CN221240956U - Branch saw and branch snatchs sawing mechanism - Google Patents

Abstract

The utility model relates to a branch saw and a branch grabbing and sawing mechanism, which belong to the field of branch saws, and comprise a saw blade with a rod-shaped structure, wherein the saw blade comprises a cutter shaft and cutter teeth arranged on the peripheral surface of the cutter shaft; the branch saw sliding frame is arranged at two end sides of the saw cutting knife, and two ends of the cutter shaft are rotationally connected with the branch saw sliding frame; the support frame is connected with the branch saw sliding frame in a relatively sliding manner; the sliding frame hydraulic cylinder is used for driving the supporting frame and the branch saw sliding frame to slide relatively, and the telescopic direction of the telescopic rod of the sliding frame hydraulic cylinder is vertical to the radial direction of the cutter shaft; the output end of the saw cutting knife driving motor is in transmission connection with one end of the cutter shaft and is used for driving the cutter shaft to rotate around the axis of the cutter shaft; the utility model can effectively avoid the shaking phenomenon of the rod-shaped saw cutter in the process of sawing branches at high altitude, has better sawing effect, can be suitable for sawing thicker branches, and has compact and miniaturized product structure.

Description

Branch saw and branch snatchs sawing mechanism

Technical Field

The utility model relates to the technical field of branch saws, in particular to a branch saw and a branch grabbing and sawing mechanism which are suitable for cutting high-altitude branches.

Background

In urban construction work, the national regulations on urban greening coverage rate should be not less than 35%, meanwhile, the ratio of the main road green belt area to the total road using area is not less than 20%, the secondary main road green area to the road using area is not less than 15%, and safety hazards exist when greening trees for purifying air and shielding sunlight heat, for example, the growth of branches shields street lamps, the growth of branches is too close to wires or houses and the like. In order to avoid the occurrence of the above-mentioned danger, it is necessary to trim the greening trees. In the past, the pruning work is that a pruning worker holds a simple handheld tool to stand under a tree or climb a crotch to prune, and the defects of high labor intensity, low working efficiency, high working danger and the like exist in manual pruning.

Conventional branch saws are mostly chain saw or circular saw constructions, such as the chain saw constructions disclosed in the publication CN106711847 a. However, in the working process of sawing high-altitude branches, the action direction of sawing is mostly executed from bottom to top, which is different from the conventional sawing process, so that clamping and sawing easily occur in the process of sawing high-altitude branches, and the sawing work is not smooth.

To solve the above problems, chinese patent publication No. CN113330939a discloses a high-altitude branch saw, which is configured as a hob type structure composed of a arbor and picks or scrapers/cutters provided on the outer peripheral surface of the arbor. The integral connection structure is quite similar to the chain saw structure in the prior art, namely, one end of the main body of the saw is connected with the supporting end (a crane arm or a handheld part) of the main body of the saw, and the other end is a free end and is provided with a hydraulic motor; unlike the prior art described above, the sheet-like chain saw is replaced with a bar-type structure. However, in the practical use process, the feeding action is realized by driving the cutter shaft to move forward by virtue of the movement of the crane arm, or the cutter shaft is driven to rotate around the hinging point of the cutter shaft and the crane arm by virtue of a hydraulic cylinder connected with the extension rod (at the moment, the action track of the cutter shaft is in a fan shape). However, practice shows that in any feeding mode, when sawing branches, especially high-altitude branches, serious shaking phenomenon can be generated, the stability of saw blade connection is poor, and the sawing effect is poor; in addition, the prior art clearly discloses that the obstacle clearing action in the working process is to crush branches between the cutter shaft and the fixing frame, and in practical application, smaller branches can be crushed, and when treating thicker branches, the thick branches cannot be crushed, and the branch saw in the shaking state cannot saw the thick branches through the front end face of the branch saw. Therefore, this structure is not suitable for the sawing process of the thick branches.

