阅读说明：本技术 一种内燃叉车行车安全控制装置 (Driving safety control device of diesel fork truck ) 是由 张玉 白迎春 卓纳麟 孙光英 任西刚 陈颖 于 2020-03-31 设计创作，主要内容包括：本发明涉及一种内燃叉车行车安全控制装置,包括控制器,其M1端口与第三保险丝F3的一端相连,其M2、M3、M4、M5、M6、M7端口分别与座椅开关S2、安全带开关S3、停车制动开关S4、前进方向开关S5、中位方向开关S6、后退方向开关S7的一端一一对应相连,其M9端口与蜂鸣器的一端相连,其M10端口与警示灯的一端相连,其M11、M12端口与车速检测单元相连,其M13端口与制动压力传感器的一端相连,其M14、M15端口分别与后退电磁阀Y2、前进电磁阀Y1一一对应相连。在整车行驶中,如果整车行驶速度超过安全车速,通过警示灯和蜂鸣器提示,控制器通过CAN总线输出信号给发动机,发动机调整转速从而限制整车行驶速度,以保证整车安全行驶。(The invention relates to a running safety control device of an internal combustion forklift, which comprises a controller, wherein an M1 port of the controller is connected with one end of a third fuse F3, M2, M3, M4, M5, M6 and M7 ports of the controller are respectively connected with a seat switch S2, a safety belt switch S3, a parking brake switch S4, a forward direction switch S5, a middle direction switch S6 and one end of a reverse direction switch S7 in a one-to-one correspondence mode, an M9 port of the controller is connected with one end of a buzzer, an M10 port of the controller is connected with one end of a warning lamp, M11 and M12 ports of the controller are connected with a vehicle speed detection unit, an M13 port of the controller is connected with one end of a brake pressure sensor, and M14 and M15 ports of the controller are respectively connected with a reverse solenoid valve Y2 and a forward solenoid valve. When the whole vehicle runs, if the running speed of the whole vehicle exceeds the safe vehicle speed, the warning lamp and the buzzer prompt, the controller outputs a signal to the engine through the CAN bus, and the engine adjusts the rotating speed so as to limit the running speed of the whole vehicle and ensure the safe running of the whole vehicle.)

1. The utility model provides a diesel fork truck driving safety control device which characterized in that: the controller adopts a PIC18F25K80 chip, the port of M1 of the controller is connected with one end of a third fuse F3, the ports of M2, M3, M4, M5, M6 and M7 of the controller are respectively connected with a seat switch S2, a safety belt switch S3, a parking brake switch S4, a forward direction switch S5, a middle direction switch S6 and one end of a backward direction switch S7 in a one-to-one correspondence manner, the port of M9 of the controller is connected with one end of a buzzer (1), the port of M10 of the controller is connected with one end of a warning lamp (2), the ports of M11 and M12 of the controller are connected with a vehicle speed detection unit, the port of M9 of the controller is connected with one end of a brake pressure sensor, and the ports of M14 and M15 of the controller are respectively connected with a backward solenoid valve Y2 and a forward solenoid valve Y;

The other ends of the seat switch S2, the safety belt switch S3, the parking brake switch S4, the forward direction switch S5, the middle direction switch S6 and the backward direction switch S7 are connected in parallel, and the parallel end is one end of a common end COM1 connected with a second fuse F2; the other ends of the buzzer (1) and the warning lamp (2) are connected in parallel, and the parallel end is a common end COM2 connected with one end of a fourth fuse F4; the other ends of the second fuse F2, the third fuse F3 and the fourth fuse F4 are connected in parallel and are connected with one end of the starting switch S1 in parallel, the other end of the starting switch S1 is connected with one end of the first fuse F1, and the other end of the first fuse F1 is connected with the positive pole B + of the storage battery.

2. The diesel forklift driving safety control device according to claim 1, characterized in that: the PIC18F25K80 chip is connected with an engine through a CAN bus, one end of a coil of the forward solenoid valve Y1 is connected with an M15 port of the PIC18F25K80 chip, one end of a coil of the backward solenoid valve Y2 is connected with an M14 port of the PIC18F25K80 chip, and the other end of the coil of the forward solenoid valve Y1, the other end of the coil of the backward solenoid valve Y2 and the grounding end of the PIC18F25K80 chip are all connected with a negative electrode B-of the storage battery; the moving contact of the forward solenoid valve Y1 and the moving contact of the backward solenoid valve Y2 are both connected with a common end COM2, the static contact of the forward solenoid valve Y1 is connected with a V1 port of the gearbox, and the static contact of the backward solenoid valve Y2 is connected with a V2 port of the gearbox.

3. The forklift traffic safety control device according to claim 2, characterized in that: the gearbox is respectively mechanically connected with the front axle and the engine, and the front axle is mechanically connected with the brake pressure sensor.

