SE506892C2

SE506892C2 - Coupling device for a plurality of fluid hoses between a towing vehicle and a towing vehicle

Info

Publication number: SE506892C2
Application number: SE9504033A
Authority: SE
Inventors: Henry Helsing
Original assignee: Ssab Tunnplaat Ab
Priority date: 1995-11-14
Filing date: 1995-11-14
Publication date: 1998-02-23
Also published as: SE9504033D0; AU7660396A; SE9504033L; WO1997018099A1

Abstract

Compressed air hoses and hydraulic hoses (33, 34) for actuating various devices on a trailer are automatically coupled together since the tractor (11) and the trailer (13) have two corresponding valve blocks (30, 25) with corresponding valves and the valve block (30) of the tractor is moved against the valve block (25) of the trailer. The valve block (25) of the trailer is turnable and it has the same axis of turning as the trailer on the tractor. Means (50, 51) arranged in connection with the valve block (30) of the tractor is arranged to turn the valve block (25) of the trailer right and to guide the valve blocks before their valves (55, 56) are coupled.

Description

506 892 lat till dragfordonets ventilblock 30 har givits beteckningen 34. Slangama kan vara tryck- luftsslangar för släpfordonets tryckluftbromsar och hydraulslangar for att exempelvis man- övrera tippning, skyddshuvar över lasten etc, beroende på vilken typ av last som släp- fordonet är anpassat för. 506 892 lat to the valve block 30 of the towing vehicle has been designated 34. The hoses can be compressed air hoses for the trailer's compressed air brakes and hydraulic hoses to, for example, tip over, protective hoods over the load, etc., depending on the type of load the trailer is adapted for.

Figurerna 3 och 4 visas i mera detalj dragbilens ventilblocks 30 montering på armen 28.Figures 3 and 4 show in more detail the mounting of the tractor block valve 30 on the arm 28.

Armens yttre del har en fästplatta 35. En kort styrbalk 36 med rektangulärt tvärsnitt är axiellt glidbart monterad på fåstplattan 35 medelst fästen 37, 38. Ventilblocket 30 har fyra främre slidblock 39 - 42 och fyra bakre glidblock 43 - 46, medelst vilka det är glidbart styrt i styrblocket 36. En gasfjäder 47 kopplad mellan styrbalken 36 och ventilblocket 30 och strävar efter att trycka fram styrbalken 36 relativt ventilblocket 30 _till ändläget i vilket styrbalken 36 visas i figurerna 3 och 4. En hydraulcylinder 48 är kopplad mellan ett fäste 49 på armen 28 och ventilblocket 30.The outer part of the arm has a mounting plate 35. A short guide beam 36 with a rectangular cross-section is axially slidably mounted on the mounting plate 35 by means of the brackets 37, 38. The valve block 30 has four front slide blocks 39-42 and four rear slide blocks 43-46, by which it is slidable guided in the guide block 36. A gas spring 47 coupled between the guide beam 36 and the valve block 30 and strives to push the guide beam 36 relative to the valve block 30 to the end position in which the guide beam 36 is shown in Figures 3 and 4. A hydraulic cylinder 48 is connected between a bracket 49 on the arm 28 and the valve block 30.

När dragfordon och släpfordon kopplats samman mekaniskt, falls armen 28 ned från ett upprätt läge till läget visat i figur 3. Med hjälp av hydraulcylindern 48 skjuts dragbilens ventilblock 30 fram mot släpfordonets ventilblock 25. Den främre kanten 50 på styrbalken 36 kommer att ingripa med en motsvarande yta 5l på släpfordonets ventilblock 25 så att detta vrider sig till att bli koaxiellt med ventilblocket 30. Styrblocket 36 tar således stöd mot ventilblocket 25, medan Ventilblocket 30 fortsätter framåt motverkan av gasfjädern 47, så att två styrpinnar 51 med koniska ändar styr in i motsvarande hål 53 på ventil- blocket 25 och ﬁnjusterar relativa läget mellan ventilblocken, innan ventilblockens ventiler kopplas ihop parvis. Dragfordonets ventiler 54 har utskjutande cylindriska ändar 55 (endast en ventil är markerad) som passar in i och tätar mot motsvarande borrningar 56 i släpfordonets ventiler 57 (endast en ventil är markerad), Båda samverkande ventilema 54, 56 öppnas automatiskt vid sammankopplingen och stängs igen automatiskt vid isärkopp- ling. Ventilerna är konventionella och beskrivs ej i detalj.When the towing vehicle and trailer are mechanically coupled, the arm 28 falls down from an upright position to the position shown in Figure 3. By means of the hydraulic cylinder 48, the valve block 30 of the towing vehicle is pushed towards the valve block 25 of the trailer. The leading edge 50 of the guide beam 36 will engage a corresponding surface 51 on the valve block 25 of the trailer so that it rotates to become coaxial with the valve block 30. The guide block 36 thus takes support against the valve block 25, while the valve block 30 continues forward counteracting the gas spring 47, so that two guide pins 51 with conical ends guide into corresponding holes 53 on the valve block 25 and ﬁ adjust the relative position between the valve blocks, before the valves of the valve blocks are connected in pairs. The towing vehicle valves 54 have projecting cylindrical ends 55 (only one valve is marked) which fit into and seal against corresponding bores 56 in the trailer valves 57 (only one valve is marked). Both cooperating valves 54, 56 open automatically at the connection and close again automatically when disconnecting. The valves are conventional and are not described in detail.

Claims

A coupling device for a plurality of vacuum hoses (33, 34) between a towing vehicle (11) and a trailer (13), the trailer having a valve block (25) having the same geometric axis of rotation (I) as the trailer of the towing vehicle, and the towing vehicle (11) has a corresponding valve block (30) which is axially displaceable for coupling to the valve block (25) of the trailer, characterized by means (36, 50) axially limited movable relative to the valve block (30) of the towing vehicle and ﬁ spring-loaded in the coupling direction to engage the means (51) arranged in connection with the valve block (25) of the trailer and the angular valve block (25) of the trailer before the valve blocks are connected.

Coupling device, according to claim 1, characterized by guide pins (51) for adjusting the mutual position of the valve blocks transversely after the valve block (25) of the trailer has been angled.

Coupling device, according to any one of the preceding claims, characterized in that the valve block (25) of the trailer has the same geometric axis (I) as a towing bolt (19) on the trailer arranged to engage with a turntable (12) on the towing vehicle.

Coupling device, according to one of the preceding claims, characterized in that the valve block (30) of the towing vehicle (11) is mounted on a collapsible arm (28) which has a striking rest position and a coupling position.