The method of regulating the cross-coupling of the vehicle
(57) Abstract:The invention relates to transport machinery and concerns the methods of control vehicles. The purpose of the invention: improving the accuracy and efficiency of regulation traction ropes. In the fixing process is carried out reciprocal rectilinear provisions of parts 1, 2 and bogies 5 sliders 6, 7 and subsequent alignment and control efforts in flexible rods rope-driven 3 tensioning device 4 and measuring devices 8, installed on the limiters 7. 1 Il. The invention relates to transport machinery and concerns the methods of control vehicles.In control systems long-wheelbase trucks are widely used rope drive swivel truck trailer link. There are many ways to control cable-drive rotary truck trailer link trains. A common disadvantage of known methods is the lack of efficient and accurate pre-regulation of the lengths and efforts in flexible rods cable actuator providing movement of the trailer link on a given path.In a known way (about where the tractor is associated cable-drive with swivel truck trailer-dissolution. This relationship tractor with rotary truck trailer-dissolution is called cross-coupling, because the traction rope-driven cross. The method is empirically that the method of selection will determine an appropriate ratio of effort and lengths of flexible rods rope-driven, so that the trailer dissolution followed by a tractor along a certain trajectory. Quality control management system is determined by means of test runs trains on both rectilinear and curvilinear sections of the trajectory. After each series of test runs produce the adjustment of the control system taking into account the identified deficiencies and the whole process repeated first to the final stage of the control system.For proper operation of the cross-coupling of the final adjustment of the tension of the traction ropes carried out directly after the release of loaded trains from minimum turning radius directly, and sagging traction cables should be no more than 2-3 see Low efficiency and high complexity of this method are obvious. In addition, the lack of monitoring and measuring relations efforts and lengths of the traction cables of the drive limits the adjustment and what I traction ropes.This is achieved in that in the method of regulating the cross-coupling of the tractor and the associated via the cable actuator trailer-dissolution with swivel trolley, namely, that the adjustment of the tension of the traction ropes carried out at the position of the tractor and trailer dissolution, the corresponding rectilinear movement, the installation of a tractor trailer-dissolution in the correct position for rectilinear movement, through a consistent set of constraints in the kinematic relations of the tractor-trailer dissolution, trailer-dissolution-rotary rack, when adjusting the tension of the traction cables instrumentation control and balance loads limiters kinematic link trailer-dissolution-rotary rack, after which the kinematic relations are exempt from limitations.In the known method is not used preliminary fixing of the tractor, trailer-dissolution and bogies, and their mutual position is evaluated only visually. Feature of the proposed method is that prior to the adjustment of the control system with constraints is ensured by the mutual position of the tractor, trailer-raspuskaet, installation of restrictors is a technique that provides both the fixation and the symmetry of the tractor, trailer-dissolution and the bogie relative to the longitudinal axis of the vehicle.Quality control selection of necessary relations efforts and lengths of the traction ropes carried out directly in the process of adjustment using measuring instruments, and not the result of a series of test runs of trains. Moreover, the use of a measuring device in each of the limiters kinematic link trailer-dissolution-rotary rack ensures the achievement of equal tension in the traction drive cables.The drawing shows a diagram of the adjustment crosswise of the trailer hitch.This scheme includes many promising and now widely used in the national economy of the vehicle. The proposed method was tested using trains MASA+GKB 9383, where the driving member 1 is a tractor MAZ A and slave part 2 - trailer-dissolution CCH 9383. Traction drive cables 3 with the tensioning device 4 connects the tractor 1 with swivel trolley 5 trailer-dissolution 2. The position of the tractor 1 and trailer-dissolution 2 and the bogie 5 otnositel 7 kinematic link 2-5 is equipped with measuring devices 8. In the proposed scheme uses flexible constraints of a certain length, which are attached to their corresponding points on the tractor and the trailer dissolution, and on the swivel truck. To set constraints on the combination MAZ A+GKB 9383 you can use the additional slots for securing the traction cables of the drive to the traction beam tractor and special clamps mounted on the drawbar trailer-dissolution at a certain distance from the tractor and the bogie. When you are finished adjusting the clamps together with the limiters removed from the vehicle. As measuring devices can be used strain links or calibrated instruments with elastic elements, is arranged to lock the elastic elements and operating on the principle of dynamometer. In the latter case, when setting the limiters 7 elastic elements and measuring devices 8 should be blocked. At the time of adjustment of the traction ropes drive 3 lock elastic elements is removed.The whole process of adjustment crosswise of the trailer hitch can be divided into two stages.The first stage is set and fixed position of the kinematic links 1,2 is thetsa continuous rotation setup operations limiters 6,7 and operations maneuvering the vehicle. With a slight right or left turn of the vehicle is tension already imposed on the kinematic link 1-2 and 2-5 terminators. At the same time changing the mutual position of the kinematic links 1,2 and 5. This in turn allows to set all limit switches 6,7 fixing kinematic link 1-2 and 2-5.In the second stage adjustment cross-coupling is performed using devices 4 tensioning of the traction ropes actuator 3. Control over the tension of the flexible rod is carried out using a measuring instrument 8, limiters 7, kinematic relations 2-5. Uneven tensioning of the traction cables there is a change in the measuring instrument 8, and the alignment of efforts in cable actuator 3 readings of the measuring devices 8 are returned to their original values. This ensures equal tensioning of the traction cables of the drive system control in straight-line motion of the vehicle. Upon completion of the adjustment of the control system all the limiters are removed.The proposed method is simple and affordable. Does not require complex equipment and special training of the driver. The use of removable stops metering is two, with rope drive in the control system. The method allows a rapid and high degree of accuracy to debug cross-coupling of trains. The METHOD of REGULATING the CROSS-COUPLING of a VEHICLE consisting of a tractor and associated via the cable actuator trailer-dissolution with swivel trolley, namely, that the adjustment of the tension of the traction ropes carried out at the position of the tractor and trailer dissolution, the corresponding rectilinear movement, characterized in that the installation of a tractor trailer-dissolution in the correct position for rectilinear movement, through a consistent set of constraints in the kinematic relations of the tractor-trailer dissolution, trailer-dissolution-rotary rack, when adjusting the tension of the traction cables instrumentation control and balance loads limiters kinematic link trailer-dissolution - rotary rack, after which the kinematic connection free from constraints.
FIELD: transport engineering.
SUBSTANCE: invention relates to trailer-trains with prime mover and one or several trailers. Trailer for use in trailer-train has main chassis made for articulated connection with wheeled part of truck directly before trailer with possibility of turning of wheeled part relative to main chassis around vertical first axle on main chassis. Additional chassis provided with great number road gripping wheels installed on chassis at a distance from each other in longitudinal direction and connected with main chassis for free turning around mainly vertical second axle of main chassis, stop gear adapter for setting maximum angle of free turning of additional chassis from position of alignment in longitudinal direction relative to main chassis depending on positioning of stop gear relative to main chassis. Trailer is furnished also with device for automatically positioning stop gear relative to main chassis at turning of wheeled part around first axle so that maximum angle changes according to positioning of stop gear, and control device responding to relative turning of additional chassis and main chassis around second axle to control at least two said pairs of wheels relative to additional chassis to align additional chassis relative to main chassis in longitudinal direction. Each pair of steerable wheels is installed on fixed axle unit hinge-connected with additional chassis and is made to control, by turning, axle unit around vertical third axle. Axles of rotation of each pair of steerable wheels meet at side of additional chassis at turning of trailer.
EFFECT: improved steerability owing to direction of trailer wheels along track pf primer mover.
20 cl, 16 dwg
SUBSTANCE: coupler contains means for installation on trailer with capability of pivot-hinged turn of at least one left wheel and at least one right wheel, independent means of pivot-hinged turn of trailer and prime mover coupling, means for performing differential turn of wheels and trailer with regard to prime mover in process of turn performed by prime mover. Limiting device is made so as to limit magnitude of wheel turn as compared with wheel turn related to trailer in absence of limiting device. Limiting device contains follower with front end connected with said devices for installation of wheels on trailer and rear end. Follower includes protruding coupling sphere on rear end or near it. Limiting device additionally includes slider guide made so as to couple with prime mover and installed in parallel with or inclined to prime mover and trailer chassis. Coupling sphere is installed with ability to move along slider guide of limiting device in process of prime mover movement.
EFFECT: securing of smooth and safe turning and exclusion of folding effect.
17 cl, 18 dwg
FIELD: mechanics; transportation.
SUBSTANCE: invention relates to controllable devices intended for goods transporting, particularly to trailers designed to be coupled with driving vehicle. The invention may be used under limited spatial conditions. The device is intended for transporting goods and contains frame where controlling and controllable swinging circles are installed in the lower part of the frame. Controllable wheels are placed on an axis and connected with controllable swinging circle. The pulling element is coupled with swinging circles and forms figure-of-eight shaped loop. In addition, axle with wheels is connected with controlling swinging circle. In order to place pulling elements, sprocket wheels are installed under controlling and controllable swinging wheels. The pulling element is represented with a chain in the points of sprocket coverage. The above mentioned chain is fastened to the rigid thrusts by means of turn-buckles.
EFFECT: increased reliability of device and accurate turning.
SUBSTANCE: set of inventions relates to a forced control system to be used with a trailer and several different trucks. The forced control system contains a coupling part to be placed on a truck (5) and a coupling loop part (3) to be placed on the trailer (4). The coupling part and the coupling loop part (3) are designed to be coupled together in a coupling point and in the point of an articulated joint located at a distance from the coupling point. On each of multiple different trucks (5), using the coupling part preliminary matched with this truck (5), the coupling point and the point of the articulated joint are located respectively at a required distance from the rear axle (51) of the truck (5) so that adjustment of an optimal angular ratio of the angle between the truck (5) and the loop part (3) relative to the angle of deflection of steer wheels (42) of the trailer (4) can be guaranteed for various combinations of vehicles.
EFFECT: forced control system is achieved without additional equipment which system being used with multiple various trucks provides possibility of rolling for situated one after another wheels of several trailer rear axles during cornering with lateral stability.
14 cl, 6 dwg