CN2893120Y

CN2893120Y - Light earth boring machine

Info

Publication number: CN2893120Y
Application number: CN 200620096725
Authority: CN
Inventors: 马勇建; 朱晶瑜; 黄恒兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-16
Filing date: 2006-05-16
Publication date: 2007-04-25
Anticipated expiration: 2016-05-16

Abstract

The utility model relates to a portable trench excavator, which comprises a gasoline engine, a retarding mechanism, a drill bit, a machine frame and armrests, characterized in that: the retarding mechanism applies the less differential pallet reducer, while the outer shell of the gasoline engine is fixedly locked with the upper shell body of the retarding mechanism and the rotary output of the gasoline engine is directly connected with the input shaft of the retarding mechanism and the output shaft of the retarding mechanism is connected with the drill bit. As the gasoline engine, retarding mechanism and drill bit are made into a whole with a high integration degree, the armrests are held by two hands to evenly carry on operation. The utility mode has a high working efficiency and a low laboring intensity, and can be applicable to pit digging for urban gardening and tree planting on mountains.

Description

Portable Earth Auger

Technical field:

The utility model belongs to round woods engineering machinery field, and is particularly a kind of by power-actuated Portable Earth Auger.

Background technology:

The excavation machinery kind is a lot, but major part is used for exploitation engineering, belongs to big machinery, is often delivered to field operation by vehicle, only is suitable for road along logical building site, and obviously it is not suitable for round woods field and plants trees and dig pit.Existing tree planting is digged pit and is also kept traditional manpower to dig pit, and not only the low labour intensity of efficient is big, and forms bigger vegetation deterioration, dig pit for the mountain region and also can cause soil erosion, and the round woods operation in city is digged pit, and it is clean and tidy to influence the appearance of the city especially.Provide trench excavator that a kind of minitype motivation drives task of the present utility model.

Summary of the invention:

The purpose of this utility model be design a kind of be the dig pit small portable formula trench excavator of drill bit operation of power drive with the gasoline engine.

Technical solutions of the utility model are achieved in that a kind of Portable Earth Auger, include gasoline engine, reducing gear, drill bit, frame and handrail, its structure is that reducing gear adopts planetary speed reducer with small tooth number difference, the upper shell of gasoline engine shell and reducing gear locks together by bolt, the rotation output of described gasoline engine is directly docked with the power shaft of reducing gear, and the output shaft of reducing gear docks with drill bit.Because gasoline engine and reducing gear and drill bit etc. all are the integrated design, the integrated level height, both hands hold handrail, can carry out operation reposefully and control.

The utility model adopts planetary speed reducer with small tooth number difference as reducing gear, make structure compactness, one degree of changing into height more, frame and handrail design are in the machine gravity position, move, Job Operations is light more flexibly, high efficiency, alleviate hand labor intensity, suitable city circle woods, mountain region plant trees and dig pit.

Description of drawings:

Below in conjunction with concrete legend the utility model is described further:

Fig. 1 Portable Earth Auger complete machine schematic diagram

Fig. 2 reducer and drill bit concern three-dimensional exploded view

Fig. 3 reducer and drill bit concern stereogram

Fig. 4 reducer and drill bit concern sectional drawing

Fig. 5 internal gear and external gear graph of a relation

Wherein

1-gasoline engine 2-reducing gear 21-upper shell 22-lower house

23-end cap 24-internal gear 25-axle less than normal 250-cam

251-guide groove 26-output shaft 260-thread segment 261-pin-and-hole

27-external gear 28-pin 29-balance weight 290-pin

30-axle sleeve 3-drill bit 31-helical blade 4-frame

41-handrail 42-control button 51-cone bearing 52-bearing

53-nut 54-bolt

The specific embodiment:

With reference to Fig. 1, Portable Earth Auger includes gasoline engine 1, reducing gear 2, drill bit 3, frame 4 and handrail 41, and wherein reducing gear 4 adopts planetary speed reducer with small tooth number difference.The upper shell of gasoline engine 1 shell and reducing gear 2 locks together by bolt, form an integral body, the rotation output of described gasoline engine 1 is directly docked with the power shaft of reducing gear 2, and the output shaft 26 of reducing gear 2 and docking of drill bit 3 directly drive drill bit work.Have screw blade 31 on the drill bit 3, satisfy reaching the upwards need of casting under the screw.

