Vibration clamping mechanism and eccentric block assembling and positioning jig thereof

Abstract

The vibration clamping mechanism comprises a vibrator and a clamping jaw installed on the vibrator, the vibrator comprises a shell and a motor installed on the shell, and a driving shaft which is arranged in the vertical direction and connected with the motor, a driven shaft which is arranged below the driving shaft in parallel and eccentric blocks which are assembled on the driving shaft and the driven shaft respectively are installed in the shell. A driving gear is assembled at the lower end of the driving shaft, a driven gear meshed with the driving gear is assembled at the upper end of the driven shaft, connecting keys and eccentric blocks are arranged on the driving shaft and the driven shaft respectively, key grooves matched with the connecting keys are formed in the driving gear and the driven gear respectively, and the two eccentric blocks are in the same direction and are partially overlapped in the upper layer and the lower layer. 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 trunk damage caused by poor contact between the clamping jaw and a trunk or improper force application is avoided. The utility model further provides an eccentric block assembling and positioning jig of the vibration clamping mechanism.

Description

Technical Field

[0001] This utility model relates to an eccentric block assembly and positioning fixture and the eccentric block assembly and positioning fixture, belonging to the field of mechanical 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 shaken-down fruit, and a fruit output mechanism for removing the fruit from the collection umbrella. The vibrating clamping mechanism includes a vibrator that generates vibration and grippers mounted on the vibrator that transmit the vibration to the tree trunk. The vibrator uses an eccentric block to generate vibrational force, and the grippers clamp the tree trunk to transmit the vibration. Existing vibratory clamping mechanisms have the following problems:

[0003] 1. Insufficient vibration force and effect of the vibrator affects the mechanical harvesting rate and results in poor harvesting effect, causing some fruits to remain after mechanical vibration harvesting. To improve the harvesting rate, the vibration force of the vibrator can only be increased. To obtain a greater vibration force, an eccentric block with a larger eccentric radius is usually used. However, increasing the size of the eccentric block will lead to an increase in the overall volume of the vibrator, which is not conducive to the arrangement of the vibrator on the harvesting machine.

[0004] 2. When the vibrating clamping mechanism is suspended from the harvester by springs, the clamps cannot ensure a close fit with the trunk when clamping a bent or tilted trunk. The clamping surface is not perpendicular to the trunk, and the vibration force generated by the vibrator cannot be accurately applied to the trunk. Loosening or displacement may occur during vibration, resulting in damage to the trunk and making the vibrator unable to work stably in complex environments.

[0005] 3. The eccentric block is a key component for generating vibration. Deviations in the assembly angle of the eccentric block can lead to unstable vibration effects. In order to achieve the assembly accuracy of the eccentric block and reduce the deviation in the assembly angle, multiple adjustments are required, which is time-consuming and laborious. Utility Model Content

[0006] The vibration clamping mechanism provided by this utility model improves the vibration effect, effectively increasing the harvesting efficiency and harvesting rate of the harvester without significantly increasing the size of the vibrator. It ensures a tight fit between the clamps and the tree trunk with accurate force application, preventing loosening or displacement during vibration. It operates stably in various complex environments, avoiding damage to the tree trunk caused by poor contact between the clamps and the trunk or improper force application. This utility model also provides an eccentric block assembly and positioning fixture for the vibration clamping mechanism.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A vibration clamping mechanism includes a vibrator and grippers mounted on the vibrator for clamping tree trunks. The vibrator includes a housing and a motor mounted on the housing. The housing contains a vertically aligned drive shaft connected to the motor, a driven shaft parallel to and slightly below the drive shaft, and eccentric blocks mounted on the drive shaft and driven shaft respectively. 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. Connecting keys are provided on the drive shaft and driven shaft respectively. Keyways that mate with the connecting keys are provided on the eccentric blocks, drive gear, and driven gear respectively. The two eccentric blocks are aligned in the same direction and partially overlap.

[0009] Preferably, the gripper includes a middle clamping plate fixed on the front side of the housing, a single-layer moving gripper hinged to the right side of the housing, and a double-layer moving gripper hinged to the left side of the housing. The single-layer moving gripper is connected to the right hydraulic cylinder mounted on the right side of the housing, and the double-layer moving gripper is connected to the left hydraulic cylinder mounted on the left side of the housing. The single-layer moving gripper and the double-layer moving gripper cross each other and enclose the middle clamping plate as the right and left hydraulic cylinders extend, and separate as the right and left hydraulic cylinders shorten.

[0010] Preferably, the single-layer moving claw includes a right triangular hinge seat hinged to the housing and hinged to the telescopic end of the right cylinder, and a right clamping plate fixed to the right triangular hinge seat. The double-layer moving claw includes a left triangular hinge seat hinged to the housing and hinged to the telescopic end of the left cylinder, and a left clamping plate fixed to the left triangular hinge seat and arranged in two layers. The right clamping plate enters between the two layers of left clamping plates as the left and right cylinders extend.

[0011] Preferably, the right clamping plate, left clamping plate, and middle clamping plate have the same structure, each including a support base, a multi-layered elastic tube formed by vulcanization of metal tubes and rubber tubes, a wear-resistant rubber plate, and a fixing plate. The wear-resistant rubber plate is wrapped around the multi-layered elastic tube, and both ends of the wear-resistant rubber plate are fixed to the support base by the fixing plate. The support base of the left clamping plate is fixed to the left triangular hinge base, the support base of the right clamping plate is fixed to the right triangular hinge base, and the support base of the middle clamping plate is fixed to the shell.

[0012] Preferably, the support base has a positioning plate one for front-to-back positioning of the multi-layer elastic tube and a positioning plate two for vertical positioning of the multi-layer elastic tube. The positioning plate one is set at both ends of the elastic rubber tube, and the positioning plate two is set on the upper and lower sides of the multi-layer elastic tube, thereby positioning the multi-layer elastic tube on the support base.

[0013] The eccentric block assembly and positioning fixture of the vibration clamping mechanism described above is characterized in that it includes a drive shaft positioning plate and a driven shaft positioning plate. Both the drive shaft positioning plate and the driven shaft positioning plate can be positioned on the housing by bolts. The drive shaft positioning plate forms a circumferential positioning with the drive shaft through a concave-convex fit, and the driven shaft positioning plate forms a circumferential positioning with the driven shaft through a concave-convex fit, so that when the drive shaft and the driven shaft are initially assembled in place, the two eccentric blocks are set in the same direction.

[0014] Preferably, the drive shaft has a drive shaft positioning groove that is axially aligned with the connecting key and radially arranged; the driven shaft has a driven shaft positioning groove that is axially aligned with the connecting key and radially arranged; the drive shaft positioning disk has a drive shaft positioning protrusion that mates with the drive shaft positioning groove; the driven shaft positioning disk has a driven shaft positioning protrusion that mates with the driven shaft positioning groove; both the upper and lower surfaces of the drive shaft positioning disk and the driven shaft positioning disk have drive shaft positioning protrusions.

[0015] The beneficial effects of this utility model are:

[0016] The vibration clamping mechanism of this utility model has a vibrator with its drive shaft arranged vertically and a driven shaft arranged parallel to and diagonally below the drive shaft. The drive gear, driven gear, and eccentric blocks are assembled on the drive and driven shafts via a key and keyway connection. The two eccentric blocks are arranged in the same direction and partially overlap. The 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, which are arranged in the same direction, to rotate in opposite directions. Every 180 degrees of rotation, the two eccentric blocks become aligned in the same direction and partially overlap, causing the vibrations of the two eccentric blocks to combine along the line connecting the centers of the drive and driven shafts into a single vibration. This is equivalent to combining the vibrational forces of the two vertically distributed eccentric blocks. A single vibration force not only effectively enhances the vibration effect, but also the overlapping arrangement of the two eccentric blocks in upper and lower layers effectively reduces 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 rotation of the two eccentric blocks 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, so that the combined vibration force and force couple of the two eccentric blocks change periodically and the phase angles differ by 90 degrees. The alternating formation of the vibration force and force couple of the two eccentric blocks improves the vibration effect, effectively improving the harvesting effect and harvesting rate of the harvester without significantly increasing the size of the vibrator.

