A torsional vibration device and torsional vibration method for a cutter shaft of a tree digging machine

Abstract

The invention discloses a torsional vibration device and a torsional vibration method for a tree digging machine cutter shaft, comprising a vibrator and a rotary digger, wherein the rotary digger is connected to the vibrator; the vibrator drives the tree digging machine cutter shaft to vibrate at high frequency; the rotary digger drives the tree digging machine cutter shaft to rotate; the vibrator comprises a vibration box, a sealing gasket 1, a front end cover, a rubber sealing ring 1, a flange, a rolling bearing 1, a rolling bearing 2, a vibration transmission system, an internal spline shaft sleeve 2, a pin, a rear end cover and a sealing gasket 2; the rotary digger comprises a shell seat, a cover shell, a sealing gasket 3, a rubber sealing ring 2, a bridging mechanism, an external spline rotary digging shaft, a rolling bearing 7, a bearing pressure ring, a bearing end cover, a sealing gasket 4 and a rubber sealing ring 3; the structure of the vibrator and how the above-mentioned structural design realizes the reciprocating high-frequency vibration cutting of the tree digging machine cutter shaft; the structure of the rotary digger and how the above-mentioned structural design realizes the rotation and rotary digging cutting of the tree digging machine cutter shaft, and also realizes the integration of the reciprocating vibration and rotary digging action of the tree digging machine cutter shaft.

Description

Technical Field

[0001] The present invention belongs to the technical field of tree digging machines, and in particular, relates to a torsional vibration device and a torsional vibration method for a cutter shaft of a tree digging machine. Background Art

[0002] Patent number: 2016110399303, patent name: A patent for a tree digging machine, claim 1 discloses "a rotary digger (8) for providing rotational power to the arc-shaped blade (9), and a vibrator (7) for providing vibration power to the arc-shaped blade (9)", and the specification [Paragraph 0039] discloses "the vibrator 7 and the rotary digger 8 enable the arc-shaped blade 9 to rotate and dig while vibrating at a high frequency, thereby achieving cutting of tree roots and soil".

[0003] Patent No.: 201510073739X, Patent Name: Patent for a tree digging machine, claim 1 discloses "a rotary vibration device (10), the rotary vibration device (10) is respectively connected to the hydraulic rotary motor I (11) and the hydraulic rotary motor II (12)", and the specification [Paragraph 0029] discloses "the rotary vibration device 10 causes the semi-ring blade 9 to rotate around the output shaft of the rotary vibration device 10 while performing reciprocating vibration in the circumferential direction, that is, the semi-ring blade 9 receives the rotational force and torsional vibration from the output shaft of the rotary vibration device 10, thereby achieving the cutting of tree roots and soil".

[0004] However, the above patent does not disclose the specific structure of the vibrator and the rotary digger and how to integrate the reciprocating vibration of the tree digger cutter shaft and the rotary digging action, which makes it impossible for technicians in this field to implement and apply the above patent. The vibrator and rotary digger of this application are not specially designed to solve the above problems. Summary of the invention

[0005] The present invention provides a torsional vibration device and a torsional vibration method for a cutter shaft of a tree digger, so as to solve the problems existing in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is: a torsional vibration device and torsional vibration method for a cutter shaft of a tree digging machine, comprising a vibrator and a rotary digging device, wherein the rotary digging device is connected to the vibrator;

[0007] The vibrator drives the cutter shaft of the tree digger to vibrate back and forth at high frequency;

[0008] The rotary digging device drives the cutter shaft of the tree digging machine to rotate;

[0009] The vibrator comprises a vibration box, a sealing gasket 1, a front end cover, a rubber sealing ring 1, a flange, a rolling bearing 1, a rolling bearing 2, a vibration transmission system, an inner spline shaft sleeve 2, a pin, a rear end cover and a sealing gasket 2, wherein the front end cover is sealed and connected to the vibration box through the sealing gasket 1, the outer wall of the rubber sealing ring 1 is connected to the inner wall of the center hole of the front end cover, the inner wall of the rubber sealing ring 1 is connected to the outer wall of the flange, the flange is connected to the front end cover through the rolling bearing 2, the flange is connected to the vibration transmission system through the rolling bearing 1, the vibration transmission system is connected to the vibration box, the inner spline shaft sleeve 2 is inserted into the vibration box and is tightly connected to the vibration box, the pin passes through the inner spline shaft sleeve 2 and is inserted into the vibration box, and the rear end cover is sealed and connected to the vibration box through the sealing gasket 2;

[0010] The rotary drilling device includes a shell seat, a cover shell, a sealing gasket three, a rubber sealing ring two, a bridging mechanism, an external spline rotary drilling shaft, a rolling bearing seven, a bearing pressure ring, a bearing end cover, a sealing gasket four and a rubber sealing ring three. The cover shell is sealed and connected to the shell seat through the sealing gasket three. The bridging mechanism is arranged in the shell seat, and the bridging mechanism is connected to the external spline rotary drilling shaft through a spline. The outer wall of the rubber sealing ring two is connected to the inner wall of the center hole of the cover shell, and the inner wall of the rubber sealing ring two is connected to the outer wall of the bridging mechanism. The external spline rotary drilling shaft is rotatably connected to the shell seat through the rolling bearing seven. The bearing pressure ring is sleeved on the external spline rotary drilling shaft and presses the rolling bearing seven. The bearing end cover is sealed and connected to the shell seat through the sealing gasket four. The outer wall of the rubber sealing ring three is connected to the inner wall of the center hole of the bearing end cover, and the inner wall of the rubber sealing ring three is connected to the outer wall of the external spline rotary drilling shaft.

[0011] Preferably, a left chamber is provided on one side of the vibration box, a right chamber is symmetrically provided on the other side of the vibration box, a middle chamber is provided in the middle of the other side of the vibration box, a bearing seat is provided between the left chamber and the right chamber, and a plurality of pin holes are provided on the outside of the middle chamber.

[0012] Preferably, the vibration transmission system includes a gear shaft, a reversing shaft, a reversing gear, a main shaft, a gear 1 and an eccentric wheel. The gear shaft is rotatably connected to the flange through a rolling bearing 1. Two reversing shafts are provided and are respectively connected to the bearing seats. The reversing gear is rotatably connected to the reversing shaft through a rolling bearing 3. Two main shafts are provided. One end of the main shaft is rotatably connected to the rear end cover through a rolling bearing 4. The other end of the main shaft is rotatably connected to the bearing seat through a rolling bearing 5. Two gears 1 are provided. Gear 1 is coaxially rotatably connected to the main shaft through a key. The eccentric wheel is coaxially rotatably connected to the main shaft. The end face of the gear shaft is provided with a rolling bearing 6.

[0013] Preferably, the eccentric wheel is arranged in the right chamber; the inner spline shaft sleeve 2 is inserted into the middle chamber and is tightly connected to the vibration box; the inner spline shaft sleeve 2 is provided with a plurality of pin holes 2, and the pin passes through the pin hole 2 and then is inserted into the pin hole 1.

[0014] Preferably, the external spline rotary drilling shaft is connected to the second internal spline shaft sleeve via a spline, and the end of the external spline rotary drilling shaft is rotatably connected to the sixth rolling bearing.

[0015] Preferably, the bridging mechanism includes a worm gear, a bridging disk, a symmetrical fan-shaped block, an inner spring seat, an outer spring seat and a compression spring, the worm gear is tightly connected to the end face of the bridging disk, the bridging disk is sleeved on the external spline rotary drilling shaft, the symmetrical fan-shaped block is coaxially rotatably connected to the external spline rotary drilling shaft through a spline, a single fan-shaped block is symmetrically arranged 180 degrees on the bridging disk, a spring placement hole and a concave curved surface are symmetrically arranged 180 degrees on the symmetrical fan-shaped block, a spring placement hole and a concave curved surface are symmetrically arranged 180 degrees on the two single fan-shaped blocks, the inner spring seat is tightly connected to the inside of the spring placement hole, one end of the compression spring extends into the spring placement hole and is sleeved on the inner spring seat, and the other end is sleeved on the outer spring seat, one end of the outer spring seat is a spherical surface, and the spherical surface is in pressing contact with the concave surface.

[0016] Preferably, a hydraulic motor is connected to the shell seat, a worm is provided in the shell seat, and both ends of the worm are rotatably connected to the shell seat through rolling bearings 8, the output shaft of the hydraulic motor and the end of the worm are coaxially rotatably connected through a key, and the lower end of the worm is connected to the shell seat through a lower end cover compression sealing gasket 5.

[0017] A torsional vibration method for a torsional vibration device of a cutter shaft of a tree digging machine specifically comprises the following steps: step S1: starting a vibrator and a rotary digging device at the same time;

[0018] Step S2: The gear shaft rotates at high speed in the flange and the left chamber under the power drive of the tree digger, and the gear shaft drives the reversing gear on the reversing shaft to rotate at high speed in the left chamber at the same time, and the reversing gear drives the gear 1 to rotate with the main shaft at high speed, and the main shaft rotates with the eccentric wheel at high speed in the right chamber;

[0019] Step S3: The reciprocating high-frequency vibration force generated by the high-speed rotation of two symmetrically arranged eccentric wheels in the right chamber is transmitted to the vibration box, and the vibration box transmits the reciprocating high-frequency vibration force to the second internal spline shaft sleeve through the pins;

[0020] Step S4: the inner spline shaft sleeve 2 transmits the reciprocating high-frequency vibration force to the outer spline rotary digging shaft through the spline, so that the outer spline rotary digging shaft drives the cutter shaft of the tree digging machine to reciprocate and vibrate at a high frequency for cutting;

[0021] Step S5: the hydraulic motor drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the bridge plate to rotate, and the single sector blocks symmetrically arranged 180 degrees on the bridge plate rotate together with the bridge plate;

[0022] Step S6: Each single sector block drives the symmetrical sector block to rotate through the inner spring seat, compression spring and outer spring seat, and the symmetrical sector block drives the outer spline rotary digging shaft to rotate through the spline, so that the outer spline rotary digging shaft drives the tree digging machine cutter shaft to rotate and rotary dig for cutting.

[0023] The beneficial effects of adopting the above technical solution are:

[0024] 1. The torsional vibration device for the cutter shaft of a tree digger of the present invention, the working process of the vibrator is as follows: the gear shaft rotates at high speed in the flange and the left chamber under the power drive of the tree digger, and the gear shaft drives the reversing gear on the reversing shaft to rotate at high speed in the left chamber at the same time, and the reversing gear drives gear 1 to rotate with the main shaft at high speed, and the main shaft rotates with the eccentric wheel at high speed in the right chamber; the reciprocating high-frequency vibration force generated by the high-speed rotation of two symmetrically arranged eccentric wheels in the right chamber is transmitted to the vibration box body, and the vibration box body transmits the reciprocating high-frequency vibration force to the inner spline shaft sleeve 2 through the pin; the inner spline shaft sleeve 2 transmits the reciprocating high-frequency vibration force to the outer spline rotary digging shaft through the spline, so that the outer spline rotary digging shaft drives the cutter shaft of the tree digger to reciprocate and vibrate at high frequency for cutting.

[0025] The invention specifically discloses the specific structure of the vibrator and how to achieve reciprocating high-frequency vibration cutting of the cutter shaft of the tree digger through the above structural design.

[0026] 2. The torsional vibration device for the cutter shaft of a tree digger of the present invention, the working process of the rotary digger is: the hydraulic motor drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the bridge disk to rotate, and the single fan-shaped blocks symmetrically arranged 180 degrees on the bridge disk rotate together with the bridge disk; each single fan-shaped block drives the symmetrical fan-shaped blocks to rotate through the inner spring seat, the compression spring and the outer spring seat, and the symmetrical fan-shaped blocks drive the outer spline rotary digging shaft to rotate through the spline, so that the outer spline rotary digging shaft drives the cutter shaft of the tree digger to rotate and cut.

[0027] The invention specifically discloses the specific structure of a rotary digging device and how to realize rotary digging and cutting by rotating the cutter shaft of a tree digging machine through the structural design.

[0028] 3. The present invention specifically discloses the specific structural features of the inner spline shaft sleeve, the outer spline rotary digging shaft and the bridging mechanism and their mutual assembly methods, thereby integrating the reciprocating vibration and rotary digging action of the tree digging machine cutter shaft.

[0029] 4. A middle chamber is provided in the middle of the other side of the vibration box, and a plurality of pin holes are provided on the outer side of the middle chamber; the inner spline shaft sleeve 2 is inserted into the middle chamber and is tightly connected to the vibration box; a plurality of pin holes are provided on the inner spline shaft sleeve 2, and the pins are inserted into the pin holes 1 after passing through the pin holes 2, thereby ensuring the stability and reliability of the transmission of the reciprocating high-frequency vibration force generated by the high-speed rotation of the two symmetrically arranged eccentric wheels in the right chamber.

[0030] A left chamber is provided on one side of the vibration box, a right chamber is symmetrically provided on the other side of the vibration box, a middle chamber is provided in the middle of the other side of the vibration box, and a bearing seat is provided between the left chamber and the right chamber, which ensures the lubrication of the vibration transmission system and the stability of the eccentric wheel supported by the main shaft rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an assembly diagram of the torsional vibration device of the cutter shaft of the tree digging machine of the present invention;

[0032] Figure 2 It’s an exploded view of a vibrator;

[0033] Figure 3 This is an exploded view of the rotary drilling rig;

[0034] Figure 4 It is a schematic diagram of the vibration box structure;

[0035] Figure 5 It is an exploded diagram of the bridge mechanism;

[0036] Figure 6 is a side view of the bridging mechanism;

[0037] in:

[0038] 1. Vibrator; 2. Rotary excavator;

[0039] 10. Vibration box; 11. Sealing gasket 1; 12. Front cover; 13. Rubber sealing ring 1; 14. Flange; 15. Rolling bearing 1; 16. Rolling bearing 2; 17. Vibration transmission system; 18. Internal spline shaft sleeve 2; 19. Pin; 19-1. Rear cover; 19-2. Sealing gasket 2;

[0040] 10-1, left chamber; 10-2, right chamber; 10-3, middle chamber; 10-4, bearing seat; 10-5, pin hole 1;

[0041] 17-1, gear shaft; 17-2, reversing shaft; 17-3, reversing gear; 17-4, main shaft; 17-5, gear one; 17-6, eccentric wheel; 170, rolling bearing three; 171, rolling bearing four; 172, rolling bearing five; 173, rolling bearing six;

[0042] 18-1, pin hole 2;

[0043] 20. Shell seat; 21. Cover shell; 22. Sealing pad three; 23. Rubber sealing ring two; 24. Bridging mechanism; 25. External spline rotary shaft; 26. Rolling bearing seven; 27. Bearing pressure ring; 28. Bearing end cover; 29. ​​Sealing pad four; 29-1. Rubber sealing ring three;

[0044] 24-1, worm gear; 24-2, bridge plate; 24-20, single sector block; 24-3, symmetrical sector block; 24-4, inner spring seat; 24-5, outer spring seat; 24-6, compression spring; 400, spring placement hole; 401, concave surface;

[0045] 200. Hydraulic motor; 201. Worm; 202. Rolling bearing eight; 203. Sealing gasket five; 204. Lower end cover. DETAILED DESCRIPTION

[0046] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and facilitating its implementation.

[0047] like Figures 1 to 6 As shown, the present invention is a torsional vibration device and torsional vibration method for the cutter shaft of a tree digger, which specifically discloses the specific structure of the vibrator and how to achieve reciprocating high-frequency vibration cutting of the cutter shaft of the tree digger through the above structural design; specifically discloses the specific structure of the rotary digger and how to achieve rotating rotary digging and cutting of the cutter shaft of the tree digger through the above structural design, and also realizes the integration of the reciprocating vibration and rotary digging action of the cutter shaft of the tree digger.

[0048] Specifically, Figures 1 to 6 As shown, a torsional vibration device for a cutter shaft of a tree digging machine comprises a vibrator 1 and a rotary digging device 2, wherein the rotary digging device 2 is connected to the vibrator 1;

[0049] The vibrator 1 drives the cutter shaft of the tree digger to vibrate back and forth at high frequency;

[0050] The rotary digging device 2 drives the cutter shaft of the tree digging machine to rotate;

[0051] The vibrator 1 includes a vibration box 10, a sealing gasket 11, a front cover 12, a rubber sealing ring 13, a flange 14, a rolling bearing 15, a rolling bearing 2 16, a vibration transmission system 17, an inner spline shaft sleeve 2 18, a pin 19, a rear end cover 19-1 and a sealing gasket 2 19-2. The front end cover 12 is sealed and connected to the vibration box 10 through the sealing gasket 11, the outer wall of the rubber sealing ring 13 is connected to the inner wall of the center hole of the front end cover 12, and the inner wall of the rubber sealing ring 13 is connected to the flange The outer wall of the flange 14 is connected, the flange 14 is connected to the front end cover 12 through the rolling bearing 16, the flange 14 is connected to the vibration transmission system 17 through the rolling bearing 15, the vibration transmission system 17 is connected to the vibration box 10, the inner spline shaft sleeve 18 is inserted into the vibration box 10 and is tightly connected to the vibration box 10, the pin 19 passes through the inner spline shaft sleeve 18 and is inserted into the vibration box 10, and the rear end cover 19-1 is sealed and connected to the vibration box 10 through the sealing gasket 19-2;

[0052] The rotary drilling device 2 comprises a housing seat 20, a cover 21, a sealing gasket 3 22, a rubber sealing ring 23, a bridging mechanism 24, an external spline rotary drilling shaft 25, a rolling bearing 7 26, a bearing pressure ring 27, a bearing end cover 28, a sealing gasket 4 29 and a rubber sealing ring 3 29-1. The housing 21 is sealed and connected to the housing seat 20 through the sealing gasket 3 22. The bridging mechanism 24 is arranged in the housing seat 20, and the bridging mechanism 24 is connected to the external spline rotary drilling shaft 25 through a spline. The outer wall of the rubber sealing ring 23 is connected to the inner wall of the central hole of the housing 21. The outer wall of the rubber sealing ring 23 is connected to the outer wall of the bridging mechanism 24, the external spline rotary drilling shaft 25 is rotatably connected to the shell seat 20 through a rolling bearing 7 26, the bearing pressure ring 27 is sleeved on the external spline rotary drilling shaft 25, and presses the rolling bearing 7 26, the bearing end cover 28 is sealed and connected to the shell seat 20 through a sealing gasket 4 29, the outer wall of the rubber sealing ring 3 29-1 is connected to the inner wall of the center hole of the bearing end cover 28, and the inner wall of the rubber sealing ring 3 29-1 is connected to the outer wall of the external spline rotary drilling shaft 25.

[0053] A left chamber 10-1 is provided on one side of the vibration box 10, a right chamber 10-2 is symmetrically provided on the other side of the vibration box 10, a middle chamber 10-3 is provided in the middle of the other side of the vibration box 10, a bearing seat 10-4 is provided between the left chamber 10-1 and the right chamber 10-2, and a plurality of pin holes 10-5 are provided on the outer side of the middle chamber 10-3.

[0054] The vibration transmission system 17 includes a gear shaft 17-1, a reversing shaft 17-2, a reversing gear 17-3, a main shaft 17-4, a gear 17-5 and an eccentric wheel 17-6. The gear shaft 17-1 is rotatably connected to the flange 14 through a rolling bearing 15. Two reversing shafts 17-2 are provided and are respectively connected to the bearing seat 10-4. The reversing gear 17-3 is rotatably connected to the reversing shaft 17-2 through a rolling bearing 3 170. The main shaft 17- 4 is provided with two, one end of the main shaft 17-4 is rotatably connected to the rear end cover 19-1 through a rolling bearing four 171, and the other end of the main shaft 17-4 is rotatably connected to the bearing seat 10-4 through a rolling bearing five 172, and there are two gears 17-5, the gear 17-5 is coaxially rotatably connected to the main shaft 17-4 through a key, and the eccentric wheel 17-6 is coaxially rotatably connected to the main shaft 17-4; the end face of the gear shaft 17-1 is provided with a rolling bearing six 173.

[0055] The eccentric wheel 17-6 is arranged in the right chamber 10-2; the inner spline shaft sleeve 18 is inserted into the middle chamber 10-3 and is fastened to the vibration box 10; the inner spline shaft sleeve 18 is provided with a plurality of pin holes 18-1, and the pin 19 passes through the pin hole 18-1 and is inserted into the pin hole 1 10-5.

[0056] The external spline rotary drilling shaft 25 is connected to the internal spline shaft sleeve 18 through a spline, and the end of the external spline rotary drilling shaft 25 is rotatably connected to the rolling bearing 173.

[0057] The bridging mechanism 24 includes a worm gear 24-1, a bridging plate 24-2, a symmetrical sector block 24-3, an inner spring seat 24-4, an outer spring seat 24-5 and a compression spring 24-6. The worm gear 24-1 is tightly connected to the end face of the bridging plate 24-2. The bridging plate 24-2 is sleeved on the external spline rotary digging shaft 25. The symmetrical sector block 24-3 is coaxially rotatably connected with the external spline rotary digging shaft 25 through a spline. A single sector block 24-20 is symmetrically arranged on the bridging plate 24-2 at 180 degrees. The symmetrical sector block 24- 3, a spring placement hole 400 and a concave surface 401 are symmetrically provided at 180 degrees on the two single sector blocks 24-20, a spring placement hole 400 and a concave surface 401 are symmetrically provided at 180 degrees, the inner spring seat 24-4 is tightly connected to the inside of the spring placement hole 400, one end of the compression spring 24-6 extends into the spring placement hole 400 and is sleeved on the inner spring seat 24-4, and the other end is sleeved on the outer spring seat 24-5, one end of the outer spring seat 24-5 is a spherical surface, and the spherical surface is in tight contact with the concave surface 401.

[0058] The housing seat 20 is connected with a hydraulic motor 200, a worm 201 is arranged inside the housing seat 20, and both ends of the worm 201 are rotationally connected with the housing seat 20 via rolling bearings 8 202 respectively, the output shaft of the hydraulic motor 200 is coaxially rotationally connected with the end of the worm 201 via a key, and the lower end of the worm 201 is connected with the housing seat 20 via a lower end cover 204 to compress a sealing gasket 5 203.

[0059] A torsional vibration method for a torsional vibration device of a cutter shaft of a tree digging machine specifically comprises the following steps: step S1: simultaneously starting a vibrator 1 and a rotary digger 2;

[0060] Step S2: The gear shaft 17-1 rotates at high speed in the flange 14 and the left chamber 10-1 under the power of the tree digger. The gear shaft 17-1 drives the reversing gear 17-3 on the reversing shaft 17-2 to rotate at high speed in the left chamber 10-1. The reversing gear 17-3 drives the gear 1 17-5 to rotate with the main shaft 17-4 at high speed. The main shaft 17-4 rotates with the eccentric wheel 17-6 at high speed in the right chamber 10-2.

[0061] Step S3: The reciprocating high-frequency vibration force generated by the high-speed rotation of the two symmetrically arranged eccentric wheels 17-6 in the right chamber 10-2 is transmitted to the vibration box 10, and the vibration box 10 transmits the reciprocating high-frequency vibration force to the inner spline sleeve 18 through the pin 19;

[0062] Step S4: the inner spline shaft sleeve 18 transmits the reciprocating high-frequency vibration force to the outer spline rotary digging shaft 25 through the spline, so that the outer spline rotary digging shaft 25 drives the cutter shaft of the tree digging machine to reciprocate and vibrate at a high frequency for cutting;

[0063] Step S5: The hydraulic motor 200 drives the worm 201 to rotate, the worm 201 drives the worm wheel 24-1 to rotate, the worm wheel 24-1 drives the bridge plate 24-2 to rotate, and the single sector blocks 24-20 symmetrically arranged 180 degrees on the bridge plate 24-2 rotate together with the bridge plate 24-2;

[0064] Step S6: Each single sector block 24-20 drives the symmetrical sector block 24-3 to rotate through the inner spring seat 24-4, the compression spring 24-6 and the outer spring seat 24-5. The symmetrical sector block 24-3 drives the outer spline rotary digging shaft 25 to rotate through the spline, so that the outer spline rotary digging shaft 25 rotates with the tree digging machine cutter shaft to dig and cut.

[0065] The specific working method is described below with specific embodiments:

[0066] Embodiment 1:

[0067] The torsional vibration device for the cutter shaft of a tree digger of the present invention, the working process of the vibrator 1 is as follows: the gear shaft 17-1 rotates at high speed in the flange 14 and the left chamber 10-1 under the power drive of the tree digger, the gear shaft 17-1 simultaneously drives the reversing gear 17-3 on the reversing shaft 17-2 to rotate at high speed in the left chamber 10-1, the reversing gear 17-3 drives the gear 1 17-5 to rotate with the main shaft 17-4 at high speed, and the main shaft 17-4 rotates with the eccentric wheel 17-6 at high speed in the right chamber 10-2; the reciprocating high-frequency vibration force generated by the high-speed rotation of the two symmetrically arranged eccentric wheels 17-6 in the right chamber 10-2 is transmitted to the vibration box 10, and the vibration box 10 transmits the reciprocating high-frequency vibration force to the inner spline shaft sleeve 2 18 through the pin 19; the inner spline shaft sleeve 2 18 transmits the reciprocating high-frequency vibration force to the outer spline rotary digging shaft 25 through the spline, so that the outer spline rotary digging shaft 25 drives the cutter shaft of the tree digger to reciprocate and vibrate at high frequency for cutting.

[0068] The present invention specifically discloses the specific structure of the vibrator 1 and how to achieve reciprocating high-frequency vibration cutting of the cutter shaft of the tree digger through the above-mentioned structural design.

[0069] Embodiment 2:

[0070] The torsional vibration device for the cutter shaft of a tree digger of the present invention, the working process of the rotary digger 2 is: the hydraulic motor 200 drives the worm 201 to rotate, the worm 201 drives the worm wheel 24-1 to rotate, the worm wheel 24-1 drives the bridge plate 24-2 to rotate, and the single sector blocks 24-20 symmetrically arranged 180 degrees on the bridge plate 24-2 rotate together with the bridge plate 24-2; each single sector block 24-20 drives the symmetrical sector block 24-3 to rotate through the inner spring seat 24-4, the compression spring 24-6 and the outer spring seat 24-5, and the symmetrical sector block 24-3 drives the outer spline rotary digging shaft 25 to rotate through the spline, so that the outer spline rotary digging shaft 25 drives the cutter shaft of the tree digger to rotate and dig and cut.

[0071] The invention specifically discloses the specific structure of a rotary digging device and how to realize rotary digging and cutting by rotating the cutter shaft of a tree digging machine through the structural design.

[0072] Embodiment 3:

[0073] On the basis of Example 1 and Example 2, the present invention specifically discloses the specific structural features of the inner spline sleeve 18, the outer spline rotary digging shaft 25 and the bridging mechanism 24 and their mutual assembly methods, thereby integrating the reciprocating vibration and rotary digging action of the tree digging machine cutter shaft.

[0074] Example 4

[0075] On the basis of Example 1, a middle chamber 10-3 is provided in the middle of the other side of the vibration box 10, and a plurality of pin holes 10-5 are provided on the outer side of the middle chamber 10-3; the inner spline sleeve 18 is inserted into the middle chamber 10-3 and is tightly connected to the vibration box 10; a plurality of pin holes 18-1 are provided on the inner spline sleeve 18, and the pin 19 passes through the pin hole 18-1 and is inserted into the pin hole 10-5, thereby ensuring the stability and reliability of the transmission of the reciprocating high-frequency vibration force generated by the high-speed rotation of the two symmetrically arranged eccentric wheels 17-6 in the right chamber 10-2.

[0076] A left chamber 10-1 is provided on one side of the vibration box 10, a right chamber 10-2 is symmetrically provided on the other side of the vibration box 10, a middle chamber 10-3 is provided in the middle of the other side of the vibration box 10, and a bearing seat 10-4 is provided between the left chamber 10-1 and the right chamber 10-2, which ensures the lubrication of the vibration transmission system 17 and the stability of the eccentric wheel 17-6 rotating with the main shaft 17-4.

[0077] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above-mentioned concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A torsional vibration device for a cutter shaft of a tree digging machine, characterized in that: It comprises a vibrator (1) and a rotary drilling device (2), wherein the rotary drilling device (2) is connected to the vibrator (1); The vibrator (1) drives the cutter shaft of the tree digger to vibrate back and forth at high frequency; The rotary digging device (2) drives the cutter shaft of the tree digging machine to rotate; The vibrator (1) comprises a vibration housing (10), a sealing gasket 1 (11), a front end cover (12), a rubber sealing ring 1 (13), a flange (14), a rolling bearing 1 (15), a rolling bearing 2 (16), a vibration transmission system (17), an inner spline shaft sleeve 2 (18), a pin (19), a rear end cover (19-1) and a sealing gasket 2 (19-2), wherein the front end cover (12) is sealedly connected to the vibration housing (10) via the sealing gasket 1 (11), the outer wall of the rubber sealing ring 1 (13) is connected to the inner wall of the center hole of the front end cover (12), and the inner wall of the rubber sealing ring 1 (13) is connected to the flange (14), and the inner wall of the rubber sealing ring 1 (13) is connected to the flange (15). The outer wall of the flange (14) is connected to the front cover (12) through the second rolling bearing (16), the flange (14) is connected to the vibration transmission system (17) through the first rolling bearing (15), the vibration transmission system (17) is connected to the vibration box (10), the second internal spline shaft sleeve (18) is inserted into the vibration box (10) and is tightly connected to the vibration box (10), the pin (19) passes through the second internal spline shaft sleeve (18) and is inserted into the vibration box (10), and the rear cover (19-1) is sealed and connected to the vibration box (10) through the second sealing gasket (19-2); The rotary drilling device (2) comprises a housing seat (20), a cover shell (21), a sealing gasket three (22), a rubber sealing ring two (23), a bridging mechanism (24), an external spline rotary drilling shaft (25), a rolling bearing seven (26), a bearing pressure ring (27), a bearing end cover (28), a sealing gasket four (29) and a rubber sealing ring three (29-1). The cover shell (21) is sealedly connected to the housing seat (20) via the sealing gasket three (22). The bridging mechanism (24) is provided The outer wall of the rubber sealing ring 2 (23) is connected to the inner wall of the center hole of the cover shell (21); the inner wall of the rubber sealing ring 2 (23) is connected to the outer wall of the bridging mechanism (24); the outer splined rotary drilling shaft (25) is rotatably connected to the housing seat (20) through a rolling bearing 7 (26); the bearing pressure ring (27) is sleeved on the outer splined rotary drilling shaft (25) and presses the rolling bearing 7 (26); the bearing end cover (28) is sealed and connected to the housing seat (20) through a sealing gasket 4 (29); the outer wall of the rubber sealing ring 3 (29-1) is connected to the inner wall of the center hole of the bearing end cover (28); and the inner wall of the rubber sealing ring 3 (29-1) is connected to the outer wall of the outer splined rotary drilling shaft (25); A left chamber (10-1) is provided on one side of the vibration box (10), a right chamber (10-2) is symmetrically provided on the other side of the vibration box (10), a middle chamber (10-3) is provided in the middle of the other side of the vibration box (10), a bearing seat (10-4) is provided between the left chamber (10-1) and the right chamber (10-2), and a plurality of pin holes (10-5) are provided on the outer side of the middle chamber (10-3); The vibration transmission system (17) comprises a gear shaft (17-1), a reversing shaft (17-2), a reversing gear (17-3), a main shaft (17-4), a gear one (17-5) and an eccentric wheel (17-6); the gear shaft (17-1) is rotatably connected to a flange (14) via a rolling bearing one (15); two reversing shafts (17-2) are provided and are respectively connected to bearing seats (10-4); the reversing gear (17-3) is rotatably connected to the reversing shaft (17-2) via a rolling bearing three (170); the main shaft (17-4) is rotatably connected to a flange (14) via a rolling bearing one (15); two reversing shafts (17-2) are provided and are respectively connected to bearing seats (10-4); the reversing gear (17-3) is rotatably connected to the reversing shaft (17-2) via a rolling bearing three (170); 7-4) are provided with two, one end of the main shaft (17-4) is rotatably connected to the rear end cover (19-1) through a rolling bearing four (171), and the other end of the main shaft (17-4) is rotatably connected to the bearing seat (10-4) through a rolling bearing five (172), and the gear one (17-5) is provided with two, the gear one (17-5) and the main shaft (17-4) are coaxially rotatably connected through a key, and the eccentric wheel (17-6) and the main shaft (17-4) are coaxially rotatably connected; the end surface of the gear shaft (17-1) is provided with a rolling bearing six (173); The eccentric wheel (17-6) is arranged in the right chamber (10-2); the second inner spline shaft sleeve (18) is inserted into the middle chamber (10-3) and is tightly connected to the vibration box (10); a plurality of second pin holes (18-1) are arranged on the second inner spline shaft sleeve (18); the pin (19) passes through the second pin hole (18-1) and is then inserted into the first pin hole (10-5); The external spline rotary drilling shaft (25) is connected to the second internal spline shaft sleeve (18) via a spline, and the end of the external spline rotary drilling shaft (25) is rotatably connected to the sixth rolling bearing (173); The bridging mechanism (24) comprises a worm gear (24-1), a bridging plate (24-2), a symmetrical sector block (24-3), an inner spring seat (24-4), an outer spring seat (24-5) and a compression spring (24-6); the worm gear (24-1) is tightly connected to the end surface of the bridging plate (24-2); the bridging plate (24-2) is sleeved on an external spline rotary drilling shaft (25); the symmetrical sector block (24-3) is coaxially rotatably connected to the external spline rotary drilling shaft (25) via a spline; a single sector block (24-20) is symmetrically arranged at 180 degrees on the bridging plate (24-2); the symmetrical sector block (24-3) is coaxially rotatably connected to the external spline rotary drilling shaft (25) via a spline; 4-3) is symmetrically provided with a spring placement hole (400) and a concave curved surface (401) at 180 degrees, the two single sector blocks (24-20) are symmetrically provided with a spring placement hole (400) and a concave curved surface (401) at 180 degrees, the inner spring seat (24-4) is tightly connected to the inside of the spring placement hole (400), one end of the compression spring (24-6) extends into the spring placement hole (400) and is sleeved on the inner spring seat (24-4), and the other end is sleeved on the outer spring seat (24-5), one end of the outer spring seat (24-5) is a spherical curved surface, and the spherical curved surface is in tight contact with the concave curved surface (401); The housing seat (20) is connected to a hydraulic motor (200), a worm (201) is provided in the housing seat (20), and both ends of the worm (201) are rotationally connected to the housing seat (20) via rolling bearings (202), an output shaft of the hydraulic motor (200) and an end of the worm (201) are coaxially rotationally connected via a key, and the lower end of the worm (201) is connected to the housing seat (20) via a lower end cover (204) by pressing a sealing gasket (203).

2. A torsional vibration method for a torsional vibration device of a cutter shaft of a tree digging machine according to claim 1, characterized in that: The specific steps include: Step S1: starting the vibrator (1) and the rotary drilling device (2) simultaneously; Step S2: The gear shaft (17-1) is driven by the power of the tree digger to rotate at high speed in the flange (14) and the left chamber (10-1), and the gear shaft (17-1) simultaneously drives the reversing gear (17-3) on the reversing shaft (17-2) to rotate at high speed in the left chamber (10-1), and the reversing gear (17-3) drives gear 1 (17-5) to rotate with the main shaft (17-4) at high speed, and the main shaft (17-4) drives the eccentric wheel (17-6) to rotate at high speed in the right chamber (10-2); Step S3: The two symmetrically arranged eccentric wheels (17-6) rotate at high speed in the right chamber (10-2) to generate a reciprocating high-frequency vibration force which is transmitted to the vibration box (10), and the vibration box (10) transmits the reciprocating high-frequency vibration force to the second internal spline shaft sleeve (18) through the pin (19); Step S4: the second inner spline shaft sleeve (18) transmits the reciprocating high-frequency vibration force to the outer spline rotary digging shaft (25) through the splines, so that the outer spline rotary digging shaft (25) drives the cutter shaft of the tree digging machine to reciprocate and vibrate at a high frequency for cutting; Step S5: the hydraulic motor (200) drives the worm (201) to rotate, the worm (201) drives the worm wheel (24-1) to rotate, the worm wheel (24-1) drives the bridge plate (24-2) to rotate, and the single sector blocks (24-20) symmetrically arranged at 180 degrees on the bridge plate (24-2) rotate together with the bridge plate (24-2); Step S6: Each single sector block (24-20) drives the symmetrical sector block (24-3) to rotate via the inner spring seat (24-4), the compression spring (24-6) and the outer spring seat (24-5); the symmetrical sector block (24-3) drives the outer spline rotary digging shaft (25) to rotate via the spline, so that the outer spline rotary digging shaft (25) drives the tree digging machine cutter shaft to rotate and perform rotary digging and cutting.

Images