CN111345216A

CN111345216A - Municipal administration trees transplanting device

Info

Publication number: CN111345216A
Application number: CN201811569475.7A
Authority: CN
Inventors: 高晓霞; 许建华; 马飞军
Original assignee: Aohu Construction Group Co ltd
Current assignee: Linshu Dushu Yizhi Fuhua Trade Co ltd
Priority date: 2018-12-21
Filing date: 2018-12-21
Publication date: 2020-06-30
Anticipated expiration: 2038-12-21
Also published as: CN111345216B

Abstract

The invention belongs to the technical field of tree transplanting, and particularly relates to a municipal tree transplanting device which comprises a first fixing block, a first transmission cavity, a scraper knife and a saw blade, wherein the first transmission cavity is formed in the first fixing block; when the transplanting device of the invention is used for transplanting trees, the shovel blade moves into the soil around the trees without obstruction under the high-frequency small-amplitude vibration traction of the vibration device; when encountering a tree root or a brick stone, the saw blades on two sides of the scraper knife repeatedly swing around the central axis of the swing shaft, the two saw blades repeatedly saw the encountered tree root and brick at high frequency, and the shearing function of the reciprocating vibration of the scraper knife on the tree root or the brick and the sawing function of the two saw blades on the tree root or the brick jointly exert the effect of enabling thicker tree root or brick stones to be cut off more easily, so that the tree transplanting time is shortened, and the tree transplanting working efficiency is improved.

Description

Municipal administration trees transplanting device

Technical Field

The invention belongs to the technical field of tree transplanting, and particularly relates to a municipal tree transplanting device.

Background

The shovel blade in the conventional tree transplanting device is arranged at the lower end of a vibration device, and when the shovel blade is inserted into soil around a tree, the shovel blade moves into the soil by means of vibration of the vibration device; when encountering tree roots or bricks, the scraper knife can only cut off the tree roots or the bricks by means of reciprocating small-amplitude high-frequency vibration transmitted by the vibration device; when the tree root is thick, the cutting function of the scraper knife is greatly weakened, and more time is needed to cut the thick tree root, so that the work efficiency of transplanting the tree is reduced.

The invention designs a municipal tree transplanting device to solve the problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention discloses a municipal tree transplanting device which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "below", "upper" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention usually place when using, and are only used for convenience of description and simplification of description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The utility model provides a municipal administration trees transplanting device which characterized in that: the device comprises a first fixed block, a first transmission cavity, a first sliding hole, a second sliding hole, a first sliding chute, a second fixed block, a transmission groove, a first trapezoidal guide groove, a third sliding chute, a third fixed block, a second transmission cavity, a third sliding hole, a fourth sliding chute, a second trapezoidal guide groove, a strand rod, a fifth sliding chute, a swinging groove, a scraper, a nested notch, a first sharpening sawtooth, a connecting rod, a first sliding block, a fixed groove, a first reset spring, a second sliding block, a second reset spring, a second rack, a second gear, a third rack, a second trapezoidal guide block, a second connecting block, a trigger pin, a swinging rod, a trigger sliding chute, a swinging hole, an inward-concave cambered surface, a swinging shaft, a third connecting block, a saw blade, a second sharpening sawtooth, an outward-convex cambered surface, a limiting clamping block, a first connecting block, a first rack, a first gear, a telescopic sleeve, a limiting sliding chute, a telescopic groove, a first trapezoidal guide block, a second trapezoidal guide block, a, The first fixing block is internally provided with a first transmission cavity; the upper end surface of the first fixed block is provided with a first sliding hole communicated with the first transmission cavity; the lower end face of the first fixed block is provided with a second sliding hole communicated with the first transmission cavity; a first sliding groove and a second sliding groove which are communicated with the first transmission cavity are formed in one side end face of the first fixing block, and the first sliding groove is positioned obliquely above the second sliding groove; a fixed groove is formed in the center of the lower end face of the first sliding block; the first sliding block is embedded into the upper end of the first transmission cavity through the sliding fit of the side end face of the first sliding block and the inner wall of the first transmission cavity, and the notch of the fixing groove faces downwards; one end of the connecting rod penetrates through a first sliding hole in the first fixed block from top to bottom to be fixedly connected with the first sliding block; the second sliding block is embedded into the first transmission cavity through the sliding fit of the side end face of the second sliding block and the inner wall of the first transmission cavity and is positioned between the first sliding groove and the second sliding groove; the second reset spring is positioned at the lower end of the first transmission cavity, the upper end of the second reset spring is connected with the lower end surface of the second sliding block, and the lower end of the second reset spring is connected with the bottom surface of the first transmission cavity; the first reset spring is positioned between the first sliding block and the second sliding block in the first transmission cavity, the upper end of the first reset spring enters the fixed groove and is connected with the top surface of the fixed groove, and the lower end of the first reset spring is connected with the second sliding block below the fixed groove; one end of the second rack penetrates through the second sliding hole from bottom to top and is connected with the second sliding block.

A transmission groove is formed in one side end face of the second fixed block; a first trapezoidal guide groove is formed in the bottom surface of the transmission groove along the depth direction of the transmission groove and communicated with the side end face of the second fixed block, wherein the transmission groove is formed in the second fixed block; a third sliding chute is arranged beside the first trapezoidal guide groove; the side end face of the second fixed block, which is provided with the transmission groove, is fixedly connected with the side end face of the first fixed block, which is provided with the first sliding groove and the second sliding groove, and the first sliding groove and the second sliding groove are positioned in the transmission groove; the first gear is arranged in the transmission groove through a shaft; the first connecting block penetrates through the first sliding groove and is fixedly connected with the side end face of the first sliding block; the first rack is positioned in the transmission groove, the upper end of the first rack is fixedly connected with the first connecting block, and the lower end of the first rack is meshed with the first gear; the lower end of the first rack is matched with a third sliding chute below the first rack; the upper end surface of the telescopic sleeve is a tooth surface; a limit chute is arranged in the telescopic sleeve; the end surface of one end of the telescopic sleeve is provided with a telescopic groove communicated with the limiting sliding groove; the lower end surface of the telescopic sleeve is provided with a first trapezoidal guide block; the telescopic sleeve is arranged on the bottom surface of the transmission groove through the sliding fit of the first trapezoidal guide block and the first trapezoidal guide groove, and the telescopic sleeve is meshed with the first gear above the telescopic sleeve; one end of the limiting telescopic block penetrates through the telescopic groove and is inserted into the limiting sliding groove; one end of the limiting telescopic block inserted into the limiting sliding groove is provided with two limiting clamping blocks, and the two limiting clamping blocks are in sliding fit with the limiting sliding groove; one end of the limiting telescopic block, which is not inserted into the telescopic groove, passes through the second sliding groove to be matched with the first sliding block positioned above the limiting telescopic block; the stop block is arranged at the lower end of the limiting telescopic block and is positioned in the first transmission cavity; the third reset spring is positioned in the limiting sliding groove, one end of the third reset spring is connected with the end face of the limiting telescopic block, and the other end of the third reset spring is connected with the inner wall of the limiting sliding groove.

A second transmission cavity is formed in the third fixed block; the upper end surface of the third fixed block is provided with a third sliding hole communicated with the second transmission cavity; a fourth chute communicated with the second transmission cavity is formed in the lower end face of the third fixed block; a second trapezoidal guide groove is formed in one side wall of the second transmission cavity along the horizontal direction; the third fixed block is arranged at the lower end of the first fixed block, and the third sliding hole is in butt joint with the second sliding hole; the lower end of a second rack positioned outside the first fixed block penetrates through the third sliding hole from top to bottom to enter the second transmission cavity; the second gear is arranged in the second transmission cavity through a shaft and is meshed with the second rack; a second trapezoidal guide block is arranged on the side end face of the third rack; the third rack is arranged in the second transmission cavity through the sliding fit of the second trapezoidal guide block and the second trapezoidal guide groove, and the third rack is meshed with the second gear above the third rack; the upper end of the second connecting block penetrates through the fourth sliding chute from bottom to top and is fixedly connected with the third rack; the trigger pin is arranged on the side end face of the lower end of the second connecting block; the lower end of the strand rod is provided with an outward convex cambered surface; the upper end of the strand rod is provided with a fifth chute; a swing groove communicated with the lower end of the strand rod is formed in the bottom surface of the fifth sliding groove; the strand rod is arranged at the lower end of the third fixed block, and the fifth sliding groove is in butt joint with the fourth sliding groove; the lower end of the second connecting block is positioned in the fifth sliding groove, and the trigger pin is positioned above the swinging groove; a nesting notch is formed in the center of the upper end of the scraper knife; the lower end of the scraper knife is provided with a first concave edging saw tooth; the scraper knife is arranged at the lower end of the third fixed block, and the strand rod is embedded into the nesting notch; the side wall of the strand rod is fixedly connected with the inner wall of the nesting notch in the scraper knife; a through triggering chute is formed in the side end face of the upper end of the swing rod; a swing hole is formed in the lower center of the swing rod; the swing rod is arranged in the swing groove through a swing shaft, and the upper end of the swing rod is in sliding rotation fit with the outer side of the trigger pin through the trigger sliding groove and is nested on the trigger pin; the third connecting block is arranged at the lower end of the swing rod; the upper end of the saw blade is provided with an inward concave cambered surface; the lower end of the saw blade is provided with second sharpening saw teeth with a certain radian; the two saw blades are arranged on two sides of the third connecting block and are respectively in contact sliding fit with two side surfaces of the scraper knife; the concave cambered surfaces on the two saw blades are respectively in contact fit with the convex cambered surfaces at the lower ends of the strand rods.

As a further improvement of the present technology, the first return spring is a compression spring, and the first return spring is in a pre-compressed state in an initial state.

As a further improvement of the present technology, the second return spring is a compression spring, and the second return spring is in a pre-compressed state in an initial state.

As a further improvement of the present technology, the first return spring and the second return spring have the same urging force on the second slider in the initial state.

As a further improvement of the present technology, the third return spring is a compression spring.

As a further improvement of the technology, the side end surface of the stop block is flush with the end surface of one end of the limiting telescopic block extending into the first transmission cavity.

As a further improvement of the present technology, the second connecting block is located on one side of the fourth sliding groove in the initial state.

As a further improvement of the technology, the arc center axis of the concave cambered surface at the upper end of the saw blade is superposed with the arc center axis of the convex cambered surface at the lower end of the strand rod.

As a further improvement of the technology, the arc center axis of the concave cambered surface is superposed with the central axis of the pendulum shaft; the arc center axis of the convex cambered surface is superposed with the central axis of the pendulum shaft.

As a further improvement of the present technology, the second sharpening serration has a certain curvature, and an arc center axis thereof coincides with a swing axis center axis.

The oscillating hole is located at the lower part of the center of the oscillating rod, so that the oscillating amplitude of the saw blade along with the oscillating rod around the central axis of the oscillating shaft is large to the greatest extent, the torque of the torque generated by the trigger pin to the oscillating rod is larger than the torque of the torque generated by the tree roots or brick stones to the oscillating rod through the saw blade, the oscillating rod is triggered by the trigger pin to oscillate, the obstruction of the tree roots or the brick stones is overcome more easily, the sawing is carried out on the tree roots or the brick stones repeatedly, the tree roots or the brick stones are cut off in a short time, and the tree transplanting efficiency is improved.

The design purpose that the first return spring is in a pre-compression state in the initial state and the second return spring is in the pre-compression state in the initial state is that the first return spring and the second return spring are not deformed before encountering tree roots or bricks and stones, and the first sliding block and the second sliding block do not move relative to the first fixed block; the movement of the connecting rod driven by the vibration device is integrated and synchronous with the movement of the first fixing block, the second fixing block, the third fixing block, the strand rod and the scraper knife; the scraper knife ensures that the saw blades distributed on two sides of the scraper knife cannot swing around the central axis of the swing shaft before the scraper knife meets tree roots or brick stones.

The design purpose that the acting force of the first return spring and the acting force of the second return spring on the second sliding block are equal in the initial state is that when the scraper knife meets a tree root or a brick stone, the connecting rod drives the first sliding block to slide relative to the first fixed block under the actions of repeated vibration of the vibration device and prevention of the tree root or the brick stone; the first return spring is repeatedly further compressed; the first sliding block drives the first rack to move up and down repeatedly through the first connecting block; the first rack drives the first gear to rotate repeatedly; the first gear drives the telescopic sleeve to move repeatedly along the first trapezoidal guide groove; when the first return spring is compressed, the first rack moves downwards under the driving of the first sliding block, and the first gear drives the telescopic sleeve to move into the transmission groove along the first trapezoidal guide groove; the telescopic sleeve drives the limiting telescopic block to contract towards the transmission groove through two limiting clamping blocks fixedly connected with the limiting telescopic block; the limiting telescopic block is gradually separated from the second sliding block above, and when the first return spring is compressed for a certain length, the limiting telescopic block is just separated from the second sliding block under the pulling of the telescopic sleeve and the limitation on the second sliding block is removed; because the acting force of the first return spring and the second return spring on the second sliding block is equal in the initial state, when the limiting telescopic block is separated from the second sliding block, the downward acting force of the first return spring on the second sliding block is far greater than the upward acting force of the second return spring on the second sliding block, and the second sliding block instantaneously moves downward along the inner wall of the first transmission cavity; the side end surface of the stop block is flush with the end surface of one end of the limiting telescopic block extending into the first transmission cavity, so that the second sliding block is in contact fit with the stop block immediately after being separated from the limiting telescopic block; the second sliding block drives the second gear to rotate through a second rack connected with the second sliding block; the second gear drives the second connecting block and the trigger pin to slide to the other side of the fourth sliding groove together through the third rack; the trigger pin drives the swing rod to swing around the central axis of the swing shaft; the swing rod drives the two saw blades to swing to one side simultaneously around the central axis of the swing shaft through a third connecting block; the swinging saw blade saws the tree roots or brick stones contacted with the swinging saw blade; when the vibration device drives the first sliding block to move upwards through the connecting rod, the first return spring gradually recovers to the initial state, and the first sliding block drives the first rack to move upwards through the first connecting block; the first rack drives the telescopic sleeve to slide towards the first fixed block through the first gear; the stop block fixedly connected with the limit telescopic block is in contact fit with the second sliding block, so that the third return spring is gradually compressed; when the connecting rod drives the second sliding block to move upwards and cross the limiting telescopic block through the first sliding block, the first return spring and the second return spring, the third return spring is compressed to the limit, the limiting telescopic block moves towards the second transmission cavity along the telescopic groove and recovers the limitation on the second sliding block under the action of the third return spring, and the third return spring recovers the original shape; meanwhile, the second sliding block drives the second gear to rotate reversely through the second rack; the second gear drives the trigger pin to move to the initial position through the third rack and the second connecting block; the trigger pin drives the swing rod to swing towards the initial external position; the oscillating bar drives the two saw blades to oscillate around the central axis of the oscillating shaft to the initial position, and the roots or the bricks and stones are sawed reversely again; under the drive of the vibration device, the two saw blades swing around the central axis of the pendulum shaft in a reciprocating way, and the tree roots or the brick stones are sawed repeatedly at high frequency; when the saw blade saws off the tree roots or the brick stones, the resistance of the tree roots or the brick stones to the scraper knife disappears, the first sliding block and the second sliding block return to the initial positions under the action of the first return spring and the second return spring, and the limiting telescopic block returns to the initial positions and restores the limitation on the second sliding block under the action of the stop block and the third return spring; before the scraper knife continues to move downwards and meets the tree root or the brick again, the two saw blades cannot swing, and the first and second pre-compressed reset springs enable the first fixing block, the second fixing block, the third fixing block, the strand rod and the scraper knife to move integrally and synchronously.

According to the invention, the arc center axis of the concave cambered surface at the upper end of the saw blade is superposed with the arc center axis of the convex cambered surface at the lower end of the strand rod, and the arc center axis of the concave cambered surface is superposed with the central axis of the swing shaft; the design purpose that the arc center axis of the convex cambered surface coincides with the central axis of the pendulum shaft is to ensure that the saw blade cannot be blocked due to interference of the lower end of the strand rod in the swinging process.

The second open-edged saw teeth have a certain radian, and the design purpose that the arc center axis of the second open-edged saw teeth is coincident with the central axis of the swing shaft is to ensure that the second open-edged saw teeth on the saw blade do not separate from the tree root or the brick stone all the time and interact with the tree root or the brick stone until the tree root or the brick stone is sawn off in the process that the saw blade swings around the swing shaft.

When the scraper knife meets a tree root or a brick stone, the connecting rod drives the first sliding block to slide relative to the first fixing block under the actions of repeated vibration of the vibration device and prevention of the tree root or the brick stone; the first return spring is repeatedly further compressed; the first sliding block drives the first rack to move up and down repeatedly through the first connecting block; the first rack drives the first gear to rotate repeatedly; the first gear drives the telescopic sleeve to move repeatedly along the first trapezoidal guide groove.

When the first return spring is compressed, the first rack moves downwards under the driving of the first sliding block, and the first gear drives the telescopic sleeve to move into the transmission groove along the first trapezoidal guide groove; the telescopic sleeve drives the limiting telescopic block to contract towards the transmission groove through two limiting clamping blocks fixedly connected with the limiting telescopic block; the limiting telescopic block is gradually separated from the second sliding block above, and when the first return spring is compressed for a certain length, the limiting telescopic block is just separated from the second sliding block under the pulling of the telescopic sleeve and the limitation on the second sliding block is removed; because the acting force of the first return spring and the second return spring on the second sliding block is equal in the initial state, when the limiting telescopic block is separated from the second sliding block, the downward acting force of the first return spring on the second sliding block is far greater than the upward acting force of the second return spring on the second sliding block, and the second sliding block instantaneously moves downward along the inner wall of the first transmission cavity; the side end surface of the stop block is flush with the end surface of one end of the limiting telescopic block extending into the first transmission cavity, so that the second sliding block is in contact fit with the stop block immediately after being separated from the limiting telescopic block; the second sliding block drives the second gear to rotate through a second rack connected with the second sliding block; the second gear drives the second connecting block and the trigger pin to slide to the other side of the fourth sliding groove together through the third rack; the trigger pin drives the swing rod to swing around the central axis of the swing shaft; the swing rod drives the two saw blades to swing to one side simultaneously around the central axis of the swing shaft through a third connecting block; the swinging saw blade saws the tree roots or brick stones contacted with the swinging saw blade; when the vibration device drives the first sliding block to move upwards through the connecting rod, the first return spring gradually recovers to the initial state, and the first sliding block drives the first rack to move upwards through the first connecting block; the first rack drives the telescopic sleeve to slide towards the first fixed block through the first gear; the stop block fixedly connected with the limit telescopic block is in contact fit with the second sliding block, so that the third return spring is gradually compressed; when the connecting rod drives the second sliding block to move upwards and cross the limiting telescopic block through the first sliding block, the first return spring and the second return spring, the third return spring is compressed to the limit, the limiting telescopic block moves towards the second transmission cavity along the telescopic groove and recovers the limitation on the second sliding block under the action of the third return spring, and the third return spring recovers the original shape; meanwhile, the second sliding block drives the second gear to rotate reversely through the second rack; the second gear drives the trigger pin to move to the initial position through the third rack and the second connecting block; the trigger pin drives the swing rod to swing towards the initial external position; the oscillating bar drives the two saw blades to oscillate around the central axis of the oscillating shaft to the initial position, and the roots or the bricks and stones are sawed reversely again; under the drive of the vibration device, the two saw blades swing around the central axis of the pendulum shaft in a reciprocating way, and the tree roots or the brick stones are sawed repeatedly at high frequency; when the saw blade saws off the tree roots or the brick stones, the resistance of the tree roots or the brick stones to the scraper knife disappears, the first sliding block and the second sliding block return to the initial positions under the action of the first return spring and the second return spring, and the limiting telescopic block returns to the initial positions and restores the limitation on the second sliding block under the action of the stop block and the third return spring; before the scraper knife continues to move downwards and meets the tree root or the brick again, the two saw blades cannot swing, and the first and second pre-compressed reset springs enable the first fixing block, the second fixing block, the third fixing block, the strand rod and the scraper knife to move integrally and synchronously.

Compared with the traditional tree transplanting device, when the tree is transplanted by the transplanting device, the shovel blade moves into the soil around the tree without obstruction under the high-frequency small-amplitude vibration traction of the vibration device; when a tree root or a brick stone is encountered, the saw blades positioned at two sides of the scraper knife repeatedly swing around the central axis of the swing shaft, the two saw blades repeatedly saw the encountered tree root and brick at high frequency, and the shearing function of the reciprocating vibration of the scraper knife on the tree root or the brick and the sawing function of the two saw blades on the tree root or the brick jointly play a role in enabling thicker tree root or brick stones to be more easily cut off, so that the tree transplanting time is shortened, and the tree transplanting work efficiency is improved; the invention has simple structure and better use effect.

Drawings

Fig. 1 is a schematic view of a transplanting apparatus.

Fig. 2 is a schematic cross-sectional view of the first fixed block, the second fixed block, the first slider, the second slider, the first return spring, the second return spring, the limiting telescopic block, the stop block, the telescopic sleeve, the third return spring, the first gear and the first rack in cooperation.

Fig. 3 is a schematic cross-sectional view of the connection rod, the first fixing block, the second fixing block, the first return spring, the second return spring, the first slider, the second slider, the first connection block, the first rack, the first gear, the second rack, the second gear, and the third fixing block.

Fig. 4 is a schematic cross-sectional view of the connection rod, the first fixing block, the second fixing block, the first return spring, the second return spring, the first slider, the second slider, the first connection block, the first rack, the first gear, the telescopic sleeve, the second rack, the second gear, the third fixing block, and the third rack.

FIG. 5 is a perspective view of the third fixing block, the scraper knife, the strand rod and the swing rod.

Fig. 6 is a schematic cross-sectional view of the first fixing block, the third fixing block, the second rack, the second gear, the third rack, the second connecting block and the strand rod.

Fig. 7 is a schematic cross-sectional view of the first gear, the second fixing block, the telescopic sleeve, the third return spring, and the first trapezoidal slider.

FIG. 8 is a schematic view of the cross section of the blade, the blade bar, the swing link, the swing shaft, the third connecting block and the saw blade.

FIG. 9 is a schematic view of the cross section of the blade, the blade bar, the swing link, the third connecting block and the saw blade.

Fig. 10 is a perspective view schematically illustrating a first fixing block.

Fig. 11 is a perspective view of a first slide hole in the first fixing block.

Fig. 12 is a schematic perspective view of a first slider.

Fig. 13 is a perspective view of a second fixing block.

Fig. 14 is a perspective view schematically illustrating a third fixing block.

Fig. 15 is a schematic sectional perspective view of a third fixing block.

Fig. 16 is a schematic view of a blade.

Fig. 17 is a schematic perspective view of a strand.

Fig. 18 is a schematic cross-sectional view of a strand.

Fig. 19 is a schematic view of a swing link.

Fig. 20 is a schematic view of a saw blade.

Fig. 21 is a schematic cross-sectional view of the bellows.

Fig. 22 is a schematic cross-sectional view of the stopper, the limiting expansion block, the limiting fixture block, the expansion sleeve, the first trapezoidal slider, and the third return spring.

Number designation in the figures: 1. a first fixed block; 2. a first transmission chamber; 3. a first slide hole; 4. a second slide hole; 5. a first chute; 6. a second chute; 7. a second fixed block; 8. a transmission groove; 9. a first trapezoidal guide groove; 10. a third chute; 11. a third fixed block; 12. a second drive chamber; 13. a third slide hole; 14. a fourth chute; 15. a second trapezoidal guide groove; 16. a strand rod; 17. a fifth chute; 18. a swinging groove; 19. a scraper knife; 20. nesting the incisions; 21. first sharpening serrations; 22. a connecting rod; 23. a first slider; 24. fixing grooves; 25. a first return spring; 26. a second slider; 27. a second return spring; 28. a second rack; 29. a second gear; 30. a third rack; 31. a second trapezoidal guide block; 32. a second connecting block; 33. a trigger pin; 34. a swing rod; 35. triggering the chute; 36. arranging holes; 37. a convex cambered surface; 38. a pendulum shaft; 39. a third connecting block; 40. a saw blade; 41. second sharpening serrations; 42. an inner concave cambered surface; 43. a limiting clamping block; 44. a first connection block; 45. a first rack; 46. a first gear; 47. a telescopic sleeve; 48. a limiting chute; 49. a telescopic groove; 50. a first trapezoidal guide block; 51. a third return spring; 52. a limiting telescopic block; 53. and a stop block.

Detailed Description

As shown in fig. 1, 2 and 3, it includes a first fixed block 1, a first transmission cavity 2, a first sliding hole 3, a second sliding hole 4, a first sliding slot 5, a second sliding slot 6, a second fixed block 7, a transmission slot 8, a first trapezoidal guide slot 9, a third sliding slot 10, a third fixed block 11, a second transmission cavity 12, a third sliding hole 13, a fourth sliding slot 14, a second trapezoidal guide slot 15, a strand bar 16, a fifth sliding slot 17, a swing slot 18, a scraper 19, a nesting notch 20, a first cutting sawtooth 21, a connecting rod 22, a first slider 23, a fixed slot 24, a first return spring 25, a second slider 26, a second return spring 27, a second rack 28, a second gear 29, a third rack 30, a second trapezoidal guide block 31, a second connecting block 32, a trigger pin 33, a swing rod 34, a trigger sliding slot 35, a swing hole 36, an arc surface 42, a swing shaft 38, a third connecting block 39, a saw blade 40, a second cutting sawtooth 41, a second cutting edge, The outer convex arc surface 37, the limiting fixture block 43, the first connecting block 44, the first rack 45, the first gear 46, the telescopic sleeve 47, the limiting chute 48, the telescopic chute 49, the first trapezoidal guide block 50, the third return spring 51, the limiting telescopic block 52 and the stop block 53, wherein as shown in fig. 10, the first fixing block 1 is provided with a first transmission cavity 2; as shown in fig. 11, the upper end surface of the first fixing block 1 is provided with a first slide hole 3 communicated with the first transmission cavity 2; as shown in fig. 10, the lower end surface of the first fixing block 1 is provided with a second slide hole 4 communicated with the first transmission cavity 2; a first sliding chute 5 and a second sliding chute 6 which are communicated with the first transmission cavity 2 are formed in one side end face of the first fixing block 1, and the first sliding chute 5 is positioned above the second sliding chute 6 in an inclined mode; as shown in fig. 12, a fixing groove 24 is formed at the center of the lower end surface of the first slider 23; as shown in fig. 2 and 3, the first sliding block 23 is embedded into the upper end of the first transmission cavity 2 through the sliding fit of the side end surface and the inner wall of the first transmission cavity 2, and the notch of the fixing groove 24 is downward; as shown in fig. 1 and 3, one end of the connecting rod 22 passes through the first sliding hole 3 of the first fixed block 1 from top to bottom and is fixedly connected with the first sliding block 23; as shown in fig. 2 and 4, the second sliding block 26 is embedded into the first transmission cavity 2 through the sliding fit of the side end surface and the inner wall of the first transmission cavity 2, and is located between the first sliding chute 5 and the second sliding chute 6; the second return spring 27 is positioned at the lower end of the first transmission cavity 2, the upper end of the second return spring is connected with the lower end surface of the second sliding block 26, and the lower end of the second return spring is connected with the bottom surface of the first transmission cavity 2; the first return spring 25 is positioned between the first sliding block 23 and the second sliding block 26 in the first transmission cavity 2, the upper end of the first return spring enters the fixed groove 24 and is connected with the top surface of the fixed groove 24, and the lower end of the first return spring is connected with the second sliding block 26 below; one end of the second rack 28 passes through the second slide hole 4 from bottom to top and is connected with the second slide block 26.

As shown in fig. 13, a transmission groove 8 is formed on one side end surface of the second fixing block 7; a first trapezoidal guide groove 9 is formed in the bottom surface of the transmission groove 8 along the depth direction of the transmission groove 8, and the first trapezoidal guide groove 9 is communicated with the side end face of the second fixed block 7 on which the transmission groove 8 is formed; a third sliding chute 10 is arranged beside the first trapezoidal guide groove 9; as shown in fig. 3, the side end face of the second fixed block 7, on which the transmission groove 8 is formed, is fixedly connected with the side end face of the first fixed block 1, on which the first sliding groove 5 and the second sliding groove 6 are formed, and the first sliding groove 5 and the second sliding groove 6 are located in the transmission groove 8; as shown in fig. 4 and 7, the first gear 46 is mounted in the transmission groove 8 through a shaft; the first connecting block 44 penetrates through the first sliding groove 5 and is fixedly connected with the side end face of the first sliding block 23; as shown in fig. 3, the first rack 45 is located in the transmission groove 8, and the upper end thereof is fixedly connected with the first connecting block 44, and the lower end thereof is engaged with the first gear 46; as shown in fig. 4, the lower end of the first rack 45 is engaged with the third chute 10 below; as shown in fig. 21, the upper end surface of the telescopic bush 47 is a tooth surface; a limit chute 48 is arranged in the telescopic sleeve 47; an end face of one end of the telescopic sleeve 47 is provided with a telescopic groove 49 communicated with the limit sliding groove 48; as shown in fig. 22, a first trapezoidal guide block 50 is mounted on the lower end surface of the telescopic sleeve 47; as shown in fig. 3 and 7, the telescopic sleeve 47 is mounted on the bottom surface of the transmission groove 8 through the sliding fit of the first trapezoidal guide block 50 and the first trapezoidal guide groove 9, and the telescopic sleeve 47 is meshed with the first gear 46 above; as shown in fig. 2 and 22, one end of the limit expansion block 52 passes through the expansion slot 49 and is inserted into the limit sliding slot 48; as shown in fig. 22, two limiting blocks 43 are mounted at one end of the limiting telescopic block 52 inserted into the limiting sliding groove 48, and the two limiting blocks 43 are in sliding fit with the limiting sliding groove 48; as shown in fig. 2 and 22, one end of the limiting telescopic block 52, which is not inserted into the telescopic slot 49, passes through the second sliding slot 6 to be matched with the first sliding block 23 positioned above the second sliding slot; the stop block 53 is arranged at the lower end of the limit telescopic block 52, and the stop block 53 is positioned in the first transmission cavity 2; the third return spring 51 is located in the limiting sliding groove 48, and one end of the third return spring is connected with the end face of the limiting telescopic block 52, and the other end of the third return spring is connected with the inner wall of the limiting sliding groove 48.

As shown in fig. 14, a second transmission cavity 12 is formed in the third fixing block 11; the upper end surface of the third fixed block 11 is provided with a third sliding hole 13 communicated with the second transmission cavity 12; as shown in fig. 15, a fourth sliding groove 14 communicated with the second transmission cavity 12 is formed on the lower end surface of the third fixing block 11; a second trapezoidal guide groove 15 is formed in one side wall of the second transmission cavity 12 along the horizontal direction; as shown in fig. 3, the third fixing block 11 is installed at the lower end of the first fixing block 1, and the third sliding hole 13 is butted with the second sliding hole 4; the lower end of a second rack 28 positioned outside the first fixed block 1 penetrates through the third sliding hole 13 from top to bottom to enter the second transmission cavity 12; a second gear 29 is mounted in the second transmission chamber 12 by a shaft, and the second gear 29 is meshed with the second rack 28; as shown in fig. 5 and 6, a second trapezoidal guide block 31 is mounted on a side end surface of the third rack 30; the third rack 30 is installed in the second transmission cavity 12 through the sliding fit of the second trapezoidal guide block 31 and the second trapezoidal guide groove 15, and the third rack 30 is meshed with the second gear 29 above; the upper end of the second connecting block 32 penetrates through the fourth chute 14 from bottom to top to be fixedly connected with the third rack 30; the trigger pin 33 is installed on the side end face of the lower end of the second connecting block 32; as shown in fig. 17, the lower end of the strand 16 is provided with an outward cambered surface 37; as shown in fig. 18, the upper end of the strand rod 16 is provided with a fifth chute 17; a swing groove 18 which is communicated with the lower end of the strand rod 16 is formed in the bottom surface of the fifth sliding groove 17; as shown in fig. 5, 6 and 8, the strand rod 16 is installed at the lower end of the third fixing block 11, and the fifth slide groove 17 is butted with the fourth slide groove 14; as shown in fig. 6, the lower end of the second connecting block 32 is located in the fifth slide groove 17, and the trigger pin 33 is located above the swing groove 18; as shown in fig. 16, a nesting notch 20 is formed at the center of the upper end of the shovel blade 19; the lower end of the scraper knife 19 is provided with a concave first edging saw tooth 21; as shown in fig. 5 and 8, the scraper knife 19 is installed at the lower end of the third fixing block 11, and the strand bar 16 is inserted into the nesting notch 20; the side wall of the strand rod 16 is fixedly connected with the inner wall of the nesting notch 20 in the scraper knife 19; as shown in fig. 19, a through trigger chute 35 is formed on the side end surface of the upper end of the swing link 34; a swing hole 36 is formed in the lower center of the swing rod 34; as shown in fig. 5 and 8, the swing link 34 is installed in the swing slot 18 through a swing shaft 38, and the upper end thereof is nested on the trigger pin 33 through the trigger chute 35 and the sliding and rotating fit outside the trigger pin 33; as shown in fig. 8 and 9, a third connecting block 39 is mounted at the lower end of the swing link 34; as shown in fig. 20, the upper end of the saw blade 40 is provided with a concave arc surface 42; the lower end of the saw blade 40 is provided with a second sharpening sawtooth 41 with a certain radian; as shown in fig. 9, two saw blades 40 are installed on both sides of the third connecting block 39, and the two saw blades 40 are respectively in contact sliding fit with both side surfaces of the blade 19; the concave arc surfaces 42 of the two saw blades 40 are respectively in contact fit with the convex arc surfaces 37 of the lower ends of the strands 16.

As shown in fig. 2 and 3, the first return spring 25 is a compression spring, and the first return spring 25 is in a pre-compressed state in an initial state.

As shown in fig. 3 and 4, the second return spring 27 is a compression spring, and the second return spring 27 is in a pre-compressed state in an initial state.

As shown in fig. 3, the first return spring 25 and the second return spring 27 have the same biasing force on the second slider 26 in the initial state.

As shown in fig. 22, the third return spring 51 is a compression spring.

As shown in fig. 2 and 22, the side end surface of the stopper 53 is flush with the end surface of the limit expansion block 52 extending into the first transmission chamber 2.

As shown in fig. 5 and 8, the second connecting block 32 is located on one side of the fourth sliding groove 14 in the initial state.

As shown in fig. 8 and 9, the arc center axis of the concave arc surface 42 at the upper end of the saw blade 40 coincides with the arc center axis of the convex arc surface 37 at the lower end of the strand 16.

As shown in fig. 8, the arc center axis of the concave arc surface 42 coincides with the center axis of the pendulum shaft 38; the arc center axis of the convex arc surface 37 is coincident with the central axis of the pendulum shaft 38.

As a further improvement of the present technology, the second sharpening serration 41 has a certain curvature, and the center axis of the curvature coincides with the center axis of the pendulum shaft 38.

The design purpose of the swing hole 36 which is positioned at the lower part of the center of the swing rod 34 in the invention is to ensure that the swing amplitude of the saw blade 40 along with the swing rod 34 around the central axis of the swing shaft 38 is large, and simultaneously ensure that the torque of the torque generated by the trigger pin 33 to the swing rod 34 is larger than the torque of the torque generated by the tree root or brick stone to the swing rod 34 through the saw blade 40, so that the trigger pin 33 triggers the swing rod 34 to swing to overcome the obstruction of the tree root or brick stone more easily and saw the tree root or brick stone repeatedly, the tree root or brick stone is cut off in a short time, and the tree transplanting efficiency is improved.

The design purpose of the invention that the first return spring 25 is in a pre-compression state in the initial state and the second return spring 27 is in a pre-compression state in the initial state is that the first return spring 25 and the second return spring 27 are not deformed before encountering tree roots or bricks and stones, and the first sliding block 23 and the second sliding block 26 do not move relative to the first fixed block 1; the movement of the connecting rod 22 driven by the vibration device is integrated and synchronous with the movement of the first fixed block 1, the second fixed block 7, the third fixed block 11, the strand rod 16 and the scraper knife 19; it is ensured that the saw blades 40 distributed on both sides of the blade 19 do not swing around the central axis of the swing shaft 38 before the blade 19 meets the tree root or the brick stone.

The purpose of the design that the acting force of the first return spring 25 and the acting force of the second return spring 27 on the second sliding block 26 are equal in the initial state is that when the scraper knife 19 meets a tree root or a brick stone, the connecting rod 22 drives the first sliding block 23 to slide relative to the first fixed block 1 under the repeated vibration of the vibration device and the prevention of the tree root or the brick stone; the first return spring 25 is repeatedly further compressed; the first sliding block 23 drives the first rack 45 to move up and down repeatedly through the first connecting block 44; the first rack 45 drives the first gear 46 to rotate repeatedly; the first gear 46 drives the telescopic sleeve 47 to move repeatedly along the first trapezoidal guide groove 9; when the first return spring 25 is compressed, the first rack 45 is driven by the first slider 23 to move downwards, and the first gear 46 drives the telescopic sleeve 47 to move towards the transmission groove 8 along the first trapezoidal guide groove 9; the telescopic sleeve 47 drives the limit telescopic block 52 to retract towards the transmission groove 8 through two limit clamping blocks 43 fixedly connected with the limit telescopic block 52; the limiting telescopic block 52 is gradually separated from the second slide block 26 above, and when the first return spring 25 is compressed for a certain length, the limiting telescopic block 52 is just separated from the second slide block 26 under the pulling of the telescopic sleeve 47 and the limitation on the second slide block 26 is removed; because the acting forces of the first return spring 25 and the second return spring 27 on the second slide block 26 are equal in the initial state, when the limit telescopic block 52 is separated from the second slide block 26, the downward acting force of the first return spring 25 on the second slide block 26 is far greater than the upward acting force of the second return spring 27 on the second slide block 26, and the second slide block 26 instantaneously moves downward along the inner wall of the first transmission cavity 2; since the side end surface of the stop block 53 is flush with the end surface of the limit expansion block 52 extending into the first transmission cavity 2, the second slide block 26 is in contact fit with the stop block 53 immediately after being separated from the limit expansion block 52; the second slide block 26 drives a second gear 29 to rotate through a second rack 28 connected with the second slide block; the second gear 29 drives the second connecting block 32 and the trigger pin 33 to slide to the other side of the fourth chute 14 through the third rack 30; the trigger pin 33 drives the swing rod 34 to swing around the central axis of the swing shaft 38; the swing link 34 drives the two saw blades 40 to swing to one side simultaneously around the central axis of the swing shaft 38 through a third connecting block 39; the oscillating saw blade 40 saws the roots or bricks and stones contacted with the oscillating saw blade; when the vibration device drives the first sliding block 23 to move upwards through the connecting rod 22, the first return spring 25 gradually recovers towards the initial state, and the first sliding block 23 drives the first rack 45 to move upwards through the first connecting block 44; the first rack 45 drives the telescopic sleeve 47 to slide towards the first fixed block 1 through the first gear 46; since the stopper 53 fixedly connected with the limit expansion block 52 is in contact fit with the second slider 26, the third return spring 51 is gradually compressed; when the connecting rod 22 drives the second sliding block 26 to move upwards and pass through the limit telescopic block 52 through the first sliding block 23, the first return spring 25 and the second return spring 27, the third return spring 51 is compressed to the limit, under the action of the third return spring 51, the limit telescopic block 52 moves towards the second transmission cavity 12 along the telescopic groove 49 and recovers the limit of the second sliding block 26, and the third return spring 51 recovers the original state; meanwhile, the second slider 26 drives the second gear 29 to rotate reversely through the second rack 28; the second gear 29 drives the trigger pin 33 to move to the initial position through the third rack 30 and the second connecting block 32; the trigger pin 33 drives the swing rod 34 to swing towards the initial external position; the swing rod 34 drives the two saw blades 40 to swing around the central axis of the swing shaft 38 to the initial position, and then the tree roots or the brick stones are sawed reversely; under the drive of the vibration device, the two saw blades 40 swing around the central axis of the swing shaft 38 in such a reciprocating way, so as to saw the roots or the bricks and stones repeatedly at high frequency; when the saw blade 40 saws the tree roots or brick stones, the resistance of the tree roots or brick stones to the scraper knife 19 disappears, the first slide block 23 and the second slide block 26 return to the initial positions under the action of the first return spring 25 and the second return spring 27, and the limit telescopic block 52 returns to the initial positions and restores the limit of the second slide block 26 under the action of the stop block 53 and the third return spring 51; the two saw blades 40 do not swing any more until the blade 19 continues to move downwards and meets the tree root or brick again, and the pre-compressed first and second return springs 25 and 27 synchronize the movement of the first and second fixing blocks 1 and 7 and 11 and the strand 16 and the blade 19 integrally.

In the invention, the arc center axis of the concave cambered surface 42 at the upper end of the saw blade 40 is superposed with the arc center axis of the convex cambered surface 37 at the lower end of the strand rod 16, and the arc center axis of the concave cambered surface 42 is superposed with the central axis of the swing shaft 38; the design purpose of the coincidence of the arc center axis of the convex arc surface 37 and the central axis of the pendulum shaft 38 is to ensure that the saw blade 40 is not blocked due to the interference of the lower end of the strand rod 16 in the swinging process.

The second cutting-edge saw teeth 41 have a certain radian, and the design purpose that the arc center axis of the second cutting-edge saw teeth is coincident with the central axis of the swing shaft 38 is to ensure that the second cutting-edge saw teeth 41 on the saw blade 40 do not always separate from the tree roots or the brick stones and interact with the tree roots or the brick stones until the tree roots or the brick stones are sawn off in the process that the saw blade 40 swings around the swing shaft 38.

The working process of the invention is as follows: when the scraper knife 19 meets the tree root or the brick stone, the connecting rod 22 drives the first sliding block 23 to slide relative to the first fixing block 1 under the repeated vibration of the vibration device and the prevention of the tree root or the brick stone; the first return spring 25 is repeatedly further compressed; the first sliding block 23 drives the first rack 45 to move up and down repeatedly through the first connecting block 44; the first rack 45 drives the first gear 46 to rotate repeatedly; the first gear 46 drives the telescopic sleeve 47 to move repeatedly along the first trapezoidal guide groove 9.

When the first return spring 25 is compressed, the first rack 45 is driven by the first slider 23 to move downwards, and the first gear 46 drives the telescopic sleeve 47 to move towards the transmission groove 8 along the first trapezoidal guide groove 9; the telescopic sleeve 47 drives the limit telescopic block 52 to retract towards the transmission groove 8 through two limit clamping blocks 43 fixedly connected with the limit telescopic block 52; the limiting telescopic block 52 is gradually separated from the second slide block 26 above, and when the first return spring 25 is compressed for a certain length, the limiting telescopic block 52 is just separated from the second slide block 26 under the pulling of the telescopic sleeve 47 and the limitation on the second slide block 26 is removed; because the acting forces of the first return spring 25 and the second return spring 27 on the second slide block 26 are equal in the initial state, when the limit telescopic block 52 is separated from the second slide block 26, the downward acting force of the first return spring 25 on the second slide block 26 is far greater than the upward acting force of the second return spring 27 on the second slide block 26, and the second slide block 26 instantaneously moves downward along the inner wall of the first transmission cavity 2; since the side end surface of the stop block 53 is flush with the end surface of the limit expansion block 52 extending into the first transmission cavity 2, the second slide block 26 is in contact fit with the stop block 53 immediately after being separated from the limit expansion block 52; the second slide block 26 drives a second gear 29 to rotate through a second rack 28 connected with the second slide block; the second gear 29 drives the second connecting block 32 and the trigger pin 33 to slide to the other side of the fourth chute 14 through the third rack 30; the trigger pin 33 drives the swing rod 34 to swing around the central axis of the swing shaft 38; the swing link 34 drives the two saw blades 40 to swing to one side simultaneously around the central axis of the swing shaft 38 through a third connecting block 39; the oscillating saw blade 40 saws the roots or bricks and stones contacted with the oscillating saw blade; when the vibration device drives the first sliding block 23 to move upwards through the connecting rod 22, the first return spring 25 gradually recovers towards the initial state, and the first sliding block 23 drives the first rack 45 to move upwards through the first connecting block 44; the first rack 45 drives the telescopic sleeve 47 to slide towards the first fixed block 1 through the first gear 46; since the stopper 53 fixedly connected with the limit expansion block 52 is in contact fit with the second slider 26, the third return spring 51 is gradually compressed; when the connecting rod 22 drives the second sliding block 26 to move upwards and pass through the limit telescopic block 52 through the first sliding block 23, the first return spring 25 and the second return spring 27, the third return spring 51 is compressed to the limit, under the action of the third return spring 51, the limit telescopic block 52 moves towards the second transmission cavity 12 along the telescopic groove 49 and recovers the limit of the second sliding block 26, and the third return spring 51 recovers the original state; meanwhile, the second slider 26 drives the second gear 29 to rotate reversely through the second rack 28; the second gear 29 drives the trigger pin 33 to move to the initial position through the third rack 30 and the second connecting block 32; the trigger pin 33 drives the swing rod 34 to swing towards the initial external position; the swing rod 34 drives the two saw blades 40 to swing around the central axis of the swing shaft 38 to the initial position, and then the tree roots or the brick stones are sawed reversely; under the drive of the vibration device, the two saw blades 40 swing around the central axis of the swing shaft 38 in such a reciprocating way, so as to saw the roots or the bricks and stones repeatedly at high frequency; when the saw blade 40 saws the tree roots or brick stones, the resistance of the tree roots or brick stones to the scraper knife 19 disappears, the first slide block 23 and the second slide block 26 return to the initial positions under the action of the first return spring 25 and the second return spring 27, and the limit telescopic block 52 returns to the initial positions and restores the limit of the second slide block 26 under the action of the stop block 53 and the third return spring 51; the two saw blades 40 do not swing any more until the blade 19 continues to move downwards and meets the tree root or brick again, and the pre-compressed first and second return springs 25 and 27 synchronize the movement of the first and second fixing blocks 1 and 7 and 11 and the strand 16 and the blade 19 integrally.

In conclusion, the invention has the beneficial effects that: when the transplanting device of the invention transplants trees, under the high-frequency small-amplitude vibration traction of the vibration device, the shovel blade 19 moves to the soil around the trees without obstruction; when encountering a tree root or a brick stone, the saw blades 40 positioned at two sides of the scraper knife 19 repeatedly swing around the central axis of the swing shaft 38, the two saw blades 40 repeatedly saw the encountered tree root and brick at high frequency, and the shearing function of the reciprocating vibration of the scraper knife 19 on the tree root or the brick and the sawing function of the two saw blades 40 on the tree root or the brick jointly exert the cutting function on the tree root or the brick, so that thicker tree root or brick stones are more easily cut off, the tree transplanting time is shortened, and the tree transplanting working efficiency is improved.

Claims

1. The utility model provides a municipal administration trees transplanting device which characterized in that: the device comprises a first fixed block, a first transmission cavity, a first sliding hole, a second sliding hole, a first sliding chute, a second fixed block, a transmission groove, a first trapezoidal guide groove, a third sliding chute, a third fixed block, a second transmission cavity, a third sliding hole, a fourth sliding chute, a second trapezoidal guide groove, a strand rod, a fifth sliding chute, a swinging groove, a scraper, a nested notch, a first sharpening sawtooth, a connecting rod, a first sliding block, a fixed groove, a first reset spring, a second sliding block, a second reset spring, a second rack, a second gear, a third rack, a second trapezoidal guide block, a second connecting block, a trigger pin, a swinging rod, a trigger sliding chute, a swinging hole, an inward-concave cambered surface, a swinging shaft, a third connecting block, a saw blade, a second sharpening sawtooth, an outward-convex cambered surface, a limiting clamping block, a first connecting block, a first rack, a first gear, a telescopic sleeve, a limiting sliding chute, a telescopic groove, a first trapezoidal guide block, a second trapezoidal guide block, a, The first fixing block is internally provided with a first transmission cavity; the upper end surface of the first fixed block is provided with a first sliding hole communicated with the first transmission cavity; the lower end face of the first fixed block is provided with a second sliding hole communicated with the first transmission cavity; a first sliding groove and a second sliding groove which are communicated with the first transmission cavity are formed in one side end face of the first fixing block, and the first sliding groove is positioned obliquely above the second sliding groove; a fixed groove is formed in the center of the lower end face of the first sliding block; the first sliding block is embedded into the upper end of the first transmission cavity through the sliding fit of the side end face of the first sliding block and the inner wall of the first transmission cavity, and the notch of the fixing groove faces downwards; one end of the connecting rod penetrates through a first sliding hole in the first fixed block from top to bottom to be fixedly connected with the first sliding block; the second sliding block is embedded into the first transmission cavity through the sliding fit of the side end face of the second sliding block and the inner wall of the first transmission cavity and is positioned between the first sliding groove and the second sliding groove; the second reset spring is positioned at the lower end of the first transmission cavity, the upper end of the second reset spring is connected with the lower end surface of the second sliding block, and the lower end of the second reset spring is connected with the bottom surface of the first transmission cavity; the first reset spring is positioned between the first sliding block and the second sliding block in the first transmission cavity, the upper end of the first reset spring enters the fixed groove and is connected with the top surface of the fixed groove, and the lower end of the first reset spring is connected with the second sliding block below the fixed groove; one end of the second rack penetrates through the second sliding hole from bottom to top and is connected with the second sliding block;

a transmission groove is formed in one side end face of the second fixed block; a first trapezoidal guide groove is formed in the bottom surface of the transmission groove along the depth direction of the transmission groove and communicated with the side end face of the second fixed block, wherein the transmission groove is formed in the second fixed block; a third sliding chute is arranged beside the first trapezoidal guide groove; the side end face of the second fixed block, which is provided with the transmission groove, is fixedly connected with the side end face of the first fixed block, which is provided with the first sliding groove and the second sliding groove, and the first sliding groove and the second sliding groove are positioned in the transmission groove; the first gear is arranged in the transmission groove through a shaft; the first connecting block penetrates through the first sliding groove and is fixedly connected with the side end face of the first sliding block; the first rack is positioned in the transmission groove, the upper end of the first rack is fixedly connected with the first connecting block, and the lower end of the first rack is meshed with the first gear; the lower end of the first rack is matched with a third sliding chute below the first rack; the upper end surface of the telescopic sleeve is a tooth surface; a limit chute is arranged in the telescopic sleeve; the end surface of one end of the telescopic sleeve is provided with a telescopic groove communicated with the limiting sliding groove; the lower end surface of the telescopic sleeve is provided with a first trapezoidal guide block; the telescopic sleeve is arranged on the bottom surface of the transmission groove through the sliding fit of the first trapezoidal guide block and the first trapezoidal guide groove, and the telescopic sleeve is meshed with the first gear above the telescopic sleeve; one end of the limiting telescopic block penetrates through the telescopic groove and is inserted into the limiting sliding groove; one end of the limiting telescopic block inserted into the limiting sliding groove is provided with two limiting clamping blocks, and the two limiting clamping blocks are in sliding fit with the limiting sliding groove; one end of the limiting telescopic block, which is not inserted into the telescopic groove, passes through the second sliding groove to be matched with the first sliding block positioned above the limiting telescopic block; the stop block is arranged at the lower end of the limiting telescopic block and is positioned in the first transmission cavity; the third return spring is positioned in the limiting sliding groove, one end of the third return spring is connected with the end face of the limiting telescopic block, and the other end of the third return spring is connected with the inner wall of the limiting sliding groove;

2. The municipal tree transplanting device according to claim 1, wherein: the first return spring is a compression spring, and the first return spring is in a pre-compression state in an initial state.

3. The municipal tree transplanting device according to claim 1, wherein: the second return spring is a compression spring, and the second return spring is in a pre-compression state in an initial state.

4. The municipal tree transplanting device according to claim 2 or 3, wherein: the acting force of the first return spring and the acting force of the second return spring on the second sliding block are equal in the initial state.

5. The municipal tree transplanting device according to claim 1, wherein: the third return spring is a compression spring.

6. The municipal tree transplanting device according to claim 1, wherein: the side end face of the stop block is flush with the end face of one end of the limiting telescopic block extending into the first transmission cavity.

7. The municipal tree transplanting device according to claim 1, wherein: the second connecting block is positioned at one side of the fourth sliding chute in an initial state.

8. The municipal tree transplanting device according to claim 1, wherein: the arc center axis of the concave cambered surface at the upper end of the saw blade is superposed with the arc center axis of the convex cambered surface at the lower end of the strand rod.

9. The municipal tree transplanting device according to claim 8, wherein: the arc center axis of the concave cambered surface is superposed with the central axis of the pendulum shaft; the arc center axis of the convex cambered surface is superposed with the central axis of the pendulum shaft.

10. The municipal tree transplanting device according to claim 1, wherein: the second sharpening saw tooth has a certain radian, and the axis of the arc center of the second sharpening saw tooth is coincided with the central axis of the swing shaft.