KR102519240B1 - Smart lifting switch and Lifting device using the same - Google Patents

Abstract

The present invention relates to a smart lifting switch sensing the direction of power and grip of a worker and a lifting device controlling a rotation direction of a motor in a traction machine by using sensing information transmitted from the smart lifting switch. The purpose of the present invention is to provide the smart lifting switch capable of stably controlling the vertical movement of the lifting device according to intention of the worker. The smart lifting switch includes: a cylinder-type casing having a grip unit on the outer circumference of the lower part of a cylinder type body divided into an upper part, a middle part, and a lower part, wherein a linear bush is connected to an upper end and a lower end of a hollow hole in a longitudinal direction; a shaft inserted into an inner hole of the linear bush at the upper end and the lower end, and having upper and lower protrusions formed to be separated at a part corresponding to the middle part of the casing body, wherein the shaft includes a non-contact type human body sensor at a corresponding part to the position of the grip unit of the casing; an upper spring arranged between the upper protrusion and the linear bush at the upper end by being inserted into the outside of the upper end of the shaft; a lower spring arranged between the lower protrusion and the linear bush of the lower end by being inserted into the outside of the lower end of the shaft; a vertical bar including a magnet in the upper part and connected to the upper part of the casing; and a printed circuit board (PCB) electrically connected to the non-contact type human body sensor and including a hall sensor sensing a vertical movement of the magnet while being mounted.

Description

Smart lifting switch and lifting device using the same {Smart lifting switch and Lifting device using the same}

The present invention relates to a smart lifting switch that detects a grip and force direction of an operator and a lifting device that controls the rotation direction of a hoist motor by sensing information transmitted from the smart lifting switch.

Lifts are used to lift and assemble or transport heavy objects at industrial or manufacturing sites. Currently, low-cost hoist cranes are applied as the above 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, so in industrial or manufacturing sites that require high precision. There are limits to use.

Patent Nos. 10-1851782 and 10-01857477 solve the above problem by providing an intelligent lifting device, but do not suggest a means for the operator to conveniently control the lifting device according to the working situation.

Publication No. 10-2021-0020222 proposes a means for detecting a worker's work situation through a human body sensor and a hall sensor, but determining the lifting distance of a heavy object in proportion to the moving distance by holding the lifting switch by the worker It is questionable how much it can contribute to work convenience.

1. Patent Publication 10-2021-0031064 (2021.03.19.) 2. Patent Publication 10-2021-0020222 (2021.02.24.) 3. Japanese Unexamined Patent Publication No. 2008-239258 (October 9, 2008) 4. Registered Utility Model Publication No. 20-0427691 (2006.09.29.)

The present invention relates to a smart lifting switch capable of stably controlling the vertical movement of a lifting device according to an operator's intention and a lifting device including the same.

The present invention is a cylinder type in which linear bushes 113a and 113b are coupled to the upper and lower ends of the longitudinal hollow hole 111 and are divided into upper, middle, and lower parts 112-1, 112-2, and 112-3. a cylindrical casing 110 having a grip part 114 formed on the outer periphery of the lower part 112-3 of the body 112; It is inserted into the inner hole of the upper and lower Linear Bushes 113a and 113b, and the upper and lower protruding jaws 121a and 121b are formed at portions corresponding to the middle part 112-2 of the body 112 of the casing 110. a shaft 120 spaced apart from each other and provided with a non-contact human body sensor 122 at a corresponding portion of the grip portion 114 of the casing 110; an upper spring 130a fitted to the outer side of the upper end of the shaft 120 and disposed between the upper linear bush 113a and the upper protruding jaw 121a; a lower spring 130b fitted to the outside of the lower end of the shaft 120 and disposed between the lower protruding jaw 121b and the lower linear bush 113b; A vertical bar 140 coupled upward to the top of the casing 110 and having a magnet 141 thereon; and a PCB (Printed Circuit Board, 150) electrically connected to the non-contact human body sensor 122 and equipped with a hall sensor for detecting vertical movement of the magnet 141 in a fixed state; Provides a smart lifting switch 100 comprising a.

In the present invention, the stopper 116 is installed so that its tip protrudes between the upper and lower protrusions 121a and 121b of the shaft 120 by penetrating the middle portion 112-2 of the body 112 of the casing 110 laterally. ); may be configured to further include.

