Double-eccentric vibrator overlapped in same direction and assembly method thereof

Abstract

A double-eccentric vibrator overlapped in the same direction comprises a shell and a motor installed on the shell, a driving shaft and a driven shaft parallel to the driving shaft are installed in the shell, the driving shaft is connected with the motor, the driving shaft is arranged vertically, the driven shaft is arranged obliquely below the driving shaft in parallel, a driving gear is assembled at the lower end of the driving shaft, and a driven gear is assembled at the lower end of the driven shaft. A driven gear meshed with the driving gear is assembled at the upper end of the driven shaft, eccentric blocks are assembled on the driving shaft and the driven shaft respectively, the two eccentric blocks are in the same direction, the upper layer and the lower layer are overlapped, and the central angle of each eccentric block can be adjusted. The vibration force can be effectively improved, the horizontal size of the vibrator can be reduced, the vibration force and couple of the two eccentric blocks are alternately formed, the vibration effect is improved, the picking effect and the picking rate of the picking machine are effectively improved on the basis that the size of the vibrator is prevented from being greatly increased, and the picking adaptability of the vibrator is improved; the picking requirements of different fruit trees are met. The invention further provides an assembling method of the double eccentric vibrators arranged in the same-direction overlapping mode.

Description

Technical Field

[0001] The present invention relates to a double eccentric vibrator arranged in the same direction and overlapping and an assembly method thereof, belonging to the technical field of vibration harvesting. Background Art

[0002] Orchard harvesting operations are characterized by high labor intensity and strong seasonality. The use of mechanical harvesters can greatly improve the harvesting efficiency. The vibratory fruit harvester generally includes a traveling mechanism, a clamping and vibrating mechanism for vibrating and picking fruits, a collecting umbrella for receiving the shaken fruits, and a fruit output mechanism for outputting the fruits from the collecting umbrella. It has strong clamping adaptability and high reliability in vibrating and picking, and can meet the requirements of vibrating and picking fruit trees in different terrains. The vibrator in the clamping and vibrating mechanism generates vibration through the rotation of the eccentric shaft. However, the existing vibrator has a cumbersome structure design and a fixed amplitude. The same amplitude is used for fruit trees of different varieties, which cannot meet the picking requirements of different varieties of fruit trees. The vibration force and vibration effect of the equipment are insufficient, affecting the mechanical harvesting rate and the picking effect is not good. After mechanical vibration picking, there are still some fruits remaining, which requires secondary vibration picking or manual picking. However, secondary vibration picking causes great damage to the fruit trees, and the efficiency of manual picking is low. Therefore, in order to improve the harvesting rate, only the vibration force of the vibrator can be increased. Generally, an eccentric block with an increased eccentric radius is used to obtain a greater vibration force. However, the increase of the eccentric block will lead to an increase in the volume of the entire vibrator, which is not conducive to the arrangement of the vibrator on the harvester. Moreover, the eccentric block is the key equipment for generating vibration. The deviation of the assembly angle of the eccentric block will cause the vibration effect to be unstable. In order to achieve the assembly accuracy of the eccentric block and reduce the deviation of the assembly angle, it takes a lot of time and effort to adjust multiple times. Summary of the Invention

[0003] The double eccentric vibrator arranged in the same direction and overlapping provided by the present invention can not only effectively improve the vibration force, but also reduce the horizontal size of the vibrator. The alternating formation of the vibration forces and the couple of the two eccentric blocks improves the vibration effect, effectively improves the picking effect and the picking rate of the harvester on the basis of avoiding a large increase in the size of the vibrator, improves the picking adaptability of the vibrator, and meets the picking requirements of different fruit trees. The present invention also provides an assembly method for the double eccentric vibrator arranged in the same direction and overlapping.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] Double eccentric vibrators arranged in the same direction and overlapping, including a housing and a motor installed on the housing. A driving shaft and a driven shaft parallel to the driving shaft are installed in the housing. The driving shaft is connected to the motor. It is characterized in that: the driving shaft is arranged vertically, the driven shaft is arranged parallel to the driving shaft and obliquely below it. A driving gear is assembled at the lower end of the driving shaft, and a driven gear meshing with the driving gear is assembled at the upper end of the driven shaft. Eccentric blocks are respectively assembled on the driving shaft and the driven shaft. The two eccentric blocks are arranged in the same direction and partially overlap in the upper and lower layers, and the central angle of the eccentric blocks is adjustable.

[0006] Preferably, a straight keyway is opened on the inner circle of the driving gear, the driven gear and the eccentric block. A mating key that matches the straight keyway is provided on both the driving shaft and the driven shaft. The straight keyway of the driving gear is aligned radially with the tooth groove of the driving gear, and the straight keyway of the driven gear is aligned radially with the tooth tip of the driven gear. In the initial installation state, the straight keyway of the driving gear, the tooth groove where the driving gear meshes with the driven gear, the top tooth where the driven gear meshes with the driving gear, and the straight keyway of the driven gear are aligned in sequence.

