CN201786624U - Reversing impact buffer control circuit of concrete pump - Google Patents
Reversing impact buffer control circuit of concrete pump Download PDFInfo
- Publication number
- CN201786624U CN201786624U CN2010205292361U CN201020529236U CN201786624U CN 201786624 U CN201786624 U CN 201786624U CN 2010205292361 U CN2010205292361 U CN 2010205292361U CN 201020529236 U CN201020529236 U CN 201020529236U CN 201786624 U CN201786624 U CN 201786624U
- Authority
- CN
- China
- Prior art keywords
- siemens
- programmable logic
- logic controller
- relay
- storage battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model provides a reversing impact buffer control circuit of a concrete pump, which comprises a Siemens mini programmable logic controller with programs, wherein the terminals L+, 1L+ and 2L+ of the Siemens mini programmable logic controller are connected with the anode of a battery jar; the terminals M, 1M and 2M of the Siemens mini programmable logic controller are connected with the cathode of the battery jar; the output terminal Q0.7 of the Siemens mini programmable logic controller is connected with one end of a relay coil, and the other end of the relay coil is connected with the cathode of the battery jar; one end of the normally open contact of a relay is connected with the anode of the battery jar and the other end thereof is connected with a pumping system unloading solenoid valve, and the other end of the pumping system unloading solenoid valve is connected with the cathode of the battery jar; one end of the normally open contact of a pressure relay PS1 is connected with the anode of the battery jar and the other end thereof is connected with the input terminal I0.3 of the Siemens mini programmable logic controller; and one end of the normally open contact of a pressure relay PS2 is connected with the node of the battery jar and the other end thereof is connected with the input terminal I0.4 of the Siemens mini programmable logic controller. The utility model reduces instantaneous impact and vibration during reversing of the cylinder piston rod, improves the positioning accuracy of the piston head, and prolongs the service life of the hydraulic devices.
Description
Technical field
The utility model relates to the buffer control circuit of a kind of concrete pump or Vehicular concrete pump.
Background technique
Concrete pump or Vehicular concrete pump are in normal pumping process, because the pump oil cylinder piston rod is heavier, and movement velocity is very fast, so in the process of commutation suddenly, the inertia of piston rod is very big, can produce very big shock and vibration in the oil hydraulic circuit, and this impact and vibrations can influence the Location accuracy of piston head, shorten the life-span of hydraulic component, hinder the proper functioning of equipment.
Summary of the invention
The purpose of this utility model is exactly that a kind of concrete pump reversing impact buffer control circuit is provided in order to overcome the above problems, and eliminates and impacts, and reduces the harm to oil hydraulic circuit.
The technical solution of the utility model is achieved in that a kind of concrete pump reversing impact buffer control circuit, be characterized in: comprise with the model of program being Siemens's small-sized programmable logic controller of CPU224, its terminal L+, 1L+, 2L+ connects the storage battery positive pole, its terminal M, 1M, 2M connects the storage battery negative pole, its output terminal Q0.7 succeeds an end of electric apparatus coil, another termination storage battery negative pole of relay coil, relay normally open contact one termination storage battery positive pole, another termination pumping system off-load solenoid valve of relay normally open contact, another termination storage battery negative pole of pumping system off-load solenoid valve; The normally opened contact one termination storage battery positive pole of pressure relay PS1, the input end I0.3 of another termination Siemens small-sized programmable logic controller; The normally opened contact one termination storage battery positive pole of pressure relay PS2, the input end I0.4 of another termination Siemens small-sized programmable logic controller.
The utility model has solved concrete pump or Vehicular concrete pump in the pumping process, and unexpected reversing impact of oil cylinder piston bar and the excessive problem of vibrations have improved the Location accuracy of piston head, have prolonged the working life of hydraulic component.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is the installation schematic diagram of pressure relay.
Fig. 3 is the schematic diagram that throttle orifice b is installed in the control channel of pressure cartridge valve.
PLC among the figure---model is Siemens's programmable logic controller (PLC) of CPU224; B+---storage battery positive pole; B----storage battery negative pole; F---insurance; K---relay; PS1, PS2---pressure relay; DT---pumping system off-load solenoid valve; 1---master cylinder; 2---one-way valve; 3---pressure relay; 4---sentinel valve (logical valve); 5---orifice plug; 6---fuel tank; 7---main oil cylinder piston; 8---main oil pump; 9---the pressure cartridge valve; 10---orifice plug; 11---pumping system off-load solenoid valve DT; 12---relief valve; 13---fuel tank; 14---main system; First hydraulic fluid port of a---left signal valve; First hydraulic fluid port of b---right signal valve; C---orifice plug.
Embodiment
As shown in Figure 1, PLC is Siemens's small-sized programmable logic controller of CPU224 for the model with program, PLC terminal L+, 1L+, 2L+ meet the anodal B+ of storage battery, PLC terminal M, 1M, 2M meet storage battery negative pole B-, PLC output terminal Q0.7 succeeds an end of electrical equipment K coil, another termination storage battery negative pole of relay coil K B-, the anodal B+ of relay K normally opened contact one termination storage battery, another termination pumping system off-load solenoid valve of relay K normally opened contact DT, another termination storage battery negative pole of pumping system off-load solenoid valve DT B-; The anodal B+ of the normally opened contact one termination storage battery of pressure relay PS1, another termination PLC input end I0.3; The anodal B+ of the normally opened contact one termination storage battery of pressure relay PS2, another termination PLC input end I0.4.
Among Fig. 2, when a left side or right piston head 7 downwards towards the motion of master cylinder 1 bottom during through first hydraulic fluid port a of sentinel valves 4 or b, sentinel valve 4 is opened, high pressure oil enters pressure relay 3, make pressure relay PS1 or PS2 closure, this switching value signal enters PLC by PLC input end I0.3 or PLC input end I0.4,200 milliseconds of procedure auto-control PLC output terminal Q0.7 outages, be 200 milliseconds of relay K coil blackouts, 200 milliseconds of the solenoid valve of pumping system off-load just DT outages.
Among Fig. 3, in 200 milliseconds of this pumping system off-load solenoid valve DT outages, the c orifice plug of pressure cartridge valve 9 control oil in control channel, pumping system off-load solenoid valve DT are to fuel tank, the control oil pressure descends, lift on the spool, main system pressure descends rapidly, and piston rod movement speed descends rapidly, thereby reaches the purpose of reversing impact buffering.
The working principle of concrete pump or Vehicular concrete pump reversing impact buffer control circuit: as shown in Figure 2, when left oil cylinder piston head moves downward through first hydraulic fluid port of left signal valve a, the sentinel valve valve core is opened, high pressure oil enters the pressure relay PS1 on the left side, make pressure relay PS1 closure, this switching value signal enters PLC by PLC input end I0.3,200 milliseconds of procedure auto-control PLC output terminal Q0.7 outages, be 200 milliseconds of relay K coil blackouts, 200 milliseconds of the solenoid valve of pumping system off-load just DT outages.In these 200 milliseconds, main system pressure descends rapidly, and piston rod movement speed descends rapidly.Simultaneously, the output terminal of PLC control master cylinder commutation.So, commutating moment, reversing impact weakens.At this moment, right oil cylinder piston head moves downward, when first hydraulic fluid port of motion process right signal valve b, right signal valve valve core is opened, and high pressure oil enters the pressure relay PS2 on the right, makes pressure relay PS2 closure, this switching value signal enters PLC by PLC input end I0.4,200 milliseconds of procedure auto-control PLC output terminal Q0.7 outages, promptly the relay K coil blackout is 200 milliseconds, 200 milliseconds of the solenoid valve of pumping system off-load just DT outages.So same, commutate moment, reversing impact weakens.At this moment, the output terminal of PLC is controlled the master cylinder commutation once more, and left oil cylinder piston head moves downward once more, so moves in circles.
Claims (1)
1. concrete pump reversing impact buffer control circuit, it is characterized in that: comprise with the model of program being Siemens's small-sized programmable logic controller of CPU224, its terminal L+, 1L+, 2L+ connect the storage battery positive pole, its terminal M, 1M, 2M connect the storage battery negative pole, its output terminal Q0.7 succeeds an end of electric apparatus coil, another termination storage battery negative pole of relay coil, relay normally open contact one termination storage battery positive pole, another termination pumping system off-load solenoid valve of relay normally open contact, another termination storage battery negative pole of pumping system off-load solenoid valve; The normally opened contact one termination storage battery positive pole of pressure relay PS1, the input end I0.3 of another termination Siemens small-sized programmable logic controller; The normally opened contact one termination storage battery positive pole of pressure relay PS2, the input end I0.4 of another termination Siemens small-sized programmable logic controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205292361U CN201786624U (en) | 2010-09-09 | 2010-09-09 | Reversing impact buffer control circuit of concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205292361U CN201786624U (en) | 2010-09-09 | 2010-09-09 | Reversing impact buffer control circuit of concrete pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201786624U true CN201786624U (en) | 2011-04-06 |
Family
ID=43818589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205292361U Expired - Fee Related CN201786624U (en) | 2010-09-09 | 2010-09-09 | Reversing impact buffer control circuit of concrete pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201786624U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878044A (en) * | 2012-10-17 | 2013-01-16 | 飞翼股份有限公司 | Full hydraulic control mining concrete pump |
| CN110332103A (en) * | 2019-07-29 | 2019-10-15 | 浙江鸿友压缩机制造有限公司 | Electron pressure switch with time-delay closing unloading electromagnetic valve |
-
2010
- 2010-09-09 CN CN2010205292361U patent/CN201786624U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878044A (en) * | 2012-10-17 | 2013-01-16 | 飞翼股份有限公司 | Full hydraulic control mining concrete pump |
| CN110332103A (en) * | 2019-07-29 | 2019-10-15 | 浙江鸿友压缩机制造有限公司 | Electron pressure switch with time-delay closing unloading electromagnetic valve |
| CN110332103B (en) * | 2019-07-29 | 2024-05-10 | 浙江鸿友压缩机制造有限公司 | Electronic pressure switch with time-delay closing electromagnetic unloading valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104477798B (en) | Main arm variable amplitude control system of crane and crane | |
| CN201696386U (en) | Valve controller | |
| CN201344288Y (en) | Dual-electromagnet two-position four-way ball valve | |
| CN201786624U (en) | Reversing impact buffer control circuit of concrete pump | |
| CN203906970U (en) | Electromagnetic hydraulic regulating valve | |
| CN104154056A (en) | High-flow hydraulic reversing loop with interlocking function | |
| CN204961427U (en) | High -speed hydraulic pressure vibratory impulse device of heavy load | |
| CN108119419A (en) | A kind of electrohydraulic servo system of new type hydraulic turbine governor | |
| CN104165166A (en) | Compact-type telescopic oil cylinder changeover valve set | |
| CN203978967U (en) | A kind of high-volume hydraulic commutation loop with interlocking function | |
| CN204061361U (en) | Hydraulic system and Lightgage Steel Joist process equipment | |
| CN202048261U (en) | Electromagnetic valve logic control device | |
| CN203627367U (en) | Locking loop provided with electromagnetic directional valve | |
| CN202754726U (en) | Jacking hydraulic system of tower crane | |
| CN204003721U (en) | A kind of compact type telescopic oil cylinder switching valve group | |
| CN203627355U (en) | Double-speed-valve control system capable of achieving forced high speed or forced low speed | |
| CN102966784B (en) | Electromagnetic drive multistation valve | |
| CN202703372U (en) | Demountable tanker carrier and stall protective system thereof | |
| CN202812398U (en) | Control circuit for hydraulic electromagnetic valves of lifting skirt plates of bar cold bed | |
| CN201599268U (en) | High speed large flow pulse valve | |
| CN219450893U (en) | Hydraulic and electric device for controlling lifting of cab of excavator | |
| CN108843659A (en) | The booster-type fast braking stabilization control device and method of hydraulic cylinder actuators | |
| CN204878115U (en) | Hydraulic pressure headstock gear | |
| CN201521424U (en) | Control device for resolving concrete pumping discontinuity of boom pump trucks | |
| CN103343760A (en) | Switching valve of crane jib |
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: 20110406 Termination date: 20160909 |