KR101455060B1 - Wire type elevator and falling prevention method of the same - Google Patents

Abstract

The present invention relates to an elevator, and more particularly, to a wire type elevator and a method of preventing a crash of the same, in which the wire type elevator includes a plurality of elevating units to vertically lift up and down an elevating cart, a guide to guide a movement of the elevating cart, and a deceleration unit provided on the guide to prevent the elevating cart from crashing. To the end, the elevator of the present invention includes: an elevating cart formed therein with a containing space; a plurality of first elevating units coupled to the elevating cart to vertically move the elevating cart; a second elevating unit separately coupled to the elevating cart to prevent the elevating cart from crashing in a dangerous situation; and a controller to control the first elevating unit to vertically move the elevating cart to identically control vertical velocities and moving directions of each first elevating unit.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a wire type elevating apparatus,

The present invention relates to an elevating apparatus, in which a plurality of elevating means elevates or lowers an elevating truck in a vertical direction, guiding means guides the movement of the elevating truck, and a decelerating means is mounted on the guiding means, The present invention relates to a wire-type elevating apparatus for preventing fall, and a fall prevention method thereof.

In general, vertical tunnels are structures that can be used in ammunition excavated underground, as well as in ventilation ducts used for ventilation of underground roads and underground squares, as well as pumping stations and hydroelectric power plants. The vertical tunnel excavates the ground in a vertical direction, and then injects concrete into the space between the excavated ground and a predetermined spacing to form a refractory wall.

In order to perform such an operation, a crane is driven in an excavating equipment or a bucket device for carrying out the work, and the excavation of the ground in the vertical direction or the molding of the refractory wall is carried out. However, it is difficult to excavate the ground or work to form the refractory wall at a time, and it has to be carried out after a certain period of time. Accordingly, when an operator must move to a working position in a vertical tunnel after boarding an excavation equipment, a bucket device, a slip foam device or the like as in the prior art, the operator must move the devices with heavy load every time, .

As a result of the above-mentioned problems, the patent document described in the following prior art document is disclosed in Korean Patent Laid-Open Publication No. 2010-0100171, in which when an underground structure is constructed, an underground continuous wall and a plurality of center files are constructed, Wherein the lifting device is provided on the center pile or the underground continuous wall so as to stack the plurality of slabs to form a medallion, And a slab elevating device for a reverse side of the underground structural mall, which moves the slab to a mounting position by repeating a predetermined length along the longitudinal direction of the center pile or the underground continuous wall by a jack.

However, the prior art document does not disclose a technique for guiding the lift device and automatically decelerating the lift device when the lift device is suddenly dropped, and for securing the safety of the passenger or the mount even when an abnormality occurs in the lift device.

Patent Document: Korean Patent Publication No. 2010-0100171

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the conventional art as described above, and it is an object of the present invention to provide an elevator system in which a lift device is easily raised and lowered by a plurality of elevator means, The present invention also provides a wire type elevating device and a fall prevention method for securing the safety of an occupant or an object when the elevating device is mounted on the means for decelerating automatically when the elevating device is suddenly lowered and an abnormality occurs in the elevating device.

To this end, the wire-type elevator according to the present invention comprises: an elevator car having an accommodation space formed therein; A plurality of first elevation portions connected to the elevation car to vertically move the elevation car; A second elevator connected separately to the elevator car to prevent the elevator car from falling in a dangerous situation; And a control unit controlling the first elevating unit to vertically move the elevating car and controlling the vertical moving speed and the moving direction of each of the first elevating units equally. .

According to the present invention, the wire-type elevator includes at least one guide wire vertically spaced apart from the elevator car by a predetermined distance to guide vertical movement of the elevator car. At least one guide portion mounted on one side of the upper portion of the lifting and lowering carriage and guiding the lifting and lowering carriage through the other end of the guide wire in a vertical direction; .

