CN201174897Y

CN201174897Y - Tree pruner

Info

Publication number: CN201174897Y
Application number: CNU2008200059984U
Authority: CN
Inventors: 谭振永
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-06
Filing date: 2008-03-06
Publication date: 2009-01-07
Anticipated expiration: 2018-03-06

Abstract

The utility model relates to a pair of tree pruners which comprise a support arm and a moving knife, wherein, a concave knife edge with a downward opening is arranged at one side of the support arm, the middle part of the moving knife is articulated on the support arm beside the concave knife edge, and the knife edge at the lower part of the moving knife is corresponding to the concave knife edge. The upper end of the support arm is articulated with the lower end of a swing arm, a long hole is arranged at the middle-lower part of the swing arm, the upper end of the moving knife is inserted into the long hole by a sliding shaft in a sliding way; the upper end of the swing arm is connected with a swing arm pulley, a tension spring is connected between the upper end of the support arm and the upper end of the swing arm, and a pole interface is arranged at the lower end of the support arm. The tree pruner has the advantages that the force can be saved by three times when a pull rope passes through two pulleys; by utilizing the combination of the swing arm and two levers of the moving knife, the larger the force is erected, the longer the power arm is and the larger the power saves; the swing arm and the moving knife are of fission structures, the seaming is not easy to occur; an arc bent saw can saw off thicker branches, and the application range can be enlarged; the pole interface can be suitably connected with long poles with different diameters and is very firm to be fastened by a bolt.

Description

Averruncator

Technical field

The utility model relates to a kind of averruncator, can be used for standing in the ground pollard, can be used for the pruning of orchard trees and various other trees.

Background technology

The swing arm and the support arm of existing averruncator are structure as a whole, in the time of firmly because the power arm of rigidity causes the edge of a knife to sting mutually to the active force of moving knife easily; The power arm of regular length and a pulley are required great effort it in use very much; Can not be used to prune thicker branch; The interface of fixed diameter is to installing the restriction strictness of stock diameter, and connects insecure.

Summary of the invention

The purpose of this utility model just provides a kind of averruncator, stings mutually with the edge of a knife that causes easily that the solution prior art exists; Require great effort very much during use; Can not be used to prune thicker branch; The interface of fixed diameter is strict and connect unstable problem to the restriction that the stock diameter is installed.

The technical solution of the utility model is: comprise support arm and moving knife, be provided with the edge of a knife on one side at support arm, the middle part of hinged moving knife on the other support arm of this edge of a knife, and make the blade of moving knife bottom corresponding with the described edge of a knife, it is characterized in that: the described edge of a knife is the downward opening spill edge of a knife; Lower end in the upper end of described support arm and a swing arm is hinged, is provided with slotted hole in the middle and lower part of swing arm, slides by a slide-bar and insert in this slotted hole in the upper end of described moving knife; Upper end in this swing arm is connected with swinging arm pulley, is connected with extension spring between on described support arm upper end and swing arm, is provided with the bar interface in the lower end of described support arm, is provided with the moving knife reference column at this support arm corresponding to the knife back place of described moving knife.

Be connected with the curved saw of arc on the top of described support arm, the direction of the bending of curved saw is provided with sawtooth back to described swing arm on the inner arc limit of this curved saw.

Described bar interface is made of the opening cylinder of C shape, on one side it is connected with described support arm, is provided with through hole between another side and the opposite side on one side, passes fastening bolt in this through hole.

Another pulley is equipped with on top at described C shape opening cylinder.

Be provided with corresponding bar fixing hole in the both sides, middle part of described C shape opening cylinder.

The curved saw of described arc is by dead axle and the top that is bolted to described support arm, and dead axle one end is fixed on a side on support arm top, at the other fixing hole that is provided with of this dead axle; Lower end at the curved saw of described arc is respectively equipped with the through hole corresponding with this dead axle and fixing hole, passes described dead axle and bolt in it respectively, is screwed on this bolt with the shank type nut.

The utility model has the advantages that: (1) passes two pulleys with stay cord, is equivalent to being used in combination of two movable pulleys, can be laborsaving three times, can easily cut off thicker branch; (2) utilize the combination of swing arm and two levers of moving knife, firmly big more power arm is long more, laborsaving big more; (3) swing arm and moving knife are not easy mutual seaming for dividing body structure when firmly shearing; (4) the curved saw of arc can not sandwich the interior thicker branch of the edge of a knife by sawed-off those, has enlarged the scope of application; (5) the bar interface goes for being connected with the stock of different-diameter, and is very firm with bolted, and the fixed interface that has overcome prior art is to the strictness restriction of stock diameter and be connected unstable shortcoming.

Description of drawings

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

Fig. 2 is the rearview of Fig. 1;

Fig. 3 is the A-A cutaway view of Fig. 1;

Fig. 4 is the B-B cutaway view of Fig. 1;

Fig. 5 is the schematic diagram that the utility model shown in Figure 1 (is cut off branch) in use.

Embodiment

Referring to Fig. 1～Fig. 5, the utility model comprises support arm 10, swing arm 1 and moving knife 3, be provided with the downward opening spill edge of a knife 2 on one side at support arm 10, on the other support arm 10 of this spill edge of a knife, by the middle part of pivot 14 hinged moving knife 3, and make the blade 31 of bottom of moving knife 3 corresponding with the described spill edge of a knife.Upper end at described support arm 10 is hinged with the lower end of swing arm 1 by pivot 15, is provided with slotted hole 21 (referring to Fig. 2 and Fig. 5) in the middle and lower part of swing arm 1, slides by a slide-bar 13 and insert in this slotted hole 21 in the upper end of described moving knife 3.Be connected with swinging arm pulley 6 in the upper end of this swing arm 1, between the upper end of the upper end of described support arm 10 and swing arm 1, be connected with extension spring 7, be provided with bar interface 4 in the lower end of described support arm 10, be provided with moving knife reference column 16 at this support arm 10 corresponding to the knife back place of described moving knife 3, for moving knife 3 in the location, two positions (as Fig. 1 and shown in Figure 5) of cutting off before and after the branch.

Also can connect the curved saw 8 of arc on the top of described support arm 10, the direction of the bending of curved saw is provided with sawtooth 9 back to described swing arm 10 on the inner arc limit of this curved saw 8.Curved saw 8 can be fixedlyed connected with support arm 10, also can be designed to structure for convenience detach.

Described embodiment of structure for convenience detach is: the curved saw 8 of arc is fixed on the top of described support arm 10 by dead axle 17 and bolt 12, and dead axle 17 1 ends are fixed on a side on support arm 10 tops, at the other fixing hole that is provided with of this dead axle.Lower end at the curved saw 8 of described arc is respectively equipped with the through hole corresponding with this dead axle and fixing hole, passes described dead axle 17 and bolt 12 in it respectively, is screwed on this bolt 12 with shank type nut 24.

Described bar interface 4 is made of the opening cylinder of C shape, it is connected (as shown in Figure 3) while passing through bolt 20 with described support arm 10, be provided with through hole between the another side of the opening cylinder of C shape and the opposite side, in this through hole, pass fastening bolt 19 (as shown in Figure 3), the stock 23 that penetrates in the bar interface 4 is fastening.

On the top of described C shape opening cylinder another pulley 5 is housed, the support of this pulley 5 is that the both sides with the opening cylinder of C shape cut out C shape otch, then outwardly-bent moulding.

Be provided with corresponding bar fixing hole 18 in the both sides, middle part of described C shape opening cylinder, be used to pass stock 23, prevent that stock 23 from coming off.

Referring to Fig. 5, the utility model is in use in the top insertion rod interface 4 with a stock 23, and fastening with fastening bolt 19, passes bar fixing hole 18 and stock 23 with bolt 25.One end of stay cord 22 is fixed on the lower end of swinging arm pulley 6 supports, and the other end is successively walked around pulley 5 and swinging arm pulley 6 backs downwards, and two

pulleys

5 and 6 are formed running blocks, and the pulling force that acts on swing arm 1 right-hand member is firmly three times.Hold by the user with handle in the connection of the lower end of stay cord 22 during use, the spill edge of a knife 2 is clipped on the branch that needs to prune, drop-down stay cord 22, swing arm 1 drives moving knife 3 deflections, and moving knife blade 31 closes up with the spill edge of a knife 2 blades cuts off branch.Can directly cut off thicker branch with curved saw 8.

In addition, because connection pivot 15 between swing arm 1 and moving knife 3 and the

support arm

10 and 14 position different (referring to Fig. 1 and Fig. 2), in use, when with stay cord 22 pulling swing arms 1 deflection (referring to Fig. 5), the slide-bar 13 of moving knife 3 is moved to the left downwards in the slotted hole 21 of swing arm 1, and along with the increase of swing arm 1 deflection angle, the distance that slide-bar 13 moves in slotted hole 21 is just big more, be equivalent to the increase of power arm, just laborsaving more.

Claims

1, a kind of averruncator, comprise support arm and moving knife, on one side be provided with the edge of a knife at support arm, the middle part of hinged moving knife on the other support arm of this edge of a knife, and make the blade of moving knife bottom corresponding with the described edge of a knife, it is characterized in that: the described edge of a knife is the downward opening spill edge of a knife; Lower end in the upper end of described support arm and a swing arm is hinged, is provided with slotted hole in the middle and lower part of swing arm, slides by a slide-bar and insert in this slotted hole in the upper end of described moving knife; Upper end in this swing arm is connected with swinging arm pulley, is connected with extension spring between on described support arm upper end and swing arm, is provided with the bar interface in the lower end of described support arm, is provided with the moving knife reference column at this support arm corresponding to the knife back place of described moving knife.

2, averruncator according to claim 1 is characterized in that: be connected with the curved saw of arc on the top of described support arm, the direction of the bending of curved saw is provided with sawtooth back to described swing arm on the inner arc limit of this curved saw.

3, averruncator according to claim 1 is characterized in that: described bar interface is made of the opening cylinder of C shape, on one side it is connected with described support arm, is provided with through hole between another side and the opposite side on one side, passes fastening bolt in this through hole.

4, averruncator according to claim 3 is characterized in that: pulley is equipped with on the top at described C shape opening cylinder.

5, according to claim 3 or 4 described averruncators, it is characterized in that: be provided with corresponding bar fixing hole in the both sides, middle part of described C shape opening cylinder.

6, averruncator according to claim 1 is characterized in that: the curved saw of described arc is by dead axle and the top that is bolted to described support arm, and dead axle one end is fixed on a side on support arm top, at the other fixing hole that is provided with of this dead axle; Lower end at the curved saw of described arc is respectively equipped with the through hole corresponding with this dead axle and fixing hole, passes described dead axle and bolt in it respectively, is screwed on this bolt with the shank type nut.