CN102168664A - Double-pump junction speed-increasing augmenter of hydraulic system used for concrete pump - Google Patents
Double-pump junction speed-increasing augmenter of hydraulic system used for concrete pump Download PDFInfo
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- CN102168664A CN102168664A CN2011101081197A CN201110108119A CN102168664A CN 102168664 A CN102168664 A CN 102168664A CN 2011101081197 A CN2011101081197 A CN 2011101081197A CN 201110108119 A CN201110108119 A CN 201110108119A CN 102168664 A CN102168664 A CN 102168664A
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Abstract
The invention provides a double-pump junction speed-increasing augmenter of a hydraulic system used for a concrete pump. The device is provided with a connecting oil line (1), wherein a first input end T1 of the connecting oil line (1) is connected with a first oil pump (2), and a second input end T2 of the connecting oil line (1) is connected with a second oil pump (3); the second oil pump (3) is connected with a first check valve (4); a second check valve (6) is connected between the first oil pump (2) and the first check valve (4); the connecting oil line (1) is connected with an oil line between the first oil pump (2) and the second check valve (6); and the oil line between the first check valve (4) and the second check valve (6) is connected with an energy accumulator (5). Therefore, the device enables the oil pump to operate more stably, and prominently improves the pumping capacity of the hydraulic system of the concrete pump, the power performance of dispensing equipment and the reliability of the hydraulic system.
Description
Technical field
The invention belongs to the concrete pump technical field, relate in particular to a kind of concrete pump and collaborate speeding up and thrust augmentation device with the hydraulic system double pump.
Background technique
Concrete pump hydraulic system drives its pumping installations and dispensing device in concrete pump.Existing hydraulic system, the two oil circuit devices of the single oil pump of the employing that has drive its pumping installations and dispensing device; The two oil circuit devices of the two oil pumps of the employing that has drive its pumping installations and dispensing device respectively.Its hydraulic system only possesses the pumping capacity that at the uniform velocity pushes, so when main oil pump was operated in permanent power control zone, the former often the phenomenon that oil circuit is short of power or the oil circuit hydraulic shock is bigger occurred distributing because of pressure fuel pump raises, discharge capacity descends; It distributes oil circuit constant pressure pump frequent transitions working state between maximum pump discharge and minimum injection rate latter Ze Yin, cause rate of fault rising, operating life to shorten, and oil pump usefulness is not in full use.Above-mentioned defective not only has a negative impact to the functional reliability of concrete pump, has also increased the manufacturing and the maintenance cost of product.Especially it is pointed out that the existing concrete pump hydraulic system has the pumping capacity that at the uniform velocity pushes because of it, the ability that makes it overcome pumping resistance is not enough, so the plugging fault takes place at work easily.
Summary of the invention
The technical problem to be solved in the present invention is, defective at the prior art existence, provide a kind of concrete pump to collaborate speeding up and thrust augmentation device with the hydraulic system double pump, this device helps to eliminate the problem that pumping and dispensing device are short of power, improve the oil pump working state, improve service behaviour, efficient and the reliability of concrete pump hydraulic system, replace existing at the uniform velocity push technology with a kind of new speedup accentuated push feed technique, promote the pumping capacity of concrete pump hydraulic system and distribute performance, thereby significantly improve the reliability of hydraulic system.
Technical solution of the present invention is, the above-mentioned this concrete pump that provides collaborates speeding up and thrust augmentation device with the hydraulic system double pump, referring to Fig. 1, this device has the connection oil circuit 1 of band first input end T1, the second input end T2 and output terminal B, the first input end T1 pipe of described connection oil circuit 1 is connected to one first oil pump 2, and the input oil circuit pipe of this first input end T1 and this first oil pump 2 connects; The second input end T2 pipe of described connection oil circuit 1 is connected to second oil pump 3, and this second input end T2 also connects with the input oil circuit pipe of this second oil pump 3.Its technical characterstic is to be connected with one first one-way valve 4 on the output circuit of described second oil pump 3; Be connected with one second one-way valve 6 between the output circuit of described first oil pump 2 and this first one-way valve 4.Oil circuit pipe between the output terminal B of above-mentioned connection oil circuit 1 and described first oil pump 2 and described second one-way valve 6 connects.Pipe is connected to an accumulator 5 on the oil circuit between described first one-way valve 4 and described second one-way valve 6.The accumulation of energy pressure P 2 of the described accumulator 5 of oil circuit pressure P 1 control of the output terminal B of above-mentioned connection oil circuit 1.
