SU1627716A1 - Hydraulic prop of powered support - Google Patents

Abstract

The proposal relates to mining, in particular, to the creation of mechanized means for fixing clearing faces, working under conditions of dynamic loading. The aim of the invention is to improve the design of a hydraulic post and increase the reliability of its operation under dynamic loads. The hydraulic strut of mechanized lining contains a 1 V cylinder The piston 2 is placed in it. An emergency valve (K) is located in the head of the stem 3 with a locking element in the form of a truncated cone 12 It is rigidly connected to the piston head 2 In the axial bore of the valve A metal rod (W C) 10 is attached. One end of the CS) is connected to the locking element. The hydraulic lock is connected to the cavities by channels through the channels. An additional piston 4 is placed in the axial bore of the rod 3 and / or the other end C) ( ) Groove 8 is flushed in the lower part of the cite shetelyk about port n 4 and communicated with the cut with a groove of 9 Olid is made on the inner wall of the polo on the wall and south side of the river) . I sing a woman) mix 14 in the form of IHI In axial opening and emergency K 12 on. / / but a safety device is installed K II Locking The K II element is rigidly. In 1an with about 1 equestrian 10 At IK and the K II and K 12 pits are executed. The joint operation of K II and K 12 PO1B01YASG to increase the volume of the displaced head I1 rare increase in pressure, resulting in growth and capacity of its orelinter. After the termination of your K 11 and K 12 acres and hydrostation, we continue to work in static mode 2 or F (L O5 th 3 J O5

Description

Cold time refers to mining, and to) ascending and creating mechanized processes for fixing treatment plants, which, under the conditions of isamymic io on i p / kei, and can our application to iorioi l oyuvlenpi mine hydraulic racks and their ks p.natatsii

11e and u (gaining the simplification of the end of the table to the isostoiki and an increase in its reliability in its works under the bolts i (aipyit ax

On (none 1 is schematically pre-specified ID | 1AV.: ICH1 (tick of the shaft support, in FIG. 2, I-I on flash 1

 motorized lid support

Cfg di shn f 1, shaded 2, in coyome, shade 2, rigidly connected to the first 5) and monk 3, fitted with a possible ibio axial) ps relocation of additional heat 4. separating pt eye to K) to m and a n about a pizhny about h no yus h, koyurye communicated among themselves h h p b i idiom the gap formed by the mas 8 of the piston 1 and mmyivon proyuchkoi with food

laiuion a vn i rens AND the surface of the monk i 1 With the help of a memorial with a Cn 101U shi ie n, n1) 1 and piston 4 is associated with a safety valve with valve 11, which is axially oi sepcinn emergency) to ypana 12, pa is placed in question about yuchks i about nyonka n inoka 5

and rhenium iu p ipchivayuschey over the nose 11 to) i o yukka M inok 3 and: otsovym povysh ichnos i m protected guitelno about II and ayarnina 12 to ypanon obra (ovacha i

call camera 14, coyura through cap 1 in i about yuvka and ipoka 3 connected to charge i locking uponciBO K) According to i, to Me i by weai fa I found 1 sheg wasp by i ishdenny in i to my call chamber 11 are yuhranig 1Yp, w to ia iiaii II and emergency 12 are pressed to

tsn) with her many t i 17 zino1cho cianoBiuiHo i on stock i

13 double ti i.ie 17 and on yum niky 5 completed, describe 18. connecting under k.nnnno hollow n 5 cherm bulk 14 with the drain Mai not i radya when open n) e

(Guard and 1YY1 o to ananan 11, and in loiome 1.J imeme kana ibi 20, which bind i the same

ui i 5 by an athoperator ii |) M О1КРЫ1 avna rkshko to lanaiia 12 FnipoiaMOK 21 under the keys to the pores of the rifle 22 and in ipa I IloiBoi working AND AHIKOCIH to 21 and ia lee to the piston / usi and 22 pro -zvoipe through grchboprovod 23

I and na ka pa6oiaei i ni i IIUIM o6 | ia som

I1Here Be ei o ot the cheek i locks i i a yuoy kame | 1Y 11 measure ((ar bottom lockout i i 1b and cana i 15 in addition 13

Not at all 3 1az through i 1). Noah in ia) chambers 14 and presses up pre-iox |) shi i 1 iy II and emergency 12 KianaiaK pyyinom eeiu 1 7, after what about ka

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Measure 14 is locked by the locking device 16

In the prototype of the valve, they are placed in different parts of an idiostable and, therefore, each of them is pressed to its saddle by separate 1pair elements of the springs. Since the area (Si) of the end surface of the emergency valve is 12 nskcotko larger than the area (Sj) of the same surface of safety valve 11 of the valve 11, then and Rigati valve sizes 12 to 17, equal to r, PrH b | (s, IV is the pressure in chamber 14) (the force of the pressure of the pump 11, expressed as I - РГ-Ь г e. The pressing force of each valve determines the pressure value of their response

When connecting the pipeline 2, with the pressure of the master master 1, the working fluid through the air lock 21 is fed to the piston head 22 and simultaneously to the bottom 6 and its black core 7, formed by b and ring bore 9, h 5 vmu i) ish current cavities Piston 2 with i i 3 3 move the size of the pyroetm in height increases and the securing pin is spreading under the initial pressure between the soil and the roof

Under static loading of an i-motor, a pitch 2 is slowly lowering with 3 lice on the stem, pressure in the piston cavity 22 and in accordance with the current of cavities b and 5 consecutive Ho 3 | iaciaer (a), for example, 15 Pa, on the lower end surfaces of the piston 4 piston 4 and, presumably, valve 11, EFFORTS are defined, defined by the expression h, -) exceeding the pressing force swarming 11 to the saddle 17 (D) 1. |) Under the deist Minx EFFORT occurs ii ipt preserving: single valve 11 and working fluid from the upper inside of the 5 in 5 through oTBepCTiit 18 and the 19 nociynaer pipeline to the DRAIN highway At the same time, the free flow of 1.1 working liquid from the piston cavity 22 and the total 6 with her 6 to the upper one drains The internal cavity 5 through the piston 4, which increases in size, ie ibHoi about the piston 4 upwards iaiop7 The magnitude of the cavity 7 is chosen so as not to prevent the interflow of fluid between the intracavity 5 and 6 at (closing the safety valve 11

In the period of dynamic hydrostatic loads, nophi- n 2 s ps is displaced. 1 st stem 3 nnsh with a velocity p 1 innoi velocity with a shock naipv / keni The pressure of the working fluid in in a hygienic jacket begins with a vacuum

the pressure in the piston cavity 22 and the lower inner cone cavity 6 adjoining it will be ahead of the pressure growth in the upper intra cone cavity 5 due to the fact that due to the speed of the Hdipy / Keny process valve, the working fluid does not have time to flow through the small gap 7 between these cavities and equalize the pressure value in them. As a result, a pressure drop (P) arises between the internal flux cavities 5 and 6, regardless of how much the pressure was in the hydrocounter at the time of its dynamic loading, and at the bottom end face. The additional piston 4 surface (S4) appears to be a force equal to P-84. If this value is greater than the force pressing the safety valve 11 against the saddle 17, the additional piston 4 will move upwards and the opening will be connected foot with him 4epei metal rod 10 valve 11

The safety valve activates faster than a similarly designed valve in the prototype, which has greater inertia, which is primarily due to the different size of areas where valve opening forces are created. In the proposed design, the end face area and the additional piston connected gesture with a safety valve, significantly more than the corresponding surface area of the valve’s locking element in the known solution, and hence the rate of increase Force up to the value of opening this valve will be higher than in the latter provided that the valves are adjusted the same

After full opening of the safety valve 11, its shank comes into contact with the end surface of the emergency valve 12 and under the action of a force on the additional piston 4, which prevents the force of pressing both valves to the double seat 17 () - + F), the emergency valve 12 opens Simultaneously with the movement of the additional piston 4 and the opening of the valves 11 and 12, the magnitude beyond the jurassic 7 between the groove 8 and the annular groove 9 increases

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with. 0 5

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Through the formed "pore 7" working fluid flows from the piston cavity 22 and the lower intra rodstock 6 into the upper cavity 5 and further through the safety valve 11, the opening 1К and the pipe 19 is thrown into the drain main (not shown), and through the emergency valve 12 and channels 20 - to atmospheric osm. Combined operation of safety valve 11 and emergency valve 12 makes it possible to increase the volume of working fluid displaced from the hydroelectric restraint and thereby avoid a sharp increase in pressure in it, leading to the destruction of its walls. linara After the termination of the shock load, the emergency 12, and then the safety 1 1, valves are closed and the hydraulic post continues to operate in a static mode

Formula yupretenich

The hydraulic strut of mechanized roof supports contains a cylinder, a piston located in it, an emergency valve located in the rod head with a truncated conical element rigidly connected to the piston, a hollow rod with an inner wall and an axial bore in which the metal with i ergen, one end connected to the locking element, hydraulic lock, connected by channels with hydrocapillary cavities, placed in the axial bore of the rod and rigidly connected to the other end of the metallic rod; nH, in the lower part of which there is a groove communicated hydraulically with an annular groove made on the inner wall of the hollow stem, an elastic element located in the upper inner part of the new stem, different in that in order to simplify the design of the hydrostatic and increase reliability of operation hydrostoics with dynamic on: ruzka, safety valve is installed movably in the axial hole of the emergency valve, it is the locking element is rigidly connected to one end of the metal rod, nadkdannye cavity emergency safety) and to the pans are made airtight, and the element - a ga g

Claims (1)

Claim A hydraulic strut of a mechanized lining containing a cylinder, a piston placed in it, an emergency valve located in the stem head with a locking element in the form of a truncated cone, rigidly connected to the piston, a hollow rod with an inner wall and an axial bore in which there is a metal rod, one the end connected with the locking element, a hydraulic lock communicated by channels with cavities of the hydraulic stand, placed in the axial 'bore of the rod and additionally rigidly connected to the other end of the metal rod , in the lower part of which a groove is made. Hydraulically connected with an annular groove 35 made on the inner wall of the hollow rod, an elastic element located in the upper inner part of the hollow rod, characterized in that. that, in order to simplify the design of the hydraulic stand and increase the reliability of the hydraulic stand at ⁴⁰ dynamic loads, the safety valve is mounted movably in the axial hole of the emergency valve, its locking element is rigidly connected to one end of the metal rod, the valve valves of the emergency and safety valves are sealed, and the elastic element - in the form of gas. Compiled by A. Rakitin Editor M. Tovtin Order 324 Tehred A. Kravchuk Proofreader M. Pozho Circulation 281 Subscription VNIIIPI of the State Committee for Inventions and Discoveries at the State Committee for Science and Technology 113035, Moscow, Zh-35, Raushskaya nab., D. 4/5 Production and Publishing Plant "Patent", Uzhhorod, st. Gagarina, 101