KR102669835B1 - Vertical conveying apparatus with wedge type fall arrester - Google Patents

Abstract

A vertical transport device having a wedge-type fall prevention device is disclosed. A vertical transport device equipped with a wedge-shaped fall prevention device according to the present invention includes a mast on which a lifting and lowering carriage on which logistics goods are seated is connected to enable up/down movement; A break detection sensor unit that detects breakage of the wire or belt connected to the raising and lowering carriage; and is provided on the lifting and lowering carriage, between a normal situation where the lifting and lowering carriage can move up/down and an emergency situation preventing the lifting and lowering carriage from falling when the wire or belt connected to the lifting and lowering carriage is broken. It includes a fall prevention unit that is provided to enable operation. The fall prevention unit is provided toward the opposing surface of the mast opposite to the elevating and lowering carriage, but the gap with the opposing surface of the mast narrows toward the top along the longitudinal direction of the mast. A fall prevention operation that includes a wedge-forming guide block that is inclined so as to support the device, and a fall-prevention member that is disposed between the wedge-forming guide block and the mast and is inserted between the wedge-forming guide block and the mast in an emergency situation to prevent the lifting and lowering carriage from falling. module; And it includes a fall prevention drive module that is connected to the fall prevention member and provides driving force for the fall prevention member to operate.

Description

Vertical conveying apparatus with wedge type fall arrester}

The present invention relates to a vertical transport device equipped with a wedge-type fall prevention device. More specifically, the present invention relates to a vertical transport device having a wedge-type fall prevention device. More specifically, it prevents the lifting and lowering carriage from falling even if an emergency situation such as a wire or belt break occurs, thereby preventing product damage or safety. It relates to a vertical transport device equipped with a wedge-type fall prevention device that can prevent accidents from occurring.

Logistics was originally an abbreviation for physical distribution, but its meaning has been expanded to mean all activities that create the temporal and spatial value of cargo.

Recently, as online distribution has rapidly increased, the volume of cargo is increasing, and the need for an efficient logistics system is increasing with the revitalization of the cargo distribution industry.

In other words, increasing the time value and spatial value of cargo appears to be the competitiveness of corporate management, and logistics management in corporate management is recognized not only as a means of reducing costs, but also as a differentiated strategic method of improving competitiveness through maximizing customer service. . Therefore, there is a need to speed up logistics processing by improving the efficiency of the logistics system.

To speed up logistics processing, an automatic warehouse loading system is being introduced as an example of a logistics system.

The automatic warehouse loading system includes a loading tower composed of multiple levels and multiple rows of racks that provide loading space for logistics products, a stacker crane that moves logistics products to the desired loading space of the rack, and a moving system that the stacker crane moves. Equipped with a moving rail, the lifting and lowering carriage is moved to the row of the desired rack by the traveling motion of the stacker crane, and moved to the layer of the desired rack by the lifting and lowering motion of the stacker crane, and by the forking motion of the stacker crane. It serves to load or transfer logistics goods to the loading space of the rack.

In addition, in another example of a logistics system, high-speed lifters that vertically transport at high speeds (100 m/min or more) are currently being used to speed up logistics processing.

These logistics systems are equipped with stacker cranes or lifters that can carry out the loading or unloading of logistics goods at multiple levels at different heights.

Hereinafter, a device that can carry out the loading or unloading of goods on multiple floors at different heights, such as a stacker crane in an automatic warehouse loading system or a lifter in a high-speed lifter logistics system, will be defined as a vertical transport device. do.

All of these vertical transport devices can carry out the loading and unloading of logistics goods on multiple floors at different heights while raising and lowering the elevating carriage with a wire or belt.

On the other hand, in the vertical transport device, there is a risk that the lifting carriage may fall freely when the wire or belt connected to the lifting carriage breaks. In this way, if the lifting carriage falls, a safety accident may occur and the goods may be damaged. Therefore, for safety or to prevent damage to logistics goods, it is necessary to install a fall prevention device in the vertical transport device that can stop the lifting and lowering carriage even if an emergency situation occurs in which the lifting and lowering carriage falls.

However, fall prevention devices applied to conventional vertical transport devices are large in size and require a relatively large installation space.

Therefore, there is a problem in that the fall prevention device cannot be applied to a vertical transport device where the installation space for installing the fall prevention device is narrow or limited.

Republic of Korea Patent Publication No. 10-2008-0077372 (2008.08.22.)

The problem that the present invention aims to solve is to prevent the product from being damaged or a safety accident by preventing the lifting and lowering carriage from falling even if an emergency situation such as a wire or belt breaks occurs, and the size is smaller than before. Since it can be installed in a narrower space than before, it can also be applied to vertical transport devices where the fall prevention device of the prior art cannot be applied due to narrow or limited installation space, and is equipped with a wedge-type fall prevention device. The device is provided.

According to one aspect of the present invention, a mast on which a lifting and lowering carriage on which logistics goods are seated is connected to enable up/down movement; A break detection sensor unit that detects breakage of a wire or belt connected to the raising and lowering carriage; and is provided on the lifting and lowering carriage, and prevents the lifting and lowering carriage from falling under normal circumstances in which the lifting and lowering carriage can move up and down, and when the wire or belt connected to the lifting and lowering carriage is broken. It includes a fall prevention unit that is provided to enable operation during an emergency situation, wherein the fall prevention unit is provided toward an opposing surface of the mast facing the raising and lowering carriage, and moves upward along the longitudinal direction of the mast. A wedge-forming guide block is provided at an angle to narrow the gap between the mast and the opposing surface, and is disposed between the wedge-forming guide block and the mast to be sandwiched between the wedge-forming guide block and the mast in the event of an emergency. A fall prevention operation module including a fall prevention member that prevents the lowering carriage from falling; And a vertical transport device having a wedge-type fall prevention device can be provided, characterized in that it includes a fall prevention drive module connected to the fall prevention member and providing a driving force for operating the fall prevention member.

The break detection sensor unit is electrically connected to the fall prevention unit, and when the break detection sensor unit detects a break in the wire or belt, the fall prevention unit operates in the emergency situation to prevent the fall of the lifting and lowering carriage. It may further include a fall prevention control unit that controls the fall prevention unit to do so.

The fall prevention drive module is a fall prevention drive motor that operates by an electrical signal from the fall prevention control unit, and the fall prevention member is moved by the fall prevention drive motor to prevent the lifting and lowering carriage from falling.

The fall prevention member is connected to the fall prevention drive motor and can move forward and backward by the fall prevention drive motor, and is a fall prevention roller disposed between the wedge forming guide block and the mast, and the fall prevention control unit is , when the break detection sensor unit detects breakage of the wire or belt, the fall prevention roller is moved in a direction where the gap between the mast and the wedge forming guide block is narrowed between the wedge forming guide block and the mast. The fall prevention drive motor can be controlled to prevent the lifting and lowering carriage from falling by being fitted.

When the breakage detection sensor unit detects breakage of the wire or belt, the fall prevention control unit moves the fall prevention roller in a direction where the gap between the mast and the wedge forming guide block narrows to guide the wedge forming guide. It is inserted between the block and the mast to operate the fall prevention drive motor to prevent the lifting and lowering carriage from falling, and then the operation of the fall prevention drive motor can be stopped after a predetermined time.

The fall prevention operation module is connected to the fall prevention drive motor on the opposite side of the wedge forming guide block where the fall prevention roller is located, and is electrically coupled so that at least a portion of it can move forward and backward by the operation of the fall prevention drive motor. cylinder; and a roller support bracket coupled to the electric cylinder to move forward and backward integrally when at least a portion of the electric cylinder moves forward and backward, and to which the fall prevention roller is coupled to support the fall prevention roller, As the roller support bracket moves forward and backward, the fall prevention roller can move forward and backward.

The electric cylinder includes a cylinder rod that moves forward and backward by the fall prevention drive motor; A roller moving block including a first roller moving block coupled to an end of the cylinder rod, and a second roller moving block disposed in a direction transverse to the first roller moving block and parallel to the cylinder rod and coupled to a roller support bracket. ; and a cylinder housing accommodating at least a portion of the cylinder rod, wherein the cylinder housing may be provided with an LM guide and the second roller moving block may be provided with an LM block.

The break detection sensor unit includes a limit switch coupled to the raising and lowering carriage; And it may include a switch contact module that maintains contact with the limit switch by the wire or belt in the normal situation, but releases contact with the limit switch when the wire or belt is broken.

The switch contact module includes a carriage plate provided on the raising and lowering carriage; A compression rod connected to the wire or belt and installed through the carriage plate; A compression spring compressed by the carriage plate and the compression rod; And it may include a contact housing provided below the carriage plate to accommodate the compression spring and contact the limit switch.

The switch contact module includes a shackle coupled to the upper end of the compression rod and coupled to the wire or belt; And it may further include a nut coupled to the compression rod at the lower part of the contact housing to contact and support the contact housing while compressing the compression spring in the normal situation.

The fall prevention unit is a pneumatic fall prevention unit that operates with pneumatic pressure, and when the break detection sensor unit detects a break in the wire or belt, the pneumatic fall prevention unit enters the emergency situation to prevent the fall of the raising and lowering carriage. It may further include a fall prevention pneumatic pressure providing unit that provides pneumatic pressure to the pneumatic fall prevention unit to operate.

The fall prevention driving module is a pneumatic cylinder that operates by the pneumatic pressure of the fall prevention pneumatic supply unit, and the fall prevention operation module is driven by the pneumatic cylinder to prevent the lifting and lowering carriage from falling.

The fall prevention member is connected to the piston rod of the pneumatic cylinder and can move forward and backward by the piston rod, and is disposed between the wedge-forming guide block and the mast and coupled to the wedge-forming guide block to enable relative movement. It is a fall prevention wedge block, and the fall prevention pneumatic supply unit is configured to narrow the gap between the mast and the wedge forming guide block by using the fall prevention wedge block when the break detection sensor unit detects breakage of the wire or belt. By moving it in this direction, it can be inserted between the wedge forming guide block and the mast to provide pneumatic pressure to the pneumatic cylinder to prevent the lifting and lowering carriage from falling.

The fall prevention pneumatic pressure providing unit includes a pneumatic pump that provides pneumatic pressure to the pneumatic cylinder; And it may include a direction control valve that controls the direction of pneumatic pressure provided to the pneumatic cylinder for forward and backward movement of the fall prevention wedge block.

The fall prevention pneumatic pressure providing unit may further include a rapid exhaust valve provided in the pneumatic pipe between the pneumatic cylinder and the direction control valve to rapidly exhaust the pneumatic pressure of the pneumatic cylinder.

The fall prevention operation module is coupled to the raising and lowering carriage and further includes a coupling plate to which the wedge forming guide block is coupled, and the wedge forming guide block is provided with a guide rail that guides the movement of the fall prevention wedge block. In addition, the fall prevention wedge block may be provided with a cam follower that moves along the guide rail.

The wedge forming guide block may be provided with a urethane pad on a surface that contacts the opposing surface of the mast.

The break detection sensor unit is coupled to the raising and lowering carriage, and is pneumatically connected to the direction control valve to maintain contact with the wire or belt in the normal situation and to operate the direction control valve when the wire or belt is broken. It may be a break detection trigger valve that changes the direction of pneumatic pressure by operating it to advance the fall prevention wedge block.

The break detection trigger valve includes a sensing compression lever that is in a folded state when in contact with the wire or belt and in an unfolded state when it is released from contact with the wire or belt; And when the sensing compression lever is in an unfolded state in the wire or belt due to the breakage of the wire or belt, the breakage of the wire or belt is sensed and pneumatic pressure is provided to the direction control valve so that the direction control valve operates the fall prevention wedge. The block may include a trigger valve body that switches the direction control valve to a state in which forward pneumatic pressure is provided to the pneumatic cylinder.

Embodiments of the present invention can prevent the product from being damaged or a safety accident by preventing the lifting and lowering carriage from falling even if an emergency situation such as a wire or belt is broken, and are smaller than the conventional one. Since it can be installed even in narrow spaces, it can also be applied to vertical transport devices where conventional fall prevention devices cannot be applied due to narrow or limited installation space.

Figure 1 is a diagram schematically showing an automatic warehouse loading system to which a stacker crane equipped with an electric fall prevention device is applied as a vertical transport device equipped with a wedge-type fall prevention device according to an embodiment of the present invention.
Figure 2 is a perspective view showing a stacker crane equipped with the electric fall prevention device of Figure 1.
Figure 3 is a perspective view of the main parts for explaining the lifting and lowering carriage, up/down driving unit, and crane driving unit of the stacker crane of Figure 2.
Figure 4 is a schematic diagram of the interior of the lifting and lowering carriage of the stacker crane of Figure 2.
FIG. 5 is a diagram for explaining the loading and unloading part of the lifting and lowering carriage of the stacker crane of FIG. 2.
FIG. 6 is a diagram schematically showing a closed state in which the material storage space of the lifting and lowering carriage of the stacker crane of FIG. 2 is closed.
Figure 7 is a plan view schematically showing the interior of the fire prevention shutter module of the raising and lowering carriage of the stacker crane of Figure 2.
Figure 8 is a perspective view showing where the fall prevention unit and breakage detection sensor unit of the stacker crane of Figure 2 are arranged.
FIG. 9 is a perspective view showing area “A” in FIG. 8.
FIG. 10 is a front view showing area “C” in FIG. 9.
Figure 11 is a perspective view of the main part for explaining the breakage detection sensor unit in area "B" of Figure 8.
Figure 12 is a diagram for explaining the operation process of the fall prevention unit of the stacker crane of Figure 2.
Figure 13 is a side view of a logistics system including a lifter equipped with a pneumatic fall prevention device as a vertical transport device equipped with a wedge-type fall prevention device according to another embodiment of the present invention.
Figure 14 is a perspective view of the lifter of Figure 13.
Figure 15 is a perspective view of main parts for explaining the raising/lowering carriage and up/down driving unit of the lifter of Figure 14.
Figure 16 is a perspective view of main parts for explaining the raising and lowering carriage, pneumatic fall prevention unit, break detection sensor unit, and fall prevention pneumatic provision unit of the lifter of Figure 14.
FIG. 17 is a schematic perspective view illustrating the up/down driving unit of the lifter of FIG. 14.
Figure 18 is a schematic perspective view for explaining the up/down coupling of the up/down drive unit of the lifter of Figure 14.
Figure 19 is a plan view of area 'A' in Figure 16.
Figure 20 is a plan view of area 'B' in Figure 16.
Figure 21 is a schematic pneumatic circuit diagram of the pneumatic fall prevention unit, break detection sensor unit, and fall prevention pneumatic provision unit of the lifter of Figure 14.

In order to fully understand the present invention, its operational advantages, and the objectives achieved by practicing the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. However, in explaining the present invention, descriptions of already known functions or configurations will be omitted to make the gist of the present invention clear.

Figure 1 is a diagram schematically showing an automatic warehouse loading system to which a stacker crane equipped with an electric fall prevention device is applied as a vertical transport device equipped with a wedge-type fall prevention device according to an embodiment of the present invention. The vertical transport device according to an embodiment of the present invention is a stacker crane. Hereinafter, the case where the vertical transport device is a stacker crane will be described.

As shown in this drawing, the automatic warehouse loading system using a stacker crane equipped with an electric fall prevention device according to this embodiment includes a storage unit (2), a stacker crane (1) equipped with an electric fall prevention device, Includes a fire extinguishing unit (3) and a system control unit (not shown).

The storage unit 2 is provided with a plurality of shelves 2a on which logistics goods are loaded. The storage units 2 are arranged to face each other with the stacker crane 1 provided with the electric fall prevention device according to this embodiment interposed therebetween.

The shelves 2a are arranged in multiple numbers horizontally and vertically. This shelf 2a may be provided in the shape of a square box with an open front. However, the scope of the present invention is not limited to this, and the shelf 2a may be provided in various shapes.

The storage unit 2 of this embodiment may be equipped with a shelf fire detection sensor (not shown) that detects whether the logistics goods loaded on the shelf 2a are on fire. This shelf fire detection sensor (not shown) is coupled to the upper inner wall of the shelf 2a and may be a smoke detection sensor that detects smoke. Information detected by a shelf fire detection sensor (not shown) may be transmitted to a system control unit (not shown).

And the stacker crane 1 equipped with an electric fall prevention device according to this embodiment is arranged adjacent to the storage unit 2 to load and withdraw logistics goods from each shelf 2a. In addition, the stacker crane 1 equipped with an electric fall prevention device according to this embodiment removes the goods from the shelf 2a and primarily extinguishes the goods when a fire occurs in the goods loaded on the shelf 2a. ) may be configured to do so. However, the scope of the present invention is not limited to this, and the primary digestion component may be omitted.

Figure 2 is a perspective view showing a stacker crane equipped with the electric fall prevention device of Figure 1, and Figure 3 illustrates the raising and lowering carriage, up/down drive unit, and crane driving unit of the stacker crane of Figure 2. FIG. 4 is a schematic diagram of the interior of the lifting and lowering carriage of the stacker crane of FIG. 2, and FIG. 5 is a diagram illustrating the loading and unloading portion of the logistics product of the lifting and lowering carriage of the stacker crane of FIG. 2. 6 is a diagram schematically showing the closed state of the logistics goods accommodation space of the lifting and lowering carriage of the stacker crane of FIG. 2, and FIG. 7 is a view showing the interior of the fire prevention shutter module of the lifting and lowering carriage of the stacker crane of FIG. 2 This is a floor plan that briefly shows.

As shown in these drawings, the stacker crane 1 equipped with an electric fall prevention device according to this embodiment includes a mast 100, a lifting and lowering carriage 200, and an up/down operation. It includes a unit 300, a crane driving unit 400, a fall prevention unit 500, a break detection sensor unit 600, and a fall prevention control unit (not shown).

The mast 100 is a structure that forms the frame of the stacker crane 1 and is arranged long in the vertical direction, and the raising and lowering carriage 200, on which the logistics goods are seated, is connected to it so that it can move up/down. do. That is, the raising and lowering carriage 200 is supported on the mast 100 and can move in the vertical direction.

And on one side of the mast 100, a ladder unit 110 is provided along the longitudinal direction of the mast 100. The ladder unit 110 is a structure for movement of workers performing maintenance, etc.

Next, the lifting and lowering carriage 200 is coupled to the up/down driving unit 300, and a logistics product receiving space (S) is formed inside, and logistics products enter and exit the logistics product receiving space (S). It is coupled to the lifting and lowering carriage main body 210, which has an opening (H) for entry and exit on the side, and the lifting and lowering carriage main body 210, and transports the goods into the goods receiving space (S). A fire prevention shutter that is mounted on the logistics goods inlet/output unit 220, which allows the goods to be brought in or withdrawn from the goods storage space (S), and the elevating/lowering carriage main body 210, and opens and closes the entry/exit opening (H). A fire extinguishing sprayer 240 that is coupled to the module 230 and the lowering carriage main body 210 and sprays fire extinguishing powder into the logistics product storage space (S), and the lowering carriage main body part. A logistics product detection sensor 250 is mounted on (210) and detects the logistics products accommodated in the logistics product storage space (S), and is coupled to the inner wall of the lifting and lowering carriage main body 210 and includes a logistics product detection sensor ( 250) is mounted on the sensor fire cover 260, which shields the sensor and has a sensing cutout 262, and is mounted on the lifting and lowering carriage main body 210 to determine whether the logistics goods contained in the logistics goods storage space (S) are on fire. It includes a fire detection sensor 270 for the raising and lowering carriage that detects.

