CN202827550U - Valve structure and braking system and engineering vehicle - Google Patents
Valve structure and braking system and engineering vehicle Download PDFInfo
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- CN202827550U CN202827550U CN201220464135.XU CN201220464135U CN202827550U CN 202827550 U CN202827550 U CN 202827550U CN 201220464135 U CN201220464135 U CN 201220464135U CN 202827550 U CN202827550 U CN 202827550U
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Abstract
The utility model provides a valve structure. According to the valve structure, functions of a relay valve, a differential valve and an anti-skid brake system (ABS) valve are integrated to a valve, the valve can be used in a plurality of purposes, and therefore installation space is small, installation is convenient, the used quantity of installation supports, joints and pipelines can be reduced, and leakage points can be effectively reduced. Further provided are a braking system and an engineering vehicle.
Description
Technical field
The utility model relates to the engineering truck field, in particular to a kind of valve arrangement, comprise the brake system of this valve arrangement and the engineering truck that comprises this brake system.
Background technology
At present, relay valve, differential valve, ABS(Anti-lock Braking System anti-skid braking system are generally adopted in the chassis of engineering truck) valve dispersion installation.
Vehicle chassis pipeline connecting mode in the correlation technique, as shown in Figure 1, hand brake valve 6 ' connects the first control mouth of differential valve 2 ', foot brake valves 7 ' connects the control mouth of relay valve 3 ', air receiver 1 ' connects respectively the admission port of differential valve 2 ' and relay valve 3 ', the outlet of differential valve 2 ' connects the spring Parking chamber of both sides compressed air brake cylinder 5 ', the outlet of relay valve 3 ' connects respectively abs valve 4 ' import, abs valve 4 ' outlet connects the driving chamber of both sides compressed air brake cylinder 5 ', relay valve 3 ' outlet connects differential valve 2 ' control mouth and prevents the braking force stack, and whole pipeline reaches 11 more than.
There is following at least shortcoming in brake system in the correlation technique: relay valve, differential valve, abs valve disperse to install, and install complicated, consuming time many; Pipe joint is more, and the leak point that pipeline may occur also increases thereupon; The pipeline number is more, and assembly difficulty is high.
The utility model content
Technical problem to be solved in the utility model is, this enforcement is novel to provide a kind of valve structure, comprised the repertoire of relay valve, differential valve, abs valve, and designs simplification is convenient to install.
In view of this, the utility model provides a kind of valve arrangement, comprise valve body, the first spool, the second spool, the 3rd spool and control module, be provided with the first valve pocket, the second valve pocket and the 3rd valve pocket on the described valve body, the first spool is installed in described the first valve pocket; Described the second spool is installed in described the second valve pocket; Described the 3rd spool is installed in described the 3rd valve pocket; Be provided with import, pressure relief opening, the first outlet, the second outlet, the 3rd outlet and through-flow mouthful on the described valve body, be communicated with by described through-flow mouth between described the first valve pocket and described the 3rd valve pocket; Described the first spool can be controlled the break-make of described the first valve pocket and described import and described the first valve pocket and described pressure relief opening; The break-make of described the second valve pocket of the controlled system of described the second spool and described import and described the second valve pocket and described pressure relief opening; Described the 3rd spool can be controlled the break-make between described through-flow mouth and described the first outlet, and controls the break-make between described the first outlet and described the 3rd outlet; Described control module is controlled described the first spool, the second spool and the action of described the 3rd spool.
Control module is controlled the first spool and is laid respectively at different valve position with the 3rd spool, so that import is communicated with the first outlet or the first outlet is communicated with pressure relief opening, realizes running braking function and the switching of removing running braking function; Control module is controlled the second spool and is positioned at different valve position, so that import is communicated with the second outlet or the second outlet is communicated with pressure relief opening, realize parking braking function and the switching of removing parking braking function, control module is controlled the 3rd spool and is positioned at different valve position, prevents that also the stack of service brake power and braking during standstill power from damaging brake component.
In technique scheme, preferably, described control module comprises the first control mouth, the second control mouth and the 3rd control unit, pressure medium is passed to the end of described the first spool and is promoted to drive described the first spool action by described the first control mouth, to control the break-make between described import and described the first valve pocket; Pressure medium is passed to the end of described the second spool and is promoted described the second spool action by described the second control mouth, to control the break-make between described import and described the second valve pocket; Described the 3rd control unit by drive described the 3rd spool move to control described through-flow mouthful with described the first outlet between break-make, and control the break-make of described the first outlet and the described the 3rd between exporting.
Pressure medium enters into valve inner by the first control mouth and promotes the first spool, so that import is communicated with the first valve pocket; Pressure medium enters into valve inner by the second control mouth and promotes the second spool, so that import is communicated with the second valve pocket; Control the 3rd spool by the 3rd control unit and be positioned at the through-flow mouth of different control of valve positions and the described first break-make that exports, and control the break-make between the first outlet and the 3rd outlet.
Preferably, described the 3rd control unit comprises magnet coil and the 3rd spring, described magnet coil dead electricity, and described the 3rd spring promotes described the 3rd valve core reset, and described through-flow mouth is communicated with described the first outlet, described the first outlet and described the 3rd outlet disconnection; Described magnet coil gets electric, attracts described the 3rd valve core movement, and described the first outlet disconnects with described through-flow mouthful, and described the first outlet is communicated with described the 3rd outlet.
By the power on/off to magnet coil, so that the 3rd spool is positioned at different valve position, after the magnet coil outage, compressed the 3rd spring promotes the 3rd spool, realize the 3rd valve core reset function, thereby control the break-make between through-flow mouth and the first outlet, and the break-make between the first outlet and the 3rd outlet.
Preferably, an end of described the first spool is provided with first piston, and the other end is provided with the first spring; One end of described the second spool is provided with the second piston group, and the other end is provided with the second spring; Pressure medium is passed to described first piston and is promoted described first piston and the first valve core movement by described the first control mouth, and described the first spool compresses described the first spring; After the pressure medium release at described the first control mouthful place, described the first spring promotes described the first valve core reset; Pressure medium passes to described the second piston group by described the second control mouth, and promotes described the second piston group and described the second valve core movement, and the second spool compresses described the second spring; After the pressure medium release at described the second control mouthful place, described the second spring promotes described the second valve core reset.
Enter into from the first control mouth at pressure medium and to promote first piston in the valve body, first piston promotes the first valve core movement, and compress the first spring, after the first a control mouthful pressure medium that enters discharge, compressed the first spring promotes the first spool and resets, and the pressure medium that enters in the valve body from the first outlet promotes first piston, so that first piston and the first spool produce the gap, pressure medium enters into pressure relief opening from the gap, flows out valve body from pressure relief opening; Enter into promotion the second piston group in the valve body at pressure medium from the second control mouth, the second piston group promotes the second valve core movement, and compress the second spring, after the second a control mouthful pressure medium that enters discharge, compressed the second spring promotes the second spool and resets, and the pressure medium that enters in the valve body from the second outlet promotes the second piston, so that the second piston group and the second spool produce the gap, pressure medium enters into pressure relief opening from the gap, flows out valve body from pressure relief opening.
Preferably, described the second piston group comprises the second piston and the 3rd piston, forms the space of wedge shape or taper between described the second piston and described the 3rd piston.
When second controls mouth without the pressure medium effect, pressure medium can enter the gap between the second piston and the 3rd piston, pressure medium promotes the 3rd piston, the 3rd piston promotes the second spool, realize removing braking during standstill, prevent that service brake power and braking during standstill power from acting on the brake component simultaneously, causes the destruction of brake component.
Preferably, described valve body also is provided with the interlocking passage, and a port of described interlocking passage is communicated with described the first valve pocket, and the another port is communicated with described wedge shape between described the second piston and described the 3rd piston or the space of taper.
When second controls mouth without the pressure medium effect, the pressure medium that enters in the first valve pocket from import can enter in the second valve pocket through the interlocking passage, by promoting the second piston and then promoting the second spool, realize removing braking during standstill, prevent that service brake power and braking during standstill power from acting on the brake component simultaneously, causes the destruction of brake component.
Preferably, described the first spool and described the first valve pocket form normally closed valve, and described the second spool and described the second valve pocket form normally closed valve, and described the 3rd spool and described the 3rd valve pocket form normally open valve.
Help like this to improve the safety of vehicle, prevent the generation of contingency.
