CN202520678U - Hydraulic lifting control device - Google Patents
Hydraulic lifting control device Download PDFInfo
- Publication number
- CN202520678U CN202520678U CN2012201378216U CN201220137821U CN202520678U CN 202520678 U CN202520678 U CN 202520678U CN 2012201378216 U CN2012201378216 U CN 2012201378216U CN 201220137821 U CN201220137821 U CN 201220137821U CN 202520678 U CN202520678 U CN 202520678U
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- valve
- oil
- hydraulic cylinder
- control
- oil hydraulic
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Abstract
The utility model relates to a hydraulic lifting control device, which comprises an oil hydraulic cylinder and a combined valve block, wherein the combined valve block is used for controlling the lifting of a piston rod of the oil hydraulic cylinder. The combined valve block comprises a check valve, a proportional directional valve, a balanced valve, a first magnetic exchange valve, a one-way throttle valve which are sequentially communicated between a hydraulic oil inlet and a rodless chamber of the oil hydraulic cylinder. The combined valve block also comprises a hydraulic control one-way valve which is communicated with an inlet of a rod chamber of the oil hydraulic cylinder, and the hydraulic control one-way valve is communicated with an oil storage tank through the proportional directional valve. A guide port of the hydraulic control one-way valve is communicated with the proportional directional valve. An electromagnetic relief valve which can control pressure oil flows is also connected between an inlet of the check valve and the oil storage tank, and the electromagnetic relief valve is formed by connecting a relief valve with a second magnetic exchange valve in parallel. The hydraulic lifting control device can precisely control the oil hydraulic cylinder to execute micro lifting up and lifting down so as to utilize the oil hydraulic cylinder to control a supported heavy workpiece, so that the precise lifting is realized, and the processing technology is met.
Description
Technical field
The utility model relates to hydraulic circuit control device, relates in particular to a kind of combining unit valve control oil hydraulic cylinder that utilizes, and goes up and down to carry out the oil hydraulic cylinder fine motion, can be applicable to utilize oil hydraulic cylinder control heavy workpiece to carry out accurate fine motion and goes up and down.
Background technique
In the existing technology; Often need utilize oil hydraulic cylinder control heavy workpiece to carry out rises or descends; Owing to can not control the filler opening of oil hydraulic cylinder and the oily changes in flow rate ratio between the oil outlet well; Can not control the oil pressure of the oil outlet of oil hydraulic cylinder well, therefore carry out fine motion and rise or descend, not have fine way to say for the heavy workpiece that utilizes oil hydraulic cylinder control processing.
Summary of the invention
In order to remedy above deficiency, the utility model provides a kind of hydraulic lifting control gear, can accurately control oil hydraulic cylinder and carry out fine motion rising or decline, thereby utilize the supported heavy workpiece of oil hydraulic cylinder control, realizes accurately going up and down, and satisfies processing technology.
The technological scheme of the utility model is achieved in that a kind of hydraulic lifting control gear; Comprise oil hydraulic cylinder, control the combination valve block that this hydraulic cylinder piston rod goes up and down; This combination valve block comprises check valve, proportion directional valve, equilibrium valve, first solenoid directional control valve and the one-way throttle valve between the rodless cavity chamber inlet that is communicated with hydraulic oil inlet and this oil hydraulic cylinder successively; The Pilot operated check valve that also comprises the rod chamber chamber inlet that is communicated with this oil hydraulic cylinder; This Pilot operated check valve is communicated with fuel reserve tank through this proportion directional valve again, and the guide port of this Pilot operated check valve is communicated with this proportion directional valve.
As the further improvement of the utility model, also be connected to the electromagnetic relief valve of may command pressure oil stream between the inlet of this check valve and this fuel reserve tank, this electromagnetic relief valve is formed in parallel by a relief valve and second solenoid directional control valve.
Further improvement as the utility model; Also be provided with a signaling control unit; Control the station of this first solenoid directional control valve and second solenoid directional control valve and the spool travel of controlling this proportion directional valve, this signaling control unit is exported the Control Parameter of setting through display device again simultaneously.
As the further improvement of the utility model, the P mouth of this proportion directional valve links to each other with fuel reserve tank with this check valve outlet respectively with the T mouth, and the A mouth of this proportion directional valve links to each other with Pilot operated check valve with equilibrium valve respectively with the B mouth.
The useful technique effect of the utility model is: when oil hydraulic cylinder is carried out decline; The oil of hydraulic oil inlet arrives this proportion directional valve through this check valve; This proportion directional valve meets the accurately required oily flow of decline of hydraulic cylinder piston rod with the adjustment of pressure oil flow; Get into the rod chamber chamber inlet of oil hydraulic cylinder again through this Pilot operated check valve; And the oil of the rodless cavity chamber inlet of oil hydraulic cylinder has been got back to this fuel reserve tank through this one-way throttle valve, first solenoid directional control valve and equilibrium valve, realized that the piston rod of oil hydraulic cylinder descends, thereby the heavy workpiece of also realizing oil hydraulic cylinder control descends accurately; When oil hydraulic cylinder is carried out rising; The oil of hydraulic oil inlet arrives this proportion directional valve through this check valve; This proportion directional valve is adjusted to the pressure oil flow and meets the accurately required oily flow of rising of oil hydraulic cylinder; Get into the rodless cavity chamber inlet of oil hydraulic cylinder again through this equilibrium valve, first solenoid directional control valve, one-way throttle valve, and the oil of the rod chamber chamber inlet of oil hydraulic cylinder is got back in this fuel reserve tank through this Pilot operated check valve, proportion directional valve, got into this Pilot operated check valve guide port and open it having an oil this proportion directional valve of flowing through before this; Realized the hydraulic cylinder piston rod rising, thereby the heavy workpiece of also realizing oil hydraulic cylinder control rises accurately.
Further, this electromagnetic relief valve is that whole hydraulic system provides the pressure guarantee, and wherein whether this relief valve guiding oil stream of this second solenoid directional control valve control comes the completion system to need pressure oil stream or oily slime flux to flow back to fuel tank.
The description of drawings book
Fig. 1 is the structural principle schematic representation (piston rod of said oil hydraulic cylinder descends) of the utility model;
Fig. 2 is another structural principle schematic representation (piston rod of said oil hydraulic cylinder rises) of the utility model.
Contrast above accompanying drawing and make following supplementary notes:
1---relief valve 11---signaling control unit
2---second solenoid directional control valve 12---display device
3---check valve 100---oil hydraulic cylinder
4---proportion directional valve 101---rod chamber chamber inlet
5---equilibrium valve 102---rodless cavity chamber inlet
6---first solenoid directional control valve A---oil-way board oiler
7---one-way throttle valve B---oil-way board oiler
8---Pilot operated check valve P---hydraulic oil inlet
9---oil-way board T---fuel reserve tank
Embodiment:
In conjunction with Fig. 1 and Fig. 2, do to describe in detail as follows:
A kind of hydraulic lifting control gear; Comprise oil hydraulic cylinder 100, control the combination valve block that these oil hydraulic cylinder 100 piston rods go up and down; Comprise check valve 3, proportion directional valve 4, equilibrium valve 5, first solenoid directional control valve 6 and one-way throttle valve 7 between the rodless cavity chamber inlet 102 that is communicated with hydraulic oil inlet P and this oil hydraulic cylinder 100 successively; The Pilot operated check valve 8 that also comprises the rod chamber chamber inlet 101 that is communicated with this oil hydraulic cylinder 100, this Pilot operated check valve 8 are communicated with fuel reserve tank T through this proportion directional valve 4 again, and the guide port of this Pilot operated check valve 8 is communicated with this proportion directional valve 4; Said one-way throttle valve 7 is used for folk prescription to adjustment oil stream flow; Said equilibrium valve 5 is used for system back pressure to be set, and to fall damage under the heavy workpiece that prevents said oil hydraulic cylinder support, this first solenoid directional control valve 6 can adopt two-position two-way solenoid valve.
In order the pressure guarantee to be provided for whole hydraulic system; Also be connected to the electromagnetic relief valve of may command pressure oil stream between the inlet of this check valve 3 and this fuel reserve tank T; This electromagnetic relief valve is formed in parallel by a relief valve 1 and second solenoid directional control valve 2; Wherein 1 pair of whole hydraulic system pressure of this relief valve is set; Whether prevent overpressure damage motor pumping and oil cylinder, this second solenoid directional control valve 2 can adopt two-position four-way solenoid valve, be used to control relief valve 1 guiding oil stream and come the completion system to need pressure oil stream or oily slime flux to flow back to fuel tank.
Accurately rise or descend in order to control these oil hydraulic cylinder 100 upper piston rods; And easy-to-operat; Also be provided with a signaling control unit 11; Control the station of this first solenoid directional control valve 6 and second solenoid directional control valve 2 and the spool travel of controlling this proportion directional valve 4, this signaling control unit 11 is exported the Control Parameter of setting (shown in dotted line among Fig. 1 and Fig. 2) through display device 12 again simultaneously.
The P mouth of this proportion directional valve 4 links to each other with fuel reserve tank T with these check valve 3 outlets respectively with the T mouth; And the A mouth of this proportion directional valve links to each other with Pilot operated check valve 8 with equilibrium valve 5 respectively with the B mouth; Like this through controlling the spool travel variable quantity of this proportion directional valve 4; Can the pressure oil flow be adjusted to and meet that hydraulic cylinder piston rod descends or the required oily flow that rises, accurately rise or descend thereby reach the heavy workpiece that utilizes oil hydraulic cylinder control to support.
During practical application; This combination valve block is installed on (shown in the square frame in as depicted in figs. 1 and 2) on the oil-way board 9; This oil-way board 9 is installed on the upper beam of machine; Oiler A on the oil-way board 9 connects the rod chamber chamber inlet 101 of this oil hydraulic cylinder, and the oiler B on this oil-way board 9 connects the rodless cavity chamber inlet 102 of this oil hydraulic cylinder.
The working principle of the utility model is:
When oil hydraulic cylinder is carried out decline; As shown in Figure 1; The oil of hydraulic oil inlet arrives this proportion directional valve 4 (flow direction of hydraulic oil is like the direction of arrow among the figure) through this check valve 3; This proportion directional valve 4 meets the accurately required oily flow of decline of hydraulic cylinder piston rod with the adjustment of pressure oil flow, get into the rod chamber chamber inlet 101 of oil hydraulic cylinders 100 again through this Pilot operated check valve 8, and the oil of the rodless cavity chamber inlet 102 of oil hydraulic cylinder 100 has been got back to this fuel reserve tank T through this one-way throttle valve 7, first solenoid directional control valve 6 and equilibrium valve 5; The piston rod of having realized oil hydraulic cylinder descends, thereby the heavy workpiece of also realizing oil hydraulic cylinder control accurately descends.
When oil hydraulic cylinder is carried out rising; As shown in Figure 2; The oil of hydraulic oil inlet arrives this proportion directional valve 4 (flow direction of hydraulic oil is like the direction of arrow among the figure) through this check valve 3; This proportion directional valve 4 is adjusted to the pressure oil flow and meets the accurately required oily flow of rising of oil hydraulic cylinder; Get into the rodless cavity chamber inlet 102 of oil hydraulic cylinders 100 again through this equilibrium valve 5, first solenoid directional control valve 6, one-way throttle valve 7, and the oil of the rod chamber chamber inlet 101 of oil hydraulic cylinder 100 is got back among this fuel reserve tank T through this Pilot operated check valve 8, proportion directional valve 4, got into these Pilot operated check valve 8 guide ports and open it having an oil this proportion directional valve 4 of flowing through before this; Realized the hydraulic cylinder piston rod rising, thereby the heavy workpiece of also realizing oil hydraulic cylinder control rises accurately.
Claims (4)
1. hydraulic lifting control gear; Comprise oil hydraulic cylinder (100), control the combination valve block that this oil hydraulic cylinder (100) piston rod goes up and down; It is characterized in that; This combination valve block comprises check valve (3), proportion directional valve (4), equilibrium valve (5), first solenoid directional control valve (6) and the one-way throttle valve (7) between the rodless cavity chamber inlet (102) that is communicated with hydraulic oil inlet (P) and this oil hydraulic cylinder (100) successively; The Pilot operated check valve (8) that also comprises the rod chamber chamber inlet (101) that is communicated with this oil hydraulic cylinder (100), this Pilot operated check valve (8) are communicated with fuel reserve tank (T) through this proportion directional valve (4) again, and the guide port of this Pilot operated check valve (8) is communicated with this proportion directional valve (4).
2. a kind of hydraulic lifting control gear as claimed in claim 1; It is characterized in that; Also be connected to the electromagnetic relief valve of may command pressure oil stream between the inlet of this check valve (3) and this fuel reserve tank (T), this electromagnetic relief valve is formed in parallel by a relief valve (1) and second solenoid directional control valve (2).
3. a kind of hydraulic lifting control gear as claimed in claim 2; It is characterized in that; Also be provided with a signaling control unit (11); Control the station of this first solenoid directional control valve (6) and second solenoid directional control valve (2) and the spool travel of controlling this proportion directional valve (4), this signaling control unit (11) is exported the Control Parameter of setting through display device (12) again simultaneously.
4. a kind of hydraulic lifting control gear as claimed in claim 1; It is characterized in that; The P mouth of this proportion directional valve (4) links to each other with fuel reserve tank (T) with this check valve (3) outlet respectively with the T mouth, and the A mouth of this proportion directional valve links to each other with Pilot operated check valve (8) with this equilibrium valve (5) respectively with the B mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201378216U CN202520678U (en) | 2012-04-01 | 2012-04-01 | Hydraulic lifting control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201378216U CN202520678U (en) | 2012-04-01 | 2012-04-01 | Hydraulic lifting control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520678U true CN202520678U (en) | 2012-11-07 |
Family
ID=47103630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201378216U Withdrawn - After Issue CN202520678U (en) | 2012-04-01 | 2012-04-01 | Hydraulic lifting control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202520678U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362884A (en) * | 2012-04-01 | 2013-10-23 | 迪斯油压工业(昆山)有限公司 | Hydraulic lifting control device |
| CN103438044A (en) * | 2013-09-12 | 2013-12-11 | 上海三一重机有限公司 | Structure for reducing switching frequency of high speed and low speed and machinery vehicle |
-
2012
- 2012-04-01 CN CN2012201378216U patent/CN202520678U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362884A (en) * | 2012-04-01 | 2013-10-23 | 迪斯油压工业(昆山)有限公司 | Hydraulic lifting control device |
| CN103362884B (en) * | 2012-04-01 | 2016-03-30 | 迪斯油压工业(昆山)有限公司 | hydraulic lifting control device |
| CN103438044A (en) * | 2013-09-12 | 2013-12-11 | 上海三一重机有限公司 | Structure for reducing switching frequency of high speed and low speed and machinery vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121107 Effective date of abandoning: 20160330 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |