CN204175710U - Hydraulically powered hydraulic system is carried out for coal-feeding conveyer - Google Patents
Hydraulically powered hydraulic system is carried out for coal-feeding conveyer Download PDFInfo
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- CN204175710U CN204175710U CN201420614719.XU CN201420614719U CN204175710U CN 204175710 U CN204175710 U CN 204175710U CN 201420614719 U CN201420614719 U CN 201420614719U CN 204175710 U CN204175710 U CN 204175710U
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- hydraulic pump
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- pressure hydraulic
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Abstract
The utility model discloses one and carry out hydraulically powered hydraulic system for coal-feeding conveyer, it contains a high-pressure hydraulic pump and a low-pressure hydraulic pump, the liquid inlet pipe of two oil hydraulic pumps is communicated with hydraulic medium case, the drain pipe of two oil hydraulic pumps is connected with separately an one-way valve, the media port that goes out of two one-way valves is combined and is communicated with hydraulic actuator by position control valve, and on the drain pipe of described high-pressure hydraulic pump and low-pressure hydraulic pump, serial connection one controls the relief valve of respective Maximum operating pressure separately.Described high-pressure hydraulic pump and low-pressure hydraulic pump on an axis in tandem, and adopt a drive motor to carry out synchronized driving.The utility model is reasonable in design, structure is simple, energy consumption is low, and it is applied widely, is easy to promotion and implementation.
Description
Technical field
The utility model relates to a kind of hydraulic control system, particularly relates to one and carries out hydraulically powered hydraulic system for coal-feeding conveyer.
Background technique
Hydraulic pressure coal-feeding conveyer adopts hydraulic system coal-feeding conveyer associated hydraulic oil cylinder to be driven to the coal supply action of coal-feeding conveyer.The working method of oil hydraulic cylinder generally has two kinds, one is that piston rod culminates from reaching, piston rod is applied thrust always, push the work forward member motion, another kind is piston rod not applied thrust or apply very little power when just stretching out, but idle stroke be no-load running substantially, ability applied thrust when reaching certain position, push the work forward member motion, and the stroke simultaneously moved under stress condition is very short.Two kinds of working methods are different to the requirement of hydraulic control system, and the first working method all needs the hydraulic system that thrust is large always; The second working method should thrust is little, flow is large hydraulic system, the hydraulic system that thrust is large again, flow is little, but, in order to simplified structure, people often take a kind of hydraulic system for the second working method, make oil hydraulic cylinder be in the working state of low-speed high-thrust always, so just cause energy waste, and affect working efficiency.
Model utility content
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, provide a kind of reasonable in design, energy consumption is low and working efficiency is high carries out hydraulically powered hydraulic system for coal-feeding conveyer.
The technical solution of the utility model: a kind of coal-feeding conveyer that is used for carries out hydraulically powered hydraulic system, containing a high-pressure hydraulic pump and a low-pressure hydraulic pump, the liquid inlet pipe of two oil hydraulic pumps is communicated with hydraulic medium case, the drain pipe of two oil hydraulic pumps is connected with separately an one-way valve, the media port that goes out of two one-way valves is combined and is communicated with hydraulic actuator by position control valve, it is characterized in that: on the drain pipe of described high-pressure hydraulic pump and low-pressure hydraulic pump, serial connection one controls the relief valve of respective Maximum operating pressure separately.
Described high-pressure hydraulic pump and low-pressure hydraulic pump on an axis in tandem, and adopt a drive motor to carry out synchronized driving.
A stop valve is serially connected with between described high-pressure hydraulic pump outlet end and hydraulic medium case, this stop valve can be in logical and disconnected two states respectively, or, a bi-bit bi-pass position control valve is serially connected with between described high-pressure hydraulic pump outlet end and hydraulic medium case, the home position of this bi-bit bi-pass position control valve, for often to open, is closed state after commutation.
Described high-pressure hydraulic pump is communicated with respective hydraulic medium case respectively with the liquid inlet pipe of low-pressure hydraulic pump, and the hydraulic medium returned by hydraulic actuator all enters in the hydraulic medium case of low-pressure hydraulic pump.
The hydraulic medium of described high-pressure hydraulic pump be moisture lower than 50% water in oil oil emulsion, the hydraulic medium of described low-pressure hydraulic pump be moisture higher than 80% oil-in-water emulsified liquid.
Described high-pressure hydraulic pump is communicated with same hydraulic medium case with the liquid inlet pipe of low-pressure hydraulic pump, and the hydraulic medium returned by hydraulic actuator all returns in this hydraulic medium case.
The hydraulic medium of described high-pressure hydraulic pump and low-pressure hydraulic pump be water content 35 ~ 95% emulsified liquid.
Position control valve and the described bi-bit bi-pass position control valve of described hydraulic actuator are hand-operated direction valve.
The beneficial effects of the utility model:
1, the utility model possesses high-pressure low-flow hydraulic feed system and low pressure and mass flow hydraulic feed system simultaneously, so just achieve early stage in the fast feed of low load-up condition lower piston rod, improve working efficiency, now low pressure and mass flow pump work, high-pressure low-flow pump is under the bi-bit bi-pass normally open valve often opened or the effect of stop valve, hydraulic medium directly flows back to medium box by high-pressure service pump, substantially not consumed power.And the effect of one-way valve due to high pressure pump outlet end, the hydraulic medium of low pressure and mass flow pump also cannot be back in the medium box of high-pressure service pump.When running into large load, because the underpressure of low pressure pump is to overcome load resistance, cylinder piston rod stop motion, the relief valve of low pressure pump works, and hydraulic medium flows back to its medium box by relief valve, and protection low pressure pump is not damaged.Now open the commutation of bi-bit bi-pass selector valve; or stop valve is closed; high pressure is produced at high pressure pump outlet end; open the one-way valve of its outlet end; high-pressure medium enters in oil hydraulic cylinder, and promote piston rod and continue motion, now the one-way valve of low pressure pump outlet end works; ensure that high-pressure medium does not enter in low pressure pump, protection low pressure pump is not damaged.Although now have employed double pump system work, because the flow of high-pressure service pump is very little, therefore power consumption is still very low, reaches the object of saving the energy.When the pressure that induced pressure sets higher than overflow valve of high-pressure pump, relief valve works, and system pressure cannot raise further, protects the safe handling of whole device.High-pressure low-flow pump work, later stage piston rod low-speed high-thrust feeding, improves thrust, reaches the propelling effect of expection, and two kinds of hydraulic systems are arranged simultaneously has saved the energy.
2, the relief valve going out the respective Maximum operating pressure of serial connection one control separately in medium tube of the utility model high-pressure hydraulic pump and low-pressure hydraulic pump, improve the safety in utilization of whole system, simultaneously because two relief valves all can carry out pressure adjusting, when therefore can work according to equipment, load variations situation carries out control and optimize to high low pressure, reduces equipment power dissipation further.
3, be serially connected with a stop valve or bi-bit bi-pass position control valve between the utility model high-pressure hydraulic pump outlet end and hydraulic medium case, can control the break-make of high-pressure hydraulic pump at any time, easy and simple to handle, it is convenient to control.
4, the utility model high-pressure hydraulic pump and low-pressure hydraulic pump on an axis in tandem, and adopt a drive motor to carry out synchronized driving, compact structure is simple, is convenient to control rotating speed.
5, the utility model high-pressure hydraulic pump can be communicated with respective hydraulic medium case respectively with low-pressure hydraulic pump, also can share a hydraulic medium case, convenient enforcement.Particularly need explosion-proof application as underground coal mine at some, adopt emulsifiable solution medium, this system easy to use and flexible under the condition of low power consumption, applicability is strong.
6, when share a set of medium box, bi-bit bi-pass selector valve or stop valve are in logical position always, prevent system load occur beyond thought change time system pressure raise damage equipment suddenly.Now whether the work of high pressure pump system is by manual control, only just produces high pressure when system needs high pressure, by the working condition of equipment under manual observation high pressure operations, can ensure the Security that equipment runs and operability simultaneously.
6, the utility model is reasonable in design, structure is simple, energy consumption is low, and it is applied widely, is easy to promotion and implementation, good in economic efficiency.
Accompanying drawing explanation
Fig. 1 is the schematic diagram carrying out hydraulically powered hydraulic system for coal-feeding conveyer.
Embodiment
Embodiment one: see in Fig. 1, figure, the hydraulic medium case of 1-low-pressure hydraulic pump, 2-drive motor, 3-low-pressure hydraulic pump, 4-low pressure relief valve, 5-one-way valve, 6-two-position four way change valve, 7-hydraulic lock, 8-hydraulic actuator, the hydraulic medium case of 9-high-pressure hydraulic pump, 10-high-pressure hydraulic pump, 11-bi-bit bi-pass position control valve, 12-high-pressure overflow valve, 13-stop valve, 14-pressure gauge.
Carry out hydraulically powered hydraulic system for coal-feeding conveyer and contain a high-pressure hydraulic pump 10 and a low-pressure hydraulic pump 3, high-pressure hydraulic pump 10 and low-pressure hydraulic pump 3 on an axis in tandem, and adopt a drive motor 2 to carry out synchronized driving.High-pressure hydraulic pump 10 is communicated with the hydraulic medium case 1 of low-pressure hydraulic pump with the hydraulic medium case 9 of high-pressure hydraulic pump respectively with the liquid inlet pipe of low-pressure hydraulic pump 3, the drain pipe of two oil hydraulic pumps is connected with separately an one-way valve 5, the media port that goes out of two one-way valves 5 combines and is communicated with (as required by two-position four way change valve 6 with hydraulic actuator 8, a hydraulic lock 7 can be connected in series) between two-position four way change valve 6 with hydraulic actuator 8, the hydraulic medium returned by hydraulic actuator 8 all enters in the hydraulic medium case 1 of low-pressure hydraulic pump, on the drain pipe of high-pressure hydraulic pump 10 and low-pressure hydraulic pump 3, serial connection one controls high-pressure overflow valve 12 and the low pressure relief valve 4 of respective Maximum operating pressure separately.
Be serially connected with a bi-bit bi-pass position control valve 11 between the hydraulic medium case 9 of high-pressure hydraulic pump 10 outlet end and high-pressure hydraulic pump, the home position of this bi-bit bi-pass position control valve 11, for often to open, is closed state after commutation.Certainly, as required, also can be serially connected with a stop valve between high-pressure hydraulic pump 10 outlet end and the hydraulic medium case 9 of high-pressure hydraulic pump, this stop valve can be in logical and disconnected two states respectively, is used for controlling high-pressure hydraulic pump 10.
The hydraulic medium of high-pressure hydraulic pump 10 be moisture lower than 40% water in oil oil emulsion, the hydraulic medium of low-pressure hydraulic pump 3 be moisture higher than 90% oil-in-water emulsified liquid.The position control valve (two-position four way change valve 6) of hydraulic actuator 8 and bi-bit bi-pass position control valve 11 are hand-operated direction valve.
During use, start drive motor 2, high-pressure hydraulic pump 10 and low-pressure hydraulic pump 3 are rotated, hydraulic actuator 8 is advanced at a high speed under little loading condition, realizes high pressure low cruise in heavy load situation by control hand-operated direction valve or stop valve.Hydraulic actuator 8 can be various types of oil hydraulic cylinder or oil hydraulic motor.
Embodiment two: the present embodiment is substantially identical with embodiment one, something in common does not repeat, difference is: high-pressure hydraulic pump is communicated with same hydraulic medium case with the liquid inlet pipe of low-pressure hydraulic pump, and the hydraulic medium returned by hydraulic actuator all returns in this hydraulic medium case.The hydraulic medium of high-pressure hydraulic pump and low-pressure hydraulic pump be water content 35 ~ 95% emulsified liquid.
