CN2900911Y

CN2900911Y - Telescopic driving shaft

Info

Publication number: CN2900911Y
Application number: CN 200620097604
Authority: CN
Inventors: 朱晶瑜; 黄恒兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-28
Filing date: 2006-06-28
Publication date: 2007-05-16
Anticipated expiration: 2016-06-28

Abstract

The utility model relates to a telescopic rotating axis comprising a main out tube, a compensation pipe and a rotating axis which comprising a contraction joint inner splined shaft and an out splined shaft, the inner splined shaft is provided in turn of axle sleeve and compensation pipe, the inner splined shaft is shorter than the out splined shaft, the longer area covering provided several sets of axially and mutual fixed inner splined sleeve and sliding sleeve, the sliding sleeve slide fitted with the main out tube, the adjacent sliding sleeve out splined shaft covering provides the spring, elasticity sleeves which enclasp the compensation pipe are separately fixed on the ends of the main out tube, the rotating axis has a rational structure and a better axiality, the axis can be used widely for light equipments, a power driven implement with a collapsible working arm is exploited and flexible operation is possible.

Description

Adjustable Rotating Shaft

Technical field:

The utility model belongs to mechanical field, particularly a kind of rotatingshaft with stretchability, and it can be widely used in exporting such as the power that branches of tall trees are adopted on the shearing machine.

Background technique:

It is a lot of that branches of tall trees are adopted shearing machine tool kind, but it is fixed that major part all belongs to, the beta pruning operation of superelevation gardens often all will be by vehicle to on-the-spot, only be suitable for having road along logical gardens, the safety that not only efficient is low, difficulty also can have influence on pedestrian on traffic, the road greatly, sometimes, key is a underaction, is difficult to adapt to changeable and the indefinite operating environment of height.When the forest operation of forest farm, traditional branches of tall trees are adopted the restriction that the shearing machine saw is subjected to length, in pruning operation, often do not reach desirable effect, and tracing it to its cause is that transmission of power can't be stretched and free adjustment.The existing machinery field can be used for flexible being coupling of short distance and includes female splined shaft and the male splined shaft that cooperatively interacts mostly, and its two ends are coupling with power source and load respectively, and female splined shaft and male splined shaft need by the axle bed location, can't free adjusting.

Summary of the invention:

The purpose of this utility model is the Adjustable Rotating Shaft of a kind of big stroke adjustment flexibly of design.

Technical solutions of the utility model are achieved in that a kind of Adjustable Rotating Shaft, comprise main outer tube, telescopic pipe and rotatingshaft, wherein rotatingshaft comprises flexible female splined shaft and the male splined shaft that cooperates, female splined shaft is arranged with axle sleeve and telescopic pipe outward successively, male splined shaft is than internal spline axial length, it grows and is arranged with some groups of axially dynamic and cooperatively interact inner spline housing and flip sleeves outside the part, flip sleeve becomes to be slidingly matched with main outer tube, be arranged with spring on the male splined shaft between adjacent flip sleeve, be respectively equipped with at main outer tube two ends and be fixed with elastic sleeve, elastic sleeve can be held telescopic pipe tightly.When elastic sleeve unclamps telescopic pipe is limited, compressed spring drives the whole end toward main outer tube of telescopic pipe and female splined shaft and axle sleeve and stretches out, spring is distributed on the male splined shaft of relative elongated naked section some inner spline housings and flip sleeve simultaneously, flip sleeve plays the axle bed effect, guarantees to have good coaxality between male splined shaft and main outer tube.

The utlity model has reasonable in design, coaxality is good, transmission of power is reliable, length that can long stroke telescopic variation rotatingshaft, as power transmission shaft and operating stem, can be widely used on the portable equipment, develop and have the telescopic motivational drive instrument of working arm, and control capable of expansion and contraction flexibly.

Description of drawings:

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

Fig. 1 rotatingshaft three-dimensional exploded view that stretches

The flexible end of Fig. 2 three-dimensional exploded view

Fig. 3 fixed end three-dimensional exploded view

Concern sectional drawing between Fig. 4 flip sleeve and female splined shaft and telescopic pipe

Fig. 5 elastic sleeve schematic representation

Wherein

1-master's outer tube 11-protruding rail 12-prevents sliding sleeve 2-telescopic pipe

3-female splined shaft 31-axle sleeve 32-interface 4-male splined shaft

41-inner spline housing 42-flip sleeve 420-groove 43-spring

44-bearing 5-elastic sleeve 51-star bolt 52-gap

Embodiment:

With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of Adjustable Rotating Shaft, comprise main outer tube 1, telescopic pipe 2 and rotatingshaft, rotatingshaft comprises flexible female splined shaft 3 and the male splined shaft 4 that cooperates, female splined shaft 3 outer axle sleeve 31 and the telescopic pipes 2 of being arranged with successively, axle sleeve 31 plays the bearing effect at female splined shaft 3 and 2 of telescopic pipes, axle sleeve is generally made by nylon material, its good toughness, and tool is necessarily oily, frictional force is little, matching relationship such as Fig. 2.Male splined shaft 4 is long than female splined shaft 3, it grows and is arranged with some groups of axially dynamic and cooperatively interact inner spline housing 41 and flip sleeves 42 outside the part, flip sleeve 42 is slidingly matched for 1 one-tenth with main outer tube, also can do and endwisely slip, 1 of flip sleeve 42 and main outer tube are provided with groove 420 and the protruding rail 11 that cooperatively interacts, limiting it can only do and endwisely slip, as Fig. 3, be arranged with spring 43 on the male splined shaft that adjacent flip sleeve is 42, be respectively equipped with at main outer tube 1 two ends and be fixed with elastic sleeve 5, elastic sleeve 5 can be held telescopic pipe 2 tightly.This Adjustable Rotating Shaft is fit to portable power or power tool application very much, so can be convenient to hand at the main outer tube 1 overcoat sliding sleeve 12 of setting up defences.

With reference to Fig. 2, elastic sleeve 5 can lock in the end of main outer tube 1, and telescopic pipe 2 can pass and can be held tightly, and after telescopic pipe 2 extrusions were regulated and put in place, locking star bolt 51 got final product.Telescopic pipe 2 ends and load fix, and female splined shaft 3 ends wherein are arranged with interface 32, dock with load, so that the reliable delivery rotating power.

With reference to Fig. 3, inner spline housing 41, flip sleeve 42 quantity are decided according to the flexible stroke of the cooperation of telescopic pipe 2 and main outer tube 1, and generally more than three groups, under the off working state, telescopic pipe 2 bounces back in main outer tube 1, and this moment, spring 43 was compressed; In case unclamp the elastic sleeve 5 of restriction telescopic pipe 2 ends, some springs 43 are pushed flip sleeve 42 and inner spline housing 41 open successively, formation is evenly distributed on the naked section male splined shaft 4, keeps male splined shaft 4 to be subjected to supporting uniformly and having good coaxality with main outer tube 1; Spring force also together ejects telescopic pipe 2, female splined shaft 3 and axle sleeve 31 outside the main outer tube 1, reaches the purpose of stretching rotatingshaft.The elastic sleeve 5 of this end can lock together with the power source associated member, and male splined shaft 4 can become to be in transmission connection with power source by interface.

With reference to Fig. 4, in some flip sleeves 42 of male splined shaft 4, one of two flip sleeves 42 are individual inconsistent with elastic sleeve 5 end to end, another and female splined shaft 3 and telescopic pipe 2 ends are inconsistent, and insert in the flip sleeve 42 end of telescopic pipe 2, keeps coaxial support, and transmit elasticity.42 of inner spline housing 41 and flip sleeves are provided with bearing 44, reduce by two friction.

With reference to Fig. 4, elastic sleeve 5 is the binodal linking body structure, offers gap 52 in the middle of the binodal, can make the not isometrical and asynchronous degree of tightness of two internodes, a joint is locked on the main outer tube 1, and another joint is locked on the telescopic pipe 2, and be equipped with independently lock bolt, and also be star bolt 51, be convenient to free-hand operation.

Claims

1, a kind of Adjustable Rotating Shaft, comprise main outer tube, telescopic pipe and rotatingshaft, it is characterized in that rotatingshaft comprises flexible female splined shaft and the male splined shaft that cooperates, female splined shaft is arranged with axle sleeve and telescopic pipe outward successively, male splined shaft is than internal spline axial length, it grows and is arranged with some groups of axially dynamic and cooperatively interact inner spline housing and flip sleeves outside the part, flip sleeve becomes to be slidingly matched with main outer tube, be arranged with spring on the male splined shaft between adjacent flip sleeve, be respectively equipped with at main outer tube two ends and be fixed with elastic sleeve, elastic sleeve can be held telescopic pipe tightly.

2, Adjustable Rotating Shaft according to claim 1 is characterized in that being provided with bearing between inner spline housing and flip sleeve.

3, Adjustable Rotating Shaft according to claim 1 is characterized in that elastic sleeve is the binodal linking body structure, and is equipped with independently lock bolt, and a joint is locked on the main outer tube, and another joint is locked on the telescopic pipe.

4, Adjustable Rotating Shaft according to claim 1 and 2 is characterized in that being provided with between flip sleeve and main outer tube groove and the protruding rail that cooperatively interacts.