DE1912304U - WIPER OR SEAL RING. - Google Patents

Description

The invention "relates to gasket rings that hereinafter referred to as scraper rings and mainly intended to be used by the reciprocating Removing soil adhering to the stamp shafts of hydraulic machines for earthworks »

Wiper rings, which are currently in connection with the floating punch shafts of machines for Earthworks used are mostly L-shaped Cross-section and have an axially extending inner wiper lip and a see radially extending flange ».

Dar-type scraper rings are in a correspondingly shaped annular recess in one at the outer end of the receiving the punch shaft Hydraulic cylinder provided bearing body used and against being pushed out by the punch shaft

liijSii ¹ ·; - ■ -

: 'on its outward stroke with the help of a retaining plate or

ί secured by a similar locking device that

covers the outer end of the recess formed in the bearing body.

^: The purpose of the invention is to

to create a slip ring with a purpose built in

; trained bearing body automatically engages, '

; ■ when it is pressed into this, and thus against

Pressing out is kept.

'■ The invention consists of a scraper ring, in particular

: '■. special for a floating shaft,

with an inner and an outer flexible splash, ■ which both extend in a generally axial direction from the body

" ^{! i !;} per of the ring extend, and of which the inner flange

: at an angle inwards towards the axis of the ring

■■ "■ ii ¹ '

tends and engages with the shank to be stripped can step and the outer flange is inclined outwards and can be pushed radially inwards

This wiper ring is characterized in that it is made of a relatively non-resilient material, e.g. a polyamide, molded in one piece and reduced in size by a formed in a suitable bearing body annular input bore can be introduced through into an enlarged recess of the bearing body, in • which it expands automatically, and that the outer .S splash after inserting the ring into the recess of the

llite.,

bearing body locking behind a stop within of the bearing body engages.

A suitable for a scraper according to the invention the bearing body may include an annular input "bore through which the body of the ring can be passed and which is connected to an inner bore of larger diameter by an abrupt step .. _s is an annular edge or Stop forms where-

.,:, in which the inlet bore has a diameter which

.. · .., ■■;.: .. the passage of the scraper ring through radial inward

I ι, - ■ .. ■ press its outer flange allowed while the

ί, - inner bore has a diameter which allows

that the outer bottle of the imported Abmtre if ring. V can expand so that it comes into sealing engagement with the, κ inner bore and with its outer lip under.,., J ₁₁ . engages the annular rim or stop. ¹ ; -, The mouth of the inlet bore of such a bearing body is preferably funnel-shaped, so that when the scraper ring is pushed through the smaller bore, its outer flange is gradually and evenly pressed radially inward.

■ ■■■ An embodiment of a wiper ring according to the ^:: '■' invention is shown in the drawing, for example, to illustrate

■; ^{| s} lung.

■; . ^ ig. 1i is a sectional view showing a wiper

ß ^ r : ■; ' ring according to the invention in cross section as-

that gives.,. which is located within the bore of the bearing body, with its outer Splash under the ring-shaped edge or stop and grab your inner splash yourself in sealing engagement with a reciprocating shaft or a rotating one Shaft is located.

ig. Fig. 2 is a partial sectional view showing the cross section of the wiper ring according to Pig. \ in its normal or unloaded state before insertion into the bearing body -

ν 'light.

"■ '* Pig. 3 is a sectional view similar to Pig. I

'"'%. ■■ of the bearing body without the wiper ring.

ι »" ι ¹ · ^; iii ||, J! | ii | jr '_

" ^! " The wiper ring shown in Pig. 2 as an example

:, "Can be formed from a polyamide (" nylon ⁶⁸ ) or another two-way ,; ^: ■■■■■ '"corresponding plastic as a closed ring, which has the cross-section shown and a

::: ■! Body a, with a flat base b, an inner one

^{ιί:: !} Plansch c, which is at a relatively small angle

■ = «" is inclined inwards from the vertical, and a short ■■ zeren outer plansch d, which at a substantially larger angle than the inner plansch c against the

^{: i} : ', vertical nacia is inclined outside.

Γ / * 'Plansche c and d both have an axially after

;. ;; ; Ji ₁ ,, ■ thickness decreasing on the outside so that they are pliable, and end

in relatively thin lips which have narrow, flat surfaces ^e and f, respectively. However, it can also be the case that one of the two flanges c and d or both have a uniform cross-section.

In the illustrated embodiment, the inner flange c is considerably longer than the outer flange _r d so that its flexibility and hence its ability to maintain tight contact with the shaft when the wiper ring is removed is increased inner?; ■ half of the bearing body is in its working position}

""' ^Λ "I, however, such a design is not essential for the invention.

The length of the outer flange d is a-ieht greater than the depth of the bearing body recess, so that when the flat base b of the Hinges on the bottom of the bearing body recess is placed, the flat upper surface f of the flange d under an annular edge or stop can grip within the bearing body shown in FIG. 1 and to be described below.

The bearing body shown as an example in FIG. 3 has an inlet bore g and an inner recess h provided that have a larger diameter than that

. ■.! Iil'iiii -...: ■■■■■ ;; "■■: ■! ■

s- inlet bore g has. The bore g and the recess h . ■; are connected to each other by an abrupt step, the

;: a continuous annular rim or stop education _i.:. det, with which the flat upper surface f of the lip of the

outer flange d of the Alas tr e! fring into engagement can.

When the scraper ring in the inner recess h of the bearing body has been pushed in, the inner surface lies of the inner flange c on the surface of the shaft j and extends up into the input bore g.

So that the lip of the outer flange d is gradually and evenly pushed radially inward to allow the wiper ring to pass through the input bore g can be pushed through, the bore g has an inwardly tapering or funnel-shaped Entry mouth k provided.

In the case of a wiper ring and a bearing body, as described above, the flange d acts as both Sealing member as well as a locking member that automatically engages with the stop i when the scraper ring is in the bearing body is pressed in, and as a result of this engagement, the scraper ring becomes secure in the bearing body so that, for example, in the case of a reciprocating "moving Shank of the punch of a machine for earthworks from the shank on its outward stroke from the Bearing body cannot be pulled out.

Claims (2)

i '" ^{ili !! V} claims for protection ! ■ ·.) Wiper ring, especially for a reciprocating shaft, with an inner and an outer pliable paddles both of which extend in a generally axial direction from and from the body of the ring which the inner flange opposes at an angle inward ^{1 l:} -: '' ■ the axis of the ring is inclined and with which to strip - :: 'ϊ the shank can engage and the outer flange :; ■■; ^l! r is inclined outwards and can be pushed radially inwards, so that *! CU \: - M-: ■ . ■ characterized in that the ring / is formed from a relatively non-resilient material, e.g. a polyamide, in one piece and can be inserted into an enlarged recess / of the bearing body through a reduced annular input bore formed in a suitable bearing body, in which it expands automatically , and that the outer splash ^ after the introduction of the. Ring / xn the recess / α es bearing body locking back ter a stop ^ engages within the bearing body. 2.) Wiper ring according to claim 1, characterized in that (dl> indicates that the outer flange / in the unloaded state von.the axis of the ring / away and at an angle to the outside is inclined, which is significantly greater than the angle of inclination of the inner plan view / is. 3 ·) wiper ring according to claim 1 or 2, characterized in that the ring body ^ such a radial Width that it has through the reduced annular a Gangs Tdohrung ^ aes Jager body is freely passable. 4 ·) Wiper ring according to one of claims 1 to characterized in that the inner splash / observation cocy borrowed longer than the outer flange / is * TheS6 UrilBfioyt. (öeschieiouny une ächuuonspi,) lsi oie 4IM-Ui .sin ^ r-imi-uii :,> ie .vüichl from the Y / on> version of the originally submitted documents whether, oils legal 8erieu | ynq of the deviation Isf nloM gsprQff, DIs originally olngorelohlen inferior are «leh In den Amlwklen, you can) * der,» lt <? hn · No «hweli one« reactions interest g «i» ear * nfr »l would be seen & on Anlrog h!« rv « n ous ^ i ftitel «^ i» a tder PIIw n «9atjv $ zu« ten usual Pmkm geliaferi, Oiutsehes Petsiitsral,