According to the present invention, the guide portion may include a holder pipe in the form of a hollow tube, the holder pipe having one end termini mounted on one upper side of the elevator car; A holder bar into which one end is inserted into the other end of the holder pipe; A spring disposed inside the holder pipe and abutting the one end of the holder bar; And an end guide provided at the other end of the holder bar, wherein the guide wire penetrates in a vertical direction.

According to another aspect of the present invention, the end guide includes a first sheave formed on one side of the guide wire and having a rail formed on a circumferential surface thereof; A second sheave formed on the other side surface of the guide wire and having a rail on a circumferential surface thereof; And a connecting plate connecting the first sheave and the second sheave and connected to the holder bar; .

According to the present invention, the end guide is formed in a ring shape, and is connected to the inside of the end guide, and includes two inward facing friction members, the friction member being electrically connected to the control unit, The control unit is magnetized when an electric current is applied thereto, and is an electromagnetic brake break that decelerates the elevator car by rubbing the guide wire.

In addition, according to the present invention, the control unit may include a speed sensor attached to the elevator car and sensing a descending speed of the elevator car; A comparator for periodically receiving the descending speed information of the elevating truck from the speed sensor and transmitting the speed exceeding information when the descending speed of the elevating truck exceeds a predetermined speed; An alarm device for generating an alarm that the occupant can recognize when the speed excess information is received; A speed reducer for frictionally contacting the friction member with the guide wire by applying an electric current to the friction member when the speed excess information is received; And a breaker for shutting down the power of the first lifting unit when the descending speed information received after the start of the speed reducer exceeds a predetermined speed. .

Meanwhile, according to the present invention, the control unit may include a keypad having buttons for ascending, descending, and speeding of the lifting and lowering carriage inside the lifting and lowering carriage; A display for displaying a current state of the elevator car; And a radio transceiver provided inside the lifting truck; And the current state includes a speed, a load, and a current height of the lifting truck.

According to the present invention, the first elevating portion includes a plurality of first wires fixedly coupled to the elevating and lowering carriage and supporting the elevating carriage upward; A plurality of first wire drums for winding up or releasing the first wires for vertical movement of the lifting truck; A plurality of first motors for rotationally driving the first wire drums; And a first pivot shaft for transmitting a rotational force and a pivoting direction generated by the first motor to the first wire drum; .

In addition, according to the present invention, the first wires are provided in each of the regions having the same moment at the center of gravity of the lifting and lowering carriage, and the number of the first wires is an even number.

According to another aspect of the present invention, the second elevating portion includes a second wire fixedly coupled to an upper portion of the elevating car, and supporting the elevating car upwards; A second wire drum for winding or releasing the second wire and maintaining the state of the second wire in a loose state; A second motor for rotating the second wire drum and stopping the rotation when a tensile force higher than a predetermined tension is applied to the second wire; And a second pivot shaft for transmitting a turning force and a pivoting direction generated by the second motor to the second wire drum. .

According to the present invention, the second wire is connected to the center of gravity of the upper portion of the elevator car, and a power cable for supplying power to the control unit; And a signal cable for transmitting a control signal of the control unit or receiving an external signal; .

According to the present invention, the second motor is a torque motor.

To this end, the wire type lifting apparatus fall prevention method according to the present invention includes: (A) periodically sensing a descending speed of a lifting truck by a speed sensor; (B) comparing the descending speed with a predetermined speed when the control unit receives the descending speed, and transmitting the speed exceeding information if the descending speed exceeds the predetermined speed; (C) when the control unit receives the speed-exceeding information, an alarm is generated by the alarm unit, and the speed reducer decelerates the descending speed of the lifting vehicle; And (D) when the control unit determines that the descending speed of the elevating truck transmitted from the speed sensor exceeds the predetermined speed, the control unit interrupts the power of the first elevating unit; .

According to the present invention, in the step (C), the control unit applies magnetization to the friction member by applying a current to the friction member, so that the frictional member and the guide And the wires rub against each other to decelerate the elevator car.

In addition, according to the present invention, in the step (D), the control unit may include: (E) shutting off the power of the second lifting unit; .

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

According to various embodiments of the present invention, even when one of the first elevators fails due to a plurality of first elevators, it is possible to prevent the elevator from falling down.

According to various embodiments of the present invention, even if all of the first elevator sections fail, the second elevator section has the effect of preventing the descending of the elevator truck.

In addition, according to various embodiments of the present invention, the control unit senses the descending speed of the elevating truck and automatically decelerates the landing gear when an abnormal symptom occurs, thereby preventing an accident from occurring.

Therefore, according to the various embodiments of the present invention, it is possible to prevent fall of the platform and ultimately to prevent loss of human life and material caused thereby.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exemplary diagram showing a wire type elevator according to an embodiment of the present invention; Fig.
FIGS. 2A to 2C are views illustrating an example of a manner in which a first wire according to an embodiment of the present invention is fixedly coupled to an upper portion of a lifting carriage.
FIGS. 3A and 3B are views illustrating a point where a first wire according to an embodiment of the present invention is fixed to an upper portion of an elevating carriage; FIG.
4A is an exemplary view showing an interior of a second wire according to an embodiment of the present invention;
FIG. 4B is an exemplary view showing the inside of another second wire according to an embodiment of the present invention; FIG.
Fig. 5 is an exemplary view showing a wire type elevator according to another embodiment of the present invention; Fig.
6 is an exemplary view showing a guide portion according to another embodiment of the present invention;
7 (a) is a sectional view showing a front section of a longitudinal guide according to another embodiment of the present invention.
Fig. 7 (b) is a cross-sectional view showing an upper section of Fig. 7 (a). Fig.
8 is an exemplary view showing another example of the end guide according to another embodiment of the present invention;
Fig. 9 is an exemplary view showing another example of a wire-type lift device according to another embodiment of the present invention; Fig.
10 is a flowchart showing a method of preventing a fall of a wire type elevating device according to another embodiment of the present invention.
11 is a block diagram showing a control unit for performing fall-down prevention of a wire type elevator according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. Also, the terms " first ", " second ", and the like are used to distinguish one element from another element, and the element is not limited thereto.

Furthermore, the singular forms used below include the plural forms as well unless the phrases expressly have the opposite meaning. Throughout the specification, when an element is referred to as "including" an element, it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

1 to 11 are denoted by the same reference numerals.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exemplary view showing an example of a wire-type landing gear according to an embodiment of the present invention.

Referring to FIG. 1, a wire type elevating apparatus 100 according to an embodiment of the present invention includes an elevating carriage 110, a first elevating unit 120, a second elevating unit 130, and a control unit 140 .

The wire type elevating apparatus 100 constructed as shown in FIG. 1 according to an embodiment of the present invention will be described in detail as follows.

Referring first to Fig. 1, an elevator car 110 is started.

The lifting and lowering carriage 110 is provided with a receiving space in which a person can ride or load, and may be formed of a frame structure, a cage structure, an integral structure, or the like. The lifting and lowering carriage 110 is supported by a first lifting part 120 including a first wire 121, a first wire drum 122, and a first motor 123 Move up and down vertically.

To this end, the first wire 121 is fixedly coupled to the upper portion of the lifting carriage 110.

An example in which the first wire 121 is fixedly coupled to the upper portion of the elevating carriage 110 will be described with reference to Figs. 2A to 2C.

2A, a first wire 121 is connected to a first ring A provided on an elevation carriage 110 and a second ring B provided on an end of the first wire 121 And can be fastened and joined. Referring to FIG. 2B, the first wire 121 may be coupled to the first ring A provided on the elevating carriage 110 by hooking the hook C fastened to the first wire 121 . In this case, the hooks of the first loop A and the hook C are not released due to the load of the lifting carriage 110. Referring to FIG. 2C, the first wire 121 can be coupled to the first ring C provided at the upper portion of the lifting carriage 110 by tightly winding the first wire 121. In this case, it is preferable that the first wire 121 is formed of a metallic material so as to support the load of the elevator car 110 in order to raise / lower the elevator car 110. Therefore, the first wire 121 is welded It may be fixed.

