CN204371814U - Large Dump Truck hydraulic pressure stair control system - Google Patents
Large Dump Truck hydraulic pressure stair control system Download PDFInfo
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- CN204371814U CN204371814U CN201420754078.8U CN201420754078U CN204371814U CN 204371814 U CN204371814 U CN 204371814U CN 201420754078 U CN201420754078 U CN 201420754078U CN 204371814 U CN204371814 U CN 204371814U
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Abstract
Large Dump Truck hydraulic pressure stair control system, comprises solenoid valve, hydraulic pressure stair control cylinder, buzzer, decline status indicator lamp, descending spacing tutorial light, plugging relay, the first rotary switch, the second rotary switch, the first rise limit relay and the second rise limit relay.The utility model structure is simple, and reliable operation, easy to operate, low cost of manufacture, is conducive to the safety guaranteeing staff and Large Dump Truck.Use the utility model, when stair are in down state, staff can get on or off the bus easily; When dumping car is in driving states, stair are in cocked position, thus are conducive to the collision avoiding stair and road surface, and probability of damage is low.
Description
Technical field
The utility model relates to all kinds of large-scale engineering machinery, particularly relates to a kind of Large Dump Truck hydraulic pressure stair control system.
Background technique
Existing quarry tipper mostly is large-tonnage vehicle, and chassis height is higher, and the stair to pedal of truck mostly are again fixed, and its initial position is higher, and staff is difficult to pedal, especially winter cold period, easily make staff skid injured.On the other hand, because mine road conditions are poor, if run into comparatively hollow place recess, easily break stair to pedal, cause damage.
Model utility content
The technical problems to be solved in the utility model is, overcomes the above-mentioned defect that prior art exists, provides a kind of Large Dump Truck hydraulic pressure stair control system realizing elevator.
The utility model solves the technological scheme that its technical problem adopts:
Large Dump Truck hydraulic pressure stair control system, comprise solenoid valve, hydraulic pressure stair control cylinder, buzzer, decline status indicator lamp, descending spacing tutorial light, plugging relay, first rotary switch, second rotary switch, first rises limit relay, lower position switch, upper limit position switch and second rises limit relay, electromagnetic coil one end on the left of solenoid valve is connected with DC electrical source by two rotary switches, electromagnetic coil one end on the left of solenoid valve is also connected with one end of buzzer, the other end ground connection of buzzer, the electromagnetic coil the other end on the left of solenoid valve is by the contact ground connection of plugging relay, coil one end ground connection of plugging relay, the coil the other end of plugging relay is stop sign input end, hydraulic pressure stair control cylinder is connected with hydraulic pressure stair by piston rod, hydraulic pressure stair control cylinder is connected with high-pressure and hydraulic oil pump with fuel tank by solenoid valve, first coil one end of rising limit relay is connected with DC electrical source, first coil and second rising limit relay passes through upper limit position switch ground connection after rising the coils connected in series of limit relay, decline status indicator lamp one end is connected with DC electrical source, the decline status indicator lamp the other end rises the contact ground connection of limit relay by second, first rises the normally closed interlock of limit relay is connected with one end of buzzer, first normally open contact one end of rising limit relay is connected with DC electrical source, first the other end of normally open contact rising limit relay is connected with the 3rd contact of the second rotary switch, the other end of the 3rd contact of the second rotary switch is connected with the electromagnetic coil on the right side of solenoid valve, the electromagnetic coil the other end on the right side of solenoid valve is by the 3rd contact ground connection of the first rotary switch, descending spacing tutorial light one end is connected with DC electrical source, the descending spacing tutorial light the other end is by lower position switch ground connection.
Further, first rotary switch is located in the operator cabin of dumping car, second rotary switch is located near hydraulic pressure stair, first contact of the first rotary switch is with the first contact of the second rotary switch and be connected with the electromagnetic coil one end on the left of solenoid valve after connecing, three contact of second contact of the first rotary switch with the second contact of the second rotary switch and by the second rotary switch after connecing is connected with the electromagnetic coil on the right side of solenoid valve, then by the 3rd contact ground connection of the first knob.
Further, the first rotary switch and the second rotary switch are three gear self-resetting switch, and three gears are respectively 0 gear, decline gear, rising gear, and 0 gear is between decline gear and rising gear.
Further, described DC electrical source is 24V DC electrical source, powers for giving each components and parts.
Further, described plugging relay is normally opened relay, second rise limit relay is normally closed relay, first rise limit relay is normally-open normally-close interlocking relay, first normally closed interlock rising limit relay is connected between the second contact of the second rotary switch and buzzer, first normally open contact rising limit relay is connected to the 3rd of the second rotary switch the between contact and DC electrical source, and the first controller rising the normally open contact and Large Dump Truck self of limit relay is connected.
Further, described solenoid valve is three position four-way electromagnetic valve, the return opening of three position four-way electromagnetic valve is connected with fuel tank, and the oil-feed port of three position four-way electromagnetic valve is connected with fuel tank by high-pressure and hydraulic oil pump, and two pouring orifices of three position four-way electromagnetic valve are connected with hydraulic pressure stair control cylinder.
Further, described hydraulic pressure stair control cylinder is provided with lifting and forced landing two oil pockets.
Further, the coil two ends of described plugging relay oppositely and be connected to the first diode, the described first coil two ends of rising limit relay oppositely and be connected to the second diode, the described second coil two ends of rising limit relay oppositely and be connected to the 3rd diode, electromagnetic coil one end on the left of solenoid valve is connected with one end of buzzer by the 4th diode, and the first normally closed interlock rising limit relay is connected with one end of buzzer by the 5th diode.
Further, described upper limit position switch and lower position switch are metal induction switch, when have metal near time, it becomes closed state; Hydraulic pressure stair are metal staircase.
Described 24V DC electrical source is used for power supply to each components and parts, first rotary switch and the second rotary switch are the operation equipment of staff, each tutorial light and buzzer are used to refer to the state residing for hydraulic pressure stair, each limit switch is used for obtaining the position limit of hydraulic pressure stair, hydraulic pressure stair control cylinder realizes the lifting of stair by the flowing of hydraulic oil, described solenoid valve is used for the flow direction of hydraulic control oil.Staff is by each electrical apparatus element of operation, the flow direction of the pressure oil of hydraulic system can be changed, realize the flexible of the piston rod of hydraulic pressure stair control cylinder, thus realize the lifting of hydraulic control stair, and the state position of hydraulic pressure stair can be fed back to the controller of Large Dump Truck self, be beneficial to staff and reasonably operate Large Dump Truck.
The utility model structure is simple, and reliable operation, easy to operate, low cost of manufacture, is conducive to the safety guaranteeing staff and Large Dump Truck.Use the utility model, when stair are in down state, staff can get on or off the bus easily; When dumping car is in driving states, stair are in cocked position, thus are conducive to the collision avoiding stair and road surface, damage probability low.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model Large Dump Truck hydraulic pressure stair control system;
Fig. 2 is the close timepiece of the first rotary switch.
In Fig. 1: 1, solenoid valve; Electromagnetic coil on the left of 1-1, solenoid valve; Electromagnetic coil on the right side of 1-2, solenoid valve; 2, hydraulic pressure stair control cylinder; The lifting chamber of 2-1, hydraulic pressure stair control cylinder; The decline chamber of 2-2, hydraulic pressure stair control cylinder; 3, buzzer; 4, decline status indicator lamp; 5, descending spacing tutorial light; 6, the first rotary switch; First contact of 6-1, the first rotary switch; Second contact of 6-2, the first rotary switch; 3rd contact of 6-3, the first rotary switch; 7, high-pressure and hydraulic oil pump; 8, plugging relay; The coil of 8-1, plugging relay; The contact of 8-2, plugging relay; 9, stop sign input end; 10, fuel tank; 11, first limit relay is risen; 11-1, first rises the coil of limit relay; 11-2, first rises the normally closed interlock of limit relay; 11-3, first rises the normally open contact of limit relay; 12, second limit relay is risen; 12-1, second rises the coil of limit relay; 12-2, second rises the contact of limit relay; 13, lower position switch; 14, the second rotary switch; First contact of 14-1, the second rotary switch; Second contact of 14-2, the second rotary switch; 3rd contact of 14-3, the second rotary switch; 15, upper limit position switch; D1, the first diode; D2, the second diode; D3, the 3rd diode; D4, the 4th diode; D5, the 5th diode;
In Fig. 2: the closed contact of X representative.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
With reference to Fig. 1, a kind of Large Dump Truck hydraulic pressure stair control system,
