Self-propelled tree digging machine

Abstract

The present invention discloses a self-propelled tree digging machine, including a crawler vehicle, a rear hydraulic support column is installed on the back of the crawler vehicle, an inner driving rod is installed at the inner center of the connecting sleeve through a bearing seat, and one end of the inner driving rod is welded and fixed to the center of the outer gear, and a driving gear is fixedly installed at the other end of the inner driving rod, the driving gear is connected to both ends of a chain mechanism, and the middle of the chain mechanism is installed on a guide mechanism, and a positioning plate is bolted to the end of the guide mechanism, and the other end of the positioning plate is connected and fixed to the end of the connecting sleeve by bolts, and a locking mechanism is arranged on the top of the positioning plate, and a corrugated flushing pipe is installed on one side of the inside of the tree digging bracket. The present invention ensures the stability of the tree digging mechanism during operation through a new support and adjustment structure, and the tree digging mechanism can rotate to cut a hemispherical soil ball, which not only ensures that the diameter of the soil ball is sufficient, but also can quickly cut off all roots, making it more convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of tree digging devices, in particular to a self-propelled tree digging machine. Background Art

[0002] In the process of planting and cultivating trees in gardens, the tree seedlings are first planted densely at equal intervals on the land. When the age, diameter or height of the tree seedlings reaches the standards for transplanting or selling, they are dug out together with the soil at the roots, and the outside of the soil is wrapped with straw ropes or other items with similar functions to retain moisture and fix the soil. Then they can be transported to the transplanting destination, and transplanting pits are dug at the transplanting destination for transplanting.

[0003] At present, when digging trees that have reached the standards for transplanting or selling, for smaller trees, manual hand-held tools such as shovels or single-person small shovel-type tree diggers are used to dig around the soil near the roots of the trees to obtain trees with soil balls. For some larger trees, large multi-petal knife-shovel-type tree diggers are used for direct digging. Manual hand-held tools such as shovels or single-person small shovel-type tree diggers are used to dig trees, which is time-consuming and labor-intensive, and cannot retain a uniform soil ball, is inconvenient for transplanting, and cannot easily cut off the root system. Large multi-petal knife-shovel-type tree diggers are expensive, and the diameter of the soil retained at the roots is small, so they are not suitable for digging trees with roots scattered in shallow soil layers.

[0004] Therefore need to design a kind of self-propelled tree digging machine for the above problems. Summary of the invention

[0005] The object of the present invention is to provide a self-propelled tree digging machine to solve the problem proposed in the above background technology that trees are dug by manual hand-held tools such as shovels or single-person small shovel-type tree digging machines, which is time-consuming and labor-intensive, cannot retain a uniform soil ball, is inconvenient for transplanting, and cannot easily cut off the root system; large multi-petal shovel-type tree digging machines are expensive, and the diameter of the soil retained at the roots is small, which is not suitable for digging trees with roots scattered in shallow soil layers.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-propelled tree digging machine, comprising a crawler vehicle, a rear hydraulic support column is installed on the back of the crawler vehicle, and a boom is fixedly installed on the front center of the crawler vehicle, and side hydraulic support arms are installed on both sides of the front end of the crawler vehicle, the bottom of the front end of the crawler vehicle is connected to one end of the suspension mechanism, and the other end of the suspension mechanism is connected to the front end cross beam of the crawler vehicle, the first mounting seat and the second mounting seat, and the first mounting seat and the second mounting seat are welded and fixed to the center of the outer side of the tree digging bracket, a positioning plug plate is installed at the end of the tree digging bracket, and a first motor and a second motor are fixedly installed in the middle of the inner side of the tree digging bracket, and outer chains are installed on the sprockets at both ends of the output shaft of the first motor, and inner chains are installed on the sprockets at both ends of the output shaft of the second motor, and the other end of the outer chain is installed on the outer gear. The other end of the inner chain is installed on the inner gear, and the inner gear is fixedly installed on one end of the outer side of the connecting sleeve, and the outer side of the connecting sleeve is connected to the inner wall of the positioning seat through a bearing, and the positioning seat is fixed on the inner wall of the end of the tree digging bracket. An inner driving rod is installed at the inner center of the connecting sleeve through a bearing seat, and one end of the inner driving rod is welded and fixed to the center of the outer gear, and a driving gear is fixedly installed on the other end of the inner driving rod. The driving gear is connected to both ends of the chain mechanism, and the middle part of the chain mechanism is installed on the guide mechanism, and a positioning plate is bolted to the end of the guide mechanism, and the other end of the positioning plate is bolted and fixed to the end of the connecting sleeve by bolts, and a locking mechanism is arranged on the top of the positioning plate, a corrugated flushing pipe is installed on one side of the inside of the tree digging bracket, and a lubricating oil nozzle for lubricating the chain mechanism is installed on the other side of the tree digging bracket.

[0007] Preferably, the rear hydraulic support column and the side hydraulic support arm are symmetrically distributed about the crawler vehicle, and a serrated gripping plate is installed at the end of the side hydraulic support arm through an axle pin.

[0008] Preferably, the suspension mechanism includes a receiving suspension frame, a connecting right-angle frame, a first hydraulic rod and a second hydraulic rod, and one end of the receiving suspension frame is installed with the connecting right-angle frame through an axle pin, and the first hydraulic rod and the second hydraulic rod are installed on the inner side of the middle part of the receiving suspension frame through an axle pin, and the other end of the receiving suspension frame is installed on the first mounting seat through an axle pin, the top end of the first hydraulic rod is installed on the front end beam of the crawler vehicle through an axle pin, and the second hydraulic rod is installed on the second mounting seat through an end axle pin.

[0009] Preferably, the receiving suspension frame forms a rotating mechanism with the connecting right-angle frame and the first mounting seat through axle pins at both ends, and the receiving suspension frame forms a rotating mechanism with the first hydraulic rod and the second hydraulic rod through two groups of axle pins distributed in parallel on the inner side of the middle part, and the first hydraulic rod forms a rotating mechanism with the front beam of the crawler vehicle through the end axle pin, and the second hydraulic rod forms a rotating mechanism with the second mounting seat through the end axle pin.

[0010] Preferably, the top view shape of the tree-digging support is a "C" shape, and a positioning insertion plate is vertically installed at the end of the tree-digging support, and the positioning insertion plate is an arc-shaped thick plate with a sharp bottom end.

[0011] Preferably, the centers of the outer gear, the inner gear, the connecting sleeve, the positioning seat, the inner driving rod, and the driving gear are on the same horizontal straight line, and the outer gear, the inner gear, the connecting sleeve, the positioning seat, the inner driving rod, and the driving gear are symmetrically distributed at the end of the tree-digging support.

[0012] Preferably, the chain mechanism includes a tree-digging chain and chain particles, and the chain particles are installed on the tree-digging chain, and the inner sides of both ends of the tree-digging chain are meshed and connected with the driving gear. The length of the chain mechanism is longer than the length of the guiding mechanism.

[0013] Preferably, the guiding mechanism includes a guiding plate and guiding tracks. The guiding tracks are fixed on both the top surface and the bottom surface of the guiding plate, and the guiding tracks are connected with the tree-digging chain. The guiding plate and the guiding tracks are both arranged in an arc shape, and positioning plates are fixed at both ends of the guiding plate through bolts.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The rear hydraulic support column and the side hydraulic support arm are adopted to ensure the stability of the tracked vehicle during the excavation process. With the design of the suspension mechanism, the position of the tree-digging support can be adjusted stably. Coupled with the setting of the positioning insertion plate, it can ensure that the tree-digging structure installed inside the tree-digging support has sufficient stability during operation.

[0016] 2. The first motor and the second motor installed inside the tree-digging support drive the outer chain and the inner chain to move respectively, and then drive the outer gear and the inner gear to rotate respectively. Finally, power transmission is carried out through the connecting sleeve, the positioning seat, the inner driving rod, and the driving gear, so that the chain mechanism moves along the guiding mechanism to realize the cutting of the soil and the roots. At the same time, the guiding mechanism can also drive the chain mechanism to rotate, so that the chain mechanism can cut out a hemispherical soil ball, which not only ensures that the diameter of the soil ball is sufficient, but also can quickly cut off all the roots, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0018] Figure 2 It is a front three-dimensional structure schematic diagram of the present invention.

[0019] Figure 3 It is a bottom three-dimensional structure schematic diagram of the present invention.

[0020] Figure 4 It is a three-dimensional structure schematic diagram of the suspension mechanism and the tree-digging support of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the tree digging support in top section according to the present invention.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the external gear and the internal gear of the present invention.

[0023] Figure 7 It is a schematic diagram of the top-down structure of the tree digging support of the present invention.

[0024] Figure 8 It is a schematic diagram of the front cross-sectional structure of the external gear and the internal gear of the present invention.

[0025] Fig. 9 It is a schematic diagram of the front cross-sectional structure of the locking mechanism of the present invention.

[0026] Fig.10 It is a schematic diagram of the side structure of the outer chain and the inner chain of the present invention.

[0027] Fig.11 It is a schematic diagram of the three-dimensional structure of the chain mechanism and the guide mechanism of the present invention.

[0028] Fig.12 It is a schematic diagram of the three-dimensional structure of the guide mechanism of the present invention.

[0029] In the figure: 1. crawler vehicle; 2. rear hydraulic support column; 3. boom; 4. side hydraulic support arm; 5. suspension mechanism; 501. receiving suspension frame; 502. connecting right-angle frame; 503. first hydraulic rod; 504. second hydraulic rod; 6. tree digging support; 601. first mounting seat; 602. second mounting seat; 7. positioning plug plate; 8. first motor; 9. second motor; 10. outer chain; 11. inner chain; 12. outer gear; 13. inner gear; 14. connecting sleeve; 15. positioning seat; 16. inner driving rod; 17. driving gear; 18. chain mechanism; 1801. digging chain; 1802. chain particles; 19. guide mechanism; 1901. guide plate; 1902. guide track; 20. positioning plate; 21. locking mechanism; 22. corrugated flushing pipe; 23. lubricating oil nozzle. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-12, an embodiment of the present invention: a self-propelled tree digging machine, including a crawler 1, a rear hydraulic support column 2, a boom 3, a side hydraulic support arm 4, a suspension mechanism 5, a receiving suspension frame 501, a connecting right-angle frame 502, a first hydraulic rod 503, a second hydraulic rod 504, a tree digging bracket 6, a first mounting seat 601, a second mounting seat 602, a positioning plug plate 7, a first motor 8, a second motor 9, an outer chain 10, an inner chain 11, an outer gear 12, an inner gear 13, a connecting sleeve 14, a positioning