CN102672700A

CN102672700A - Support leg structure for movable tool

Info

Publication number: CN102672700A
Application number: CN2012101599800A
Authority: CN
Inventors: 张声誉; 周选劳
Original assignee: Xian Aircraft Industry Group Co Ltd
Current assignee: Xian Aircraft Industry Group Co Ltd
Priority date: 2012-05-22
Filing date: 2012-05-22
Publication date: 2012-09-19

Abstract

The invention discloses a support leg structure for a movable tool. The support leg structure comprises a sleeve and a support rod, wherein the sleeve is fixed on a framework of the movable tool; the support rod is connected with the sleeve in an embedding way through a spring; the sleeve is hinged with an eccentric wheel; the eccentric wheel is tangent to the upper end surface of the support rod; and the relative height of the sleeve and the support rod is adjusted through the eccentric wheel. The support leg structure can be retracted and released just through the operation of pulling a handle.

Description

A kind of stand bar structure of mobile frock

Technical field

The application relates to aircraft manufacturing frock technical field,, the supporting construction of the removable frock of application of fixed particularly.

Background technology

In Aircraft Production manufacturing, assembling and maintenance process, can use of a great variety, mobile frock such as the different transport vehicle of function, working stand, small-sized workbench.Transportation for ease; These move frock and basically all are provided with from foot wheel; Can under the traction of external force, move freely; But in the course of the work, these move frock and must keep firm and have fixing relative position with product, so we often use leg or supporting construction that ground installation is supported and fix.

Traditional leg mostly is the leading screw helical structure, and the sleeve of leading screw is connected on the shelf of working equipment, leans on the handle of turn leading screw upper end to realize feeding during use, just can equipment be supportted overhead when reaching certain stroke.The used lead screw transmission of this leg belongs to fine structure; The accuracy of manufacture, environment for use, lubricating maintenance etc. are had relatively high expectations; And handle often need change a lot of circles and just can reach predetermined stroke when using, and the conversion of free state and impaction state is wasted time and energy, so comes with some shortcomings.

Summary of the invention

The application's purpose provides a kind of stand bar structure of mobile frock, compares traditional leading screw spiral leg, and structure is more simple, and is more convenient to operate, reduced working strength of workers, improved operating efficiency.

For reaching above purpose, the application takes following technical scheme to design:

A kind of stand bar structure of mobile frock; Contain sleeve and support bar, sleeve is fixed on the framework that moves frock, it is characterized in that described support bar is inlayed with sleeve through spring to be connected; The upper end of said sleeve is hinged with the eccentric wheel of a band handle through bearing pin; The upper surface of eccentric wheel and support bar is tangent, and through the relative altitude of eccentric wheel regulating sleeve and support bar, the lower end of support bar is a base.

The stand bar structure of above-mentioned mobile frock is when off working state, and the height of leg is lower than the roller height that moves frock, when needs are fixing when moving frock; Rotate the eccentric wheel of leg through handle; Eccentric wheel compressing support bar, support bar part relatively stretches out sleeve, makes the height of the height of leg greater than roller; By leg load-bearing and the fixing frock that moves, the weight that moves frock passes to ground through frock framework → leg (sleeve → bearing pin → eccentric wheel → support bar → base); When needs remove to move frock fixedly the time, through handle backward rotation eccentric wheel, under the effect of back-moving spring; In the partially retracted relatively sleeve of support bar; Make the height of the height of supporting construction less than roller, the weight of activity frock just drops on the roller, realizes the function that moves.

The application's advantage is, and is simple in structure, easy for operation, can realize the folding and unfolding of supporting construction through pulling handle.Below in conjunction with the embodiment accompanying drawing the application is described in further detail:

Description of drawings

Fig. 1 is the nature signal of stand bar structure

Fig. 2 is the impaction state signal of stand bar structure

Numbering explanation among the figure: base 1, support bar 2, step-like structure 3, sleeve 4; Handle 5, bearing pin 6, auricle 7, spring 8, eccentric wheel 9, slight ramp 10, limited wall structure 11.

The specific embodiment

Referring to accompanying drawing, stand bar structure is to move the frock important component part, and the base 1 of the application's stand bar structure is connected by the Spherical Bottom pair with support bar 2 so that the leg base on out-of-flatness ground also can with the ground good fit; The top of support bar 2 is step-like structures 3; Back-moving spring 8 is embedded between the step-like structure 3 of bottom and support bar of sleeve 4; The upper end of sleeve is two outstanding auricles; Auricle is provided with the connecting hole of hinged eccentric wheel 9, and eccentric wheel 9 is hinged on through bearing pin 6 on the attachment lug 7 of sleeve upper end, and eccentric wheel 9 is tangent with the upper end of support bar.

In order to prevent that handle 5 from reversing under impaction state; The axial end far away of eccentric wheel 9 has a slight ramp 11; When eccentric wheel 9 was fitted with the upper surface of support bar 2, slight ramp 11 made the axle head far away and the eccentric wheel pivot eccentric shaft of eccentric wheel 9, thereby reaches self-locking.For eccentric wheel handle 5 is realized limit function, the limited wall structure 11 of protrusion is arranged in a side of sleeve 4.

When leg is in impaction state, like Fig. 2, step-like structure 3 compression springs 8, storage elasticity potential energy; When leg affranchised state, like Fig. 1, spring 8 was with support bar part jack-up.

During use, the sleeve 4 of leg is fixed on the body transom that moves frock, and the frock load-bearing is passed to ground through leg or shifting roller.The operation principle of leg is under free state, to pull handle 5, and the proximal ends of eccentric wheel 9 contacts with the upper surface of support bar 2 earlier, and after this eccentric wheel continues rotation; Eccentric wheel is pressed to ground with support bar 2 and base 1; This process medi-spring 8 is step-like structure 3 sleeves 4 compressions of supported bar gradually, and leg is in impaction state when the axle head far away plane of eccentric wheel 9 contacts with support bar 2 upper surfaces, and the height of leg is greater than the height of roller; This moment, base 1 contacted with ground, and mobile frock is fixed.Releasing to move frock fixedly the time, pull handle 5 counterclockwise, eccentric axle head far away breaks away from the upper surface of support bar 2, spring 8 is upspring support bar 2 and base 1, the leg base breaks away from ground, support foot hight is lower than the roller height, the mobile frock state that affranchises.

The application's leg adopts eccentric wheel connecting rod mechanism to satisfy the stroke requirement in the support process; Eccentric the rotatablely moving of handle changed the vertical motion of support bar in the operation; Settle at one go; And compaction process workman can use both hands and feet, and greatly reduces working strength of workers, has improved operating efficiency.Bring influence for avoiding the work-yard out-of-flatness to use to equipment, the base of leg has adopted socket arrangement, and the bulb of support bar lower end assembles in it, can rotate flexibly.For keeping the stability under the impaction state, the eccentric axle head far away of handle (away from rotary middle spindle one end) can be realized eccentric self-locking when being in extreme lower position, and the limited wall that protrudes on the sleeve has the position-limiting action to operation.This structural framing is ingenious, and is easy and simple to handle, high-effective and labour-saving, and stability and safety, the working site is neat attractive in appearance.Therefore this structure is to move a kind of innovative technology that frock supports.

Claims

1. the stand bar structure of a mobile frock; Contain sleeve and support bar, sleeve is fixed on the framework that moves frock, it is characterized in that described support bar is inlayed with sleeve through spring to be connected; The upper end of said sleeve is hinged with the eccentric wheel of a band handle through bearing pin; The upper surface of eccentric wheel and support bar is tangent, and through the relative altitude of eccentric wheel regulating sleeve and support bar, the lower end of support bar is a base.

2. the stand bar structure of mobile frock as claimed in claim 1, the upper end that it is characterized in that said sleeve is two outstanding auricles, auricle is provided with hinged eccentric connecting hole.

3. the stand bar structure of mobile frock as claimed in claim 2, a side that it is characterized in that said sleeve has the limited wall structure of protrusion.

4. the stand bar structure of mobile frock as claimed in claim 2 is characterized in that described eccentric axle head far away has a low-angle inclined plane.