CN110296232A - A kind of list H gas circuit - Google Patents
A kind of list H gas circuit Download PDFInfo
- Publication number
- CN110296232A CN110296232A CN201910469660.7A CN201910469660A CN110296232A CN 110296232 A CN110296232 A CN 110296232A CN 201910469660 A CN201910469660 A CN 201910469660A CN 110296232 A CN110296232 A CN 110296232A
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- Prior art keywords
- valve
- air
- list
- gas circuit
- cavity
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
- F16H2061/308—Modular hydraulic shift units, i.e. preassembled actuator units for select and shift movements adapted for being mounted on transmission casing
Abstract
The present invention provides a kind of list H air valve, solve the problems, such as in existing heavy duty truck speed changer that part category is various in list H gas circuit, gas circuit arrangement is cumbersome and auxiliary box synchronizer easily occur to lose rank phenomenon.List H gas circuit includes air filter, air inlet pipe, pile-up valve, high-grade tracheae, low-grade tracheae and cylinder；Pile-up valve has the function of single H valve and gas path control valve simultaneously；Compressed air enters cylinder after air filter, air inlet pipe enter pile-up valve, then through high-grade tracheae or low-grade tracheae.The present invention is using pile-up valve substitution list H valve and gas path control valve, directly eliminate the transition tracheae between single H valve support and list H valve and gas path control valve, save installation part, so that gas circuit is clear, arrangement is more compact, integrated higher, simultaneously, due to shortening the channel distance of two air valves, it is thus also avoided that auxiliary box synchronizer is lost rank phenomenon.
Description
Technical field
The invention belongs to gearbox fields, and in particular to a kind of list H gas circuit.
Background technique
Heavy duty truck is all made of the twin countershaft transmission of major and minor box structure at present, and auxiliary transmission is by shift gas
Valve realizes the switching of high and low gear.And institute's distributing valve and gas circuit product on existing speed changer, there are design risks.
By taking existing 12 gear gearbox as an example, single H gas circuit is used, as shown in Figure 1, comprising 12 parts, air filter 1, height
Shelves tracheae 2, low-grade tracheae 3, list H valve 4, attachment screw 5, breather plug 6, list H valve support 7, transition tracheae 8, gas path control valve 9,
Three-way connection 10, air inlet pipe 11, cylinder 12；It can be seen that part category is more in gas circuit, have a single function, gas circuit arrangement is cumbersome,
Not compact, there are assembly and the higher problems of maintenance difficulties；Simultaneously as the transition tracheae between list H valve and gas path control valve
In there is air pressure and cylinder there is no self-locking function, easily there is auxiliary box synchronizer and lose rank phenomenon, so cause gearbox occur therefore
Barrier.
Summary of the invention
It is an object of the invention to solve in existing heavy duty truck speed changer, part category in list H gas circuit is various, gas circuit
It arranges cumbersome and auxiliary box synchronizer easily occurs and lose rank the shortcoming of phenomenon, and provide a kind of list H gas circuit.
To achieve the above object, technical solution provided by the present invention is:
A kind of list H gas circuit, is characterized in that, including air filter, air inlet pipe, pile-up valve, high-grade tracheae, low-grade tracheae
And cylinder；The pile-up valve has the function of single H valve and gas path control valve simultaneously；Compressed air through air filter, air inlet pipe into
After entering pile-up valve, then through high-grade tracheae or low-grade tracheae enter cylinder.
