CN204941806U - Concrete pump distribution system - Google Patents
Concrete pump distribution system Download PDFInfo
- Publication number
- CN204941806U CN204941806U CN201520526815.3U CN201520526815U CN204941806U CN 204941806 U CN204941806 U CN 204941806U CN 201520526815 U CN201520526815 U CN 201520526815U CN 204941806 U CN204941806 U CN 204941806U
- Authority
- CN
- China
- Prior art keywords
- main contactor
- series connection
- coil
- relief valve
- electromagnetic relief
- 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.)
- Active
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The utility model relates to mixed earth field, provides a kind of concrete pump distribution system, and simplify system operation procedures, realizing electric motor starting is no-load starting, automatic deloading after system cut-off.It comprises hydraulic unloading device, for electric motor starting main contactor, for main contactor start start button, for system stop stop button; Described hydraulic unloading device is electromagnetic relief valve, and described main contactor comprises the moving together contact of coil, auxiliary contact, timing closing; The coil of electromagnetic relief valve is connected with the moving together contact of main contactor timing closing, composition series connection road one; The coil of main contactor is connected with described start button, composition series connection road two; Described start button is also in parallel with the auxiliary contact of main contactor; Described series connection Lu Yiyu series connection road two is in parallel, and described series connection Lu Yiyu connects, the end points in parallel on road two is connected with described stop button.The utility model is applicable to concrete production.
Description
Technical field
The utility model relates to concrete field, particularly concrete pump distribution system.
Background technique
In existing concrete pump distribution system, distribution system two oil cylinder replaces, clearance type work, and the most of the time is by accumulator accumulation of energy.When manually opening ball valve before electric motor starting or throttle valve opening realizes starting without load; Load to realize hydraulic system when manually closing ball valve or throttle valve opening after electric motor starting; When the apparatus is shut, ball valve or throttle valve opening is manually opened to realize hydraulic system off-load.And connect ball valve also need pipeline or increase valve block inner passage, corresponding increase fault point and cost.
Because job site operator's technical ability varies, various carelessness is always had in operator's using process, motor belt motor is caused to carry startup, or manual off-load forgotten by accumulator after motor and equipment stop, and there is very high pressure in systems in which, potential safety hazard can be produced, even threat to life property safety.
Model utility content
The technical problems to be solved in the utility model is: provide a kind of concrete pump distribution system, and simplify system operation procedures, realizing electric motor starting is no-load starting, automatic deloading after system cut-off.
For solving the problem, the technical solution adopted in the utility model is: concrete pump distribution system, comprise hydraulic unloading device, for electric motor starting main contactor, for main contactor start start button, for system stop stop button; Described hydraulic unloading device is electromagnetic relief valve, and described main contactor comprises the moving together contact of coil, auxiliary contact, timing closing; The coil of electromagnetic relief valve is connected with the moving together contact of main contactor timing closing, composition series connection road one; The coil of main contactor is connected with described start button, composition series connection road two; Described start button is also in parallel with the auxiliary contact of main contactor; Described series connection Lu Yiyu series connection road two is in parallel, and described series connection Lu Yiyu connects, the end points in parallel on road two is connected with described stop button.
Further, described series connection road one is in series with emergent knob.
The beneficial effects of the utility model are: by controlling the power on/off of the coil of electromagnetic relief valve, realize system automatic deloading at any time; Rely on the time-delay characteristics of the moving together contact of main contactor timing closing, can not load during starting electrical machinery, avoid motor belt motor and carry startup; After moving together contact timing closing, the coil of electromagnetic relief valve is energized automatically, and after avoiding electric motor starting, workman also needs special hand to start the step of electromagnetic relief valve, simplifies operation.
Accompanying drawing explanation
Fig. 1 is existing concrete pump distribution system configuration schematic diagram;
Fig. 2 is example structure schematic diagram
Fig. 3 is the main circuit diagram of existing concrete pump distribution system;
For controlling the control circuit figure of main contactor coil in Fig. 4 existing concrete pump distribution system
Fig. 5 is for controlling the control circuit figure of main contactor coil in embodiment;
The improvement figure of Fig. 6 embodiment control circuit.
Number in figure: 1-fuel tank; 2-constant pressure pump; 3-motor; 301-machine winding coil; 4-one-way valve; 5-pilot operated compound relief valve; 6-pressure gauge; 7-electromagnetic relief valve; 701-solenoid valve; The coil of 7011-electromagnetic relief valve; 8-solenoid directional control valve; 9-accumulator; The two oil cylinder of 10-; 11-air-break switch; 12-main contactor; The auxiliary contact of 1201-main contactor; The main contact of 1202-main contactor; The moving together contact of 1203-main contactor timing closing; 13-stop button; 14-start button; 15-meets an urgent need knob; 16-hand stop valve.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in Figure 1, existing concrete pump distribution system comprises fuel tank 1, constant pressure pump 2, motor 3, one-way valve 4, hydraulic unloading device, pressure gauge 6, solenoid directional control valve 8, accumulator 9, two oil cylinder 10.Wherein hydraulic unloading device is made up of pilot operated compound relief valve 5 and hand stop valve 16; pilot operated compound relief valve 5 must meet pressure differential ability releasing pressure automatically; when not meeting pressure differential or system-down time, carry out off-load by opening hand stop valve 16.
The main circuit of existing concrete pump distribution system as shown in Figure 2, comprises air-break switch 11, machine winding coil 301, main contactor main contact 1202.
The control circuit of existing concrete pump distribution system comprises two-part: for controlling the part one of main contactor 12 coil and the part two for controlling solenoid directional control valve 8 coil.Part two is not improvement of the present utility model, does not repeat here, relate in following examples solenoid directional control valve 8 control, all completed by this part of control circuit.As shown in Figure 3, in existing concrete pump distribution system, described part two comprises stop button 13, for starting start button 14, the coil 5 of main contactor, the auxiliary contact 1201 of main contactor of main contactor.
Embodiment
For realize concrete pump distribution system in running and terminate after automatic deloading, as depicted in figs. 1 and 2, the pilot operated compound relief valve 5 of prior art is implemented to replace to electromagnetic relief valve 7, the main contactor of the moving together contact of band timing closing selected by main contactor 12 simultaneously, cancels hand stop valve 16 simultaneously.It should be noted that, electromagnetic relief valve 7 is actually and adds a solenoid valve 701 on common pilot operated compound relief valve, therefore the function of the existing common pilot operated compound relief valve of electromagnetic relief valve 7, can also carry out n-back test by electricity simultaneously.In the present embodiment, under powering-off state, electromagnetic relief valve 7 is unloading condition.Due to the functional characteristic of electromagnetic relief valve 7, so hand stop valve 16 of the prior art can be cancelled by we.
As shown in Figure 5, in the present embodiment, the part two of control circuit comprises the start button 14 started for main contactor, the stop button 13, the coil 12 of main contactor, the auxiliary contact 1201 of main contactor, the moving together contact 1203 of main contactor timing closing, the coil 7011 (being in fact exactly the coil of solenoid valve 701) of electromagnetic relief valve that stop for system; The coil 7011 of electromagnetic relief valve is connected with the moving together contact 1203 of main contactor timing closing, composition series connection road one; The coil 12 of main contactor is connected with described start button 14, composition series connection road two; Described start button 14 is also in parallel with the auxiliary contact 1201 of main contactor; Described series connection Lu Yiyu series connection road two is in parallel, and described series connection Lu Yiyu connects, the end points in parallel on road two is connected with described stop button 13.For reply emergency case, as shown in Figure 6, to form connect in road at the coil 7011 of electromagnetic relief valve with described moving together contact 1203, we can connect an emergent knob 15, emergent knob 15 can to coil 7011 emergency power off of electromagnetic relief valve, thus allows the urgent off-load of relief valve 7.
The working procedure of concrete pump distribution system is as follows:
Before concrete pump start, electromagnetic relief valve 7 and solenoid directional control valve 8 power-off, solenoid directional control valve 8 is in the upper work of initial position, and electromagnetic relief valve 7 is in unloading condition.
During starting electrical machinery 3, first close air-break switch 11, then press start button 14, and the coil 12 of main contactor is energized, then the closed energising of main contact 1202 of main contactor, and machine winding coil 301 is energized, and motor 3 starts; Meanwhile, the closed energising of auxiliary contact 1201 of main contactor forms self-insurance; After a period of time (time span depends on the setting of the moving together contact 1203 of main contactor timing closing), moving together contact 1203 time delay of main contactor timing closing is connected, the coil 7011 of electromagnetic relief valve obtains electric, the part one of our operation control circuit makes the work of solenoid directional control valve 8 bottom simultaneously, solenoid directional control valve 8 oil circuit disconnects, electromagnetic relief valve 7 starts normally to do relief valve work, and accumulator 9 starts topping up accumulation of energy.Pressure gauge 6 is as electromagnetic relief valve 7 pressure regulation use, and after the accumulation of energy of accumulator 9 topping up completes, by giving the left and right electromagnet coil power of solenoid directional control valve 8, solenoid directional control valve 8 commutates, thus realizes two left and right motion of oil cylinder 10, realizes Concrete Pump with S pipe and swings.Because constant pressure pump 2 has pressure cut off function, its setting pressure is lower than the setting pressure of electromagnetic relief valve 7, and therefore electromagnetic relief valve 7 is real is safety valve.
