CN109853658B - Radiator dust removal system and operation machinery - Google Patents
Radiator dust removal system and operation machinery Download PDFInfo
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- CN109853658B CN109853658B CN201910215030.7A CN201910215030A CN109853658B CN 109853658 B CN109853658 B CN 109853658B CN 201910215030 A CN201910215030 A CN 201910215030A CN 109853658 B CN109853658 B CN 109853658B
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Abstract
The invention relates to dust removal of a radiator, and aims to solve the problem that the dust removal of the existing dust removal system of the radiator is difficult; the heat radiator dust removal system comprises a hood, a heat radiator fixedly mounted below the hood, a heat radiation fan capable of rotating forwards or reversely, a linear displacement mechanism, a controller used for controlling the linear displacement mechanism to stretch and the heat radiation fan to rotate forwards and backwards, and a trigger device connected with the controller and used for triggering and closing a dust removal function, wherein a hinged side door is arranged on the hood, a vent and a filter screen are arranged on the side door, an air inlet surface of the heat radiator is opposite to the side door when the heat radiator works in a heat radiation mode, and an air outlet surface of the heat radiator is opposite to the heat radiation fan; the two ends of the linear displacement mechanism are respectively connected with the side door and the fixed hinged point, and the side door is driven to rotate to open and close by the telescopic pushing of the linear displacement mechanism. In the invention, when the radiator needs to be cleaned, an operator can operate the trigger device in the cab to finish the dust removal work of the radiator, so that the operation is convenient.
Description
Technical Field
The invention relates to radiator dust removal, in particular to a radiator dust removal system and an operation machine.
Background
The main engine of the excavator matched with different accessories is widely applied to the construction of projects such as mining, building, farmland and the like. An existing excavator generally adopts an air suction type heat dissipation system, a ventilation grating is arranged on a covering part of the excavator, a filter screen is arranged on the ventilation grating, a radiator is installed between a heat dissipation fan and the ventilation grating, air outside the excavator enters an engine cover through the ventilation grating and the filter screen under the driving of the fan and flows through a cooler to cool coolant and hydraulic oil.
Host computers of excavators have high heat dissipation requirements, but during construction in farmlands and forests, catkins and leaf fragments floating in the air are blocked in the cooler along with the air flowing through the cooler by fins of the cooler, so that the cooler is not ventilated smoothly, and further the heat dissipation capacity of the whole excavator is reduced. When the radiator is blocked, the rotating direction of the fan can be changed, the direction of the airflow flowing through the radiator is changed, and then sundries sucked into the radiator are blown out of the radiator.
The filter screen that sets up on the ventilation grid in the radiator outside, when the air inflow complete machine, this filter screen and ventilation grid can effectively block the outside impurity entering aircraft bonnet of complete machine. However, similarly, when the air flows out of the whole machine in the reverse direction, the impurities blown out of the radiator by the airflow are blocked by the ventilation grille and the filter screen, and are difficult to be effectively discharged to the outside of the hood. Meanwhile, the filter screen on the ventilation grating can increase wind resistance, reduce the wind speed of the fan during back blowing and further reduce the cleaning effect.
The above problems are also present in other working machines such as agricultural machines and the like which are constructed in farmlands and forests.
Disclosure of Invention
The invention provides a radiator dust removal system and an operation machine, aiming at solving the technical problem that the existing radiator dust removal system is difficult to remove dust, and the radiator dust removal system and the operation machine are convenient for the radiator to remove dust.
The technical scheme for realizing the purpose of the invention is as follows: the radiator dust removal system comprises a hood, a radiator fixedly arranged under the hood, and a radiator fan capable of rotating forwards or reversely, and is characterized in that the hood is provided with a fan body;
the hood is provided with a hinged side door, the side door is provided with a vent and a filter screen, the air inlet surface of the radiator is opposite to the side door when the radiator works in a radiating mode, and the air outlet surface of the radiator is opposite to the radiating fan; the two ends of the linear displacement mechanism are respectively connected with the side door and the fixed hinged point, and the side door is driven to rotate to open and close by the telescopic pushing of the linear displacement mechanism. The mounting means of fixed hinge contact sight hood is confirmed, if the aircraft bonnet can wholly open, fixed hinge point then can set up the skeleton at the aircraft bonnet, if the aircraft bonnet can not wholly open, fixed hinge contact can also set up on the frame.
In the invention, when the radiator needs to be cleaned, an operator can operate the trigger device in the cab to finish the dust removal work of the radiator, so that the operation is convenient.
