CN204533493U - Clutch control valve and speed-changer operation device and machine - Google Patents
Clutch control valve and speed-changer operation device and machine Download PDFInfo
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- CN204533493U CN204533493U CN201520236101.9U CN201520236101U CN204533493U CN 204533493 U CN204533493 U CN 204533493U CN 201520236101 U CN201520236101 U CN 201520236101U CN 204533493 U CN204533493 U CN 204533493U
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- spool
- control valve
- clutch control
- gas
- interconnecting part
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Abstract
The utility model relates to clutch control valve and speed-changer operation device and machine.Clutch control valve (50) comprising: the valve body (1) being provided with fluid passage (13); Can in valve body (1) block respectively and fluid flowing not in obstruct fluid flow path (13) with the spool of the joint of solenoidoperated cluthes and movement between the primary importance of separation and the second place thus (2), valve body (1) and/or spool (2) are provided with prevention fluid from the first seal arrangement (23) leaked between spool and valve body; For compression gas channeling spool (2) to control the gas interconnecting part (3) of spool movement between the first and second positions; And the second seal arrangement (4) be arranged between spool (2) and gas interconnecting part (3), this second seal arrangement is configured to the pressurized gas of permission from gas interconnecting part (3) and exerts a force to spool (2) but stop pressurized gas to flow to the first seal arrangement (23).
Description
Technical field
The utility model relates to a kind of clutch control valve, relates more specifically to the clutch control valve be used in the speed-changer operation device of machine (especially Work machine).
Background technique
Machine (such as Work machine) is equipped with power system (as engine system) to provide power for machine, and the power that power system produces transmits the operation with control machine by transmission device.The Work machine of such as loader and so on adopts the hydromechanical transmission comprising fluid torque converter and power shift type speed changer to realize the Power output of machine usually.
Power shift type speed changer generally comprises multiple clutch, realizes power transfer path different in speed changer by the joint controlling each clutch by hydraulic coupling with being separated, thus the gearshift of controlled variator and commutation.Usually utilize speed-changer operation device to control with the break-make and pressure being separated the hydraulic fluid (such as, hydraulic oil) controlled to the joint of clutch.Especially, speed-changer operation device comprises clutch control valve, for the break-make of control flow check to the hydraulic fluid of clutch.For this reason, clutch control valve is mobile with the spool optionally allowed or block fluid is passed through in valve body under can being included in the effect of pressurized gas.In order to anti-fluid is leaked, between valve body and spool, be generally provided with seal ring.But when connecting pressurized gas so that movable valve plug, pressurized gas cognition flows to seal ring place, makes moisture contained in pressurized gas and impurity collect and stays in seal ring, cause the erosion to seal ring or destruction, thus clamping stagnation when causing fluid leakage or spool to move.
The utility model is intended to solve the above-mentioned or other problem existed in prior art.
Model utility content
On the one hand, the utility model provides a kind of clutch control valve, comprising: valve body, in described valve body, be provided with fluid passage; Spool, described spool blocking and do not block the fluid flowing in described fluid passage respectively with the joint of solenoidoperated cluthes thus with move between the primary importance of separation and the second place in described valve body, wherein can be provided with and stops fluid from the first seal arrangement leaked between described spool and described valve body on described valve body and/or described spool; Gas interconnecting part, described gas interconnecting part is for compressing spool described in gas channeling to control the movement between the first and second positions of described spool.Described clutch control valve also comprises the second seal arrangement be arranged between described spool and described gas interconnecting part, and described second seal arrangement is configured to the pressurized gas of permission from described gas interconnecting part and exerts a force to described spool but stop pressurized gas to flow to described first seal arrangement.
On the other hand, the utility model provides a kind of speed-changer operation device comprising above-mentioned clutch control valve.
Another aspect, the utility model provides a kind of machine comprising above-mentioned clutch control valve or above-mentioned speed-changer operation device.
Accompanying drawing explanation
Fig. 1 is the stereogram of a kind of example machine applied according to clutch device of the present utility model.
Fig. 2 and 3 is the sectional view of clutch control valve when being in hydraulic fluid disconnection and on-state according to the utility model one embodiment respectively.
Embodiment
Fig. 1 shows a kind of exemplary machine 100.Machine 100 can be such as Work machine, as wheel loader.Machine 100 also can be perform the operation relevant with specific industry (such as dig up mine, build, agricultural, transport etc.) and at the machine of middle other type any worked of various operating environment (such as mining site, building site, farm and road etc.), such as crawler excavator, wheel grader etc.
Machine 100 can comprise mainframe 30, operator's holding space as operator cabin 35 and working implement 36.In one embodiment, working implement 36 can be the scraper bowl being applied to loader.Machine 100 can comprise at least one and operate with working implement 36 and be connected and be used for controlling the oil cylinder 37 of working implement 36 action.There is traveling gear 40 in the lower disposed of machine 100, be used for supporting and mobile apparatus 100.In one embodiment, traveling gear 40 comprises wheel 41.
The transmission of power that power system by machine exports by the hydromechanical transmission (not shown) comprising fluid torque converter and power shift type speed changer by the machine 100 shown in Fig. 1 gives such as traveling gear 40.The speed-changer operation device of power shift type speed changer can comprise exemplarily illustrate in figs 2 and 3 according to clutch control valve 50 of the present utility model.Also show some other mechanisms with clutch control valve 50 compounding practice in Fig. 2 and 3, be well known in the art in view of their structure and effect and be not theme of the present utility model, omit their description here.
As shown in Figures 2 and 3, clutch control valve 50 mainly comprises valve body 1 and can the spool 2 of movement in valve body 1.In the illustrated embodiment in which, for the ease of dismounting and maintenance, valve body 1 and spool 2 are all made up of two parts separately.Particularly, spool 2 comprises insert body 21 and piston 22, and in the process of spool 2 movement, piston 22 keeps in touch with insert body 21 all the time.Correspondingly, valve body 1 comprises the insert body receiving portion 11 and piston receiver portion 12 of receiving insert body 21 and piston 22 respectively, and the mode that piston receiver portion 12 is such as connected by spiral is fixed in insert body receiving portion 11 in liquid-tight manner.It will be appreciated by those skilled in the art that insert body 21 and piston 22 and insert body receiving portion 11 and piston receiver portion 12 in fact also can be integrally formed separately, make valve body 1 and spool 2 be one piece component.
In valve body 1 (being more specifically insert body receiving portion 11 in the present embodiment), be provided with one or more solenoidoperated cluthes that are available for engage the fluid passage 13 flow through with the hydraulic fluid be separated, left and right two fluid passages 13 have been shown in the embodiment shown in Fig. 2 and 3, with the joint simultaneously controlling two clutches be separated.Spool 2 can move in valve body 1 between the primary importance of the fluid flowing of blocking respectively and not in obstruct fluid flow path 13 and the second place.For this reason, such as, each fluid passage 13 can be configured to be separated into upper and lower two sections by insert body 21, and the periphery of insert body 21 is provided with protuberance 24 and recess 25.When spool 2 is in primary importance as shown in Figure 2, circumferential protuberance 24 blocks epimere and/or the hypomere of fluid passage 13, and fluid can not be flow through from fluid passage 13.When spool 2 is in the second place as shown in Figure 3, the epimere of fluid passage 13 is communicated with via peripheral recess 25 with hypomere, makes fluid can flow to another one from the one epimere and hypomere.
In order to prevent the fluid in fluid passage 13 and/or other fluid of lubrication wet goods in clutch control valve from letting out between spool 2 and valve body 1, spool 2 and/or valve body 1 can be provided with the first seal arrangement.In the present embodiment, this first seal arrangement is such as being located at the seal ring 23 in the circumferential recess of piston 22.No matter spool 2 is static or motion, seal ring 23 seals up the gap between piston 22 and piston receiver portion 12 all the time.When spool 2 moves, seal ring 23 together moves with piston 22.
Clutch control valve 50 also comprises gas interconnecting part 3, and it is for compressing gas channeling spool 2 to control spool 2 movement between the first and second positions.More specifically, can be limited with aperture in gas interconnecting part 3, pressurized gas can import in valve body 1 via this aperture as shown in the dotted arrow in Fig. 3, and is moved to the left to make spool 2 the right side applied thrust of piston 22.The mode that gas interconnecting part 3 can such as be connected by spiral is fixed on the right-hand member in the piston receiver portion 12 of valve body 1 airtightly.
At the left end of spool 2, such as, spring 26 by spool 2 towards the direction bias voltage contrary with pressurized gas force direction.Therefore, if the illogical pressurized gas of gas interconnecting part 3, then spool 2 is biased into the primary importance shown in Fig. 2 by spring 26.
Between spool 2 (being more specifically piston 22) and gas interconnecting part 3, be also provided with the second seal arrangement 4, this second seal arrangement is configured to the pressurized gas of permission from gas interconnecting part 3 and exerts a force to spool 2 but stop pressurized gas to flow to the first seal arrangement 23.
According to a kind of illustrative configuration, second seal arrangement 4 can comprise the epithelium of air-locked flexibility, when gas interconnecting part 3 does not lead to pressurized gas, spool 2 is in primary importance on the right side under the effect of spring 26, piston 22 pushes epithelium, make epithelium as shown in Figure 2 in shape of collapsing, and when pressurized gas is imported between gas interconnecting part 3 and piston 22, epithelium is stretched by pushing away left as shown in Figure 3 along with spool 2.Epithelium can be made up of rubber or other suitable flexible material any known in the art.
In the embodiment shown in Fig. 2 and 3, epithelium is sachets, and this pouch has towards the opening of gas interconnecting part 3 and the bottom 6 that contacts with piston 22.Bottom 6 can fix or fixing on the piston 22, as long as 6 can contact that the thrust of pressurized gas is passed to piston 22 with the right side of piston 22 bottom when passing into pressurized gas.On the other hand, the edge of opening 5 of epithelium can such as be clamped between the piston receiver portion 12 of valve body 1 and gas interconnecting part 3, thus achieves the fixing of epithelium in a straightforward manner.Should point out, epithelium is not limited to above-mentioned sachets, but also can such as in the tubular of two ends all opening, pressurized gas can the right side of direct pushing piston 22 in this case, but the left side edge of opening of epithelium must be fixed on piston 22 airtightly right side in case gas flows to the first seal arrangement 23 on piston outer periphery.In addition, the right openings edge 5 of epithelium is also not limited to be clamped on the means of fixation between the piston receiver portion 12 of valve body 1 and gas interconnecting part 3 and fixed position, but on the piston receiver portion 12 that can (such as be not limited to, bonding) to be in any suitable manner fixed on valve body 1 airtightly or gas interconnecting part 3.
In the present embodiment, in epithelium, tensile stress is not produced when epithelium inflation valve for spreading.In other words, when epithelium be shown in Fig. 2 collapse shape time epithelium be pressurized, and the stretching, extension of the epithelium restorable process that is it, to this avoid when clutch control valve 50 repeatable operation epithelium because being constantly stretched and impaired inefficacy.The large I of epithelium returns to original state when being arranged in the second place that spool 2 moves to shown in Fig. 3 just, the now pot courage shape of epithelium as shown in Figure 3 in the non-pressurized of sidewall, certainly, epithelium also can be arranged in now its sidewall still by piston 22 to a certain degree to extrude.According to another kind of configuration, epithelium also can be arranged to collapse shape for its original state, and elastic stretching distortion occurs when inflation valve for spreading.
Described above is the embodiment that the second seal arrangement 4 is made up of the epithelium of flexibility, but the utility model is not limited thereto.Second seal arrangement can adopt and the pressurized gas from gas interconnecting part 3 can be allowed to exert a force to spool 2 but stop pressurized gas to flow to any structure of the first seal arrangement 23.Such as, the second seal arrangement 4 also can comprise can under the effect of pressurized gas and spring 26 optionally flexible and air-locked rigid construction.
industrial applicibility
When machine operation and when carrying out shifting gears or commutating, operator's controlled variator Effector carries out the break-make of clutch control valve 50, hydraulic control fluid is put the filling of clutch each in speed changer or unload, to realize joint or the separation of respective clutch thus.
Specifically, such as, in the state of fig. 2, gas interconnecting part 3 is the illogical pressurized gas because of machine brake such as, spool 2 (insert body 21 and piston 22) moves to right under the bias voltage of spring 26, make the fluid passage 13 in circumferential protuberance 24 choke valve body 1 on insert body 21, so the hydraulic fluid introduced from the epimere of fluid passage 13 can not flow to the hypomere of fluid passage 13, and then cannot clutch be flowed to and clutch be worked.Correspondingly, each clutch separation.In the state of fig. 2, the second seal arrangement 4 (i.e. epithelium) is in the shape of collapsing extruded by piston 22.
In the condition shown in figure 3, gas interconnecting part 3 such as prepares gearshift because the operator of machine operates speed-changer operation device and imports pressurized gas as the dotted line arrows.Being filled with of pressurized gas makes epithelium stretch left, epithelium and then promote the active force that piston 22 and insert body 21 overcome spring 26 and be moved to the left, circumferential protuberance 24 on insert body 21 is removed, and the epimere of fluid passage 13 is communicated with via the peripheral recess 25 on insert body 21 with hypomere, so the hydraulic fluid introduced from the epimere of fluid passage 13 flows to clutch through the hypomere of fluid passage 13, thus clutch is engaged, realize corresponding shift transformation.
In existing clutch control valve, between spool 2 (piston 22) and gas interconnecting part 3, be not provided with the second seal arrangement 4.Through gas interconnecting part 3 import the direct guide piston 22 of pressurized gas and can flow on piston 22 arrange the first seal arrangement (seal ring) 23 place, moisture contained in pressurized gas and impurity are collected to be stayed in seal ring, cause the erosion to seal ring or destruction, and then clamping stagnation when causing fluid leakage or spool to move.According to the utility model, the second seal arrangement 4 set up between spool 2 (piston 22) and gas interconnecting part 3 can stop pressurized gas to flow to the first seal arrangement place, thus avoids the problems referred to above.Meanwhile, the second seal arrangement 4 still allows pressurized gas exert a force to piston 22 and spool is moved, and can not affect the normal on-off function of clutch control valve.
Can be applicable in the speed-changer operation device of the power shift type speed changer of various machine, especially Work machine (as wheel loader) according to clutch control valve of the present utility model, but be not limited thereto, obviously it is also applicable to adopt and controls to engage and to be separated and with other occasions various of the clutch of gas hydraulic control power break-make with hydraulic coupling.
Obviously, for a person skilled in the art, when not departing from scope of the present utility model or spirit, various modifications and variations can be made to embodiment disclosed above.According to disclosed in this specification to practice of the present utility model, other embodiment of the present utility model is apparent to those skilled in the art.This specification and disclosed example thereof should be considered to just exemplary, and true scope of the present utility model is specified by claims and equivalent thereof.
Claims (10)
1. a clutch control valve (50), comprising:
Valve body (1), is provided with fluid passage (13) in described valve body;
Spool (2), described spool blocking and do not block the fluid flowing in described fluid passage (13) respectively with the joint of solenoidoperated cluthes thus with move between the primary importance of separation and the second place in described valve body (1), wherein can be provided with prevention fluid from the first seal arrangement (23) leaked between described spool and described valve body on described valve body (1) and/or described spool (2);
Gas interconnecting part (3), described gas interconnecting part supplies spool (2) described in compression gas channeling to control the movement between the first and second positions of described spool,
The feature of described clutch control valve (50) is also to comprise:
Be arranged on the second seal arrangement (4) between described spool (2) and described gas interconnecting part (3), described second seal arrangement is configured to the pressurized gas of permission from described gas interconnecting part (3) and exerts a force to described spool (2) but stop pressurized gas to flow to described first seal arrangement (23).
2. clutch control valve according to claim 1 (50), it is characterized in that, described second seal arrangement (4) comprises the epithelium of air-locked flexibility, when described gas interconnecting part (3) does not lead to pressurized gas, described epithelium is in shape of collapsing, and described epithelium stretches when pressurized gas is imported between described gas interconnecting part (3) and described spool (2).
3. clutch control valve according to claim 2 (50), it is characterized in that, described epithelium is sachets, and described pouch has towards the opening of described gas interconnecting part (3) and the bottom (6) that contacts with described spool (2).
4. clutch control valve according to claim 3 (50), is characterized in that, the edge of opening (5) of described epithelium is clamped between described valve body (1) and described gas interconnecting part (3).
5. clutch control valve according to claim 3 (50), is characterized in that, does not produce tensile stress when described epithelium stretches in described epithelium.
6. the clutch control valve (50) according to any one of claim 2 to 5, it is characterized in that, described epithelium is made up of rubber.
7. clutch control valve according to any one of claim 1 to 5 (50), is characterized in that, also comprises the spring (26) of described spool (2) towards the direction bias voltage contrary with pressurized gas force direction.
8. clutch control valve according to any one of claim 1 to 5 (50), it is characterized in that, the piston (22) that described spool (2) comprises insert body (21) and keeps in touch with described insert body, described piston has circumferential recess, and described first seal arrangement (23) is arranged on the seal ring in this circumferential recess.
9. a speed-changer operation device, is characterized in that comprising clutch control valve according to any one of claim 1 to 8 (50).
10. a machine (100), is characterized in that comprising clutch control valve according to any one of claim 1 to 8 (50) or speed-changer operation device according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520236101.9U CN204533493U (en) | 2015-04-17 | 2015-04-17 | Clutch control valve and speed-changer operation device and machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520236101.9U CN204533493U (en) | 2015-04-17 | 2015-04-17 | Clutch control valve and speed-changer operation device and machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204533493U true CN204533493U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520236101.9U Active CN204533493U (en) | 2015-04-17 | 2015-04-17 | Clutch control valve and speed-changer operation device and machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204533493U (en) |
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2015
- 2015-04-17 CN CN201520236101.9U patent/CN204533493U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |