CN203412828U - Hydraulic control system for stepped cooling bed - Google Patents
Hydraulic control system for stepped cooling bed Download PDFInfo
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- CN203412828U CN203412828U CN201320336957.4U CN201320336957U CN203412828U CN 203412828 U CN203412828 U CN 203412828U CN 201320336957 U CN201320336957 U CN 201320336957U CN 203412828 U CN203412828 U CN 203412828U
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- valve
- selector valve
- control system
- cooling bed
- oil cylinder
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Abstract
The utility model relates to a hydraulic control system for a stepped cooling bed. The hydraulic control system comprises an oil cylinder, a first reversing valve and a second reversing valve; a first oil outlet of the first reversing valve is serially connected with a first check throttling valve and a balance valve in sequence; the balance valve is communicated with the lower cavity body of the oil cylinder; a second oil outlet of the first reversing valve is connected with a second check throttling valve connected with a first speed regulation valve and a second speed regulation valve; the first speed regulation valve and the second speed regulation valve are respectively connected with a pressure oil port and an oil returning port of the second reversing valve; the oil outlet of the second reversing valve is communicated with the upper cavity body of the oil cylinder. The hydraulic control system for the stepped cooling bed has the beneficial effects that the original electro-hydraulic proportional reversing valve is replaced by matching the common electro-hydraulic reversing valves and the speed regulation valves for use, so the product cost is greatly reduced, and the stepped cooling bed is stable in operation speed and convenient to control.
Description
Technical field
The utility model relates to a kind of step cooling bed hydraulic control system.
Background technique
Cold bed is that metallurgical Steel-rolling Industry effectively carries out cooling table top to rolled products.Since walking beam cooler is used as cold bed of new generation, because the advantages such as it operates steadily are widely applied.The design of lifting and translation control system is the most important thing of walking beam cooler, and for the hydraulic control of walking beam cooler lifting and translation, at present basic adoption rate control system is controlled, its motion steadily, be not subject to the impact of load variations, but its cost is higher, is unfavorable for promoting.
Model utility content
The purpose of this utility model is to provide a kind of step cooling bed hydraulic control system, to solve the existing usage ratio system of the existing control system high problem of controlling cost.
The purpose of this utility model is to be achieved through the following technical solutions:
A hydraulic control system, comprises oil cylinder, the first selector valve and the second selector valve, and the first oil outlet of described the first selector valve is in series with the first one-way throttle valve and equilibrium valve successively, and equilibrium valve is communicated with the lower chamber of described oil cylinder; The second oil outlet of described the first selector valve is connected with the second one-way throttle valve, the second one-way throttle valve is connected with the first series flow control valve and the second series flow control valve, the first series flow control valve is connected with return opening with the pressure hydraulic fluid port of described the second selector valve respectively with the second series flow control valve, and the oil outlet of the second selector valve is communicated with the upper cavity of described oil cylinder.
Further, the oil circuit between the upper and lower cavity of the return opening of described the first selector valve and described oil cylinder is also parallel with respectively one-way valve and safety valve.
Further, between the lower chamber of described oil cylinder and described equilibrium valve and between the upper cavity of described oil cylinder and described the second selector valve, be all in series with stop valve and pressure measuring tie-in.
Further, the control end of described the second selector valve is connected with the pressure hydraulic fluid port of described the first selector valve, and the pressure hydraulic fluid port of the second selector valve is connected with the second series flow control valve with described the first series flow control valve respectively with return opening.
Further, described the first selector valve is all connected with drain tap with the second selector valve.
Further, the oil circuit between described the second selector valve and described cylinder upper cavity oil body is communicated with the control port of described equilibrium valve.
Preferably, described the first selector valve and the second selector valve are electro-hydraulic reversing valve.
Preferably, described safety valve is relief valve.
The beneficial effects of the utility model are: the utility model is by being used in conjunction with common electro-hydraulic reversing valve and series flow control valve, substituted former electro-hydraulic proportion reversing valve, utilize electrical control that control time curve is set, reach the requirement of proportional valve control curve, thereby greatly reduce product cost, and can make the motion of cold bed lift beam steadily reliable, reduce to impact, adopt and combine at a slow speed soon control structure simultaneously, realize the friction speed of cold bed lifting and control.
Accompanying drawing explanation
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the schematic diagram of step cooling bed hydraulic control system described in the utility model embodiment.
In figure:
1, the first selector valve; 2, the second selector valve; 3, oil cylinder; 4, the first one-way throttle valve; 5, the second one-way throttle valve; 6, the first series flow control valve; 7, the second series flow control valve; 8, equilibrium valve; 9, one-way valve; 10, safety valve; 11, stop valve; 12, pressure measuring tie-in.