In addition, the prior art, such as the disc saw blade structure disclosed in the patent document with publication number CN101563990a, improves on the basis of the common disc saw blade in order to prevent clamping saw, improves the elasticity of the saw blade through the web type connecting structure, adopts the double-layer saw blade with different diameters to form a concave shape, has elasticity and anti-clamping function substantially, is suitable for cutting thicker branches with 150-200 mm, and is also provided with a clamping pliers matched with the saw blade and other structures. Similarly, the utility model patent with the bulletin number of CN204259479U discloses an integrated operation vehicle for pruning tree branches, which is used for pruning the tree branches from the tree by arranging a mechanical claw and a circular saw on a working head of a branch pruning arm, so as to prevent the tree branches from being crashed down when the tree branches are sawed. However, in order to cut larger branches, the circular saw structure needs to be of a large enough size, which results in the saw having a large overall size, the overall structure is not compact enough, and the saw is not beneficial to the overall miniaturization of the product, and the larger-size branch saw is easier to receive the interference of side branches when the high-altitude branches are trimmed for use, so that the saw is not beneficial to the shuttle running in the gap of the high-altitude branches, and the saw is further influenced to cut selected branches under the condition of complicated branches.

Disclosure of Invention

The utility model provides the branch saw and the branch grabbing and cutting mechanism aiming at the problems in the prior art, which can effectively avoid the shaking phenomenon of the rod-shaped saw cutting knife in the process of cutting branches at high altitude, has better cutting effect, can be suitable for sawing thicker branches, has wider application range, has a compact product structure, and is beneficial to the travel of the product in the branches at high altitude.

The technical scheme for solving the technical problems is as follows:

In one aspect, the present utility model provides a branch saw comprising

The saw cutter is of a rod-shaped structure and comprises a cutter shaft and cutter teeth arranged on the peripheral surface of the cutter shaft;

The branch saw sliding frame is arranged at two end sides of the saw cutting knife, and two ends of the cutter shaft are rotationally connected with the branch saw sliding frame;

the support frame is connected with the branch saw sliding frame in a relatively sliding manner;

The cylinder barrel of the sliding frame hydraulic cylinder is fixed with the branch saw sliding frame, and the telescopic rod of the sliding frame hydraulic cylinder is fixedly connected with the support frame and is used for driving the support frame and the branch saw sliding frame to slide relatively; the telescopic direction of the telescopic rod is vertical to the radial direction of the cutter shaft;

The output end of the saw cutting knife driving motor is in transmission connection with one end of the cutter shaft and is used for driving the cutter shaft to rotate around the axis of the cutter shaft.

Further, the saw cutter driving motor is arranged at the lower side of the saw cutter and keeps a preset distance with the saw cutter, and the output end of the saw cutter driving motor is in transmission connection with one end of the cutter shaft through the transmission mechanism.

Furthermore, the transmission mechanism is hidden in the branch saw sliding frame.

Further, the transmission mechanism comprises a driving wheel fixedly connected to the output end of the sawing cutter driving motor and a driven wheel fixedly connected to one end of the cutter shaft, the driving wheel and the driven wheel are connected with the branch saw sliding frame in a manner of rotating around the axis of the driving wheel and the driven wheel, and the driving wheel and the driven wheel are in transmission connection through a transmission piece.

Further, the driving wheel and the driven wheel adopt a gear structure, a belt wheel structure or a chain wheel structure, and correspondingly, the transmission part adopts a gear transmission structure, a belt transmission structure or a chain transmission structure.

Further, the other end of the cutter shaft, which is opposite to the driven wheel, is connected with the branch saw sliding frame through a bearing seat, and the bearing seat is detachably connected with the branch saw sliding frame.

Further, the cylinder barrel of the sliding frame hydraulic cylinder is arranged beside the branch saw sliding frame in parallel. Preferably, the cylinder barrel of the sliding frame hydraulic cylinder and the branch saw sliding frame are arranged into an integrated structure.

Furthermore, a cross arm is also connected between the two branch saw sliding frames so as to ensure the synchronism of the movement of the two branch saw sliding frames driven by the two sliding frame hydraulic cylinders; the preset distance is reserved between the cross arm and the sawing cutter, and a space for yielding is provided for sawing branches.

Further, the support frame is fixedly connected with a guide plate, and a sliding groove for the sliding frame of the branch saw to slide is formed between the guide plate and the support frame. The guide plate is preferably L-shaped in cross section.

Or a sliding rail or a sliding groove corresponding to the supporting frame is directly arranged on the branch saw sliding frame.

Further, the cutter teeth are detachably connected to the cutter shaft.

In another aspect, the utility model provides a branch grabbing and sawing mechanism, which is characterized by comprising a grabbing mechanism and the branch saw, wherein the grabbing mechanism is arranged adjacent to the branch saw.

Further, the grabbing mechanism comprises a clamping jaw connected with the supporting frame and a clamping jaw driving device for driving the clamping jaw to conduct grabbing motion.

Further, the clamping jaw comprises a clamping jaw I and a clamping jaw II, wherein the clamping jaw I and the clamping jaw II are oppositely arranged and are respectively hinged on the support frame, and the clamping jaw drive is respectively connected with the clamping jaw I and the clamping jaw II and is used for driving the clamping jaw I and the clamping jaw II to open and close.

Furthermore, the grabbing mechanism further comprises a clamping jaw connecting arm, the middle part of the clamping jaw and the two end parts of the clamping jaw are respectively hinged with the supporting frame, the first end part of the clamping jaw and the middle part of the clamping jaw are respectively hinged with the two ends of the clamping jaw connecting arm, and the two ends of the clamping jaw driving mechanism are respectively hinged with the first end part of the clamping jaw and the supporting frame.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the connection relation between the rod-shaped saw cutting knife and the branch saw sliding frame, the support frame, the sliding frame hydraulic cylinder and the saw cutting knife driving motor is changed compared with the prior art, so that the two ends of the saw cutting knife are all connection ends but not free ends, the support frame is kept fixed during use, the branch saw sliding frame which is in sliding connection with the support frame is utilized to implement feeding action under the driving of the sliding frame hydraulic cylinder, the feeding direction is vertical to the saw cutting knife axial direction, the shaking phenomenon generated by the movement of the support arm or the fan-shaped track movement of the rod-shaped saw cutting knife in the high-altitude branch cutting process can be effectively avoided, the cutting effect on high-altitude branches is better, the good cutting effect can be still achieved during processing thick branches, and the application range is wider.

2. According to the branch saw, the whole structure is more compact, the product is more miniaturized, the interference from side branches is reduced, and the branch saw is facilitated to travel in a gap of high-altitude branches to reach a sawing target position through the arranged position relation between the rod-shaped saw cutting knife and the branch saw sliding frame, the supporting frame, the sliding frame hydraulic cylinder and the saw cutting knife driving motor.

3. According to the branch grabbing and sawing mechanism, the grabbing mechanism and the branch saw are arranged, so that the cooperation of the branch saw and the grabbing mechanism can more accurately fix branches to be sawn in addition to the gain effect brought by the branch saw, and the branches can be grabbed after being sawn so as to avoid free falling of the branches at the moment of sawing.

Drawings

FIG. 1 is a schematic perspective view of a tree branch saw according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a tree branch saw according to one embodiment of the present utility model;

FIG. 3 is another cross-sectional schematic view of a tree branch saw according to an embodiment of the present utility model;

FIG. 4 is a schematic perspective view of a branch grabbing and sawing mechanism according to an embodiment of the utility model;

FIG. 5 is a schematic view of a grabbing mechanism according to an embodiment of the present utility model;

In the figure: 1. saw blade, 11, arbor, 110, bearing housing, 12, cutter tooth, 2, branch saw slide, 3, support, 4, slide hydraulic cylinder, 41, cylinder, 42, telescopic rod, 5, saw blade drive motor, 61, drive wheel, 62, driven wheel, 63, drive, 7, cross arm, 8, guide plate, 9, chute, 201, jaw one, 202, jaw two, 203, jaw connecting arm, 204, jaw drive, 205, articulation axis one, 206, articulation axis two, 207, articulation axis three, 208, articulation axis four.

Detailed Description

The principles and features of the present utility model are described below with examples provided for the purpose of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1-3, one embodiment of the present utility model provides a branch saw comprising:

The saw blade 1 is in a rod-shaped structure and comprises a cutter shaft 11 and cutter teeth 12 arranged on the peripheral surface of the cutter shaft 11;

The branch saw sliding frame 2 is arranged at two end sides of the sawing cutter 1, two ends of the cutter shaft 11 are rotatably connected with the branch saw sliding frame 2, specifically, one end of the cutter shaft 11 is connected to the top end of one branch saw sliding frame 2 through a bearing seat 110, and the other end of the cutter shaft 11 is rotatably connected to the upper part of the other branch saw sliding frame 2;

The support frame 3, the support frame 3 links with branch saw slipping frame 2 in a manner of being able to slide relatively; when in use, the support frame 3 is used as a support piece of the branch saw, and other support mechanisms such as a support arm and the like can be externally connected;

The cylinder 41 of the sliding frame hydraulic cylinder 4 is fixed with the branch saw sliding frame 2, the telescopic rod 42 of the sliding frame hydraulic cylinder is fixedly connected with the supporting frame 3 and used for driving the supporting frame 3 and the branch saw sliding frame 2 to slide relatively, and the telescopic direction of the telescopic rod 42 is vertical to the radial direction of the cutter shaft 11; in order to ensure the driving stability, two groups of sliding frame hydraulic cylinders 4 can be arranged and are respectively connected with the supporting frame 3 and the branch saw sliding frame 2 correspondingly;

The sawing cutter driving motor 5 is specifically a hydraulic motor, the sawing cutter driving motor 5 is connected with the branch saw sliding frame 2, and the output end of the sawing cutter driving motor 5 is in transmission connection with one end of the cutter shaft 11 through a transmission mechanism and is used for driving the cutter shaft 11 to rotate around the axis of the cutter shaft.

