaired crusher pressure roller 8 meets the production process requirements, and is convenient and safe to operate, with good practicality and application value.

Claims

1. A turning device for on-site repair of crusher pressure rollers, characterized in that, The device includes a motor (1), a support shaft (2), and a tool holder (3). Each end of the support shaft (2) is fixedly provided with a support seat (4). A first lead screw (5) parallel to the support shaft (2) is rotatably provided between the two support seats (4). The tool holder (3) is slidably provided on the support shaft (2) and threadedly connected to the first lead screw (5). The motor (1) is fixed on the mounting plate (41) of one of the support seats (4) and is drivenly connected to one end of the first lead screw (5) through a reducer (11). A cutting mechanism (6) is slidably provided on the tool holder (3). The cutting direction of the cutting mechanism (6) is perpendicular to the axis of the support shaft (2). A turning tool (7) is provided on the cutting mechanism (6). The entire turning device can be installed on the frame (9) at both ends of the crusher roller (8) through the support seat (4) and the axis of the support shaft (2) is parallel to the axis of the crusher roller (8).

2. The turning device for on-site repair of crusher rollers as described in claim 1, characterized in that, The motor (1) is a variable frequency motor.

3. The turning device for on-site repair of crusher rollers as described in claim 1, characterized in that, A handwheel (51) is provided at the end of the first lead screw (5) away from the motor (1).

4. The turning device for on-site repair of crusher pressure rollers as described in claim 1, characterized in that, The feed mechanism (6) includes a dovetail slide rail (61) and a second lead screw (62) arranged parallel to the tool holder (3), and a tool holder (63) slidably connected to the dovetail slide rail (61) and threadedly connected to the second lead screw (62). The second lead screw (62) is rotatably connected to the tool holder (3) and has a handle (64) at one end. The turning tool (7) is arranged on the tool holder (63).

5. The turning device for on-site repair of crusher pressure rollers as described in claim 4, characterized in that, The tool holder (63) is also threaded with a locking bolt (65), which can pass through the tool holder (63) and abut against the tool post (3).

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