CN2779135Y - Vibration damping and full flux cooling apparatus of concrete pump - Google Patents
Vibration damping and full flux cooling apparatus of concrete pump Download PDFInfo
- Publication number
- CN2779135Y CN2779135Y CN 200520069298 CN200520069298U CN2779135Y CN 2779135 Y CN2779135 Y CN 2779135Y CN 200520069298 CN200520069298 CN 200520069298 CN 200520069298 U CN200520069298 U CN 200520069298U CN 2779135 Y CN2779135 Y CN 2779135Y
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Abstract
The utility model relates to a vibration damping and full flux cooling apparatus of a concrete pump, which adopts two alternately moving oil cylinders which are symmetrically arranged; oil passages which are used for controlling the oil cylinders to move are provided with controlling devices; magnetic exchange valves in the controlling devices are communicated with oil passages which are used for controlling the displacement of an oil pump, and the space of which is orderly provided with the magnetic exchange valves and pressure reducing valves; the oil inlet pipes connected with the two oil cylinders are orderly provided with the oil pump and an oil suction filter; the oil returning pipes are provided with an energy accumulator; the lower part of the energy accumulator is orderly provided with an oil returning filter and a cooler. When used in a concrete pump hydraulic system, the utility model can reduce the energy loss and the pressure impact in a commutation process, and keep the oil pressure in a loop steady. Through being tested, the impact peak value of the maximum pressure on the position of an oil inlet of the cooler is changed from the original value of 2 Mpa to less than 0.5 Mpa, and simultaneously, the reliability of an air cooling system is improved.
Description
Technical field
The utility model relates to concrete pump hydraulic system buffer shock-absorbing, full flow cooling unit, is particularly useful for concrete pump.
Background technique
For the cooling of transmission and concrete transmission pump hydraulic system, adopt air cooler refrigeration, yet at present when selecting the air cooler refrigeration, following problems may be encountered more:
1) when the cooling and stirring system oil return, though operate steadily, its flow is little, does not reach desirable cooling effect;
2) when the oil return of cooling oscillation system, not only flow is little, but also big because of impacting, and is easy to damage cooling element;
3) adopt the type of cooling of " independent loops ", promptly be provided with separately a cooling oil pump from the fuel tank oil suction, pump into cooler, and then get back to fuel tank.Before system pressure impact is not by fine elimination, this scheme a kind of feasible type of cooling of can yet be regarded as, but also there is following deficiency in it: the one, owing to need set up motor and oil hydraulic pump, cause cost to increase; The 2nd, the oil in the cooling fuel tank is effective not as the direct cooling system loop, and the 3rd, system architecture and layout are obviously complicated.
Summary of the invention
In view of the problem that prior art exists, the purpose of this utility model provides that a kind of system cools is effective, and compression shock is little, concrete pump hydraulic system buffer shock-absorbing, full flow cooling unit simple in structure.
The utility model concrete pump hydraulic system buffer shock-absorbing, full flow cooling unit, it comprises that two are symmetrical arranged the oil cylinder of doing alternating motion, the oil circuit of two oil cylinders is connected with hydraulicchange-over valve respectively, the control oil channel of hydraulicchange-over valve is provided with the solenoid directional control valve of its action of control, hydraulicchange-over valve oil inlet and oil return pipeline is provided with electromagnetic relief valve, is sequentially with oil pump and oil suction filter on the in-line of hydraulicchange-over valve connection fuel tank; The return line that connects fuel tank is provided with the accumulator that absorbs return pressure, is sequentially with return filter and cooler under the accumulator; Be serially connected with solenoid directional control valve and reduction valve on the oil pump capacity control oil channel, the oil circuit of reduction valve is connected with the discharge capacity control oil channel of oil pump.
The utility model concrete pump hydraulic system buffer shock-absorbing, the full flow cooling unit, be used in the concrete pump hydraulic system, can reduce energy loss and the compression shock of pump machine in commutation process greatly, keep the steady of loop oil pressure, show through experimental test, the pressure maximum impact peak value at air cooler filler opening place has been dropped in the 0.5Mpa by original 2Mpa, improved the reliability of air cooling system greatly, thereby can guarantee the reliably working that full flow is air-cooled, this apparatus structure is simple, and is rationally distributed, easy to maintenance, vibration damping and good cooling results have practicability widely.
Description of drawings
Fig. 1 is the utility model structural system figure.
Among the figure: 1-oil pump 2-oil suction filter 3-fuel tank 4-cooler 5-return filter 6-accumulator 7-electromagnetic relief valve 8-oil cylinder 9-hydraulicchange-over valve 10-solenoid directional control valve 11-solenoid directional control valve 12-reduction valve
Embodiment
Below in conjunction with accompanying drawing an embodiment of the present utility model is further described:
The utility model concrete pump hydraulic system buffer shock-absorbing, the full flow cooling unit, it is mainly by main oil pump 1, oil suction filter 2, return filter 5, accumulator 6, oil cylinder 8, reduction valve 12, composition such as hydraulicchange-over valve and solenoid directional control valve, oil cylinder 8 is symmetrically arranged with two, be connected with four-way hydraulicchange-over valve 9 respectively on its oil pipe line, do alternating motion by two oil cylinders 8 of hydraulicchange-over valve 9 controls, the control oil channel of hydraulicchange-over valve 9 is provided with the solenoid directional control valve 10 of its action of control, the oil pipe line of hydraulicchange-over valve 9 is provided with electromagnetic relief valve 7, is serially connected with main oil pump 1 and oil suction filter 2 on the in-line of its connection fuel tank 3; The return line that connects fuel tank 3 is provided with accumulator 6, and accumulator 6 has cooler 4, is provided with return filter 5 before the cooler 4; Serial connection one reduction valve 12 and two-position three way solenoid directional control valve 11 on the oil pump capacity control oil channel, the oil circuit of reduction valve 12 is connected with main oil pump 1.Main oil pump 1 is selected cam-type axial piston pump for use, and its discharge capacity is minus flow control; Main oil pump 1 pilot pressure oil is taken from the oil in the oscillation system.When solenoid directional control valve 11 must not when electricity, pilot pressure oil from oscillation system is blocked by this magnetic selector valve 11, with the logical fuel tank of main oil pump 1 discharge capacity control system pressure oil, the pressure oil pressure of at this moment controlling main oil pump 1 discharge capacity is zero or very little simultaneously, and main oil pump 1 can maximum discharge capacity delivery hydraulic pressure oil.When solenoid directional control valve 11 when electric, this valve is connected pilot pressure oil, through the discharge capacity of the control oil control main oil pump 1 of the required pressure of reduction valve 12 outputs, makes the discharge capacity of main oil pump 1 be reduced to minimum or is zero.
When 8 one working strokes of pumping oil cylinder put in place, sensor sent the commutation electrical signal, and at this moment, it is electric that electric control system gets solenoid directional control valve 11, connects the pilot pressure oil of main oil pump 1, makes the swash plate of main oil pump 1 put back zero-bit, and promptly output flow is zero or very little; After 9,10 commutations of pumping electro-hydraulic reversing valve put in place, electric control system makes solenoid valve 11 dead electricity, the control-oil pressure that makes main oil pump 1 is zero, oil pump is promptly with normal pump displacement work, can reduce the compression shock of system in commutation process greatly like this, particularly under mesolow pumping system pressure condition, it is obvious especially that compression shock reduces degree.
When main oil pump 1 pumping distance or height are big, only depend on the discharge capacity that changes main oil pump 1, be not enough to obtain good cushioning effect, at this moment, the accumulator 6 that is provided with in the main oil circuit works, and can effectively absorb the compression shock in the commutation process, keeps the oil pressure of oil circuit stable; And, place return filter 5 before the cooler 4 also can play to reduce to entering the oil shock effect before the cooler 4.
Claims (1)
1. concrete pump hydraulic system buffer shock-absorbing, full flow cooling unit, it is characterized in that: it comprises that two are symmetrical arranged the oil cylinder (8) of doing alternating motion, the oil circuit of two oil cylinders (8) is connected with hydraulicchange-over valve (9) respectively, the control oil channel of hydraulicchange-over valve (9) is provided with the solenoid directional control valve (10) of its action of control, hydraulicchange-over valve (9) oil inlet and oil return pipeline is provided with electromagnetic relief valve (7), is sequentially with oil pump (1) and oil suction filter (2) on the in-line of hydraulicchange-over valve (9) connection fuel tank (3); The return line that connects fuel tank (3) is provided with the accumulator (6) that absorbs return pressure, is sequentially with return filter (5) and cooler (4) under the accumulator (6); Be serially connected with solenoid directional control valve (11) and reduction valve (12) on the oil pump capacity control oil channel, the oil circuit of reduction valve (12) is connected with the discharge capacity control oil channel of oil pump (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520069298 CN2779135Y (en) | 2005-02-28 | 2005-02-28 | Vibration damping and full flux cooling apparatus of concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520069298 CN2779135Y (en) | 2005-02-28 | 2005-02-28 | Vibration damping and full flux cooling apparatus of concrete pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2779135Y true CN2779135Y (en) | 2006-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520069298 Expired - Fee Related CN2779135Y (en) | 2005-02-28 | 2005-02-28 | Vibration damping and full flux cooling apparatus of concrete pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2779135Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776107A (en) * | 2010-03-24 | 2010-07-14 | 长沙中联重工科技发展股份有限公司 | Exact stroke control method and stroke control device of serial oil cylinders |
| CN102434510A (en) * | 2011-11-23 | 2012-05-02 | 中联重科股份有限公司 | Pumping equipment and high-low pressure switching system of pumping equipment, pumping system and operation method of pumping system |
| CN102434541A (en) * | 2011-10-11 | 2012-05-02 | 飞翼股份有限公司 | Confluence block used for filling industrial pump hydraulic pressure return line |
| CN102551494A (en) * | 2011-12-30 | 2012-07-11 | 厦门优尔电器有限公司 | Juicer |
| CN102551495A (en) * | 2011-12-30 | 2012-07-11 | 厦门优尔电器有限公司 | Novel juicer |
| CN103075391A (en) * | 2013-01-03 | 2013-05-01 | 安徽恒源煤电股份有限公司 | Hydraulic system of car pusher |
| CN103089757A (en) * | 2013-01-29 | 2013-05-08 | 三一重工股份有限公司 | Closed hydraulic loop hot oil displacement system and concrete pumping device |
| WO2015078249A1 (en) * | 2013-11-26 | 2015-06-04 | 三一汽车制造有限公司 | Integrated hydraulic valve unit, hydraulic driving system and concrete pump |
| CN108953089A (en) * | 2018-08-02 | 2018-12-07 | 日昌升集团有限公司 | A kind of high-pressure slurry drug delivery pump system and method |
| CN110878778A (en) * | 2019-11-28 | 2020-03-13 | 宁波文泽机电技术开发有限公司 | Engineering machinery vibration damper |
-
2005
- 2005-02-28 CN CN 200520069298 patent/CN2779135Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776107B (en) * | 2010-03-24 | 2012-05-30 | 中联重科股份有限公司 | Exact stroke control method and stroke control device of serial oil cylinders |
| CN101776107A (en) * | 2010-03-24 | 2010-07-14 | 长沙中联重工科技发展股份有限公司 | Exact stroke control method and stroke control device of serial oil cylinders |
| CN102434541B (en) * | 2011-10-11 | 2014-04-30 | 飞翼股份有限公司 | Confluence block used for filling industrial pump hydraulic pressure return line |
| CN102434541A (en) * | 2011-10-11 | 2012-05-02 | 飞翼股份有限公司 | Confluence block used for filling industrial pump hydraulic pressure return line |
| CN102434510A (en) * | 2011-11-23 | 2012-05-02 | 中联重科股份有限公司 | Pumping equipment and high-low pressure switching system of pumping equipment, pumping system and operation method of pumping system |
| CN102434510B (en) * | 2011-11-23 | 2015-03-18 | 中联重科股份有限公司 | Pumping equipment and high-low pressure switching system of pumping equipment, pumping system and operation method of pumping system |
| CN102551494A (en) * | 2011-12-30 | 2012-07-11 | 厦门优尔电器有限公司 | Juicer |
| CN102551494B (en) * | 2011-12-30 | 2014-02-26 | 厦门优尔电器有限公司 | Juicer |
| CN102551495B (en) * | 2011-12-30 | 2014-04-09 | 厦门优尔电器有限公司 | Juicer |
| CN102551495A (en) * | 2011-12-30 | 2012-07-11 | 厦门优尔电器有限公司 | Novel juicer |
| CN103075391A (en) * | 2013-01-03 | 2013-05-01 | 安徽恒源煤电股份有限公司 | Hydraulic system of car pusher |
| CN103089757A (en) * | 2013-01-29 | 2013-05-08 | 三一重工股份有限公司 | Closed hydraulic loop hot oil displacement system and concrete pumping device |
| CN103089757B (en) * | 2013-01-29 | 2015-03-18 | 三一汽车制造有限公司 | Closed hydraulic loop hot oil displacement system and concrete pumping device |
| WO2015078249A1 (en) * | 2013-11-26 | 2015-06-04 | 三一汽车制造有限公司 | Integrated hydraulic valve unit, hydraulic driving system and concrete pump |
| CN108953089A (en) * | 2018-08-02 | 2018-12-07 | 日昌升集团有限公司 | A kind of high-pressure slurry drug delivery pump system and method |
| CN110878778A (en) * | 2019-11-28 | 2020-03-13 | 宁波文泽机电技术开发有限公司 | Engineering machinery vibration damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |