TR201904137A2 - LIFTING THE AXLE RELATED TO THE STEERING ANGLE INFORMATION TO REDUCE THE TURNING RADIUS OF MULTI-AXLE HEAVY LOAD VEHICLES IN THE FIELD CONDITIONS - Google Patents

Abstract

Raise the axle of the rear axle (11) according to the vehicle weight (6), steering angle value (7) in order to increase the maneuverability of the axle (11) during the maneuver depending on the conditions of invention, load, ground and part strength ( 8) or the central gate control unit (1) that manages the axle below (9) commands, the weight value (6) and the steering angle value (7) reach the specified conditions 10, so the set time transition (10) of the axle (11) lift the axle (8) It is characterized by the fact that it contains an electronic air pressure unit (4) that enables it to be lifted and lowered with its command.

Description

DESCRIPTION RETURN OF MULTI-AXLE HEAVY DUTY VEHICLES IN OFF-ROAD CONDITIONS AXLE ON STEERING ANGLE INFORMATION TO REDUCE THE RADIUS REMOVAL Technical Area The present invention; on freight vehicles, it relates to the automatic lifting of the axle on the vehicle.

The invention is particularly designed to increase the turning capability of freight vehicles in off-road conditions; using the turn angle, speed information and load information, the relevant axle in the vehicle will be automatically It is related to a system that enables its removal.

Description of the State of the Art In vehicles, by raising the axle when there is no load, friction is reduced, tire life is increased, the vehicle the turn becomes easier, the vehicle accelerates better.

Axle lifting feature, after carrying a heavy load to a place with your vehicle, without your load. It provides a good ride on the way back. Reverse traction when your truck has no load To deactivate and upgrade, simply press a button on the dashboard. can be used. As soon as you load the truck, maximum traction and driving automatically lowers and reactivates to provide Traction axles are generally all-use due to the added friction and rolling resistance. consumes a lot of fuel during its lifetime. The situation can be avoided by lifting the axle. is being studied. By disengaging and raising the traction counter when not required, fuel consumption is reduced.

As with lifting an unloaded axle, this action narrows the angle of rotation. Significantly increases the maneuverability of the truck. Axle for handling and grip automatic removal is possible.

Many heavy-duty vehicles have an axle lift feature. However, axle lift systems, the steering position is not related to the lift function. Heavy load Since the working environments of off-road vehicles (mining, construction, etc.) are narrow areas, this The angle of rotation becomes an important phenomenon in areas. Therefore, axle lift systems need to be developed.

TR 2009/0853? In the patent application no. spring control system is mentioned. Lifting axles on heavy duty vehicles It is a different solution for the development of the feature.

Clarifying the Objects of the Invention Starting from the known state of the technique, the aim of the invention is to where the negativities are eliminated, the steering position and the lifting function The narrow space turning environment encountered by the heavy-duty vehicles to which it is associated a new axle lift system where problems are overcome by removing the respective axle is to be developed.

Another object of the invention is to meet the heavy-duty off-road vehicles in the working environment. reducing the turning angle by removing the related axle of the narrow space turning problem and increasing maneuverability.

Another purpose of the invention is the tire and axle that will be formed in the field by removing the axle. is to prevent wear and tear.

Another object of the invention is to ensure that the axle lifting process is combined with the designed algorithm. be independent of the driver and thus avoid undesired suspension failures. is protection.

Another object of the invention is to ensure that heavy commercial vehicles with more than two axles depending on the ground and part strength conditions, the rearmost axle during the maneuver is to improve maneuverability by raising it for a certain period of time.

Independent of the driver, according to the steering angle, to achieve the aforementioned purposes. A new axle lifting system has been developed that somehow automatically raises the axle.

Explanation of Figures Figure 1; It is the drawing of the vehicle communication line in a representative embodiment of the invention.

Figure-2; A drawing of the system algorithm in a representative embodiment of the invention.

Figure-3; In a representative embodiment of the invention is the drawing of the axis of traction.

Figure-4; A drawing of the steering angle sensor in a representative embodiment of the invention.

Figure-5; A drawing of an electronic air pressure unit in a representative embodiment of the invention.

Figure-6; Air suspension bellows drawing in a representative embodiment of the invention.

Figure-7; In a representative embodiment of the invention is a drawing of lifting air bellows.

Figure-8; Illustration of the jaw grip in a representative embodiment of the invention.

Figure-9; In a representative embodiment of the invention, when the rearmost axle is raised, the rotation is the plot of Ackermann angles where the radius is indicated to decrease.

Reference Numbers 1 Central gate control unit 15 Wheel hub 2 Chassis 16 Air cartridges 3 Steering angle sensor 17 Air valve outlets 4 Electronic air pressure unit 18 Air spring bellows CAN line 19 Control valve 6 Weight value 20 Air supply 7 Steering angle value 21 Wheels 8 Remove opposite 22 Teeth 9 Axles down 23 Pads Set time elapse 24 Chassis ports 11 Axle 25 Lift air bellows 12 Differential box 26 Lift axle rotation axis 13 Input shaft 27 Turning radius 14 Suspension Detailed Description of the Invention The aim of the inventive system is to load heavy commercial vehicles with more than two axles, depending on the ground and part strength conditions, the rearmost axle during the maneuver (11) is to improve maneuverability by raising it for a certain period of time. This The system in question consists of both mechanical and electronic systems on the vehicle. are used.

When examining the load transport of a heavy vehicle with more than two axles, the technical problems appear. Stupid. on vehicles to which the wheels (21) are attached, the vehicle Having the ability to direct and/or drive according to the position it is on, These are the parts whose main purpose is to distribute the loads to the wheels (21).

For the aforementioned patent, the front axle is not driven and the rear two axles are driven. (Figure-3) describes the system on a 3-axle vehicle.

The rearmost axle is manually liftable and its drive is cuttable. heavy vehicles In order to be able to lift the rearmost axle in vehicles, on the rearmost axle, given in figure-7. There are lifting air bellows (25) as seen in the drawing. Two in heavy vehicles type air bellows can be found, the first of which is placed to increase comfort and durability. air suspension bellows (18), the other one used to lift the axles air bellows (25). Electronic air pressure seen in the drawing given in Figure-Side Air lifting bellows are pressurized with the compressed air coming from the unit (4). the desired axle is lifted up. Air cartridges (16) and air valve outlets (17) air passage is provided over it.

In order to eliminate the inertia of the raised axle to the engine at the end of this process, the drive must be cut off. The action to be taken to cut the drive is with the jaws. is to separate the grasp. Jaw clutch is a tight fit in the clutch system in automobiles. unlike clutch discs. As shown in figure-8, the teeth standing opposite each other and clutch that allows two discs to be brought closer to each other and locked naturally system. There are teeth (22) and pad (23).

In this way, any loss that may occur in the transfer of torque is prevented. After the rearmost axle is raised and its drive is cut off, the vehicle It has both more efficient and shorter effective wheelbase in terms of fuel. In two-axle vehicles, the effective wheelbase corresponds to the actual wheelbase, i.e. two-axle is equal to the distance between In vehicles with more than two axles, kinematics account is changing. In our example vehicle, the steering axis is at the front, and the reverse is at the rear. If it is thought that there are two traction axles close to each other, the effective wheelbase is at the front. It is calculated based on the point that coincides with the middle of the axle and the two rearmost axles.

In the case where the rearmost axle is lifted by air and its contact with the road is lost, the rearmost axle is the point will coincide with the ground contacting and middle axle and the effective axle will be distance will be shortened. In this case, the turning radius (27) of the vehicle will be improved.

In order for this whole system to work, steering angle and load condition are also part of it. An equation has to be created. This equation is shown in figure 2. A system algorithm such as According to the system algorithm, the system water it works like this: The first step to be taken is to determine the weight value (6) of the load of the vehicle.

If the laden weight of the vehicle exceeds a certain percentage of the maximum permissible (eg 90%), damage to suspension parts (eg air bellows) The rearmost/trailer axle must be in contact with the ground in all circumstances, so as not to

If the loaded weight of the vehicle is below the specified ratio, the steering angle value (7) is passed to the control step. As can be seen in Figure-4, the steering angle value (7) is measured by the steering angle sensor (3) connected to the steering column.

As a result of the measurement, the steering angle value (7) is determined by the steering angle sensor (3). It is sent as a signal to the in-vehicle communication line where it is located.

In-vehicle communication line, called CAN (controllable area network) line (5), 2 pcs. A communication system that aims to connect many electronic control units with a cable. is the line. Angle information from the steering angle sensor (3) using the CAN line (5) to the electronic air pressure unit (EAPU (electronic air pressure unit) shown in figure-5. unit)) (4) is sent. The electronic air pressure unit (4), reaching it using the vehicle total weight (6) information and the steering wheel angle value (7) information, how the lift axle behaves to increase the vehicle's maneuverability Electronic air pressure unit (4) if all conditions are satisfied the required amount of air into the lifting air bellows (25) of the lifting axle (11). It will provide the pressure and cause the axle to be lifted.

In addition, the electronic air pressure unit (4), the jaw clutch control unit are also connected. It can send a disconnect command using the CAN line (5).

As can be seen in Figure 11, the chassis (2) over the central gate control unit (1), steering angle sensor (3), electronic air pressure unit (4) with CAN line (5) The necessary maneuvering position for the vehicle is decided by communicating via

As can be seen in the figure, if the weight value (6) is not below the determined value. the axle is kept down (9). The weight value of the vehicle (6) is greater than the specified value. If it is below, the steering angle value (7) is higher than the value determined by checking. if not, the axle is down (9), if it is high, that is, if a wide maneuver is to be made, remove it (8) is commanded. Remove the rearmost axle (8) by the specified set time lapse (10) command remains active. Afterwards, the road is continued with the axis down (9).

As can be seen in Figure-Side, axle (11), differential box (12), input shaft (13), suspension (14), the structure of the traction axle formed by the wheel hub (15) is given.

As can be seen in Seki-Bida, air suspension bellows (18) is provided. Wheel Air springs (18) in conjunction with (21) to air springs (18) air supply (20) and control valve (19) are shown.

As can be seen in the figure-, air suspension bellows (18), lifting air bellows (25), chassis connection points (24), lift axle rotation axis (26) are shown.

As can be seen in the figure-food, when the rearmost axle (11) is lifted, the turning radius (27) decrease is indicated. In this way, the maneuverability of the vehicle is improved.

Easier maneuvering of heavy goods vehicles operating in narrow angle turning areas they are allowed to do.

In order to increase the turning ability of freight vehicles in off-road conditions, the turning angle, speed automatic lifting of the relevant axle in the vehicle using the information and load information. In order to provide Central gate that manages axis (11) remove axis (8) or axis down (9) commands control unit (1), weight value (6) and steering angle value (7) With the command (11) remove the opposite (8) as much as the set time transition (10) since it arrives. with the electronic air pressure unit (4) that enables the lifting and lowering of is characterized.

The axle (11) eliminates the inertia of the raised axle to the engine during the lifting process. jaw clutch, which cuts off the drive to lift In contrast to the compressed clutch discs in the jaw clutch that allows two discs to be brought closer together and locked naturally Using the vehicle total weight (6) information and the steering wheel angle value (7) information If it decides that all conditions are met, it can be removed (11). It provides the necessary amount of air pressure to the air bellows (25) and the axle (11) also connect the CAN line (5) to the jaw clutch control unit, which electronic air pressure unit that controls the sending of the disconnect command using (4) includes.

If the weight value (6) is not below the determined value, the axle should remain below (9) is provided. If the weight of the vehicle (6) is below the specified value, the steering angle If the value (7) is not higher than the value determined by checking, the axle is below (9), if it is high, that is, if a wide maneuver is to be made, give the command to remove the opposite (8), The command to remove the rearmost axle (8) for the specified set time transition (10) is active. It includes the process of continuing on the road with the axle down (9) after the stay.

Over the lift air bellows (25), the axle (11), the steering angle (7) and the vehicle's control by software that decides whether to lift or lower the weight values (6) The central gate control unit (1) includes the electronic air pressure unit (4).

Claims (5)

REQUESTS 1. The invention relates to axle (11) lifting systems in heavy commercial vehicles with more than two axles, and its feature is; In order to increase the turning capability of freight vehicles in off-road conditions, the vehicle weight value (6) is reversed from the rearmost axle (11) according to the steering angle value (7), in order to enable the automatic lifting of the relevant axle on the vehicle by using the turning angle, speed information and load information ( 8) or the axle down (9) commands, the central gate control unit (1), the weight value (6) and the steering angle value (7) come to the specified conditions, so the axle (11) is commanded to reverse (11) for the set time transition (10) It is characterized by the fact that it contains an electronic air pressure unit (4) that enables the lifting and lowering of the device. 2. It is the axle (11) lifting system according to claim 1, its feature is; The jaw clutch, which ensures that the drive is interrupted in order to eliminate the inertia of the axle that rises to the engine during the lifting process of the axle (11), contains a jaw clutch that allows the two opposite discs with teeth (22) to be brought closer to each other and locked naturally, unlike the tight clutch discs in the clutch system in automobiles. 3. It is the axle (11) lifting system according to claim 1, its feature is; If the vehicle decides that all conditions are suitable by using the vehicle total weight value (6) information and the steering angle value (7) information, it provides the necessary amount of air pressure to the lifting air bellows (25) of the lifting axle (11) and enables the axle (11) to rise, It contains an electronic air pressure unit (4) that controls sending a disconnect command to the jaw clutch control unit using the CAN line (5). 4. Axle (11) lifting system according to claim 1, its feature is; - If the weight value (6) is not below the determined value, the axle is kept down (9). If the weight value of the vehicle (6) is below the determined value, the steering angle value (7) is checked and if it is not higher than the determined value, the axle is down (9), if it is high, that is, if a wide maneuver is to be made, give the command to lift the opposite (8), - the set time transition ( It includes the operations of continuing the road with the axle down (9) after the command to remove the rear axle (8) until 10 is active. 5. It is an axle (11) lifting system in accordance with claim 1,3, its feature is; - central gate control unit (1), electronic air pressure unit (4), controlled by software that decides whether to raise or lower the axle (11) via the lift air bellows (25), the steering angle (7) and the weight values of the vehicle (6) it contains.