On the other hand, the utility model also provides a kind of brake system, comprises pressure medium source, foot brake valves, hand brake valve, at least one brake repair room, and described brake system also comprises above-mentioned valve arrangement, and described pressure medium source is connected with described import; Described foot brake valves is connected with the first control mouth of described valve arrangement; Described hand brake valve is connected with the second control mouth of described valve arrangement; Described brake repair room comprises driving chamber and described Parking chamber, and described driving chamber is connected with described the first outlet, and described Parking chamber is connected with described the second outlet.
The brake system of the valve arrangement that employing the utility model provides, pipeline is less, and pipe joint also reduces thereupon, improved stability and the reliability of brake system, and but reduced the number of required valve support, the brake system integral structure is simple, convenient for assembly, production and maintenance efficiency are provided.
Preferably, the medium of described pressure medium source output is gas or liquid.
Pressure medium can be high pressure gas or low pressure liquid, and then brake system can be communicated with air receiver or hydraulic ram provides pressure medium for whole system.
On the one hand, the utility model also provides a kind of engineering truck, comprises aforesaid brake system again.
In sum, the valve arrangement that the utility model provides, comprised the repertoire of relay valve, differential valve, abs valve, simple in structure, installing space is little, reduced required support number has been installed, convenient for assembly, provide production and maintenance efficiency, the brake system of the valve arrangement that employing the utility model provides, can reduce the quantity of pipeline and management joint, improve stability and the reliability of brake system.
The valve arrangement that the utility model can also be provided is applied in the middle of other the mechanical equipment, can't be exhaustive at this, repeat no more, but its application all should be within protection domain of the present utility model.
Description of drawings
Fig. 1 is the structural plan of brake system in the correlation technique;
Fig. 2 is the structural representation according to valve arrangement one embodiment described in the utility model;
Fig. 3 is the structural representation of unifying embodiment according to brake system described in the utility model.
Among Fig. 1 among Reference numeral and the figure corresponding relation between the parts as follows:
1 ' air receiver, 2 ' differential valve, 3 ' relay valve, 4 ' abs valve
5 ' compressed air brake cylinder, 6 ' hand brake valve, 7 ' foot brake valves
Among Fig. 2 and Fig. 3 among Reference numeral and the figure corresponding relation of parts be:
1 valve body, 10 first valve pockets, 11 second valve pockets 12 the 3rd valve pocket
13 imports, 14 pressure relief openings, 15 second outlets, 16 first outlets
19 through-flow mouthfuls of 17 lock accesses 18 the 3rd outlets
2 first controls mouthful 21 second control mouthful 3 first spools
30 first pistons, 31 first springs, 4 second spools, 40 second piston groups
400 second pistons 401 the 3rd piston, 41 second springs
5 the 3rd spools, 50 magnet coils 51 the 3rd spring
6 pressure medium source, 7 foot brake valves, 8 hand brake valves
9 brake repair rooms, 90 driving chambers, 91 Parking chambers
The specific embodiment
In order more clearly to understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments the utility model is further described in detail.Need to prove, in the situation that do not conflict, the application's embodiment and the feature among the embodiment can make up mutually.
A lot of details have been set forth in the following description so that fully understand the utility model; but; the utility model can also adopt and be different from other modes described here and implement, and therefore, protection domain of the present utility model is not subjected to the restriction of following public specific embodiment.
As shown in Figures 2 and 3, the utility model provides a kind of valve arrangement, valve arrangement comprises valve body 1, the first spool 3, the second spool 4, the 3rd spool 5 and control module, be provided with the first valve pocket 10 on the described valve body 1, the second valve pocket 11 and the 3rd valve pocket 12, described the first spool 3 is installed in described the first valve pocket 10, the second spool 4 is installed in described the second valve pocket 11, the 3rd spool 5 is installed in the 3rd valve pocket 12, be provided with import 13 on the valve body 1, pressure relief opening 14, the first outlet 16, the second outlet 15, be communicated with by described through-flow mouth 19 between the 3rd outlet 18 and through-flow mouthfuls 19, described the first valve pocket 10 and described the 3rd valve pocket 12;
The first spool 3 can be controlled the break-make of the first valve pocket 10 and import 13 and the first valve pocket 10 and pressure relief opening 14; The second spool 4 can be controlled the break-make of second valve chamber 11 and import 13 and the second valve pocket 11 and pressure relief opening 14; The 3rd spool 5 can be controlled through-flow mouthful 19 and first break-make between the outlet, and controls the break-make between the first outlet the 16 and the 3rd outlet 18; Control module is controlled the first spool 3, the second spool 4 and 5 actions of the 3rd spool.
Control module is controlled the first spool and is laid respectively at different valve position with the 3rd spool, so that import is communicated with the first outlet or the first outlet is communicated with pressure relief opening, realizes running braking function and the switching of removing running braking function; Control module is controlled the second spool and is positioned at different valve position, so that import is communicated with the second outlet or the second outlet is communicated with pressure relief opening, realize parking braking function and the switching of removing parking braking function, control module is controlled the 3rd spool and is positioned at different valve position, prevents that also the stack of service brake power and braking during standstill power from damaging brake component.
As shown in Figure 2, in the present embodiment in a kind of specific embodiment, control module comprises the first control mouthful the 2, second control mouthful the 21 and the 3rd control unit, pressure medium is passed to the end of the first spool 3 and is promoted 3 actions of the first spool by described the first control mouth 2, with the break-make between control import 13 and the first valve pocket 10; Pressure medium is passed to the end of described the second spool 4 and is promoted 4 actions of the second spool by described the second control mouth 21, with the break-make between control import 13 and the second valve pocket 11; The 3rd control unit moves by driving the 3rd spool 5, the break-make that exports between 16 to control through-flow mouth 19 and first, and control the break-make that the first outlet the 16 and the 3rd exports between 18.
Pressure medium enters into valve inner by the first control mouth and promotes the first spool, so that import is communicated with the first valve pocket; Pressure medium enters into valve inner by the second control mouth and promotes the second spool, so that import is communicated with the second valve pocket; By the 3rd control unit control the 3rd spool different control of valve positions through-flow mouthful with the first outlet between be communicated with or blocking-up, and control the break-make of the first outlet and the 3rd between exporting.
Further, in the present embodiment, described the 3rd control unit comprises magnet coil 50 and the 3rd spring 51, magnet coil 50 dead electricity, and the 3rd spring 51 promotes the 3rd spool 5 and resets, and through-flow mouth 19 and the first outlet 16 are communicated with, and the first outlet the 16 and the 3rd outlet 18 disconnects; Magnet coil 50 gets electric, attracts 5 motions of the 3rd spool, the first outlet 16 and through-flow mouthful 19 disconnection, and the first outlet 16 and the 3rd outlet 18 are communicated with.
By the power on/off to magnet coil, so that the 3rd spool is positioned at different valve position, after the magnet coil outage, compressed the 3rd spring promotes the 3rd spool, realize the 3rd valve core reset function, thereby control the break-make between through-flow mouth and the first outlet, and the break-make between the first outlet and the 3rd outlet.
One end of the first spool 3 is provided with first piston 30, and the other end is provided with the first spring 31; One end of the second spool 4 is provided with the second piston group 40, and the other end is provided with the second spring 41; Pressure medium passes to first piston 30 by the first control mouth 2 and promotes first piston 30 and 3 motions of the first spool, the first spool 3 compressions the first spring 31; After the pressure medium release at the first control mouthful 2 places, the first spring 31 promotes the first spool 3 and resets;
Pressure medium passes to the second piston group 40 by the second control mouth 21 and promotes the second piston group 40 and 4 motions of the second spool, and after the pressure medium release at the second spool 4 compressions the second spring 41, the second control mouthful 21 places, the second spring 41 promotions the second spool 4 resets.
Enter into from the first control mouth at pressure medium and to promote first piston in the valve body, first piston promotes the first valve core movement, and compress the first spring, after the first a control mouthful pressure medium that enters discharge, compressed the first spring promotes the first spool and resets, and the pressure medium that enters in the valve body from the first outlet promotes first piston, so that first piston and the first spool produce the gap, pressure medium enters into pressure relief opening from the gap, flows out valve body from pressure relief opening; Enter into promotion the second piston group in the valve body at pressure medium from the second control mouth, the second piston group promotes the second valve core movement, and compress the second spring, after the second a control mouthful pressure medium that enters discharge, compressed the second spring promotes the second spool and resets, and the pressure medium that enters in the valve body from the second outlet promotes the second piston, so that the second piston group and the second spool produce the gap, pressure medium enters into pressure relief opening from the gap, flows out valve body from pressure relief opening.
As shown in Figure 2, the second piston group 40 comprises the second piston 400 and the 3rd piston 401, forms the space 60 of wedge shape or taper between described the second piston 400 and described the 3rd piston 401.
When second controls mouth without the pressure medium effect, pressure medium can enter the gap between the second piston and the 3rd piston, pressure medium promotes the 3rd piston, the 3rd piston promotes the second spool, realize removing braking during standstill, prevent that service brake power and braking during standstill power from acting on the brake component simultaneously, causes the destruction of brake component.
Further, as shown in Figure 2, valve body 1 also is provided with interlocking passage 17, and a port of interlocking passage 17 is communicated with the first valve pocket 10, and the another port is communicated with the wedge shape of formation between the second piston 400 and the 3rd piston 401 or the space 60 of taper.
When second controls mouth without the pressure medium effect, the pressure medium that enters in the first valve pocket from import can enter in the second valve pocket through the interlocking passage, by promoting the 3rd piston and then promoting the second spool, realize removing braking during standstill, prevent that service brake power and braking during standstill power from acting on the brake component simultaneously, causes the destruction of brake component.
Preferably, described the first spool 3 forms normally closed valve with described the first valve pocket 10, and described the second spool 4 forms normally closed valve with described the second valve pocket 11, and described the 3rd spool 5 forms normally open valve with described the 3rd valve pocket 12.
Help like this to improve the safety of vehicle, prevent the generation of contingency.
On the other hand, the utility model also provides a kind of brake system, as shown in Figure 3, comprise the valve arrangement in pressure medium source 6, foot brake valves 7, hand brake valve 8, at least one brake repair room 9 and above-described embodiment, wherein pressure medium source 6 is connected with import 13, and foot brake valves 7 is connected with the first control mouth 2, hand brake valve 8 is connected with the second control mouth 21, brake repair room 9 comprises driving chamber 90 and Parking chamber 91, and driving chamber 90 is connected with the first outlet 16, and Parking chamber 91 is connected with the second outlet 15.
The brake system of the valve arrangement that employing the utility model provides, pipeline is less, and pipe joint also reduces thereupon, improved stability and the reliability of brake system, and but reduced the number of required valve support, the brake system integral structure is simple, convenient for assembly, production and maintenance efficiency are provided.
In the above-described embodiment, the medium of pressure medium source 6 outputs is gas or liquid.
In the present embodiment, pressure medium can be high pressure gas or low pressure liquid, and then brake system can be communicated with air receiver or hydraulic ram provides pressure medium for whole system.
Brake system in above-described embodiment is applied on the engineering truck, can obtains an embodiment of the utility model engineering truck.
Particularly, as shown in Figures 2 and 3, import 13 is connected with pressure medium source 6, pressure medium source 6 adopts air reservoir device, foot brake valves 7 and the first control mouthful 2 connections, hand brake valve 8 and the second control mouthful 21 connections, driving chamber 90 and the first outlet 16 are connected, Parking chamber 91 and the second outlet 15 connections.
By control pin brake activation valve 7, the first control mouthfuls 2 logical high-pressure air source, source of the gas promote first piston 1 motion of turning right, and promote simultaneously the motion of turning right of the first spool 3, import 13 this moment and the first outlet 16 are connected, and carry out source of the gas and realize service brake from the driving chamber 90 that air receiver enters compressed air brake cylinder 9; By the control pin brake activation valve, the first control mouthful 2 interior high-pressure air source are discharged, and the first spring 31 promotes the first spool 3 and resets, and outlet 16 this moment first and pressure relief opening 14 are connected, and carry out source of the gas and discharge from the driving chamber 90 of compressed air brake cylinder 9, realize the releasing service brake.
High-pressure air source by control hand brake valve 8, the second control mouths 21 is discharged, and the second spring 41 pushing parts the second spool 4 resets, and the second outlet 15 is connected with pressure relief opening 14, and the execution source of the gas is discharged from the Parking chamber 91 of compressed air brake cylinder 9, realizes braking during standstill.By control hand brake valve 8, the second control mouthful 21 logical high-pressure air source, source of the gas promotes the 3rd piston 401 toward left movement, promote simultaneously the second piston 400 and the second spool 4 toward left movement, import 13 this moment and the second outlet 15 are connected, and carry out source of the gas and realize removing braking during standstill from the Parking chamber 91 that air receiver enters compressed air brake cylinder 9.
And in the braking during standstill situation, in order to prevent that control pin brake activation valve 7 causes the stack of service brake power and braking during standstill power and makes the bridge brake failsafety simultaneously, by the interlocking passage 17 with first the outlet 16 with the second piston 400 and the 3rd piston 401 between the space be communicated with, behind the control pin brake activation valve, the high-pressure air source of the first outlet 16 enters space between the second piston 400 and the 3rd piston 401, source of the gas promotes the second piston 400 toward left movement, promote simultaneously the second spool 4 toward left movement, import 13 this moment and the second outlet 15 are connected, and carry out source of the gas and realize removing braking during standstill from the Parking chamber 91 that air receiver enters compressed air brake cylinder 9.Simultaneously, after the ABS system provided the anti-lock signal, the power on/off of control setup control magnet coil 50 made about 5 actions of the 3rd spool come the break-make of import 13 and the first outlet 16 gas circuits is controlled the brake off locking phenomenon.
In sum, the valve arrangement that the utility model provides, comprised the repertoire of relay valve, differential valve, abs valve, simple in structure, installing space is little, reduced required support number has been installed, convenient for assembly, provide production and maintenance efficiency, the brake system of the valve arrangement that employing the utility model provides, can reduce the quantity of pipeline and management joint, improve stability and the reliability of brake system.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. valve arrangement, it is characterized in that, comprise valve body (1), the first spool (3), the second spool (4), the 3rd spool (5) and control module, be provided with the first valve pocket (10), the second valve pocket (11) and the 3rd valve pocket (12) on the described valve body (1)
Described the first spool (3) is installed in described the first valve pocket (10); Described the second spool (4) is installed in described the second valve pocket (11); Described the 3rd spool (5) is installed in described the 3rd valve pocket (12);
Be provided with import (13), pressure relief opening (14), the first outlet (16), the second outlet (15), the 3rd outlet (18) and through-flow mouthful (19) on the described valve body (1), be communicated with by described through-flow mouth (19) between described the first valve pocket (10) and described the 3rd valve pocket (12);
Described the first spool (3) can be controlled the break-make of described the first valve pocket (10) and described import (13) and described the first valve pocket (10) and described pressure relief opening (14); Described the second spool (4) can be controlled the break-make of described the second valve pocket (11) and described import (13) and described the second valve pocket (11) and described pressure relief opening (14); Described the 3rd spool (5) can be controlled described through-flow mouthful (19) and export the break-make of (16) with described first, and controls the break-make between described the first outlet (16) and described the 3rd outlet (18);
Described control module is controlled described the first spool (3), the second spool (4) and described the 3rd spool (5) action.
2. valve arrangement according to claim 1 is characterized in that, described control module comprises the first control mouthful (2), the second control mouthful (21) and the 3rd control unit,
Pressure medium is passed to the end of described the first spool (3) and is promoted described the first spool (3) action by described the first control mouthful (2), to control the break-make between described import (13) and described the first valve pocket (10);
Pressure medium is passed to the end of described the second spool (4) and is promoted described the second spool (4) action by described the second control mouthful (21), to control the break-make between described import (13) and described the second valve pocket (11);
Described the 3rd control unit is by driving described the 3rd spool (5) action, controlling the break-make between described through-flow mouthful (19) and described the first outlet (16), and controls described the first outlet (16) and the described the 3rd break-make that exports between (18).
3. valve arrangement according to claim 2 is characterized in that, described the 3rd control unit comprises magnet coil (50) and the 3rd spring (51),
Described magnet coil (50) dead electricity, described the 3rd spring (51) promote described the 3rd spool (5) and reset, and described through-flow mouthful (19) are communicated with described the first outlet (16), and described the first outlet (16) disconnects with described the 3rd outlet (18);
Described magnet coil (50) gets electric, attracts described the 3rd spool (5) motion, and described the first outlet (16) is communicated with described through-flow mouthful of (19) disconnection, described the first outlet (16) and described the 3rd outlet (18).
4. valve arrangement according to claim 3 is characterized in that, an end of described the first spool (3) is provided with first piston (30), and the other end is provided with the first spring (31); One end of described the second spool (4) is provided with the second piston group (40), and the other end is provided with the second spring (41);
Pressure medium is passed to described first piston (30) and is promoted described first piston (30) and the first spool (3) motion by described the first control mouthful (2), described the first spool (3) compression described the first spring (31); After the pressure medium release that described the first control mouthful (2) is located, described the first spring (31) promotes described the first spool (3) and resets;
Pressure medium is passed to described the second piston group (40) and is promoted described the second piston group (40) and described the second spool (4) motion by described the second control mouthful (21), described the second spool (4) compression described the second spring (41); After the pressure medium release that described the second control mouthful (21) is located, described the second spring (41) promotes described the second spool (4) and resets.
5. valve arrangement according to claim 4, it is characterized in that, described the second piston group (40) comprises the second piston (400) and the 3rd piston (401), forms the space (60) of wedge shape or taper between described the second piston (400) and described the 3rd piston (401).
6. valve arrangement according to claim 5, it is characterized in that, described valve body (1) also is provided with interlocking passage (17), a port of described interlocking passage (17) is communicated with described the first valve pocket (10), and the another port is communicated with described wedge shape between described the second piston (400) and described the 3rd piston (401) or the space (60) of taper.
7. each described valve arrangement in 6 according to claim 1, it is characterized in that, described the first spool (3) forms normally closed valve with described the first valve pocket (10), described the second spool (4) forms normally closed valve with described the second valve pocket (11), and described the 3rd spool (5) forms normally open valve with described the 3rd valve pocket (12).
8. a brake system comprises pressure medium source (6), foot brake valves (7), hand brake valve (8), at least one brake repair room (9), it is characterized in that, also comprise such as each described valve arrangement in the claim 1 to 7, wherein,
Described pressure medium source (6) is connected with described import (13);
Described foot brake valves (7) is connected with the first control mouthful (2) of described valve arrangement;
Described hand brake valve (8) is connected with the second control mouthful (21) of described valve arrangement;
Described brake repair room (9) comprises driving chamber (90) and described Parking chamber (91), and described driving chamber (90) is connected with described the first outlet (16), and described Parking chamber (91) is connected with described the second outlet (15).
9. brake system according to claim 8 is characterized in that, the medium of described pressure medium source (6) output is gas or liquid.
10. an engineering truck is characterized in that, comprises as claimed in claim 8 or 9 brake system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220464135.XU CN202827550U (en) | 2012-09-12 | 2012-09-12 | Valve structure and braking system and engineering vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220464135.XU CN202827550U (en) | 2012-09-12 | 2012-09-12 | Valve structure and braking system and engineering vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN202827550U true CN202827550U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220464135.XU Expired - Lifetime CN202827550U (en) | 2012-09-12 | 2012-09-12 | Valve structure and braking system and engineering vehicle |
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| CN (1) | CN202827550U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523001A (en) * | 2013-10-16 | 2014-01-22 | 徐州重型机械有限公司 | Engineering vehicle chassis brake control system and crane |
| CN114714106A (en) * | 2022-04-11 | 2022-07-08 | 中车青岛四方机车车辆股份有限公司 | Differential pressure valve copper pipe support positioning tool and rail vehicle framework pipeline assembling method |
-
2012
- 2012-09-12 CN CN201220464135.XU patent/CN202827550U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523001A (en) * | 2013-10-16 | 2014-01-22 | 徐州重型机械有限公司 | Engineering vehicle chassis brake control system and crane |
| CN114714106A (en) * | 2022-04-11 | 2022-07-08 | 中车青岛四方机车车辆股份有限公司 | Differential pressure valve copper pipe support positioning tool and rail vehicle framework pipeline assembling method |
| CN114714106B (en) * | 2022-04-11 | 2023-04-21 | 中车青岛四方机车车辆股份有限公司 | Differential pressure valve copper pipe bracket positioning tool and rail vehicle framework pipeline assembling method |
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