When concrete pump need quit work; press stop button 13; whole control circuit power-off; auxiliary contact 1201 power-off of coil 5 power-off of main contactor, the main contact 1202 of main contactor and main contactor is thrown off; machine winding coil 301 power-off; motor 3 stops operating; the moving together contact 1203 of main contactor timing closing disconnects simultaneously; coil 5 dead electricity of electromagnetic relief valve 7; solenoid valve on electromagnetic relief valve 7 gets back to initial position under spring force; unloading condition made by electromagnetic relief valve 7, and accumulator 9 release pressure, realizes shutdown system off-load.
To sum up, by the power on/off of the coil 7011 of electromagnetic relief valve, achieve system automatic deloading at any time; Due to the time-delay characteristics of the moving together contact 1203 of main contactor timing closing, can not load during starting electrical machinery, after timing closing, the coil 7011 of electromagnetic relief valve is energized automatically, and after eliminating electric motor starting, workman also needs special hand to start the step of electromagnetic relief valve 7.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (2)
1. concrete pump distribution system, comprise hydraulic unloading device, for electric motor starting main contactor, for main contactor start start button, for system stop stop button; It is characterized in that, described hydraulic unloading device comprises electromagnetic relief valve, and described main contactor comprises the moving together contact of coil, auxiliary contact, timing closing; The coil of electromagnetic relief valve is connected with the moving together contact of main contactor timing closing, composition series connection road one; The coil of main contactor is connected with described start button, composition series connection road two; Described start button is also in parallel with the auxiliary contact of main contactor; Described series connection Lu Yiyu series connection road two is in parallel, and described series connection Lu Yiyu connects, the end points in parallel on road two is connected with described stop button.
2. concrete pump distribution system as claimed in claim 1, it is characterized in that, described series connection road one is in series with emergent knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520526815.3U CN204941806U (en) | 2015-07-20 | 2015-07-20 | Concrete pump distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520526815.3U CN204941806U (en) | 2015-07-20 | 2015-07-20 | Concrete pump distribution system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204941806U true CN204941806U (en) | 2016-01-06 |
Family
ID=55009244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520526815.3U Active CN204941806U (en) | 2015-07-20 | 2015-07-20 | Concrete pump distribution system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204941806U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864502A (en) * | 2016-06-03 | 2016-08-17 | 南京工程学院 | Integrated valve block device with mechanical and electric double protection |
-
2015
- 2015-07-20 CN CN201520526815.3U patent/CN204941806U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864502A (en) * | 2016-06-03 | 2016-08-17 | 南京工程学院 | Integrated valve block device with mechanical and electric double protection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102602385B (en) | Parking braking system and engineering machinery | |
| CN204704167U (en) | Double loop energy storage type hydraulic control slow closing valve hydraulic station | |
| CN204941806U (en) | Concrete pump distribution system | |
| CN202165256U (en) | Controller for air compressor | |
| CN106015123B (en) | Quarry tipper accumulator pressure release control method | |
| CN103062165B (en) | Hydraulic power system and the application in new-energy automobile thereof | |
| CN204592458U (en) | A kind of surge reliever | |
| CN201265499Y (en) | Concrete pump with automatic concrete pumping apparatus | |
| CN203272347U (en) | Hydraulic power system and application thereof in new energy automobile | |
| CN202370941U (en) | Test platform for spare part of hydraulic switching mechanism | |
| CN201746567U (en) | Hydraulic quick-acting switching-off control device for gas switching-off valve used for blast stove | |
| CN203240064U (en) | Energy accumulator locked hydraulic-control slow-closing valve actuator | |
| CN204985168U (en) | Detection apparatus for hydraulic manifold block is gently pushed down to conticaster | |
| CN201206541Y (en) | Electrovalve control circuit of high and low voltage thin oil station | |
| CN204419760U (en) | A kind of hydraulic system loss protecting device | |
| CN208353247U (en) | A kind of dragger of noise reduction emission reduction | |
| CN202099830U (en) | Automatic water supply system for construction water | |
| CN201925589U (en) | Detector for fast valve closing device | |
| CN203240054U (en) | Energy accumulator type hydraulic-control slow-closing valve actuator | |
| CN204200284U (en) | Turbine emergency interrupting system report control platform and steam turbine | |
| CN210838927U (en) | Anti-misoperation protection circuit of electro-hydraulic practical training workbench | |
| CN202971135U (en) | Control loop of air compressor starting under no-load | |
| CN204155537U (en) | A kind of power transformer oil impregnate phenomena simulation actual training device | |
| CN204212911U (en) | Speed regulator pressure oil groove pressurizer | |
| CN204805683U (en) | Auxiliary relay protection device among solenoid valve control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |