JP2005132557A - Overhead traveling crane - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable lifting operation under the entire area of a base roof by minimized number of overhead traveling cranes when the base roof covering a building such as temples, shrines, and towers is constructed and repair work is performed under the raw roof. <P>SOLUTION: In this overhead traveling crane, a girder 1 formed in a roughly chevron shape in side view which is tilted so that its center part is positioned higher than its both parts and a plurality of parallel traveling rails orthogonal to the girder are installed on the underside of the raw roof B. A traveling device 3 for horizontally moving the girder along the traveling rails and a trolley 4 with a hoist running along the girder are installed on the girder. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an overhead crane provided under a bare roof such as a gable roof that is inclined so that a central portion is higher than both sides.

  In recent years, restoration works for historically important cultural properties such as temples and shrines have been increasing. Since it takes a long time to repair temples and shrines, etc., it is common to build a bare roof that covers the entire building, and then perform the restoration work under it. Buildings such as temples, shrines and temples have sloping large roofs, and the unfinished roofs are large-scaled along the shape.

  Therefore, when an overhead crane is installed in the lower part of the bare roof, the entire range of the building is constructed with a conventional overhead crane in which the trolley with a hoisting device is configured to move in two directions in the horizontal plane in the horizontal plane. 9, as shown in FIG. 9, a horizontal girder 1, a traveling rail 2 orthogonal to the girder 1, a traveling device 3 that horizontally moves the girder 1 along the traveling rail 2, and traveling along the girder 1. It was necessary to provide a number of overhead cranes A composed of a trolley 4 with a hoisting device and the like. Of course, if the bare roof B is a flat roof type and the girder 1 is horizontal, the entire range can be covered with a single overhead crane A, but not only a hoisting device with a remarkably long head is required, The scale will be further increased and the construction cost will increase.

  In addition, Patent Document 1 describes an overhead crane that can be used even at an inclined work site. This overhead crane can be rotated at both ends of a girder around a horizontal axis perpendicular to the traveling rail. By providing an adjustment mechanism, even if the traveling rail is inclined in the traveling direction, the girder can move along the traveling rail while maintaining a horizontal posture, and the trolley with a hoisting device can be moved along the girder. It is a structure that runs horizontally.

JP 2001-106477 A

  The present invention has been made in consideration of the above matters. The purpose of the present invention is to construct a bare roof that covers structures such as temples, shrines and temples, and to perform restoration work, etc. under the roof. The purpose is to enable lifting work under the bare roof with as few overhead cranes as possible.

  In order to achieve the above object, the technical measures taken by the present invention are as follows. That is, in the overhead crane according to the first aspect of the present invention, the lower end of the roof is inclined so that the central portion is higher than both sides, and one end is higher than the other end along the inclination of the lower roof. A traveling device provided with two inclined linear girders and a plurality of horizontal traveling rails orthogonal to both girders, and horizontally moving the garters along the traveling rails, respectively. And a trolley with a hoisting device that travels along an inclined girder.

The invention according to claim 2 is the overhead crane according to claim 1, wherein the girder is provided with a linear guide rail inclined along the girder, and a rack along the guide rail, A trolley with a hoisting device includes a plurality of traversing wheels that are free to roll on a guide rail, a pinion gear that meshes with the rack, and a traversing device that includes a motor with a speed reducer that rotationally drives the pinion gear, The traverse device is composed of a hoisting device that is suspended and supported in a swingable manner around a horizontal axis parallel to the rotation axis of the traverse wheel.

  The overhead crane according to the invention of claim 3 is tilted so that the central portion is higher than both sides along the slope of the basic roof at the lower portion of the basic roof inclined so that the central portion is higher than both sides. A side view substantially mountain-shaped girder and a plurality of horizontal traveling rails orthogonal to the girder are provided, and the girder has a traveling device that horizontally moves the girder along the traveling rail, and an inclined girder. A trolley with a hoisting device that travels along the trolley is provided.

  The invention according to claim 4 is the overhead crane according to claim 3, wherein the girder is provided with a plurality of guide rails arranged along the guide rails, and a guide rail having a substantially angled shape in a side view inclined along the girder. A pin rack composed of vertical pins, and a plurality of traverse wheels in which the trolley with a hoisting device is free to roll on a guide rail, and a vertical axis that meshes with the pin rack from one side A traversing device comprising: a drive sprocket that is rotatable around; a reaction force sprocket that is rotatable around a longitudinal axis that meshes with the pin rack from the opposite side; and a motor with a speed reducer that rotationally drives the drive sprocket; The traverse device is composed of a hoisting device that is suspended and supported in a swingable manner around a horizontal axis parallel to the rotation axis of the traverse wheel. .

  According to the configuration of the invention described in claim 1, the trolleys with the hoisting device are provided on each of the two linear girders inclined along the slope of the bare roof, As each girder moves horizontally along the running rail, the two overhead cranes can lift the entire area under the bare roof.

  According to the configuration of the invention described in claim 2, since the trolley with the hoisting device is traversed by the meshing of the rack and the pinion gear, stable traversing without slippage is possible despite the inclination of the guide rail, and the hoisting is performed. Since the device is suspended and supported by the traversing device so as to be swingable around a horizontal axis parallel to the axis of rotation of the traversing wheel, the hoisting device is maintained in a constant posture by gravity regardless of the inclination angle of the guide rail. Can do.

  According to the configuration of the invention described in claim 3, since the trolley with a hoisting device travels along a substantially mountain-shaped girder that is inclined so that the central portion is higher than both sides along the inclination of the bare roof, A single overhead crane makes it possible to lift the entire area under the roof.

  According to the configuration of the invention described in claim 4, the trolley with the hoisting device includes a pin rack constituted by a large number of vertical pins arranged along the guide rail, and a drive driven to rotate around the longitudinal axis. Since it traverses by engaging with the sprocket, stable traverse without slippage is possible despite the inclination of the guide rail.

  In particular, when the traversing device of the trolley with a hoisting device passes through a curved portion formed at the top of the chevron of the guide rail having a substantially chevron shape when viewed from the side, the length of the vertical pins constituting the pin rack and the drive sprocket meshing with the pin rack The vertical displacement of the drive sprocket with respect to the pin rack is allowed within the range of the vertical gap formed by the difference from the thickness, and the meshing state is maintained, so that the curved portion can be smoothly passed. .

Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereby. 1 to 3 show an example of an overhead crane A according to the present invention. In FIG. 1, B is a bare roof that covers a building C such as a shrine or temple, and is a gable roof that is inclined so that the center portion is higher than both sides. In the lower part of the roof B, two linear girders 1 inclined so that one end is higher than the other end along the inclination of the roof B, and a plurality of horizontal girders orthogonal to both girders 1 A traveling rail 2 is provided.

  Each of the garters 1 is provided with a plurality of traveling devices 3 that horizontally move the garters 1 along the traveling rails 2 and a trolley 4 with a hoisting device that travels along the inclined girder 1. It has been.

  As shown in FIG. 2, the traveling device 3 includes a pair of traveling wheels 6 that roll on a lower flange of a traveling rail 2 made of an I-type steel material on a frame 5 fixed to the girder 1, and one traveling wheel 6. Is provided with a motor 7 with a speed reducer. A plurality of traveling devices 3 provided in one girder 1 are driven in synchronization with each other, and the girder 1 is configured to translate along the traveling rail 2.

  As shown in FIG. 3, each girder 1 is configured by connecting two square steel materials arranged in parallel, and a linear 2 inclined along the girder 1 is formed on the lower surface of the girder 1. A guide rail 8 is provided. The guide rail 8 is made of an I-type steel material, and a rack 9 along the guide rail 8 is provided on the lower surface of each guide rail 8.

  The trolley 4 with a hoisting device includes a plurality of traversing wheels 10 that can freely rotate to roll on the lower flange of the guide rail 8, a pinion gear 11 that meshes with the rack 9, and a speed reducer that rotationally drives the pinion gear 11. A traverse device 13 having a motor 12, and a hoisting device (electric hoist) 14 supported by the traverse device 13 so as to be swingable around a horizontal axis P parallel to the rotation axis of the traverse wheel 10; It consists of

  As shown in FIG. 3, the traversing device 13 is configured by symmetrically arranging two sets of pinion gears 11 and a motor 12 with a speed reducer that are driven synchronously.

  According to said structure, the trolley 4 with a winding device is provided in each of the two linear girders 1 inclined along the inclination of the bare roof B, These trolleys 4 with a winding device are each girder. 1, and each girder 1 moves horizontally along the traveling rail 2, so that the two overhead cranes A can lift the entire area under the roof B.

  In particular, since the trolley 4 with the hoisting device is traversed by the meshing of the rack 9 and the pinion gear 11, stable traversing without slippage is possible despite the inclination of the guide rail 8, and the hoisting device 14 is traversed by the traversing device 13. In addition, the hoisting device 14 is supported in a swingable manner around the horizontal axis P parallel to the rotational axis of the traversing wheel 10, so that the hoisting device 14 is maintained in a constant posture by gravity regardless of the inclination angle of the guide rail 8. Can do.

  4 to 8 show other examples of the overhead crane A according to the present invention. In FIG. 4, B is a bare roof that covers a building C such as a temple and shrine, and is a gable roof that is inclined so that the center is higher than both sides. In the lower part of the basic roof B, there are one girder 1 having a substantially mountain shape in a side view inclined so that the central part is higher than both sides, and a plurality of horizontal traveling rails 2 orthogonal to the girder 1. Is provided.

  As shown in FIG. 4, the garter 1 includes a plurality of traveling devices 3 that horizontally move the garter 1 along the traveling rail 2, and a trolley with one hoisting device that travels along the inclined girder 1. 4 are provided.

  As shown in FIG. 5, the traveling device 3 includes a pair of traveling wheels 6 that roll on a lower flange of a traveling rail 2 made of an I-type steel material on a frame 5 fixed to the girder 1, and one traveling wheel 6. Is provided with a motor 7 with a speed reducer. A plurality of traveling devices 3 provided in one girder 1 are driven in synchronization with each other, and the girder 1 is configured to translate along the traveling rail 2.

  As shown in FIG. 7, the girder 1 is configured by connecting two rectangular steel materials arranged in parallel, and the lower surface of the girder 1 has a substantially mountain shape in a side view inclined along the girder 1. Two guide rails 8 are provided. The guide rail 8 is made of an I-type steel material, and the mountain-shaped top portion of the guide rail 8 is formed in a curved portion having an appropriate curvature as shown in FIG. On the lower surface of the guide rail 8, as shown in FIGS. 5 and 6, a pin rack 16 constituted by a large number of vertical pins 15 disposed along the guide rail 8 is provided.

  As shown in FIGS. 6 to 8, the trolley 4 with a hoisting device meshes with the pin rack 16 from one side with a plurality of traversing wheels 10 that are free to roll on the lower flange of the guide rail 8. A drive sprocket 17 that can rotate around the longitudinal axis, two reaction force sprockets 18 that can rotate around the longitudinal axis that mesh with the pin rack 16 from the opposite side, and a speed reducer that rotationally drives the drive sprocket 17. A traverse device 13 having a motor 12, and a hoisting device (electric hoist) 14 supported by the traverse device 13 so as to be swingable around a horizontal axis P parallel to the rotation axis of the traverse wheel 10; It consists of As shown in FIG. 8, the two reaction force sprockets 18 are arranged at intervals so as to be positioned on both sides of the drive sprocket 17 in the lateral direction.

  In the illustrated embodiment, the traversing device 13 is configured such that two sets of a motor 12 with a reduction gear, a drive sprocket 17 and a reaction force sprocket 18 are provided on a common main body frame 19 and synchronized.

  According to the above configuration, the trolley 4 with a hoisting device runs sideways along the substantially mountain-shaped girder 1 that is inclined so that the central portion is higher than the both sides along the inclination of the roof B, and the girder 1 is Since it moves horizontally along the traveling rail 2, it is possible to lift the entire area under the roof B with a single overhead crane A.

  Moreover, the trolley 4 with a hoisting device is traversed by meshing with a pin rack 16 constituted by a large number of vertical pins 15 arranged along the guide rail 8 and a drive sprocket 17 driven to rotate around the longitudinal axis. Therefore, stable traverse without slippage is possible despite the inclination of the guide rail 8.

  In particular, when the traversing device 3 of the trolley 4 with a hoisting device passes through a curved portion formed at the top of the mountain-shaped guide rail 8 in side view, the length of the vertical pins 15 constituting the pin rack 16 and the pin rack Since the vertical displacement of the drive sprocket 17 with respect to the pin rack 16 is allowed and the meshing state is maintained within the range of the vertical accommodation gap formed by the difference between the thickness of the drive sprocket 17 meshing with the 16 The passage of the part can be performed smoothly.

1 is an overall schematic side view showing an embodiment of the present invention. It is a side view of the principal part. It is the vertical front view which expanded and illustrated a part. It is the whole schematic side view which shows other embodiment of this invention. It is a vertical side view of the principal part. It is a side view of the principal part. It is the vertical front view which expanded and illustrated a part. It is a cross-sectional top view of the principal part. It is the whole schematic side view explaining a prior art example.

Explanation of symbols

A overhead crane B bare roof 1 girder 2 traveling rail 3 traveling device 4 trolley with hoisting device 8 guide rail 10 traverse wheel 12 motor with speed reducer 13 traversing device 14 hoisting device 16 pin rack 17 drive sprocket 18 reaction force sprocket

Claims (4)

  Two linear girders that are slanted so that one end is higher than the other end along the slope of the roof, in the lower part of the roof that is slanted so that the center is higher than both sides. A plurality of horizontal traveling rails that are orthogonal to each other, a traveling device that horizontally moves the garter along the traveling rail, and a trolley with a hoisting device that travels along an inclined girder. An overhead crane, comprising:   The overhead crane according to claim 1, wherein the girder is provided with a linear guide rail inclined along the girder and a rack along the guide rail, and the trolley with the hoisting device is mounted on the guide rail. A traverse device comprising a plurality of traversing wheels that can freely rotate to roll, a pinion gear meshing with the rack, a motor with a speed reducer that rotationally drives the pinion gear, and a rotating shaft of the traversing wheel on the traversing device An overhead crane comprising: a hoisting device suspended and supported so as to be swingable about a horizontal axis parallel to the core.   In the lower part of the base roof inclined so that the center part is higher than both sides, the side view substantially mountain-shaped girder inclined so that the center part is higher than both sides along the slope of the base roof, and the girder A plurality of orthogonal horizontal traveling rails are provided, and the girder is provided with a traveling device that horizontally moves the girder along the traveling rail, and a trolley with a hoisting device that travels along the inclined girder. An overhead crane characterized by comprising.   4. The overhead crane according to claim 3, wherein the girder includes a guide rail having a substantially mountain shape in a side view inclined along the girder, and a plurality of vertical pins arranged along the guide rail. 5. A plurality of traversing wheels that are free to roll on a guide rail, and a drive sprocket that is rotatable about a longitudinal axis that meshes with the pin rack from one side; A traverse device including a reaction force sprocket that is rotatable around a longitudinal axis that meshes with the pin rack from the opposite side, a motor with a speed reducer that rotationally drives the drive sprocket, and a rotation shaft of the traverse wheel in the traverse device An overhead crane comprising: a hoisting device suspended and supported so as to be swingable about a horizontal axis parallel to the core.