CN221228311U - Felling mechanism - Google Patents

Abstract

The utility model relates to a felling mechanism, which belongs to the field of tree pruning, and comprises a working frame and a turning frame, wherein the working frame is hinged at the front end of the working frame through a hinge shaft A; the overturning oil cylinder is respectively connected with the overturning frame and the working frame and is used for driving the overturning frame to rotate around the hinge shaft A; the swing rotary seat is hinged at the front end of the roll-over stand through a hinge shaft B, and the hinge shaft B and the hinge shaft A are mutually perpendicular; the swing oil cylinder is respectively connected with the swing rotary seat and the roll-over stand and is used for driving the swing rotary seat to rotate around the hinge shaft B; the support frame is connected to the front end of the swing rotary seat through a slewing bearing and is used for bearing the grabbing mechanism and the sawing mechanism; the utility model can realize rotation adjustment of each dimension, and the angle adjustment is more flexible and changeable.

Description

Felling mechanism

Technical Field

The utility model relates to the technical field of tree pruning, in particular to a felling mechanism.

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. To avoid the danger, the greening trees need to be trimmed.

In the branch pruning machinery in the prior art, as disclosed in the utility model patent with the publication number of CN204259479U, a mechanical gripper and a circular saw are arranged on a working head of the integrated operation vehicle, a small bevel gear is driven by a motor to rotate during operation, a large bevel gear is driven by a rotary table to rotate, the adjustment of the orientations of the mechanical gripper and the circular saw can be realized, and the orientations of the mechanical gripper can be further adjusted by driving an oscillating angle oil cylinder of the working head to oscillate and driving a rotary head to rotate 360 degrees around the axis of the working head, so that the mechanical gripper is close to branches to be pruned at a more proper angle.

However, the above prior art has the following problems: on one hand, the angle adjustment of the saw depends on the hinging relation between the working head bracket and the rotating head and the rotation of the rotating head around the axis of the rotating head, the adjusting angle is limited, and the problem of poor adjustability exists in the high-altitude sawing process of branches; on the other hand, when the circular saw structure is used for sawing thick branches, the circular saw structure needs to be large enough, the whole size of the saw is large, the whole structure is not compact enough, the miniaturization of the working head structure is not facilitated, the larger the size of the working head is, the more easily the branch saw is disturbed by the side branches when the high-altitude branches are trimmed and used, the shuttle of the saw in the gap of the high-altitude branches is not facilitated, and the cutting saw is affected to be used for sawing selected branches under the condition of complex branches.

Disclosure of Invention

The utility model provides a felling mechanism aiming at the problems in the prior art, which aims to solve the technical problems that: the angle adjustment of the cutting mechanism is not flexible enough; the other technical problem to be solved is that: the whole structure is not compact enough, is not beneficial to the miniaturization of the whole product, and is therefore not convenient for the shuttle to travel in the complicated branches to reach the target branch position.

The technical scheme for solving the technical problems is as follows: the felling mechanism is characterized by comprising a working frame and a felling mechanism

The turnover frame is hinged at the front end of the working frame through a hinge shaft A;

The overturning oil cylinder is respectively connected with the overturning frame and the working frame and is used for driving the overturning frame to rotate around the hinge shaft A;

The swing rotary seat is hinged at the front end of the roll-over stand through a hinge shaft B, and the hinge shaft B and the hinge shaft A are mutually perpendicular;

the swing oil cylinder is respectively connected with the swing rotary seat and the roll-over stand and is used for driving the swing rotary seat to rotate around the hinge shaft B;

The support frame is connected to the front end of the swing rotary seat through a slewing bearing and is used for bearing the grabbing mechanism and the sawing mechanism.

Further, the sawing mechanism includes:

The felling mechanism sliding frame is connected with the supporting frame in a relatively sliding manner;

The sawing cutter is in a rod-shaped structure and comprises a cutter shaft and cutter teeth arranged on the peripheral surface of the cutter shaft, and two ends of the cutter shaft are rotationally connected with a felling mechanism sliding frame;

The slipping frame is driven and connected with the slipping frame of the felling mechanism and the supporting frame respectively and is used for driving the slipping frame of the felling mechanism and the supporting frame to slide relatively so as to provide power for feeding of the saw cutter, and the feeding direction of the saw cutter is perpendicular to the radial direction of the cutter shaft;

The saw cutter is driven and connected with the cutter shaft and used for driving the cutter shaft to rotate around the axis of the cutter shaft.

Further, the saw cutter driving device 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 device is in transmission connection with one end of the cutter shaft through a transmission mechanism.

Furthermore, the transmission mechanism comprises a driving wheel fixedly connected to the driving output end of the sawing cutter and a driven wheel fixedly connected to one end of the cutter shaft, the driving wheel and the driven wheel are connected with the felling mechanism 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 sliding frame is driven by a hydraulic oil cylinder, a cylinder barrel of the hydraulic oil cylinder is connected with the sliding frame of the felling mechanism, and a telescopic rod of the hydraulic oil cylinder is connected with the supporting frame.

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

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.

Further, the overturning oil cylinder is hinged with the overturning frame through a connecting rod structure.

The beneficial effects of the utility model are as follows:

1. According to the utility model, through the working frame, the roll-over frame, the swing rotary seat and the support frame which is rotatably connected to the front end of the swing rotary seat and is used for bearing the grabbing mechanism and the sawing mechanism, the hinge shaft A is mutually perpendicular to the hinge shaft B, and the rotary bearings are cooperatively arranged, the rotation motion can be realized when the support frame carries the grabbing mechanism and the sawing mechanism to axially rotate around the rotary bearings, namely, the rotation motion is realized, namely, the swing rotary seat carries the support frame to rotate around the hinge shaft B, namely, the swing motion is realized, the roll-over frame carries the swing rotary seat and the support frame to rotate around the hinge shaft A, namely, the turning motion is realized, and the like, so that the angle adjustment is more flexible and changeable, and the working head can obtain enough degrees of freedom to ensure that the grabbing mechanism and the sawing mechanism obtain good working angles.

2. The utility model further enables the whole structure to be more compact and the product to be more miniaturized through the specific structures of the sawing mechanism and the grabbing mechanism and the connection relation between the rotary support and the swinging rotary seat, and reduces the interference of the working head by the side branches, thereby being beneficial to the travel of the branch saw in the gap of the high-altitude branches to reach the sawing target position.

3. According to the utility model, the connection relation between the sawing mechanism, especially the rod-shaped sawing cutter, the branch saw sliding frame, the supporting frame and the like is further changed compared with the prior art, so that the connection structure between the sawing cutter and the supporting piece and the driving piece of the sawing cutter are changed, both ends of the sawing cutter are connected ends instead of free ends, the supporting frame is kept motionless when sawing operation is carried out, the branch saw sliding frame which is in sliding connection with the supporting frame is utilized to carry out feeding action under the driving of the sliding frame, the feeding direction is perpendicular to the sawing cutter axial direction, the shaking phenomenon caused by the movement of the supporting arm or the movement of the fan-shaped track in the high-altitude sawing cutter cutting process of branches can be effectively avoided, the sawing effect on high-altitude branches is better, and the sawing effect on thick branches can be still achieved, and the application range is wider.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of an embodiment of the present utility model;

FIG. 3 is a schematic view of a support frame carrying a grabbing mechanism and a sawing mechanism according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a grabbing mechanism according to an embodiment of the present utility model;

FIG. 5 is a schematic cross-sectional view of a sawing mechanism according to an embodiment of the utility model;

FIG. 6 is another cross-sectional structural schematic view of a sawing mechanism according to an embodiment of the utility model;

In the figure: 1. work frame, 2. Grabbing mechanism, 201. Clamping jaw I, 202. Clamping jaw II, 203. Clamping jaw connecting arm, 204. Clamping jaw driving, 3. Sawing mechanism, 301. Sawing cutter, 311. Cutter shaft, 312. Cutter teeth, 302. Logging mechanism sliding frame, 304. Sliding frame driving, 305. Sawing cutter driving, 361. Driving wheel, 362. Driven wheel, 363. Driving member, 308. Guide plate, 309. Chute, 4. Roll-over frame, 41. Roll-over cylinder, 5. Swinging rotary seat, 51. Swinging cylinder, 6. Slewing bearing, 7. Supporting frame, 81. Hinging shaft A,82. Hinging shaft B,91. Connecting rod A,92. Connecting rod B.

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, the logging mechanism of the present embodiment includes a work frame 1 and

A roll-over stand 4 hinged to the front end of the work stand 1 through a hinge shaft a 81;

a roll-over cylinder 41 connected to the roll-over stand 4 and the work stand 1, respectively, for driving the roll-over stand 4 to rotate about the hinge axis a 81;

The swing rotary seat 5 is hinged at the front end of the roll-over stand 4 through a hinge shaft B82, and the hinge shaft B82 and the hinge shaft A81 are mutually perpendicular;

A swing cylinder 51 connected to the swing rotary base 5 and the roll-over stand 4, respectively, for driving the swing rotary base 5 to rotate about the hinge axis B82;

the support frame 7 is connected to the front end of the swing rotary seat 5 through a slewing bearing 6, and the plane where the slewing bearing 6 is positioned is parallel to the axes of the hinge shaft A81 and the hinge shaft B82 respectively, so that the angle adjustment of three dimensions is realized; the support frame is used for bearing the grabbing mechanism 2 and the sawing mechanism 3.

Through the design of the structure, the whole felling mechanism can realize that the support frame 7 carries the grabbing mechanism 2 and the sawing mechanism 3 to rotate around the rotating support 6 in the axial direction to implement the rotating action, the swinging rotary seat 5 carries the support frame 7 to rotate around the hinging shaft B82 to implement the swinging action, the overturning frame 4 carries the swinging rotary seat 5 and the support frame 7 to rotate around the hinging shaft A81 to implement the rotating adjustment of a plurality of dimensions such as the overturning action, and the angle adjustment is more flexible and changeable. After the angle is adjusted, the grabbing mechanism is used for grabbing the branches to be pruned, and the sawing mechanism is used for sawing the branches.

In a preferred embodiment of the utility model, the sawing mechanism 3 comprises:

A logging mechanism slide frame 302 connected to the support frame 7 in a relatively slidable manner;

The saw cutter 301 is in a rod-shaped structure and comprises a cutter shaft 311 and cutter teeth 312 arranged on the peripheral surface of the cutter shaft 311, and two ends of the cutter shaft 311 are rotationally connected with a felling mechanism sliding frame 302;

The sliding frame drive 304 is respectively connected with the felling mechanism sliding frame 302 and the support frame 7, and is used for driving the felling mechanism sliding frame 302 and the support frame 7 to slide relatively to provide power for feeding the saw cutting knife, and the feeding direction of the saw cutting knife is perpendicular to the radial direction of the cutter shaft 311; the sliding frame driving 304 of the embodiment adopts a hydraulic cylinder, a cylinder 341 of the hydraulic cylinder is connected with the sliding frame 302 of the felling mechanism, and a telescopic rod 342 of the hydraulic cylinder is connected with the supporting frame 7. The cylinder 341 is preferably arranged side by side of the logging mechanism skid 302, making the overall layout more compact. More preferably, the cylinder 341 and the branch saw slide 302 may be provided as a unitary structure.

The saw blade drive 305, in this embodiment, is a drive motor, which is connected to the arbor 311 for driving the arbor 311 to rotate about its axis.

The grabbing mechanism 2 and the sawing mechanism 3 are arranged closely adjacent, and the structure is compact. When the grabbing mechanism 2 grabs the branches to be pruned, the saw cutter driving 305 is started to drive the saw cutter 301 to rotate; the sliding frame driving 304 is started to enable the telescopic rod 342 to extend or retract from the cylinder 341, and because the end part of the telescopic rod 342 is fixed with the supporting frame 7, the cylinder 341 is fixed with the branch saw sliding frame 302, so that under the driving of the sliding frame driving 304, the two branch saw sliding frames 302 can slide forwards or backwards relative to the supporting frame 7, and further the sawing knife 301 connected with the two branch saw sliding frames is driven to approach or depart 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 311, and the sawing of the branches can be realized by matching with the rotation of the sawing knife 301. Wherein, both ends of saw cut 301 are the link rather than the free end, and the whole branch saw under the user state keeps motionless because of support frame 7, but its inside sliding frame drive 304 drive two branch saw sliding frame relative support frame 7 slides for the direction of feed is perpendicular with saw cut arbor, can effectively avoid the shake phenomenon that the bar saw cut produced in the high altitude saw cuts the branch in-process, and then improves the sawing effect to the high altitude branch, still can reach fine sawing effect when handling thick branch, and application scope is wider.

In a preferred embodiment of the present utility model, the support frame 7 is fixedly connected with a guide plate 308, the guide plate 308 is disposed at the outer sides of the branch saw sliding frame 302 and the cylinder 41 of the sliding frame driver 304, the cross section of the guide plate 308 is L-shaped, and a rectangular chute 309 for sliding the branch saw sliding frame 302 is formed between the guide plate 308 and the support frame 7, so that the assembly of the support frame 7 and the branch saw sliding frame 302 is more compact, and the sliding operation of the branch saw sliding frame 302 is ensured to be more stable. In addition, in other embodiments, a sliding rail may be directly disposed on the branch saw sliding frame 302, and correspondingly, the supporting frame 7 is provided with a sliding slot corresponding to the sliding rail; or a sliding groove is arranged on the side end surface of the branch saw sliding frame 302, and correspondingly, a sliding rail is arranged on the supporting frame 7 corresponding to the sliding groove. Provides for the relative sliding of the support frame 7 and the branch saw slide 302.

In a preferred embodiment of the present utility model, the saw cutter driving device 305 is disposed at the lower side of the saw cutter 301 and a preset distance is left between the saw cutter driving device and the saw cutter 301, and an output end of the saw cutter driving device 305 is in transmission connection with one end of the cutter shaft 311 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 361 fixedly connected to the output end of the saw cutter driving 305 and a driven wheel 362 fixedly connected to one end of the cutter shaft 311, where the driving wheel 361 and the driven wheel 362 are connected to the logging mechanism sliding frame 302 in a manner of being rotatable around the axis thereof, the driving wheel 361 is fixedly connected to the output end of the saw cutter driving 305 through a spline, and the driving wheel 361 is connected to the driven wheel 362 in a transmission manner through a transmission member 363.

In a preferred embodiment of the present utility model, the driving wheel 361 and the driven wheel 362 are gear structures, and accordingly, the transmission member 363 is gear transmission structures. When the output shaft of the saw cutter driving 305 rotates, the plurality of gears are driven to engage and drive, and then the saw cutter 301 is driven to rotate, and at this time, the branch saw sliding frame 302 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 302 in a manner of rotating around the axis thereof through bearings, the output ends of the driving gear and the saw cutter driving 305 are fixedly connected through splines, the driving gear and the driven gear are connected through a plurality of gears meshed with each other, as shown in fig. 5, the gears are sequentially meshed and connected in the vertical direction, and each gear is connected with the branch saw sliding frame 302 in a manner of rotating around the axis thereof through bearings. The device has the advantages that the transmission stability is good, and the plurality of meshed gears can keep a certain distance between the cutter shaft 311 and the saw cutter driving 305, so that a yielding space is provided for the sawing process of thicker branches.

In a preferred embodiment of the present utility model, the other end of the cutter shaft 311 away from the driven wheel 362 is connected to the logging mechanism sliding frame 302 through a bearing block 310, and the bearing block 310 is detachably connected to the logging mechanism sliding frame 302.

In a preferred embodiment of the present utility model, the transmission mechanism is hidden in the branch saw sliding frame 302, which is beneficial to miniaturization of products on one hand, and can prevent sundries from falling into the transmission mechanism to cause jamming in the process of sawing branches on the other hand.

In a preferred embodiment of the present utility model, the driving wheel 361 and the driven wheel 362 may also have a pulley structure (e.g., a synchronous pulley) or a sprocket structure, and accordingly, the transmission member 363 may have a belt transmission structure (e.g., a synchronous belt) or a chain transmission structure (e.g., a chain).

In a preferred embodiment of the utility model, the gripping mechanism 2 comprises gripping jaws connected to the support frame 7 and a jaw drive 204 for driving the gripping jaws to perform a gripping action. Specifically, the clamping jaw comprises a clamping jaw I201 and a clamping jaw II 202, the clamping jaw I201 and the clamping jaw II 202 are oppositely arranged and are respectively hinged on the supporting frame 7, and a clamping jaw driving 204 is respectively connected with the clamping jaw I201 and the clamping jaw II 202 and is used for driving the clamping jaw I201 and the clamping jaw II 202 to open and close. The grabbing mechanism 2 further comprises a clamping jaw connecting arm 203, the middle part of the clamping jaw I201 and the end part of the clamping jaw II 202 are respectively hinged with the supporting frame 7, the end part of the clamping jaw I201 and the middle part of the clamping jaw II 202 are respectively hinged with the two ends of the clamping jaw connecting arm 203, and the two ends of the clamping jaw driving 204 are respectively hinged with the end part of the clamping jaw I201 and the supporting frame 7. In operation, the first clamping jaw 201 and the second clamping jaw 202 are controlled to open and close by the telescopic action of the clamping jaw drive 204, so as to perform grabbing and releasing. The device has the advantages of large openable angle and capability of grabbing various branches with different thickness.

In a preferred embodiment of the present utility model, the overturning cylinder 41 is hinged to the overturning frame 4 through a connecting rod structure, so that the overturning cylinder 41 drives the overturning frame 4 to overturn around the hinge axis a81 at a large angle. In this embodiment, one end of the link a91 is hinged to the working frame 1, one end of the link B92 is hinged to the roll-over frame 4, the other end of the link a91 is hinged to the other end of the link B92, and is hinged to the telescopic rod of the roll-over cylinder 41 through a hinge shaft of the link a and the link B, and the cylinder body of the roll-over cylinder 41 is hinged to the working frame 1.

Claims (10)

1. The felling mechanism is characterized by comprising a working frame (1) and

The turnover frame (4) is hinged at the front end of the working frame (1) through a hinge shaft A (81);

The overturning oil cylinder (41) is respectively connected with the overturning frame (4) and the working frame (1) and is used for driving the overturning frame (4) to rotate around the hinge shaft A (81);

The swing rotary seat (5) is hinged at the front end of the turnover frame (4) through a hinge shaft B (82), and the hinge shaft B (82) and the hinge shaft A (81) are mutually perpendicular;

The swing oil cylinder (51) is respectively connected with the swing rotary seat (5) and the turnover frame (4) and is used for driving the swing rotary seat (5) to rotate around the hinge shaft B (82);

the support frame (7) is connected to the front end of the swing rotary seat (5) through the slewing bearing (6), and the support frame is used for bearing the grabbing mechanism (2) and the sawing mechanism (3).

2. A logging mechanism according to claim 1, characterized in that the sawing mechanism (3) comprises a logging mechanism skid (302) connected in a relatively slidable manner to a support frame (7);

The sawing cutter (301) is of a rod-shaped structure and comprises a cutter shaft (311) and cutter teeth (312) arranged on the peripheral surface of the cutter shaft (311), and two ends of the cutter shaft (311) are rotationally connected with a felling mechanism sliding frame (302);

the sliding frame drive (304) is respectively connected with the felling mechanism sliding frame (302) and the support frame (7) and is used for driving the felling mechanism sliding frame (302) and the support frame (7) to slide relatively to provide power for feeding the saw cutting knife, and the feeding direction of the saw cutting knife is vertical to the radial direction of the cutter shaft (311);

And the saw cutter driving device (305) is connected with the cutter shaft (311) and is used for driving the cutter shaft (311) to rotate around the axis of the cutter shaft.

3. A logging mechanism according to claim 2, characterized in that the saw cutter drive (305) is arranged at the underside of the saw cutter (301) with a predetermined distance from the saw cutter (301), the output end of the saw cutter drive (305) being in transmission connection with one end of the cutter shaft (311) via a transmission mechanism.

4. A logging mechanism according to claim 3, characterized in that the transmission mechanism comprises a driving wheel (361) fixedly connected to the output end of the saw cutter drive (305) and a driven wheel (362) fixedly connected to one end of the cutter shaft (311), the driving wheel (361) and the driven wheel (362) are connected with the logging mechanism sliding frame (302) in a rotatable manner around the axis thereof, and the driving wheel (361) is in transmission connection with the driven wheel (362) through a transmission piece (363).

5. A logging mechanism according to claim 4, characterized in that the driving wheel (361) and the driven wheel (362) are of gear, pulley or sprocket type, and the transmission (363) is of gear, belt or chain type, respectively.

6. A logging mechanism according to claim 2, characterized in that the carriage drive (304) is a hydraulic cylinder, the cylinder of which is connected to the logging mechanism carriage (302) and the telescopic rod of which is connected to the support frame (7).

7. A logging mechanism according to claim 1, characterized in that the gripping mechanism (2) comprises a jaw connected to the support frame (7) and a jaw drive (204) for driving the jaw to perform a gripping action.

8. The logging mechanism as claimed in claim 7, wherein the clamping jaw comprises a clamping jaw one (201) and a clamping jaw two (202), the clamping jaw one (201) is opposite to the clamping jaw two (202) and is respectively hinged on the supporting frame (7), and the clamping jaw driving device (204) is respectively connected with the clamping jaw one (201) and the clamping jaw two (202) and is used for driving the clamping jaw one (201) and the clamping jaw two (202) to open and close.

9. The logging mechanism as claimed in claim 8, wherein the gripping mechanism (2) further comprises a jaw connecting arm (203), the middle part of the jaw one (201) and the end part of the jaw two (202) are respectively hinged with the support frame (7), the end part of the jaw one (201) and the middle part of the jaw two (202) are respectively hinged with the two ends of the jaw connecting arm (203), and the two ends of the jaw driving (204) are respectively hinged with the end part of the jaw one (201) and the support frame (7).

10. A logging mechanism according to claim 1, characterized in that the turning cylinder (41) is hinged to the turning frame (4) by means of a link structure.