Described frame 4 is fixed on the reducing gear lower house 22, and the handrail 41 that has control button 42 is fixed on the frame 4, sets upright the need of equipment when frame 4 can satisfy people's operation.

With reference to Fig. 2, Fig. 3 and Fig. 4, the fewer differential teeth planetary decelerator device comprises upper shell 21, lower house 22 and bottom end cover 23, and locks together by bolt 54.Internal gear 24 folders are established and are fixed between the upper and lower casing 21,22, and reducing gear output shaft 26 is positioned in the lower house 22 by two cone bearings 51, and output shaft 26 has a thread segment 260, and lock two stop nuts 53, to 51 position-limiting actions of cone bearing of below.The two axial ends of axle 25 less than normal is positioned at respectively on upper shell 21 and the output shaft 26 by bearing 52, be positioned with an external gear 27 that is meshed with internal gear 24 local teeth through bearing 52 outside the cam 250 of axle 25 disjunctors less than normal, described external gear 27 and output shaft 26 adjacent faces are evenly equipped with corresponding pin-and-hole 261 respectively, the pin-and-hole that wherein is in external gear 27 1 sides is big, and the pin-and-hole of output shaft one side is little, be placed with pin 28 in the pin-and-hole 261, pin-and-hole 260 diameters on pin 28 diameters and the output shaft 26 are suitable, and the pin-and-hole 261 of output shaft 26 end faces is a blind hole, avoid pin 28 to skid off, it is just spacing by bearing 52 that pin 28 is in the end of external gear 27 1 sides, and the deceleration of external gear 27 is rotated and driven output shafts 26 by pin 28 and rotate.

The cam of axle 25 less than normal also is arranged with balance weight 29 and axle sleeve 30 respectively on the both ends of the surface about in the of 250, and offer a guide groove 251 on the cam 250, convexes with a pin 290 that can insert in the guide groove 251 on the balance weight 29, and balance weight 29 and cam 250 are rotated synchronously.Axle 25 balance weight 29 and axle sleeves 30 by cam 250 two ends less than normal hold out against between bearing, do not have movement clearance between assurance axially, effectively avoid because of axially loaded, and the bob that produces.The power shaft that the upper end of axle 25 less than normal is reducing gear directly docks with the output of gasoline engine 1.

With reference to Fig. 5, external gear 27 is under the driving of the eccentric cam 250 of axle 25 less than normal, and it can make eccentric circular motion around internal gear 24, reaches the purpose of deceleration.Utilize planetary speed reducer with small tooth number difference to have compact conformation as reducing gear, in light weight, the characteristics that moment of torsion is big are fit to as the supporting retarding device of lightweight trench excavator very much.

Claims

1, a kind of Portable Earth Auger, include gasoline engine, reducing gear, drill bit, frame and handrail, it is characterized in that reducing gear adopts planetary speed reducer with small tooth number difference, the upper shell of gasoline engine shell and reducing gear locks together by bolt, the rotation output of described gasoline engine is directly docked with the power shaft of reducing gear, and the output shaft of reducing gear docks with drill bit.

2, Portable Earth Auger according to claim 1, it is characterized in that the fewer differential teeth planetary decelerator device comprises upper shell, lower house and bottom end cover, the internal gear folder is established and is fixed on, between the lower house, speed reducer output shaft is positioned in the lower house by two cone bearings, the two axial ends of one axle less than normal is positioned at respectively on upper shell and the output shaft by bearing, the cam of axle disjunctor less than normal is outer to be positioned with an external gear that is meshed with the local teeth of internal gear through bearing, described external gear and output shaft adjacent face divide the pin-and-hole that is not evenly equipped with correspondence in addition, be placed with pin in the pin-and-hole, the deceleration of external gear is rotated by pin and is driven the output shaft rotation.

3, Portable Earth Auger according to claim 2, the pin-and-hole that it is characterized in that the output shaft end face is a blind hole.

4, Portable Earth Auger according to claim 2, the cam that it is characterized in that axle less than normal also is arranged with balance weight and axle sleeve respectively on the both ends of the surface up and down, offer a guide groove on the described cam, convex with a pin that can insert in the guide groove on the balance weight, balance weight and cam are rotated synchronously.

5, Portable Earth Auger according to claim 1 and 2 is characterized in that frame is fixed on the reducing gear lower house, and the handrail that has control button is fixed on the frame.