Rubber crusher roller distance adjusting device with variable center distance

Abstract

The invention discloses a center-distance-variable rubber crusher roller distance adjusting device which comprises a left rack, a right rack, a front roller and a rear roller, a power gear is installed on a left side shaft of the rear roller, a differential gear 1 is installed on a right side shaft of the rear roller, a differential gear 4 is installed on a right side shaft of the front roller, a gear supporting shaft is arranged on the right rack, and a gear shaft is arranged on the gear supporting shaft. A differential gear 2 is arranged on the gear supporting shaft and meshed with the differential gear 1, two connecting rods are arranged on the two sides of the differential gear 4 and connected with a front roller shaft and a sliding gear shaft, a differential gear 3 is installed on the sliding gear shaft, and the differential gear 3 is meshed with the differential gear 2 and the differential gear 4 at the same time to form a differential gear set capable of being automatically adjusted. Compared with a traditional distance adjusting device, the four differential gears are adopted for combined transmission, the two differential gears installed on the rollers are not directly meshed, and the other two differential gears form a differential gear set to transmit power. In the differential gear set, a sliding gear shaft where differential gears 3 are located can slide in the direction of a sliding groove in the machine frame, and when the distance between rollers is adjusted to produce rubber powder of different sizes, the sliding gear shaft can automatically adjust the position so as to ensure that meshing of each pair of differential gears is located at the optimal position.

Description

Technical Field

[0001] The invention relates to the technical field of tire rubber breaking processing, and in particular to a rubber breaking machine roller distance adjusting device with a variable center distance. Background Art

[0002] Rubber crushers are mainly used in the waste tire recycling industry. After recycling, waste tires are first cut into block-shaped films, and then these block-shaped films are put into the rubber crusher to be processed into rubber powder. Rubber powder can be used to make products such as pipes, gaskets and adhesives. Since the sizes of rubber powder particles required for different occasions are different, rubber crushers are needed to produce rubber powders of different sizes. The crushing principle of the rubber crusher is that the two rollers rotate in opposite directions, so that the rubber blocks in the gap between the rollers are sheared and squeezed and crushed. The larger the gap between the two rollers that squeeze each other, the smaller the shear stress on the rubber blocks, and the larger the rubber powder particles produced. The smaller the roller gap, the greater the shear stress on the rubber blocks, and the smaller the rubber powder particles produced. Therefore, rubber powder particles of different sizes can be produced by changing the roller spacing.

[0003] At present, the power arrangement of most rubber crushers is to install a gear on each side of the active roller, one side is the power gear, the other side is the differential gear, and one side of the driven roller is installed with a differential gear, which meshes with the differential gear on the active roller. The power transmission method of the rubber crusher is: the motor rotates the power gear, driving the active roller and the differential gear on the active roller to rotate, and the differential gear on the active roller transmits the power to the differential gear on the driven roller, and then the driven roller rotates. However, under this transmission method, when adjusting the roller spacing, the center distance of the two differential gears will change, and the degree of gear meshing will change, which will cause serious wear of the differential gear and shorten its life. Summary of the invention

[0004] The purpose of the present invention is to provide a rubber crusher roller distance adjustment device with a variable center distance in view of the shortcomings of the existing rubber crusher distance adjustment device. When adjusting the roller distance, the differential gear set installed on the roller shaft can be automatically adjusted so that the differential gear set is always in the optimal meshing state, reducing the wear of the differential gear and increasing the life of the gear. At the same time, the rubber crusher distance adjustment device disclosed in the present invention can realize the processing of materials of different sizes by adjusting the distance between the two rollers, reducing the number of material cycles during the processing process, and improving the material crushing efficiency.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned invention purpose is: a rubber crusher roller distance adjustment device with variable center distance, comprising a left frame, a right frame, a front roller and a rear roller arranged on the frame, characterized in that: spherical roller bearings are arranged at both ends of the front roller, and the spherical roller bearings at both ends of the front roller are respectively installed on two sliding bearing seats, spherical roller bearings are also arranged at both ends of the rear roller, and the spherical roller bearings at both ends of the rear roller are respectively installed on two fixed bearing seats, the two sliding bearing seats are respectively movably installed on the left frame and the right frame, the two fixed bearing seats are respectively fixedly installed on the left frame and the right frame, the left frame and the right frame are both provided with guide rails, and the lower end surface of the sliding bearing seat is provided with a groove matching the guide rail.

