CN216146794U

CN216146794U - Sea-buckthorn trunk shaping and trimming device

Info

Publication number: CN216146794U
Application number: CN202122156772.2U
Authority: CN
Inventors: 于路路; 宋梓铭; 杨帆; 王泽宇; 黄浦; 王宣涵; 张莉
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-04-01
Anticipated expiration: 2031-09-07

Abstract

The utility model discloses a sea-buckthorn trunk shaping and trimming device, which overcomes the problems of low trimming efficiency and high trimming difficulty at present, and comprises a box body, 2 knife saw connecting structures (3) with the same structure and a transmission mechanism (7); the box body is a hollow structural member which is symmetrical in the front-back direction and the left-right direction, the box body comprises a first box body (5) and a second box body (6), the first box body (5) and the second box body (6) are two half box body members which are identical in structure and are split along the front-back symmetrical plane of the box body, and the first box body (5) and the second box body (6) are assembled together by adopting a bolt assembly; the transmission mechanism (7) is arranged in the box body, a first output shaft (8) and a second output shaft (13) of the transmission mechanism (7) respectively extend out from the left upper part and the right upper part of the box body, and a driving shaft (15) of the transmission mechanism (7) extends out from the bottom end of the box body; the 2 knife saw connecting structures (3) are symmetrically and fixedly arranged on the extending ends of the first output shaft (8) and the second output shaft (13).

Description

Sea-buckthorn trunk shaping and trimming device

Technical Field

The utility model relates to a pruning device for sea-buckthorn plants, in particular to a sea-buckthorn trunk shaping and pruning device.

Background

During the development and maturation of the small sea-buckthorn trees, the ground clearance of the trunk root nodes of the plants needs to be manually increased so as to ensure the fruiting rate and reduce the harvesting difficulty; plant plastic means includes handsaw, small-size circular saw piece, chain saw, all adopts the unilateral mode of pruning, and is inefficient, easily appears the operation unstability and leads to the trunk impaired. The transmission is based on a mode of matching straight teeth and helical teeth, the difficulty is to realize single-input double-output transmission in a limited space and ensure the efficiency. No attempt is made to shape and trim the sea buckthorn by adopting a double-knife opposite device as a knife head in China and the world, and the research provides a brand-new device for saving time and cost for the process trimming of the sea buckthorn.

Disclosure of Invention

The utility model aims to solve the technical problems of low pruning efficiency and high pruning difficulty in the prior art and provides a double-knife opposite sea-buckthorn trunk shaping and pruning device.

In order to solve the technical problems, the utility model is realized by adopting the following technical scheme: the sea-buckthorn trunk shaping and trimming device comprises 2 knife saw connecting structures with the same structure, a box body and a transmission mechanism;

the box body comprises a first box body and a second box body, the first box body and the second box body have the same structure and are respectively a nonstandard half shell piece which is bilaterally symmetrical, and the first box body and the second box body are assembled together by adopting bolts; the transmission mechanism is arranged in the box body, a first output shaft and a second output shaft in the transmission mechanism respectively extend out from the left upper part and the right upper part of the box body, and a driving shaft in the transmission mechanism extends out from the bottom end of the box body; the 2 knife saw connecting structures with the same structure are symmetrically and fixedly arranged on the extending ends of the first output shaft and the second output shaft.

The knife saw connecting structure in the technical scheme comprises a back-tooth nut, a circular saw blade, a saw blade gland and a knife saw chassis;

the cutter saw chassis is a disc part, two ends of the disc part are respectively provided with circular grooves with the same structure, the rotation center lines of the circular grooves at the two ends are collinear with the rotation center line of the cutter saw chassis, the center of the circular groove at the 2 end is provided with a ring body which is higher than the groove wall of the groove and is provided with an internal spline through hole at the center, and the internal spline through hole on the ring body has the same structure as an external spline on an output first section shaft on the first output shaft or the second output shaft;

the saw blade gland is a plate-type circular ring structural member, the diameter of the outer circle of the saw blade gland is the same as that of the chassis of the knife saw, a circular through hole is formed in the center of the saw blade gland, and the diameter of the circular through hole in the center of the saw blade gland is larger than that of a screw shaft on the first output shaft or the second output shaft;

the circular saw blade be the standard component, can adopt the circular saw blade of GB/T21680-2008 model, the center department of circular saw blade sets up circular through-hole, requires the aperture d scope of the circular through-hole of circular saw blade: d is more than 8mm and less than 20mm, and the requirement of the outer diameter D of the circular saw blade is as follows: d is less than 150 mm;

the saw blade gland, the circular saw blade and the knife saw chassis are sequentially sleeved on a first output shaft or a second output shaft in the transmission mechanism from top to bottom, the rotating axes of the saw blade gland, the circular saw blade and the knife saw chassis are collinear with the rotating axis of the first output shaft or the second output shaft, the knife saw chassis is arranged on an external spline of a first section of output shaft on the first output shaft or the second output shaft, and the length of an internal spline through hole on the knife saw chassis is greater than that of the external spline on the first section of output shaft; the bottom end face of the ring body on the cutter saw chassis is in contact connection with the outer end face of the third bearing inner ring, the top end face of the ring body on the cutter saw chassis is in contact connection with the inner side end face of the circular saw blade, the saw blade gland covers the circular saw blade, the circular saw blade and the saw blade gland are sleeved on the screw shaft on the first output shaft or the second output shaft, and the reverse tooth nut is sleeved on the screw shaft in the first output shaft or the second output shaft and is screwed for axial positioning.

The box body in the technical scheme is a hollow shell part which is symmetrical front and back and left and right, the first box body and the second box body are 2 half box body parts which are same in structure and are split along the symmetrical plane of the front and back symmetry of the box body, and the first box body and the second box body are fixed into the box body by bolts;

the central point department of box sets up the casing spare that an appearance is provided with cuboid cavity for cuboid's inside center department, outwards and set up curved left side symmetrically on the tank wall respectively about cuboid casing spare, right side tourus, curved left side, the front and back plane of symmetry of right side tourus and cuboid casing spare is coplanar, the radius of curvature of controlling the tourus is 100mm ~ 150mm, the location axis of tourus is 25 ~ 30 pitch arc for a central angle of each output centre of a circle for cuboid casing spare focus about it, curved left side, the central ladder through-hole of right side tourus and the cuboid cavity on the cuboid casing spare intercommunication, curved left side, the central ladder through-hole of right side tourus is 7 section formula shoulder holes respectively: the first section of hole on the arc-shaped left and right circular ring bodies is communicated with a cuboid cavity on the cuboid shell member, wherein the first section of hole is statically matched with the outer ring of the second bearing, the diameters of the first section of hole and the second section of hole are different to form a shaft shoulder, the fifth section of hole is statically matched with the outer ring of the third bearing, and the diameters of the fourth section of hole, the fifth section of hole and the sixth section of hole are different to form a shaft shoulder; the third section of hole is only a cavity; the seventh section of hole is communicated with the outside; the rotation axis of each of the first to seventh holes is on a tangent line of an arc line with a center angle of 25 degrees from the center of gravity of the cuboid shell to the center of the output end, the rotation axis of the first hole is a tangent line at the starting point of the arc line, and the rotation axis of the seventh hole is a tangent line at the ending point of the arc line;

a bottom end circular ring body is downwards arranged on the bottom end box wall of the cuboid shell body, the rotation axis of the bottom end circular ring body and the intersection line of the left and right symmetrical surfaces and the front and back symmetrical surfaces of the cuboid shell body are collinear, a step hole is arranged at the center of the bottom end circular ring body, the rotation axis of the step hole on the bottom end circular ring body and the rotation axis of the bottom end circular ring body are collinear, the step hole on the bottom end circular ring body is communicated with the cuboid cavity on the cuboid shell body, the step hole on the bottom end circular ring body is a 4-section step hole, the 4-section step hole is a vertical first section hole, a vertical second section hole, a vertical third section hole and a vertical fourth section hole from top to bottom in sequence, the vertical second section hole is communicated with the cuboid cavity on the cuboid shell body and is in static fit with a first bearing, the diameters of the vertical first section hole and the vertical second section hole are different to form a shaft shoulder, the diameters of the vertical second section hole and the vertical third section hole are different to form a hole shoulder, the vertical fourth section of hole is a cavity;

a branch fixing groove which is contacted with branches is arranged at the top end of the cuboid-shaped shell part and in the middle of the cuboid-shaped shell part along the left-right direction, the branch fixing groove is a V-shaped groove, the length of the branch fixing groove in the left-right direction is equal to that of the cuboid-shaped shell part in the left-right direction, the front-back thickness of the branch fixing groove is smaller than that of the first box body, and the front-back thickness of the branch fixing groove is evenly distributed at the top ends of the first box body and the second box body;

and a first pair of bolt holes, a second pair of bolt holes and a third pair of bolt holes for installing 2 first bolts, 2 second bolts and 2 third bolts are symmetrically arranged on the box body from top to bottom in a bilateral mode.

In the technical scheme, the diameters of the first pair of bolt holes, the second pair of bolt holes and the third pair of bolt holes are all 5 mm; the circle centers of the first pair of bolt holes are arranged at the centers of the left and right groove walls of the branch fixing groove at the top end of the box body; the centre of a circle of the second pair of bolt holes is located directly over the first section hole of regular semi-cylinder cavity and is 5mm apart from the first section hole roof, the centre of a circle of the third pair of bolt holes is located left, a block extended under the third section hole of right torus is by length 12mm, the width is 6mm, cuboid and diameter that thickness is 5mm are 12mm, the arch cylinder that thickness is 5 mm's half cylinder combination together formed on, its centre of a circle coincides with the semi-cylinder centre of a circle, the thickness of arch cylinder is all divided to left, the bottom of right torus, the bottom surface of arch cylinder one side and the contact plane between two boxes are coplane relation, the gyration axis of three pairs of bolt holes is parallel to each other, and the symmetry plane of symmetry around the perpendicular to box.

The transmission mechanism in the technical scheme further comprises a first universal coupling, a central transmission shaft, a second bevel gear, a second universal coupling, a first bevel gear, a first sleeve, a second sleeve, a third sleeve, a first bearing, 2 second bearings with the same structure and 2 third bearings with the same structure;

the first bearing is sleeved at the shaft shoulder of the vertical second section shaft of the driving shaft and is installed in the vertical second section hole of the box body, the first sleeve is sleeved at the shaft shoulder of the vertical second section shaft of the driving shaft, the lower end face of the first sleeve is contacted with the upper end face of the inner ring of the first bearing, the upper end face of the first sleeve is contacted and positioned with the lower end face of the first bevel gear, the inner spline hole in the first bevel gear is in static fit with the outer spline on the vertical first section shaft of the driving shaft, and the upper side of the first bevel gear is positioned according to the static fit of the outer spline and the fit relation with the second bevel gear; the bottom end face of the first bearing outer bearing ring is in contact with a hole shoulder formed by the vertical third section of hole and the vertical second section of hole due to the diameter difference; 2 second bearings with the same structure are respectively sleeved at a central second section shaft and a central sixth section shaft of the central transmission shaft and are arranged in first section holes of a left annular body and a right annular body of the box body; a third sleeve is sleeved on a central fifth-section shaft of the central transmission shaft, the left end face of the third sleeve is contacted with the right end face of a second bevel gear, the right end face of the third sleeve is contacted with the left end face of an inner ring of a second bearing, an inner spline hole on the second bevel gear is in static fit with an outer spline on a central fourth-section shaft on the central transmission shaft, 2 third bearings with the same structure are sleeved on shaft shoulders of output second-section shafts of the first output shaft and the second output shaft and are arranged in fifth-section holes of a left ring body and a right ring body of the box body, the inner side end faces of outer rings of the two third bearings with the same structure are contacted with the outer side end faces of hole shoulders at the connection positions of the fourth-section holes and the fifth-section holes, and the outer side end faces of the outer rings are contacted with the inner side end faces of hole shoulders at the connection positions of the fifth-section holes and the sixth-section holes; the first section of central shaft and the seventh section of central shaft on the left and right ends of the central transmission shaft are respectively in close fit connection with the internal splines at the inward ends of the first universal coupling and the second universal coupling through screws on the first section of central shaft and the seventh section of central shaft; and an internal spline on a vertical third section shaft on the driving shaft is connected with an external power shaft in a matching way.

The central transmission shaft in the technical scheme is a cylindrical straight rod seven-section stepped shaft, and sequentially comprises a central first section shaft, a central second section shaft, a central third section shaft, a central fourth section shaft, a central fifth section shaft, a central sixth section shaft and a central seventh section shaft from left to right; the central first section shaft and the central seventh section shaft have the same structural size; the central second-section shaft and the central sixth-section shaft have the same structure; the diameters of the central third section shaft and the central fifth section shaft are the same, the diameters of the central third section shaft and the central fifth section shaft are larger than the diameters of the central second section shaft and the central sixth section shaft, and shaft shoulders are formed between the central third section shaft and the central second section shaft as well as between the central fifth section shaft and the central sixth section shaft; the central fifth section shaft is matched with the third sleeve; the diameter of the central third section shaft is smaller than that of the central fourth section shaft; the central first section shaft and the central seventh section shaft are provided with external splines, and the central fourth section shaft is provided with external splines for mounting a second bevel gear; the central sixth section of shaft is in static fit connection with the inner ring of the second bearing, the central second section of shaft is in static fit connection with the inner ring of the second bearing, and the central second section of shaft is in sliding connection with a second sleeve arranged between the second bearing and a shaft shoulder formed by the central second section of shaft and the central third section of shaft.

