KR20210031064A - Intelligent lifting apparatus - Google Patents

Abstract

According to the present invention, a human body sensing sensor is mounted on a lifting switch controlling a winding machine to be safely used with operation by a worker, and moreover, precise and stable sensing as well as intelligent proportion control in a low-vibration state can be enabled through a Hall sensor. In particular, since the present invention uses an hourglass worm decelerator as a decelerator used for a winding machine, miniaturization can be possible because there is no need to prepare a separate braking means due to a self-locking function, and the present invention can perform precise control with a zero backlash as well as increase efficiency and lifespan while vibrations, noise and heat emission. Moreover, the present invention uses a BLDC motor as a motor used for the winding machine, miniaturization as well as weight-lightening can be possible, and moreover, an inductive sensor is used to precisely and stably monitor a motor′s state.

Description

Intelligent lifting device{INTELLIGENT LIFTING APPARATUS}

The present invention relates to an intelligent lift device, and more specifically, a lifting switch is operated only when an operator operates through a human body detection sensor, thereby increasing safety, and intelligently proportional to a low vibration state with precise and stable sensing through a hall sensor. I made it possible to control it. In addition, self-locking and miniaturization are possible using a long worm reducer as a reducer, and a BLDC motor is used as a motor, so that it is possible to reduce the size and weight.

In general, lifts are used in industrial or manufacturing sites to lift and assemble heavy objects or for moving and transporting. Hoist cranes that are manufactured and supplied inexpensively are mainly used as such lifts, but since the hoist crane method is controlled by the ON/OFF method, severe vibration occurs during lifting operation and precise position control is difficult. There is a limit to use at the manufacturing site. In addition, in the hoist crane, an operator works near the hoist and the weight of a heavy object is not known, so an overload may occur while controlling the hoist crane, resulting in a sudden stop or an accident that the heavy object falls.

As one method for solving this problem, an intelligent lifting device such as (Patent Document 1) and (Patent Document 2) below is used.

(Patent Document 1) Korean Patent Registration No. 10-1851782

A magnetic lift system using an intelligent magnetic lift, comprising: a system communication unit that communicates with the intelligent magnetic lift; a power supply unit that supplies magnetic driving power to the intelligent magnetic lift in a wired or wireless manner; A lift transfer unit for upward or parallel transfer of the magnetic lift, and a wired/wireless method of remotely controlling the magnetic drive and transfer of at least one of the intelligent magnetic lifts through the system communication unit, and safety when transporting a target object using the intelligent magnetic lift In order to prevent the occurrence of an accident, a system controller configured to set the number and arrangement of the at least one intelligent magnetic lift connected to the beam according to the shape and weight of the target object.

(Patent Document 2) Korean Patent Registration No. 10-1857477

It relates to an intelligent magnetic lift, comprising: a magnetic driving unit that adsorbs a target object for transport by magnetic force, a sensor unit that is built into the intelligent magnetic lift and detects a dangerous situation occurring in the surroundings, and the state of the intelligent magnetic lift or detected in the surroundings. An alarm that notifies a dangerous situation by light or sound, another intelligent magnetic lift, or a lift communication unit that communicates with a magnetic lift system, a manual driving unit that controls the magnetic driving unit on and off by a user in a manual manner, and the sensor And a lift control unit that detects a dangerous situation through the unit and controls the magnetic driving unit and the lift communication unit in response to the detected dangerous situation to cope with the dangerous situation.

However, such a conventional intelligent lifting device has the following problems.

(1) Since the spur gear is used for lifting and lowering heavy objects, this spur gear system does not have a self-locking function, and a disc brake is required for braking action.

(2) In particular, disc brakes use an electromagnet to perform braking action, and their durability is within one year, and disc brakes are consumables and require periodic maintenance.

(3) Nevertheless, not only increases the cost of periodic maintenance, but also can lead to accidents due to the fall of heavy objects due to the decrease in durability.

