Three-roller crusher carrier roller gap adjusting structure
By using a motor-driven bidirectional lead screw and wedge-shaped slider, the gap between the crushing rollers of the three-roll crusher can be quickly adjusted, solving the problems of long adjustment time and high labor intensity in the existing technology, and achieving high production adaptability and flexible crushing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 洪文乔
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-17
AI Technical Summary
The existing three-roll crusher has a long adjustment time for the crushing roll spacing, high labor intensity, and high requirements for the operator's technical level, which cannot meet the production needs.
The motor drives the bidirectional lead screw to rotate, which in turn moves the wedge slider in the opposite direction. The inclined working surface of the wedge slider cooperates with the inclined surface of the wedge block to quickly adjust the gap between the second crushing roller and the first and third crushing rollers. The gap adjustment is achieved through the swing arm adjustment component.
It shortens the adjustment time, reduces the labor intensity of operators, improves production efficiency and equipment adaptability, and can flexibly adjust the crushing particle size according to different production needs to meet diverse production requirements.
Smart Images
Figure CN224507193U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of crusher technology, specifically relating to a three-roll crusher idler gap adjustment structure. Background Technology
[0002] A three-roll crusher is a device that uses three crushing rolls to crush materials. Its working principle is mainly based on the relative rotation and high extrusion pressure between the crushing rolls. The material first enters the crushing chamber between the upper two rolls and is subjected to the extrusion pressure of the relative rotation of the two rolls for the first crushing (coarse crushing). The material after coarse crushing immediately enters the crushing chamber of the lower two rolls and is subjected to secondary crushing (fine crushing) by the extrusion pressure of the lower two rolls. The crushed material is discharged through the discharge port and sent out by the conveying equipment.
[0003] Adjusting the distance between the two crushing rollers requires disengaging the coupling between the crushing rollers and the reducer, then changing the distance between the two crushing rollers. After the positions of the two crushing rollers are properly adjusted, the positions of the two crushing roller drive units mounted on the crusher casing are adjusted. Finally, the reducer output shaft is aligned with the crushing roller extension shaft. This adjustment process is time-consuming, labor-intensive, and requires a high level of skill from the operators, making it unsuitable for production needs. Utility Model Content
[0004] To overcome the problems of long adjustment time, high labor intensity, and high skill requirements for operators in existing crusher roller spacing adjustments, which cannot meet production needs, this utility model provides a three-roll crusher roller spacing adjustment structure. A motor drives a bidirectional lead screw to rotate, causing a wedge-shaped slider to move in the opposite direction. The inclined working surface of the wedge-shaped slider cooperates with the inclined surface of the wedge block, quickly converting the rotation of the lead screw into the swing of the swing arm adjustment component. This conveniently and quickly changes the spacing between the second crusher roller and the first and third crusher rollers, shortening the adjustment time and improving production efficiency. Operators only need to control the motor operation, effectively reducing their labor intensity. This allows the three-roll crusher to be adjusted according to different production needs.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A three-roll crusher roller gap adjustment structure mainly includes a bidirectional lead screw, a connecting block, a wedge-shaped slider, a motor, a swing arm adjustment assembly, a wedge-shaped block, and a pneumatic support rod. The bidirectional lead screw is horizontally installed inside the crusher housing through a bearing seat, and its two ends are provided with threaded sections with opposite directions of rotation. The bottom end of the connecting block is connected to the bidirectional lead screw, and the top end is connected to the housing. A pair of wedge-shaped sliders are respectively sleeved on the opposite threaded sections of the bidirectional lead screw through internal threads. The wedge-shaped sliders are provided with inclined working surfaces. The motor is installed on the outside of the housing through a flange seat, and its output shaft is connected to the end of the bidirectional lead screw. The swing arm adjustment assembly is installed on the housing, and the wedge-shaped block is fixedly installed on the swing arm adjustment assembly. The end of the wedge-shaped block is provided with an inclined surface that matches the inclined working surface. The bottom end of the pneumatic support rod is connected to the housing, and the top end is connected to the swing arm adjustment assembly. The second crushing roller is rotatably installed on the swing arm adjustment assembly, and the first and third crushing rollers are rotatably installed on the housing.
[0006] The swing arm adjustment assembly includes a rotating shaft, a swing arm, and an adjusting rod. The rotating shaft is rotatably mounted on the housing, the swing arm is rotatably mounted on the rotating shaft, the adjusting rod is installed between the swing arms, and the wedge block is fixedly mounted on the adjusting rod.
