CS270827B1

CS270827B1 - Device for hydraulic motor's moving stop log braking with pendulum motion

Info

Publication number: CS270827B1
Application number: CS882786A
Authority: CS
Inventors: Jan Hudcovsky; Juraj Ing Sliz
Original assignee: Jan Hudcovsky; Sliz Juraj
Priority date: 1988-04-25
Filing date: 1988-04-25
Publication date: 1990-08-14
Also published as: CS278688A1

Abstract

In a hydraulic motor with a swinging movement this permits the breaking of the moving stop log in run-out limit positions. The hydraulic motor with a swinging movement consists of a shell in which the moving stop log is installed in a rotating manner. The stop log is firmly fixed to the hydraulic motor shell and splits the hydraulic motor working space into two sections where each of them is connected to a separate on going hole. A body of the breaking equipment is installed in the on going hole through which the working liquid is led and connected to the cylinder area. In the cylinder space of the breaking body equipment, a piston is installed in a sliding manner supported on one side by the first spring placed in the cylinder space. On the other side, the piston is tied to a pin equipped with throttling slots and re-aligned over the hole created in the piston in its axis direction. In addition, the pin is realigned over the hole created in the body so that its ending portion is sticking out into the hydraulic motor working area. A spring is pulled on the ending section of the pin where one end thereof is supported by the body and the other end by the pin. In the cylinder body space the slots are created through which the working space is interconnected with the working liquid piping as well as with channels through which the working area is connected to the cylinder body space.<IMAGE>

Description

Vynález за týká zariadenia, ktorá umožňuje v hydromotore 9 kývavým pohybom brzdenie pohyblivého hradidla v dobehových krajných polohách.The invention relates to a device which allows the movable gate to be braked in the coasting positions in the coasting positions in the hydraulic motor 9.

OoDosial* ea v hydromotoroch s kývavým oohybom prevádza brzdenie pohyblivého hradidla v dobehových krajných polohách prevážne Škrtáním prietoku tlakovoj kvaoalinv v odpadovej vetve, oričom intenzita škntenia Je závislá bu3 od oolohv pohyblivého hradidla, alebo od polohy vonkaJŠej časti hriadeTa hydromotora. Vlastně zariadenie pre brzdenie pohyblivého hradidla Je zabudované ako samostatná časť bu3 do výstupného otvoru hydromotora, alebo je vytvořené na obvode hriadola po oboch stranách pohyblivého hradidla. Nevýhodou takýchto riešeni Je, že ich použitie si vynucuje použitie 3alšieho zariadenia pre eledovanie polohy pohyblivého hradidla, čo má za náeledok při zabudovaní z vonkajšej strany zvačšenie zéstavbových rozmerov a pri zabudovaní z vnútornej strany zmenšenie maximálneho uhla výkyvu· Známe Je tiež rieěenie pri ktorom Je brzdiace zariadenio zabudované priamo na pohyblivom hradidla kyvného hydromotore. Nevýhodou v takomto případe Je zvýšenie pasivných odporov, Čo sa zvlášť nepriaznivo prejavuje najma pri použití hydromotora 8 kývavým pohybom ako elektrohydraulického sorvopohonu.OoDosial * e in oscillating-bend hydraulic motors performs braking of the movable gate at coasting extreme positions, mainly by throttling the flow pressure of the quartz in the sewage branch. In fact, the device for braking the movable gate is incorporated as a separate part either into the outlet opening of the hydraulic motor or is formed on the periphery of the shaft on both sides of the movable gate. The disadvantage of such solutions is that their use necessitates the use of an additional device for eluting the position of the movable gate, which results in an increase in the installation dimensions when installed from the outside and a reduction in the maximum swing angle when installed from the inside. a device mounted directly on the movable slide of the swinging hydraulic motor. The disadvantage in such a case is an increase in the passive resistance, which is particularly unfavorable especially when the hydraulic motor 8 is used by a rocking motion as an electrohydraulic sorter.

Uvedené nevýhody odstraňuje zariadenie na brzdenie pohyblivého hradidla hydromotora s kývavým pohybom pozoetávajúceho z pláSťa, v ktorom je otočná uložené pohyblivé hradidlo a s ktorým je pevne spojené pevné hradidlo rozdeXujúco pracovný priestor hydromotora na dve časti, z ktorých každá Je napojená na samostatný priebežný otvor, v ktorom Je umiestnené teleso brzdiaceho zariadenia, v ktorom Je vytvořené vedenie pracovnej kvapaliny, ktorá navazuje na válcový priestor podlá vynálezu, ktorého podstata spočívá v tom, že vo valcovom priestore telesa brzdiaceho zariadenia je posuvné uložený piost opretý z jednej strany o pružinu umiestnenú vo valcovom priestore a z druhej strany zviazaný s tfňorn, ktorý Je opatřený škrtiacimi drážkami a přesunutý cez otvor vytvořený v pieste v smere Jeho osi, ako aj cez otvor vytvořený v telese tak, Že koncová Časť trna Je vysunutá do pracovného prieetoru hydromotore a Je na nej zasunutá druhá pružina opretá Jedným koncom o trn, pričom v mieste válcového priestoru sú v telese vytvořené Jednak drážky cez ktorá je pracovný priestor přepojený s vedením pracovnej kvapaliny a jednak kanále cez ktoré je pracovný priestor propojený s válcovým priestorom telesa·The aforementioned disadvantages are overcome by a rocking-motion braking device of a moving motor swinging from a housing in which a movable sliding gate is rotatably mounted and with which a fixed damper is fixedly connected dividing the hydraulic motor working space into two parts, each connected to a separate through hole in which A braking device body is provided in which a working fluid line is formed which is connected to the cylindrical space according to the invention, the principle being that in the cylindrical space of the braking device body there is a slidingly mounted piston supported on one side against the spring located in the cylindrical space and of the other side tied to the mandrel, which is provided with throttle grooves and moved through an aperture formed in the piston in the direction of its axis, as well as through an aperture formed in the body such that the end portion of the mandrel is extended into the working hole of the hydraulic motor; The spring is supported by one end on the mandrel, whereby in the place of the cylindrical space there are formed grooves in the body on the one hand through which the working space is connected with the working fluid line and on the other

Výhodou takto utvořeného zariadenia je, že zabezpečuje v plnom rozsahu progresivně tlmenie pohybu pohyblivého hradidla v Jeho dobehovej fáze bez nutnosti použitia SalŠieho zariadenia pre eledovanie polohy pohyblivého hradidla· Umiestnením brzdiaceho zariadenia do vstupného resp· výstupného hrdla sa nezvaČŠujů zéstavbové rozměry a pasivné odbory hvdromotora a podstatné sa zjednodušuje montáž a demontáž brzdného zariadenia, ktorú je možné uskutočniť bez toho, Že by bolo potřebné demontovat celý hvdromotor.The advantage of such a device is that it provides full progressive damping of the movement of the movable gate in its run-down phase without the need of using a saler device for elimination of the movable gate position. This simplifies the assembly and disassembly of the braking device, which can be carried out without the need to remove the entire hydromotor.

Na pripojenom výkrese je znázorněný příklad vyhotovenia zariadenia na brzdenie pohyblivého hradidla hydromotora з kývavým pohybom podl'a vynálezu, kde Je na obr. priečny rez častou hydromotora, v ktorej Je brzdiace zariadenie znázorněné v pozdlžnom řeze.In the accompanying drawing, an example of an embodiment of a device for braking a movable damper of a hydraulic motor for rocking movement according to the invention is shown. a cross section of a portion of the hydraulic motor in which the braking device is shown in longitudinal section.

Hydromotor 8 kývavým pohybom pozoetáva z plášťa 15, v ktorom Je otočné uložené pohyblivé hradidlo 16. S plášťom 15 Je pevne spojené pevné hradidlo 17, ktoré rozděluje pracovný priestor 14 hydromotora na dve ča9ti, z ktorých každá je napojená na samostatný priebežný otvor 18 vytvořený v pevnom hradidlo 17 a v plášti 15. V oboch priebežných otvoroch 18 Jo umiestnené zariadenie pre brzdenie pohyblivého hradidla 16 pozostávajúce z teleea 1.v ktorom Je vytvořené vedenie 11 pracovnej kvapaliny navazujúce na válcový prieetor 8,' v ktorom je posuvné uložený plést 2· O plést 2 jo opretá z jednej strany prvá pružina 9 umiestnené vo valcovom priestore 8 a druhá strana piesta 2 jo zviazanó a třnom 3, na ktorom sú vytvořené škrtiace drážky £ a ktorý Je přesunutý cez otvor 12 vytvořený v smere osi piesta 2. Trn 3 je svojou válcovou Častou vedený v telese JL a Jeho koniec js vysunutý tak, aby zasahoval do pracovného priestoru 14 hydromotora. Na valco2The hydraulic motor 8 oscillates from the housing 15 in which the movable slide 16 is rotatably mounted. A fixed dam 17 is fixedly connected to the housing 15, which divides the working space 14 of the hydraulic motor into two parts, each connected to a separate through hole 18 formed in it. In both through holes 18, there is a device for braking the movable gate 16 consisting of a body 1, in which a working fluid line 11 is formed which is connected to a cylindrical hole 8, in which a sliding knit 2 is placed. 2 is supported on one side by a first spring 9 located in the cylindrical space 8 and the other side of the piston 2 joins with a mandrel 3 on which the throttle grooves 6 are formed and which is moved through an opening 12 formed in the direction of the axis of the piston 2. A cylindrical part guided in the body JL and its end extended to interfere with the working space 14 hydraulic motor. On valco2

CS 270 827 B1 vej časti trna £ vyčniovajú^ej z telesa 1 je nasunutá druhá pružina 10 opierajúca saCS 270 827 B1 of the second part of the mandrel protruding from the body 1 is a second spring 10 supported on

Jedným koncom o teleso j. a druhým koncom o trn J3. V mieete válcového priestoru 8 эй v telese 1 vytvořené jednak drážky 4, cez ktoré je pracovný prieetor 14 přepojený e vedením 11 a jednak kanály 6, cez ktoré Je pracovný prieator 14 přepojený э válcovým priestorom &·One end of the body j. and the other end of the mandrel J3. In the space of the cylindrical space 8, the grooves 4 are formed in the body 1, on the one hand through which the working hole 14 is connected by a conduit 11 and on the other hand by channels 6 through which the working preheater 14 is connected by a cylinder space.

Počas prevádzky sa vedením 11 privádza cez drážky 4 do jednej Časti pracovného priestoru 14 pracovnó kvapalina. Poeobenim tlaku pracovnej kvapaliny эа pohyblivé hradid1° začne otáčať, pričom pri dobiehaní do krajnej polohy narazí na trn £ a začne ho zatláčať do telesa £♦ Posobením prvej pružiny 9 sa spolu β trnom 3 presúva vo valcovom priestore 8 tiež piest 2; ktorý postupné překrývá drážky 4, cez ktoré je z druhej Časti pracovného priestoru 14 vytláčená cez zmenšujúcu sa medzeru 7 pracovná kvapalina do vedenia 11. Ke3 pie9t 2 úplné překryje drážky 4 može vytlačovaná pracovná kvapalina do vedenia 11 prúdiť len cez kanály 6; válcový prieetor 8 a škrtiaca drážky 5, alebo cez prietokovú plochu 13 vytvorenú medzi trnom £ a otvorom 12; čím je zabezpečené progresivně tlmonie pohyblivého hredidle 16 v Jeho dobehovej fáze. Po zastavení pohyblivého hradidla 16 začne pracovná kvapalina prúdiť do vedenia 11 a poeobenim jej tlaku ea presunie pie9t 2 vo valcovom priestore 8 smarom dolu. Tým 9a otvoria drážky 4 a vedenie 11 эа cez medzeru 7 a drážky 4 přepojí s pracovným priestorom 14, do ktorého začne prúdiť pracovná kvapalina. Poeobenim tlaku pracovnej kvapaliny ее pohyblivé hredidlo 16 začne otáčet na druhů stranu a celý popísaný cyklus sa opakuje. Pre zabezpečeni© správnej činnosti pri brzdění pohyblivého hradidla 16 mueí byť druhá pružina 10 dimenzovaná tak, aby počas tlmenia bol třn 3 stále přitlačený na pohyblivé hradidlo £6. Takto vytvořené zariadenie potom plni popři inom tiež funkciu bezpečnostněJ brzdy, ktorá zabraňuje pri poruche hydromotora plnému nárazu pohyblivého hradidla 16 na pevné hradidlo 17.During operation, the working fluid is fed via the grooves 4 to one part of the working space 14. By depressing the working fluid pressure kvapal and the movable slide 1 °, it starts to rotate, and when it reaches the extreme position it hits the mandrel 8 and starts to push it into the body 8. which successively overlaps the grooves 4 through which the working fluid is forced from the second part of the working space 14 through the decreasing gap 7 into the conduit 11. When the pie 9t 2 completely covers the grooves 4, the discharged working fluid into the conduit 11 can flow only through the channels 6; a cylindrical hole 8 and throttling grooves 5, or via a flow surface 13 formed between the mandrel 8 and the opening 12; thereby providing progressive attenuation of the movable shaft 16 in its run-down phase. Upon stopping of the movable gate 16, the working fluid begins to flow into the conduit 11 and by applying its pressure e, it moves pie 2 in the cylindrical space 8 downwards. Thereby, the grooves 4 are opened and the conduit 11a is passed through the gap 7 and the grooves 4 are connected with the working space 14 into which the working fluid begins to flow. By varying the working fluid pressure ее the movable thinner 16 starts to rotate on the other side and the entire cycle described is repeated. In order to ensure proper operation when braking the movable gate 16, the second spring 10 may be sized such that, during damping, the mandrel 3 is still pressed against the movable gate 66. The device thus formed also fulfills, inter alia, the function of a safety brake which prevents the movable gate 16 from fully impacting the fixed gate 17 in the event of a hydraulic motor failure.

Claims

On the other side of the mandrel 3, a second spring 10 is supported from the body 2, which is supported by one end of the mandrel 3 and a second end by a mandrel 3. In the space of the cylindrical part 8 there is a groove 4 formed by the groove 4 through which the work is performed the space 14 is connected and through the conduits 11 and the channels 6 through which the working space 14 is connected to the cylindrical space 8. During operation, the liquid 11 is fed through the grooves 4 into one part of the working chamber 14 by means of a liquid. By displacing the working fluid pressure, the movable gate 16 starts to rotate, while at the end of the run-in to the end position! on the thorn 3 and push it into the body JL. Also, by moving the first spring 9 together with the mandrel 3, in the cylindrical space 8, the knit 2 also moves, which gradually overlaps the grooves 4, through which the working fluid is driven out of the second working space 14 through the changing gap 7. it overlaps the grooves 4, the extruded working fluid can only flow through the channels 6; a cylindrical space 8 and a throttle groove 5, or through a flow surface 13 formed by an intermediate mandrel 3i and an opening 12; the progressive damping of the movable damper 16 in its running phase is ensured * After the movable damper 16 is stopped, the working fluid begins to flow into the duct 11 and by pushing its pressure, the piston 2 is moved downwards in the cylindrical space B. and the conduit 11 is connected to the working space 14 through the gap 7 and the grooves 4 into which the working fluid starts. By shifting the working fluid pressure, the movable gate 16 starts to rotate on the other side and the entire swept cycllue is repeated. In order to ensure that the movable gate 16 is correctly braked, the second spring 10 must be dimensioned such that during thrust the thorn 3 is still pressed against the movable gate 10. The device thus created then also performs a safety brake function which prevents a full impact of the movable gate 16 on the fixed gate 17 due to a failure of the hydraulic motor. SUBJECT OF THE INVENTION An apparatus for braking a movable gate of a hydraulic motor and a rocking motion consisting of a jacket in which it is rotatably mounted a movable gate and with which a fixed gate is connected, dividing the working space of the hydraulic motor into two parts, each of which is connected to a separate continuous opening, in which a telescoping device is placed, in which a working fluid line is formed which connects to the cylindrical space characterized in that, in the cylindrical space (8) of the braking device body (1), the piston (2) is supported on one side by a first spring (9) located in the cylindrical space (8) and tied with a mandrel ( 3), which is provided with crimping grooves (5) and moved through the opening (12) formed in the sand (2) in the direction of its oai as well as through the opening formed in the body (1) so that the end portion of the trunk (3) is extended into the working space (14) of the hydraulic motor and the second one is slid on it the spring (10) supported by one end of the body (1) and the other end of the mandrel (3), wherein in the space of the cylindrical space (0) the grooves (4) are formed in the body (1), through which the working space (14) is ) connected to the working fluid line (11) o on the one hand (6) through which the working space (14) is connected to the cylindrical space (8) of the heat (1). 1 drawing