CN202545387U - Opened type hydraulic system of small-earthwork-capacity concrete mixing transportation vehicle - Google Patents
Opened type hydraulic system of small-earthwork-capacity concrete mixing transportation vehicle Download PDFInfo
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- CN202545387U CN202545387U CN2012201551756U CN201220155175U CN202545387U CN 202545387 U CN202545387 U CN 202545387U CN 2012201551756 U CN2012201551756 U CN 2012201551756U CN 201220155175 U CN201220155175 U CN 201220155175U CN 202545387 U CN202545387 U CN 202545387U
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Abstract
The utility model discloses an opened type hydraulic system of a small-earthwork-capacity concrete mixing transportation vehicle. The opened type hydraulic system comprises a hydraulic gear pump, a one-way valve, an overflowing valve, a pressure reducing valve, a hydraulic control one-way valve, a speed adjusting valve, a filter, a two-way motor and an engine, wherein the output end of the engine is connected with the input end of the hydraulic gear pump; the output end of the hydraulic gear pump is connected with the one-way valve, and then is divided into two paths, wherein one path is connected with the overflowing valve, and the other path is connected with the pressure reducing valve and then is divided into a trunk path and a branch path; the trunk path is connected with the two-way motor by one oil path of a three-position four-way electromagnetic valve; the two-way motor returns oil by another oil path of the three-position four-way electromagnetic valve; and the branch path is connected with a two-position two-way electromagnetic valve, is connected with the hydraulic control one-way valve and the speed adjusting valve in parallel and then is connected with the input end of the filter. The opened type hydraulic system disclosed by the utility model has the advantages that the structure is simple, the radiation is excellent, the cost is low and the requirement on the maintenance cost is low.
Description
Technical field
The utility model relates to a kind of open type hydraulic system, relates in particular to a kind of open type hydraulic system of little side's amount concrete mixing and transporting car, belongs to agitator truck hydraulic system technical field.
Background technique
At present, concrete mixing and transporting car has been widely used in building, bridge, large water conservancy hydroelectric engineering, and concrete mixing and transporting car need design repacking on chassis special can adapt to different construction environments.Under the good situation of road conditions, transit mixer is to the development of generous amount, chassis special, but in the mountain area the abominable area of road environment particularly, the applicability of this generous amount transit mixer is not good, mountain road badly causes generous amount transit mixer to adapt to.For this reason; Little side's amount transit mixer arises; But existing little side's amount transit mixer adopts the hydraulic system of import mostly, and this causes the Costco Wholesale of little side's amount transit mixer high always, when auxiliary component need be changed; The untimely meeting of following up of the auxiliary equipment of import causes construction delay, and engineering is caused great economic loss.
In addition; Existing little side's amount transit mixer adopts closed system mostly; Its structure is as shown in Figure 1, and in the existing closed system: bidirectional variable plunger pump 1-3 converts hydraulic oil to pressure oil output, and pressure oil directly gets into two-way hydraulic motor 1-12 through pipeline; Drive retarder 1-1 by oil hydraulic motor 1-12, realize clockwise and anticlockwise thereby drive mixing drum 1-2; The low pressure oil return of oil hydraulic motor 1-12 directly gets into the intake side of two-way variable displacement pump 1-3, thereby realizes the periodic duty of whole system.Gear pump 1-5 provide hydraulic oil as slippage pump to system, and it becomes hydraulic oil into pressure oil through filter and gets into low voltage side from fuel tank; Relief valve 1-7 guarantees oil compensation pressure greater than the main system low-pressure lateral pressure, and relief valve 1-6 provides bidirectional variable plunger pump 1-3 switching-over required power, and the positive and negative of bidirectional ram variable displacement pump 1-3 realized through three-dimensional four-way hand-operated direction valve 1-4.One group of one-way valve 1-8 prevents that on the one hand high pressure oil from getting into impact slippage pump 1-5, can realize also that in addition slippage pump 1-5 pressure oil output gets into the system low-voltage side; One group of relief valve 1-9 realizes the bidirectional protective to whole system, antioverloading, and flushing valve 1-11 and relief valve 1-10 realize the process of changing oil of system; In addition, the leakage passage of reversing motor 1-12 and bidirectional variable plunger pump 1-3 is got back to fuel tank through filter 1-1.
Not enough below existing closed system exists:
1) poor heat radiation can't work long hours;
2) in a single day closed system works long hours, and temperature rise is very fast, and oily temperature height will cause the transmission of oil product pressure unstable, cause the hydraulic element leakage rate to heighten, and sealing etc. is all caused bad influence;
3) big multiple component is import parts, costs an arm and a leg; When damage of components need be changed, supporting untimely, bring economic loss;
4) whole system is complicated, and the attendant is required height, and maintenance cost is high.
The model utility content
The purpose of the utility model is: the open type hydraulic system that a kind of little side's amount concrete mixing and transporting car is provided; Solve the existence of existing little side amount car poor heat radiation, can't work long hours; In case work long hours, the hydraulic element leakage rate heightens, and sealing is waited cause bad influence; And system complex, the technical problem that cost an arm and a leg, maintenance cost is high, thus can effectively solve the problem that exists in the above-mentioned existing technology.
The purpose of the utility model is to realize through following technical proposals: a kind of open type hydraulic system of little side's amount concrete mixing and transporting car; Comprise hydraulic gear pump, one-way valve, relief valve, reduction valve, Pilot operated check valve, series flow control valve, filter, reversing motor and motor; The output terminal of motor links to each other with the input end of hydraulic gear pump, and the mekydro delivery side of pump is divided into two-way after connecting an one-way valve, and one the tunnel connects relief valve; Another road is divided into main line and branch road after connecting reduction valve; Said main line connects reversing motor through a wherein oil circuit of three position four-way electromagnetic valve, and reversing motor is through another oil circuit oil return of three position four-way electromagnetic valve, after said branch road connects a two-position two-way solenoid valve; Parallel connection Pilot operated check valve and series flow control valve link to each other with the input end of filter again.
As a kind of optimal way, an output termination speed reducer of said reversing motor, another termination mixing drum of speed reducer, said reversing motor drives speed reducer and drives mixing drum.
As further optimal way, said two-position two-way solenoid valve control Pilot operated check valve, the two-position two-way solenoid valve outage, system oil return is got back to fuel tank through filter after through series flow control valve; Two-position two-way solenoid valve energising, system oil return are got back to fuel tank through filter after through Pilot operated check valve.
The effect of part is following in the utility model:
Reversing motor: reversing motor drives speed reducer and can realize rotating and reverse, and drives rotating and reverse of mixing drum.
Motor: the driven gear pump converts hydraulic oil to pressure oil output.
One-way valve: work to prevent that pressure oil from refluxing, the effect of protection gear pump, pressure oil is disposed pressure pulsation through reduction valve after through one-way valve again, the fluctuating pressure oil that gear pump is provided become steadily.
The bi-bit bi-pass solenoid directional control valve: the break-make of pilot pressure control oil, realize the switching of Pilot operated check valve.
Three position four-way electromagnetic valve: realize motor forward and counterrotating, thereby can realize the charging and the discharging of mixing drum.
Relief valve: play the effect of system pressure setting and protective system.
Series flow control valve: the low speed rotation that can realize mixing drum.
Pilot operated check valve: when opening: realize the full speed rotation of mixing drum, when closed: realize the low speed rotation of mixing drum with series flow control valve.
Compared with prior art, the beneficial effect of the utility model: the open type hydraulic system of the little side's amount of the utility model concrete mixing and transporting car, its system architecture is simple, good, the low cost of manufacture of heat radiation, and is low to the maintenance cost requirement, specifically, possesses following advantage:
1), this hydraulic system is open system, radiating condition and radiating effect are all better than closed system, adapt to the long-time construction of rugged environment especially;
2), this hydraulic system can be used for non-transit mixer chassis special and reequip, and reduces the chassis purchase cost;
3), the system of this hydraulic system is simple, cost is low, adopts spare part in common use, when needing to change component, can be supporting in time, reduce the loss.
Description of drawings
Fig. 1 is the schematic diagram of existing closed system;
Fig. 2 is the schematic diagram of the utility model open type hydraulic system.
Among Fig. 2: hydraulic gear pump-1, one-way valve-2, reduction valve-3, bi-bit bi-pass solenoid directional control valve-4, three position four-way electromagnetic valve-5, reversing motor-6, relief valve-7, series flow control valve-8, Pilot operated check valve-9, filter-10, motor-11, speed reducer-12, mixing drum-13.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing the utility model is further described.
Disclosed all characteristics in this specification, or the step in disclosed all methods or the process are except the speciality of mutual repulsion and/or the step; All can make up by any way; Only if special narration all can be replaced by other equivalences or the alternative features with similar purpose, promptly; Only if special narration, an embodiment in a series of equivalences of each characteristic or the similar characteristics.
As shown in Figure 2; The open type hydraulic system of the little side's amount of the utility model concrete mixing and transporting car comprises hydraulic gear pump 1, one-way valve 2, relief valve 7, reduction valve 3, Pilot operated check valve 9, series flow control valve 8, filter 10, reversing motor 6 and motor 11, and said reversing motor 6 drives speed reducer 12 and drives mixing drum 13.The output terminal of motor 11 links to each other with the input end of hydraulic gear pump 1, and motor 11 driven gear pumps 1 convert hydraulic oil to pressure oil output.The output terminal of hydraulic gear pump 1 is divided into two-way after connecting an one-way valve 2; One the tunnel connects relief valve 7; Another road is divided into main line and branch road after connecting reduction valve 3, and one-way valve 2 has risen and prevented that pressure oil from refluxing, the effect of protection gear pump 1; Pressure oil is disposed pressure pulsation through reduction valve 3 after through one-way valve 2 again, the fluctuating pressure oil that gear pump is provided become steadily.Said main line connects reversing motor 6 through a wherein oil circuit of three position four-way electromagnetic valve 5, provides through motor to drive the moment of torsion that mixing drum rotates.Reversing motor 6 is through three position four-way electromagnetic valve 5 another oil circuit oil returns; One output termination speed reducer 12 of said reversing motor 6; Another termination mixing drum 13 of speed reducer 12, reversing motor 6 drives speed reducer 12 and can realize rotating and reverse, and drives rotating and reverse of mixing drum 13.After said branch road connects a two-position two-way solenoid valve 4; Parallel connection Pilot operated check valve 9 and series flow control valve 8; Input end with filter 10 links to each other again; Wherein, said series flow control valve 8 can be realized the at a slow speed stirring of transit mixer in newly advancing, and the Pilot operated check valve 9 of opening state can realize that the high speed of transit mixer charging and discharging stirs.Specifically, said two-position two-way solenoid valve 4 control Pilot operated check valves 9, two-position two-way solenoid valve 4 outages, system oil return is got back to fuel tank through filter 10 after through series flow control valve 8; Two-position two-way solenoid valve 4 energising, system oil return are got back to fuel tank through filter 10 after through Pilot operated check valve 9.
The working principle of the utility model is following:
The oil return of closed system directly gets into plunger pump without cooling; And the oil return of open system will be through pipeline and fuel tank cooling; So better heat-radiation effect, in addition, because the structural design of closed system is very compact; It is untimely to cause dispelling the heat; And open system is because space layout is openr, so be easy to realize with the heat exchange of external environment, therefore drawing this open system possesses the radiating effect better than closed system.
The open type hydraulic system of this little side's amount concrete mixing and transporting car is primarily aimed at railway, bridge and culvert, and manufacturing cost and use cost is low.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (3)
1. the open type hydraulic system of one kind little side amount concrete mixing and transporting car; Comprise hydraulic gear pump (1), one-way valve (2), relief valve (7), reduction valve (3), Pilot operated check valve (9), series flow control valve (8), filter (10), reversing motor (6) and motor (11); It is characterized in that: the output terminal of motor (11) links to each other with the input end of hydraulic gear pump (1); The output terminal of hydraulic gear pump (1) is divided into two-way after connecting an one-way valve (2); One the tunnel connects relief valve (7), and another road is divided into main line and branch road after connecting reduction valve (3), and said main line connects reversing motor (6) through a wherein oil circuit of three position four-way electromagnetic valve (5); Reversing motor (6) is through another oil circuit oil return of three position four-way electromagnetic valve (5); After said branch road connects a two-position two-way solenoid valve (4), parallelly connected Pilot operated check valve (9) and series flow control valve (8), the input end with filter (10) links to each other again.
2. the open type hydraulic system of little side's amount concrete mixing and transporting car as claimed in claim 1; It is characterized in that: an output termination speed reducer (12) of said reversing motor (6); Another termination mixing drum (13) of speed reducer (12), said reversing motor (6) drives speed reducer (12) and drives mixing drum (13).
3. measure the open type hydraulic system of concrete mixing and transporting car like the described little side of arbitrary claim in claim 1 or 2; It is characterized in that: said two-position two-way solenoid valve (4) control Pilot operated check valve (9); Two-position two-way solenoid valve (4) outage, system oil return are got back to fuel tank through filter (10) after through series flow control valve (8); Two-position two-way solenoid valve (4) energising, system oil return are got back to fuel tank through filter (10) after through Pilot operated check valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201551756U CN202545387U (en) | 2012-04-13 | 2012-04-13 | Opened type hydraulic system of small-earthwork-capacity concrete mixing transportation vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201551756U CN202545387U (en) | 2012-04-13 | 2012-04-13 | Opened type hydraulic system of small-earthwork-capacity concrete mixing transportation vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545387U true CN202545387U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201551756U Withdrawn - After Issue CN202545387U (en) | 2012-04-13 | 2012-04-13 | Opened type hydraulic system of small-earthwork-capacity concrete mixing transportation vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN202545387U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628457A (en) * | 2012-04-13 | 2012-08-08 | 成都市新筑路桥机械股份有限公司 | Open type hydraulic system for small-volume concrete mixing and transporting truck |
| CN103256405A (en) * | 2013-05-28 | 2013-08-21 | 新乡市豫新风电设备工程有限公司 | Overflow valve of filtering device |
-
2012
- 2012-04-13 CN CN2012201551756U patent/CN202545387U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628457A (en) * | 2012-04-13 | 2012-08-08 | 成都市新筑路桥机械股份有限公司 | Open type hydraulic system for small-volume concrete mixing and transporting truck |
| CN103256405A (en) * | 2013-05-28 | 2013-08-21 | 新乡市豫新风电设备工程有限公司 | Overflow valve of filtering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20150311 |
|
| RGAV | Abandon patent right to avoid regrant |