seat 15, an inner driving rod 16, a driving gear 17, a chain mechanism 18, a pit digging chain 1801, a chain particle 1802, a guide mechanism 19, a guide plate 1901, a guide track 1902, a positioning plate 20, a locking mechanism 21 and a ripple flushing Tube 22, a rear hydraulic support column 2 is installed on the back of the crawler vehicle 1, and a lifting arm 3 is fixedly installed at the center of the front end of the crawler vehicle 1, which is convenient for lifting trees when the root system is cut, and meets the needs of tree transfer after the cutting is completed, and side hydraulic support arms 4 are installed on both sides of the front end of the crawler vehicle 1, the bottom of the front end of the crawler vehicle 1 is connected to one end of the suspension mechanism 5, and the other end of the suspension mechanism 5 is connected to the front end beam of the crawler vehicle 1, the first mounting seat 601 and the second mounting seat 602, and the first mounting seat 601 and the second mounting seat 602 are welded and fixed to the center of the outer side of the tree digging bracket 6, a positioning plug plate 7 is installed at the end of the tree digging bracket 6, and a first motor 8 and a second motor 9 are fixedly installed in the middle of the inner side of the tree digging bracket 6, and an outer chain 1 is installed on the sprockets at both ends of the output shaft of the first motor 8 0, and at the same time, an inner chain 11 is installed on the sprockets at both ends of the output shaft of the second motor 9, and the other end of the outer chain 10 is installed on the outer gear 12, and the other end of the inner chain 11 is installed on the inner gear 13, and the inner gear 13 is fixedly installed on one end of the outer side of the connecting sleeve 14, and the outer side of the connecting sleeve 14 is connected to the inner wall of the positioning seat 15 through a bearing, and the positioning seat 15 is fixed on the inner wall of the end of the tree digging bracket 6, and an inner driving rod 16 is installed at the inner center of the connecting sleeve 14 through a bearing seat, and one end of the inner driving rod 16 is welded and fixed to the center of the outer gear 12, and a driving gear 17 is fixedly installed at the other end of the inner driving rod 16, and the driving gear 17 is connected to both ends of the chain mechanism 18, and the middle part of the chain mechanism 18 is installed on the guide mechanism 19, and the end of the guide mechanism 19 A positioning plate 20 is fixed with bolts, and the other end of the positioning plate 20 is connected and fixed to the end of the connecting sleeve 14 by bolts. A locking mechanism 21 is arranged on the top of the positioning plate 20. A corrugated flushing pipe 22 is installed on one side of the inside of the tree digging bracket 6, and a lubricating oil nozzle 23 for lubricating the chain mechanism 18 is installed on the other side of the tree digging bracket 6. The lubricating oil nozzle 23 can be connected to an external pipeline for lubricating oil spraying. The present invention ensures the stability of the tree digging machine under jungle slope conditions through multi-point support and related angle adjustment structures, and prevents the whole machine from overturning during the lifting process. The arc chain saw tree digging mechanism can rotate while cutting to cut a hemispherical soil ball, which can not only quickly cut off the underground root system, but also retain the root soil ball, thereby improving the survival rate of tree transplanting.