(4) Since a three-phase AC servo motor is used as a motor that actually winds up a wire or chain, it is not only expensive, but is also disadvantageous in maintenance because most of the imported products are used.

(5) In particular, since most of the existing intelligent lifting devices are imported and used, or major parts are imported and used, not only the purchase price is high, but also the maintenance cost is high.

Korean Patent Registration No. 10-1851782 (Registration date: 2018.04.18) Korean Patent Registration No. 10-1857477 (Registration Date: 2018.05.08)

The present invention is in consideration of this point, and by mounting a human body detection sensor on the lifting switch that controls the hoisting machine, it can be safely used by the operator's operation, as well as intelligently proportional control in a low-vibration state with precise and stable sensing through a Hall sensor. Its purpose is to provide an intelligent lift device that makes it possible to do so.

In particular, since the present invention uses a long worm reducer for the reducer used in the hoisting machine, it has a self-locking function, so it can be miniaturized without having to have a separate braking means, and it is possible to precisely control with zero backlash, as well as And there is another purpose to provide an intelligent lift device capable of increasing efficiency and life while reducing heat generation.

In addition, the present invention uses a BLDC motor as the motor used for the hoisting machine, so that it is compact and lightweight, and provides an intelligent lift device capable of accurately and stably monitoring the motor condition using an inductive sensor. Has another purpose.

The intelligent lift device according to the present invention for achieving this object includes a traction machine 100 including a reducer 110 and a motor 120; A wire 200 connected to the hoisting machine 100 to expand and contract the length; A lifting switch 300 connected to the wire 200; And a hook 400 connected to the lifting switch 300; but, the lifting switch 300 includes: a main body 310; A load cell 320 mounted inside the main body 310 and connected to the wire 200 on one side; A tension rod 330 connected to one side to the load cell 320 and the other to a hook 400 and supported by springs 331 fixed to the main body 310 on both sides; A hall sensor 340 mounted on the tension rod 330 to detect a position in which the body 310 is elastically supported by the spring 331 and moves in the longitudinal direction of the tension rod 330; A human body detection sensor 350 mounted on the body 310 or the tension rod 330 to detect a body in contact with the body 310; And a controller 360 for controlling the overall lifting switch 300.

In particular, the reducer 110 is characterized in that it is a long worm reducer with a self-locking function.

In addition, the motor 120 is characterized in that the BLDC motor. At this time, the BLDC motor is characterized in that the BLDC motor status is monitored by an inductive sensor.

Finally, the controller 360 is configured to perform the following operation, but (1) when an impact or pressure is applied to the main body 310, when it is determined that it is a human body through the human body detection sensor 350, the lift is operated, (2) When the body 310 is stretched and contracted in the longitudinal direction using the human body, the stretched distance is detected by the hall sensor 340, and the hook 400 is moved up and down through the hoisting machine 100 in proportion to the detected distance. And (3) receiving the weight of the heavy object mounted on the hook 400, and calculating the lifting and moving speed, and controlling it to move precisely.

The intelligent lift device according to the present invention has the following effects.

(1) Using the human body detection function, it is configured to operate only when the operator manipulates the lifting switch, so you can work safely. In particular, it is possible to establish a safe working environment by preventing a malfunction or the like from occurring even if surrounding objects or the like collide with the lifting switch.

(2) Since the Hall sensor is configured to detect that the operator pulls the lifting switch, the lift can be intelligently controlled through proportional control.

(3) Since a long worm reducer is used as a reducer, it has a sulf locking function, so there is no need to configure a separate braking device, so it can be used more safely and conveniently.

(4) In addition, since the long worm reducer does not have to be equipped with a braking device as described above, it can not only be manufactured in a small size, but also can increase safety by preventing cargo from falling.

(5) In addition, the long worm reducer is compact and capable of producing high torque and precise control with zero backrush, low vibration, noise, and heat generation, as well as high efficiency and long service life.

(6) On the other hand, since the BLDC motor is used as a motor that actually winds or unwinds the wire, it can be manufactured in a small size and inexpensively.

(7) In particular, since the BLDC motor is equipped with an inductive sensor to monitor the motor condition, it is not only resistant to vibration and noise, but also can sense precisely and stably, enabling precise control.

[Fig. 1] is an image perspective view showing the overall configuration of an intelligent lifting device manufactured according to the present invention.
[Fig. 2] is a block diagram showing the internal structure of a hoisting machine in an intelligent lifting device manufactured according to the present invention.
[Fig. 3] is an image perspective view showing the internal configuration of a lifting switch used when controlling the hoisting machine according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventor should appropriately define the concept of terms in order to describe his own invention in the best way It should be interpreted as a meaning and concept consistent with the technical idea of the present invention according to the principle that it can be.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent all the technical spirit of the present invention, and various equivalents that can replace them at the time of the present application And it should be understood that there may be variations.

[Configuration]

The intelligent lift device according to the present invention includes a hoisting machine 100, a wire 200, a lifting switch 300, and a hook 400, as shown in [Fig. 1] to [Fig. 3].

In particular, the lifting switch 300 is configured to be equipped with a Hall sensor 340 so as to detect the operating force applied to the lifting switch 300, it is possible to quickly and precisely proportional control.

In addition, since the lifting switch 300 is configured by adding a human body detection sensor 350, even if a nearby object hits the lifting switch 300 and gives an impact, it is determined that it is not the operator's operation, so that the heavy object is intelligently controlled. It was possible to manage it.

On the other hand, since the reducer 110 configured in the hoisting machine 100 uses a long worm reducer with a self-locking function, it can be safely used without having a separate braking means, and can be manufactured and used in a small and inexpensive manner. I did it.

In addition, since the motor 120 configured in the hoisting machine 100 uses a BLDC motor, it is inexpensive and can be miniaturized, and because it is configured to monitor the motor with an inductive sensor, it is not only resistant to vibration and noise, but also can sense precisely and stably. I made it possible.

Hereinafter, this configuration will be described in more detail with reference to the accompanying drawings.

end. whim

The hoisting machine 100, as in [Fig. 1] and [Fig. 2], winds up or unwinds a wire to be described later, and attaches it to the end thereof, so that a hook 400 hanging on a heavy object to be worked can be wound up.

To this end, the hoisting machine 100 includes a speed reducer 110 and a motor 120 as shown in FIG. 2.

1. Reducer

The reducer 110 is connected to a motor 120 to be described later, as shown in FIG. 2, and receives the driving force of the motor 120 to reduce the speed to an appropriate speed. At this time, the reducer 110 transmits the driving force of the motor 120 to the drum 210 winding the wire 200, which will be described later, so that the wire 200 is wound or unwound on the drum 210 to lift or lower the heavy object. To be.

In a preferred embodiment of the present invention, the reducer 110 is preferably a long worm reducer, especially a long worm reducer having a self-locking function. This is because a long worm reducer can be manufactured in a small and inexpensive manner, and safety can be improved through a braking effect without having a separate braking means. In addition, such a long worm reducer is capable of manufacturing a reducer with high torque while being small in size, and is suitable for precision control with zero back rush, and has twice the efficiency compared to general worm gears, resulting in low vibration, low noise, and low noise. This is because heat generation, high efficiency, and extended life are possible.

2. Motor

As shown in FIG. 2, the motor 120 transmits the rotational force generated while rotating in the forward and reverse direction under the control of a controller 360 to be described later to the drum 210 through the above-described reducer 110, and the wire 200 The drum 210 is wound or unwound.

In a preferred embodiment of the present invention, the motor 120 is preferably a BLDC motor. Since the BLDC motor uses a split core, it is possible to reduce size and weight (10 to 20% compared to the conventional motor), and it is possible to minimize the caulking phenomenon that occurs in the existing motor. In particular, since the BLDC motor is configured to monitor the state of the BLDC motor with an inductive sensor, it is possible to accurately and stably monitor the state of the BLDC motor. In addition, since the inductive sensor is not only resistant to vibration and noise, but also does not use a magnetic, it is possible to more accurately and stably sense the monitoring state.

In addition, the BLDC motor is capable of high efficiency and miniaturization, a high torque at a low speed, a constant speed torque operation twice that of an AC motor, and can be used at a low speed with a low reduction ratio and no speed reduction.

I. wire

Wire 200, as shown in [Fig. 1] and [Fig. 2], one side is wound around the drum 210 provided in the above-described hoisting machine 100, and the other side is connected to a lifting switch 300 to be described later. The wire 200 is manufactured by a conventional technique used for a lifting device in the technical field to which the present invention belongs.

All. lifting switch

Lifting switch 300, as shown in [Fig. 1] to [Fig. 3], one side is connected to the wire 200 protruding from the aforementioned hoisting machine 100, and the other side is connected to a hook 400 to be described later. .

Particularly, the lifting switch 300 is proportional to the detection of the weight of a heavy object on the hook 400, control over the intelligent lift, and as the operator manipulates the lifting switch 300 by hand, as shown in FIG. 3 It is configured so that the lifting height can be automatically adjusted. To this end, the lifting switch 300 includes a body 310, a load cell 320, a tensile rod 330, a hall sensor 340, a human body sensor 350, and a controller 360.

1. Main body

The main body 310 forms the outer shape of the lifting switch 300 as shown in FIG. 3. In particular, the main body 310 constitutes a space in which other components to be described later can be mounted, and assembly and disassembly can be easily performed, and an operator can easily hold the lifting switch 300 with one hand and move it up or down. It is desirable to configure it to work.

2. Load Cell

The load cell 320 is mounted inside the main body 310, as shown in FIG. 3, and one side is connected to the wire 200 described above. And the other side is attached to the tensile rod 330 to be described later. When the load cell 320 hangs a heavy object on the hook 400 mounted at the end of the tension rod 330, the wire 200 and the hook 400 are pulled based on the load cell 320 to detect the load of the heavy object. Use the one produced by the usual techniques that can be.

3. Tensile rod

The tensile rod 330 is mounted on the main body 310 so as to be movable back and forth along the length direction by receiving the elastic support of the springs 331 on both sides, respectively, as shown in FIG. 3. At this time, as the tension rod 330 is equipped with a load cell 320 to be described above on one side and a hook 400 to be described later on the other side, when a load is applied, one of the springs 331 is compressed and the load is removed. When the spring 331 that was compressed returns to its original position, the tension rod 330 is also brought back to its original position.

This tensile rod 330, as shown in Fig. 3, is configured to be supported by mounting another configuration to be described later, or to receive necessary power. In the drawings, reference numeral "332" denotes a ball planar used for power supply or the like from the outside.

4. Hall sensor

Hall sensor 340, as shown in [Fig. 3], is mounted on the above-described tensile rod 330 so that the operator can see how much has moved while holding the lifting switch 300. At this time, the Hall sensor 340 detects the distance the operator has moved by holding the lifting switch 300 and outputs the detection result to the controller 360 to be described later. It enables intelligent proportional control of how much to raise or lower).

This Hall sensor 340 is an electronic switch using a Hall effect, as shown in [Fig. 3], and when entering the void between the magnet 341 and the Hall semiconductor, the magnetic line of force is blocked, and when it is out of the void, the line of magnetic force is A sensor manufactured by a conventional technique is used that is manufactured to detect the moving distance by affecting the Hall semiconductor.

5. Human body detection sensor

As shown in FIG. 3, the human body detection sensor 350 is mounted on the body 310 or the tensile rod 330 described above to detect whether an object or an operator is in contact with the body 310. That is, since the lifting switch 300 is suspended from the hoisting machine 100, objects around the lifting switch 300 may bump into the lifting switch 300 from time to time. At this time, as the lifting switch 300 is pulled or vice versa, the hook 400 may descend downward or rise upward, leading to an accident.

Accordingly, the present invention operates the human body detection sensor 350 on the lifting switch 300 to detect a part of the body when the operator holds the body 310 so that the actual hook 400 can be controlled to descend or rise. By configuring, it is possible to prevent safety accidents in advance.

6. Controller

The controller 360, as shown in FIG. 3, is mounted in the body 310 and controls the following operations to be performed.

(1) When an impact or pressure is applied to the body 310, the lift is operated when it is determined that it is a human body through the human body detection sensor 350.

(2) When the body 310 is stretched and contracted in the longitudinal direction using the human body, the stretched distance is detected by the hall sensor 340, and the hook 400 is moved up and down through the hoisting machine 100 in proportion to the detected distance. Control to be transported.

(3) Control to precisely move by calculating the lifting and moving speed by receiving the weight of the heavy object mounted on the hook 400.

la. hook

The hook 400 is attached to the lifting switch 300, as shown in [Fig. 1] and [Fig. 2]. At this time, the hook 400 is manufactured by a conventional technique for hooking and fixing a weight to be substantially lifted.

In particular, the hook 400 is connected to the tension rod 330 mounted inside the lift switch 300 so that the load is transmitted to the load cell 320 through the tension rod 330 when a heavy object is lifted. Therefore, it is desirable to configure it so that the load of the heavy object can be easily checked.

In the drawings, reference numeral "370" denotes an emergency button for stopping the intelligent lift device according to the present invention when an emergency situation occurs.

As described above, in the present invention, it is possible to accurately control through proportional control while being safe through a human body detection function and a hall sensor. In addition, it is possible to control low vibration proportional through a hoisting machine that combines a worm reducer having a self-locking function and a BLDC motor.

100: hoisting machine
110: reducer
120: motor
200: wire
300: lifting switch
310: main body
320: load cell
330: tension rod
340: Hall sensor
350: human body detection sensor
360: controller

Claims (5)

A hoisting machine 100 including a reducer 110 and a motor 120; A wire 200 connected to the hoisting machine 100 to expand and contract the length; A lifting switch 300 connected to the wire 200; And a hook 400 connected to the lifting switch 300;
The lifting switch 300,
Body 310;
A load cell 320 mounted inside the main body 310 and connected to the wire 200 on one side;
A tension rod 330 connected to one side to the load cell 320 and the other to a hook 400 and supported by springs 331 fixed to the main body 310 on both sides;
A hall sensor 340 mounted on the tension rod 330 to detect a position in which the body 310 is elastically supported by the spring 331 and moves in the longitudinal direction of the tension rod 330;
A human body detection sensor 350 mounted on the body 310 or the tensile rod 330 to detect a body in contact with the body 310; And
Intelligent lift device comprising a; a controller (360) for controlling the overall lifting switch (300).
In claim 1,
The reducer 110,
Intelligent lift device, characterized in that it is a long worm reducer with a self-locking function.
In claim 1,
The motor 120,
Intelligent lift device, characterized in that the BLDC motor.
In paragraph 3,
The BLDC motor,
Intelligent lift device, characterized in that the BLDC motor condition is monitored by an inductive sensor.
In any one of claims 1 to 4,
The controller 360 is configured to perform the following operation,
(1) When an impact or pressure is applied to the body 310, the lift is operated when it is determined that it is a human body through the human body detection sensor 350
(2) When the body 310 is stretched and contracted in the longitudinal direction using the human body, the stretched distance is detected by the hall sensor 340, and the hook 400 is moved up and down through the hoisting machine 100 in proportion to the detected distance. Control to be transferred to
(3) Intelligent lift device, characterized in that it receives the weight of the heavy object mounted on the hook 400, calculates the lifting and moving speed, and controls it to move precisely.

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