Displacement synchronizing structure of movable roller end bearing seat of a pair of rollers

Abstract

The utility model relates to the technical field of roll mill, concretely relates to a movable roll two end bearing seat displacement synchronous structure of roll mill, it includes: base, opposite both sides of base are equipped with the sliding slot respectively, each sliding slot is equipped with the sliding block respectively, two sliding blocks are equipped with the shaft hole of relative penetration, two ends of movable roll are through bearing and the shaft hole cooperation respectively, big drive shaft, big drive shaft passes through bearing seat and is arranged at one side of movable roll, and two ends of big drive shaft are connected with the curved arm perpendicular respectively, and the free end of curved arm is hinged with the connecting rod between corresponding sliding block, drive element, drive element sets up in the end of base, and is connected with big drive shaft through transmission mechanism. The utility model solves the problem that the movable roll bearing seat of roll mill is not synchronous displacement through mechanical linkage structure, to prolong the service life of bearing.

Description

Technical Field

[0001] This utility model relates to the field of roller mill technology, specifically to a synchronous structure for the displacement of bearing seats at both ends of the movable roller of a roller mill. Background Technology

[0002] To prevent material jamming, the movable roller of the double roller mill initially used springs to press the bearing housing. Later, a hydraulic cylinder-accumulator was used to provide back pressure and constrain the position of the movable roller. In application, because the front and rear forces of the movable roller act independently, the front and rear bearing housings move backward and forward asynchronously, resulting in a shortened bearing life. On average, the bearings need to be replaced every two months. Utility Model Content

[0003] This invention provides a synchronous structure for the displacement of bearing seats at both ends of the movable roller of a roller mill. By using a mechanical linkage structure, it solves the problem of asynchronous displacement of the bearing seats of the movable roller of the roller mill, thereby extending the service life of the bearings.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a synchronous structure for shifting bearing seats at both ends of a roller mill, comprising: a base, wherein sliding grooves are provided on opposite sides of the base, and a slider is fitted in each of the sliding grooves; two sliders are provided with through-hole shafts, and both ends of the roller are fitted with the shaft holes via bearings; a large drive shaft, wherein the large drive shaft is disposed on one side of the roller via bearing seats, and both ends of the large drive shaft are vertically connected to curved arms, the free ends of the curved arms being hinged to the corresponding sliders via connecting rods; and a drive element, wherein the drive element is disposed at the end of the base and connected to the large drive shaft via a transmission mechanism.

[0005] Preferably, the driving element includes a small drive shaft, which is mounted on the top of the base via a bearing seat, and the small drive shaft has a small pulley and a large arm. The large drive shaft has a large pulley corresponding to the small pulley, and the small pulley and the large pulley are driven by a belt. It also includes a hydraulic cylinder, which is hinged to the end of the base, and the telescopic end of the hydraulic cylinder is hinged to the free end of the large arm.

[0006] Preferably, the diameter of the large pulley is twice that of the small pulley.

[0007] Preferably, the length of the upper arm is twice the length of the curved arm.

[0008] Preferably, there are multiple hydraulic cylinders, and each small drive shaft is provided with a large arm corresponding to each hydraulic cylinder.

