CN111979875A - Multi-shaft type positive and negative switching directional vibration wheel - Google Patents

Abstract

The invention discloses a multi-shaft type forward and reverse switching directional vibrating wheel, which comprises a vibrating roller and an excitation cylinder arranged in the vibrating roller, wherein the excitation cylinder and the vibrating roller are coaxially arranged; the main eccentric shaft is arranged in the excitation cylinder, the main eccentric shaft and the excitation cylinder are coaxially arranged, at least three driven eccentric shafts are uniformly distributed in the excitation cylinder around the axis of the main eccentric shaft, and each driven eccentric shaft is arranged in parallel with the main eccentric shaft; the main eccentric shafts drive the main eccentric shafts to rotate through a vibration motor, and the driven eccentric shafts are driven to synchronously and reversely rotate through a transmission mechanism when the main eccentric shafts rotate; the centrifugal force generated when the main eccentric shaft rotates is equal to the sum of the centrifugal forces generated when the driven eccentric shafts rotate. The invention can realize directional vibration in two different directions on the basis of simpler structure by adjusting the initial position of the eccentric shaft and switching the positive rotation and the negative rotation of the vibration motor.

Description

Multi-shaft type positive and negative switching directional vibration wheel

Technical Field

The invention relates to the technical field of vibratory rollers, in particular to a multi-shaft type forward and reverse switching directional vibratory wheel.

Background

The road roller is a construction machine mainly used for increasing the compactness of a working medium (a soil-rock filling and pavement paving mixed material). The earliest rollers were compacted using static force, i.e. the working medium was forced to compact by the static pressure generated by the self weight of the roller, with the development of the technology, it was found that the vibration load was able to put the working medium in a high frequency vibration state, which lost the internal friction between the working medium particles, thus achieving higher compaction efficiency and better compaction effect. Therefore, vibratory rollers are becoming the mainstream.

The vibration wheel is one of key parts of the vibration roller, and is a working device of the vibration roller and a walking device of the vibration roller.

The vibration wheel of a typical vertical vibration road roller consists of a vibration roller, a vibration excitation cylinder, a vibration mechanism arranged in the vibration excitation cylinder and other auxiliary components. However, the existing vibration mechanism has a complex structure and a single vibration function, and can only realize vertical vibration, so that improvement is urgently needed.

Disclosure of Invention

In order to avoid and overcome the technical problems in the prior art, the invention provides a multi-shaft type forward and reverse switching directional vibrating wheel. The vibration exciting cylinder is internally provided with the driving eccentric shaft and at least three driven eccentric shafts along the axial direction of the vibration exciting cylinder, and directional vibration in two different directions can be realized on the basis of simpler structure by adjusting the initial position of the eccentric shafts and switching the positive rotation and the negative rotation of the vibration motor.

In order to achieve the purpose, the invention provides the following technical scheme:

a multi-shaft type forward and reverse switching directional vibrating wheel comprises a vibrating roller and an excitation cylinder arranged in the vibrating roller, wherein the excitation cylinder and the vibrating roller are coaxially arranged; a main eccentric shaft is arranged in the excitation cylinder, the main eccentric shaft and the excitation cylinder are coaxially arranged, at least three driven eccentric shafts are uniformly distributed in the excitation cylinder around the axis of the main eccentric shaft, and each driven eccentric shaft is arranged in parallel with the main eccentric shaft;

the main eccentric shafts drive the main eccentric shafts to rotate through a vibration motor, and the driven eccentric shafts are driven to synchronously and reversely rotate through a transmission mechanism when the main eccentric shafts rotate; the centrifugal force generated when the main eccentric shaft rotates is equal to the sum of the centrifugal forces generated when the driven eccentric shafts rotate.

As a further scheme of the invention: the two sides in the vibration roller are provided with supporting plates for supporting the vibration drum, and the vibration drum is rotatably arranged on the supporting plates through supporting bearings arranged at the outer sides of the two axial ends of the drum body; the cylinder body of the vibration exciting cylinder is formed by splicing a left bearing seat and a right bearing seat, vibration bearings used for supporting the main eccentric shaft and the driven eccentric shaft are arranged on the left bearing seat and the right bearing seat, and the vibration bearings are matched with the positions of the main eccentric shaft and the driven eccentric shaft.

As a still further scheme of the invention: and the left bearing seat and/or the right bearing seat are fixedly connected with the rack through a damping system.

As a still further scheme of the invention: and the supporting plate on the side where the vibrating motor is located is provided with a mounting hole for facilitating the overhaul, replacement and adjustment of each part of the vibrating cylinder, the hole wall of the mounting hole is provided with a sealing bearing seat, and the supporting bearing on the side where the vibrating motor is located is arranged in a bearing cavity of the sealing bearing seat.

As a still further scheme of the invention: the sizes and the materials of the driven eccentric shafts are the same.

As a still further scheme of the invention: the main eccentric shaft comprises a rotating shaft and a movable eccentric block which is rotatably sleeved on the rotating shaft.

As a still further scheme of the invention: by adjusting the rotation angle of the movable eccentric block on the rotation shaft, the vibration motor drives the main eccentric shaft to rotate forward and backward, so that any one of the vertical vibration and horizontal vibration phase switching, the horizontal vibration and any angle oblique vibration phase switching, the vertical vibration and any angle oblique vibration phase switching and the oblique vibration phase switching of two different angles of the vibration wheel can be realized.

As a still further scheme of the invention: the main eccentric shafts and the driven eccentric shafts respectively comprise rotating shafts and movable eccentric blocks which are rotatably sleeved on the rotating shafts.

As a still further scheme of the invention: the shaft body of the rotating shaft is provided with a fixed eccentric block, and in the rotating process of the rotating shaft, the centrifugal forces generated when the fixed eccentric block and the movable eccentric block are overlapped or staggered are unequal in size.

As a still further scheme of the invention: the limiting sliding sleeve is characterized in that a limiting sliding sleeve for limiting the rotation angle of the movable eccentric block is arranged between the movable eccentric block and the rotating shaft, an angle limiting groove is formed in the surface, which is attached to the limiting sliding sleeve, of the movable eccentric block, and a protruding portion matched with the angle limiting groove is convexly arranged on the sleeve body of the limiting sliding sleeve.

As a still further scheme of the invention: by adjusting the rotation angle of the movable eccentric block on the rotation shaft, the vibration motor drives the main eccentric shaft to rotate forward and backward, so that any one of the vertical vibration and horizontal vibration phase switching, the vertical vibration and any angle oblique vibration phase switching, the horizontal vibration and any angle oblique vibration phase switching, the oblique vibration phase switching of two different angles and the large and small vibration phase switching of the same angle of the vibration wheel can be realized.

As a still further scheme of the invention: the transmission structure is a synchronous reverse transmission mechanism, the transmission mechanism comprises a main gear sleeved on a cylindrical section shaft body coaxial with the main eccentric shaft and an auxiliary gear sleeved on a cylindrical section shaft body coaxial with the driven eccentric shaft, and the auxiliary gear is meshed with the main gear.

As a still further scheme of the invention: the number of the corresponding meshed secondary gears of each main gear is not more than two.

As a still further scheme of the invention: an oil cylinder is arranged on the outer side of the excitation cylinder, a sealed bearing seat (14), the oil cylinder (10) and support plates on two sides jointly enclose a closed lubricating oil cavity, and a left oil pouring box and a right oil pouring box are respectively arranged on the inner wall of the oil cylinder along the two ends of the excitation cylinder in the axial direction; the positions of the left oil pouring box and the right oil pouring box correspond to a vibration bearing, a main gear and a pinion in a bearing seat.

Compared with the prior art, the invention has the beneficial effects that:

1. the vibration exciter is characterized in that a main eccentric shaft is arranged in a vibration exciting cylinder, the main eccentric shaft is positioned on the axis of the vibration exciting cylinder, at least three driven eccentric shafts are uniformly arranged around the main eccentric shaft, the three driven eccentric shafts are arranged in parallel with the main eccentric shaft, the main eccentric shaft is driven to rotate by a vibration motor, the driven eccentric shafts are driven to rotate reversely by a transmission mechanism when the main eccentric shaft rotates, and the centrifugal force generated when the main eccentric shaft rotates is equal to the sum of the centrifugal forces generated when each driven eccentric shaft rotates; the invention has simple structure, and can realize directional vibration in two different directions by adjusting the initial position of the eccentric shaft and driving the main eccentric shaft to rotate forward and backward by the vibrating motor.

2. The auxiliary eccentric shafts of the invention have the same size and material, are convenient to replace and manufacture, correspond to each other in the vibration process and have higher reliability.

3. According to the invention, the supporting plate is provided with the mounting hole matched with the diameter of the excitation cylinder, the sealing bearing seat is arranged in the hole, the supporting bearing is arranged in the bearing cavity of the sealing bearing seat, and the sealing bearing seat is detachable, so that the maintenance and replacement work of each part in the excitation cylinder through the mounting hole is convenient to follow-up.

4. The main eccentric shaft is arranged into a combined structure, and the main eccentric shaft is driven by the vibration motor to rotate forward and backward by adjusting the rotation angle of the movable eccentric block on the rotating shaft, so that any one of vertical vibration and horizontal vibration phase switching, horizontal vibration and any angle oblique vibration phase switching, vertical vibration and any angle oblique vibration phase switching and oblique vibration phase switching of two different angles of the vibration wheel can be realized; the rotating angle of the movable eccentric block can be adjusted at will, so that the vibration mode of the vibration cylinder in any direction can be realized.

5. The invention is provided with a plurality of main gears, so that the number of the auxiliary gears corresponding to each gear is not more than two, the meshing surface of the main gear is reduced, the service life of the main gear is prolonged, the reliability of the main gear is improved, and frequent replacement is avoided.

6. The vibration exciting cylinder is fixedly connected with the rack through the damping system, so that the axial vibration between the vibration exciting cylinder and the rack is reduced, and the stability and the reliability in the working process are improved.

7. According to the invention, the main eccentric shaft and the movable eccentric shaft are designed into a combined structure, and the angle limiting groove is arranged, so that when the driving device rotates forwards and backwards, the movable eccentric block and the fixed eccentric block are driven by inertia to coincide with or separate from each other along the projection of the eccentric shaft in the axial direction, thereby realizing the large and small vibration switching under the same angle;

by adjusting the rotation angle of the movable eccentric block on the rotating shaft, the vibration motor drives the main eccentric shaft to rotate forward and backward, so that any one of the vibration switching of vertical vibration and horizontal vibration of the vibration wheel, the switching of vertical vibration and any angle oblique vibration, the switching of horizontal vibration and any angle oblique vibration, the switching of two different angles oblique vibration and the switching of the same angle large and small vibration can be realized; the method specifically comprises the steps of switching between a vertical large vibration phase and a horizontal large vibration phase, switching between a vertical large vibration phase and a horizontal small vibration phase, switching between a vertical small vibration phase and a horizontal small vibration phase, switching between a horizontal large vibration phase and a large oblique vibration phase at any angle, switching between a horizontal large vibration phase and a small oblique vibration phase at any angle, switching between a horizontal small vibration phase and a large oblique vibration phase at any angle, switching between a horizontal small vibration phase and a small oblique vibration phase at any angle, switching between a vertical large vibration phase and a large oblique vibration phase at any angle, switching between a vertical large vibration phase and a small oblique vibration phase at any angle, switching between a vertical small vibration phase and a large oblique vibration phase at any angle, switching between a large oblique vibration phase at any angle and a small oblique vibration phase at any angle, switching between a vertical small vibration phase and a small oblique vibration phase at any angle, switching between a large oblique vibration phase at any angle and a, The small vibration of any angle oblique and the large vibration of another angle oblique are switched, and the small vibration of any angle oblique and the small vibration of another angle oblique are switched.

8. The lubricating oil cavity is arranged in the vibrating roller and is a closed area which is enclosed by the sealing bearing seat, the oil cylinder and the support plates at two sides. In order to facilitate the oil injection into the lubricating oil cavity, an oil injection port can be arranged on the sealed bearing seat, and the oil injection port is closed after lubricating oil is injected to prevent the oil from leaking. The left oil pouring box and the right oil pouring box are respectively arranged at the two ends of the inner wall of the oil cylinder in the axial direction of the excitation cylinder; because the oil pouring box corresponds bearing and drive mechanism setting for the vibration process of exciting a section of thick bamboo can be sustainable lubricated, makes the working process more stable.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2A is a schematic side view of the structure of the exciting cylinder of fig. 1 in which three driven eccentric shafts are provided.

Fig. 2B is a schematic side view of the excitation cylinder of fig. 1 with four driven eccentric shafts disposed therein.

Fig. 2C is a partially enlarged view of the main eccentric shaft of fig. 2A and 2B according to the present invention.

FIG. 2D is a schematic view showing the rotating state of the fixed eccentric block and the movable eccentric block in the same side of the rotating shaft.

FIG. 2E is a schematic view showing the rotation state of the fixed eccentric block and the movable eccentric block at both sides of the rotation axis.

FIGS. 3A and 3B are schematic views showing the rotation state of three driven eccentric shafts when the eccentric shafts are in large forward rotation vibration and small reverse rotation vibration; FIGS. 3C and 3D are schematic views showing the rotation states of the four driven eccentric shafts when the eccentric shafts are in large forward rotation vibration and small reverse rotation vibration; the positive rotation large vibration includes vertical direction positive rotation large vibration, oblique positive rotation large vibration and horizontal direction positive rotation large vibration, and the reverse rotation small vibration includes vertical direction reverse rotation small vibration, oblique reverse rotation small vibration and horizontal direction reverse rotation small vibration.

Fig. 4A is a schematic view of the rotation angle of each eccentric shaft in the process of realizing vertical vibration by the forward rotation of the main eccentric shaft and the synchronous reverse rotation of each driven eccentric shaft when three driven eccentric shafts are arranged.

Fig. 4B is a schematic view of the rotation angle of each eccentric shaft in the process of realizing horizontal vibration by the reverse rotation of the main eccentric shaft and the synchronous forward rotation of each driven eccentric shaft when three driven eccentric shafts are arranged.

