CN204127001U - The all-hydraulic control hydraulic system of pump of mining wet sprayer - Google Patents
The all-hydraulic control hydraulic system of pump of mining wet sprayer Download PDFInfo
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- CN204127001U CN204127001U CN201420421424.0U CN201420421424U CN204127001U CN 204127001 U CN204127001 U CN 204127001U CN 201420421424 U CN201420421424 U CN 201420421424U CN 204127001 U CN204127001 U CN 204127001U
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Abstract
The utility model discloses the all-hydraulic control hydraulic system of pump of a kind of mining wet sprayer, adopt concrete cylinder pumping system and S valve tilt cylinder system individually feed flow, when concrete cylinder pumping system normally works, constant output pump (2) is operated in maximum pump discharge, the discharge capacity of constant pressure pump (3) is minimum, and the power of motor (1) mates with constant output pump (2); When concrete cylinder arrives stroke end, S valve tilt cylinder pilot operated directional control valve (15) commutates, constant output pump (2) discharge capacity is minimum, and constant pressure pump (3) discharge capacity is maximum, and the power of motor (1) mates with constant pressure pump (3), the quick end of run of S valve tilt cylinder, pressure raises, and constant pressure pump (3) discharge capacity is minimum, and master cylinder pilot operated directional control valve (9) and pilot operated directional control valve (6) all commutate, constant output pump (2) is operated in maximum pump discharge, concrete cylinder system starts.The utility model achieves the Auto-matching of motor power (output) and concrete cylinder pumping system and S valve tilt cylinder system acting, reduces complete machine power.
Description
Technical field
The utility model relates to mining wet-spraying machine, specifically relates to the all-hydraulic control hydraulic system of pump of a kind of mining wet sprayer.
Background technique
In underground coal mine concreting machinery product, wet-spraying machine be a kind of can by the concrete ejection that the is stirred machinery to working surface, its pumping system has full hydraulic control and electrichydraulic control, its working principle provides fluid to pumping system and S valve distribution system by oil hydraulic pump, when oil cylinder runs to terminal, commutated by hydraulic control valve and realize final controlling element to-and-fro motion.Oil cylinder commutation signal is a kind of is produced by the pressure oil of stroke end, and a kind of is produced by the sensor of position, stroke end.
Mining wet-spraying machine is owing to being subject to the narrow and small impact of area of operation under mine, and complete machine structure requires compact as far as possible, and on the other hand in order to reduce costs and energy-conserving and environment-protective, complete machine power is little as far as possible on the basis meeting work requirements.Existing scheme has two kinds substantially, and one is that single pump controls double-circuit system, and another kind is that double pump controls respectively.
Single pump controls double-circuit system, and namely a pump is dispensing loop and concrete cylinder pumping circuit fuel feeding.If the pump displacement that this system is selected is less, then distribute cylinder movement relatively slower, whole system can be caused to pulse, build the pressure; If pump displacement is comparatively large, pumping cylinder motion speed can be very fast, and the impact of generation can be comparatively large, and the coupling of concrete cylinder pumping cylinder and distributing valve oil cylinder can become very difficult.
Double pump control system, i.e. concrete cylinder pumping cylinder system and S valve tilt cylinder system individually fuel feeding.To be crossed one another control by selector valve commutation, but pump delivery and power consumpiton can not alternately be mated, the power of the motor in general double pump control system needs to reach the peak output needed for concrete cylinder pumping cylinder system and the peak output sum needed for S valve tilt cylinder system, will certainly cause the significant wastage of the energy like this.
Summary of the invention
For above-mentioned prior art Problems existing, the utility model provides a kind of mining wet sprayer all-hydraulic control hydraulic system of pump, the Auto-matching of power of motor and concrete cylinder pumping system and S valve tilt cylinder system acting can be realized in double pump control system, complete machine power can be reduced, the working efficiency of mining wet-spraying machine can be improved simultaneously.
To achieve these goals, the utility model provides a kind of mining wet sprayer all-hydraulic control hydraulic system of pump, comprise fuel tank, motor, constant output pump, constant pressure pump, concrete pumping cylinder system, S valve tilt cylinder system, pilot operated directional control valve, reduction valve, described motor is connected with constant output pump and constant pressure pump respectively, and the filler opening of described constant output pump is all connected with fuel tank with the filler opening of constant pressure pump;
Described concrete pumping cylinder system comprises master cylinder pilot operated directional control valve, left position master cylinder, right position master cylinder, the first pressure difference valve and the second pressure difference valve, described left position master cylinder has the first buffer mouth, described right position master cylinder has the second buffer mouth, and described S valve tilt cylinder system comprises S valve tilt cylinder pilot operated directional control valve, right position S valve tilt cylinder, shuttle valve and left position S valve tilt cylinder;
The oil outlet of described constant output pump is connected with the P1 mouth of master cylinder pilot operated directional control valve, wherein the A1 mouth of master cylinder pilot operated directional control valve is connected with the rodless cavity hydraulic fluid port of left position master cylinder, the B1 mouth of master cylinder pilot operated directional control valve is connected with the rodless cavity hydraulic fluid port of right position master cylinder, the rod chamber hydraulic fluid port of described left position master cylinder is connected with the rod chamber hydraulic fluid port of right position master cylinder, a signal port of described left position master cylinder is connected with the filler opening of the 3rd one-way valve, another signal port of this left position master cylinder is connected with the spring chamber of the second pressure difference valve and one end of the 3rd damping hole respectively, the other end and the oil outlet of the 3rd one-way valve of described 3rd damping hole are communicated with and are connected with the filler opening of the second pressure difference valve afterwards, the upper oil circuit of the oil outlet of described second pressure difference valve is connected with the X2 mouth of S valve tilt cylinder pilot operated directional control valve, the lower oil circuit of the oil outlet of the second pressure difference valve is connected with the rodless cavity hydraulic fluid port of left position master cylinder by the 4th one-way valve, a signal port of described right position master cylinder is connected with the filler opening of the second one-way valve, another signal port of this right position master cylinder is connected with the spring chamber of the first pressure difference valve and one end of the second damping hole respectively, be connected with the oil outlet of the second one-way valve after the other end of described second damping hole and the oil outlet of the second one-way valve are communicated with, the upper oil circuit of the oil outlet of described first pressure difference valve is connected with the Y2 mouth of S valve tilt cylinder pilot operated directional control valve, the lower oil circuit of the oil outlet of the first pressure difference valve is connected with the rodless cavity hydraulic fluid port D12 mouth of right position master cylinder by the first one-way valve,
The A2 mouth of described S valve tilt cylinder pilot operated directional control valve is connected with the rodless cavity hydraulic fluid port of left position S valve tilt cylinder, the B2 mouth of this S valve tilt cylinder pilot operated directional control valve is connected with the rodless cavity hydraulic fluid port of right position S valve tilt cylinder, the piston rod of described right position S valve tilt cylinder is that linked manner is connected with the piston rod of left position S valve tilt cylinder, rod chamber hydraulic fluid port and the rod chamber hydraulic fluid port of right position S valve tilt cylinder of described left position S valve tilt cylinder are communicated with and are connected with fuel tank afterwards, the signal port of described left position S valve tilt cylinder is connected with the X1 mouth of master cylinder pilot operated directional control valve, the signal port of described right position S valve tilt cylinder is connected with the Y1 mouth of master cylinder pilot operated directional control valve, wherein the signal port of left position S valve tilt cylinder is connected by shuttle valve with the signal port of right position S valve tilt cylinder, the C mouth of described shuttle valve is connected with the X mouth of pilot operated directional control valve, and be connected with fuel tank by the first damping hole, wherein the T mouth of pilot operated directional control valve is connected with fuel tank, the A mouth of pilot operated directional control valve is connected with the displacement controller of constant output pump by guide's oil circuit, described constant pressure pump is connected with the P2 mouth of S valve tilt cylinder pilot operated directional control valve, and be connected with one end of reduction valve by throttle valve, wherein the other end of reduction valve is connected with the P mouth of pilot operated directional control valve, described reduction valve, the T1 mouth of master cylinder pilot operated directional control valve is all connected with fuel tank with the T2 mouth of S valve tilt cylinder pilot operated directional control valve.
The utility model adopts concrete pumping cylinder system and S valve tilt cylinder system individually feed flow, by guide's oil circuit intersection sensing control, any one concrete pumping cylinder or S valve tilt cylinder move to terminal, all by generation transducing signal, this signal transmits by intersecting, finally constant output pump is fed back to realize the control exporting oil mass as variable signal, can be implemented in the Auto-matching of power of motor and concrete cylinder pumping system and S valve tilt cylinder system acting in double pump control system, and then reduce complete machine power; Meanwhile, such reciprocation cycle can make the Auto-matching of power of motor and concrete cylinder pumping system and S valve tilt cylinder system acting, thus improves working efficiency; In addition, this system achieves all-hydraulic control, avoids using anti-explosion electric Ore-controlling Role, greatly reduces cost.
