SI9800304A - Stopping slip piece - Google Patents

Abstract

The stopping slip piece (1) consists of a slip piece chassis (2) and a stopping wedge (5), while the stopping wedge (5) is flexibly guided along the laterally positioned guiding clamps (7) transverse to the leading guiding slots (8) of the slip piece chassis (2) flow direction (S) and features a sealing rubber elastic coating (9). To provide a relatively cheap and easily moving, but wear resistant construction, the guiding clamps (7) on the stop wedge (5) are compared to its moving direction (R) located at the central panel (F) level in flow direction (S) against the projected closure surface (F) of the stopping wedge on the movement level (E) providing a coating (9) of the stopping wedge (5) in an already known way enclosed wrapping of the stopping wedge.

Description

ZAPORNI DRSNIKCLOSE BODY

Izum se nanaša na zaporni drsnik z dhišjem drsnika in zapornim klinom, pri čemer je zaporni klin premično voden vzdolž stransko odmaknjeno nameščenih vodilnih spon prečno k smeri pretoka potekajočih vodilnih utorov ohišja drsnika in ima tesnilno gumijasto elastično oplaščje.The invention relates to a locking slider with a slider housing and a locking wedge, the locking wedge being movably guided along the laterally spaced guide clips transversely to the flow direction of the running guide grooves of the slide housing and having a sealing rubber elastic sheath.

Doslej so takšni na komandnem vretenu prikrmiljeni zaporni klini takih zapornih drsnikov za drsni premik v višinskem območju prikrmi 1 j enj a vodeni stransko in v območju komandnega vretena. pri čemer tvori tesnilo klina obodnostransko navu1 kanizirano oplaščje. Ugotovljeno je. da takšen način vodenja klina zaradi obremenitve povzroči, da se zaporni klin poševno premakne, zaradi česar pride do neugodnih razmer pri prenosu moči, posledično pa predvsem pri višjem številu preklopov do prezgodnje obrabe. Ker je poleg tega gumijasto elastično območje oplaščja na drsnih površinah iz funkcionalno tehničnih razlogov narejeno iz sorazmerno tanke plasti, se ti nanosi tudi hitro obrabijo. Razen tega je samo telo zapornega klina izven gumijastega oplaščja podrvrženo koroziji, s čimer se obstojnost še nadalje zmanjša.Until now, the locking wedges of such locking sliders for sliding movement in the height range are steered sideways and in the area of the command spindle. the wedge seal forming a double-sided threaded sheath. It is established. that such a method of steering the wedge due to the load causes the locking wedge to be obliquely displaced, resulting in unfavorable conditions for the transmission of power, and consequently, in particular, for a higher number of switchings to premature wear. In addition, since the rubber-elastic area of the coating on the sliding surfaces is made of relatively thin layers for functionally technical reasons, these deposits are also worn out quickly. In addition, the body of the locking pin outside the rubber jacket is subject to corrosion, further reducing its durability.

Po EP 0 146 112 A je bil že predlagan zaporni klin za zaporne drsnike z vsestranskim antikorozijskim gumijastim elastičnim omotom, ki ima za stransko vodenje na ožjih straneh oblikovane vodilne utore, ki polzijo na v ohišju oblikovanih vodilnih letvah. Za zboljšanje polzilnih lastnosti se v vodilne utore dodatno vstavi posebni drsni čevelj (Gleitschuh) . pri čemer so potrebni razmeroma dolgi vodilni utori, da bi se dosegla ustrezna stabilnost opore. Tudi tu pa se zaradi namestitve utorov ni mogoče izogniti poševni postavitvi klina, ki ga povzroči obremenitev in odpornost proti obrabi je zato prav majhna. Upoštevati pa je treba še znatno višje proizvodne stroške zaradi zahtevne zaključene oblike vložka drsnega čevlja (Gleitschuheinsatz1.According to EP 0 146 112 A, a locking wedge has already been proposed for locking sliders with a versatile anti-corrosion rubber elastic wrap, which has guide grooves for lateral guidance on the narrow sides, which creep onto the guide rails formed in the housing. To improve the shear properties, a special sliding shoe (Gleitschuh) is inserted into the guide grooves. with relatively long guide grooves required to achieve adequate stability of the support. Here too, due to the installation of the grooves, it is not possible to avoid the oblique positioning of the wedge, which is caused by the load and the resistance to wear is therefore small. However, even higher production costs have to be taken into account due to the demanding finished shape of the slip shoe insert (Gleitschuheinsatz1.

Naloga izuma je torej napraviti tak uvodoma opisani zaporni drsnik, ki se odlikuje z razmeroma nizkimi proizvodnimi stroški, z visoko korozijsko zaščito, z dobrim drsnim vodenjem in predvsem tudi z obrabno odpornostjo.The object of the invention is therefore to make such a shut-off slide described above, which is characterized by relatively low production costs, high corrosion protection, good sliding guidance and, above all, wear resistance.

Ta izum rešuje to nalogo tako. da sta vodilni sponi na zapornem klinu, z ozirom na njegovo smer premika, nameščene v višini sredine ploskve te v smeri pretoka na premično ravnino projecirane zaporne ploskve zapornega klina, in da oplaščje zapornega klina tvori na že znan način zaprt (sklenjen.) omot zapornega klina. S tem. v nasprotju z običajnimi zapornimi klini navzdol uležajenih vodilnih spon, je vodenje postavljeno na višino oprijemalne točke rezultante pritisnih sil klina in je s tem praktično brez večjih stroškov preprečeno z obremenitvijo pogojeno poševno postavljanje klina. Razmeroma kratko vodenje klina zadostuje in kljub temu se doseže izvrstna obrabna odpornost drsnega sistema. Paralelni ravni položaj vodenja klina ima nadalje za posledico lahkoten hod drsnega vodila, ker odpade pojav zataknitve oz. zaskočenja in slično, in tako zmanjšani sprožitveni momenti dodatno stopnjujejo odpornost proti obrabi. Zaprto oplaščje zapornega klina ščiti telo klina, ki sestoji iz litega železa, posebno i z sferične litine (Spharoguss), zaščitene pred korozijo, za oplaščje pa je smotrno, da sestoji iz kavčuka, ki ima dobre lastnosti odpornosti proti staranju in temperaturi, kot so EPDM (etilen-propi1en-kavčuk) ali NBR (nitrilni kavčuk).This invention solves this task in this way. that the guide clamps on the locking wedge, with respect to its direction of movement, are positioned at the height of the center of the surface and in the direction of flow to the moving plane of the projected locking surface of the locking wedge, and that the locking wedge sheath forms, in a known manner, a closed (closed) wrapping envelope. wedge. With that. In contrast to conventional locking wedges, downwardly mounted guide clips, the guidance is positioned at the height of the gripping point of the result of the compressive forces of the wedge and is thus prevented at no cost by the load-conditioned oblique positioning of the wedge. A relatively short wedge control is sufficient, yet excellent wear resistance of the sliding system is achieved. The parallel straight position of the wedge guidance also results in a smooth running of the sliding guide, since there is no occurrence of a jamming. snap-ons and the like, and thus the reduced trigger moments further increase the resistance to wear. The closed wedge sheath protects the body of the wedge consisting of cast iron, especially corrosion-protected spherical cast iron (Spharoguss), and the sheath is considered to consist of rubber having good aging and temperature resistance properties such as EPDM (ethylene propylene rubber) or NBR (nitrile rubber).

Da bi se tudi v območju vodenja doseglo visoko obrabno trdnost, sta na vodilni sponi nataknjeni vodilni kapi iz pred obrabo odporne in temperaturno stabilne plastične mase. n.pr. POM (po 1ioximeti1 en). ki preprečujeta predčasno obrabo oplaščja v ombmočju vodilnih spon in se lahko po potrebi enostavno zamenjata.In order to achieve high abrasion strength in the control area too, guide rails of pre-wear resistant and temperature-stable plastics are mounted on the guide clamp. E.g. POM (after 1ioximeti1 en). which prevent premature wear of the sheath in the guide clamp area and can be easily replaced if necessary.

Na risbi je predmet izuma podrobneje ponazorjen, in sicer kažejoIn the drawing, the object of the invention is illustrated in more detail, as shown

Sliki J in 2 izumu ustrezen zaporni drsnik v osno normalnem oz. aksialnem prerezu, pri čemer se nahaja zaporni klin na levih polovicah slik v zapornem, na desnih polovicah pa v odprtem položaju.In Figs. J and 2 of the invention, the corresponding locking slider in axially normal or axial section, with the locking wedge on the left half of the images in the locking and on the right halves in the open position.

Slika 3 prikazuje prerez skozi vodilo klina po črti III —III slike 1 v večjem merilu.Figure 3 shows a cross section through a wedge guide along the lines III -III of Figure 1 on a larger scale.

Zaporni drsnik 1 obsega ohišje drsnika 2 z nasajenim zgornjim delom 3 in zaporni klin 5. ki je premično prestavljiv preko v zgornjem delu 3 vrtljivo uiežajenega komandnega vretena 4. Ta zaporni klin 5 se lahko premika s komandnim vretenom 4 prečno k s prehodom 6 ohišja 2 določene smeri pretoka S od spodnjega zapornega položaja (leva polovica sl. 1 in 2) do zgornjega odprtega položaja (desna polovica sl. i in 2). pri čemer poseže zaporni klin 5 z dvema stransko stoječima vodilnima sponama 7 v stranske, vzdolž smeri premika R potekajoče vodilne utore 8 drsnikovega ohišja 2. Vodilni sponi 7 ležita pri tem v višini sredine ploskve M te v smeri pretoka S na premično ravnino E projecirane zaporne ploskve F zapornega klina 5. tako da na zaporni klin delujoči pritiski pretočnega medija ne povzročijo zvrnilnih momentov, ki bi postavili zaporni klin 5 poševno. S tem se izognemo pojavom povišane obrabe.The locking slider 1 comprises a housing of the slider 2 with a mounted upper portion 3 and a locking pin 5. which is movable via the rotary-mounted control spindle 3 in the upper part 3. This locking wedge 5 can be moved with the control spindle 4 transverse x passage 6 of the housing 2 defined flow directions S from the lower stop position (left half of Figures 1 and 2) to the upper open position (right half of Figures i and 2). wherein the locking pin 5 extends with the two laterally guiding guide clips 7 into the lateral guide grooves 8 of the slider housing 2 along the displacement direction R, while the guide clips 7 lie at the height of the center of the surface M and in the direction of flow S on the movable plane E of the projected shutter. of the locking pin F 5. so that the acting pressures of the flow medium do not cause the torques to place the locking wedge 5 obliquely. This avoids the appearance of increased wear.

Kot korozijska zaščita je zapornemu klinu 5 dodano vse klinasto telo obdajajoče oplaščje 9 iz EPDM oz. NBR. Dodatno so za izboljšanje drsnih sposobnosti in za povišanje obrabne trdnosti na vodilni sponi 7 nataknjeni vodilni kapi 10 iz POM. . /TNAs a corrosion protection, a wedge wedge 5 is added to the entire wedge body surrounding the EPDM shell 9. NBR. In addition, guide caps 10 of POM are provided to improve sliding ability and to increase wear resistance on guide clamp 7. . / TN

Claims (2)

PATENTNI ZAHTEVKIPATENT APPLICATIONS 1. Zaporni drsnik (i) z ohišjem drsnika (2) in zapornim klinom (5), pri čemer je zaporni klin (5) premično voden vzdolž stransko odmaknjeno nameščenih vodilnih spon (7) prečno k smeri pretoka (S) potekajočih vodilnih utorov (8) ohišja drsnika (2) in ima tesnilno gumijasto elastično oplaščenje (9), označen s tem, da sta vodilni sponi (7) na zapornem klinu (5) v odnosu na njegovo smer premika (R) postavljeni v višini sredine ploskve (M) v smeri pretoka (S) na premično ravnino (E) projecirane zaporne ploskve (E) zapornega klina (5). in da tvori oplaščenje (9) zapornega klina (5) na že znani način sklenjeni omot zapornega klina (5) .A locking slide (s) with a slide housing (2) and a locking wedge (5), the locking wedge (5) being guided along laterally spaced guide clips (7) transversely to the flow direction (S) of the running guide grooves ( 8) of the slider housing (2) and having a sealing rubber elastic sheath (9), characterized in that the guide clamps (7) on the locking wedge (5) are positioned at the height of the center of the surface (M) relative to its displacement direction (R). ) in the direction of flow (S) to the moving plane (E) of the projected locking surface (E) of the locking wedge (5). and that the sheath (9) of the locking wedge (5) forms, in a manner known in the art, the locking wedge (5) wrapped. 2. Zaporni drsnik po zahtevku 1. označen s tem, da sta na vodilni sponi (7) nataknjeni vodilni kapi (10) iz obrabno odporne in proti temperaturi odporne plastične mase. na primer POM ( po 1ioximeti1 en ) .Locking slide according to claim 1, characterized in that the guide caps (7) are provided with guide rails (10) of wear-resistant and temperature-resistant plastic. for example POM (after 1ioximeti1 en).