CN108397437A - A kind of solenoid valve and cylinder control assembly - Google Patents
A kind of solenoid valve and cylinder control assembly Download PDFInfo
- Publication number
- CN108397437A CN108397437A CN201810443678.5A CN201810443678A CN108397437A CN 108397437 A CN108397437 A CN 108397437A CN 201810443678 A CN201810443678 A CN 201810443678A CN 108397437 A CN108397437 A CN 108397437A
- Authority
- CN
- China
- Prior art keywords
- hole
- spool
- air flue
- stomata
- solenoid valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
Abstract
A kind of solenoid valve of present invention offer and cylinder control assembly, which includes：Shell, spool, return spring, electromagnet core and electromagnetic coil.Electromagnetic coil is wound on electromagnet core, electromagnet core is fixed on the first end of the enclosure interior, and when electromagnetic coil is powered, electromagnet core absorption spool is moved toward one another to attracted position.The second end in the enclosure interior is arranged in spool, and spool includes：Conducting portion, limiting section and support portion, one end of the conducting portion are connected with the limiting section, and the other end of the conducting portion is connected with the support portion；The conducting portion is connected or blocks air flue through-hole when spool is in different location for multiple air flue through-holes to be arranged.The return spring is arranged on the limiting section, and when spool and the electromagnet core move toward one another, return spring forced compression, when electromagnetic coil powers off, return spring pushes the spool to be returned to initial position.The present invention can improve the working efficiency of cylinder.
Description
Technical field
The present invention relates to valve body technical fields more particularly to a kind of solenoid valve and cylinder to control assembly.
Background technology
Gas circuit is largely used to realize the function of executive component on truck, such as seat shock-absorption air bag, driver's cabin shock-absorption air bag, gas
Cylinder etc., the logic control of gas circuit are generally realized by solenoid valve.It can only be driven when existing solenoid valve control gas circuit is to cylinder charge
Cylinder piston one-way movement, and the counter motion of cylinder piston often leans on external force (such as cylinder load) to realize.When energization, electromagnetism
Valve air inlet is connected to gas outlet, exhaust outlet is closed, and system is to cylinder charge, cylinder elongation workmanship.When power-off, solenoid valve outlet
Mouth is connected to exhaust outlet, air inlet is closed, and under load effect, cylinder is compressed, and air cavity gas is excluded.Existing structure is in gas
When the cylinder backhaul stage (cylinder shortening), load very little or without load in the case of, only lean on air cavity and air draught head
Exhaust, it is time-consuming too long, and cylinder is difficult to timely automated contraction return.Meanwhile the structure patent of the solenoid valve on existing market is big
Part is all possessed by offshore company, and product price is not cheap, and when solenoid valve core damages, there are the supply time for repair replacement
The problem of length, price.
Invention content
A kind of solenoid valve of present invention offer and cylinder control assembly, when solving existing solenoid valve control cylinder exhaust, if
External load hour, the problem of cylinder exhaust time length can improve the working efficiency of cylinder, reduce the maintenance cost of solenoid valve.
In order to achieve the above object, the present invention provides following technical scheme；
A kind of solenoid valve, including：Shell, spool, return spring, electromagnet core and electromagnetic coil；
The electromagnetic coil is wound on the electromagnet core, the electromagnet core is fixed on the first end of the enclosure interior
Portion, when the electromagnetic coil is powered, the electromagnet core adsorbs the spool and moves toward one another to attracted position；
The second end in the enclosure interior is arranged in the spool, and the spool includes：Conducting portion, limiting section and support
Portion, one end of the conducting portion are connected with the limiting section, and the other end of the conducting portion is connected with the support portion, described to lead
Logical portion is connected or blocks air flue through-hole when the spool is in different location for multiple air flue through-holes to be arranged；
The return spring is arranged on the limiting section, described when the spool and the electromagnet core move toward one another
Return spring forced compression, when the electromagnetic coil powers off, the return spring pushes the spool to be returned to initial position.