Accompanying drawing explanation
Fig. 1 is hydraulic structure schematic diagram of the present utility model.
In figure: 1, motor, 2, constant output pump, 3, constant pressure pump, 4, fuel tank, 5, first damping hole, 6, pilot operated directional control valve, 7, throttle valve, 8, reduction valve, 9, master cylinder pilot operated directional control valve, 10, right position master cylinder, 11, first one-way valve, 12, first pressure difference valve, 13, second one-way valve, 14, second damping hole, 15, S valve tilt cylinder pilot operated directional control valve, 16, right position S valve tilt cylinder, 17, shuttle valve, 18, left position S valve tilt cylinder, 19, 3rd damping hole, 20, 3rd one-way valve, 21, second pressure difference valve, 22, left position master cylinder, 23, 4th one-way valve, 24, first buffer mouth, 25, second buffer mouth.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
For sake of convenience, alleged in literary composition " on " D score " left side " " right side " consistent with the direction, upper and lower, left and right of accompanying drawing itself, but restriction effect is not played to structure of the present utility model.
As shown in Figure 1, the all-hydraulic control hydraulic system of pump of a kind of mining wet sprayer, comprise fuel tank 4, motor 1, constant output pump 2, constant pressure pump 3, concrete pumping cylinder system, S valve tilt cylinder system, pilot operated directional control valve 6, reduction valve 8, described motor 1 is connected with constant output pump 2 and constant pressure pump 3 respectively, and the filler opening of described constant output pump 2 is all connected with fuel tank 4 with the filler opening of constant pressure pump 3;
Described concrete pumping cylinder system comprises master cylinder pilot operated directional control valve 9, left position master cylinder 22, right position master cylinder 10, first pressure difference valve 12 and the second pressure difference valve 21, described left position master cylinder 22 has the first buffer mouth 24, described right position master cylinder 10 has the second buffer mouth 25, and described S valve tilt cylinder system comprises S valve tilt cylinder pilot operated directional control valve 15, right position S valve tilt cylinder 16, shuttle valve 17 and left position S valve tilt cylinder 18;
The oil outlet of described constant output pump 2 is connected with the P1 mouth of master cylinder pilot operated directional control valve 9, wherein the A1 mouth of master cylinder pilot operated directional control valve 9 is connected with the rodless cavity hydraulic fluid port of left position master cylinder (22), the B1 mouth of master cylinder pilot operated directional control valve 9 is connected with the rodless cavity hydraulic fluid port of right position master cylinder (10), the rod chamber hydraulic fluid port of described left position master cylinder (22) is connected with the rod chamber hydraulic fluid port of right position master cylinder (10), a signal port of described left position master cylinder (22) is connected with the filler opening of the 3rd one-way valve 20, another signal port of this left position master cylinder (22) is connected with the spring chamber of the second pressure difference valve 21 and one end of the 3rd damping hole 19 respectively, the other end and the oil outlet of the 3rd one-way valve 20 of described 3rd damping hole 19 are communicated with and are connected with the filler opening of the second pressure difference valve 21 afterwards, the upper oil circuit of the oil outlet of described second pressure difference valve 21 is connected with the X2 mouth of S valve tilt cylinder pilot operated directional control valve (15), the lower oil circuit of the oil outlet of the second pressure difference valve 21 is connected with the rodless cavity hydraulic fluid port of left position master cylinder 22 by the 4th one-way valve 23, a signal port of described right position master cylinder (10) is connected with the filler opening of the second one-way valve 13, another signal port of this right position master cylinder (10) is connected with the spring chamber of the first pressure difference valve 12 and one end of the second damping hole 14 respectively, the other end and the oil outlet of the second one-way valve 13 of described second damping hole 14 are communicated with and are connected with the oil outlet of the second one-way valve 13 afterwards, the upper oil circuit of the oil outlet of described first pressure difference valve 12 is connected with the Y2 mouth of S valve tilt cylinder pilot operated directional control valve (15), the lower oil circuit of the oil outlet of the first pressure difference valve 12 is connected with the rodless cavity hydraulic fluid port D12 mouth of right position master cylinder 10 by the first one-way valve 11,
The A2 mouth of described S valve tilt cylinder pilot operated directional control valve (15) is connected with the rodless cavity hydraulic fluid port of left position S valve tilt cylinder (18), the B2 mouth of this S valve tilt cylinder pilot operated directional control valve (15) is connected with the rodless cavity hydraulic fluid port of right position S valve tilt cylinder (16), the piston rod of described right position S valve tilt cylinder 16 is that linked manner is connected with the piston rod of left position S valve tilt cylinder 18, rod chamber hydraulic fluid port and the rod chamber hydraulic fluid port of right position S valve tilt cylinder (16) of described left position S valve tilt cylinder (18) are communicated with and are connected with fuel tank 4 afterwards, the described left signal port of position S valve tilt cylinder (18) is connected with the X1 mouth of master cylinder pilot operated directional control valve 9, the described right signal port of position S valve tilt cylinder (16) is connected with the Y1 mouth of master cylinder pilot operated directional control valve 9, wherein the signal port of left position S valve tilt cylinder (18) is connected by shuttle valve 17 with the signal port of right position S valve tilt cylinder (16), the C mouth of described shuttle valve 17 is connected with the X mouth of pilot operated directional control valve 6, and be connected with fuel tank 4 by the first damping hole 5, wherein the T mouth of pilot operated directional control valve 6 is connected with fuel tank 4, the A mouth of pilot operated directional control valve 6 is connected with the displacement controller of constant output pump 2 by guide's oil circuit, described constant pressure pump 3 is connected with the P2 mouth of S valve tilt cylinder pilot operated directional control valve (15), and be connected with one end of reduction valve 8 by throttle valve 7, wherein the other end of reduction valve 8 is connected with the P mouth of pilot operated directional control valve 6, described reduction valve 8, the T1 mouth of master cylinder pilot operated directional control valve 9 is all connected with fuel tank 4 with the T2 mouth of S valve tilt cylinder pilot operated directional control valve (15).
Constant output pump 2 is concrete cylinder pumping system fuel feeding, constant pressure pump 3 is S valve tilt cylinder system fuel feeding, actuating motor 1, oil is supplied the P2 mouth of S valve tilt cylinder pilot operated directional control valve 15 by constant pressure pump 3, S valve tilt cylinder pilot operated directional control valve 15 its A2 mouth of original state and P2 mouth are connected, the rodless cavity hydraulic fluid port F1 mouth that oil is supplied left position S valve tilt cylinder 18 by the A2 mouth of S valve tilt cylinder pilot operated directional control valve 15 promotes piston and stretches out, because the piston rod of left position S valve tilt cylinder 18 and the piston rod of right position S valve tilt cylinder 16 link, so the piston rod of left position S valve tilt cylinder 18 stretch out while the piston rod of right position S valve tilt cylinder 16 can retract.
When left position S valve tilt cylinder 18 does not arrive stroke end, the rod chamber hydraulic fluid port F2 mouth of left position S valve tilt cylinder 18 and signal port F3 mouth communicate oil sump tank 4, now the control mouth C mouth of shuttle valve 17 does not have fluid to export, the X mouth of pilot operated directional control valve 6 does not have fluid to enter, so pilot operated directional control valve 6 is operated in spring position, A mouth and the T mouth of pilot operated directional control valve 6 communicate, constant output pump 2 displacement controller pilot pressure is 0, thus constant output pump 2 is operated in minimum injection rate, simultaneously the X1 mouth of master cylinder liquid controlled reversing 9 and Y1 mouth are all without pressure oil, so master cylinder pilot operated directional control valve 9 is operated in meta under spring force, the fluid that constant output pump 2 supplies directly flows back to fuel tank 4, at this moment constant output pump 2 can not consume or consume very small-power, now constant pressure pump 3 is operated in low pressure huge discharge operating mode, at this moment the power of motor 1 can mate with constant pressure pump 3, the power of motor 1 mainly supplies S valve tilt cylinder system works.
When left position S valve tilt cylinder 18 stroke is to terminal, its rodless cavity hydraulic fluid port F1 mouth and signal port F3 mouth are connected, thus the X1 mouth that the part oil in left position S valve tilt cylinder 18 supplies master cylinder pilot operated directional control valve 9 on the one hand by signal port F3 mouth makes it commutate, concrete cylinder pumping system is started working, it is made to commutate by the X mouth of the control mouth C mouth supply pilot operated directional control valve 6 of shuttle valve 17 on the other hand, the P mouth of pilot operated directional control valve 6 and A mouth are connected, thus a part of oil is passed through throttle valve 7 by constant pressure pump 3 successively, reduction valve 8, pilot operated directional control valve 6 and guide's oil circuit feed back to the displacement controller of constant output pump 2, the pressure of constant pressure pump 3 raises simultaneously, constant pressure pump 3 discharge capacity is reduced to minimum, the pressure oil of constant pressure pump 3 flow in the displacement controller of constant output pump 2, constant output pump 2 can be made to put maximum pump discharge, thus concrete cylinder pumping system is started working, at this moment constant output pump 2 automatically and motor 1 power match, fluid is supplied the P1 mouth of master cylinder pilot operated directional control valve 9 by the oil outlet of constant output pump 2, because the part oil in now left position S valve tilt cylinder 18 is by the X1 mouth of signal port F3 mouth supply master cylinder pilot operated directional control valve 9, so the P1 mouth of master cylinder pilot operated directional control valve 9 and A1 mouth are connected, the pressure oil of constant output pump 2 enters the rodless cavity hydraulic fluid port D22 mouth of left position master cylinder 22 through the A1 mouth of master cylinder pilot operated directional control valve 9, promote left position master cylinder 22 piston rod to stretch out, because the rod chamber hydraulic fluid port D21 mouth at master cylinder 22 stroke end, left position place is communicated with the rod chamber hydraulic fluid port D11 mouth at master cylinder 10 stroke end, right position place, so when left position master cylinder 22 piston rod stretches out, right position master cylinder 10 piston rod can be made to retract, when left position master cylinder 22 arrives stroke end, the signal port C24 mouth of left position master cylinder 22 is by the filler opening of the 3rd one-way valve 20 by part oil supply the second pressure difference valve 21, wherein a part arrives the second pressure difference valve 21 cavity of resorption, another part arrives the signal port C23 mouth of left position master cylinder 22 and the spring chamber of the second pressure difference valve 21 by the 3rd damping hole 19, because the spring chamber of the second pressure difference valve 21 is successively by the signal port C23 mouth of left position master cylinder 22, the rod chamber hydraulic fluid port D21 mouth of left position master cylinder 22, the second buffer mouth 25 on the rod chamber hydraulic fluid port D11 mouth of right position master cylinder 10 and right position master cylinder 10 connects the rodless cavity hydraulic fluid port D12 mouth entering right position master cylinder 10, and connected by B1 and the T1 mouth of master cylinder pilot operated directional control valve 9 and fuel tank, 3rd damping hole 19 and the second pressure difference valve 21 two ends produce pressure reduction, the second pressure difference valve 21 is caused to commutate, thus make fluid supply the X2 mouth of S valve tilt cylinder pilot operated directional control valve 15, and the oil outlet of the 4th one-way valve 23 is connected with the rodless cavity hydraulic fluid port D22 mouth of left position master cylinder 22, and the rodless cavity hydraulic fluid port D22 mouth of left position master cylinder 22 now has the high pressure oil of the A1 mouth from master cylinder pilot operated directional control valve 9, so the 4th one-way valve 23 is in closed condition, Y2 mouth and first one-way valve 11 of another aspect S valve tilt cylinder pilot operated directional control valve 15 are connected, by B1 mouth and the T1 mouth oil sump tank of master cylinder pilot operated directional control valve 9, the fluid that second pressure difference valve 21 supplies makes the P2 mouth of S valve tilt cylinder pilot operated directional control valve 15 and B2 mouth connect, the A2 mouth of S valve tilt cylinder pilot operated directional control valve 15 and T2 mouth are connected, now the signal port F3 mouth of left position S valve tilt cylinder 18 is by its rodless cavity hydraulic fluid port F1 mouth, A2 and T2 and the fuel tank of S valve tilt cylinder pilot operated directional control valve 15 are connected, the control mouth C mouth decompression of shuttle valve 17, the X mouth of pilot operated directional control valve 6 does not have fluid to enter, so pilot operated directional control valve 6 is operated in spring position, A mouth and the T mouth of pilot operated directional control valve 6 communicate, constant output pump 2 displacement controller pilot pressure is 0, thus constant output pump 2 is operated in minimum injection rate, at this moment constant output pump 2 can not consume or consume very small-power, after the commutation of S valve tilt cylinder pilot operated directional control valve 15, constant pressure pump 3 pressure reduces discharge capacity and increases, fluid supplies the rodless cavity hydraulic fluid port E1 mouth of right position S valve tilt cylinder 16 by the B2 mouth of S valve tilt cylinder pilot operated directional control valve 15, fluid from constant pressure pump 3 promotes right position S valve tilt cylinder 16 piston rod and stretches out, thus left position S valve tilt cylinder 18 piston rod is retracted.
