JP4114181B2 - Structure lifting assist device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lifting assist device that pulls a worker up and down in order to reduce the burden on a worker ascending a structure, and is previously stretched along a hoistway to mount a safety device for working at a high place. It is related with the structure raising / lowering assistance apparatus which engages with the rope currently being pulled and raises while pulling an operator with a tow rope.
[0002]
[Prior art]
Auxiliary devices that pull an operator up and down a structure are conventionally known. In this structure, a dedicated rack rail is attached to the structure, and a pinion of the main body is engaged with the structure, and the structure is moved up and down by driving an engine or a motor.
[0003]
[Problems to be solved by the invention]
The conventional lifting assist device has a large facility and high cost, and has a problem that a dedicated rack rail must be permanently installed in each structure.
Therefore, this invention makes it a subject to provide the structure raising / lowering assistance apparatus which does not require special equipment for exclusive use on the side of a structure, is small and lightweight, and is easy to convey.
[0004]
[Means for Solving the Problems]
In the present invention, in order to solve the above-mentioned problem, it engages with a rope 43 for attaching a safety device, which is stretched in advance along the hoistway of the structure 41, and ascends while pulling an operator through the tow rope 6. The structure raising / lowering assistance apparatus 1 is comprised so that it may. A power supply battery 3 is held in the main body 2 of the apparatus, and a driving roller 5 that is rotated by the battery-driven motor 4 is provided. A movable frame 7 is engaged with the main body 2 so as to be relatively movable, and a pressing roller 9 is provided on the movable frame 7 so as to face the driving roller 5 and sandwich the rope 43. The main body 2 and the movable frame 7 are connected with a torque adjustment bolt 10, the relative position between the main body 2 and the movable frame 7 is adjusted with the torque adjustment bolt 10, and the distance between the driving roller 5 and the pressing roller 9 is variable. And In addition, a load sensor 12 is interposed between the main body 2 and the traction rope 6 so that the drive motor 4 is supplied with power when a predetermined range of load is applied to the traction rope 6.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. 1 is a front view of a structure lifting assist device, FIG. 2 is a rear view of the structure lifting assist device, FIG. 3 is a side view of the structure lifting assist device, FIG. 4 is a schematic explanatory view of a load sensor, and FIG. It is a schematic explanatory drawing of the use condition of an apparatus.
[0006]
As shown in FIG. 5, the structure raising / lowering auxiliary device 1 is used by engaging rollers 5 and 9 with a rope 43 for attaching a safety device that is stretched in advance along a main column 42 that is a hoistway of the structure 41. To do. The structure lifting assisting device 1 ascends along the rope 43 while pulling the operator through the tow rope 6. The safety device 45 to which the operator's safety device rope 44 is connected is disposed above the structure lifting assist device 1 so as to be pushed upward by the tip of the safety device support arm 2a extending upward from the main body. It has become. The arm 2a is engaged with a lever 45a that locks the safety device rope 44 of the safety device 45, and moves up and down while supporting this. The safety device 45 may be arranged below the structure lifting assisting device 1 and lifted by being pulled by the structure lifting assisting device 1, and may be lowered below this.
[0007]
In FIG. 1 to FIG. 3, the main body 2 of the structure raising / lowering auxiliary device 1 has a driving roller 5 that supports a power supply battery 3 and is rotated by a motor 4. The tow rope 6 is connected to the main body 2.
[0008]
The movable frame 7 is engaged with both edges of the support plate 8 of the main body 2 so as to be relatively movable. A pressing roller 9 is provided on the movable frame 7 so as to sandwich the rope 43 so as to face the driving roller 5.
[0009]
The main body 2 and the movable frame 7 are connected by a torque adjustment bolt 10. The relative position between the main body 2 and the movable frame 7 is variable by the torque adjusting bolt 10, and accordingly, the distance between the driving roller 5 and the pressing roller 9 is variable.
[0010]
A torque limiting handle 11 is attached to the torque adjusting bolt 10. The handle 11 is gripped and the torque adjusting bolt 10 is rotated, and the rope is tightened between the driving roller 5 and the pressing roller 9. When this tightening force reaches a predetermined value, slipping occurs between the handle 11 and the torque adjusting bolt 10. It has come to occur. Therefore, even if the rollers 5 and 9 are worn due to use, a constant rope holding force can be ensured at every use.
[0011]
A load sensor 12 is interposed between the main body 2 and the traction rope 6. That is, the load sensor 12 includes a pair of levers 13, a sliding plate 14 connected to the lever 13, and a spring 15 interposed between the levers 13 and 13. As shown schematically in FIG. 4, the sliding plates 14 and 14 are arranged so as to overlap with each other, and are attached to the main body 2 so as to be movable to the left and right so that the overlapping width changes according to the rotation of the lever 13. Yes. The sliding plates 14, 14 include contact pieces 14 a, 14 b that are electrically connected to each other within a predetermined position range, and are interposed between the power supply battery 3 and the drive motor 4. A pulling rope 6 is connected to the lever 13. When the tow rope 6 is pulled or weight is applied, the lever 13 rotates while extending the spring 15 to move the sliding plate 14 to the left or right, respectively, thereby bringing the contact pieces 14a and 14b into contact with each other. The load sensor 12 operates to supply power to the drive motor 4 when a load in a predetermined range (for example, 5 kg to 50 kg) is applied to the tow rope 6.
