59 results about "Relay valve" patented technology

A mine dump truck wet disc brake hydraulic system, including main control valve, one end of main control valve is connected pressure oil source, the other end is connected front brake system and middle and rear brake system, front brake system includes brake pedal, front axle proportional control valve group, front axle brake valve group and front brake cylinder, middle and rear brake system includes brake pedal, slow running valve, middle and rear axle brake valve, rear axle proportional valve group, relay valve group, rear axle brake cylinder and middle axle brake cylinder, the utility model discloses a mine dump truck wet disc brake hydraulic system can realize manual operation brake and line control remote brake function, reaches unmanned operation's requirement, is used for unmanned vehicle or auxiliary driving, and in order to adapt to the distance of middle and rear axle of three axle vehicle and the distance of main brake valve group is longer, two relay valve groups are added, brake corresponding speed is improved, faster brake response is realized, makes travel more safe.

The invention provides a pneumatic valve device, a pneumatic brake system and a commercial vehicle. The pneumatic valve device comprises a first air pressure port used for receiving air source pressure of a lower pressure value; the second air pressure port is used for transmitting trailer braking pressure; the third air pressure port is used for outputting trailer brake control air pressure; the first air pressure port is connected with the third air pressure port through a working cavity of the relay valve; the fourth air pressure port is used for receiving the air source pressure with the higher pressure value; the control end of the energy supply valve is connected with the first air pressure port, an air inlet of the energy supply valve is connected with the fourth air pressure port, an air outlet of the energy supply valve is connected with the second air pressure port, the energy supply valve is constructed to make the air inlet and the air outlet communicated when the pressure of the control end of the energy supply valve is larger than an opening threshold value, and the opening threshold value is smaller than the first pressure value. The air source pressure with the higher pressure value can be introduced into the trailer braking system, the energy storage capacity of the trailer braking system is improved, the trailer braking response time can be shortened, and the whole vehicle braking efficiency is improved.

This utility model relates to the field of pilot-operated relay valves, specifically a pilot-operated relay valve for a control system. The utility model includes a valve body with a first through-hole. A sealing cap is provided at one end of the first through-hole. A first inlet and a second inlet are connected to one side of the first through-hole, and an outlet is connected to the side of the first through-hole away from the first inlet. A control chamber is provided at the end of the first through-hole away from the sealing cap. A piston plate is slidably connected to the control chamber, and a valve core is fixedly connected to the piston plate, extending into the first through-hole. A first locking block is provided within the first through-hole, and a second elastic element is fixedly connected to the sealing cap. A steel ball is provided on the second elastic element, and a second through-hole is provided on the first locking block. A second locking block is provided within the first through-hole, and a third through-hole is provided on the first locking block. A first conical surface is provided within the third through-hole, and a second conical surface is provided on the middle section of the valve core. The technical solution of this utility model can improve the problem of damage to Y-type gaskets after long-term use.

The present invention relates to a fail-safe bypass valve assembly (1) for a pneumatic parking brake unit (120) of an electronically controllable pneumatic braking system (100), comprising: a first path (2) with an electromagnetic monostable valve (6); a second path (4) with a bistable valve unit (12); and a relay valve (10); wherein the first path (2) and the second path (4) receive a main parking brake pressure (pPA) from the pneumatic parking brake unit (120), wherein, at a first stable switching position of the bistable valve unit (12), the main parking brake pressure (pPA) is controlled at the relay valve control port (10.4) of the relay valve (10) independently of the switching position of the first monostable valve (6), and at a second stable switching position of the bistable valve unit (12), the relay valve control port (10.4) vents when the first monostable valve (6) is de-energized to vent at least one spring-loaded brake cylinder (125a, 125b).

The application provides a JZ-7 remote control braking system, which comprises a total air pipe, a first passage, a second passage and a third passage, a relay valve, an equalizing air cylinder, a first high-speed electric air valve, an overcharge air cylinder, a control device, a CCU and a remote network control unit, the total air pipe is connected with the overcharge pipe of the relay valve after being communicated with the first passage, and the gas outlet of the first passage is also communicated with the exhaust port of the overcharge air cylinder; the total air pipe is connected with the equalizing pipe of the relay valve after being communicated with the second passage, and the gas outlet of the second passage is also communicated with the first high-speed electric air valve and the equalizing air cylinder respectively; the total air pipe is connected with the cut-off pipe of the relay valve after being communicated with the third passage, and the train pipe of the relay valve is also connected with an electric air release valve. The application can realize remote networking operation of the braking system, and the locomotive can implement braking and relieving functions without operating the automatic brake valve.

This invention relates to an air backup braking system and a locomotive. The system includes: a backup switching valve with two positions: normal and air position; a backup pressure regulating valve; a pressure measuring point; a backup brake valve with three positions: braking, neutral, and release; a backup equalizing pressure cylinder; and a backup relay valve, used to output its A2 port pressure in real time according to the pressure of the equalizing cylinder when the air backup mode is activated. Specifically, in the normal position of the backup switching valve, ports A2 and A3 of the backup switching valve are connected, cutting off the main air supply to the backup brake valve, venting the pressure at the control port C1 of the first, second, and third switching valves, and outputting a high-level signal. In the air position of the backup switching valve, ports A1 and A2 are connected, and the main air supply is simultaneously output through the pressure at port A2 to the control port C1 of the first, second, and third switching valves, and outputting a low-level signal. This invention solves the technical problem of the inability to switch in real time after a locomotive electro-pneumatic brake failure.

The application relates to a multi-mode brake system of a special vehicle, which comprises an emergency relay valve, a first relay valve, a second relay valve, an ABS controller, a foot brake valve, a hand brake valve, a normally open electromagnetic valve, a normally closed electromagnetic valve, an electric control proportional valve, a first shuttle valve, a second shuttle valve, a third shuttle valve, an air compressor and a plurality of brake chambers. The application can realize various modes of braking, two-by-two interlocking, automatic switching according to the walking mode of the vehicle, satisfy the overall brake system, can not only guarantee traction braking, but also does not affect the braking work when the vehicle independently walks; and is reasonably designed, can satisfy the integrated brake system of a vehicle under various walking mode states, is complete in function and improves work efficiency.

The utility model discloses a kind of electrical double control brake systems of remote control loader, it belongs to engineering machinery technical field.It solves the defect that human driving control cannot adapt to narrow space operation, operation under dangerous environment in the conventional loader braking of prior art.Its main structure includes air source assembly, air source assembly is connected with parking component and control component respectively, control component is also connected with the execution component for controlling vehicle brake, control component includes gas brake valve, relay valve, proportional solenoid valve and shuttle valve, the air outlet of air source assembly is connected with gas brake valve, relay valve and proportional solenoid valve respectively, gas brake valve is connected in parallel with relay valve, and the two air inlets of shuttle valve are connected with gas brake valve and relay valve respectively, the signal end of relay valve is also connected with proportional solenoid valve.The utility model is mainly used on loader and other engineering machinery.

The present application provides a kind of tractor redundancy safety air pressure brake system, the proportional relay valve is used to when electronic brake system normal, according to the pressure correspondence of pre-stored control port and outlet, and the pressure value of actual control port, the pressure of output to ABS solenoid valve inlet is decided, so as to adjust the braking force of left and right sides, to adjust the situation of running deviation in vehicle braking process;When electronic brake system fails, the outlet of proportional relay valve is communicated with inlet, and the outlet air pressure of electronic brake system acts on ABS solenoid valve through proportional relay valve, realizes the braking of front axle, to ensure the remaining braking efficiency under the condition of electronic brake system failure, achieves redundancy brake effect, effectively improves the reliability of tractor safety brake system.

The utility model discloses deburring equipment for an automobile anti-lock relay valve shell, which relates to the technical field of deburring and comprises an equipment support, a working table is fixedly mounted at the upper end of the equipment support, a gantry support is fixedly mounted at the upper end of the working table, and a dust guide component is slidably mounted on the gantry support. The dust guide assembly is composed of a taper pipe, a protective net, a connecting pipe and a first connecting frame, the protective net is fixedly installed on the inner wall of the taper pipe, the connecting pipe is fixedly installed at the upper end of the taper pipe, and the first connecting frame is fixedly installed at the upper end of the connecting pipe. And meanwhile, the connecting assembly is connected with dust collection equipment, metal dust generated in the polishing and deburring process can be collected and treated, so that the dust is prevented from floating in the air for a long time, the probability that the dust is inhaled into the body by surrounding workers can be reduced, and the body health of the surrounding workers is finally facilitated.

A brake system includes an air production module, a trailer control module, a park brakes relay valve and a supply coupling head for supplying air under pressure to brakes of a trailer. A trailer brakes relay valve is permanently supplied with air under pressure and controls supply of air under pressure to the supply coupling head. The trailer brakes relay valve has two control input ports. When control air is applied to either one or both of the control input ports of the trailer brakes relay valve, the trailer brakes relay valve supplies air under pressure to the supply coupling head. When no control air is applied on both of the control ports of the trailer brakes relay valve, the trailer brakes relay valve does not supply air under pressure to the supply coupling head.

The utility model belongs to hand brake relay valve technical field, concretely relates to a shockproof noise reduction hand brake relay valve support, including support body, the top surface of support body is equipped with damping spring, the top of damping spring is connected with fixed frame, and the relay valve is placed in the top of fixed frame, and the relay valve bottom screw rod is connected with the nut of fixed frame screw thread, the top of nut abuts on support body bottom, the top surface of support body top surface is equipped with connecting lug, the surface of connecting lug is connected with the protective cover of first bolt screw thread, and the surface of protective cover is connected with the fixed cover of open end top surface. The utility model, through the mutual cooperation between protective cover, fixed cover, side plate, sliding slot, sliding block, adjusting Tuo, second bolt, rubber sleeve, first connecting tongue, threaded tube and second connecting tongue, utilize fixed cover and adjusting Tuo to clamp and fix the position of pipeline to be connected with relay valve, further avoid the loose of relay valve and pipeline connecting part when running, further influence the stability of vehicle.

The invention relates to an electropneumatic brake pressure regulator (1) comprising: an electronic control unit (3); an electropneumatic valve assembly (2) connected to the first supply connection (9) for receiving a first supply pressure (pS) and configured to provide a first brake pressure (pB1) to the first passage connection (5), the electropneumatic valve assembly comprising an electropneumatic pilot control unit (11), a redundant valve assembly (15) and a relay valve unit (13), the electropneumatic brake pressure regulator (1) comprises a single housing (29), and wherein the electropneumatic pilot control unit (11), the redundant valve assembly (15) and the relay valve unit (13) are combined within the housing (29). The invention also relates to an electropneumatic brake system (200), a vehicle (300) and a method (400) for providing redundant functionality of an electropneumatic brake system (200).

A trailer control valve (300) for a towing vehicle of a trailer is disclosed. The trailer control valve (300) comprising a pneumatic input port (310) for receiving a control pressure (101); an electronic input port (320) for receiving an electronic brake signal (150); a pressure sensor (330); a relay valve relay valve (340) with a control port (345); a first solenoid valve (350) and a second solenoid valve (360); a pressure supply port (370); and a trailer coupling terminal (380) for providing a brake pressure and / or a supply pressure to the trailer. The first solenoid valve (350) and the second solenoid valve (360) are arranged to forward, in a primary mode, the control pressure (101) to the control port (345) of the relay valve, and to interrupt, in a secondary mode, the control pressure and to connect the control port of the relay valve to the pressure supply port.

