KR102104648B1 - safety apparatus for work of heavy machinery - Google Patents

Abstract

The present invention relates to a work safety device for heavy equipment, and more specifically, to detect the worker or pedestrian approaching the heavy equipment when working with heavy equipment such as forklifts, excavators, dump trucks, payloaders, cranes, etc. It relates to a safety device that can protect a worker or a pedestrian by sending a signal.
The work safety device of the heavy equipment of the present invention includes a region display unit for visually expressing a working area by irradiating a laser around the heavy equipment when the heavy equipment is in operation, a sensing unit for detecting a detection target approaching the work area, and a heavy equipment. It has a warning unit for outputting a warning signal to the driver, and a control unit for controlling the operation of the warning unit by a detection signal output from the sensing unit when sensing the detection target through the sensing unit.

Description

Safety apparatus for work of heavy machinery

The present invention relates to a work safety device for heavy equipment, and more specifically, to detect a worker or pedestrian approaching the heavy equipment when working with heavy equipment such as a forklift, excavator, dump truck, payloader, crane, etc. It relates to a safety device that can protect a worker or a pedestrian by sending a signal.

Generally, heavy noise occurs at the work site where heavy equipment such as forklifts, excavators, dump trucks, payloaders, cranes, etc. are operated, so the operator of the heavy equipment can work without detecting other workers or pedestrians working around the heavy equipment. There are many cases, and accordingly, safety accidents frequently occur in which workers or pedestrians are injured by heavy equipment.

As an example, an excavator or a mobile crane has a structure capable of rotating 360 degrees, so if an excavator or crane suddenly rotates while another worker is working within the working radius of the excavator or mobile crane, this causes the operator to move the excavator or crane. Situations that can result in injuries can result.

As heavy equipment operators only rely on the rear mirror attached to the front to observe the rear, blind spots are generated on the rear and side surfaces of heavy equipment, so other workers are in the blind spot and rotate the heavy equipment without the driver's knowledge. If there is a situation in which the vehicle is moved or moved, a safety accident occurs because the worker in the blind spot cannot avoid it.

In order to solve this problem, a method of installing the camera on the rear side has been proposed, but since the camera can only move up and down or left and right, there is a limit to providing a driver with a monitor by photographing a blind spot completely.

In addition, workers or pedestrians passing near heavy equipment in operation have difficulty in avoiding danger by themselves because they cannot grasp the working area of mobile heavy equipment at all.

Republic of Korea Patent Publication No. 10-2011-0121971 discloses a working radius display device and a display method of construction equipment.

The disclosed patent is installed on the construction equipment to generate a laser beam generator that displays the working radius of the construction equipment on the ground, a power supply unit that supplies power to the beam generator, and controls the power supply unit to generate a beam generator when the construction equipment is ON It includes a control unit to supply power to the power supply and to cut off the power supplied to the beam generator when the construction equipment is turned off.

The disclosed patent can warn workers or pedestrians passing through the construction site from entering the working radius by visually displaying the working radius in the form of concentric circles on the ground, and also avoiding the working radius of construction equipment that is visually confirmed by the worker or pedestrian. It has the advantage of being able to move and prevent safety accidents.

However, there is a problem in that a dangerous situation cannot be recognized by a driver or a manager driving heavy equipment.

Republic of Korea Patent Publication No. 10-2011-0121971: Construction equipment working radius display device and display method

The present invention was created to improve the above problems, and detects workers or pedestrians approaching around heavy equipment when working with heavy equipment such as forklifts, excavators, dump trucks, payloaders, cranes, etc., and sends warning signals to drivers of heavy equipment. The aim is to provide a safety device that can protect workers or pedestrians around heavy equipment.

The work safety device of the heavy equipment of the present invention for achieving the above object includes an area display unit for visually expressing a working area by irradiating a laser around the heavy equipment when the heavy equipment is operated; A sensing unit for sensing a sensing target approaching the work area; A warning unit which outputs a warning signal to the driver of the heavy equipment; And a control unit controlling an operation of the warning unit by a detection signal output from the sensing unit when sensing the sensing target through the sensing unit.

And a danger notification unit outputting a danger signal to the detection target by the control unit when the sensing signal is output from the sensing unit.

It further comprises an emergency stop means for stopping the operation of the heavy equipment by the control unit when the sensing signal of the sensing unit is output.

The warning unit is a vibration unit that applies vibration to the driver.

The vibration unit is installed in the seat or backrest of the chair in which the driver sits to vibrate the seat or the backrest.