When right position S valve tilt cylinder 16 does not arrive stroke end, the signal port E3 mouth of right position S valve tilt cylinder 16 and rod chamber hydraulic fluid port E2 mouth communicate oil sump tank 4, because the piston rod of right position S valve tilt cylinder 16 and the piston rod of left position S valve tilt cylinder 18 link, retract so the piston rod of right position S valve tilt cylinder 16 stretches out the piston rod that can promote left position S valve tilt cylinder 18 constantly, now the A2 mouth of S valve tilt cylinder pilot operated directional control valve 15 and T2 mouth connect, fluid in former left position S valve tilt cylinder 18 can flow back in fuel tank 4 by S valve tilt cylinder pilot operated directional control valve 15, and now the control mouth C mouth of shuttle valve 17 does not have fluid to export, constant output pump 2 continues to operate in minimum injection rate, simultaneously the X1 mouth of master cylinder liquid controlled reversing 9 and Y1 mouth are all without pressure oil, so master cylinder pilot operated directional control valve 9 is operated in meta under spring force, the fluid that constant output pump 2 supplies directly flows back to fuel tank 4, at this moment constant output pump 2 can not consume or consume very small-power, the power of motor 1 can mate with constant pressure pump 3, the power of motor 1 mainly supplies S valve tilt cylinder system works.
When right position S valve tilt cylinder 16 stroke is to terminal, constant pressure pump 3 pressure raises until discharge capacity is put minimum, constant pressure pump 3 consumes very small-power, simultaneously the rodless cavity hydraulic fluid port E1 mouth of right position S valve tilt cylinder 16 and signal port E3 mouth are connected, thus the Y1 mouth that the oil of right position S valve tilt cylinder 16 supplies master cylinder pilot operated directional control valve 9 on the one hand by signal port E3 mouth makes it commutate, concrete cylinder pumping system is started working, it is made to commutate by the X mouth of the control mouth C mouth supply pilot operated directional control valve 6 of shuttle valve 17 on the other hand, the P mouth of pilot operated directional control valve 6 and A mouth are connected, thus constant pressure pump 3 fluid is by throttle valve 7, reduction valve 8, what pilot operated directional control valve 6 and guide's oil circuit fed back to constant output pump 2 takes the photograph displacement controller, constant output pump 2 puts maximum pump discharge, thus concrete cylinder pumping system is started working, at this moment constant output pump 2 automatically and motor power (output) match, fluid is supplied the P1 mouth of master cylinder pilot operated directional control valve 9 by the oil outlet of constant output pump 2, because the oil of now right position S valve tilt cylinder 16 is by the Y1 mouth of signal port E3 mouth supply master cylinder pilot operated directional control valve 9, so the P1 mouth of master cylinder pilot operated directional control valve 9 and B1 mouth are connected, T1 mouth and the A1 mouth of master cylinder pilot operated directional control valve 9 are connected, the pressure oil of constant output pump 2 enters the rodless cavity hydraulic fluid port D12 mouth of right position master cylinder 10 through the B1 mouth of master cylinder pilot operated directional control valve 9, promote right position master cylinder 10 piston rod to stretch out, because the rod chamber hydraulic fluid port D11 mouth at master cylinder 10 stroke end, right position place is communicated with the rod chamber hydraulic fluid port D21 mouth at master cylinder 22 stroke end, left position place, so during right position master cylinder 10 action, left position master cylinder 22 piston rod can be made to retract, fluid in originally left position master cylinder 22 can flow in fuel tank 4 by master cylinder pilot operated directional control valve 9, when right position master cylinder 10 arrives stroke end, the signal port C14 mouth of right position master cylinder 10 is by the filler opening of the second one-way valve 13 by part oil supply the first pressure difference valve 12, wherein a part arrives the first pressure difference valve 12 cavity of resorption, another part arrives the signal port C13 mouth of right position master cylinder 10 and the spring chamber of the first pressure difference valve 21 by the second damping hole 14, because the first pressure difference valve 12 spring chamber is successively by the signal port C13 mouth of right position master cylinder 10, right position master cylinder 10 rod chamber hydraulic fluid port D11 mouth, the rod chamber hydraulic fluid port D21 mouth of left position master cylinder 22 is connected the rodless cavity hydraulic fluid port D22 mouth entering left position master cylinder 22 with the first buffer mouth on left position master cylinder 22, and connected by A1 and the T1 mouth of master cylinder pilot operated directional control valve 9 and fuel tank, second damping hole 14 and the first pressure difference valve 12 two ends produce pressure reduction, the first pressure difference valve 12 is caused to commutate, fluid is made to supply the Y2 mouth of S valve tilt cylinder pilot operated directional control valve 15, and the oil outlet of the first one-way valve 11 is connected with the rodless cavity hydraulic fluid port D12 mouth of right position master cylinder 10, and the rodless cavity hydraulic fluid port D12 mouth of right position master cylinder 10 now has the high pressure oil of the B1 mouth from master cylinder pilot operated directional control valve 9, so the first one-way valve 11 is in closed condition, X2 mouth and the 4th one-way valve 23 of another aspect S valve tilt cylinder pilot operated directional control valve 15 are connected, by A1 and the T1 mouth oil sump tank of master cylinder pilot operated directional control valve 9, the fluid that first pressure difference valve 12 supplies makes the P2 mouth of S valve tilt cylinder pilot operated directional control valve 15 and A2 mouth connect, B2 and the T2 of S valve tilt cylinder pilot operated directional control valve 15 is connected, now the signal port E3 of right position S valve tilt cylinder 16 is by its rodless cavity hydraulic fluid port E1 mouth, B2 and T2 and the fuel tank of S valve tilt cylinder pilot operated directional control valve 15 are connected, the control mouth C mouth decompression of shuttle valve 17, the X mouth of pilot operated directional control valve 6 does not have fluid to enter, so pilot operated directional control valve 6 is operated in spring position, A mouth and the T mouth of pilot operated directional control valve 6 communicate, constant output pump 2 displacement controller pilot pressure is 0, thus constant output pump 2 is operated in minimum injection rate, at this moment constant output pump 2 can not consume or consume very small-power, after the commutation of S valve tilt cylinder pilot operated directional control valve 15, constant pressure pump 3 pressure reduces discharge capacity and increases, fluid supplies the rodless cavity hydraulic fluid port F1 mouth of right position S valve tilt cylinder 16 by A2 mouth, fluid from constant pressure pump 3 promotes right position S valve tilt cylinder 18 piston rod and stretches out, thus right position S valve tilt cylinder 16 piston rod is retracted.
Such reciprocation cycle can realize the Auto-matching of power of motor and concrete cylinder system and tilt cylinder system acting, raises the efficiency, and reduces complete machine power; Achieve all-hydraulic control, avoid using anti-explosion electric Ore-controlling Role, greatly reduce cost.
Claims (1)
1. the all-hydraulic control hydraulic system of pump of mining wet sprayer, comprise fuel tank (4), motor (1), constant output pump (2), constant pressure pump (3), concrete pumping cylinder system, S valve tilt cylinder system, described motor (1) is connected with constant output pump (2) and constant pressure pump (3) respectively, the filler opening of described constant output pump (2) is all connected with fuel tank (4) with the filler opening of constant pressure pump (3), it is characterized in that, also comprise pilot operated directional control valve (6), reduction valve (8);
Described concrete pumping cylinder system comprises master cylinder pilot operated directional control valve (9), left position master cylinder (22), right position master cylinder (10), the first pressure difference valve (12) and the second pressure difference valve (21), described left position master cylinder (22) has the first buffer mouth (24), described right position master cylinder (10) has the second buffer mouth (25), and described S valve tilt cylinder system comprises S valve tilt cylinder pilot operated directional control valve (15), right position S valve tilt cylinder (16), shuttle valve (17) and left position S valve tilt cylinder (18);
The oil outlet of described constant output pump (2) is connected with the P1 mouth of master cylinder pilot operated directional control valve (9), wherein the A1 mouth of master cylinder pilot operated directional control valve (9) is connected with the rodless cavity hydraulic fluid port of left position master cylinder (22), the B1 mouth of master cylinder pilot operated directional control valve (9) is connected with the rodless cavity hydraulic fluid port of right position master cylinder (10), the rod chamber hydraulic fluid port of described left position master cylinder (22) is connected with the rod chamber hydraulic fluid port of right position master cylinder (10), a signal port of described left position master cylinder (22) is connected with the filler opening of the 3rd one-way valve (20), another signal port of this left position master cylinder (22) is connected with the spring chamber of the second pressure difference valve (21) and one end of the 3rd damping hole (19) respectively, the other end and the oil outlet of the 3rd one-way valve (20) of described 3rd damping hole (19) are communicated with and are connected with the filler opening of the second pressure difference valve (21) afterwards, the upper oil circuit of the oil outlet of described second pressure difference valve (21) is connected with the X2 mouth of S valve tilt cylinder pilot operated directional control valve (15), the lower oil circuit of the oil outlet of the second pressure difference valve (21) is connected with the rodless cavity hydraulic fluid port of left position master cylinder (22) by the 4th one-way valve (23), a signal port of described right position master cylinder (10) is connected with the filler opening of the second one-way valve (13), another signal port of this right position master cylinder (10) is connected with the spring chamber of the first pressure difference valve (12) and one end of the second damping hole (14) respectively, the other end and the oil outlet of the second one-way valve (13) of described second damping hole (14) are communicated with and are connected with the oil outlet of the second one-way valve (13) afterwards, the upper oil circuit of the oil outlet of described first pressure difference valve (12) is connected with the Y2 mouth of S valve tilt cylinder pilot operated directional control valve (15), the lower oil circuit of the oil outlet of the first pressure difference valve (12) is connected with the rodless cavity hydraulic fluid port D12 mouth of right position master cylinder (10) by the first one-way valve (11),
The A2 mouth of described S valve tilt cylinder pilot operated directional control valve (15) is connected with the rodless cavity hydraulic fluid port of left position S valve tilt cylinder (18), the B2 mouth of this S valve tilt cylinder pilot operated directional control valve (15) is connected with the rodless cavity hydraulic fluid port of right position S valve tilt cylinder (16), the piston rod of described right position S valve tilt cylinder (16) is that linked manner is connected with the piston rod of left position S valve tilt cylinder (18), rod chamber hydraulic fluid port and the rod chamber hydraulic fluid port of right position S valve tilt cylinder (16) of described left position S valve tilt cylinder (18) are communicated with and are connected with fuel tank (4) afterwards, the signal port of described left position S valve tilt cylinder (18) is connected with the X1 mouth of master cylinder pilot operated directional control valve (9), the signal port of described right position S valve tilt cylinder (16) is connected with the Y1 mouth of master cylinder pilot operated directional control valve (9), wherein the signal port of left position S valve tilt cylinder (18) is connected by shuttle valve (17) with the signal port of right position S valve tilt cylinder (16), the C mouth of described shuttle valve (17) is connected with the X mouth of pilot operated directional control valve (6), and be connected with fuel tank (4) by the first damping hole (5), wherein the T mouth of pilot operated directional control valve (6) is connected with fuel tank (4), the A mouth of pilot operated directional control valve (6) is connected with the displacement controller of constant output pump (2) by guide's oil circuit, described constant pressure pump (3) is connected with the P2 mouth of S valve tilt cylinder pilot operated directional control valve (15), and be connected with one end of reduction valve (8) by throttle valve (7), wherein the other end of reduction valve (8) is connected with the P mouth of pilot operated directional control valve (6), described reduction valve (8), the T1 mouth of master cylinder pilot operated directional control valve (9) is all connected with fuel tank (4) with the T2 mouth of S valve tilt cylinder pilot operated directional control valve (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420421424.0U CN204127001U (en) | 2014-07-29 | 2014-07-29 | The all-hydraulic control hydraulic system of pump of mining wet sprayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420421424.0U CN204127001U (en) | 2014-07-29 | 2014-07-29 | The all-hydraulic control hydraulic system of pump of mining wet sprayer |
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| CN204127001U true CN204127001U (en) | 2015-01-28 |
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| CN201420421424.0U Withdrawn - After Issue CN204127001U (en) | 2014-07-29 | 2014-07-29 | The all-hydraulic control hydraulic system of pump of mining wet sprayer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196786A (en) * | 2014-07-29 | 2014-12-10 | 徐州五洋科技股份有限公司 | Full-hydraulic control pumping hydraulic system used for wet spraying machine for mining |
-
2014
- 2014-07-29 CN CN201420421424.0U patent/CN204127001U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196786A (en) * | 2014-07-29 | 2014-12-10 | 徐州五洋科技股份有限公司 | Full-hydraulic control pumping hydraulic system used for wet spraying machine for mining |
| CN104196786B (en) * | 2014-07-29 | 2017-06-20 | 徐州五洋科技股份有限公司 | A kind of all-hydraulic control hydraulic system of pump of mining wet sprayer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150128 Effective date of abandoning: 20170620 |