CN219288222U - Tree trimmer for forestry engineering - Google Patents

Abstract

The utility model belongs to the technical field of forestry engineering, and particularly relates to a tree trimmer for forestry engineering, which comprises a power unit, a cutting saw unit and a supporting rod between the power unit and the cutting saw unit, wherein the cutting saw unit comprises a guide plate and a saw chain, the saw chain is in transmission connection with the power unit and rotates along a guide groove at the edge of the guide plate, the cutting saw unit also comprises a scissor blade, the tail part of the scissor blade is fixedly connected with the supporting rod near the guide plate, the scissor blade and the saw chain form a scissor shape, the cutting edge of the scissor blade faces the saw chain, and the included angle between the scissor blade and the saw chain is 30-45 degrees. According to the utility model, the scissors blades are arranged, the scissors blades and the saw chain are used for forming a scissors-shaped structure with a certain fixed angle to clamp the branches, and when the saw chain cuts the upper ends of the saw branches, the scissors blades cut the bark surfaces at the lower ends of the branches, so that the bark at the lower ends of the falling branches is prevented from driving part of the bark of the trunk of the tree to be torn off together.

Description

Tree trimmer for forestry engineering

Technical Field

The utility model belongs to the technical field of forestry engineering, and particularly relates to a tree trimmer for forestry engineering.

Background

Through the reasonable branch of pruning to trees, can help trees better grow, but forestry engineering is higher with trees, and its branch is also up to several meters, prunes the branch very inconvenient, in the prior art, adopts handheld high branch saw to prune with trees for forestry engineering in order to solve this problem generally, and high branch saw includes engine, baffle, saw chain and the bracing piece between engine and the baffle, and the saw chain rotates with the help of the guide slot of engine along the baffle edge, and the staff only need hand grab handle on engine and the bracing piece be close to wait to prune the branch can.

However, when the branches are trimmed, the branches are sawn from top to bottom, and under the action of gravity of the branches, the branches fall off when the branches are not completely sawn, so that the bark at the lower end of the falling branches can drive partial bark of the trunk of the tree to be torn off together, and great damage is caused to the tree.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a tree trimmer for forestry engineering, which is provided with a scissor blade, wherein the scissor blade and a saw chain are used for forming a scissor-shaped structure with a certain fixed angle to clamp branches, and when the saw chain cuts the upper end of each branch, the scissor blade cuts the bark surface at the lower end of each branch, so that the bark at the lower end of each falling branch is prevented from driving part of the bark of a trunk of a tree to be torn off together.

The utility model adopts the specific technical scheme that:

the utility model provides a tree pruning machine for forestry engineering, includes power pack, cuts the bracing piece between saw unit and the power pack, cut saw unit and include baffle and saw chain, the saw chain forms the transmission with the power pack and is connected and rotate along the guide slot at baffle edge, cut saw unit still includes the scissors blade, be close to baffle department fixed connection on scissors blade afterbody and the bracing piece, the scissors blade forms the scissors form with the saw chain, the cutting edge of scissors blade is towards the saw chain, and the contained angle between scissors blade and the saw chain is 30-45.

The acute angle between the saw chain and the straight line where the supporting rod is located is 15 degrees to 25 degrees.

The shear blade is provided with an auxiliary hole.

The scissors blade is L-shaped, and a cutting edge is further arranged on the inner side of the bending part of the scissors blade.

The tail of the shear blade is omega-shaped, an omega-shaped fixing half ring matched with the tail of the shear blade is additionally arranged, the fixing half ring and the tail of the shear blade form a circular fixing ring under the action of a fixing bolt, a fixing protrusion is arranged on the support rod, which is close to the guide plate, and the fixing ring is sleeved on the fixing protrusion and is fixed by means of the fixing bolt.

The radius of the fixing protrusion is larger than that of the fixing semi-ring.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the scissors blades are arranged, the scissors blades and the saw chain form a scissors-shaped structure with a certain fixed angle to clamp the branches, the scissors blades cut the bark surface at the lower end of the branches when the saw chain cuts the upper end of the branches, so that the bark surface at the lower end of the branches is cut off by the scissors blades, the branches directly drop, and partial barks of the tail parts of the branches and barks of the branches, which are connected with trunks of trees, are not torn off together, and damage to the trees is avoided.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the saw unit;

FIG. 3 is a schematic diagram of the operation of the present utility model;

FIG. 4 is a schematic structural view of a retaining ring;

in the attached drawings, 1, a power unit, 2, a supporting rod, 3, a guide plate, 4, a saw chain, 5, a scissor blade, 6, an auxiliary hole, 7, a fixed semi-ring, 8, a fixing bolt, 9, a fixing ring, 10 and a fixing protrusion.

Detailed Description

The utility model is further described with reference to the accompanying drawings and specific examples:

the utility model provides a tree pruning machine for forestry engineering, includes power pack 1, cuts saw unit and power pack 1 and cuts bracing piece 2 between the saw unit, cut saw unit and include baffle 3 and saw chain 4, saw chain 4 forms the transmission with power pack 1 and is connected and rotate along the guide slot at baffle 3 edges, cut saw unit still includes scissor 5, be close to baffle 3 fixed connection on scissor 5 afterbody and the bracing piece 2, scissor 5 forms scissors form with saw chain 4, and the cutting edge of scissor 5 is towards saw chain 4, and the contained angle between scissor 5 and the saw chain 4 is 30 ~ 45.

In the specific embodiment, as shown in fig. 1-4, the scissors blade 5 is arranged, the scissors blade 5 and the saw chain 4 form a scissors-shaped structure with a certain fixed angle to clamp the branches, in the process that the saw chain 4 cuts the branches, a counter-vibration force is generated between the saw chain 4 and the branches, so that the guide plate 3 has a trend of moving in the opposite direction along the rotation direction of the saw chain 4, but under the control of manual operation, the guide plate 3 can be blocked from moving in the opposite direction, so that a small range of reciprocating motion is formed, and because the guide plate 3 is fixedly connected with the supporting rod 2, the scissors blade 5 also forms a small range of reciprocating motion, the bark surface at the lower end of the branches is cut off, so that the branches directly drop, the parts of the branches, which are connected with the bark of a tree trunk, are prevented from being damaged, and in addition, the angle of 30 degrees between the guide plate 5 and the saw chain 4 can be ensured, and most of the angle ranges can be ensured to be clamped by the scissors blade 4.

The existing pruning machine needs staff to provide downward pressure for the saw chain 4 when in use, but because the trees for forestry engineering are higher, the supporting rods 2 are also increased, the distance between the saw chain 4 and the staff is long, the staff needs to consume larger force to support the pruning machine, the downward pressure for the saw chain 4 is difficult to provide.

As shown in fig. 1 and 3, the acute angle between the saw chain 4 and the straight line where the support rod 2 is located is 15 ° -25 °, a certain horizontal distance is usually kept between the saw chain 4 and the branches in the actual pruning process of a worker, so that the saw chain 4 cuts the branches at an inclined angle, on one hand, in order to avoid the branches from being crashed into the worker when falling, but the side surface of the branches of the saw is cut during pruning, so that the branches can fall only by completely sawing off the branches, the saw chain 4 and the support rod 2 are arranged at a certain angle, so that the saw chain 4 clamps the branches in a direction close to the horizontal, more downward pressure is provided for the branches, and after the branches are cut to a certain extent, the branches are crushed under the action of the pressure of the pruner.

As shown in fig. 2-3, the scissor blade 5 is provided with an auxiliary hole 6, and because the position of the handheld trimmer of a worker is far away from the cutting saw unit, the worker is difficult to provide downward pressure of the saw chain 4, so that the auxiliary hole 6 is provided, a hanging rope is adopted to penetrate through the auxiliary hole 6, and the other worker pulls the hanging rope to apply downward force, so that the downward pressure of the saw chain 4 is provided, or a plunger rod is adopted to prop the auxiliary hole 6, and thrust is applied forward in the direction of the branches by the saw chain 4, so that friction between the saw chain 4 and the branches is increased, and the efficiency of cutting the branches is improved.

As shown in fig. 2, the scissor blade 5 is L-shaped, the inner side of the bending part of the scissor blade 5 is provided with a blade, the blade at the bending part of the scissor blade 5 can prop against the branch in the tree pruning process, and the blade can be used as an axis to perform small-amplitude reciprocating rotation, so that the bark at the lower end of the branch is more conveniently cut, and compared with a horizontal reciprocating cutting mode, the rotary cutting mode is easier to apply force and has better cutting effect.

As shown in fig. 2 and 4, the tail of the scissor blade 5 is omega-shaped, an omega-shaped fixing half ring 7 matched with the tail of the scissor blade 5 is additionally arranged, the fixing half ring 7 and the tail of the scissor blade 5 form a circular fixing ring 9 under the action of a fixing bolt 8, a fixing protrusion 10 is arranged on the support rod 2, which is close to the guide plate 3, the fixing protrusion 10 is sleeved by the fixing ring 9 and is fixed by the fixing bolt 8, when the angle between the saw chain 4 and the scissor blade 5 needs to be adjusted, the fixing bolt 8 is loosened to be adjusted to a required angle, and then the fixing bolt 8 is screwed tightly, so that the operation is convenient.

As shown in fig. 2 and 4, the radius of the fixing protrusion 10 is larger than that of the fixing half ring 7, so that the fixing protrusion 10 can be clamped by the fixing ring 9, the scissor blade 5 and the supporting rod 2 are firmly fixed, the diameter of the fixing protrusion 10 is slightly larger than that of the fixing half ring 7, namely, the fixing protrusion 10 and the fixing ring 9 are tightly screwed, so that the fixing protrusion 10 can be clamped by the fixing ring 9 formed by the fixing half ring 7 and the tail part of the scissor blade 5 to the greatest extent, and the fixing ring 9 is ensured not to be separated from the fixing protrusion 10.

Claims (6)

1. The utility model provides a tree pruning machine for forestry engineering, includes power pack (1), cuts bracing piece (2) between saw unit and power pack (1), cut saw unit and saw chain (4) including baffle (3), saw chain (4) form the transmission with power pack (1) and are connected and rotate along the guide slot at baffle (3) edge, a serial communication port, cut saw unit still includes scissor blade (5), be close to baffle (3) department fixed connection on scissor blade (5) afterbody and bracing piece (2), scissor blade (5) and saw chain (4) form the scissors form, the cutting edge of scissor blade (5) is towards saw chain (4), and the contained angle between scissor blade (5) and saw chain (4) is 30 ~ 45.

2. A tree trimmer for forestry engineering according to claim 1, characterized in that the acute angle between the saw chain (4) and the straight line of the support bar (2) is 15 ° -25 °.

3. A tree trimmer for forestry engineering according to claim 1, characterized in that the scissor blades (5) are provided with auxiliary holes (6).

4. A tree trimmer for forestry engineering according to claim 1, wherein the scissor blade (5) is L-shaped, and a blade is further provided on the inner side of the curved portion of the scissor blade (5).

5. The tree trimmer for forestry engineering according to claim 1, wherein the tail of the scissor blade (5) is omega-shaped, an omega-shaped fixing semi-ring (7) matched with the tail of the scissor blade (5) is additionally arranged, the fixing semi-ring (7) and the tail of the scissor blade (5) form a circular fixing ring (9) under the action of a fixing bolt (8), a fixing protrusion (10) is arranged on the supporting rod (2) close to the guide plate (3), and the fixing ring (9) is sleeved on the fixing protrusion (10) and is fixed by means of the fixing bolt (8).

6. A tree trimmer for forestry engineering according to claim 5, characterized in that the radius of the fixing projection (10) is larger than the radius of the stationary half ring (7).

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