Further, the pile-up valve includes the first air valve and the second air valve；The valve of first air valve and the second air valve
The T-valve body that body is an integral structure；The perpendicular section cavity of the T-valve body is the first air valve cavity, and crosspiece cavity is the second gas
Valve chamber road；First air valve cavity is connected to the second air valve cavity；The first air inlet is provided on the side wall of the perpendicular section of the T-valve body
Mouthful；First air valve includes end cap, mandril, spool and the first compressed spring；The end cap is mounted on T-valve body and erects section
End, and connect with the manipulation shell of cooperation；For the top stem casing in end cap, one end stretches out end cap, the other end and spool
One end be connected, the bottom of the spool is provided with cavity；First compressed spring is mounted in the cavity；The mandril and
Spool can be axially moved under the drive of the first compressed spring along end cap；Second air valve includes front cover, rear cover, piston, valve
Bar and the second compressed spring；The front cover and rear cover are separately mounted to the both ends of T-valve body crosspiece, offer second on front cover
Air inlet；The piston is mounted in the chamber of front cover；The front end of valve rod and piston cooperate, and the end of valve rod is provided with spring
Seat；Second compressed spring is mounted between spring base and rear cover inner face；Being provided on second air valve keeps odd-side same
Walk device shift smoothly first row port and second exhaust port；It is provided on the side wall of the T-valve body crosspiece and is vented with two
The first gas outlet and the second gas outlet that mouth is connected.
Further, bushing and O-ring seal are provided between the mandril and end cap；The spool and T-valve body it
Between be provided with the first valve pocket, the both ends of first valve pocket are provided with O-ring seal and the positioning for fixing O-ring seal
Ring；One end of first compressed spring is connected with spool, and the other end is connected to the first air valve cavity bottom.
Further, Y-shaped ring is provided between the piston and front cover side wall；The valve rod is successively covered by front end to rear end
Equipped with plain washer, the second valve pocket, third valve pocket, the 4th valve pocket and the 5th valve pocket；The plain washer, the second valve pocket, third valve
O-ring seal is provided between set, the 4th valve pocket and the 5th valve pocket；The front of the valve rod is arranged with for fixing plain cushion
The snap ring of circle, the second valve pocket, third valve pocket, the 5th valve pocket of the 4th valve pocket and O-ring seal.
Further, the both ends of the valve rod are cavity, and middle part is provided with barrier, i.e. by middle part barrier between two cavitys
It separates；The outer end of two cavitys is provided with the first steel ball and the second steel ball for blocking cavity；The periphery of described two cavitys
It is uniformly provided with multiple ventholes.
Further, the first row port and second exhaust port are separately positioned on the opposite two sides of the second air valve, and
One exhaust outlet and second exhaust port are mounted on breather plug.
Further, the T-valve body crosspiece inner wall offers and the second valve pocket, third valve pocket, the 4th valve pocket and
The compatible annular groove of five valve pockets.
Further, the air inlet pipe is connected with the first air inlet of the pile-up valve；First gas outlet and top grade
The entrance of tracheae is connected；Second gas outlet is connected with the entrance of low-grade tracheae.
Further, in order to keep the connection between pile-up valve and external preselector valve even closer, the T-valve body erects section
Third air inlet is additionally provided on side wall.
Further, it is connected between the air inlet pipe and the first air inlet by three-way valve；The of the three-way valve
Three interfaces are connected with preselector valve, and the gas outlet of the preselector valve is connected with the second air inlet and third air inlet.
The invention has the advantages that
1. the present invention directly eliminates single H valve support and list H valve using pile-up valve substitution list H valve and gas path control valve
Transition tracheae between gas path control valve, saves installation part, so that gas circuit is clear, arrangement is more compact, integrated more
Height, simultaneously as shortening the channel distance of two air valves, it is thus also avoided that auxiliary box synchronizer is lost rank phenomenon, compared to existing
The single H gas circuit having, reduces production, assembly cost and after market claim, convenient for operator's assembly, maintenance.
2. single H valve and gas path control valve are integrated in one by pile-up valve in the present invention, the switching of odd-side can be completed, and can
Realize the protection in driving conditions to auxiliary box synchronizer.Pile-up valve is complete in the following manner to the defencive function of auxiliary box synchronizer
At: in driving conditions, main tank is state of putting into gear, at this point, manipulation internal mechanism compresses pile-up valve mandril, completes locking, realizes and protect
Protective function.Locking mode includes but is not limited to following two: the first is pile-up valve inner spool and sealing ring change in location, reality
The pneumatic locking of existing air inlet and outlet；Second is to form mechanical locking after pile-up valve inner spool moves.
3. pile-up valve gas circuit has preferable versatility in the present invention, which is suitable for S10, S12, Volvo12 grade, and
Domestic existing 12 grades of product
Detailed description of the invention
Fig. 1 is the schematic diagram of existing list H gas circuit；
Drawing reference numeral is as follows in Fig. 1:
1- air filter；2- top grade tracheae；3- low grade tracheae；The mono- H valve of 4-；5- attachment screw；6- breather plug；The mono- H valve branch of 7-
Seat；8- transition tracheae；9- gas path control valve；10- three-way connection；11- air inlet pipe；12- cylinder；
Fig. 2 is the schematic diagram of list H gas circuit of the invention；
Fig. 3 is the structural schematic diagram of pile-up valve in list H gas circuit of the invention；
Fig. 4 is the structural schematic diagram of the second air valve in pile-up valve；
Drawing reference numeral is as follows in Fig. 2-Fig. 4:
1- air filter；2- air inlet pipe；3- pile-up valve；4- low grade tracheae；5- top grade tracheae；6- cylinder；7- mandril；8- lining
Set；9- end cap；10-O type sealing ring；11- spool；12- positioning ring；13- screw；The first valve pocket of 14-；The first compressed spring of 15-；
16-T type valve body；17- front cover；18- piston；19-Y type circle；The first steel ball of 21-；22- valve rod；23- snap ring；24- plain washer；25-
Second valve pocket；26- third valve pocket；The 4th valve pocket of 27-；The 5th valve pocket of 28-；The second steel ball of 29-；30- spring base；31- second is pressed
Contracting spring；32- rear cover；The first air inlet of 34-；The second air inlet of 35-；The first gas outlet 36-；The second gas outlet 37-；38-
One exhaust outlet；39- second exhaust port.
Specific embodiment
The contents of the present invention are described in further detail below in conjunction with the drawings and specific embodiments:
As shown in Figures 2 to 4, list H gas circuit of the present invention include air filter 1, it is air inlet pipe 2, pile-up valve 3, high-grade tracheae 5, low
Shelves tracheae 4 and cylinder 6.The pile-up valve 3 has both the function of single H valve and gas path control valve；Compressed air is through air filter 1, air inlet
After the entrance pile-up valve 3 of pipe 2, then through high-grade tracheae 5 or the low-grade entrance of tracheae 4 cylinder 6.
Above-mentioned pile-up valve 3 includes the first air valve and the second air valve；The valve body of first air valve and the second air valve is integral type knot
The T-valve body 16 of structure；The perpendicular section cavity of the T-valve body 16 is the first air valve cavity, and crosspiece cavity is the second air valve cavity；First
Air valve cavity is connected with the second air valve cavity；Being provided on second air valve makes auxiliary box synchronizer shift smoothly first row port
38 and second exhaust port 39, first row port 38 and second exhaust port 39 two sides that be separately positioned on the second air valve opposite, and
One exhaust outlet 38 and second exhaust port 39 are mounted on breather plug；T-valve body 16, which erects, is provided with the first air inlet on the side wall of section
34；The first gas outlet 36 and the second gas outlet 37 being connected with two exhaust outlets are provided on the side wall of 16 crosspiece of T-valve body.
First air valve includes end cap 9, mandril 7, spool 11 and the first compressed spring 15；End cap 9 is mounted on T by screw
Type valve body 16 erects the end of section, and is connect with the manipulation shell of cooperation (that is, entire pile-up valve 3 is only by end cap 9 and manipulation shell
Connection, be fixed on operation shell on)；Mandril 7 is sleeved in end cap 9, and one end stretches out end cap 9, the other end and spool 11
One end is connected, and the bottom of the spool 11 is provided with cavity；First compressed spring 15 is mounted in cavity, and one end is embedded in spool
On 11, the other end is connected to the first air valve cavity bottom；Mandril 7 and spool 11 can be along ends under the drive of the first compressed spring 15
Lid 9 is axially moved；Bushing 8 and O-ring seal 10 are provided between mandril 7 and end cap 9；It is set between spool 11 and T-valve body 16
It is equipped with the first valve pocket 14, the both ends of first valve pocket 14 are provided with O-ring seal 10 and for fixing determining for O-ring seal 10
Position ring 12.
Second air valve includes front cover 17, rear cover 32, piston 18, valve rod 22 and the second compressed spring 31；Front cover 17 is with after
Lid 32 is separately mounted to the both ends of 16 crosspiece of T-valve body, and the second air inlet 35 is offered on front cover 17, which is
To control the external preselector valve of air inlet；Piston 18 is mounted in the chamber of front cover 17, is provided with Y type between 17 side wall of front cover
Circle 19；The front end of valve rod 22 and piston 18 cooperate, and the end of valve rod 22 is provided with spring base 30；Second compressed spring, 31 one end peace
With on spring base 30, the other end is mounted on 32 inner face of rear cover dress；The both ends of valve rod 22 are cavity, between two cavitys in
Portion's barrier separates；The outer end of two cavitys is provided with the first steel ball 21 and the second steel ball 29, for blocking cavity；Two cavitys
Periphery is uniformly provided with multiple ventholes；Valve rod 22 is successively arranged with plain washer 24, the second valve pocket 25, third by front end to rear end
Valve pocket 26, the 4th valve pocket 27 and the 5th valve pocket 28；The plain washer 24, the second valve pocket 25, third valve pocket 26, the 4th valve pocket 27
And the 5th be provided with O-ring seal 10 between valve pocket 28；The front of the valve rod 22 be arranged with for fix plain washer 24,
Second valve pocket 25, third valve pocket 26, the 5th valve pocket 28 of the 4th valve pocket 27 and O-ring seal 10 snap ring 23；T-valve body 16 is horizontal
Section inner wall offers annular groove compatible with the second valve pocket 25, third valve pocket 26, the 4th valve pocket 27 and the 5th valve pocket 28.
Arrange that single H gas circuit, air inlet pipe 2 are connected with the first air inlet 34 of pile-up valve 3 using above-mentioned pile-up valve 3；First goes out
Port 36 is connected with the entrance of low-grade tracheae 4；Second gas outlet 37 is connected with the entrance of high-grade tracheae 5.
The T-valve body 16, which erects, is additionally provided with third air inlet on the side wall of section；When arranging single H gas circuit, air inlet pipe 2 with
It is connected between first air inlet 34 by three-way valve；The third interface of the three-way valve is connected with preselector valve, preselector valve
Gas outlet then passes through pipeline and is directly connected with the second air inlet 35 and third air inlet.
Pile-up valve 3 of the invention during the work time, is passed through the variation of 7 stroke of mandril by the first air valve, gives the second air valve
It supplies or dies.First air valve is by the control of preselector valve on speed changer, so that the second air valve commutates, (the second air inlet 35 is died
When, valve rod 22 heads on the movement of piston 18 under the action of the second compressed spring 31；When second air inlet 35 is ventilated, piston 18 is then
Head on the movement of valve rod 22) so that auxiliary box synchronizer high and low shift is converted.In order to guarantee auxiliary box synchronizer conversion smoothly, the
It must be provided with two exhaust outlets on two air valves；According to after integrated structure and space, exhaust ports design the second air valve up and down
Two sides, the breather plug that sealing device is also equipped on exhaust outlet consider the size and installation space of breather plug according to assembly space.
The course of work is as follows:
Odd-side height turns low:
In gear, pile-up valve mandril is compressed main tank, is in mechanical locking or pneumatic locking shape inside pile-up valve at this time
State, and non-compressed air enters cylinder through high-grade tracheae, odd-side is not converted；When main tank hangs neutral gear, the stretching of pile-up valve mandril is
Free state, compressed air enter cylinder by low-grade tracheae, and odd-side completes conversion.
Low turn of height of odd-side:
In gear, pile-up valve mandril is compressed main tank, is in mechanical locking or pneumatic locking shape inside pile-up valve at this time
State, and non-compressed air enters cylinder through low-grade tracheae, odd-side is not converted；When main tank hangs neutral gear, the stretching of pile-up valve mandril is
Free state, compressed air enter cylinder by high-grade tracheae, and odd-side completes conversion.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art can readily occur in various equivalent modifications or replace in technical scope disclosed by the invention
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of list H gas circuit, it is characterised in that: including air filter (1), air inlet pipe (2), pile-up valve (3), high-grade tracheae (5), low
Shelves tracheae (4) and cylinder (6)；
The pile-up valve (3) has the function of single H valve and gas path control valve simultaneously；
Compressed air is after air filter (1), air inlet pipe (2) enter pile-up valve (3), then through high-grade tracheae (5) or low-grade tracheae
(4) enter cylinder (6).
2. list H gas circuit according to claim 1, it is characterised in that:
The pile-up valve (3) includes the first air valve and the second air valve；The valve body of first air valve and the second air valve is integral type
The T-valve body (16) of structure；The perpendicular section cavity of the T-valve body (16) is the first air valve cavity, and crosspiece cavity is the second air valve
Cavity；First air valve cavity is connected to the second air valve cavity；
The first air inlet (34) are provided on the side wall of the perpendicular section of the T-valve body (16)；
First air valve includes end cap (9), mandril (7), spool (11) and the first compressed spring (15)；The end cap (9)
It is mounted on T-valve body (16) and erects the end of section, and connect with the manipulation shell of cooperation；The mandril (7) is sleeved on end cap (9)
Interior, one end stretches out end cap (9), and the other end is connected with the one end of spool (11), and the bottom of the spool (11) is provided with cavity；Institute
The first compressed spring (15) is stated to be mounted in the cavity；The mandril (7) and spool (11) are in the first compressed spring (15)
It can be axially moved along end cap (9) under driving；
Second air valve includes front cover (17), rear cover (32), piston (18), valve rod (22) and the second compressed spring (31)；
The front cover (17) and rear cover (32) are separately mounted to the both ends of T-valve body (16) crosspiece, offered on front cover (17) second into
Port (35)；The piston (18) is mounted in the chamber of front cover (17)；The front end and piston (18) of valve rod (22) cooperate, valve rod
(22) end is provided with spring base (30)；Second compressed spring (31) is mounted on spring base (30) and rear cover (32) inner end
Between face；
Being provided on second air valve makes auxiliary box synchronizer shift smoothly first row port (34) and second exhaust port (35)；
The first gas outlet (36) being connected with two exhaust outlets and the second outlet are provided on the side wall of T-valve body (16) crosspiece
Mouth (39).
3. list H gas circuit according to claim 2, it is characterised in that:
Bushing (8) and O-ring seal (10) are provided between the mandril (7) and end cap (9)；The spool (11) and T-valve
It is provided between body (16) the first valve pocket (14), the both ends of first valve pocket (14) are provided with O-ring seal (10) and use
Positioning ring (12) in fixed O-ring seal (10)；
One end of first compressed spring (15) is connected with spool (11), and the other end is connected to the first air valve cavity bottom.
4. list H gas circuit according to claim 3, it is characterised in that: set between the piston (18) and front cover (17) side wall
It is equipped with Y-shaped ring (19)；
The valve rod (22) is successively arranged with plain washer (24), the second valve pocket (25), third valve pocket (26), by front end to rear end
Four valve pockets (27) and the 5th valve pocket (28)；The plain washer (24), the second valve pocket (25), third valve pocket (26), the 4th valve pocket
(27) and between the 5th valve pocket (28) O-ring seal (10) are provided with；The front of the valve rod (22) is arranged with for solid
Allocate washer (24), the second valve pocket (25), third valve pocket (26), the 5th valve pocket (28) of the 4th valve pocket (27) and O-ring seal
(10) snap ring.
5. list H gas circuit according to claim 4, it is characterised in that: the both ends of the valve rod (22) are cavity, middle part setting
There is barrier；The outer end of two cavitys is provided with the first steel ball (21) and the second steel ball (22) for blocking cavity；It is described two
The periphery of cavity is uniformly provided with multiple ventholes.
6. list H gas circuit according to claim 5, it is characterised in that: the first row port (34) and second exhaust port
(35) the opposite two sides of the second air valve are separately positioned on, and first row port (34) and second exhaust port (35) are mounted on ventilation
Plug.
7. list H gas circuit according to claim 6, it is characterised in that: T-valve body (16) the crosspiece inner wall offers and the
Two valve pockets (25), third valve pocket (26), the 4th valve pocket (27) and the compatible annular groove of the 5th valve pocket (28).
8. list H gas circuit according to claim 7, it is characterised in that: the of the air inlet pipe (2) and the pile-up valve (3)
One air inlet (34) is connected；First gas outlet (36) is connected with the entrance of high-grade tracheae (5)；Second gas outlet (39)
It is connected with the entrance of low-grade tracheae (4).
9. list H gas circuit according to claim 8, it is characterised in that: also set up on the side wall of the perpendicular section of the T-valve body (16)
There is third air inlet.
10. list H gas circuit according to claim 9, it is characterised in that: the air inlet pipe (2) and the first air inlet (34) it
Between pass through three-way valve connect；
The third interface of the three-way valve is connected with preselector valve, the gas outlet of the preselector valve and the second air inlet (35) and
Third air inlet is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910469660.7A CN110296232A (en) | 2019-05-31 | 2019-05-31 | A kind of list H gas circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910469660.7A CN110296232A (en) | 2019-05-31 | 2019-05-31 | A kind of list H gas circuit |
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| CN110296232A true CN110296232A (en) | 2019-10-01 |
Family
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| CN201910469660.7A Pending CN110296232A (en) | 2019-05-31 | 2019-05-31 | A kind of list H gas circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115182993A (en) * | 2022-06-27 | 2022-10-14 | 陕西法士特齿轮有限责任公司 | Double-pneumatic control integrated valve and gas circuit protection system adopting same |
| CN115182991A (en) * | 2022-06-20 | 2022-10-14 | 陕西法士特齿轮有限责任公司 | Two-position four-way reversing air valve |
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| CN102954206A (en) * | 2012-12-03 | 2013-03-06 | 浙江亿日气动科技有限公司 | Integrated pneumatic shifting operation system |
| CN104033626A (en) * | 2014-06-11 | 2014-09-10 | 陕西法士特齿轮有限责任公司 | Double-control integration valve |
| CN105370877A (en) * | 2015-12-09 | 2016-03-02 | 陕西法士特齿轮有限责任公司 | Mining vehicle transmission control system |
| CN109282074A (en) * | 2018-11-01 | 2019-01-29 | 西安法士特汽车传动有限公司 | A kind of pile-up valve of provided with electromagnetic valve, assembly and its working method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182991A (en) * | 2022-06-20 | 2022-10-14 | 陕西法士特齿轮有限责任公司 | Two-position four-way reversing air valve |
| CN115182993A (en) * | 2022-06-27 | 2022-10-14 | 陕西法士特齿轮有限责任公司 | Double-pneumatic control integrated valve and gas circuit protection system adopting same |
| CN115182993B (en) * | 2022-06-27 | 2023-11-07 | 陕西法士特齿轮有限责任公司 | Double-pneumatic-control integrated valve and protection gas circuit system adopting same |
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