CN114855916A - One-key lifting system for centralized filling platform of ultra-large excavator and control method - Google Patents
One-key lifting system for centralized filling platform of ultra-large excavator and control method Download PDFInfo
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- CN114855916A CN114855916A CN202210605056.4A CN202210605056A CN114855916A CN 114855916 A CN114855916 A CN 114855916A CN 202210605056 A CN202210605056 A CN 202210605056A CN 114855916 A CN114855916 A CN 114855916A
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- platform
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- centralized
- filling platform
- reversing valve
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000003245 working effect Effects 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
Abstract
The invention discloses a one-key lifting system and a control method for a centralized filling platform of an ultra-large excavator, wherein the system comprises a working unit, a primary control unit, a secondary control unit and a detection unit, the working unit comprises the centralized filling lifting platform and a platform lifting oil cylinder, the primary control unit comprises a pilot reversing valve, a pilot oil way, a one-way throttle valve and a pilot pump, the secondary control unit comprises a rocker switch, a control module, an instrument and an electric control circuit, and the monitoring unit comprises a position proximity switch; the platform lift cylinder is fixed on the rotary table, the pilot pump is connected with the pilot reversing valve through a pilot oil path, the pilot reversing valve is connected with the platform lift cylinder through a pilot oil path, an electromagnetic coil of the pilot reversing valve is connected with the control module and the rocker switch, and the instrument and the position proximity switch are connected with the control module. The invention can effectively eliminate various potential safety hazards, realize the simplification of the operation and further improve the working efficiency.
Description
Technical Field
The invention belongs to the technical field of engineering machinery, and particularly relates to a one-key lifting system and a control method for a centralized filling platform of an ultra-large excavator.
Background
The ultra-large excavator has the characteristics of severe working environment, long working period and short halt interval, and the time of general maintenance and filling operation is short, so the efficiency of the maintenance and filling operation is very important; after the function of the centralized filling platform is added into the super-large excavator, the filling operation is facilitated, and the working efficiency is improved, but meanwhile, the lifting control method of the general filling platform is complex, the factors needing to be referred in advance are more, finally, the realization and the operation are complex, the failure rate of equipment and components is high, the filling working efficiency is folded invisibly, and the working efficiency of the excavator is further influenced; therefore, the requirement for simplifying the operation of lifting the filling platform is strong, and the realization of the one-key lifting control method of the centralized filling platform is particularly necessary.
Disclosure of Invention
In order to solve the problems related to the background technology, the invention provides a one-key lifting system and a control method for a centralized filling platform of an ultra-large excavator.
The specific technical scheme of the invention is as follows: a one-key lifting system for a centralized filling platform of an ultra-large excavator comprises a working unit, a primary control unit, a secondary control unit and a detection unit, wherein the working unit comprises the centralized filling lifting platform and a platform lifting oil cylinder, the primary control unit comprises a pilot reversing valve, a pilot oil way, a one-way throttle valve and a pilot pump, the secondary control unit comprises a rocker switch, a control module, an instrument and an electric control circuit, and the monitoring unit comprises a position proximity switch; the platform lift cylinder is fixed in on the revolving stage, the guide's pump links to each other with guide's switching-over valve through the guide's oil circuit, guide's switching-over valve links to each other with platform lift cylinder through the guide's oil circuit, guide's switching-over valve's solenoid is connected with control module and rocker switch, and second grade control unit is connected with one-level control unit, realizes the control requirement of a key operation lift filling platform, instrument, position proximity switch link to each other with control module.
Further, the control module is Lishile RC 28-14/30.
Further, a centralized filling platform is installed, a platform lifting oil cylinder is fixed at a preset position of a rotary table, no other obstacles exist in an action range, smooth extension and retraction of the oil cylinder can be realized by action of the oil cylinder, a pilot reversing valve and a one-way throttle valve are installed and connected with a pilot oil way, the initial value of the opening degree of an outlet of the pilot reversing valve is not adjusted too much, the lifting action is prevented from being too fast, and later-stage debugging can be adjusted according to requirements.
Furthermore, the platform lifting oil cylinder has at least two synchronous actions, so that the stable action of the filling platform is ensured.
Furthermore, a one-way throttle valve is arranged in the pilot oil way to prevent the oil return action of the oil cylinder caused by the self weight of the centralized filling platform.
Further, the rocker switch is installed in the driver's cabin, the instrument is installed in the driver's cabin.
Furthermore, the position of the position proximity switch corresponds to the upper limit position of the centralized filling platform, the distance from the detection point to the position proximity switch meets the requirement, and the distance is not too far or too close, and is generally kept within 10mm according to the installation requirement of the sensor.
Furthermore, the rocker switch is a switch with a self-locking function.
Furthermore, the position proximity switch signal is received through a configuration control module and added into the control logic of the whole vehicle action; when the switching signal of the rocker switch is sent, the control module can judge the state of the whole vehicle in advance so as to determine whether to open/close the pilot reversing valve and further control the lifting of the centralized filling platform.
A control method for a one-key lifting system of a centralized filling platform of an ultra-large excavator is characterized by comprising the following steps:
s1, operating a rocker switch in a cab to switch one-key states, and connecting a control module to an electromagnetic coil for controlling a pilot reversing valve through an electric control circuit after the rocker switch acts;
s2, the pilot reversing valve performs action switching to achieve oil inlet and oil return of the large cavity and the small cavity of the centralized filling platform, the centralized filling platform is driven to put down and retract, and finally the action requirement of lifting of the centralized filling platform is met.
And S3, the control module needs to add data of the position proximity switch into a protection mechanism of the whole excavator, when the position proximity switch does not detect a signal, namely the filling platform does not reach an upper limit, at the moment, the control module can judge that the excavator is in a fault state of filling or not rising of the filling platform, and needs to forbid the excavator to carry out any working action, meanwhile, in the working process of the excavator, in order to avoid misoperation of the filling platform, the control module needs to judge that the excavator state does not send a signal to the pilot reversing valve, namely the excavator is in a working state, namely a pilot switch handle is in an open state, the control module can judge that the switch action is not executed, the excavator is not in the working state, namely the pilot switch handle is not in the open state, and the control module can execute the switch action.
Further, in step S2, the opening of the outlet of the pilot reversing valve is adjusted to adjust the amount of oil in the pilot oil path leading to the platform lift cylinder, so that the operating speed of the lift cylinder is stabilized, the operating speed of the platform is stably centralized, and the adjustment of the movement speed is realized; the pilot oil circuit mainly refers to a control oil circuit for driving a control electromagnetic valve on the excavator, a main pump is driven by an engine to generate pressure, the control oil circuit is generally used for controlling low-pressure control elements such as the pilot electromagnetic valve, a stair pump, centralized lubrication, a centralized filling platform lifting and the like, the centralized filling pilot oil circuit is a branch oil circuit of the whole-automobile pilot oil circuit, and two branch oil circuits are respectively connected with a large cavity and a small cavity of a lifting oil cylinder.
The invention has the advantages that; the control method is a control method for one-key lifting of the centralized filling platform of the ultra-large excavator, and after test debugging, the lifting of the centralized filling platform can be operated smoothly and efficiently; the addition of the position sensor and the one-way throttle valve can effectively eliminate various potential safety hazards, a simple instrument icon display method is convenient for a driver to clearly check the state of the filling platform, and the one-key switch can simplify the operation and further improve the working efficiency.
Drawings
FIG. 1 is an electro-hydraulic block diagram of the present invention;
FIG. 2 is a pictorial view of a centralized refueling instrument display icon of the present invention;
in the figure: 1. a pilot pump; 2. a pilot operated directional control valve; 3. a one-way throttle valve; 4. a first platform lifting oil cylinder; 5. a second platform lifting oil cylinder; 6. a control module; 7. a meter; 8. a position proximity switch; 9. a rocker switch.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a one-key lifting system for a centralized filling platform of an ultra-large excavator comprises a working unit, a primary control unit, a secondary control unit and a detection unit, wherein the working unit comprises the centralized filling lifting platform, a platform lifting oil cylinder I4 and a platform lifting oil cylinder II 5, the primary control unit comprises a pilot reversing valve 2, a pilot oil way, a one-way throttle valve 3 and a pilot pump 1, the secondary control unit comprises a rocker switch 9, a control module 6, an instrument 7 and an electric control circuit, and the monitoring unit comprises a position proximity switch 8; the first platform lifting oil cylinder 4 and the second platform lifting oil cylinder 5 are fixed on the rotary table, the pilot pump 1 is connected with the pilot reversing valve 2 through a pilot oil path, the pilot reversing valve 2 is connected with the first platform lifting oil cylinder 4 and the second platform lifting oil cylinder 5 through a pilot oil path, an electromagnetic coil of the pilot reversing valve 2 is connected with the control module 6 and the rocker switch 9, and the instrument 7 and the position proximity switch 8 are connected with the control module 6.
When the excavator is started, the initial state of the pilot reversing valve 2 is forward conduction, the first platform lifting oil cylinder 4 and the second platform lifting oil cylinder 5 are both small-cavity oil inlet and large-cavity oil return, the oil cylinders move to the top and are in a locking state of continuous pressure, and the centralized filling platform is driven to be in a retracted state all the time.
When a driver manually operates the rocker switch 9, the control module 6 receives a command of putting down the filling platform, and the control module 6 judges whether the following conditions are met according to the working condition of the excavator:
1. whether the position proximity switch is at the upper limit position or not;
2. the excavator does not perform other operation.
When the condition is satisfied, an action instruction for switching the reversing valve can be output, and the pilot reversing valve 2 performs reversing action after receiving the instruction.
After the pilot reversing valve 2 performs reversing action, the first platform lifting oil cylinder 4 and the second platform lifting oil cylinder 5 are changed into oil feeding in the large cavity and oil returning in the small cavity, the oil cylinders move to the top and are in a locking state of continuous pressure, the centralized filling platform is driven to be put down and finally kept in a putting-down state, and filling operation can be performed after the excavator is flamed out.
After the filling operation is finished, the excavator is restarted, at the moment, the driver operates the rocker switch 9 again, and the control module 6 receives a control instruction for the filling platform to be retracted; meanwhile, the position proximity switch 8 is not located at the upper limit position, the control module 6 can output an action instruction for switching the pilot reversing valve 2, the pilot reversing valve 2 can perform reversing action after receiving the instruction, the pilot reversing valve 2 returns to the initial forward conduction state at the moment, the oil cylinder acts to the top point, the centralized filling platform is driven to act to the top point and is located in the continuous pressure retraction locking state, and one operation cycle is finished at the moment.
When the excavator is extinguished and is in a long-term shutdown state, the pressure in the pilot oil way can generate oil drainage phenomenon due to the gravity of some mechanical mechanisms, and in order to avoid the filling platform from falling due to self weight, the one-way throttle valve 3 is added, so that the oil return phenomenon of the pilot oil way can be effectively reduced.
As shown in fig. 2, two states of the centralized filling platform can be displayed by the control instrument, and the specific style is as shown in the figure, when the centralized filling platform is in a down state, the icon is in a red flashing state; when the centralized filling platform is in a retracted state, the icons are in a white non-flashing state, and the position state of the centralized filling platform can be prompted to a driver in real time.
The method for switching the lifting state of the centralized filling platform by one key greatly simplifies the retraction operation of the filling platform, improves the operation efficiency and simultaneously ensures the operation safety.
The foregoing is illustrative of the present invention and its embodiments, and the description is not limiting. The embodiment shown in the drawings is only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, without departing from the spirit of the present invention, a person skilled in the art shall appreciate that the present invention shall not be limited to the embodiments shown in the drawings.
Claims (8)
1. The utility model provides a be used for super large-scale excavator to concentrate filling platform key operating system which characterized in that: the centralized filling platform one-key lifting system of the ultra-large excavator comprises a working unit, a primary control unit, a secondary control unit and a detection unit, wherein the working unit comprises a centralized filling lifting platform and a platform lifting oil cylinder, the primary control unit comprises a pilot reversing valve, a pilot oil way, a one-way throttle valve and a pilot pump, the secondary control unit comprises a rocker switch, a control module, an instrument and an electric control circuit, and the monitoring unit comprises a position proximity switch; the platform lifting oil cylinder is fixed on the rotary table, the pilot pump is connected with the pilot reversing valve through the pilot oil way, the pilot reversing valve is connected with the platform lifting oil cylinder through the pilot oil way, an electromagnetic coil of the pilot reversing valve is connected with the control module and the rocker switch, and the instrument and the position proximity switch are connected with the control module.
2. The one-key lifting system for the centralized filling platform of the ultra-large excavator according to claim 1, wherein the one-key lifting system comprises: the number of the platform lifting oil cylinders is not less than 2, and the platform lifting oil cylinders synchronously act, so that the filling platform is ensured to act stably.
3. The one-key lifting system for the centralized filling platform of the ultra-large excavator according to claim 1, wherein the one-key lifting system comprises: and a one-way throttle valve is arranged in the pilot oil way to prevent the oil return action of the oil cylinder caused by the dead weight of the centralized filling platform.
4. The one-key lifting system for the centralized filling platform of the ultra-large excavator according to claim 1, wherein the one-key lifting system comprises: the rocker switch is installed in the cab, and the instrument is installed in the cab.
5. The one-key lifting system for the centralized filling platform of the ultra-large excavator according to claim 1, wherein the one-key lifting system comprises: the position of the position proximity switch corresponds to the upper limit position of the centralized filling platform.
6. The one-key lifting system for the centralized filling platform of the ultra-large excavator according to claim 1, wherein the one-key lifting system comprises: the rocker switch is a switch with a self-locking function.
7. The control method for the one-key lifting system of the centralized filling platform of the ultra-large excavator according to any one of claims 1 to 5, characterized by comprising the following steps:
s1, operating a rocker switch in a cab to switch one-key states, and connecting a control module to an electromagnetic coil for controlling a pilot reversing valve through an electric control circuit after the rocker switch acts;
s2, the pilot reversing valve performs action switching to realize oil inlet and oil return of large and small cavities of the centralized filling platform, so that the centralized filling platform is driven to put down and retract, and the action requirement of lifting of the centralized filling platform is finally completed;
s3, the control module needs to add data of the position proximity switch into a protection mechanism of the whole excavator, when the position proximity switch does not detect a signal, namely the filling platform does not reach an upper limit, at the moment, the control module can judge that the excavator is in a fault state of filling or not rising, the excavator needs to be forbidden to carry out any working action, and meanwhile, in the working process of the excavator, in order to avoid misoperation of the filling platform, the control module judges whether the excavator is operated by the excavator state to send a signal to a pilot reversing valve or not, and potential safety hazards are avoided.
8. The control method for the one-key lifting system of the centralized filling platform of the ultra-large excavator according to claim 7, wherein the control method comprises the following steps: in the step S2, the opening of the outlet of the pilot reversing valve is adjusted to adjust the amount of oil in the pilot oil path leading to the platform lift cylinder, so that the motion speed of the lift cylinder is stabilized, the motion speed of the platform is stably centralized, and the motion speed is adjusted.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210605056.4A CN114855916B (en) | 2022-05-31 | 2022-05-31 | One-key lifting system for centralized filling platform of ultra-large excavator and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210605056.4A CN114855916B (en) | 2022-05-31 | 2022-05-31 | One-key lifting system for centralized filling platform of ultra-large excavator and control method |
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| CN114855916A true CN114855916A (en) | 2022-08-05 |
| CN114855916B CN114855916B (en) | 2024-01-02 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202897848U (en) * | 2012-09-07 | 2013-04-24 | 上海三一科技有限公司 | Mast pulling servo control hydraulic system and crane |
| CN208324111U (en) * | 2018-05-28 | 2019-01-04 | 佛山市台进精密机械有限公司 | A kind of injection moulding machine mode-locking oil circuit safety control system |
| CN110094382A (en) * | 2019-06-04 | 2019-08-06 | 徐州徐工挖掘机械有限公司 | A kind of fast replacing device hydraulic control system |
| CN112064714A (en) * | 2020-08-26 | 2020-12-11 | 合肥工业大学 | Novel hydraulic excavator flow control system |
| CN114370593A (en) * | 2021-12-15 | 2022-04-19 | 中联重科土方机械有限公司 | Grease filling hydraulic system and engineering machinery |
-
2022
- 2022-05-31 CN CN202210605056.4A patent/CN114855916B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202897848U (en) * | 2012-09-07 | 2013-04-24 | 上海三一科技有限公司 | Mast pulling servo control hydraulic system and crane |
| CN208324111U (en) * | 2018-05-28 | 2019-01-04 | 佛山市台进精密机械有限公司 | A kind of injection moulding machine mode-locking oil circuit safety control system |
| CN110094382A (en) * | 2019-06-04 | 2019-08-06 | 徐州徐工挖掘机械有限公司 | A kind of fast replacing device hydraulic control system |
| CN112064714A (en) * | 2020-08-26 | 2020-12-11 | 合肥工业大学 | Novel hydraulic excavator flow control system |
| CN114370593A (en) * | 2021-12-15 | 2022-04-19 | 中联重科土方机械有限公司 | Grease filling hydraulic system and engineering machinery |
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| CN114855916B (en) | 2024-01-02 |
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