Automatic device to decrease course drift of tractor-train trailer

FIELD: transport engineering.

SUBSTANCE: invention can be used to decrease course drift of trailers of tractor trains. Proposed automatic device to decrease course drift of trailer has operating members in for of hydraulic cylinders mounted on trailer chassis, electromagnetically controlled hydraulic system, hydraulic pump and distributor with bypass valve. Device is furnished with additional independent operation distributors controlled by solenoids arranged on trailer chassis, transistors forming power circuit including solenoids and lamps showing direction of trailer drift arranged in driver's cab and control circuit including contact group which controls operation of operating members and being essentially sealed contacts controlled by permanent magnet and arranged on chassis of trailer between trailer slewing circle and load platform. Placed in control circuit is sealed contact operated by permanent magnet and located on steering column which controls operation of automatic device reducing drift of trailer at cornering.

EFFECT: increased speed of train and capacity, reduced tendency to jack-knifing when negotiating slopes, simplified design.

4 dwg

 

The invention relates to transport machinery and can be used to reduce foreign exchange pulling trailers tractor trains.

A device improve lateral stability, consisting of a tank for fluid, a hydraulic pump, two series-connected Executive bodies in the form of cylinders with spring-loaded rods, provided with throttling holes in pistons, solenoid valve, the threshold sensor inertial forces are included in the circuit controlling the valve, a valve regulating the flow cross section of the drain line (see A.S. No. 1533918, MKI B 60 T 7/12, 8/24).

The disadvantages of this device is that it does not address the issue of exchange rate stability multilink vehicle does not have autonomy of action, especially for the latest trailers. Also a disadvantage is the constant drive of the pump of the hydraulic system regardless of the frequency of use of this device, and therefore, a high index of time in idle mode.

Closest to the proposed device is a trailer hitch (hitch), consisting of a single hydraulic cylinder, which is the Executive body (EB)rigidly connected with the drawbar of a trailer equipped with a spring-loaded rod with Drosselgasse and holes, hydraulic solenoid control valve. When the transmission of torque from the wheels of the trailer, through shafts, bevel differential gear and the main gear, starting when turning or truck when the alarm threshold sensor under the critical action of centrifugal forces of inertia, hydraulic fluid is fed under pressure into the cavity IO, changing the kinematic parameters of the train (see A.S. No. 2149765, MKI B 60 D 1/145).

The disadvantage of this device is that it does not address the issue of term withdrawal of tractor trailer train in straight-line motion and has a complex structure.

The technical object of the present invention is to reduce exchange rate of withdrawal of multi-tier transport trains due to changing kinematic parameters for automatic device lower exchange rate of withdrawal of the tractor trailer train that allows increasing the speed of the train, and hence the performance of the transportation and less prone to folding trailer when driving on a slope and the simplification of the structure.

The task is achieved in this automatic reduction device directional turning of the tractor trailer train, containing IO in the form of hydraulic cylinders located on the chassis of the trailer, the hydraulic system with electromagnetic control, hydraulic us is with a by-pass valve, characterized in that the device is provided with an additional valve for independent operation, controlled by solenoids located on the chassis of the trailer, the transistors forming the power circuit, which includes the solenoids and lights, indicating the direction of turning of the trailer located in the operator compartment, and a control circuit which includes the contact group, controls a IO which are sealed contacts controlled permanent magnet located on the chassis of the trailer between the turning circle of the trailer and cargo platform, and tight contact of the driven permanent magnet located on the steering column that controls the automatic reduction of a course withdrawal trailer tractor trains when turning.

Comparison of the proposed design automatic reduction course turning of the tractor trailer train with the prototype allowed us to conclude that the claimed technical solution is new, because it has IO, located on the chassis of the trailer, distributors, two of which with independent actuation, controlled by solenoids, mounted on the chassis of the trailer, and the transistors and the contact group, which manages the work of the IO, representing the reed contact located n the chassis of the trailer, lights that indicate the direction of tilt of the cart, located on the instrument panel in the operator's cab, which reduces directional turning of the tractor trailer trains.

The technical solution is illustrated by the drawings.

Figure 1 - functional diagram of the automatic reduction course withdrawal tractor trailer trains;

Figure 2 - valve;

Figure 3 - arrangement of automatic reduction course withdrawal tractor trailer train on the chassis of the trailer;

4 is a diagram of the forces when folding trailer.

