CN211283606U - Control system for preventing forward overturning of electric forklift - Google Patents
Control system for preventing forward overturning of electric forklift Download PDFInfo
- Publication number
- CN211283606U CN211283606U CN201921744031.2U CN201921744031U CN211283606U CN 211283606 U CN211283606 U CN 211283606U CN 201921744031 U CN201921744031 U CN 201921744031U CN 211283606 U CN211283606 U CN 211283606U
- Authority
- CN
- China
- Prior art keywords
- switch
- power supply
- motor controller
- energy storage
- fuse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model relates to a control system that electric fork-lift truck prevented turn over before, including energy storage power supply B1, its anodal positive power input end Bin + that loops through first fuse F1 and key switch S1 and power converter is connected, power converter 'S positive power output end Bout + is connected the one end of the switch KM2 of turning over acceleration sensor switch S4 and second relay before connecting respectively through third fuse F3, the other end of turning over acceleration sensor switch S4 connects the signal detection port that turns over before of motor controller before, the other end of the switch KM2 of second relay links to each other with the one end of buzzing warning light, energy storage power supply B1' S positive pole still loops through main contactor 'S switch KM1 and second fuse F2 and motor controller' S power input port connection. This novel can realize electric fork-lift truck at specific occasion during operation, effectively restrict the hoisting speed, height and the inclination of portal, eliminate the inaccurate production error of manual control and lead to the potential safety hazard such as electric fork-lift truck turns over before.
Description
Technical Field
The utility model belongs to the technical field of electric fork truck technique and specifically relates to a control system that turns over before electric fork truck prevention.
Background
The electric forklift is a forklift which takes a storage battery as a power source, converts electric energy into mechanical energy through a motor to drive the forklift to walk and converts the electric energy into hydraulic energy to drive a working device to work. The electric forklift has the characteristics of small power device volume, simple and flexible operation, low noise, no tail gas emission and the like.
In practical application, the electric forklift needs to work in different occasions and different working conditions, and in specific occasions, when a customer uses the forklift to fork goods, the situation that the weight of the goods exceeds the maximum freight weight of the forklift exists due to the fact that the weight of the goods is not known, and the situation that the forklift tilts forwards when the fork lifts the goods can be discovered; meanwhile, when the weight of the fork-taking goods is close to the maximum lifting load, the gravity center of the forklift changes along with the lifting or the inclination of the fork, the danger that the forklift turns forwards easily occurs, the goods and the forklift are damaged, and meanwhile, the personal safety of a driver is harmed or even the life is threatened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a realize electric fork-lift truck at specific occasion during operation, effectively restrict the play-up speed, height and the inclination of portal, eliminate the inaccurate error that produces of manual control and lead to the electric fork-lift truck of the potential safety hazard such as the electric fork-lift truck anteversion control system that turns over before preventing.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a control system for preventing forward overturning of an electric forklift comprises an energy storage power supply B1, wherein the anode of the energy storage power supply B1 is connected with the anode power supply input end Bin + of a power converter sequentially through a first fuse F1 and a key switch S1, the anode power supply output end Bout + of the power converter is connected with one end of a forward overturning acceleration sensor switch S4 and one end of a switch KM2 of a second relay respectively through a third fuse F3, the other end of the forward overturning acceleration sensor switch S4 is connected with a forward overturning signal detection port of a motor controller, the other end of the switch KM2 of the second relay is connected with one end of a buzzer warning lamp, the other end of the buzzer warning lamp is connected with the cathode of the energy storage power supply B1, one end of a coil L2 of the second relay is connected with the forward overturning signal detection port of the motor controller, and the other end of a coil L2 of the second relay is connected with the cathode; the positive pole of the energy storage power supply B1 is connected with the power input port Bin of the motor controller sequentially through the switch KM1 and the second fuse F2 of the main contactor, the power unit wiring terminal U, V, W of the motor controller is connected with the corresponding outgoing line of the motor M, the power output end Bout of the motor controller is connected with the negative pole of the energy storage power supply B1, the lifting speed port and the tilting speed port of the motor controller are respectively connected with one ends of the first switch S2 and the second switch S3, and the power input port KS1, the other end of the first switch S2 and the other end of the second switch S3 of the motor controller are connected and then connected between the key switch S1 and the positive power input end Bin + of the power converter.
The model of the power converter is HWZ8-48V-12V-300W, and the model of the motor controller is ST10F 276.
The switch KM1 of the main contactor and the coil L1 of the main contactor form the main contactor, and the coil L1 of the main contactor is connected between the first control port NMC and the second control port PMC of the motor controller in a bridge mode.
And a negative electrode wiring terminal B-of the motor controller is connected with the negative electrode of the energy storage power supply B1.
According to the above technical scheme, the beneficial effects of the utility model are that: firstly, the utility model has simple circuit, strong universality and low cost; secondly, the lifting speed, the height and the inclination angle of the gantry can be effectively limited when the electric forklift works in a specific occasion, potential safety hazards such as forward turning of the electric forklift due to errors caused by inaccurate manual control are eliminated, meanwhile, a warning function can be realized through the arranged buzzing warning lamp, a worker is timely reminded of the working state of the electric forklift, and the electric forklift can be effectively guaranteed to work in a safe state; thirdly, when the normal work is recovered, the maximum lifting height and the maximum lifting speed of the electric forklift can be rapidly recovered to the normal working state, the working efficiency of the electric forklift is improved, the use is convenient, the use requirements of people are met, and the popularization and the use are facilitated.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
As shown in fig. 1, a control system for preventing forward tipping of an electric forklift is characterized in that: the energy storage type power supply comprises an energy storage power supply B1, the anode of the energy storage power supply B1 is sequentially connected with an anode power supply input end Bin + of a power converter 2 through a first fuse F1 and a key switch S1, an anode power supply output end Bout + of the power converter 2 is respectively connected with a forward-turning acceleration sensor switch S4 and one end of a switch KM2 of a second relay 4 through a third fuse F3, the other end of the forward-turning acceleration sensor switch S4 is connected with a forward-turning signal detection port of a motor controller 1, the other end of a switch KM2 of the second relay 4 is connected with one end of a buzzer warning lamp 3, the other end of the buzzer warning lamp 3 is connected with the cathode of an energy storage power supply B1, one end of a coil L2 of the second relay 4 is connected with the forward-turning signal detection port of the motor controller 1, and the other end of a coil L2 of the second; the positive pole of the energy storage power supply B1 is connected with a power input port Bin of the motor controller 1 sequentially through a switch KM1 and a second fuse F2 of the main contactor, a power unit wiring terminal U, V, W of the motor controller 1 is connected with an outgoing line corresponding to the motor M, a power output end Bout of the motor controller 1 is connected with the negative pole of the energy storage power supply B1, a lifting speed port and a tilting speed port of the motor controller 1 are respectively connected with one ends of a first switch S2 and a second switch S3, and a power input port KS1 of the motor controller 1, the other end of the first switch S2 and the other end of the second switch S3 are connected and then connected between a key switch S1 and the positive power input end Bin + of the power converter 2.
As shown in FIG. 1, the power converter 2 is of the type HWZ8-48V-12V-300W and the motor controller 1 is of the type ST10F 276.
The switch KM1 of the main contactor and the coil L1 of the main contactor form the main contactor, and the coil L1 of the main contactor is connected across the first control port NMC and the second control port PMC of the motor controller 1.
And the negative pole power supply B-of the power converter 2 is connected with the negative pole of the energy storage power supply B1.
The present invention will be further described with reference to fig. 1.
The utility model discloses an energy storage power supply B1 adopts the battery, when the customer was getting the goods using the fork truck fork, there was the condition that the goods weight surpassed the rated cargo carrying weight of fork truck, at first open key switch S1, energy storage power supply B1 'S positive pole loops through first fuse F1, key switch S1 is connected with motor controller 1' S power input port KS1, after motor controller 1 got electric self-checking, main contactor 'S coil L1 produced the voltage difference, make main contactor' S switch KM1 actuation switch-on, motor controller 1 'S power unit got electric, motor controller 1' S power unit binding post U, V, W is connected with the lead-out wire that motor M corresponds, simultaneously, power converter 2 is for with the DC-DC power converter that converts +48/80v direct current into +12/24v direct current, reclose first switch S2, first switch S2 is for lifting switch, the goods are lifted, then a second switch S3 is closed, the second switch S3 is provided with an angle sensor, the second switch S3 is closed, the goods incline backwards along with the forward tilting of the portal frame, the gravity center of the forklift tilts forwards along with the lifting and the tilting of the goods, when the forward tilting angle of the forklift exceeds a certain range, the switch S4 of the forward tilting acceleration sensor is intermittently closed, the intermittent closing refers to the situation that the switch is closed for a moment and opened for a moment in a short time, and the time of opening and closing can be monitored through a controller; the motor controller 1 inputs a speed limiting instruction to the motor M, the motor M rotates at a limited speed after receiving the instruction, the goods lifting speed is reduced, the inclination angle is reduced, the speed is reduced, the switch KM2 of the second relay 4 is powered on in an attracting mode, the buzzing warning lamp 3 is lightened and gives out an intermittent warning sound, a warning effect is achieved, and working personnel are reminded of the working state of the electric forklift in time; when the forward inclination angle of the forklift exceeds a safety range, the forward-tipping acceleration sensor switch S4 is always closed, the motor controller 1 inputs a rotation stopping instruction to the motor M, the motor M stops rotating after receiving the instruction, the goods stop lifting and inclining, the buzzing warning lamp 3 is on and sends out continuous warning sound, a warning effect is achieved, the potential safety hazard that the forward tipping is caused by errors generated by manual control is eliminated, and the forward tipping accident of the electric forklift during working in a specific occasion is avoided.
When the weight of goods is smaller than the rated load weight of the forklift and the electric forklift normally works, a key switch S1 is turned on, the anode of an energy storage power supply B1 is sequentially connected with a power input port KS1 of a motor controller 2 through a first fuse F1 and a key switch S1, after the motor controller 1 is electrified and self-checked, a voltage difference is generated by a coil L1 of a main contactor connected between a first control port NMC and a second control port PMC of the motor controller 1 in series, so that a contact of a switch KM1 of the main contactor connected with an anode connecting terminal of the motor controller 1 through a second fuse F2 is switched on in a suction mode, a power unit of the motor controller 1 is electrified, a first switch S2 connected with a lifting speed port of the motor controller 1 is closed, the first switch S2 is a lifting switch, a second switch S3 connected with a tilting speed port of the motor controller 1 is closed, and a second switch S3 is a tilting switch, namely a microswitch for controlling the inclination of the portal frame by the forklift.
In summary, the utility model has simple circuit, strong versatility and low cost; the lifting speed, the height and the inclination angle of the gantry can be effectively limited when the electric forklift works in a specific occasion, potential safety hazards such as forward turning of the electric forklift due to errors caused by inaccurate manual control are eliminated, meanwhile, the warning function can be realized through the arranged buzzing warning lamp, a worker is timely reminded of the working state of the electric forklift, and the electric forklift can be effectively guaranteed to work in a safe state; when the electric forklift recovers to normal work, the maximum lifting height and the maximum lifting speed of the electric forklift can be rapidly recovered to normal work state, the working efficiency of the electric forklift is improved, the use is convenient, the use requirements of people are met, and the electric forklift is favorable for popularization and use.