Change the concrete form of position control valve, the particular type of change hydraulic actuator and the Placement of change high-pressure hydraulic pump and low-pressure hydraulic pump and drive motor and can form multiple embodiment, be common change of the present utility model, do not describe in detail one by one at this.
Claims (8)
1. one kind is carried out hydraulically powered hydraulic system for coal-feeding conveyer, containing a high-pressure hydraulic pump and a low-pressure hydraulic pump, the liquid inlet pipe of two oil hydraulic pumps is communicated with hydraulic medium case, the drain pipe of two oil hydraulic pumps is connected with separately an one-way valve, the media port that goes out of two one-way valves is combined and is communicated with hydraulic actuator by position control valve, it is characterized in that: on the drain pipe of described high-pressure hydraulic pump and low-pressure hydraulic pump, serial connection one controls the relief valve of respective Maximum operating pressure separately.
2. according to claim 1ly carry out hydraulically powered hydraulic system for coal-feeding conveyer, it is characterized in that: described high-pressure hydraulic pump and low-pressure hydraulic pump on an axis in tandem, and adopt a drive motor to carry out synchronized driving.
3. according to claim 2ly carry out hydraulically powered hydraulic system for coal-feeding conveyer, it is characterized in that: between described high-pressure hydraulic pump outlet end and hydraulic medium case, be serially connected with a stop valve, this stop valve can be in logical and disconnected two states respectively, or, a bi-bit bi-pass position control valve is serially connected with between described high-pressure hydraulic pump outlet end and hydraulic medium case, the home position of this bi-bit bi-pass position control valve, for often to open, is closed state after commutation.
4. according to any one of claim 1-3, carry out hydraulically powered hydraulic system for coal-feeding conveyer, it is characterized in that: described high-pressure hydraulic pump is communicated with respective hydraulic medium case respectively with the liquid inlet pipe of low-pressure hydraulic pump, and the hydraulic medium returned by hydraulic actuator all enters in the hydraulic medium case of low-pressure hydraulic pump.
5. according to claim 4ly carry out hydraulically powered hydraulic system for coal-feeding conveyer, it is characterized in that: the hydraulic medium of described high-pressure hydraulic pump be moisture lower than 50% water in oil oil emulsion, the hydraulic medium of described low-pressure hydraulic pump be moisture higher than 80% oil-in-water emulsified liquid.
6. described carry out hydraulically powered hydraulic system for coal-feeding conveyer according to claim 1-3 is arbitrary, it is characterized in that: described high-pressure hydraulic pump is communicated with same hydraulic medium case with the liquid inlet pipe of low-pressure hydraulic pump, and the hydraulic medium returned by hydraulic actuator all returns in this hydraulic medium case.
7. according to claim 6ly carry out hydraulically powered hydraulic system for coal-feeding conveyer, it is characterized in that: the hydraulic medium of described high-pressure hydraulic pump and low-pressure hydraulic pump be water content 35 ~ 95% emulsified liquid.
8. according to claim 3ly carry out hydraulically powered hydraulic system for coal-feeding conveyer, it is characterized in that: position control valve and the described bi-bit bi-pass position control valve of described hydraulic actuator are hand-operated direction valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420614719.XU CN204175710U (en) | 2014-10-23 | 2014-10-23 | Hydraulically powered hydraulic system is carried out for coal-feeding conveyer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420614719.XU CN204175710U (en) | 2014-10-23 | 2014-10-23 | Hydraulically powered hydraulic system is carried out for coal-feeding conveyer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175710U true CN204175710U (en) | 2015-02-25 |
Family
ID=52564521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420614719.XU Expired - Fee Related CN204175710U (en) | 2014-10-23 | 2014-10-23 | Hydraulically powered hydraulic system is carried out for coal-feeding conveyer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175710U (en) |
-
2014
- 2014-10-23 CN CN201420614719.XU patent/CN204175710U/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: 20150225 Termination date: 20151023 |
|
| EXPY | Termination of patent right or utility model |