[0007] Preferably, an oil filling hole is opened on the upper cover plate of the housing, and an oil drain hole is opened on the lower cover plate. An alignment hole along the vertical direction is opened on the eccentric block. The oil filling hole is coaxially aligned with the alignment hole on the eccentric block of the driving shaft, and the oil drain hole is coaxially aligned with the alignment hole on the eccentric block of the driven shaft.

[0008] Preferably, the eccentric block includes a fitting cylinder assembled on the driving shaft or the driven shaft, a middle-layer sector plate integrally formed with the fitting cylinder, an upper-layer sector plate sleeved on the fitting cylinder, and a lower-layer sector plate sleeved on the fitting cylinder. The upper-layer sector plate, the middle-layer sector plate and the lower-layer sector plate have the same sector radius and central angle. The upper-layer sector plate, the middle-layer sector plate and the lower-layer sector plate are connected by bolts. The positions of the upper-layer sector plate and the lower-layer sector plate are adjusted along the circumferential direction to adjust the central angle of the eccentric block.

[0009] Preferably, five through holes evenly spaced along the circumferential direction are opened on the middle-layer sector plate. The through hole in the middle is aligned with the center of the fitting cylinder. Connecting holes corresponding to the through holes one by one are respectively opened on the upper-layer sector plate and the lower-layer sector plate. The through hole in the middle forms an alignment hole or is aligned and communicated with the connecting hole to form an alignment hole.

[0010] Preferably, the central angle of the middle-layer sector plate is 70 degrees, the central angle interval between adjacent through holes is 12.5 degrees, and the interval angles between the side through holes and the edge of the middle-layer sector plate are equal.

[0011] The assembly method of the double eccentric vibrators arranged in the same direction and overlapping as described above is characterized in that: it includes the following steps.

[0012] The first step is to adjust the central angle of the eccentric block according to the vibration requirements.

[0013] In the second step, assemble the eccentric block and the driven gear on the driven shaft, assemble the eccentric block and the driving gear on the driving shaft, respectively assemble the driving shaft and the driven shaft in the housing to form the meshing of the driving gear and the driven gear, and then install the motor on the housing and connect it to the driving shaft.

[0014] Preferably, the second step specifically means that

[0015] First: Assemble the eccentric block and the driven gear on the driven shaft by respectively mating the flat key grooves of the eccentric block and the driven gear with the mating keys of the driven shaft, and assemble the eccentric block and the driving gear on the driving shaft by respectively mating the flat key grooves of the eccentric block and the driving gear with the driving shaft;

[0016] Next, respectively assemble the driving shaft and the driven shaft on the housing, and mesh the tooth top of the driving gear aligned with the flat key groove and the tooth groove of the driven gear aligned with the flat key groove to form the alignment of the flat key groove of the driving gear, the tooth groove where the driving gear meshes with the driven gear, the top tooth where the driven gear meshes with the driving gear, and the flat key groove of the driven gear in sequence in the initial installation state;

[0017] After that, pass a long bolt passing through from top to bottom through the oil filling hole and extend it into the alignment hole of the eccentric block on the driving shaft, and pass a long bolt passing through from bottom to top through the oil drain hole and extend it into the alignment hole of the eccentric block on the driven shaft to position the two eccentric blocks;

[0018] Then, install the motor on the housing and connect it to the driving shaft, and then remove the two long bolts and install the corresponding screw plugs on the oil filling hole and the oil drain hole respectively.

[0019] Preferably, the first step specifically means rotating the lower sector plate and the upper sector plate by the same angle to the two sides of the middle sector plate to adjust the central angle of the eccentric block.

[0020] Preferably, the method for adjusting the central angle of the eccentric block is

[0021] The upper sector plate and the lower sector plate are respectively rotated 12.5 degrees to the two sides of the middle sector plate, and then the upper sector plate, the middle sector plate and the lower sector plate are fixed together with bolts to form an eccentric block with a central angle of 95 degrees;

[0022] The upper sector plate and the lower sector plate are respectively rotated 25 degrees to the two sides of the middle sector plate, and then the upper sector plate, the middle sector plate and the lower sector plate are fixed together with bolts to form an eccentric block with a central angle of 120 degrees;

[0023] The upper sector plate and the lower sector plate are respectively rotated 37.5 degrees to the two sides of the middle sector plate, and then the upper sector plate, the middle sector plate and the lower sector plate are fixed together with bolts to form an eccentric block with a central angle of 145 degrees;

[0024] The upper and lower sector plates rotate 50 degrees respectively to both sides of the middle sector plate, and then bolts are used to fixedly connect the upper sector plate, the middle sector plate and the lower sector plate to form an eccentric block with a central angle of 170 degrees.