Embodiment
As shown in Figure 1, step cooling bed hydraulic control system described in the utility model embodiment, comprise oil cylinder 3, the first selector valve 1 and the second selector valve 2, the first oil outlet of described the first selector valve 1 is in series with the first one-way throttle valve 4 and equilibrium valve 8 successively, and equilibrium valve 8 is communicated with the lower chamber of described oil cylinder 3; The second oil outlet of described the first selector valve 1 is connected with the second one-way throttle valve 5, the second one-way throttle valve 5 is connected with the first series flow control valve 6 and the second series flow control valve 7, the first series flow control valve 6 is connected with return opening with the pressure hydraulic fluid port of described the second selector valve 2 respectively with the second series flow control valve 7, and the oil outlet of the second selector valve 2 is communicated with the upper cavity of described oil cylinder 3; Oil circuit between the return opening of described the first selector valve 1 and the upper and lower cavity of described oil cylinder 3 is also parallel with respectively one-way valve 9 and safety valve 10; Between the lower chamber of described oil cylinder 3 and described equilibrium valve 8, be all in series with stop valve 11 and pressure measuring tie-in 12 between the upper cavity of described oil cylinder 3 and described the second selector valve 2; The control end of described the second selector valve 2 is connected with the pressure hydraulic fluid port of described the first selector valve 1, and the pressure hydraulic fluid port of the second selector valve 2 is connected with the second series flow control valve 7 with described the first series flow control valve 6 respectively with return opening; Described the first selector valve 1 is all connected with drain tap with the second selector valve 2; Oil circuit between described the second selector valve 2 and described oil cylinder 3 upper cavities is communicated with the control port of described equilibrium valve 8; Described the first selector valve 1 and the second selector valve 2 are electro-hydraulic reversing valve; Described safety valve 10 is relief valve.
During concrete use, the first selector valve 1 is for controlling the moving direction of cold bed lifting hydraulic cylinder; First, second series flow control valve 6 and 7 is for regulating the fast jogging speed of cold bed lifting hydraulic cylinder lifting, the second selector valve 2 is for the fast switching at a slow speed of oil cylinder, when just having risen, uses at a slow speed cold bed lift beam, after certain hour, switch to fast, when lift beam approaches semifinished product, again switch at a slow speed, prevent that the impact producing after semifinished product and cold bed carry-over bar Fast Collision from damaging equipment.First, second series flow control valve 6 and 7 also can make cold bed movement velocity steady, is not subject to the impact of load variations; Equilibrium valve 8 is controlled cold bed lifting hydraulic cylinder and is steadily declined, reduces impact, and can be locked at a high position; 10 pairs of cold bed liftings of safety valve shield, and prevent superpressure; First, second one- way throttle valve 4 and 5 provides back pressure while retracting for oil cylinder lever; One-way valve 9 is for the repairing of lifting jar epicoele.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but do any variation in its shape or structure; every have identical with a application or akin technological scheme, within all dropping on protection domain of the present utility model.
Claims (8)
1. a step cooling bed hydraulic control system, comprise oil cylinder (3), the first selector valve (1) and the second selector valve (2), it is characterized in that: the first oil outlet of described the first selector valve (1) is in series with the first one-way throttle valve (4) and equilibrium valve (8) successively, equilibrium valve (8) is communicated with the lower chamber of described oil cylinder (3); The second oil outlet of described the first selector valve (1) is connected with the second one-way throttle valve (5), the second one-way throttle valve (5) is connected with the first series flow control valve (6) and the second series flow control valve (7), the first series flow control valve (6) is connected with return opening with the pressure hydraulic fluid port of described the second selector valve (2) respectively with the second series flow control valve (7), and the oil outlet of the second selector valve (2) is communicated with the upper cavity of described oil cylinder (3).
2. step cooling bed hydraulic control system according to claim 1, is characterized in that: the oil circuit between the return opening of described the first selector valve (1) and the upper and lower cavity of described oil cylinder (3) is also parallel with respectively one-way valve (9) and safety valve (10).
3. step cooling bed hydraulic control system according to claim 2, is characterized in that: between the lower chamber of described oil cylinder (3) and described equilibrium valve (8) and between the upper cavity of described oil cylinder (3) and described the second selector valve (2), be all in series with stop valve (11) and pressure measuring tie-in (12).
4. step cooling bed hydraulic control system according to claim 3, it is characterized in that: the control end of described the second selector valve (2) is connected with the pressure hydraulic fluid port of described the first selector valve (1), the pressure hydraulic fluid port of the second selector valve (2) is connected with the second series flow control valve (7) with described the first series flow control valve (6) respectively with return opening.
5. step cooling bed hydraulic control system according to claim 4, is characterized in that: the drain tap of described the second selector valve (2) is connected with total drain tap, and the drain tap of described the first selector valve (1) is connected with described total drain tap.
6. step cooling bed hydraulic control system according to claim 5, is characterized in that: the oil circuit between described the second selector valve (2) and described oil cylinder (3) upper cavity is communicated with the control port of described equilibrium valve (8).
7. step cooling bed hydraulic control system according to claim 6, is characterized in that: described the first selector valve (1) and the second selector valve (2) are electro-hydraulic reversing valve.
8. step cooling bed hydraulic control system according to claim 7, is characterized in that: described safety valve (10) is relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320336957.4U CN203412828U (en) | 2013-06-13 | 2013-06-13 | Hydraulic control system for stepped cooling bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320336957.4U CN203412828U (en) | 2013-06-13 | 2013-06-13 | Hydraulic control system for stepped cooling bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203412828U true CN203412828U (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320336957.4U Expired - Fee Related CN203412828U (en) | 2013-06-13 | 2013-06-13 | Hydraulic control system for stepped cooling bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203412828U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140558A (en) * | 2020-01-29 | 2020-05-12 | 中冶重工（唐山）有限公司 | Hydraulic system of heat treatment manipulator and control method thereof |
-
2013
- 2013-06-13 CN CN201320336957.4U patent/CN203412828U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140558A (en) * | 2020-01-29 | 2020-05-12 | 中冶重工（唐山）有限公司 | Hydraulic system of heat treatment manipulator and control method thereof |
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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 |
Granted publication date: 20140129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |