CN210101617U - Anti-flameout system and engineering machinery - Google Patents
Anti-flameout system and engineering machinery Download PDFInfo
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- CN210101617U CN210101617U CN201920959926.1U CN201920959926U CN210101617U CN 210101617 U CN210101617 U CN 210101617U CN 201920959926 U CN201920959926 U CN 201920959926U CN 210101617 U CN210101617 U CN 210101617U
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Abstract
The utility model provides a prevent flame-out system and engineering machine tool, prevent that flame-out system includes: an engine, a plunger pump and a control valve; the plunger pump comprises an input shaft, the input shaft is connected with the engine, and the plunger pump comprises a first pressure cavity and a second pressure cavity; two ends of the control valve are respectively communicated with the first pressure cavity and the second pressure cavity so as to control the connection or disconnection between the first pressure cavity and the second pressure cavity. The first pressure chamber and the second pressure chamber of plunger pump pass through the control valve intercommunication, at the in-process of engineering machine tool braking, the control valve switches on, the pressure difference between balanced second pressure chamber and the first pressure chamber, and then reduce the power of plunger pump, avoid the power of plunger pump to exceed the rated power of engine, and then avoid the engine to stall, ensure the normal operating of engine, and owing to reduced opening of engine and stopping the number of times, can prolong the life of engine effectively, promote the whole quality of anti-stall system.
Description
Technical Field
The utility model relates to an engineering machine tool technical field particularly, relates to an prevent flameout system and engineering machine tool.
Background
At present, in the related technology, when the engineering machinery runs, a driver is required to step on a brake pedal to brake the engineering machinery, but in the braking process, the pressure of a manual control plunger pump of a closed running hydraulic system is increased, the displacement is almost unchanged, so that the power of the manual control plunger pump is increased instantaneously, the power exceeds the rated power of an engine, and the engine is easy to stall.
SUMMERY OF THE UTILITY MODEL
The present invention aims at least solving one of the technical problems existing in the prior art or the related art.
To this end, a first aspect of the present invention provides an anti-flameout system.
A second aspect of the present invention provides an engineering machine.
In view of this, the utility model provides an anti-flameout system in a first aspect, including engine, plunger pump, braking hydraulic system, pressure detection module, control valve and control module; the plunger pump comprises an input shaft, the input shaft is connected with the engine, and the plunger pump comprises a first pressure cavity and a second pressure cavity; the brake hydraulic system is connected with the engine; the detection end of the pressure detection module is connected with the brake hydraulic system to detect the pressure value of the brake hydraulic system; the two ends of the control valve are respectively communicated with the first pressure cavity and the second pressure cavity to control the connection or disconnection between the first pressure cavity and the second pressure cavity, the signal input end of the control module is connected with the signal output end of the pressure detection module, the signal output end of the control module is electrically connected with the control end of the control valve, and the control module controls the connection or disconnection of the control valve according to the detection value of the pressure detection module.
The utility model provides a prevent flameout system, engine drive plunger pump for the plunger pump provides power, and plunger pump drive hydraulic motor, hydraulic motor drive axle, and then prevent that flameout system realizes the drive to engineering machine tool. The first pressure chamber and the second pressure chamber of plunger pump pass through the control valve intercommunication, at the in-process of engineering machine tool braking, the control valve switches on, the pressure difference between balanced second pressure chamber and the first pressure chamber, and then reduce the power of plunger pump, avoid the power of plunger pump to exceed the rated power of engine, and then avoid the engine to stall, ensure the normal operating of engine, and owing to reduced opening of engine and stopping the number of times, can prolong the life of engine effectively, promote the whole quality of anti-stall system. When the construction machine does not need to be braked, the control valve is in a disconnected state.
