JP2539703B2 - Lift for construction work - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a lifting lift for lifting and lowering loads such as construction materials and equipment at a construction site, and more particularly, to automatically adjust the position of the load on the loading platform of the lifting lift. It relates to a lifting lift for construction work that can be corrected by.

(Prior Art) Building production is a single production that basically makes only one building for one design, and the production system also employs a method in which multiple subcontractors simultaneously perform in different construction zones.

In addition, since many types of materials and equipment used for construction (collectively referred to as materials and mechanical equipment) are very large in type and quantity, and have a relatively large volume, the above-mentioned materials and equipment should be installed on a predetermined floor. Lifting lifts are often used when raising and lowering.

In such a case, in order to move more and more equipment, that is, luggage up and down to a predetermined floor within a predetermined time, it is important to quickly load and unload luggage on the lift. Therefore, in recent years, there have been conventionally provided unmanned lifting lifts for loading and unloading luggage onto and from the lifting lifts by using an automatic material carrier such as an unmanned forklift.

(Problems to be Solved by the Invention) However, when the load is transferred to the lifting lift as described above by using an automatic material carrier such as an unmanned forklift, there is a shift in the loading position of the transferred load. In some cases, it is necessary to use manpower in order to correct the deviation, and there is a problem that it is an obstacle to achieving the intended purpose of rapid transportation of luggage.

The present invention has been made in view of the above circumstances, and is capable of automatically correcting the loading position of transferred luggage, and thus can quickly transport the luggage to a predetermined floor for construction work. The purpose is to provide a lifting lift.

(Means for Solving the Problem) In order to achieve the above object, the present invention provides a hoistway formed over each floor of a building, and a luggage carrying device provided in the hoistway so as to be capable of ascending and descending. A loading platform, an elevating device that drives the loading platform up and down, a transfer driving roller that is installed in a central portion on the loading platform, transports loads from the floor to the loading platform, and from the loading platform to the floor, and the transfer unit. The loading drive rollers are arranged at predetermined locations on the floor side and the anti-floor side in the luggage transfer direction, respectively, and output an ON signal when the luggage is loaded at the appropriate location on the loading platform, and load it at the appropriate location. The pair of first load detecting means for outputting an off signal when not in operation, and the floor-side loading / unloading port and the anti-floor-side loading / unloading port of the cargo bed, respectively. Photoelectric line sensor that crosses left and right in the horizontal plane A pair of second load detecting means for outputting an off signal when the load projects from the irradiation plane of each photoelectric line sensor to the outside of the loading platform and an on signal when the load does not project; A controller for controlling the transfer driving roller and the lifting device based on an on / off signal from the first load detecting means and an on / off signal from each of the second load detecting means; When the control device receives the ON signal from each of the first load detecting means, the control device determines that the load is mounted at an appropriate position on the loading platform, and receives the ON from each of the second load detecting means. Sometimes, it is determined that the luggage on the loading platform does not project outside the loading platform, the elevating device is driven, the traveling of the loading platform to the designated stop floor is controlled, and the ON signal from each of the first presence detecting means is received. The proper loading of luggage on the loading platform. After that, when the off state is received from any one of the second load detecting means, it is determined that the load is protruding to the outside of the loading platform, and the protruding portion of the load is detected from the irradiation plane of the photoelectric line sensor which is turned off. It is characterized in that the transfer driving roller is drive-controlled until it is retracted to correct the mounting position of the load on the loading platform.

Further, according to the present invention, when the loading platform is controlled to travel to a designated stop floor by the lifting device, the second loading detection means detects the protrusion of the load and the control device receives an off signal. In this case, the elevating device is emergency stopped, and the transfer drive roller is drive-controlled to correct the loading position of the load on the loading platform.

