CN212455464U - Pneumatic shifting power control device - Google Patents

Abstract

The invention relates to an air pressure gear shifting power control device, which comprises a base, a filter, a water drain valve, an electromagnetic valve and a pressure switch, wherein the filter, the water drain valve, the electromagnetic valve and the pressure switch are fixedly arranged on the base, the water drain valve is arranged at a water outlet of the filter, an air path A, an air path B, an air path C, an air path D, a working outlet and a pressure relief outlet are arranged in the base, the input end of the air path A is an air inlet end, the output end of the air path A is communicated with an air inlet of the filter, an air outlet of the filter is communicated with the input end of the air path B, the output end of the air path B is communicated with an air inlet of the electromagnetic valve, a working port of the electromagnetic valve is communicated with the input end of the air path C, the pressure switch is arranged in the middle of, The gear shifting power source has good reliability, and the problem of high cost of the gear shifting power source of the gear shifting mechanism of the new energy vehicle without a compressed air source is solved.

Description

Pneumatic shifting power control device

Technical Field

The invention relates to a pneumatic gear shifting power control device, and relates to the field of pneumatic gear shifting of a new energy automobile transmission.

Background

In traditional automotive transmission field, the power supply of shifting uses hydraulic pressure as the main, and hydraulic pressure derives from the engine and drives the oil pump work and produce hydraulic pressure, and under general condition, even the engine idles, the rotational speed also can reach more than 700rpm, can drive the oil pump and produce sufficient pressure and flow drive derailleur through gas storage device and shift.

Along with the development of new energy automobile, the development of new energy automobile derailleur has also been paid attention to, but new energy automobile driving motor rotational speed is very low when low speed, utilizes driving motor to drive the pressure and the flow that oil pump work produced and is difficult to satisfy the demand of shifting gears, if with the electronic oil pump then with high costs, the energy consumption is big, if set up special gear shift small motor, receive a lot of restrictions, especially planetary gear derailleur gearshift. Because gas is easy to obtain, and the cost for generating compressed gas is low and environment-friendly, the pneumatic gear shifting mechanism is paid attention to, but in the field of new energy automobile transmissions, components such as an oil-water separator, an electromagnetic valve, a pressure sensor and the like which form a pneumatic control device are basically connected through an air pipe and a pipe joint at present, the size is large, the cost is high, the connection of the air pipe and the pipe joint is easy to lose efficacy under the influence of vibration and large temperature change under the vehicle running environment, and the pipeline is easy to pull during vehicle maintenance to break or loosen to lose efficacy. The sensor usually consists of a pressure sensing element and a signal processing unit, when the transmission shifts gears, a pressure signal is transmitted to a TCU (transmission controller), and the TCU gives a solenoid valve control signal according to the gear shifting requirement and the pressure signal. The processes of signal acquisition, processing, transmission and the like are long in time delay and are easy to interfere. At present, a small-sized vehicle does not have a compressed air source, and a high-integration air pressure control device with an air pressure generating device is urgently needed to solve the problems.

Disclosure of Invention

The invention aims to provide a pneumatic gear shifting power control device aiming at the defects.

The invention adopts the technical proposal that the pneumatic gear shifting power control device comprises a base, a filter, a water drain valve, an electromagnetic valve and a pressure switch which are fixedly arranged on the base, the outlet at the filter is installed to the valve that drains, gas circuit A has been seted up in the base, gas circuit B, gas circuit C, gas circuit D, the work export, the pressure release export, gas circuit A input is for going into the gas end, gas circuit A's output is linked together with the income gas port of filter, the gas outlet of filter is linked together with gas circuit B's input, gas circuit B's output is linked together with the air inlet of solenoid valve, the work mouth of solenoid valve is linked together with gas circuit C's input, pressure switch installs at gas circuit C middle part, gas circuit C's output is linked together with the work export, the pressure release mouth of solenoid valve is linked together with gas circuit D's input, gas.

Furthermore, an inflator pump is installed on the base, and an air outlet of the inflator pump is communicated with the air inlet end.

