CN208106865U - A kind of regeneration support leg valve and the leg control system equipped with the valve - Google Patents
A kind of regeneration support leg valve and the leg control system equipped with the valve Download PDFInfo
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- CN208106865U CN208106865U CN201721687457.XU CN201721687457U CN208106865U CN 208106865 U CN208106865 U CN 208106865U CN 201721687457 U CN201721687457 U CN 201721687457U CN 208106865 U CN208106865 U CN 208106865U
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Abstract
The utility model discloses a kind of regeneration support leg valve and equipped with the leg control system of the valve, belong to technical field of engineering machinery, stretching and retraction for controlled level oil cylinder and vertical oil cylinder, including reversal valve, check valve, logical valve and selector valve, the reversal valve is used to control the stretching and retraction of supporting leg, the selector valve is for selecting operating cylinder, when oil cylinder stretches out, the logical valve can be realized the rodless cavity of oil cylinder and rod chamber is also turned on oil inlet, it realizes differential connection, increases the stretching speed of oil cylinder.The utility model is back to rodless cavity by the hydraulic oil of control cylinder rod chamber reflux, and it works independently between each branch, it is unaffected mutually, hydraulic lock can be realized the rodless cavity locking of vertical support oil cylinder, anti- " soft leg " function of realizing engineering machinery operation, after each oil cylinder is shunk, in check valve and logical valve collective effect, the rod chamber of each oil cylinder is locked simultaneously, realizes anti-" falling leg ".
Description
Technical field
The utility model relates to engineering machinery hydraulic fields, and in particular to a kind of regeneration support leg valve and the supporting leg equipped with the valve
Control system.
Background technique
In engineering machinery, such as crane, high-altitude operation vehicle and road obstacle clearing vehicle increase to improve its working performance
Stability is equipped with leg control system, the stretching and retraction for controlled level and vertical supporting leg.Currently, engineering machinery
Leg control system mostly uses dedicated support leg valve, such as application No. is：01244646,200920199711 and
201110445082 is equal, it can be achieved that horizontal support legs oil cylinder simultaneously operation or single movement and vertical support oil cylinder while acts
Or single movement.But in actual use, operator also wants to when oil cylinder is overhanging, and overhanging speed is fast as far as possible, to mention
When high operating efficiency, especially horizontal support legs oil cylinder or vertical support oil cylinder move at the same time.
Application No. is 200920284027 " a kind of automatic outrigger stretching speed increasing device ", proposes a kind of supporting leg and stretch
Contracting speed is automatically increased device, its main feature is that：Increase travel switch on step-down multi-way valve valve body, to detect landing leg stretching letter
Number, control system issues throttle increase signal after receiving signal, passes through the fortune that engine oil door control module increases engine
Rotary speed, to realize the quick-expansion of supporting leg.But still it has some disadvantages：It needs to increase additional sensor, and passes through
The shortcomings that control system can realize, there are higher costs；Engine speed increase has certain delay, also increases oil consumption, high
Engine speed also bring high noise, there are use cost increase, operational comfort reduce the shortcomings that；For supporting leg
Speech, since what is mostly used is single rod oil cylinder out, retraction speed, which is higher than, stretches out speed, and what it is therefore, it is necessary to raising is to stretch out speed,
To stretch out and retract all carry out equal magnitude speed-raising it is necessary to the disadvantages that supporting leg retraction speed can be brought too fast instead.
Support leg valve is the core element of leg control system, and principle directly determines the performance of supporting leg movement, efficiency, energy
Consumption and cost.How to realize that cross cylinder and the quick of Vertical Cylinders stretch out, reduce energy consumption and reduce cost, is this field skill
Art personnel's technical issues that need to address.
Utility model content
To solve deficiency in the prior art, the utility model provides a kind of regeneration support leg valve and the supporting leg control equipped with the valve
System processed solves engineering truck hydraulic leg in the prior art and stretches out slow technical problem.
In order to achieve the above objectives, the utility model adopts the following technical solution：.
A kind of regeneration support leg valve, for what stretching and retraction with vertical oil cylinder of controlled level oil cylinder, it is characterised in that：Packet
Reversal valve, check valve, logical valve and selector valve are included, the reversal valve is used to control the stretching and retraction of supporting leg, the selector valve
For selecting operating cylinder, when oil cylinder stretches out, the logical valve can be realized the rodless cavity of oil cylinder with check valve collective effect
It is also turned on oil inlet with rod chamber, differential connection is realized, increases the stretching speed of oil cylinder.
A kind of regeneration support leg valve above-mentioned, it is characterized in that：The oil inlet P of the reversal valve connects hydraulic power source, reversal valve packet
The first actuator port A0 and the second actuator port B0 are included, described check valve one end connects the second actuator port B0, other end connection
To public hydraulic fluid port H, the logical valve connects the first actuator port by public hydraulic fluid port H, check valve one-way conduction the second actuator port B0
A0 and public hydraulic fluid port H, the working condition of the logical valve by the first actuator port A0 and the second actuator port B0 pressure size
Control, when selector valve work is upper, oil cylinder stretches out, and the pressure of the first actuator port A0 is greater than the second actuator port B0, can
Driving logical valve is in right position, so that bidirectionally conductive the first actuator port A0 and public hydraulic fluid port H, makes the oil liquid of the rod chamber of oil cylinder
It flow to the oil inlet C of selector valve through logical valve, increases the flow of oil inlet C.
A kind of regeneration support leg valve above-mentioned, it is characterized in that：The logical valve is 2/2-way unidirectional stop valve, logical valve bullet
Spring chamber is connected with the second actuator port of reversal valve B0, and the non-spring cavity of logical valve is connected with the first actuator port of reversal valve A0, logic
The spring cavity area of valve is greater than or equal to non-spring cavity area.
A kind of regeneration support leg valve above-mentioned, it is characterized in that：The reversal valve is three six logical commutations of Y type Median Function
Valve.
A kind of regeneration support leg valve above-mentioned, it is characterized in that：It is additionally provided between the oil inlet P and oil return inlet T of the reversal valve
Overflow valve.
A kind of regeneration support leg valve above-mentioned, it is characterized in that：The vertical oil cylinder is additionally provided with hydraulic lock.
A kind of regeneration support leg valve above-mentioned, it is characterized in that：The hydraulic lock is one-way hydraulic lock.
A kind of regeneration support leg valve above-mentioned, it is characterized in that：The selector valve, cross cylinder, vertical oil cylinder and hydraulic lock can
To realize multiple groups parallel connection.
A kind of leg control system, for controlling the stretching and retraction of support leg for engineered machine, it is characterized in that：The stretching of supporting leg
With retraction regeneration support leg valve above-mentioned.
The utility model beneficial effect achieved：
1. the differential regeneration of oil cylinder：When be upper working position, reversal valve in selector valve being upper working position, reversal valve
One actuator port A0 is connected to support leg valve oil inlet P, and reversal valve the second actuator port B0 is connected to support leg valve oil return inlet T, and C connects A (water
Flat oil cylinder) or B (vertical oil cylinder).For logical valve, the non-spring cavity being connected to the first actuator port of reversal valve A0 is high pressure, with
The spring cavity of reversal valve the second actuator port B0 connection is low pressure, and under the action of two cavity pressures difference, logical valve works in right position,
To diconnected reversal valve the first actuator port A0 and public hydraulic fluid port H.Pressure oil liquid is through support leg valve oil inlet P, reversal valve, choosing
Select valve, the hydraulic rodless cavity for being locked to (horizontally or vertically) oil cylinder；Under the promotion of rodless cavity, (horizontally or vertically) oil cylinder has bar
Chamber oil liquid through hydraulic lock, it is public have hydraulic fluid port to selector valve oil inlet C, collaborate with the high-voltage oil liquid of support leg valve, through selecting behind interflow
Valve, the hydraulic rodless cavity for being locked to oil cylinder realize the differential regeneration function of (horizontally or vertically) oil cylinder, are promoted (horizontally or vertically)
The stretching speed of oil cylinder.
2. preventing soft leg：After vertical supporting leg stretches out support ground, reversal valve and selector valve are in middle position.At this point, commutation
Valve the first actuator port A0 and the second actuator port of reversal valve B0 are connected to support leg valve oil return inlet T, and support leg valve oil inlet P is into changing
It is also connected to the middle position oil return circuit of valve with support leg valve oil return inlet T.Outside is without working fluid fuel feeding, under the action of hydraulic lock,
The rodless cavity locking of vertical support oil cylinder realizes anti-" soft leg " function of engineering machinery operation.
3. a parallel oil cylinder individually controls more than：When the selector valve, cross cylinder are in parallel with vertical oil cylinder multiple groups, vertically
It, can be only since each selector valve, cross cylinder, vertical oil cylinder and hydraulic lock are multiple groups parallel relationships when oil cylinder retracts
It is vertical to retract single or multiple vertical oil cylinders.When selector valve is one or more upper working positions, reversal valve is the next working position,
Reversal valve the first actuator port A0 is connected to support leg valve oil return inlet T, and reversal valve the second actuator port B0 is connected to support leg valve oil inlet P, C
It is connected with the actuator port B of the single or multiple selector valves retracted is needed.For logical valve, with the first actuator port of reversal valve A0
The non-spring cavity of connection is low pressure, and the spring cavity being connected to the second actuator port of reversal valve B0 is high pressure, in two cavity pressures difference
Under effect, logical valve works in left position, the public hydraulic fluid port H of unidirectional cutoff to the first actuator port of reversal valve A0.Oil liquid through supporting leg into
Hydraulic fluid port P, reversal valve, check valve, public hydraulic fluid port H to vertical oil cylinder rod chamber, and hydraulic lock is opened, in pushing away for rod chamber oil liquid
Under dynamic, the rodless cavity oil liquid of vertical oil cylinder is through hydraulic lock, selector valve, selector valve oil inlet C, reversal valve to support leg valve oil return inlet T.
For non-selected vertical supporting leg and horizontal support legs, the oil circuit of the oil inlet C of rodless cavity to selector valve 15 ends, therefore without dynamic
Make.It is thereby achieved that retracting while vertical supporting leg or individually retracting.
When single or multiple cross cylinders need to retract, single or multiple cross cylinders only need to be operated, keep it corresponding
C is connected in actuator port A, and the above-mentioned course of work and principle are equally applicable to cross cylinder.
4. anti-lost leg：After vertical supporting leg and horizontal support legs full reduced time, reversal valve and selector valve are in middle position.At this point,
Reversal valve the first actuator port A0 and the second actuator port of reversal valve B0 are connected to support leg valve oil return inlet T, support leg valve oil inlet
P is also connected to support leg valve oil return inlet T through the middle position oil return circuit of reversal valve.For logical valve, non-spring cavity and spring cavity are through changing
Into the Y type of valve 12, position is connected to, and is low pressure, and under spring force, logical valve works in left position, so that unidirectional cutoff is public
Hydraulic fluid port H to the first actuator port of reversal valve A0 altogether.Therefore, check valve and logical valve collective effect, to H mouthful namely vertical oil cylinder and
The rod chamber of cross cylinder locks simultaneously, thus anti-" falling leg " function when realizing engineer machinery change field.
Detailed description of the invention
Fig. 1 is the hydraulic schematic diagram of the utility model regeneration support leg valve；
Fig. 2 is the utility model regeneration support leg valve multiple groups selector valve, oil cylinder, hydraulic lock, catenation principle figure；
Attached drawing meaning：11- overflow valve；12- reversal valve；13- check valve；14- logical valve；15- selector valve；16- is hydraulic
Lock；17- cross cylinder；The vertical oil cylinder of 18-.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.Following embodiment is only used for clearly illustrating this
The technical solution of utility model, and cannot be used as a limitation the limitation protection scope of the utility model.