Preferably, circular trough is equipped in the shell, the circular trough is equipped with annular stop plate, the annular stop plate
The circular trough is divided into the first mounting groove and the second mounting groove；
The medial surface of first mounting groove is equipped with feather key, and the spool is mounted in first mounting groove, in institute
When stating the electromagnet core absorption spool, the spool slides axially along the feather key；
The electromagnet core is arranged in second mounting groove, and the electromagnet core is logical by the center of the annular stop plate
It adsorbs the spool and moves toward one another in hole.
Preferably, the shell is equipped with the first stomata, the second stomata, third stomata and the 4th stomata；
First stomata is arranged in the side of the shell, is connected with first mounting groove；
Second stomata, the third stomata and the 4th stomata are arranged in the other side of the shell, respectively with
The first mounting groove conducting.
Preferably, the shell is seperated symmetrical structure, and the shell is equipped with mounting hole, and is assembled by the mounting hole
It is fixed.
Preferably, the conducting portion be it is cylindric, the conducting portion be provided with the first air flue through-hole, the second air flue through-hole and
Third air flue through-hole；
The first air flue through-hole and the third air flue through-hole extend through the both sides of the conducting portion, second gas
The both ends of road through-hole are each provided at the side of the conducting portion, and the first air flue through-hole and the third air flue through-hole are located at described
The both sides of second air flue through-hole；
Powered off in the electromagnetic coil, and when the spool be in initial position, one end of the first air flue through-hole and
First stomata is connected, and the other end of the first air flue through-hole is connected with second stomata；Second air flue
One end of through-hole is connected with the third stomata, and the other end of the second air flue through-hole is connected with the 4th stomata；
Be powered in the electromagnetic coil, and when the spool be in attracted position, one end of the third air flue through-hole and
First stomata is connected, and the other end of the third air flue through-hole is connected with the third stomata；Second air flue
One end of through-hole is connected with second stomata, and the other end of the second air flue through-hole is connected with the third stomata.
Preferably, the side of the conducting portion is equipped with guide groove, and the spool passes through the guide groove and the feather key
Carry out guiding sliding.
Preferably, the limiting section includes：Cylindrical handle and first boss；
One end of one end of the cylindrical handle and the conducting portion axially connect, the other end of the cylindrical handle and described the
The axially vertical setting of one boss, the cylindrical handle run through the annular stop plate, the return spring are arranged on the cylindrical handle,
When the return spring pushes the spool to be returned to initial position, the first boss is by the annular stop plate to institute
It states spool to be limited, the spool is made to be in initial position.
Preferably, the support portion is cylindrical boss, and the support portion is axially connect with the other end of the conducting portion,
When the return spring pushes the spool to be returned to initial position, the spool passes through the support portion and the shell
Circular trough end contacts, to limit the initial position of the spool.
The present invention also provides a kind of cylinders to control assembly, including cylinder, gas supply or exhaust of the cylinder by compressed air
To push the stretching motion of piston；Further include above-described solenoid valve, the solenoid valve is used to control the gas supply of the cylinder
And exhaust.
Preferably, the air cavity of the cylinder is equipped with air admission hole, and the plunger shaft of the cylinder is equipped with gas vent；
The air admission hole is connected by tracheae with the second stomata of the solenoid valve, and the gas vent passes through tracheae and institute
The 4th stomata for stating solenoid valve is connected；
When the solenoid valve powers off, compressed air, to the air cavity air inlet, is being compressed by the first air flue through-hole
When air push piston flexes outward, the plunger shaft is outwardly vented by the second air flue through-hole；
In the solenoid valves, the solenoid valve is attracted, and the air cavity is connected with the second air flue through-hole, with
The external world is vented, the plunger shaft is connected with the third air flue through-hole, and compressed air passes through the third air flue through-hole pair
The plunger shaft inflation, to push piston to compress inwards.
A kind of solenoid valve of present invention offer and cylinder control assembly, which, which passes through, is arranged return spring, controls spool
On air flue through-hole and external conducting or block, when solving existing solenoid valve control cylinder exhaust, if external load hour,
The problem of cylinder exhaust time length, can improve the working efficiency of cylinder, reduce the maintenance cost of solenoid valve.
Description of the drawings
In order to illustrate more clearly of specific embodiments of the present invention, attached drawing needed in the embodiment will be made below
Simply introduce.
Fig. 1：It is a kind of structural schematic diagram of solenoid valve provided by the invention；
Fig. 2：It is the sectional view of shell provided by the invention；
Fig. 3：It is the sectional view of spool provided by the invention；
Fig. 4：It is the appearance schematic diagram of spool provided by the invention；
Fig. 5：It is the air intake structure schematic diagram of cylinder control assembly provided by the invention；
Fig. 6：It is the exhaust structure schematic diagram of cylinder control assembly provided by the invention.
Reference numeral
1 shell
2 spools
3 electromagnet cores
4 electromagnetic coils
5 return springs
6 connecting terminals
11 first stomatas
12 second stomatas
13 third stomatas
14 the 4th stomatas
15 feather keys
16 annular stop plates
17 harness holes
18 mounting holes
21 first air flue through-holes
22 second air flue through-holes
23 third air flue through-holes
24 guide grooves
25 support portions
26 limiting sections
27 mounting holes
7 cylinders
71 air cavitys
72 plunger shafts
73 pistons
Specific implementation mode
In order to make those skilled in the art more fully understand the scheme of the embodiment of the present invention, below in conjunction with the accompanying drawings and implement
Mode is described in further detail the embodiment of the present invention.
When controlling cylinder exhaust for current vehicle electromagnetic valve, if external load hour, cylinder exhaust is asked into long
Topic.A kind of solenoid valve of present invention offer and cylinder control assembly, which controls the gas on spool by the way that return spring is arranged
Road through-hole and external conducting are blocked, when solving existing solenoid valve control cylinder exhaust, if external load hour, inblock cylinder
The problem of gas time length, can improve the working efficiency of cylinder, reduce the maintenance cost of solenoid valve.
As shown in Figure 1, being a kind of electromagnetic valve structure schematic diagram provided by the invention, which includes：Shell 1, spool
2, return spring 5, electromagnet core 3 and electromagnetic coil 4.The electromagnetic coil 4 is wound on the electromagnet core 3, the electromagnet core 3 is solid
The first end being scheduled on inside the shell 1, when the electromagnetic coil 4 is powered, the electromagnet core 3 adsorbs 2 phase of the spool
To moving to attracted position.The second end inside the shell 1 is arranged in the spool 2, and the spool 2 includes：Conducting portion,
Limiting section and support portion, one end of the conducting portion are connected with the limiting section, the other end of the conducting portion and the support
Portion is connected, and the conducting portion is connected or blocks air flue when the spool is in different location for multiple air flue through-holes to be arranged
Through-hole.The return spring 5 is arranged on the limiting section, described when the spool 2 and the electromagnet core 3 move toward one another
5 forced compression of return spring, when the electromagnetic coil 4 powers off, the return spring 5 pushes the spool 2 to be returned to initially
Position.
In practical applications, as shown in Fig. 2, shell 1 is additionally provided with harness hole 17, make electromagnetic coil 4 by harness hole 17 with
External connecting terminal 6 is connected.
As shown in Fig. 2, being equipped with circular trough in the shell 1, the circular trough is equipped with annular stop plate 16, the annular
The circular trough is divided into the first mounting groove and the second mounting groove by limiting plate 16.The medial surface of first mounting groove is equipped with and leads
To key 15, the spool 2 is mounted in first mounting groove, when the electromagnet core 3 adsorbs the spool 2, the spool 2
It slides axially along the feather key 15.The electromagnet core 3 is arranged in second mounting groove, and the electromagnet core 3 passes through institute
The central through hole for stating annular stop plate 16 adsorbs the spool 2 and moves toward one another.
Further, the shell is equipped with the first stomata 11, the second stomata 12, third stomata 13 and the 4th stomata 14.It is described
First stomata 11 is arranged in the side of the shell 1, is connected with first mounting groove.Second stomata 12, the third
Stomata 13 and the 4th stomata 14 are arranged in the other side of the shell 1, are connected respectively with first mounting groove.
Further, the shell is seperated symmetrical structure, and the shell is equipped with mounting hole 18, and passes through the mounting hole
18 assemblings are fixed.
As shown in Figures 3 and 4, the conducting portion is cylindric, and the conducting portion is provided with the first air flue through-hole 21, the second gas
Road through-hole 22 and third air flue through-hole 23.The first air flue through-hole 21 and the third air flue through-hole 23 extend through described lead
The both sides in logical portion, the both ends of the second air flue through-hole 22 are each provided at the side of the conducting portion, the first air flue through-hole 21
It is located at the both sides of the second air flue through-hole 22 with the third air flue through-hole 23.It is powered off in the electromagnetic coil 4, and described
When spool 2 is in initial position, one end of the first air flue through-hole 21 is connected with first stomata 11, first gas
The other end of road through-hole 21 is connected with second stomata 12；One end of the second air flue through-hole 22 and the third stomata
13 are connected, and the other end of the second air flue through-hole 22 is connected with the 4th stomata 14.It is logical in the electromagnetic coil 4
Electricity, and when the spool 2 is in attracted position, one end of the third air flue through-hole 23 is connected with first stomata 11,
The other end of the third air flue through-hole 23 is connected with the third stomata 13；One end of the second air flue through-hole 22 and institute
It states the second stomata 12 to be connected, the other end of the second air flue through-hole 22 is connected with the third stomata 13.
In practical applications, the spool can be seperated symmetrical structure, and the spool is equipped with mounting hole 27, and passes through fixation
The assembling of hole 27 is fixed.
As shown in figure 4, the side of the conducting portion be equipped with guide groove 24, the spool by the guide groove 24 with it is described
Feather key 15 carries out guiding sliding.
As shown in figs. 1 and 4, the limiting section 26 includes：Cylindrical handle and first boss.One end of the cylindrical handle with it is described
One end of conducting portion axially connects, the other end of the cylindrical handle and the axially vertical setting of the first boss, the cylindrical handle
Through the annular stop plate 16, it is arranged the return spring 5 on the cylindrical handle, the valve is pushed in the return spring 5
When core 2 is returned to initial position, the first boss limits the spool 2 by the annular stop plate 16, makes institute
It states spool 2 and is in initial position.
As shown in figure 4, the support portion 25 is cylindrical boss, the other end axis of the support portion 25 and the conducting portion
To connection, when the return spring 5 pushes the spool 2 to be returned to initial position, the spool 2 passes through the support portion 25
It is contacted with the circular trough end of the shell 1, to limit the initial position of the spool 2.
As it can be seen that the present invention provides a kind of solenoid valve, by the way that return spring is arranged, the air flue through-hole on spool and outside are controlled
Conducting or block, when solving existing solenoid valve control cylinder exhaust, if external load hour, the cylinder exhaust time length ask
Topic, can improve the working efficiency of cylinder, reduce the maintenance cost of solenoid valve.
As it can be seen in figures 5 and 6, the present invention also provides a kind of cylinders to control assembly, including cylinder, the cylinder is by compressed air
Gas supply or exhaust push the stretching motion of piston；Further include above-described solenoid valve, the solenoid valve is for controlling institute
State gas supply and the exhaust of cylinder.Gas supply using above-mentioned solenoid valve control cylinder and exhaust.
Further, the air cavity 71 of the cylinder is equipped with air admission hole, and the plunger shaft 72 of the cylinder is equipped with gas vent.It is described into
Stomata is connected by tracheae with the second stomata 12 of the solenoid valve, the gas vent pass through tracheae and the solenoid valve the
Four stomatas 14 are connected.
As shown in figure 5, powered off in the solenoid valve, and when the spool be in initial position, described in compressed air passes through
First air flue through-hole 21 is to 71 air inlet of the air cavity, and when compressed air pushes piston 73 to flex outward, the plunger shaft 72 is logical
The second air flue through-hole 22 is crossed outwardly to be vented；
As shown in fig. 6, in the solenoid valves, and when the spool is in attracted position, the solenoid valve is attracted, institute
It states air cavity 71 with the second air flue through-hole 12 to be connected, to be vented the external world, the plunger shaft 72 is logical with the third air flue
Hole 23 is connected, and compressed air inflates the plunger shaft 72 by the third air flue through-hole 23, to push piston 73 inwards
Compression.
As it can be seen that the present invention, which provides a kind of cylinder, controls assembly, by by the second gas of the air cavity of cylinder and above-mentioned solenoid valve
Hole is connected, and also the plunger shaft of cylinder is connected with the 4th stomata of above-mentioned solenoid valve, and by the power on/off to electromagnetism And,
The air cavity of cylinder or the air inlet of plunger shaft are controlled, when solving existing solenoid valve control cylinder exhaust, if external load hour, gas
The problem of cylinder evacuation time length, can improve the working efficiency of cylinder, reduce the maintenance cost of solenoid valve.
The structure, feature and effect of the present invention, the above institute is described in detail according to diagrammatically shown embodiment above
Only presently preferred embodiments of the present invention is stated, but the present invention is not to limit practical range, every structure according to the present invention shown in drawing
Change made by thinking, or is revised as the equivalent embodiment of equivalent variations, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (10)
1. a kind of solenoid valve, which is characterized in that including：Shell, spool, return spring, electromagnet core and electromagnetic coil；
The electromagnetic coil is wound on the electromagnet core, the electromagnet core is fixed on the first end of the enclosure interior,
When the electromagnetic coil is powered, the electromagnet core adsorbs the spool and moves toward one another to attracted position；
The second end in the enclosure interior is arranged in the spool, and the spool includes：Conducting portion, limiting section and support portion,
One end of the conducting portion is connected with the limiting section, and the other end of the conducting portion is connected with the support portion；The conducting
Portion is connected or blocks air flue through-hole when the spool is in different location for multiple air flue through-holes to be arranged；
The return spring is arranged on the limiting section, when the spool and the electromagnet core move toward one another, the return
Spring stress compresses, and when the electromagnetic coil powers off, the return spring pushes the spool to be returned to initial position.
2. solenoid valve according to claim 1, which is characterized in that circular trough is equipped in the shell, on the circular trough
Equipped with annular stop plate, the circular trough is divided into the first mounting groove and the second mounting groove by the annular stop plate；
The medial surface of first mounting groove is equipped with feather key, and the spool is mounted in first mounting groove, in the electricity
When magnetic core adsorbs the spool, the spool slides axially along the feather key；
The electromagnet core is arranged in second mounting groove, and the electromagnet core is inhaled by the central through hole of the annular stop plate
The attached spool moves toward one another.
3. solenoid valve according to claim 2, which is characterized in that the shell is equipped with the first stomata, the second stomata, third
Stomata and the 4th stomata；
First stomata is arranged in the side of the shell, is connected with first mounting groove；
Second stomata, the third stomata and the 4th stomata are arranged in the other side of the shell, respectively with it is described
First mounting groove is connected.
4. solenoid valve according to claim 3, which is characterized in that the shell is seperated symmetrical structure, and the shell is set
There is mounting hole, and is assembled and fixed by the mounting hole.
5. solenoid valve according to claim 4, which is characterized in that the conducting portion is cylindric, the conducting portion setting
There are the first air flue through-hole, the second air flue through-hole and third air flue through-hole；
The first air flue through-hole and the third air flue through-hole extend through the both sides of the conducting portion, and second air flue is logical
The both ends in hole are each provided at the side of the conducting portion, and the first air flue through-hole and the third air flue through-hole are located at described second
The both sides of air flue through-hole；
Powered off in the electromagnetic coil, and when the spool is in initial position, one end of the first air flue through-hole with it is described
First stomata is connected, and the other end of the first air flue through-hole is connected with second stomata；The second air flue through-hole
One end be connected with the third stomata, the other end of the second air flue through-hole is connected with the 4th stomata；
Be powered in the electromagnetic coil, and when the spool is in attracted position, one end of the third air flue through-hole with it is described
First stomata is connected, and the other end of the third air flue through-hole is connected with the third stomata；The second air flue through-hole
One end be connected with second stomata, the other end of the second air flue through-hole is connected with the third stomata.
