CN203715208U - Automatic speed regulation control system of engine of insulated overhead working truck - Google Patents
Automatic speed regulation control system of engine of insulated overhead working truck Download PDFInfo
- Publication number
- CN203715208U CN203715208U CN201420026747.XU CN201420026747U CN203715208U CN 203715208 U CN203715208 U CN 203715208U CN 201420026747 U CN201420026747 U CN 201420026747U CN 203715208 U CN203715208 U CN 203715208U
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- load
- way valve
- sensitive
- valve
- speed regulation
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- 239000002828 fuel tank Substances 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 239000010720 hydraulic oil Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005684 electric field Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 230000009131 signaling function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model relates to an automatic speed regulation control system of an engine of an insulated overhead working truck. The automatic speed regulation control system is provided with elements such as a load sensitive manual hydraulic control proportional multi-way valve, a load sensitive manual multi-way valve, a pressure relay, a throttle controller and a relay. The automatic speed regulation control system is used for converting the hydraulic energy into the electric energy through the pressure relay according to a feedback load pressure signal which is generated by the hydraulic oil which leads to an executive element through the load sensitive manual hydraulic control proportional multi-way valve and the load sensitive manual multi-way valve so as to control the rotating speed of the engine automatically and the automatic speed regulation control on the high, medium and low three gears of speed of the engine is implemented through a set value of the rotating speed due to the fact that the requirements for oil supply are different according to different action conditions of the executive element. The automatic speed regulation control system of the engine of the insulated overhead working truck is reasonable in structural design, not affected by the interference of the high electric field and high magnetic field, safe, reliable, efficient and good in energy-saving effect, wide in application range and good in economic efficiency.
Description
Technical field
The utility model relates to a kind of insulated type aloft work car engine automatic speed regulation control system, is mainly used in the driving engine automatic speed regulation of insulated type aerial platform.
Background technology
Directly stretch at present formula insulated type aerial platform, adopt optical cable transmission and opto-electronic conversion to carry out the high, medium and low third speed automatic speed regulation of engine speed control, cost is high, Installation and Debugging are difficult, inconvenient maintenance; Signal be subject to high electric field, highfield disturbing influence, easily make mistakes, affect safety.
Collapsible and hybrid insulated type aerial platform, driving engine generally can not speed governing, turns round at a high speed all the time with one, and energy consumption is large, noise is large, hydraulic efficiency pressure system is easily generated heat.
Utility model content
Technical problem to be solved in the utility model is to overcome existing above-mentioned deficiency in prior art, and design is a kind of rational in infrastructure, simple to operate, safe, reliable, efficient, energy-conservation, can effectively realize the insulated type aloft work car engine automatic speed regulation control system of driving engine automatic speed regulation.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of insulated type aloft work car engine automatic speed regulation control system, described aerial platform comprises car chassis, turntable, jib, working bucket, turntable control box, working bucket operator's station and power element, turntable is arranged on car chassis, the two ends of jib are connected with turntable and working bucket respectively, turntable control box is arranged on turntable, working bucket operator's station is arranged in working bucket, and power element is connected with turntable control box and jib respectively; It is characterized in that: described driving engine automatic speed regulation control system comprises driving engine, Hydraulic Pump, the hand hydraulically controlled proportional multi-way valve of load-sensitive, load-sensitive manual multiple-way valve, a pressure relay, No. two pressure relayes, accel control, relay and fuel tanks, the hand hydraulically controlled proportional multi-way valve of load-sensitive, a pressure relay, No. two pressure relayes are arranged in turntable control box, load-sensitive manual multiple-way valve is arranged in working bucket operator's station, and driving engine, Hydraulic Pump, fuel tank, accel control and relay are arranged in car chassis.
