CN101020447B

CN101020447B - Electric windscreen wiper for locomotive

Info

Publication number: CN101020447B
Application number: CN200710055396XA
Authority: CN
Inventors: 张生; 毕长青
Original assignee: CHANGCHUN SHENJIAN ELECTRIC POWER TOOL STOCK Co Ltd
Current assignee: CHANGCHUN SHENJIAN ELECTRIC POWER TOOL STOCK Co Ltd
Priority date: 2007-03-12
Filing date: 2007-03-12
Publication date: 2010-11-17
Anticipated expiration: 2027-03-12
Also published as: CN101020447A

Abstract

The electric windscreen wiper for locomotive for wiping out dust and rain water from the windscreen of locomotive consists of a DC motor, a reducing worm-gear mechanism, a crank-rocker transmission mechanism, a windscreen wiper assembly, and a speed regulator. The motor is one four-pole four-brush motor and has small size, great power and easy maintenance, and the reducing mechanism and the transmission mechanism have integrated worm gear and crank in one common transmission box, and the speed regulator with integrated circuit can control the oscillating speed of the windscreen wiper at will.

Description

A kind of electric windscreen wiper for locomotive

Technical field

The present invention relates to a kind of rain brush of on the vehicle, using, particularly a kind of electric windscreen wiper.

Background technology

Domestic at present, outward, the rain brush of using on locomotive mostly is pneumatic rain brush, because there are many defectives in this pneumatic rain brush, also there are many electric windscreen wiper for locomotive to come out in recent years, disclosed on February calendar year 2001 14 as Chinese patent, the applying date is on December 27th, 1999, application number is 99250801.0, and name is called the patent of invention of " electric windscreen wiper ", and the subject matter that this invention exists is: the stator of motor is made up of two block permanent magnets, for realizing the motor two stage speed change, motor adopts two utmost point three-brush, the motor fluctuation of service, and it is big to produce spark, easily burn commutator, influence motor service life; Japanese Patent disclosed JP2006-353019A on December 28th, 2006 and for example, though the stator of motor is made up of four block permanent magnets, but its commutator and carbon brush thereof are arranged in the front end cover of motor, the front end cover of motor is one with drop-gear box again and is closed in the transmission case body with transmission device, keep in repair, maintain or replace carbon brush and all must all transmission gearbox, drop-gear box and front end cover be taken apart, very inconvenient; And for example on December 31st, 1970 disclosed GB1217432A, though commutator and carbon brush nest be arranged in the back end cover for motor still inconvenient because motor is provided with outer cover, and influence the ventilation and the cooling of motor to the displacement and the maintenance of carbon brush; In addition, the carbon brush carbon dust foam that gets off that weares and teares is difficult for being eliminated, and forms local accumulation easily, causes short circuit to burn motor.

Summary of the invention

Purpose of the present invention is exactly in order to overcome oneself the deficiency and the defective of technology to be arranged, provide a kind of structure simple relatively, use, maintenance, maintenance and the displacement carbon brush is convenient, the electric windscreen wiper for locomotive of motor long service life;

The present invention is achieved by the following technical solutions: the present invention mainly is made of the DC machine that is electrically connected mutually with electrical locomotive power and worm and wormwheel speed reduction gearing, crank rocker transmission device, rain brush assembly and the speed regulation device thereof etc. that are driven by DC machine, the stator of its DC machine is made of four block permanent magnets, and the commutator of motor is arranged in the back end cover for motor of rotor rear end; Be provided with in the side of back end cover for motor four with motor shaft to perpendicular carbon brush nest, in the carbon brush nest, carbon brush is housed, carbon brush lower end and commutator touch, be provided with carbon brush lid and carbon brush nest thread connection in the upper end of carbon brush nest, centre at the carbon brush lid is provided with adjusting screw(rod), is provided with spring between adjusting screw(rod) and carbon brush; And the rear side housing of motor places outside the transmission case body;

In the front end cover of motor, the motor shaft of rotor front end is provided with built-in fans, and is respectively arranged with breather port on motor front end cover and rear side housing;

This invention is arranged in the back end cover for motor of rotor rear end owing to commutator, four carbon brush are not put in four carbon brush nests on rear side housing, the rear side housing of motor is again beyond transmission case body, therefore, can take transmission case body or outer cover apart, can change carbon brush very easily by four carbon brush lids on the carbon brush nest, commutator is keeped in repair and maintains; Owing to be provided with built-in fans on the motor shaft in front end cover, on front end cover and rear side housing, be provided with breather port, not only can cool off, and help removing the carbon dust powder that is worn motor, prolonged the service life of motor.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is an electric machine structure scheme drawing of the present invention;

Fig. 3 is Fig. 2 A-A cutaway view;

Fig. 4 is Fig. 2 B-B cutaway view;

Fig. 5 is an electric circuit diagram of the present invention;

Wherein: 1-commutator 2-rotor 3-back end cover for motor 4-carbon brush lid 5-carbon brush 6-motor casing 7-permanent magnet 8-worm gear 9-worm screw 10-drive end bearing bracket 11-fan 12-motor shaft 13-adjusting screw(rod) 14-carbon brush nest 15-spring 16-pressing plate 17-nut 18-packing ring 19-rain brush assembly clamp nut 20-output shaft 21-axle sleeve 22-connects locating piece 23-transmission case body 24-rocking bar 25-rocking bar coupling spindle 26-worm-wheel shaft 27-bearing 28-bearing bracket stand 29-crank connecting link coupling spindle 30-connecting rod 31-air vent 32-integrated circuit electrically-actuated throttle device 33-rain brush speed governing turn-knob 34-line outlet 35-rain brush assembly outward.

The specific embodiment

Below in conjunction with accompanying drawing, the present invention is further described:

Fig. 1 is a structural representation of the present invention, this invention is mainly by DC machine, and worm screw 9 worm gears 8 speed reduction gearings that drive by DC machine, the crank rocker transmission device, rain brush assembly 35 and constitute by the electrically-actuated throttle device 32 that the integrated circuit electronic devices and components constitute, worm gear 8 in the worm and wormwheel speed reduction gearing and the crank in the crank rocker transmission device merge into a single whole, worm gear 8 directly is coupling by crank connecting link coupling spindle 29 and connecting rod 30, the other end of connecting rod 30 is coupling by rocking bar coupling spindle 25 and rocking bar 24, the other end of rocking bar 24 then with output shaft 20 close-coupled, output shaft 20 is coupling with the axle sleeve 21 that is fastened on the transmission case body 23, and the fork of the outermost end of output shaft 20 and rain brush assembly 35 is by clamp nut 19 close-coupled; Output shaft 20 is done 90 ° and is come and gone and rotate along with rocking bar 24 reciprocally swingings, and the fork and the rain brush brush sheet that drive rain brush assembly 35 be 90 ° of round fan shape movings of center of circle work with output shaft 20.

As Fig. 2, Fig. 3, shown in Figure 4, motor is provided with four utmost points, four brushes, wherein, the stator of DC machine is made of four block permanent magnets 7, the commutator 1 of motor is arranged in the back end cover for motor 3 of rotor 2 rear ends, be provided with in the side of back end cover for motor 3 four with motor shaft to perpendicular carbon brush nest 14, carbon brush 5 is housed in carbon brush nest 14, carbon brush 5 lower ends and commutator 1 touch, be provided with carbon brush lid 4 and carbon brush nest 14 thread connection in the upper end of carbon brush nest 14, centre at carbon brush lid 4 is provided with adjusting screw(rod) 13, is provided with spring 15 between adjusting screw(rod) 13 and carbon brush 5, adjusts the compress degree of carbon brush to commutator 1 by adjusting screw(rod) 13.

As Fig. 2, shown in Figure 3, on the motor shaft 12 in motor front end cover 10, be provided with built-in fans 11, and on motor front end cover 10 and rear side housing 3, be respectively arranged with breather port 31, be beneficial to motor is cooled off and removes the carbon dust powder that weares and teares.

Fig. 5 is an electric circuit diagram of the present invention, the present invention adopts the 110V direct supply of locomotive own, for realizing control to the rain brush swing speed, the present invention has adopted and can carry out infinite variable speed integrated circuit electrically-actuated throttle device 32 to motor, by speed governing turn-knob 33, can regulate arbitrarily and control the swing speed of rain brush.

Claims

1. electric windscreen wiper for locomotive, it comprises: the DC machine that is electrically connected mutually with electrical locomotive power, and worm screw [9] worm gear [8] speed reduction gearing that drives by DC machine, the crank rocker transmission device, rain brush assembly and speed regulation device thereof, wherein: the stator of DC machine is made of four block permanent magnets [7], the commutator of motor [1] is arranged in the back end cover for motor [3] of rotor [2] rear end, be provided with in the side of back end cover for motor [3] four with motor shaft to perpendicular carbon brush nest [14], carbon brush [5] is housed in carbon brush nest [14], carbon brush [5] lower end and commutator [1] touch, be provided with carbon brush lid [4] and carbon brush nest [14] thread connection in the upper end of carbon brush nest [14], centre at carbon brush lid [4] is provided with adjusting screw(rod) [13], between adjusting screw(rod) [13] and carbon brush [5], be provided with spring [15], it is characterized in that: in the front end cover [10] of motor, the motor shaft [12] of rotor [2] front end is provided with built-in fans [11], and is respectively arranged with breather port [31] on motor front end cover [10] and rear side housing [3].

2. according to the said a kind of electric windscreen wiper for locomotive of claim 1, it is characterized in that: described back end cover for motor [3] places outside the transmission case body.