The lifting and lowering carriage body 210 is coupled to the up/down driving unit 300 and is moved in the vertical direction by the up/down driving unit 300. In this embodiment, the lifting carriage main body 210 is formed in the shape of a square box with a hollow interior, and a logistics product storage space S is provided inside the lifting and lowering carriage main body 210. is formed

In addition, openings H for entry and exit are formed on both side walls of the main body portion 210 of the lifting and lowering carriage to allow goods to enter and exit the goods receiving space S.

In addition, a through hole (not shown) through which a roll-type screen shutter unit 233, which will be described later, passes may be formed in the upper wall of the raising and lowering carriage main body 210.

The logistics product input/output unit 220 is coupled to the lifting/lowering carriage main body 210. This logistics product input/output unit 220 allows the logistics product to be introduced into or withdrawn from the logistics product receiving space (S).

As shown in detail in FIG. 5, the logistics product input/output unit 220 according to this embodiment includes a support plate 221 that is provided to enable input/output of the logistics product into the logistics product storage space (S) and supports the logistics product, and a support It includes support plate sliding modules 222 and 223 that are coupled to the plate 221 and slide the support plate 221 toward the shelf 2a.

The support plate sliding modules 222 and 223 include a first sliding plate 222 that moves in close contact with one side of the support plate 221 and a second sliding plate 222 that is relatively movable with respect to the first sliding plate 222. Includes a sliding plate (223).

The support plate 221 is provided so that it can be pulled in and out of the logistics product storage space (S) and supports the logistics products.

The support plate sliding modules 222 and 223 are coupled to the support plate 221 and slide the support plate 221 toward the shelf 2a, and the first sliding module moves in close contact with one side of the support plate 221. It includes a plate 222 and a second sliding plate 223 that is coupled to the first sliding plate 222 so as to be relatively movable.

In this way, the support plate sliding modules 222 and 223 according to this embodiment slide the support plate 221 toward the shelf 2a through the first sliding plate 222 and the second sliding plate 223. Therefore, the distance at which the support plate 221 can be moved toward the shelf 2a can be increased, and logistics goods can be efficiently stored on the shelf 2a even on the loading tower 100 provided with a plurality of shelves 2a. Alternatively, it can be shipped from the shelf (2a).

The fire prevention shutter module 230 is mounted on the main body portion 210 of the raising and lowering carriage. This fire prevention shutter module 230 opens and closes the entrance opening (H).

As shown in detail in FIG. 7, the fire prevention shutter module 230 according to this embodiment includes a shutter module housing portion 231 coupled to the raising and lowering carriage main body portion 210, and a shutter module housing portion. A take-up roll unit 232 rotatably coupled to (231), and a roll-type screen shutter that opens and closes the entry/exit opening (H) by unfolding or being wound around the take-up roll unit 232 according to forward and reverse rotation of the take-up roll unit 232. The winding roll part is rotatably coupled to the unit 233 and the shutter module housing part 231 and is connected to the winding roll part 232 so that the winding roll part 232 is rotated in the direction in which the roll-type screen shutter part 233 is unfolded. It includes an elastic pressing part 234 that elastically presses the winding roll part 232 and a winding roll rotating part (not shown) connected to the winding roll part 232 to rotate the winding roll part 232.

The shutter module housing portion 231 is coupled to the raising and lowering carriage body portion 210. This shutter module housing portion 231 is shaped in a 'ㄷ' shape with an open bottom. Inside this shutter module housing portion 231, a winding roll portion 232, a roll-type screen shutter portion 233, and an elastic pressing portion 234 are disposed.

The winding roll unit 232 is rotatably coupled to the shutter module housing unit 231. The roll-type screen shutter unit 233 is wound around this winding roll unit 232. The winding roll rotating unit (not shown) is connected to the winding roll unit 232 and rotates the winding roll unit 232.

The roll-type screen shutter unit 233 opens or closes the entry/exit opening (H) by unfolding or being wound around the winding roll unit 232 as the winding roll unit 232 rotates forward or backward.

The elastic pressing portion 234 is rotatably coupled to the shutter module housing portion 231. This elastic pressing unit 234 is connected to the winding roll unit 232 and elastically presses the winding roll unit 232 so that the winding roll unit 232 rotates in the direction in which the roll-type screen shutter unit 233 is unfolded.

In this embodiment, the elastic pressing part 234 is made of a torsion spring. This elastic pressing part 234 is connected to the winding roll part 232 and a chain 235 to apply rotational force to the winding roll part 232.

The winding roll rotating unit (not shown) is connected to the winding roll unit 232 and rotates the winding roll unit 232. This winding roll rotating unit (not shown) is mounted on the raising/lowering carriage main body 210 or the shutter module housing 231.

In this way, an elastic pressing unit is connected to the winding roll unit 232 according to this embodiment and elastically presses the winding roll unit 232 so that the winding roll unit 232 rotates in the direction in which the roll-type screen shutter unit 233 is unfolded. By providing (234), the elastic force of the elastic pressing portion 234 can be added to the rotational force applied by the winding roll rotating portion (not shown) in the process of lowering the roll-type screen shutter portion 233 to unfold, and Accordingly, in the process of lowering the roll-type screen shutter unit 233, the lowering is not restricted by foreign substances, etc. and can be completely lowered to close the logistics product storage space (S).

The fire extinguishing injection unit 240 is coupled to the raising and lowering carriage main body 210. This fire extinguishing spray unit 240 sprays fire extinguishing powder into the logistics product accommodation space (S). There are six fire extinguishing injection units 240 according to this embodiment.

As shown in detail in FIG. 4, the logistics product detection sensor 250 is mounted on the inner wall of the main body portion 210 of the raising and lowering carriage. This logistics product detection sensor 250 detects the logistics products accommodated in the logistics product storage space (S). In this embodiment, the logistics product detection sensor 250 may be comprised of a proximity sensor, a photo sensor, etc. Information detected by the logistics product detection sensor 250 is transmitted to a system control unit (not shown).

The fire cover for the sensor 260 is coupled to the inner wall of the main body portion 210 of the lifting and lowering carriage to shield the logistics product detection sensor 250. A cutting hole 262 for sensing is formed in the fire cover 260 for the sensor.

As such, the raising and lowering carriage 200 according to this embodiment is a fireproof cover for a sensor that shields the logistics product detection sensor 250 but has a sensing cutout hole 262 that partially exposes the logistics product detection sensor 250. By providing (260), it is possible to prevent the logistics product detection sensor 250 from being damaged by a fire occurring in the logistics product accommodated in the logistics product storage space (S).

The fire detection sensor 270 for the raising and lowering carriage is mounted on the main body 210 of the raising and lowering carriage. The fire detection sensor 270 for the raising and lowering carriage detects whether the logistics product contained in the logistics product storage space (S) is on fire. The fire detection sensor 270 for the raising and lowering carriage according to this embodiment consists of a smoke detector (not shown) and a thermal imaging camera. Information detected by the fire detection sensor 270 for the raising and lowering carriage is transmitted to the system control unit (not shown).

Meanwhile, the raising and lowering carriage main body 210 is provided with a lower fire partition 211 that shields the driving unit (not shown) for the in-and-out unit connected to the logistics product in-and-out unit 220. In the lower area of the lifting and lowering carriage main body 210, a driving unit (not shown) for the delivery and withdrawal unit that transmits driving force to the delivery and withdrawal unit 220, which is connected to the delivery and withdrawal unit 220, is disposed. , the lower fire partition 211 shields the driving unit (not shown) for the incoming and outgoing unit to prevent the driving unit (not shown) for the incoming and outgoing unit from being damaged by a fire occurring in the logistics goods accommodated in the logistics product storage space (S). .

In addition, the raising and lowering carriage main body 210 is provided with an upper fire partition 212 disposed in the upper corner area of the logistics product storage space (S). The upper fire partition 212 shields the clip detection sensor (not shown) or power moler (not shown) disposed at the upper edge of the logistics product accommodation space (S) to prevent damage to the logistics products accommodated in the logistics product accommodation space (S). Prevents the clip detection sensor (not shown) or power moler (not shown) from being damaged by a fire.

The up/down driving unit 300 is coupled to the mast 100. This up/down driving unit 300 is connected to the lifting and lowering carriage 200 and moves the lifting and lowering carriage 200 in the up/down direction.

In this embodiment, the up/down driving unit 300 includes a wire 310 (see FIG. 11) and a wire that rotates the wire 310, as shown in detail in FIGS. 2 and 3. A rotation driving unit 320 is provided. In this embodiment, the application of the wire 310 has been described in detail, but it will be natural that the scope of the present invention is not limited thereto and a belt may be applied instead of the wire.

The wire 310 is rotatably disposed within the mast 100 along the longitudinal direction of the mast 100 and is connected to the raising and lowering carriage 200. And the wire rotation driver 320 is mainly provided on the mast 100 to rotate the wire 310 in the forward and reverse directions. For example, when the wire 310 is rotated in the forward direction, the lifting and lowering carriage 200 can be operated up, and when the wire 310 is rotated in the reverse direction, the lifting and lowering carriage 200 can be operated down. there is. Of course, you could set it the other way around.