When the embodiment is used, the supporting frame 3 is kept fixed; starting a saw cutter driving motor 5 to drive the saw cutter 1 to rotate; the sliding frame hydraulic cylinder 4 is started to enable the telescopic rod 42 to extend or retract from the cylinder 41, and because the end part of the telescopic rod 42 is fixed with the support frame 3, the cylinder 41 is fixed with the branch saw sliding frame 2, so that under the driving of the sliding frame hydraulic cylinder 4, the two branch saw sliding frames 2 can slide forwards or backwards relative to the support frame 3, and further the saw cutting knife 1 connected with the two branch saw sliding frames is driven to approach or keep away from branches to be trimmed, the feeding action of sawing work is realized, the feeding direction is mutually perpendicular to the direction of the cutter shaft 11, and the sawing of the branches can be realized by matching with the rotation of the saw cutting knife 1.

In the utility model, both ends of the saw cutting knife are connecting ends instead of free ends, and the whole branch saw in the use state is kept motionless by the support frame 3, but the sliding frame hydraulic cylinder 4 in the whole branch saw drives the sliding frames of the two branch saws to slide relative to the support frame 3, so that the feeding direction is vertical to the cutting knife axial direction, the shaking phenomenon of the rod-shaped saw cutting knife in the process of cutting branches at high altitude can be effectively avoided, the cutting effect on the branches at high altitude is further improved, the good cutting effect can be still achieved when the thick branches are processed, and the application range is wider.

In a preferred embodiment of the present utility model, the saw cutter driving motor 5 is disposed at the lower side of the saw cutter 1 and a predetermined distance is left between the saw cutter driving motor and the saw cutter 1, and an output end of the saw cutter driving motor 5 is in transmission connection with one end of the cutter shaft 11 through a transmission mechanism. The miniature design is beneficial to the travel of the branch saw in the gap of the high-altitude branch, and meanwhile, a yielding space is provided for the sawn branch. In this embodiment, the transmission mechanism includes a driving wheel 61 fixedly connected to the output end of the saw cutter driving motor 5 and a driven wheel 62 fixedly connected to one end of the cutter shaft 11, where the driving wheel 61 and the driven wheel 62 are connected to the branch saw sliding frame 2 in a manner of being rotatable around the axis thereof, the driving wheel 61 is fixedly connected to the output end of the saw cutter driving motor 5 through a spline, and the driving wheel 61 is connected to the driven wheel 62 through a transmission member 63.

In a preferred embodiment of the present utility model, the driving wheel 61 and the driven wheel 62 are gear-type, and the transmission member 63 is gear-type accordingly. When the output shaft of the saw cutter driving motor 5 rotates, a plurality of gears are driven to be meshed for transmission, and then the saw cutter 1 is driven to rotate, and at the moment, the branch saw sliding frame 2 covered outside the transmission mechanism forms a gear box structure. Specifically, the driving gear and the driven gear are respectively connected with the branch saw sliding frame 2 in a manner of rotating around the axis thereof through bearings, the output ends of the driving gear and the saw cutter driving motor 5 are fixedly connected through splines, the driving gear and the driven gear are connected through a plurality of gears meshed with each other, five gears are adopted to be meshed with each other in vertical direction in sequence as shown in fig. 2, and each gear is connected with the branch saw sliding frame 2 in a manner of rotating around the axis thereof through bearings. The device has the advantages that the transmission stability is good, and a plurality of meshed gears can keep a certain distance between the cutter shaft 11 and the saw cutter driving motor 5, so that a yielding space is provided for the sawing process of thicker branches.

In a preferred embodiment of the utility model, the transmission mechanism is hidden in the branch saw sliding frame 2, which is beneficial to miniaturization of products on one hand and can prevent sundries from falling into the transmission mechanism to cause clamping stagnation in the process of sawing branches on the other hand.

