CN212393452U - Automatic pruning and cutting device for lumbering - Google Patents

Abstract

The utility model belongs to the field of felling devices, and particularly discloses an automatic trimming and cutting device for felling, which comprises a felling and cutting clamping mechanism and a trimming and cutting mechanism, wherein the felling and cutting clamping mechanism comprises a hanger, main brackets and a supporting bottom plate, an upper base plate and a lower base plate are arranged between the two main brackets, two sides of a clamping groove of the upper base plate and the lower base plate are respectively provided with a clamping arm with an arc structure, a knife rest is arranged on the supporting bottom plate, the outer ends of side plates of the two knife rests are provided with rotary felling knives, and the outer ends of the supporting bottom plate are symmetrically provided with auxiliary trimming; the pruning and material cutting mechanism comprises a base and a vertical support, wherein two guide rails are arranged on the inner side surface of the vertical support in parallel, and a fixed clamping hand and a manual clamping hand are respectively arranged on the two guide rails. The utility model discloses whole degree of automation is high, can accomplish the work of felling, pruning and cutting link of trunk safely high-efficiently, and work efficiency is high, with low costs, and easy and present multiple establish the matching interface, and the flexibility is strong, is fit for using widely.

Description

Automatic pruning and cutting device for lumbering

Technical Field

The utility model relates to a lumbering device field specifically is an automatic trimming cutting device of lumbering.

Background

At present, comparatively straight economic forests such as eucalyptus and fir are widely planted in the provinces such as Guangdong, Guangxi, Hainan and the like of artificial forests in southern areas of China, but the mechanized degree of felling of the forests in China is lower. Although various fellers are disclosed, the actual cost is high, the actual using effect is poor in mountain working condition environment, the felling machine cannot be popularized in a large range, and the felling is mainly carried out by adopting a chain saw and a cutter axe for assistance. The mode not only has heavy physical labor, but also has low efficiency and high cost, and especially has potential safety production hazards.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic pruning cutting device of lumbering to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an automatic pruning and cutting device for felling trees comprises a pruning and clamping mechanism and a pruning and cutting mechanism, wherein the pruning and clamping mechanism comprises a hanging bracket, a main support and a support bottom plate, the hanging bracket is of a U-shaped structure with a downward opening, and a transfer plate is rotatably arranged at the center of the top of the hanging bracket; the two main supports are arranged in parallel and vertically, an upper base plate and a lower base plate are arranged between the two main supports in parallel from top to bottom, the upper base plate, the lower base plate and the support base plate are parallel to each other, the front surfaces of the upper base plate, the lower base plate and the support base plate are respectively provided with a clamping groove of a semicircular structure which is opposite to the upper side and the lower side and used for placing a trunk, the upper ends of the two main supports are rotatably connected with the two;

two sides of the clamping groove of the upper substrate and the lower substrate are respectively provided with a clamping arm with an arc structure, the upper clamping arm and the lower clamping arm are connected through a pin shaft, and the upper end and the lower end of the pin shaft are respectively connected with the upper substrate and the lower substrate in a rotating way; the positions of the lower substrate corresponding to the two pin shafts are respectively provided with a clamping oil cylinder, the end parts of the two clamping arms are respectively provided with a driving shaft for driving the clamping arms to open and close, and the driving shaft is inserted into a shaft hole formed in the output end of the clamping oil cylinder;

the support bottom plate is provided with a knife rest which is in a U-shaped structure, the opening direction of the knife rest is consistent with that of the clamping groove, two sides of the knife rest are knife rest side plates, a rotary felling knife is arranged between the outer ends of the two knife rest side plates through a bearing, one end of the rotary felling knife extends out of the knife rest side plates and is provided with a driven wheel, the back of the knife rest is provided with a motor, the output end of the motor is provided with a driving wheel which is parallel to the driven wheel, and the driving wheel is; auxiliary pruning knives of arc structures are symmetrically arranged on two sides of the outer end of the supporting base plate and rotatably connected with the supporting base plate, the auxiliary pruning knives are connected with the clamping arms above the auxiliary pruning knives through force guide handles, and the upper ends and the lower ends of the force guide handles are respectively and rotatably connected with the end parts of the clamping arms and the auxiliary pruning knives;

the pruning and material cutting mechanism comprises a base and a vertical support vertically arranged on one side of the base, two guide rails are arranged on the inner side surface of the vertical support in an up-down parallel mode, a fixed clamping hand and a manual clamping hand are respectively arranged on the two guide rails, and a rack is arranged below the two guide rails in a parallel mode; a scale is vertically arranged at one end of the lower guide rail, which is far away from the fixed clamping hand, and a material length sensor is arranged on the scale; one end of the vertical support close to the fixed clamping hand is rotatably provided with an inclined waste branch cleaning arm which is driven to turn over by a cleaning oil cylinder; and a mounting bracket is arranged on one side of the outer side of the base, which is close to the fixed clamping hand, a chain saw is arranged on the mounting bracket, a turnover motor is arranged on the mounting bracket, and the output end of the turnover motor is connected with the chain saw, so that the turnover cutting of the chain saw is realized.

Preferably, the end parts of the two sides of the supporting bottom plate are symmetrically provided with connecting rods extending outwards, the two side walls of the hanging bracket are symmetrically provided with balancing oil cylinders, the main body of each balancing oil cylinder is rotatably connected with the side wall of the hanging bracket, and the output end of each balancing oil cylinder is downwardly rotatably connected with the corresponding connecting rod.

Preferably, the bottom of the knife rest side plate is vertically provided with guide plates extending towards two sides, two sides of the support bottom plate are vertically turned upwards to form limiting plates, sliding grooves with opposite openings are formed in opposite surfaces of the two limiting plates, and the two guide plates are embedded into the corresponding sliding grooves to slide; and the side plate of the tool rest far away from one side of the transmission belt is vertically provided with an ejector block, the supporting bottom plate is correspondingly provided with a feeding oil cylinder, and the output end of the feeding oil cylinder is connected with the ejector block.

Preferably, the surface of the rotary felling knife is provided with a cutting edge with a spiral structure, chip removal grooves are formed between the cutting edges of adjacent spiral lines at intervals, and chip separation grooves with notch structures are formed on the cutting edges at equal intervals.

Preferably, the fixed clamping hand and the manual clamping hand both comprise a supporting plate, a fixed arm, a movable clamping arm and a clamping oil cylinder, the fixed arm is vertically arranged at the bottom of the supporting plate, the movable clamping arm is arranged above the fixed arm in parallel and is rotationally connected with the supporting plate, the clamping oil cylinder is rotationally arranged at the upper part of the supporting plate, the output end of the clamping oil cylinder is rotationally connected with the movable clamping arm, and the opposite surfaces of the fixed arm and the movable clamping arm are recessed to form a clamping groove for clamping a trunk; the fixed clamping hand is fixed at the end parts of the two guide rails through a supporting plate, and a main pruning knife is arranged in a clamping groove of the fixed clamping hand; the supporting plate of the manual clamping hand is sleeved on the two guide rails to slide, the bottom of the fixed arm of the manual clamping hand is provided with a speed reducing motor, and the output end of the speed reducing motor is provided with a gear meshed with the rack.

Preferably, a material diameter sensor is installed on the inner wall of a clamping groove of the movable clamping arm of the fixed clamping hand, and a starting sensor is installed on the inner wall of a clamping groove of the fixed arm.

Preferably, the outer side surface of the base is provided with a material guide plate for guiding the cut trees out, and the material guide plate is arranged in an outward inclined manner.

Preferably, the scale is sleeved on the guide rail in a sliding manner and used for adjusting the length of the cut material.

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

the utility model discloses wholly utilize to cut off fixture and prune the cooperation of cutting the timber mechanism and carry out the operation of lumbering, degree of automation is high, can accomplish the work of cutting down, pruning and the cutting link of trunk safely high-efficiently, and work efficiency is high, with low costs, and easy and present multiple establish the matching interface, and the flexibility is strong, is fit for using widely.

Drawings

FIG. 1 is a schematic view of the overall structure of the cutting and clamping mechanism of the present invention;

fig. 2 is a schematic view of a specific connection structure of the upper substrate and the lower substrate of the present invention;

FIG. 3 is a schematic view of the installation structure of the rotary felling knife on the knife rest;

fig. 4 is a schematic structural diagram of the rotary felling knife of the present invention;

fig. 5 is a schematic structural view of an end face of the rotary felling knife of the present invention;

FIG. 6 is a schematic view of the whole structure of the pruning and material cutting mechanism of the present invention;

fig. 7 is a schematic view of a specific structure of the fixed clamping hand of the present invention;

fig. 8 is a schematic view of a specific structure of the hand grip of the present invention.

In the figure: 1. a hanger; 2. an adapter plate; 3. a main support; 4. an upper substrate; 5. a lower substrate; 6. a support base plate; 7. a clamping groove; 8. a connecting rod; 9. a balancing oil cylinder; 10. a clamp arm; 11. a pin shaft; 12. clamping the oil cylinder; 13. a drive shaft; 14. a tool holder; 15. a knife rest side plate; 16. rotating a felling knife; 1601. a cutting edge; 1602. a chip groove; 1603. a chip dividing groove; 17. a driven wheel; 18. a motor; 19. a driving wheel; 20. a transmission belt; 21. a guide plate; 22. a limiting plate; 23. a chute; 24. a top block; 25. a feed cylinder; 26. an auxiliary pruning knife; 27. a force guide handle; 28. a base; 29. erecting a support; 30. a guide rail; 31. fixing a clamping hand; 32. a manual clamping hand; 33. a support plate; 34. a fixed arm; 35. moving the clamping arm; 36. clamping the oil cylinder; 37. a clamping groove; 38. a main pruning knife; 39. a reduction motor; 40. a gear; 41. a rack; 42. a scale; 43. a length sensor; 44. a waste branch cleaning arm; 45. cleaning the oil cylinder; 46. mounting a bracket; 47. a chain saw; 48. a material guide plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1: referring to fig. 1-8, the present invention provides a technical solution: an automatic pruning and cutting device for felling comprises a pruning and clamping mechanism and a pruning and cutting mechanism, wherein the pruning and clamping mechanism comprises a hanging bracket 1, a main support 3 and a support bottom plate 6, the hanging bracket 1 is of a U-shaped structure with a downward opening, and a transfer plate 2 is rotatably arranged at the center of the top of the hanging bracket 1; the two main supports 3 are arranged in parallel and vertically, an upper substrate 4 and a lower substrate 5 are arranged between the two main supports 3 in parallel from top to bottom, the upper substrate 4, the lower substrate 5 and the support bottom plate 6 are parallel to each other, the front surfaces of the three are respectively provided with a clamping groove 7 of a semicircular structure which is opposite from top to bottom and used for placing a trunk, the upper ends of the two main supports 3 are rotatably connected with the two side walls of the hanging bracket 1, and the lower ends of the two main supports 3 are vertically and fixedly;

two sides of the clamping groove 7 of the upper substrate 4 and the lower substrate 5 are respectively provided with a clamping arm 10 with an arc structure, the upper clamping arm 10 and the lower clamping arm 10 are connected through a pin shaft 11, and the upper end and the lower end of the pin shaft 11 are respectively rotatably connected with the upper substrate 4 and the lower substrate 5; a clamping oil cylinder 12 is respectively arranged on the lower substrate 5 at the positions corresponding to the two pin shafts 11, a driving shaft 13 for driving the clamping oil cylinder to open and close is respectively arranged at the end parts of the two clamping arms 10, and the driving shaft 13 is inserted into a shaft hole formed in the output end of the clamping oil cylinder 12;

