CN111115514A - Starting motor protection structure and method thereof and telescopic arm forklift - Google Patents
Starting motor protection structure and method thereof and telescopic arm forklift Download PDFInfo
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- CN111115514A CN111115514A CN201911389541.7A CN201911389541A CN111115514A CN 111115514 A CN111115514 A CN 111115514A CN 201911389541 A CN201911389541 A CN 201911389541A CN 111115514 A CN111115514 A CN 111115514A
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- sensor
- starting
- controller
- motor protection
- pressure value
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07572—Propulsion arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a starting motor protection structure and a method thereof and a telescopic arm forklift, and relates to the technical field of forklifts, wherein the starting motor protection structure comprises a controller, a sensor for measuring the main oil pressure of a forklift hydraulic system and a starting switch for controlling the starting and stopping of a starting motor; the sensor is connected with the controller, and when the pressure value measured by the sensor is not less than the set value, the controller controls the starting switch to be in a disconnected state. The starting motor protection method is used for starting a motor protection structure, a pressure value of main oil pressure of a forklift hydraulic system is obtained through a sensor, and a measured pressure value is compared with a set value through a controller; if the measured pressure value is not less than the set value, controlling the starting switch to be in a disconnected state; and if the measured pressure value is less than the set value, controlling the starting switch to be in a closed state. A starting motor protection method for a telescopic arm forklift is adopted and comprises a forklift body and a starting motor protection structure. The technical effect of low maintenance cost is achieved.
Description
Technical Field
The invention relates to the technical field of forklifts, in particular to a starting motor protection structure and method and a telescopic boom forklift.
Background
The load sensitive pump of the hydraulic system is directly connected to the gearbox, and when the hydraulic system is suppressed, the load sensitive pump can generate a very large starting resistance moment, so that an output shaft of the gearbox is blocked, and an engine cannot be started. If the operator forcibly starts the engine, the starting motor is locked, and the starting motor is damaged. A common method for protecting the starter motor is to arrange a fuse at the positive pole of the starter motor. However, when the positive fuse of the starter motor is burnt out, the positive fuse needs to be replaced, the replacement of the positive fuse of the starter motor is very troublesome, and the cost for protecting the starter motor by adopting the positive fuse of the starter motor is higher.
Therefore, it is an important technical problem to be solved by those skilled in the art to provide a starting motor protection structure and method thereof, and a telescopic boom forklift truck, which can reduce maintenance cost.
Disclosure of Invention
The invention aims to provide a starting motor protection structure and a starting motor protection method as well as a telescopic arm forklift, so as to solve the technical problem of high maintenance cost in the prior art.
In a first aspect, an embodiment of the present invention provides a protection structure for a starter motor, including a controller, a sensor for measuring a main oil pressure of a vehicle hydraulic system, and a starter switch for controlling the starter motor to start and stop;
the sensor is connected with the controller, and when the pressure value measured by the sensor is not less than a set value, the controller controls the starting switch to be in a disconnected state.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, where the sensor employs a pressure sensor or a pressure switch.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the starting switch is a relay.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the sensor is installed on a main oil pressure pipeline of the hydraulic system.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein a valve for installing the sensor is disposed on the main oil pressure pipeline of the hydraulic system, and the sensor is installed on the valve.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, where the starting motor protection structure further includes a power supply, and the controller, the sensor, and the starting switch are all connected to the power supply.
In a second aspect, an embodiment of the present invention provides a protection method for a starter motor, which is used for the starter motor protection structure, and includes the following steps:
acquiring a pressure value of main oil pressure of a vehicle hydraulic system through a sensor, transmitting the measured pressure value into a controller, and comparing the measured pressure value with a set value by the controller;
if the measured pressure value is not less than the set value, controlling the starting switch to be in a disconnected state;
and if the measured pressure value is less than the set value, controlling the starting switch to be in a closed state.
In combination with the second aspect, embodiments of the present invention provide a possible implementation manner of the second aspect, wherein the controller compares the measured pressure value with a set value when starting the vehicle.
With reference to the second aspect, an embodiment of the present invention provides a possible implementation manner of the second aspect, wherein the set value is a main oil pressure value of the hydraulic system during normal operation.
In a third aspect, the embodiment of the invention provides a telescopic boom forklift, and the starting motor protection method comprises a forklift body and a starting motor protection structure;
the starting motor protection structure is arranged on the forklift body.