The crane traveling unit 400 travels along a traveling rail (not shown) disposed adjacent to the storage unit 2. In other words, the crane traveling unit 400 is provided to be able to travel back and forth on a traveling rail (not shown), so when storing logistics goods on the shelf 2a, it is necessary to efficiently stock the target logistics goods on a traveling rail (not shown). It can be moved to the location of the shelf 2a, and even when shipping the logistics product from the shelf 2a, it can efficiently move to the location of the logistics product to be shipped, thereby shortening the stocking and shipping time of the logistics product. In this embodiment, the crane traveling unit 400 includes a traveling drive motor 410 and a traveling roller (not shown).

When the stacker crane 1 according to this embodiment handles logistics goods, there is a possibility that an emergency situation such as damage to the wire 310 may occur.

Of course, such emergency situations do not occur frequently, but if an emergency situation occurs, the lifting and lowering carriage 200 may fall, damaging the goods or causing a safety accident. Therefore, this phenomenon must be prevented in advance, and the fall prevention unit 500 plays this role. The fall prevention unit 500 in this embodiment is smaller than the conventional one and can be installed in a narrower space than before, so the installation space is narrow or limited, so the fall prevention device of the prior art cannot be applied to the stacker crane. For example, it can be applied to stacker cranes for charging and discharging secondary batteries.

Figure 8 is a perspective view showing the position where the fall prevention unit and the breakage detection sensor unit of the stacker crane of Figure 2 are arranged, Figure 9 is a perspective view showing the "A" area of Figure 8, and Figure 10 is a perspective view of Figure 9. It is a front view showing the “C” area, Figure 11 is a perspective view of the main part for explaining the fracture detection sensor unit in the “B” area of Figure 8, and Figure 12 explains the operating process of the fall prevention unit of the stacker crane of Figure 2. This is a drawing for this purpose.

As shown in these drawings, the fall prevention unit 500 is provided on the elevating and lowering carriage 200, in a normal situation in which up/down movement of the elevating and lowering carriage 200 is possible, and in the elevating and lowering carriage 200. It is provided to enable operation in an emergency situation to prevent the lifting and lowering carriage 200 from falling when the wire connected to the carriage 200 is broken.

For this operation, the fall prevention unit 500 includes a fall prevention drive motor 510 and a fall prevention operation module 520 driven by the fall prevention drive motor 510.

The fall prevention drive motor 510 is coupled to the raising and lowering carriage 200 and operates by an electrical signal from a fall prevention control unit (not shown). The fall prevention control unit receives a signal when a break in the wire connected to the raising and lowering carriage 200 is detected from the break detection sensor unit 600 and operates the fall prevention drive motor 510 based on the signal.

The fall prevention operation module 520 is connected to the fall prevention drive motor 510. With this configuration, the fall prevention operation module 520 is driven according to the operation of the fall prevention drive motor 510 to prevent the lifting and lowering carriage 200 from falling.

As shown in detail in FIGS. 9 and 10, the fall prevention operation module 520, which is driven by the fall prevention drive motor 510 to prevent the lifting and lowering carriage 200 from falling, includes a wedge forming guide block 521. It includes a fall prevention roller (522), an electric cylinder (523), and a roller support bracket (528).

In this embodiment, the fall prevention operation module 520 is a wedge-type fall prevention operation module 520, and when the elevating and lowering carriage 200 falls, the fall prevention roller 522 of the fall prevention operation module 520 acts as a wedge. It has an operation process of entering in the direction and inserting into the opposing surface of the wedge forming guide block 521 and the mast 100 to stop the falling of the raising and lowering carriage 200.

Due to the new structure that implements this wedge method, the size can be made smaller than before. Furthermore, in this embodiment, the fall prevention drive motor 510 is operated electrically to make the size more compact, making it applicable to stacker cranes where the fall prevention device of the prior art cannot be applied due to narrow or limited installation space. can do.

The wedge forming guide block 521 of the fall prevention operation module 520 is coupled to the raising and lowering carriage 200 to implement a frame for wedge operation. The wedge-forming guide block 521 is provided toward the opposing surface of the mast 100, which faces the raising and lowering carriage 200, and the distance from the opposing surface of the mast 100 increases toward the top along the longitudinal direction of the mast 100. It is inclined to be narrow.

And the fall prevention roller 522 is disposed between the wedge forming guide block 521 and the opposing surface of the mast 100. In a normal situation, the fall prevention roller 522 may be arranged so as not to contact the opposing surface of the mast 100. Then, when an emergency situation occurs, the fall prevention drive motor 510 operates, whereby the fall prevention roller 522 moves in the wedge direction, that is, upward, and is inserted into the opposing surface of the wedge forming guide block 521 and the mast 100. do. This prevents the lifting and lowering carriage 200 from falling.

An electric cylinder 523 is provided to move the fall prevention roller 522 in the wedge direction, that is, upward. In this embodiment, the electric cylinder 523 is connected to the fall prevention drive motor 510 on the side opposite to the wedge forming guide block 521 where the fall prevention roller 522 is located, and is connected to the fall prevention drive motor 510 by the operation of the fall prevention drive motor 510. At least part of the cylinder rod 524, which will be described later, moves forward, and the fall prevention roller 522 connected to the cylinder rod 524 of the electric cylinder 523 moves in the wedge direction. Accordingly, when the fall prevention roller 522 is inserted between the wedge forming guide block 521 and the mast 100, the lifting and lowering carriage 200 is prevented from falling.

This electric cylinder 523 includes a cylinder rod 524 that moves forward and backward by the fall prevention drive motor 510, a roller moving block 525 coupled to the end of the cylinder rod 524, and a cylinder rod 524. ) includes a cylinder housing 526 that accommodates at least a portion of the.

And the roller moving block 525 is a first roller moving block 525a coupled to the end of the cylinder rod 524, and is arranged in a direction transverse to the first roller moving block 525a and parallel to the cylinder rod 524. It includes a second roller moving block (525b).

In this embodiment, an LM guide is provided in the cylinder housing 526 and an LM block is provided in the second roller moving block 525b, so that the LM block can move forward along the LM guide.

With this configuration, when the fall prevention drive motor 510 operates, the cylinder rod 524 moves forward, and thereby the first roller moving block 525a moves forward. When the first roller moving block 525a moves forward, the second roller moving block 525b integrated therewith also moves forward. When the second roller moving block 525b moves forward, the roller support bracket 528 connected to it and the second roller moving block 525b are moved forward. The fall prevention roller 522, which is integrally connected, moves forward.

The roller support bracket 528 supports the fall prevention roller 522 on the opposite side of the electric cylinder 523 with the wedge forming guide block 521 interposed therebetween. The roller support bracket 528 is coupled to the second roller moving block 525b of the electric cylinder 523 so that it advances integrally when the cylinder rod 524 of the electric cylinder 523 moves forward. Accordingly, as the second roller moving block 525b moves forward and backward, the roller support bracket 528 moves forward and backward, and the fall prevention roller 522 also moves forward and backward.

Meanwhile, the break detection sensor unit 600 detects breakage of the wire 310 connected to the raising and lowering carriage 200. As shown in detail in FIG. 11, this break detection sensor unit 600 includes a limit switch 610 coupled to the raising and lowering carriage 200, and a switch contact module 620. The limit switch 610 is in contact with the switch contact module 620 in a normal situation, and in an emergency situation, the contact with the switch contact module 620 is released, thereby detecting the breakage of the wire 310.

Therefore, the switch contact module 620 is configured so that the contact surface with the limit switch 610 is maintained by the wire 310 in a normal situation, but when the wire 310 is broken, the contact surface is released from contact with the limit switch 610. do.

This switch contact module 620 includes a carriage plate 621 provided on the raising and lowering carriage 200, a compression rod 622 connected to the wire 310 and installed through the carriage plate 621, and a compression rod A shackle 623 coupled to the upper end of 622 and coupled to the wire 310, a compression spring (not shown) compressed by the carriage plate 621 and the compression rod 622, and the carriage plate 621. A contact housing 625 is provided at the bottom to accommodate a compression spring (not shown) and is in contact with the limit switch 610, and is coupled to the compression rod 622 at the bottom of the contact housing 625 to generate a compression spring (not shown) under normal circumstances. It includes a nut 626 that contacts and supports the contact housing 625 while compressing it.

With this configuration, when the compression rod 622 is connected to the wire 310, the contact housing 625 is maintained in position by the tension of the wire 310, but when the wire 310 is broken, the compression spring (not shown) is The contact housing 625 is pushed downward, thereby releasing the contact between the contact housing 625 and the limit switch 610, and the limit switch 610 detects this and transmits a signal to the fall prevention control unit (not shown). I do it. That is, when the wire 310 is broken, the contact housing 625 is lowered, so the contact between the contact housing 625 and the limit switch 610 is released, so that the limit switch 610 is changed from, for example, ON to OFF. ) state, the breakage of the wire 310 is detected, and the signal is transmitted to the fall prevention control unit.

The fall prevention control unit is electrically connected to the break detection sensor unit 600 and the fall prevention unit 500, and when the break detection sensor unit 600 detects a break in the wire 310, the fall prevention unit 500 The fall prevention unit 500 is controlled to operate in an emergency situation to prevent the lifting and lowering carriage 200 from falling.