The first output shaft in the technical scheme is composed of a screw shaft, a first output section shaft, a second output section shaft and a third output section shaft; the diameters of the screw shaft, the first output section shaft, the second output section shaft and the third output section shaft are sequentially increased from end to form a whole, the rotation axes of the screw shaft, the first output section shaft, the second output section shaft and the third output section shaft are collinear, and the screw shaft is provided with threads for installing a reverse-tooth nut to fixedly install a circular saw blade and a saw blade gland on the screw shaft; the first output section shaft is provided with an external spline for mounting a cutter saw chassis, and the second output section shaft is in static fit with the inner ring of the third bearing; an external spline for connecting with the first universal coupling or the second universal coupling is arranged on the output third section shaft; the first output shaft and the second output shaft have the same structure.

In the technical scheme, the driving shaft is a three-section stepped shaft and sequentially comprises a vertical first section shaft, a vertical second section shaft and a vertical third section shaft from top to bottom; the diameter is from big to little from top to bottom, and vertical first section axle is provided with the external splines that are used for being connected with first bevel gear, and vertical third section axle is provided with the driving shaft internal spline that is used for being connected with the power input part cooperation, and the diameter of vertical second section axle equals and adopts quiet cooperation to connect with the bearing inner ring internal diameter of the first bearing of outfitting, is sliding fit connection between vertical second section axle and the first sleeve of installing above that.

Compared with the prior art, the utility model has the beneficial effects that:

1. the sea-buckthorn trunk reshaping and trimming device provided by the utility model adopts a double-cutter clamping structure, so that branches on two sides of a branch trunk can be trimmed at the same time, the single trimming amount is two times of that of a single cutter, and the streamlined trimming operation can be realized.

2. According to the sea-buckthorn trunk reshaping and pruning device, through a sea-buckthorn branch mechanical property test, the cutting-in angle of a blade is guaranteed to be 70-90 degrees with the axis of a pruned branch, the cutting is most labor-saving, and the flatness of a cut surface can be guaranteed, so that a comprehensive operator can judge by holding factors such as height, ground angle and the like, a single-side cutter of the device and the axis of a main transmission shaft form an angle of 25-30 degrees anticlockwise, and trunk branches with different diameters can be pruned only by manually adjusting the cutting-in angle.

3. The parts adopted in the sea-buckthorn trunk shaping and trimming device are mostly standard parts, the cost is low, and the application range is wide.

Drawings

The utility model is further described with reference to the accompanying drawings in which:

fig. 1 is an axonometric projection view of the structure of the sea-buckthorn trunk pruning device according to the present invention;

fig. 2 is an axonometric projection view of the transmission mechanism structure adopted in the sea-buckthorn trunk shaping and pruning device of the present invention;

FIG. 3 is an exploded perspective view of the trunk structure of the seabuckthorn according to the present invention;

fig. 4 is an axial side projection view of the inner structure of the sea buckthorn trunk pruning device after the second box body and the right saw blade are removed;

FIG. 5 is a schematic exploded view of a knife saw connection structure of a sea buckthorn trunk pruning device according to the present invention;

fig. 6 is an axonometric projection view of a central transmission shaft structure adopted by the sea-buckthorn trunk pruning device according to the present invention;

FIG. 7 is a perspective view of the driving shaft structure used in the device for shaping and trimming the sea buckthorn trunk according to the present invention;

fig. 8 is an axonometric projection view of a first output shaft structure adopted in the sea buckthorn trunk shaping and pruning device of the present invention;

in the figure: 1. the first bolt, 2, the second bolt, 3, the knife saw connecting structure, 4, the third bolt, 5, the first box body, 6, the second box body, 7, the transmission mechanism, 8, the first output shaft, 9, the first universal coupling, 10, the central transmission shaft, 11, the second bevel gear, 12, the second universal coupling, 13, the second output shaft, 14, the first bevel gear, 15, the driving shaft, 16, the vertical first section hole, 17, the first section hole, 18, the branch fixing groove, 19, the fifth section hole, 20, the second sleeve, 21, the third sleeve, 22, the third bearing, 23, the second bearing, 24, the first sleeve, 25, the first bearing, 26, the counter-thread nut, 27, the saw blade gland, 28, the circular saw blade, 29, the knife chassis saw, 30, the central fourth section shaft, 31, the central seventh section shaft, 32, the vertical third section shaft, 33, the vertical first section shaft, 34, the screw shaft, 35. and outputting a first section shaft, 36, and outputting a third section shaft.

Detailed Description

The utility model is described in detail below with reference to the attached drawing figures:

referring to fig. 1 to 4, the sea buckthorn trunk reshaping and pruning device of the present invention includes a box, 2 knife saw connecting structures 3 with the same structure and a transmission mechanism 7.

Referring to fig. 3, the case includes a first case 5 and a second case 6;

the first box body 5 and the second box body 6 have the same structure and are non-standard cast half shell parts which are symmetrical left and right.

The first box body 5 and the second box body 6 are spliced together to form a box body which is symmetrical in front, back, left and right directions by inserting two first bolts 1(GB70_ M5x30), two second bolts 2(GB70_ M5x40) and two third bolts 4(GB5783_ M5x12) into corresponding threaded holes.

After first box 5, the 6 amalgamations of second box are in the same place, box overall structure shape is: the central point department of box sets up the casing spare that an appearance is provided with the cuboid cavity for cuboid's inside center department, outwards and set up an curved left side respectively on the tank wall about cuboid casing spare symmetrically, right side ring body, curved left side, the front and back symmetric surface coplane of right side ring body and cuboid casing spare, the radius of curvature of controlling the ring body is 100 + 150mm, its location axis is cuboid casing spare focus to a central angle of each output centre of a circle be 25 ~ 30 pitch arc, curved left side, the central ladder through-hole of right side ring body and the cuboid cavity intercommunication on the cuboid casing spare, curved left side, the central ladder through-hole of right side ring body is 7 section formula shoulder holes respectively: the first section of hole 17, the second section of hole, the third section of hole, the fourth section of hole, the fifth section of hole 19, the sixth section of hole and the seventh section of hole are arranged from inside to outside in sequence, the first section of hole on the arc-shaped left and right circular ring bodies is communicated with the cuboid-shaped cavity on the cuboid-shaped shell body, wherein the first section of hole 17 is matched with the outer ring of the second bearing 23, the diameters of the first section of hole 17 and the second section of hole are different to form a shaft shoulder, the fifth section of hole 19 is matched with the outer ring of the third bearing 22, and the diameters of the fourth section of hole, the fifth section of hole and the sixth section of hole are different to form a shaft shoulder; the third section of hole is only a cavity, and the seventh section of hole is communicated with the outside; the rotation axes of all the first to seventh sections of holes are on the tangent line of an arc line with the central angle of 25-30 degrees and the curvature radius of 100-150 mm from the center of gravity of the cuboid shell to the center of the output end, the rotation axis of the first section of holes is the tangent line at the starting point of the arc line, and the rotation axis of the seventh section of holes is the tangent line at the ending point of the arc line.

A bottom end circular ring body is downwards arranged on the bottom end box wall of the cuboid shell body, the rotation axis of the bottom end circular ring body and the intersection line of the left and right symmetrical surfaces and the front and back symmetrical surfaces of the cuboid shell body are collinear, a stepped hole is arranged at the center of the bottom end circular ring body, the rotation axis of the stepped hole on the bottom end circular ring body is collinear with the rotation axis of the bottom end circular ring body, the stepped hole on the bottom end circular ring body is communicated with the cuboid cavity on the cuboid shell body, the stepped hole on the bottom end circular ring body is a 4-section stepped hole, the 4-section stepped hole is a vertical first section hole, a vertical second section hole 16, a vertical third section hole and a vertical fourth section hole from top to bottom in sequence, the vertical second section hole 16 is communicated with the cuboid cavity on the cuboid shell body and is statically matched with the outer ring of the first bearing 25,

a branch fixing groove 18 is formed in the middle of the top end of the cuboid-shaped shell piece in the left-right direction, the branch fixing groove 18 is a contact end of the box body and a branch and is of a V-shaped groove structure, the length of the branch fixing groove 18 in the left-right direction is equal to that of the cuboid-shaped shell piece in the left-right direction, the front-back thickness of the branch fixing groove 18 is smaller than that of the first box body 5, and the front-back thickness of the branch fixing groove 18 is evenly distributed on the top ends of the first box body 5 and the second box body 6.

The box bodies (the first box body 5 and the second box body 6) are symmetrically provided with a first pair of bolt holes, a second pair of bolt holes and a third pair of bolt holes, wherein the first pair of bolt holes, the second pair of bolt holes and the third pair of bolt holes are used for installing 2 first bolts 1, 2

second bolts

2 and 2 third bolts 4 from top to bottom in a left-right mode, and the diameters of the first pair of bolt holes, the second pair of bolt holes and the third pair of bolt holes are 5 mm; the 2 first bolts 1, the 2 second bolts 2 and the 2 third bolts 4 are respectively and symmetrically arranged in the first pair of bolt holes, the second pair of bolt holes and the third pair of bolt holes from top to bottom; the circle centers of the first pair of bolt holes are arranged at the centers of the left and right groove walls of the branch fixing groove 18 at the top end of the box body, and the circle centers of the second pair of bolt holes are positioned right above the first section hole 17 of the regular semi-cylindrical cavity and are 5mm away from the top wall of the first section hole 17; the circle centers of the third pair of bolt holes are positioned on an arch cylinder formed by combining a cuboid with the length of 12mm, the width of 6mm and the thickness of 5mm and a semi-cylinder with the diameter of 12mm and the thickness of 5mm, wherein the cuboid with the length of 12mm, the width of 6mm and the thickness of 5mm extend out of the arch cylinder under the third section of the left and right annular bodies, the circle centers of the arch cylinder and the semi-cylinder are superposed, the thickness of the arch cylinder is uniformly distributed to the bottom ends of the left and right annular bodies, the bottom surface of one side of the arch cylinder and a contact plane between the two box bodies are in a coplanar relationship, and the rotation axes of the three pairs of bolt holes are parallel to each other and are perpendicular to symmetrical planes of the front and back symmetry of the box bodies; a first box body 5 and a second box body 6 are connected into a box body by adopting a first bolt 1, a second bolt 2 and a third bolt 4 in a pair respectively.

Referring to fig. 2 and 4, the transmission mechanism 7 includes a first output shaft 8, a first universal coupling 9, a central transmission shaft 10, a second bevel gear 11, a second universal coupling 12, a second output shaft 13, a first bevel gear 14, a driving shaft 15, a first sleeve 24, a second sleeve 20, a third sleeve 21, a first bearing 25, 2 second bearings 23 with the same structure and 2 third bearings 22 with the same structure;

referring to fig. 6, the central transmission shaft 10 is a seven-segment stepped shaft, and includes, from left to right, a central first segment shaft, a central second segment shaft, a central third segment shaft, a central fourth segment shaft 30, a central fifth segment shaft, a central sixth segment shaft, and a central seventh segment shaft 31; the central first-stage shaft and the central seventh-stage shaft 31 have the same structural size; the central second-section shaft and the central sixth-section shaft have the same structure; the diameters of the central third section shaft and the central fifth section shaft are the same, and are larger than the central second section shaft and the central sixth section shaft to respectively form a shaft shoulder; the third sleeve 21 is arranged on the central fifth-section shaft and is connected with the central fifth-section shaft in a sliding manner; the diameter of the central third section shaft is slightly smaller than that of the central fourth section shaft 30; the central first section shaft and the central seventh section shaft 31 are provided with external splines, and the central fourth section shaft 30 is provided with external splines for mounting the second bevel gear 11; the central second section shaft and the central sixth section shaft are cylinders, the central sixth section shaft is in static fit connection with an inner ring of the second bearing 23, the central second section shaft is in static fit connection with an inner ring of the second bearing 23, and the second sleeve 20 is clamped between the second bearing 23 and a shaft shoulder formed by the central second section shaft and the central third section shaft and is in sliding connection with the central second section shaft.

Referring to fig. 7, the driving shaft 15 is a three-section stepped shaft, and sequentially comprises a vertical first section shaft 33, a vertical second section shaft and a vertical third section shaft 32 from top to bottom; the diameter is from big to little from top to bottom, and vertical first section axle 33 is provided with the external splines that are used for being connected with first bevel gear 14, and vertical third section axle 32 is provided with the driving shaft internal spline that is used for with the power input part complex, and the diameter of vertical second section axle equals and adopts the quiet cooperation to connect with the bearing inner ring internal diameter of the first bearing 25 of outfitting, and first sleeve 24 presss from both sides between the first bearing 25 and the shaft shoulder that vertical first section axle and vertical second section axle formed to with vertical second section axle sliding connection.

Referring to fig. 2 and 7, the first bevel gear 14 is engaged with the second bevel gear 11, the gear teeth of the first bevel gear 14 and the second bevel gear 11 have the same module, and a splined hole fitted with an external spline on the vertical first section shaft 33 is formed in the center of the first bevel gear 14.

Referring to fig. 2 and 7, the second bevel gear 11 is engaged with the first bevel gear 14, the gear teeth modules of the second bevel gear 11 and the first bevel gear 14 are equal, and the center of the second bevel gear 11 is provided with a spline hole fitted with an external spline on the central fourth section shaft 30 on the central transmission shaft 10.

Referring to fig. 2, 6 and 8, the first universal coupling 9 and the second universal coupling 12 both adopt a type 00G universal coupling, spline blind holes fitted with the external splines on the central first section shaft and the central seventh section shaft 31 on the central transmission shaft 10 and the external splines on the output third section shaft 36 on the first output shaft 8 or the second output shaft 13 are respectively arranged at both ends of the first universal coupling 9 and the second universal coupling 12, and a threaded hole with a screw is respectively arranged at the middle position of the shaft section corresponding to the external part of the internal spline of the universal coupling 9 and the universal coupling 12.

Referring to fig. 2 to 4, the first bearing 25 is a bearing of type 6002 (the same type is applicable), the second bearing 23 is a bearing of type 6001, and the third bearing 22 is a bearing of type 6000; adopt first bearing 25 to install driving shaft 15 vertically in the central through hole of the bottom tourus of cuboid shape casing spare lower extreme, adopt 2 second bearings 23 that the structure is the same to install central transmission shaft 10 horizontally in cuboid shape casing spare above driving shaft 15, adopt 2 third bearings 22 that the structure is the same to install first output shaft 8 and second output shaft 13 bilateral symmetry in with cuboid shape casing spare left tourus and right tourus of tank wall symmetric connection.

Referring to fig. 8, the first output shaft 8 and the second output shaft 13 are shafts having the same structure, and viewed from one side of the screw shaft 34 to the other side, the screw shaft 34, the first output section shaft 35, the second output section shaft, and the third output section shaft 36 are sequentially provided; the shaft diameters increase sequentially from the screw shaft 34 to the output third stage; one end of the screw shaft 34 is connected with one end of the output first-stage shaft 35 into a whole, the screw shaft 34 and the rotation axis of the output first-stage shaft 35 are collinear, the screw shaft 34 is provided with threads for installing the inverse-tooth nut 26 to install the circular saw blade 28 and the saw blade gland 27 on the screw shaft 34; the output first section shaft 35 is provided with an external spline for mounting the knife saw chassis 29; the output second section shaft is in static fit with the inner ring of the third bearing 22; the output third section shaft 36 is provided with an external spline for connecting with the first universal coupling 9 or the second universal coupling 12.

Referring to fig. 5 and 8, the saber saw connecting structure 3 includes a counter nut 26, a saw blade pressing cover 27, a circular saw blade 28 and a saber saw base 29;

the overall shape of the knife saw chassis 29 is a disk part with two ends respectively provided with circular grooves with the same structure, the rotation center lines of the circular grooves at the two ends are collinear with the rotation center line of the knife saw chassis 29, and the centers of the 2 circular grooves are provided with a ring body which is higher than the groove wall of the groove and is provided with an internal spline through hole; one end face of the annular body is in contact with the outer end face of the inner ring of the third bearing 22, so that the circular saw blade 28, the knife saw chassis 29 and the third bearing 22 can rotate together and cannot interfere with the box body; the other end face of the circular ring body is in contact connection with the inner side end face of the circular saw blade 28.

The saw blade gland 27 is a plate-type circular ring structural member, the diameter of the outer circle of the saw blade gland 27 is the same as that of the knife saw chassis 29, and the diameter of the inner hole of the saw blade gland 27 is slightly larger than that of the screw shaft in the second output shaft 13 so as to clamp the circular saw blade 28.

The inverse-tooth nut 26 is a standard component and adopts an inverse-tooth nut with the model number of M8 multiplied by 12;

the circular saw blade 28 is a standard component, can adopt the circular saw blade that arbitrary model is in the market, requires the inside circle diameter range of saw bit: the diameter of the inner circle is more than 8 and less than 20, and the central hole of the circular saw blade 28 is a unthreaded hole;

the saw blade gland 27, the circular saw blade 28 and the knife saw chassis 29 are sequentially sleeved on the first output shaft 8 or the second output shaft 13 in the transmission mechanism 7 from top to bottom, the rotation axes of the saw blade gland 27, the circular saw blade 28 and the knife saw chassis 29 are collinear with the rotation axis of the first output shaft 8 or the second output shaft 13, and the knife saw chassis 29 is arranged on an external spline of the first section shaft 35 on the first output shaft 8 or the second output shaft 13 and is longer than the external spline on the first section shaft 35; the bottom end face of the circular ring body on the cutter saw chassis 29 is in contact connection with the outer end face of the inner ring of the third bearing 22, the top end face of the circular ring body on the cutter saw chassis 29 is in contact connection with the inner end face of the circular saw blade 28, the saw blade gland 27 covers the circular saw blade 28, the circular saw blade 28 and the saw blade gland 27 are sleeved on the screw shaft 34 on the first output shaft 8 or the second output shaft 13, the anti-thread nut 26 is rotatably installed on the external thread on the screw shaft 34 in the second output shaft 13 or the first output shaft 8 in the transmission mechanism 7, the saw blade gland 27 and the circular saw blade 28 are screwed on the cutter saw chassis 29, the inner end face of the outer ring of the third bearing 22, the outer end face of the hole shoulder formed by the diameter difference between the fourth section hole and the fifth section hole are in contact connection and are axially positioned, and the axial positioning of the cutter saw connecting structure 3 is completed.

Referring to fig. 4, the first sleeve 24, the second sleeve 20 and the third sleeve 21 are circular ring-shaped structural members, the inner diameter of the first sleeve 24 is equal to the diameter of the vertical second section shaft on the driving shaft 15 sleeved with the first sleeve, and the first sleeve and the second sleeve are in sliding connection; the inner diameters of the second sleeve 20 and the third sleeve 21 are equal to the diameters of a central second section shaft and a central sixth section shaft on the central transmission shaft 10 sleeved by the second sleeve 20 and the third sleeve 21, and the second sleeve 20, the third sleeve 21 and the central transmission shaft 10 are in sliding connection; the first sleeve 24, the second sleeve 20 and the third sleeve 21 respectively play a role in positioning the first bearing 25 and the 2 second bearings 23 with the same structure and are non-standard parts.

Referring to fig. 2 to 4, a first bearing 25 is sleeved on a shaft shoulder of a vertical second section shaft of the driving shaft 15 and is installed in a vertical second section hole 16 of the box body, a first sleeve 24 is sleeved on the vertical second section shaft shoulder of the driving shaft 15, the lower end face of the first sleeve is contacted with the upper end face of an inner ring of the first bearing 25, the upper end face of the first sleeve is contacted and positioned with the lower end face of the first bevel gear 14, an inner spline hole of the first bevel gear 14 is in static fit with an outer spline on a vertical first section shaft 33 on the driving shaft 15, and the upper side of the first bevel gear 14 is positioned according to the static fit of the outer spline and the fit relation with the second bevel gear 11; the bottom end surface of the outer bearing ring of the first bearing 25 is in contact with a hole shoulder formed by the diameter difference of the vertical third section hole and the vertical second section hole 16; 2 second bearings 23 with the same structure are respectively sleeved at a central second section shaft and a central sixth section shaft of the central transmission shaft 10 and are arranged in first section holes 17 of a left annular body and a right annular body which are symmetrically arranged in the box body, a second sleeve 20 is sleeved on the central second section shaft of the central transmission shaft 10, the left end surface of the second sleeve 20 is contacted with the right end surface of an inner ring of the left second bearing 23, and the right end surface is contacted with the left end surface of a shaft shoulder formed at the connecting part of the central second section shaft and the central third section shaft of the central transmission shaft 10; the third sleeve 21 is sleeved on the fifth central section shaft of the central transmission shaft 10, the right end surface of the third sleeve is contacted with the left end surface of the inner ring of the second bearing 23, the left end surface of the third sleeve is contacted with the right end surface of the second bevel gear 11 and enables the right side of the second bevel gear 11 to be positioned, an inner spline hole on the second bevel gear 11 is matched with an outer spline on the fourth central section shaft 30 on the central transmission shaft 10, and the left end surface of the second bevel gear 11 is positioned according to the static fit of the outer spline and the matching relation of the first bevel gear 14; 2 third bearings 22 with the same structure are sleeved at the shaft shoulders of the second section of output shaft of the first output shaft 8 and the second output shaft 13 and are installed in fifth section holes 19 of the left and right annular bodies of the box body, the inner side end faces of the outer rings of the two third bearings 22 with the same structure are in contact with the outer side end faces of the shaft shoulders at the joint of the fourth section holes and the fifth section holes 19, and the outer side end faces of the outer rings are in contact with the inner side end faces of the hole shoulders at the joint of the fifth section holes 19 and the sixth section holes; the outer splines on the central first section shaft and the central seventh section shaft 31 at the left end and the right end of the central transmission shaft 10 are respectively in close fit connection with the inner splines at the inward ends of the first universal coupling 9 and the second universal coupling 12 through screws thereon, the outer splines on the output third section shafts 36 of the first output shaft 8 and the second output shaft 13 are respectively in close fit connection with the inner splines at the outward ends of the first universal coupling 9 and the second universal coupling 12 through screws thereon, the shoulder surfaces of the output third section shafts 36 on the first output shaft 8 and the second output shaft 13 and the output second section shaft formed by the diameter difference are in contact positioning with the inner side end surface of the inner ring of the third bearing 22, and the inner side end surfaces of the annular body on the cutter saw chassis 29 screwed on the first output shaft 8 and the second output shaft 13 are in contact positioning with the outer side end surface of the inner ring of the third bearing 22; and an internal spline on a vertical third section shaft 32 on the driving shaft 15 is in fit connection with an external power shaft.

The working principle of the sea-buckthorn trunk shaping and trimming device is as follows:

after an external power shaft provides torque for a driving shaft 15, a first bevel gear 14 rotates and provides torque for a second bevel gear 11, the second bevel gear 11 transmits the torque to a central transmission shaft 10 and further transmits the torque to a first universal coupling 9 and a second universal coupling 12, the first universal coupling 9 and the second universal coupling 12 transmit the torque to a first output shaft 8 and a second output shaft 13 through a transmission ratio i equal to 1.06, and 2 circular saw blades 28 which are arranged on the first output shaft 8 and the second output shaft 13 by adopting a knife saw chassis 29, a gland 27 and a counter nut 26 and have the same structure are driven to rotate; finally achieving the cutting purpose.

Claims

1. A sea-buckthorn trunk reshaping and pruning device is characterized by comprising 2 knife saw connecting structures (3) with the same structure, a box body and a transmission mechanism (7);

the box body comprises a first box body (5) and a second box body (6), the first box body (5) and the second box body (6) have the same structure and are respectively a nonstandard half shell piece which is symmetrical left and right, and the first box body (5) and the second box body (6) are assembled together by adopting bolts; the transmission mechanism (7) is arranged in the box body, a first output shaft (8) and a second output shaft (13) in the transmission mechanism (7) respectively extend out from the left upper part and the right upper part of the box body, and a driving shaft (15) in the transmission mechanism (7) extends out from the bottom end of the box body; the 2 knife saw connecting structures (3) with the same structure are symmetrically and fixedly arranged on the extending ends of the first output shaft (8) and the second output shaft (13).

2. The sea buckthorn trunk shaping and trimming device according to claim 1, wherein the knife saw connecting structure (3) comprises a counter nut (26), a circular saw blade (28), a saw blade gland (27) and a knife saw chassis (29);

the cutter saw chassis (29) is a disc part, two ends of the disc part are respectively provided with circular grooves with the same structure, the rotating center lines of the circular grooves at the two ends are collinear with the rotating center line of the cutter saw chassis (29), the center of the circular groove at the 2 end is provided with a ring body which is higher than the groove wall and is provided with an internal spline through hole at the center, the internal spline through hole on the ring body has the same structure as an external spline on an output first section shaft (35) on the first output shaft (8) or the second output shaft (13);

the saw blade gland (27) is a plate-type circular ring structural part, the diameter of the excircle of the saw blade gland (27) is the same as that of the knife saw chassis (29), a circular through hole is formed in the center of the saw blade gland (27), and the diameter of the circular through hole in the center of the saw blade gland (27) is larger than that of a screw shaft (34) on the first output shaft (8) or the second output shaft (13);

the circular saw blade (28) is a standard part, a GB/T21680-2008 model circular saw blade can be adopted, a circular through hole is arranged at the center of the circular saw blade (28), and the aperture d range of the circular through hole of the circular saw blade (28) is required: d is more than 8mm and less than 20mm, and the requirement of the outer diameter D of the circular saw blade (28) is as follows: d is less than 150 mm;

the saw blade gland (27), the circular saw blade (28) and the knife saw chassis (29) are sequentially sleeved on the first output shaft (8) or the second output shaft (13) in the transmission mechanism (7) from top to bottom, the rotating axes of the saw blade gland (27), the circular saw blade (28) and the knife saw chassis (29) and the rotating axes of the first output shaft (8) or the second output shaft (13) are collinear, the knife saw chassis (29) is arranged on an external spline of an output first section shaft (35) on the first output shaft (8) or the second output shaft (13), and the length of an internal spline through hole on the knife saw chassis (29) is greater than that of the external spline on the output first section shaft (35); the bottom end face of a ring body on the cutter saw chassis (29) is in contact connection with the outer end face of an inner ring of the third bearing (22), the top end face of the ring body on the cutter saw chassis (29) is in contact connection with the inner side end face of the circular saw blade (28), the saw blade pressing cover (27) covers the circular saw blade (28), the circular saw blade (28) and the saw blade pressing cover (27) are sleeved on the screw shaft (34) on the first output shaft (8) or the second output shaft (13), and the anti-tooth nut (26) is sleeved on the screw shaft (34) in the first output shaft (8) or the second output shaft (13) and is screwed for axial positioning.

3. The sea buckthorn trunk shaping and trimming device according to claim 1, wherein the case body is a hollow case body which is symmetrical in front and back and left and right, the first case body (5) and the second case body (6) are 2 half case body parts which are identical in structure and are cut along a symmetrical plane of the front and back symmetry of the case body, and the first case body (5) and the second case body (6) are fixed into the case body by adopting a bolt group;

the central point department of box sets up the casing spare that an appearance is provided with cuboid cavity for cuboid's inside center department, outwards and set up curved left side symmetrically on the tank wall respectively about cuboid casing spare, right side tourus, curved left side, the front and back plane of symmetry of right side tourus and cuboid casing spare is coplanar, the radius of curvature of controlling the tourus is 100mm ~ 150mm, the location axis of tourus is 25 ~ 30 pitch arc for a central angle of each output centre of a circle for cuboid casing spare focus about it, curved left side, the central ladder through-hole of right side tourus and the cuboid cavity on the cuboid casing spare intercommunication, curved left side, the central ladder through-hole of right side tourus is 7 section formula shoulder holes respectively: the first section of hole (17), the second section of hole, the third section of hole, the fourth section of hole, the fifth section of hole (19), the sixth section of hole and the seventh section of hole are arranged from inside to outside in sequence, the first section of hole on the arc-shaped left and right circular ring bodies is communicated with a cuboid-shaped cavity on a cuboid-shaped shell body, the first section of hole (17) is in static fit with an outer ring of a second bearing (23), the diameters of the first section of hole (17) and the second section of hole are different to form a shaft shoulder, the fifth section of hole (19) is in static fit with an outer ring of a third bearing (22), and the diameters of the fourth section of hole, the fifth section of hole and the sixth section of hole are different to form the shaft shoulder; the third section of hole is only a cavity; the seventh section of hole is communicated with the outside; the rotation axis of each of the first to seventh holes is on a tangent line of an arc line with a center angle of 25 degrees from the center of gravity of the cuboid shell to the center of the output end, the rotation axis of the first hole is a tangent line at the starting point of the arc line, and the rotation axis of the seventh hole is a tangent line at the ending point of the arc line;

a bottom end circular ring body is downwards arranged on the bottom end box wall of the cuboid shell body, the rotation axis of the bottom end circular ring body and the intersection line of the left and right symmetrical surfaces and the front and back symmetrical surfaces of the cuboid shell body are collinear, a step hole is arranged at the center of the bottom end circular ring body, the rotation axis of the step hole on the bottom end circular ring body and the rotation axis of the bottom end circular ring body are collinear, the step hole on the bottom end circular ring body is communicated with the cuboid cavity on the cuboid shell body, the step hole on the bottom end circular ring body is a 4-section step hole, the 4-section step hole is a vertical first section hole, a vertical second section hole (16), a vertical third section hole and a vertical fourth section hole from top to bottom, the vertical second section hole (16) is communicated with the cuboid cavity on the cuboid shell body and is statically matched with the outer ring of the first bearing (25), and the diameters of the vertical first section hole and the vertical second section hole (16) are different to form a shaft shoulder, the diameter of the vertical second section of hole (16) is different from that of the vertical third section of hole to form a hole shoulder, and the vertical fourth section of hole is a cavity;

a branch fixing groove (18) which is in contact with branches is formed in the middle of the top end of the cuboid-shaped shell piece in the left-right direction, the branch fixing groove (18) is a V-shaped groove, the length of the branch fixing groove (18) in the left-right direction is equal to that of the cuboid-shaped shell piece in the left-right direction, the front-back thickness of the branch fixing groove (18) is smaller than that of the first box body (5), and the front-back thickness of the branch fixing groove (18) is evenly distributed on the top ends of the first box body (5) and the second box body (6);

a first pair of bolt holes, a second pair of bolt holes and a third pair of bolt holes for installing 2 first bolts (1), 2 second bolts (2) and 2 third bolts (4) are symmetrically arranged on the box body from top to bottom in a bilateral mode.

4. The sea buckthorn trunk shaping and trimming device according to claim 3, wherein the diameters of the first pair of bolt holes, the second pair of bolt holes and the third pair of bolt holes are all 5 mm; the circle centers of the first pair of bolt holes are arranged at the centers of the left and right groove walls of the branch fixing groove (18) at the top end of the box body; the centre of a circle of the second pair of bolt holes is located directly over the first section hole (17) of the regular semi-cylinder cavity and is 5mm away from the top wall of the first section hole (17), the centre of a circle of the third pair of bolt holes is located on the left side, a block extending under the third section hole of the right torus is 12mm long, 6mm wide, 5mm thick cuboid and diameter are 12mm, the thickness is on the arch cylinder formed by combining the semi-cylinders of 5mm together, the centre of a circle coincides with the centre of a circle of the semi-cylinder, the thickness of the arch cylinder is equally divided into the bottom of the left torus and the bottom of the right torus, the bottom surface of one side of the arch cylinder and the contact plane between the two boxes are in a coplanar relationship, the rotary axes of the three pairs of bolt holes are parallel to each other, and are perpendicular to the symmetrical plane around the box.

5. The sea buckthorn trunk shaping and trimming device according to claim 1, wherein the transmission mechanism (7) further comprises a first universal coupling (9), a central transmission shaft (10), a second bevel gear (11), a second universal coupling (12), a first bevel gear (14), a first sleeve (24), a second sleeve (20), a third sleeve (21), a first bearing (25), 2 second bearings (23) with the same structure and 2 third bearings (22) with the same structure;

the first bearing (25) is sleeved at the shaft shoulder of the vertical second section shaft of the driving shaft (15) and is installed in the vertical second section hole (16) of the box body, the first sleeve (24) is sleeved at the shaft shoulder of the vertical second section shaft of the driving shaft, the lower end face of the first sleeve is contacted with the upper end face of the inner ring of the first bearing (25), the upper end face of the first sleeve is contacted and positioned with the lower end face of the first bevel gear (14), the inner spline hole in the first bevel gear (14) is in static fit with the outer spline on the vertical first section shaft (33) on the driving shaft (15), and the upper side of the first bevel gear (14) is positioned according to the static fit of the outer spline and the fit relation of the first bevel gear (11); the bottom end face of the outer bearing ring of the first bearing (25) is in contact with a hole shoulder formed by the diameter difference of the vertical third section hole and the vertical second section hole (16); 2 second bearings (23) with the same structure are respectively sleeved on a central second section shaft and a central sixth section shaft of the central transmission shaft (10) and are arranged in first section holes (17) of a left annular body and a right annular body of the box body, a second sleeve (20) is sleeved on the central second section shaft of the central transmission shaft (10), the left end face of the second sleeve (20) is contacted with the right end face of an inner ring of the left second bearing (23), and the right end face is contacted with the left end face of a shaft shoulder formed at the connecting position of the central second section shaft and the central third section shaft of the central transmission shaft (10); a third sleeve (21) is sleeved on a fifth central section shaft of the central transmission shaft (10), the left end surface of the third sleeve (21) is contacted with the right end surface of a second bevel gear (11), the right end surface of the third sleeve (21) is contacted with the left end surface of an inner ring of a second bearing (23), an inner spline hole on the second bevel gear (11) is in static fit with an outer spline on a fourth central section shaft (30) of the central transmission shaft (10), 2 third bearings (22) with the same structure are sleeved on the first output shaft (8), the shaft shoulder of the second section of output shaft of the second output shaft (13) is arranged in a fifth section of hole (19) of a left annular body and a right annular body of the box body, the inner side end face of an outer ring of two third bearings (22) with the same structure is contacted with the outer side end face of the hole shoulder at the joint of a fourth section of hole and the fifth section of hole (19), and the outer side end face of the outer ring is contacted with the inner side end face of the hole shoulder at the joint of the fifth section of hole (19) and a sixth section of hole; the outer splines on the central first section shaft and the central seventh section shaft (31) at the left end and the right end of the central transmission shaft (10) are respectively and tightly matched and connected with the inner splines at the inward ends of the first universal coupling (9) and the second universal coupling (12) through screws on the inner splines, the outer splines on the output third section shafts (36) of the first output shaft (8) and the second output shaft (13) are respectively and tightly matched and connected with the inner splines at the outward ends of the first universal coupling (9) and the second universal coupling (12) through screws on the inner splines, the output first section shafts (35) on the first output shaft (8) and the second output shaft (13) and the output second section shafts are positioned by the shaft shoulder surface formed by the diameter difference and the inner ring end surface at the inner side of the third bearing (22) in a contact way, the inner end face of a circular ring body on a knife saw chassis (29) screwed on the first output shaft (8) and the second output shaft (13) is in contact positioning with the outer end face of the inner ring of the third bearing (22); an internal spline on a vertical third section shaft (32) on the driving shaft (15) is connected with an external power shaft in a matching way.

6. The sea buckthorn trunk shaping and trimming device according to claim 5, wherein the central transmission shaft (10) is a cylindrical straight rod seven-section stepped shaft, and is a central first section shaft, a central second section shaft, a central third section shaft, a central fourth section shaft (30), a central fifth section shaft, a central sixth section shaft and a central seventh section shaft (31) in sequence from left to right; the central first-stage shaft and the central seventh-stage shaft (31) have the same structure size; the central second-section shaft and the central sixth-section shaft have the same structure; the diameters of the central third section shaft and the central fifth section shaft are the same, the diameters of the central third section shaft and the central fifth section shaft are larger than the diameters of the central second section shaft and the central sixth section shaft, and shaft shoulders are formed between the central third section shaft and the central second section shaft as well as between the central fifth section shaft and the central sixth section shaft; the central fifth section shaft is matched with a third sleeve (21); the diameter of the central third section shaft is smaller than that of the central fourth section shaft (30); external splines are arranged on the central first section shaft and the central seventh section shaft (31), and external splines used for mounting the second bevel gear (11) are arranged on the central fourth section shaft (30); the central sixth section of shaft is in static fit connection with the inner ring of the second bearing (23), the central second section of shaft is in static fit connection with the inner ring of the second bearing (23), and the central second section of shaft is in sliding connection with a second sleeve (20) arranged between the second bearing (23) and a shaft shoulder formed by the central second section of shaft and the central third section of shaft.

7. The sea buckthorn trunk shaping and trimming device according to claim 1, wherein the first output shaft (8) is composed of a screw shaft (34), a first output section shaft (35), a second output section shaft and a third output section shaft (36); the diameters of the screw shaft (34) and the output third section shaft (36) are sequentially increased, the screw shaft (34), the output first section shaft (35), the output second section shaft and the output third section shaft (36) are sequentially connected into a whole end to end, the rotation axes of the screw shaft (34), the output first section shaft (35), the output second section shaft and the output third section shaft (36) are collinear, and the screw shaft (34) is provided with threads for installing a reverse-tooth nut (26) to fixedly install a circular saw blade (28) and a saw blade gland (27) on the screw shaft (34); an external spline for mounting a knife saw chassis (29) is arranged on the first output section shaft (35), and the second output section shaft is in static fit with an inner ring of the third bearing (22); an outer spline for connecting with the first universal coupling (9) or the second universal coupling (12) is arranged on the output third section shaft (36); the first output shaft (8) and the second output shaft (13) have the same structure.

8. The sea buckthorn trunk shaping and trimming device according to claim 1, wherein the driving shaft (15) is a three-section stepped shaft, and a vertical first section shaft (33), a vertical second section shaft and a vertical third section shaft (32) are sequentially arranged from top to bottom; the diameter is from big to little from top to bottom, and vertical first section axle (33) are provided with the external splines that are used for being connected with first bevel gear (14), and vertical third section axle (32) are provided with the driving shaft internal spline that is used for being connected with the power input part cooperation, and the diameter of vertical second section axle equals and adopts quiet cooperation to connect with the bearing inner ring internal diameter of the first bearing (25) of joining in marriage, is sliding fit connection between vertical second section axle and the first sleeve (24) of installing on it.