The first wire 121 may be fixedly coupled to the first ring C provided on the elevating carriage 110 in the same manner as in FIGS. 2A to 2C, but the present invention is not limited thereto, Any method can be used as long as it is a coupling type in which the load of the lifting carriage 110 can be supported.

When the first wire 121 is fixedly coupled to the upper portion of the lifting carriage 110 as described above, the first motor 123 winds the first wire 121 on the first wire drum 122, The elevating carriage 110 can be vertically moved up and down.

That is, the first motor 123 is connected to the first wire drum 122 via the first rotating shaft 123a. When the first motor 123 rotates in one direction or rotates in the other direction, The power is transmitted to the first wire drum 122 through the first coaxial shaft 123a. Therefore, the first wire drum 122 can take up the first wire 121, raise the elevator car 110, and pull it out to lower the elevator car 110.

Referring again to FIG. 1, the first elevating portion 120 is provided on the left and right sides of the elevating carriage 110, respectively.

3A, the coupling point b of the first wire 121 provided on the left side and the coupling point c of the first wire 121 provided on the right side are connected to the upper portion of the lift truck 110. In this case, It is located at the same moment at the center of gravity.

Here, if the center of gravity is the upper center of the lifting carriage 110, the coupling points b and c are symmetrically spaced apart from the center of gravity by a predetermined distance a.

3B, when the first wire 121 is provided on the right and left sides and the upper and lower sides, the coupling points b and c of the first wires 121 provided on the right and left sides are connected to the upper It is located at the same moment at the center of gravity.

Here, if the center of gravity is the upper center of the lifting carriage 110, the defective points b and c on the left and right sides are symmetrically spaced apart from the center of gravity by a predetermined distance a, The coupling points d and e are also located symmetrically apart from the center of gravity of the lifting carriage 110 by a predetermined distance a.

3A and 3B, it can be seen that a plurality of first wires 121 are fixedly coupled to the upper portion of the lifting and lowering carriage 110. The first lifting unit 120 includes a plurality of first wires 121 The number of the first elevating portions 120 and the number of the first wires 121 are the same.

The first wire 121 is fixedly coupled to the upper portion of the lifting and lowering carriage 110 to support the load during the vertical movement of the lifting and lowering carriage 110. [

To this end, it is preferable that the plurality of first wires 121 have a supporting force higher than a self-load of the lifting truck 110 and a supporting force capable of supporting a maximum load on the lifting truck 110. Therefore, the first wire 121 can safely support the vertical movement load of the lifting carriage 110 without breaking.

In this case, if the first lift portion 120 provided with the plurality of first lift portions 120 does not coincide with the winding or unwinding operation, the first lift portion 120 moves up and down the lift truck 110 in the vertical direction, The balance of the seat 110 may collapse and tilt, resulting in a crash of the occupant or the load. Therefore, the control unit 140 simultaneously controls the winding and unwinding operations of the first elevating unit 120 provided for the plurality of units.

For this, the control unit 140 preferably controls the rotating speed and the rotating direction of the first motor 123 of the first elevating unit 120 having a plurality of the same.

Referring back to FIG. 1, the second lifting unit 130 is started.

The second lifting unit 130 includes a second wire 131, a second wire drum 132 and a second motor 133. When the first lifting unit 120 fails, 110 from falling down.

For this purpose, the second wire 131 is fixedly coupled to the center of gravity of the upper portion of the elevating carriage 110, and the load of the elevating carriage 110, which falls during an emergency such as a failure of the first elevating portion 120, The second motor 133 senses the rotation of the motor 131, and the rotation of the second motor 133 is stopped.

Therefore, it is preferable that the number of the second wires 131 has the same supporting force as that of the plurality of the first wires 121. The second motor 133 operates in the same manner as the first motor 121 at the normal time but when the load transmitted from the second wire 131 is heavier than a predetermined load, .

The control unit 140 controls the rotation direction and the turning force of the second motor 133 in the same manner as the first motor 123 so that the second wire 131 is wound on the second wire drum 132, The second wire 131 is loosened more loosely than the first wire 121 in order to prevent the load of the elevator car 110 from being loaded on the second motor 133, So as not to be influenced by the tensile force. The second wire 131 may include various power cables and signal cables.

FIG. 4A is an exemplary view showing an inside of a second wire according to an embodiment of the present invention, and FIG. 4B is an exemplary view showing an inside of another second wire according to an embodiment of the present invention.

Referring to FIG. 4A, the second wire 131 according to an embodiment of the present invention includes a power cable 131a for supplying power to the controller 140, And a signal cable 131b for transmitting a signal or receiving an external signal.

Here, it is preferable that the power cable 131a and the signal cable 131b may be formed in a single number or in a bundle. Also, it is preferable that the second wire 131 has a supporting force capable of supporting the load of the lifting and lowering carriage 110 in a state where the cables are embedded.

4B is different from FIG. 4A in that the outer surface of the other second wire 231 is formed of a metal wire so that it can have a higher supporting force than the second wire 131 shown in FIG. 4A.

The wire type elevating apparatus 100 according to an embodiment of the present invention prevents the lifting and lowering carriage 110 from swinging while moving in the vertical direction and prevents twisting of the first wire 121 and the second wire 131 And may be further provided with means for decelerating when the lifting carriage 110 descends. To this end, the wire type elevating apparatus 200 according to another embodiment of the present invention shown in FIG. 5 further includes at least one guide wire 210 and at least one guide unit 220.

5 is an exemplary view showing an example of a wire-type elevating apparatus 200 according to another embodiment of the present invention. The same reference numerals are given to the same constituent elements as those of the above-described constituent elements shown in Fig.

Referring to FIG. 5, the wire type elevating apparatus 200 according to another embodiment of the present invention further includes a guide wire 210 and a guide portion 220.

Here, at least one of the guide wires 210 is fixedly provided so as to be spaced apart from a path where the lifting and lowering carriage 110 moves vertically. Therefore, when the lifting carriage 110 moves in the vertical direction, the balance can be easily maintained with the help of the guide wire 210.

At least one guide wire 210 is fixedly spaced apart from the elevating carriage 110 by a predetermined distance and at least one guide part 220 protruding from the side surface of the elevating carriage 110 is connected to the guide wire 210, respectively.

Here, one end of the guide portion 220 is mounted on one side of the upper portion of the lifting carriage 110, and the other end of the guide portion 220 vertically penetrates the guide wire 210.

The guide portion 220 thus formed will be described in detail with reference to FIG.

6 is an exemplary view showing a guide part in detail according to another embodiment of the present invention.

Referring to FIG. 6, the guide unit 220 according to another embodiment of the present invention is mounted on the upper side of the lifting and lowering carriage 110, and is perpendicular to the main body of the lifting and lowering carriage 110.

That is, one end of the guide portion 220 is mounted on one side of the upper portion of the elevating carriage 110. The other end of the guide part 220 passes through the guide wire 210 in the vertical direction.

To this end, a longitudinal guide 221 having a hole through which the guide wire 210 passes in the vertical direction is provided. The end guide 221 is connected to one end of the holder bar 222 and is horizontally supported by the holder bar 222. The other end of the holder bar 222 is connected to a holder pipe 223, As shown in FIG.

The holder pipe 223 is formed in a hollow tube shape in which a part of the holder bar 222 is inserted into the inside and a spring 224 is provided so that the other end of the inserted holder bar 222 abuts.

Here, the spring 224 maintains the length of the holder bar 222 constant by elasticity, and the lifting and lowering carriage 110 acts to absorb the shock caused by the vertical movement. The holder pipe 223 is attached to the upper side of the lifting carriage 210.

Here, welding may be used as the attachment method, but it is preferable to hinge to secure flexibility when vertically moving the lifting and lowering carriage 110.

7 (a) and 7 (b), another example of the end guide according to another embodiment of the present invention is shown.

7 (a) and 7 (b), the end guide 221 is provided with a friction member 221a inside a circular wing formed in a ring shape.

Here, the friction member 221a serves as a brake for decelerating the elevator car 110 by the control unit 140 when the elevator car 110 is suddenly dropped.

Referring to Figs. 7 (a) and 7 (b), the friction member 221a is formed of two pieces and is electrically connected to the control unit 140. [ The friction member 221a connected in this way is magnetized by the current applied by the control unit 140 in a dangerous situation to generate attraction force and the two friction members 221a are attracted to the guide wire 210). Accordingly, the friction member 221a rubs against the guide wire 210 and decelerates the rapid descent speed of the lifting and lowering carriage 110 by the frictional force generated in this case. Here, if the guide wire 210 is formed of iron and a magnetic force is generated in the friction member 221a, the guide wire 210 may be directly attached to the guide wire 210, or may be frictioned with the guide wire 210 by the attraction force between the friction members 221a have.

Meanwhile, the end guide 221 may be provided in another form. This will be described with reference to FIG.

8 is an exemplary view showing another example of the guide of the guide portion according to another embodiment of the present invention.

8, another end guide 321 of the guide portion 220 according to another embodiment of the present invention is formed by the first sheave 321a and the second sheave 321b, and the first sheave 321a 321a and the second pulley 321b are connected by a connecting plate 321c and the connecting plate 321c is connected to an end of the holder bar 322. [

As shown in FIG. 8, it is preferable that the first sheave 321a and the second sheave 321b are formed with a rail so as to reduce friction with the guide wire 210. Also, as shown in FIG. 9, a plurality of guide units 220 may be formed according to another embodiment of the present invention.

Meanwhile, when the first wire 121 and the second wire 131, which are fixedly coupled to the upper portion of the lifting carriage 110, are bent, a means for reducing friction occurring at a portion contacting the bending region may be further provided And a pulley (not shown) is preferably applied as this means.

Next, a wire-type elevator falling prevention method according to another embodiment of the present invention will be described with reference to Figs. 10 and 11. Fig.

FIG. 10 is a flowchart showing a method of preventing fall of a wire type elevating device according to another embodiment of the present invention, and FIG. 11 is a view showing a control part performing fall prevention of a wire type elevating device according to another embodiment of the present invention Block diagram.

Referring to FIG. 10, the wire type elevator falling prevention method according to another embodiment of the present invention detects a falling speed of the elevator car 110 (S110). If the falling speed exceeds a predetermined speed S120), an alarm is generated and the descending speed of the elevating truck 110 is decelerated (S130). When the descending speed of the elevating truck 110 sensed after the decelerating operation exceeds a predetermined speed, the elevating truck 110 is stopped The power of the first lifting unit 120 is cut off (S140).

The wire type lifting apparatus fall prevention method according to another embodiment of the present invention will be described in detail with reference to FIGS. 10 and 11. FIG.

11, the control unit 140 according to another embodiment of the present invention includes a speed sensor 141, a comparator 142, an alarm unit 143, a speed reducer 144, A keyboard 145, a keypad 146, and a display 147, and the like.

First, the speed sensor 141 is attached to the elevating carriage 110, and periodically senses the descending speed of the elevating carriage 110. Then, the speed sensor 141 transmits the speed information of the elevator car 110 periodically sensed to the comparator 142 (S110).

The comparator 142 compares the speed information with a predetermined speed. If the speed information exceeds the predetermined speed, the speed excess information is transmitted to the alarm 143 and the speed reducer 144 (S120).

Here, the predetermined speed is stored in a storage means (not shown) provided in the comparator 142 as a threshold value of the speed at which the lifting carriage 110 can safely descend.

The storage means may be any of various types of readable recording media such as a RAM (Random Access Memory), a flash memory, a hard disk, a memory card, a USB memory, and the like.

Upon receiving the speed overrun information, the alarm device 143 generates an alarm that the occupant can recognize (S130). Preferably, the alarm is an alarm sound, a siren sound, or an alarm light flashing.