In other embodiments of the present utility model, the driving wheel 61 and the driven wheel 62 may also be in a pulley configuration (e.g., a synchronous pulley) or a sprocket configuration, and the transmission member 63 may be in a belt transmission configuration (e.g., a synchronous belt) or a chain transmission configuration (e.g., a chain), respectively.

In a preferred embodiment of the present utility model, the bearing housing 110 is removably attached to the branch saw slide 2 to facilitate assembly and replacement of the arbor 11.

It is worth mentioning that the utility model can be applied, but not limited to, to sawing high branches.

In a preferred embodiment of the utility model, the cylinder 41 of the sliding frame hydraulic cylinder 4 is arranged beside the branch saw sliding frame 2 in parallel, so that the overall layout is more compact. More preferably, the cylinder 41 of the sliding frame hydraulic cylinder 4 and the branch saw sliding frame 2 are arranged as an integral structure.

In a preferred embodiment of the utility model, a cross arm 7 is further connected between the two branch saw sliding frames 2, which is beneficial to ensuring the synchronism of the two sliding frame hydraulic cylinders 4, and a preset distance is reserved between the cross arm 7 and the saw cutter 1, so that a space for letting down is provided for the saw cutter to cut branches, especially thicker branches.

In a preferred embodiment of the present utility model, the support frame 3 is fixedly connected with a guide plate 8, the guide plate 8 is disposed at the outer sides of the branch saw sliding frame 2 and the cylinder 41 of the sliding frame hydraulic cylinder 4, the cross section of the guide plate 8 is L-shaped, and a rectangular chute 9 for sliding the branch saw sliding frame 2 is formed between the guide plate 8 and the support frame 3, so that the assembly of the branch saw sliding frame and the branch saw sliding frame 2 is more compact, and the sliding operation of the branch saw sliding frame 2 is ensured to be more stable. In addition, in other embodiments, a sliding rail can be directly arranged on the branch saw sliding frame 2, and correspondingly, the supporting frame 3 is provided with a sliding groove corresponding to the sliding rail; or a sliding groove is arranged on the side end face of the branch saw sliding frame 2, and correspondingly, a sliding rail is arranged on the supporting frame 3 corresponding to the sliding groove. Can provide conditions for the relative sliding of the support frame 3 and the branch saw sliding frame 2.

As shown in fig. 4 and 5, another embodiment of the present utility model provides a tree branch grabbing and sawing mechanism, which further comprises a grabbing mechanism, wherein the grabbing mechanism is arranged adjacent to the tree branch saw, on the basis of the tree branch saw of the previous embodiment.

In a preferred embodiment of the present utility model, the grabbing mechanism includes a support frame 3, a first clamping jaw 201, a second clamping jaw 202, a clamping jaw connecting arm 203, and a clamping jaw driving arm 204, where the first clamping jaw 201 is disposed opposite to the second clamping jaw 202, the middle part of the first clamping jaw 201 is hinged to the support frame 3 through a first hinge shaft 205, and the end part of the second clamping jaw 202 is hinged to the support frame 3 through a fourth hinge shaft 208, the end part of the first clamping jaw 201 is hinged to two ends of the clamping jaw connecting arm 203 through a second hinge shaft 206, and the middle part of the second clamping jaw 202 is hinged to two ends of the clamping jaw connecting arm 203 through a third hinge shaft 207, and two ends of the clamping jaw driving arm 204 are hinged to the end part of the first clamping jaw 201 and the support frame 3. The clamping jaw I201 and the clamping jaw II 202 are controlled to open and close by the telescopic action of the clamping jaw drive 204 in operation, so as to realize the grabbing and releasing. The device has the advantages of large openable angle and capability of grabbing various branches with different thickness.

Before the branch grabbing and sawing mechanism of the embodiment is used, the clamping jaw I201 and the clamping jaw II 202 protrude outwards from the sawing knife 1. When the device is used, the two clamping jaws are used for clamping the branches to be trimmed by the grabbing mechanism, then the saw cutter driving motor and the sliding frame hydraulic cylinder 4 are started, the saw cutter 1 is used for sawing the branches, and after sawing is completed, the grabbing mechanism is used for clamping the branches to be trimmed so as to avoid free falling.

In this embodiment, clamping jaw drive etc. are connected with support frame 3 respectively, namely with branch saw sharing same support frame 3, overall structure is compacter.