Working principle of the present invention is that described concrete pump can be a variable displacement pump with the oil pump of hydraulic system double pump interflow speeding up and thrust augmentation device, also can be metering pump; Hydraulic oil sucks via first input end T1, the second input end T2 from first oil pump 2 and second oil pump 3 respectively successively.The oil circuit pressure P 1 control accumulation of energy pressure P 2 of output terminal B, pressure increase, accumulation of energy and release can ability increase, this variation in pressure is adapted to the variation of the oil circuit pressure of working oil path device automatically.P1 is during greater than P2, and to accumulator 5 accumulation of energys, directly export from output terminal B by the power oil that first oil pump 2 provides through first one-way valve 4 for second oil pump 3; P2 is during greater than P1, and the power oil of the power oil of second oil pump 3 and first one-way valve 4 and accumulator 5 through the power oil interflow of second one-way valve 6 and first oil pump 2, is exported from output terminal B together simultaneously.When first oil pump 2, second oil pump, 3 fuel cut-offs, the pressure oil of accumulator 5 discharges automatically through second one-way valve 6; Meanwhile, first one-way valve 4 is isolated second oil pump 3 and accumulators 5, and the recoil of protecting second oil pump 3 to avoid the pressure oil that discharges from accumulator 5 is hit.In the dispensing device commutation process, this device interflow provides the power oil of first oil pump 2, second oil pump 3 and accumulator 5 to satisfy its flow and pressure demand, and distributing valve is commutated fast; Finish under the state that commutation, pumping installations start working at distributing valve, this device earlier provides power oil by first oil pump 2 to pumping installations, second oil pump 3 is after finishing to accumulator 5 accumulation of energys through first one-way valve 4, provide power oil via second one-way valve 6 to pumping installations, thereby make pumping installations obtain the afterburning pumping capacity that pushes of speedup.
The invention has the beneficial effects as follows, above-mentioned technical feature makes the power performance of pumping installations and dispensing device and reliability effectively be improved and strengthen, oil pump can moved under the working state more stably, thereby with a kind of new speedup accentuated push feed technique, break through the constraint of traditional mode, improved the pumping capacity of concrete pump hydraulic system, the power performance of dispensing device and the reliability of hydraulic system significantly.
Description of drawings
Fig. 1 is the structural representation of concrete pump of the present invention with hydraulic system double pump interflow speeding up and thrust augmentation device, being denoted as among the figure:
1-connects oil circuit,
2-first oil pump,
3-second oil pump,
4-first one-way valve,
The 5-accumulator,
6-second one-way valve.
Embodiment
The concrete pump of present embodiment collaborates speeding up and thrust augmentation device with the hydraulic system double pump, as shown in Figure 1, have band first input end T1, the second input end T2 that the hydraulic pipe line pipe connects and the connection oil circuit 1 of output terminal B, the first input end T1 of this connection oil circuit 1 connects first oil pump 2 and adopts commercially available A8V type oil pump, and the input oil circuit pipe of the first input end T1 and first oil pump 2 connects; The second input end T2 of this connection oil circuit 1 connects second oil pump 3 and adopts commercially available Kweiyang power source company to produce A10V type oil pump, and the second input end T2 also connects with the input oil circuit pipe of second oil pump 3.Connect first one-way valve 4 on the output circuit of this second oil pump 3 and adopt commercially available S10 type one-way valve; Second one-way valve 6 that connects also adopts commercially available S10 type one-way valve between the output circuit of first oil pump 2 and this first one-way valve 4.Connecting the output terminal B of oil circuit 1 and the oil circuit pipe between first oil pump 2 and second one-way valve 6 connects.Accumulator 5 adopts commercially available XL4 type accumulator, and pipe is connected on the oil circuit between first one-way valve 4 and second one-way valve 6.