In addition, the smart lifting switch 100 of the present invention converges from above and below to the inside of the center opposite the installation site of the stopper 116 between the upper and lower protruding jaws 121a and 121b of the shaft 120. formed inclined grooves 123; a transverse hole 117 formed in the middle portion 112-2 of the body 112 of the casing 111; a bearing 118 installed inside the cross hole 117; A protruding end 162 is formed at the inner end of the rod 161 that is inserted into the bearing 118 and horizontally moved, and the protruding end 162 is in contact with the inclined groove 123 to drive the roller 163 A horizontal guide bar provided with (160); And a transverse spring 170 inserted into the horizontal guide bar 160 and disposed between the bearing 118 and the protruding end 162; It may be configured to further include.

In addition, the smart lifting switch 100 of the present invention is a pipe-like member on which upper and lower flanges 181a and 181b are formed, and the hollow hole 111 of the casing 110 in a state coupled to the outside of the shaft 120 a sleeve 180 inserted into the inner side, the upper flange 181a supporting the lower end of the lower spring 130b, and the lower flange 181b being in contact with the upper end of the lower linear bush 113b; It may be configured to further include.

In addition, the present invention, including the smart lifting switch 100, but a motor 210, a reduction gear 220, a winding machine 200 equipped with a winding drum 230 and a control unit 240; A wire 300 wound around the winding drum 230 and unwound or wound up according to the direction of rotation of the motor 210; and a housing 400 coupled to an end of the wire and having a load cell (not shown) for measuring a load transmitted to the wire and the PCB 150 embedded therein; It is configured to include, the upper end of the shaft 120 is coupled to the load cell (not shown), the lower end is coupled to the hook 500, and the control unit 240 has the sensing information collected from the PCB 150. is provided together with a lifting device (1), characterized in that configured to control the rotation direction of the motor (210) by receiving a.

According to the smart lifting switch and the lifting device using the same provided by the present invention,

When the operator grips the grip and applies force in the direction of lowering or raising, the shaft of the smart lifting switch is fixed and the casing moves up and down in a stable and linear motion within a limited range. By controlling the driving direction of the motor, it is possible to lift heavy objects by automatically winding up or unwinding the wire as much as the set interval.

[Figure 1] is a longitudinal sectional view of a smart lifting switch provided by the present invention.
[Figure 2] is a longitudinal sectional view of a casing embodiment applied to the present invention.
[Figure 3] is a longitudinal cross-sectional view of a shaft embodiment applied to the present invention.
[Figure 4] schematically shows a lifting device provided by the present invention.

Hereinafter, the present invention will be described in detail in conjunction with the accompanying drawings.

As shown in [Fig. 1], the present invention is coupled with the linear bushes 113a and 113b at the upper and lower ends of the longitudinal hollow hole 111, and the upper, middle, and lower parts 112-1, 112-2, 112-3), a cylindrical casing 110 having a grip part 114 formed on the outer periphery of the lower part 112-3 of the cylindrical body 112; It is inserted into the inner hole of the upper and lower Linear Bushes 113a and 113b, and the upper and lower protruding jaws 121a and 121b are formed at portions corresponding to the middle part 112-2 of the body 112 of the casing 110. a shaft 120 spaced apart from each other and provided with a non-contact human body sensor 122 at a corresponding portion of the grip portion 114 of the casing 110; an upper spring 130a fitted to the outer side of the upper end of the shaft 120 and disposed between the upper linear bush 113a and the upper protruding jaw 121a; a lower spring 130b fitted to the outside of the lower end of the shaft 120 and disposed between the lower protruding jaw 121b and the lower linear bush 113b; A vertical bar 140 coupled upward to the top of the casing 110 and having a magnet 141 thereon; and a PCB (Printed Circuit Board, 150) electrically connected to the non-contact human body sensor 122 and equipped with a hall sensor for detecting vertical movement of the magnet 141 in a fixed state; Provides a smart lifting switch 100 comprising a.

Hereinafter, the detailed structure of each component of the smart lifting switch 100 provided by the present invention and the coupling/action relationship between the components will be described in detail.

As shown in FIG. 2, the casing 110 has a longitudinal hollow hole 111 formed in the cylindrical body 112.

Linear bushes 113a and 113b are coupled to upper and lower ends of the hollow hole. The upper and lower linear bushes 113a and 113b have a plurality of balls in their inner holes. A shaft 120 to be described later is inserted into the inner hole of the upper and lower linear bushings 113a and 113b, and a plurality of balls press the shaft 120 to the side. Although the shaft 120 is fixed, the casing 110 can vertically and linearly move along the shaft 120 via the upper and lower linear bushes 113a and 113b.

The cylindrical body 111 is divided into upper, middle and lower parts 112-1, 112-2 and 112-3. A grip part 114 is formed on the outer periphery of the lower part 112-3, so that the operator holds the grip part 114. Details regarding the upper portion 112-1 and the middle portion 112-2 will be described later.

The shaft 120 is inserted into the inner holes of the upper and lower Linear Bushes 113a and 113b, and as described above, the casing 110 is fixed via the upper and lower Linear Bushes 113a and 113b. It is configured to perform up and down linear motion on the shaft 120. As shown in [FIG. 3], the upper and lower protruding jaws 121a and 121b are spaced apart from each other at a portion corresponding to the middle portion 112-2 of the body 112 of the casing 110, and the casing 110 A non-contact type human body sensor 122 is provided at a corresponding part of the grip part 114 of the position.

The upper spring 130a is fitted to the outer side of the upper end of the shaft 120 and is disposed between the upper linear bush 113a and the upper protruding jaw 121a, and the lower spring 130b is positioned outside the lower end of the shaft 120. and is disposed between the lower protruding jaw 121b and the lower linear bush 113b.

The upper spring 130a is compressed according to the upward linear movement of the casing 110, and the lower spring 130b is compressed according to the downward linear movement of the casing 120.

As the grip part 114 of the lower portion 112-3 of the cylindrical body 112 of the casing 110 becomes longer, when the distance between the lower protruding jaw 121b and the lower linear bush 113b increases, the lower 112-3, the supporting jaw 115 as shown in [Fig. 2] is formed on the inside and the supporting jaw 115 supports the lower end of the lower spring 130b, so that the casing 110 An appropriate compressive load may be applied to the lower spring 130b during upward linear motion.

In addition, the sleeve 180 as shown in [Fig. 1] can be coupled to the outside of the shaft 120. The sleeve 180 is a pipe-shaped member having upper and lower flanges 181a and 181b, and is inserted into the hollow hole 111 of the casing 110 while being coupled to the outside of the shaft 120, A flange 181a supports the lower end of the lower spring 130b, and the lower flange 181b is arranged to contact the upper end of the lower linear bush 113b. Accordingly, when the casing 110 linearly moves upward, an appropriate compressive load can be applied to the lower spring 130b.

A vertical bar 140 is coupled upward to an upper end of the casing 110, and a magnet 141 is provided on the upper portion of the vertical bar 140. According to the vertical linear movement of the casing 110, the vertical bar 140 and the magnet 141 move together.

The PCB 150 is fixed outside the casing 110, is electrically connected to the non-contact human body sensor 122, and is provided with a hall sensor for detecting the vertical movement of the magnet 141. has been

The PCB may be embedded in a housing 400 to be described later. As shown in FIG. 1, the wire connected from the non-contact human body sensor 122 may move along a path formed on the shaft 120 and be connected to the PCB.

The moment the user grips the grip part 114, the grip state is detected by the non-contact human body sensor 122, and when the user applies downward force in this grip detection state, the casing 110 moves in a downward direction. , and accordingly, the magnet 141 also makes a downward linear motion, so that the Hall sensor of the PCB 150 senses the downward movement of the magnet 141 . Accordingly, the PCB 150 detects a situation in which the operator grabs and lowers the grip part 114 and transmits the situation to the controller 240 of the hoisting machine 200 to be described later, so that the controller 240 removes the wire 300 to be described later. The motor 210 is driven in the direction of unwinding for a certain period. On the other hand, as the casing 110 linearly moves downward, the lower spring 130b is compressed to control the range of linear motion of the casing 110, and the restoring force of the lower spring 130b reduces the casing 110 ) to return to its original position.

Conversely, when the user holds the grip part 114 and applies an upward force, the casing 110 performs an upward linear movement, and accordingly, the magnet 141 also performs an upward linear movement so that the PCB 150 The hall sensor of detects the upward movement of the magnet 141. Accordingly, the PCB 150 recognizes the situation in which the operator grabs and raises the grip part 114 and transmits it to the controller 240 of the hoisting machine 200 to be described later, so that the controller 240 removes the wire 300 to be described later. The motor 210 is driven in a winding direction for a certain period. On the other hand, as the casing 110 linearly moves upward, the upper spring 130a is compressed to control the range of linear motion of the casing 110 and the restoring force of the upper spring 130a controls the casing 110 ) to return to its original position.

On the other hand, the smart lifting switch 100 provided by the present invention penetrates the middle part 112-2 of the body 112 of the casing 110 laterally, so that the tip is the upper and lower protruding jaws 121a of the shaft 120. , 121b) may be configured to further include a stopper 116 installed to protrude between them. As described above, the upper and lower springs 130a and 130b control the linear motion range of the casing 110, but an instantaneous overload exceeding the elastic contraction range may be applied. Accordingly, the stopper 116 may be configured so that the range of vertical linear motion of the casing 110 is strictly limited within the range of the distance d between the upper and lower protruding jaws 121a and 121b.

In addition, an inclined groove 123 converging from the top and bottom to the inside of the center is formed on the opposite side of the stopper 116 installation site between the upper and lower protruding jaws 121a and 121b of the shaft 120,

a transverse hole 117 formed in the middle portion 112-2 of the body 112 of the casing 111; a bearing 118 installed inside the cross hole 117; A protruding end 162 is formed at the inner end of the rod 161, which is inserted into the bearing 118 and horizontally moved, and the protruding end 162 is in contact with the inclined groove 123 to drive the roller 163 A horizontal guide bar provided with (160); And a transverse spring 170 inserted into the horizontal guide bar 160 and disposed between the bearing 118 and the protruding end 162; By further comprising, while the casing 110 moves more smoothly up and down, the control force increases along with the linear motion range, so that sudden braking is not applied to the linear motion, and the restoring force to the original position of the casing 110 is also improved can make it

To explain the above process in detail,

When the casing 110 is raised or lowered by a user's force, the roller 163 provided at the protruding end 162 of the horizontal guide bar 160 travels along the inclined groove 123. While the roller 163 travels along the inclined groove 123, the rod 161 of the horizontal guide bar 160 protrudes outward from the bearing 118, and is formed between the bearing 118 and the protruding end 162. The disposed transverse spring 170 suppresses the driving of the roller 163 while being compressed. That is, the transverse spring 170, together with the upper spring 130a or the lower spring 130b, serves to return the casing 110 to its original position while controlling the range of linear motion of the casing 110.

The present invention includes "the traction machine 200 including the smart lifting switch 100, but having a motor 210, a reducer 220, a winding drum 230 and a control unit 240; A wire 300 wound around the winding drum 230 and unwound or wound up according to the rotation direction of the motor 210; and a housing 400 coupled to an end of the wire and containing a load cell (not shown) for measuring a load transmitted to the wire and the PCB 150; It is configured to include, the upper end of the shaft 120 is coupled to the load cell (not shown), the lower end is coupled to the hook 500, the control unit 240 senses information collected from the PCB 150 is provided together with a lifting device (1), characterized in that configured to control the rotation direction of the motor (210) by receiving a.

As shown in FIG. 4, the hoisting machine 200 includes a motor 210, a reducer 220, a winding drum 230, and a control unit 240.

A wire 300 is wound around the winding drum 230, and the motor 210 pivots in a clockwise or counterclockwise direction by applied power to rotate the winding drum 230 so that the wire 300 to be rolled up or unwound. The reducer 220 controls the shaft rotation speed of the motor within an appropriate range.

The controller 240 receives the sensing information collected from the PCB 150 and controls the rotation direction of the motor 210 . In addition, the rotation speed and rotation angle of the motor 210 can be controlled according to the set values. The PCB 150 may transmit sensing information to the control unit 240 through a wired/wireless communication means.

As described above, if the operator grabs the grip part 114 by the smart lifting switch 100 and applies a force to raise or lower it, the non-contact human body sensor 122 and the hall sensor detect the situation By sensing and transmitting to the controller 240, the rotation direction of the motor 210 is controlled to wind up or unwind the wire 300.

The housing 400 is coupled to the end of the wire, and a load cell (not shown) measuring a load transmitted to the wire and the PCB 150 are embedded therein. The upper end of the shaft 120 is coupled to the load cell (not shown) and the lower end is coupled to the hook 500. When a weight is lifted with the hook 500, the weight is measured by the load cell, and when the weight exceeds the permissible weight, one or more warning signals among sound, light, text, and color may be generated.

In the above, the present invention was examined in detail with specific examples. However, the present invention is not limited by the above embodiments and can be modified and modified within the scope without departing from the gist of the present invention. Accordingly, the claims of the present invention include such modifications and variations.

1: lifting device
100: smart lifting switch
110: casing 111: hollow hole 112: cylindrical body
112-1: upper part 112-2: middle part 112-3: lower part
113a: upper linear bush 113b: lower linear bush 114: grip part
115: support jaw 116: stopper 117: transverse hole
118: bearing
120: shaft 121a: upper protruding jaw 121b: lower protruding jaw
122: non-contact human body detection sensor 123: inclined groove
130a: upper spring 130b: lower spring
140: vertical bar 141: magnet
150: PCB
160: horizontal guide bar 161: rod 162: protruding end
163: roller
170: transverse spring
180: sleeve 181a: upper flange 181b: lower flange
200: traction machine 210: motor 220: reducer
230: winding drum 240: control unit
300: wire 400: housing 500: hook

Claims (5)

Linear bushes 113a and 113b are coupled to the upper and lower ends of the longitudinal hollow hole 111, and a cylindrical body 112 divided into upper, middle, and lower parts 112-1, 112-2, and 112-3 a cylindrical casing 110 having a grip part 114 formed on the outer periphery of the lower part 112-3;
A stopper 116 installed so that its tip protrudes between the upper and lower protrusions 121a and 121b of the shaft 120 by penetrating the middle portion 112-2 of the body 112 of the casing 110 sideways;
It is inserted into the inner hole of the upper and lower Linear Bushes 113a and 113b, and the upper and lower protruding jaws 121a and 121b are formed at portions corresponding to the middle part 112-2 of the body 112 of the casing 110. a shaft 120 spaced apart from each other and provided with a non-contact human body sensor 122 at a corresponding portion of the grip portion 114 of the casing 110;
an upper spring 130a fitted to the outer side of the upper end of the shaft 120 and disposed between the upper linear bush 113a and the upper protruding jaw 121a;
a lower spring 130b fitted to the outside of the lower end of the shaft 120 and disposed between the lower protruding jaw 121b and the lower linear bush 113b;
A vertical bar 140 coupled upward to the top of the casing 110 and having a magnet 141 thereon; and
PCB (Printed Circuit Board, 150) electrically connected to the non-contact human body sensor 122 and equipped with a hall sensor for detecting vertical movement of the magnet 141 in a fixed state; Smart lifting switch 100 comprising a.
delete In paragraph 1,
An inclined groove 123 formed in a shape converging from the top and bottom to the inside of the center opposite the stopper 116 installation site between the upper and lower protruding jaws 121a and 121b of the shaft 120;
a transverse hole 117 formed in the middle portion 112-2 of the body 112 of the casing 111;
a bearing 118 installed inside the cross hole 117;
A protruding end 162 is formed at the inner end of the rod 161, which is inserted into the bearing 118 and horizontally moved, and the protruding end 162 is in contact with the inclined groove 123 to drive the roller 163 A horizontal guide bar provided with (160); and
a transverse spring 170 inserted into the horizontal guide bar 160 and disposed between the bearing 118 and the protruding end 162; Smart lifting switch 100, characterized in that configured to further include.
In paragraph 1,
As a pipe-like member formed with upper and lower flanges 181a and 181b,
It is inserted into the hollow hole 111 of the casing 110 in a state of being coupled to the outside of the shaft 120,
The upper flange 181a supports the lower end of the lower spring 130b,
a sleeve 180 disposed such that the lower flange 181b is in contact with the upper end of the lower linear bush 113b; Smart lifting switch 100, characterized in that configured to further include.
Including the smart lifting switch 100 of any one of claims 1, 3 and 4,
A winding machine 200 equipped with a motor 210, a speed reducer 220, a winding drum 230 and a control unit 240;
A wire 300 wound around the winding drum 230 and unwound or wound up according to the direction of rotation of the motor 210; and
a housing 400 coupled to an end of the wire and containing a load cell (not shown) measuring a load transmitted to the wire and the PCB 150; It is composed of,
The upper end of the shaft 120 is coupled to the load cell (not shown) and the lower end is coupled to the hook 500,
The control unit 240 is a lifting device (1), characterized in that configured to receive the sensing information collected from the PCB (150) of the smart lifting switch (100) to control the rotation direction of the motor (210).

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