6. solenoid valve according to claim 5, which is characterized in that the side of the conducting portion is equipped with guide groove, the valve
Core carries out guiding sliding by the guide groove and the feather key.
7. solenoid valve according to claim 6, which is characterized in that the limiting section includes：Cylindrical handle and first boss；
One end of one end of the cylindrical handle and the conducting portion is axially connect, the other end of the cylindrical handle and described first convex
The axially vertical setting of platform, the cylindrical handle run through the annular stop plate, the return spring are arranged on the cylindrical handle, in institute
When stating return spring the spool being pushed to be returned to initial position, the first boss is by the annular stop plate to the valve
Core is limited, and the spool is made to be in initial position.
8. solenoid valve according to claim 7, which is characterized in that the support portion is cylindrical boss, the support portion
It is axially connect with the other end of the conducting portion, it is described when the return spring pushes the spool to be returned to initial position
Spool is contacted by the support portion with the circular trough end of the shell, to limit the initial position of the spool.
9. a kind of cylinder controls assembly, including cylinder, the cylinder push stretching for piston by the gas supply or exhaust of compressed air
Contracting movement；It is characterized in that, further including any solenoid valve of claim 5 to 8, the solenoid valve is for controlling the gas
The gas supply of cylinder and exhaust.
10. cylinder according to claim 9 controls assembly, which is characterized in that the air cavity of the cylinder is equipped with air admission hole, institute
The plunger shaft for stating cylinder is equipped with gas vent；
The air admission hole is connected by tracheae with the second stomata of the solenoid valve, and the gas vent passes through tracheae and the electricity
4th stomata of magnet valve is connected；
When the solenoid valve powers off, compressed air by the first air flue through-hole to the air cavity air inlet, in compressed air
When piston being pushed to flex outward, the plunger shaft is outwardly vented by the second air flue through-hole；
In the solenoid valves, the solenoid valve is attracted, and the air cavity is connected with the second air flue through-hole, with external
Boundary is vented, and the plunger shaft is connected with the third air flue through-hole, and compressed air is by the third air flue through-hole to described
Plunger shaft is inflated, to push piston to compress inwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810443678.5A CN108397437B (en) | 2018-05-10 | 2018-05-10 | A kind of solenoid valve and cylinder control assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810443678.5A CN108397437B (en) | 2018-05-10 | 2018-05-10 | A kind of solenoid valve and cylinder control assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108397437A true CN108397437A (en) | 2018-08-14 |
| CN108397437B CN108397437B (en) | 2019-09-24 |
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ID=63101757
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810443678.5A Active CN108397437B (en) | 2018-05-10 | 2018-05-10 | A kind of solenoid valve and cylinder control assembly |
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| Country | Link |
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| CN (1) | CN108397437B (en) |
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| CN113357214A (en) * | 2021-06-10 | 2021-09-07 | 涌镇液压机械（上海）有限公司 | Hydraulic proportional reversing valve |
| CN115217297A (en) * | 2021-04-20 | 2022-10-21 | 广东博智林机器人有限公司 | Floor installation device and floor installation equipment |
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|---|---|---|---|---|
| CN115217297A (en) * | 2021-04-20 | 2022-10-21 | 广东博智林机器人有限公司 | Floor installation device and floor installation equipment |
| CN113357214A (en) * | 2021-06-10 | 2021-09-07 | 涌镇液压机械（上海）有限公司 | Hydraulic proportional reversing valve |
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| CN108397437B (en) | 2019-09-24 |
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