CN2267626Y

CN2267626Y - Multifunction electric lawn mower

Info

Publication number: CN2267626Y
Application number: CN 96242046
Authority: CN
Inventors: 常庆禄; 胡会通; 季顺卿
Original assignee: INST OF LANDSCAPE SCIENCES PINGDINGSHAN CITY
Current assignee: INST OF LANDSCAPE SCIENCES PINGDINGSHAN CITY
Priority date: 1996-10-14
Filing date: 1996-10-14
Publication date: 1997-11-19
Anticipated expiration: 2006-10-14

Abstract

The utility model discloses a mower for a lawn, particularly a multifunctional electric mower for a lawn, comprising a chassis, a front wheel, rear wheels, an electromotor, push handles, a cover for a knife housing and cutting knives; the utility model is provided with a parallel double crank type four-wheel interlocked lift adjusting device through which the utility model can be smoothly and parallelly lifted or lowered, and the surfaces of the cutting knives can be kept horizontal all along; besides, the utility model also comprises a control and protection circuit for the electromotor, a thermorelay, an AC contactor, a quick fuse and a composite press-button are arranged on the control protection circuit, and the control protection circuit can protect the electromotor not to be burnt under the condition of overload, phase lack, undervoltage or locked rotation.

Description

The multifunctional motor-driven hay mower

The utility model relates to a kind of mower, particularly a kind of multifunctional motor-driven hay mower.

By the Searches of Patent Literature; find one piece of utility model patent CN87215428U; it has announced a kind of power-operated mower; it is relatively simple for structure; by an electromotor; support; hand steered control frame; three land wheels; a cutter; engine casing (Eng Cas) and cable are formed; electromotor is contained in carriage center vertically downward; axle head is cutter fixedly; one of them land wheel is fixedly mounted on the support afterbody, and two land wheels are contained in the support both sides in addition, and its installation site can be adjusted; determine the cutter terrain clearance thus; though it is simple in structure; easy to use, but also have certain defective simultaneously, mower cutter often occurs by grass or the stuck situation of foreign material when mowing; and this power-operated mower does not have motor protective circuit; electromotor is easy to be burnt, and the mode of regulating the cutter terrain clearance in addition can not meet the demands, and its back land wheel height is constant; the land wheel of only adjusting the support both sides just cutter face can not remain level, and the lawn of cutting out can be not smooth yet.

The purpose of this utility model is exactly that a kind of lifting that can conveniently regulate mower will be provided, and can make the cutter face remain level in lifting process, the multifunctional motor-driven hay mower that can not be burnt when electromotor overload or generation stall.

The utility model adopts technical scheme as described below for achieving the above object: the multifunctional motor-driven hay mower comprises the chassis, front-wheel, trailing wheel, electromotor, pushing hands, cutter clamshell and cutter, it has parallel double crank-type four-wheel interlock elevation and subsidence regulating device, the parallel double crank structure of this elevation and subsidence regulating device is by axis, crank, follower plate, regulating handle and connecting rod are formed, the bearing fixing of axis is connected on the chassis, front-wheel and trailing wheel are connected to an end of crank separately, when plate moves regulating handle, the four-wheel of mower is conditioned simultaneously, and remain same horizontal plane, can fully guarantee smooth by the lawn of the system of cutting like this.It also has an Electric Machine Control holding circuit in addition, and this control protection electric circuit is provided with electrothermal relay, A.C. contactor, fast fast thawing continue device and compound knob, and it can be when motor overload or stall, and the protection motor is not burnt.

Its cutter is a compound tool in addition, it is made up of knife rest and blade, respectively there are three equidistant Long Circle screws the knife rest both sides, also corresponding on the handle of a knife of blade have three equidistant screws, blade connects by bolt, changes the relative position of corresponding screw, can realize that the length of cutter is shunk, to adapt to different herbaceous stems, can realize that also hilted broadsword cuts.

Adopt the multifunctional motor-driven hay mower of said structure, reasonable in design, adjusts simply accurate, safe and reliable, also can realize that luffing cuts, hilted broadsword cuts and multiple functions such as double-pole cuts.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of axis and crank.

Fig. 3 is the structural representation of knife rest.

Fig. 4 is that the A-A of knife rest is to cutaway view.

Fig. 5 is the structural representation of cutter.

Fig. 6 is that the B-B of cutter is to cutaway view.

Fig. 7 is the circuit diagram of the control protection electric circuit of single-phase motor.

Fig. 8 is the circuit diagram of the control protection electric circuit of threephase motor.

With reference to Fig. 1, Fig. 2.The multifunctional motor-driven hay mower comprises chassis 19, front-wheel 16, trailing wheel 7, electromotor 1, pushing hands 5, cutter clamshell 15 and cutter, it has parallel double crank-type four-wheel interlock elevation and subsidence regulating device, the parallel double crank structure of this elevation and subsidence regulating device is by axis 10,25, crank 9,26, follower plate 17, regulating handle 2 and connecting rod 11 are formed, axis 10,25 bearing fixing is connected on the chassis 19, below with the connection between axis 10 explanation one lower cranks and the hind axle, crank 9,9 ' fixedly connected with the two ends of axis 10, hind axle 8,8 ' respectively are fixedly connected on crank 9,9 ' an end, trailing wheel is rotatably assorted with separately hind axle respectively, one end of regulating handle 2 also is fixedly connected on the axis 10, and with crank 9 ' have a certain degree, the connection situation of axis 25 is identical with axis 10, just it does not have regulating handle, but be connected with follower plate 17 in corresponding fixed-site, be connected by connecting rod 11 between follower plate 17 and the regulating handle, the length of connecting rod 11 and axis 10,25 distance equates, between the support 13 of chassis 19 and pushing hands, be fixedly connected with adjustable plate 6, be evenly distributed with several pin-and-holes on the adjustable plate 6, a movable pin is arranged on the regulating handle 2, regulating handle can be fixed on a certain position of adjustable plate 6 by movable pin, in addition the time to adjusted, in order to overcome the gravity of mower, between the support of regulating handle and pushing hands, also has a spring 18.

With reference to Fig. 3, Fig. 4, Fig. 5, Fig. 6.The cutter of this multifunctional motor-driven hay mower is a compound tool, it is made up of knife rest 14 and blade 12, respectively there are three equidistant screws knife rest 14 both sides, also corresponding on the handle of a knife 22 of blade have three equidistant screws, be fastenedly connected by dormant bolt 23 between blade 12 and the knife rest 14, change the relative position of the screw of blade and knife rest, can realize the flexible of cutter, to adapt to different herbaceous stems, also realized different swaths simultaneously, it also can realize the hilted broadsword cutting in addition, in order to increase the blade fastness, have the groove 20 of strip in the bottom of knife rest 14, the handle of a knife of blade 12 may be stuck in this groove, uses bolted again, screw on the knife rest 14 also can be designed to the identical strip of shape, can increase the flexible amplitude of blade like this, in order to help Lysimachia sikokiana, the rear portion of the knife edge part of blade 12 have a perk along 24.

With reference to Fig. 7 the control protection electric circuit of monophase machine once is described; it comprises fast fast thawing continue device R, A.C. contactor ZC and electrothermal relay KH; fast fast thawing continues device R can outage in 5 seconds when blocking-free start; A.C. contactor is lower than rated value 85% when following at line voltage distribution; fail to start; when electrothermal relay reaches 1.5 times of rated values at overload current in 3 seconds, when reaching 6 times of rated values 6-10 in second automatically outage shut down, utilize A.C. contactor FC also can realize fast braking in addition.

The control protection electric circuit of three phase electric machine is described with reference to Fig. 8; it equally also is provided with fastp-acting fuse, A.C. contactor and electrothermal relay; utilize the three-phase multiple-speed motor also can conveniently realize speed governing, can realize pole-changing control, utilize it also can realize fast braking with A.C. contactor KM2.

The control protection electric circuit of motor all is arranged in the circuit box 3, and 4 positions that are contained in handle of compound knob are with convenient control.

Claims

1, a kind of multifunctional motor-driven hay mower, it comprises chassis (19), front-wheel (16), trailing wheel (7), electromotor (1), pushing hands (5), cutter clamshell (15) and cutter, it is characterized in that: it has parallel double crank-type four-wheel interlock elevation and subsidence regulating device, the parallel double crank structure of this elevation and subsidence regulating device is made up of axis (10), (25), crank (9), (26), follower plate (17), regulating handle (2) and connecting rod (11), the bearing fixing of axis (10), (25) is connected on the chassis (19), and front-wheel and trailing wheel are connected to an end of crank separately; Electromotor (1) has a control protection electric circuit, and this control protection electric circuit is provided with electrothermal relay, A.C. contactor, fastp-acting fuse and compound knob.

2, multifunctional motor-driven hay mower according to claim 1, it is characterized in that: its cutter is a compound tool, it is made up of knife rest (14) and blade (12), and respectively there are three equidistant screws knife rest (14) both sides, and also corresponding on the handle of a knife of blade have three equidistant screws.

3, multifunctional motor-driven hay mower according to claim 2 is characterized in that: the groove (20) of a strip is arranged at the bottom of the knife rest of compound tool (14), and the screw of compound tool (21) is a strip.

4, according to claim 1,2 or 3 described multifunctional motor-driven hay mowers, it is characterized in that: there is the edge (24) of a perk at the rear portion of the knife edge part of blade (12).