Furthermore, the radiator dust removal system further comprises a door closing limit switch and a door opening limit switch, wherein the door closing limit switch is connected with the controller and used for limiting door closing, and the door opening limit switch is used for limiting door opening, and the controller controls the working state of the linear displacement mechanism according to the states of the door closing limit switch and the door opening limit switch. The door closing limit switch and the door opening limit switch can be used as trigger switches for the extension or retraction termination of the linear displacement mechanism,
further, in the above-mentioned radiator dust removal system, the linear displacement mechanism is a hydraulic cylinder connected to a hydraulic oil source through an electromagnetic valve, a control end of the electromagnetic valve is connected to the controller, and the linear displacement mechanism may be a linear displacement motor.
Furthermore, in the radiator dust removal system, the controller is connected with a pressure sensor for detecting the pressure of the large cavity of the hydraulic oil cylinder, when the side door is blocked in the opening process, the pressure of the large cavity of the hydraulic oil cylinder rises, when the pressure rises to a certain value, the controller controls the electromagnetic valve to change direction, the hydraulic oil cylinder stops extending, and the side door is prevented from being damaged.
Further, among the above-mentioned radiator dust pelletizing system, still include and be used for detecting whether there is the space detection device of barrier in the side door rotation space scope, space detection device with the controller is connected. The spatial detection means may be radar detection means or laser scanning detection means. When the space detection device detects that an obstacle exists in the opening rotating space of the side door, the linear displacement mechanism is controlled to stop extending, and accidents caused by the fact that the side door collides with the obstacle are avoided.
Furthermore, the radiator dust removal system also comprises an alarm device connected with the controller and an air speed sensing device arranged on the windward side of the radiator, and the air speed sensing device is connected with the controller. When the machine works, if the wind speed sensing device detects that the wind speed flowing through the radiator is less than the preset value, the radiator is considered to be seriously blocked by sundries, and the alarm device gives an alarm to prompt an operator that the radiator needs to be cleaned.
The technical scheme for realizing the purpose of the invention is as follows: a working machine is provided with the radiator dust removal system.
Compared with the prior art, the dust removal device has the advantages that when the radiator is seriously blocked, an operator can carry out the dust removal operation of the radiator in a cab, and the dust removal device is convenient and quick.
Drawings
FIG. 1 is a control schematic diagram of a radiator dust removal system of the present invention.
FIG. 2 is a flow chart of the dust removal of the radiator dust removal system of the present invention.
Part names and serial numbers in the figure:
the air conditioner comprises a controller 1, a cooling fan 2, a radiator 3, an air speed sensing device 4, a door closing limit switch 5, a pressure sensor 6, a hydraulic oil cylinder 7, a space detection device 8, a side door 9, a door opening limit switch 10, a hood 11, an electromagnetic valve 12, a trigger device 13 and an alarm device 14.
Detailed Description
The following description of the embodiments refers to the accompanying drawings.
The radiator dust removal system disclosed by the invention is shown in figure 1 and comprises a hood 11, a radiator 3, a cooling fan 2 capable of rotating forwards or reversely, a linear displacement mechanism, a controller 1 for controlling the linear displacement mechanism and the cooling fan to rotate forwards and backwards and a trigger device 13 which is connected with the controller 1 and used for triggering and closing a dust removal function, wherein the radiator 3 is fixedly arranged below the hood cover 11, the hinged side door 9 is arranged on the hood 11, a ventilation opening and a filter screen are arranged on the side door 9, the air inlet surface of the radiator 3 is opposite to the side door 9 during the heat dissipation work, and the air outlet surface is opposite to the cooling fan 2; two ends of the linear displacement mechanism are respectively connected with the side door and the fixed hinged point, and the side door is pushed to rotate to open or close by the extension of the linear displacement mechanism.
The linear displacement mechanism is a hydraulic oil cylinder 7 connected with a hydraulic oil source through an electromagnetic valve 12, the control end of the electromagnetic valve 12 is connected with the controller 1, the controller 1 controls the working position of the electromagnetic valve 12, the electromagnetic valve 12 is in different working positions, and the hydraulic oil cylinder is in an extending or retracting or free position. When the electromagnetic valve is in a free position, the rod cavity and the rodless cavity of the hydraulic oil cylinder 7 are communicated with the oil tank loop through the electromagnetic valve 12, and the hydraulic oil cylinder can freely stretch under the action of external force.