The speed reducer 144 moves the friction member 221a provided inside the wing of the end guide 221 at the end of the guide unit 220 to friction with the guide wire 210 S130). Here, it is preferable that the friction member 221a rubs against the guide wire 210 by an attractive force generated by being magnetized by receiving a current from the speed reducer 144. That is, the friction member 221a is an electromagnet.

The comparator 142 compares the speed information of the elevator car 110 retransmitted from the speed sensor 141 with the speed information of the elevator car 110 after the descent speed deceleration of the speed reducer 144 is performed at the same time as the alarm of the alarm device 143 is generated Compare the preset speeds. If the speed information of the retransmission elevator car 110 exceeds the preset speed information, the breaker 145 cuts off the power of the first motor 123 to stop the start of the first elevator 120 S140). In this case, the circuit breaker 145 may cut off the power of the second motor 133.

On the other hand, the elevator car 110 is provided with a keypad 146 having speed buttons for controlling the elevation, descent and speed of the elevator car 110, a display (not shown) for displaying the current state of the elevator car 110 147 may be provided to provide comfort to the passenger.

Here, the current state includes the speed and load of the lifting truck 110, and the current height of the lifting truck 110, and the like.

In addition, a wireless transceiver (not shown) capable of wired / wireless communication may be provided so that the passenger can easily communicate with the outside when the elevator car 110 stops at a high altitude.

As described above, the control unit 140 according to another embodiment of the present invention senses the abnormal descending speed of the lifting truck 110 and automatically decelerates the speed, thereby preventing the lifting truck 110 from falling.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

110: elevating truck 120: first elevating portion
130: second lifting unit 140:
210: guide wire 220: guide part
121: first wire 122: first wire drum
123: first motor 123a: first motor
131, 231: second wire 132: second wire drum
133: second motor 133a: second motor
131a: Power cable 131b: Signal cable
221, 321: end guide 222: holder bar
223: holder pipe 224: spring
221a: Friction member 321a: 1st pulley
321b: second pulley 321c: connecting plate
141: speed sensor, 142: comparator
143: Alarm device 144: Reduction gear
145: breaker 146: keypad
147: Display A: 1st ring
B: second ring C: third ring
a, b, c, d: junction point

Claims (15)

