A crusher roll spacing adjustment device

Abstract

A crusher roller gap adjustment device comprises an adjusting shaft horizontally mounted on the crusher housing. A fixed screw is threadedly connected to the front end of the adjusting shaft, and a movable bearing seat is connected to the front end of the fixed screw. The movable bearing seat and the end of the moving roller are integrally assembled. A thin nut is installed on the fixed screw, and a front sleeve shaft is installed on the adjusting shaft. A front sleeve is installed on the outside of the front sleeve shaft. A fixed seat is installed on the inner wall of the crusher housing, and the front sleeve shaft is located within the fixed seat. A compression spring is fitted between the thin nut and the front sleeve on the fixed screw and adjusting shaft. This crusher roller gap adjustment device adds a front sleeve shaft device to the single-spring adjusting device, allowing for rapid adjustment of the roller gap. The adjustment is precise and calculable, greatly reducing downtime and improving production efficiency. It is also easy to operate; when adjusting large roller gaps, the adjusting screw is not damaged, saving manpower.

Description

Technical Field

[0001] This utility model relates to the field of grain crushing technology. Background Technology

[0002] Currently, there are two types of roller gap adjustment devices for crushers on the market: a double-spring adjustment device and a single-spring adjustment device. The double-spring adjustment device connects the fixed and moving rollers with a screw, and adjusts the roller gap using two springs. This type of adjustment device is relatively cumbersome, requiring a long adjustment time each time, especially when the roller gap is large. It necessitates removing the cover and adjusting both springs simultaneously. Furthermore, in fine-tuning situations, when adjusting the screw nut at the large spring end, tightening the nut one full turn does not accurately determine the moving roller's movement distance. Multiple measurements of the roller gap using a feeler gauge are required, and continuous adjustments are needed to achieve the desired gap. However, the advantage of this type of adjustment device is that the screw only bears tensile force, not bending force, resulting in less screw damage. The other type is the single-spring adjustment device, which connects only to the moving roller and uses a single screw and spring for adjustment. Its advantages are simple operation and accurate calculation of the moving roller's movement distance with one rotation of the nut. However, its disadvantages are that the screw will bend as the moving roller moves a greater distance, the torque will increase, the screw will be damaged, and the adjustment range is small. Summary of the Invention

[0003] To address the issues of precise roller spacing adjustment and screw not bearing bending force during the adjustment of roller spacing in a crusher, this utility model provides a roller spacing adjustment device for a crusher.

[0004] The technical solution adopted by this utility model to achieve the above-mentioned objectives is as follows: a crusher roller spacing adjustment device, wherein an adjustment shaft 14 is horizontally installed on the crusher housing, a fixed screw 1 is threadedly connected to the front end of the adjustment shaft 14, a movable bearing seat 15 is connected to the front end of the fixed screw 1, and the movable bearing seat 15 and the end of the movable roller 16 are integrally assembled; a thin nut 2 is installed on the fixed screw 1, a front sleeve shaft 8 is installed on the adjustment shaft 14, a front sleeve 5 is installed on the outside of the front sleeve shaft 8, a fixed seat 7 is installed on the inner wall of the crusher housing, and the front sleeve shaft 8 is located inside the fixed seat 7; a compression spring 4 is fitted on the fixed screw 1 and the adjustment shaft 14 between the thin nut 2 and the front sleeve 5.

[0005] A fixed sleeve 13 is installed on the crusher housing, and a thrust ball bearing 9 is installed between the adjustable shaft 14 and the fixed sleeve 13.

[0006] The rear end of the adjustable shaft 14 is connected to the handwheel 11 via a flat key 10.

[0007] A locking handle 12 is installed on the fixing sleeve 13.

[0008] A spring retaining ring 3 is provided on the fixed lead screw 1 between the compression spring 4 and the thin nut 2.

[0009] This utility model discloses a crusher roller gap adjustment device that adds a front sleeve shaft device to the single spring adjustment device. This allows for rapid adjustment of the roller gap with precise and calculable adjustment, significantly reducing downtime and improving production efficiency. Furthermore, it is easy to operate; adjusting large roller gaps does not damage the adjustment screw, saving manpower. Attached Figure Description

[0010] Figure 1 This is the main view of the crusher roller spacing adjustment device of this utility model.

[0011] Figure 2 This is a top view of the crusher roller spacing adjustment device of this utility model.

[0012] In the diagram: 1. Fixed lead screw, 2. Thin nut, 3. Spring retaining ring, 4. Compression spring, 5. Front sleeve, 6. Bolt, 7. Fixed seat, 8. Front sleeve shaft, 9. Thrust ball bearing, 10. Flat key, 11. Handwheel, 12. Locking handle, 13. Fixed sleeve, 14. Adjustable shaft, 15. Movable bearing seat, 16. Moving roller. Detailed Implementation

[0013] The structure of the crusher roller spacing adjustment device of this utility model is as follows: Figure 1 and Figure 2 The diagram shows a schematic of the adjusting device on one side of the roller. An adjusting shaft 14 is horizontally mounted on the crusher housing. A fixed sleeve 13 is mounted on the crusher housing. A thrust ball bearing 9 is installed between the adjusting shaft 14 and the fixed sleeve 13. A locking handle 12 is installed on the fixed sleeve 13. A fixed screw 1 is threaded to the front end of the adjusting shaft 14. A movable bearing seat 15 is connected to the front end of the fixed screw 1. The movable bearing seat 15 and the end of the moving roller 16 are integrally assembled. A thin nut 2 is installed on the fixed screw 1. A spring retaining ring 3 is provided on the fixed screw 1 between the compression spring 4 and the thin nut 2. A front sleeve shaft 8 is installed on the adjusting shaft 14. A front sleeve 5 is installed on the outside of the front sleeve shaft 8. A fixed seat 7 is installed on the inner wall of the crusher housing. The front sleeve shaft 8 is located inside the fixed seat 7. A compression spring 4 is fitted on the fixed screw 1 and the adjusting shaft 14 between the thin nut 2 and the front sleeve 5.

[0014] In use, first tighten the thin nut 2 to compress the compression spring 4 by a certain amount, which serves as the initial spring preload. Rotate the gravity digital handwheel 11 to drive the adjusting shaft 14 to rotate. The adjusting shaft 14 is connected to the fixed lead screw 1 by a thread. Therefore, when the adjusting shaft 14 rotates, the fixed lead screw 1 cannot rotate, but can only move forward or backward. The fixed lead screw 1 is connected to the movable bearing seat 15, and the movable bearing seat 15 is assembled with the moving roller 16 as one unit. Therefore, when the fixed lead screw 1 moves forward or backward, it drives the moving roller 16 to move forward or backward, thereby achieving the purpose of adjusting the roller spacing. In this mechanism, the thread pitch of the adjusting shaft 14 is fixed. When the gravity digital handwheel 11 rotates 360°, the fixed lead screw 1 will move forward or backward by a distance equal to one thread pitch. The forward or backward distance of the moving roller can be calculated based on the proportional relationship. In this mechanism, the fixed seat 7 is fixedly connected to the equipment frame (crusher housing). The front sleeve 5 and the front sleeve shaft 8 can rotate on the fixed seat 7, but cannot move left or right. When the roll gap needs to be adjusted to be larger, the front sleeve shaft 8 and the front sleeve 5 in this mechanism rotate by a corresponding angle as the fixed lead screw 1 moves, thereby causing the adjusting shaft 14 to rotate and move accordingly. This ensures that the adjusting shaft 14 and the fixed lead screw 1 are not subjected to bending forces, making the adjustment process simple and convenient. The addition of a thrust ball bearing 9 to this mechanism reduces frictional resistance when the gravity digital handwheel 11 drives the adjusting shaft 14 to rotate, resulting in a smaller rotational torque and saving manpower.

Claims

1. A crusher roll spacing adjustment device characterized by: An adjusting shaft (14) is installed laterally on the crusher housing. The front end of the adjusting shaft (14) is threaded to a fixing screw (1). The front end of the fixing screw (1) is connected to a movable bearing seat (15). The movable bearing seat (15) and the end of the moving roller (16) are assembled together. A thin nut (2) is installed on the fixing screw (1). A front sleeve shaft (8) is installed on the adjusting shaft (14). A front sleeve (5) is installed on the outside of the front sleeve shaft (8). A fixing seat (7) is installed on the inner wall of the crusher housing. The front sleeve shaft (8) is located inside the fixing seat (7). A compression spring (4) is fitted between the thin nut (2) and the front sleeve (5) on the fixing screw (1) and the adjusting shaft (14).

2. A crusher roll spacing adjustment device according to claim 1, characterised in that: A fixed sleeve (13) is installed on the crusher housing, and a thrust ball bearing (9) is installed between the adjusting shaft (14) and the fixed sleeve (13).

3. The crusher roller spacing adjustment device according to claim 1, characterized in that: The rear end of the adjusting shaft (14) is connected to the handwheel (11) via a flat key (10).

4. A crusher roll spacing adjustment device according to claim 2, characterised in that: A locking handle (12) is installed on the fixing sleeve (13).

5. A crusher roll spacing adjustment device as claimed in claim 1, wherein: A spring retainer (3) is provided on the fixed screw (1) between the compression spring (4) and the thin nut (2).

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