(Operation) When the control device receives the ON signal from each of the first load detecting means, it determines that the load is mounted at an appropriate position on the loading platform, and also turns on the load of each second load detecting means. When it is received, it is determined that the luggage on the loading platform does not project outside the loading platform, the elevating device is driven, the traveling of the loading platform to the designated stop floor is controlled, and the ON signal from each first loaded detection means is received. After determining that the luggage is properly loaded on the cargo bed, when it is turned off from one of the second loading detection means, it is determined that the luggage is protruding to the outside of the cargo bed, and the photoelectric line is turned off. The loading drive roller is driven and controlled until the projecting portion of the package is retracted from the irradiation plane of the sensor to correct the loading position of the package on the platform.

Therefore, when it is determined by the control device 35 that even a part of the load is projected from the loading / unloading port of the loading platform 9 to the outside of the loading platform 9, the transfer driving roller 11 is drive-controlled by the control device 35 and the loading position of the loading item. Can be automatically corrected to a mounting position in which a part of the luggage does not project outside the loading platform 9, and the luggage can be transported to a predetermined floor more quickly.

Further, according to the present invention, when a part of the luggage projects outside the luggage platform while the luggage platform is traveling, the lifting device is emergency stopped and the mounting position of the projecting luggage can be corrected. Interference can be prevented in advance.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a usage state of a lifting lift for construction work according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a main part of the lifting lift for construction work of FIG.

In FIG. 1, reference numeral 1 denotes a lifting lift. The lifting lift 1 is provided with a temporary hoistway 5 formed by guide rails 3 and the like over each floor of a building, and is vertically movable within the hoistway 5. It is composed of a frame 7 made of a pipe material and the like.

A loading platform 9 is laid along the longitudinal direction of the frame 7, and a loading drive roller for loading and unloading driven by a drive source (not shown) is provided at substantially the center of the loading platform 9. 11 are arranged as shown in FIG.

At both ends of the transfer driving roller 11 in the traveling direction, luggage (not shown) such as equipment and materials or a pallet (not shown) on which the luggage is placed are mounted at appropriate positions on the cargo bed 9. In-vehicle sensors 13 and 15 each of which is, for example, a reflection type sensor, are provided to monitor whether or not they have been carried out.

In the present embodiment, these on-board sensors 13, 15 correspond to the first on-board detection means, and when both the on-board sensors 13 and 15 are turned on, it is assumed that the above-mentioned bag is mounted at the proper position. I try to regard it.

On the other hand, at both ends in the longitudinal direction of the cargo bed 9, there are provided a driver's cab 17 for allowing an operator to board at the time of manual operation, and a passenger cab 19 for a passenger to ride in, with one surface facing each other open. It is provided.

In the upper and lower parts of the driver's cab 17 and the passenger compartment 19, obstacle monitoring devices 21, 21 for monitoring obstacles on the hoistway of the main lifting lift 1 are formed of, for example, transparent sensors.
22 and 22, and a television camera 23 for monitoring the state of the luggage being transferred and being lifted up is provided above the passenger room 19.

Further, the operator's cab 17 is provided with a display device 25 for displaying the operation status of the main lifting lift 1 during unmanned operation and automatic operation, and for displaying an alarm when an abnormality occurs.

On the other hand, on both side surfaces of the loading platform 9 in the traveling direction of the transfer driving roller 11, a line formed of, for example, a transmissive sensor for detecting whether or not the luggage and its parts are exposed from the loading platform 9. The sensors 27 and 29 are provided, and in the present embodiment, these line sensors 27 and 29 correspond to the second presence detection means.

The line sensors 27, 29 are composed of a pair of light emitting elements 27a, 29a and light receiving elements 27b, 29b, and the pair of elements 27a, 27b, 29a, 29b sandwich the transfer drive roller 11 therebetween. The line sensors 27, 29 are arranged so as to face each other, and the line sensors 27, 29 thus formed form a light irradiation area on a plane that traverses each loading / unloading port of the loading platform 9 in the horizontal plane in the vertical direction. Therefore, even if a part of this planar light irradiation area is blocked by a part of the luggage, the outputs of the light receiving elements 27b and 29b are turned off, and it is considered that the luggage is exposed from the luggage carrier 9. ing.

Incidentally, 31 in FIG. 2 is provided at the bottom of the cargo bed 9,
A lifting device for driving the lifting lift 1, 33 in FIG. 1, is a status display device installed on each floor for displaying the operating status of the lifting lift 1.

Then, these obstacle monitoring devices 21 and 22, the TV camera 2
3, the whole of the main lifting lift 1 including the display device 25, the line sensors 27 and 29, the lifting device 31, and the status display device 33,
It is adapted to be controlled by the control device 35 shown in FIG.

Then, the display device 25 and the status display device 33, for example, can be configured to display the current status in characters, or to turn on the blue lamp when normal, and to turn on the red lamp when abnormal. It is also possible to be configured to announce these states by voice.

On the other hand, the control device 35 may be configured to control the operation of the main lifting lift 1 based on the monitoring results of the obstacle monitoring devices 21 and 22, the television camera 23, and the line sensors 27 and 29. It is possible to configure the program and circuit so that, when any abnormality is recognized by these monitoring device groups, the driving of the lifting device 31 is stopped to stop the lifting operation of the lifting lift 1. You can

In addition, reference numeral 37 in the figure denotes a conveyor for loading and unloading the cargo to and from the lifting lift 1, which is installed at the equipment loading / unloading port on each floor, and its operation is linked to the operation of the main lifting lift 1. Is controlled.

Next, the operation of correcting the loading position in the lifting lift 1 of the present embodiment having the above configuration will be described with reference to the flowchart of FIG. Note that, here, a case will be described where the main lifting lift 1 is operated by unmanned operation.

For example, when transferring luggage from the 1st floor to a predetermined floor, 1
The load placed on the transfer conveyor 37 on the floor and waiting at the loading / unloading port is transferred by the transfer conveyor 37 when the lifting lift 1 arrives on the first floor. Transferred onto the roller 11.

On the other hand, in response to this, the transfer driving roller 11 starts driving the roller in the direction of arrow A shown in FIG. This is the start state in the flowchart of the figure.

Here, the control device 35 controls that the transferred luggage is loaded on the loading platform 9
It is inquired whether or not it has been transferred to a predetermined position above, that is, whether or not both of the on-state sensors 13 and 15 output an ON signal (step 101).

Then, when both the on-state signals are not output from the presence sensors 13 and 15, the step 101 is repeated until both the on-state signals are output.
If both signals are on, the process proceeds to the next step.

In the next step, the controller 35 causes the line sensors 27, 29 to
Is inquired via the terminal whether or not the transferred cargo and its part are exposed from the cargo bed 9, that is, whether or not both the line sensors 27 and 29 output an ON signal (step 103). .

Then, when both the line sensors 27 and 29 output the ON signal, a lift start command is output to the lifting device 31 so as to start the lifting lift 1 (step 111). If at least one of the line sensors 27 and 29 does not output an ON signal, it is determined that the position of the transferred package is displaced, and the process proceeds to the next step.

In the next step, of the two line sensors 27, 29, it is inquired whether or not the line sensor 27 on the carry-in / carry-out side of the loading platform 9, that is, the front side line sensor 27 outputs an ON signal (step 105). ).

When the front side line sensor 27 outputs an ON signal, the control device 35 determines that the position of the transferred cargo is displaced to the side opposite to the loading / unloading port of the loading platform 9. Recognize and output a retreat command to instruct the transfer drive roller 11 to rotate the roller in the direction of arrow B in FIG. 2 so as to move the load to the loading / unloading side of the loading platform 9. Yes (step 107).

On the other hand, when the line sensor 27 on the front side does not output the ON signal, the position of the transferred cargo is the loading platform 9
If the luggage is on the loading / unloading side of the
A forward command is output to the transfer drive roller 11 so that the transfer drive roller 11 is moved to the side opposite to the carry-in / out port (step 109). .

Furthermore, when the processes of steps 107 and 109 are completed, the process returns to step 103 again, and thereafter, in this step 103, until it is recognized that the line sensors 27 and 29 are both outputting an ON signal. During the period, steps 103 to 107 (or step 109) are repeated.

When the lifting lift 1 starts to rise in this manner, the control device 35 recognizes that the loading platform 9 has arrived at a predetermined floor, and a sensor provided near the predetermined floor on the hoistway 5. A standby command for a stop command output from (not shown) is entered (step 113), and when a stop command is received, a command to stop the driving is output to the lifting device 31 to lift the lift. The rise of 1 is stopped (step 115).

Further, in the state where the stop command is not received in step 113, the control device 35 is the same as step 103 in order to recognize whether or not the load being transported to the predetermined floor has collapsed. Then, the state of the outputs of the line sensors 27 and 29 is monitored (step 117).

Then, when the line sensors 27 and 29 are both outputting an ON signal, the process returns to the step 113, and when at least one of the line sensors 27 and 29 is not outputting an ON signal, Move on to the next step.

That is, in this case, it is assumed that the position of the transferred goods is displaced from the predetermined position on the cargo bed 9, and the control device
35 outputs a command for stopping the drive to the lifting device 31, makes an emergency stop of the lifting of the lifting lift 1 (step 119), and returns to step 105 described above.

When the parcel is transported to the predetermined floor as described above, the transfer driving roller 11 rotates in the direction of arrow B in FIG. 2 and is placed on the transport conveyor 37 installed at the loading / unloading port on the predetermined floor. The cargo is transferred, and in response to this, the conveyor 37 conveys the transferred cargo to a predetermined position or stores it in a stockyard (not shown).

As described above, the lifting lift 1 of the present embodiment can automatically correct the loading position of the above-mentioned luggage at the time of loading and at the time of transferring to a predetermined floor, so that the load can be transferred to a predetermined floor unattended. It can be performed, and the work can be speeded up.

In this embodiment, as described above, the main lifting lift 1
Although the description has been given of the case where the vehicle is operated by unmanned operation, the lifting lift of the present invention is not limited to such a usage pattern.

For example, an operator can manually load a load on the loading platform 9 to lift and lower the lift 1 unattended, or an operator can ride with the load and operate an operation panel (not shown) in the cab 17. It is also possible to use the lifting lift 1 in manual operation in which it is manually operated.

Further, the presence sensors 13 and 15 may be, for example, proximity switches or the like, and the line sensors 27 and 29 may be, for example, ultrasonic sensors or the like.

(Effect of the invention) As described above, according to the present invention, a hoistway formed over each floor of a building, a luggage carrier provided in the hoistway so as to be lifted, An elevating device that drives the loading platform up and down, a transfer driving roller that is installed in a central portion on the loading platform and that transfers loads from the floor to the loading platform and from the loading platform to the floor, and the transfer driving roller. When the luggage is loaded in the proper place on the cargo bed, the ON signal is output, and when it is not loaded in the proper location A pair of first load detecting means for outputting an OFF signal, and a floor-side loading / unloading port and an anti-floor-side loading / unloading port of the loading platform are respectively arranged, and these loading / unloading ports are in a vertical plane. It consists of a photoelectric line sensor that crosses left and right with A pair of second stock detection means for outputting an OFF signal when the package projects from the irradiation plane of each photoelectric line sensor to the outside of the loading platform, and an ON signal when the package does not project, and each of the first inventory. A control device for controlling the transfer drive roller and the elevating device based on an on / off signal from the detection means and an on / off signal from each of the second load detection means, and the control device comprises: When the ON signal from each of the first load detecting means is received, it is determined that the load is mounted at an appropriate position on the load bed, and when the load from each of the second load detecting means is turned on, the load on the load bed is determined. Drive the elevating device to determine that the vehicle does not project outside the loading platform, control the traveling of the loading platform to the designated stop floor, and receive the ON signal from each of the first loading detection means to move the loading platform onto the loading platform. After determining the proper loading of luggage, When the load is received from one of the second load detection means, it is determined that the load is protruding to the outside of the loading platform, and the transfer is performed until the protrusion of the load is retracted from the irradiation plane of the turned off photoelectric line sensor. Since the loading drive roller is drive-controlled to correct the loading position of the luggage on the luggage carrier, the control device determines that even a portion of the luggage is projected from the loading / unloading port of the luggage carrier to the outside of the luggage carrier. , The transfer drive roller is driven and controlled by the control device, and the loading position of the luggage can be automatically corrected to the loading position where a part of the luggage does not project outside the loading platform, and the transportation of the luggage to the predetermined floor can be performed. It can be done more quickly.

Further, according to the present invention, when the loading platform is controlled to travel to a designated stop floor by the elevating device, the second loading detection unit detects a protrusion of the load and the control device outputs an off signal. When receiving the load, the elevator is stopped and the transfer drive roller is driven and controlled to correct the loading position of the load on the loading platform. When it protrudes outside, the lifting device is stopped
It is possible to automatically correct the mounting position of the protruding baggage and prevent the baggage from interfering with the beams or the like on the floor.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state of a lifting lift for construction work according to an embodiment of the present invention, FIG. 2 is a perspective view showing a main part of the lifting lift for construction work of FIG. 1, and FIG. 6 is a flowchart showing a loading position correcting operation in the lifting lift for construction work of the present embodiment. In the figure, 1 is a lifting lift, 5 is a hoistway, 9 is a loading platform, 11 is a transfer drive roller, 13 and 15 are on-board sensors (first on-board detection means), 27 and 29 are line sensors (on-board). (2) In-load detection means), 31 is a lifting device, and 35 is a control device.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Seiichi Shibayama 4-6-15 Sendagaya, Shibuya-ku, Tokyo Within Fujita Industries Co., Ltd. (72) Wataru Isomura 4-6-115 Sendagaya, Shibuya-ku, Tokyo Fujita Industry Incorporated (56) References JP-A-50-150146 (JP, A) JP-A61-73007 (JP, A) Actual Kaihei 1-339507 (JP, U) JP-B-36-16765 (JP, A) B1)

Claims (2)

(57) [Claims] 1. A hoistway formed over each floor of a building, a luggage carrier that is vertically movable in the hoistway, an elevating device that elevates and drives the luggage carrier, and the luggage carrier. A transfer drive roller that is installed in the upper center part and that transfers luggage from the floor to the cargo bed and from the cargo bed to the floor, and the floor side and the anti-floor in the luggage transfer direction of the transfer drive roller. A pair of first cargos which are respectively arranged at predetermined locations on the floor side and which output an ON signal when the luggage is mounted at an appropriate location on the loading platform and output an OFF signal when the luggage is not mounted at the appropriate location. A detection means and a photoelectric line sensor which is disposed at each of the floor-side loading / unloading port and the anti-floor-side loading / unloading port of the loading platform, and which crosses each of these loading / unloading ports in the left-right direction in the vertical plane. , Luggage of each photoelectric line sensor A pair of second load detecting means for outputting an off signal when projecting from the plane of projection to the outside of the loading platform and an on signal when not projecting, and an on / off signal from each of the first load detecting means. A control device for controlling the transfer drive roller and the elevating device based on an on / off signal from each of the second load detecting means, wherein It is determined that the package is loaded at an appropriate location on the platform when the ON signal is received, and it is determined that the package on the platform is not projected to the outside of the platform when receiving the ON signal from each of the second load detecting means. After driving the elevating device, controlling the traveling of the loading platform to the designated stop floor, and receiving the ON signal from each of the first loading detection means to determine the proper loading of the loading on the loading platform, From any one of the second load detection means When the load is received, it is judged that the load is protruding to the outside of the loading platform, and the transfer drive roller is driven and controlled until the projecting portion of the load retracts from the irradiation plane of the photoelectric line sensor that is turned off. A lifting lift for construction work, characterized by correcting the loading position of luggage. 2. When the loading platform is controlled to travel to a designated stop floor by the lifting device, the second loading detection means detects a protrusion of the load and the control device receives an off signal. 2. The lifting lift for construction work according to claim 1, wherein at the time, the elevating device is emergency stopped and the transfer drive roller is drive-controlled to correct the loading position of the load on the loading platform.