The utility model relates to the field of locomotive overhauls discloses a mobile locomotive brake no -power debugging device. The device includes the cabinet body and sets up in its power, operating platform and removal wheel, is equipped with the total wind interface of connecting outside air source in the cabinet body, is connected electromagnetic valve group and relay valve through first, second pipeline respectively, through the gain and loss electricity of control easing, brake, neutral electromagnetic valve, accurately adjusts the balanced air cylinder pressure, and utilizes the relay valve to make the train pipe pressure automatic following balanced pipe pressure change, realizes brake, easing and pressure maintenance, the sensor installed on the balanced pipe and train pipe feeds back the pressure signal to the control unit, forms closed loop control, and automatically completes performance test and leakage diagnosis. The utility model can independently, efficiently complete the state detection of locomotive brake, has the advantages of high integration, simple operation, accurate and reliable detection.

The application discloses a multi-stage brake system and a locomotive vehicle system with the same. The multi-stage brake system comprises: an air cylinder for outputting air pressure; a pressure adjusting device comprising a first adjusting valve body and a second adjusting valve body connected to the air cylinder respectively and in parallel with each other, and a first electromagnetic valve connected to the first adjusting valve body and the second adjusting valve body simultaneously; and a relay valve comprising a first input end connected to an output end of the pressure adjusting device, a second input end connected to the output end of the pressure adjusting device through a second electromagnetic valve, and a brake output end for outputting brake pressure. The multi-stage brake system can output at least four stages of brake force, effectively improve the average deceleration and shorten the brake distance.

The invention discloses a relay valve with a kink characteristic and a braking method thereof. The relay valve comprises a control pressure cavity, a relay valve BC pressure piston, a BC pressure acting part, a kink valve piston and a kink valve pressure limiting part. According to the braking method, after the right cavity of the right piston enters pressure, the right piston reversely moves leftwards under the action of the pressure of the left cavity and the right cavity, under the heavy load condition, a BC pressure acting part valve port is closed under the action of the right piston, along with rising of control pressure, a kink valve pressure limiting part is closed, and the pressure in the right cavity of the left piston is constant; the pressure of the left cavity of the left piston is larger than that of the right cavity of the left piston, the left piston moves rightwards under the action of the pressure of the left cavity and the right cavity, a valve port of the BC pressure acting part is pushed to be opened through the right piston till the valve port is completely opened, and the kink action is finished. The invention has the beneficial effects of simple principle, compact structure and high product integration level, and can be used for an SS-pole truck which is only provided with a tread brake.

This invention relates to a trailer control module and a trailer control valve device. The trailer control module (1) for an electro-pneumatic braking system (100) includes a trailer control valve device (TCV) (20), which is at least connected to a supply connector (2) for receiving supply pressure (pS) and providing trailer control pressure (pTC) to a trailer operating port (6). The TCV (20) includes a disconnect valve unit (26) for switching between a supply state that allows fluid communication between the supply connector (2) and a relay valve unit (30) and a disconnect state that throttles said fluid communication. The disconnect valve unit (26) includes a switching member (54) subjected to a first compressive force F1 defined by a pilot control pressure (pPC) and a counteracting second compressive force F2 defined by the trailer control pressure (pTC), wherein the switching member (54) switches to the disconnect state when the second compressive force F2 drops below a predetermined threshold TB.

In a brake system for a commercial vehicle, the commercial vehicle includes at least one steering shaft and at least one non-steering shaft, at least one pneumatic brake actuator associated with the steering shaft, at least one pneumatic brake actuator associated with the non-steering shaft, and an air handling unit. The brake system includes a redundant electro-pneumatic service brake system and an electro-pneumatic parking brake system, and the air handling unit includes two integrated pneumatic outputs configured to laterally independently actuate the pneumatic brake actuators on the steering shaft. At least one pneumatic brake actuator associated with the steering shaft is a pneumatic service brake actuator, and / or at least one pneumatic brake actuator associated with the non-steering shaft is a pneumatic spring brake actuator. The two integrated pneumatic outputs of the air handling unit include a two-channel pneumatic relay valve configured to pneumatically independently control a brake actuator on the steering shaft.

The invention provides an early warning method and device for a relay valve element sealing fault. The corresponding method comprises the steps that a force transducer is arranged at a valve seat of a relay valve element; acquiring a force applied to an inner valve port and a force applied to an outer valve port of the repeater valve core through the force measuring sensor; and according to the force borne by the inner valve port, a preset first threshold value, the force borne by the outer valve port and a preset second threshold value, early warning is conducted on the sealing fault of the relay valve element. According to the invention, early warning of valve port sealing failure can be realized, preventive replacement can be carried out before the valve core develops to sealing failure, and major faults of a train braking system caused by sealing failure of the valve core can be prevented.

The invention discloses a trailer control valve for a traction vehicle. The traction vehicle is configured to be coupled to a trailer. The trailer control valve comprises: a pneumatic input port for receiving a control pressure; an electronic input port for receiving an electronic brake signal; a pressure sensor; a relay valve with a control port; a first solenoid valve and a second solenoid valve; a pressure supply port; and a trailer coupling terminal for providing brake pressure and / or supply pressure to the trailer. Wherein the first solenoid valve and the second solenoid valve are arranged to: in a master mode, deliver a control pressure to a control port of the relay valve; in the assist mode, the control pressure is interrupted and the control port of the relay valve is connected with the pressure supply port based on the electronic brake signal and the actual pressure sensed by the pressure sensor.

This invention relates to an air backup braking system and a locomotive. The system includes: a backup pressure regulating valve, a primary braking cylinder, a backup brake valve, a backup equalizing cylinder, and a backup relay valve. Main air is connected to the train pipe via the backup pressure regulating valve, backup brake valve, backup equalizing cylinder, and backup relay valve. The relay valve connects the main air supply to the train pipe via the backup relay valve, and outputs train pipe pressure based on pressure changes in the backup equalizing cylinder. The backup brake valve has a release position, a primary braking position, a neutral position, and a braking position. In the release position, it connects the primary braking cylinder to the atmosphere and the main air supply to the primary braking cylinder. In the primary braking position, it connects the primary braking cylinder to the backup equalizing cylinder. In the neutral position, all air passages are cut off. In the braking position, it connects the backup equalizing cylinder to the atmosphere. This invention solves the technical problem of inaccurate pressure reduction control during primary braking.

The application provides a locomotive brake control system and a control method. The system comprises an average pipe control module, a brake cylinder control module and total air. When the charging and discharging electromagnetic valve or the second relay valve for controlling the brake cylinder fails, multiple redundancies such as a mechanical three-way valve, average pipe pressure and an emergency pressure increasing valve can be used to realize redundant control of the brake cylinder pressure.

The application discloses a multi-stage brake system and a locomotive vehicle system with the same. The multi-stage brake system comprises: an air cylinder for outputting air pressure; a pressure adjusting device comprising a first adjusting valve body and a second adjusting valve body connected to the air cylinder respectively and in parallel with each other, and a first electromagnetic valve connected to the first adjusting valve body and the second adjusting valve body simultaneously; and a relay valve comprising a first input end connected to an output end of the pressure adjusting device, a second input end connected to the air cylinder through a second electromagnetic valve, and a brake output end for outputting brake pressure. The multi-stage brake system can output at least four stages of brake force, effectively improve the average deceleration and shorten the brake distance.

The invention discloses a clothes dryer, which comprises a box body; a drying cylinder; a door body; a cylinder; a roller; the auxiliary moving module is used for applying air thrust to the air cylinder to push the air cylinder to move; the auxiliary moving module comprises a power source; an air inlet of the pressure reducing device is communicated with an air outlet of the power source; an air inlet of the pressure regulating device is communicated with an air outlet of the pressure reducing device, and the pressure regulating device outputs pilot pressure; the first channel is used for transmitting air; an air inlet of the relay valve is communicated with an air outlet of the power source, and an air outlet of the relay valve is communicated with an inlet of the first channel; a pilot port of the relay valve is connected with the pressure regulating device; the relay valve receives the pilot pressure output by the pressure regulating device and outputs driving air into the first channel according to the pilot pressure; an outlet of the first channel is correspondingly connected with the air cylinder, and air is driven to apply force to the air cylinder to push the air cylinder to move so as to control the extending roller.

