Chain saw with tensioning device and control method
A control method and tensioning device technology, applied in the field of chain saws, can solve the problems of difficult adjustment of chain saw tension, high utilization rate of permanent magnet rotors, low utilization rate of permanent magnet rotors, etc., and achieve simple structure and high utilization efficiency , high reliability effect
Active Publication Date: 2020-06-30
杭州精锋园林工具有限公司
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Problems solved by technology
[0003] The present invention aims to solve the problem that the tension of the existing chainsaw is not easy to adjust, and the interval between the stator and the permanent magnet rotor of the main motor that drives the chainsaw is uneven, so that one side of the stator and the permanent magnet rotor is air-gap. The gap interval is relatively large, which leads to the low utilization rate of the permanent magnet rotor. Now a chain saw with a tensioning device and a control method are provided. The air gap between the rotors is evenly spaced, the utilization rate of the permanent magnet rotor is high, the difference between the rotational torque at both ends of the pole piece can be adjusted, the self-starting rotational torque can be adjusted, and the reliability is good
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[0033] The technical solutions of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.
[0034] Example, chainsaw with tensioner, see Figure 1-Figure 6As shown, it includes a chain saw 40, a frame 46, a voice prompt (51), a display screen (52), a button (53) and a controller (54), and a No. 1 sliding lifting rod 47 is provided on the frame to slide up and down, A cylinder 38 is also fixed on the frame, and the telescopic rod 37 of the cylinder is arranged vertically upward, and the cylinder base 36 of the cylinder is fixed on the lower end of the frame; on the upper surface of the telescopic rod of the cylinder, a vertical The pipe 50 is provided with a vertical rod 51 slid up and down in the vertical pipe; a pressure sensor 49 is also fixed on the upper surface of the telescopic rod of the cylinder, and the pressure sensor is surrounded by the vertical pipe; the upper end of the vertical rod is...
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The invention discloses a chain saw with a tensioning device and a control method, belonging to the technical field of chain saws and aiming at allowing the tension of the chain saw to be adjustable and causing air gaps between a stator and a permanent magnet rotor to be evenly spaced. The chain saw with the tensioning device comprises a chain saw, a rack, a voice prompter, a display screen, a keyand a controller, wherein a sliding lifting rod No. 1 is arranged on the rack in an up and down sliding manner; an air cylinder is also fixedly arranged on the rack; a vertical pipe is arranged on the upper surface of an expansion link of the air cylinder vertically and upwards; a vertical rod is arranged in the vertical pipe in an up and down sliding manner; a pressure sensor is also fixedly arranged on the upper surface of the expansion link of the air cylinder; the upper end of the vertical rod is fixedly connected to the sliding lifting rod No. 1; the upper end and lower end of a spring No. 1 are respectively connected to the lower surface of the vertical rod and the upper surface of the pressure sensor in an extrusion manner; a wheel No. 1 is arranged at the lower end of the rack; awheel No.2 is rotatably arranged on the sliding lifting rod No. 1; a main body motor connected to the wheel No. 1 in a driving manner is arranged on the rack; and the chain saw is driven to be connected to the wheel No. 1 and the wheel No. 2.
Description
technical field [0001] The present invention relates to the technical field of chain saws, in particular to a chain saw with a tensioning device and a control method. Background technique [0002] The distance between the two wheels of the existing chain saw is generally fixed, resulting in unadjustable tension of the chain saw and poor reliability. In addition, the main motor that drives the chain saw to rotate is generally a single-phase AC brushless DC motor. At present, the permanent magnet rotor and stator of the main motor are arranged with non-uniform air gap intervals, that is, the center line of the permanent magnet rotor and the center line of the stator are not on the same straight line, resulting in an air gap between the permanent magnet rotor and the stator. One side of the interval is larger and the other side is smaller. The uneven air gap spacing arrangement between the permanent magnet rotor and the stator makes the permanent magnet rotor less efficient. ...
Claims
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IPC IPC(8): B23D57/02
CPCB23D57/02
Inventor 王泉福
Owner 杭州精锋园林工具有限公司