More specifically, when the break detection sensor unit 600 detects a break in the wire 310, the fall prevention control unit installs the fall prevention roller 522 between the mast 100 and the wedge forming guide block 521. By moving it in the direction of narrowing the gap, as shown in detail in FIG. 12, a fall prevention drive motor ( 510) is operated. This fall prevention control unit is provided on the outside of the stacker crane 1 and can be electrically connected to the fall prevention unit 500 and the break detection sensor unit 600, and is implemented as a PLC (Programmable Logic Controller) in this embodiment.

Furthermore, the fall prevention control unit operates the fall prevention drive motor 510 and then stops the operation of the fall prevention drive motor 510 after a predetermined time has elapsed.

Here, the reason for operating the fall prevention drive motor 510 to prevent the fall of the elevating and lowering carriage 200 and then stopping the operation of the fall prevention drive motor 510 after a predetermined time is because the fall prevention drive motor 510 This is to prevent overload.

In this way, to prevent the fall of the raising and lowering carriage 200, the fall prevention drive motor 510 is operated and the fall prevention roller 522 is inserted between the wedge forming guide block 521 and the mast 100 to prevent the fall. Even if the operation of the drive motor 510 is stopped, the raising and lowering carriage 200 no longer falls. However, if you continue to operate the fall prevention drive motor 510, the load will increase as time passes, so after a predetermined time, for example, several seconds to tens of seconds, after operating the fall prevention drive motor 510, the fall prevention drive motor ( 510) to stop the operation.

Hereinafter, the fall prevention function of the raising and lowering carriage 200 in an emergency situation of the stacker crane 1 of the automatic warehouse loading system according to this embodiment will be described.

Logistics goods are received on a warehousing conveyor (not shown) and delivered to a warehousing lifter (not shown). The warehousing lifter moves the goods up/down to the loading floor of the loading tower (not shown) where the goods will be loaded. At the loading floor of the loading tower where the logistics goods are to be loaded, the warehousing lifter delivers the goods to the warehousing home conveyor (not shown), and the warehousing home conveyor receives the goods from the warehousing lifter. And the stacker crane (1) loads the logistics goods (B) loaded on the receiving home conveyor (not shown).

The stacker crane 1 according to this embodiment loads the logistics products into the logistics product storage space and moves toward the shelf on which the logistics products are to be loaded among the plurality of shelves 2a provided in the loading tower. The stacker crane 1 is driven by a crane traveling unit 400 that travels on a traveling rail provided adjacent to the shelf 2a, and can be efficiently driven toward the shelf 2a on which logistics goods are to be loaded.

Meanwhile, in a general situation where the lifting and lowering carriage 200 supports the goods (C) and normally raises and lowers, the fall prevention unit 500 is operating in a normal situation, and the fall prevention roller 522 is first placed. It is located, more specifically, placed between the mast 100 and the wedge forming guide block 521, but the fall prevention roller 522 is not in contact with the mast 100. Therefore, the raising and lowering carriage 200 can be raised and lowered normally.

However, if the wire 310 that raises and lowers the raising and lowering carriage 200 is broken, the compression spring (not shown) of the switch contact module 620 of the break detection sensor unit 600 moves the contact housing 625 downward. It is pushed, and as a result, the contact between the contact housing 625 and the limit switch 610 is released, the state of the limit switch 610 is switched, and a signal is transmitted to the fall prevention control unit, and the fall prevention control unit uses a fall prevention drive motor ( 510) is controlled to operate in an emergency situation.

When the fall prevention drive motor 510 operates, the fall prevention roller 522 moves in a direction where the gap between the mast 100 and the wedge forming guide block 521 narrows, and eventually the wedge forming guide block 521 and It is inserted between the masts (100).

As a result, the falling of the elevating and lowering carriage 200 is stopped, and as a result, a fall is prevented. After a predetermined time has elapsed after operating the fall prevention drive motor 510, for example, several seconds to tens of seconds, the fall prevention drive motor ( 510) stops the operation.

When the fall prevention roller 522 is inserted between the wedge forming guide block 521 and the mast 100, even if the operation of the fall prevention drive motor 510 is stopped, the raising and lowering carriage 200 no longer descends and continues. If you operate the fall prevention drive motor 510, the fall prevention drive motor 510 may be overloaded, so to prevent this, after a predetermined time has elapsed after operating the fall prevention drive motor 510, the fall prevention drive motor 510 ) to stop the operation.

In this way, according to the stacker crane 1 equipped with an electric fall prevention device, which is an example of a vertical transport device equipped with a wedge-type fall prevention device according to this embodiment, an emergency situation such as a breakage of the wire 310 or a belt occurs. Even if this occurs, it is possible to prevent the product from being damaged or a safety accident by preventing the lifting and lowering carriage 200 from falling. However, since the size is smaller than before, it can be installed in a narrower space than before, so the installation space is narrow or It can also be applied to stacker cranes where fall prevention devices of the prior art cannot be applied due to limitations.

In the above-described embodiment, it was described in detail that a stacker crane equipped with an electric fall prevention device was applied to a multi-story automatic warehouse loading system, but of course, it can also be applied to a single-story automatic warehouse loading system.

Next, Figure 13 is a side view of a logistics system including a lifter equipped with a pneumatic fall prevention device as a vertical transport device equipped with a wedge-type fall prevention device according to another embodiment of the present invention. The vertical transfer device according to another embodiment of the present invention is a lifter. Hereinafter, the case where the vertical transfer device is a lifter will be described.

As shown, in this embodiment, logistics goods can be delivered to the receiving conveyor 30 and delivered to the lifter 10 equipped with a pneumatic fall prevention device according to an embodiment of the present invention. However, the warehousing conveyor 30 corresponds to an embodiment of the warehousing method of logistics goods, and the warehousing method of logistics goods can be provided in various ways, and the scope of the present invention is not limited to the shape of the warehousing conveyor 30.

The warehousing conveyor 30 transfers the goods to a lifter 10 equipped with a pneumatic fall prevention device according to an embodiment of the present invention, and is equipped with a pneumatic fall prevention device according to an embodiment of the present invention. The lifter (10) serves to transport logistics goods to the loading tower (50).

The loading tower 50 refers to a place where logistics products are loaded and stored, and a number of logistics products can be loaded in the loading tower 50 in multiple stages. However, the scope of the present invention is not limited thereto, and the loading tower 50 may have various shapes.

And the logistics goods described in this embodiment refer to the general term for goods that can be transported. Additionally, a stacker crane or a transfer shuttle 60 may be placed on each floor or each stage, and in this embodiment, the transfer shuttle 60 is placed.

Figure 14 is a perspective view of the lifter of Figure 13, Figure 15 is a perspective view of the main part for explaining the raising/lowering carriage and up/down drive unit of the lifter of Figure 14, and Figure 16 is a perspective view of the main part of the lifter of Figure 14. This is a perspective view of the main parts to explain the lifter's raising and lowering carriage, pneumatic fall prevention unit, break detection sensor unit, and fall prevention pneumatic supply unit.

As shown in these drawings, the lifter 10 equipped with a pneumatic fall prevention device according to an embodiment of the present invention includes a mast 1000, a lifting and lowering carriage 2000, and an up/down ) It includes a drive unit 3000, a pneumatic fall prevention unit 4000, a break detection sensor unit 5000, and a fall prevention pneumatic provision unit 6000.

The mast 1000 is connected to a lifting and lowering carriage 2000 on which logistics goods are placed so as to be able to move up/down. This mast 1000 may be provided between the receiving conveyor 30 and the loading tower 50, as shown in FIG. 1.

And, as shown in detail in FIGS. 14 and 15, the mast 1000 may include a lower frame 1001, a pair of columns 1002, and an upper frame 1004.

The lower frame 1001 increases the stability of the lifter 10 by contacting the ground and serves as a support structure so that the lifter 10 can transport goods at high speed.

Column 1002 is coupled to the lower frame 1001. In addition, the column 1002 may include a raising and lowering carriage traveling rail 1003 that is provided in the raising and lowering direction of the raising and lowering carriage 2000 and guides the movement of the raising and lowering carriage 2000. The raising and lowering carriage traveling rail 1003 allows the raising and lowering carriage 2000 to rise and fall stably at high speed.

A pair of columns 1002 are arranged to be spaced apart from each other with the raising and lowering carriage 2000 in between, and support the raising and lowering carriage 2000 on both sides to prevent the raising and lowering carriage 2000 from randomly shaking during high-speed raising and lowering. By acting as a support, stability can be increased when the raising and lowering carriage 2000 is raised and lowered at high speed.

That is, the column 1002 supports the raising and lowering carriage 2000 during high-speed transport of the logistics goods by the lifter 10, and the above-mentioned lower frame 1001 is in contact with the ground to raise and lower the logistics goods at high speed by the lifter 10. Increases the stability of the strong lifter (10).

The upper frame 1004 connects the pair of columns 1002 to each other and prevents the columns 1002 from shaking.

Meanwhile, logistics goods are placed on the raising and lowering carriage (2000). This raising and lowering carriage 2000 includes a carriage frame 2010, a carriage conveyor 2020, a guide roller 2030, a carriage traveling roller 2040, and a stopper 2050.

The carriage frame 2010 forms a skeleton, and the carriage conveyor 2020 is provided on the carriage frame 2010, and the carriage conveyor 2020 can directly support logistics goods. In this embodiment, the carriage conveyor 2020 has been described in detail as being provided in one stage, but the scope of the present invention is not limited thereto, and the carriage conveyor 2020 includes a first carriage conveyor coupled to the carriage frame 2010, It may be configured in multiple stages, including a second carriage conveyor that is spaced apart from the first carriage conveyor and coupled to the carriage frame 2010.

And the carriage traveling roller 2040 is coupled to the carriage frame 2010 and travels on the raising and lowering carriage traveling rail 1003 provided on the mast 1000.