Technical Field

The invention relates to the technical field of forklift control, in particular to a driving safety control device for an internal combustion forklift.

Background

At present, the diesel fork lift truck is widely used in various industries around the world as a carrying tool in special working condition environments. Every year, safety accidents in the running process of the forklift occur, and a large amount of casualties and property loss are caused by the accidents. How to effectively avoid the accidents occurring in the running process of the forklift becomes a key index of the safety design of the forklift. At present, in order to ensure the safe driving of the forklift, besides that a driver complies with safety regulations and operates proficiently, most of all forklift manufacturers need to design a forklift safe driving control system in an all-around manner, so that the driving safety of the forklift is controlled and protected from the aspect of active safety. The driving safety control device of the diesel fork truck is urgently needed, can fill the blank in the aspect of the driving safety technology of the fork truck in the current market, and provides certain guarantee for the driving safety of the fork truck.

Disclosure of Invention

The invention aims to provide a running safety control device of an internal combustion forklift, which realizes the safety running function of the forklift, reduces the running safety risk, and effectively ensures the personnel safety and property safety in the running process of a vehicle.

In order to achieve the purpose, the invention adopts the following technical scheme: a driving safety control device of an internal combustion forklift comprises a controller, wherein the controller adopts a PIC18F25K80 chip, the port M1 of the controller is connected with one end of a third fuse F3, the ports M2, M3, M4, M5, M6 and M7 of the controller are respectively connected with a seat switch S2, a safety belt switch S3, a parking brake switch S4, a forward direction switch S5, a middle direction switch S6 and one end of a backward direction switch S7 in a one-to-one correspondence manner, the port M9 of the controller is connected with one end of a buzzer, the port M10 of the controller is connected with one end of a warning lamp, the ports M11 and M12 of the controller are connected with a vehicle speed detection unit, the port M13 of the controller is connected with one end of a brake pressure sensor, and the ports M14 and M15 of the controller are respectively connected with a backward solenoid valve Y2 and a forward solenoid;

The other ends of the seat switch S2, the safety belt switch S3, the parking brake switch S4, the forward direction switch S5, the middle direction switch S6 and the backward direction switch S7 are connected in parallel, and the parallel end is one end of a common end COM1 connected with a second fuse F2; the other ends of the buzzer and the warning lamp are connected in parallel, and the parallel end is a common end COM2 connected with one end of a fourth fuse F4; the other ends of the second fuse F2, the third fuse F3 and the fourth fuse F4 are connected in parallel and are connected with one end of the starting switch S1 in parallel, the other end of the starting switch S1 is connected with one end of the first fuse F1, and the other end of the first fuse F1 is connected with the positive pole B + of the storage battery.

The PIC18F25K80 chip is connected with an engine through a CAN bus, one end of a coil of the forward solenoid valve Y1 is connected with an M15 port of the PIC18F25K80 chip, one end of a coil of the backward solenoid valve Y2 is connected with an M14 port of the PIC18F25K80 chip, and the other end of the coil of the forward solenoid valve Y1, the other end of the coil of the backward solenoid valve Y2 and the grounding end of the PIC18F25K80 chip are all connected with a negative electrode B-of the storage battery; the moving contact of the forward solenoid valve Y1 and the moving contact of the backward solenoid valve Y2 are both connected with a common end COM2, the static contact of the forward solenoid valve Y1 is connected with a V1 port of the gearbox, and the static contact of the backward solenoid valve Y2 is connected with a V2 port of the gearbox.

The gearbox is respectively mechanically connected with the front axle and the engine, and the front axle is mechanically connected with the brake pressure sensor.

According to the technical scheme, the beneficial effects of the invention are as follows: firstly, judging whether a whole vehicle running triggering condition is met or not by actively detecting the states of a plurality of safety switches, if the whole vehicle running speed exceeds the safe vehicle speed in the whole vehicle running process, prompting through a warning lamp and a buzzer, outputting a signal to an engine through a Controller Area Network (CAN) bus by a controller, and regulating the rotating speed by the engine so as to limit the whole vehicle running speed and ensure the safe running of the whole vehicle; secondly, judging whether the operator meets the requirement of safely driving the vehicle by judging the seat switch signal, the safety belt switch signal and the parking brake switch state, triggering the whole vehicle driving signal on the premise of meeting the requirement, and ensuring the safe driving of the whole vehicle; thirdly, the brake is released before the whole vehicle runs by detecting the state of the brake pressure signal, so that the running requirement of the whole vehicle is met; fourthly, whether the running speed of the whole vehicle is within a set range or not is judged by detecting the vehicle speed value, and the requirement of safe running of the whole vehicle is met.

Drawings

Fig. 1 is a circuit block diagram of the present invention.

Detailed Description

As shown in fig. 1, the driving safety control device of the diesel fork lift truck comprises a controller, wherein the controller adopts a PIC18F25K80 chip, a port M1 of the controller is connected with one end of a third fuse F3, ports M2, M3, M4, M5, M6 and M7 are respectively connected with a seat switch S2, a seat belt switch S3, a parking brake switch S4, a forward direction switch S5, a middle direction switch S6 and one end of a backward direction switch S7 in a one-to-one correspondence manner, a port M9 of the controller is connected with one end of a buzzer 1, a port M10 of the controller is connected with one end of a warning light 2, ports M11 and M12 of the controller are connected with a vehicle speed detection unit, a port M13 of the controller is connected with one end of a brake pressure sensor, and ports M14 and M15 of the controller are respectively connected with a backward electromagnetic valve Y2 and a forward electromagnetic valve Y1;

As shown in fig. 1, the other ends of the seat switch S2, the seatbelt switch S3, the parking brake switch S4, the forward direction switch S5, the neutral direction switch S6 and the reverse direction switch S7 are connected in parallel, and the parallel end is a common end COM1 connected to one end of a second fuse F2; the other ends of the buzzer 1 and the warning lamp 2 are connected in parallel, and the parallel end is a common end COM2 connected with one end of a fourth fuse F4; the other ends of the second fuse F2, the third fuse F3 and the fourth fuse F4 are connected in parallel and are connected with one end of the starting switch S1 in parallel, the other end of the starting switch S1 is connected with one end of the first fuse F1, and the other end of the first fuse F1 is connected with the positive pole B + of the storage battery.

As shown in fig. 1, the PIC18F25K80 chip is connected to the engine through a CAN bus, one end of the coil of the forward solenoid valve Y1 is connected to the M15 port of the PIC18F25K80 chip, one end of the coil of the backward solenoid valve Y2 is connected to the M14 port of the PIC18F25K80 chip, and the other end of the coil of the forward solenoid valve Y1, the other end of the coil of the backward solenoid valve Y2, and the ground terminal of the PIC18F25K80 chip are all connected to the negative electrode B —; the moving contact of the forward solenoid valve Y1 and the moving contact of the backward solenoid valve Y2 are both connected with a common end COM2, the static contact of the forward solenoid valve Y1 is connected with a V1 port of the gearbox, and the static contact of the backward solenoid valve Y2 is connected with a V2 port of the gearbox. The gearbox is respectively mechanically connected with the front axle and the engine, and the front axle is mechanically connected with the brake pressure sensor.

The invention is further described below with reference to fig. 1.

After the start switch S1 is closed, the battery supplies power to the seat switch S2, the seatbelt switch S3, the parking brake switch S4, the forward direction switch S5, the neutral direction switch S6, and the reverse direction switch S7 through the second fuse F2, supplies power to the controller through the third fuse F3, and supplies power to the buzzer 1, the warning light 2, the forward solenoid valve Y1, and the reverse solenoid valve Y2 through the fourth fuse F4. The controller detects whether the seat switch S2 is closed or not in sequence before the whole vehicle walks, judges that an operator normally sits on the seat, closes the seat switch S2 only when the operator sits on the seat,

The controller starts to detect whether the safety belt switch S3 is disconnected or not, judges whether an operator fastens a safety belt or not, only when the safety belt switch S3 is in a disconnected state, the controller starts to detect whether the parking brake switch S4 is disconnected or not, only when the parking brake switch S4 is in a disconnected state, the controller starts to detect whether the brake pressure sensor detects that the brake pressure value in the front axle is in a set range or not, only when the brake pressure value in the front axle is in the set range, the controller receives a signal of the forward direction switch S5 (or the backward direction switch S7), outputs a control signal to trigger the forward solenoid valve Y1 (or the backward solenoid valve Y2) to work so as to trigger the transmission to work, and the whole vehicle runs in the safe forward direction (or backward. If the above sequence is not performed, even if the controller receives a signal from the forward direction switch S5 (or the reverse direction switch S7), the entire vehicle cannot travel, and the forward direction switch S5 (or the reverse direction switch S7) automatically jumps to the neutral direction switch S6.

The controller detects the speed information input by the speed detection unit when the whole vehicle is in normal running, judges whether the current speed value is within the set safe speed, and if the current speed value is within the set safe speed, the whole vehicle keeps normal running; if the current vehicle speed value is not within the set safe vehicle speed, the controller outputs a control signal to drive the buzzer 1 to work to generate a buzzing sound, the warning lamp 2 is lightened to work to remind an operator that the running speed of the whole vehicle exceeds the set safe vehicle speed, and meanwhile, the controller sends a signal to the engine through the CAN bus to trigger the engine to adjust and reduce the current rotating speed so as to reduce the running speed of the whole vehicle and ensure that the whole vehicle runs within the set safe vehicle speed. Here, the safe vehicle speed and the brake pressure value are company-specific setting data.

The storage battery B is used as a system power supply, and when the starting switch S1 is closed, the controller, the buzzer 1 and the warning lamp 2 which are connected with the starting switch S1 are powered on. After the controller is powered on, the system performs self-checking, detects that the signal of the port M2 is 12V voltage, and judges that an operator sits on the seat; detecting that the voltage at the port M3 is 0V, and judging that the operator fastens the safety belt; detecting that the voltage at the port M4 is 0V, and judging that the parking brake switch S4 is released; detecting that the service brake meets the service requirement within a signal setting range output by a brake pressure sensor received by an M13 port; detecting that the port signal of the M5 is 12V voltage, judging that the whole vehicle needs to have a forward requirement, controlling the port M16 of the controller to output a 12V voltage signal, driving a contact of a forward electromagnetic valve Y1 to close, working and outputting a Y1 signal to a V1 port of a gearbox, and enabling the whole vehicle to safely move forward; and detecting that the port signal of the M7 is 12V voltage, judging that the whole vehicle needs to retreat, controlling the port M15 of the controller to output a 12V voltage signal, driving a contact of a retreat electromagnetic valve Y2 to close to work, outputting a Y2 signal to a V2 port of a gearbox, and safely retreating the whole vehicle. In the safe running of the whole vehicle, the ports M11 and M12 of the controller detect the running speed value of the whole vehicle collected by the vehicle speed detection unit, if the current vehicle speed value is not within the set safe vehicle speed, the controller outputs a control signal to drive the buzzer 1 to work to emit buzzing sound, the warning lamp 2 lights a warning to remind an operator that the running speed of the whole vehicle exceeds the set safe vehicle speed, meanwhile, the controller sends a signal to the engine through a CAN bus, and the engine adjusts and reduces the current rotating speed so as to limit the running speed of the whole vehicle, thereby ensuring the safe running of the whole vehicle.

When the controller is powered on and self-checked, a signal of a port M2 connected to a seat switch S2 is detected to be in an off state, at the moment, a direction switch can only be kept in a middle direction switch S6 state, and the whole vehicle cannot walk; when the controller is powered on and self-checked, a port M2 signal connected to a seat switch S2 is detected to be in a closed state, a port M3 signal connected to a safety belt switch S3 is detected to be in a closed state, at the moment, a direction switch can only be kept in a middle direction switch S6, and the whole vehicle cannot walk; when the controller is powered on and self-checked, a port M2 signal connected to a seat switch S2 is detected to be in a closed state, a port M3 signal connected to a safety belt switch S3 is detected to be in an open state, a port M4 signal connected to a parking brake switch S4 is detected to be in a closed state, at the moment, a direction switch can only be kept in a middle direction switch S6, and the whole vehicle cannot walk; when the controller is powered on and self-checked, a port M2 signal connected to a seat switch S2 is detected to be in a closed state, a port M3 signal connected to a safety belt switch S3 is detected to be in an open state, a port M4 signal connected to a parking brake switch S4 is detected to be in an open state, a port M13 connected to a brake pressure sensor is detected to detect that a brake pressure value in a front axle is not in a set range, at the moment, the direction switch can only be kept in a middle direction switch S6, and the whole vehicle cannot walk; when the controller is powered on and self-tested, the signal of a port M2 connected to a seat switch S2 is detected to be in a closed state, the signal of a port M3 connected to a safety belt switch S3 is detected to be in an open state, the signal of a port M4 connected to a parking brake switch S4 is detected to be in an open state, the signal of a port M13 connected to a brake pressure sensor is detected to be in a set range, and the controller receives the output of a forward direction switch S5 (or a reverse direction switch S7) to control a forward electromagnetic valve Y1 (or a reverse electromagnetic valve Y2) to trigger and control the operation of a gearbox, so that the whole vehicle runs safely. When the vehicle speed value exceeds the set safe vehicle speed value in the running of the whole vehicle, the controller is connected with a port M9 of the buzzer 1 to output a control signal, the buzzer 1 buzzes when working, the port M10 connected with the warning lamp 2 outputs the control signal, the warning lamp 2 lights up to warn an operator that the running speed of the whole vehicle exceeds the safe vehicle speed, meanwhile, the controller sends a signal to the engine through a CAN bus, and the engine adjusts and reduces the current rotating speed so as to reduce the running speed of the whole vehicle and ensure the safe running of the whole vehicle.

In conclusion, the invention judges whether the condition for triggering the whole vehicle running is met or not by actively detecting the states of the plurality of safety switches, if the whole vehicle running speed exceeds the safe vehicle speed in the whole vehicle running process, the warning lamp and the buzzer prompt, the controller outputs a signal to the engine through the CAN bus, and the engine adjusts the rotating speed so as to limit the whole vehicle running speed and ensure the safe running of the whole vehicle.