CN204239361U - A kind of hydraulic control system of mine truck - Google Patents
A kind of hydraulic control system of mine truck Download PDFInfo
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- CN204239361U CN204239361U CN201420543549.0U CN201420543549U CN204239361U CN 204239361 U CN204239361 U CN 204239361U CN 201420543549 U CN201420543549 U CN 201420543549U CN 204239361 U CN204239361 U CN 204239361U
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- oil outlet
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Abstract
The utility model relates to a kind of transport vehicle for underground job.Its objective is the hydraulic control system in order to provide a kind of structure is simple, heat yield is lower, working life is longer mine truck.The utility model has set up the first one-way valve and a bi-bit bi-pass hydraulicchange-over valve on the basis of existing technology; The filler opening of described working pump is connected with fuel tank; The oil outlet of described working pump is connected with the filler opening of bi-bit bi-pass hydraulicchange-over valve with the filler opening of the first one-way valve simultaneously; The described oil outlet of the first one-way valve is connected with the rodless cavity of lifting hydraulic cylinder; The return opening of described bi-bit bi-pass hydraulicchange-over valve is connected with fuel tank; The control mouth of described bi-bit bi-pass hydraulicchange-over valve is connected with the second oil outlet of described pilot-actuated valve.
Description
Technical field
The utility model relates to a kind of conveying arrangement, particularly relates to a kind of transport vehicle for underground job.
Background technique
Along with global mine cause development and science and technology progress, underground trackless equipment achieves significant progress, especially in recent years, along with the raising of mining technical merit and the increasing of the market demand, underground carry scraper and fortune ore deposit, underground truck applications more extensive.
At present, underground vehicle substantially all adopts all-hydraulic power to realize turning to of automobile and operation, is illustrated in figure 1 existing mine truck hydraulic schematic diagram.Existing underground mining truck, many employings preferentially turn to, the hydraulic control system of Dual-pump flow-converging during work.Current use system mainly comprises steering pump 21, working pump 22, pressure-gradient control valve 23, commutator 24, hydraulic steering cylinder 25, lifting hydraulic cylinder 26, one-way throttle valve 27, operating valve 28, work pilot-actuated valve 29, controls oil sources valve 20.Lifting hydraulic cylinder 26 is for realizing lifting and the whereabouts in compartment.One-way throttle valve 27, for controlling the falling speed of railway carriage, causes violent shock because rate of descent is too fast to vehicle frame to avoid compartment.When turning to, the pressure oil of steering pump 21 enters commutator by the CF mouth of pressure-gradient control valve 23, and then drives hydraulic steering cylinder, realizes turning to of vehicle.During work, the pressure oil that steering pump 21 exports, by the EF mouth of pressure-gradient control valve 23, after the pressure oil exported collaborates, enters work system with working pump 22; When not working, the pressure oil behind interflow, by the meta oil duct of operating valve 28, gets back to fuel tank.
Existing ore deposit is got on the car owing to using above-mentioned hydraulic principle to realize turning to of automobile and operation function, there are two defects: one when operation, when carriage lifting, decline, flow system flow is identical, must reduce the speed of compartment decline by increasing one-way throttle valve, and the introducing of one-way throttle valve will inevitably cause a large amount of heatings; Its two due to Off-highway Truck Tonnage larger, realize all needing a large amount of hydraulic oil to flow through operating valve when compartment rising or declines, in order to reduce the heat that operating valve produces, the operating valve of more big orifice can only be adopted, so just improve the cost of production of mine truck.
Model utility content
The technical problems to be solved in the utility model is to provide the hydraulic control system of the mine truck that a kind of structure is simple, heat yield is lower, working life is longer.
The hydraulic control system of a kind of mine truck of the utility model, comprising: fuel tank, steering pump, working pump, pressure-gradient control valve, commutator, hydraulic steering cylinder, lifting hydraulic cylinder, operating valve, control oil sources valve, pilot-actuated valve;
The filler opening of described steering pump is connected with fuel tank; The oil outlet of described steering pump is connected with the oil inlet P mouth of pressure-gradient control valve; The oil outlet CF mouth of described pressure-gradient control valve is connected with the oil inlet P mouth of commutator; The oil outlet L mouth of described commutator is connected with two chambers of hydraulic steering cylinder respectively with R mouth; The oil return inlet T mouth of described commutator is connected with fuel tank;
The oil outlet EF mouth of described pressure-gradient control valve is connected with the oil inlet P mouth of operating valve; The oil outlet A mouth of described operating valve is connected with the rod chamber of lifting hydraulic cylinder; The oil outlet B mouth of described operating valve is connected with the rodless cavity of lifting hydraulic cylinder; The oil return inlet T mouth of described operating valve is connected with fuel tank;
The oil inlet P mouth of described control oil sources valve is connected with the oil outlet of steering pump; The oil outlet Pv mouth of described control oil sources valve is connected with the oil inlet P mouth of pilot-actuated valve; The oil return inlet T mouth of described control oil sources valve is connected with fuel tank; First oil outlet of described pilot-actuated valve is connected with the left control mouth k1 mouth of operating valve; Second oil outlet of described pilot-actuated valve is connected with the right control mouth k2 mouth of operating valve;
Also comprise the first one-way valve and a bi-bit bi-pass hydraulicchange-over valve;
The filler opening of described working pump is connected with fuel tank; The oil outlet of described working pump is connected with the filler opening of bi-bit bi-pass hydraulicchange-over valve with the filler opening of the first one-way valve simultaneously; The described oil outlet of the first one-way valve is connected with the rodless cavity of lifting hydraulic cylinder; The return opening of described bi-bit bi-pass hydraulicchange-over valve is connected with fuel tank; The control mouth of described bi-bit bi-pass hydraulicchange-over valve is connected with the second oil outlet of described pilot-actuated valve.
The hydraulic control system of a kind of mine truck of the utility model, is wherein in series with a filter between described steering pump and fuel tank; A filter is in series with between described working pump and fuel tank.
The hydraulic control system of a kind of mine truck of the utility model, wherein said first one-way valve and bi-bit bi-pass hydraulicchange-over valve are loaded on an integrated bulk.
The hydraulic control system of a kind of mine truck of the utility model, wherein said pilot-actuated valve comprises the first hand control valve and the second hand control valve, and the filler opening of described each hand control valve is all connected with the oil inlet P mouth of pilot-actuated valve; The return opening of described each hand control valve is connected with the oil return inlet T mouth of pilot-actuated valve; The oil outlet of described first hand control valve is connected with the first oil outlet of pilot-actuated valve; The oil outlet of described second hand control valve is connected with the second oil outlet of pilot-actuated valve.
The hydraulic control system of a kind of mine truck of the utility model, wherein said operating valve comprises one three six logical hydraulicchange-over valve, the second one-way valve and relief valves; First, second filler opening of described three six logical hydraulicchange-over valves is all connected with the oil inlet P mouth of operating valve; Second, third oil outlet of described three six logical hydraulicchange-over valves is connected with oil outlet B mouth with the oil outlet A mouth of operating valve respectively; First oil outlet, the return opening of described three six logical hydraulicchange-over valves are all connected with the oil return inlet T mouth of operating valve; Described second one-way valve is series between the second filler opening of described operating valve P mouth and three six logical hydraulicchange-over valves; The filler opening of described relief valve is connected with the oil inlet P mouth of operating valve, and the oil outlet of relief valve is connected with the oil return inlet T mouth of operating valve; Described three the six logical left control mouths of hydraulicchange-over valve are connected with the left control mouth k1 mouth of operating valve; The right control mouth of described three six logical hydraulicchange-over valves is connected with the k2 mouth of operating valve.
The hydraulic control system difference from prior art of a kind of mine truck of the utility model is that the hydraulic control system of a kind of mine truck of the utility model is when controlling carriage lifting, bi-bit bi-pass hydraulicchange-over valve is closed, the pressure oil of working pump directly enters the rodless cavity of load lifting cylinder, the pressure oil of steering pump also finally enters into the rodless cavity of lifting hydraulic cylinder successively by pressure-gradient control valve, operating valve, compartment is by quick lifting.The hydraulic control system of a kind of mine truck of the utility model is when controlling compartment and falling, and bi-bit bi-pass hydraulicchange-over valve is opened, working pump off-load, and the pressure oil of steering pump enters the rod chamber of load lifting cylinder by pressure-gradient control valve, operating valve, and compartment falls slowly.Due to the power now only having steering pump to provide compartment to decline, thus the fluid flow flowing through operating valve is less, and overheated problem can not occur operating valve, thus operating valve only need adopt the operating valve of common latus rectum, provide cost savings, and extend the working life of operating valve.The utility model reduces the use of one-way overflow valve in addition, makes in the hydraulic control system structure of a kind of mine truck of the utility model simpler.
Be described further below in conjunction with the hydraulic control system of accompanying drawing to a kind of mine truck of the utility model.
Accompanying drawing explanation
Fig. 1 is the hydraulic control system schematic diagram that existing mine truck uses;
Fig. 2 is the schematic diagram of the hydraulic control system of a kind of mine truck of the utility model.
Embodiment
As shown in Figure 2, the hydraulic control system of a kind of mine truck of the utility model, comprising: fuel tank 1, steering pump 2, working pump 3, pressure-gradient control valve 4, commutator 5, hydraulic steering cylinder 6, lifting hydraulic cylinder 7, operating valve 8, control oil sources valve 10, pilot-actuated valve 9;
Wherein pilot-actuated valve 9 comprises the first hand control valve 91 and the second hand control valve 92, and the filler opening of each hand control valve is all connected with the oil inlet P mouth of pilot-actuated valve 9; The return opening of each hand control valve is connected with the oil return inlet T mouth of pilot-actuated valve 9; The oil outlet of the first hand control valve 91 is connected with the first oil outlet of pilot-actuated valve 9; The oil outlet of the second hand control valve 92 is connected with the second oil outlet of pilot-actuated valve 9.
Operating valve 8 comprises logical hydraulicchange-over valve 81, second one-way valve 82 of three six of being loaded on integrated bulk and relief valve 83; First, second filler opening of three six logical hydraulicchange-over valves 81 is all connected with the oil inlet P mouth of operating valve 8; Second, third oil outlet of three six logical hydraulicchange-over valves 81 is connected with oil outlet B mouth with the oil outlet A mouth of operating valve 8 respectively; First oil outlet, the return opening of three six logical hydraulicchange-over valves 81 are all connected with the oil return inlet T mouth of operating valve 8; Second one-way valve 82 is series between the oil inlet P mouth of operating valve 8 and the second filler opening of three six logical hydraulicchange-over valves 81; The filler opening of relief valve 83 is connected with the oil inlet P mouth of operating valve 8, and the oil outlet of relief valve 83 is connected with the oil return inlet T mouth of operating valve 8; Three the six logical left control mouths of hydraulicchange-over valve 81 are connected with the left control mouth k1 mouth of operating valve 8; Three the six logical right control mouths of hydraulicchange-over valve 81 are connected with the right control mouth k2 mouth of operating valve 8.
In the utility model, the filler opening of steering pump 2 is connected with fuel tank 1 by a filter; The oil outlet of steering pump 2 is connected with the oil inlet P mouth of pressure-gradient control valve 4; The oil outlet CF mouth of pressure-gradient control valve 4 is connected with the oil inlet P mouth of commutator 5; The oil outlet L mouth of commutator 5 is connected with two chambers of hydraulic steering cylinder 6 respectively with R mouth; The oil return inlet T mouth of commutator is connected with fuel tank 1;
The oil outlet EF mouth of pressure-gradient control valve 4 is connected with the oil inlet P mouth of operating valve 8; The oil outlet A mouth of operating valve 8 is connected with the rod chamber of lifting hydraulic cylinder 7; The oil outlet B mouth of operating valve 8 is connected with the rodless cavity of lifting hydraulic cylinder 7; The oil return inlet T mouth of operating valve 8 is connected with fuel tank 1;
The oil inlet P mouth controlling oil sources valve 10 is connected with the oil outlet of steering pump 2; The oil outlet Pv mouth controlling oil sources valve 10 is connected with the oil inlet P mouth of pilot-actuated valve 9; The oil return inlet T mouth controlling oil sources valve 10 is connected with fuel tank 1; First oil outlet of pilot-actuated valve 9 is connected with the left control mouth k1 mouth of operating valve 8; Second oil outlet of pilot-actuated valve 9 is connected with the right control mouth k2 mouth of operating valve 8;
Also comprise a converging valve group, converging valve group is made up of the first one-way valve 12 be loaded on integrated bulk and bi-bit bi-pass hydraulicchange-over valve 11.
The filler opening of working pump 3 is connected with fuel tank 1 by a filter; The oil outlet of working pump 3 is connected with the filler opening of bi-bit bi-pass hydraulicchange-over valve 11 with the filler opening of the first one-way valve 12 simultaneously; The oil outlet of the first one-way valve 12 is connected with the rodless cavity of lifting hydraulic cylinder 7; The return opening of bi-bit bi-pass hydraulicchange-over valve 11 is connected with fuel tank 1; The control mouth of bi-bit bi-pass hydraulicchange-over valve 11 is connected with the second oil outlet of pilot-actuated valve 9.
The working principle of the hydraulic control system of a kind of mine truck of the utility model is as follows:
First steering pump 2 preferentially provides hydraulic oil to steering hydraulic oil cylinder 6 by pressure-gradient control valve 4, commutator 5 successively, turns to operation with what realize automobile.
Then under the control of pilot-actuated valve 9, bi-bit bi-pass hydraulicchange-over valve 11 is closed, when the spool of three six-way transfer valves is moved to the left high order end, the second filler opening of three six logical hydraulicchange-over valves 81 is communicated with the 3rd oil outlet, and return opening is communicated with the second oil outlet; The pressure oil that now steering pump 2 provides enters into the rodless cavity of lifting hydraulic cylinder 7 by pressure-gradient control valve 4, operating valve 8, realize the lifting in compartment fast.
Under the control of pilot-actuated valve 9, bi-bit bi-pass hydraulicchange-over valve 11 is opened, and when the spool of three six-way transfer valves moves right to low order end, the second filler opening of three six logical hydraulicchange-over valves 81 is communicated with the second oil outlet, and return opening is communicated with the 3rd oil outlet; Now working pump 3 is unloaded by bi-bit bi-pass hydraulicchange-over valve 11, the pressure oil that steering pump 2 provides flows into the rod chamber of lifting hydraulic cylinder 7 through pressure-gradient control valve 4, operating valve 8, hydraulic oil in lifting hydraulic cylinder 7 in rodless cavity is back to fuel tank 1 through operating valve 8, and compartment declines slowly.Due to the power now only having steering pump 2 to provide compartment to decline, thus the fluid flow flowing through operating valve 8 is less, and overheated problem can not occur operating valve 8, thus operating valve 8 need adopt the operating valve 8 of common latus rectum, provide cost savings, and extend the working life of operating valve 8.The utility model reduces the use of one-way overflow valve in addition, makes in the hydraulic control system structure of a kind of mine truck of the utility model simpler.
Above-described embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (5)
1. a hydraulic control system for mine truck, comprising: fuel tank, steering pump, working pump, pressure-gradient control valve, commutator, hydraulic steering cylinder, lifting hydraulic cylinder, operating valve, control oil sources valve, pilot-actuated valve;
The filler opening of described steering pump is connected with fuel tank; The oil outlet of described steering pump is connected with the oil inlet P mouth of pressure-gradient control valve; The oil outlet CF mouth of described pressure-gradient control valve is connected with the oil inlet P mouth of commutator; The oil outlet L mouth of described commutator is connected with two chambers of hydraulic steering cylinder respectively with R mouth; The oil return inlet T mouth of described commutator is connected with fuel tank;
The oil outlet EF mouth of described pressure-gradient control valve is connected with the oil inlet P mouth of operating valve; The oil outlet A mouth of described operating valve is connected with the rod chamber of lifting hydraulic cylinder; The oil outlet B mouth of described operating valve is connected with the rodless cavity of lifting hydraulic cylinder; The oil return inlet T mouth of described operating valve is connected with fuel tank;
The oil inlet P mouth of described control oil sources valve is connected with the oil outlet of steering pump; The oil outlet Pv mouth of described control oil sources valve is connected with the oil inlet P mouth of pilot-actuated valve; The oil return inlet T mouth of described control oil sources valve is connected with fuel tank; First oil outlet of described pilot-actuated valve is connected with the left control mouth k1 mouth of operating valve; Second oil outlet of described pilot-actuated valve is connected with the right control mouth k2 mouth of operating valve;
It is characterized in that: also comprise the first one-way valve and a bi-bit bi-pass hydraulicchange-over valve;
The filler opening of described working pump is connected with fuel tank; The oil outlet of described working pump is connected with the filler opening of bi-bit bi-pass hydraulicchange-over valve with the filler opening of the first one-way valve simultaneously; The described oil outlet of the first one-way valve is connected with the rodless cavity of lifting hydraulic cylinder; The return opening of described bi-bit bi-pass hydraulicchange-over valve is connected with fuel tank; The control mouth of described bi-bit bi-pass hydraulicchange-over valve is connected with the second oil outlet of described pilot-actuated valve.
2. the hydraulic control system of a kind of mine truck according to claim 1, is characterized in that: between described steering pump and fuel tank, be in series with a filter; A filter is in series with between described working pump and fuel tank.
3. the hydraulic control system of a kind of mine truck according to claim 1, is characterized in that: described first one-way valve and bi-bit bi-pass hydraulicchange-over valve are loaded on an integrated bulk.
4. the hydraulic control system of a kind of mine truck according to claim 1, is characterized in that: described pilot-actuated valve comprises the first hand control valve and the second hand control valve, and the filler opening of described each hand control valve is all connected with the oil inlet P mouth of pilot-actuated valve; The return opening of described each hand control valve is connected with the oil return inlet T mouth of pilot-actuated valve; The oil outlet of described first hand control valve is connected with the first oil outlet of pilot-actuated valve; The oil outlet of described second hand control valve is connected with the second oil outlet of pilot-actuated valve.
5. the hydraulic control system of a kind of mine truck according to claim 1, is characterized in that: described operating valve comprises one three six logical hydraulicchange-over valve, the second one-way valve and relief valves; First, second filler opening of described three six logical hydraulicchange-over valves is all connected with the oil inlet P mouth of operating valve; Second, third oil outlet of described three six logical hydraulicchange-over valves is connected with oil outlet B mouth with the oil outlet A mouth of operating valve respectively; First oil outlet, the return opening of described three six logical hydraulicchange-over valves are all connected with the oil return inlet T mouth of operating valve; Described second one-way valve is series between the second filler opening of described operating valve P mouth and three six logical hydraulicchange-over valves; The filler opening of described relief valve is connected with the oil inlet P mouth of operating valve, and the oil outlet of relief valve is connected with the oil return inlet T mouth of operating valve; Described three the six logical left control mouths of hydraulicchange-over valve are connected with the left control mouth k1 mouth of operating valve; The right control mouth of described three six logical hydraulicchange-over valves is connected with the k2 mouth of operating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543549.0U CN204239361U (en) | 2014-09-19 | 2014-09-19 | A kind of hydraulic control system of mine truck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543549.0U CN204239361U (en) | 2014-09-19 | 2014-09-19 | A kind of hydraulic control system of mine truck |
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| Publication Number | Publication Date |
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| CN204239361U true CN204239361U (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420543549.0U Expired - Fee Related CN204239361U (en) | 2014-09-19 | 2014-09-19 | A kind of hydraulic control system of mine truck |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738337A (en) * | 2022-04-26 | 2022-07-12 | 三一重型装备有限公司 | Hydraulic control system and working machine |
-
2014
- 2014-09-19 CN CN201420543549.0U patent/CN204239361U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738337A (en) * | 2022-04-26 | 2022-07-12 | 三一重型装备有限公司 | Hydraulic control system and working machine |
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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: 20150401 Termination date: 20190919 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |