专利摘要:
Druckmittel-Bremsanlage für den Anhänger eines Fahrzeuges mit einem Anhänger-Vorratskreis, der mit dem Vorratskreis des Zugwagens verbindbar ist und einem elektrischen Anhänger-Bremskreis, der mit dem elektrische Bremssignale aussteuernden Bremssystem und der elektrischen Versorgung des Zugwagens verbindbar ist. Es ist eine elektro-pneumatische Schalteinrichtung mit einer Oder-Schaltung vorgesehen, über die in Verbindungmit einer elektronischen Steuereinheit des Anhängers die Bremsen des Anhängers festgesetzt werden, wenn das AnhängerBremssystem vom Vorratskreis des Zugwagens und/oder von den elektrischen Bremssignalen oder der Stromversorgung des Zugwagens getrennt wird. (Fig 1).
公开号:SU1620046A3
申请号:SU864027282
申请日:1986-04-10
公开日:1991-01-07
发明作者:Ротен Иоганн;Шульт Манфред
申请人:Вабко Вестингхауз Фарцойгбремзен Гмбх (Фирма);
IPC主号:
专利说明:

The invention relates to the automotive industry.
The purpose of the invention is improving reliability, 5
In Fig.1 shows a functional diagram of the electro-pneumatic brake device of a car trailer; figure 2 is the same option.
The supply line 1 with the connecting head 2 is connected to the supply circuit of the vehicle. The electric brake circuit of the trailer through the electric signal wire 3 and the electrical connection 4 15 is connected to the electric brake control system of the car brake system. The electrical part of the trailer brake system is supplied from the vehicle’s electric power source 20. A valve switching device 5 with an electric controlled winding 6 of the electromagnetic valve 7 and a pneumatically controlled input 8 of the air-25 distributor 9 is located in the pneumatic supply circuit. The winding 6 through an electric wire 10 is connected to an electronic control unit 11 connected through an electric signal wire 3 to control the electrical braking signals of the brake system and the vehicle’s power supply. The control input 8 through the pipeline 12 and 35 highway 1 is connected to the supply circuit of the car.
In the absence of pressure in the control input 8, the air distributor 9 connects the receiver 13 through the pipe-lead wires 14 to 18 with the brake cylinder 19 of the trailer. With a pressure-loaded control inlet 8, an air distributor 9 connects the vehicle’s working medium supply circuit through line 1 and pipelines 15 and 14 to the receiver 13. Air is then released from the pipeline into the atmosphere.
! O / 7 50
The solenoid valve 7 connects the receiver 13 when the winding 6 is de-energized through the pipes 14, 15, 20, and 18 to the brake cylinder 19. When applying electric current to the winding 6, the connection of the receiver 13 to the brake cylinder 19 is blocked. From the duct 20, only air is released into the atmosphere.
A two-line valve 21 located between pipelines 16 and 20, in the form of a double-acting check valve, respectively connects the pressure-transmitting pipeline or both pressure-transmitting pipelines 16, 20 to the pipeline 17. A throttle 22 located in the pipeline 17 throttles the flow of the working medium through the pipeline 18 to the brake cylinder 19.
Between the pipelines 17 and 18, a manually controlled brake release valve 23, depending on the position of the control element, connects the pipelines 17 and 18 or blocks the pipeline 17 and connects the pipeline 18 to the atmosphere.
The receiver 13 through a pipe 24 is connected to an electromagnetic valve 25 with a winding 26, through a pipe 27 connected to a brake cylinder 19, The coil 26 of a valve 25 is connected by a wire 28 to an electronic control unit 11, according to the signals of which the valve 25 regulates the pressure of the working medium supplied to the brake cylinder 19 through the pipe 27. In the de-energized state of the winding 26, the brake cylinder 19 is connected through the pipe 27 via the outlet 29 of the valve 25 to the atmosphere. The pipe 24 passing from the receiver 13 is then blocked relative to the pipe 27,
Located between pipelines 27 and 18, a two-line valve 30 connects the pipe 27 or 18 through the pipe 31 to the brake cylinder 19. From the brake cylinder 19, either through the pipes 31 and 27 and the valve 25, or through the pipes 31 and 18 and the valve switching device 5, the release air to the atmosphere.
The braking signals transmitted by the electronic control unit 11 to the winding 26 of the valve 25 can be adjusted depending on the load and / or the number of revolutions of the trailer wheels by the signals supplied to the electronic control unit 11 from the respective sensors. The winding 6 of the valve 7 supplied from the current control unit 11, depending on the operating condition of the trailer, is energized or de-energized.
Figure 2 shows the pneumatic electric switch 32 used in the valve switching device 33 in combination with a check valve 34. The switch 32 responds to the supply pressure in the line 1 so that an electrical signal is supplied to the electronic control unit 11. Then, an electric current is supplied from the electronic control unit 11 through the electric wire 10 to the winding 35 of the electromagnetic valve 36, due to which the valve 36 occupies a switching position in which the connection of the receiver 13 with the brake cylinder 19 is blocked. The check valve 34 isolates when the head 2 is disconnected or when the vehicle is stationary, the trailer line 1 from the atmosphere.
The electronic control unit 11 has a control circuit through which the windings 6 and 35 of the valve switching devices 5 and 33 are connected to the electrical signal wire · 3 and / or to the power supply wire.
The device operates as follows.
In driving mode, the trailer braking system through the head 2 and connection 4 is connected to the brake system of the car. With the supply pressure available in line 1, the air distributor 9 occupies a switching position in which the receiver 13 is filled through pipelines 15 and 14 from line 1. Electric current is supplied from the electronic control unit 11 to the winding 6 of the valve 7, due to which valve 7 occupies the switching position, in which the pipeline 15 is blocked relative to the pipelines 20, 17 and 18.
Braking signals are supplied to the electronic control unit 11 from the vehicle’s brake system, exciting the current through the wire 28 to the coil 26 of the valve 25, as a result of which the valve 25 supplies the adjusted brake pressure from the receiver 13 through the pipes 24, 27 and 31 to the brake cylinder 19. Pipelines 16, 17 and 20 in driving mode through valve 7 and air diffuser 9 are connected to the atmosphere.
When disconnecting the head 2 from the highway 1 and - pipe 12 is the release of air into the atmosphere. Following this, the air distributor 9 occupies a switching position in which the receiver 13 is connected through the pipelines 14 to 18 and 31 to the brake cylinder 19.
When disconnecting connection 4, i.e. upon interruption of a vehicle-controlled brake signal and / or. when the power supply from the vehicle to the trailer is interrupted, no electric current is supplied to the winding 6 of valve 7 from the electronic control unit. In this case, the valve 7 occupies a switching position in which the receiver 13 is connected through the pipelines 14, 15, 20, 17, 18 and 31 to the brake cylinder 19.
In both cases, i.e. when disconnecting the head 2 or connecting 4 due to the connection of the receiver 13 with the brake cylinder 19, the trailer brakes are in the installed position. This also happens when both the head 2 and the connection 4 are disconnected, since the receiver 13 is connected to the brake cylinder 19 through pipelines 14 - 1b, as well as 20, 17, 18 and 31
The throttle 22 located in the pipeline 17 slows down the decrease in pressure in the brake cylinder 19, due to this, instantaneous braking of the trailer during driving is prevented when the trailer is powered off from the vehicle.
When parking, i.e. with unconnected head 2 and connection 4, but with the vehicle stationary, the trailer brakes are also in the installed position if there is no power supply from the vehicle.
According to figure 2, the trailer brakes in the described operating conditions are also in the installed position. This occurs when the air is exhausted from the highway 1 due to the fact that the pneumatic-electric switch 32 interrupts the signal supply to the electronic control unit 1T and thereby the winding 35 of the valve 36 is de-energized. In this case, the valve 36 occupies the f - - d switching position, in which the receiver 13 is connected to the brake cylinder 19.
162Q046
When the braking signals controlled by the vehicle * are interrupted, respectively, in the absence of power supply from the vehicle, coil 35 of valve 36 is also de-energized.
The brakes installed in a certain position by means of valves 7 and 36 and the air diffuser 9 can be released by manually controlling the valve 23. Due to this, air is released into the atmosphere from the brake cylinder 19 through pipelines 31 and 18. With 15 (the trailer can then be maneuvered in a disconnected state .
权利要求:
Claims (2)
[1]
Claim
...... 20
1. An electro-pneumatic brake device of a car trailer containing wheel brake cylinders connected via a dual-line valve and two brake lines 25 to the receiver, while the first brake line is connected to a pneumatically controlled air distributor, which serves to selectively connect the receiver to the first 30 brake line and to the supply line, connected through the connecting head to the pneumatic supply circuit of the vehicle, as well as to communicate the first brake 35 mag If the pressure in the supply line is reduced, an electromagnetic valve is built into the second brake line, which informs the second brake line with atmosphere and is connected by its winding to one output of the electronic control unit, to the inputs of which an electrical signal wire and / or electric wire are connected power supply, connected by a connector to the vehicle’s power circuit, characterized in that., in order to increase reliability, it is equipped with auxiliary electromagnetic m valve, the winding of which is connected to another output of the electronic control unit, and an additional two-line valve, to the output of which the first brake line is connected via a throttle, and the inputs of the additional two-line valve are connected respectively through the air distributor and auxiliary electromagnetic valve to the receiver, the control unit equipped with a control circuit, providing, when there is a voltage at the input of the control unit, an auxiliary power supply to the winding the electromagnetic solenoid valve, which reports in the active state when there is voltage in the electric signal wire and / or electric power wire, the portion of the first brake line between the auxiliary electromagnetic valve and the additional dual-valve valve with the atmosphere, and in a de-energized state when there is no voltage in the electric signal wire and / or electric power wire - section of the first brake line between the auxiliary solenoid valve and additional m two-valve valve with receiver.
[2]
2. The device according to claim 1, characterized in that it is equipped with a manual release brake valve installed in the first brake line in the area between the two-line valves.
1620046
类似技术:
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SU1620046A3|1991-01-07|Pneumoelectric brake arrangement for road trailer
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US3054476A|1962-09-18|Brake control mechanism
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同族专利:
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法律状态:
优先权:
申请号 | 申请日 | 专利标题
DE19853514949|DE3514949A1|1985-04-25|1985-04-25|PRESSURE BRAKE SYSTEM FOR THE TRAILER OF A VEHICLE|
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