Windscreen wiper drive system of, particularly, locomotive operator cabin and windscreen wiper

FIELD: transport.

SUBSTANCE: windscreen wiper drive system incorporates motor-reductors to drive every wiper, control and switching components. The aforesaid system comprises also an onboard circuit voltage converter connected to automatic circuit breaker, an overload protection circuit connected with the mode switcher connected, via an automatic control circuit, to the shaft of every aforesaid motor-reductor shaft. The said automatic control circuit is arranged on the gear of every motor-reductor and represents a plate. The proposed wiper contains a rubber brush, a fastener with a hinge coupled with a parallelogram mechanism representing two levers fitted on the motor-reductor elongated shaft. One of the said levers is arranged to turn on the bracket coupled with a taper gear of every aforesaid shaft and furnished with a spring, one its end being fastened to the bracket and the other one with the lever. At that the second lever moves with the bracket rigidly coupled with the motor-reductor shaft tail.

EFFECT: higher reliability.

5 cl, 3 dwg

 

The proposed invention relates to devices for cleaning vehicles, in particular for cleaning windshields glass-windscreen wipers with electric drive.

Traditionally the drive wiper locomotives used pneumatic device.

The disadvantage of this drive is that such devices affected by temperature: when the temperature of the ambient air in the piping for compressed air condensation, affect the stable operation of the wiper. In addition, the pneumatic actuator is not possible to regulate the speed of the wiper, as it has, as a rule, a single speed.

Widely used as a drive wiper car electric actuators. However, the characteristics of operation of locomotives, in particular changes on-Board voltage locomotives do not allow the use of known construction drives.

Known windshield wiper, which contains a brush, a parallelogram mechanism consisting of a rotatable and secondary levers, the upper ends of which are hinged to the plate lugs and the lower - rotatably to the vehicle's chassis (EN, p. No. 2139208, IPC B60S 1/06, from 26.12.1998,, publ. 10.10.1999,).

The disadvantages of this Stikliai the Titel is the design complexity and lack of reliability pressing the wiper blade to the windshield.

The technical objectives of the proposed inventions addressed by the authors, are to ensure the stability of operation of the actuator by eliminating the influence of the voltage drop on-Board network, conversion, and stabilization of output power settings of the drive, protecting electrical components from overload and short circuits, as well as ensuring reliable pressing of the windshield wipers to the windshield of the cab due to improvements in fastening his arms.

The task is achieved by the fact that in the system of electric drive wiper of the vehicle, particularly the driver of the traction rolling stock containing the gear motor to drive each of the wiper controls and switching, according to the invention, the system includes a voltage Converter on-Board network associated with automatic switch-off, overload protection, interacting with the mode switch, through which the finishing machine is connected with the shaft of each gear reducer, with machine finishing is installed on the gear of each gear reducer and is made in the form of a plate.

Overload protection is made in the form of a relay with a bimetallic plate.

Gear gear reducers installed on the machine finishing, made of dielectric material.

Switch the fir modes is made in the form of a switching device of a Cam type.

The inclusion in the system of the voltage Converter, which is a 2-channel semiconductor device, allows you to convert on-Board voltage up to 24 V, ie to stabilize the output parameters, which protects the gear motor overload and failure.

The system circuit breaker provides protection from the differential current in the on-Board network of the locomotive, and the side chain from a short circuit in the electrical network of the wiper.

The system overload protection eliminates the flow of current exceeding the rated value, the gear motor, which prevents them from overheating.

The presence in the system mode switch provides manual switching speed modes wiper that improves its performance and easier management for the driver.

The system of automatic tuning allows you to return the wiper blade to its original position. And doing it in the form of a plate attached to the shaft of each gear reducer, high-tech.

Running overload protection in the form of a relay with a bimetallic plate manufacturable and reliable.

Perform the mode switch in the form of a switching device of a Cam-type technology and allows for manual switching of high-speed modes.

The running gear of the gear reducer, which is a machine lapping of a durable dielectric material prevents flow through it, which eliminates power loss and ensures reliable operation of the finishing machine.

In the wiper containing rubber brush secured in the elongated holder, the fastening element in the form of elastic curved plate, which is fixed to the hinge, with which is associated a parallelogram mechanism, in the form of two levers mounted on the shaft of each gear reducer and associated jumpers, according to the invention the shaft of each gear reducer is made longer, one of the levers mounted to rotate on the bracket associated with the bevel gear shaft, and provided with a spring, one end fixed on the bracket, and the other on the lever, the second lever movably connected with the bracket, rigidly connected with the rear part of the shaft each gear reducer.

Execution of the shaft of the gear reducer elongated expanding technological possibilities for mounting the wiper arm on the different types of cabs traction rolling stock with different types of front Windows.

Installation of one of the levers can be rotated on the bracket associated with the bevel gear shaft gear reducer, technology, and the presence of prog the us, installed declare a manner that provides a stable preload the wiper blade to glass regardless of the speed of the locomotive by means of springs necessary rigidity.

Installing a second lever movable on the bracket, rigidly connected with the rear part of the elongated shaft of each gear reducer which allows you to change the angle of the lever and its associated brush relative to the surface of the windshield from 12-15°.

As a result of patent research has not identified a known from the prior art similar technical solutions, characterized by the claimed combination of features that allows us to draw a conclusion about the relevance of the proposed inventions criteria of "novelty" and "inventive step", can find application in engineering, i.e. meets the criterion of "industrial applicability".

The essence of the invention is illustrated by drawings, where figure 1 presents a schematic diagram of a drive control system wiper; figure 2 - wiper, figure 3 is a view As in figure 1, increased.

The system of electric drive wiper contains the circuit breaker 1, the inverter 2, the overload protection 3, switch 4, the finishing machine (not shown), gear motors 5 and 6.

The system works as education is.

The voltage from the electrical system is fed through the circuit breaker 1, at the input of the voltage Converter 2. Through the overload protection 3 the voltage applied to the mode switch 4, the contacts of the finishing machine and gear motors 5 and 6.

When the on-Board voltage network locomotive more than 110 or 50 automatically switches off switch 1. Further on-Board voltage Converter 2 is reduced to 24 In that stabilizes the output parameters, protects gear motors 5 and 6 overload. With the passage of the current through the overload protection 3, if its value exceeds the nominal value by more than 10%, the bimetallic plate protection 3 breaks the contact. After its cooling system is automatically activated. Switch speed mode 4 interacts shaft gear motors 5 and 6.

Each wipe contains a brush 7, the arcuate element 8, the hinge 9, the levers 10 and 11, spring 12, the brackets 13 and 14, the bevel gear 15.

The operation of the wiper is carried out as follows.

The levers 10 and 11 declare fix the image on the brackets 13 and 14, respectively, which are mounted on shafts 5 and 6 of the gear motor. On the lever 11 and the bracket 14 is fixed to the spring 12.

When enabled, the drive control modes of the brushes of each wiper 7 is Cam the switches 4, which provide three modes of operation: off, operation of the finishing machine, low speed reciprocating motion of the brushes 7 and the high speed brush 7. Due to the installation of the springs 12 selected rigidity is ensured by the pressing of the brush 7 to the windshield of any configuration.

Thus, the claimed control system of electric drive wiper and the design of the wiper ensure stable operation of the drive system and high-quality window cleaning cab of traction rolling stock.

1. The system of electric drive wiper of the vehicle, particularly the driver of the traction rolling stock containing the gear motor to drive each of the wiper controls and the switch, wherein the system contains a voltage Converter on-Board network associated with automatic switch-off, overload protection, interacting with the mode switch, through which the finishing machine is connected with the shaft of each gear reducer, with machine finishing is installed on the gear of each gear reducer and is made in the form of a plate.

2. The drive system according to claim 1, characterized in that the overload protection is made in the form of a relay with a bimetallic plate.

3. The drive system according to claim 1, distinguishing the I, what gear gear reducers installed on the machine finishing, made of dielectric material.

4. The drive system according to claim 1, characterized in that the mode switch is made in the form of a switching device of a Cam type.

5. The wiper containing rubber brush secured in the elongated holder, the fastening element in the form of elastic curved plate, which is fixed to the hinge, with which is associated a parallelogram mechanism with two levers mounted on the shaft of gear reducer and associated jumpers, characterized in that the shaft of each gear reducer is made longer, one of the levers mounted to rotate on the bracket associated with the bevel gear on each shaft, and provided with a spring, one end fixed on the bracket, and the other on the lever, the second lever movably connected with the bracket, rigidly connected with the rear part of the shaft each gear reducer.



 

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