[0025] The beneficial effects of the invention are as follows:

[0026] For the double eccentric vibrator with co-directional overlapping arrangement of the present invention, the driving shaft is arranged vertically, the driven shaft is arranged in parallel obliquely below the driving shaft so that the two eccentric blocks are distributed in upper and lower layers, the two eccentric blocks are arranged in the same direction and partially overlap in the upper and lower layers. The motor drives the driving shaft to rotate, and the meshing of the driving gear and the driven gear will drive the driving shaft and the driven shaft to rotate in opposite directions, so that the two eccentric blocks arranged in the same direction rotate in opposite directions. Every time they rotate 180 degrees, the two eccentric blocks will be in the same direction and partially overlap, making the vibrations of the two eccentric blocks synthesize into one vibration along the center connection line direction of the driving shaft and the driven shaft. It is equivalent to synthesizing the vibration forces of the two eccentric blocks distributed up and down into one vibration force, which can not only effectively improve the vibration force to enhance the vibration effect, but also the setting that the two eccentric blocks partially overlap in the upper and lower layers can effectively reduce the center distance between the driving shaft and the driven shaft to reduce the horizontal size of the vibrator. The two eccentric blocks are distributed in upper and lower layers, so that the forces generated when the two eccentric blocks rotate are not on the same horizontal plane. When the upper and lower two eccentric blocks rotate to the opposite setting, the forces generated by the two eccentric blocks synthesize a couple of forces, making the synthesized vibration force and couple of forces of the two eccentric blocks change periodically and the phase angle difference is 90 degrees. The alternation of the vibration forces and couple of forces of the two eccentric blocks improves the vibration effect and effectively improves the picking effect and picking rate of the picker on the basis of avoiding a large increase in the size of the vibrator.

[0027] The central angle of the eccentric block is adjustable. The vibration force of the eccentric block can be adjusted by adjusting the central angle of the eccentric block, so that the vibrator can be assembled according to different picking requirements, improving the picking rate, thereby enhancing the picking adaptability of the vibrator and meeting the picking requirements of different fruit trees. Description of the Drawings

[0028] Figure 1 It is a schematic diagram of the double eccentric vibrator with co-directional overlapping arrangement of the present invention.

[0029] Figure 2 It is a schematic diagram of the change state of the co-directional synthesis of the vibration forces and the reverse formation of the couple of forces of the two eccentric blocks during the rotation of the driving gear.

[0030] Figure 3 It is a schematic diagram of the meshing of the driving gear and the driven gear in the initial installation state.

[0031] Figure 4 It is a side view of the eccentric block when the upper, middle and lower sector blocks overlap.

[0032] Figure 5The front view of the eccentric block when the upper, middle and lower sector blocks overlap.

[0033] Figure 6 The front view of the eccentric block when the central angles are 95, 120, 145, and 170 degrees respectively.

[0034] Figure 7 The schematic diagram of the eccentric block in the prior art. Detailed implementation manners

[0035] The following Figures 1 to 7 will describe the embodiments of the present invention in detail.

[0036] A double eccentric vibrator arranged with same - direction overlap includes a housing 1 and a motor 2 installed on the housing. A driving shaft 3 and a driven shaft 4 parallel to the driving shaft 3 are installed in the housing 1. The driving shaft 3 is connected to the motor 2. It is characterized in that: the driving shaft 3 is arranged vertically, the driven shaft 4 is arranged parallel and obliquely below the driving shaft 3. A driving gear 5 is assembled at the lower end of the driving shaft 3, and a driven gear 6 meshing with the driving gear 5 is assembled at the upper end of the driven shaft 4. Eccentric blocks 7 are respectively assembled on the driving shaft 3 and the driven shaft 4. The two eccentric blocks 7 are arranged in the same direction and partially overlap in the upper and lower layers, and the central angle of the eccentric block 7 is adjustable.

[0037] For the above - mentioned double eccentric vibrator arranged with same - direction overlap, the driving shaft 3 is arranged vertically, and the driven shaft 4 is arranged parallel and obliquely below the driving shaft 3 so that the two eccentric blocks 7 are distributed in the upper and lower layers. The two eccentric blocks 7 are arranged in the same direction and partially overlap in the upper and lower layers. The motor 2 drives the driving shaft 3 to rotate. The meshing of the driving gear 5 and the driven gear 6 will drive the driving shaft 3 and the driven shaft 4 to rotate in opposite directions, so that the two eccentric blocks 7 arranged in the same direction rotate in opposite directions. Every time it rotates 180 degrees, the two eccentric blocks will form the same direction and partial overlap. The vibrations of the two eccentric blocks 7 are combined into one vibration along the central connection line direction of the driving shaft and the driven shaft, which is equivalent to combining the vibration forces of two eccentric blocks distributed up and down into one vibration force. This can not only effectively improve the vibration force to enhance the vibration effect, but also the setting of the two eccentric blocks with partial overlap in the upper and lower layers can effectively reduce the center distance between the driving shaft 3 and the driven shaft 4 to reduce the horizontal size of the vibrator. The two eccentric blocks 7 are distributed in the upper and lower layers, so that the forces generated when the two eccentric blocks rotate are not in the same horizontal plane. When the upper and lower eccentric blocks rotate to the opposite setting, the forces generated by the two eccentric blocks form a couple of forces, making the combined vibration force and couple of forces of the two eccentric blocks change periodically and the phase angle difference is 90 degrees, as Figure 2As shown in the figure, in Figure a, the two eccentric blocks are arranged in the same direction in the initial state. In Figure b, when the two eccentric blocks rotate 90 degrees in the opposite direction, a couple is formed by the two eccentric blocks in the opposite direction. In Figure c, when the two eccentric blocks rotate 180 degrees in the opposite direction, the vibration forces are synthesized in the same direction. In Figure d, when the two eccentric blocks rotate 270 degrees in the opposite direction, a couple is formed by the two eccentric blocks in the opposite direction. The alternating formation of the vibration forces and couples of the two eccentric blocks improves the vibration effect, and effectively improves the picking effect and picking rate of the picker on the basis of avoiding a large increase in the size of the vibrator.

[0038] Since during the rotation of the eccentric block, the magnitude of the centripetal force directly affects the vibration 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 angular velocity of rotation. The specific formula is F 向 = mω 2 e, 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 eccentric moments and their vibration forces of several commonly used eccentric blocks recorded in "Mining Machinery", 1999.6, the formula for calculating the eccentric moment of the eccentric block is publicly available as:

[0039]

[0040] Among them, as Figure 7 shown, α is the central angle of the eccentric block (half of the central angle of the eccentric block), R is the radius of the eccentric block sector, r is the outer radius of the ring, and r0 is the inner radius of the ring. It can be seen from the formula that when the radius of the eccentric block sector, the outer radius of the ring, and the inner radius of the ring are fixed, the magnitude of the eccentricity e is related to the central angle α. The central angle α is half of the central angle of the eccentric block. Thus, by changing the central angle of the eccentric block, the centripetal force of the eccentric block can be changed, and thus the vibration force can be changed. The vibration force of the eccentric block can be adjusted by adjusting the central angle of the eccentric block 7, so that the vibrator can be assembled according to different picking requirements, improving the picking rate, thereby improving the picking adaptability of the vibrator and meeting the picking requirements of different fruit trees.

[0041] Among them, a straight keyway A is provided on the inner circles of the driving gear 5, the driven gear 6 and the eccentric block 7, and a mating key B that mates with the straight keyway A is provided on both the driving shaft 3 and the driven shaft 4. 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 where the driving gear 5 meshes with the driven gear 6, the top tooth where the driven gear 6 meshes with the driving gear 5, and the straight keyway A of the driven gear are aligned in sequence. The cooperation between the straight keyway A and the mating key B enables the gear and the 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 prevent a phase angle difference from forming between the two eccentric blocks arranged vertically, by aligning the straight keyway A of the driving gear 5 with the tooth tip and the straight keyway A of the driven gear 6 with the tooth groove, and the tooth tip and the tooth groove opposite to the straight keyway A form a meshing, it forms as Figure 3 shown that in the initial installation state, the straight keyway A of the driving gear 5, the tooth groove where the driving gear 5 meshes with the driven gear 6, the top tooth where the driven gear 6 meshes with the driving gear 5, and the straight keyway A of the driven gear are aligned in sequence, ensuring that the driving gear and the driven gear can be accurately aligned during installation, enabling the two eccentric blocks 7 to maintain a stable relative position during rotation, thereby avoiding uneven vibration or equipment damage caused by position deviation, and making the installation of the gear simpler and more intuitive. During the assembly process, as long as the relative positions of the straight keyway with the tooth tip and the tooth groove are correct, the cooperation between the driving 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 caused by improper assembly. Through the precise positional relationship between the straight keyway A and the tooth tip and the tooth groove, the meshing between the driving gear and the driven gear is made closer and more stable, thereby improving the transmission efficiency and ensuring that the equipment can make full use of the input power during operation and improving the transmission efficiency.

[0042] Among them, an oil filling hole 81 is provided on the upper cover plate 8 of the housing 1, and an oil drain hole 91 is provided on the lower cover plate 9. An alignment hole C in the vertical direction is provided on the eccentric block 7. The oil filling hole 81 is coaxially aligned with the alignment hole C on the eccentric block 7 of the driving 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. Through the alignment of the straight keyway A with the tooth top and tooth groove in the driving gear 5 and the driven gear 6, it can be ensured that the two eccentric blocks are arranged in the same direction after the driving gear 5 and the driven gear 6 are engaged. However, during the connection process of the motor 1 and the driving shaft 3, the driving shaft 3 may rotate, resulting in a phase angle difference between the two eccentric blocks 7 and unable to maintain the same direction. In order to prevent the rotation of the driving shaft 3 during the motor connection and ensure the correct initial installation position relationship of the eccentric block in the housing, an alignment hole C is provided 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 filling hole 81 and the alignment hole C on the eccentric block 7 of the driving shaft 3 to fix the initial position of the eccentric block 7 on the driving shaft 3 relative to the housing, so that the driving shaft 2 cannot rotate during the motor connection, ensuring that the relative position relationship between the upper and lower eccentric blocks in the initial installation state is arranged in the same direction and there is no phase angle difference between the two eccentric blocks.

[0043] Among them, the eccentric block 7 includes a fitting cylinder 10 fitted on the driving shaft 3 or the driven shaft 4, a middle-layer sector plate 11 integrally formed with the fitting cylinder 10, an upper-layer sector plate 12 sleeved on the fitting cylinder 10, and a lower-layer sector plate 13 sleeved on the fitting cylinder 10. The upper-layer sector plate 12, the middle-layer sector plate 11, and the lower-layer sector plate 13 have the same sector radius and central angle. The upper-layer sector plate 12, the middle-layer sector plate 11, and the lower-layer sector plate 13 are connected by bolts, and the positions of the upper-layer sector plate 12 and the lower-layer sector plate 13 are adjusted along the circumference to adjust the central angle of the eccentric block 7. As Figure 4 shown, a straight keyway A is provided on the inner wall of the fitting cylinder 10 to cooperate with the mating key B on the driving shaft 3 or the driven shaft 4. The middle-layer sector plate 11 is integrally formed with the fitting cylinder 10 and cannot rotate. The upper-layer sector plate 12 and the lower-layer sector plate 13 are sleeved on the fitting cylinder 10 and can rotate relative to the fitting cylinder 13. By rotating the upper-layer sector plate 12 and the lower-layer sector plate 13 on the fitting cylinder 13, the central angle of the eccentric block 7 can be changed, thereby changing the vibration force. After the central angle is adjusted in place, the bolts fix the upper-layer sector plate 12, the middle-layer sector plate 11, and the lower-layer sector plate 13 together to form an integral eccentric block 7.

[0044] Among them, the middle-layer sector plate 11 is provided with five through holes D that are evenly spaced along the circumference. The through hole in the middle is aligned with the center of the assembly cylinder. The upper-layer sector plate 12 and the lower-layer sector plate 13 are respectively provided with connection holes E that correspond one-to-one to the through holes D. The through hole D in the middle forms an alignment hole C or is aligned and communicated with the connection hole E to form an alignment hole C. When the middle-layer sector plate 11, the upper-layer sector plate 12, and the lower-layer sector plate 13 overlap, the connection holes E are aligned with the through holes D one-to-one, and the central angle of the eccentric block is the smallest. At this time, the alignment hole C is formed by the through hole D in the middle being aligned and communicated with the connection hole E in the middle. When the upper-layer sector plate 12 and the lower-layer sector plate 13 rotate the same angle to both sides of the middle-layer sector plate 11 respectively, so that the through hole D in the middle is aligned with the connection hole E that is not in the middle, at this time, the alignment hole C is formed by the through hole D in the middle being aligned and communicated with the connection hole E that is not in the middle. When the upper-layer sector plate 12 and the lower-layer sector plate 13 rotate to a position where the through hole D in the middle and the connection hole E are not aligned, at this time, the alignment hole C is the through hole D in the middle. After the lower-layer sector plate 13 and the upper-layer sector plate 12 are rotated and adjusted in place, bolts are passed through the through holes D that are not in the middle and the corresponding connection holes E and tightened to connect the middle-layer sector plate 11, the upper-layer sector plate 12, and the lower-layer sector plate 13 into a whole to form an eccentric block 7.

[0045] Among them, the central angle of the middle-layer sector plate 11 is 70 degrees, the central angle interval between adjacent through holes D is 12.5 degrees, and the interval angles between the through holes D on the side and the edge of the middle-layer sector plate are equal. As Figures 5 to 6 shown, five through holes D are provided on the middle-layer sector plate 11, five connection holes E that correspond one-to-one to the through holes D are provided on both the upper-layer sector plate 12 and the lower-layer sector plate 13, and the central angle interval between adjacent through holes D is 12.5 degrees. As Figure 5 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-layer sector plate 12 and the lower-layer sector plate 13 the same angle to both sides of the middle-layer sector plate 11 respectively, so that the connection hole E is aligned with the through hole D that is not in the middle, the central angle of the eccentric block 7 can be adjusted. As Figure 6As shown, the upper sector plate 12 and the lower sector plate 13 rotate 12.5 degrees respectively to both sides of the middle sector plate 11, adjusting the central angle of the eccentric block to 95 degrees; the upper sector plate 12 and the lower sector plate 13 rotate 25 degrees respectively to both sides of the middle sector plate 11, adjusting the central angle of the eccentric block 7 to 120 degrees; the upper sector plate 12 and the lower sector plate 13 rotate 37.5 degrees respectively to both sides of the middle sector plate 11, adjusting the central angle of the eccentric block 7 to 145 degrees; the upper sector plate 12 and the lower sector plate 13 rotate 50 degrees respectively to both sides of the middle sector plate 11, adjusting the central angle of the eccentric block 7 to 170 degrees. After adjustment, bolts are passed through the non - middle through - hole D and the aligned connection hole E to connect the upper, middle and lower sector plates into a whole, forming the integral eccentric block 7. According to the eccentric distance calculation formula of the eccentric block When the sector radius R of the eccentric block 7, the outer radius r of the ring and the inner radius r0 of the ring are fixed, the eccentric distance 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. Thus, the vibration force can be adjusted by adjusting the central angle of the eccentric block. According to the eccentric distance calculation formula of the eccentric block, the sector radius R of the eccentric block 7, the outer radius r of the ring, the inner radius r0 of the ring and the central angle 2α, the eccentric distance and the centripetal force of the eccentric block 7 with different central angles can be calculated, and the centripetal forces corresponding to different central angles of the eccentric block 7 are marked on the housing 1. During the assembly of the vibrator, the central angle of the eccentric block can be adjusted according to the requirements of vibration picking. When the picking requirements of the vibrator are different, the eccentric block can be disassembled, the central angle of the eccentric block can be adjusted, and then reassembled after adjustment, so that the vibration force of the vibrator meets the picking requirements.

[0046] The present invention also protects an assembly method of the double - eccentric vibrator with the same - direction overlapping arrangement as described above, which is characterized in that it includes the following steps

[0047] The first step is to adjust the central angle of the eccentric block 7 according to the vibration requirements;

[0048] The second step is to assemble the eccentric block 7 and the driven gear 6 on the driven shaft 4, assemble the eccentric block 7 and the driving gear 5 on the driving shaft 3, respectively assemble the driving shaft 3 and the driven shaft 4 in the housing 1 to form the meshing of the driving gear 5 and the driven gear 6, and then install the motor 2 on the housing 1 and connect it to the driving shaft 3.

[0049] The assembly method of the double - eccentric vibrator with the same - direction overlapping arrangement as described above adjusts the vibration force of the eccentric block by adjusting the central angle of the eccentric block 7, enabling the vibrator to be assembled according to different picking requirements, improving the picking rate, thereby enhancing the picking adaptability of the vibrator and meeting the picking requirements of different fruit trees.

[0050] Among them, the second step specifically refers to

[0051] First: Fit the single-slot keyways A of the eccentric block 7 and the driven gear 6 with the mating key B of the driven shaft 4 respectively to assemble the eccentric block 7 and the driven gear 6 on the driven shaft 4, and fit the single-slot keyways A of the eccentric block 7 and the driving gear 5 with the driving shaft 3 respectively to assemble the eccentric block 7 and the driving gear 5 on the driving shaft 3;

[0052] Next, assemble the driving shaft 3 and the driven shaft 4 on the housing 1 respectively, and mesh the tooth top of the driving gear 5 aligned with the single-slot keyway A with the tooth groove of the driven gear 6 aligned with the single-slot keyway A, so that the single-slot keyway A of the driving gear 5, the tooth groove where the driving gear 5 meshes with the driven gear 6, the top tooth where the driven gear meshes with the driving gear 5, and the single-slot keyway A of the driven gear 6 are aligned in sequence in the initial installation state; during the assembly process, only by ensuring the correct relative positions of the single-slot keyway A with the tooth top and the tooth groove can the cooperation between the driving gear 5 and the driven gear 6 be quickly formed, which not only improves the assembly efficiency but also reduces the risk of equipment failure caused by improper assembly. Through the precise positional relationship between the single-slot keyway A and the tooth top and the tooth groove, the meshing between the driving gear and the driven gear is made closer and more stable, thereby improving the transmission efficiency and ensuring that the equipment can make full use of the input power during operation and improving the transmission efficiency;

[0053] After that, pass a long bolt passing through from top to bottom through the oil filling hole 81 and extend it into the alignment hole C of the eccentric block 7 on the driving shaft 3, and pass a long bolt passing through from bottom to top through the oil draining hole 91 and extend it into the alignment hole C of the eccentric block 7 on the driven shaft 4 to position the two eccentric blocks 7; an alignment hole C is opened on the eccentric block 7. During installation, pass a long bolt through the oil draining hole 91 and the alignment hole C of the eccentric block 7 on the driven shaft 4 to fix the initial position of the eccentric block 7 on the driven shaft 4 relative to the housing, and pass another long bolt through the oil filling hole 81 and the alignment hole C of the eccentric block 7 on the driving shaft 3 to fix the initial position of the eccentric block 7 on the driving shaft 3 relative to the housing, so that the driving shaft 2 cannot rotate when the motor is connected, ensuring that the relative position relationship between the upper and lower two eccentric blocks 7 in the initial installation state is set in the same direction, and the two eccentric blocks have no phase angle difference, ensuring the correct initial installation position relationship of the eccentric blocks in the housing;

[0054] Then, install the motor 2 on the housing 1 and connect it to the driving shaft 3, and then remove the two long bolts, and install the corresponding screw plugs on the oil filling hole 81 and the oil draining hole 91 respectively.

[0055] Among them, the first step specifically refers to rotating the lower sector plate 12 and the upper sector plate 13 by the same angle to both sides of the middle sector plate 11 to adjust the central angle of the eccentric block 7. The adjustment method of the central angle of the eccentric block 7 is simple and easy to implement. The central angle of the eccentric block can be adjusted according to the requirements of vibration picking during the assembly of the vibrator, or the central angle of the eccentric block can be adjusted by disassembling the eccentric block when the picking requirements of the vibrator are different, and then reassembled after adjustment to make the vibration force of the vibrator meet the picking requirements.

[0056] Among them, the method for adjusting the central angle of the eccentric block 7 is

[0057] The upper sector plate 12 and the lower sector plate 13 are respectively 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 with bolts to form an eccentric block 7 with a central angle of 95 degrees;

[0058] The upper sector plate 12 and the lower sector plate 13 are respectively 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 with bolts to form an eccentric block 7 with a central angle of 120 degrees;

[0059] The upper sector plate 12 and the lower sector plate 13 are respectively 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 with bolts to form an eccentric block 7 with a central angle of 145 degrees;

[0060] The upper sector plate 12 and the lower sector plate 13 are respectively rotated 50 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 with bolts to form an eccentric block 7 with a central angle of 170 degrees.

[0061] Five through holes D are provided on the middle sector plate 11, and five connecting holes E corresponding to the through holes D one by one are provided on both the upper sector plate 12 and the lower sector plate 13. The central angle between adjacent through holes D is 12.5 degrees. As Figure 5 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 by the same angle to both sides of the middle sector plate 11 to align the connecting hole E with the through hole D that is not in the middle, the central angle of the eccentric block 7 can be adjusted. As Figure 6As shown in the figure, the upper sector plate 12 and the lower sector plate 13 rotate 12.5 degrees to both sides of the middle sector plate 13 respectively, adjusting the central angle of the eccentric block to 95 degrees; the upper sector plate 12 and the lower sector plate 13 rotate 25 degrees to both sides of the middle sector plate 11 respectively, adjusting the central angle of the eccentric block to 120 degrees; the upper sector plate 12 and the lower sector plate 13 rotate 37.5 degrees to both sides of the middle sector plate 11 respectively, adjusting the central angle of the eccentric block to 145 degrees; the upper sector plate 12 and the lower sector plate 13 rotate 50 degrees to both sides of the middle sector plate 11 respectively, adjusting the central angle of the eccentric block to 170 degrees. After adjustment, bolts are passed through the non-middle through hole D and the aligned connection hole E to connect the upper, middle and lower sector plates into a whole, forming an integral eccentric block. According to the eccentric distance calculation formula of the eccentric block When the sector radius R of the eccentric block 7, the outer radius r of the ring and the inner radius r0 of the ring are fixed, the eccentric distance 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, so as to realize the adjustment of the vibration force by adjusting the central angle of the eccentric block. According to the eccentric distance calculation formula of the eccentric block, the sector radius R of the eccentric block 7, the outer radius r of the ring, the inner radius r0 of the ring and the central angle 2α, the eccentric distance and the centripetal force of the eccentric block 7 with different central angles can be calculated, and the centripetal forces corresponding to different central angles of the eccentric block 7 are marked on the housing 1. During the assembly of the vibrator, the central angle of the eccentric block can be adjusted according to the requirements of vibration picking, or when the picking requirements of the vibrator are different, the eccentric block can be disassembled and the central angle of the eccentric block can be adjusted, and then reassembled after adjustment, so that the vibration force of the vibrator meets the picking requirements.

[0062] The technical solutions of the embodiments of the present invention are completely described above in conjunction with the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

Claims

1. The double eccentric vibrator arranged with overlapping in the same direction, including a housing and a motor installed on the housing, wherein a driving shaft and a driven shaft parallel to the driving shaft are installed in the housing, and the driving shaft is connected with the motor, and is characterized in that: The described driving shaft is arranged vertically, and the driven shaft is arranged in parallel obliquely below the driving shaft. The lower end of the driving shaft is assembled with a driving gear, and the upper end of the driven shaft is assembled with a driven gear meshing with the driving gear. Eccentric blocks are respectively assembled on the driving shaft and the driven shaft. The two eccentric blocks are arranged in the same direction and partially overlap in the upper and lower layers, and the central angle of the eccentric block is adjustable.

2. The double eccentric vibrator arranged with co-directional overlap according to claim 1, characterized in that: One-shaped key grooves are opened on the inner circles of the described driving gear, driven gear and eccentric block. The driving shaft and the driven shaft both have mating keys that cooperate with the one-shaped key grooves. The one-shaped key groove of the driving gear is radially aligned with the tooth groove of the driving gear, and the one-shaped key groove of the driven gear is radially aligned with the tooth tip of the driven gear. In the initial installation state, the one-shaped key groove of the driving gear, the tooth groove where the driving gear meshes with the driven gear, the top tooth where the driven gear meshes with the driving gear, and the one-shaped key groove of the driven gear are aligned in sequence.

3. The double eccentric vibrator arranged with co-directional overlap according to claim 2, characterized in that: An oil filling hole is opened on the upper cover plate of the described housing, and an oil drain hole is opened on the lower cover plate. An alignment hole along the vertical direction is opened on the eccentric block. The oil filling hole is coaxially aligned with the alignment hole on the eccentric block of the driving shaft, and the oil drain hole is coaxially aligned with the alignment hole on the eccentric block of the driven shaft.

4. The double eccentric vibrator arranged with coaxial overlap according to claim 3, characterized in that: The described eccentric block includes an assembly cylinder assembled on the driving shaft or the driven shaft, a middle-layer sector plate integrally formed with the assembly cylinder, an upper-layer sector plate sleeved on the assembly cylinder, and a lower-layer sector plate sleeved on the assembly cylinder. The upper-layer sector plate, the middle-layer sector plate and the lower-layer sector plate have the same sector radius and central angle. The upper-layer sector plate, the middle-layer sector plate and the lower-layer sector plate are connected by bolts, and the positions of the upper-layer sector plate and the lower-layer sector plate are adjusted along the circumferential direction to adjust the central angle of the eccentric block.

5. The double eccentric vibrator arranged with coaxial overlap according to claim 4, characterized in that: Five through holes evenly spaced along the circumferential direction are opened on the middle-layer sector plate. The through hole in the middle is aligned with the center of the assembly cylinder. Connecting holes corresponding to the through holes one by one are respectively opened on the upper-layer sector plate and the lower-layer sector plate. The through hole in the middle forms an alignment hole or is aligned and communicated with the connecting hole to form an alignment hole.

6. The double eccentric vibrator arranged with coaxial overlap according to claim 5, characterized in that: The central angle of the described middle-layer sector plate is 70 degrees, the central angle interval between adjacent through holes is 12.5 degrees, and the interval angles between the side through holes and the edge of the middle-layer sector plate are equal.

7. The assembly method of the double eccentric vibrator arranged in the same direction and overlapping as claimed in any one of claims 1 to 6, characterized in that: It includes the following steps The first step is to adjust the central angle of the eccentric block according to the vibration requirement; The second step is to assemble the eccentric block and the driven gear on the driven shaft, assemble the eccentric block and the driving gear on the driving shaft, respectively assemble the driving shaft and the driven shaft in the housing to form the meshing of the driving gear and the driven gear, and then install the motor on the housing and connect it to the driving shaft.

8. The assembling method of the double eccentric vibrators arranged in the same direction and overlapping according to claim 7, characterized in that: The second step specifically refers to Firstly: Assemble the eccentric block and the driven gear on the driven shaft by respectively mating the one-shaped key grooves of the eccentric block and the driven gear with the mating key of the driven shaft, and assemble the eccentric block and the driving gear on the driving shaft by respectively mating the one-shaped key grooves of the eccentric block and the driving gear with the driving shaft; Next, respectively assemble the driving shaft and the driven shaft on the housing, and mesh the tooth tip of the driving gear aligned with the one-shaped key groove and the tooth groove of the driven gear aligned with the one-shaped key groove to form the alignment of the one-shaped key groove of the driving gear, the tooth groove where the driving gear meshes with the driven gear, the top tooth where the driven gear meshes with the driving gear, and the one-shaped key groove of the driven gear in the initial installation state in sequence. After that, a long bolt inserted from top to bottom passes through the fuel filling hole and extends into the alignment hole of the eccentric block on the driving shaft, and a long bolt inserted from bottom to top passes through the oil drain hole and extends into the alignment hole of the eccentric block on the driven shaft to position the two eccentric blocks. Then, install the motor on the housing and connect it to the driving shaft, and then remove the two long bolts and install the corresponding screw plugs on the fuel filling hole and the oil drain hole respectively.

9. The assembling method of the double eccentric vibrator with coaxial overlapping arrangement according to claim 8, characterized in that: Specifically, the first step means that the lower sector plate and the upper sector plate rotate the same angle to the two sides of the middle sector plate respectively to adjust the central angle of the eccentric block.

10. The assembling method of the double eccentric vibrator arranged with co-directional overlap according to claim 9, characterized in that: The method for adjusting the central angle of the eccentric block is as follows. The upper sector plate and the lower sector plate rotate 12.5 degrees to the two sides of the middle sector plate respectively, and then use bolts to fixedly connect the upper sector plate, the middle sector plate and the lower sector plate to form an eccentric block with a central angle of 95 degrees. The upper sector plate and the lower sector plate rotate 25 degrees to the two sides of the middle sector plate respectively, and then use bolts to fixedly connect the upper sector plate, the middle sector plate and the lower sector plate to form an eccentric block with a central angle of 120 degrees. The upper sector plate and the lower sector plate rotate 37.5 degrees to the two sides of the middle sector plate respectively, and then use bolts to fixedly connect the upper sector plate, the middle sector plate and the lower sector plate to form an eccentric block with a central angle of 145 degrees. The upper sector plate and the lower sector plate rotate 50 degrees to the two sides of the middle sector plate respectively, and then use bolts to fixedly connect the upper sector plate, the middle sector plate and the lower sector plate to form an eccentric block with a central angle of 170 degrees.

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