CN219136287U

CN219136287U - Forklift pedestrian safety alarm system

Info

Publication number: CN219136287U
Application number: CN202222984911.5U
Authority: CN
Inventors: 刘建国
Original assignee: Huaneng Taicang Power Generation Co Ltd
Current assignee: Huaneng Taicang Power Generation Co Ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-06-06
Anticipated expiration: 2032-11-09

Abstract

The utility model belongs to the technical field of storage safety, and particularly relates to a forklift pedestrian safety alarm system, which comprises infrared ranging sensors respectively arranged on the front side and the rear side of a forklift and a scale arranged on a forklift mast, wherein a cargo height measuring device is arranged on the scale; the system also comprises a processor and an alarm device, wherein the processor is connected with the infrared ranging sensor, the cargo height measuring device and the alarm device. According to the utility model, the safety distance of the forklift can be adjusted through the height of the cargoes on the forklift, so that safety early warning is automatically carried out when pedestrians enter the safety distance, the safety of the forklift in the running process is higher, and casualties caused by poor sight of drivers are reduced.

Description

Forklift pedestrian safety alarm system

Technical Field

The utility model belongs to the technical field of storage safety, and particularly relates to a forklift pedestrian safety alarm system.

Background

Fork trucks are industrial transportation vehicles, and are various wheeled transportation vehicles that perform handling, stacking, and short-distance transportation operations on pallet goods. The forklift truck carries heavy goods, and can sequentially carry heavy goods of several tons. Under the general condition, the cargoes stacked in front of the forklift are more, the sight of a driver is blocked, if pedestrians come out of the way of braking, the things of hitting and pressing the pedestrians often happen, and the pedestrians are directly killed when serious.

Different types of forklifts, different weight and volume of transported goods, and larger safety distance is needed if the forklifts transporting the goods with larger volume collide and the goods fall over to damage the range; and even if the forklift is the same, when cargoes with different volumes are transported, the heights of the cargoes are different, and the safety distance of the cargoes can also be changed. The safety distance of some existing forklift pedestrian safety systems is fixed, and when the transported goods are too much, the height is increased, and the monitoring range of the forklift cannot be increased.

Disclosure of Invention

Aiming at the technical problem that the safety distance monitoring of a common forklift cannot be automatically increased in the background art, the utility model provides a forklift pedestrian safety alarm system, which adjusts the safety alarm distance of the forklift by the height of cargoes on the forklift, so that safety early warning is automatically carried out when pedestrians enter the safety distance, the safety of the forklift in the driving process is higher, and casualties caused by poor sight of drivers are reduced.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

a forklift pedestrian safety alarm system comprises infrared ranging sensors respectively arranged on the front side and the rear side of a forklift and a cargo height measuring device arranged on a forklift portal; the system also comprises a processor and an alarm device, wherein the processor is connected with the infrared ranging sensor, the cargo height measuring device and the alarm device.

Further, the infrared ranging sensor installed on the fork of the forklift is a first infrared ranging sensor, and the infrared ranging sensor installed on the rear side of the forklift is a second infrared ranging sensor.

Further, a scale is arranged on the portal frame, the cargo height measuring device is located on the scale, and a scale value is arranged on one surface, close to the driver seat, of the scale.

Further, the height measuring device comprises a sliding block which is arranged on the scale in a sliding manner and slides up and down along the scale value direction of the scale and a displacement sensor which is arranged on the sliding block, and the sliding block is connected with a driving mechanism.

Further, the driving mechanism comprises a motor fixedly arranged at the upper end of the scale, and a rotating shaft of the motor is connected with the sliding block below through a connecting chain.

Further, sliding grooves are formed in two sides of the scale, the sliding blocks and the scale are the same in width, and pulleys are arranged at two ends of the sliding blocks and located in the sliding grooves.

Further, a control button is arranged on the side face of the driver seat, and the control button is connected with the processor.

Further, the alarm device comprises an audible and visual alarm arranged beside the driver seat.

The utility model has the following advantages and beneficial effects:

the loading height of the current goods is measured through the goods height measuring device on the forklift, and then the safety warning distance of the forklift is adjusted, when pedestrians enter the safety distance, safety early warning is automatically carried out, the safety of the forklift in the running process is higher, and casualties caused by poor sight of drivers are reduced.

Drawings

Fig. 1 is a schematic diagram of installation positions of devices of a forklift pedestrian safety alarm system provided by the utility model;

fig. 2 is a schematic structural diagram of a scale and a cargo height measuring device of a forklift pedestrian safety alarm system provided by the utility model;

icon: 1-first infrared ranging sensor, 2-second infrared ranging sensor, 3-scale, 31-motor, 32-link, 33-slider, 4-control button, 5-alarm device.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

As shown in fig. 1 and 2, a pedestrian safety warning system for a forklift truck includes infrared ranging sensors respectively installed on front and rear sides of the forklift truck and a cargo height measuring device disposed on a forklift truck frame, wherein the infrared ranging sensors installed on the forklift truck fork are first infrared ranging sensors 1, which monitor front conditions of the forklift truck, and the infrared ranging sensors installed on a rear-side truck body of the forklift truck are second infrared ranging sensors 2, which monitor rear conditions of the forklift truck.

The system further comprises a processor and an alarm device 5, wherein the processor is connected with the infrared ranging sensor, the cargo height measuring device and the alarm device 5.

The power supply in the system is connected with the power supply of the forklift, when the forklift is started to move forwards, the system is started, the first infrared ranging sensor 1 monitors whether organisms exist in front, after pedestrians are monitored, the distance value between the forklift and the monitored pedestrians is returned to the processor, the processor compares the monitored distance value with the safety distance in the system, and if the monitored distance value is smaller than or equal to the safety distance, the processor controls the alarm device 5 to start alarming.

The initial value of the safety distance of the system can be set by oneself, in this embodiment, taking 1.6 meters as an example, the scale 3 is positioned on the forklift mast, and the distance between the lowest ground surfaces of the scale 3 is 1.6 meters. When the height of the goods is below 1.6 meters, the safety distance of the system is 1.6 meters, and when the distance between pedestrians and the forklift is less than or equal to 1.6 meters, the system gives an alarm; when the height of the cargo increases to above 1.6 meters, the cargo height measuring device measures the height of the cargo and feeds back the measured value to the processor, which adjusts the new safe distance of the augmentation system. The specific structure of the cargo height measuring device is as follows.

Be equipped with scale 3 on the portal, goods height measurement device is located on the scale 3, just the one side that scale 3 is close to the driver's seat is equipped with the scale value, the scale value is used for making things convenient for the driver oneself to sense the present goods place height, height measurement device is including sliding the setting and being in on the scale 3 and follow the slider 33 of scale 3 scale value direction gliding from top to bottom and be located displacement sensor on the slider 33, slider 33 is connected with actuating mechanism. The driving mechanism comprises a motor 31 fixedly arranged at the upper end of the scale 3, and a rotating shaft of the motor 31 is connected with a lower sliding block 33 through a connecting chain 32. The side of the driver seat is provided with a control button 4, the control button 4 is connected with the processor, and the control button 4 comprises an ascending control button 4 and a descending control button 4.

When the height of the goods is higher than 1.6 meters, a driver presses the ascending control button 4, the processor receives signals of the buttons and then controls the rotating shaft of the motor 31 to rotate, so that the connecting chain 32 drives the sliding block 33 to slide upwards, when the sliding block 33 slides to be at the same height as the goods, the control button 4 is loosened, the motor 31 stops rotating, the displacement sensor on the sliding block 33 feeds back displacement information to the processor, and after receiving the displacement information, the processor modifies the safe distance value of the system to be 1.9+X meters, and X is the displacement of the sliding block 33. After unloading, a driver can press the descending control button 4 to control the descending control button to slide to the lowest position of the scale 3, and after receiving the information of the descending control button 4, the processor adjusts the safety distance of the system to be 1.6 meters and continuously monitors the conditions around the forklift.