An elevator car having an accommodation space formed therein;
A plurality of first elevation portions connected to the elevation car to vertically move the elevation car;
A second elevator connected to the elevator car separately from the first elevator and preventing a fall of the elevator car in a dangerous situation; And
A control unit controlling the first elevating unit to vertically move the elevating car and controlling the vertical moving speed and moving direction of each of the first elevating units equally; Lt; / RTI >
The second lift portion
A second wire fixedly coupled to an upper portion of the elevating carriage and supporting the elevating carriage upward;
A second wire drum for winding or releasing the second wire and maintaining the state of the second wire in a loose state;
A second motor for rotating the second wire drum and stopping the rotation when a tensile force higher than a predetermined tension is applied to the second wire; And
A second pivot shaft for transmitting a turning force and a pivoting direction generated by the second motor to the second wire drum; And the wire type elevating device.
The method according to claim 1,
At least one guide wire vertically spaced apart from the elevating carriage by a predetermined distance in order to guide vertical movement of the elevating carriage; And
At least one guide portion mounted at one side of the upper portion of the elevating carriage and guiding the elevating carriage at the other end through the guide wire in a vertical direction; Further comprising a wire-type elevating device.
[3] The apparatus according to claim 2,
A holder pipe in the form of a hollow tube whose one end is mounted on one upper side of the elevating carriage;
A holder bar into which one end is inserted into the other end of the holder pipe;
A spring disposed inside the holder pipe and abutting the one end of the holder bar; And
And an end guide provided at the other end of the holder bar,
Wherein the guide wire penetrates in the vertical direction in the longitudinal guide.
[4] The apparatus of claim 3,
A first sheave formed on one side of the guide wire and having a rail formed on a circumferential surface thereof;
A second sheave formed on the other side surface of the guide wire and having a rail on a circumferential surface thereof; And
A connecting plate connecting the first sheave and the second sheave and connected to the holder bar; Wherein the wire-type elevating device includes:
[4] The apparatus of claim 3,
And is formed in a ring shape,
And two frictional members connected to the inside of the end guide and facing each other,
Wherein the friction member is electrically connected to the control unit and is magnetized when the current is applied to the control unit so that the guide wire is rubbed to thereby decelerate the lift vehicle. Wire type elevating device.
6. The apparatus of claim 5,
A speed sensor attached to the elevating truck to detect a descending speed of the elevating truck;
A comparator for periodically receiving the descending speed information of the elevating truck from the speed sensor and transmitting the speed exceeding information when the descending speed of the elevating truck exceeds a predetermined speed;
An alarm device for generating an alarm that the occupant can recognize when the speed excess information is received;
A speed reducer for frictionally contacting the friction member with the guide wire by applying an electric current to the friction member when the speed excess information is received; And
A breaker for shutting down the power of the first lifting unit when the descending speed information received after the start of the speed reducer exceeds a preset speed; Wherein the wire-type elevating device includes:
7. The apparatus of claim 6,
Inside the lift truck
A key pad provided with buttons related to the ascending, descending, and speed of the lifting carriage;
A display for displaying a current state of the elevator car; And
A radio transceiver provided inside the lift truck; Lt; / RTI >
Wherein the current state includes a speed, a load, and a current height of the elevator car.
[2] The apparatus of claim 1,
A plurality of first wires fixedly coupled to the upper portion of the lifting and lowering carriage and supporting the lifting and lowering carriage upward;
A plurality of first wire drums for winding up or releasing the first wires for vertical movement of the lifting truck;
A plurality of first motors for rotationally driving the first wire drums; And
A first pivot shaft for transmitting a turning force and a pivoting direction generated by the first motor to the first wire drum; Wherein the wire-type elevating device includes:
9. The method of claim 8,
Wherein each of the first and second lift trucks is provided in each of the regions having the same moment at the center of gravity of the lift truck,
Wherein the number of the first wires is an even number.
delete The method of claim 1, wherein the second wire
A lifting / lowering mechanism that is connected to an upper center of gravity of the lifting truck,
A power cable for supplying power to the control unit; And
A signal cable for transmitting a control signal of the control unit or receiving an external signal; And a wire-type elevating device.
The motor drive device according to claim 1, wherein the second motor
Wherein the motor is a torque motor.
(A) the speed sensor periodically senses the descending speed of the lifting truck;
(B) comparing the descending speed with a predetermined speed when the control unit receives the descending speed, and transmitting the speed exceeding information if the descending speed exceeds the predetermined speed;
(C) when the control unit receives the speed-exceeding information, an alarm is generated by the alarm unit, and the speed reducer decelerates the descending speed of the lifting vehicle;
(D) when the control unit determines that the descending speed of the elevating truck transmitted from the speed sensor exceeds the preset speed, the control unit interrupts the power of the first elevating unit; And
(E) blocking the power of the second lifting unit by the control unit; Lt; / RTI >
In the step (E), the second lift part
A second wire fixedly coupled to an upper portion of the elevating carriage and supporting the elevating carriage upward;
A second wire drum for winding or releasing the second wire and maintaining the state of the second wire in a loose state;
A second motor for rotating the second wire drum and stopping the rotation when a tensile force higher than a predetermined tension is applied to the second wire; And
A second pivot shaft for transmitting a turning force and a pivoting direction generated by the second motor to the second wire drum; And a wire-type lifting device falling prevention method.
[14] The method of claim 13, wherein in the step (C)
And the control unit applies magnetization to the friction member to magnetize the friction member so that the friction member and the guide wire rub against each other by a force generated against the guide wire to decelerate the lift rails. A method of preventing falling of a wire type elevating device.
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