[0017] The vibratory clamping mechanism is suspended from the harvester by springs. The double-layer moving claws, the intermediate moving claws, and the middle clamping plate encircle the tree trunk. The clamping plane formed by the middle clamping plate and the tightly fitting claws is perpendicular to the axis of the tree trunk. The drive shaft in the vibrator will become parallel to the axis of the tree trunk as the middle clamping plate is close to the tree trunk. This allows the vibrator to adjust its posture according to the axis of the tree trunk. When clamping a bent or tilted tree trunk, the clamping plane formed by the claws is perpendicular to the axis of the tree trunk, ensuring that the vibration direction of the vibrator remains perpendicular to the axis of the tree trunk. This ensures that the claws are tightly fitted to the tree trunk and that the force is applied accurately. There will be no loosening or displacement during vibration, avoiding damage to the tree trunk caused by poor contact between the claws and the tree trunk or improper force application. At the same time, it ensures the stable operation of the vibrator, allowing it to work stably in various complex environments.

[0018] By cooperating with the active shaft positioning plate and the driven shaft positioning plate, the assembly position and angle of the eccentric block can be precisely controlled. The assembly steps are simple and the operation is convenient, which greatly shortens the assembly time and improves the assembly efficiency of the vibrator. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a vibration clamping mechanism.

[0020] Figure 2 This is a cross-sectional view of the vibration clamping mechanism.

[0021] Figure 3 This is a schematic diagram showing the alternating formation of the same-direction combined vibration force and the opposite-direction force couple formed by the two eccentric blocks during the rotation of the driving gear.

[0022] Figure 4 This is a schematic diagram of the drive shaft.

[0023] Figure 5 This is a schematic diagram of the driven shaft.

[0024] Figure 6 This is a schematic diagram of the meshing of the driving gear and the driven gear.

[0025] Figure 7 This is a top view of the double-layer moving clamp and the single-layer moving clamp in their separated states.

[0026] Figure 8 This is a schematic diagram of a double-layered moving clamp.

[0027] Figure 9 This is a sectional view of the right clamping plate.

[0028] Figure 10 This is a schematic diagram of the support base.

[0029] Figure 11 These are the front and side views of the drive shaft positioning disc.

[0030] Figure 12 The front and side views are used to position the driven axis.

[0031] Figure 13 This is a schematic diagram showing the states when the drive shaft positioning plate is engaged with the drive shaft and the driven shaft positioning plate is engaged with the driven shaft. Detailed Implementation

[0032] The following is combined with Figures 1-13 The embodiments of this utility model will be described in detail below.

[0033] A vibration clamping mechanism includes a vibrator 1 and a gripper 2 mounted on the vibrator 1 for clamping a tree trunk. The vibrator 1 includes a housing 3 and a motor 4 mounted on the housing 3. The mechanism is characterized in that: the housing 3 contains a drive shaft 5 arranged vertically and connected to the motor, a driven shaft 6 arranged parallel to the drive shaft 5 and obliquely below it, and eccentric blocks 7 respectively mounted on the drive shaft 5 and the driven shaft 6. A drive gear 8 is mounted at the lower end of the drive shaft 5, and a driven gear 9 meshing with the drive gear 8 is mounted at the upper end of the driven shaft 6. A connecting key A is provided on the drive shaft 5 and the driven shaft 6 respectively. Keyways B that cooperate with the connecting key A are provided on the eccentric blocks 7, the drive gear 8, and the driven gear 9 respectively. The two eccentric blocks 7 are in the same direction and are partially overlapped.

[0034] The vibration clamping mechanism described above has a vertically oriented drive shaft 5 for the vibrator 1 and a horizontally oriented driven shaft 6 positioned below the drive shaft 5. The drive gear 8, driven gear 9, and eccentric blocks 7 are assembled on the drive shaft 5 and driven shaft 6 via a key A and keyway B. The two eccentric blocks 7 are aligned in the same direction and partially overlap. The motor 4 drives the drive shaft 5 to rotate. The meshing of the drive gear 8 and driven gear 9 causes the drive shaft 5 and driven shaft 6 to rotate in opposite directions, thus causing the two eccentric blocks 7 to rotate in opposite directions. Every 180 degrees of rotation, the two eccentric blocks 7 will form a parallel and partially overlapping structure, causing the vibration of the two eccentric blocks 7 to propagate along the drive shaft. The direction of the line connecting the center of the driven shaft and the center of the driven shaft is combined into a single vibration, which is equivalent to combining the vibration forces of the two vertically distributed eccentric blocks into a single vibration force. This not only effectively increases the vibration force to improve the vibration effect, but also, the double eccentric blocks are arranged in an overlapping upper and lower layer, which effectively reduces the center distance between the drive shaft 5 and the driven shaft 6, thereby reducing the horizontal size of the vibrator. The two eccentric blocks 7 are distributed in upper and lower layers, so that the forces generated by the rotation of the two eccentric blocks 7 are not on the same horizontal plane. When the upper and lower eccentric blocks rotate to the opposite direction, the forces generated by the two eccentric blocks combine into a couple, so that the combined vibration force and couple of the two eccentric blocks change periodically and have a phase angle difference of 90 degrees. Figure 3As 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.

[0035] The gripper 2 includes a middle clamping plate 10 fixed on the front side of the housing, a single-layer moving gripper 11 hinged to the right side of the housing 3, and a double-layer moving gripper 12 hinged to the left side of the housing 3. The single-layer moving gripper 11 is connected to the right hydraulic cylinder 13 mounted on the right side of the housing, and the double-layer moving gripper 12 is connected to the left hydraulic cylinder 14 mounted on the left side of the housing. The single-layer moving gripper 11 and the double-layer moving gripper 12 cross and surround the middle clamping plate 10 as the right hydraulic cylinder 13 and the left hydraulic cylinder 14 extend, and separate as the right hydraulic cylinder 13 and the left hydraulic cylinder 14 shorten. The double-layer moving claw 12 and the single-layer moving claw 11 are respectively hinged to the left and right sides of the shell. The middle clamping plate 10 is fixed to the front side of the shell. The double-layer moving claw 12 swings with the extension and retraction of the left hydraulic cylinder 14, and the single-layer moving claw 11 swings with the extension and retraction of the right hydraulic cylinder 13. When both the left and right hydraulic cylinders are extended, the double-layer moving claw 12 and the single-layer moving claw 11 swing relative to each other to form a cross, and together with the middle clamping plate 10, they encircle and clamp the tree trunk. When both the left and right hydraulic cylinders are shortened, the double-layer moving claw 12 and the single-layer moving claw 11 swing away from each other and separate, releasing the clamping of the tree trunk. The vibratory clamping mechanism is suspended from the harvester by springs. When the double-layer moving claw 12, the intermediate moving claw 11, and the middle clamping plate 10 encircle the tree trunk, the tightness of the middle clamping plate 10 with the trunk makes the clamping plane formed by the claw 2 perpendicular to the axis of the trunk. In other words, the drive shaft 5 in the vibrator will become parallel to the axis of the trunk as the middle clamping plate 10 is close to the trunk. This allows the vibrator to adjust its posture according to the axis of the trunk. When clamping a bent or tilted trunk, the clamping plane formed by the claw is perpendicular to the axis of the trunk, ensuring that the vibration direction of the vibrator remains perpendicular to the axis of the trunk. This ensures that the claw 2 is tightly attached to the trunk and the force is applied accurately, preventing loosening or displacement during vibration. This avoids damage to the trunk caused by poor contact between the claw and the trunk or improper force application, while also ensuring the stable operation of the vibrator, allowing it to work stably in various complex environments.