Next, a plurality of guide rollers 2030 are provided in this embodiment. These guide rollers 2030 are coupled to the upper and lower ends of the carriage frame 2010, respectively, and guide the movement of the carriage frame 2010 so that the carriage frame 2010 does not deviate from the raising and lowering carriage traveling rail 1003.

Since the guide roller 2030 guides the movement of the carriage frame 2010 so that the carriage frame 2010 does not deviate from the raising and lowering carriage traveling rail 1003 when the carriage frame 2010 moves, the lifter according to this embodiment Even when the lifter 10 raises and lowers the goods at high speed, it has the effect of enabling the lifter 10 to raise and lower the goods at high speed in a stable and efficient manner.

At least one stopper 2050 is coupled to the upper and lower ends of the carriage frame 2010, and can stop the movement of the carriage frame 2010.

In this way, since the stopper 2050 can stop the movement of the carriage frame 2010, it is made of a material with buffering properties to alleviate the impact that may occur when the carriage frame 2010 is stopped due to high-speed lifting and lowering of logistics goods. It can be produced.

FIG. 17 is a schematic perspective view for explaining the up/down driving unit of the lifter of FIG. 14, and FIG. 18 is a raising/lowering coupling of the up/down driving unit of the lifter of FIG. 14. This is a schematic perspective view to explain.

Referring to these drawings and FIGS. 14 to 16 together, the up/down driving unit 3000 is provided on one side of the mast 1000, and moves the raising and lowering carriage 2000 up and down the mast 1000. Generates a driving force that moves up and down along the direction. In this embodiment, the up/down driving unit 3000 is provided at the lower part of the mast 1000, but the scope of the present invention is not limited thereto, and the up/down driving unit 3000 is provided at the lower part of the mast 1000. The unit 3000 may be provided in an appropriate portion of the mast 1000.

This up/down drive unit 3000 includes a lifting motor 3010, a belt 3020, a lowering reducer 3030, a lowering coupling 3040, and a lowering drive. Includes pulley 3050.

With this configuration, the up/down drive unit 3000 generates torque from the lift motor 3010, and the lift motor 3010 transmits the torque to the lift reducer 3030. The raising and lowering reducer (3030) amplifies the rotational force to generate a driving force for the lifting and lowering of the logistics product, and the lifting and lowering reducer (3030) transmits the driving force for the lifting and lowering of the logistics product to the lifting and lowering coupling (3040). (3040) transmits the driving force to the lifting and lowering drive pulley 3050, and the lifting and lowering driving pulley 3050 transmits the driving force to the belt 3020, and the belt 3020 connects the lifting and lowering carriage 2000 to the mast (1000). ) is raised and lowered in the vertical direction.

As described above, the raising and lowering motor 3010 can generate rotational force and transmit the rotational force to the lowering and lowering reducer 3030. In this embodiment, the lifting and lowering motor 3010 is provided as a servomotor.

The lifting reducer 3030 is combined with the lifting motor 3010, and reduces the rotational speed of the lifting motor 3010, amplifying the rotating force to transmit the driving force for lifting and lowering the logistics product to the lifting coupling 3040. It is a device.

In other words, the elevation reducer 3030 is a device that reduces the rotational speed of the elevation motor 3010 to a set reduction gear ratio, amplifies the rotational force, and transmits it to the elevation coupling 3040. In addition to the deceleration function, the Since it has a transmission function, it amplifies the rotational force by the reduction ratio, generates a driving force for the lifting and lowering of the logistics product, and transmits the driving force for the lifting and lowering of the logistics product to the lifting and lowering coupling (3040).

As shown in detail in FIGS. 17 and 18, the elevation coupling 3040 coupled to the elevation reduction reducer 3030 includes a first shaft connection hub 3041, a second shaft connection hub 3042, It may include a central disk 3043 and a link 3044.

The lifting and lowering coupling (3040) transmits the lifting and lowering driving force of the logistics product to the lifting and lowering driving pulley (3050) and corrects the misalignment phenomenon of each component.

Misalignment refers to a state in which two components are connected so that the center of the axis is not parallel, or a state in which the center of the axis is misaligned or assembled crookedly.

Misalignment of each component is a major cause of failure of the up/down drive unit 3000. Therefore, the up/down driving unit 3000 is susceptible to damage due to misalignment of each component of the up/down driving unit 3000, so more accurate alignment work is required. do.

The first axis connection hub (3041) is connected to the lifting and lowering reducer (3030), the second axis connecting hub (3042) is connected to the lifting and lowering drive pulley (3050), and the central disk (3043) is the first axis connecting hub. It is disposed between (3041) and the second shaft connection hub (3042), and at least one link (3044) is disposed on the central disk (3043).

With this configuration, the first shaft connection hub 3041 receives the driving force for lifting and lowering the goods from the lifting and lowering reducer 3030 and transmits it to the central disk 3043. The central disk 3043 transmits the lifting and lowering driving force to the second shaft connection hub 3042. The plurality of links 3044 disposed on the central disk 3043 are axially misaligned when the central disk 3043 transmits the lifting and lowering driving force from the first shaft connecting hub 3041 to the second shaft connecting hub 3042. (Shaft Misalignment) is corrected.

In this embodiment, two links 3044 are provided on opposing surfaces of the first axis connecting hub 3041 and two are provided on opposing surfaces of the second axis connecting hub 3042. In addition, two links 3044 provided on opposing surfaces of the first axis connecting hub 3041 and two links 3044 provided on opposing surfaces of the second axis connecting hub 3042 are arranged to be staggered on the central disk 3043. And the first shaft connection hub 3041 and the second shaft connection hub 3042 are provided with a link coupling portion 3045 that is coupled to the link 3044.

That is, the raising and lowering coupling 3040 applied to this embodiment corrects misalignment without restoring force. In this way, if there is no restoring force in the lifting and lowering coupling (3040) when transmitting the driving force from the lifting and lowering reducer (3030) to the lifting and lowering driving pulley (3050), the vibration generated by the lifting and lowering coupling (3040) is eliminated. , the stability of the up/down drive unit 3000 can be improved by eliminating the resonance phenomenon.

Meanwhile, as shown in detail in FIGS. 15 and 16, one end of the belt 3020 is coupled to the upper end of the raising and lowering carriage 2000, and the lower end is connected to the raising and lowering carriage via at least a portion of the mast 1000. (2000) can be combined with the lower part.

The structure of this belt 3020 is easier to install than the closed loop structure connected as one, simplifies work when installing and repairing the lifter 10, and increases the convenience of lifting and lowering goods through the lifter 10. do.

The teeth of the belt 3020 applied to this embodiment may be of a double helical type in which inclined teeth are symmetrically arranged along the center line in the longitudinal direction, and the lifting and lowering drive pulley 3050 may be provided in a structure that engages the teeth of the belt 3020.

If the teeth of the belt 3020 are provided in a double helical type like this, stability can be improved even when increasing the speed of raising and lowering the goods during high-speed raising and lowering of the goods.

That is, the double helical type teeth of the belt 3020 are provided as symmetrically inclined teeth along the center line in the longitudinal direction, so even when an external force is applied in one direction of the belt 3020, the belt 3020 maintains a symmetrically inclined tooth shape. (3020) can be prevented from leaving the lifting and lowering drive pulley (3050). Therefore, even when transporting goods at high speed, the belt 3020 can be prevented from being separated from the lifting and lowering drive pulley 3050 in a certain direction, and the shaking and separation of the goods can be prevented.

In addition, it not only prevents the shaking and separation of the logistics goods, but also prevents the belt 3020 itself from separating and shaking from the lifting and lowering drive pulley 3050 during high-speed transport of the goods, and prevents the belt 3020 from moving away or shaking. Damage to the belt 3020 itself, which may occur in the event of an occurrence, can be prevented.

In this way, by preventing damage to the belt 3020, the service life of the belt 3020 is increased, and the replacement cycle of the belt 3020 is increased, thereby increasing the maintenance efficiency of the lifter 10.

In addition, by preventing damage to the belt 3020, it prevents the generation of particles in the belt 3020, prevents damage to the lifter 10 due to the generation of particles in the belt 3020, and maintains the lifter 10. It has the effect of increasing efficiency.

FIG. 19 is a plan view of area 'A' of FIG. 16, FIG. 20 is a plan view of area 'B' of FIG. 16, and FIG. 21 shows the pneumatic fall prevention unit, rupture detection sensor unit, and fall prevention pneumatics of the lifter of FIG. 14. This is a schematic pneumatic circuit diagram of the unit.

Referring to these drawings and FIGS. 14 to 16 together, the pneumatic fall prevention unit 4000 is provided on the raising and lowering carriage 2000. This pneumatic fall prevention unit 4000 operates in a normal situation in which the up/down movement of the raising and lowering carriage 2000 is possible, and when the belt 3020 connected to the lifting and lowering carriage 2000 is broken, It is provided to enable operation in emergency situations to prevent the carriage 2000 from falling, and is operated by pneumatics.

The pneumatic fall prevention unit 4000 according to this embodiment is coupled to the raising and lowering carriage 2000 and includes a pneumatic cylinder 4010 that operates by the pneumatic pressure of the fall prevention pneumatic supply unit 6000, and a pneumatic cylinder 4010. It is connected to and includes a fall prevention operation module 4020 that is driven by a pneumatic cylinder 4010 to prevent the lifting and lowering carriage 2000 from falling.

With this configuration, when the pneumatic cylinder 4010 is driven in the set state in an emergency situation, the fall prevention operation module 4020 operates to prevent the lifting and lowering carriage 2000 from falling in an emergency situation.

The fall prevention operation module 4020 is connected to the elevating and lowering carriage 2000 and is provided toward the opposing surface of the mast 1000 opposite the elevating and lowering carriage 2000, and moves upward along the longitudinal direction of the mast 1000. The wedge-forming guide block 4021 is inclined so that the gap with the opposing surface of the mast 1000 gradually narrows, and is connected to the piston rod 4011 of the pneumatic cylinder 4010 to move forward and backward by the piston rod 4011. It is possible, and a fall prevention wedge block 4025 disposed between the wedge forming guide block 4021 and the mast 1000 is coupled to the elevating and lowering carriage 2000 and a coupling plate ( 4027).

In this embodiment, the fall prevention operation module 4020 is a wedge-type fall prevention operation module 4020, and when the elevating and lowering carriage 2000 falls, the fall prevention wedge block 4025 of the fall prevention operation module 4020 is It has an operation process of entering in the wedge direction and being inserted between the wedge forming guide block 4021 and the mast 1000 to stop the falling of the raising and lowering carriage 2000.

Due to the new structure that implements this wedge method, the size can be made smaller than before. Furthermore, in this embodiment, the pneumatic cylinder 4010 is operated pneumatically to make the size more compact, so it can be applied to lifters where the fall prevention device of the prior art cannot be applied due to narrow or limited installation space. .

Meanwhile, looking in detail at the structure in which this fall prevention operation module 4020 is coupled to the lifting and lowering carriage 2000, first, a coupling plate 4027 is coupled to the lifting and lowering carriage 2000, and a wedge is formed on this coupling plate 4027. The guide block 4021 is coupled. Here, the wedge forming guide block 4021 implements the frame of the wedge operation.

And the fall prevention wedge block 4025 is coupled to the wedge forming guide block 4021 so as to be relatively movable and is disposed between the mast 1000 and the wedge forming guide block 4021. In addition, in an emergency situation, when the piston rod (4011) of the pneumatic cylinder (4010) advances, the fall prevention wedge block (4025) moves in a direction where the gap between the mast (1000) and the wedge forming guide block (4021) narrows, creating a wedge. It has a structure that is sandwiched between the forming guide block 4021 and the mast 1000.

At this time, the wedge forming guide block 4021 is provided with a guide rail 4022 that guides the movement of the fall prevention wedge block 4025, and the fall prevention wedge block 4025 has a cam follower (4022) that moves along the guide rail 4022. 4026) is prepared.

In addition, the wedge forming guide block 4021 is provided with a urethane pad 4023 on the surface that contacts the opposing surface of the mast 1000 in an emergency situation.

On the other hand, when the fall prevention pneumatic supply unit 6000 detects the breakage of the belt 3020 in the break detection sensor unit 5000, the fall prevention wedge block 4025 is connected to the mast 1000 and the wedge forming guide block 4021. ) is moved in the direction where the gap between them narrows, and is inserted between the wedge-forming guide block 4021 and the mast 1000, thereby providing pneumatic pressure to the pneumatic cylinder 4010 to prevent the lifting and lowering carriage 2000 from falling.

This fall prevention pneumatic supply unit 6000 includes a pneumatic pump (not shown) that provides pneumatic pressure to the pneumatic cylinder 4010, and a pneumatic cylinder 4010 for forward and backward movement of the fall prevention wedge block 4025. A directional control valve 6010 that switches and controls the direction of pneumatic pressure, and a quick exhaust valve 6020 provided in the pneumatic pipe between the pneumatic cylinder 4010 and the directional control valve 6010 to rapidly exhaust the pneumatic pressure of the pneumatic cylinder 4010. ) includes.

With this configuration, the pneumatic pressure provided from the pneumatic pump is provided to the pneumatic cylinder 4010 by the direction control valve 6010. In normal situations, the direction control valve 6010 is connected to the piston rod 4011 of the pneumatic cylinder 4010. ) provides pneumatic pressure to maintain the backward state, and if the belt 3020 is broken, the direction control valve 6010 changes the direction of the pneumatic pressure to provide pneumatic pressure to advance the piston rod 4011 of the pneumatic cylinder 4010. It switches.

And the quick exhaust valve 6020 is in communication with the front area of the piston 4013 of the pneumatic cylinder 4010 and rapidly discharges the compressed air in the front area of the piston 4013 when the piston 4013 advances, thereby and the piston rod 4011 connected thereto can move forward rapidly. That is, the rapid exhaust valve 6020 increases the speed of the pneumatic cylinder 4010 to operate rapidly, allowing immediate response to the falling lifting and lowering carriage 2000.

Meanwhile, the break detection sensor unit 5000 detects breakage of the belt 3020 connected to the raising and lowering carriage 2000. When the break detection sensor unit (5000) detects a break in the belt (3020), the pneumatic fall prevention unit (4000) provides pneumatic pressure to operate in an emergency situation to prevent the fall of the lifting and lowering carriage (2000). (6000) provides pneumatic pressure to the fall prevention pneumatic pressure providing unit (6000).

In this embodiment, the break detection sensor unit 5000 is coupled to the raising and lowering carriage 2000, and is pneumatically connected to the direction control valve 6010 to maintain contact with the belt 3020 in a normal situation, but to maintain the belt ( When 3020) is broken, the contact is released and the state is changed to change the state of the directional control valve 6010. As a result of the state change of the directional control valve 6010, the direction of the pneumatic pressure is changed, thereby resulting in It may be a break detection trigger valve (5000) that advances the fall prevention wedge block (4025).

This break detection trigger valve 5000 is in a folded state when in contact with the belt 3020 and in an unfolded state when it is released from contact with the belt 3020, and the belt 3020 is broken by rupture of the belt 3020. When the sensing compression lever (5010) is in an unfolded state at (3020), the breakage of the belt (3020) is detected and pneumatic pressure is provided to the direction control valve (6010), so that the fall prevention wedge block (4025) is connected to the direction control valve (6010). It includes a trigger valve body 5020 that switches the direction control valve 6010 to a state where advancing pneumatic pressure is provided to the pneumatic cylinder 4010.

With this configuration, when the belt 3020 is broken, the sensing compression lever 5010 in contact with the belt 3020 is unfolded, and thereby the trigger valve body 5020 provides pneumatic pressure to the direction control valve 6010 to operate the direction control valve. (6010) is operated in an emergency situation, and as a result, the piston rod 4011 of the pneumatic cylinder 4010 advances, and as the piston rod 4011 of the pneumatic cylinder 4010 advances, the fall prevention wedge block 4025 also advances. I do it.

That is, the break detection trigger valve 5000 functions to operate the direction control valve 6010 so that the piston rod 4011 of the pneumatic cylinder 4010 advances due to its structure when the belt 3020 is broken.

Hereinafter, the operation of the lifter 10 equipped with the pneumatic fall prevention device according to this embodiment will be described as follows.

The lifter 10 equipped with a pneumatic fall prevention device according to this embodiment serves to raise and lower logistics goods.

In other words, the receiving conveyor 30 can transfer the logistics products to the lifter 10, and the lifter 10 can raise and lower the logistics products to the raising and lowering carriage 2000.

Meanwhile, the up/down driving unit 3000 generates driving force and transmits the driving force to the lifting and lowering carriage 2000, and the mast 1000 supports the lifting and lowering carriage 2000 and lifts and lowers the carriage. The carriage (2000) supports the goods and goes up and down.

In a general case where the lifting and lowering carriage (2000) supports the goods and moves up and down normally, the pneumatic fall prevention unit (4000) is in a normal situation, and at this time, the fall prevention wedge block (4025) maintains the initially placed position. That is, although it is disposed between the mast 1000 and the wedge forming guide block 4021, the fall prevention wedge block 4025 is not in contact with the mast 1000.

However, if the belt 3020 that raises and lowers the raising and lowering carriage 2000 is broken, the sensing compression lever 5010 in contact with the belt 3020 is unfolded, and as a result, the trigger valve body 5020 moves the direction control valve 6010. ) to provide pneumatic pressure to switch the direction control valve 6010, thereby causing the piston rod 4011 of the pneumatic cylinder 4010 to move forward. At this time, the rapid exhaust valve 6020 rapidly discharges the compressed air in the area in front of the piston 4013 when the piston 4013 moves forward, allowing the piston 4013 and the piston rod 4011 connected to it to move forward rapidly.

And as the piston rod 4011 of the pneumatic cylinder 4010 advances, the fall prevention wedge block 4025 also advances. In this way, the fall prevention wedge block 4025 advances in the direction where the gap between the mast 1000 and the wedge forming guide block 4021 narrows, and the urethane pad 4023 is formed between the wedge forming guide block 4021 and the mast 1000. ) is inserted in contact with the mast 1000, thereby stopping the descent of the raising and lowering carriage 2000, and consequently preventing a fall.

As described above, according to the lifter equipped with a pneumatic fall prevention device, which is another example of a vertical transport device equipped with a wedge-type fall prevention device according to the present embodiment, even if an emergency situation such as the belt 3020 is broken occurs, the lifting and lowering carriage It can prevent product damage or safety accidents by preventing falls, but its size is smaller than before, so it can be installed in narrower spaces than before, so the space available for installation is narrow or limited, preventing falls of conventional technology. It can also be applied to lifters who cannot apply the device.

In the above-described embodiment, which is another embodiment of the present invention, it has been described in detail that a belt is used to raise and lower the elevating and lowering carriage, but a wire may also be used as needed.

Although this embodiment has been described in detail with reference to the drawings, the scope of this embodiment is not limited to the drawings and description.

As such, the present invention is not limited to the described embodiments, and it is obvious to those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the present invention. Accordingly, such modifications or variations should be considered to fall within the scope of the claims of the present invention.