The vibration unit is installed on a helmet worn by the driver to vibrate the helmet, and the vibration unit is mounted on the helmet and has an entrance hole formed on the front surface, a fixed shaft installed inside the case, and the fixed shaft It is rotatably coupled to the swing bar on one side to enter and exit the inside and outside of the case through the access hole, a hitting part formed on the top of the swing bar to strike the helmet, and installed inside the case An elastic member for applying an elastic force to the swing bar, a motor installed inside the case, and a semicircular shape that is eccentrically coupled to the drive shaft of the motor and rotates the swing bar forward and backward while being repeatedly contacted and separated from the lower portion of the swing bar. It is provided with an eccentric member.

As described above, the present invention visually displays the working area of the heavy equipment around the heavy equipment, so that the worker or the pedestrian himself can move away from the working region of the heavy equipment.

In addition, the present invention not only recognizes the working area of the heavy equipment, but also can send a warning signal to the driver of the heavy equipment when the worker or pedestrian approaches, and can also send a danger signal to the operator or the pedestrian in advance to prevent safety accidents. You can.

1 is a perspective view schematically showing a state installed on an excavator and displaying a work area around the excavator according to an example of the present invention,
Figure 2 is a block diagram showing the configuration of the work safety device of the heavy equipment of the present invention applied to Figure 1,
3 is a perspective view showing a state in which a warning unit which is an essential part of the present invention is installed on a chair,
5 is a side view showing a state in which a warning part which is an essential part of the present invention is installed on a helmet,
6 and 7 are cross-sectional views showing the operation of the warning unit applied to FIG. 5.

Hereinafter, a working safety device for heavy equipment according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, the work safety device of the heavy equipment of the present invention is a region display unit 20 and a work area 5 for visually expressing the work area 5 by irradiating a laser around the heavy machinery 1 ), A sensing unit 10 for detecting a sensing target approaching, a warning unit 40 for outputting a warning signal to a driver of heavy equipment 1, and a warning when detecting a sensing target through the sensing unit 10 A control unit 15 for controlling the operation of the unit 40 is provided.

The area display unit 20 may be installed on the heavy equipment 1. The heavy equipment 1 is used in various industrial sites such as construction, civil engineering, logistics, transportation, such as forklifts, excavators, dump trucks, payloaders, and cranes. In the illustrated example, an example of the heavy equipment 1 is shown.

The area display unit 20 visually expresses the working area 5 by irradiating a laser around the heavy machinery 1 when the heavy machinery 1 is operated.

For example, a work area 5 of a certain size may be set on the ground centering on the heavy equipment 1, and a laser beam may be irradiated to the edge of the work area 5 to display the work area 5 as a line. Therefore, it is possible to visually show the work area 5 of the heavy equipment 1 to pedestrians or nearby workers.

The area display unit 20 may be formed of a plurality of beam generators that generate a laser beam. A large number of beam generators are installed in the heavy equipment, and configured to fire a laser beam on the ground in a 360-degree direction. When the work area 5 is displayed on the ground by the laser beam irradiated from the beam generator, a worker or a pedestrian can visually check the work area 5 of the heavy equipment 1 to prevent a safety accident.

The sensing unit 10 detects a detection target approaching the work area 5 and outputs a detection signal to the control unit 15. Here, the detection target is an object for protecting from the heavy equipment 1, and may be an operator working around the heavy equipment 1 or a pedestrian passing around the heavy equipment. In addition, the detection target may be a vehicle passing through the heavy equipment or other heavy equipment.

The sensing unit 10 may use various types of sensors as long as it is a structure capable of detecting a sensing target approaching the work area 5. For example, a conventional infrared sensor may be used as the sensing unit 10. Infrared sensors are installed on the front, rear, left and right sides of the heavy equipment 1 to detect the detection target approaching the work area 5.

When the sensing unit 10 detects a sensing target approaching the work area 5, the control unit 15 controls the operation of the warning unit 40 by a detection signal output from the sensing unit 10.

When a sensing signal is output from the sensing unit 10, the control unit 15 transmits an operation signal to the reception unit 35 through the transmission unit 30.

The control unit 15 may be formed of a conventional micro process, various driving circuits, and the like. A micro controller unit (MCU) can be used as the control unit. The MCU can convert analog signals into digital signals, control peripheral devices connected to the MCU, and store signals generated over time. It is also suitable for miniaturization due to its small volume.

The transmitter 30 transmits a signal transmitted from the controller 15 to the receiver 35 through a communication network. The method of transmitting a signal from the transmitter 30 to the receiver 35 is preferably a short-range wireless method with low power consumption. The wireless communication method may be any one of Zigbee, Bluetooth, RF-module, and UWB NFC (Ultra Wide Band Near Field Communication).

The reception unit 35 receives a signal transmitted from the transmission unit 30. When the receiving unit 35 receives a signal, the warning unit 40 operates.

The warning unit 40 outputs a warning signal to the driver of the heavy equipment 1 when a signal is received through the receiving unit 35.

As an example of the warning unit 40, a vibration unit 50 that applies vibration to the driver may be used. A conventional vibration motor can be used as the vibration unit 50.

The vibration unit 50 may be installed on the chair 6 on which the driver sits. For example, a plurality of vibration units 50 may be built in the seat 7 or the back 8 of the chair 6. The vibration unit 50 installed on the chair 6 vibrates the seat portion or the backrest portion under the control of the control unit 15. Therefore, despite the ambient noise, the driver of the heavy equipment 1 can immediately recognize the hazards in the work area 5.

In addition, the vibration unit may be installed on the helmet worn by the driver. In this case, the vibration unit may be mounted inside or outside the helmet using a separate fixing tool. The vibration unit vibrates the helmet under the control of the control unit so that the driver can immediately recognize the hazard.

In addition, the vibrating unit may be installed on a hard hat worn by workers around heavy equipment. For example, when a pedestrian approaches the work area, the sensing unit senses it, and by the sensing signal of the sensing unit, the control unit transmits a radio signal to vibrate the vibration unit installed in the worker's helmet. Accordingly, at least one or more workers who work around heavy equipment can immediately recognize the danger situation and deny pedestrian access or warn pedestrians of danger.

Meanwhile, the present invention may further include a danger notification unit.

The danger notification unit outputs a danger signal to the detection target. For example, when a pedestrian approaches the work area, the sensing unit senses it, and according to the sensing signal of the sensing unit, the control unit transmits a radio signal to operate the danger notification unit.

The danger notification unit can inform the detection target of various dangers. For example, the signal may be sound, light, or vibration. An example of the danger notification unit may be a speaker. In addition, another example of the danger notification unit may be a warning light.

The hazard notification unit can be installed on heavy equipment or outside the work area.

Helps pedestrians or workers to avoid the work area by recognizing the danger to pedestrians or workers approaching the work area through the danger notification.

On the other hand, the present invention may further include an emergency stop means for stopping the operation of the heavy equipment by the control unit when the sensing signal output of the sensing unit.

A power breaker can be used as an emergency stop. The power circuit breaker can stop the heavy equipment by cutting off the main power of the battery that supplies power to the heavy equipment.

Meanwhile, another example of the vibration unit applied to the present invention is illustrated in FIGS. 4 to 6.

4 to 6, the vibration unit 60 is installed on the hard hat 9 worn by the driver of the heavy equipment. The vibration unit 60 vibrates by tapping the helmet 9. Therefore, it is possible to send a warning signal to the wearer of the helmet 9 by vibration and sound, which is more effective than simply applying vibration.

The illustrated vibration unit 60 is coupled to the case 61 mounted to the helmet 9, the fixed shaft 65 installed inside the case 61, and the fixed shaft 65 so as to be rotatable and one side of the case The swing bar 67 that can go inside and outside of the 61, the hitting portion 69 formed on the upper portion of the swing bar 67 to strike the hard hat 9, and installed inside the case 61 The swing member 67 is eccentrically coupled to the elastic member 81 that applies elastic force to the swing bar 67, the motor 71 installed inside the case 61, and the drive shaft 73 of the motor 71. It is provided with an eccentric member 75 of a semi-circular shape to rotate and swing the swing bar 67 in the front-rear direction while being repeatedly contacted and separated at the lower portion.

The case 61 is mounted on the outside of the helmet 9. Although not shown, the case 61 can be fixed to the hard hat 9 using a separate fixing tool. In addition, it is of course possible to secure the case 61 to the outside of the hard hat 9 using double-sided tape.

The case 61 is made of a hollow cylinder shape. An entrance hole 63 is provided on the front surface of the case 61 to allow the hitting portion 69 to enter and exit. The front surface of the case 61 provided with the entrance hole 63 is in contact with the outer surface of the hard hat 9. Therefore, it is preferable that the front surface of the case 61 is formed in a shape corresponding to the portion contacting the hard hat 9.

The fixed shaft 65 is installed inside the case 61. Both ends of the fixing shaft 65 are fixed to both left and right sides of the case 61, respectively.

The swing bar 67 is rotatably coupled to the fixed shaft 65. The upper portion of the swing bar 67 can go in and out of the case 61 through the entrance hole 63.

Strike portion 69 is formed on the upper portion of the swing bar (67). The striking portion 69 is formed to protrude convexly to the front of the swing bar 67. The striking portion 69 hits the hard hat 9 when the swing bar 67 rotates in the front-rear direction to generate vibration and sound.

The elastic member 81 exerts an elastic force on the swing bar 67. A torsion spring can be used as the elastic member 81. One end of the torsion spring is supported by a fixing protrusion 83 formed on the inner surface of the case 61, and the other end is fitted into a fixing groove formed in the swing bar 67 and supported by the swing bar 67. The torsion spring serves to push the hitting portion 69 in the direction of the access hole 63 by applying elastic force to the upper portion of the swing bar 67.

The motor 71 is installed inside the case 61. Although not shown, the motor 71 is electrically connected to a battery installed inside the case 61.

The eccentric member 75 is coupled to the drive shaft 73 of the motor 71. The eccentric member 75 is formed in a semicircle shape as shown. The drive shaft 73 of the motor 71 is coupled to a position biased to one side away from the center of the eccentric member 75. Therefore, when the motor 71 is operated, the eccentric member 75 rotates while being repeatedly contacted and separated from the lower portion of the swing bar 67.

When the eccentric member 75 rotates counterclockwise, as shown in Figure 5, the eccentric member 75 contacts the lower portion of the swing bar 67 and pushes the lower portion of the swing bar 67 toward the front of the case 61 The upper portion of the swing bar 67 moves in the rear direction of the case.

And when the eccentric member 75 is further rotated and the eccentric member 75 is separated from the lower portion of the swing bar 67 as shown in FIG. 6, the upper portion of the swing bar 67 is moved toward the front of the case by the elastic member 67. do. Accordingly, the striking part goes out of the entrance hall and strikes the helmet.

When the eccentric member 75 is rotated as described above, while the operations as shown in FIGS. 5 and 6 are repeated, the swing bar 67 repeats rotation in the front-rear direction, and accordingly, the swing bar 67 centers on the fixed shaft 65. While swinging, hit the helmet at regular intervals. Through the hitting of the hard hat, it vibrates the hard hat and generates sound. Therefore, a warning signal can be sent to the driver by vibration and sound, so that the driver can easily recognize the dangerous situation in any environment.

As described above, the present invention has been described with reference to one embodiment, but this is only exemplary, and those skilled in the art will understand that various modifications and equivalent embodiments are possible therefrom. Therefore, the true protection scope of the present invention should be defined only by the appended claims.

1: Heavy equipment 5: Work area
10: sensing unit 15: control unit
20: area display unit 30: transmission unit
35: receiver 40: warning

Claims (6)

An area display unit for visually expressing a work area by irradiating a laser around the heavy machinery when the heavy machinery is operated;
A sensing unit for sensing a sensing target approaching the work area;
A warning unit which outputs a warning signal to the driver of the heavy equipment;
When the sensing target is detected through the sensing unit, a control unit for controlling the operation of the warning unit by a detection signal output from the sensing unit;
The warning unit is a vibration unit that applies vibration to the driver,
The vibration unit is installed on the helmet worn by the driver to vibrate the helmet,
The vibrating unit is mounted on the helmet and has a case where an access hole is formed on the front surface, a fixed shaft installed inside the case, and rotatably coupled to the fixed shaft, one side of which is inside and outside the case through the access hole. A swing bar that can enter and exit, a striking portion formed on an upper portion of the swing bar to strike the helmet, an elastic member installed inside the case to apply elastic force to the swing bar, and a motor installed inside the case, It is eccentrically coupled to the drive shaft of the motor, while repeatedly contacting and separating from the lower portion of the swing bar, a work safety device for heavy equipment, characterized in that it comprises a semicircular eccentric member for rotating the swing bar in the front-rear direction. The safety device of claim 1, further comprising a danger notification unit configured to output a danger signal to the detection target by the control unit when outputting a detection signal from the sensing unit. The safety device of claim 1, further comprising an emergency stop means for stopping the operation of the heavy equipment by the control unit when a sensing signal is output from the sensing unit. delete delete delete

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