The second infrared ranging sensor 2 that the rear end of fork truck was equipped with is used for monitoring the circumstances behind the fork truck when reversing, bumps into the pedestrian behind the car when avoiding reversing, and the monitoring information of two infrared ranging sensors of processing is received simultaneously to the treater. The safety distance values before and after the forklift may be inconsistent, the safety distance value after the forklift may be fixed 1.6 meters, and only the safety distance before the forklift is adjusted.

The two sides of the scale 3 are provided with sliding grooves, the sliding blocks 33 and the scale 3 are the same in width, and pulleys are arranged at two ends of the sliding blocks 33 and located in the sliding grooves. Opposite sliding grooves are formed in two ends of the scale 3, the sliding blocks 33 slide between the sliding grooves, so that sliding is smoother, and sliding positions and sliding directions of the sliding blocks 33 are limited, so that random shaking of the sliding blocks 33 is avoided.

The alarm device 5 is an audible and visual alarm and is arranged at the side door of the driver, so that the outside pedestrian can be reminded by sound, and the driver can be reminded by flashing and sound. The processor may be a single-chip microcomputer with any data processing function, and in this embodiment, a DSP single-chip microcomputer may be used.

The working principle of the utility model is as follows: the infrared ranging sensor is used for monitoring pedestrians in front of the forklift and returning the distance value between the pedestrians and the forklift to the processor, the processor compares the distance value with the safety distance of the system, and the alarm device 5 is started after the distance value is smaller than or equal to the safety distance; the system is provided with a cargo height measuring device for measuring the loading height of cargoes, and when the cargo height is larger than an initial value, the new cargo height is used as a new forklift safety distance.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The forklift pedestrian safety alarm system is characterized by comprising infrared ranging sensors respectively arranged at the front side and the rear side of a forklift and a cargo height measuring device arranged on a forklift gantry;

the system also comprises a processor and an alarm device (5), wherein the processor is connected with the infrared ranging sensor, the cargo height measuring device and the alarm device (5).

2. The forklift pedestrian safety alarm system of claim 1, wherein: the infrared ranging sensor arranged on the fork of the forklift is a first infrared ranging sensor (1), and the infrared ranging sensor arranged on the rear side of the forklift is a second infrared ranging sensor (2).

3. The forklift pedestrian safety alarm system of claim 1, wherein: be equipped with scale (3) on the portal, goods height measurement device is located on scale (3), just the one side that scale (3) is close to the driver's seat is equipped with the scale value.

4. A forklift pedestrian safety warning system according to claim 3, characterized in that: the height measuring device comprises a sliding block (33) which is arranged on the scale (3) in a sliding manner and slides up and down along the scale value direction of the scale (3) and a displacement sensor which is positioned on the sliding block (33), and the sliding block (33) is connected with a driving mechanism.

5. The forklift pedestrian safety alarm system of claim 4, wherein: the driving mechanism comprises a motor (31) fixedly arranged at the upper end of the scale (3), and a rotating shaft of the motor (31) is connected with the sliding block (33) below through a connecting chain (32).

6. The forklift pedestrian safety alarm system of claim 5, wherein: the two sides of the scale (3) are provided with sliding grooves, the sliding blocks (33) and the scale (3) are the same in width, and pulleys are arranged at two ends of the sliding blocks (33) and located in the sliding grooves.

7. The forklift pedestrian safety alarm system of claim 1, wherein: the side of the driver's seat of the forklift is provided with a control button (4), and the control button (4) is connected with the processor.

8. The forklift pedestrian safety alarm system of claim 1, wherein: the alarm device (5) comprises an audible and visual alarm arranged beside the driver seat.