CN204591830U - For the decompressor of electric LHD power cable - Google Patents
For the decompressor of electric LHD power cable Download PDFInfo
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- CN204591830U CN204591830U CN201520123387.XU CN201520123387U CN204591830U CN 204591830 U CN204591830 U CN 204591830U CN 201520123387 U CN201520123387 U CN 201520123387U CN 204591830 U CN204591830 U CN 204591830U
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- cable
- reduction valve
- hydraulic motor
- oil
- valve
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Abstract
The utility model belongs to mechanical equipment technical field, especially a kind of decompressor for electric LHD power cable is related to, for the decompressor of electric LHD power cable, comprise the reduction valve I be located on oil circuit, the oil hydraulic motor that is connected of reduction valve I therewith, the one-way valve that is connected of oil hydraulic motor therewith, the oil sump tank that is connected of one-way valve therewith, it is characterized in that between reduction valve I and oil hydraulic motor, be also provided with a decompression reversing arrangement, this decompression reversing arrangement comprises the reduction valve II and oil pipe that are connected in parallel on reduction valve I rear end, be located at the solenoid directional control valve after reduction valve II and oil pipe, this solenoid directional control valve is connected with oil hydraulic motor, the decompressor structure of electric LHD power cable of the present utility model is simple, easy to operate, " telling cable " pressure can be reduced, thus the pulling force reduced cable, improve cable working life.
Description
Technical field
The utility model belongs to mechanical equipment technical field, especially relates to a kind of decompressor for electric LHD power cable.
Background technique
Electric LHD is when advancing, and power cable will pull out from cable drum, and the on-the-spot This move that usually claims is " telling cable "; When electric LHD retreats, power cable will be wound on reel, and the on-the-spot This move that usually claims is " take-up ".When scraper moves forward, cable is while being drawn out, and for ensureing that " telling cable " is steady, cable is still subject to the pulling force of oil hydraulic motor to it, otherwise reel can run and automatic rotation forward along with forklift, causes " telling cable " excessive, wayward; If pulling force is large, then cable is stressed for a long time, can cause certain fatigue ruption to cable.A reduction valve is adopted during existing oil circuit controls, that " take-up " or " telling cable " reduction valve is all in work, so that reduce pressure to decompression motor, oil hydraulic motor is made to be subject to stable pressure effect, oil hydraulic motor changes hydraulic coupling into peripheral force and passes to cable, makes power shovel take-up and tell cable to operate steadily.But the defect that this mode tells cable is: cable, when running forward, is always subject to the pulling force of oil hydraulic motor to it, the time one is long, just causes the conductor fatigue ruption in cable, causes cable secretly to break.
Summary of the invention
The purpose of this utility model is to provide one can reduce " telling cable " pressure, thus reduces the pulling force to cable, improves the decompressor for electric LHD power cable in cable working life.
The purpose of this utility model is realized by following technical proposals:
Decompressor for electric LHD power cable of the present utility model, comprise the reduction valve I be located on oil circuit, the oil hydraulic motor that is connected of reduction valve I therewith, the one-way valve that is connected of oil hydraulic motor therewith, the oil sump tank that is connected of one-way valve therewith, it is characterized in that also being provided with a decompression reversing arrangement between described reduction valve I and oil hydraulic motor, this decompression reversing arrangement comprises the reduction valve II and oil pipe that are connected in parallel on described reduction valve I rear end, be located at the solenoid directional control valve after described reduction valve II and oil pipe, this solenoid directional control valve is connected with described oil hydraulic motor.
Advantage of the present utility model:
The decompressor structure of electric LHD power cable of the present utility model is simple, easy to operate, can reduce " telling cable " pressure, thus reduces the pulling force to cable, improves cable working life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Embodiment of the present utility model is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, decompressor for electric LHD power cable of the present utility model, comprise the reduction valve I 1 be located on oil circuit, the oil hydraulic motor 2 that is connected of reduction valve I 1 therewith, the one-way valve 3 that is connected of oil hydraulic motor 2 therewith, the oil sump tank 4 that is connected of one-way valve 3 therewith, it is characterized in that also being provided with a decompression reversing arrangement between described reduction valve I 1 and oil hydraulic motor 2, this decompression reversing arrangement comprises the reduction valve II 6 and oil pipe 7 that are connected in parallel on described reduction valve I 1 rear end, be located at the solenoid directional control valve 5 after described reduction valve II 6 and oil pipe 7, this solenoid directional control valve 5 is connected with described oil hydraulic motor 2.
Working principle of the present utility model: when electric LHD travels take-up backward, be energized to solenoid directional control valve 5, B mouth and the P mouth of solenoid directional control valve 5 communicate, pressure oil enters reduction valve 1 by oil pipe 7, then by B mouth to P mouth, to oil hydraulic motor, make oil hydraulic motor action, this is original working state, and whole system is the set pressure of reduction valve 1, completes cable winding work.When scraper moves forward, solenoid directional control valve 5 no electric circuit, the B mouth of solenoid directional control valve is closed, and pressure oil to solenoid directional control valve A mouth, relies on the elastic force of spring by newly-increased reduction valve 6, A mouth and P mouth communicate, pressure oil is by A mouth to P mouth to oil hydraulic motor, and this is this new device working state, and now whole system is after the set pressure of reduction valve 1, again by the reduction pressure of reduction valve 6, complete cable work of " telling cable ".
The utility model passes through by having set up new reduction valve and solenoid directional control valve on the basis of original decompressor, when forklift advances " telling cable ", reduces the moment of torsion of hydraulic-pressure pump, reduces and draw effect to stretching of cable, thus extend the life-span of cable.
Claims (1)
1. the decompressor for electric LHD power cable, comprise the reduction valve I be located on oil circuit, the oil hydraulic motor that is connected of reduction valve I therewith, the one-way valve that is connected of oil hydraulic motor therewith, the oil sump tank that is connected of one-way valve therewith, it is characterized in that also being provided with a decompression reversing arrangement between described reduction valve I and oil hydraulic motor, this decompression reversing arrangement comprises the reduction valve II and oil pipe that are connected in parallel on described reduction valve I rear end, be located at the solenoid directional control valve after described reduction valve II and oil pipe, this solenoid directional control valve is connected with described oil hydraulic motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520123387.XU CN204591830U (en) | 2015-03-04 | 2015-03-04 | For the decompressor of electric LHD power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520123387.XU CN204591830U (en) | 2015-03-04 | 2015-03-04 | For the decompressor of electric LHD power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591830U true CN204591830U (en) | 2015-08-26 |
Family
ID=53927988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520123387.XU Active CN204591830U (en) | 2015-03-04 | 2015-03-04 | For the decompressor of electric LHD power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204591830U (en) |
-
2015
- 2015-03-04 CN CN201520123387.XU patent/CN204591830U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Angang Group Mine Company |