EP4626716A1 - Luftfederungs- und liftachsanlage eines anhängerfahrzeugs - Google Patents
Luftfederungs- und liftachsanlage eines anhängerfahrzeugsInfo
- Publication number
- EP4626716A1 EP4626716A1 EP23801710.7A EP23801710A EP4626716A1 EP 4626716 A1 EP4626716 A1 EP 4626716A1 EP 23801710 A EP23801710 A EP 23801710A EP 4626716 A1 EP4626716 A1 EP 4626716A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lifting
- bellows
- pressure
- lifting axle
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/052—Pneumatic spring characteristics
- B60G17/0523—Regulating distributors or valves for pneumatic springs
- B60G17/0526—Distributor units, e.g. for retractable wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/47—Means for retracting the suspension
- B60G2204/4702—Means for retracting the suspension pneumatically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2300/00—Indexing codes relating to the type of vehicle
- B60G2300/04—Trailers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/20—Spring action or springs
- B60G2500/203—Distributor valve units comprising several elements, e.g. valves, pump or accumulators
Definitions
- the invention relates to an air suspension and lifting axle system of a trailer vehicle, which has several vehicle axles arranged one behind the other in its longitudinal extension and each of which is air-suspended via supporting bellows, one of these vehicle axles being designed as a lifting axle that can be raised and lowered by means of a lifting bellows.
- This air suspension and lifting axle system has an air suspension valve and a lifting axle valve, to which connecting lines leading to the supporting bellows of the vehicle axles and to the lifting bellows of the lifting axle are connected.
- the air distributor is flanged to the housing of the lifting axle valve, wherein the output connection for the bellows pressure PB, the input connection for the support pressure p? and the input connection for the lifting pressure pH of the air distributor are each directly connected to the input connection for the bellows pressure PB, the output connection for the support pressure p? and the output connection for the lifting pressure pH of the lifting axle valve, respectively.
- FIG. 2 the first embodiment of the air suspension and lifting axle system with a second embodiment of a lifting axle valve and an air distributor according to the invention in a schematic overview
- FIG. 3a the lifting axle valve and the air distributor according to Fig. 3 in a schematic representation
- FIG. 4 the first embodiment of the air suspension and lifting axle system with the third embodiment of the lifting axle valve and the air distributor according to the invention in a schematic overview
- Fig. 5 shows the second embodiment of an air suspension and lifting axle system with a known design of a lifting axle valve and connecting lines leading to supporting bellows and lifting bellows in a schematic overview
- the invention is based on a known air suspension and lifting axle system 2.5, 2.6 of a trailer vehicle, which are each shown by way of example in the schematic
- the air suspension and lifting axle system 2.5, 2.6 has several vehicle axles 4, 6, 8 arranged one behind the other in the longitudinal extension of the trailer vehicle, each air-sprung via supporting bellows 16a, 16b; 18a, 18b; 20a, 20b.
- One of these vehicle axles is designed as a lifting axle 8 that can be raised and lowered by means of a lifting bellows 22a, 22b.
- the trailer vehicle according to Fig. 5 therefore has three vehicle axles 4, 6, 8 arranged one behind the other in its longitudinal extension, which are each air-suspended via two supporting bellows 16a, 16b; 18a, 18b; 20a, 20b relative to a vehicle body not shown in more detail.
- the rear vehicle axle as seen in the forward direction of travel, is designed as a lifting axle 8 and can be raised and lowered in relation to a travel path level by means of two lifting bellows 22a, 22b.
- the air suspension and lifting axle system 2.5 of the trailer vehicle has a "supply" coupling head (red) 10, a "brake” coupling head (yellow) 12 and a trailer brake module 14, which are assigned to a compressed air brake system not shown in more detail.
- a supply pressure pv is introduced into the trailer brake module 14 from the “supply” coupling head (red) 10.
- a brake control pressure is fed into the trailer brake module 14 from the “brake” coupling head (yellow) 12.
- the trailer brake module 14 has a trailer brake valve, a brake pressure modulator (ALB controller), a pressure sensor and an electronic control unit, which are not shown.
- the functionality of the trailer brake module 14 is only of interest in the present case insofar as the loading state of the trailer vehicle is determined by measuring the bellows pressure PB in the supporting bellows 16a, 16b; 18a, 18b; 20a, 20b of the vehicle axles 4, 6, 8 using the pressure sensor. With the bellows pressure PB as input variable, the brake pressure in the wheel brakes of the vehicle axles 4, 6, 8 in the brake pressure modulator (ALB controller) is adapted to the loading condition of the trailer vehicle.
- the air suspension and lifting axle system 2.5 has, in addition to the supporting bellows 16a, 16b; 18a, 18b; 20a, 20b of the vehicle axles 4, 6, 8 and the lifting bellows 22a, 22b of the lifting axle 8, an air suspension valve 24, a lifting and lowering valve 26 integrated into or flanged to it, a level control valve 28 and a lifting axle valve 30. Since although the air suspension valve 24 and the lifting axle valve 30 are both controlled by the electronic control unit of the trailer brake module 14, the air suspension valve 24 and the lifting axle valve 30 are each connected to the trailer brake module 14 via an electrical control line 32, 34.
- a supply line 36 under the supply pressure pv is also led from the trailer brake module 14 to the air suspension valve 24, of which a first line branch 36a is connected to the level control valve 28 and a second line branch 36b is connected to an input connection E1 of the lifting axle valve 30.
- a bellows pressure required to maintain a set chassis level is set in the level control valve 28 and introduced into the air suspension valve 24 via a connecting line 38.
- the bellows pressure pe which is modulated as required, is fed in a first chain of three connecting lines 40a, 40b, 40c into the right-hand supporting bellows 16a, 18a of the non-liftable vehicle axles 4, 6, as seen in the forward direction, and to an input connection of the trailer brake module 14.
- the bellows pressure PB which is modulated as required, is fed from the air suspension valve 24 in a second chain of three connecting lines 42a, 42b, 42c into the left-hand supporting bellows 16b, 18b of the non-liftable vehicle axles 4, 6 and to an input connection E2 of the lifting axle valve 30.
- the lifting and lowering valve 26 can be operated manually and is used to lower and raise the vehicle body when the vehicle is stationary, for example to facilitate loading and unloading of the trailer vehicle or to adapt the vehicle floor to a loading ramp.
- a first central connecting line 44 carrying a support pressure p? is led to the lifting axle 8 and from there via two line branches 44a, 44b to the supporting bellows 20a, 20b of the lifting axle 8.
- a second central connecting line 46 carrying a lifting pressure PH is led to the lifting axle 8 and from there via two line branches 46a, 46b to the lifting bellows 22a, 22b of the lifting axle 8.
- the air suspension and lifting axle system 2.6 according to Fig. 6 differs from the air suspension and lifting axle system 2.5 just described according to Fig. 5 only in that instead of the level control valve 28, a chassis sensor 48 is provided, which is connected to the trailer brake module 14 via an electrical sensor line 50.
- the chassis sensor 48 generates a travel signal corresponding to the distance between the vehicle body and a vehicle axle 4, which is transmitted via the sensor line 50, the electronic control unit of the trailer brake module 14 and the aforementioned control line 32 to the air suspension valve 24' and is used there to set a suitable bellows pressure PB.
- the connecting lines 40a, 40b; 42a, 42b; 44, 44a, 44b; 46, 46a, 46b for the supporting and lifting bellows 16a, 16b; 18a, 18b; 20a, 20b; 22a, 22b are laid out in a confusing manner and sometimes cross each other. This can lead to problems when connecting these connecting lines 40a, 40b; 42a, 42b; 44, 44a, 44b; 46, 46a, 46b to the air suspension valve 24, 24' or to the lifting axle valve 30, for example during the manufacture of the trailer vehicle or during a later replacement of one of the valves 24, 24', 30. If faults or malfunctions occur, locating a defective component with connecting lines 40a, 40b; 42a, 42b; 44, 44a, 44b; 46, 46a, 46b laid in this way is relatively difficult and time-consuming.
- the lifting axle valve 52, 52', 52" are each assigned an air distributor 54, 54', 54", which has so many output connections A2a, A2b; A2c, A2d; A3a, A3b; A4a, A4b that a separate connecting line 56a, 56b; 58a, 58b; 60a, 60b; 62a, 62b is led from each of the output connections to one of the supporting bellows 16a, 16b; 18a, 18b; 20a, 20b of the vehicle axles 4, 6, 8 and to one of the lifting bellows 22a, 22b of the lifting axle 8.
- the output connections A2a, A2b; A2c, A2d; A3a, A3b; A4a, A4b for the supporting and lifting bellows 16a, 16b; 18a, 18b; 20a, 20b; 22a, 22b of the vehicle axles 4, 6, 8 are arranged symmetrically on the air distributor 54, 54', 54" in such a way that the illustrated, symmetrical and crossing-free laying of the connecting lines 56a, 56b; 58a, 58b; 60a, 60b; 62a, 62b leading to the supporting and lifting bellows 16a, 16b; 18a, 18b; 20a, 20b; 22a, 22b is realized.
- the air distributor 54 is arranged closely adjacent to the lifting axle valve 52 and has an inlet connection E2' and an outlet connection A2' for the bellows pressure PB, an inlet connection E3 for the support pressure PT of the support bellows 20a, 20b of the lifting axle 8 and an inlet connection E4 for the lifting pressure pn of the lifting bellows 22a, 22b of the lifting axle 8.
- the input connection E2' for the bellows pressure pe is connected via a connecting line 42 to the associated output connection of the air suspension valve 24'.
- the output connection A2' for the bellows pressure PB is connected via a connecting line 66 to the associated input connection E2 of the lifting axle valve 52.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022131513.4A DE102022131513A1 (de) | 2022-11-29 | 2022-11-29 | Luftfederungs- und Liftachsanlage eines Anhängerfahrzeugs |
| PCT/EP2023/080612 WO2024115036A1 (de) | 2022-11-29 | 2023-11-02 | Luftfederungs- und liftachsanlage eines anhängerfahrzeugs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4626716A1 true EP4626716A1 (de) | 2025-10-08 |
Family
ID=88731397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23801710.7A Pending EP4626716A1 (de) | 2022-11-29 | 2023-11-02 | Luftfederungs- und liftachsanlage eines anhängerfahrzeugs |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4626716A1 (de) |
| CN (1) | CN120225371A (de) |
| DE (1) | DE102022131513A1 (de) |
| WO (1) | WO2024115036A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19546324C2 (de) * | 1995-12-12 | 1998-10-29 | Grau Gmbh | Steuerblock für eine Luftfederungsanlage |
| DE102006040950A1 (de) | 2006-08-31 | 2008-03-06 | Wabco Gmbh | Pneumatisches Modul |
| DE102008047801B3 (de) | 2008-09-17 | 2010-01-14 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Vorrichtung zur Steuerung von pneumatischen Einrichtungen eines Anhängers |
| DE102011051505C5 (de) * | 2011-07-01 | 2023-09-07 | Haldex Brake Products Aktiebolag | Niveauregelventileinheit mit integriertem Verteiler |
-
2022
- 2022-11-29 DE DE102022131513.4A patent/DE102022131513A1/de active Pending
-
2023
- 2023-11-02 WO PCT/EP2023/080612 patent/WO2024115036A1/de not_active Ceased
- 2023-11-02 CN CN202380081692.4A patent/CN120225371A/zh active Pending
- 2023-11-02 EP EP23801710.7A patent/EP4626716A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022131513A1 (de) | 2024-05-29 |
| WO2024115036A1 (de) | 2024-06-06 |
| CN120225371A (zh) | 2025-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP4058334B1 (de) | Elektropneumatisches steuermodul | |
| EP4061678B1 (de) | Bremssystem mit sicherer notstoppfunktion und verfahren hierzu | |
| EP4069559B1 (de) | Monostabil und fehlertolerant ausgelegte feststellbremsventilanordnung | |
| DE102008047632A1 (de) | Feststellbremsanlage | |
| EP3840992B1 (de) | Elektronisch gesteuertes pneumatisches bremssystem und verfahren zum steuern eines elektronisch gesteuerten pneumatischen bremssystems | |
| DE19706982C2 (de) | Bremsanlage zur Steuerung der Bremsung eines Anhängerfahrzeuges | |
| DE102011051505B4 (de) | Niveauregelventileinheit mit integriertem Verteiler | |
| EP2168788A1 (de) | Vorrichtung und Verfahren zum Durchführen einer Radstandregelung für Nutzfahrzeuge | |
| EP4069561A1 (de) | Elektrisch steuerbares pneumatisches bremssystem mit einem zweikanaligen druckmodulatorsystem | |
| EP3774403B1 (de) | Reifendruckregulierungseinrichtung eines luftbereiften off-highway-fahrzeugs | |
| EP4440893A1 (de) | Ausfallsicheres redundantes bremssystem mit druckeinspeisung über einen entlüftungspfad des primären modulators | |
| EP1060966A2 (de) | Anhängerbremsventil für blockiergeschützte Druckluftbremsanlagen von Anhängern | |
| EP3354488B1 (de) | Reifendruckregulierungsanlage | |
| WO2022122433A1 (de) | Druckluftbremsanlage eines zugfahrzeugs | |
| DE102023136451A1 (de) | Betriebsbremsentlüftungseinheit für eine betriebssichere Feststellbremsanordnung | |
| WO2024115036A1 (de) | Luftfederungs- und liftachsanlage eines anhängerfahrzeugs | |
| EP1647425B1 (de) | Steuervorrichtung für eine Luftfederungsanlage für ein Kraftfahrzeug | |
| DE102018115340B4 (de) | Chassis-Luftfederungseinrichtung zur Abstützung eines Chassis eines Nutzfahrzeugs an einem Fahrwerk einschließlich Niveauregelung | |
| EP4396050B1 (de) | Anhängersteuerventil eines zugfahrzeugs | |
| DE10221079B4 (de) | Antiblockiersystem für ein Radfahrzeug | |
| DE102022134255B3 (de) | Elektropneumatische Betriebsbremseinrichtung für ein Fahrzeug | |
| EP3774464B1 (de) | Elektro-pneumatischer achsmodulator mit direkt gesteuerten ventilen | |
| WO2025131583A1 (de) | Elektropneumatische feststellbremseinrichtung mit parallelen entlüftungspfaden | |
| WO2020160902A1 (de) | Bremse für schienenfahrzeuge, bremssteuergeräteanordnung und verfahren zum steuern einer bremssteuergeräteanordnung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20250514 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |