CN204458607U - Multipurpose accumulating type trimmer valve - Google Patents
Multipurpose accumulating type trimmer valve Download PDFInfo
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- CN204458607U CN204458607U CN201520050522.2U CN201520050522U CN204458607U CN 204458607 U CN204458607 U CN 204458607U CN 201520050522 U CN201520050522 U CN 201520050522U CN 204458607 U CN204458607 U CN 204458607U
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Abstract
The utility model relates to a kind of engineering machinery Powershift transmission control valve, especially relates to a kind of multipurpose accumulating type trimmer valve.It mainly solves the technical problem that speed change operating valve shifting shock existing for prior art is large, affect the working life of gearbox and the travelling comfort of operating personnel etc.The utility model comprises valve body, establishes pressure control mechanism, energy-storage buffering mechanism in valve body, is communicated with between Liang Ge mechanism by the oil groove of the oil circuit be located in valve body with valve body bottom surface, and valve body bottom surface establishes filler opening to dock with the hydraulic power of gearbox oil supply system; Oil outlet docks with the filler opening of speed change operating valve, return opening docks with speed change operating valve gearbox return opening, valve body bottom surface is also provided with working connection, oil circuit, accumulating mechanism return opening, transition oil circuit, accumulation of energy adjustment return opening, in the corresponding position valve external equipment oil outlet of filler opening, oil outlet, return opening, filler opening for subsequent use, return opening for subsequent use and main pressure tap.
Description
Technical field
The utility model relates to a kind of engineering machinery Powershift transmission control valve, especially relates to a kind of multipurpose accumulating type trimmer valve.
Background technique
China's existing ZL20/30 loader coupling ZL20/30 (BS428) gearbox is the leading products of domestic middle-size and small-size loader.Chinese patent 2011.07.27 discloses the gearbox used variable-speed operating valve (Authorization Notice No.: CN201909028U) blocking junction plane oil impregnate, and the ZL15 gearbox of mini-excavator coupling, is the leading products of the engineering machinery such as domestic mini-excavator.Chinese patent 2013.01.09 discloses novel two manipulation valve rod power gear shift speed change control valve (Authorization Notice No.: CN202659972U).ZL20/30 speed change operating valve is 1 design before single valve bar 2.ZL15 speed change operating valve is double stub shaft, wherein valve rod controlling party to, before a valve rod controls 2 of gear, 2 fall design.Because these two kinds of speed change operating valves do not have buffer structure to design, do not possess hydraulic cushion, impact large when there is gear shift (commutation), have a strong impact on the travelling comfort of gearbox working life and operating personnel, New engineering machinery gearbox long lifetime, high-performance, the excellent technical problem such as handling can not be met.The large technical problem of marine gearbox reversing impact can be solved simultaneously.
Model utility content
The utility model is to provide a kind of multipurpose accumulating type trimmer valve, and it mainly solves the technical problem that speed change operating valve shifting shock existing for prior art is large, affect the working life of gearbox and the travelling comfort of operating personnel etc.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
Multipurpose accumulating type trimmer valve of the present utility model, comprise valve body, establish pressure control mechanism, energy-storage buffering mechanism in described valve body, be communicated with between Liang Ge mechanism by the oil groove of the oil circuit be located in valve body with valve body bottom surface, valve body bottom surface establishes filler opening to dock with the hydraulic power of gearbox oil supply system; Oil outlet docks with the filler opening of speed change operating valve, return opening docks with speed change operating valve gearbox return opening, valve body bottom surface is also provided with working connection, oil circuit, accumulating mechanism return opening, transition oil circuit, accumulation of energy adjustment return opening, in the corresponding position valve external equipment oil outlet of filler opening, oil outlet, return opening, filler opening for subsequent use, return opening for subsequent use and main pressure tap.Filler opening, oil outlet, return opening separately establish threaded coupling, are convenient to complete machine layout and install.Valve body is established main pressure tap, can to Host Transfer principal pressure signal by sensor.
As preferably, described pressure control mechanism comprises the first hole back-up ring be located in the valve opening of valve body, stop collar, spacing jump ring, control piston, the second hole back-up ring, stop collar and the in-built relief spring of control piston, main oil-hole is established at control piston center, control piston peripheral hardware oil suction chamber is communicated with filler opening, and control piston side establishes pressure-reduction outlet to be communicated with return opening.From filler opening incoming pressure oil during work, high pressure is formed at the oil suction chamber of control piston, promote to move in control piston compression relief spring, at this moment the decompression return opening of control piston is opened, filler opening is communicated with decompression return opening, part pressure oil enters torque-converters or fuel tank by decompression return opening, main oil pressure being set in 1.30 ~ 1.70Mpa(main oil pressure by relief spring can by different main frame requirement setting pressure scope), the pressure oil set enters energy-storage buffering mechanism by the main oil-hole at pressure controlled valve center.Working connection is communicated to the oil outlet of valve body bottom surface to Host Transfer hydraulic energy.(flow can set within the specific limits by different main frame requirement.) establish main pressure tap above valve body, can to Host Transfer principal pressure signal by sensor.
As preferably, described energy-storage buffering mechanism comprises that to be located in valve body valve opening interior to piston, first damping spring, second damping spring, limiting stopper, 3rd damping spring, the outer end of the first damping spring is set with export-oriented piston, export-oriented piston centre establishes damping hole, export-oriented piston jacket dress protecgulum, accumulation of energy oil circuit is established in protecgulum, sealing paper washer is set between protecgulum and valve body, paper washer on dividing plate, protecgulum is screwed on valve body, working connection is communicated with one-way valve oil circuit, the in-built check valve spring of unidirectional valve pocket, one-way valve presses closer the one-way valve hydraulic fluid port of dividing plate, one-way valve hydraulic fluid port is other establishes throttle orifice.When speed change operating valve starts gear shift, handle valve rod instantaneous axis to slip, control valve master (work) oil circuit and return opening have moment open and close and the speed change box clutch oil cylinder after being switched gear to have individual hydraulic oil full process fast, at this moment the rapid decompression of the working connection of energy-storage buffering valve, one-way valve is opened fast, high pressure between protecgulum and export-oriented piston disappears, make interiorly to move outside piston, opened by the interior energy-storage buffering mechanism return opening to piston closes, working connection is made to be communicated with release with return opening, at this moment the pressure controlled valve of pressure reduction structure loses hydro-cushion, the decompression return opening of control piston expands rapidly, main oil pressure is made to rapidly drop to below 0.5Mpa from 1.30 ~ 1.70Mpa before control valve gear shift, when speed change operating valve shift end, working connection starts boosting, the closed check valve of energy-storage buffering mechanism, the partial high pressure oil of working connection enters to be formed in the export-oriented piston of pushed at high pressure between the export-oriented piston outer end of accumulation of energy and protecgulum through throttle orifice and moves, by first, second, 3rd damping spring, move in piston in limiting stopper compression promotes, energy-storage buffering mechanism return opening is closed near the first hole retainer ring spacing, main oil pressure is made to rise to setting pressure before gear shift, the buck-boost process time 0.8 ~ 1.8S(of gear shift can set by different main frame requirement pressure rising time within the specific limits), the balanced action in pressure increase process is played in the buffer damping hole of export-oriented piston centre, interiorly to move axially inside and outside piston is in pressure equalization process, control the open and close that accumulation of energy regulates return opening, (accumulation of energy regulates return opening to be communicated with by transition oil circuit with energy-storage buffering mechanism return opening, and be connected with decompression return opening by oil-return groove), overcome moment overshoot peak value during main oil pressure boosting, make boost process (boosting curve) more reasonable, reach gearbox smooth shifting better, effect that flexibility is run in.
As preferably, the oil outlet for subsequent use of described valve body is sealed by oil outlet plug screw for subsequent use and gasket seal, the return opening for subsequent use of valve body side is sealed by return opening plug screw for subsequent use and compound gasket, and the filler opening for subsequent use on rear side of valve body is sealed by filler opening plug screw for subsequent use and O type circle.
Therefore, the utility model multipurpose energy-storage buffering valve possesses good energy-storage buffering function, it is the little assembly of a kind of externally connected type, tipping is convenient, before the speed change operating valve that do not possess power shfit or the large speed change operating valve filler opening of power shfit hydraulic shock can be arranged on, the technical problem that thorough solution gearbox gear-shift impacts, can effectively solve ZL20/30 loading machine gearbox, the technical barrier that ZL15 mini-excavator gearbox dynamic shifting shock is large, the development in pluralism of Novel gear box can be met, the technical innovation of old product can be solved again, the large technical problem of marine gearbox reversing impact can be solved simultaneously.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of appearance schematic diagram of the present utility model;
Accompanying drawing 2 is a kind of structural representations of the present utility model;
Accompanying drawing 3 is oil circuit of the present utility model, hydraulic fluid port schematic diagram;
Accompanying drawing 4 is one-way valve of the present utility model, throttle orifice schematic diagram.
Component in figure, position and numbering: valve body 1, main pressure tap 2, oil outlet plug screw 3 for subsequent use, gasket seal 4, compound gasket 5, return opening plug screw 6 for subsequent use, dividing plate 7, protecgulum 8, first hole back-up ring 9, stop collar 10, spacing jump ring 11, control piston 12, relief spring 13, second hole back-up ring 14, oil suction chamber 15, O type circle 16, filler opening plug screw 17 for subsequent use, one-way valve oil circuit 18, unidirectional valve pocket 19, check valve spring 20, one-way valve 21, accumulation of energy oil circuit 22, export-oriented piston 23, damping hole 24, 3rd damping spring 25, second damping spring 26, first damping spring 27, limiting stopper 28, interior to piston 29, working connection 30, oil outlet 31, main oil-hole 32, filler opening 33, pressure-reduction outlet 34, return opening 35, oil circuit 36, energy-storage buffering mechanism return opening 37, transition oil circuit 38, accumulation of energy regulates return opening 39, one-way valve hydraulic fluid port 40, throttle orifice 41, lower seal pad 42, upper sealing gasket 43.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: the multipurpose accumulating type trimmer valve of this example, as Fig. 1, comprise valve body 1, valve body is established main pressure tap 2, oil outlet for subsequent use is sealed by oil outlet plug screw 3 for subsequent use and gasket seal 4, valve body side equipment return opening, is sealed by return opening plug screw 6 for subsequent use and compound gasket 5, equipment filler opening on rear side of valve body, is sealed by filler opening plug screw 17 for subsequent use and O type circle 16.
As Fig. 3, valve body bottom surface establishes working connection 30 to be communicated with oil outlet 31 with pressure control mechanism, energy-storage buffering mechanism, filler opening 33 is communicated with oil suction chamber 15, pressure-reduction outlet 34 is communicated with control mechanism with pressure, and the return opening 35 that pressure-reduction outlet is close to regulates return opening 39 to be communicated with through oil circuit 36 with energy-storage buffering mechanism return opening 37, transition oil circuit 38, accumulation of energy.
As Fig. 2, the first hole back-up ring 9 is established in the valve opening of valve body, fill stop collar 10, spacing jump ring 11, control piston 12, second hole back-up ring 14 successively laterally, stop collar and the in-built relief spring 13 of control piston, main oil-hole 32 is established at control piston center, control piston peripheral hardware oil suction chamber 15 is communicated with filler opening 33, and control piston side establishes pressure-reduction outlet 34 to be communicated with return opening 35.With back-up ring opposite side, outwards dress is interior to piston 29 successively in the first hole, interior to in-built first damping spring 27 of piston, in-built second damping spring 26 of first damping spring, in-built 3rd damping spring 25 of second damping spring and limiting stopper 28, first damping spring outer end is set with export-oriented piston 23, export-oriented piston centre establishes damping hole 24, and export-oriented piston jacket dress protecgulum 8, establishes accumulation of energy oil circuit 22 in protecgulum.As shown in Figure 4, set sealing paper washer 42, dividing plate 7, upper sealing paper washer 43 between protecgulum and valve body, separated interior to piston and export-oriented piston by dividing plate.As shown in Figure 2, one-way valve oil circuit 18 in valve body, is established to be communicated with working connection 31, the in-built check valve spring 20 of unidirectional valve pocket 19, one-way valve 21.As shown in Figure 4, one-way valve presses closer the one-way valve hydraulic fluid port 40 on dividing plate, and one-way valve hydraulic fluid port is other establishes throttle orifice 41.
The foregoing is only specific embodiment of the utility model, but structure characteristic of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and the change done or modification are all encompassed among the scope of the claims of the present utility model.
Claims (4)
1. a multipurpose accumulating type trimmer valve, comprise valve body (1), it is characterized in that establishing pressure control mechanism, energy-storage buffering mechanism in described valve body (1), be communicated with by the oil groove of the oil circuit be located in valve body with valve body bottom surface between Liang Ge mechanism, valve body bottom surface establishes filler opening (33) to dock with the hydraulic power of gearbox oil supply system; Oil outlet (31) docks with the filler opening of speed change operating valve, return opening (35) docks with speed change operating valve gearbox return opening, valve body (1) bottom surface is also provided with working connection (30), oil circuit (36), accumulating mechanism return opening (37), transition oil circuit (38), accumulation of energy adjustment return opening (39), in the corresponding position valve external equipment oil outlet of filler opening, oil outlet, return opening, filler opening for subsequent use, return opening for subsequent use and main pressure tap (2).
2. multipurpose accumulating type trimmer valve according to claim 1, it is characterized in that described pressure control mechanism comprise be located at valve body (1) valve opening in the first hole back-up ring (9), stop collar (10), spacing jump ring (11), control piston (12), the second hole back-up ring (14), stop collar and the in-built relief spring of control piston (13), main oil-hole (32) is established at control piston center, control piston peripheral hardware oil suction chamber (15) is communicated with filler opening (33), and control piston side establishes pressure-reduction outlet (34) to be communicated with return opening (35).
3. multipurpose accumulating type trimmer valve according to claim 1 and 2, it is characterized in that described energy-storage buffering mechanism comprises that to be located in valve body (1) valve opening interior to piston (29), first damping spring (27), second damping spring (26), limiting stopper (28), 3rd damping spring (25), the outer end of the first damping spring is set with export-oriented piston (23), export-oriented piston centre establishes damping hole (24), export-oriented piston jacket dress protecgulum (8), accumulation of energy oil circuit (22) is established in protecgulum, sealing paper washer (42) is set between protecgulum and valve body, the upper paper washer (43) of dividing plate (7), protecgulum is screwed on valve body, working connection (31) is communicated with one-way valve oil circuit (18), unidirectional valve pocket (19) in-built check valve spring (20), one-way valve (21) presses closer the one-way valve hydraulic fluid port (40) of dividing plate (7), one-way valve hydraulic fluid port is other establishes throttle orifice (41).
4. multipurpose accumulating type trimmer valve according to claim 1 and 2, it is characterized in that the oil outlet for subsequent use of described valve body (1) is sealed by oil outlet plug screw (3) for subsequent use and gasket seal (4), the return opening for subsequent use of valve body side is sealed by return opening plug screw (6) for subsequent use and compound gasket (5), and the filler opening for subsequent use on rear side of valve body is sealed by filler opening plug screw (17) for subsequent use and O type circle (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520050522.2U CN204458607U (en) | 2015-01-26 | 2015-01-26 | Multipurpose accumulating type trimmer valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520050522.2U CN204458607U (en) | 2015-01-26 | 2015-01-26 | Multipurpose accumulating type trimmer valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204458607U true CN204458607U (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520050522.2U Expired - Fee Related CN204458607U (en) | 2015-01-26 | 2015-01-26 | Multipurpose accumulating type trimmer valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204458607U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122143A (en) * | 2016-06-29 | 2016-11-16 | 杭州萧山叉车配件有限公司 | Loader power shift level 2 buffering handles valve |
-
2015
- 2015-01-26 CN CN201520050522.2U patent/CN204458607U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122143A (en) * | 2016-06-29 | 2016-11-16 | 杭州萧山叉车配件有限公司 | Loader power shift level 2 buffering handles valve |
| CN106122143B (en) * | 2016-06-29 | 2018-03-09 | 杭州萧山叉车配件有限公司 | Loading machine power shift level 2 buffering manipulates valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20200126 |