CN2415595Y - Lopping device - Google Patents

Abstract

The utility model discloses a branch cutting machine with an extended handle for flowers or fruit trees. The utility model is provided with an upper blade in the shape of a bended pawl, and a lower blade of a transverse and oblique cutting edge, and the shear fronts of the upper blade and the lower blade are attached together and are respectively arranged in a guiding hole of a cutter body and an installation plane. The upper blade is connected with an operational end by a connecting draw rod in a cutter bar pipe chamber, the operational end causes the upper blade to axially make a displacement under the effect of the connecting draw rod, and tree branches can be cut by the effect of the upper blade and the lower blade. The utility model has the advantages of small volume for cutting end and convenient operation. In addition, the cutter bar can change the length according to the requirement, and thereby, the work space is large. The utility model is suitable for cutting tree branches at a high position or in the distance, and is suitable for cutting the tree branches at a position with dense trees.

Description

Hand-bill

The utility model relates to the secateur of flowers or fruit tree, especially a kind of hand-bill with elongated handle.

As everyone knows, traditional hand-bill all adopts scissor structure, it comprises: between the operating side that the shearing end of being made up of the shear-blade of a first quarter moon shape and a crescent shape, the lever that is connected with shear-blade are respectively formed, the bearing pin that flexibly connects two shear-blade necks, two levers return spring that operating grip is opened is housed, the hand-bill of this structure relies on the grip of operator's hand to overcome the expansionary force of return spring, make between two shear-blades and produce shearing force, thereby cut off the branch of trees.Owing to influenced by human upper limb limited length and the dense degree of trees branch, adopt the hand-bill of this structure to prune to eminence or branch at a distance and the branch at the dense place of trees.

The purpose of this utility model is to overcome the deficiencies in the prior art, and the hand-bill that a kind of shearing end volume is little, easy to use, working space is big is provided.

For achieving the above object, the utility model comprises two shear-blades, make the return spring of two shear-blades expansion, described two shear-blades are respectively curved claw-like cutter and have horizontal shear blade, the bottom knife of oblique shear blade, cutter hub is provided with pilot hole, on the side of an end of cutter hub, be provided with mounting plane, this plane overlaps with the symmetrical plane of pilot hole, bottom knife is installed on the mounting plane, cutter is set in the pilot hole, and on, the shear plane of bottom knife fits, described return spring is set on the link of the cutter in the pilot hole, the shaft shoulder by cutter is pressed against the pilot hole bottom, the other end of cutter hub is installed on the adjustable knife bar of length, being positioned at the intraluminal connecting rod of knife bar is connected the link of cutter with the mobile link of operating side, be provided with roller between the mobile terminal of mobile link and knife bar tube wall, the link of mobile link is movably connected on the swing handle, and the swing handle stiff end is movably installed on the knife bar.

The utility model is owing to be provided with the cutter of curved claw-like and the bottom knife of horizontal, oblique shear blade, the upper and lower blade that shear surface fits is loaded on respectively on the pilot hole and mounting plane of cutter hub, cutter is connected with the operating side by being positioned at the intraluminal connecting rod of knife bar, the operating operation end makes cutter displacement vertically and bottom knife effect by the effect of connecting rod and shears the branch of trees, has shearing end volume advantage little, easy to use, in addition, knife bar can change length as required, so working space is big.

Below in conjunction with the drawings and specific embodiments the utility model is described in further details.

Accompanying drawing is a main cutaway view of the present utility model;

As shown in drawings, the upper end cross section of curved claw-like cutter 1 is semicircle, the lower end is provided with the shaft shoulder, the drift angle of curved claw-like cutter 1 is directed to axis and divides equally, the center of cutter hub 2 has axially directed hole 3, on the side of an end of cutter hub 2, be shaped on mounting plane 4, this plane 4 overlaps with the symmetrical plane of pilot hole 3, the bottom knife 5 that has horizontal shear blade and oblique shear blade is screwed on mounting plane 4, cutter 1 is set in the pilot hole 3, and the cutter 1 and the shear plane of bottom knife 5 are fitted, be provided with transition arc between the horizontal shear blade of bottom knife 5 and the oblique shear blade, this transition arc is cutter 1 curved right side, pawl summit slightly relatively, to prevent " stinging sword " phenomenon.Return spring 6 is set on the link of the cutter 1 in the pilot hole 3, be pressed against the bottom of cutter hub pilot hole 3 by the shaft shoulder of cutter 1 lower end, the other end of cutter hub 2 is locked on the adjustable knife bar 7 of length with screw, being positioned at knife bar 7 intraluminal connection lacing wires 8 is connected the link of cutter 1 with the mobile link 9 of operating side, between the mobile terminal of mobile link 9 and knife bar 7 tube walls, be provided with roller 10, roller 10 rolls on the inwall spigot surface of knife bar 7 to reduce resistance during work, the gathering sill 11 usefulness pins that the link of mobile link 9 passes knife bar 7 are movably connected on swing handle 12 middle parts, and swing handle 12 stiff ends are movably articulated on the support that is connected with knife bar 7.

During use, clamp knife bar 7 with the tiger of hand, all the other fingers hook swing handle 12 and are in relaxation state, and under the effect of return spring 6, cutter 1 opens naturally with bottom knife 5.During work, elder generation stretches to the pruning position of branch to cutter 1 and it is hooked, the swing handle 12 of firmly holding with a firm grip then, by mobile link 9 roller 10 is subjected to displacement along the inwall of knife bar 7, move down through connecting lacing wire 8 drive cutters 1, because the distance between cutter 1 and the bottom knife 5 is constantly dwindled, thereby produce shearing force, branch is cut off.Unclamp swing handle 12, cutter 1 automatically resets under the effect of return spring 6, and the beta pruning process finishes.

Claims (1)

1, a kind of hand-bill, by two shear-blades, make the compositions such as return spring of two shear-blades expansion, it is characterized in that: described two shear-blades are respectively curved claw-like cutter and have horizontal shear blade, the bottom knife of oblique shear blade, cutter hub is provided with pilot hole, on an end side surface of cutter hub, be provided with mounting plane, this plane overlaps with the symmetrical plane of pilot hole, bottom knife is installed on the mounting plane, cutter is set in the pilot hole, on, the shear plane of bottom knife fits, described return spring is set on the link of the cutter in the pilot hole, the shaft shoulder by cutter is pressed against the pilot hole bottom, the other end of cutter hub is installed on the adjustable knife bar of length, being positioned at the intraluminal connecting rod of knife bar is connected the link of cutter with the mobile link of operating side, be provided with roller between the mobile terminal of mobile link and knife bar tube wall, the link of mobile link is movably connected on the swing handle, and the swing handle stiff end is movably installed on the knife bar.