[0009] The beneficial effects of this utility model are as follows: This technical solution solves the problem of asynchronous displacement of the movable roller bearing seat in a roller mill through a mechanical linkage structure. It employs a single large drive shaft running through both sides, with both ends connected to sliders via crank arms and connecting rods. When one end of the movable roller is overloaded, it pulls the movable slider on that side backward. Under the transmission of the crank arm and connecting rod on that side, the large drive shaft rotates, absorbing and storing kinetic energy using the drive element. Simultaneously, the large drive shaft also drives the crank arm and connecting rod on the other side, forcing the sliders on both sides to move synchronously. Since the crank arms on both sides are fixed on the same large drive shaft, their rotation angles are completely synchronized, ensuring consistent slider displacement and keeping the axes of the movable and fixed rollers parallel, significantly reducing bearing wear due to eccentric load. When the load on the movable roller decreases, the drive element releases kinetic energy and resets the rotation angle of the large drive shaft. Under the action of the crank arms and connecting rods at both ends, the two sliders move forward synchronously, causing the movable roller to slide towards the fixed roller. Therefore, throughout the entire movement process, abnormal wear of the movable roller bearing due to eccentric operation is avoided, thus extending bearing life. The hydraulic cylinder acts as an accumulator, storing and releasing energy. When the load on the movable roller increases, the large drive shaft is driven by the slider, connecting rod, and crank arm, causing the large pulley to rotate the small pulley. Under the action of the small drive shaft, the large arm changes angle, thus transferring kinetic energy to the hydraulic cylinder. When the load on the movable roller decreases, the hydraulic cylinder releases kinetic energy, and through the action of the large arm, small drive shaft, driving pulley, driven pulley, large drive shaft, crank arm, connecting rod, and slider, the movable roller is reset. The transmission ratio between the small and large pulleys, and the lever arm design of the large and crank arms, amplify the force, achieving the technical effect of a small hydraulic cylinder providing a large thrust. Furthermore, to meet even greater thrust, multiple hydraulic cylinders can be configured, with parallel operation further increasing the working thrust of the movable roller, making it suitable for handling hard or large materials and reducing the risk of material jamming. Attached Figure Description

[0010] 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.

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a partial structural cross-sectional view of the present invention.

[0013] In the diagram: 1. Base; 2. Slide groove; 3. Movable roller; 4. Fixed roller; 5. Large drive shaft; 6. Crank arm; 7. Connecting rod; 8. Small drive shaft; 9. Small pulley; 10. Large arm; 11. Large pulley; 12. Hydraulic cylinder; 13. Slider. Detailed Implementation

[0014] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] according to Figure 1 , Figure 2 As shown, a synchronous structure for the displacement of bearing seats at both ends of a roller mill includes: a base 1, with grooves 2 on opposite sides of the base 1, each groove 2 housing a slider 13, and two sliders 13 having through-holes. Both ends of the roller 3 are fitted with the through-holes via bearings; a large drive shaft 5, which is mounted on one side of the roller 3 via bearing seats, and both ends of the large drive shaft 5 are vertically connected to crank arms 6, with connecting rods 7 hinged between the free ends of the crank arms 6 and the corresponding sliders 13; and a drive element, which is located at the end of the base 1 and connected to the large drive shaft 5 via a transmission mechanism.

[0016] This technical solution solves the problem of asynchronous displacement of the bearing housing of the movable roller 3 in a roller mill by means of a mechanical linkage structure. It adopts a single large drive shaft 5 running through both sides, with the two ends connected to the sliders 13 on both sides by a mechanism of crank arms 6 and connecting rods 7. When one end of the movable roller 3 is overloaded, it pulls the movable slider 13 on that side backward, and under the transmission of the crank arm 6 and connecting rod 7 on that side, the large drive shaft 5 rotates and uses the drive element to absorb and store kinetic energy. At the same time, the large drive shaft 5 also drives the crank arm 6 and connecting rod 7 on the other side to move, forcing the sliders 13 on both sides to move synchronously. Since the crank arms 6 on both sides are fixed on the same large drive shaft 5, their rotation angles are completely synchronized, thereby ensuring the consistency of the displacement of the sliders 13 and keeping the axes of the movable roller 3 and the fixed roller 4 in a parallel state, which significantly reduces the wear of the bearings due to uneven load. When the load on the movable roller 3 is reduced, the drive element releases kinetic energy and resets the rotation angle of the large drive shaft 5. Under the action of the crank arms 6 and connecting rod 7 at both ends, the two sliders 13 move forward synchronously, causing the movable roller 3 to slide towards the fixed roller 4. Therefore, during the entire movement process, abnormal wear of the bearings of the movable roller 3 due to eccentric operation is avoided, thereby extending the bearing life.

[0017] The driving element includes a small drive shaft 8, which is mounted on the top of the base 1 via a bearing seat. The small drive shaft 8 is provided with a small pulley 9 and a large arm 10. The large drive shaft 5 is provided with a large pulley 11 corresponding to the small pulley 9. The small pulley 9 and the large pulley 11 are driven by a belt. The driving element also includes a hydraulic cylinder 12, which is hinged to the end of the base 1. The telescopic end of the hydraulic cylinder 12 is hinged to the free end of the large arm 10.

[0018] In the above configuration, the hydraulic cylinder 12 acts as an accumulator to store and release energy. When the load on the movable roller 3 increases, the large drive shaft 5 is driven by the slider 13, connecting rod 7, and crank arm 6, causing the large pulley 11 to drive the small pulley 9 to rotate. Under the action of the small drive shaft 8, the large arm 10 is driven to change angle, thereby transferring kinetic energy to the hydraulic cylinder 12. When the load on the movable roller 3 decreases, the hydraulic cylinder 12 releases kinetic energy, and through the action of the large arm 10, small drive shaft 8, driving pulley, driven pulley, large drive shaft 5, crank arm 6, connecting rod 7, and slider 13, the movable roller 3 is reset.

[0019] The diameter of the large pulley 11 is twice that of the small pulley 9, the length of the large arm 10 is twice that of the curved arm 6, there are multiple hydraulic cylinders 12, and the small drive shaft 8 is provided with a large arm 10 for each hydraulic cylinder 12.

[0020] Through the transmission ratio of the small pulley 9 and the large pulley 11, as well as the lever arm design of the large arm 10 and the curved arm 6, the force is amplified, which satisfies the technical effect of providing a large thrust for the small hydraulic cylinder 12. In order to meet the greater thrust, multiple hydraulic cylinders 12 can be set up and work in parallel, which further improves the working thrust of the movable roller 3, making it suitable for handling hard or large materials and reducing the risk of material jamming.

[0021] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A synchronous structure for the displacement of bearing seats at both ends of the movable roller of a roller mill, characterized in that, include: The base (1) has grooves (2) on opposite sides, and sliders (13) are fitted in each groove (2). The two sliders (13) have through shaft holes. The two ends of the movable roller (3) are fitted with the shaft holes through bearings. A large drive shaft (5) is provided on one side of the movable roller (3) via a bearing seat, and two ends of the large drive shaft (5) are respectively vertically connected to a crank arm (6). The free end of the crank arm (6) is hinged to the corresponding slider (13) with a connecting rod (7). A drive element is disposed at the end of the base (1) and connected to the large drive shaft (5) via a transmission mechanism.

2. The synchronous displacement structure of the bearing seats at both ends of the movable roller of a roller mill according to claim 1, characterized in that: The driving element includes a small drive shaft (8), which is mounted on the top of the base (1) via a bearing seat. The small drive shaft (8) is provided with a small pulley (9) and a large arm (10). The large drive shaft (5) is provided with a large pulley (11) corresponding to the small pulley (9). The small pulley (9) and the large pulley (11) are driven by a belt. The driving element also includes a hydraulic cylinder (12), which is hinged to the end of the base (1). The extension end of the hydraulic cylinder (12) is hinged to the free end of the large arm (10).

3. The synchronous displacement structure of the bearing seats at both ends of the movable roller of a roller mill according to claim 2, characterized in that: The diameter of the large pulley (11) is twice that of the small pulley (9).

4. The synchronous displacement structure of the bearing seats at both ends of the movable roller of a roller mill according to claim 3, characterized in that: The length of the upper arm (10) is twice the length of the curved arm (6).

5. The synchronous displacement structure of the bearing seats at both ends of the movable roller of a roller mill according to claim 4, characterized in that: There are multiple hydraulic cylinders (12), and the small drive shaft (8) is provided with a large arm (10) for each hydraulic cylinder (12).

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