the support bottom plate 6 is provided with a knife rest 14 which is in a U-shaped structure, the opening direction of the knife rest 14 is consistent with that of the clamping groove 7, two knife rest side plates 15 are arranged on two sides of the support bottom plate, a rotary felling knife 16 is arranged between the outer ends of the two knife rest side plates 15 through a bearing, one end of the rotary felling knife 16 extends out of the knife rest side plates 15 and is provided with a driven wheel 17, the back of the knife rest 14 is provided with a motor 18, the output end of the motor 18 is provided with a driving wheel 19 which is parallel to the driven wheel 17, and the; auxiliary pruning knives 26 of an arc structure are symmetrically arranged on two sides of the outer end of the supporting base plate 6 and are rotatably connected with the supporting base plate, the auxiliary pruning knives 26 are connected with the clamping arm 10 above the auxiliary pruning knives through force guide handles 27, and the upper ends and the lower ends of the force guide handles 27 are respectively rotatably connected with the end parts of the clamping arm 10 and the auxiliary pruning knives 26;

the pruning and material cutting mechanism comprises a base 28 and a vertical support 29 vertically arranged on one side of the base 28, two guide rails 30 are arranged on the inner side surface of the vertical support 29 in an up-down parallel manner, a fixed clamping hand 31 and a manual clamping hand 32 are respectively arranged on the two guide rails 30, and a rack 41 is arranged below the two guide rails 30 in a parallel manner; a scale 42 is vertically arranged at one end of the lower guide rail 30 far away from the fixed clamping hand 31, and a material length sensor 43 is arranged on the scale 42; one end of the vertical bracket 29 close to the fixed clamping hand 31 is rotatably provided with an inclined waste branch cleaning arm 44 which is driven to turn over by a cleaning oil cylinder 45; and a mounting bracket 46 is arranged on one side of the outer side of the base 28 close to the fixed clamping hand 31, a chain saw 47 is arranged on the mounting bracket 46, a turnover motor is arranged on the mounting bracket 46, and the output end of the turnover motor is connected with the chain saw 47 to realize turnover cutting of the chain saw 47.

Furthermore, the end parts of the two sides of the supporting bottom plate 6 are symmetrically provided with connecting rods 8 extending outwards, the two side walls of the hanger 1 are symmetrically provided with balancing cylinders 9, the main body of each balancing cylinder 9 is rotatably connected with the side wall of the hanger 1, and the output end of each balancing cylinder is downwardly rotatably connected with the corresponding connecting rod 8.

Further, guide plates 21 extending towards two sides are vertically installed at the bottom of the knife rest side plate 15, two sides of the support bottom plate 6 are vertically turned upwards to form limiting plates 22, sliding grooves 23 with opposite openings are formed in opposite surfaces of the two limiting plates 22, and the two guide plates 21 are embedded into the corresponding sliding grooves 23 to slide; the side plate 15 of the tool rest far away from one side of the transmission belt 20 is vertically provided with an ejector block 24, the supporting bottom plate 6 is correspondingly provided with a feeding oil cylinder 25, and the output end of the feeding oil cylinder 25 is connected with the ejector block 24.

Further, the surface of the rotary felling knife 16 is provided with a cutting edge 1601 with a spiral structure, a chip discharge groove 1602 is formed between the cutting edges 1601 with adjacent spiral lines at intervals, and chip separation grooves 1603 with notch structures are formed on the cutting edges 1601 at equal intervals.

Furthermore, the fixed clamping hand 31 and the movable clamping hand 32 both comprise a supporting plate 33, a fixed arm 34, a movable clamping arm 35 and a clamping oil cylinder 36, the fixed arm 34 is vertically arranged at the bottom of the supporting plate 33, the movable clamping arm 35 is arranged above the fixed arm 34 in parallel and is rotatably connected with the supporting plate 33, the clamping oil cylinder 36 is rotatably arranged at the upper part of the supporting plate 33, the output end of the clamping oil cylinder is rotatably connected with the movable clamping arm 35, and the opposite surfaces of the fixed arm 34 and the movable clamping arm 35 are recessed to form a clamping groove 37 for clamping the trunk; the fixed clamping hand 31 is fixed at the end parts of the two guide rails 30 through a supporting plate 33, and a main pruning knife 38 is arranged in a clamping groove 37 of the fixed clamping hand; the hole of the supporting plate 33 of the manual clamping hand 32 is sleeved on the two guide rails 30 to slide, the bottom of the fixing arm 34 is provided with a speed reducing motor 39, and the output end of the speed reducing motor 39 is provided with a gear 40 meshed with a rack 41.

Furthermore, a material diameter sensor is installed on the inner wall of the clamp groove 37 of the movable clamp arm 35 of the fixed clamp hand 31, and a starting sensor is installed on the inner wall of the clamp groove 37 of the fixed arm 34.

Further, a material guide plate 48 for guiding the cut trees out is arranged on the outer side surface of the base 28, and the material guide plate 48 is arranged in an outward inclined manner.

Further, the scale 42 is slidably sleeved on the guide rail 30 and used for adjusting the length of the cut material.

And each electrical device of the cutting and clamping mechanism and the pruning and material cutting mechanism is supplied with power by an external power supply and is respectively controlled by a PLC control panel.

Example 2: the cutting and clamping mechanism can carry out valve wood operation on a special machine which is provided with wheels capable of moving and a moving rotating arm; the felling machine can also be additionally arranged on machine heads of a wood grabbing machine, a digging machine and the like with a moving rotating arm to expand the felling operation function.

Example 3: the pruning and cutting mechanism can be provided with wheels on the base 28 for independent movement operation, and can also be provided on a boxcar.

The working principle is as follows: when the device works, the cutting and clamping mechanism is integrally arranged on corresponding equipment through the adapter plate 2 at the top of the hanger 1, the adapter plate 2 is rotatably connected with the hanger 1 through the adapter shaft and rotates mutually in the axial direction, and the adapter plate 2 is fixed at the tail end of a rotating arm of a machine which can move and is provided with a moving rotating arm.

The moving rotary arm lifts the whole cutting and clamping mechanism and is arranged on one side of a tree to be cut, the clamping oil cylinder 12 is started to drive the clamping arms 10 on the upper substrate 4 and the lower substrate 5 to be clasped, so that the tree trunk is lightly clamped, meanwhile, the auxiliary pruning knife 26 clasps with the clasping of the clamping arms 10 to clamp the tree trunk, and under the action of gravity, the whole cutting and clamping mechanism moves downwards along the tree trunk (the moving rotary arm cooperates to act), so that the auxiliary pruning knife 26 primarily prunes the lower side of the tree trunk; when the tree is pruned to be close to the root, the clamping oil cylinder 12 drives the clamping arm 10 to clamp the tree trunk, the motor 18 drives the rotary felling knife 16 to rotate at a high speed through the transmission belt 20, and meanwhile, the feeding oil cylinder 25 is started to push the knife rest 14 to move integrally, so that the rotary felling knife 16 is driven to feed the tree trunk, and the tree trunk is cut and felled.

After the tree is cut off, the tree is laid down, the trunk is continuously clamped by the cutting and clamping mechanism, the trunk with the extending section is clamped and sent to the pruning and cutting device along with the moving rotating arm, the trunk is lightly clamped by a fixed clamping hand 31 of the pruning and cutting device, the trunk is tightly clamped by a manual clamping hand 32, the manual clamping hand 32 is driven by a speed reducing motor 39, a gear 40 at the output end of the manual clamping hand is meshed with a rack 41 for transmission, and the linear feeding motion is carried out along a guide rail 30, so that the trunk is driven to be conveyed forwards; the main pruning knife 38 on the fixed clamping hand 31 prunes branches simultaneously in the process of forward conveying of the trunk, the movable clamping hand 32 and the trunk stop moving when moving to the position of the material length sensor 43 on the scale 42, the chain saw 47 turns over and feeds to cut the trunk (the position of the scale 42 can be moved to adjust the length of cut material), the movable clamping hand 32 releases the cut trunk, the trunk naturally rolls down the cut material through the material guide plate 48, and the movable clamping hand 32 returns to perform the next section of pruning and cutting operation; when the material diameter sensor at the fixed clamping hand 31 identifies that the branches at the tail part of the tree are too small, the clamping oil cylinder 36 is started to drive the movable clamping arm 35 to be opened, the cleaning oil cylinder 45 is started to drive the waste branch cleaning arm 44 to swing, and the waste branches are cleaned.

It is worth noting that: the whole device realizes control over the device through the master control button, and the device matched with the control button is common equipment, belongs to the existing mature technology, and is not repeated for the electrical connection relation and the specific circuit structure.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. An automatic pruning and cutting device for felling trees comprises a pruning and clamping mechanism and a pruning and cutting mechanism, and is characterized in that the pruning and clamping mechanism comprises a hanging bracket (1), a main support (3) and a support bottom plate (6), the hanging bracket (1) is of a U-shaped structure with a downward opening, and a transfer plate (2) is rotatably arranged at the center of the top of the hanging bracket (1); the two main supports (3) are arranged in parallel and vertically, an upper substrate (4) and a lower substrate (5) are arranged between the two main supports (3) in an up-down parallel mode, the upper substrate (4), the lower substrate (5) and a supporting bottom plate (6) are parallel to each other, the front faces of the upper substrate (4), the front faces of the lower substrate (5) and the front faces of the supporting bottom plate (6) are respectively provided with a clamping groove (7) of a vertically opposite semicircular structure for placing a trunk, the upper ends of the two main supports (3) are rotatably connected with the two side walls;

two sides of a clamping groove (7) of the upper substrate (4) and the lower substrate (5) are respectively provided with a clamping arm (10) with an arc structure, the upper clamping arm and the lower clamping arm (10) are connected through a pin shaft (11), and the upper end and the lower end of the pin shaft (11) are respectively rotatably connected with the upper substrate (4) and the lower substrate (5); the positions, corresponding to the two pin shafts (11), of the lower base plate (5) are respectively provided with a clamping oil cylinder (12), the end parts of the two clamping arms (10) are respectively provided with a driving shaft (13) for driving the clamping arms to open and close, and the driving shaft (13) is inserted into a shaft hole formed in the output end of the clamping oil cylinder (12);

the wood cutting machine is characterized in that a tool rest (14) is mounted on the supporting base plate (6), the tool rest (14) is of a U-shaped structure, the opening direction of the tool rest is consistent with that of the clamping groove (7), tool rest side plates (15) are arranged on two sides of the tool rest side plates, a rotary felling knife (16) is mounted between the outer ends of the two tool rest side plates (15) through a bearing, one end of the rotary felling knife (16) extends out of the tool rest side plates (15) and is provided with a driven wheel (17), a motor (18) is mounted on the back of the tool rest (14), a driving wheel (19) which is parallel to the driven wheel (17) is mounted at the output end; auxiliary pruning knives (26) of an arc structure are symmetrically arranged on two sides of the outer end of the supporting base plate (6) and rotatably connected with the supporting base plate, the auxiliary pruning knives (26) are connected with the clamping arm (10) above the auxiliary pruning knives through force guide handles (27), and the upper ends and the lower ends of the force guide handles (27) are respectively rotatably connected with the end parts of the clamping arm (10) and the auxiliary pruning knives (26);

the pruning and material cutting mechanism comprises a base (28) and a vertical support (29) vertically arranged on one side of the base (28), two guide rails (30) are arranged on the inner side surface of the vertical support (29) in an up-down parallel mode, a fixed clamping hand (31) and a manual clamping hand (32) are respectively arranged on the two guide rails (30), and a rack (41) is arranged below the two guide rails (30) in a parallel mode; a scale (42) is vertically arranged at one end of the lower guide rail (30) far away from the fixed clamping hand (31), and a material length sensor (43) is arranged on the scale (42); one end of the vertical bracket (29) close to the fixed clamping hand (31) is rotatably provided with an inclined waste branch cleaning arm (44) which is driven to turn over by a cleaning oil cylinder (45); and a mounting bracket (46) is arranged on one side of the outer side of the base (28) close to the fixed clamping hand (31), a chain saw (47) is arranged on the mounting bracket, a turnover motor is mounted on the mounting bracket (46), and the output end of the turnover motor is connected with the chain saw (47) to realize turnover cutting of the chain saw (47).

2. The automatic pruning and material cutting device for lumbering according to claim 1, characterized in that: the support base plate (6) both sides tip symmetry is provided with outside extension connecting rod (8), and balanced hydro-cylinder (9) are installed to the symmetry on gallows (1) both sides wall, and balanced hydro-cylinder (9) main part rotates with gallows (1) lateral wall to be connected, and its output is connected with corresponding connecting rod (8) rotation downwards.

3. The automatic pruning and material cutting device for lumbering according to claim 1, characterized in that: guide plates (21) extending towards two sides are vertically arranged at the bottom of the knife rest side plate (15), two sides of the supporting bottom plate (6) are upwards and vertically turned to form limiting plates (22), sliding grooves (23) with opposite openings are formed in opposite surfaces of the two limiting plates (22), and the two guide plates (21) are embedded into the corresponding sliding grooves (23) to slide; an ejector block (24) is vertically arranged on the side plate (15) of the tool rest far away from one side of the transmission belt (20), a feeding oil cylinder (25) is correspondingly arranged on the supporting bottom plate (6), and the output end of the feeding oil cylinder (25) is connected with the ejector block (24).

4. The automatic pruning and material cutting device for lumbering according to claim 1, characterized in that: rotatory felling knife (16) surface is provided with helical structure's cutting edge (1601), and the interval forms chip groove (1602) between adjacent helical line's cutting edge (1601), and equidistant chip separating groove (1603) that are equipped with the opening structure on cutting edge (1601).

5. The automatic pruning and material cutting device for lumbering according to claim 1, characterized in that: the fixed clamping hand (31) and the movable clamping hand (32) respectively comprise a supporting plate (33), a fixed arm (34), a movable clamping arm (35) and a clamping oil cylinder (36), the fixed arm (34) is vertically arranged at the bottom of the supporting plate (33), the movable clamping arm (35) is arranged above the fixed arm (34) in parallel and is rotatably connected with the supporting plate (33), the clamping oil cylinder (36) is rotatably arranged at the upper part of the supporting plate (33), the output end of the clamping oil cylinder is rotatably connected with the movable clamping arm (35), and opposite surfaces of the fixed arm (34) and the movable clamping arm (35) are inwards concave to form a clamping groove (37) for clamping a trunk; the fixed clamping hand (31) is fixed at the end parts of the two guide rails (30) through a supporting plate (33), and a main pruning knife (38) is arranged in a clamping groove (37) of the fixed clamping hand; the hole of the supporting plate (33) of the manual clamping hand (32) is sleeved on the two guide rails (30) to slide, the bottom of the fixing arm (34) is provided with a speed reducing motor (39), and the output end of the speed reducing motor (39) is provided with a gear (40) meshed with the rack (41).

6. The automatic pruning and material cutting device for lumbering according to claim 1, characterized in that: the inner wall of a clamping groove (37) of a movable clamping arm (35) of the fixed clamping hand (31) is provided with a material diameter sensor, and the inner wall of the clamping groove (37) of the fixed arm (34) is provided with a starting sensor.

7. The automatic pruning and material cutting device for lumbering according to claim 1, characterized in that: the outer side surface of the base (28) is provided with a material guide plate (48) used for guiding the cut trees out, and the material guide plate (48) is arranged in an outward inclined mode.

8. The automatic pruning and material cutting device for lumbering according to claim 1, characterized in that: the scale (42) is sleeved on the guide rail (30) in a sliding mode and used for adjusting the material cutting length.

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