CN201155452Y - Concrete delivery pump high and low-voltage automatic switching device - Google Patents
Concrete delivery pump high and low-voltage automatic switching device Download PDFInfo
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- CN201155452Y CN201155452Y CNU200820016838XU CN200820016838U CN201155452Y CN 201155452 Y CN201155452 Y CN 201155452Y CN U200820016838X U CNU200820016838X U CN U200820016838XU CN 200820016838 U CN200820016838 U CN 200820016838U CN 201155452 Y CN201155452 Y CN 201155452Y
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Abstract
The utility model relates to a concrete conveying pump high-pressure and low-pressure automatic switcher, in particular relates to a switcher that can automatically transform the high pressure and the lower pressure of the concrete conveying pump during the pipe is blocked on site, which comprises a main control oil circuit, an auxiliary control oil circuit and a main oil cylinder, and also comprises two pressure relays that are arranged inside the main control oil circuit, two reversing valves that are arranged between the main control oil circuit and the main oil cylinder and an electromagnetic reversing valve with an oil inlet being connected with the auxiliary control oil circuit. The oil inlet of the two reversing valves is connected with the main control oil circuit, and one of the two reversing valves is connected with a main oil cylinder with a chamber, and the other reversing valve is connected with a main oil cylinder without a chamber. The control oil port of the reversing valve is respectively connected with the two oil ports of the electromagnetic reversing valve. The concrete conveying pump high-pressure and low-pressure automatic switcher can realize the automatic switching between the high pressure and the lower pressure of the concrete conveying pump.
Description
(1) technical field
The utility model relates to a kind of concrete pump high low pressure automatic switchover device, particularly is applicable to when plugging appears in work on the spot, can change the switch of concrete pump high low pressure automatically.
(2) background technique
Along with the quickening of China's economic construction speed, Infrastructure such as highway, and tall building construction speed is also increasing, these facilities all need a large amount of concrete, so just bring concrete to pass through the far away or high problem of line transportation.Under the normal condition, concrete is formed centrally columnar fluid in pumping pipe, forms suspension and flows.In the pumping process, can form one deck cement slurry in concrete column flow surface, this cement slurry layer makes the concrete can smooth delivery of power as a kind of oiling agent, can not produce relative movement basically between the aggregate.Some aggregate motion in aggregate is obstructed, and the aggregate speed of back is slowed down gradually because of influenced, and supports that the cement slurry of aggregate is squeezed away, and promptly the cement slurry lubricating layer is damaged, and final result is that aggregate amasss knot and forms plugging.
For the processing of plugging, a kind of is to clear up by manually opening pipeline at present, and this mode wastes time and energy.Another kind of mode is to allow the concrete pump replace positive and negative pump action repeatedly, and the mode of cement injection is dredged in pipeline simultaneously, and this mode is more time-consuming, and S valve, oil cylinder piston bear enormous pressure and bump because of commutating rapidly, can influence the working life of concrete pump.
In the actual pumping process, often consider pumping distance and height, usually adopt big discharge capacity of low pressure and height to force down the discharge capacity dual mode concrete is carried out pumping.There is the mode of switching by the transfer pump high low pressure to solve the scheme of plugging problem at present: to realize that by the high low pressure switching valve high low pressure switches, use the conveying capacity of high positive pressure pump to get rid of plugging, perhaps, concrete is sucked back hopper by the anti-pump of high pressure.The employed high low pressure switching valve of this scheme has two square valve bodies, two master cylinder afterbodys about being installed in respectively.Because two master cylinder length and highly not quite identical, for remedying this problem, high and low pressure valve piece is complex structure in design, processes, installs difficulty and oil leakage phenomenon often occurs.Be equipped with 9 machining holes on each valve body respectively, the connecting plate that has 6 machining holes with a rectangular couples together two valve bodies, and its oil circuit is switched back and forth.Other has two cover plates that have four machining holes to be contained in respectively on the high low pressure valve body, and the path that changes hydraulic oil by two cover plates of rotation realizes that high low pressure switches.Because the valve body machining hole is too much, make that the hydraulic oil circulation resistance is big, the hydraulic oil temperature rise is too fast, and the hydraulic oil aging speed is fast, and high low pressure need be two cover plates half-twists simultaneously, this process need assembling-disassembling bolt when switching.Doing one like this is can some hydraulic oil of loss, also pollutes the environment, and dismounting simultaneously often also can make bolt fastener and Sealing premature damage.Because needing the people is dismounting, length consuming time can not in time switch to high pressure when the plugging phenomenon occurring, limited the service behaviour of concrete pump to a certain extent, influences the duration.
(3) summary of the invention
At the above-mentioned deficiency of prior art, the utility model provides a kind of concrete pump high low pressure automatic switchover device.
The utility model is by the following technical solutions:
The utility model concrete pump high low pressure automatic switchover device comprises main control oil circuit, auxilliary control oil channel and master cylinder.Also comprise two pressure relayes being arranged in the described main control oil circuit, be arranged on two selector valves between main control oil circuit and the described master cylinder and filler opening and be connected on solenoid directional control valve on the described auxilliary control oil channel that wherein the pressure relay output line connects electrical control PLC input terminal.Above-mentioned two selector valve filler openings connect the main control oil circuit, and one of them selector valve connects the master cylinder rod chamber, and another selector valve connects the master cylinder rodless cavity.Selector valve control port connects two hydraulic fluid ports of solenoid directional control valve respectively.
The utility model concrete pump high low pressure automatic switchover device, its main control oil circuit is provided with two pressure relayes, be used to gather the oil pressure real time information of main control oil circuit, when the information that collects shows that hydraulic fluid pressure is big, illustrate in the low positive pressure pump process plugging or overpressure phenomenon to occur.This is PLC control electromagnetic valve DT1, DT2, DT3 and electromagnetic switch valve events, realizes the positive pump work of system high pressure.After PLC sets high positive pressure pump work a period of time, be converted into low positive pressure pump work automatically, this process is by high positive pressure pump dredging pipeline.Show plugging or overpressure if PLC gathers signal, PLC sets the concrete pump and keeps high positive pressure pump work state.When high positive pressure pump work overpressure, another pressure relay signals to PLC, by 3,4,6 actions of PLC control electromagnetic valve, realizes the anti-pump work of concrete pump, and this action can be the concrete back suction back hopper of delivery pipe that pipeline is dredged.Thereby when realizing that stifled pump or overpressure appear in the concrete pump, automatic switchover high low pressure transport model.Can when high positive pressure pumping pressure is too high, realize the anti-pump work of concrete pump in addition.
(4) description of drawings
Fig. 1 is that the utility model concrete pump high low pressure automatic switchover device hydraulic part is used schematic representation.
Fig. 2 is the utility model concrete pump high low pressure automatic switchover device A-A enlarged view (hydraulic part schematic diagram).
Fig. 3 is provided with the pressure relay schematic representation in the utility model concrete pump high low pressure automatic switchover device main control oil circuit.
Fig. 4-5 is the utility model concrete pump high low pressure automatic switchover device electrical schematic diagram.
Fig. 6 is that this original concrete pump high low pressure switches the hydraulic control system schematic diagram.
Among the figure, 1, master cylinder, 2, auxilliary control oil channel, 3-6, solenoid valve, 7, the main control oil circuit, 8-9, solenoid valve, 10, solenoid directional control valve, 11-12, selector valve, 13-14, pressure relay.
(5) embodiment
Embodiment 1:
With reference to Figure of description 1-6, the utility model concrete pump high low pressure automatic switchover device, comprise main control oil circuit 7, auxilliary control oil channel 2 and master cylinder 1, also comprise the pressure relay 13,14 that is arranged in the described main control oil circuit 7, pressure relay is used to gather the real time information of main control oil circuit pressure, passes to electric control system PLC then.For the high low pressure of realizing pumping automaticallyes switch, in that being set between main control oil circuit and the described master cylinder 1, selector valve 11,12 and filler opening be connected on solenoid directional control valve 10 on the described auxilliary control oil channel 2, selector valve 11,12 filler openings connect the main control oil circuit, selector valve 11 connects master cylinder 1 rod chamber, and selector valve 12 connects the master cylinder rodless cavity.Selector valve 11,12 control ports connect two hydraulic fluid ports of solenoid directional control valve 10 respectively.Solenoid directional control valve 10 is controlled by electrical control, then with control action in selector valve 11,12, these two selector valves act on master cylinder, realize that the high low pressure of pumping automaticallyes switch.
The utility model concrete pump high low pressure automatic switchover device plugging or overpressure phenomenon occur in low positive pressure pump work process, pressure relay 13 signals to PLC, by 10 actions of PLC control solenoid directional control valve, the positive pump work of system high pressure.After high positive pressure pump work is normal, according to set time, be converted into low positive pressure pump work automatically, set time is determined according to the pumping height and distance, is generally and expects when reaching transfer position to be set point.If pressure relay 13 still signallings this moment, the concrete pump can fix at high positive pressure pump work state, when high positive pressure pump work overpressure, pressure relay 14 signals to PLC, by 3,4,6 actions of PLC control electromagnetic valve, realize the anti-pump work of concrete pump, this action can be dredged pipeline.Anti-pump can be set up-time as required, is converted into high positive pressure pump work then automatically, and proper functioning is converted into low positive pressure pump work state after a period of time.Can not work or high positive pressure pump can not work the time when anti-pump, pressure relay 14 continues to signal, and sets the pump operated mode of concrete and is converted to manually and stops pumping, sends alarm signal prompting personnel and gets involved.
Claims (1)
1. concrete pump high low pressure automatic switchover device, comprise that main control oil circuit (7), auxilliary control oil channel (2) and master cylinder (1) is characterized in that: comprise also being arranged on the interior pressure relay (13,14) of described main control oil circuit (7), being arranged on selector valve (11,12) between main control oil circuit and the described master cylinder (1) and filler opening and being connected on solenoid directional control valve (10) on the described auxilliary control oil channel (2) that wherein pressure relay (13,14) output line connects electrical control PLC input terminal; Selector valve (11,12) filler opening connects the main control oil circuit, and selector valve (11) connects master cylinder (1) rod chamber, and selector valve (12) connects the master cylinder rodless cavity; Selector valve (11,12) control port connects two hydraulic fluid ports of solenoid directional control valve (10) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820016838XU CN201155452Y (en) | 2008-01-22 | 2008-01-22 | Concrete delivery pump high and low-voltage automatic switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820016838XU CN201155452Y (en) | 2008-01-22 | 2008-01-22 | Concrete delivery pump high and low-voltage automatic switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201155452Y true CN201155452Y (en) | 2008-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820016838XU Expired - Fee Related CN201155452Y (en) | 2008-01-22 | 2008-01-22 | Concrete delivery pump high and low-voltage automatic switching device |
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| CN (1) | CN201155452Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330665A (en) * | 2011-07-27 | 2012-01-25 | 长沙中联重工科技发展股份有限公司 | Concrete pumping equipment and control method and device thereof |
| WO2013013403A1 (en) * | 2011-07-27 | 2013-01-31 | 长沙中联重工科技发展股份有限公司 | Concrete pumping device and control method and device thereof |
| CN103615418A (en) * | 2013-11-29 | 2014-03-05 | 三一汽车制造有限公司 | Pumping hydraulic system and concrete pumping equipment |
| CN105351279A (en) * | 2015-11-13 | 2016-02-24 | 北汽福田汽车股份有限公司 | Pumping device and pumping hydraulic system thereof |
| CN111140485A (en) * | 2019-12-26 | 2020-05-12 | 深圳班翟机器人有限公司 | Control method and control device for preventing mortar delivery pump from being blocked, mortar pumping equipment and computer-readable storage medium |
-
2008
- 2008-01-22 CN CNU200820016838XU patent/CN201155452Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330665A (en) * | 2011-07-27 | 2012-01-25 | 长沙中联重工科技发展股份有限公司 | Concrete pumping equipment and control method and device thereof |
| WO2013013403A1 (en) * | 2011-07-27 | 2013-01-31 | 长沙中联重工科技发展股份有限公司 | Concrete pumping device and control method and device thereof |
| CN102330665B (en) * | 2011-07-27 | 2013-08-14 | 中联重科股份有限公司 | Concrete pumping equipment and control method and device thereof |
| CN103615418A (en) * | 2013-11-29 | 2014-03-05 | 三一汽车制造有限公司 | Pumping hydraulic system and concrete pumping equipment |
| CN103615418B (en) * | 2013-11-29 | 2016-05-11 | 三一汽车制造有限公司 | Hydraulic system of pump and concrete pumping equipment |
| CN105351279A (en) * | 2015-11-13 | 2016-02-24 | 北汽福田汽车股份有限公司 | Pumping device and pumping hydraulic system thereof |
| CN105351279B (en) * | 2015-11-13 | 2017-09-15 | 北汽福田汽车股份有限公司 | Pumping equipment and its hydraulic system of pump |
| CN111140485A (en) * | 2019-12-26 | 2020-05-12 | 深圳班翟机器人有限公司 | Control method and control device for preventing mortar delivery pump from being blocked, mortar pumping equipment and computer-readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081126 Termination date: 20110122 |