[0035] In this example, the rear hydraulic support column 2 and the side hydraulic support arm 4 are symmetrically distributed with respect to the tracked vehicle 1. Moreover, a serrated grab floor is installed at the end of the side hydraulic support arm 4 through a pin. The above structural design can stably fix the entire tracked vehicle 1 and ensure that the tracked vehicle 1 will not skew and shake during operation.

[0036] The suspension mechanism 5 includes a receiving suspension frame 501, a connecting right-angle frame 502, a first hydraulic rod 503, and a second hydraulic rod 504. One end of the receiving suspension frame 501 is installed with the connecting right-angle frame 502 through a pin. Moreover, the first hydraulic rod 503 and the second hydraulic rod 504 are installed inside the middle part of the receiving suspension frame 501 through pins. At the same time, the other end of the receiving suspension frame 501 is installed on the first mounting seat 601 through a pin. The top end of the first hydraulic rod 503 is installed on the front cross beam of the tracked vehicle 1 through a pin. The second hydraulic rod 504 is installed on the second mounting seat 602 through the end pin. The above structural design not only provides a stable installation foundation for the tree-digging bracket 6, but also can control the stable displacement of the tree-digging bracket 6, facilitating the tree-digging bracket 6 to fit with the soil at the bottom of the tree.

[0037] The receiving suspension frame 501 forms a rotating mechanism with the connecting right-angle frame 502 and the first mounting seat 601 through pins at both ends. Moreover, the receiving suspension frame 501 forms a rotating mechanism with the first hydraulic rod 503 and the second hydraulic rod 504 through two groups of parallel pins distributed inside the middle part. And the first hydraulic rod 503 forms a rotating mechanism with the front beam of the tracked vehicle 1 through the end pin. At the same time, the second hydraulic rod 504 forms a rotating mechanism with the second mounting seat 602 through the end pin. The above structural design enables the tree-digging bracket 6 to perform stable rotational position adjustment and ensures the stability of the tree-digging bracket 6 when it is stationary.

[0038] The top view shape of the tree-digging bracket 6 is a "匚" shape. Moreover, a positioning plug board 7 is vertically installed at the end of the tree-digging bracket 6. And the positioning plug board 7 is an arc-shaped thick board with a sharp bottom end. The above structural design enables the tree-digging bracket 6 to surround and be erected at the root of the tree, and the positioning plug board 7 is inserted into the soil to ensure the stability of the tree-digging bracket 6 during operation.

[0039] The centers of the external gear 12, the internal gear 13, the connecting sleeve 14, the positioning seat 15, the internal drive rod 16, and the drive gear 17 are on the same horizontal straight line. Moreover, the external gear 12, the internal gear 13, the connecting sleeve 14, the positioning seat 15, the internal drive rod 16, and the drive gear 17 are symmetrically distributed at the end of the tree-digging bracket 6. The above structural design ensures that the power can be stably transmitted to the chain mechanism 18 and the guiding mechanism 19.

[0040] The chain mechanism 18 includes a digging chain 1801 and a chain particle 1802, and the chain particle 1802 is installed on the digging chain 1801, and the inner sides of both ends of the digging chain 1801 are meshed and connected with the driving gear 17. The length of the chain mechanism 18 is longer than the length of the guide mechanism 19. The above structural design enables the driving gear 17 to stably drive the digging chain 1801 to move with the chain particle 1802, ensuring that the chain particle 1802 can achieve normal cutting of the soil and root system.

[0041] The guide mechanism 19 includes a guide plate 1901 and a guide rail 1902, and the guide rail 1902 is fixed to the top and bottom surfaces of the guide plate 1901, and the guide rail 1902 is connected to the digging chain 1801. The guide plate 1901 and the guide rail 1902 are both arranged in an arc shape, and positioning plates 20 are fixed to both ends of the guide plate 1901 by bolts. The above-mentioned structural design allows the digging chain 1801 and the chain particles 1802 to only move along the guide rail 1902 in an arc trajectory, cutting an arc-shaped incision on the soil, and cooperating with the rotation of the guide plate 1901 to cut a hemispherical soil ball at the root of the tree.

[0042] Working principle: When using this device, first control the crawler 1 to move near the tree to be excavated, and then control Figure 1 , Figure 2 and Figure 3 The rear hydraulic support column 2 in the middle is lowered vertically, so that the bottom support disc of the rear hydraulic support column 2 is closely attached to the soil surface, and then the side hydraulic support arms 4 on both sides of the front end of the crawler vehicle 1 are rotated and lowered, and the side hydraulic support arms 4 are controlled to extend, so that the serrated gripping plates at the ends of the side hydraulic support arms 4 are inserted into the soil, and then the first hydraulic rod 503 and the second hydraulic rod 504 are controlled to move the tree digging support 6 close to the tree to be dug, so that the tree is located at the inner center of the tree digging support 6, and then the first hydraulic rod 503 and the second hydraulic rod 504 are controlled again to drive the tree digging support 6 to move vertically downward, so that the positioning plug plate 7 at the end of the tree digging support 6 is vertically inserted into the soil and fixed, completing the preparation work before digging;

[0043] Then control Figure 5 and Figure 7 The first motor 8 in the output shaft drives the outer chain 10 to operate through the sprocket at the end of the output shaft, and the outer chain 10 drives Figure 8 and Fig. 9 The outer gear 12 in the tree digging support 6 rotates, and the outer gear 12 drives the inner driving rod 16 to rotate independently of the connecting sleeve 14. This is because a bearing is installed between the inner side of the connecting sleeve 14 and the inner driving rod 16. Therefore, the driving gear 17 at the end of the inner driving rod 16 symmetrically distributed at the end of the tree digging support 6 drives the inner driving rod 16 to rotate independently. Fig.11The digging chain 1801 carries the chain particles 1802 and moves in an arc track along the guide rails 1902 fixed on the top and bottom surfaces of the guide plate 1901, which is manifested as a stable rotation movement around the outer side of the guide plate 1901. The digging chain 1801 and the chain particles 1802 begin to cut the soil surface in contact during the movement, and cut arc-shaped grooves on the soil surface.

[0044] Control at this time Figure 5 and Figure 7 The second motor 9 in the output shaft drives the inner chain 11 to operate through the sprocket at the end of the output shaft, and the inner chain 11 drives Figure 8 and Fig. 9 The inner gear 13 in the hole rotates, and the inner gear 13 drives the connecting sleeve 14 fixed thereto to rotate. The connecting sleeve 14 drives the guide mechanism 19 and the chain mechanism 18 through the positioning plate 20 installed at the end to rotate downward with the center of the inner driving rod 16 as the axis and enter the soil. The chain mechanism 18 continues to work after entering the soil, and the continuously moving digging chain 1801 continues to cut the root system and the soil near the root system with the chain particles 1802 until the chain mechanism 18 and the guide mechanism 19 rotate 180°. The chain mechanism 18 and the guide mechanism 19 are symmetrical to the initial cutting and digging position, and the soil is exposed again, completing the digging. The cutting and excavation of the root system and the soil, the soil connected to the tree root system is cut and excavated into a regular hemispherical shape, and then the tree can be lifted away by using the boom 3. The locking mechanism 21 can squeeze the positioning plate 20 by squeezing the spring telescopic rod, so that the inclination angle of the chain mechanism 18 and the guide mechanism 19 can be fixed when necessary, so that the chain mechanism 18 can continuously and stably cut the thicker root system. The corrugated flushing pipe 22 is supplied with water through the water supply pipe discharged from the tree digging bracket 6, and can spray water to wash the soil or impurities on the chain mechanism 18 and the guide mechanism 19, and can also be used to soften the soil by flushing to facilitate excavation.

[0045] The above is only an embodiment of the present invention, and the common sense such as the known specific structure and characteristics in the scheme is not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A self-propelled tree digging machine, comprising a crawler vehicle (1), characterized in that: The back of the crawler vehicle (1) is provided with a rear hydraulic support column (2), and a suspension arm (3) is fixedly installed at the center of the front end of the crawler vehicle (1), and side hydraulic support arms (4) are installed on both sides of the front end of the crawler vehicle (1), the bottom of the front end of the crawler vehicle (1) is connected to one end of a suspension mechanism (5), and the other end of the suspension mechanism (5) is connected to the front end cross beam of the crawler vehicle (1), the first mounting seat (601) and the second mounting seat (602), and the first mounting seat (601) and the second mounting seat (602) are welded and fixed on the tree digging bracket. (6) at the center of the outer side surface, a positioning plug plate (7) is installed at the end of the tree digging support (6), and a first motor (8) and a second motor (9) are fixedly installed in the middle of the inner side of the tree digging support (6), and an outer chain (10) is installed on the sprockets at both ends of the output shaft of the first motor (8), and an inner chain (11) is installed on the sprockets at both ends of the output shaft of the second motor (9), and the other end of the outer chain (10) is installed on the outer gear (12), and the other end of the inner chain (11) is installed on the inner gear (13), and the inner gear (1 3) is fixedly mounted on one end of the outer side of the connecting sleeve (14), and the outer side of the connecting sleeve (14) is connected to the inner wall of the positioning seat (15) through a bearing, and the positioning seat (15) is fixed to the inner wall of the end of the tree digging support (6), and an inner driving rod (16) is installed at the center of the inner side of the connecting sleeve (14) through a bearing seat, and one end of the inner driving rod (16) is welded and fixed to the center of the outer gear (12), and a driving gear (17) is fixedly mounted on the other end of the inner driving rod (16), and the driving gear (17) is connected to the chain mechanism (1 8) are connected at both ends, and the middle part of the chain mechanism (18) is installed on the guide mechanism (19), and a positioning plate (20) is fixed to the end of the guide mechanism (19) by bolts, and the other end of the positioning plate (20) is connected and fixed to the end of the connecting sleeve (14) by bolts, and a locking mechanism (21) is arranged on the top of the positioning plate (20), a corrugated flushing pipe (22) is installed on one side of the interior of the tree digging support (6), and a lubricating oil nozzle (23) for lubricating the chain mechanism (18) is installed on the other side of the tree digging support (6); The suspension mechanism (5) comprises a receiving suspension frame (501), a connecting right-angle frame (502), a first hydraulic rod (503) and a second hydraulic rod (504), and one end of the receiving suspension frame (501) is installed with the connecting right-angle frame (502) via an axle pin, and the first hydraulic rod (503) and the second hydraulic rod (504) are installed on the inner side of the middle part of the receiving suspension frame (501) via an axle pin, and the other end of the receiving suspension frame (501) is installed on the first mounting seat (601) via an axle pin, the top end of the first hydraulic rod (503) is installed on the front end cross beam of the crawler vehicle (1) via an axle pin, and the second hydraulic rod (504) is installed on the second mounting seat (602) via an end axle pin; The receiving and hanging bracket (501) forms a rotating mechanism with the connecting right-angle bracket (502) and the first mounting seat (601) respectively through the shaft pins at both ends, and the receiving and hanging bracket (501) forms a rotating mechanism with the first hydraulic rod (503) and the second hydraulic rod (504) respectively through two groups of shaft pins distributed in parallel on the inner side of the middle part. Moreover, the first hydraulic rod (503) forms a rotating mechanism with the front beam of the crawler vehicle (1) through the shaft pin at the end, and at the same time, the second hydraulic rod (504) forms a rotating mechanism with the second mounting seat (602) through the shaft pin at the end; The top view shape of the tree-digging bracket (6) is a "C" shape, and a positioning plug board (7) is vertically installed at the end of the tree-digging bracket (6), and the positioning plug board (7) is an arc-shaped thick board with a sharp bottom end; The chain mechanism (18) includes a digging pit chain (1801) and chain grains (1802), and the chain grains (1802) are installed on the digging pit chain (1801). Moreover, the inner sides of both ends of the digging pit chain (1801) are meshed and connected with the driving gear (17), and the length of the chain mechanism (18) is longer than that of the guiding mechanism (19); The guiding mechanism (19) includes a guiding plate (1901) and guiding tracks (1902), and guiding tracks (1902) are fixed on both the top surface and the bottom surface of the guiding plate (1901). Moreover, the guiding tracks (1902) are connected with the digging pit chain (1801). The guiding plate (1901) and the guiding tracks (1902) are both set to be arc-shaped, and positioning plates (20) are fixed at both ends of the guiding plate (1901) through bolts.

2. A self-propelled tree digging machine according to claim 1, characterized in that: The rear hydraulic support column (2) and the side hydraulic support arm (4) are symmetrically distributed with respect to the crawler vehicle (1), and a serrated grab floor is installed at the end of the side hydraulic support arm (4) through a shaft pin.

3. A self-propelled tree digging machine according to claim 1, characterized in that: The centers of the external gear (12), the internal gear (13), the connecting sleeve (14), the positioning seat (15), the internal driving rod (16) and the driving gear (17) are on the same horizontal straight line, and the external gear (12), the internal gear (13), the connecting sleeve (14), the positioning seat (15), the internal driving rod (16) and the driving gear (17) are symmetrically distributed at the end of the tree-digging bracket (6).

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