CN203686021U - Hydraulic system for automatic tensioning device of belt wheel - Google Patents
Hydraulic system for automatic tensioning device of belt wheel Download PDFInfo
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- CN203686021U CN203686021U CN201320598788.1U CN201320598788U CN203686021U CN 203686021 U CN203686021 U CN 203686021U CN 201320598788 U CN201320598788 U CN 201320598788U CN 203686021 U CN203686021 U CN 203686021U
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- oil hydraulic
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- valve
- hydraulic pump
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Abstract
The utility model discloses a hydraulic system for an automatic tensioning device of a belt wheel. The hydraulic system comprises a hydraulic cylinder and a hydraulic pump, and further comprises an electromagnetic proportional valve set, an energy accumulator and a pressure relay, wherein the oil outlet of the hydraulic pump is respectively communicated with the energy accumulator and the first working port of a second reversing valve, the second working port of the second reversing valve is communicated with a rod cavity of a hydraulic cylinder, and a rodless cavity of the hydraulic cylinder is communicated with a third working port of the second reversing valve; a fourth working port of the second reversing valve is communicated with an oil tank, the rod cavity of the hydraulic cylinder is communicated with the oil outlet of the hydraulic pump through the electromagnetic proportional valve set, a first reversing valve and a third reversing valve sequentially, the first reversing valve and the third reversing valve are connected in parallel and the pressure relay is arranged at the port of the energy accumulator. The hydraulic system provided by the utility model has the characteristics of being reasonable in design, strong in adaptability and stability, high in degree of automation, high in intelligent degree, long in service life and wide in application range, and is capable of realizing self-adaptive tensioning.
Description
Technical field
The utility model belongs to hydraulic driving technical field, relates to a kind of hydraulic system, is specifically related to a kind of hydraulic system for drive pulley auto-tensioning.
Background technique
Along with China's mining and metallurgy industry are showing improvement or progress day by day, Belt Conveyors is constantly towards high-speed, long distance, large conveying quantity and powerful future development, the dynamic characteristic of belt conveyor system becomes increasingly conspicuous, and Belt Conveyors is more and more higher to the requirement of pulley tensioner.Tension device will be realized automatically and make quick response according to the different running statees of line belt, to overcome the hysteresis quality of line belt, thereby effectively ensures the normal operation of Belt Conveyors.At present, in reality, widely used tension device has gravity takeup, fixed tension device and hydraulic type tensioning means etc., but these tension device all can not be realized self adaption tensioning.
Model utility content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, and a kind of belt pulley automatic takeup hydraulic system is provided, and it is reasonable in design, can realize self adaption tensioning, adaptability and stability are strong, and automaticity is very high, intelligent degree is high, and long service life is applied widely.
For achieving the above object, the technical solution adopted in the utility model is: a kind of belt pulley automatic takeup hydraulic system, comprise for adjusting mobile belt wheel location so that the belt between fixed pulley and movable belt wheel reaches the oil hydraulic cylinder of suitable tension force and provides the oil hydraulic pump of high pressure liquid force feed for described oil hydraulic cylinder, it is characterized in that: also comprise the electromagnetic proportional valve group for adjusting described oil hydraulic cylinder oil-feed speed, for system storage high pressure liquid force feed is to prevent the accumulator of described oil hydraulic pump frequent starting and automatically to control according to the force value of hydraulic oil in described accumulator the pressure relay that described oil hydraulic pump starts or shuts down, described oil hydraulic pump oil outlet is communicated with the first working port of accumulator and selector valve two respectively, the second working port of described selector valve two is communicated with described oil hydraulic cylinder rod chamber, described oil hydraulic cylinder rodless cavity is communicated with the 3rd working port of described selector valve two, the 4th working port of described selector valve two is communicated with fuel tank, described oil hydraulic cylinder rod chamber passes through successively described electromagnetic proportional valve group and the selector valve one being connected in parallel and selector valve three and is communicated with the oil outlet of described oil hydraulic pump, and described pressure relay is arranged on described accumulator port.
Above-mentioned belt pulley automatic takeup hydraulic system, is characterized in that: the oil outlet place of described oil hydraulic pump is provided with one-way valve and relief valve, and the inlet port place of described oil hydraulic pump is provided with oil purifier.
Above-mentioned belt pulley automatic takeup hydraulic system, is characterized in that: described selector valve one and described selector valve three are bi-bit bi-pass solenoid directional control valve, and described selector valve two is 3-position 4-way solenoid directional control valve.
The utility model compared with prior art has the following advantages:
(1) this belt pulley automatic takeup is very reasonable by design of Hydraulic System, adopts mechanical, electrical, liquid integrated design, can realize self adaption tensioning, and adaptability and stability are strong, and automaticity is very high.
(2) this belt pulley automatic takeup is with being provided with pressure relay and accumulator in hydraulic system; pressure relay can automatically be controlled oil hydraulic pump according to the force value of hydraulic oil in accumulator and starts or shut down; thereby prevent the frequent starting of oil hydraulic pump, intelligent degree is high.
(3) this belt pulley automatic takeup, with being provided with electromagnetic proportional valve group in hydraulic system, can be controlled the oil-feed speed of oil hydraulic cylinder automatically, and system hydraulic shock is little, and greatly strengthen working life.
Below by drawings and Examples, the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is hydraulic control principle schematic of the present utility model.
Description of reference numerals:
1-fuel tank; 2-oil hydraulic pump; 3-one-way valve;
4-pressure relay; 5-accumulator; 6-selector valve one;
7-electromagnetic proportional valve group; 8-fixed pulley; 9-belt;
10-movable belt wheel; 11-oil hydraulic cylinder; 12-selector valve two.
13-selector valve three; 14-relief valve; 15-oil purifier.
Embodiment
A kind of belt pulley automatic takeup hydraulic system as shown in Figure 1, comprise for adjusting movable belt wheel 10 positions so that the belt 9 between fixed pulley 8 and movable belt wheel 10 reaches the oil hydraulic cylinder 11 of suitable tension force and provides the oil hydraulic pump 2 of high pressure liquid force feed for described oil hydraulic cylinder 11, also comprise the electromagnetic proportional valve group 7 for adjusting described oil hydraulic cylinder 11 oil-feed speed, for system storage high pressure liquid force feed is to prevent the accumulator 5 of described oil hydraulic pump 2 frequent startings and automatically to control according to the force value of described accumulator 5 interior hydraulic oil the pressure relay 4 that described oil hydraulic pump 2 starts or shuts down, described oil hydraulic pump 2 oil outlets are communicated with the A mouth of accumulator 5 and selector valve 2 12 respectively, the B mouth of described selector valve 2 12 is communicated with described oil hydraulic cylinder 11 rod chambers, described oil hydraulic cylinder 11 rodless cavities are communicated with the C mouth of described selector valve 2 12, the D mouth of described selector valve 2 12 is communicated with fuel tank 1, described oil hydraulic cylinder 11 rod chambers pass through successively described electromagnetic proportional valve group 7 and the selector valve 1 being connected in parallel and selector valve 3 13 and are communicated with the oil outlet of described oil hydraulic pump 2, and described pressure relay 4 is arranged on described accumulator 5 ports.
In the present embodiment, the oil outlet place of described oil hydraulic pump 2 is provided with one-way valve 3 and relief valve 14,, the inlet port place of described oil hydraulic pump 2 is provided with oil purifier 15.
In the present embodiment, described selector valve 1 and described selector valve 3 13 are bi-bit bi-pass solenoid directional control valve, and described selector valve 2 12 is 3-position 4-way solenoid directional control valve.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification, change and equivalent structure transformation of above embodiment being done according to the utility model technical spirit, all still belongs in the protection domain of technical solutions of the utility model.
Claims (3)
1. a belt pulley automatic takeup hydraulic system, comprise for adjusting movable belt wheel (10) position so that the belt (9) between fixed pulley (8) and movable belt wheel (10) reaches the oil hydraulic cylinder (11) of suitable tension force and is the oil hydraulic pump (2) that described oil hydraulic cylinder (11) provides high pressure liquid force feed, it is characterized in that: also comprise the electromagnetic proportional valve group (7) for adjusting described oil hydraulic cylinder (11) oil-feed speed, for system storage high pressure liquid force feed is to prevent the accumulator (5) of described oil hydraulic pump (2) frequent starting and automatically to control according to the force value of the interior hydraulic oil of described accumulator (5) pressure relay (4) that described oil hydraulic pump (2) starts or shuts down, described oil hydraulic pump (2) oil outlet is communicated with the first working port of accumulator (5) and selector valve two (12) respectively, the second working port of described selector valve two (12) is communicated with described oil hydraulic cylinder (11) rod chamber, described oil hydraulic cylinder (11) rodless cavity is communicated with the 3rd working port of described selector valve two (12), the 4th working port of described selector valve two (12) is communicated with fuel tank (1), described oil hydraulic cylinder (11) rod chamber passes through described electromagnetic proportional valve group (7) successively and the selector valve one (6) and the selector valve three (13) that are connected in parallel are communicated with the oil outlet of described oil hydraulic pump (2), described pressure relay (4) is arranged on described accumulator (5) port.
2. according to belt pulley automatic takeup hydraulic system claimed in claim 1, it is characterized in that: the oil outlet place of described oil hydraulic pump (2) is provided with one-way valve (3) and relief valve (14), and the inlet port place of described oil hydraulic pump (2) is provided with oil purifier (15).
3. according to belt pulley automatic takeup hydraulic system claimed in claim 1, it is characterized in that: described selector valve one (6) and described selector valve three (13) are bi-bit bi-pass solenoid directional control valve, described selector valve two (12) is 3-position 4-way solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320598788.1U CN203686021U (en) | 2013-09-26 | 2013-09-26 | Hydraulic system for automatic tensioning device of belt wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320598788.1U CN203686021U (en) | 2013-09-26 | 2013-09-26 | Hydraulic system for automatic tensioning device of belt wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686021U true CN203686021U (en) | 2014-07-02 |
Family
ID=51007928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320598788.1U Expired - Fee Related CN203686021U (en) | 2013-09-26 | 2013-09-26 | Hydraulic system for automatic tensioning device of belt wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203686021U (en) |
-
2013
- 2013-09-26 CN CN201320598788.1U patent/CN203686021U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20140926 |
|
| EXPY | Termination of patent right or utility model |