DE2947218A1 - Cushioning equipment for securing rail wagon load - has compressed air supply with valve screwing onto nipple, and safety valve fitting - Google Patents

Abstract

The equipment fills cushions etc. with gas under pressure, having a valve (6) screwing onto a nipple (7) on the cushion. The valve has a plug-in housing (5), to which a safety valve (58) is connected, the latter having a compressed-gas union (13). On connecting up, the plugs (37,45) in the valve (6) connect the union to the cushion and the cushion to the safety valve. The valve (6) can be tapped (54) so as to screw onto the nipple, there being a sealing ring (41) at the base of its tapped bore, against which the nipple end face (55) bears. Drain openings (40) are also provided in this bore.

Description

Patent attorneys Dipl.-Ing. Hans Langosch Dring. Heinz Hosenthion 7000 Stuttgart 1 Herdweg 62 Telephone (0711) 296523

J-

Applicant:

company

J. Lorch Gesellschaft & Co.KG

Bahnhofstrasse 22nd

7035 Waidenbuch

Pressurized gas filling device

The invention relates to a üruckgasbef üllvorrichtung for cushions and the like. In particular, for fixing and securing palletized loads in railway cars, etc.. Are pneumatic pressure fittings are known which are formed kissenförtnig and car tire valves to the required, the weight of the charge

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dependent gas pressure. Foot or hand pumps can be used to fill smaller cushions with pressurized gas cylinders with the interposition of pressure reducers or pressure regulating valves inflation can be accelerated. Compressed gas systems (small compressors) are suitable for larger cushions etc.). The cushion pressure is read from a manometer. It has been shown that the Filling can only be done slowly and cumbersome using the known fittings and there is also a great risk of accidents. If the pressure gauge is ignored, incorrectly set, subsequently unintentionally adjusted or if it works imprecisely and is prone to failure the pressure in the pillow is easily too high, it tears and can lead to dangerous accidents.

The invention is based on the object of a pressurized gas filling device to create that is convenient to use and prevents incorrect operation allows easy and quick filling and emptying and, moreover, the necessary security against Accidents guaranteed.

To solve this problem, the invention provides that on a connection nipple of the kiss or the like. a valve part can be screwed on with a

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Plug-in housing to which a safety valve is connected and which has a pressurized gas connection is provided, can be coupled and that the valves of the valve part can be actuated during the coupling are such that between the compressed gas connection and the pillow or the like. on the one hand and between the cushion and the safety valve on the other hand, a connection is made. In the Filling via a pressurized gas system or a

Pressure bottle can be the plug-in housing with a

Shut-off element and a pressure control valve form a structural unit, which is connected to the via a hose Pressurized gas system is connected. The individual elements can also be connected to one another by hoses or they are directly connected to each other.

The pressure control valve is expediently set permanently, the pressure and the power of the Valve are matched to the plug housing and the valve part. When coupling the plug the housing with the valve part becomes the passage opened so that pressurized gas can be supplied by actuating the shut-off device. at removed connector housing are the valves of the

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Valve part closed so that the cushion is kept under pressure. It is written by the filling The inside of the cushion is connected to the safety valve, which, for example, is set to a pressure of 0.6 bar is set, at a higher pressure the safety valve opens, so that the pressure in the cushion is inevitably limited. A quick and safe filling is thus guaranteed, the valve part usually remains on the connection nipple of the cushion, both the valve part and the Plug housings are, as long as they are separated from each other, by a special screw plug or a lock nut protected from dirt and damage.

According to a further feature of the invention, the valve part has an internal thread for screwing on

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the connection nipple, at the bottom of the internal threaded hole a sealing ring is inserted against which the face of the connection nipple can be pressed, in the area of the internally threaded bore there are drainage openings provided, over the valve part is therefore firmly screwed onto the connecting nipple until its end face provides a secure seal against the sealing ring. If the cushion is to be deflated, the valve part must only need to be screwed back a little so that the pressurized gas over the end face of the connection nipple and the drainage openings escape can.

For a quick connection, the plug-in housing has a union nut which can be screwed against the valve part is, so that this is pulled with a sealing cone against a sealing cone of the plug-in housing. According to the invention, the external thread of the valve part is covered by an (ir if fr ing, via the on the one hand the valve part can be easily held and on the other hand the external thread is protected from damage.

So that filling can be carried out quickly

- A pressure bag with a volume of 1.5 m should e.g. be inflated to 0.6 bar overpressure within 10 minutes - the valve part has more than one

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valve inserts distributed around the circumference. For the connection between the cushion and the safety valve a pressure valve is arranged in the center. This and the valve inserts become automatic opened during the connection of the plug-in housing and the valve part. When loosening the connection the valves close automatically.