Automatic reduction course withdrawal tractor trailer train contains a working fluid container 1, the hydraulic pump 2 by-pass valve 3. Also this device has a valve 4 located on the chassis of the tractor, located in the pressure line 5 and the hydraulic accumulator 6, located between the valves 4 and 7, 8. The pressure line 5 connects the hydraulic pump 2, located on the chassis of the tractor, and additional valves 7 and 8, located on the chassis of the trailer. The valves 7 and 8, one side of which are screwed tubes 9 and 10, and with the other tubes 11 and 12, contain inside the spools 13 and 14. The tube 11 has a hole for connection to the solenoid 15, and the tube 12 for connection to the solenoid 16. Cavity And formed C is letnica 13 and tube 9, and the spool 14 and tube 10, is connected with the cavity B, formed by the spool 13 and the tube 11 and the spool 14 and tube 12, through the through hole in the spool 13 and 14. This is necessary for the free flow of working fluid from the cavity And into the cavity B when moving the spool 13 and 14 during operation. The spools 13 and 14 are biased by compression springs 17 and 18, providing for the return of spools are in neutral position. In the electrical part of the automatic device lower course of the withdrawal of the tractor trailer train includes transistors p-n-p type 19 and 20, located on the chassis of the trailer, the contact group, consisting of sealed contacts 21 and 22 driven permanent magnet 23 is located on the chassis of the trailer between the turning circle and a cargo platform, the light bulb 24 and 25 located on the instrument panel of the operator, indicating the direction of deviation of the trailer, sealed contact 26 of the automatic control device of the lower course of the withdrawal of the tractor trailer train when turning and the permanent magnet 27 is located on the steering column.

To force off the electrical part of the automatic reduction course withdrawal tractor trailer train includes a switch 28. The power of the electrical part is supplied from the power source 29.

Transistors clicks the form of power and control circuit. The composition of the control circuit connecting the positive terminal of the power source 29, the emitter and base of transistors 19 and 20 and the negative terminal of the power source 29 includes the contact group controls a IO which are sealed contacts 21 and 22 driven permanent magnet 23, located on the chassis of the trailer between the turning circle of the trailer and the cargo platform and the reed contact 26, controlled permanent magnet 27 that is located on the steering column that controls the automatic reduction course turning of the tractor trailer train when turning. Part of the power circuit connecting the positive terminal of the power source 29, the light bulb 24 and 25, indicating the direction of turning of the trailer located on the instrument panel in the operator's cab, the emitters and collectors of the transistors 19 and 20, the solenoids 15 and 16 and the negative terminal of the power source 29.

The Executive bodies are the cylinders 30 and 31, the rod cavity of which is constantly connected with each other and with the drain line 32. In the drain line 32 before working fluid container 1 has a filter 33. Such a scheme with two hydraulic cylinders 30 and 31 is selected to ensure the same force and speed of movement of the rod while the system is running in different directions and to reduce the tendency to collapse is Recep when driving on a slope.

Automatic reduction course withdrawal tractor trailer train operates as follows.

In straight-line motion of the trailer permanent magnet 23 is in the neutral position, the reed contacts 21 and 22 of the contact group are in the open state, while the reed contact 26 under the action of the permanent magnet 27 is closed. The location of the permanent magnet 27 is such that with a rectilinear motion and a slight turns of the steering wheel, sealed contact 26 remains closed. The bypass valve 3 whole working fluid under low pressure directs into the tank 1. The spools 13 and 14 are in the neutral position. In the neutral position the pressure line blocked one shoulder spools 13 and 14, and Rodless cylinders cavity Executive bodies 30 and 31 is connected to the drain line 32. Transistors 19 and 20 are locked as tight contacts 21 and 22 are open and the base is not a negative potential is applied. The current in the circuit, the emitter-collector close to 0 and not able to affect the solenoids 15 and 16. The current in the circuit of the emitter-base equal to 0.

When the deviation of the trailer on the right side of the permanent magnet 23 is shifted to the left and enters the zone of operation of reed contacts 22 and causes the circuit. At the base of transistor 20 is supplied on the negative potential and the transistor 20 is opened, as from the emitter into the base includes holes, creating a current of the emitter. Part of the "holes" in the recombines into molecules with electron base, causing a small base current. As the thickness of the base is small, then most of the "holes" reaches the collector, for this transition opened and they freely pass into the reservoir, creating a current collector. The current from the power source 29, when the closed position of the switch 28, passes through the transistor 20 to the solenoid 16, when this occurs, the actuation of the light bulb 24. The valve 14 under the action of the solenoid 16 is shifted from the neutral position and simultaneously opens the pressure line 5 and closes the drain 32. The flow of working fluid between the closed cavities a and B is carried out by using the provided for this purpose through holes in the spools 13 and 14. The diameter of the hole is such that the working fluid is free to flow between the cavities and at low temperatures. When this sealed contact 26 remains closed under the action of the permanent magnet 27, as the tractor continues to move rectilinearly. As soon as the valve 14 will open the flow valve 5, the bypass valve 3 increases the pressure in the hydraulic system to work and directs the working fluid to the distributor 4. Then the working fluid under pressure enters the hydraulic accumulator 6, charging him. If e is ω is the gradual increase of volume of the working fluid, coming through the distributor 8 to the Executive body 30, thereby providing a smooth start moving rod of the hydraulic cylinder that provides the best conditions for lateral stability of the trailer and eliminates the possibility of water hammer in the Executive body 30. Passing through the pressure line 5, then through the distributor 8, the working fluid is directed to a Rodless cylinders cavity of the Executive body 30 and the alignment of the trailer, and the rod end of both cylinders 30 and 31 are connected together and to the drain line 32. This is necessary in order seeping through the stem seals the working fluid is not created in the system mechanical stresses, the working fluid displaced from the rod end of the hydraulic cylinder 30, flowed rod in the cylinder chamber 31 and to the best convenience of filling the rod ends of the working fluid at system installation. The second valve 13 is in the neutral position, that is, reports Rodless cylinders cylinder chamber 31 with the working fluid container 1. When the output of the permanent magnet 23 of the zone circuit sealed contact 22 of the transistor 20 is closed, so as to base ceases to apply a negative potential, and blocks the current to the solenoid 16. The valve 14 under the action of the compression spring 18 is returned to neutral the aspects of the position. The bypass valve 3 lowers blood pressure and directs the working fluid in the working fluid container 1. Hydraulic accumulator 6 is discharged.

The operation of the device the lower course of the withdrawal of the tractor trailer train when the deviation of the trailer to the left is similar.

When turning the system manages the reed contact 26 with a permanent magnet 27. Reed contact 26 is in such position that when the rectilinear motion, and with a slight hesitation steering it is opposite the permanent magnet 27 and is closed. When turning the permanent magnet 27, the rotatable simultaneously with the wheel out of the zone of action of the pressurized contact 26 and the latter is opened, thereby blocking access current to the transistors 19 and 20, and the system thus turning off from work.

To adjust the angle of the actuation system depending on the steering angle can be set to 2 or more parallel-connected between a sealed contacts to expand the working area of the system. To adjust the angle of the actuation system, depending on the rotation of the turntable trailer provided by the smooth movement of reed contacts, increasing or decreasing the angle of the actuation system.

When scadian and trailer left the automatic reduction device directional turning of the tractor trailer trains operate as follows.

When driving on a slope, at the moment when the rear axle of the trailer, under the force of folding RAC attached to the center of gravity of the trailer Src, begins to shift from the trajectory relative to the center fold Of the moment of resistance to folding Mo, front axle associated with a turning circle remains stationary, as a result of the redistribution of weight on the front axle (N1>N2) the friction force of the tires of the front axle of the trailer on the roadway in the transverse direction is larger than the rear (RPR1>RPR2). Once the frame of the trailer and rigidly connected with it the rear axle rotates relative to the turntable so that will trigger the reed contact 21, the automatic reduction device directional turning of the tractor trailer trains will be operated as described above. This Executive body 31 rigidly connect the turntable trailer with his skeleton, which, in turn, rigidly connected to the rear axle. Thus to resist collapse is not only the rear axle due to the friction force of the tires on the pavement, but the front axle, in addition, will change the center folding, moving from point O to the point O1and therefore will change and the moment of resistance of folding is not only due to the additional force of the RuDG1but due to a change in shoulder torque resistance. T is for as the tractor continues to move, is a smooth return of the rear axle of the trailer on the same trajectory, the angle of rotation of the skeleton of the trailer relative to the turntable is reduced and the system turned off from work.

When folding trailer right automatic reduction course withdrawal tractor trailer trains operate in the same way.

In case of failure of the automatic device lower exchange rate of withdrawal of the tractor trailer trains, disable the electric part through switch 28, and the hydraulic part of the valve 4. Mandatory disconnection of the hydraulic part is only necessary when it is broken and in this case, the system will only indicate the direction of tilt of the trailer by means of the lamps 24 and 25, but to participate in the elimination of a course withdrawal will not.

We offer automatic reduction course withdrawal tractor trailer train provides increased stability of the tractor trailer train through use as OI cylinders located on the chassis of the trailer, managed through the spools and the contact group, which will improve the speed and performance of the train.

Automatic reduction course withdrawal tractor trailer train, containing the Executive bodies in the form of hydraulic cylinders located is built on the chassis of the trailer, the hydraulic system with electromagnetic control, hydraulic pump and valve with by-pass valve, characterized in that the device is provided with an additional valve for independent operation controlled by solenoids located on the chassis of the trailer, the transistors forming the power circuit, which includes the solenoids and lights, indicating the direction of turning of the trailer located in the operator compartment, and a control circuit which includes the contact group that controls the activities of Executive bodies and representing a hermetic contacts managed by a permanent magnet and located on the chassis of the trailer between the turning circle of the trailer and cargo platform, in addition, the management the circuit includes a reed contact, controlled permanent magnet and located on the steering column that controls the operation of the device the lower course of the withdrawal of the tractor trailer train when turning.



 

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The invention relates to vehicles, particularly to coupling devices trucks

FIELD: transport engineering.

SUBSTANCE: invention can be used to decrease course drift of trailers of tractor trains. Proposed automatic device to decrease course drift of trailer has operating members in for of hydraulic cylinders mounted on trailer chassis, electromagnetically controlled hydraulic system, hydraulic pump and distributor with bypass valve. Device is furnished with additional independent operation distributors controlled by solenoids arranged on trailer chassis, transistors forming power circuit including solenoids and lamps showing direction of trailer drift arranged in driver's cab and control circuit including contact group which controls operation of operating members and being essentially sealed contacts controlled by permanent magnet and arranged on chassis of trailer between trailer slewing circle and load platform. Placed in control circuit is sealed contact operated by permanent magnet and located on steering column which controls operation of automatic device reducing drift of trailer at cornering.

EFFECT: increased speed of train and capacity, reduced tendency to jack-knifing when negotiating slopes, simplified design.

4 dwg

FIELD: transport engineering; trailer-trains.

SUBSTANCE: invention relates to trailers of trailer-trains and can be used to increase maneuverability of trailer-train by increasing length of draft pole at considerable angles of jack-knifing. Proposed adjustable-length draw-and-coupler gear has draft pole consisting of separate links hinge-connected to each other, gear rim secured on frame of trailer, gear wheel installed on subframe being in meshing with gear rim, accelerating mechanism made in form of two gear racks in meshing with gear wheels, each being rigidly connected with crank hinge-coupled with one of links of draft pole. Device is furnished additionally with connecting rod, one end of which is hinge-coupled with racks of accelerating mechanism, and the other, with gear wheel installed on subframe.

EFFECT: increased speed of action of accelerating mechanism, improved reliability and simplified design of device.

2 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to coupling gears of trailer-trains for use in cases when large vehicles are to be coupled for operation off road and on heavy terrain. Proposed coupling gear of trailer-train consisting of prime mover and trailer contains semi-frames for fastening coupling gear members, front one installed in bushing rigidly connected with semi-frame of prime mover and rear one installed in cylindrical cup and rigidly connected with semi-frame of trailer, and tie-rods interconnected by connecting link. Said connecting link is made in form of cross with displacement relatively perpendicular axles whose vertical diametrically arranged pins are coupled with rear tie-rod, and diametrically arranged horizontal ones, with front tie-rod. Said bushing is furnished with pilot-controlled check valve for fixing extreme points of horizontal displacement of front tie-rod. Hydraulic shock absorbers are hinge-secured on semi-frames of prime mover and trailer, being coupled with pilot-controlled check valve and located higher than upper point of hinge turning of tie-rods. Moving part of hydraulic shock absorber exceeds value of longitudinal displacement of front tie-rod.

EFFECT: improved reliability, increased service life and maneuverability when negotiating heavy obstacles, increased angle of turning of coupling gear.

3 dwg

FIELD: machine building.

SUBSTANCE: invention relates to transport engineering, namely to trailers hitch mechanisms. Multifunctional trailer hitch mechanism comprises coupling element, rigidly coupled with crossbar provided with thrusts and locking device, symmetrically arranged relative to tie-rod longitudinal axis, each of which is made in form of hydraulic cylinder. Tie-rods first ends are articulated with crossbar, and second are with trailer front axle. Device is additionally equipped with electronic control unit, hydraulic cylinders piston and rod cavities electric windings, hydraulic cylinders windings control busbar, hydraulic cylinders piston and rod cavities shielding. In device hydraulic system magnetorheological fluid is used as working liquid instead of oil.

EFFECT: enabling increase in trailer train flotation ability due to its components separate starting and matching of truck wheels tracks and trailer at curvilinear motion, increase in trailer train road-holding ability during braking, hitching element reduced wear, device higher automation and faster operation.

1 cl, 2 dwg

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