[0006] A power gear is installed on the left shaft of the rear roller, a differential gear 1 is installed on the right shaft, a differential gear 4 is installed on the right shaft of the front roller, a gear support shaft is provided on the right frame, a differential gear 2 is provided on the gear support shaft, the differential gear 2 is meshed with the differential gear 1, two connecting rods are provided on both sides of the differential gear 4, large holes and small holes are provided on the two connecting rods, a tapered roller bearing 1 is installed in the large hole, the tapered roller bearing 1 is installed on the right shaft of the front roller, a sliding gear shaft is installed in the small hole, a differential gear 3 is installed on the sliding gear shaft, and the differential gear 3 is meshed with the differential gear 2 and the differential gear 4 at the same time.

[0007] Preferably, a worm gear box chamber is provided on the left side of the left frame and the right frame, a worm wheel and a worm are contained in the worm gear box chamber, the worm wheel is mounted on a trapezoidal lead screw, and there is a thrust ball bearing on each side of the worm wheel, the thrust ball bearing on the right side cooperates with the inner surface of the worm gear box chamber, and the thrust ball bearing on the left side cooperates with the inner surface of the box cover, a digital position display is provided on the outside of the box cover, and the digital position display is installed on the trapezoidal lead screw, the worm is located below the worm wheel and cooperates with the worm wheel, two tapered roller bearings are provided at both ends of the worm, and the two tapered roller bearings are mounted on the inner surface of the worm gear box chamber, and a handwheel is installed on the worm.

[0008] Preferably, the trapezoidal lead screw is spirally matched with a trapezoidal nut, and the trapezoidal nut is mounted on a sliding bearing seat.

[0009] Preferably, a slide groove is provided on the right frame, and one end of the sliding gear shaft is located in the slide groove, so that the sliding gear shaft can only move along the direction of the slide groove.

[0010] Preferably, the number of teeth and module of the differential gear 1, differential gear 2 and differential gear 3 are the same, and the speed ratio of differential gear 3 to differential gear 4 is 1.65.

[0011] Preferably, two double-row tapered roller bearings are installed in the holes of the differential gear 2 and the differential gear 3, the differential gear 2 is installed on the gear support shaft through the two double-row tapered roller bearings, and there is a shaft elastic retaining ring on the support shaft, and the differential gear 3 is installed on the sliding gear shaft through the two double-row tapered roller bearings, and the gear support shaft and the sliding gear shaft do not rotate.

[0012] Preferably, there is a sleeve 1 between the tapered roller bearing 1 and the differential gear 4, and there is a sleeve 2 between the double-row tapered roller bearing and the connecting rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The device uses four differential gears to carry out combined transmission of power. The two differential gears installed on the rollers are not directly meshed, and the power is transmitted through the differential gear set composed of the other two differential gears. In the differential gear set, the shaft where one of the differential gears is located can slide in the direction of the slide groove on the frame. When the roller spacing is adjusted to produce rubber powder of different sizes, the differential gear shaft can automatically adjust the position to ensure that the meshing of each pair of differential gears is in the best position. (2) On the basis of the traditional tire crushing machine, a spacing adjustment device is added to realize the integrated processing of materials of different diameters, which changes the problem of multiple circulation processing of particles of different sizes of materials in the traditional processing process and improves the efficiency of tire crushing. (3) A worm gear transmission device is added to the device to control the adjustment range of the gap between the pressure rollers. Considering that the worm gear transmission can achieve a large transmission ratio, the worm gear transmission device is used to achieve a large range of movement of the gap between the two pressure rollers by adjusting the handle in a small range, thereby improving the transmission efficiency between the pressure rollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 It is a schematic diagram of the distance adjustment structure of the present invention.

[0016] Figure 3 It is a schematic diagram of the installation of the differential gear set of the present invention.

[0017] Figure 4 It is a schematic diagram of the connecting rod structure of the present invention.

[0018] Figure 5 It is a schematic diagram of the right frame structure of the present invention.

[0019] Figure 6 It is a schematic diagram of the structure of the sliding bearing seat of the present invention.

