CN2834938Y

CN2834938Y - A blackboard eraser capable of collecting chalk dust automatically

Info

Publication number: CN2834938Y
Application number: CN 200520122635
Authority: CN
Inventors: 张建华
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-23
Filing date: 2005-09-23
Publication date: 2006-11-08
Anticipated expiration: 2015-09-23

Abstract

The utility model discloses a blackboard eraser capable of automatically removing chalk dust, which belongs to the field of blackboard erasers. The utility model is composed of a mainframe and a track, wherein the mainframe comprises a mainframe cover, a frame, an electromotor assembly, a dust suction assembly, a sliding carbon brush assembly, a driven shaft sleeve, a pushed variable speed chainwheel, a travelling wheel, hair brushes and a dust suction box. The mainframe cover covers the mainframe and the rotation directions of two contiguous hair brushes are opposite. The electromotor assembly is connected with the gears on the driven shaft sleeve and the pushed variable speed chainwheel through chains. The hair brushes are under the frame and are fixed at the lower end of a telescopic shaft. The lower chamber of the frame is sealed. The mainframe is hung on the track by the travelling wheel. The utility model has the advantages of simple structure and convenient use. The hair brushes rotate to clean a blackboard and form a closed space with the frame. The utility model effectively absorbs dust and protects the environment. Under the push of the pushed variable speed chainwheel, the travelling wheel on the mainframe goes forward smoothly. The telescopic shaft can be adjusted to adjust the distance of the hair brushes and the blackboard for obtaining the purpose of adjusting the frictional force of the hair brushes and the blackboard.

Description

A kind of automatic dust-removing blackboard eraser device

Technical field

The utility model discloses a kind of automatic dust-removing blackboard eraser device, belong to the blackboard eraser field.

Background technology

At present, teaching is hand-held blackboard eraser with the direct method of blackboard eraser, wiping repeatedly on blackboard, and this wiping is not only time-consuming but also require great effort, and can cause breathing problem, causes environmental pollution again.Now, the automatic blackboard eraser that has can solve wastes time and energy, problem of environment pollution caused, but complex structure.

Technology contents

The purpose of this utility model is to disclose a kind of automatic dust-removing blackboard eraser device simple in structure, easy to use.

The utility model such as following technical scheme realize:

A kind of automatic dust-removing blackboard eraser device, form by main frame and track, main frame comprises cover, framework, motor assembly, the dust suction assembly, slide brush, driven axle sleeve, advance speed-changing chain, travel wheel, hairbrush and dust-absorbing box, cover covers main frame, the direction of rotation of adjacent two hairbrush, motor assembly, the dust suction assembly, driven axle sleeve passes through bearing, advance speed-changing chain to pass through bearing, travel wheel is fixed on above the framework by axle, motor assembly is by chain and driven axle sleeve, advance the gear on the speed-changing chain to connect, hairbrush is below framework, the cavity of resorption of framework is sealed, hairbrush is fixed on the driven shaft by telescopic shaft, two tracks are separately fixed at the place, both sides up and down of blackboard, tooth on the track matches with advancing the tooth on the speed-changing chain, main frame hangs on the track by travel wheel, dust-absorbing box slides the upper end that brush is fixed on framework in the lower end of framework, and the dust suction filter bag is installed on the dust suction assembly.

Above-mentioned a kind of automatic dust-removing blackboard eraser device, described driven axle sleeve is fixed on the framework by two bearings, a housing pin cover is twisted in the upper end of driven axle sleeve, adorn a spring below the housing pin cover, spring is held up by the rib of projection on the telescopic shaft, there is a groove lower end of telescopic shaft, to put the hole corresponding with driven shaft, pin is entered the groove of telescopic shaft by the hole, telescopic shaft and driven axle sleeve is equipped, and telescopic shaft can slide up and down in driven axle sleeve, can adjust telescopic shaft by regulating the housing pin cover, thereby regulate the distance of hairbrush and blackboard, reach the friction of adjusting hairbrush and blackboard.

A kind of automatic dust-removing blackboard eraser device of the above has a scrobicular ring on the wheel of described travel wheel, its degree of depth is slightly larger than the height of track, and its width is slightly larger than the thickness of track.

Above-mentioned a kind of automatic dust-removing blackboard eraser device, the described brush that slides is made up of insulating bar, carbon brush, holddown spring and electric wire guide rail, the be fixed in the above top of track of electric wire guide rail, the insulating bar secured in parallel is in the framework upper end, and the following fixedly carbon brush of the other end has a pad above, the power line of welding motor assembly, dust suction assembly, holddown spring one end is fixed on the framework, and an end is fixed on the insulating bar, and the electric wire in carbon brush and the electric wire guide rail fully contacts.

Above-mentioned a kind of automatic dust-removing blackboard eraser device, described hairbrush is at least one.

Adopt the automatic dust-removing blackboard eraser device of said structure; simple in structure, easy to use; hairbrush rotation blackboard wiping, hairbrush and framework form an enclosure space, absorb dust effectively; protected environment; travel wheel on the main frame is steadily advanced under the effect that promotes wheel, regulates telescopic shaft; can adjust the distance of hairbrush and blackboard, reach the friction of adjusting hairbrush and blackboard.

Description of drawings

Fig. 1 is the drive mechanism schematic diagram of motor assembly of the present utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the brush structural representation that slides of the present utility model.

Fig. 4 is the local structure for amplifying schematic diagram of travel wheel of the present utility model and track.

The specific embodiment

With reference to Fig. 1,2,3,4, during machine operation, driving wheel 12 on the motor assembly rotates, rotate by chain driven

wheel

13,17, propelling speed-changing chain 14, propelling wheel 11, advance speed-changing chain 14 to drive and advance wheel 16 to rotate to advance, be fixed on

axle

21,22,23,24 on the framework 1 and travel wheel is installed respectively also advances along track along the tooth on the track 42 by chain 15; Wheel 13 is installed in the outside of driven axle sleeve 6, driven axle sleeve 6 is by bearing 51,52 are fixed on the framework 1, housing pin cover 7 is twisted in the upper end of driven axle sleeve 6, adorn a spring 3 below the housing pin cover 7, spring 3 is held up by the rib of projection on the telescopic shaft 8, there is a groove lower end of telescopic shaft 8, corresponding with hole on the driven axle sleeve 6, pin 4 is entered the groove of telescopic shaft 8 by the hole, telescopic shaft 8 and driven axle sleeve 6 are fixed, and hairbrush 2 is fixed on the lower end of telescopic shaft 8, and a scrobicular ring is arranged on the wheel of travel wheel 43, its degree of depth is slightly larger than the height of track 41, and its width is slightly worked energetically the thickness of track 41.Slide insulating bar 32 secured in parallel on the brush in the upper end of framework 1, the following fixedly carbon brush 10 of the other end, one pad 31 is arranged above, the power line of welding motor assembly, dust suction assembly, holddown spring 9 one ends are fixed on the framework 1, one end is fixed on the insulating bar 32, and the electric wire in carbon brush 10 and the electric wire guide rail fully contacts.

Claims

1, a kind of automatic dust-removing blackboard eraser device, form by main frame and track, main frame comprises cover, framework, motor assembly, the dust suction assembly, slide brush, driven axle sleeve, advance speed-changing chain, travel wheel, hairbrush and dust-absorbing box, cover covers main frame, the direction of rotation of adjacent two hairbrush, it is characterized in that: motor assembly, the dust suction assembly, driven axle sleeve passes through bearing, advance speed-changing chain to pass through bearing, travel wheel is fixed on above the framework by axle, motor assembly is by chain and driven axle sleeve, advance the gear on the speed-changing chain to connect, hairbrush is below framework, the cavity of resorption of framework is sealed, hairbrush is fixed on the driven shaft by telescopic shaft, two tracks are separately fixed at the place, both sides up and down of blackboard, tooth on the track matches with advancing the tooth on the speed-changing chain, main frame hangs on the track by travel wheel, dust-absorbing box slides the upper end that brush is fixed on framework in the lower end of framework, is equipped with the dust suction filter bag on the dust suction assembly.

2, a kind of automatic dust-removing blackboard eraser device according to claim 1, it is characterized in that: driven axle sleeve is fixed on the framework by two bearings, a housing pin cover is twisted in the upper end of driven axle sleeve, adorn a spring below the housing pin cover, spring is held up by the rib of projection on the telescopic shaft, and there is a groove lower end of telescopic shaft, corresponding with the hole that driven shaft puts, pin enters the groove of automatic telescopic shaft by the hole, and telescopic shaft and driven axle sleeve is equipped, and telescopic shaft can slide up and down in driven axle sleeve.

3, a kind of automatic dust-removing blackboard eraser device according to claim 1, it is characterized in that: a scrobicular ring is arranged on the wheel of travel wheel, and its degree of depth is slightly larger than the height of track, and its width is slightly larger than the thickness of track.

4, a kind of automatic dust-removing blackboard eraser device according to claim 1, it is characterized in that: slide brush and form by insulating bar, carbon brush, holddown spring and electric wire guide rail, the be fixed in the above top of track of electric wire guide rail, the insulating bar secured in parallel is in the framework upper end, the following fixedly carbon brush of the other end, one pad is arranged above, the power line of welding motor assembly, dust suction assembly, holddown spring one end is fixed on the framework, one end is fixed on the insulating bar, and the electric wire in carbon brush and the electric wire guide rail fully contacts.

5, a kind of automatic dust-removing blackboard eraser device according to claim 1, it is characterized in that: hairbrush is at least one.