Large Dump Truck hydraulic pressure stair control system, comprise solenoid valve 1, hydraulic pressure stair control cylinder 2, buzzer 3, decline status indicator lamp 4, descending spacing tutorial light 5, plugging relay 8, first rotary switch 6, second rotary switch 14, first rises limit relay 11, lower position switch 13, upper limit position switch 15 and second rises limit relay 12, electromagnetic coil 1-1 one end on the left of solenoid valve 1 is connected with DC electrical source by two rotary switches, electromagnetic coil 1-1 one end on the left of solenoid valve 1 is also connected with one end of buzzer 3, the other end ground connection of buzzer 3, the electromagnetic coil 1-1 the other end on the left of solenoid valve 1 is by the contact 8-1 ground connection of plugging relay 8, coil 8-2 one end ground connection of plugging relay 8, the coil 8-2 the other end of plugging relay 8 is stop sign input end 9, hydraulic pressure stair control cylinder 2 is connected with hydraulic pressure stair (not shown) by piston rod (not shown), hydraulic pressure stair control cylinder 2 is connected with high-pressure and hydraulic oil pump 7 with fuel tank by solenoid valve 1, first coil 11-1 one end of rising limit relay 11 is connected with DC electrical source, the coil 12-1 that the first coil 11-1 and second rising limit relay 11 rises limit relay 12 connects rear by upper limit position switch 15 ground connection, decline status indicator lamp 4 one end is connected with DC electrical source, decline status indicator lamp 4 the other end rises the contact 12-2 ground connection of limit relay 12 by second, the first normally closed interlock 11-2 rising limit relay 11 is connected with one end of buzzer 3, first normally open contact 11-3 one end of rising limit relay 11 is connected with DC electrical source, first the other end of normally open contact 11-3 rising limit relay 11 is connected with the 3rd contact 14-3 of the second rotary switch 14, the other end of the 3rd contact 14-3 of the second rotary switch 14 is connected with the electromagnetic coil 1-2 on the right side of solenoid valve 1, the electromagnetic coil 1-2 the other end on the right side of solenoid valve 1 is by the 3rd contact 6-3 ground connection of the first rotary switch 6, descending spacing tutorial light 5 one end is connected with DC electrical source, descending spacing tutorial light 5 the other end is by lower position switch 13 ground connection.
First rotary switch 6 is located in the operator cabin of dumping car, second rotary switch 14 is located near hydraulic pressure stair, and the first contact 6-1 of the first rotary switch 6 is with the first contact 14-1 of the second rotary switch 14 and be connected with the one end of the electromagnetic coil 1-1 on the left of solenoid valve 1 after connecing; Second contact 6-2 of the first rotary switch 6 is with the second contact 14-2 of the second rotary switch 14 and be connected with the electromagnetic coil 1-2 one end on the right side of solenoid valve 1 by the 3rd contact 14-3 of the second rotary switch 14 after connecing, and the electromagnetic coil 1-2 the other end on the right side of solenoid valve 1 is by the 3rd contact 6-3 ground connection of the first rotary switch 6.
First rotary switch 6 and the second rotary switch 14 are three gear self-resetting switch, and three gears are respectively 0 gear, decline gear, rising gear, and 0 gear is between decline gear and rising gear.
Described DC electrical source is 24V DC electrical source, powers for giving each components and parts.
Described plugging relay 8 is normally opened relay, second rise limit relay 12 is normally closed relay, first rise limit relay 11 is normally-open normally-close interlocking relay, the first normally closed interlock 11-2 rising limit relay 11 is connected between the second contact 14-2 of the second rotary switch 14 and buzzer 3, the first normally open contact 11-3 rising limit relay 11 is connected between the 3rd contact 14-3 of the second rotary switch 14 and DC electrical source, and the first controller (not shown) rising the normally open contact 11-3 and Large Dump Truck self of limit relay 11 is connected.
Described solenoid valve 1 is three position four-way electromagnetic valve, the oil return inlet T of three position four-way electromagnetic valve is connected with fuel tank 10, the oil-feed port P of three position four-way electromagnetic valve is connected with fuel tank 10 by high-pressure and hydraulic oil pump 7, and two pouring orifice A, B of three position four-way electromagnetic valve 1 are connected with hydraulic pressure stair control cylinder 2.
Described hydraulic pressure stair control cylinder 2 is provided with forced landing and lifting two oil pockets.
The coil 8-2 two ends of described plugging relay 8 oppositely and be connected to the first diode D1, the described first coil 11-1 two ends of rising limit relay 11 oppositely and be connected to the second diode D2, the described second coil 12-1 two ends of rising limit relay 12 oppositely and be connected to the 3rd diode D3, electromagnetic coil 1-1 one end on the left of solenoid valve 1 is connected with one end of buzzer 3 by the 4th diode D4, and the first normally closed interlock 11-2 rising limit relay 11 is connected with one end of buzzer 3 by the 5th diode D4.