As shown in Figure 1：A kind of regeneration support leg valve, for what stretching and retraction with vertical oil cylinder of controlled level oil cylinder,
It is characterized in that：Including reversal valve 12, check valve 13, logical valve 14 and selector valve 15, reversal valve 12 is used to control the stretching of supporting leg
With retraction, selector valve 15 is for selecting operating cylinder, and when oil cylinder stretches out, logical valve 14 and check valve 13 can be realized oil cylinder
Rodless cavity and rod chamber are also turned on oil inlet, realize differential connection, increase the stretching speed of oil cylinder.
Further：The oil inlet P of reversal valve 12 connects hydraulic power source, and reversal valve 12 includes the first actuator port A0 and second
Actuator port B0,13 one end of check valve connect the second actuator port B0, and the other end connects public hydraulic fluid port H, and check valve 13 is unidirectionally led
Logical second actuator port B0 to public hydraulic fluid port H, logical valve 14 connect the first actuator port A0 and public hydraulic fluid port H, logical valve 14
Working condition is controlled by the pressure size of the first actuator port A0 and the second actuator port B0, when the work of selector valve 15 is upper,
Oil cylinder stretches out, and the pressure of the first actuator port A0 is greater than the second actuator port B0, and logical valve 14 can be driven to be in right position, thus
Bidirectionally conductive the first actuator port A0 and public hydraulic fluid port H, makes the oil liquid of the rod chamber of oil cylinder flow to selector valve 15 through logical valve 14
Oil inlet C, increase oil inlet C flow.
Further：Logical valve 14 is 2/2-way unidirectional stop valve, 14 spring cavity of logical valve and 12 second work of reversal valve
Make hydraulic fluid port B0 to be connected, the non-spring cavity of logical valve 14 is connected with the first actuator port of reversal valve A0, the spring cavity area of logical valve 14
More than or equal to non-spring cavity area.When hydraulic cylinder stretches out, the pressure of the first actuator port A0 is greater than the second actuator port B0,
The pressure difference driving logical valve 14 of the two is in right position, thus bidirectionally conductive the first actuator port A0 and public hydraulic fluid port H, when hydraulic
When cylinder retracts, the pressure of the first actuator port A0 makes logical valve 14 be in left position, one-way conduction less than the second actuator port B0
First actuator port A0 and public hydraulic fluid port H (A0 can flow to H through logical valve, and H can not flow to A0 through logical valve).
Further：Reversal valve 12 is three six-way transfer valves of Y type Median Function, and the effect of reversal valve 12 is control oil
The stretching and retraction of cylinder, when middle position works, the Y type Median Function of reversal valve 12 is by reversal valve the first actuator port A0 and commutation
Valve the second actuator port B0 is connected to support leg valve oil return inlet T simultaneously, in off-load when position A0, B0 residual pressure, with protect
Demonstrate,prove the normal work of hydraulic lock.
Further：Overflow valve 11 is additionally provided between the oil inlet P and oil return inlet T of reversal valve 12, overflow valve 11 is hydraulic
Mainly play level pressure overflow, pressure stabilizing, system unloaded and safeguard protection effect in equipment.
Further：Multiple groups parallel connection may be implemented in selector valve 15, cross cylinder, vertical oil cylinder and hydraulic lock 16.
Further：Hydraulic lock 16 is one-way hydraulic lock, and hydraulic lock 16 is installed on the oil cylinder placed vertically, can be by band
Loaded oil cylinder is locked for a long time in fixed position, can prevent from occurring due to various reasons due to reversal valve or other valves
Pressure release phenomenon prevents the piston rod of oil cylinder mobile.