A door closing limit switch 5 for limiting door closing and a door opening limit switch 10 for limiting door opening are connected to the controller 1, wherein the door closing limit switch 5 is triggered when the side door 9 is completely closed. When the side door 9 is fully opened, the open limit switch 10 is triggered. When the door closing limit switch 5 is triggered, the controller 1 controls the electromagnetic valve 12 to be switched to a free position, the rod cavity and the rodless cavity of the hydraulic oil cylinder 7 are communicated and are both communicated with an oil tank loop, and the hydraulic oil cylinder 7 stops retracting. When the door opening limit switch 10 is triggered, the controller 1 controls the electromagnetic valve 12 to be switched to a free position, the rod cavity and the rodless cavity of the hydraulic oil cylinder 7 are communicated and are both communicated with the oil tank loop, and the hydraulic oil cylinder 7 stops extending.
A pressure sensor 6 for detecting the pressure of a rodless cavity of a hydraulic oil cylinder 7 is connected with a controller 1, in the process of opening a side door, oil is filled in a large cavity of the hydraulic oil cylinder 7, if the side door is blocked, for example, the pressure of the large cavity of the hydraulic oil cylinder 7 is increased, and when the pressure is increased to a certain value, the controller 1 controls an electromagnetic valve 12 to be reversed to enable the electromagnetic valve to be switched to a free position, the hydraulic oil cylinder stops 7 and extends out, and the side door is prevented from being damaged.
A space detection device 8 for detecting whether there is an obstacle in the range of the turning space of the side door 7 is connected to the controller 1. The spatial detection device 8 may be a radar detection device or a laser scanning detection device. When the space detection device 8 detects that an obstacle exists in the opening rotating space of the side door, the hydraulic oil cylinder 8 is controlled to stop extending, and accidents caused by the fact that the side door collides with the obstacle are avoided.
The alarm device 14 and the wind speed sensing device 4 for detecting the wind speed on the windward side of the radiator are connected with the controller 1. When the machine works, if the wind speed sensing device 4 detects that the wind speed flowing through the radiator 3 is smaller than the preset value, the radiator 3 is considered to be seriously blocked by sundries, and the alarm device gives an alarm to prompt an operator that the radiator needs to be cleaned. The wind speed sensing device 4 is arranged on the windward side of the radiator 3, and the alarm device 14 and the trigger device 13 for triggering and closing the dust removal function are arranged in the cab, so that the operation of a driver is facilitated.
The radiator dust removal system in the embodiment may be used in a working machine, such as an excavator used in forestry or agriculture, and the dust removal operation flow of the radiator dust removal system is shown in fig. 2. In the operation process of the machine, the controller detects the air flow rate S flowing through the radiator through the air speed sensing device, when the air flow rate S is smaller than a set value S1, the radiator 3 is considered to be seriously blocked and needs to be cleaned, at the moment, the controller 1 gives an alarm prompt to an operator through the alarm device 14, and the operator starts the dust removal function of the radiator dust removal system through the trigger device 13.
After the dust removal function of the radiator dust removal system is started, whether an obstacle exists in an area where the side door is opened is detected through the space detection device, if so, an alarm is given and the opening of the side door is suspended, if no obstacle exists, the electromagnetic valve is controlled to change the direction, the hydraulic oil cylinder extends out, and the hydraulic oil cylinder pushes the side door to rotate and open. In the process of opening the side door, the pressure P of a large cavity of the hydraulic oil cylinder is detected through a pressure sensor, if the pressure P is larger than a preset value P1 but the opening limit switch is not triggered, the side door is considered to be blocked by an obstacle in the opening process, the controller controls the electromagnetic valve to control the hydraulic oil cylinder to stop extending and give an alarm through the alarm device in a reversing mode, when the pressure P of the hydraulic oil cylinder is larger than a preset value P1 but the opening limit switch is triggered, the side door is considered to be completely opened, the controller controls the electromagnetic valve to control the hydraulic oil cylinder to stop extending in the reversing mode, then the controller controls the cooling fan to rotate reversely, the direction of air flow flowing through the radiator is reversed, sundry dust adhered to the radiator is blown away, and the radiator is. When the reverse rotation time of the cooling fan reaches a preset value, the controller controls the electromagnetic valve to reverse, so that the hydraulic oil cylinder retracts to close the door and sends a door closing alarm signal, after the door closing limit switch is triggered, the electromagnetic valve of the controller reverses to a free position and cancels the door closing alarm, the cooling fan recovers normal forward rotation to complete the dust removal operation of the radiator, and air outside the machine enters from the windward side of the radiator through the ventilation grids and the filter screen on the side door and flows through the radiator to realize the heat dissipation of the radiator.
Claims (7)
1. A radiator dust removal system comprises a hood, a radiator fixedly arranged under the hood, and a radiator fan capable of rotating forwards or backwards, and is characterized in that the hood is provided with a fan body;
the hood is provided with a hinged side door, the side door is provided with a vent and a filter screen, the air inlet surface of the radiator is opposite to the side door when the radiator works in a radiating mode, and the air outlet surface of the radiator is opposite to the radiating fan;
two ends of the linear displacement mechanism are respectively connected with the side door and the fixed hinged point, and the side door is pushed to rotate to open and close by the extension and contraction of the linear displacement mechanism;
when the dust removal function is triggered and started, the controller enables the side door to be in an open state through the linear displacement mechanism and controls the cooling fan to rotate reversely; when the radiator works in a radiating mode, the controller enables the side door to be in a closed state through the linear displacement mechanism and controls the radiating fan to rotate forwards.
2. The heat sink dust-collecting system according to claim 1, further comprising a door-closing limit switch connected to the controller for limiting door closing and a door-opening limit switch for limiting door opening, wherein the controller controls the operating state of the linear displacement mechanism according to the states of the door-closing limit switch and the door-opening limit switch.
3. The radiator dust removal system according to claim 1 or 2, wherein the linear displacement mechanism is a hydraulic cylinder connected to a hydraulic oil source through an electromagnetic valve, and a control end of the electromagnetic valve is connected to the controller.
4. The heat sink dusting system of claim 3 further comprising a pressure sensor connected to the controller for sensing hydraulic ram large chamber pressure.
5. The heat sink dusting system of claim 1 or 2 further comprising a space detection device for detecting whether there is an obstacle in the side door turning space range, wherein the space detection device is connected to the controller.
6. The radiator dust removal system according to claim 1 or 2, further comprising an alarm device connected to a controller and a wind speed sensing device for detecting a wind speed on a windward side of the radiator, wherein the wind speed sensing device and the alarm device are connected to the controller.
7. A working machine characterized by having the radiator dust removal system according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910215030.7A CN109853658B (en) | 2019-03-21 | 2019-03-21 | Radiator dust removal system and operation machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910215030.7A CN109853658B (en) | 2019-03-21 | 2019-03-21 | Radiator dust removal system and operation machinery |
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| Publication Number | Publication Date |
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| CN109853658A CN109853658A (en) | 2019-06-07 |
| CN109853658B true CN109853658B (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910215030.7A Active CN109853658B (en) | 2019-03-21 | 2019-03-21 | Radiator dust removal system and operation machinery |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009110508A1 (en) * | 2008-03-06 | 2009-09-11 | 日立建機株式会社 | Heat exchanging device for construction machine |
| CN105698851A (en) * | 2016-01-28 | 2016-06-22 | 广西柳工机械股份有限公司 | An engineering machinery heat radiation system monitoring system and monitoring method |
| CN205429512U (en) * | 2015-12-08 | 2016-08-03 | 江苏天翔节能科技有限公司 | Intelligence heat dissipation and ventilation switch board |
| CN206106924U (en) * | 2016-09-14 | 2017-04-19 | 浙江鼎力机械股份有限公司 | Driving system that can reverse blowdown and automobile body, aerial working platform |
| WO2017134309A1 (en) * | 2016-02-05 | 2017-08-10 | Royal Duyvis Wiener B.V. | Apparatus for drying and/or roasting beans or nibs |
| CN109453996A (en) * | 2018-11-20 | 2019-03-12 | 湖北友花茶业科技有限公司 | Air blower is used in a kind of screening of tealeaves |
-
2019
- 2019-03-21 CN CN201910215030.7A patent/CN109853658B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009110508A1 (en) * | 2008-03-06 | 2009-09-11 | 日立建機株式会社 | Heat exchanging device for construction machine |
| CN205429512U (en) * | 2015-12-08 | 2016-08-03 | 江苏天翔节能科技有限公司 | Intelligence heat dissipation and ventilation switch board |
| CN105698851A (en) * | 2016-01-28 | 2016-06-22 | 广西柳工机械股份有限公司 | An engineering machinery heat radiation system monitoring system and monitoring method |
| WO2017134309A1 (en) * | 2016-02-05 | 2017-08-10 | Royal Duyvis Wiener B.V. | Apparatus for drying and/or roasting beans or nibs |
| CN206106924U (en) * | 2016-09-14 | 2017-04-19 | 浙江鼎力机械股份有限公司 | Driving system that can reverse blowdown and automobile body, aerial working platform |
| CN109453996A (en) * | 2018-11-20 | 2019-03-12 | 湖北友花茶业科技有限公司 | Air blower is used in a kind of screening of tealeaves |
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| CN109853658A (en) | 2019-06-07 |
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