Fig. 4C is a schematic view of the rotation angle of each eccentric shaft in the process of realizing vertical vibration by the forward rotation of the main eccentric shaft and the synchronous reverse rotation of each driven eccentric shaft when four driven eccentric shafts are arranged.

Fig. 4D is a schematic view of the rotation angle of each eccentric shaft in the process of realizing horizontal vibration by the reverse rotation of the main eccentric shaft and the synchronous forward rotation of each driven eccentric shaft when four driven eccentric shafts are arranged.

Fig. 5A is a schematic structural view showing the switching of any two directional vibration states when three eccentric shafts are provided.

Fig. 5B is a schematic structural view showing the switching of any two directional vibration states when four eccentric shafts are provided.

In the figure: 1. vibrating the drum; 2. a support bearing; 3. a left oil pouring box; 4. a left bearing seat; 5. a pinion gear; 6. a main gear; 7. a driven eccentric shaft; 8. a main eccentric shaft; 9. a right bearing seat; 10. an oil cylinder; 11. vibrating the bearing; 12. a right oil pouring box; 13. a vibration motor; 14. sealing the bearing seat; 15. fixing the eccentric block; 16. a rotating shaft; 17. a limiting sliding sleeve; 18. a flat bond; 19. an angle limiting groove; 20. a movable eccentric block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a multi-shaft forward and backward switching directional vibration wheel includes a vibration drum 1 and an excitation drum disposed in the vibration drum 1, the excitation drum and the vibration drum 1 are disposed coaxially; a main eccentric shaft 8 and at least three driven eccentric shafts 7 are arranged in the excitation cylinder, each driven eccentric shaft 7 is uniformly arranged around the axis of the main eccentric shaft 8, the driven eccentric shafts 7 are all arranged in parallel with the main eccentric shaft 8, and specific embodiments are given as follows:

1. as shown in fig. 2A, the number of the driven eccentric shafts 7 is three, and when viewed in cross section, the axis connecting line of each driven eccentric shaft 7 is an equilateral triangle, and the axis of the main eccentric shaft 8 is located on the center of the equilateral triangle.

2. As shown in fig. 2B, the number of the driven eccentric shafts is four, the connecting line of the axes of the adjacent driven eccentric shafts is square when viewed from the cross section, and the axis of the main eccentric shaft 8 is located at the center of the square.

The main eccentric shaft 8 is driven to rotate by a vibration motor 13, wherein the vibration motor 13 is only a better choice, and other driving sources can be used for driving the main eccentric shaft 8 to rotate; when the main eccentric shafts 8 rotate, the driven eccentric shafts 7 are driven by the transmission mechanism to synchronously rotate in opposite directions; the centrifugal force generated when the main eccentric shaft 8 rotates is equal to the sum of the centrifugal forces generated when the driven eccentric shafts 7 rotate.

In the invention, only the preferred specific embodiment when the number of the driven eccentric shafts 7 is 3 or 4 is given, in the actual production process, the number of the driven eccentric shafts 7 is not particularly limited, five or six, and the like can be obtained, and only the following conditions are required: the driven eccentric shafts 7 are uniformly arranged around the axis of the main eccentric shaft 8, the driven eccentric shafts 7 are all arranged in parallel to the main eccentric shaft 8, and the centrifugal force generated when the main eccentric shaft 8 rotates when the driven eccentric shafts 7 and the main eccentric shaft 8 synchronously and reversely rotate is equal to the sum of the centrifugal forces generated when the driven eccentric shafts 7 rotate.

For convenient production and manufacture, the driven eccentric shaft is usually the same in size and material, which is beneficial to improving the stability and reliability of the vibration process.

As shown in fig. 1, two sides of the interior of a vibration drum 1 are provided with supporting plates for supporting an excitation drum, and the excitation drum is rotatably mounted on the supporting plates through supporting bearings 2 arranged at the outer sides of two axial ends of a drum body; the excitation cylinder body is formed by splicing a left bearing seat 4 and a right bearing seat 9, vibration bearings 11 used for supporting a main eccentric shaft 8 and a driven eccentric shaft 7 are arranged on the left bearing seat 4 and the right bearing seat 9, and the vibration bearings 11 are matched with the main eccentric shaft 8 and the driven eccentric shaft 7 in position.

The whole excitation cylinder is preferably of a split type cylindrical structure, specifically, a left bearing seat 4 and a right bearing seat 9 are spliced to form a cylinder, and the splicing point of the left bearing seat 4 and the right bearing seat 9 is not limited; the left bearing seat 4 and the right bearing seat 9 are provided with cylindrical placing ends which extend in a suspending way along the two axial ends of the cylinder body, the excitation cylinder is correspondingly and rotatably arranged on the supporting bearings 2 at the two sides through the placing ends at the two ends, and the vibration motor 13 is arranged at one of the placing ends. The interior of the vibration cylinder is a cylindrical cavity, and two ends of the cylindrical cavity are used for mounting vibration bearings.

The left bearing block 4 and/or the right bearing block 9 are fixedly connected with the frame through a damping system, wherein rubber damping is generally adopted.

In order to facilitate the maintenance, replacement and debugging of each part in the vibration excitation cylinder, mounting holes convenient for maintenance, replacement and adjustment of each part of the vibration excitation cylinder are preferably formed in the supporting plate on the side of the vibration motor 13, the diameter of each mounting hole is generally identical to that of the vibration excitation cylinder, a sealing bearing seat 14 is mounted on the hole wall of each mounting hole, and the supporting bearing 2 on the side of the vibration motor 13 is mounted in a bearing cavity of each sealing bearing seat 14.

As shown in fig. 1, the transmission structure is a synchronous reverse transmission mechanism, preferably a gear transmission; the transmission mechanism comprises a main gear 6 sleeved on a cylindrical section shaft body coaxial with the main eccentric shaft 8 and an auxiliary gear 5 sleeved on a cylindrical section shaft body coaxial with the driven eccentric shaft 7, synchronous reverse rotation of the main gear 6 and the auxiliary gear 5 is realized through meshing of the auxiliary gear 5 and the main gear 6, and the main gear and the auxiliary gear are usually the same in size; in addition, the position of the transmission mechanism is not limited, and the transmission mechanism can be arranged at any position along the length direction of the eccentric shaft.

In a conventional arrangement, three or four secondary gears 5 are driven by a main gear 6, and in order to reduce the wear of the main gear, the number of the secondary gears 5 engaged with each main gear 6 is not more than two, and preferred embodiments of the transmission mechanism are given below:

1: as shown in fig. 2A, when the number of the sub-gears 5 is 3, two main gears 6 are provided, and the positions on the main eccentric shaft 8 are not limited, wherein one main gear 6 is meshed with one sub-gear 5, and the other main gear 6 is meshed with two sub-gears 5.

Similarly, when the number of the driven eccentric shafts 7 is odd, such as 5, 7, 9, etc., the number of the pinions 5 is correspondingly increased, so that every two pinions 5 are correspondingly meshed with one main gear 6, the extra pinions 5 are separately meshed with one main gear 6, and the positions of the main gears 6 are not limited and are staggered respectively.

2: as shown in fig. 2B, when the number of the sub-gears is 4, two main gears 6 are provided, the position on the main eccentric shaft 8 is not limited, each main gear 6 is meshed with two sub-gears 5, and the sub-gear 5 meshed with each main gear 6 may be an adjacent sub-gear 5 or two sub-gears symmetrically provided with respect to the main gear 6.

Similarly, when the number of the driven eccentric shafts 7 is an even number such as 6, 8, 10, etc., the number of the pinions 5 is correspondingly increased, so that every two pinions 5 are correspondingly meshed with one main gear 6, and the positions of the main gears 6 are not limited and are staggered respectively.

For the convenience of lubricating the gears, the positions of the main gear 6 are preferably arranged at the left side and the right side of the main eccentric shaft 8, correspond to the positions of the oil pouring boxes, and can be freely adjusted in the actual working process.

As shown in fig. 1, an oil cylinder 10 is arranged outside the excitation cylinder, a sealed bearing seat 14, the oil cylinder 10 and support plates at two sides together enclose a closed lubricating oil cavity, and a left oil pouring box 3 and a right oil pouring box 12 are respectively arranged at two ends of the inner wall of the oil cylinder 10 in the axial direction of the excitation cylinder; the left oil pouring box 3 and the right oil pouring box 12 correspond to the main gear 6, the pinion 5 and the vibration bearing in the bearing seat.

The vibration process of the present invention is described in detail below: (the arrow in the figure indicates the centrifugal force direction)

Example 1: the main eccentric shaft 8 is of a combined type and comprises a rotating shaft 16 and a movable eccentric block 20 which is rotatably sleeved on the rotating shaft 16, and the driven eccentric shaft 7 is of an integrated structure;

referring to fig. 4A, there is illustrated a schematic view of a state where three driven eccentric shafts 7 are provided, and the eccentric shafts are rotated to different angles in the vertical vibration process; firstly, each eccentric shaft is in a static initial state, the movable eccentric block 20 is not adjusted, the vibration motor 13 drives the main eccentric shaft 8 to rotate forwards, and when the rotation angle is 0 degree, the centrifugal force direction of each eccentric shaft faces downwards, so that the vibration roller 1 is driven to compact the road surface downwards; after rotating for 45 degrees, because the centrifugal force is inclined to the ground, the component force along the vertical direction points to the ground, but the downward pressure is smaller than the initial 0 degree, and the resultant force in the horizontal direction is 0 after balance; when the rotation angle reaches 90 degrees, no resultant force in the vertical direction exists, the centrifugal force directions of the main eccentric shaft 8 and the driven eccentric shaft 7 in the horizontal direction are opposite, and the resultant force is 0; when the eccentric shafts rotate to 135 degrees, the component force of each eccentric shaft along the vertical direction is upward, the resultant force in the horizontal direction is 0 after balance, and the resultant force direction of the centrifugal force is upward; when the rotation angle reaches 180 degrees, the centrifugal force direction is upward, no component force in the horizontal direction exists, the centrifugal force direction is upward, and the resultant force reaches the maximum; when the vibration is rotated to 360 degrees from 180 degrees, the centrifugal force is changed from the direction upward resultant force to the direction downward resultant force, so that a complete vertical vibration period is realized; similarly, the vibration motor 13 drives the main eccentric shaft 8 to rotate reversely to realize the process.

As shown in fig. 4B, a schematic view of a state where three eccentric shafts 7 are provided, and the eccentric shafts are rotated to different angles in the process of realizing horizontal vibration; firstly, all the eccentric shafts are in a static initial state, the movable eccentric block 20 is adjusted to rotate 180 degrees compared with the static initial state, the vibration motor 13 drives the main eccentric shaft 8 to start to rotate reversely, when the rotation angle is 0 degree, resultant force in the horizontal direction does not exist at the moment, the centrifugal force directions of the main eccentric shaft 8 and the driven eccentric shaft 7 in the vertical direction are opposite, and the resultant force is 0; when the rotation angle is 45 degrees, because the centrifugal force of each eccentric shaft inclines to the ground, the resultant force in the vertical direction is 0 after being balanced, the resultant force in the horizontal direction points to the right after being balanced, and the resultant force of the centrifugal force is right at the moment; when the rotation angle is 90 degrees, the centrifugal force in the vertical direction is avoided, the resultant force direction in the horizontal direction is rightward, and the resultant force reaches the maximum; when the rotation angle is 135 degrees, the resultant force in the vertical direction is 0 after being balanced, and the resultant force in the horizontal direction points to the right; when the rotation angle is 180 degrees, no resultant force in the horizontal direction exists, the centrifugal force directions of the main eccentric shaft 8 and the driven eccentric shaft 7 in the vertical direction are opposite, and the resultant force is 0; when the vibration is rotated to 360 degrees from 180 degrees, the resultant force direction of the centrifugal force is changed from 0 to the left, the resultant force is maximum, and finally the resultant force is reduced to 0, so that a complete horizontal vibration period is realized; similarly, the vibration motor 13 drives the main eccentric shaft 8 to rotate reversely to realize the process.

As shown in fig. 4C and 4D, the schematic diagram of the state when the eccentric shafts are rotated to different angles in the vertical and horizontal vibration process when four driven eccentric shafts are provided is shown, the principle is the same as that of fig. 4A and 4B, and the details are not repeated below.

Similarly, as shown in fig. 5A and 5B, when the eccentric mass is initially adjusted, the eccentric mass is adjusted to an inclination angle, and the vibration motor 13 drives the main eccentric shaft 8 to rotate forward and backward, so that the resultant force direction of the centrifugal force in the rotation process is inclined to the ground, and the eccentric mass forms reciprocating vibration in the inclination direction.

In summary, by adjusting the rotation angle of the movable eccentric block 20 on the rotation shaft 16, the vibration motor 13 drives the main eccentric shaft 8 to rotate forward and backward, so as to realize any one of the switching between the vertical vibration and the horizontal vibration, the switching between the horizontal vibration and the oblique vibration at any angle, the switching between the vertical vibration and the oblique vibration at any angle, and the switching between the oblique vibration at two different angles of the vibrating wheel shown in fig. 5A and 5B.

Example 2: in order to further optimize the embodiment 1 and realize more and better vibration states, the main eccentric shaft 8 and the driven eccentric shaft are both set to be combined, so that the movable eccentric block 20 can rotate by a set angle, the fixed eccentric block 15 can be conveniently disassembled and replaced to be different in size, and the vibration state of the vibration exciter is more diversified and flexible under the combination.

Specifically, the main eccentric shaft 8 and each driven eccentric shaft 7 respectively comprise a rotating shaft 16 and a movable eccentric block 20 which is rotatably sleeved on the rotating shaft 16, and a fixed eccentric block 15 is arranged on the shaft body of the rotating shaft 16. A limiting sliding sleeve 17 for limiting the rotation angle of the movable eccentric block 20 is arranged between the movable eccentric block 20 and the rotation shaft 16, an angle limiting groove 19 is arranged on the surface of the movable eccentric block 20, which is attached to the limiting sliding sleeve 17, and a boss matched with the angle limiting groove 19 is convexly arranged on the sleeve body of the limiting sliding sleeve 17. The limit sliding sleeve 17 is connected with the rotating shaft 16 through a flat key 18.

In order to realize different vibration states, the movable eccentric block 20 and the fixed eccentric block 15 are generally set to be different in size, the shape of the angle limiting groove 19 can be freely selected, an arc-shaped groove with 180 degrees is shown in the figure, and the following states are realized when the movable eccentric block and the fixed eccentric block rotate forwards and backwards:

when the rotating shaft 16 rotates forward, the movable eccentric mass 20 is formed into a semicircular shape as shown in fig. 2D by the fact that the inertia thereof is overlapped with the surface of the fixed eccentric mass 15, and the centrifugal force is maximized.

When the rotating shaft 16 rotates reversely, the movable eccentric mass 20 is offset from the fixed eccentric mass 15 by inertia, and when the two are completely offset as shown in fig. 2E, the centrifugal force is minimized.

In the vertical direction positive rotation large vibration shown in fig. 3A and 3C, the fixed eccentric mass and the movable eccentric mass of the three or four eccentric shafts are all vibrated downwards to realize the maximum vibration effect; in the small vertical reversal vibration shown in fig. 3B and 3D, the fixed eccentric masses of the three or four eccentric shafts all vibrate downward, while the movable eccentric masses all lift upward, and the two masses are superposed to realize the minimum vibration effect. In the large oblique forward rotation vibration shown in fig. 3A and 3C, the fixed eccentric mass and the movable eccentric mass of the three or four eccentric shafts are overlapped together and all vibrate downwards, so that the maximum vibration effect under the oblique angle is realized; in the small obliquely inverted vibration shown in fig. 3B, 3D, the fixed eccentric mass and the movable eccentric mass of the three or four eccentric shafts are all separated from each other, and the minimum vibration effect at this same oblique angle is achieved. In the horizontal direction positive rotation large vibration shown in fig. 3A and 3C, the fixed eccentric blocks and the movable eccentric blocks of the three or four eccentric shafts are all overlapped together, so that the maximum vibration effect in the horizontal direction is realized; in the horizontal direction reversal small vibration shown in fig. 3B, 3D, the fixed eccentric masses of the three or four eccentric shafts are all separated from each other, achieving the minimum vibration effect in the horizontal direction.

In summary, by adjusting the rotation angle of the movable eccentric block 20 on the rotation shaft 16, the vibration motor 13 drives the main eccentric shaft 8 to rotate forward and backward, so as to switch between the vertical vibration and the horizontal vibration of the vibration wheel, switch between the vertical vibration and the oblique vibration at any angle, switch between the horizontal vibration and the oblique vibration at any angle, switch between the oblique vibration at two different angles, and switch between the large vibration and the small vibration at the same angle, specifically, the following switching modes are provided: switching between a vertical large vibration phase and a horizontal large vibration phase, switching between a vertical large vibration phase and a horizontal small vibration phase, switching between a vertical small vibration phase and a horizontal large vibration phase, switching between a horizontal large vibration phase and a large inclined vibration phase at any angle, switching between a horizontal large vibration phase and a small inclined vibration phase at any angle, switching between a horizontal small vibration phase and a large inclined vibration phase at any angle, switching between a horizontal small vibration phase and a small inclined vibration phase at any angle, switching between a vertical large vibration phase and a large inclined vibration phase at any angle, switching between a vertical large vibration phase and a small inclined vibration phase at any angle, switching between a vertical small vibration phase and a large inclined vibration phase at any angle, switching between a large inclined vibration phase at any angle and a small inclined, The small vibration of any angle oblique and the large vibration of another angle oblique are switched, and the small vibration of any angle oblique and the small vibration of another angle oblique are switched.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (14)

1. A multi-shaft forward and reverse switching directional vibrating wheel is characterized by comprising a vibrating roller (1) and a vibrating cylinder arranged in the vibrating roller (1), wherein the vibrating cylinder and the vibrating roller (1) are coaxially arranged; a main eccentric shaft (8) is arranged in the excitation cylinder, the main eccentric shaft (8) and the excitation cylinder are coaxially arranged, at least three driven eccentric shafts (7) are uniformly distributed in the excitation cylinder around the axis of the main eccentric shaft (8), and each driven eccentric shaft (7) is arranged in parallel with the main eccentric shaft (8);

the main eccentric shafts (8) are driven to rotate by a vibration motor (13), and when the main eccentric shafts (8) rotate, the driven eccentric shafts (7) are driven to synchronously rotate in opposite directions by a transmission mechanism; the centrifugal force generated when the main eccentric shaft (8) rotates is equal to the sum of the centrifugal forces generated when the driven eccentric shafts (7) rotate.

2. The multi-shaft forward-backward switching directional vibrating wheel according to claim 1, wherein supporting plates for supporting the vibration drum are arranged on two sides inside the vibrating drum (1), and the vibration drum is rotatably mounted on the supporting plates through supporting bearings (2) arranged outside two axial ends of the drum body; the excitation cylinder body is formed by splicing a left bearing seat (4) and a right bearing seat (9), vibration bearings (11) used for supporting the main eccentric shaft (8) and the driven eccentric shaft (7) are arranged on the left bearing seat (4) and the right bearing seat (9), and the vibration bearings (11) are matched with the main eccentric shaft (8) and the driven eccentric shaft (7) in position.

3. Multiaxial positive and negative switching directional vibratory wheel according to claim 2 where the left bearing block (4) and/or the right bearing block (9) is/are fixedly connected to the frame by a damping system.

4. The multi-shaft forward-backward switching directional vibrating wheel as claimed in claim 2, wherein a supporting plate at the side of the vibrating motor (13) is provided with a mounting hole for facilitating maintenance, replacement and adjustment of parts of the vibrating cylinder, a sealing bearing seat (14) is mounted on the hole wall of the mounting hole, and the supporting bearing (2) at the side of the vibrating motor (13) is mounted in a bearing cavity of the sealing bearing seat (14).

5. Multiaxial positive and negative switching directional vibratory wheel according to claim 1 where the driven eccentric shafts (7) are of the same size and material.

6. A multi-shaft forward-backward switching directional vibrating wheel according to any of claims 1-5, wherein the main eccentric shaft (8) comprises a rotating shaft (16) and a movable eccentric block (20) rotatably sleeved on the rotating shaft (16).

7. A multi-axle forward-backward switching directional vibrating wheel according to claim 6, wherein by adjusting the rotation angle of the movable eccentric mass (20) on the rotation axle (16), the main eccentric axle (8) is driven by the vibrating motor (13) to rotate forward and backward, so as to realize any one of the switching between vertical vibration and horizontal vibration, the switching between horizontal vibration and any angle oblique vibration, the switching between vertical vibration and any angle oblique vibration, and the switching between two different angles oblique vibration.

8. A multi-shaft forward-backward switching directional vibrating wheel according to any of claims 1-5, wherein the main eccentric shaft (8) and each driven eccentric shaft (7) comprise a rotating shaft (16) and a movable eccentric block (20) rotatably sleeved on the rotating shaft (16).

9. The multi-axial forward-backward switching directional vibrating wheel according to claim 8, wherein the rotating shaft (16) is provided with a fixed eccentric block (15) on the shaft body, and the centrifugal forces generated when the fixed eccentric block (15) and the movable eccentric block (20) are overlapped or staggered are not equal in magnitude during the forward-backward rotation of the rotating shaft (16).

10. The multi-shaft forward and reverse switching directional vibrating wheel according to claim 9, wherein a limiting sliding sleeve (17) for limiting the rotation angle of the movable eccentric block (20) is arranged between the movable eccentric block (20) and the rotating shaft (16), an angle limiting groove (19) is formed in the surface of the movable eccentric block (20) and the surface of the limiting sliding sleeve (17) which are attached to each other, and a protruding portion matched with the angle limiting groove (19) is convexly arranged on the sleeve body of the limiting sliding sleeve (17).

11. The multi-shaft forward-backward switching directional vibrating wheel according to claim 10, wherein by adjusting the rotation angle of the movable eccentric mass (20) on the rotation shaft (16), the main eccentric shaft (8) is driven by the vibrating motor (13) to rotate forward and backward, so that any one of the vertical vibration and horizontal vibration phase switching, vertical vibration and any angle oblique vibration phase switching, horizontal vibration and any angle oblique vibration phase switching, two different angle oblique vibration phase switching, and same angle large and small vibration phase switching of the vibrating wheel can be realized.

12. A multi-shaft forward-backward switching directional vibrating wheel according to any one of claims 1 to 5, wherein the transmission structure is a synchronous reverse transmission mechanism, the transmission mechanism comprises a main gear (6) sleeved on a shaft body of a cylindrical section coaxial with the main eccentric shaft (8) and a secondary gear (5) sleeved on a shaft body of a cylindrical section coaxial with the driven eccentric shaft (7), and the secondary gear (5) is meshed with the main gear (6).

13. Multiaxial positive-negative switching orientation vibratory wheel according to claim 12 where there are no more than two counter gears (5) engaged with each primary gear (6).

14. The multi-shaft forward-backward switching directional vibrating wheel as claimed in claim 12, wherein an oil cylinder (10) is arranged outside the vibrating cylinder, a sealed bearing seat (14), the oil cylinder (10) and supporting plates at two sides jointly enclose a closed lubricating oil cavity, and a left oil pouring box (3) and a right oil pouring box (12) are respectively arranged at two ends of the inner wall of the oil cylinder (10) in the axial direction of the vibrating cylinder; the positions of the left oil pouring box (3) and the right oil pouring box (12) correspond to the vibration bearings in the main gear (6), the pinion (5) and the bearing seat.

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