In addition, the utility model provides an anti-flameout system among the above-mentioned technical scheme can also have following additional technical characteristics:
in the above technical solution, preferably, the brake hydraulic system includes a brake pump, and the pressure detection module is connected to the brake pump. In the technical scheme, a pressure intensity detection module is arranged on an oil way of the brake pump, and the pressure intensity detection module can convert the pressure intensity value of the brake pump into a digital signal and send the digital signal to the control module. When a driver steps on a brake pedal, the pressure intensity of the brake pump is increased, when the pressure intensity is increased to a threshold value, the fact that the driver needs to brake the engineering machinery is indicated, the control module sends a control signal to the control valve at the moment to enable the control valve to be conducted, then the pressure intensity of the plunger pump is reduced before complete braking, and flameout of the transmitter is avoided.
Preferably, the threshold value is 3bar (bar) to 10 bar.
Preferably, the threshold value is 5 bar.
In any of the above technical solutions, preferably, the control module includes: the device comprises a receiving port, an output port and a processing module; the receiving port is a signal input end of the control module and is used for receiving the pressure value from the pressure detection module; the output port is a signal output end of the control module and is used for outputting a disconnection signal or a connection signal to the control valve; the processing module is respectively electrically connected with the receiving port and the output port and used for judging whether the pressure value is smaller than the threshold value, sending a disconnection signal to the control valve when the pressure value is smaller than the threshold value, and sending a connection signal to the control valve when the pressure value is not smaller than the threshold value.
In the technical scheme, the control module comprises a receiving port, an output port and a processing module, wherein the receiving port and the output port are electrically connected with the processing module and used for receiving or sending signals. The processing module has the pressure value of the brake pump to judge whether the driver brakes or not, and then controls the on and off of the control valve, so that the control valve is automatically controlled, the flameout preventing system can automatically avoid flameout of the engine, the operation of the driver is simplified, and the driving experience of the driver is improved.
In any of the above technical solutions, preferably, the pressure detection module is a pressure sensor or a pressure switch.
In the technical scheme, the pressure sensor can convert the pressure value in the plunger pump into a digital signal and further transmit the digital signal to the processing module. The pressure switch can be switched on or off according to the pressure in the brake pump, so that the processing module has a conducting state of the pressure switch to obtain the pressure of the brake pump.
In any of the above technical solutions, preferably, the first pressure chamber is a pressure oil chamber of the plunger pump, and the second pressure chamber is an oil suction chamber of the plunger pump.
In the technical scheme, the first pressure cavity is set as a pressure oil cavity of the plunger pump, the second pressure cavity is set as an oil suction cavity of the plunger pump, the pressure oil cavity and the oil suction cavity of the plunger pump are directly communicated, the pressure between the pressure oil cavity and the oil suction cavity can be quickly increased, the power of the plunger pump is further quickly reduced, and flameout of an engine is avoided.
In any of the above technical solutions, preferably, the plunger pump is a closed variable plunger pump.
In the technical scheme, the closed variable plunger pump is convenient to adjust, so that the power of the plunger pump can be selected more conveniently by a driver.
In any of the above technical solutions, preferably, the plunger pump further includes a swash plate, a connecting rod, and a variable piston; one end of the connecting rod is connected with the swash plate; the variable piston is connected with the other end of the connecting rod; wherein, the first pressure chamber and the second pressure chamber are respectively arranged at two sides of the variable piston.
In this technical scheme, variable piston drive sloping cam plate motion, and then change the power of plunger pump, and first pressure chamber and second pressure chamber set up respectively in the both sides of variable piston, and after switching on first pressure chamber and second pressure chamber, the pressure region in first pressure chamber and the second pressure chamber is balanced, and the sloping cam plate moves to the meso position, and plunger pump power descends, and then avoids the engine to stall.
In any of the above technical solutions, preferably, the control valve is a solenoid valve.
In the technical scheme, the electromagnetic valve can simplify the control of the control valve, and the processing module can change the conduction state of the control valve more conveniently.
The utility model discloses the second aspect provides an engineering machine tool, include as above-mentioned arbitrary technical scheme prevent flameout system. Therefore, the engineering machine has the full beneficial effects of the flameout preventing system in any technical scheme.
In the above technical solution, preferably, the construction machine further includes: the axle is connected with a plunger pump, and the plunger pump is used for driving the axle; the oil replenishing pump is connected with the plunger pump; the brake pad is connected with the brake pump and used for controlling the rotating speed of the axle.
In the technical scheme, the axle, the flameout preventing system and the oil supplementing pump form a driving system of the engineering machinery, the brake pump and the brake pad form a brake system of the engineering machinery, and the brake system is combined with the brake system to realize control of the engineering machinery.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 shows a schematic view of an anti-misfire system according to an embodiment of the present invention;
wherein, the corresponding relationship between the reference numbers and the component names in fig. 1 is:
the device comprises an engine 1, a plunger pump 2, a control valve 3, a brake pump 4, a pressure detection module 5, a control module 6, an oil replenishing pump 7 and a brake pad 8.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The following describes an anti-flameout system and a construction machine according to some embodiments of the present invention with reference to fig. 1.
In an embodiment of the first aspect of the present invention, as shown in fig. 1, the present invention provides an anti-flameout system, including: the system comprises an engine 1, a plunger pump 2, a brake hydraulic system, a pressure intensity detection module, a control valve 3 and a control module; the plunger pump 2 comprises an input shaft, the input shaft is connected with the engine 1, and the plunger pump 2 comprises a first pressure cavity and a second pressure cavity; the brake hydraulic system is connected with the engine; the detection end of the pressure detection module 5 is connected with the brake hydraulic system to detect the pressure value of the brake hydraulic system; two ends of the control valve 3 are respectively communicated with the first pressure cavity and the second pressure cavity so as to control the connection or disconnection between the first pressure cavity and the second pressure cavity; and a signal input end of the control module 6 is connected with a signal output end of the pressure detection module 5, a signal output end of the control module 6 is electrically connected with a control end of the control valve 3, and the control module 6 controls the control valve 3 to be switched on or off according to a detection value of the pressure detection module 5.
In the embodiment, the engine 1 drives the plunger pump 2 to provide power for the plunger pump 2, the plunger pump 2 drives the hydraulic motor, the hydraulic motor drives the axle, and the flameout preventing system drives the engineering machinery. First pressure chamber and the second pressure chamber of plunger pump 2 pass through control valve 3 intercommunication, at the in-process of engineering machine tool braking, control valve 3 switches on, the pressure difference between balanced second pressure chamber and the first pressure chamber, and then reduce the power of plunger pump 2, the power of avoiding plunger pump 2 exceeds the rated power of engine 1, and then avoid engine 1 to shut down, ensure engine 1's normal operating, and because the number of times of opening and shutting down of engine 1 has been reduced, can prolong engine 1's life effectively, promote the whole quality of anti-flameout system. When the work machine does not require braking, the control valve 3 is in the off state.
In an embodiment of the present invention, preferably, as shown in fig. 1, the braking hydraulic system includes a brake pump, and the pressure detection module 5 is connected to the brake pump.
In this embodiment, a pressure detection module 5 is disposed on an oil path of the brake pump 4, and the pressure detection module 5 may convert a pressure value of the brake pump 4 into a digital signal and send the digital signal to the control module 6. When a driver steps on a brake pedal, the pressure of the brake pump 4 is increased, when the pressure is increased to a threshold value, the fact that the driver needs to brake the engineering machinery is indicated, at the moment, the control module 6 sends a control signal to the control valve 3 to enable the control valve 3 to be conducted, the pressure of the plunger pump 2 is reduced before complete braking, and flameout of a transmitter is avoided.
In an embodiment of the present invention, preferably, the brake pump is connected to the brake pad 8 through an oil path, and the pressure detection module 5 is connected to the oil path.
Preferably, the threshold value is 3bar (bar) to 10 bar.
Preferably, the threshold value is 5 bar.
In an embodiment of the present invention, preferably, the control module 6 includes: a receiving port (not shown), an output port (not shown), and a processing module (not shown); the receiving port is a signal input end of the control module 6 and is used for receiving the pressure value from the pressure detection module 5; the output port is a signal output end of the control module 6 and is used for outputting a disconnection signal or a connection signal to the control valve 3; the processing module is electrically connected with the receiving port and the output port respectively and is used for judging whether the pressure value is smaller than the threshold value, sending a disconnection signal to the control valve 3 when the pressure value is smaller than the threshold value, and sending a connection signal to the control valve 3 when the pressure value is not smaller than the threshold value.
In this embodiment, the control module 6 includes a receiving port, an output port, and a processing module, and the receiving port and the output port are electrically connected to the processing module for receiving or transmitting signals. The processing module has the pressure value of the brake pump 4 to judge whether the driver brakes or not, and then controls the on and off of the control valve 3, so that the control valve 3 is automatically controlled, and then the flameout preventing system can automatically prevent the engine 1 from flameout, thereby simplifying the operation of the driver and improving the driving experience of the driver.
In an embodiment of the present invention, the pressure detecting module 5 is preferably a pressure sensor (also called pressure sensor) or a pressure switch.
In this embodiment, the pressure sensor may convert the pressure value in the plunger pump 2 into a digital signal, which is then transmitted to the processing module. The pressure switch can be switched on or off according to the pressure in the brake pump 4, so that the processing module has a conducting state of the pressure switch to obtain the pressure of the brake pump 4.
In an embodiment of the present invention, preferably, the first pressure chamber is a pressure oil chamber of the plunger pump 2, and the second pressure chamber is an oil suction chamber of the plunger pump 2.
In this embodiment, the first pressure chamber is set as the oil-pressing chamber of the plunger pump 2, and the second pressure chamber is set as the oil-sucking chamber of the plunger pump 2, so that the oil-pressing chamber and the oil-sucking chamber of the plunger pump 2 are directly communicated, the pressure between the oil-pressing chamber and the oil-sucking chamber can be quickly increased, the power of the plunger pump 2 can be quickly reduced, and the engine 1 can be prevented from stalling.
In one embodiment of the present invention, the plunger pump 2 is preferably a closed variable displacement plunger pump.
In this embodiment, the closed variable displacement plunger pump is easy to adjust, so that the driver can select the power of the plunger pump more conveniently.
In an embodiment of the present invention, preferably, the plunger pump 2 further includes: a swash plate (not shown), a connecting rod (not shown), and variable pistons (not shown); one end of the connecting rod is connected with the swash plate; the variable piston is connected with the other end of the connecting rod; wherein, the first pressure chamber and the second pressure chamber are respectively arranged at two sides of the variable piston.
In this embodiment, the variable piston drives the swash plate to move, so as to change the power of the plunger pump 2, the first pressure chamber and the second pressure chamber are respectively arranged at two sides of the variable piston, after the first pressure chamber and the second pressure chamber are communicated, the pressure areas in the first pressure chamber and the second pressure chamber are balanced, the swash plate moves to the middle position, the power of the plunger pump 2 is reduced, and the engine 1 is prevented from stalling.
In one embodiment of the present invention, the control valve 3 is preferably a solenoid valve.
In this embodiment, the solenoid valve also simplifies the control of the control valve 3, making it easier for the processing module to change the state of conduction of the control valve 3.
In an embodiment of the second aspect of the present invention, the present invention provides an engineering machine, including the flameout preventing system according to any one of the above embodiments. Therefore, the working machine comprises all the beneficial effects of the flameout preventing system according to any one of the embodiments.
In an embodiment of the present invention, preferably, as shown in fig. 1, the construction machine further includes: the brake comprises an axle, an oil supplementing pump 7 and a brake pad 8, wherein the axle is connected with a plunger pump 2, and the plunger pump 2 is used for driving the axle; the oil replenishing pump 7 is connected with the plunger pump 2; the brake pad 8 is connected with the brake pump 4, and the brake pad 8 is used for controlling the rotating speed of the axle.
In the embodiment, the axle, the flameout preventing system and the oil replenishing pump 7 form a driving system of the engineering machinery, the brake pump 4 and the brake pad 8 form a braking system of the engineering machinery, and the braking system is combined with the braking system to realize the control of the engineering machinery. The engineering machinery can be vehicles such as a dump truck, a mixer truck, a pump truck and a car, and can also be construction machinery such as a road roller, a paver, an excavator and a front crane.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the present disclosure, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An anti-misfire system comprising:
an engine (1);
a plunger pump (2), wherein the plunger pump (2) comprises an input shaft, the input shaft is connected with the engine (1), and the plunger pump (2) comprises a first pressure cavity and a second pressure cavity;
the brake hydraulic system is connected with the engine;
the pressure detection module (5), wherein the detection end of the pressure detection module (5) is connected with the brake hydraulic system to detect the pressure value of the brake hydraulic system;
the two ends of the control valve (3) are respectively communicated with the first pressure cavity and the second pressure cavity so as to control the connection or disconnection between the first pressure cavity and the second pressure cavity;
the signal input end of the control module (6) is connected with the signal output end of the pressure detection module (5), the signal output end of the control module (6) is electrically connected with the control end of the control valve (3), and the control module (6) controls the on/off of the control valve (3) according to the detection value of the pressure detection module (5).
2. The system of claim 1, further comprising: the brake hydraulic system comprises a brake pump (4), and the pressure intensity detection module is connected with the brake pump (4).
3. Flameout prevention system according to claim 2, characterized in that the control module (6) comprises:
a receiving port, which is a signal input end of the control module (6), for receiving a pressure value from the pressure detection module (5);
the output port is a signal output end of the control module (6) and is used for outputting a disconnection signal or a connection signal to the control valve (3);
and the processing module is respectively electrically connected with the receiving port and the output port and is used for judging whether the pressure value is smaller than a threshold value, sending the disconnection signal to the control valve (3) when the pressure value is smaller than the threshold value, and sending the connection signal to the control valve (3) when the pressure value is not smaller than the threshold value.
4. The system of claim 2,
the pressure detection module (5) is a pressure sensor or a pressure switch.
5. The system of claim 1,
the plunger pump (2) is a closed variable plunger pump (2).
6. Flameout prevention system according to claim 1, characterized in that the plunger pump (2) further comprises:
a swash plate;
one end of the connecting rod is connected with the swash plate;
the variable piston is connected with the other end of the connecting rod;
wherein the first pressure chamber and the second pressure chamber are respectively disposed at both sides of the variable piston.
7. Flameout prevention system according to any one of claims 1 to 6,
the control valve (3) is an electromagnetic valve.
8. A working machine, characterized by comprising an anti-blowout system as claimed in any one of claims 1 to 7.
9. The work machine of claim 8, further comprising:
the axle is connected with the plunger pump (2), and the plunger pump (2) is used for driving the axle;
the oil supplementing pump (7), the oil supplementing pump (7) is connected with the plunger pump (2);
the brake block (8), the brake block (8) is connected with the brake pump (4), and the brake block (8) is used for controlling the rotating speed of the axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920959926.1U CN210101617U (en) | 2019-06-25 | 2019-06-25 | Anti-flameout system and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920959926.1U CN210101617U (en) | 2019-06-25 | 2019-06-25 | Anti-flameout system and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210101617U true CN210101617U (en) | 2020-02-21 |
Family
ID=69565120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920959926.1U Active CN210101617U (en) | 2019-06-25 | 2019-06-25 | Anti-flameout system and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210101617U (en) |
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2019
- 2019-06-25 CN CN201920959926.1U patent/CN210101617U/en active Active
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