As shown in Figure 2：It is in parallel that with vertical oil cylinder 18 multiple groups may be implemented in selector valve 15, cross cylinder 17.Since this is practical
It is novel to be mainly used for supporting vehicle body when engineering truck parking, therefore in the case where more, the utility model is in parallel using four groups
Mode carry out operation, but due to being equipped with independent selector valve 15, cross cylinder 17 and vertical oil cylinder 18 in each parallel branch,
Therefore each branch can work independently, unaffected between each other.
When work, stretching horizontal support legs, i.e. cross cylinder 17 stretch out first, and selector valve 15 is the next working position, i.e. conducting C
Multiple selector valves 15 can be operated simultaneously if multiple groups branch in parallel with B, reversal valve 12 is upper working position, i.e. conducting P with
A0, high-voltage oil liquid enter to the rodless cavity of cross cylinder 17 through P, A0, C, A, on the other hand, since A0 pressure is greater than B0,
A0 and H bidirectionally conductive, oil liquid in cross cylinder 17 through public hydraulic fluid port H (H can not be connected to B0 in check valve 13), logical valve 14,
C is flowed to, the stretching speed of cross cylinder 17 is increased, realizes the differential regeneration of cross cylinder 17.What vertical oil cylinder 18 stretched out
Process is same as described above, and difference is only that selector valve 15 is in upper (C leads to B), and the differential of vertical oil cylinder 18 equally may be implemented
Regeneration.After all hydraulic cylinder, which stretches out, to be completed, reversal valve 12 is in middle position, and the Y type Median Function of reversal valve 12 is by reversal valve
First actuator port A0 and reversal valve the second actuator port B0 is connected to support leg valve oil return inlet T simultaneously, in off-load when position
The residual pressure of A0, B0 prevent vertical oil cylinder 18 from pressure release occur to guarantee the normal work of hydraulic lock.List in the present embodiment
It is that the second actuator port can be connected when oil cylinder (including cross cylinder 17 and vertical oil cylinder 18) retracts to the effect of valve 13
The rod chamber of B0 and oil cylinder, and when oil cylinder stretches out, logical valve can be flowed to when the hydraulic oil of rod chamber is back to public hydraulic fluid port H
14 for increasing the stretching speed of oil cylinder, and the hydraulic oil of rod chamber flow to the second actuator port B0 when oil cylinder being avoided to stretch out.
When operation finishes, it is necessary first to retract vertical oil cylinder 18, selector valve 15 is adjusted to upper (C leads to B), at reversal valve 12
In bottom, the rod chamber of H, hydraulic lock 16 and vertical oil cylinder 18 are connected by check valve 13 by B0, and hydraulic lock 16 unlocks, and make vertical oil
The chosen valve 15 of oil liquid in 18 rodless cavity of cylinder flow to oil return inlet T, and selector valve 15 is adjusted to the next (C leads to A), repeats above-mentioned step
Suddenly the retraction of cross cylinder 17 can be completed.
After vertical supporting leg and horizontal support legs full reduced time, reversal valve 12 and selector valve 15 are in middle position.At this point, reversal valve
12 first actuator port A0 and the second actuator port B0 are connected to support leg valve oil return inlet T, middle position of the oil inlet P through reversal valve 12
Oil return circuit is also connected to support leg valve oil return inlet T.For logical valve 14, non-spring cavity and spring cavity are through in the Y type of reversal valve 12
Position connection, is low pressure, and under spring force, the work of logical valve 14 is in left position, so that the public hydraulic fluid port H of unidirectional cutoff is to changing
To the first actuator port of valve A0.Therefore, check valve 13 and 14 collective effect of logical valve, to public hydraulic fluid port H namely vertical oil cylinder 18
It is locked simultaneously with the rod chamber of cross cylinder 17, thus anti-" falling leg " function when realizing engineer machinery change field.
The present embodiment also discloses a kind of leg control system, for controlling the stretching and retraction of support leg for engineered machine,
It is characterized in：The stretching of supporting leg is controlled with retraction using the regeneration support leg valve of the present embodiment.
Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill people of the art
Member for, without deviating from the technical principle of the utility model, several improvement and deformations can also be made, these improve and
Deformation also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of regeneration support leg valve, stretching and retraction for controlled level oil cylinder and vertical oil cylinder, it is characterised in that：Including changing
To valve (12), check valve (13), logical valve (14) and selector valve (15), the reversal valve (12) be used to control the stretching of supporting leg with
Retraction, the selector valve is for selecting operating cylinder, and when oil cylinder stretches out, the logical valve (14) and check valve (13) are made jointly
It is also turned on oil inlet with the rodless cavity and rod chamber that can be realized oil cylinder, differential connection is realized, increases the stretching speed of oil cylinder.
2. a kind of regeneration support leg valve according to claim 1, it is characterized in that：The oil inlet P of the reversal valve (12) connects
Hydraulic power source, reversal valve (12) include the first actuator port A0 and the second actuator port B0, and described check valve (13) one end connects the
Two actuator port B0, the other end connect public hydraulic fluid port H, check valve (13) one-way conduction the second actuator port B0 to public hydraulic fluid port H,
The logical valve (14) connects the first actuator port A0 and public hydraulic fluid port H, and the working condition of the logical valve (14) is by the first work
The pressure size control for making hydraulic fluid port A0 and the second actuator port B0, when selector valve (15) work is in upper, oil cylinder stretching, the first work
The pressure for making hydraulic fluid port A0 is greater than the second actuator port B0, logical valve (14) can be driven to be in right position, thus bidirectionally conductive first
Actuator port A0 and public hydraulic fluid port H, makes the oil liquid of the rod chamber of oil cylinder flow to the oil inlet of selector valve (15) through logical valve (14)
C increases the flow of oil inlet C.
3. a kind of regeneration support leg valve according to claim 2, it is characterized in that：The logical valve (14) is that 2/2-way is unidirectional
Shut-off valve, logical valve (14) spring cavity are connected with (12) second actuator port B0 of reversal valve, logical valve (14) non-spring cavity with change
It is connected to valve the first actuator port A0, the spring cavity area of logical valve (14) is greater than or equal to non-spring cavity area.
4. a kind of regeneration support leg valve according to claim 1 or 2, it is characterized in that：The reversal valve (12) is Y type middle-position machine
Three six-way transfer valves of energy.
5. a kind of regeneration support leg valve according to claim 1 or 2, it is characterized in that：The oil inlet P of the reversal valve (12) with
Overflow valve (11) are additionally provided between oil return inlet T.
6. a kind of regeneration support leg valve according to claim 1, it is characterized in that：The vertical oil cylinder is additionally provided with hydraulic lock
(16)。
7. a kind of regeneration support leg valve according to claim 6, it is characterized in that：The hydraulic lock (16) is one-way hydraulic lock.
8. a kind of leg control system, for controlling the stretching and retraction of support leg for engineered machine, it is characterized in that：The stretching of supporting leg with
Retraction uses regeneration support leg valve described in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721687457.XU CN208106865U (en) | 2017-12-07 | 2017-12-07 | A kind of regeneration support leg valve and the leg control system equipped with the valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721687457.XU CN208106865U (en) | 2017-12-07 | 2017-12-07 | A kind of regeneration support leg valve and the leg control system equipped with the valve |
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| Publication Number | Publication Date |
|---|---|
| CN208106865U true CN208106865U (en) | 2018-11-16 |
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ID=64131379
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721687457.XU Active CN208106865U (en) | 2017-12-07 | 2017-12-07 | A kind of regeneration support leg valve and the leg control system equipped with the valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035928A (en) * | 2017-12-07 | 2018-05-15 | 徐州徐工随车起重机有限公司 | A kind of regeneration support leg valve and the leg control system equipped with the valve |
-
2017
- 2017-12-07 CN CN201721687457.XU patent/CN208106865U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035928A (en) * | 2017-12-07 | 2018-05-15 | 徐州徐工随车起重机有限公司 | A kind of regeneration support leg valve and the leg control system equipped with the valve |
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