[0036] The single-layer moving claw 11 includes a right triangular hinge seat 15 hinged to the housing 3 and hinged to the telescopic end of the right oil cylinder 13, and a right clamping plate 16 fixed on the right triangular hinge seat 15. The double-layer moving claw 12 includes a left triangular hinge seat 17 hinged to the housing 1 and hinged to the telescopic end of the left oil cylinder 14, and a left clamping plate 18 fixed on the left triangular hinge seat 17 and arranged in a double layer. The right clamping plate 16 enters between the two layers of left clamping plates 18 as the left and right oil cylinders extend. As can be seen from the attached diagram, the double-layer moving claw 12 has two layers of left clamping plates 18. When the left and right hydraulic cylinders extend, the single-layer moving claw 11 and the double-layer moving claw 12 swing relative to each other, causing the right clamping plate 16 to enter between the two layers of left clamping plates 18, forming a cross between the single-layer moving claw 11 and the double-layer moving claw 12. The double-layer left clamping plates 18 limit the right clamping plate 16, preventing the clamping plates on both sides from separating due to vibration during the clamping process, thus improving the clamping reliability and reducing the frictional movement of the claws on the tree trunk during vibration, thereby reducing damage to the tree trunk.

[0037] The right clamping plate 16, left clamping plate 18, and middle clamping plate 10 have the same structure, each including a support base 19, a multi-layered elastic tube 20 formed by vulcanizing metal and rubber tubes, a wear-resistant rubber plate 21, and a fixing plate 22. The wear-resistant rubber plate 21 is wrapped around the multi-layered elastic tube 20, and both ends of the wear-resistant rubber plate 21 are fixed to the support base 19 by the fixing plate 22. The support base 19 of the left clamping plate 18 is fixed to the left triangular hinge base 17, the support base 19 of the right clamping plate 16 is fixed to the right triangular hinge base 15, and the support base 19 of the middle clamping plate 10 is fixed to the shell 3. The multi-layered elastic tube 20 is formed by vulcanizing metal and rubber layers and has a certain supporting strength. The wear-resistant rubber plate 21 is in contact with the tree trunk, has good wear resistance, is not easily worn, and can extend the service life of the grippers. The support base 19 supports the multi-layered elastic tube 20 and the wear-resistant rubber plate 21, ensuring the structural stability of each clamping plate during clamping vibration, and reducing damage to the tree trunk while ensuring clamping reliability.

[0038] The support base 19 has a positioning plate 23 for front-to-back positioning of the multi-layer elastic tube 20 and a positioning plate 24 for vertical positioning of the multi-layer elastic tube 20. The positioning plate 23 is located at both ends of the elastic rubber tube 20, and the positioning plate 24 is located on the upper and lower sides of the multi-layer elastic tube 20, thus positioning the multi-layer elastic tube 20 on the support base 19. Since the two ends of the wear-resistant rubber plate 21 are fixed to the support base 19 by the fixing plate 22 and wrapped around the multi-layer elastic tube 20, it does not provide positioning for the multi-layer elastic tube 20. To prevent the multi-layer elastic tube 20 from moving or being thrown out of the wear-resistant rubber plate 21 during vibration, the positioning plate 23 and the positioning plate 24 on the support base 19 are used to position the elastic rubber tube 20, thus ensuring the structural stability of the gripper 2 during clamping vibration.

[0039] This utility model also protects an eccentric block assembly and positioning fixture for the vibration clamping mechanism described above, characterized in that: it includes a drive shaft positioning plate 25 and a driven shaft positioning plate 26, both of which can be positioned on the housing 3 by bolts. The drive shaft positioning plate 25 forms a circumferential positioning with the drive shaft 5 through a concave-convex fit, and the driven shaft positioning plate 26 forms a circumferential positioning with the driven shaft 6 through a concave-convex fit, so that when the drive shaft 5 and the driven shaft 6 are initially assembled in place, the two eccentric blocks are set in the same direction. The eccentric block assembly and positioning fixture described above is used during the assembly of the drive shaft 5 and the driven shaft 6. When assembling the drive shaft 5, the drive positioning disc 25 engages with the drive shaft 5 and is bolted to the housing, preventing the drive shaft 5 from rotating and positioning the eccentric block 7 on the drive shaft. Similarly, when assembling the driven shaft 6, the driven positioning disc 26 engages with the driven shaft 6 and is bolted to the housing, preventing the driven shaft from rotating and positioning the eccentric block 7 on the driven shaft. This ensures that the eccentric blocks on the drive shaft 5 and the driven shaft 6 are quickly aligned in the same direction, preventing any phase angle difference and confirming the alignment of the two eccentric blocks. After confirming the position and angle of the eccentric blocks are correct, first remove the drive shaft positioning plate 25 from the drive shaft 5. At this time, the driven shaft positioning plate 26 is fixed on the housing and the drive shaft 5 and driven shaft 6 are engaged, preventing the drive shaft 5 and driven shaft 6 from rotating. The two eccentric blocks 7 can remain in the same direction. Then, install the motor on the housing and connect it to the drive shaft 5. After the motor is installed in place, remove the driven shaft positioning plate 26. Through the cooperation of the drive shaft positioning plate 25 and driven shaft positioning plate 26 with the drive shaft 5 and driven shaft 6, the assembly position and angle of the eccentric blocks can be precisely controlled. The assembly steps are simple and easy to operate, greatly shortening the assembly time and improving the assembly efficiency of the vibrator.

[0040] The drive shaft 5 has a drive shaft positioning groove 51 that is axially aligned with the connecting key A and radially arranged. The driven shaft 6 has a driven shaft positioning groove 61 that is axially aligned with the connecting key A and radially arranged. The drive shaft positioning disk 25 has a drive shaft positioning protrusion 27 that mates with the drive shaft positioning groove 51. The driven shaft positioning disk 26 has a driven shaft positioning protrusion 28 that mates with the driven shaft positioning groove 61. Both the upper and lower surfaces of the drive shaft positioning disk 25 have drive shaft positioning protrusions 27, and both the upper and lower surfaces of the driven shaft positioning disk 26 have driven shaft positioning protrusions 28. The active shaft positioning protrusion 27 on the lower surface of the active positioning disk 25 forms a concave-convex fit with the active shaft positioning groove 51 on the active shaft 5, positioning the eccentric block 7 on the active shaft. The driven shaft positioning protrusion 28 on the lower surface of the driven shaft positioning disk 26 forms a concave-convex fit with the driven shaft positioning groove 61 on the driven shaft 6, positioning the eccentric block 7 on the driven shaft. The active shaft positioning protrusion 27 on the upper surface of the active shaft positioning disk 25 is used for observation of the active shaft positioning protrusion 27 on the lower surface of the active shaft positioning disk 25, and the driven shaft positioning protrusion 28 on the upper surface of the driven shaft positioning disk 26 is used for positioning the driven shaft. By observing the driven shaft positioning protrusion 28 on the lower surface of the positioning disk 26, marking lines can be drawn on the housing to align the two eccentric blocks 7 with the drive shaft positioning groove 51 and the driven shaft positioning groove 61 when they are set in the same direction. The directions of the drive shaft positioning protrusion 27 and the driven shaft positioning protrusion 28 are determined by the marking lines. After the drive shaft positioning protrusion 27 and the driven shaft positioning groove 51 are engaged, and the driven shaft positioning protrusion 28 and the driven shaft positioning groove 61 are engaged, the driven shaft positioning protrusion 27 and the driven shaft positioning protrusion 28 are set in parallel, and the two eccentric blocks 7 are set in the same direction without producing a phase angle difference.

[0041] The technical solutions of the embodiments of this utility model 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 this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A vibration clamping mechanism, comprising a vibrator and grippers mounted on the vibrator for clamping tree trunks, the vibrator comprising a housing and a motor mounted on the housing, characterized in that: The housing contains a drive shaft arranged vertically and connected to a motor, a driven shaft arranged parallel to and diagonally below the drive shaft, and eccentric blocks respectively mounted on the drive shaft and the driven shaft. 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. A connecting key is provided on the drive shaft and the driven shaft respectively. Keyways that cooperate with the connecting key are opened on the eccentric blocks, the drive gear, and the driven gear respectively. The two eccentric blocks are in the same direction and are partially overlapped.

2. The vibration clamping mechanism according to claim 1, characterized in that: The gripper includes a middle clamping plate fixed on the front side of the housing, a single-layer moving gripper hinged to the right side of the housing, and a double-layer moving gripper hinged to the left side of the housing. The single-layer moving gripper is connected to the right hydraulic cylinder mounted on the right side of the housing, and the double-layer moving gripper is connected to the left hydraulic cylinder mounted on the left side of the housing. The single-layer moving gripper and the double-layer moving gripper cross each other and enclose the middle clamping plate as the right hydraulic cylinder and the left hydraulic cylinder extend, and separate as the right hydraulic cylinder and the left hydraulic cylinder shorten.

3. The vibration clamping mechanism according to claim 2, characterized in that: The single-layer moving claw includes a right triangular hinge seat hinged to the housing and hinged to the telescopic end of the right hydraulic cylinder, and a right clamping plate fixed to the right triangular hinge seat. The double-layer moving claw includes a left triangular hinge seat hinged to the housing and hinged to the telescopic end of the left hydraulic cylinder, and a left clamping plate fixed to the left triangular hinge seat and arranged in two layers. The right clamping plate enters between the two layers of left clamping plates as the left and right hydraulic cylinders extend.

4. The vibration clamping mechanism according to claim 3, characterized in that: The right, left, and middle clamps have the same structure, each including a support base, a multi-layered elastic tube formed by vulcanizing metal and rubber tubes, a wear-resistant rubber sheet, and a fixing plate. The wear-resistant rubber sheet is wrapped around the multi-layered elastic tube, and both ends of the wear-resistant rubber sheet are fixed to the support base by the fixing plate. The support base of the left clamp is fixed to the left triangular hinge base, the support base of the right clamp is fixed to the right triangular hinge base, and the support base of the middle clamp is fixed to the shell.

5. The vibration clamping mechanism according to claim 4, characterized in that: The support base has a positioning plate 1 for front and rear positioning of the multi-layer elastic tube and a positioning plate 2 for vertical positioning of the multi-layer elastic tube. The positioning plate 1 is set at both ends of the elastic rubber tube, and the positioning plate 2 is set on the upper and lower sides of the multi-layer elastic tube, thus positioning the multi-layer elastic tube on the support base.

6. The eccentric block assembly and positioning fixture of the vibration clamping mechanism according to any one of claims 1 to 5, characterized in that: It includes a drive shaft positioning plate and a driven shaft positioning plate. Both the drive shaft positioning plate and the driven shaft positioning plate can be positioned on the housing by bolts. The drive shaft positioning plate forms a circumferential positioning with the drive shaft through a concave-convex fit, and the driven shaft positioning plate forms a circumferential positioning with the driven shaft through a concave-convex fit, so that when the drive shaft and the driven shaft are initially assembled, the two eccentric blocks are set in the same direction.

7. The eccentric block assembly and positioning fixture of the vibration clamping mechanism according to claim 6, characterized in that: The drive shaft has a drive shaft positioning groove that is axially aligned with the connecting key and radially arranged. The driven shaft has a driven shaft positioning groove that is axially aligned with the connecting key and radially arranged. The drive shaft positioning plate has a drive shaft positioning protrusion that mates with the drive shaft positioning groove. The driven shaft positioning plate has a driven shaft positioning protrusion that mates with the driven shaft positioning groove. Both the upper and lower surfaces of the drive shaft positioning plate and the driven shaft positioning plate have drive shaft positioning protrusions.

Images