[0012]
The motor 4 reversely rotates and operates as an electric power generation and electromagnetic brake when the power supply is stopped, and the brake force can be selected by selecting the magnitude of the electric resistance interposed between the output terminals. It is like that.
[0013]
Thus, when climbing to a structure using the structure lifting assist device 1, first, this is attached to the rope 43. With the torque adjustment bolt 10 loosened and the drive roller 5 and the pressure roller 9 spaced apart, the rope 43 is passed between the rollers 5 and 9, and the torque adjustment bolt 10 is tightened to the limit torque of the handle 11, The rope 43 is tightened between the rollers 5 and 9. The safety device rope 44 and the safety device 45 are used in combination. Then, when the main switch is turned on and the pulling rope 6 is pulled or weight is applied thereto, the lifting assist device 1 starts to rise. The worker basically goes up the steps by himself / herself, but when the weight is applied to the tow rope 6, the structure lifting assist device 1 pulls the worker and rises to reduce the burden on the worker. The structure raising / lowering assistance apparatus 1 raises a structure with an operator, repeating a raise and a stop. During the raising operation, the arm 2a pushes up the lever 45a of the safety device 45, so that the safety device 45 can be raised without resistance. When descending, the power supply is stopped and the motor 4 is reversely rotated to act as a brake and descend while pulling the lifting assisting device 1 at an appropriate speed. The final safety against the fall of the worker is ensured by the safety device rope 44 and the safety device 45.
[0014]
【The invention's effect】
As described above, in the present invention, the power supply battery 3 is held in the main body 2 of the apparatus, and the drive roller 5 rotated by the battery-driven motor 4 is provided. A movable frame 7 is engaged with the main body 2 so as to be relatively movable, and a pressing roller 9 is provided on the movable frame 7 so as to face the driving roller 5 and sandwich the rope 43. The main body 2 and the movable frame 7 are connected with a torque adjustment bolt 10, the relative position between the main body 2 and the movable frame 7 is adjusted with the torque adjustment bolt 10, and the distance between the driving roller 5 and the pressing roller 9 is variable. And In addition, a load sensor 12 is interposed between the main body 2 and the traction rope 6 so that the drive motor 4 is supplied with power when a predetermined range of load is applied to the traction rope 6. With the above configuration, it is possible to provide a structure lifting assist device 1 that is small and light and easy to transport without requiring special equipment on the side of the structure.
[Brief description of the drawings]
FIG. 1 is a front view of a structure lifting assist device.
FIG. 2 is a rear view of the structure lifting assist device.
FIG. 3 is a side view of the structure lifting assist device.
FIG. 4 is a schematic explanatory diagram of a load sensor.
FIG. 5 is a schematic explanatory diagram of a usage state of the structure lifting assist device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Structure raising / lowering assistance apparatus 2 Main body 2a Safety device support arm 3 Battery 4 Motor 5 Driving roller 6 Tow rope 7 Movable frame 8 Support plate 9 Pressing roller 10 Torque adjustment bolt 11 Handle 12 Load sensor 13 Lever 14 Sliding plate 14a Contact piece 14b Contact piece 15 Spring 41 Structure 42 Main pillar (hoistway)
43 Safety equipment wearing rope 44 Safety equipment rope 45 Safety equipment 45a Lever

Claims (2)

A structure lifting assist device that engages with a rope for attaching a safety device that is stretched in advance along the hoistway of the structure and rises while pulling an operator through a tow rope,
A main body having a driving roller that holds a power source battery and is rotated by a battery-driven motor
A movable frame that has a pressing roller that is movably engaged with the main body and that opposes the driving roller and sandwiches the rope;
A torque adjusting bolt that connects between the main body and the movable frame in order to adjust the relative position between the main body and the movable frame in order to make the distance between the driving roller and the pressing roller variable;
A structure raising / lowering assist, comprising a load sensor interposed between the main body and the tow rope and operating to supply power to the drive motor when a load in a predetermined range is applied to the tow rope. apparatus. A safety device support arm is provided so as to extend upward from the main body, and a tip portion of the arm is engaged with a lever for locking the safety device rope of the safety device, and on the safety device mounting rope, The structure raising / lowering assisting device according to claim 1, wherein the structure raising / lowering assisting device is configured to move up and down while supporting the safety device with a safety device support arm.

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