[0007] The tilt angle of the inclined working surface is set to 30°-60°.
[0008] The two reverse threaded sections of the bidirectional lead screw are of equal length and are symmetrically distributed on both sides of the central axis of the bidirectional lead screw.
[0009] The beneficial effects of this utility model are:
[0010] The following is a detailed description of the beneficial effects, based on the background technology and the claims:
[0011] The motor drives the bidirectional lead screw to rotate, causing the wedge-shaped slider to move in the opposite direction. The inclined working surface of the wedge-shaped slider cooperates with the inclined surface of the wedge block, which can quickly convert the rotation of the lead screw into the swing of the swing arm adjustment component. This allows for convenient and quick changes in the distance between the second crushing roller and the first and third crushing rollers, shortening the adjustment time and improving production efficiency. Operators only need to control the operation of the motor, effectively reducing the labor intensity of operators. The three-roll crusher can flexibly adjust the crushing particle size according to different production needs. For materials with different hardness and different particle size requirements, the best crushing effect can be achieved by adjusting the gap, meeting diverse production needs and improving the production adaptability and versatility of the equipment. Attached Figure Description
[0012] Figure 1 This is an isometric schematic diagram of the present invention.
[0013] Figure 2 This is a three-dimensional schematic diagram of the present invention.
[0014] Figure 3 This is a top view of the structure of this utility model.
[0015] Figure 4 This is a schematic diagram of the structure of this utility model viewed from below. Detailed Implementation
[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.
[0017] This utility model discloses a three-roll crusher idler gap adjustment structure. The structure mainly includes a bidirectional lead screw 1, a connecting block 2, wedge-shaped sliders 3, a motor 4, a swing arm adjustment assembly 5, wedge blocks 6, and a pneumatic support rod 7. The bidirectional lead screw 1 is horizontally installed inside the crusher housing via a bearing seat, and its two ends are provided with threaded sections 11 with opposite directions of rotation. The bottom end of the connecting block 2 is connected to the bidirectional lead screw 1, and the top end is connected to the housing. A pair of wedge-shaped sliders 3 are respectively threaded onto the bidirectional lead screw 1 via internal threads. On the opposite threaded section 11, the wedge-shaped slider 3 is provided with an inclined working surface. The motor 4 is installed on the outside of the machine housing through a flange seat. The output shaft is connected to the end of the bidirectional lead screw 1. The swing arm adjustment assembly 5 is installed on the machine housing. The wedge block 6 is fixedly installed on the swing arm adjustment assembly 5. The end of the wedge block 6 is provided with an inclined surface that matches the inclined working surface. The bottom end of the pneumatic support rod 7 is connected to the machine housing, and the top end is connected to the swing arm adjustment assembly 5. The second crushing roller 8 is rotatably installed on the swing arm adjustment assembly 5. The first crushing roller 9 and the third crushing roller 10 are rotatably installed on the machine housing.
[0018] like Figure 2 , Figure 3 , Figure 4 As shown, the swing arm adjustment assembly 5 includes a rotating shaft 51, a swing rod 52, and an adjusting rod 53. The rotating shaft 51 is rotatably mounted on the machine housing, the swing rod 52 is rotatably mounted on the rotating shaft 51, the adjusting rod 53 is installed between the swing rods 52, and the wedge block 6 is fixedly mounted on the adjusting rod 53. When the motor 4 is started, the output shaft of the motor 4 drives the bidirectional lead screw 1 to rotate. Since the threaded sections 11 at both ends of the bidirectional lead screw 1 rotate in opposite directions, the two wedge sliders 3 will move in opposite directions at the same time. As the wedge sliders 3 move, the inclined working surface and the inclined surface will push the wedge block 6 to move to the left or right, causing the swing rod 52 to swing around the rotating shaft 51. The second crushing roller 8 is mounted on the swing rod 51, and at the same time, it drives the second crushing roller 8 to move, thereby realizing the adjustment of the gap between the first crushing roller 9, the second crushing roller 8, and the third crushing roller 10.
[0019] like Figure 1 , Figure 2 , Figure 3As shown, the tilt angle of the inclined working surface is set to 30°-60°; this can provide sufficient thrust and stability, ensuring the accuracy and reliability of the gap adjustment.
[0020] like Figure 1 , Figure 2 , Figure 3 As shown, the two reverse threaded sections 11 of the bidirectional lead screw 1 are of equal length and are symmetrically distributed on both sides of the central axis of the bidirectional lead screw 1; this ensures that the two wedge-shaped sliders 3 move at equal distances, thereby making the movement of the second crushing roller 8 more stable and uniform, and further improving the accuracy and stability of the gap adjustment.
[0021] Work process:
[0022] Before the crusher starts working, the wedge slider 3 is located in the middle position of the bidirectional lead screw 1, the swing arm adjustment component 5 is in the initial position, the inclined surface of the wedge block 6 is in contact with the inclined working surface of the wedge slider 3 but no pressure is applied, and the gap between the first crushing roller 9, the second crushing roller 8 and the third crushing roller 10 is at the preset value. When the gap needs to be adjusted, the motor 4 is started, and the output shaft of the motor 4 drives the bidirectional lead screw 1 to rotate. Since the threaded sections 11 at both ends of the bidirectional lead screw 1 rotate in opposite directions, the two wedge sliders 3 will move in opposite directions at the same time. As the wedge sliders 3 move, the inclined working surface and the inclined surface will push the wedge block 6 to move to the left or right, causing the swing arm 52 to swing around the rotating shaft 51. The second crushing roller 8 is mounted on the swing arm 51, and at the same time, the second crushing roller 8 is moved, realizing the movement of the first crushing roller 9, the second crushing roller 8 and the third crushing roller 10. During the adjustment of the gap, the pneumatic support rod 7 automatically adjusts its length according to the position of the swing arm 52 to provide additional support and stability. This helps prevent the swing arm adjustment assembly 5 from swaying or becoming unstable during operation. Once the gap is adjusted to the desired value, the motor 4 is turned off, and the bidirectional lead screw 1 stops rotating. At this point, the wedge slider 3 is fixed in the new position, and the inclined surface of the wedge block 6 is in close contact with the inclined working surface, ensuring that the second crushing roller 8 remains in the adjusted position. The crusher can then begin crushing operations. If the gap needs to be adjusted again, simply reverse the motor 4 to rotate the bidirectional lead screw 1 in the opposite direction, thereby achieving reverse movement of the wedge slider 3 and the wedge block 6, and thus performing reverse gap adjustment.
[0023] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.
Claims
1. A three-roll crusher idler gap adjustment structure, characterized by: The aforementioned three-roll crusher idler gap adjustment structure includes a bidirectional lead screw (1), a connecting block (2), a wedge-shaped slider (3), a motor (4), a swing arm adjustment assembly (5), a wedge-shaped block (6), and a pneumatic support rod (7). The bidirectional lead screw (1) is horizontally installed inside the crusher housing via a bearing seat, and its two ends are provided with threaded sections (11) with opposite directions of rotation. The bottom end of the connecting block (2) is connected to the bidirectional lead screw (1), and the top end is connected to the housing. A pair of wedge-shaped sliders (3) are respectively threaded onto the opposite threaded sections (11) of the bidirectional lead screw (1) through internal threads. Block (3) has an inclined working surface. Motor (4) is installed on the outside of the machine housing through a flange seat. The output shaft is connected to the end of the double-acting screw (1). The swing arm adjustment assembly (5) is installed on the machine housing. Wedge block (6) is fixedly installed on the swing arm adjustment assembly (5). The end of wedge block (6) has an inclined surface that matches the inclined working surface. The bottom end of pneumatic support rod (7) is connected to the machine housing, and the top end is connected to the swing arm adjustment assembly (5). The second crushing roller (8) is rotatably installed on the swing arm adjustment assembly (5). The first crushing roller (9) and the third crushing roller (10) are rotatably installed on the machine housing.
2. The trims roll crusher idler gap adjustment structure as claimed in claim 1, wherein: The swing arm adjustment assembly (5) includes a rotating shaft (51), a swing arm (52), and an adjusting rod (53). The rotating shaft (51) is rotatably mounted on the housing, the swing arm (52) is rotatably mounted on the rotating shaft (51), the adjusting rod (53) is installed between the swing arms (52), and the wedge block (6) is fixedly mounted on the adjusting rod (53).
3. The three-roll crusher carrier roller gap adjustment structure according to claim 1 or 2, characterized in that: The tilt angle of the inclined working surface is set to 30°-60°.
4. The three-roll crusher carrier roller gap adjustment structure according to claim 1 or 2, characterized in that: The two reverse threaded sections (11) of the bidirectional screw (1) are of equal length and are symmetrically distributed on both sides of the central axis of the bidirectional screw (1).