Has the advantages that:
the invention provides a starting motor protection structure which comprises a controller, a sensor and a starting switch, wherein the sensor is used for measuring the main oil pressure of a forklift hydraulic system, and the starting switch is used for controlling the starting and stopping of a starting motor; the sensor is connected with the controller, and when the pressure value measured by the sensor is not less than the set value, the controller controls the starting switch to be in a disconnected state.
When the working personnel need start the vehicle, the sensor can transmit the pressure value of the main oil pressure of the hydraulic system measured to the controller, the controller can compare the measured pressure value with a set value, if the measured pressure value is not less than the set value, the hydraulic system is in a pressure-holding state, the starting switch is controlled to be in a disconnection state, the starting of the starting motor is forbidden, the fuse burnout of the starting motor is avoided, and the maintenance cost is reduced.
The invention provides a starting motor protection method which is used for a starting motor protection structure and comprises the following steps: acquiring a pressure value of main oil pressure of a forklift hydraulic system through a sensor, transmitting the measured pressure value into a controller, and comparing the measured pressure value with a set value by the controller; if the measured pressure value is not less than the set value, controlling the starting switch to be in a disconnected state; and if the measured pressure value is less than the set value, controlling the starting switch to be in a closed state. The protection method for the starting motor has the advantages compared with the prior art, and is not described in detail herein.
The invention provides a telescopic arm forklift, which adopts a starting motor protection method and comprises a forklift body and a starting motor protection structure; the starting motor protection structure is arranged on the forklift body. The telescopic boom forklift has the advantages described above compared to the prior art and is not described here in detail.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic circuit diagram of a protection structure of a starter motor according to an embodiment of the present invention.
Icon:
100-a controller;
200-a sensor;
300-start switch;
400-starting the motor;
500-power supply.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referred device or element 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.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Referring to fig. 1, the present embodiment provides a starter motor protection structure, which includes a controller 100, a sensor 200 for measuring a main oil pressure of a vehicle hydraulic system, and a starter switch 300 for controlling a starter motor 400 to start and stop; the sensor 200 is connected to the controller 100, and the controller 100 controls the start switch 300 to be in an off state when the pressure value measured by the sensor 200 is not less than a set value.
When a worker needs to start a vehicle, the sensor 200 transmits the measured pressure value of the main oil pressure of the hydraulic system to the controller 100, the controller 100 compares the measured pressure value with a set value, if the measured pressure value is not smaller than the set value, the hydraulic system is in a pressure holding state, the starting switch 300 is controlled to be in a disconnected state, the starting of the starting motor 400 is forbidden, the fuse of the starting motor 400 is prevented from being burnt, the maintenance cost is reduced, and the starting motor can work normally.
Specifically, after the sensor 200 measures the pressure value of the main oil pressure of the hydraulic system of the vehicle, the pressure value is transmitted to the controller 100, and the controller 100 compares the measured pressure value with a set value.
If the measured pressure value is not less than the set value, that is, the pressure value of the main oil pressure of the hydraulic system exceeds the set value, the hydraulic system at the moment can be considered to be in a pressure-holding state, and therefore if the starting motor 400 is started at the moment, the starting motor 400 cannot drive the engine to rotate, and fuses of the starting motor 400 are burnt. At this time, the controller 100 turns off the start switch 300 of the starter motor 400, so that the driver cannot start the starter motor 400.
If the measured pressure value is smaller than the set value, it may be determined that the hydraulic system is not in the pressure-holding state, so that the controller 100 may enable the starting switch 300 to be in the on state, and the driver may start the starting motor 400.
It should be noted that the controller 100 can control the opening and closing of the starter switch 300, thereby controlling whether the starter motor 400 can operate.
It should be noted that the starting motor 400 may be a dc motor, or may be selected according to actual conditions, and the switch of the starting motor 400 is always controlled by the starting switch 300.
It should be noted that, according to the actual use condition of the vehicle, the set value can be adjusted by the person skilled in the art.
In an alternative of this embodiment, the sensor 200 employs a pressure sensor 200 or a pressure switch.
Specifically, the sensor 200 may be a pressure sensor 200, and the main oil pressure of the hydraulic system may be directly measured by the pressure sensor 200.
The sensor 200 can also be set to be a pressure switch, and the pressure switch can realize the detection, display, alarm and control signal output of the main oil pressure signal of the hydraulic system, thereby providing great convenience for workers.
It should be noted that the type of the sensor 200 can be selected by those skilled in the art according to actual situations, as long as the main oil pressure of the hydraulic system can be measured.
In an alternative of this embodiment, the start switch 300 is a relay.
Specifically, the start switch 300 is configured as a relay, which is controlled by the controller 100, and the relay can sensitively and rapidly complete the switching state, so that the probability of causing misoperation is reduced to the minimum.
It should be noted that, a person skilled in the art can select the type and model of the relay according to actual conditions and usage conditions, as long as the start of the starter motor 400 can be controlled.
In an alternative embodiment, the sensor 200 is mounted on the hydraulic system main oil pressure line.
Specifically, the sensor 200 is fixedly arranged on a main oil pressure pipeline of the hydraulic system, so that data of main oil pressure of the hydraulic system can be detected in real time.
The main oil pressure of the hydraulic system is measured by installing the sensor 200 on the main oil pressure line of the hydraulic system.
The hydraulic system comprises a hydraulic system main oil pressure pipeline, a controller 100, a hydraulic system main oil pressure pipeline and a hydraulic system main oil pressure pipeline, wherein the hydraulic system main oil pressure pipeline can be provided with two sensors 200, the two sensors 200 are a first sensor and a second sensor respectively, the first sensor and the second sensor both transmit measured pressure values to the controller 100, and the controller 100 obtains an average value of the numerical values of the first sensor and the second sensor and compares the average value with a set value.
In an alternative of this embodiment, a valve for installing the sensor 200 is disposed on the main oil pressure pipeline of the hydraulic system, and the sensor 200 is installed on the valve.
Specifically, a valve is arranged on a main oil pressure pipeline of the hydraulic system, the sensor 200 is fixedly arranged on the valve, and data of the main oil pressure of the hydraulic system can be detected in real time through the sensor 200.
It should be noted that the method and position of the sensor 200 on the valve are well known in the art and can be adjusted by those skilled in the art according to the actual situation.
In an alternative of this embodiment, the starter motor protection structure further includes a power supply 500, and the controller 100, the sensor 200 and the starter switch 300 are all connected to the power supply 500.
Power is supplied to the controller 100, the sensor 200, and the start switch 300 by a power supply 500.
It should be noted that the power source 500 can be electrically connected to the controller 100, the sensor 200 and the start switch 300 by the prior art, and the detailed description thereof is omitted.
Referring to fig. 1, the present embodiment provides a protection method for a starter motor, which is used for a starter motor protection structure, and includes the following steps: acquiring a pressure value of main oil pressure of a vehicle hydraulic system through a sensor 200, transmitting the measured pressure value into a controller 100, and comparing the measured pressure value with a set value by the controller 100; if the measured pressure value is not less than the set value, controlling the starting switch 300 to be in a disconnected state; if the measured pressure value is less than the set value, the start switch 300 is controlled to be in a closed state.
Specifically, can real-time supervision vehicle hydraulic system main oil pressure's pressure value through sensor 200 to compare in setting up surely through the oil pressure value that records, if be greater than or equal to the setting value, starting switch 300 can be controlled to controller 100 and be in the off-state, makes starting motor can't accomplish the start-up operation, can't accomplish the start-up work of engine, avoids starting motor to burn out or burns out the starting motor fuse.
Meanwhile, if the pressure value of the main oil pressure of the hydraulic system measured by the sensor 200 is smaller than the set value, the controller 100 controls the start switch 300 to be in a closed state, so that the start motor can perform the start operation, thereby completing the start operation of the engine.
It should be noted that the setting value can be set by a person skilled in the art according to the actual situation of different vehicles.
In an alternative of this embodiment, the controller 100 compares the measured pressure value with a set value at the time of starting the vehicle.
Specifically, the controller 100 compares the measured pressure value with the set value only when the driver starts the vehicle.
When a driver starts the vehicle, the power supply 500 transmits electric energy to the sensor 200 and the controller 100, so that the controller 100 and the sensor 200 can start to work normally, the sensor 200 transmits measured hydraulic pressure value data to the controller 100, the controller 100 compares the measured pressure value with a set value, and the controller 100 controls the state of the starter switch 300 according to the comparison result, thereby controlling whether the starter motor 400 can start normally.
In an alternative of this embodiment, the set value is a main oil pressure value of the hydraulic system during normal operation.
Specifically, the set value compared with the pressure value measured by the sensor 200 is set to the pressure value of the main oil pressure of the hydraulic system during normal operation, so that the occurrence of misjudgment of the controller can be reduced or even avoided.
The controller 100 compares the measured pressure value of the main oil pressure of the hydraulic system with the pressure value of the hydraulic oil pressure during normal work, so that the probability of misoperation of a driver can be reduced or even eliminated.
The embodiment provides a telescopic arm forklift, which adopts a starting motor protection method and comprises a forklift body and a starting motor protection structure; the starting motor protection structure is arranged on the forklift body.
Specifically, the starting motor protection structure is arranged on the telescopic boom forklift, the starting motor 400 on the telescopic boom forklift can be protected by adopting the starting motor protection method, and the damage to the starting motor 400 can be reduced or even avoided.
It is further noted that the telescopic boom forklift has the above-mentioned advantages over the prior art and will not be described in detail here.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A starter motor protection structure, comprising: the system comprises a controller (100), a sensor (200) for measuring the main oil pressure of a vehicle hydraulic system and a starting switch (300) for controlling the starting and stopping of a starting motor (400);
the sensor (200) is connected with the controller (100), and when the pressure value measured by the sensor (200) is not less than a set value, the controller (100) controls the starting switch (300) to be in a disconnected state.
2. A starter motor protection arrangement according to claim 1, characterized in that the sensor (200) is a pressure sensor or a pressure switch.
3. A starter motor protection arrangement according to claim 1, characterized in that the starter switch (300) is a relay.
4. A starter motor protection arrangement according to any one of claims 1-3, characterized in that the sensor (200) is mounted on the hydraulic system main oil hydraulic line.
5. A starter motor protection arrangement according to claim 4, characterized in that a valve is provided in the hydraulic system main oil pressure line for mounting the sensor (200), the sensor (200) being mounted to the valve.
6. A starter motor protection arrangement according to any one of claims 1-3, characterized in that it further comprises a power source (500), and that the controller (100), the sensor (200) and the starter switch (300) are connected to the power source (500).
7. A starter motor protection method for a starter motor protection structure according to any one of claims 1 to 6, comprising the steps of:
acquiring a pressure value of main oil pressure of a vehicle hydraulic system through a sensor (200), transmitting the measured pressure value into a controller (100), and comparing the measured pressure value with a set value by the controller (100);
if the measured pressure value is not less than the set value, controlling the starting switch (300) to be in a disconnected state;
and controlling the starting switch (300) to be in a closed state if the measured pressure value is less than the set value.
8. The starter motor protection method according to claim 7, wherein the controller (100) compares the measured pressure value with a set value at the time of starting the vehicle.
9. The starter motor protection method according to claim 7 or 8, wherein the set value is a main oil pressure value of the hydraulic system in normal operation.
10. A telescopic boom forklift truck, characterized in that the protection method of the starting motor according to any one of claims 7 to 9 is adopted, comprising a forklift truck body and the protection structure of the starting motor according to any one of claims 1 to 6;
the starting motor protection structure is arranged on the forklift body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911389541.7A CN111115514A (en) | 2019-12-26 | 2019-12-26 | Starting motor protection structure and method thereof and telescopic arm forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911389541.7A CN111115514A (en) | 2019-12-26 | 2019-12-26 | Starting motor protection structure and method thereof and telescopic arm forklift |
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| Publication Number | Publication Date |
|---|---|
| CN111115514A true CN111115514A (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911389541.7A Pending CN111115514A (en) | 2019-12-26 | 2019-12-26 | Starting motor protection structure and method thereof and telescopic arm forklift |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009209819A (en) * | 2008-03-05 | 2009-09-17 | Toyota Motor Corp | Starting control device of internal combustion engine |
| CN201599123U (en) * | 2010-01-27 | 2010-10-06 | 广西开元机器制造有限责任公司 | Start protection device for engine cranking motor of hydraulic excavator |
| CN102261296A (en) * | 2010-05-31 | 2011-11-30 | 三一重型装备有限公司 | Air startup protection device of diesel engine and air startup diesel engine comprising same |
| CN102493904A (en) * | 2011-12-02 | 2012-06-13 | 中联重科股份有限公司 | Control equipment, method and system for protecting starting motor and engineering mechanical equipment |
-
2019
- 2019-12-26 CN CN201911389541.7A patent/CN111115514A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009209819A (en) * | 2008-03-05 | 2009-09-17 | Toyota Motor Corp | Starting control device of internal combustion engine |
| CN201599123U (en) * | 2010-01-27 | 2010-10-06 | 广西开元机器制造有限责任公司 | Start protection device for engine cranking motor of hydraulic excavator |
| CN102261296A (en) * | 2010-05-31 | 2011-11-30 | 三一重型装备有限公司 | Air startup protection device of diesel engine and air startup diesel engine comprising same |
| CN102493904A (en) * | 2011-12-02 | 2012-06-13 | 中联重科股份有限公司 | Control equipment, method and system for protecting starting motor and engineering mechanical equipment |
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Application publication date: 20200508 |