Disclosed is an electro-hydraulic relay valve and corresponding valve assembly for a SAHR brake. First actuators are arranged to act on a first end of a floating valve spool and second actuators are arranged to act on a second end of the valve spool. One of the second actuators can receive hydraulic pressure from a pilot valve. In a first valve position, the pressure supply port communicates with the working port and the tank port is closed. In a second valve position, the pressure supply port is closed and communicates via a first sense line with one of the first actuators, the working port directs pressure to the tank port, the tank port communicates via a second sense line with another of the first actuators, and the working port communicates via a third sense line with one of the second actuators. In a central position, all three ports are closed.

This application provides a pneumatic valve device, a pneumatic braking system, and a commercial vehicle. The pneumatic valve device includes: a first air pressure port for receiving air source pressure; a second air pressure port for transmitting trailer braking pressure; a third air pressure port for outputting trailer braking control air pressure; a relay valve, the inlet of which is connected to both the first and second air pressure ports, and the outlet of which is connected to the third air pressure port; and a shut-off valve, the inlet of which is connected to the first air pressure port, and the outlet of which is connected to both the inlet of the relay valve and the second air pressure port. When the pneumatic valve device is in parking brake mode, the inlet and outlet of the shut-off valve can be shut off to block the gas output from the first air pressure port, and the second air pressure port can be connected to the third air pressure port via the working chamber of the relay valve. This application utilizes a shut-off valve to improve the safety of the vehicle in parking brake mode, prevent air source pressure leakage, and avoid wasting vehicle braking energy.

The application discloses a kind of gas-electric-hydraulic hybrid brake system and method suitable for electric drive chassis, system includes: gas to liquid brake circuit, including by gas path sequentially connected first gas storage element, first relay valve and brake master cylinder and the hydraulic brake of drive wheel, first gas storage element is connected compressed air source, brake master cylinder and hydraulic brake are connected, drive wheel is driven by wheel hub motor;Pneumatic brake circuit, including by gas path sequentially connected second gas storage element, second relay valve and the pneumatic brake of non-drive wheel;Electric control brake master valve, brake pedal is connected to control the communication or disconnection of gas to liquid brake circuit and pneumatic brake circuit, brake pedal is electrically connected vehicle controller, vehicle controller is electrically connected wheel hub motor, brake pedal controls wheel hub motor to carry out electric brake by vehicle controller.Due to the smaller volume of hydraulic brake, it is convenient to place in drive wheel, and the drive wheel driven by wheel hub motor is braked.

The invention discloses a rail vehicle emergency braking safety control device and method, and relates to the technical field of rail traffic vehicle braking system emergency braking. A speed sensor; the electronic braking control unit is used for acquiring the running speed of the railway vehicle and calculating a normal control signal and a safe switching control signal required by emergency braking of the railway vehicle based on the operation speed; the first-path pre-control pressure output unit is used for acquiring a normal control signal output by the electronic brake control unit and transmitting the normal control signal to the control electromagnetic valve to generate first-path pre-control pressure; the second-path pre-control pressure output unit is used for acquiring a safety switching control signal output by the electronic brake control unit and transmitting the safety switching control signal to the emergency switching electromagnetic valve to generate second-path pre-control pressure; and a relay valve. According to the invention, the relay valve is used for taking large output of the multi-stage emergency braking pressure of the rail train from the two paths of pre-control pressure, so that the running safety of the train is ensured.

The invention relates to a valve system (301) for a hydraulically braked towing vehicle that pulls a trailer. The valve system (301) comprises a relay valve (46), a changeover valve (10), and a brake control line (62). The relay valve (46) is actuated by means of a hydraulic control pressure, such that the level of a pneumatic brake pressure is set. This pressure is then supplied by the relay valve (46) to the pneumatic brake system of the trailer. Furthermore, the brake control line (62) pneumatically connects the relay valve (46) to the changeover valve (10). The brake control line (62) is also connected to a cavity (302) whose volume (V) is greater than 500 mm³. 3 .