Claims (4)
1. The utility model provides a control system that electronic fork truck prevented turning over before which characterized in that: comprises an energy storage power supply B1, the anode of the energy storage power supply B1 is connected with the anode power supply input end Bin + of the power converter (2) through a first fuse F1 and a key switch S1 in turn, the positive power output end Bout + of the power converter (2) is respectively connected with one end of a forward-turning acceleration sensor switch S4 and one end of a switch KM2 of a second relay (4) through a third fuse F3, the other end of the forward-turning acceleration sensor switch S4 is connected with a forward-turning signal detection port of a motor controller (1), the other end of the switch KM2 of the second relay (4) is connected with one end of a buzzer warning lamp (3), the other end of the buzzer warning lamp (3) is connected with the negative electrode of an energy storage power supply B1, one end of a coil L2 of the second relay (4) is connected with the forward-turning signal detection port of the motor controller (1), and the other end of a coil L2 of the second relay (4) is connected with the negative electrode of the energy storage power supply B1; the positive pole of the energy storage power supply B1 is connected with a power supply input port Bin of the motor controller (1) sequentially through a switch KM1 and a second fuse F2 of the main contactor, a power unit wiring terminal U, V, W of the motor controller (1) is connected with a corresponding outgoing line of the motor M, a power supply output end Bout of the motor controller (1) is connected with the negative pole of the energy storage power supply B1, a lifting speed port and an inclination speed port of the motor controller (1) are respectively connected with one ends of a first switch S2 and a second switch S3, and a power supply input port KS1 of the motor controller (1), the other end of the first switch S2 and the other end of the second switch S3 are connected and then connected between a key switch S1 and the positive power supply input end Bin + of the power converter (2).
2. The electric forklift forward rollover prevention control system according to claim 1, characterized in that: the model of the power converter (2) is HWZ8-48V-12V-300W, and the model of the motor controller (1) is ST10F 276.
3. The electric forklift forward rollover prevention control system according to claim 1, characterized in that: the switch KM1 of the main contactor and the coil L1 of the main contactor form the main contactor, and the coil L1 of the main contactor is connected between the first control port NMC and the second control port PMC of the motor controller (1) in a bridge mode.
4. The electric forklift forward rollover prevention control system according to claim 1, characterized in that: and the negative pole power supply B-of the power converter (2) is connected with the negative pole of the energy storage power supply B1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921744031.2U CN211283606U (en) | 2019-10-17 | 2019-10-17 | Control system for preventing forward overturning of electric forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921744031.2U CN211283606U (en) | 2019-10-17 | 2019-10-17 | Control system for preventing forward overturning of electric forklift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211283606U true CN211283606U (en) | 2020-08-18 |
Family
ID=72014674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921744031.2U Active CN211283606U (en) | 2019-10-17 | 2019-10-17 | Control system for preventing forward overturning of electric forklift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211283606U (en) |
-
2019
- 2019-10-17 CN CN201921744031.2U patent/CN211283606U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109378884B (en) | Fault grading and interaction control system and method based on battery management system | |
| CN107215829B (en) | Electric fork truck operation control system | |
| CN113371647A (en) | Remote control type small electric driving folding forklift | |
| CN211283606U (en) | Control system for preventing forward overturning of electric forklift | |
| CN210366745U (en) | Moment limit safety circuit suitable for straight arm lorry-mounted crane | |
| CN211308254U (en) | Electric control system of standard rail industrial and mining electric locomotive | |
| CN209367751U (en) | A kind of control device of electri forklift pallet fork Automatic Levelling | |
| CN206379287U (en) | Contact switch is detected and arc-control device | |
| CN111003663A (en) | Automatic in-place device for lifting height of fork of electric forklift and control method | |
| CN103183296A (en) | Pump motor cataclinal power generation control system | |
| CN211892862U (en) | Refrigeration house forklift control device | |
| CN207078983U (en) | A kind of electri forklift operation control system | |
| JP2949497B1 (en) | Cargo work vehicle | |
| CN212222225U (en) | Crane control circuit and crane | |
| CN105625249B (en) | Dismountable type road steel scrap cleaning plant | |
| CN201010460Y (en) | Over loading warning device of truck crane front supporting leg | |
| JP3162937U (en) | Power unit and lift device using the same | |
| CN218174568U (en) | Safe starting control device of electric forklift | |
| CN216807903U (en) | Rotary braking power-off protection device of tower crane | |
| CN214164962U (en) | Automatic parking system of electric forklift | |
| CN210609817U (en) | Light control loop | |
| JPS5846916Y2 (en) | Alarm circuit for battery lift | |
| CN220684603U (en) | Control system of seat type forward forklift | |
| CN201261428Y (en) | Cargo box hoisting alarming control device of self-discharging vehicle | |
| CN214728476U (en) | Control circuit for rear combination lamp of electric standing type forward-moving forklift |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |