DE1810260B - Device for telecontrol technology in mining, especially on hydraulic mine support - Google Patents

Description

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and is sealed at 22 with an annular seal. A screw 23 is used to axially adjust the tube 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 tube 20 and the side Sb of the membrane 5. The clear interior 25 of the tube 20 leads out of the chamber 12 to the outside into the atmosphere.

The device can be connected to a compressed air line, for example. Then the compressed air flows into the chamber 12, from there through the clear interior space 25 of the tube 20 and thereby arrives into the atmosphere.

A support spring with a progressive characteristic curve is located under the diaphragm in the pressure chamber. The support spring consists of several parts 40 and 40 clamped axially to the annular gap at a distance from one another 41. Parts 40 and 41 are spring washers that have a circular ring shape. Accordingly the spring washer 40 has a circular or annular opening 43; the spring washer 41 has a circular recess 42. The recesses 42 and 43 differ in terms of ·· lent their diameter. In the direction of the gderweges take these diameters, so that the diameter of the recess 43 is smaller than that of the Aus

1Ä of the fluid pressure on the

severely limited. As a result, a Luftdmckin builds ^g 12% uf the chamber, the abgenom- at 19

Fluid pressure and ver

Disk 40 comes with a further increase in pressure

achieve pressure and pressure analog signal

1 sheet of drawings

Claims (5)

Niche application of the device according to the patent claims: main patent disruptive. ''. ". ''. '. The problem posed by the invention is 1. In telecontrol technology in mining, especially the subject of the main patent application by special training in hydraulic pit lining 5 details of the means that are suitable, settable and for the conversion of a liquid- the relationship between liquid pressure and pneumatic pressure into an analog pneumatic pressure-matic analog pressure signal of the linearity wide signal Serving device with a membrane that is going to adjust. on one side with the liquid pressure and according to the invention these means consist in that on the other side, with constant pneumatic pressure, a support spring under the diaphragm in the pressure chamber matic pressure of a completed by it is arranged with a progressive characteristic. 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 fluid pressures, it is proportionate has constant supply pressure and from which it sags sharply, but that with increasing pressures one between the connection and the outlet 15 the deflection of the membrane becomes weaker, opening up to under the membrane d. H. the increase in fluid pressure by one pipeline bohmng, which, with the membrane, creates a pressure unit of a weakening Annular gap forms, is led to the outside, after bending the membrane faces. Patent application P 15 33 722.Ϊ, thereby ge The spring under the membrane is useful indicates that under the membrane (5) 20 from several axially to the annular gap at a distance of in the pressure chamber (12) a support spring (40, 41) with parts clamped to one another. These parts can progressive characteristic is arranged. are formed by spring washers. Then it's over- 2. Device according to claim 1, characterized in that the spring washers record a circular ring shape, that the spring around the membrane and the ring diameter in the direction of the several increase axially in the annular gap at a distance of one as spring travel. other clamped parts (40, 41). In the following, the invention is based on the in 3. Apparatus according to claim ₁ characterized by the embodiment shown in the drawing, which explains the parts made of spring washers in more detail stand. The drawing shows in cross section, however 4. Apparatus according to claim 1 and several of the 30 schematically, d. H. leaving out all for that the following claims, characterized by the understanding of the invention not required The circular spring washers show details, the basic structure of the inven- and the ring diameter in the direction of the device according to the spring. increase the way. The device has a device body 1, which consists of 35 consists of two parts 2 and 3. The upper part 3 in the drawing is screwed into part 2. the Part 2 has an annular support surface 4 for placing an in the illustrated embodiment circular membrane 5. The screwed-in part 3 The invention relates to a telecontrol technology 40 has a surface 6 opposite the surface 4 In mining, especially on hydraulic trenches and an annular seal 7, in order to Removable and for converting a liquid screw, the membrane is liquid-tight on the keitsdruckes in an analog pneumatic pressure support surface 4 to be pressed. signal-serving device with a membrane that is attached to the screwed-in body 3 has a central one side with the fluid pressure and on its 45 bore 8, which is provided with an internal thread 9. the the other side with constant pneumatic pressure hole 8 is used to receive a nozzle, the a pressure chamber closed off by it serves to supply a liquid pressure. the that acts on an outlet for the liquid analog signal, the free area 5 α of the mem and a connection for the constant supply branch 5. The liquid can come out of the pressure chamber has pressure and from which one between the connection 50 of a hydraulic one, otherwise not shown At the end and the finish, come under the pit stamp. Membrane-reaching drainage hole, which is connected to the The larger body of the device has a circular Membrane forms an annular gap, outwardly shaped recess 12, which form a pressure chamber is, according to patent application P 15 33 722.1. det. One side of the pressure chamber is covered by the mem- The formation of the analog signal takes place at this 55 bran 5 completed. The side SA compared to device B by the change of the annular gap due to opposite side S of the membrane under pressurized air of the changing liquid pressure and which acts upon by the provided by a conditional with internal threads 14 alternate throttling of the derivation bore 15 via an annular channel 16 drilling. Such a device can miniaturize constant pressure is introduced into the space 12, 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 the matic signal formed by the bore 15. There is a connection with an internal thread 18 The main patent application used to change seen exit 19, on which the analog signal in still of the annular gap only the deflection of the 65 to be described arises. Membrane. 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 in front of 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