Described upper limit position switch and lower position switch are metal induction switch, when have metal near time, it becomes closed state; Hydraulic pressure stair are metal staircase.
By manipulating the first rotary switch 6 or the second rotary switch 14, all can realize the function that stair decline, stair rise and stair keep, simultaneously, the status information of stair can be passed to the controller of dumping car self, with reference to Fig. 2, the present embodiment is described to manipulate the first rotary switch 6 (in figure, the closed contact of X representative), now, the second rotary switch 14 is placed in 0 range state:
Stair rise and keep function: when the first rotary switch 6 being placed in rising gear and keeping this range state, 3rd contact 6-3 of the first rotary switch 6 and the 3rd contact 14-3 of the second rotary switch 14 is all in closed state, electromagnetic coil 1-2 on the right side of solenoid valve 1 obtains electric, hydraulic oil in fuel tank flows into the lifting chamber 2-1 of hydraulic pressure stair control cylinder by high-pressure and hydraulic oil pump 7, the rising realizing stair is stretched out by piston rod, buzzer 3 is blown a whistle simultaneously, upper limit position switch 15 is in off state, the second coil 12-1 rising limit relay 12 must not be electric, the second contact 12-2 rising limit relay 12 closes, decline status indicator lamp 4 brightens, show stair not at upper limit, when stair rise to limit position, upper limit position switch 15 closes, first rises limit relay 11 obtains electric, buzzer 3 stops blowing a whistle, second rise limit relay 12 obtains electric simultaneously, decline status indicator lamp 4 extinguishes, show that stair are in high limit position, keep the electromagnetic coil 1-2 on the right side of solenoid valve 1 to have electricity for a long time simultaneously, the raised state of stair can be kept.
Stair decline function: when dumping car is in vehicle stop state, inputs stop sign by stop sign input end 9, and plugging relay coil obtains electric, and its normally opened contact closes; When the first rotary switch 6 being placed in decline gear and keeping this range state, electromagnetic coil 1-1 on the left of solenoid valve 1 obtains electric, hydraulic oil in fuel tank flows into the decline chamber 2-2 of hydraulic pressure stair control cylinder by high-pressure and hydraulic oil pump 7, the decline of stair is realized by the contraction of piston rod, buzzer 3 obtains electric blowing a whistle simultaneously, warning surrounding work personnel; When it drops to limit position, lower position switch 13 transfers closed state to by off state, and descending spacing tutorial light 5 brightens, and informs staff, and stair decline and put in place, and shut-down operation, the first rotary switch 6 Self-resetting is to 0 grade.
Warning and dumping car chain function: in the process that stair rise or decline, buzzer 3 all has electricity, keeps blowing a whistle, and warning staff does not stand in stair movement region; When plugging relay 8 ensures that dumping car is only in vehicle stop state, just can transfer stair, guarantee that driver only stops just can get off well at dumping car; Limit relay 11 is risen by first, can by the controller of stair state signal transmission to dumping car self, be beneficial to ensure dumping car when driving, stair can not decline and cause damage.
Above detailed introduction is done to several preferred embodiment of the present utility model.Described embodiment just understands core concept of the present utility model for helping.It should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify the protection domain also belonging to the utility model claim.
Claims (9)
1. Large Dump Truck hydraulic pressure stair control system, it is characterized in that, comprise solenoid valve, hydraulic pressure stair control cylinder, buzzer, decline status indicator lamp, descending spacing tutorial light, plugging relay, first rotary switch, second rotary switch, first rises limit relay, lower position switch, upper limit position switch and second rises limit relay, electromagnetic coil one end on the left of solenoid valve is connected with DC electrical source by two rotary switches, electromagnetic coil one end on the left of solenoid valve is also connected with one end of buzzer, the other end ground connection of buzzer, the electromagnetic coil the other end on the left of solenoid valve is by the contact ground connection of plugging relay, coil one end ground connection of plugging relay, the coil the other end of plugging relay is stop sign input end, hydraulic pressure stair control cylinder is connected with hydraulic pressure stair by piston rod, hydraulic pressure stair control cylinder is connected with high-pressure and hydraulic oil pump with fuel tank by solenoid valve, first coil one end of rising limit relay is connected with DC electrical source, first coil and second rising limit relay passes through upper limit position switch ground connection after rising the coils connected in series of limit relay, decline status indicator lamp one end is connected with DC electrical source, the decline status indicator lamp the other end rises the contact ground connection of limit relay by second, first rises the normally closed interlock of limit relay is connected with one end of buzzer, first normally open contact one end of rising limit relay is connected with DC electrical source, first the other end of normally open contact rising limit relay is connected with the 3rd contact of the second rotary switch, the other end of the 3rd contact of the second rotary switch is connected with the electromagnetic coil on the right side of solenoid valve, the electromagnetic coil the other end on the right side of solenoid valve is by the 3rd contact ground connection of the first rotary switch, descending spacing tutorial light one end is connected with DC electrical source, the descending spacing tutorial light the other end is by lower position switch ground connection.
2. Large Dump Truck hydraulic pressure stair control system according to claim 1, it is characterized in that, first rotary switch is located in the operator cabin of dumping car, second rotary switch is located near hydraulic pressure stair, and the first contact of the first rotary switch is with the first contact of the second rotary switch and be connected with the electromagnetic coil one end on the left of solenoid valve after connecing; Three contact of second contact of the first rotary switch with the second contact of the second rotary switch and by the second rotary switch after connecing is connected with the electromagnetic coil on the right side of solenoid valve, then passes through the 3rd contact ground connection of the first knob.
3. Large Dump Truck hydraulic pressure stair control system according to claim 2, it is characterized in that, first rotary switch and the second rotary switch are three gear self-resetting switch, and three gears are respectively 0 gear, decline gear, rising gear, and 0 gear is between decline gear and rising gear.
4. Large Dump Truck hydraulic pressure stair control system according to claim 1 and 2, it is characterized in that, described DC electrical source is 24V DC electrical source.
5. Large Dump Truck hydraulic pressure stair control system according to claim 2, it is characterized in that, described plugging relay is normally opened relay, second rise limit relay is normally closed relay, first rise limit relay is normally-open normally-close interlocking relay, first normally closed interlock rising limit relay is connected between the second contact of the second rotary switch and buzzer, first normally open contact rising limit relay is connected to the 3rd of the second rotary switch the between contact and DC electrical source, first controller rising the normally open contact and Large Dump Truck self of limit relay is connected.
6. Large Dump Truck hydraulic pressure stair control system according to claim 1, it is characterized in that, described solenoid valve is three position four-way electromagnetic valve, the return opening of three position four-way electromagnetic valve is connected with fuel tank, the oil-feed port of three position four-way electromagnetic valve is connected with fuel tank by high-pressure and hydraulic oil pump, and two pouring orifices of three position four-way electromagnetic valve are connected with hydraulic pressure stair control cylinder.
7. Large Dump Truck hydraulic pressure stair control system according to claim 1, is characterized in that, described hydraulic pressure stair control cylinder is provided with lifting and forced landing two oil pockets.
8. Large Dump Truck hydraulic pressure stair control system according to claim 1, it is characterized in that, the coil two ends of described plugging relay are also connected with the first diode, described first rises the coil two ends of limit relay and is connected with the second diode, described second rises the coil two ends of limit relay and is connected with the 3rd diode, electromagnetic coil one end on the left of solenoid valve is connected with one end of buzzer by the 4th diode, and the first normally closed interlock rising limit relay is connected with one end of buzzer by the 5th diode.
9. Large Dump Truck hydraulic pressure stair control system according to claim 1, it is characterized in that, described upper limit position switch and lower position switch are metal induction switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420754078.8U CN204371814U (en) | 2014-12-05 | 2014-12-05 | Large Dump Truck hydraulic pressure stair control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420754078.8U CN204371814U (en) | 2014-12-05 | 2014-12-05 | Large Dump Truck hydraulic pressure stair control system |
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| Publication Number | Publication Date |
|---|---|
| CN204371814U true CN204371814U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420754078.8U Active CN204371814U (en) | 2014-12-05 | 2014-12-05 | Large Dump Truck hydraulic pressure stair control system |
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| Country | Link |
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| CN (1) | CN204371814U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454742A (en) * | 2014-12-05 | 2015-03-25 | 湘电重型装备有限公司 | Hydraulic staircase control system for large-sized dump truck |
-
2014
- 2014-12-05 CN CN201420754078.8U patent/CN204371814U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454742A (en) * | 2014-12-05 | 2015-03-25 | 湘电重型装备有限公司 | Hydraulic staircase control system for large-sized dump truck |
| CN104454742B (en) * | 2014-12-05 | 2016-12-07 | 湘电重型装备有限公司 | A kind of Large Dump Truck hydraulic pressure stair control system |
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