Pruning machine

Abstract

The invention discloses a pruning machine, wherein a steel wire shaft (7), an upright rod (12), a switch top block (13), a main button (2), a lifting plate (8) and an inching switch (6) are arranged at the left of a motor component (5), a draw plate (10) and a sub button (4) are arranged at the right of the motor component (5), two ends of the steel wire shaft (7) are respectively connected with the right end of the main button (2) and the left end of the lifting plate (8), a rigid metal rod (9) is connected between the right end of the lifting plate (8) and the upper end of the draw plate (10), the lower ends of the draw plate (10) and the sub button (3) are hinged with a shell (11), the lifting plate (8) is sliding sheathed on the upright rod (12) sheathed by the switch top block (13), and the inching switch (6) is above the switch top block (13). The invention has the advantages that the invention can turn on and off motor with small force and can prevent thermal deformation of driving mediums caused by the heat radiation of motor.

Description

Technical field: [0001] The present invention relates to a pruning machine for pruning or trimming branches, shrubs or hedges and the like. Background technique: [0002] For safety considerations, most of the prior art pruning machines need both hands to operate simultaneously to start the machine, that is, the main and auxiliary buttons must be linked to move the micro switch in the casing to start the pruning machine. The utility model patent of the safety control mechanism of the pruning machine authorized by the applicant on June 30, 2004 has disclosed a kind of front and rear handles with steel wire flexible shafts (also known as steel cable flexible shafts). The structure of the pruning machine with transmission joint control machine, which includes a micro switch installed in the main handle to control whether the pruning machine motor works or not, a main button hinged under the main handle, and a button hinged at one end of the auxiliary handle. The auxiliary butt...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the pruning machine that uses the flexible wire shaft to realize the linkage of the main and auxiliary buttons has the following two shortcomings in practical application: 1. The flexible wire shaft is a transmission part that can be bent in any direction to bypass various obstacles , in the pruning machine, although the flexible steel wire shaft can use its own bending characteristics to go around various parts in the pruning machine to realize the linkage of the main and auxiliary buttons, however, due to the large bending resistance of the flexible steel wire shaft (especially in the case of corrosion Afterwards, its bending resistance is greater), and the force arm of the lever that is in contact with or separated from the micro switch is far away from the force of the secondary button, so that the user must use a large force to open and close the machine, which brings a lot of trouble to the operation. 2. The motor in the pruning machine will have a normal heating phenomenon during long-term work. When the temperature is too high, it will cause the wire flexible shaft transmission parts and The plastic parts connected by the flexible steel wire shaft are deformed by force and heat, which affects their normal transmission function, which eventually hinders the normal opening and closing of the pruning machine and reduces the reliability of the pruning machine.

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