JPH07274721A - Self-propelled trimmer - Google Patents

Abstract

PURPOSE:To provide a self-propelled trimmer for trimming a scenery-improving plant, etc., of street, highway, park, etc., and effective for improving the working efficiency and reducing the labor of the worker. CONSTITUTION:This self-propelled trimmer 1 is composed of a combination of a carrier unit 2 with a trimmer unit 3 supported in a state to enable free change of the acting position. The traveling member 20 is provided with a subsidiary traveling member 25 having a negative camber angle applied at a position shifted toward the tread direction and freely movable in vertical direction. The carrier unit 2 is provided with an auxiliary wheel 30 for setting the moving direction. A vertically movable bracket 40 is provided with a vertical slide piece 41a for inserting a trimmer post 12 and a horizontal slide piece 41b for inserting a fixed rod. Two trimmer units 3 for horizontal trimming and vertical trimming are attached in a freely rotatable state and are provided with a counter balancer 60.

Description

Detailed Description of the Invention

[0001]

[Object of the Invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trimmer for trimming a landscape planting on a street, a motorway, a park, etc., and particularly to improve its working efficiency and reduce the labor of a worker. It is related to the traveling type trimmer.

[0002]

2. Description of the Related Art Conventionally, the work for managing the branching of this kind of landscape planting is performed by an operator by operating an engine-driven portable trimmer equipped with a clipper-type cutting blade. Therefore, the worker needs a force to support the trimmer's own weight and a force to accurately swing the trimmer around the trimming surface for trimming work.
The labor for the work was extremely heavy. Of course, a trimmer may be mounted on a special work vehicle and a special car that performs such trimming work may be used. However, in such a case, when a large-scale work situation is constant, Is convenient, but if the planting scale is small or there are trees in the planting and you have to avoid them, there is not enough space for such work vehicles. In some cases, it was virtually impossible to use. Even if there is such a vehicle entry space, passage restrictions, entry restrictions, and even lane restrictions on highways, etc. are enforced on a large scale to ensure safety during work, ensuring smooth traffic. It also causes obstacles and restrictions on use in park green spaces.

[0003]

[Technical Items Attempted to Develop] The present invention has been made based on the recognition of such a background, and reduces labor required for work, improves work efficiency, and is excellent in finishing work for trimming. This is an attempt to develop a new traveling type trimmer that can reduce the usage restrictions on the surroundings during work as much as possible.

[0004]

[Constitution of the invention]

[Means for Achieving the Object] That is, the traveling type trimmer according to claim 1 is formed by combining a carriage unit and one or more trimmer units, and the carriage unit includes one or more traveling bodies and an operation handle. Further, the frame of the carriage unit is characterized in that the trimmer unit is supported so that the operating position can be changed.

In addition to the above requirements, the traveling type trimmer according to a second aspect of the invention is such that the carriage unit is provided for one traveling body.
The sub-running body is provided at a position displaced in the tread direction.

Furthermore, the traveling type trimmer according to claim 3 is
In addition to the above requirements, a negative camber angle is given to the sub running body.

Furthermore, the traveling type trimmer according to claim 4 is
In addition to the above requirements, the sub-running body is movable in the vertical direction, and the absolute posture of the running trimmer can be set vertically.

Furthermore, the traveling type trimmer according to claim 5 is:
In addition to the above requirements, the bogie unit is provided with a straight traveling auxiliary wheel for setting a traveling direction at a position deviated from a substantially center of one traveling body and a sub traveling body on a traveling line. Is.

Furthermore, the traveling type trimmer according to claim 6 is:
In addition to the above requirements, the trimmer unit is supported by an elevating bracket, and the elevating bracket comprises a vertical slide piece in which a trimmer post is fitted and a horizontal slide piece in which a rod is fitted. .

Furthermore, the traveling type trimmer according to claim 7 is:
In addition to the above requirements, the trimmer unit is rotatably attached.

Further, the traveling type trimmer according to claim 8 is:
In addition to the above requirements, the trimmer unit is for horizontal trimming,
It is characterized in that two units are provided for vertical branching.

The traveling type trimmer according to claim 9 further comprises:
In addition to the above requirements, a counter balancer is provided on the side opposite to the operating direction of the trimmer unit with respect to the trimmer post. The above objects are intended to be achieved by these inventions.

[0013]

According to the first aspect of the present invention, since the trimmer unit performs the branching work for planting while the truck unit is traveling, the operator therefore performs the operation of aligning the trimmer unit with the branching surface. After that, the work is continued simply by managing the operation of the switches of the operation system while traveling by pushing while supporting the handle.

According to the second aspect of the present invention, by changing the installation height of the auxiliary traveling body for regulation adjustment, the entire traveling type trimmer can be tilted, whereby the branching surface can be set. A preferable branching posture can always be set regardless of the inclination of the traveling position of the carriage unit.

Further, according to the invention of claim 3, since the sub-running body is provided with a negative camber angle, the sub-running body is brought into contact with both the curb and the road surface to guide the running. Accurate driving is done.

Further, according to the invention of claim 4, since the sub-traveling body is vertically movable, a preferable posture of the traveling type trimmer can be set at all times.

Further, according to the invention of claim 5, since the auxiliary wheel for setting the traveling direction is provided,
The traveling direction of the carriage unit can always be guided in a fixed direction, and the steering operation by the operator can be reduced.

Further, according to the invention as set forth in claim 6, since the lifting bracket for supporting the trimmer unit comprises the vertical slide piece in which the trimmer post is fitted, and the horizontal slide piece in which the rod is fitted, the trimmer unit. Can be easily adapted to the trimming surface of the planting.

Further, according to the invention of claim 7, since the trimmer unit is rotatably supported, the trimmer unit can face an appropriate position for planting, for example, during planting. When a tree or the like exists in the tree and the branching work is performed by avoiding the tree or the like, the tree or the like can be avoided by raising the tip end side of the trimmer unit upward. Further, the branching surface of the planting 5 can be slanted.

Further, according to the invention of claim 8, since the trimmer unit is provided with two units for horizontal and vertical trimming, it is possible to trim the top and side surfaces of the planting all at once. it can.

According to the present invention, the counter balancer is provided on the side opposite to the operating direction of the trimmer unit with respect to the trimmer post, so that the moment caused by the trimmer unit is canceled.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to illustrated embodiments. Reference numeral 1 is a traveling type trimmer in which the present invention is embodied. When roughly classified, this is a trolley unit 2 having a traveling function and a trimmer unit 3 having a direct branching action.
It is composed of and. Then, the traveling trimmer 1 branches the planting 5 into an appropriate shape by the trimmer unit 3 while traveling to the side of the planting 5. Planting 5
In many cases, for example, a curb 6 is arranged near the root of the, and the present invention enables accurate progress even by using this.

Next, the traveling trimmer 1 will be described in more detail. First, the carriage unit 2 is one in which required functional members are mounted on the frame 10.
Is made of an appropriate steel square / circular pipe, an aluminum square / circular pipe, an appropriate steel flat plate, an aluminum flat plate, or the like. The frame 10 includes a T-shaped base frame 11 which is laid on the bottom of the traveling trimmer 1 with the upper part in the traveling direction. Then, the trimmer post frame 12a is erected at two points, that is, the lower end and the upper end of the T-shape. Furthermore, near the upper end of one trimmer post frame 12a,
A balancer frame 14 is fixed in parallel with the base frame 11, and its end is projected so as to penetrate the other trimmer post frame 12a. An auxiliary wheel frame 13 is provided so as to connect the protruding portion and the T-shaped lower end of the base frame 11. Then, the inverted U-shaped trimmer post 12 is fixed to the two trimmer post frames 12a so as to be fitted therein. Note that the trimmer post 12 may be integrally formed with the base frame 11 by welding or the like, but may be a separate structure that is premised on assembly by bolting or the like in consideration of ease of assembly and the like. In addition, a counter balancer 60 having a weight 61 is provided on the balancer frame 14 on the side (road surface side) opposite to the acting direction of the trimmer unit 3 described later. This is provided to balance with the trimmer unit 3, and is arranged so as to cancel the moment of the trimmer unit 3. Specifically, the outer cylinder 63 is fixed to the balancer frame 14, and the inner cylinder 62 is fitted in the balancer frame 14 so as to project and retreat.
To provide. The weight 61 is movable along the inner cylinder 62, and the position of the weight 61 or the protruding condition of the inner cylinder 62 is adjusted to achieve balance.

Further, as shown in an enlarged view in FIG. 1 or 4, a guide post 18 is provided upright on the planting 5 side of the base frame 11 in the advancing direction, and a sub-runner bracket is fitted therein so as to be fitted therein. 16 is provided. A traveling body bracket 15 is provided on the road surface side of the base frame 11 in the traveling direction. Furthermore, an auxiliary wheel bracket 17 is provided diagonally downward from the vicinity of the center of the auxiliary wheel frame 13.

An operating handle 19 is rotatably provided at a contact point between the balancer frame 14 and the auxiliary wheel frame 13 via serrations, and a prime mover of the trimmer unit 3 is provided near a grip of the handle 19. It is equipped with 50 throttle wire operation levers.

Next, a traveling member supported by the carriage unit 2 will be described. First, reference numeral 20 denotes a traveling body, and a wheel using a tire is provided at the tip of the traveling body bracket 15 below the frame 10 as an example.
In this embodiment, the traveling body 20 uses rubber free-rotating (non-driving) tires, but crawler-shaped ones can be applied instead of tire-shaped ones.

Next, a sub-running body 25 is provided at a position deviated from the running body 20 in the tread direction in the working direction of the trimmer unit 3 (side for performing branching work). Like the traveling body 20, the auxiliary traveling body 25 also uses a rubber-made free-rotating (non-driving) tire, but a crawler-shaped one instead of a tire-shaped one can be applied. This is attached to the sub-travel bracket 16, and as shown in FIG. 4, the sub-travel bracket 16 can be slidably fixed to the vertically arranged guide post 18 in an in-fitting manner. A female screw is engraved in a portion where the auxiliary traveling body bracket 16 is fitted in the guide post 18, and is screwed with a male screw engraved in the adjustment handle 18a. The adjustment handle 18a is used to set the protruding length of the sub-traveling body bracket 16 from the guide post 18, so that the installation height of the sub-traveling body 25 can be changed.
Of course, for example, a shift actuator, a hydraulic cylinder, a spiral shaft, or other appropriate linkage mechanism may be applied so as to achieve such an object. By the way, as shown in FIG. 3, this sub-running body 25 comes into contact with a corner where the curbstone 6 and the road surface are often arranged near the root of the planting 5 to guide the running of the running trimmer 1. It is a thing. Therefore, for example, in the case of a park, a street, etc., when a slope for collecting water is provided near the curb 6 of the planting 5, the sub-running is always performed in order to set the posture of the running trimmer 1 and guide the running. Body 25 is given a negative camber angle. The term “negative” here means that the angle θ formed by the center line of the sub-traveling body 25 and the vertical line is open to the − side as shown in FIG. Further, the case where this angle θ is open to the + side is positive.

Further, auxiliary wheels 30 for setting a rectilinear action are provided at positions deviated from the substantially center of the traveling body 20 and the sub traveling body 25 on the traveling line. Similar to the traveling body 20, the auxiliary wheel 30 is also made of a rubber-made free-rotating (non-driving) tire, but a crawler-shaped tire instead of a tire-shaped tire can be applied. This is attached to the tip of the auxiliary wheel bracket 17.

Next, the trimmer unit 3 which directly takes charge of the trimming work.
The supporting member will be described. Reference numeral 40 denotes an elevating bracket, which includes a vertical slide piece 41a fitted on the trimmer post 12 and a rod 4 described later.
6 and a horizontal slide piece 41b which is fitted on the outer surface of the outer ring 6 of FIG. The elevating bracket 40 moves up and down while being fitted onto the trimmer post 12, and the fixing knob 42a
Fixed by. Further, the rod 46 is externally fitted, and this is slid and fixed by the fixing knob 42b.

The rod 46 is a member constituting a mount piece 45 on which the trimmer unit 3 is mounted, and the mount piece 45 further includes an external fitting sleeve 47 which is externally fitted to the rod 46. The trimmer unit 3 is directly supported by the mount piece 45. Specifically, the outer fitting sleeve 47 fitted on the rod 46 is fixed to a part of the trimmer unit 3 by bolting or the like, and as a result, the trimmer unit 3 is mounted on the mount piece 45. . Therefore, the trimmer unit 3 makes the horizontal state a steady state. Moreover, what is shown in FIG. 5 is what was disclosed in Claim 7, and the trimmer unit 3 can be attached rotatably. Specifically, the rod 46 is divided into a fixed rod 46a and a rotating rod 46.
b, and these are connected by the serration 46c. Therefore, the degree of rotation of the trimmer unit 3 can be set to an appropriate degree by the serrations 46c.

Next, the trimmer unit 3 mounted on the elevating bracket 40 will be further described. This has the same basic structure as a trimmer for trimming, which is already commercially available as a portable type, and has a simple mechanism. For example, a prime mover 50 using, for example, a two-cycle engine or the like.
And a blower 51 for blowing and collecting the branches and leaves in a certain direction.
Below that, a transmission unit 52 for cutting blades is further provided. An eccentric drive mechanism in which one or both so-called hair clipper type cutting blades 54 are provided in the transmission unit 52 along the cutting blade frame 53 extending from the transmission unit 52. Thus, the rotation of the prime mover 50 is driven by the power converted into reciprocating motion. A guide plate 55 is provided behind the cutting blade 54.

Of course, in addition to such members, a shatterproof plate is provided in order to prevent excessive blowout of the branched branches, and further, a bag for collecting the branches and leaves behind the guide plate 55, or for guiding in a certain direction. Alternatively, a guide member in the shape of a streamer may be attached. Further, the cutting blade 54 of the trimmer unit 3 is linear in this embodiment, but may be arcuate or the like depending on the shape of the planting to be trimmed. Also, in the basic embodiment shown in FIGS.
The trimmer unit 3 has two groups for horizontal trimming and two for trimming vertically attached to each vertical portion of the trimmer post 12. However, even if two trimmer units 3 are mounted on one trimmer post 12. Good.

The traveling type trimmer 1 according to the present invention has a specific structure as described above and operates as follows. (1) Preparation for work First, in carrying out work, the prime mover 50, which is the motive power of the trimmer unit 3 that performs the branching action, is started. In addition, the handle 1 for operation located at the upper end of the auxiliary wheel frame 13
Rotation with the connection point of 9 as a fulcrum is set to a position suitable for work.

(2) Setting according to the traveling place The setting according to the traveling place means that when the traveling trimmer 1 travels along the planting 5, for example, in the case of a park or a street,
When a slope or the like for collecting water is provided near the curbstone 6 of the planting 5, this is a work that is always performed to set a preferable attitude of the traveling trimmer 1. Specifically, since the installation surface opposite to the planting 5 is often high as shown in FIGS. 1 to 3, first, the installation height of the sub-traveling body 25 in the carriage unit 2 is set to the traveling body. It is set to be lower than 20. That is, the protruding length of the auxiliary traveling body bracket 16 from the guide post 18 is set, and as a result, the auxiliary traveling body 2 is set.
Set the installation height of 5. As a result, the traveling type trimmer 1 as a whole inclines on the flat surface so that the traveling body 20 side is lowered. However, as described above, since the traveling road surface itself is higher on the side opposite to the trimming work side as shown in FIGS. 1 to 3, under such a situation, for example, when viewed from the trimmer post 12, this is almost vertical. It is set to the state.

(3) Setting of trimmer unit In this situation, the cutting blade 54 of the trimmer unit 3 is aligned with the planting 5 to be next trimmed. In many cases of such planting 5, the upper surface is first leveled horizontally, so the position of the trimmer unit 3 is set accordingly. First, the lifting bracket 40 is set at an appropriate position on the trimmer post 12. By doing so, an appropriate branch height can be set within the limit where the lifting bracket 40 fits into the trimmer post 12. In addition, the horizontal position setting sets the position facing the planting 5 by making the rod 46 fitted in the horizontal slide piece 41b into an appropriate protruding state. Next, the position of the weight 61 on the counter balancer 60 is adjusted to balance the moment by the trimmer unit 3.

(4) Arranging work Arranging work is carried out after completion of such preparatory work or various posture setting works. In this trimming work,
First, the handle 19 is grasped and the traveling trimmer 1 is caused to travel by a so-called manual pushing operation. In this traveling, for example, when the curbstone 6 is provided, the sub-traveling body 25 travels while abutting on the abutting corner of the curbstone 6 and the road surface, and performs a certain guiding action also in this portion, thereby planting. Progress is made according to 5. Of course, when such work is performed in a straight line, the straightness of the auxiliary wheel 30 is further enhanced. Of course, when the formation state of the planting 5 is arranged in a curved shape, the auxiliary wheel 30 may be a caster wheel that can move freely, and the traveling trimmer 1 may be traveled by an appropriate handle operation.

When such running is performed, for example, the cutting blade 54 of the trimmer unit 3 arranged substantially horizontally branches the upper surface of the planting 5 almost smoothly. Further, the cutting blade 54 in the trimmer unit 3 which is arranged substantially vertically branches the side surface of the planting 5 almost smoothly. When trees 7 are mixedly planted in the planting 5 in such a state, in order to avoid this, since the traveling type trimmer 1 of the present invention is comparatively weighing, the trajectory correction of the traveling body 20 is manually performed. Can be done easily. When the rod 46 is divided into a fixed rod 46a and a rotating rod 46b as shown in FIG. 5, the cutting blade 54 in the trimmer unit 3 is sufficiently retracted to avoid this. When doing so, the trimmer unit 3 is configured to lift the cutting blade 54 upward with the serration 46c as an axis. After such avoidance is over, the original work state is returned to the horizontal state and the work is continued.

(5) Other forms of trimming Although the trimming work as described above is basically used, even if the trimmer unit 3 is provided with either one of substantially horizontal cutting and vertical cutting. Similarly, a traveling trimmer 1
When the trees are run along the planting 5 to be trimmed, those cutting blades 54 trim the upper surface or the side surface of the planting 5.

As shown in FIG. 5, when the rod 46 is divided into a fixed rod 46a and a rotating rod 46b, the cutting blade 54 in the trimmer unit 3 is attached to the tree 7.
Since it can be obliquely faced with respect to, for example, trapezoidal branching can also be performed.

Further, as shown in FIG. 6, in the case where the trimmer unit 3 is constructed so that the cutting blade 54 can be set so that the horizontal trimming and the vertical trimming can be performed with only one trimmer unit 3, for example, the After branching the upper surface of the plant 5 almost horizontally, the trimmer unit 3 is set so that the cutting blade 54 is set in the vertical direction, and then the branching operation is performed. In this case, in consideration of the fall of the branched leaves on the drive part of the prime mover 50 and the like in the trimmer unit 3, another branching mechanism is used to perform branching on the vertical plane.
It is preferable to set the branching work posture in the vertical direction so that the side becomes the road surface and the cutting blade 54 hangs downward. By the way, by setting such a trimming work posture,
The cutting blade 54 is in the opposite direction to that during the horizontal pruning work. In this state, the horizontal pruning work is performed on the outward path.
It is desirable to perform vertical branching work on the return path. Therefore, the worker grasps the handle 19 on the outward path and advances, and grasps the handle 19 on the return path and moves backward. When it is desired to avoid such a backward movement, the handle 19 may be attached to either the front or the rear of the traveling trimmer 1, or may be provided at two front and rear positions.

[0041]

The present invention has the structure as described above, and has the following effects. First, claim 1
According to the described invention, the trimmer unit 3 performs the branching work of the planting 5 while the cart unit 1 is running. Therefore, after the operator performs the operation of aligning the trimmer unit 3 with the branching surface, the handle 19 While continuing to support the vehicle, the work is continued simply by managing the operation of the levers of the operation system while driving.

According to the second aspect of the present invention, by changing the installation height of the auxiliary traveling body 25 for regulation adjustment, the traveling type trimmer 1 can be tilted in its whole posture, whereby the branching plane is set. It is possible to always set a preferable branching posture regardless of the inclination of the traveling position of the carriage unit 2.

Further, according to the third aspect of the present invention, since the sub-traveling body 25 is provided with the negative camber angle, it is in contact with both the curb 6 and the road surface to guide the traveling. , More accurate driving is performed.

Further, according to the invention of claim 4, since the sub-traveling body 25 is vertically movable, a preferable posture of the traveling type trimmer 1 can be always set.

Further, according to the invention of claim 5, since the auxiliary wheel 30 for setting the traveling direction is provided, the traveling direction of the carriage unit 2 can be always guided in a constant direction, and the work can be performed. It is possible to reduce the steering operation of the person.

Further, according to the invention as set forth in claim 6, the lift bracket 40 for supporting the trimmer unit 3 includes a vertical slide piece 41a into which the trimmer post 12 is fitted.
Horizontal slide piece 41b into which fixed rod 46a is fitted
Since the trimmer unit 3 is provided, the trimmer unit 3 can be easily fitted to the trimming surface of the planting 5.

Further, according to the invention of claim 7, since the trimmer unit 3 is rotatably supported, the trimmer unit 3 can face an appropriate position with respect to the planting 5, and, for example, When trees 7 and the like are present in the planting 5 and the branching work is performed while avoiding them, the trees 7 and the like can be avoided by raising the tip end side of the trimmer unit 3 upward. . Further, the branching surface of the planting 5 can be slanted.

Further, according to the invention of claim 8, the trimmer unit 3 is provided with two groups for horizontal and vertical branching, so that the top and side surfaces of the planting 5 can be adjusted all at once. be able to.

Further, according to the ninth aspect of the invention, since the counter balancer 60 is provided on the side opposite to the operating direction of the trimmer unit 3 with respect to the trimmer post 12, the moment by the trimmer unit 3 is canceled.

[Brief description of drawings]

FIG. 1 is a front view showing a usage state of a traveling trimmer of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a cross-sectional view showing a contact state between a curb and a road surface and an auxiliary traveling body.

FIG. 4 is a vertical sectional side view showing an example of a sliding mechanism of a sub-traveling body.

FIG. 5 is a front view showing another embodiment of the traveling type trimmer of the present invention.

FIG. 6 is a front view showing still another embodiment of the same.

[Explanation of symbols]

 1 Traveling Trimmer 2 Truck Unit 3 Trimmer Unit 5 Planting 6 Curb 7 Tree 10 Frame 11 Base Frame 12 Trimmer Post 12a Trimmer Post Frame 13 Auxiliary Wheel Frame 14 Balancer Frame 15 Traveling Body Bracket 16 Sub-traveling Body Bracket 17 Auxiliary Wheel Bracket 18 Guide Post 18a Adjustment handle 19 Handle 20 Traveling body 25 Sub-running body 30 Auxiliary wheel 40 Lifting bracket 41 Slide piece 41a Vertical slide piece 41b Horizontal slide piece 42a Fixing knob 42b Fixing knob 45 Mount piece 46 Rod 46a Fixing rod 46b Rotating rod 46c Serration 47 Outer-fitting sleeve 50 Motor 51 Blower 52 Transmission unit 53 Cutting blade frame 54 Cutting blade 55 Guide plate 60 Counter balancer 61 minutes 62 inner cylinder 63 the outer tube

Front page continuation (72) Inventor Hiroshi Kogawa 1-1-1, Wadasaki-cho, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Heavy Industries Ltd. Kobe Shipyard

Claims (9)

[Claims] 1. A trolley unit and one or more trimmer units are combined together, the trolley unit including one or more traveling bodies and an operating handle, and the frame of the trolley unit has a changed working position. A traveling trimmer that supports the trimmer unit freely. 2. The traveling type trimmer according to claim 1, wherein the carriage unit has a sub-running body at a position displaced in the tread direction with respect to one running body. 3. The negative camber angle is given to the sub-running body.
Traveling trimmer described. 4. The traveling trimmer according to claim 1, wherein the sub-traveling body is vertically displaceable and the absolute posture of the traveling trimmer can be set to be vertical. 5. The bogie unit includes straight traveling auxiliary wheels for setting a traveling direction at a position deviated from a substantially center of a traveling body and a sub traveling body on a traveling line with respect to the traveling body and the sub traveling body. The traveling trimmer according to Item 1, 2, 3 or 4. 6. The trimmer unit is supported by an elevating bracket, and the elevating bracket includes a vertical slide piece into which a trimmer post is fitted and a horizontal slide piece into which a rod is fitted. 2,
The traveling trimmer described in 3, 4, or 5. 7. The trimmer unit is rotatably attached to the trimmer unit.
The traveling trimmer described in 5 or 6. 8. The traveling type according to claim 1, wherein the trimmer unit is provided with two groups, one for horizontal branching and one for vertical branching. Trimmer. 9. A counter balancer is provided on the opposite side of the trimmer post from the working direction of the trimmer unit, as claimed in claim 1, 2, 3, 4, 5, 6, 7 or 8. Traveling trimmer.