1: Stacker crane, a vertical transport device equipped with an electric fall prevention device
100: Mast 200: Raising and lowering carriage
300: Up/down driving unit 400: Crane driving unit
500: Fall prevention unit 600: Break detection sensor unit
10: Lifter, a vertical transport device equipped with a pneumatic fall prevention device
1000: Mast 2000: Raising and lowering carriage
3000: Up/down drive unit 4000: Pneumatic fall prevention unit
5000: Break detection sensor unit 6000: Fall prevention pneumatic provision unit

Claims (19)

A mast on which a lifting and lowering carriage on which logistics goods are placed is connected so as to be able to move up/down;
A break detection sensor unit that detects breakage of a wire or belt connected to the raising and lowering carriage;
It is provided on the lifting and lowering carriage, and prevents the lifting and lowering carriage from falling in a normal situation where up/down movement of the lifting and lowering carriage is possible, and when the wire or belt connected to the lifting and lowering carriage is broken. A fall prevention unit provided to enable operation during emergency situations; and
The break detection sensor unit is electrically connected to the fall prevention unit, and when the break detection sensor unit detects a break in the wire or belt, the fall prevention unit operates in the emergency situation to prevent the fall of the lifting and lowering carriage. It includes a fall prevention control unit that controls the fall prevention unit to do so,
The fall prevention unit is,
A wedge-forming guide block provided toward the opposing surface of the mast opposite the raising and lowering carriage and inclined so that the gap with the opposing surface of the mast narrows as it moves upward along the longitudinal direction of the mast, and the wedge forming A fall prevention operation module disposed between the guide block and the mast and including a fall prevention member that is sandwiched between the wedge forming guide block and the mast in the emergency situation to prevent the lifting and lowering carriage from falling; and
It includes a fall prevention drive module that is connected to the fall prevention member and provides driving force for the fall prevention member to operate,
The fall prevention drive module is a fall prevention drive motor that operates by an electrical signal from the fall prevention control unit,
The fall prevention member is moved by the fall prevention drive motor to prevent the elevating and lowering carriage from falling, is connected to the fall prevention drive motor and can move forward and backward by the fall prevention drive motor, and the wedge forming guide block and a fall prevention roller disposed between the mast,
When the breakage detection sensor unit detects breakage of the wire or belt, the fall prevention control unit moves the fall prevention roller in a direction where the gap between the mast and the wedge forming guide block narrows to guide the wedge forming guide. It is inserted between the block and the mast to control the fall prevention drive motor to prevent the lifting and lowering carriage from falling,
When the breakage detection sensor unit detects breakage of the wire or belt, the fall prevention control unit moves the fall prevention roller in a direction where the gap between the mast and the wedge forming guide block narrows to guide the wedge forming guide. A wedge-shaped fall, characterized in that it is inserted between the block and the mast to operate the fall prevention drive motor to prevent the fall of the elevating and lowering carriage, and then stops the operation of the fall prevention drive motor after a predetermined time. A vertical conveyance device equipped with a prevention device. delete delete delete delete According to paragraph 1,
The fall prevention operation module is,
An electric cylinder connected to the fall-prevention drive motor on a side opposite to the wedge-forming guide block where the fall-prevention roller is located, and at least a portion of it is coupled to be capable of moving forward and backward by the operation of the fall-prevention drive motor; and
At least a portion of the electric cylinder is coupled to the electric cylinder to move forward and backward integrally when the electric cylinder moves forward and backward, and further includes a roller support bracket to which the fall prevention roller is coupled to support the fall prevention roller,
A vertical transport device having a wedge-type fall prevention device, characterized in that the fall prevention roller moves forward and backward as the roller support bracket moves forward and backward. According to clause 6,
The electric cylinder,
A cylinder rod that moves forward and backward by the fall prevention drive motor;
A roller moving block including a first roller moving block coupled to an end of the cylinder rod, and a second roller moving block disposed in a direction transverse to the first roller moving block and parallel to the cylinder rod and coupled to a roller support bracket. ; and
It includes a cylinder housing accommodating at least a portion of the cylinder rod,
A vertical transport device having a wedge-type fall prevention device, characterized in that an LM guide is provided in the cylinder housing and an LM block is provided in the second roller moving block. According to paragraph 1,
The break detection sensor unit,
A limit switch coupled to the raising and lowering carriage; and
A wedge-type fall prevention device comprising a switch contact module that maintains contact with the limit switch by the wire or belt in the normal situation, but releases contact with the limit switch when the wire or belt is broken. A vertical transport device comprising a device. According to clause 8,
The switch contact module is,
A carriage plate provided on the raising and lowering carriage;
A compression rod connected to the wire or belt and installed through the carriage plate;
A compression spring compressed by the carriage plate and the compression rod; and
A vertical transport device having a wedge-type fall prevention device, characterized in that it includes a contact housing provided at a lower portion of the carriage plate to accommodate the compression spring and to contact the limit switch. According to clause 9,
The switch contact module is,
A shackle coupled to the upper end of the compression rod and coupled to the wire or belt; and
A vertical transport device with a wedge-type fall prevention device, characterized in that it further includes a nut coupled to the compression rod at the lower part of the contact housing to contact and support the contact housing while compressing the compression spring in the normal situation. . delete delete delete A mast on which a lifting and lowering carriage on which logistics goods are placed is connected so as to be able to move up/down;
A break detection sensor unit that detects breakage of a wire or belt connected to the raising and lowering carriage;
It is provided on the lifting and lowering carriage, and prevents the lifting and lowering carriage from falling in a normal situation where up/down movement of the lifting and lowering carriage is possible, and when the wire or belt connected to the lifting and lowering carriage is broken. A pneumatic fall prevention unit that is capable of operating in emergency situations and operates with pneumatic pressure; and
When the break detection sensor unit detects a break in the wire or belt, the pneumatic fall prevention unit provides pneumatic pressure to the pneumatic fall prevention unit to operate in the emergency situation to prevent the fall of the raising and lowering carriage. Includes provision units,
The pneumatic fall prevention unit,
A wedge-forming guide block provided toward the opposing surface of the mast opposite the raising and lowering carriage and inclined so that the gap with the opposing surface of the mast narrows as it moves upward along the longitudinal direction of the mast, and the wedge forming A fall prevention operation module disposed between the guide block and the mast and including a fall prevention member that is sandwiched between the wedge forming guide block and the mast in the emergency situation to prevent the lifting and lowering carriage from falling; and
It includes a fall prevention drive module that is connected to the fall prevention member and provides driving force for the fall prevention member to operate,
The fall prevention drive module is a pneumatic cylinder that operates by the pneumatic pressure of the fall prevention pneumatic supply unit,
The fall prevention operation module is driven by the pneumatic cylinder to prevent the raising and lowering carriage from falling,
The fall prevention member is connected to the piston rod of the pneumatic cylinder and can move forward and backward by the piston rod, and is disposed between the wedge forming guide block and the mast and coupled to the wedge forming guide block to enable relative movement. It is a fall prevention wedge block,
When the breakage detection sensor unit detects breakage of the wire or belt, the fall prevention pneumatic supply unit moves the fall prevention wedge block in a direction where the gap between the mast and the wedge forming guide block narrows to form the wedge. It is sandwiched between the forming guide block and the mast to provide pneumatic pressure to the pneumatic cylinder to prevent the lifting and lowering carriage from falling,
The fall prevention pneumatic supply unit,
A pneumatic pump that provides pneumatic pressure to the pneumatic cylinder; and
A vertical conveyance device having a wedge-type fall prevention device, characterized in that it includes a direction control valve that controls the direction of pneumatic pressure provided to the pneumatic cylinder for forward and backward movement of the fall prevention wedge block. According to clause 14,
The fall prevention pneumatic provision unit,
A vertical conveyance device having a wedge-type fall prevention device, characterized in that it further comprises a rapid exhaust valve provided in the pneumatic pipe between the pneumatic cylinder and the direction control valve to rapidly exhaust the air pressure of the pneumatic cylinder. According to clause 14,
The fall prevention operation module is,
It is coupled to the raising and lowering carriage and further includes a coupling plate to which the wedge forming guide block is coupled,
The wedge forming guide block is provided with a guide rail that guides the movement of the fall prevention wedge block,
A vertical transport device having a wedge-type fall prevention device, characterized in that the fall prevention wedge block is provided with a cam follower that moves along the guide rail. According to clause 14,
A vertical transport device having a wedge-shaped fall prevention device, characterized in that the wedge-forming guide block is provided with a urethane pad on a surface in contact with the opposing surface of the mast. According to clause 14,
The break detection sensor unit,
It is coupled to the raising and lowering carriage, and is pneumatically connected to the direction control valve to maintain contact with the wire or belt in the normal situation, but to change the direction of pneumatic pressure by operating the direction control valve when the wire or belt is broken. A vertical transport device having a wedge-type fall prevention device, characterized in that it is a break detection trigger valve that advances the fall prevention wedge block. According to clause 18,
The break detection trigger valve,
A sensing compression lever that is in a folded state when in contact with the wire or belt and in an unfolded state when it is released from contact with the wire or belt; and
When the sensing compression lever is in an unfolded state in the wire or belt due to the breakage of the wire or belt, the breakage of the wire or belt is sensed and pneumatic pressure is provided to the direction control valve, so that the direction control valve is connected to the fall prevention wedge block. A vertical conveyance device with a wedge-type fall prevention device, characterized in that it includes a trigger valve body that switches the direction control valve to a state of providing the advancing pneumatic pressure to the pneumatic cylinder.

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