Further, the pressure switch comprises a pressure switch cavity, an adjusting bolt, a positioning plate, a pressing plate, an elastic body and a piston, the lower end of the pressure switch cavity is communicated with the middle part of a gas circuit C, the middle part of the gas circuit C is provided with a conductor block made of conductive metal, the conductor block is installed on the base, the contact part of the conductor block and the base is insulated, the outer end of the conductor block extends out of the base and is provided with a binding post, the inner end of the conductor block is positioned in the gas circuit C and is positioned under the piston, a sealing ring is arranged between the periphery of the piston and the inner part of the pressure switch cavity, the pressure switch cavity is processed on the base, the piston is arranged in the pressure switch cavity, the positioning plate is installed at the upper end of the pressure switch cavity and is fixedly connected with the base, the pressing plate is arranged under the positioning plate, the elastic body is, the vertical screw hole of seting up in locating plate middle part, adjusting bolt installs in the screw hole, and adjusting bolt the inner is connected with the clamp plate, all has seted up the air vent on locating plate and the clamp plate.

Furthermore, the binding post of the conductor block is connected with a motor negative electrode wire of the inflator pump through a lead, and the inflator pump is electrically connected with the TCU through a lead.

Further, the outlet of the water drain valve faces downwards.

Furthermore, the electromagnetic valve is a double-end three-way electromagnetic valve.

Further, the base is mounted on the transmission housing.

Further, the base is integrally formed with the transmission housing.

Compared with the prior art, the invention has the following beneficial effects: the structure is simple, the design is reasonable, the assembly volume is small, the cost is low, and the reliability is good; besides the basic functions of inflation, pressure regulation, filtration, air intake and air leakage, the smooth and air leakage conditions of the air path can be monitored in time through the on-off time and frequency of the pressure switch, and problems can be found and solved in time; the pressure switch piston can lift along with the change of the air pressure in the actuator, so that the pressure switch piston has certain capacity of smoothing the air pressure; the switch contact is surface contact, so that the switch is stable and reliable, the switch signal is not easily interfered, and the signal transmission is rapid, stable and reliable; the problem of the power source of shifting of new forms of energy vehicle gearshift that does not have compressed air source with high costs is solved.

Drawings

The invention is further described with reference to the following figures.

FIG. 1 is a schematic diagram of the structure of the apparatus;

FIG. 2 is a schematic view of the apparatus with a pre-filter;

FIG. 3 is a schematic view of the structure of the added check valve;

fig. 4 is a schematic structural view of the device with the gas storage device.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

In the figure: 1-a base; 101-gas path A; 102-gas path B; 103-gas path C; 104-gas path D; 105-a working outlet; 106-pressure relief vent; 107-gas path E; 2-a filter; 201-a filter element; 202-cup cover; 3-a water drain valve; 4-an electromagnetic valve; 5-a pressure switch; 501-adjusting bolts; 502-positioning plate; 503-a pressure plate; 504-pressure switch chamber; 505-an elastomer; 506-a piston; 6-conductor block; 7-an inflator pump; 701-the motor of the inflator; 8-a pre-filter; 9-a one-way valve; 10-gas storage means; 11-power supply terminal.

As shown in figure 1, the pneumatic shifting power control device comprises a base, a filter, a water drain valve, an electromagnetic valve and a pressure switch, wherein the filter, the water drain valve, the electromagnetic valve and the pressure switch are fixedly installed on the base, the water drain valve is installed at a water outlet of the filter, the water outlet of the filter is positioned at the bottom of a filter bowl of the filter, a gas path A, a gas path B, a gas path C, a gas path D, a working outlet and a pressure relief outlet are formed in the base, an input end of the gas path A is a gas inlet end, an output end of the gas path A is communicated with a gas inlet of the filter, a gas outlet of the filter is communicated with an input end of the gas path B, an output end of the gas path B is communicated with a gas inlet of the electromagnetic valve, a working port of the electromagnetic valve is communicated, the pressure relief mouth of solenoid valve is linked together with gas circuit D's input, and gas circuit D's output is linked together with the pressure release export, and the pressure release export can connect the muffler, also can follow the pressure release export and lead to other places that need use gas with the gas that lets out, nevertheless will guarantee that the gas circuit is smooth and easy.

In this embodiment, the periphery of the communication port of each element of the device is sealed, and the periphery of the connection part of each element and the gas path is sealed by installing a sealing gasket, a sealing ring or coating a sealing glue.

In this embodiment, install the pump on the base, the gas outlet of pump is linked together with going into the gas end, and gas circuit C middle part and pressure switch chamber lower extreme intercommunication.

In this embodiment, the pressure switch includes a pressure switch cavity, an adjusting bolt, a positioning plate, a pressing plate, an elastic body, and a piston, the lower end of the pressure switch cavity is communicated with the middle part of a gas circuit C, a conductor block made of conductive metal is arranged in the middle part of the gas circuit C, the conductor block is installed on a base, the part of the conductor block contacting with the base is injection-molded into a threaded cylinder, and is locked with the base through threads, or tightly-fitted and pressed for installation, or glued, preferably in threaded connection, the conductor block is insulated from the contact part of the base, the insulation mode is injection-molded on the surface of the contact part of the conductor block and the base, or coated with an insulating material or wrapped with an insulating material, preferably injection-molded, the outer end of the conductor block extends out of the base and is provided with a binding post, the inner end of the conductor block is located in the gas circuit C and, the piston sets up at the pressure switch intracavity, the locating plate is installed in pressure switch chamber upper end and is connected fixedly with the base, the clamp plate sets up in the locating plate below, the elastomer sets up between piston and clamp plate, its both ends are supported respectively and are leaned on clamp plate and piston, the piston is metalwork it and is connected with the power terminal of installing on the base through the wire, the vertical screw hole of seting up in locating plate middle part, adjusting bolt installs in the screw hole, adjusting bolt inner is connected with the clamp plate, the air vent has all been seted up on locating plate and the clamp plate.

In this embodiment, the terminal of the conductor block is connected to a negative electrode line of a motor of the inflator pump through a lead, and the inflator pump is electrically connected to the TCU through a lead; the terminal of the conductor block can be electrically connected to an input terminal of the TCU via another wire. The TCU can monitor the working condition of the charging air pump from the on-off of the motor or the parallel lead-out line of the conductive block, so as to know the health condition of the air path, facilitate finding out the problem, and timely replace or clean the filter element if the filter element of the filter is blocked.

In this embodiment, the elastic body includes, but is not limited to, a compression spring, a belleville spring, a wave spring, a rubber block, preferably a metal compression spring; the locating plate is fixedly connected with the base, the fixedly connecting mode comprises but is not limited to self-threaded locking of the pressing plate, bolt locking, glue gluing or welding, preferably, the pressing plate is self-threaded locking, the outer end of the adjusting bolt is provided with shapes of convenient-to-use tools such as an inner hexagon, an outer hexagon, a cross, a straight line or a plum blossom and the like, lines can be arranged on the side face to facilitate manual rotation, the adjusting bolt rotates clockwise and anticlockwise to enable the bolt to advance or retreat, and the compression amount of the elastic body is adjusted through the pressing plate.

In this embodiment, the drain valve may be of a differential pressure type, an automatic type or a manual type, preferably a differential pressure type, and the outlet of the drain valve faces downward after installation, so that when the pressure in the filter bowl drops to a certain degree, the condensed oil and water automatically flows out from the drain valve port under the action of gravity.

In this embodiment, the solenoid valve is a double-end three-way solenoid valve, and the type of the solenoid valve can be selected according to gear requirements.

In this embodiment, the base may be mounted on the transmission housing, and the base may be made of metal or nonmetal, and preferably, the base is made of conductive metal.

In this embodiment, the base may be integrally formed with the transmission housing.

In this embodiment, the filter is fixed to the base by means of, but not limited to, self-screwing, glue-gluing, and tight-fitting, preferably self-screwing.

As shown in FIG. 2, a pre-filter may be added to the inlet end of the inflator to prevent larger solids from entering the inflator and causing a reduction in the service life of the inflator. The side of the inflator pump on the base is provided with a preposed filter gas, the filter is fixedly connected with the base, the gas inlet of the preposed filter is communicated with the atmosphere, the gas outlet of the preposed filter is communicated with one end of a gas path E arranged on the base, and the other end of the gas path E is communicated with the gas inlet of the inflator pump. The arrangement is particularly suitable for use in harsh environments

As shown in fig. 3, a check valve may be installed in the air path a or the air path B, and preferably, the check valve is installed in the air path a to prevent the gas of the gas device from flowing backwards due to the air leakage of the inflator pump, thereby frequently starting the motor. The gear shifting mechanism is particularly suitable for the gear shifting mechanism with stable air source pressure and gear control satisfied air source pressure.

As shown in fig. 4, a gas storage device may be disposed on the base, the gas inlet of the gas storage device is communicated with the gas path a or the gas path B, the gas storage device includes a piston block, a spring, and a sealing ring is disposed on the periphery of the piston block. The gear shifting mechanism is suitable for gear shifting mechanisms with large gas consumption, fast air intake requirement or frequent gear shifting

In this embodiment, the positioning plate, the pressing plate, the elastic body, and the adjusting bolt are made of conductive materials, the power terminal is fixedly connected to the base and is conductive, the power terminal can be connected to the positive electrode of the power of the TCU-controlled inflator motor, or connected to the negative electrode of the power, preferably connected to the negative electrode of the power, the positive electrode of the power of the inflator motor is connected to the positive electrode of the power of the TCU-controlled inflator motor through a wire, and the positive and negative electrode wires of the electromagnetic valve are respectively connected to the positive and negative electrodes of the gas inlet and outlet ends of the TCU-.

The working principle is as follows:

in an initial state, the air pressure of the air passage C is 0, the small piston presses the conductor block under the action of elastic force of the elastic body, and therefore the power supply wiring terminal is electrically connected with the negative wire of the motor in a conductive mode sequentially through the base, the positioning plate, the pressing plate, the elastic body, the small piston and the conductor block.

When the transmission gear shifting mechanism needs to be inflated, the TCU controls the power supply of the inflator pump to be switched on, the power supply returns to the negative electrode of the TCU through the motor positive electrode wire, the motor negative electrode wire, the conductor block, the small piston, the elastic body, the pressing plate, the positioning plate, the base and the power supply wiring terminal in sequence, so that a loop is formed, the motor works, and the inflator pump generates compressed gas.

Compressed gas enters the filter through the gas inlet and the gas path A, condensed oil and water sink to the bottom of a filter bowl of the filter, other substances with specific gravity larger than that of the gas filtered by a filter element of the filter sink to the bottom of the filter bowl or are attached to the outer surface of the filter element, and substances with specific gravity smaller than that of the gas are suspended in a space in the filter bowl outside the filter element or are attached to the outer surface of the filter element; when the pressure of the air source is reduced to a certain degree, the pressure in the cup is reduced, the water drain valve is opened, the oil and water automatically flow out under the action of gravity, and other substances partially sinking to the bottom also flow out; clean compressed gas enters the gas path B through the filter element.

When the gear shifting mechanism is used for air intake, the air inlet of the electromagnetic valve is opened, and compressed air enters the air passage C from the air passage B through the electromagnetic valve and enters the transmission actuator or other air devices through the working outlet; assuming that the normal working pressure range of the actuator is [ P1, P2 ], the static friction resistance of a piston sealing ring is f, the loading area of a sliding position of a piston of a pressure switch cavity is S1, the sealing contact area of the piston and a conductor block is S2, the elastic body initial state elastic force is N0, the maximum elastic force of the elastic body in the piston stroke range is N1, the gravity of the piston, the sealing ring, the elastic body and a pressure plate is small and negligible, P2= (N0+ f)/(S1-S2), P1= (N1-f)/S1, when the pressure P in an air passage C is not larger than (N0+ f)/(S1-S2), the piston is pushed upwards by compressed gas and separated from the conductor block, so that the power supply of the motor of the air pump is disconnected, the motor is turned off, and information is fed back to a; when the pressure P in the actuator is ≦ (N0-f)/S1, the small piston slides downwards under the action of the elastic force of the elastic body and is in contact with the conductor block, the motor continues to work until P ≧ (N0+ f)/(S1-S2), the power supply of the air inlet end of the electromagnetic valve is disconnected again, information is fed back to the transmission, and the operation is repeated, so that the pressure of the air passage is kept within a designed range.

When the actuator or other gas devices need to be decompressed for gear shifting, the power supply of the motor is disconnected by the TCU to stop the motor, and the TCU controls the electromagnetic valve to open the decompression outlet, so that the gas in the actuating gas is sequentially leaked from the base work outlet, the gas circuit C, the electromagnetic valve, the solenoid valve air leakage port and the gas circuit D.

The device is particularly suitable for the whole vehicle without an air source device and a one-control-two or one-control-three linkage interlocking gear shifting mechanism.

The device solves the problem that the gear shifting power source of the gear shifting mechanism of the new energy vehicle without a compressed air source is high in cost.

The device is not provided with any air pipe and joint, all standard parts are easy to obtain at low cost, and the processing technology of non-standard parts is simple, so the assembly has small volume, low cost and good reliability.

This device simple structure, powerful, there is not complicated control circuit, TCU also only realizes control through the simple break-make of power to this device, in the aspect of the function, except having basic aerifing, the pressure regulating, filter, admit air and lose heart function, unobstructed and the gas leakage condition of gas circuit can in time be monitored to break-make time and frequency through pressure switch, in time seek the problem and in time solve the problem, the pressure switch piston can be along with the atmospheric pressure change in the actuator and go up and down, thereby certain mild atmospheric pressure's ability has.

The switch contact of the device is surface contact, so that the device is stable and reliable, the switch signal is not easy to be interfered, and the signal transmission is rapid, stable and reliable.

If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A pneumatic shifting power control device is characterized in that: including base and fixed mounting filter on the base, the valve that drains, solenoid valve, pressure switch, the outlet at the filter is installed to the valve that drains, gas circuit A has been seted up in the base, gas circuit B, gas circuit C, gas circuit D, the work export, the pressure release export, gas circuit A input is for going into the gas end, gas circuit A's output is linked together with the income gas port of filter, the gas outlet of filter is linked together with gas circuit B's input, gas circuit B's output is linked together with the air inlet of solenoid valve, the work mouth of solenoid valve is linked together with gas circuit C's input, pressure switch installs at gas circuit C middle part, gas circuit C's output is linked together with the work export, the pressure release mouth of solenoid valve is linked together with gas circuit D.

2. The pneumatic shifting power control device according to claim 1, characterized in that: an inflator pump is installed on the base, and an air outlet of the inflator pump is communicated with the air inlet end.

3. The pneumatic shifting power control device according to claim 1, characterized in that: the pressure switch comprises a pressure switch cavity, an adjusting bolt, a positioning plate, a pressing plate, an elastic body and a piston, wherein the lower end of the pressure switch cavity is communicated with the middle part of an air passage C, a conductor block made of conductive metal is arranged in the middle part of the air passage C, the conductor block is installed on a base, the contact part of the conductor block and the base is insulated, the outer end of the conductor block extends out of the base and is provided with a binding post, the inner end of the conductor block is positioned in the air passage C and is positioned under the piston, a sealing ring is arranged between the periphery of the piston and the inner part of the pressure switch cavity, the pressure switch cavity is formed by processing the pressure switch cavity on the base, the piston is arranged in the pressure switch cavity, the positioning plate is installed at the upper end of the pressure switch cavity and is fixedly connected with the base, the pressing plate is arranged, the vertical screw hole of seting up in locating plate middle part, adjusting bolt installs in the screw hole, and adjusting bolt the inner is connected with the clamp plate, all has seted up the air vent on locating plate and the clamp plate.

4. The pneumatic shifting power control device according to claim 3, characterized in that: the wiring terminal of the conductor block is electrically connected with a motor of the inflator pump through a wire, and the inflator pump is electrically connected with the TCU through a wire.

5. The pneumatic shifting power control device according to claim 1, characterized in that: the outlet of the water drain valve faces downwards.

6. The pneumatic shifting power control device according to claim 1, characterized in that: the electromagnetic valve is a double-end three-way electromagnetic valve.

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