CN114855916B - 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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- CN114855916B CN114855916B CN202210605056.4A CN202210605056A CN114855916B CN 114855916 B CN114855916 B CN 114855916B CN 202210605056 A CN202210605056 A CN 202210605056A CN 114855916 B CN114855916 B CN 114855916B
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- filling platform
- lifting
- excavator
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 230000003245 working effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004397 blinking Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000002474 experimental method 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
- 238000012544 monitoring process Methods 0.000 description 1
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 for a centralized filling platform of an ultra-large excavator and a control method, wherein the system comprises a working unit, a primary control unit, a secondary control unit and a detection unit, 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 detection unit comprises a position proximity switch; the platform lifting oil cylinder is fixed on the turntable, the pilot pump is connected with the pilot reversing valve through a pilot oil path, the pilot reversing valve is connected with the platform lifting oil 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, simplify 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 for a centralized filling platform of an ultra-large excavator and a control method.
Background
The ultra-large excavator has the characteristics of severe working environment, long working period and short stopping interval, and the time of general maintenance and filling operation is short, so that the efficiency of the maintenance and filling operation is extremely important; after the function of the centralized filling platform is added from the ultra-large excavator, filling operation is facilitated, and working efficiency is improved, but at the same time, a lifting control method of a common filling platform is complex, factors needing to be referenced in advance are more, finally, realization and operation are complicated, the failure rate of equipment and components is high, and the filling working efficiency is discounted in an intangible way, so that the working efficiency of the excavator is influenced; therefore, the requirement of 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 for a centralized filling platform of an ultra-large excavator and a control method.
The specific technical scheme of the invention is as follows: the utility model provides a be used for ultra-large excavator concentrated filling platform key operating system, includes work unit, one-level control unit, second grade control unit and detecting element, work unit is including concentrated filling elevating platform, platform lift cylinder, one-level control unit includes guide switching-over valve, guide oil circuit, one-way choke valve, guide pump, second grade control unit includes wane switch, control module, instrument, electric control line, the monitoring element includes the position proximity switch; the platform lifting oil cylinder is fixed on the turntable, the pilot pump is connected with the pilot reversing valve through a pilot oil path, the pilot reversing valve is connected with the platform lifting oil cylinder through a pilot oil path, an electromagnetic coil of the pilot reversing valve is connected with the control module and the rocker switch, the secondary control unit is connected with the primary control unit, the control requirement of one-key operation lifting filling platform is met, and the instrument and the position proximity switch are connected with the control module.
Further, the control module selects Lishile RC28-14/30.
Further, a centralized filling platform is installed, a lifting oil cylinder of the platform is fixed at a preset position of a turntable, no other barriers exist in an action range, smooth extension and retraction of the oil cylinder action can be achieved, a pilot reversing valve and a one-way throttle valve are installed and connected with a pilot oil path, the initial value of the opening of an outlet of the pilot reversing valve is not required to be adjusted too much, the lifting action is prevented from being too fast, and later debugging can be adjusted according to requirements.
Further, at least two platform lifting cylinders synchronously act, so that stable action of the filling platform is ensured.
Further, a one-way throttle valve is arranged in the pilot oil path to prevent the oil return action of the oil cylinder caused by the dead weight of the centralized filling platform.
Further, the rocker switch is installed in the cab, and the meter is installed in the cab.
Further, the position of the position proximity switch corresponds to the limit position on the centralized filling platform, and the distance from the detection point to the position proximity switch should meet the requirement, should not be too far or too close, and is generally kept within 10mm according to the installation requirement of the sensor.
Further, the rocker switch is a switch with a self-locking function.
Further, the position proximity switch signal is received through the configuration control module, and is added into the control logic of the whole vehicle action; when the switching signal of the rocker switch is sent out, the control module can judge the state of the whole vehicle in advance, so that whether the pilot reversing valve is opened/closed is determined, and the lifting of the centralized filling platform is controlled.
The control method for the one-key lifting system of the centralized filling platform of the ultra-large excavator is characterized by comprising the following steps of:
s1, operating a rocker switch in a cab to switch a one-key state, and connecting a control module to control an electromagnetic coil of a pilot reversing valve through an electrical 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, drives the centralized filling platform to be put down and retracted, and finally meets the action requirement of lifting of the centralized filling platform.
S3, the control module is required to add the data of the position proximity switch into a protection mechanism of the whole vehicle of the excavator, when the position proximity switch does not detect a signal, namely the filling platform does not reach the upper limit, at the moment, the control module can judge that the excavator is in a fault state of filling or the filling platform does not rise, any working action is required to be forbidden by the excavator, meanwhile, in the working process of the excavator, in order to avoid misoperation of the filling platform, the control module is required to judge that the state of the excavator does not send a signal to the pilot reversing valve, namely the excavator is in a working state, namely the pilot switch handle is in an opening state, the control module can judge that the excavator does not execute a switching action, namely the excavator is in a working state, namely the pilot switch handle is not in an opening state, and the control module can execute the switching action.
Further, in step S2, the oil quantity in the pilot oil path leading to the lifting cylinder of the platform is adjusted by adjusting the opening of the outlet of the pilot reversing valve, so that the action speed of the lifting cylinder is stable, the action speed of the filling platform is stabilized and concentrated, and the adjustment of the movement speed is realized; the pilot oil way mainly refers to a control oil way of a driving control electromagnetic valve on the excavator, and the engine drives a main pump to generate pressure, and is generally used for controlling low-pressure control elements such as the pilot electromagnetic valve, a stair pump, centralized lubrication, lifting of a centralized filling platform and the like, wherein the centralized filling pilot oil way is a branch oil way of a full-vehicle pilot oil way, and two branch oil ways are respectively connected with a large cavity and a small cavity of a lifting oil cylinder.
The invention has the beneficial effects that; the control method is used for controlling the centralized filling platform of the ultra-large excavator to lift by one key, and after the experiment and the debugging are carried out, the smooth and efficient operation of lifting the centralized filling platform can be realized; the position sensor and the one-way throttle valve can effectively eliminate various potential safety hazards, and the simple instrument icon display method is convenient for a driver to clearly check the state of the filling platform, and the one-key operation switch can simplify operation and further improve working efficiency.
Drawings
FIG. 1 is a block diagram of the electro-hydraulic system of the present invention;
FIG. 2 is a pattern diagram of a centralized filling meter display icon of the present invention;
in the figure: 1. a pilot pump; 2. a pilot reversing valve; 3. a one-way throttle valve; 4. a platform lifting cylinder I; 5. a platform lifting cylinder II; 6. a control module; 7. a meter; 8. a position proximity switch; 9. a rocker switch.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the one-key lifting system for the centralized filling platform 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, a first platform lifting oil cylinder 4 and a second platform lifting oil cylinder 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 detection unit comprises a position proximity switch 8; the platform lifting oil cylinder I4 and the platform lifting oil cylinder II 5 are fixed on the turntable, the pilot pump 1 is connected with the pilot reversing valve 2 through a pilot oil way, the pilot reversing valve 2 is connected with the platform lifting oil cylinder I4 and the platform lifting oil cylinder II 5 through a pilot oil way, the 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 small-cavity oil inlet and large-cavity oil return, and the oil cylinders act to the top and are in a locking state of continuous pressure so as to drive the centralized filling platform to be in a storage state all the time.
When the driver manually operates the rocker switch 9, the control module 6 receives the instruction of putting down the filling platform, and at this time, 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 an upper limit position;
2. the excavator does not perform other operation actions.
The operation command of switching the reversing valve can be output when the condition is full, and the pilot reversing valve 2 receives the command to perform reversing operation.
After the pilot reversing valve 2 performs reversing action, the platform lifting oil cylinder I4 and the platform lifting oil cylinder II 5 are both converted into large-cavity oil inlets and small-cavity oil returns, and the oil cylinders drive the centralized filling platform to put down and finally keep the put-down state until the oil cylinders act to the top point and are in a locking state of continuous pressure, so that filling operation can be performed after the excavator is flameout.
After the filling operation is completed, restarting the excavator, and at the moment, operating the rocker switch 9 again by a driver, and receiving a control instruction for retracting the filling platform by the control module 6; meanwhile, the position proximity switch 8 is not positioned 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, at the moment, the pilot reversing valve 2 returns to an initial forward conduction state, the oil cylinder acts to the top point, the centralized filling platform is driven to act to the top point and is in a continuous pressure retraction locking state, and at the moment, one operation cycle is ended.
When the excavator is in flameout and long-term stop state, the pressure in the pilot oil path can generate oil drainage phenomenon due to the gravity of some mechanical mechanisms, and in order to avoid the dropping of the filling platform due to the dead weight, the one-way throttle valve 3 is added, so that the oil return phenomenon of the pilot oil path can be effectively reduced.
As shown in FIG. 2, two states of the centralized filling platform can be displayed through a control instrument, and a specific style is shown in the figure, when the centralized filling platform is in a put-down state, the icon is in a red flashing state; when the centralized filling platform is in a retracted state, the icon is in a white non-blinking state, so that a driver can be prompted to concentrate the position state of the filling platform 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 embodiments thereof, and is not to be construed as limiting thereof. The drawings are merely illustrative of one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by the present disclosure, the structural mode and the embodiment similar to the technical scheme are not creatively designed without departing from the gist of the present disclosure, and all the structural modes and the embodiment belong to the protection scope of the present disclosure.
Claims (8)
1. A be used for ultra-large excavator to concentrate filling platform key operating system which characterized in that: the one-key lifting system of the centralized filling platform 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 path, 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 detection unit comprises a position proximity switch; the platform lifting oil cylinder is fixed on the turntable, the pilot pump is connected with the pilot reversing valve through a pilot oil path, the pilot reversing valve is connected with the platform lifting oil 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.
2. The one-key lifting system for a centralized filling platform of an oversized excavator according to claim 1, wherein: the number of the platform lifting oil cylinders is not less than 2, and the platform lifting oil cylinders synchronously act, so that the stable action of the filling platform is ensured.
3. The one-key lifting system for a centralized filling platform of an oversized excavator according to claim 1, wherein: 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 a centralized filling platform of an oversized excavator according to claim 1, wherein: the rocker switch is installed in the cab, and the instrument is installed in the cab.
5. The one-key lifting system for a centralized filling platform of an oversized excavator according to claim 1, wherein: the position of the position proximity switch corresponds to the limiting position on the centralized filling platform.
6. The one-key lifting system for a centralized filling platform of an oversized excavator according to claim 1, wherein: the rocker switch is a switch with a self-locking function.
7. A control method for a one-key lift system of a centralized filling platform of an ultra-large excavator according to any one of claims 1 to 5, comprising the steps of:
s1, operating a rocker switch in a cab to switch a one-key state, and connecting a control module to control an electromagnetic coil of a pilot reversing valve through an electrical control circuit after the rocker switch acts;
s2, the pilot reversing valve performs action switching to realize oil inlet and oil return of the large cavity and the small cavity of the centralized filling platform, drives the centralized filling platform to be put down and retracted, and finally meets the action requirement of lifting of the centralized filling platform;
s3, the control module needs to add the data of the position proximity switch into a protection mechanism of the whole vehicle of the excavator, when the position proximity switch does not detect a signal, namely, the filling platform does not reach the upper limit, at the moment, the control module can judge that the excavator is in a fault state of filling or the filling platform is not lifted, any working action of the excavator needs to be forbidden, meanwhile, in the working process of the excavator, in order to avoid misoperation of the filling platform, the control module judges whether the state of the excavator is operated to send a signal to a pilot reversing valve, 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, which is disclosed in claim 7, is characterized in that: in the step S2, the oil quantity in the pilot oil path leading to the lifting oil cylinder of the platform is regulated by regulating the opening of the outlet of the pilot reversing valve, so that the action speed of the lifting oil cylinder is stable, the action speed of the filling platform is stabilized and concentrated, and the regulation of the movement speed is realized.
Priority Applications (1)
| 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 CN114855916A (en) | 2022-08-05 |
| CN114855916B true 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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| CN114855916A (en) | 2022-08-05 |
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