DE1810260C3

DE1810260C3 - Device for telecontrol technology in mining, especially on hydraulic mine support

Info

Publication number: DE1810260C3
Application number: DE1810260A
Authority: DE
Inventors: Hans 4300 Essen Rieschel
Original assignee: Bergwerksverband GmbH
Current assignee: Bergwerksverband GmbH
Priority date: 1968-11-22
Filing date: 1968-11-22
Publication date: 1974-08-01
Also published as: DE1810260A1; US3592063A; GB1281550A

Description

und bei 22 mit einer Ringdichtung abgedichtet ist. Bine Schraube 23 dient zur axialen Verstellung des Rohres in der es aufnehmenden Bohrung und damit zur Einstellung der Größe eines Ringspaltes 24, der zwischen dem freien Ende des Rohres 20 und der Seite 56 der Membran 5 gebildet ist. Der lichte Innenraum 25 des Rohres 20 führt aus der Kammer 12 nach außen in die Atmosphäre. and is sealed at 22 with an annular seal. A screw 23 is used to axially adjust the pipe in the bore receiving it and thus to adjust the size of an annular gap 24 which is formed between the free end of the pipe 20 and the side 56 of the membrane 5. The clear interior 25 of the tube 20 leads out of the chamber 12 to the outside into the atmosphere.

Das Gerät kann beispielsweise an eine Druckluftleitung angeschlossen werden. Dann fließt die Druckluft in die Kammer 12, von dort durch den lichten Innenraum 25 des Rohres 20 und gelangt dadurch in die Atmosphäre.The device can, for example, be connected to a compressed air line be connected. Then the compressed air flows into the chamber 12, from there through the clear Interior 25 of the tube 20 and thereby passes into the atmosphere.

Unter aer Membran befindet sich im Druckraum eine Stützfeder mit progressiver Kennlinie. Die Stützfeder besteht aus mehreren axial zum Ringspalt im Abstand voneinander eingespannten Teilen 40 und 41. Bei den Teilen 40 und 41 handelt es sich um Federscheiben, die Kreisringform aufweisen. Dementsprechend weist die Federscheibe 40 eine kreis- ao ringförmige öffnung 43 auf; die Federscheibe 41 besitzt eine kreisringförmige Ausnehmung 42. Die Ausnehmungen 42 und 43 unterscheiden sich hinsichtlich ihrer Durchmesser. In Richtung des Federweges nehmen diese Durchmesser zu, so daß der Durchmesser der Ausnehmung 43 kleiner als der der Ausnehmung 42 ist.A support spring with a progressive characteristic is located under the diaphragm in the pressure chamber. The support spring consists of several parts 40 and 41 clamped axially to the annular gap at a distance from one another. The parts 40 and 41 are spring washers which have the shape of a circular ring. Accordingly, the spring washer 40 has a circular or annular opening 43; the spring washer 41 has an annular recess 42. The recesses 42 and 43 differ in terms of their diameter. These diameters increase in the direction of the spring travel, so that the diameter of the recess 43 is smaller than that of the recess 42.

Schwankungen des Flüssigkeitsdruckes auf der Seite 5β der Membran 5 führen zunächst zu einer Durchbiegung der Membran und zur Verkleinerung des Ringspaltes 24. Dadurch wird der Abfluß der Druckluft aus der Kammer 12 mehr oder weniger stark eingeschränkt. Infolgedessen baut sich ein Luftdruck in der Kammer 12 auf, der bei 19 abgenommen werden kann.Fluctuations in the liquid pressure on the side 5β of the membrane 5 initially lead to a Deflection of the membrane and to reduce the size of the annular gap 24. As a result, the outflow of the Compressed air from the chamber 12 more or less restricted. As a result, air pressure builds up in the chamber 12, which can be removed at 19.

Bei zunehmendem Flüssigkeitsdruck und sich vergrößerndem Federweg der Membran 5 stützt sich die Membran schließlich auf der Innenkante der in axialer Richtung gesehen ersten Federscheibe 40 ab und biegt diese Federscheibe durch. Nach der Federscheibe 40 kommt bei weiterem Druckanstieg die. Federscheibe 41 zur Wirkung. Durch eine entsprechende Anzahl von Federscheiben läßt sich ein progressiver Federweg and damit eine weitgehende Linearität des Zusammenhanges von Flüssigkeitsdruck und Druckanalogsignai erreichen.With increasing liquid pressure and increasing spring travel of the membrane 5, the is supported The membrane finally depends on the inner edge of the first spring washer 40, seen in the axial direction and bends this spring washer. After the spring washer 40, the pressure increases further. Spring washer 41 to the effect. A corresponding number of spring washers can be used progressive spring deflection and thus an extensive linearity of the relationship between fluid pressure and achieve pressure analog signals.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

ι * niche uses of the device according to the old patent application: ren suggestion disturbing. The problem of the invention is then, fVhl ** * The problem g

1. In the remote control technology in mining, and in the subject ^ e ₈ fterenVorschlages *
special training in the hydraulic pit construction that is suitable for a device with a membrane that can be used and used to convert a fluid, the relationship between fluid pressure and pneumatic pressure, into an analogue pneumatic pressure signal. to adjust the going.

on one side with the liquid pressure and Erfir.d according to these means then exist that

on its other side with constant pneu- io under the diaphragm in the pressure space a support of the matic pressure of a closed off with progressive characteristic is arranged «
Pressure chamber is acted upon, the one outlet. This ensures that the membrane is in the

for the analog signal and a connection for the range of low liquid pressures has a relatively constant supply pressure and from which it bends sharply, but with increasing pressures the deflection of the membrane between the connection and the outlet 15 becomes weaker, opening up to below the membrane ie the increase in the liquid pressure around a line bore which, with the membrane, forms a pressure unit of a weaker through-annular gap, is led to the outside, because the membrane is bent,
characterized in that under the The spring under the membrane is expedient

Diaphragm (5) in the pressure chamber (12) a support spring ao of several axially to the annular gap irr = .distance from- (46,41) is arranged with a progressive characteristic. clamped parts. These parts can

2. Apparatus according to claim 1, characterized by spring washers. Then it is mapped out that the spring under the diaphragm is partially effective when the spring washers are circular axially in the annular gap at a distance from one another and the ring diameter in the direction of the other clamped parts (40, 41). the spring travel increase.

3. Apparatus according to claim 1, characterized in the following the invention is based on the in draws that the parts from spring washers in the embodiment shown in the drawing stand. explained in more detail.

4. Apparatus according to claim 1 and several of the drawing shows in cross section, however following claims, characterized, 30 schematically, i.e. omitting all for the that the spring washers have a circular shape. Understanding of the invention is not necessary and the ring diameter in the direction of the spring details, the basic structure of the invention path gain weight. appropriate device.

The device has a device body 1, which consists of 35 consists of two parts 2 and 3. The one in the drawing

upper part 3 is screwed into part 2. the

Part 2 has an annular support surface 4 for placing an in the illustrated embodiment

The invention relates to a membrane 5 which is circular in telecontrol technology. The screwed-in part 3 in mining, in particular on hydraulic pit 40, has a surface 6 opposite to surface 4 can be used for expansion and to convert a liquid and an annular seal 7 to the unity pressure The membrane is screwed onto the liquid-tight in an analogue pneumatic pressure Signal-serving device with a membrane that presses on the support surface 4.

one side with the liquid pressure and on her the screwed-in body 3 has a central one

the other side with constant pneumatic pressure 45, bore 8, which is provided with an internal thread 9. The bore 8, which is closed by a pressure chamber, serves to receive a connecting piece which is open and which serves as an outlet for the analog signal for supplying a fluid pressure. The and one connection for the constant supply liquid acts on the free area 5 α which has the membrane pressure and from the one between the attachment

5. The liquid can come out of the pressure chamber Conclusion and the finish opening, up to below the 5 ° of a hydraulic, otherwise not shown Membrane-reaching drainage hole, which originate with the pit punch.

Membrane forms an annular gap, led to the outside. The larger body of the device has a circular shape. This device is the subject of an older non-shaped recess 12 that bilzum a pressure chamber Prior art proposal. det. One side of the pressure chamber is covered by the mem-

The formation of the analog signal is completed at this 55 bran 5. The side 5b of the membrane, which is opposite the side 5a due to the change in the annular gap, is acted upon by compressed air of the changing fluid pressure and the resulting changing throttling of the drainage hole 15 via an annular channel 16 caused by an internal thread 14 drilling. Such a device can miniaturize constant pressure in the space 12 is introduced. and is therefore suitable for. B. to display the high- 60 The bore 15 thus forms a connection to the tensioned liquid pressure in the pressure chamber of a line of compressed air into the device,
hydraulic pit ram with the help of a pneumatic Compared to that formed by the bore 15

matic signal. There is a connection with an internal thread 18

The older device used to change the ring-viewer outlet 19, at which the analog signal arises in a way that is still only slightly deflected in the manner to be described.
bran. The gap width and thus the size of the central in the annular chamber 12 protrudes from the mem-

Analog signals are in this case non-linear from the branch 5 facing end of a pipe 20, which in Fluid pressure dependent. For some tech- a corresponding hole is screwed in at 21