Described fuel tank is connected with Hydraulic Pump, driving engine is connected with Hydraulic Pump, between the hand hydraulically controlled proportional multi-way valve of Hydraulic Pump and load-sensitive, load-sensitive manual multiple-way valve, be connected respectively by pipeline, the hand hydraulically controlled proportional multi-way valve of load-sensitive, load-sensitive manual multiple-way valve are connected by pipeline with power element respectively.
Described relay is arranged on accel control, accel control is connected with driving engine, a pressure relay, No. two pressure relayes are electrically connected with accel control, No. one pressure relay is electrically connected with the hand hydraulically controlled proportional multi-way valve of load-sensitive, and No. two pressure relay is electrically connected with load-sensitive manual multiple-way valve.
On the hand hydraulically controlled proportional multi-way valve of described load-sensitive, be provided with a three-way flow regulating valve, three-way flow regulating valve is connected with Hydraulic Pump and fuel tank respectively.
The hand hydraulically controlled proportional multi-way valve of load-sensitive described in the utility model comprises at least 3 control cock, and each control cock is in parallel mutually, and each control cock is connected with a power element respectively.
In each control cock described in the utility model, be provided with one number service road and No. two paths, one number service is provided with shuttle valve on road, and one number service road connects with three-way flow regulating valve, a pressure relay respectively, and No. two path is connected by pipeline with fuel tank.
Load-sensitive manual multiple-way valve described in the utility model comprises at least 3 hand valves, and each hand valve is in parallel mutually, and each hand valve is connected with a power element respectively.
On each hand valve described in the utility model, be provided with No. three paths and No. four paths, on No. three paths, be provided with shuttle valve, No. three path is connected with three-way flow regulating valve, No. two pressure relayes, a pressure relay respectively, and No. four path is connected by pipeline with fuel tank.
The utility model compared with prior art, has following positive effect: reasonable in design, and the setting value of rotating speed is the demand difference to delivery quality according to the different running-active status of power element, implements the high, medium and low third speed automatic speed regulation of driving engine control; This system is not subject to the disturbing influence of high electric field, highfield, safe, reliable, efficient, energy-conservation, applied widely, good economy performance.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model high and medium Operation Van.
Detailed description of the invention
Below in conjunction with accompanying drawing and by embodiment, the utility model is described in further detail.
Embodiment:
Referring to Fig. 1～Fig. 2, in the present embodiment, aerial platform comprises car chassis 51, turntable 52, jib 53, working bucket 54, turntable control box 55, working bucket operator's station 56 and power element 8, turntable 52 is arranged on car chassis, the two ends of jib 53 are connected with turntable 52 and working bucket 54 respectively, turntable control box 55 is arranged on turntable 52, and working bucket operator's station 56 is arranged in working bucket 54, and power element 8 is connected with turntable control box 55 and jib 53 respectively.
Described driving engine automatic speed regulation control system comprises driving engine 1, Hydraulic Pump 2, the hand hydraulically controlled proportional multi-way valve 3 of load-sensitive, load-sensitive manual multiple-way valve 4, pressure relay 5, No. two pressure relayes 6, accel control 7, relay 8 and fuel tanks 10.
The hand hydraulically controlled proportional multi-way valve of load-sensitive 3, pressure relay 5, No. two pressure relayes 6 are arranged in turntable control box 55, load-sensitive manual multiple-way valve 4 is arranged in working bucket operator's station 56, and driving engine 1, Hydraulic Pump 2, fuel tank 10, accel control 7 and relay 8 are arranged in car chassis 51.
Described fuel tank 10 is connected with Hydraulic Pump 2, driving engine 1 is connected with Hydraulic Pump 2, between the hand hydraulically controlled proportional multi-way valve 3 of Hydraulic Pump 2 and load-sensitive, load-sensitive manual multiple-way valve 4, be connected respectively by pipeline, the hand hydraulically controlled proportional multi-way valve 3 of load-sensitive, load-sensitive manual multiple-way valve 4 are connected by pipeline with power element 9 respectively.
Described relay 8 is arranged on accel control 7, accel control 7 is connected with driving engine 1, pressure relay 5, No. two pressure relayes 6 are electrically connected with accel control 7, No. one pressure relay 5 is electrically connected with the hand hydraulically controlled proportional multi-way valve 3 of load-sensitive, and No. two pressure relay 6 is electrically connected with load-sensitive manual multiple-way valve 4.
On the hand hydraulically controlled proportional multi-way valve 3 of described load-sensitive, be provided with a three-way flow regulating valve 31, three-way flow regulating valve 31 is connected with Hydraulic Pump 2 and fuel tank 10 respectively.
In the present embodiment, the hand hydraulically controlled proportional multi-way valve 3 of load-sensitive comprises 4 control cock 32, and each control cock 32 is in parallel mutually, and each control cock 32 is connected with a power element 9 respectively.
In the present embodiment, in each control cock 32, be provided with one number service road 33 and No. two paths 34, on one number service road 33, be provided with shuttle valve 35, one number service road 33 connects with three-way flow regulating valve 31, a pressure relay 5 respectively, and No. two path 34 is connected by pipeline with fuel tank 10.
In the present embodiment, load-sensitive manual multiple-way valve 4 comprises 3 hand valves 41, and each hand valve 41 is in parallel mutually, and each hand valve 41 is connected with a power element 9 respectively.
In the present embodiment, on each hand valve 41, be provided with No. three paths 42 and No. four paths 43, on No. three paths 42, be provided with shuttle valve 35, No. three paths 42 are connected with three-way flow regulating valve 31, No. two pressure relayes 6, a pressure relay 5 respectively, and No. four path 43 is connected by pipeline with fuel tank 10.
The principle of work of the present embodiment:
1. the responsive hand hydraulically controlled proportional multi-way valve 3 of service load.
(1) manual or one of them control cock 32 of hydraulic controlled operation, makes spool produce displacement, and valve port is opened, and hydraulic oil enters power element 9;
(2) come from hydraulic oil in power element 9 and produce feedback load pressure LS signal, this LS model is converged to shuttle valve 35 through one number service road 33, on pressure relay 5 and three-way flow regulating valve 31;
(3) in the time that feedback load pressure LS signal reaches the force value that pressure relay 5 sets, No. one pressure relay 5 is connected, and output electrical signals, electric signal is the speed end 71 to accel control 7 through relay 8, driving engine 1 is changed at a high speed from low speed rotation, and drive Hydraulic Pump 2 to increase delivery quality, thus improving the responsiveness of each power element 9 and the work efficiency of car load, flow unnecessary in system returns to fuel tank 10 by three-way flow regulating valve 31;
(4) operation control valve 32, make spool produce displacement, while returning to meta, valve port is closed, delivery rate is zero, power element 9 is failure to actuate, feedback load pressure LS signal is by No. two path 34 releases, in the time that feedback load pressure LS signal is less than the force value that pressure relay 5 sets, No. one pressure relay 5 disconnects, the electric signal that leads to accel control 7 speed end 71 interrupts, driving engine 1 is by transferring at a high speed low speed to, drive Hydraulic Pump 2 to reduce delivery quality, oil mass unnecessary in system is returned to fuel tank 10 by the three-way flow regulating valve 31 in the hand hydraulically controlled proportional multi-way valve 3 of load-sensitive, reach energy-conservation, the speed control effect of noise reduction.
If operate two above control cock 32 simultaneously, its principle is same as described above.Difference is, come from the feedback load pressure LS signal that the hydraulic oil in each power element 9 produces, with higher load pressure LS signal function, on pressure relay 5 and three-way flow regulating valve 31, lower load pressure signal is closed through shuttle valve 35 by higher load pressure signal.
In the present embodiment, the power element 9 of 4 control cock 32 correspondences is respectively underarm element 91, pivoted member 92, crook one's arm element 93 and telescopic element 94, for controlling the lifting action of jib 53 and the revolution of turntable 52 action.
2. the responsive manual multiple-way valve 4 of service load.
(1) one of them hand valve 41 of M/C, makes spool produce displacement, and valve port is opened, and hydraulic oil enters power element 9;
(2) come from hydraulic oil in power element 9 and produce feedback load pressure LS signal, this LS signal converges to shuttle valve 35 through No. three paths 42, lead on three-way flow regulating valve 31, and according to this on No. two pressure relayes 6, a pressure relay 5;
(3) force value of setting due to No. two pressure relayes 6 is less than the force value that pressure relay 5 is set, in the time that feedback load pressure LS signal reaches the force value that No. two pressure relayes 6 set, No. two pressure relay 6 is connected, output electrical signals leads to the middling speed end 72 of relay 8 and accel control 7 simultaneously, driving engine 1 transfers middling speed to from low speed, relay 8 is connected, and cuts off the signal path that comes from pressure relay 5 and speed end 71;
(4) when system pressure continues to raise while reaching the force value that pressure relay 5 sets, No. one pressure relay 5 is connected, but the electric signal of output is cut off, driving engine 1, in middling speed operative condition, drives Hydraulic Pump 2 to export the required flow of power element 9; In system, the unnecessary flow three-way flow regulating valve 31 in the hand hydraulically controlled proportional multi-way valve 3 of load-sensitive returns to fuel tank 10;
(5) operation hand valve 41, make spool produce displacement, while returning to meta, valve port is closed, delivery rate is zero, and power element 9 is failure to actuate, and feedback load pressure LS signal is by No. four path 43 releases, in the time that feedback load pressure LS signal is less than No. two pressure relay 6 pressure set points, No. two pressure relayes 6 disconnect, lead to the electric signal interruption of accel control 7 middling speed ends 72; Simultaneously, relay 8 power-off, speed end 71 signals are connected, now a pressure relay 5 has disconnected, driving engine 1 transfers low speed to by middling speed, drive Hydraulic Pump 2 to reduce delivery quality, oil mass unnecessary in system is returned to fuel tank 10 by the three-way flow regulating valve 31 in the hand hydraulically controlled proportional multi-way valve 33 of load-sensitive, reaches speed control effect energy-conservation, noise reduction.
If operate two above hand valves 41 simultaneously, its principle is same as described above.Difference is, come from the feedback load pressure LS signal that the hydraulic oil in each power element 9 produces, with higher load pressure LS signal function, on pressure relay 5, No. two pressure relayes 6 and three-way flow regulating valve 31, lower load pressure signal is closed through shuttle valve 35 by higher load pressure signal.
In the present embodiment, the power element 9 of 3 hand valve 41 correspondences is respectively bucket lifting element 95, bucket swing element 96 and the little element 97 that hangs, for controlling swing, lifting action and the little lifting action that hangs of working bucket 54.
In the present embodiment, insulated type aloft work car engine 1 automatic speed regulation control system is according to the accurately high, medium and low third gear rotating speed of control engine 1 of the feedback load pressure LS signal in valve, the different responsiveness requirements of each actuating unit while having met aerial platform operation, reach speed control effect energy-conservation, noise reduction, increase work efficiency.
In addition, it should be noted that, the specific embodiment described in this specification sheets, as long as the undeclared concrete shape of its part and size, this part can be any shape and size that adapt with its structure; Meanwhile, the title that part is got also can be different.All equivalence or simple change of doing according to described structure, feature and the principle of the utility model patent design, are included in the protection domain of the utility model patent.
Claims (5)
1. an insulated type aloft work car engine automatic speed regulation control system, described aerial platform comprises car chassis, turntable, jib, working bucket, turntable control box, working bucket operator's station and power element, turntable is arranged on car chassis, the two ends of jib are connected with turntable and working bucket respectively, turntable control box is arranged on turntable, working bucket operator's station is arranged in working bucket, and power element is connected with turntable control box and jib respectively;
It is characterized in that: described driving engine automatic speed regulation control system comprises driving engine, Hydraulic Pump, the hand hydraulically controlled proportional multi-way valve of load-sensitive, load-sensitive manual multiple-way valve, a pressure relay, No. two pressure relayes, accel control, relay and fuel tanks
The hand hydraulically controlled proportional multi-way valve of load-sensitive, a pressure relay, No. two pressure relayes are arranged in turntable control box, load-sensitive manual multiple-way valve is arranged in working bucket operator's station, driving engine, Hydraulic Pump, fuel tank, accel control and relay are arranged in car chassis
Described fuel tank is connected with Hydraulic Pump, driving engine is connected with Hydraulic Pump, between the hand hydraulically controlled proportional multi-way valve of Hydraulic Pump and load-sensitive, load-sensitive manual multiple-way valve, be connected respectively by pipeline, the hand hydraulically controlled proportional multi-way valve of load-sensitive, load-sensitive manual multiple-way valve are connected by pipeline with power element respectively;
Described relay is arranged on accel control, accel control is connected with driving engine, a pressure relay, No. two pressure relayes are electrically connected with accel control, No. one pressure relay is electrically connected with the hand hydraulically controlled proportional multi-way valve of load-sensitive, and No. two pressure relay is electrically connected with load-sensitive manual multiple-way valve;
On the hand hydraulically controlled proportional multi-way valve of described load-sensitive, be provided with a three-way flow regulating valve, three-way flow regulating valve is connected with Hydraulic Pump and fuel tank respectively.
2. insulated type aloft work car engine automatic speed regulation control system according to claim 1, it is characterized in that: the hand hydraulically controlled proportional multi-way valve of described load-sensitive comprises at least 3 control cock, each control cock is in parallel mutually, and each control cock is connected with a power element respectively.
3. the insulated type aloft work car engine automatic speed regulation control system of stating according to claim 2, it is characterized in that: in described each control cock, be provided with one number service road and No. two paths, one number service is provided with shuttle valve on road, one number service road connects with three-way flow regulating valve, a pressure relay respectively, and No. two path is connected by pipeline with fuel tank.
4. insulated type aloft work car engine automatic speed regulation control system according to claim 1 and 2, it is characterized in that: described load-sensitive manual multiple-way valve comprises at least 3 hand valves, each hand valve is in parallel mutually, and each hand valve is connected with a power element respectively.
5. insulated type aloft work car engine automatic speed regulation control system according to claim 4, it is characterized in that: on described each hand valve, be provided with No. three paths and No. four paths, on No. three paths, be provided with shuttle valve, No. three path is connected with three-way flow regulating valve, No. two pressure relayes, a pressure relay respectively, and No. four path is connected by pipeline with fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026747.XU CN203715208U (en) | 2014-01-16 | 2014-01-16 | Automatic speed regulation control system of engine of insulated overhead working truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026747.XU CN203715208U (en) | 2014-01-16 | 2014-01-16 | Automatic speed regulation control system of engine of insulated overhead working truck |
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| Publication Number | Publication Date |
|---|---|
| CN203715208U true CN203715208U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420026747.XU Expired - Lifetime CN203715208U (en) | 2014-01-16 | 2014-01-16 | Automatic speed regulation control system of engine of insulated overhead working truck |
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| CN (1) | CN203715208U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179383A (en) * | 2015-09-28 | 2015-12-23 | 北汽福田汽车股份有限公司 | Engineering machinery, hydraulic system for constant displacement pump of engineering machinery and controlling method of hydraulic system |
-
2014
- 2014-01-16 CN CN201420026747.XU patent/CN203715208U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179383A (en) * | 2015-09-28 | 2015-12-23 | 北汽福田汽车股份有限公司 | Engineering machinery, hydraulic system for constant displacement pump of engineering machinery and controlling method of hydraulic system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |
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| CX01 | Expiry of patent term |