The double pump interflow speeding up and thrust augmentation device that should example accumulation of energy adjustable in pressure of the present invention that constitutes thus on probationly is proved to be respond well through manufacturing experimently, and reaches designing requirement fully.When this device used, as shown in Figure 1, referring to Fig. 1, hydraulic oil entered second oil pump 3 from the second input end T2, gave accumulator 5 accumulation of energys after second one-way valve 6 is exported from output terminal B through first one-way valve 4; Directly export through first oil pump 2 from the hydraulic oil that first input end T1 provides from output terminal B; Communicate with the pressure oil district of working oil path device from the pressure oil of output terminal B output, the oil circuit pressure and the energy accumulating state of the oil circuit pressure control double pump interflow speeding up and thrust augmentation device of working oil path device, pumping pressure increases, and accumulation of energy pressure and volume also increase, and releases ability to strengthen.When the working oil path device was in the pumping state, first oil pump 2 of double pump interflow speeding up and thrust augmentation device made pumping installations begin to push action from output terminal B outputting power oil; Meanwhile, second oil pump 3 carries out isobaric accumulation of energy to accumulator 5 earlier through first one-way valve 4, finish accumulation of energy after, its power oil also enters pumping installations from output terminal B through second one-way valve 6, strengthens to push power, improves pushing speed, realizes that speedup is afterburning to push.When the working oil path device is in the distributing valve commutation states, first oil pump 2 of double pump interflow speeding up and thrust augmentation device, second oil pump 3, accumulator 5 are simultaneously from output terminal B outputting power oil, make dispensing device obtain the power oil supply of fullest in commutation process, commutation is finished in the distributing valve quick acting.Especially when first oil pump 2 is operated in permanent power district, pumping pressure increases, oil pump capacity reduces, and the double pump of being made up of first oil pump 2 and second oil pump 3 collaborates speeding up and thrust augmentation device can guarantee that the working oil path device normally finishes its pumping and distributing valve commutation process.Meanwhile, oil pump always works in plateau.When first oil pump 2 of above-mentioned double pump interflow speeding up and thrust augmentation device, second oil pump, 3 fuel cut-offs, the pressure oil of accumulator 5 discharges automatically through second one-way valve 6; Meanwhile, first one-way valve 4 is isolated second oil pump 3 and accumulators 5, and the recoil of protecting second oil pump 3 to avoid the pressure oil that discharges from accumulator 5 is hit.
Claims (1)
1. a concrete pump collaborates speeding up and thrust augmentation device with the hydraulic system double pump, this device has the connection oil circuit (1) of band first input end T1, the second input end T2 and output terminal B, the first input end T1 pipe of described connection oil circuit (1) is connected to one first oil pump (2), and the input oil circuit pipe of this first input end T1 and this first oil pump (2) connects; The second input end T2 pipe of described connection oil circuit (1) is connected to second oil pump (3), and this second input end T2 also connects with the input oil circuit pipe of this second oil pump (3), it is characterized in that, is connected with one first one-way valve (4) on the output circuit of described second oil pump (3); Be connected with one second one-way valve (6) between the output circuit of described first oil pump (2) and this first one-way valve (4), oil circuit pipe between the output terminal B of above-mentioned connection oil circuit (1) and described first oil pump (2) and described second one-way valve (6) connects, on the oil circuit between described first one-way valve (4) and described second one-way valve (6) successively pipe be connected to an accumulator (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101081197A CN102168664A (en) | 2011-04-19 | 2011-04-19 | Double-pump junction speed-increasing augmenter of hydraulic system used for concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101081197A CN102168664A (en) | 2011-04-19 | 2011-04-19 | Double-pump junction speed-increasing augmenter of hydraulic system used for concrete pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102168664A true CN102168664A (en) | 2011-08-31 |
Family
ID=44489948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101081197A Pending CN102168664A (en) | 2011-04-19 | 2011-04-19 | Double-pump junction speed-increasing augmenter of hydraulic system used for concrete pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102168664A (en) |
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2011
- 2011-04-19 CN CN2011101081197A patent/CN102168664A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 410003 Hunan province Changsha Kaifu District, the 31 Avenue Wan Xu garden building C10 Room 203 Applicant after: He Yangdong Address before: 410126 Hunan province Changsha Furong district Zhanggongling weft twelve road Changsha Haiyida Machinery Co. Ltd. Applicant before: He Yangdong |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110831 |