Dual eccentric vibrator in a same direction overlapping arrangement and method of assembling the same

Abstract

The application discloses a double eccentric vibrator arranged in a same direction and overlapping each other, which comprises a shell and a motor arranged on the shell, a driving shaft and a driven shaft parallel to the driving shaft are arranged in the shell, the driving shaft is connected with the motor, the driving shaft is arranged vertically, the driven shaft is arranged vertically and is located obliquely below the driving shaft, a driving gear is arranged on the lower end of the driving shaft, a driven gear meshing with the driving gear is arranged on the upper end of the driven shaft, eccentric blocks are arranged on the driving shaft and the driven shaft respectively, the two eccentric blocks are arranged in a same direction and overlapping each other in upper and lower layers, and the central angle of the eccentric blocks is adjustable. The application can effectively improve the vibration force, reduce the horizontal size of the vibrator, alternately form the vibration force and the force couple of the two eccentric blocks, improve the vibration effect, effectively improve the picking effect and picking rate of the picking machine on the basis of avoiding the great increase of the size of the vibrator, improve the picking adaptability of the vibrator, and meet the picking demands of different fruit trees. The application also provides an assembling method of the double eccentric vibrator arranged in a same direction and overlapping each other.

Description

Technical Field

[0001] This invention relates to a double eccentric vibrator arranged in the same direction and its assembly method, belonging to the field of vibration harvesting technology. Background Technology

[0002] Orchard harvesting is characterized by high labor intensity and strong seasonality. Using mechanical harvesters can significantly improve harvesting efficiency. Vibratory fruit harvesters generally include a traveling mechanism, a vibrating clamping mechanism for picking the fruit, a collection umbrella for receiving the shaken-down fruit, and a fruit output mechanism for removing the fruit from the collection umbrella. They offer strong clamping adaptability and high reliability in vibration harvesting, meeting the needs of shake-down harvesting for fruit trees in different terrains. The vibrator in the clamping mechanism generates vibration through the rotation of an eccentric shaft. However, existing vibrator designs are cumbersome, with fixed amplitudes. Using the same amplitude for different fruit varieties fails to adapt to the harvesting needs of various fruit trees. The vibration force and effect of the equipment are insufficient, affecting the mechanical harvesting rate and resulting in poor harvesting quality. This often leaves some fruit remaining after mechanical vibration harvesting, requiring secondary vibration harvesting or manual harvesting. However, secondary vibration harvesting causes significant damage to the fruit trees, while manual harvesting is inefficient. Therefore, to increase the harvesting rate, the vibration force of the vibrator must be increased. To obtain a greater vibration force, an eccentric block with a larger eccentric radius is generally used. However, increasing the size of the eccentric block leads to an increase in the overall size of the vibrator, which is not conducive to the arrangement of the vibrator on the harvester. Moreover, the eccentric block is a key component for generating vibration, and deviations in the assembly angle of the eccentric block will lead to unstable vibration effects. To achieve the desired assembly accuracy of the eccentric block and reduce the deviation in the assembly angle, multiple adjustments are required, which is time-consuming and labor-intensive. Summary of the Invention

[0003] The double eccentric vibrator with overlapping eccentricities arranged in the same direction provided by this invention can not only effectively increase the vibration force, but also reduce the horizontal size of the vibrator. The alternating vibration force and torque of the two eccentric blocks improve the vibration effect. While avoiding a significant increase in the size of the vibrator, it effectively improves the harvesting effect and harvesting rate of the harvester, enhances the harvesting adaptability of the vibrator, and meets the harvesting needs of different fruit trees. This invention also provides an assembly method for the double eccentric vibrator with overlapping eccentricities arranged in the same direction.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A double eccentric vibrator with overlapping eccentricities in the same direction includes a housing and a motor mounted on the housing. The housing contains a drive shaft and a driven shaft parallel to the drive shaft. The drive shaft is connected to the motor. The drive shaft is arranged vertically, and the driven shaft is arranged parallel to the drive shaft at an angle below it. A drive gear is mounted at the lower end of the drive shaft, and a driven gear meshing with the drive gear is mounted at the upper end of the driven shaft. Eccentric blocks are mounted on the drive shaft and the driven shaft, respectively. The two eccentric blocks are arranged in the same direction and partially overlap each other. The central angle of the eccentric blocks is adjustable.

[0005] Preferably, a straight keyway is formed on the inner circle of the driving gear, driven gear, and eccentric block. Both the driving shaft and the driven shaft have mating keys that cooperate with the straight keyway. The straight keyway of the driving gear is radially aligned with the tooth groove of the driving gear, and the straight keyway of the driven gear is radially aligned with the tooth tip of the driven gear. In the initial installation state, the straight keyway of the driving gear, the tooth groove of the driving gear meshing with the driven gear, the top tooth of the driven gear meshing with the driving gear, and the straight keyway of the driven gear are aligned in sequence.

[0006] Preferably, the upper cover plate of the housing has an oil filling hole, the lower cover plate has an oil drain hole, and the eccentric block has a vertical alignment hole. The oil filling hole is coaxially aligned with the alignment hole on the eccentric block of the drive shaft, and the oil drain hole is coaxially aligned with the alignment hole on the eccentric block of the driven shaft.

[0007] Preferably, the eccentric block includes an assembly cylinder mounted on the drive shaft or driven shaft, a middle sector plate integrally formed with the assembly cylinder, an upper sector plate sleeved on the assembly cylinder, and a lower sector plate sleeved on the assembly cylinder. The upper, middle, and lower sector plates have the same sector radius and central angle. The upper, middle, and lower sector plates are connected by bolts. The positions of the upper and lower sector plates are adjusted circumferentially to adjust the central angle of the eccentric block.

[0008] Preferably, the middle fan-shaped plate has five through holes evenly spaced along the circumference, with the middle through hole aligned with the center of the assembly cylinder. The upper and lower fan-shaped plates each have a connecting hole corresponding to the through hole, with the middle through hole forming an alignment hole or being aligned and connected with the connecting hole to form an alignment hole.

[0009] Preferably, the central angle of the middle fan-shaped plate is 70 degrees, the central interval angle between adjacent through holes is 12.5 degrees, and the interval angle between the side through holes and the edge of the middle fan-shaped plate is equal.

[0010] The assembly method of the double eccentric vibrators arranged in the same direction and overlapping as described above is characterized by including the following steps: The first step is to adjust the central angle of the eccentric block according to the vibration requirements; The second step is to assemble the eccentric block and driven gear onto the driven shaft, assemble the eccentric block and driving gear onto the driven shaft, assemble the driving shaft and driven shaft into the housing respectively to form the meshing of the driving gear and driven gear, and then install the motor onto the housing and connect it to the driving shaft.

[0011] The preferred second step specifically refers to, First: Connect the eccentric block and driven gear to the key of the driven shaft, and assemble the eccentric block and driven gear onto the driven shaft. Then connect the eccentric block and driving gear to the key of the driving shaft, and assemble the eccentric block and driving gear onto the driving shaft. Next, the drive shaft and driven shaft are assembled onto the housing respectively. The tooth tips on the drive gear that are aligned with the slotted keyway and the tooth grooves on the driven gear that are aligned with the slotted keyway are meshed together, forming the slotted keyway of the drive gear, the tooth grooves of the drive gear meshing with the driven gear, the top teeth of the driven gear meshing with the drive gear, and the slotted keyway of the driven gear in the initial installation state are aligned in sequence. Next, a long bolt inserted from top to bottom is passed through the oil filling hole and extended into the alignment hole of the eccentric block on the drive shaft, and a long bolt inserted from bottom to top is passed through the oil drain hole and extended into the alignment hole of the eccentric block on the driven shaft to position the two eccentric blocks. Then, mount the motor onto the housing and connect it to the drive shaft. Remove the two long bolts and install the corresponding plugs on the oil filler hole and oil drain hole, respectively.

[0012] Preferably, the first step specifically refers to rotating the lower and upper sector plates by the same angle to both sides of the middle sector plate to adjust the central angle of the eccentric block.

[0013] The preferred method for adjusting the central angle of the eccentric block is as follows: The upper and lower sector plates are rotated 12.5 degrees to both sides of the middle sector plate, and then bolts are used to fix the upper, middle and lower sector plates together to form an eccentric block with a central angle of 95 degrees. The upper and lower sector plates are rotated 25 degrees to both sides of the middle sector plate, and then bolts are used to fix the upper, middle and lower sector plates together to form an eccentric block with a central angle of 120 degrees. The upper and lower sector plates are rotated 37.5 degrees to both sides of the middle sector plate, and then bolts are used to fix the upper, middle and lower sector plates together to form an eccentric block with a central angle of 145 degrees. The upper and lower sector plates are rotated 50 degrees to both sides of the middle sector plate, and then bolts are used to fix the upper, middle and lower sector plates together to form an eccentric block with a central angle of 170 degrees.

[0014] The beneficial effects of the invention are: The present invention relates to a double eccentric vibrator with overlapping eccentric blocks arranged in the same direction. The drive shaft is vertically positioned, and the driven shaft is parallel to it and slightly below it, resulting in two eccentric blocks arranged in an upper and lower layer. The two eccentric blocks are aligned in the same direction and partially overlap. A motor drives the drive shaft to rotate, and the meshing of the drive and driven gears causes the drive and driven shafts to rotate in opposite directions. This causes the two eccentric blocks to rotate in opposite directions. Every 180-degree rotation, the two eccentric blocks become aligned in the same direction and partially overlap, allowing their vibrations along the line connecting the centers of the drive and driven shafts to combine into a single vibration. This effectively combines the vibrational forces of the two vertically distributed eccentric blocks into a single vibrational force, which not only effectively... The vibration force is increased to improve the vibration effect. The double eccentric blocks are arranged in an overlapping upper and lower layer, which can effectively reduce the center distance between the drive shaft and the driven shaft, thereby reducing the horizontal size of the vibrator. The two eccentric blocks are distributed in upper and lower layers, so that the forces generated by the two eccentric blocks when they rotate are not on the same horizontal plane. When the upper and lower eccentric blocks rotate to the opposite position, the forces generated by the two eccentric blocks combine into a pair of force couples. The combined vibration force and force couple of the two eccentric blocks change periodically and the phase angles differ by 90 degrees. The alternation of the vibration force and force couple of the two eccentric blocks improves the vibration effect. It effectively improves the harvesting effect and harvesting rate of the harvester without significantly increasing the size of the vibrator.

[0015] The central angle of the eccentric block is adjustable, which can be used to adjust the vibration force of the eccentric block. This allows the vibrator to be assembled according to different harvesting needs, thereby improving the harvesting rate and enhancing the harvesting adaptability of the vibrator to meet the harvesting needs of different fruit trees. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the double eccentric vibrator with overlapping and unidirectional arrangement according to the present invention.

[0017] Figure 2 This diagram illustrates the changing states of the combined vibration force of the two eccentric blocks in the same direction and the force couple formed in opposite directions during the rotation of the driving gear.

[0018] Figure 3 This is a schematic diagram showing the meshing of the driving gear and the driven gear in the initial installation state.

[0019] Figure 4 This is a side view of the eccentric block when the upper, middle, and lower layer sector blocks overlap.

[0020] Figure 5 This is a front view of the eccentric block when the upper, middle, and lower sector blocks overlap.

[0021] Figure 6 This is a front view of the eccentric block when the central angles are 95, 120, 145, and 170 degrees.

[0022] Figure 7This is a schematic diagram of an eccentric block in the prior art. Detailed Implementation

[0023] The following is combined with Figures 1-7 The embodiments of the present invention will be described in detail below.

[0024] A double eccentric vibrator with overlapping eccentricities arranged in the same direction includes a housing 1 and a motor 2 mounted on the housing. The housing 1 contains a drive shaft 3 and a driven shaft 4 parallel to the drive shaft 3. The drive shaft 3 is connected to the motor 2. The drive shaft 3 is arranged vertically, and the driven shaft 4 is arranged parallel to the drive shaft 3 at an angle below it. The lower end of the drive shaft 3 is equipped with a drive gear 5, and the upper end of the driven shaft 4 is equipped with a driven gear 6 that meshes with the drive gear 5. Eccentric blocks 7 are respectively mounted on the drive shaft 3 and the driven shaft 4. The two eccentric blocks 7 are arranged in the same direction and partially overlap each other. The central angle of the eccentric blocks 7 is adjustable.

[0025] The aforementioned co-directional overlapping double eccentric vibrator has a vertically aligned drive shaft 3 and a parallel drive shaft 4 positioned diagonally below the drive shaft 3, causing the two eccentric blocks 7 to be distributed in upper and lower layers. The two eccentric blocks 7 are co-directional and partially overlap. The motor 2 drives the drive shaft 3 to rotate, and the meshing of the drive gear 5 and driven gear 6 causes the drive shaft 3 and driven shaft 4 to rotate in opposite directions, thus causing the two co-directional eccentric blocks 7 to rotate in opposite directions. Every 180 degrees of rotation, the two eccentric blocks form a co-directional, partially overlapping structure, causing the vibrations of the two eccentric blocks 7 to combine along the line connecting the centers of the drive shaft and driven shaft. Vibration, equivalent to combining the vibration forces of two vertically distributed eccentric blocks into a single vibration force, not only effectively increases the vibration force to improve the vibration effect, but also, the overlapping arrangement of the two eccentric blocks effectively reduces the center distance between the driving shaft 3 and the driven shaft 4, thereby reducing the horizontal dimensions of the vibrator. The vertical distribution of the two eccentric blocks 7 ensures that the forces generated by their rotation are not on the same horizontal plane. When the two eccentric blocks rotate to opposite directions, the forces generated by the two eccentric blocks combine into a couple, causing the combined vibration force and couple of the two eccentric blocks to exhibit periodic changes with a phase angle difference of 90 degrees. Figure 2 As shown in the figure, Figure a shows the two eccentric blocks initially set in the same direction; Figure b shows the two eccentric blocks rotating 90 degrees in opposite directions and forming a force couple in opposite directions; Figure c shows the two eccentric blocks rotating 180 degrees in opposite directions and combining the vibration force in the same direction; and Figure d shows the two eccentric blocks rotating 270 degrees in opposite directions and forming a force couple in opposite directions. The alternating formation of the vibration force and force couple of the two eccentric blocks improves the vibration effect and effectively improves the harvesting effect and harvesting rate of the harvester without significantly increasing the size of the vibrator.

[0026] During the rotation of the eccentric block, the magnitude of the centripetal force directly affects its vibrational force on the vibration system. The centripetal force is provided by the rotation of the eccentric block, and its magnitude is proportional to the mass of the eccentric block, the eccentricity, and the square of the rotational angular velocity. The specific formula is as follows: Where m is the mass of the eccentric block, e is the eccentricity, and ω is the angular velocity. According to the calculation and analysis of the eccentricity and vibration force of several commonly used eccentric blocks recorded in *Mining Machinery*, 1999.6, the formula for calculating the eccentricity of the eccentric block is disclosed as follows: .

[0027] Among them, such as Figure 7 As shown, α is the central angle of the eccentric block (half of the central angle of the eccentric block), R is the sector radius of the eccentric block, r is the outer radius of the ring, and r0 is the inner radius of the ring. The formula shows that when the sector radius, outer radius, and inner radius of the ring are constant, the eccentricity e is related to the central angle α, which is half of the central angle of the eccentric block. Therefore, changing the central angle of the eccentric block changes its centripetal force, thus altering the vibration force. The vibration force of the eccentric block can be adjusted by regulating its central angle, allowing the vibrator to be assembled according to different harvesting needs, improving the harvesting rate, and thus enhancing the vibrator's adaptability to meet the harvesting requirements of different fruit trees.

[0028] In this configuration, the inner circles of the driving gear 5, driven gear 6, and eccentric block 7 are all provided with a straight keyway A. The driving shaft 3 and driven shaft 4 are both provided with mating keys B that cooperate with the straight keyway A. The straight keyway A of the driving gear 5 is radially aligned with the tooth groove of the driving gear 5, and the straight keyway A of the driven gear 6 is radially aligned with the tooth tip of the driven gear 6. In the initial installation state, the straight keyway A of the driving gear 5, the tooth groove of the driving gear 5 meshing with the driven gear 6, the top tooth of the driven gear 6 meshing with the driving gear 5, and the straight keyway A of the driven gear are sequentially aligned. The engagement of the straight keyway A and the mating key B allows the gear and eccentric block to rotate synchronously with the shaft. To ensure that the two eccentric blocks 7 are arranged in the same direction in the initial installation state and to prevent a phase angle difference from forming between the two vertically distributed eccentric blocks, the straight keyway A of the driving gear 5 is aligned with the tooth tip, and the straight keyway A of the driven gear 6 is aligned with the tooth groove. The straight keyway A meshes with the tooth tip and tooth groove aligned with the straight keyway A, thus forming a... Figure 3The diagram shows the initial installation state, with the keyway A of the driving gear 5, the meshing tooth groove of the driving gear 5 and the driven gear 6, the top tooth of the driven gear 6 meshing with the driving gear 5, and the keyway A of the driven gear aligned sequentially. This ensures precise alignment of the driving and driven gears during installation, allowing the two eccentric blocks 7 to maintain a stable relative position during rotation. This avoids uneven vibration or equipment damage caused by positional deviations, making gear installation simpler and more intuitive. During assembly, simply ensuring the correct relative position of the keyway with the tooth tip and tooth groove is sufficient to quickly form the engagement between the driving gear 5 and the driven gear 6. This not only improves assembly efficiency but also reduces the risk of equipment failure due to improper assembly. The precise positional relationship between the keyway A and the tooth tip and tooth groove ensures a tighter and more stable meshing between the driving and driven gears, thereby improving transmission efficiency and ensuring that the equipment can fully utilize the input power during operation, thus enhancing transmission efficiency.

[0029] The upper cover plate 8 of the housing 1 has an oil filling hole 81, the lower cover plate 9 has an oil drain hole 91, the eccentric block 7 has a vertical alignment hole C, the oil filling hole 81 is coaxially aligned with the alignment hole C on the eccentric block 7 of the drive shaft 3, and the oil drain hole 91 is coaxially aligned with the alignment hole C on the eccentric block 7 of the driven shaft 4. By aligning the keyway A in the drive gear 5 and driven gear 6 with the tooth tip and tooth groove, it can be ensured that the two eccentric blocks are set in the same direction after the drive gear 5 and driven gear 6 are meshed in place. However, during the connection between the motor 2 and the drive shaft 3, the drive shaft 3 may rotate, causing a phase angle difference between the two eccentric blocks 7, preventing them from maintaining the same direction. To prevent the rotation of the drive shaft 3 during motor connection and to ensure the correct initial installation position of the eccentric blocks in the housing, an alignment hole C is opened on the eccentric block 7. During installation, a long bolt is passed through the oil drain hole 91 and the alignment hole C on the eccentric block 7 of the driven shaft 4 to fix the initial position of the eccentric block 7 on the driven shaft 4 relative to the housing. Another long bolt is passed through the oil filler hole 81 and the alignment hole C on the eccentric block 7 of the drive shaft 3 to fix the initial position of the eccentric block 7 on the drive shaft 3 relative to the housing, so that the drive shaft 2 cannot rotate during motor connection. This ensures that the relative position of the upper and lower eccentric blocks is set in the same direction in the initial installation state, and the two eccentric blocks have no phase angle difference.

[0030] The eccentric block 7 includes an assembly cylinder 10 mounted on the drive shaft 3 or driven shaft 4, a middle sector plate 11 integrally formed with the assembly cylinder 10, an upper sector plate 12 sleeved on the assembly cylinder 10, and a lower sector plate 13 sleeved on the assembly cylinder 10. The upper sector plate 12, the middle sector plate 11, and the lower sector plate 13 have equal sector radii and central angles. The upper sector plate 12, the middle sector plate 11, and the lower sector plate 13 are connected by bolts. The position of the upper sector plate 12 and the lower sector plate 13 is adjusted circumferentially to adjust the central angle of the eccentric block 7. Figure 4 As shown, a straight keyway A is provided on the inner wall of the assembly cylinder 10 to engage with the mating key B on the drive shaft 3 or driven shaft 4. The middle sector plate 11 is integrally formed with the assembly cylinder 10 and cannot rotate. The upper sector plate 12 and the lower sector plate 13 are fitted on the assembly cylinder 10 and can rotate relative to the assembly cylinder 10. By rotating the upper sector plate 12 and the lower sector plate 13 on the assembly cylinder 10, the central angle of the eccentric block 7 can be changed, thereby changing the vibration force. After the central angle is adjusted to the correct position, the bolts fix the upper sector plate 12, the middle sector plate 11 and the lower sector plate 13 together to form an integral eccentric block 7.

[0031] The middle sector plate 11 has five through holes D evenly spaced circumferentially. The middle through hole is aligned with the center of the assembly cylinder. The upper sector plate 12 and the lower sector plate 13 each have a connecting hole E corresponding to one of the through holes D. The middle through hole D forms an alignment hole C or is aligned and connected with the connecting hole E to form an alignment hole C. When the middle sector plate 11, upper sector plate 12, and lower sector plate 13 overlap, the connecting hole E is aligned with the through hole D, and the central angle of the eccentric block is the smallest. At this time, the alignment hole C is formed by the alignment and connection of the middle through hole D and the middle connecting hole E. When the upper sector plate 12 and lower sector plate 13 are rotated by the same angle to both sides of the middle sector plate 11, so that the middle through hole D is aligned with the non-middle connecting hole E, the alignment hole C is formed by the alignment and connection of the middle through hole D and the non-middle connecting hole E. The middle connecting hole E is aligned and connected. When the upper sector plate 12 and the lower sector plate 13 are rotated to the point where the middle through hole D and the connecting hole E are not aligned, the alignment hole C is the middle through hole D. After the lower sector plate 13 and the upper sector plate 12 are rotated and adjusted into place, bolts are passed through the non-middle through hole D and the aligned connecting hole E and tightened to connect the middle sector plate 11, the upper sector plate 12 and the lower sector plate 13 into a whole to form the eccentric block 7.

[0032] The central angle of the middle-layer sector plate 11 is 70 degrees, the central interval angle between adjacent through holes D is 12.5 degrees, and the interval angle between the side through holes D and the edge of the middle-layer sector plate is equal. Figures 5-6As shown, five through holes D are formed on the middle sector plate 11, and five connecting holes E corresponding one-to-one with the through holes D are formed on both the upper sector plate 12 and the lower sector plate 13. The center-to-center distance between adjacent through holes D is 12.5 degrees. Figure 5 As shown, when the upper, middle, and lower sector plates overlap, the central angle of the eccentric block 7 is 70 degrees. By rotating the upper sector plate 12 and the lower sector plate 13 to the sides of the middle sector plate 11 by the same angle, aligning the connecting hole E with the through hole D (which is not in the middle), the central angle of the eccentric block 7 can be adjusted. Figure 6 As shown, the upper sector plate 12 and the lower sector plate 13 are rotated 12.5 degrees to both sides of the middle sector plate 11 to adjust the central angle of the eccentric block to 95 degrees; the upper sector plate 12 and the lower sector plate 13 are rotated 25 degrees to both sides of the middle sector plate 11 to adjust the central angle of the eccentric block 7 to 120 degrees; the upper sector plate 12 and the lower sector plate 13 are rotated 37.5 degrees to both sides of the middle sector plate 11 to adjust the central angle of the eccentric block 7 to 145 degrees; the upper sector plate 12 and the lower sector plate 13 are rotated 50 degrees to both sides of the middle sector plate 11 to adjust the central angle of the eccentric block 7 to 170 degrees. After adjustment, the upper, middle and lower sector plates are connected as a whole by passing a bolt through the non-center through hole D and the aligned connecting hole E to form the integral eccentric block 7. The eccentricity of the eccentric block is calculated according to the formula... With a fixed sector radius R, outer radius r, and inner radius r0 of the eccentric block 7, the eccentricity and the centripetal force generated by the rotation of the eccentric block 7 can be adjusted by adjusting the central angle of the eccentric block 7. This allows for the adjustment of the vibration force by adjusting the central angle of the eccentric block. Based on the eccentricity calculation formula, the sector radius R, outer radius r, inner radius r0, and central angle 2α of the eccentric block 7, the eccentricity and centripetal force of the eccentric block 7 at different central angles can be calculated. The centripetal forces corresponding to different central angles of the eccentric block 7 are marked on the housing 1. The central angle of the eccentric block can be adjusted during the assembly of the vibrator according to the requirements of vibration harvesting. Alternatively, when the harvesting requirements of the vibrator are different, the eccentric block can be disassembled and the central angle of the eccentric block adjusted, and then reassembled to ensure that the vibration force of the vibrator meets the harvesting requirements.

[0033] This invention also protects an assembly method for the above-described double eccentric vibrators arranged in the same direction and overlapping, characterized by comprising the following steps: The first step is to adjust the central angle of eccentric block 7 according to the vibration requirements; The second step is to assemble the eccentric block 7 and the driven gear 6 onto the driven shaft 4, assemble the eccentric block 7 and the driving gear 5 onto the driven shaft 3, assemble the driving shaft 3 and the driven shaft 4 into the housing 1 respectively, forming the meshing of the driving gear 5 and the driven gear 6, and then install the motor 2 into the housing 1 and connect it to the driving shaft 3.

[0034] The assembly method of the double eccentric vibrator with overlapping arrangement in the same direction described above adjusts the vibration force of the eccentric block 7 by adjusting the central angle of the eccentric block 7, so that the vibrator can be assembled according to different picking needs, thereby improving the picking rate and improving the picking adaptability of the vibrator to meet the picking needs of different fruit trees.

[0035] The second step specifically refers to, First: Connect the eccentric block 7 and the driven gear 6 with the mating key B of the driven shaft 4 to assemble the eccentric block 7 and the driven gear 6 onto the driven shaft 4. Then connect the eccentric block 7 and the driven gear 5 with the mating key B of the driven shaft 3 to assemble the eccentric block 7 and the driven gear 5 onto the driven shaft 3. Next, the drive shaft 3 and driven shaft 4 are respectively assembled onto the housing 1. The tooth tips of the drive gear 5, aligned with the slotted keyway A, and the tooth grooves of the driven gear 6, aligned with the slotted keyway A, are engaged, forming the initial installation state where the slotted keyway A of the drive gear 5, the tooth grooves of the drive gear 5 meshing with the driven gear 6, the top teeth of the driven gear meshing with the drive gear 5, and the slotted keyway A of the driven gear 6 are sequentially aligned. During the assembly process, as long as the relative positions of the slotted keyway A with the tooth tips and tooth grooves are correct, the engagement between the drive gear 5 and the driven gear 6 can be quickly formed. This not only improves the assembly efficiency but also reduces the risk of equipment failure due to improper assembly. Through the precise positional relationship between the slotted keyway A and the tooth tips and tooth grooves, the meshing between the drive gear and the driven gear is made tighter and more stable, thereby improving the transmission efficiency and ensuring that the equipment can fully utilize the input power during operation, thus improving the transmission efficiency. Next, a long bolt inserted from top to bottom passes through the oil filling hole 81 and extends into the alignment hole C of the eccentric block 7 on the drive shaft 3. A long bolt inserted from bottom to top passes through the oil drain hole 91 and extends into the alignment hole C of the eccentric block 7 on the driven shaft 4 to position the two eccentric blocks 7. Alignment holes C are made on the eccentric blocks 7. During installation, a long bolt passes through the oil drain hole 91 and the alignment hole C on the eccentric block 7 of the driven shaft 4 to fix the initial position of the eccentric block 7 on the driven shaft 4 relative to the housing. Another long bolt passes through the oil filling hole 81 and the alignment hole C on the eccentric block 7 of the drive shaft 3 to fix the initial position of the eccentric block 7 on the drive shaft 3 relative to the housing. This prevents the drive shaft 2 from rotating when the motor is connected, ensuring that the relative position of the two eccentric blocks 7 in the initial installation state is set in the same direction and that there is no phase angle difference between the two eccentric blocks, thus ensuring the correct initial installation position relationship of the eccentric blocks in the housing. Then, install the motor 2 on the housing 1 and connect it to the drive shaft 3. Remove the two long bolts and install the corresponding plugs on the oil filling hole 81 and the oil drain hole 91 respectively.

[0036] The first step specifically involves rotating the lower sector plate 12 and the upper sector plate 13 by the same angle towards both sides of the middle sector plate 11 to adjust the central angle of the eccentric block 7. The method for adjusting the central angle of the eccentric block 7 is simple and easy to implement. The central angle can be adjusted during vibrator assembly according to the requirements of vibration harvesting, or it can be adjusted by disassembling the eccentric block and then reassembling it when the harvesting requirements of the vibrator differ, so that the vibration force of the vibrator meets the harvesting requirements.

[0037] The method for adjusting the central angle of eccentric block 7 is as follows: The upper sector plate 12 and the lower sector plate 13 are rotated 12.5 degrees to both sides of the middle sector plate 11, and then the upper sector plate 12, the middle sector plate 11 and the lower sector plate 13 are fixed together with bolts to form an eccentric block 7 with a central angle of 95 degrees. The upper sector plate 12 and the lower sector plate 13 are rotated 25 degrees to both sides of the middle sector plate 11, and then the upper sector plate 12, the middle sector plate 11 and the lower sector plate 13 are fixed together with bolts to form an eccentric block 7 with a central angle of 120 degrees. The upper sector plate 12 and the lower sector plate 13 are rotated 37.5 degrees to both sides of the middle sector plate 11, and then the upper sector plate 12, the middle sector plate 11 and the lower sector plate 13 are fixed together with bolts to form an eccentric block 7 with a central angle of 145 degrees. The upper sector plate 12 and the lower sector plate 13 are rotated 50 degrees to both sides of the middle sector plate 11, and then bolts are used to fix the upper sector plate 12, the middle sector plate 11 and the lower sector plate 13 to form an eccentric block 7 with a central angle of 170 degrees.

[0038] Five through holes D are formed on the middle sector plate 11, and five connecting holes E corresponding one-to-one with the through holes D are formed on both the upper sector plate 12 and the lower sector plate 13. The center-to-center interval between adjacent through holes D is 12.5 degrees. Figure 5 As shown, when the upper, middle, and lower sector plates overlap, the central angle of the eccentric block 7 is 70 degrees. By rotating the upper sector plate 12 and the lower sector plate 13 to the sides of the middle sector plate 11 by the same angle, aligning the connecting hole E with the through hole D (which is not in the middle), the central angle of the eccentric block 7 can be adjusted. Figure 6As shown, the upper sector plate 12 and the lower sector plate 13 are rotated 12.5 degrees to both sides of the middle sector plate 13 to adjust the central angle of the eccentric block to 95 degrees; the upper sector plate 12 and the lower sector plate 13 are rotated 25 degrees to both sides of the middle sector plate 11 to adjust the central angle of the eccentric block to 120 degrees; the upper sector plate 12 and the lower sector plate 13 are rotated 37.5 degrees to both sides of the middle sector plate 11 to adjust the central angle of the eccentric block to 145 degrees; the upper sector plate 12 and the lower sector plate 13 are rotated 50 degrees to both sides of the middle sector plate 11 to adjust the central angle of the eccentric block to 170 degrees. After adjustment, the upper, middle and lower sector plates are connected as a whole by passing a bolt through the non-center through hole D and the aligned connecting hole E to form a whole eccentric block. The eccentricity of the eccentric block is calculated according to the formula... With a fixed sector radius R, outer radius r, and inner radius r0 of the eccentric block 7, the eccentricity and the centripetal force generated by the rotation of the eccentric block 7 can be adjusted by adjusting the central angle of the eccentric block 7. This allows for the adjustment of the vibration force by adjusting the central angle of the eccentric block. Based on the eccentricity calculation formula, the sector radius R, outer radius r, inner radius r0, and central angle 2α of the eccentric block 7, the eccentricity and centripetal force of the eccentric block 7 at different central angles can be calculated. The centripetal forces corresponding to different central angles of the eccentric block 7 are marked on the housing 1. The central angle of the eccentric block can be adjusted during the assembly of the vibrator according to the requirements of vibration harvesting. Alternatively, when the harvesting requirements of the vibrator are different, the eccentric block can be disassembled and the central angle of the eccentric block adjusted, and then reassembled to ensure that the vibration force of the vibrator meets the harvesting requirements.

[0039] The technical solutions of the embodiments of the present invention have been fully described above with reference to the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A double eccentric vibrator arranged in overlapping directions, comprising a housing and a motor mounted on the housing, wherein a drive shaft and a driven shaft parallel to the drive shaft are installed in the housing, and the drive shaft is connected to the motor, characterized in that: The drive shaft is arranged vertically, and the driven shaft is arranged parallel to the drive shaft at an angle below it. The lower end of the drive shaft is equipped with a drive gear, and the upper end of the driven shaft is equipped with a driven gear that meshes with the drive gear. Eccentric blocks are respectively mounted on the drive shaft and the driven shaft. The two eccentric blocks are in the same direction and are partially overlapped. The central angle of the eccentric blocks is adjustable. The inner circles of the driving gear, driven gear, and eccentric block are all provided with a straight keyway. The driving shaft and driven shaft are provided with mating keys that cooperate with the straight keyway. The straight keyway of the driving gear is radially aligned with the tooth groove of the driving gear, and the straight keyway of the driven gear is radially aligned with the tooth tip of the driven gear. In the initial installation state, the straight keyway of the driving gear, the tooth groove of the driving gear meshing with the driven gear, the tip tooth of the driven gear meshing with the driving gear, and the straight keyway of the driven gear are aligned in sequence. The upper cover plate of the housing has an oil filling hole, the lower cover plate has an oil drain hole, and the eccentric block has a vertical alignment hole. The oil filling hole is coaxially aligned with the alignment hole on the eccentric block of the drive shaft, and the oil drain hole is coaxially aligned with the alignment hole on the eccentric block of the driven shaft. The eccentric block includes an assembly cylinder mounted on the drive shaft or driven shaft, a middle sector plate integrally formed with the assembly cylinder, an upper sector plate sleeved on the assembly cylinder, and a lower sector plate sleeved on the assembly cylinder. The upper, middle, and lower sector plates have the same sector radius and central angle. The upper, middle, and lower sector plates are connected by bolts. The position of the upper and lower sector plates can be adjusted circumferentially to adjust the central angle of the eccentric block.

2. Dual eccentric vibrator in a same direction overlapping arrangement according to claim 1, characterized in that: The middle fan-shaped plate has five through holes evenly spaced along the circumference. The middle through hole is aligned with the center of the assembly cylinder. The upper and lower fan-shaped plates each have a connecting hole corresponding to the through hole. The middle through hole forms an alignment hole or is aligned and connected with the connecting hole to form an alignment hole.

3. Dual eccentric vibrator in a same direction overlapping arrangement according to claim 2, characterized in that: The central angle of the middle fan-shaped plate is 70 degrees, the central interval angle between adjacent through holes is 12.5 degrees, and the interval angle between the side through holes and the edge of the middle fan-shaped plate is equal.

4. The assembly method of the double eccentric vibrators arranged in the same direction and overlapping as described in any one of claims 1 to 3, characterized in that: Includes the following steps, The first step is to adjust the central angle of the eccentric block according to the vibration requirements; The second step is to assemble the eccentric block and driven gear onto the driven shaft, assemble the eccentric block and driving gear onto the driven shaft, assemble the driving shaft and driven shaft into the housing respectively to form the meshing of the driving gear and driven gear, and then install the motor onto the housing and connect it to the driving shaft.

5. The assembly method of the double eccentric vibrators arranged in the same direction and overlapping according to claim 4, characterized in that: The second step specifically refers to, First: Connect the eccentric block and driven gear to the key of the driven shaft, and assemble the eccentric block and driven gear onto the driven shaft. Then connect the eccentric block and driving gear to the key of the driving shaft, and assemble the eccentric block and driving gear onto the driving shaft. Next, the drive shaft and driven shaft are assembled onto the housing respectively. The tooth tips on the drive gear that are aligned with the slotted keyway and the tooth grooves on the driven gear that are aligned with the slotted keyway are meshed together, forming the slotted keyway of the drive gear, the tooth grooves of the drive gear meshing with the driven gear, the top teeth of the driven gear meshing with the drive gear, and the slotted keyway of the driven gear in the initial installation state are aligned in sequence. Next, a long bolt inserted from top to bottom is passed through the oil filling hole and extended into the alignment hole of the eccentric block on the drive shaft, and a long bolt inserted from bottom to top is passed through the oil drain hole and extended into the alignment hole of the eccentric block on the driven shaft to position the two eccentric blocks. Then, mount the motor onto the housing and connect it to the drive shaft. Remove the two long bolts and install the corresponding plugs on the oil filler hole and oil drain hole, respectively.

6. The assembly method of the double eccentric vibrators arranged in the same direction and overlapping according to claim 5, characterized in that: The first step specifically refers to rotating the lower and upper sector plates by the same angle to both sides of the middle sector plate to adjust the central angle of the eccentric block.

7. The assembly method of the double eccentric vibrator arranged in the same direction and overlapping according to claim 6, characterized in that: The method for adjusting the central angle of the eccentric block is as follows: The upper and lower sector plates are rotated 12.5 degrees to both sides of the middle sector plate, and then bolts are used to fix the upper, middle and lower sector plates together to form an eccentric block with a central angle of 95 degrees. The upper and lower sector plates are rotated 25 degrees to both sides of the middle sector plate, and then bolts are used to fix the upper, middle and lower sector plates together to form an eccentric block with a central angle of 120 degrees. The upper and lower sector plates are rotated 37.5 degrees to both sides of the middle sector plate, and then bolts are used to fix the upper, middle and lower sector plates together to form an eccentric block with a central angle of 145 degrees. The upper and lower sector plates are rotated 50 degrees to both sides of the middle sector plate, and then bolts are used to fix the upper, middle and lower sector plates together to form an eccentric block with a central angle of 170 degrees.

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