[0020] Description of the reference numerals: 1. left frame; 2. right frame; 3. front roller; 4. rear roller; 5. spherical roller bearing; 6. sliding bearing seat; 7. fixed bearing seat; 8. guide rail; 9. groove; 10. power gear; 11. differential gear 1; 12. differential gear 4; 13. gear support shaft; 14. differential gear 2; 15. connecting rod; 16. large hole; 17. small hole; 18. tapered roller bearing 1; 1 9. Sliding gear shaft; 20. Differential gear three; 21. Worm gear housing; 22. Worm wheel; 23. Worm; 24. Trapezoidal lead screw; 25. Thrust ball bearing; 26. Housing cover; 27. Digital position indicator; 28. Tapered roller bearing two; 29. ​​Handwheel; 30. Trapezoidal nut; 31. Slideway; 32. Elastic retaining ring for shaft; 33. Double-row tapered roller bearing; 34. Sleeve one; 35. Sleeve two. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it is necessary to understand that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] See also Figures 1 to 6As shown, a roller distance adjustment device for a rubber crusher with a variable center distance comprises a left frame 1, a right frame 2, a front roller 3 and a rear roller 4 arranged on the frames, spherical roller bearings 5 ​​are arranged at both ends of the front roller 3, and the spherical roller bearings 5 ​​at both ends of the front roller 3 are respectively mounted on two sliding bearing seats 6, spherical roller bearings 5 ​​are also arranged at both ends of the rear roller 4, and the spherical roller bearings 5 ​​at both ends of the rear roller 4 are respectively mounted on two fixed bearing seats 7, the two sliding bearing seats 6 are respectively movably mounted on the left frame 1 and the right frame 2, the two fixed bearing seats 7 are respectively fixedly mounted on the left frame 1 and the right frame 2, the left frame 1 and the right frame 2 are both provided with guide rails 8, the lower end surface of the sliding bearing seat 6 is provided with a groove 9 matching the guide rail 8, and a power gear is installed on the left shaft of the rear roller 4 Wheel 10, a differential gear 11 is installed on the right side shaft, a differential gear 4 12 is installed on the right side shaft of the front roller, a gear support shaft 13 is provided on the right frame 2, a differential gear 2 14 is provided on the gear support shaft 13, the differential gear 2 14 is meshed with the differential gear 11, and there are two connecting rods 15 on both sides of the differential gear 4 12, a large hole 16 and a small hole 17 are provided on the connecting rod 15, a tapered roller bearing 18 is installed in the large hole, the tapered roller bearing 18 is installed on the right side shaft of the front roller 3, the inner ring of the tapered roller bearing 18 rotates with the front roller, the connecting rod 15 is installed on the outer ring, a sliding gear shaft 19 is installed in the small hole, a differential gear 3 20 is installed on the sliding gear shaft 19, and the differential gear 3 20 is meshed with the differential gear 2 14 and the differential gear 4 12 at the same time.

[0025] The left side of the left frame 1 and the right frame 2 are both provided with a worm gear box chamber 21, and the worm gear box chamber 21 contains a worm wheel 22 and a worm 23. The worm wheel 22 is installed on the trapezoidal lead screw 24. There is a thrust ball bearing 25 on each side of the worm wheel 22, and the thrust ball bearing 25 is installed on the shoulder of the trapezoidal lead screw 24. The thrust ball bearing 25 on the right side cooperates with the inner surface of the worm gear box chamber 21, and the thrust ball bearing 25 on the left side cooperates with the inner surface of the box cover 26. The thrust ball bearing fixes the position of the worm wheel 22 in the worm gear box chamber 21 and stably meshes with the worm 23. A digital position display 27 is provided on the outside of the box cover 26. The digital position indicator 27 is installed at the outermost end of the trapezoidal screw 24. The digital position indicator can display the axial movement distance of the trapezoidal nut 30 according to the number of turns of the trapezoidal screw 24, that is, the distance moved by the roller spacing adjustment. The worm 23 is located below the worm wheel 22 and meshes with the worm wheel 22. Tapered roller bearings 28 are provided at both ends of the worm 22. The inner surface of the worm gear box chamber 21 is processed with a groove for installing the tapered roller bearings. The tapered roller bearings 28 are installed in the groove on the inner surface of the worm gear box chamber 21 to fix the worm 23. One end of the worm protrudes out of the worm gear box chamber 21, and a handwheel 29 is installed on the protruding part.

[0026] The trapezoidal lead screw 24 passes through the hole on the frame and is screwed with the trapezoidal nut 30. The trapezoidal nut 30 is fixedly mounted on the sliding bearing seat 6. When the trapezoidal lead screw 24 rotates, the trapezoidal nut 30 moves linearly along the trapezoidal lead screw, and at the same time moves along the guide rail 8 on the frame with the sliding bearing seat 6, thereby realizing the function of roller distance adjustment.

[0027] The right frame 2 is provided with a slide groove 31, and the shape of the slide groove is the shape of the intersection of a circle with a point on the axis of the gear support shaft 13 as the center and the right frame 2, and the radius of the circle is the center distance of the meshing of the differential gear 2 14 and the differential gear 3 20. One end of the sliding gear shaft 19 is located in the slide groove 31, so that the sliding gear shaft 19 can only move along the direction of the slide groove 31, and the differential gear 3 20 located on the sliding gear shaft 19 is always in meshing with the differential gear 2 14.

[0028] The center distance between the large hole 16 and the small hole 17 of the connecting rod 15 is the center distance of the meshing differential gear three 20 and the differential gear four 12. When the connecting rod 15 is installed on the shaft of the front roller 3 and the sliding gear shaft 19, the differential gear four 12 on the shaft of the front roller 3 and the differential gear three 20 on the sliding gear shaft 19 are always in a meshing state. When the front roller 3 moves, the connecting rod 15 moves with the sliding gear shaft.

[0029] The differential gear 1 11, the differential gear 2 14 and the differential gear 3 20 have the same number of teeth and module. The speed ratio of the differential gear 3 20 to the differential gear 4 12 is 1.65. The total speed ratio of the entire differential gear set is 1.65, so that the front roller 3 and the rear roller 4 produce different linear speeds.

[0030] Two double-row tapered roller bearings 33 are installed in the holes of the differential gear 2 14 and the differential gear 3 27. The differential gear 2 14 is installed on the gear support shaft 13 through the two double-row tapered roller bearings 33. The outermost side of the support shaft 13 has an elastic retaining ring 32 for fixing the bearings so as not to move along the axial direction. The differential gear 3 27 is installed on the sliding gear shaft 19 through two double-row tapered roller bearings 33. The two sides of the sliding gear shaft 19 are also fixed with elastic retaining rings 32 for fixing the bearings so as to prevent the bearings from moving along the axial direction. The gear support shaft 13 and the sliding gear shaft 19 do not rotate.

[0031] There is a sleeve 34 between the tapered roller bearing 18 and the differential gear 4 12, and there is a sleeve 2 35 between the double-row tapered roller bearing 33 and the connecting rod 15. The function of the sleeve is to create a gap between the differential gear and the connecting rod to prevent friction between the rotating differential gear and the stationary connecting rod.

[0032] The working principle of this embodiment is as follows: when adjusting the pitch, the hand wheel 29 is shaken to drive the worm 23 to rotate, and the worm wheel 22 matched with the worm also rotates. The worm wheel is installed on the trapezoidal lead screw 24. When the worm wheel rotates, it drives the trapezoidal lead screw 24 to rotate. Since a thrust ball bearing 25 is installed on the shoulder of the trapezoidal lead screw 24, the position of the trapezoidal lead screw in the worm gear chamber 21 is fixed and cannot move axially. The trapezoidal nut 30 spirally matched with the trapezoidal lead screw 24 will move horizontally along the axial direction under the rotation of the trapezoidal lead screw. A digital position display 27 is installed on the outermost end of the trapezoidal lead screw, which can display the distance moved by the trapezoidal nut 30 according to the number of turns of the trapezoidal lead screw. The trapezoidal nut 30 is fixedly mounted on the sliding bearing seat 6. The lower surface of the sliding bearing seat has a groove 9, which cooperates with the guide rail 8 on the frame to enable the sliding bearing seat 6 to move on the frame. When the trapezoidal nut 30 moves horizontally, it moves the sliding bearing seat 6 relative to the frame, and the front roller 3 set on the sliding bearing seat also moves relative to the frame, completing the change of the roller spacing. At the same time, the differential gear set is also adjusted accordingly. When the front roller 3 moves horizontally, the differential gear four 12 installed on the front roller shaft will also move, and the connecting rod 15 installed on the front roller shaft will move with the sliding gear shaft 19, and the differential gear three 20 on the sliding gear shaft will move accordingly. Because the distance between the centers of the two holes on the connecting rod 15 is the center distance between the differential gear three 20 and the differential gear four 12, the differential gear three and the differential gear four are always in the best meshing state. Because one end of the sliding gear shaft 19 is located in the slide groove 31 of the right frame 2, the sliding gear shaft 19 can only move along the trajectory of the slide groove 31, and the slide groove 31 makes the differential gear three 20 and the differential gear two 14 in the best meshing state. The differential gear two 14 is installed on the gear support shaft 13 of the right frame 2 and meshes with the differential gear one 11 installed on the rear roller 4. Therefore, when the front roller 3 moves, the entire differential gear set is automatically adjusted to make each pair of differential gears in the best meshing state.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and deformations of these embodiments without departing from the operating principle and spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. A roller distance adjustment device for a rubber crusher with a variable center distance, comprising a left frame (1), a right frame (2), a front roller (3) and a rear roller (4) arranged on the frames, characterized in that: The front roller (3) is provided with spherical roller bearings (5) at both ends, and the spherical roller bearings (5) at both ends of the front roller (3) are respectively mounted on two sliding bearing seats (6); the rear roller (4) is also provided with spherical roller bearings (5) at both ends, and the spherical roller bearings (5) at both ends of the rear roller (4) are respectively mounted on two fixed bearing seats (7); the two sliding bearing seats (6) are respectively movably mounted on the left frame (1) and the right frame (2); the two fixed bearing seats (7) are respectively fixedly mounted on the left frame (1) and the right frame (2); the left frame (1) and the right frame (2) are both provided with guide rails (8); and the lower end surface of the sliding bearing seat (6) is provided with a groove (9) matching the guide rail (8); A power gear (10) is installed on the left shaft of the rear roller (4), a differential gear one (11) is installed on the right shaft, a differential gear four (12) is installed on the right shaft of the front roller, a gear support shaft (13) is provided on the right frame (2), a differential gear two (14) is provided on the gear support shaft (13), the differential gear two (14) is meshed with the differential gear one (11), two connecting rods (15) are provided on both sides of the differential gear four (12), large holes (16) and small holes (17) are provided on the two connecting rods (15), a tapered roller bearing one (18) is installed in the large hole, the tapered roller bearing one (18) is installed on the right shaft of the front roller (3), a sliding gear shaft (19) is installed in the small hole, a differential gear three (20) is installed on the sliding gear shaft (19), and the differential gear three (20) is meshed with the differential gear two (14) and the differential gear four (12) at the same time.

2. The roller distance adjustment device of a rubber crusher with a variable center distance according to claim 1 is characterized in that: The left side of the left frame (1) and the right frame (2) are both provided with a worm gear box chamber (21), the worm gear box chamber (21) contains a worm wheel (22) and a worm (23), the worm wheel (22) is mounted on a trapezoidal lead screw (24), and a thrust ball bearing (25) is provided on each side of the worm wheel (22), the thrust ball bearing (25) on the right side cooperates with the inner surface of the worm gear box chamber (21), and the thrust ball bearing (25) on the left side cooperates with the inner surface of the box cover (26). The outer side of the box cover (26) is provided with a digital position display (27), and the digital position display (27) is mounted on the trapezoidal screw (24). The worm (23) is located below the worm wheel (22) and cooperates with the worm wheel (22). Two tapered roller bearings (28) are provided at both ends of the worm (22), and the two tapered roller bearings (28) are mounted on the inner surface of the worm wheel box chamber (21). A hand wheel (29) is mounted on the worm (22).

3. The roller distance adjustment device of a rubber crusher with a variable center distance according to claim 2 is characterized in that: The trapezoidal lead screw (24) is screw-matched with the trapezoidal nut (30), and the trapezoidal nut (30) is mounted on the sliding bearing seat (6).

4. The roller distance adjustment device of a rubber crusher with a variable center distance according to claim 1 is characterized in that: The right frame (2) is provided with a slide groove (31), and one end of the sliding gear shaft (19) is located in the slide groove (31), so that the sliding gear shaft (19) can only move along the direction of the slide groove (31).

5. The roller distance adjustment device of a rubber crusher with a variable center distance according to claim 1 is characterized in that: The differential gear 1 (11), the differential gear 2 (14) and the differential gear 3 (20) have the same number of teeth and module, and the speed ratio of the differential gear 3 (20) to the differential gear 4 (12) is 1.

65.

6. The roller distance adjustment device of a rubber crusher with a variable center distance according to claim 1 is characterized in that: Two double-row tapered roller bearings (33) are installed in the holes of the differential gear 2 (14) and the differential gear 3 (27); the differential gear 2 (14) is installed on the gear support shaft (13) through the two double-row tapered roller bearings (33); the support shaft (13) is provided with a shaft elastic retaining ring (32); the differential gear 3 (27) is installed on the sliding gear shaft (19) through the two double-row tapered roller bearings (33); the gear support shaft (13) and the sliding gear shaft (19) do not rotate.

7. The roller distance adjustment device of a rubber crusher with a variable center distance according to claim 1 is characterized in that: A sleeve 1 (34) is provided between the tapered roller bearing 1 (18) and the differential gear 4 (12), and a sleeve 2 (35) is provided between the double-row tapered roller bearing (33) and the connecting rod (15).

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