CN104495265A - Carrier vehicle and carrier vehicle clamp control system - Google Patents
Carrier vehicle and carrier vehicle clamp control system Download PDFInfo
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- CN104495265A CN104495265A CN201410795910.3A CN201410795910A CN104495265A CN 104495265 A CN104495265 A CN 104495265A CN 201410795910 A CN201410795910 A CN 201410795910A CN 104495265 A CN104495265 A CN 104495265A
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- oil
- control system
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- valve
- clamp
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Abstract
The invention provides a carrier vehicle clamp control system comprising hydraulic cylinders, displacement sensors, balance valves, cut-off valves and proportional servo valves. Each hydraulic cylinder comprises a piston rod, a rod cavity and a rodless cavity, and a clamp are connected to the piston rods. The displacement sensors are arranged in the hydraulic cylinders. Each cut-off valve is communicated with an oil inflow pipeline through a first oil inlet and a second oil inlet of each proportional servo valve to form an oil inflow circuit; each cut-off valve is communicated with an oil return pipeline through a first oil return port and a second oil return port of each proportional servo valve to form an oil return circuit; each cut-off valve is communicated with the rodless cavity of each hydraulic cylinder through a first control port of each balance valve so as to form a first oil circuit; each cut-off valve is communicated with the rod cavity of each hydraulic cylinder through a second control port of each balance valve so as to form a second oil circuit. By the carrier vehicle clamp control system, the hydraulic cylinders reach the specified positions quickly and synchronously under control of the proportional servo valves, and the mechanical structure of a carrier vehicle is simplified.
Description
Technical field
The present invention relates to a kind of control system of transport trolley clamp, be specially a kind of hydraulic control system driving blank transport trolley clamp to be elevated.
Background technology
The radical function of clamp transport trolley is transport blank, steel pipe etc., realizes the transhipment of material.The structure of existing clamp transport trolley as shown in Figure 1, comprises, moving beam 10, roller 11, sleeve pipe 12, bearing 20, guide rail 21, clamp 30, guidepost 31 and motor (not shown).Be separately installed with two rollers 11 in the bottom at moving beam 10 two ends, roller 11 can drive moving beam 10 to move along guide rail 21.Article two, guide rail 21 is arranged on two bearings 20 respectively.Clamp 30 is positioned at the bottom of moving beam 10, and between two bearings 20, two guideposts 31 are arranged at the top at clamp 30 two ends respectively, and two sleeve pipes 12 being fixed on moving beam 10 are sheathed on two guideposts 31 respectively.During operation, motor drives clamp 30 to decline gripping blank, after driving clamp 30 rising to get back to original position again, moving beam 10 is driven to move to assigned address along bearing 20, again operate clamp 30 to decline, unclamp blank and be placed on assigned address, last operation clamp 30 rises to original position, completes the once carrying of blank.
In existing clamp transport trolley, the lifting of clamp drives lifting to complete by motor, and the running velocity of system is comparatively slow, causes transported high temperature blank temperature to decline very fast, makes the rolling temperature that can not meet technological requirement.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of control system of transport trolley clamp, comprise, hydraulic actuating cylinder, comprise piston rod, rod chamber and rodless cavity, described clamp is connected to described piston rod; Displacement pickup, is arranged at described hydraulic actuating cylinder; Balance cock, comprises the first control mouth and second and controls mouth; Shutoff valve; Proportional servo valve, comprises the first oil inlet, the second oil inlet, the first return opening, the second return opening; Wherein, described shutoff valve, by the first oil inlet, the second oil inlet connection inflow pipeline of described proportional servo valve, forms in-line; Described shutoff valve, by the first return opening, the second return opening connection oil returning tube of described proportional servo valve, forms oil return line; Described shutoff valve is communicated with the rodless cavity of described hydraulic actuating cylinder by the first control mouth of described balance cock, forms the first oil circuit; Described shutoff valve is communicated with the rod chamber of described hydraulic actuating cylinder by the second control mouth of described balance cock, forms the second oil circuit.
According to an embodiment of the present invention, wherein when fluid enters the rodless cavity of described hydraulic actuating cylinder along described in-line, the first oil circuit, fluid in described rod chamber flows into described oil returning tube along described second oil circuit, described oil return line, and described clamp declines with described piston rod; When fluid enters the rod chamber of described hydraulic actuating cylinder along described in-line, the second oil circuit, the fluid in described rodless cavity flows into described oil returning tube along described first oil circuit, described oil return line, and described clamp rises with described piston rod.
According to another embodiment of the present invention, wherein said balance cock also comprises the 3rd and controls mouth, and the described 3rd controls mouth is connected with described oil returning tube.
According to another embodiment of the present invention, wherein on described first oil circuit and described second oil circuit, be respectively arranged with pressure measuring tie-in.
According to another embodiment of the present invention, wherein said proportional servo valve is also connected with an oil circuit control, a draining road respectively.
According to another embodiment of the present invention, wherein said shutoff valve is also connected with described oil circuit control, described draining road respectively.
Present invention also offers a kind of transport trolley, comprise the control system described in two above-mentioned any one.
The control system of transport trolley clamp of the present invention, balance cock balanced load weight is adopted to improve the controllability of clamp descending speed, make whole system running steady, passing ratio servo valve control realizes hydraulic cylinder synchronous and arrives assigned address fast, simplifies the physical construction of transport trolley.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing clamp transport trolley;
Fig. 2 is the structural representation of the transport trolley of one embodiment of the invention.
Detailed description of the invention
The exemplary embodiments embodying feature & benefits of the present invention will describe in detail in the following description.Be understood that the present invention can have various changes in different embodiments, it neither departs from the scope of the present invention, and explanation wherein and to be shown in be use when explain in essence, and be not used to limit the present invention.
As shown in Figure 2, the transport trolley of one embodiment of the invention, comprises, bearing 20; Moving beam 10, is arranged on bearing 20; Clamp 30; Guidepost 31, is arranged at clamp 30; And for controlling two groups of clamp control system 40 that clamp 30 is elevated.
The clamp control system of an embodiment of the present invention comprises: hydraulic actuating cylinder 41, displacement pickup (not shown), balance cock 42, shutoff valve 43, and proportional servo valve 44.Wherein, hydraulic actuating cylinder 41 comprises rodless cavity 411, piston rod 412 and rod chamber 413.Displacement pickup is arranged at hydraulic actuating cylinder 41.The rod chamber 413 of hydraulic actuating cylinder 41 is connected with proportional servo valve 44 respectively by balance cock 42, shutoff valve 43 with rodless cavity 411, and proportional servo valve 44 is also connected with inflow pipeline 461, oil returning tube 462 respectively.Clamp 30 can be articulated with the end of piston rod 412.
The rodless cavity 411 of hydraulic actuating cylinder 41, by being communicated with the first port of shutoff valve 43, forms the first oil circuit 451 between.The rod chamber 413 of hydraulic actuating cylinder 41 is by being connected with the second port of shutoff valve 43, and form the second oil circuit 452 between, balance cock 42 can be arranged at the second oil circuit 452, and is connected to the first oil circuit 451 by controlling mouth K.3rd port of shutoff valve 43 is communicated in inflow pipeline 461 by hydraulic fluid port a, the hydraulic fluid port p of proportional servo valve 44, forms in-line 453.4th port of shutoff valve 43 is communicated in oil returning tube 462 by hydraulic fluid port b, the hydraulic fluid port t of proportional servo valve 44, forms oil return line 454.
Pressure measuring tie-in 47 can being set respectively on the first oil circuit 451, second oil circuit 452, for detecting the pressure in oil circuit, to adjust in time, avoiding the instability of control system.
For improving the control stiffness of system further, the control mouth X2 of the control mouth X1 of shutoff valve 43, proportional servo valve 44 can be connected with control pipeline 463, the control mouth Y2 of shutoff valve 43, the control mouth Y1 of proportional servo valve 44 are connected with draining pipeline 464.Because the oil pressure controlling pipeline 463 produces through reducing valve, pressure comparatively steadily and this pressure do not fluctuate with the fluctuation of pressure of system, such constant-pressure source ensure that the stationarity of the propelling thrust of the spool of servovalve improves the controller performance of servovalve, ensures that the mobile thrust of shutoff valve spool is not by the reliability affecting raising work of the open and close of servovalve simultaneously.
For ensureing the oil pressure of hydraulic actuating cylinder rod chamber 413 further, the outgate of the safety valve in balance cock 42 can be connected with oil returning tube 462.The hydraulic circuit caused due to fault power-off when hydraulic actuating cylinder 41 declines fast turns off instantaneously and causes hydraulic actuating cylinder rod chamber 413 to produce very high peak value with the hydraulic coupling in the pipeline be attached thereto, the safety valve of this pressure peak in balance cock 42 is released into safe pressure, the fluid discharged to oil returning tube 462, thus avoids the explosion of hydraulic tubing.
During operation, be energized to the shutoff valve 43 of two set control systems, be communicated with in-line 453 and the first oil circuit 451, proportional servo valve 44 possesses the condition starting to control, the spool action of proportional servo valve 44, fluid is arrived the rodless cavity 411 of hydraulic actuating cylinder 41 through in-line 453, first oil circuit 451 by inflow pipeline 461, promote piston rod 412 to move downward, make the fluid of hydraulic actuating cylinder rod chamber 413 flow into oil returning tube 462 through the second oil circuit 452, oil return line 454, clamp 30 moves down under the promotion of the piston rod 412 of two set control systems.The displacement pickup feedback signal of hydraulic actuating cylinder 41 arrives controller (not shown) and instruction signal and compares, until hydraulic actuating cylinder 41 arrives stop motion after given position, system adopts master-slave control method or aviation value control method to realize being synchronized with the movement of two hydraulic actuating cylinders 41.Wherein, controller can be installed on the moving beam 10 of transport trolley, the distance between itself and proportional servo valve 44 with less be good.
After arriving given position, clamp 30 gripping blank, be energized to the shutoff valve 43 of two set control systems, be communicated with in-line 453 and the second oil circuit 452, proportional servo valve 44 possesses the condition starting to control, the spool action of proportional servo valve 44, fluid by inflow pipeline 461 through in-line 453, second oil circuit 452 arrives the rod chamber 413 of hydraulic actuating cylinder 41, promote piston rod 412 upward movement, make the fluid of hydraulic actuating cylinder rodless cavity 411 through the first oil circuit 451, oil return line 454 flows into oil returning tube 462, clamp 30 moves up under the promotion of the piston rod 412 of two set control systems.The displacement pickup feedback signal of hydraulic actuating cylinder 41 arrives controller and instruction signal and compares, until hydraulic actuating cylinder 41 arrives stop motion after given position, after motor drives moving beam 10 to move to assigned address along bearing 20, again operate clamp 30 to decline, unclamp blank and be placed on assigned address, operation clamp 30 rises to original position, completes the once carrying of blank.
Wherein, the Main Function of proportional servo valve 44 is output displacements of hydraulic control cylinder 41; The Main Function of shutoff valve 43 cuts off and the oil inlet and oil return road being communicated with hydraulic actuating cylinder 41, and the present invention does not limit the specification of shutoff valve and structure, and the device that can realize above-mentioned functions all can be used as shutoff valve of the present invention; The balanced load that act as of balance cock 42 avoids the change due to load to cause the instability of control system.
Realizing the different displacement request of clamp 30 is the carry out bit in-migration realization that passing ratio servovalve 44 controls lifting hydraulic cylinder 41, because balance cock 42 has balanced the weight of clamp 30 and load, thus proportional servo valve 44 can complete the control of clamp 30 position and speed easily.
In the present invention, the clamp control system that transport trolley is installed is not limited to two groups, can according to the quantity of the weight selection control system of the size of clamp and institute's gripping blank.
The structure of control system of the present invention to acted on clamp and transport trolley is not limited to above description, and it also can be used for the lifting controlling other structure clamps.
Although with reference to exemplary embodiment describing the present invention, should be appreciated that term used illustrates and exemplary and nonrestrictive term.Spirit or the essence of invention is not departed from because the present invention can specifically implement in a variety of forms, so be to be understood that, above-mentioned embodiment is not limited to any aforesaid details, and explain widely in the spirit and scope that should limit in claim of enclosing, therefore fall into whole change in claim or its equivalent scope and remodeling and all should be claim of enclosing and contained.
Claims (7)
1. a control system for transport trolley clamp, comprises,
Hydraulic actuating cylinder, comprises piston rod, rod chamber and rodless cavity, and described clamp is connected to described piston rod;
Displacement pickup, is arranged at described hydraulic actuating cylinder;
Balance cock, comprises the first control mouth and second and controls mouth;
Shutoff valve;
Proportional servo valve, comprises the first oil inlet, the second oil inlet, the first return opening, the second return opening;
Wherein, described shutoff valve, by the first oil inlet, the second oil inlet connection inflow pipeline of described proportional servo valve, forms in-line; Described shutoff valve, by the first return opening, the second return opening connection oil returning tube of described proportional servo valve, forms oil return line; Described shutoff valve is communicated with the rodless cavity of described hydraulic actuating cylinder by the first control mouth of described balance cock, forms the first oil circuit; Described shutoff valve is communicated with the rod chamber of described hydraulic actuating cylinder by the second control mouth of described balance cock, forms the second oil circuit.
2. control system according to claim 1, wherein when fluid enters the rodless cavity of described hydraulic actuating cylinder along described in-line, the first oil circuit, fluid in described rod chamber flows into described oil returning tube along described second oil circuit, described oil return line, and described clamp declines with described piston rod; When fluid enters the rod chamber of described hydraulic actuating cylinder along described in-line, the second oil circuit, the fluid in described rodless cavity flows into described oil returning tube along described first oil circuit, described oil return line, and described clamp rises with described piston rod.
3. control system according to claim 1, wherein said balance cock also comprises the 3rd and controls mouth, and the described 3rd controls mouth is connected with described oil returning tube.
4. control system according to claim 1, is wherein respectively arranged with pressure measuring tie-in on described first oil circuit and described second oil circuit.
5. control system according to claim 1, wherein said proportional servo valve is also connected with an oil circuit control, a draining road respectively.
6. control system according to claim 5, wherein said shutoff valve is also connected with described oil circuit control, described draining road respectively.
7. a transport trolley, comprises the control system according to any one of two claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410795910.3A CN104495265A (en) | 2014-12-19 | 2014-12-19 | Carrier vehicle and carrier vehicle clamp control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410795910.3A CN104495265A (en) | 2014-12-19 | 2014-12-19 | Carrier vehicle and carrier vehicle clamp control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104495265A true CN104495265A (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410795910.3A Pending CN104495265A (en) | 2014-12-19 | 2014-12-19 | Carrier vehicle and carrier vehicle clamp control system |
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| CN (1) | CN104495265A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3171331A (en) * | 1963-01-02 | 1965-03-02 | Centec Machine Tools Ltd | Control apparatus |
| CN2175748Y (en) * | 1993-07-30 | 1994-08-31 | 内蒙古自治区包头矿务局 | Rear tipping type full car loading and unloading machine for non automatic loading and unloading lorry |
| CN1894503A (en) * | 2003-12-15 | 2007-01-10 | 贝尔直升机泰克斯特龙公司 | Two-stage pressure relief valve |
| CN201971593U (en) * | 2011-01-04 | 2011-09-14 | 湖北省输变电工程公司 | Hydraulic jacking system for large power equipment |
| CN102728626A (en) * | 2012-06-14 | 2012-10-17 | 太原重工股份有限公司 | Horizontal moving device for capillary pipe and pilger mill set having same device |
| US20130247750A1 (en) * | 2012-03-20 | 2013-09-26 | Parker-Hannifin Corporation | Electro-hydraulic pilot operated relief valve |
| CN103625856A (en) * | 2013-12-20 | 2014-03-12 | 太原重工股份有限公司 | Device used for automatically carrying aluminum section bars |
-
2014
- 2014-12-19 CN CN201410795910.3A patent/CN104495265A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3171331A (en) * | 1963-01-02 | 1965-03-02 | Centec Machine Tools Ltd | Control apparatus |
| CN2175748Y (en) * | 1993-07-30 | 1994-08-31 | 内蒙古自治区包头矿务局 | Rear tipping type full car loading and unloading machine for non automatic loading and unloading lorry |
| CN1894503A (en) * | 2003-12-15 | 2007-01-10 | 贝尔直升机泰克斯特龙公司 | Two-stage pressure relief valve |
| CN201971593U (en) * | 2011-01-04 | 2011-09-14 | 湖北省输变电工程公司 | Hydraulic jacking system for large power equipment |
| US20130247750A1 (en) * | 2012-03-20 | 2013-09-26 | Parker-Hannifin Corporation | Electro-hydraulic pilot operated relief valve |
| CN102728626A (en) * | 2012-06-14 | 2012-10-17 | 太原重工股份有限公司 | Horizontal moving device for capillary pipe and pilger mill set having same device |
| CN103625856A (en) * | 2013-12-20 | 2014-03-12 | 太原重工股份有限公司 | Device used for automatically carrying aluminum section bars |
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Application publication date: 20150408 |