A particularly favorable design results from the fact that the safety valve has a screw socket is screwed on its one end face into the valve part, the axes of the safety valve, of the plug-in housing and the valve part are in a line. To increase security and protection of the safety valve can be provided that the outlet holes of the safety valve in the Distance are surrounded by a protective sleeve attached to the connector housing, which is also the elongated Safety valve itself covers essential parts.

In the case of a hand-held version with partly commercially available elements, it is provided that the Shut-off element is designed as a manual valve that carries a manometer at one end of the handle that can be connected to a pressure supply

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control valve is connected and the other end of the handle is connected to the compressed gas connection via a piece of hose.

Further features of the invention emerge from the subclaims, details are based on the Drawing, which represents an example embodiment, explained in more detail. Show it:

Fig. 1 is a view of a structural unit

for pressurized gas filling without the one with the connection nipple

connected valve part,

Fig. 2 is a longitudinal section through the

Device part with the plug-in housing, which is on the connection nipple attached valve part

and the safety valve after a coupling carried out between the plug-in housing and Valve part,

Fig. 3 is a section through a ver

locking screw for the plug housing,

4 shows a section through a locking nut for the valve part.

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The filling device is essentially composed of a pressure control valve 1, a shut-off device 2, a manometer 3, a piece of hose 4, a plug-in housing 5 and one with the plug-in housing 5 couplable valve part 6, which is connected to a connection nipple 7 of a cushion, not shown in detail can be connected in a gastight manner.

The pressure control valve, which is matched to the passages in the plug-in housing 5 and valve part 6 in terms of pressure and output 1 is of the usual type, it has a connection piece 8 for a line or the like. That to a pressurized gas system, e.g. a compressor. It reduces the pressure e.g. from 10 bar to 5 bar. When connecting to a pressurized gas cylinder with e.g.

200 bar, an additional pressure reducer must be provided. The pressure control valve 1 is with a further connecting piece 9 connected to one end of a handle 10 of a manual valve, which is the shut-off device 2 gives up. The manometer 3 is calibrated and provided with a protective cap an actuating lever 11 and is connected to the hose section 4 via a connection 12, its other free end to a compressed gas connection 13 in the form of a screw-in nipple 14 of the

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Plug housing 5 is placed gas-tight.

The plug-in housing 5 has on its one end face a deep recess 15 with a sealing cone 16, the base of this recess 15 is above a bore 17 is connected to the screw-in nipple 14. On the other face is also a recess 18 with an internal thread 19, the recesses 15 and 18 are over a bore 20 connected to one another. The hole 20 is provided on one side with an internal thread 21 into which a hollow pin 22 is screwed in, which has a seat cone 24 at its free end as an actuating surface 23 and the one on its outside with a Sealing cone 25 is provided, which has a recess 26 for a sealing ring 27 carries. In a similar way, a recess 28 is also made in the sealing cone 16, in which a sealing ring 29 is recorded. On the side of the recess 15

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the plug housing 5 is surrounded by a union nut 30 which has an internal thread on its free side 31 carries. At the bottom of the recess 15, a further beta surface 33 protrudes as a collar 32.

The valve part 6 also has a sealing cone 34 on one side; a recess 35 is provided on this end face, into which the tappets 36 of three valves 37 distributed over the circumference in the form of valve inserts 38 protrude. The valve inserts 38 are conventional hose valves, and the tappets 36 are pressed outward by springs (not shown in detail). On the opposite side there is a deep internally threaded bore 39 from which discharge openings 40 are guided radially outward and on the bottom of which a sealing ring 41 is supported. A central bore 42 connects the recess 35 with the internally threaded bore 39, a sleeve 44 is screwed into an internal thread 43 as part of a pressure valve 45, which penetrates at a distance through the base of the internally threaded bore 39 and the sealing ring 41 and is flush with one end of the valve part 6 completes. In the sleeve 44 there is a valve seat 46, against which a valve cone 47 is pressed by a spring 48 which is attached to a screw 49

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supports. A tappet 50 extends from the side of the valve cone 47 opposite the spring 48, which ends in a needle tip 51 which is received in the seat cone 24. An external thread 52 is Surrounded at a greater distance by a grip ring 53, which on its outside with hips or the like. for a non-slip detection is provided. The valve part 6 is via the internal thread 54 of the internal thread bore 39 can be screwed onto the connection nipple 7 until its End face 55 stands up on sealing ring 41. In the transition into the recess 35 is a sealing cone arranged.

A screw socket 57 of a safety valve 58 is screwed into the internal thread 19 of the recess 18, two sealing cones 59, 60 come to rest against one another. The safety valve 58 is constructed in the usual way. Against a valve seat 61 is a üichtscheibe 62, which in a Sliding element 63 is arranged. The displacement element 63 is supported by a P'eder 64, which is attached to an adjusting screw 65 is supported, pressed against the screw socket 57. In the vicinity of the Valve seat 61 are outlet bores 66, a bore 67 merges into the bore 20 of the Plug-in housing 5.

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A protective sleeve 68 is pushed onto the outer circumference of the plug-in housing 5 and is secured by a screw 69 is held and the compressed gas connection 13 receives in a slot 70. The protective sleeve 68 directs the air jet which may emerge from the outlet bores 66 and is covered in a protective manner the essential parts of the safety valve 58. The axes 71,72 of the safety valve 58 and the Valve part 6 and the plug housing 5 are in a line.

In the state shown in FIG. 2, the plug-in housing 5 is coupled to the valve part 6. The connector housing 5 is via the hose section 4, the shut-off device 2 and the pressure control valve 1 with the pressure supply source connected, the valve part 6 is attached to the connection nipple 7. The pillow or the like, not shown in detail. can now from the Pressurized gas supply ago pressurized gas are supplied when the operating lever 11 of the manual valve is pressed, because when coupling the plug-in housing and the valve part 6, the plungers 50 and 36 are pushed back by the actuating surfaces 23 and 33, so that the valves 45 and 37 are open.

The compressed gas flows through the pressure control valve 1, the shut-off device 2, the hose section 4, the compressed gas

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connection 13, the bore 17 and the valves 37 on the outside of the sleeve 44 via the connection nipple 7 in the pillow, not shown in detail. The interior of the cushion stands above the open valve cone 47 of the pressure valve 45, the hollow pin 22 and the bores 20,67 with the safety valve 58 in Connection that is set so that it opens at a pressure of 0.6 bar. This guarantees that the pressure in the cushion cannot rise above this value. The coupling nut is used for the coupling 30 of the plug-in housing 5 is screwed onto the external thread 52 of the valve part 6, the penetrates Screw part into a recess 73 of the grip ring 53.

After filling, the plug-in housing 5 and the valve part 6 are separated from one another, i.e. the union nut 30 is unscrewed. The actuating surfaces 23, 33 move away from the tappets 50, 36 so that the valves 45 and 37 close. During the uncoupling, the interior of the cushion is exposed to the outside sealed. Instead of the plug-in housing 5, a locking nut is placed on the external thread 52 of the valve part 6 74 screwed on, the plunger 36 and

6th
50 covers and protects the valve part. In a similar way, the plug housing 5 is covered with a special screw plug 75 (Fig. 3),

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the union nut 30 with its internal thread 31 is screwed onto the external thread · / <j. This screw plug 75 also carries a grip ring 77 which covers the external thread 76 while leaving a gap.

For the venting unit: of the cushion, the valve part 6 is unscrewed somewhat from the connection nipple 7, while the end face 55 detaches itself from the sealing ring 41 and reaches the area of the drainage openings 40 so that the compressed air can blow off. Before refilling, the locking nuts 74 or the locking screw 75 must be loosened and then the plug-in housing 5 must be coupled to the valve part 6.

The structural unit: pressure control valve 1, shut-off device 2 and Plug-in housing 5 can be interconnected in any way, adapted to the intended use or the type of construction of the individual elements. The succession in the compressed gas flow direction can as indicated in Fig. 1 can be selected, but it can also be the pressure control valve 1 directly on the Plug housing 5 be connected and the shut-off device 2 can sit further forward. Likewise can the shut-off device 2 must be coupled directly to the plug-in housing 5 and the pressure regulating valve 1

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can be connected via a hose at a completely different location. The pressure gauge 3 can also be provided on the pressure control valve 1 instead of on the shut-off device 2.

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Claims (23)

Claims l / pressurized gas filling device for pillows and the like., thereby characterized in that a connection nipple (7) of the pillow or the like. a valve part (6) can be screwed on is that with a plug housing (5) to which a safety valve (58) is connected and that with a compressed gas connection (13) is provided, can be coupled and that the valves (37, 45) in the coupling of the valve part (6) can be actuated in such a way that between the compressed gas connection (13) and the cushion or the like. on the one hand and between the cushion and the safety valve (58) on the other hand a connection is created. 2. Device according to claim 1, characterized in that that the valve part (6) has an internal thread (54) for screwing onto the connection nipple (7), on A sealing ring (41) is inserted at the base of the internally threaded bore (39), against which the end face (55) of the connection nipple (7) can be pressed and in the area of the internally threaded bore (39) drainage openings (40) are provided. 130023/0123 Lorch 2603 070 ORIGINAL INSPECTED 3. Apparatus according to claim 1, characterized in that the valve part (G) and the plug housing (5) Wear cones (34, 16) which interact with one another and in a recess (28) of a sealing cone (34) a sealing ring (29) is arranged. 4. Apparatus according to claim 1, characterized in that the valve part (6) and the plug housing (5) can be pulled together by a union nut (30) are. 5. Apparatus according to claim 4, characterized in that the valve part (6) has an external thread (52), onto which the union nut (30) with an internal thread (31) can be screwed and the external thread (52) is covered by a grip ring (53) which is provided with a recess (73), in which the screw part of the union nut (30) finds place. 6. Apparatus according to claim 1, characterized in that that the valve part (6) has a plurality of valve inserts (38) distributed over the circumference for the Connection between the compressed gas connection (13) and the cushion and in the center a pressure valve (45) Lorch 130Ö23 / 0 123 ^{2603 07} ° is arranged for the connection of the cushion and the safety valve (58). 7. Apparatus according to claim 6, characterized in that that the valve inserts (38) and the pressure valve (45) carry plungers (36,50) and the plug-in housing (5) is provided with actuating surfaces (23,33) that are used when coupling the plug-in housing (5) and The valve part (6) press the tappets (36,50) back against the springs and open the passage. 8. Apparatus according to claim 7, characterized in that that the valve part (6) has a recess on its end face facing away from the connection nipple (7) (35) into which the tappets (36) of the valve inserts (38) protrude and the tappets (50) of the Pressure valve (45) ends in a bore (42) and the actuating surfaces (23,33) of the plug-in housing (5) for the tappets (36) of the valve inserts (38) from a collar (32) and for the tappet (50) of the pressure valve (45) consist of a hollow pin (22). 9. Apparatus according to claim 8, characterized in that that the plunger (50) of the pressure valve (45) in the form of a needle point (51) and the actuator surface (23) of the plug-in housing (5) in the form of a 130023/0123 Lorch 2603 070 fcinsitzkonus (24) are held. 10. The device according to claim 8, characterized in that the hollow pin (22) in an internal thread (21) screwed into the bore (20) of the plug-in housing (5) and next to the actuation surface (23) for the plunger (50) of the pressure valve (45) has a sealing cone (25) which is connected to a sealing cone (56) cooperates in the valve part (G). 11. The device according to claim 10, characterized in that that one of the sealing cones (25, 56) has a recess (26) for receiving a sealing ring (27). 12. Apparatus according to claim 2 and 6, characterized in that the pressure valve (45) consists of an in the valve part (6) consists of a screwed-in sleeve (44) which is located in the space of the internally threaded bore (39) extends inside a valve seat (46) for a valve cone (47) and carries the valve cone (47) on the seat (46) via a spring (48) supported by a screw (49) is pressed and from the valve cone (47) on the side of the spring (48) opposite the The plunger (50) goes out. 130023/0123 Loren 2603 070 13. The device according to claim 8, characterized in that the recess (35) via a bore (17) is connected in the plug-in housing (5) to the compressed gas connection (13). 14. The device according to claim 1, characterized in that that the compressed gas connection (13) is designed as a screw-in nipple (14). 15. The device according to claim 1, characterized in that the safety valve (58) with a screw connector (57) is screwed into the plug-in housing (5) on its one end face. 16. The device according to claim 15, characterized in that that the safety valve (58) and the plug housing (5) interacting sealing cones (59,60) have. 17. The device according to claim 15, characterized in that the axes (71,72) of the safety valve (58), the plug-in housing (5) and the valve part (6) lie in a line. Lorch 2603 070 130023/0123 18. The device according to claim 1, characterized in that the safety valve (58) is a sliding element (63) has a sealing washer (62), the sliding element (63) under the influence of a spring (64) which is supported on an adjusting screw (65) and which the sealing washer (62) presses against a valve seat (61) and in the vicinity of the valve seat (61) there are outlet bores (66) are provided. 19. The device according to claim 18, characterized in that the outlet bores (66) at a distance of a protective sleeve (68) attached to the plug-in housing (5), which surrounds the elongated safety valve (58) covers to a large extent. 20. The device according to claim 1, characterized in that the plug housing (5) with a screw plug (75) can be closed on the side opposite the safety valve (58) and this Closure screw (75) is cup-shaped, provided with a fixing chain (78) and spaced apart from the external thread (76) is surrounded by a grip ring (77). Lorch 2603 070 130023/0123 21. The device according to claim 1, characterized in that the valve part (6) on the connecting nipple (7) opposite side by a cup-shaped, provided with a fixing chain (78) Lock nut (74) can be covered. 22. The device according to claim 1, characterized in that a pressure control valve (1), a shut-off element (2) and the plug-in housing (5) connected to its compressed gas connection (13) to form a structural unit are. 23. The device according to claim 22, characterized in that the shut-off element (2) is designed as a manual valve is, which carries a pressure gauge (3), at one end of the handle that with a pressure supply connectable pressure control valve (1) is included and that at the other end of the handle is connected to the compressed gas connection (13) via a hose piece (4). Lorch 2603 070 130023/0123