Claims (13)

1. A branch saw, which is characterized by comprising

The saw cutter (1) is of a rod-shaped structure and comprises a cutter shaft (11) and cutter teeth (12) arranged on the peripheral surface of the cutter shaft (11);

The branch saw sliding frame (2) is arranged at two end sides of the sawing cutter (1), and two ends of the cutter shaft (11) are rotationally connected with the branch saw sliding frame (2);

the support frame (3), the support frame (3) is connected with the branch saw sliding frame (2) in a relatively sliding manner;

The cylinder barrel (41) of the sliding frame hydraulic cylinder (4) is connected with the branch saw sliding frame (2), and the telescopic rod (42) of the sliding frame hydraulic cylinder is connected with the supporting frame (3) and used for driving the supporting frame (3) and the branch saw sliding frame (2) to slide relatively; the telescopic direction of the telescopic rod (42) is vertical to the radial direction of the cutter shaft (11);

The sawing cutter driving motor (5), the sawing cutter driving motor (5) is connected with the branch saw sliding frame (2), and the output end of the sawing cutter driving motor (5) is in transmission connection with one end of the cutter shaft (11) and is used for driving the cutter shaft (11) to rotate around the axis of the cutter shaft.

2. Branch saw according to claim 1, characterized in that the saw blade drive motor (5) is arranged at the lower side of the saw blade (1) and is at a preset distance from the saw blade (1), and the output end of the saw blade drive motor (5) is in transmission connection with one end of the cutter shaft (11) through a transmission mechanism.

3. A tree branch saw according to claim 2, characterized in that the transmission mechanism is concealed in the tree branch saw slide (2).

4. A branch saw according to claim 2 or 3, wherein the transmission mechanism comprises a driving wheel (61) fixedly connected to the output end of the saw cutter driving motor (5) and a driven wheel (62) fixedly connected to one end of the cutter shaft (11), the driving wheel (61) and the driven wheel (62) are connected with the branch saw sliding frame (2) in a manner of rotating around the axis of the driving wheel and the driven wheel (62) in a transmission connection through a transmission piece (63).

5. Branch saw according to claim 4, characterized in that the driving wheel (61) and the driven wheel (62) are of gear, pulley or sprocket construction, and correspondingly the transmission member (63) is of gear, belt or chain transmission construction.

6. The tree branch saw according to claim 4, wherein the other end of the arbor (11) opposite to the driven wheel (62) is connected to the tree branch saw slide (2) through a bearing housing (110), and the bearing housing (110) is detachably connected to the tree branch saw slide (2).

7. A branch saw according to claim 1 or 2 or 3, characterized in that the cylinders (41) of the glide frame hydraulic cylinders (4) are arranged side by side of the branch saw glide frame (2).

8. A branch saw according to claim 1, 2 or 3, wherein the support frame (3) is fixedly connected with a guide plate (8), and a sliding groove (9) for sliding the branch saw sliding frame (2) is formed between the guide plate (8) and the support frame (3).

9. A branch saw according to claim 1 or 2 or 3, characterized in that the branch saw sliding frame (2) is provided with a sliding rail or a sliding groove corresponding to the supporting frame (3).

10. A branch saw according to claim 1 or 2 or 3, wherein the cutter teeth (12) are detachably connected to the arbor (11).

11. A branch grabbing and sawing mechanism, characterized by comprising a grabbing mechanism and a branch saw as claimed in claim 1, 2 or 3, wherein the grabbing mechanism is arranged adjacent to the branch saw and comprises clamping jaws connected with a supporting frame (3) and a clamping jaw drive (204) for driving the clamping jaws to perform grabbing actions.

12. The branch grabbing and sawing mechanism according to claim 11, wherein the clamping jaw comprises a clamping jaw I (201) and a clamping jaw II (202), the clamping jaw I (201) and the clamping jaw II (202) are oppositely arranged and are respectively hinged on the supporting frame (3), and the clamping jaw driving device (204) is respectively connected with the clamping jaw I (201) and the clamping jaw II (202) and is used for driving the clamping jaw I (201) and the clamping jaw II (202) to open and close.

13. The branch grabbing and sawing mechanism according to claim 12, further comprising a clamping jaw connecting arm (203), wherein the middle part of the clamping jaw I (201) and the end part of the clamping jaw II (202) are respectively hinged with the support frame (3), the end part of the clamping jaw I (201) and the middle part of the clamping jaw II (202) are respectively hinged with two ends of the clamping jaw connecting arm (203), and two ends of the clamping jaw driving (204) are respectively hinged with the end part of the clamping jaw I (201) and the support frame (3).