JP2019104592A - Gondola for work - Google Patents

Abstract

To realize efficient elevator device installation work at low cost.SOLUTION: This gondola for work is used for installing an elevator device, and provided with: a base that is disposed between a pair of guide rails for guiding a car of the elevator device; a work floor that is supported on the base; a pair of legs that are fixed to the base at positions respectively corresponding to the guide rails and that move along the guide rails; a beam that is disposed above the gravity center of the base on which the work floor is supported; a pair of support members that extend from the legs in a direction orthogonal to a vertical direction and support both ends of the beam; and a hoist which is provided to the beam and on which a wire for suspending the base is wound.SELECTED DRAWING: Figure 2

Description

  Embodiments of the present invention relate to a working gondola.

  In an elevator system, a gondola for work is used for installation of a guide rail for guiding raising and lowering of a car. This type of gondola includes a base on which the work floor is placed, a pair of upright columns provided at positions corresponding to the guide rails of the elevator apparatus, and a hoist for raising and lowering the gondola. The hoists are respectively fixed to, for example, vertical columns fixed to the base. In this case, the lifting center of the gondola is located at the midpoint between the pair of upright columns.

  However, the upright is fixed to the base at a position corresponding to the guide rail. Therefore, depending on the position of the guide rails, the center of gravity of the base on which the work floor is fixed may be offset from the center of lifting. In this case, the work floor tilts, and the work posture on the work floor becomes unstable. Therefore, conventionally, a balance weight is mounted on the work floor, or the center of gravity position of the work floor is changed by extending or retracting the work floor, and the center of gravity of the gondola and the lifting center are brought close to maintain the level of the work floor. Was.

  However, placing a balance weight on the work floor degrades workability and further increases the load on the hoist. In addition, since the work floor which can be expanded and contracted becomes complicated, there is a problem that the manufacturing cost and the running cost of the apparatus increase.

Japanese Patent Application Laid-Open No. 7-412361

  An object of the present invention is to realize the efficiency of installation work of an elevator apparatus at low cost.

  In order to solve the above problems, a working gondola according to the present embodiment is a working gondola used for installation of an elevator apparatus, and a base disposed between a pair of guide rails for guiding a car of the elevator apparatus , A work floor supported by the base, a pair of upright columns fixed to the base at positions corresponding to the pair of guide rails, and moving along the guide rails, and erected above the center of gravity of the base supporting the work floor And a pair of support members extending from the pair of upright columns in a direction perpendicular to the vertical direction to support both ends of the beam, and a wire provided on the beam for winding a wire for suspending the base And a machine.

It is a perspective view of an elevator apparatus. It is a perspective view of the gondola 10 used for the installation work of an elevator apparatus. It is a figure which shows a gondola by abbreviate | omitting a work floor and a roof. It is a figure which expands and shows a supporting member. It is a perspective view of a work floor. It is a side view which shows the positional relationship of a base and a work floor. It is a top view which shows the positional relationship of a base and a work floor. It is a figure which shows the modification of a supporting member.

  Hereinafter, the working gondola according to the present embodiment will be described using the drawings. In the description, an XYZ coordinate system consisting of mutually orthogonal X, Y, and Z axes is used as appropriate.

  FIG. 1 is a perspective view of an elevator apparatus 100. FIG. The working gondola according to the present embodiment is used for installation of the elevator apparatus 100. The elevator apparatus 100 is arrange | positioned inside the hoistway 200 provided in buildings, such as an apartment and a building. As shown in FIG. 1, the elevator apparatus 100 includes a car 131, a counterweight 132, an elevating motor 140, guide rails 121 to 124, and a control panel 170.

  Each of the guide rails 121 to 124 is a member whose longitudinal direction is the Z-axis direction. The guide rails 121 and 122 are a pair of members for guiding the car 131 so as to be able to move up and down. The guide rails 123 and 124 are a pair of members for guiding the counterweight 132 so as to be able to move up and down. The guide rails 121 and the guide rails 122 are spaced apart in the Y-axis direction. The guide rails 123 and 124 are disposed on the -X side of the guide rails 121 and 122, and are similarly spaced apart from each other in the Y-axis direction.

  The car 131 is a unit that accommodates passengers and raises and lowers the hoistway 200. The car 131 is disposed between the guide rails 121 and 122, and is provided movably in the vertical direction with respect to the guide rails 121 and 122. On the side surface of the car 131, a door (not shown) for entering and exiting the inside of the car 131 is provided.

  The counterweight 132 is provided movably in the vertical direction with respect to the guide rails 123 and 124. The weight of the counterweight 132 is adjusted to be a predetermined ratio with respect to the weight of the car 131.

  The lift motor 140 is a motor for moving the car 131 up and down. The lift motor 140 is disposed at the top of the hoistway 200 so that the rotation axis is parallel to the Y axis. A pulley 142 is fixed to the rotation shaft of the lift motor 140.

  As shown in FIG. 1, a wire 160 is wound around the pulley 142 of the lift motor 140. The wire 160 is fixed at one end to the car 131 and at the other end to the counterweight 132.

  The control panel 170 houses a control device for controlling the elevator motor 140 and the devices provided in the car 131. The control panel 170 is electrically connected to the device provided in the car 31 via the cable 171.

  In the elevator apparatus 100 configured as described above, when the lift motor 140 rotates in the forward direction, the car 131 ascends and the counterweight 132 descends. In addition, when the lift motor 140 reversely rotates, the car 131 is lowered and the counterweight 132 is raised.

  FIG. 2 is a perspective view of the gondola 10 used for the installation work of the elevator apparatus 100. As shown in FIG. 2, the gondola 10 includes a base 20, a work floor 50 mounted on the base 20, a pair of vertical columns 21 attached to the base 20, a beam member 23 disposed above the work floor 50, and a beam A support member 22 for supporting the member 23, two winding machines 25 supported by the beam member 23, and roofs 27 and 28 provided above the work floor 50 are provided.

  FIG. 3 is a view showing the gondola 10 with the work floor 50 and the roofs 27 and 28 omitted. As shown in FIG. 3, the base 20 is, for example, a rectangular member whose longitudinal direction is the Y-axis direction. The base 20 is a member made of H steel made of iron or the like or an iron plate.

  The upright column 21 is a member whose longitudinal direction is the vertical direction (Z-axis direction) and whose cross section is U-shaped. At the upper end portion and the central portion of the upright column 21, grip portions 21a for gripping the guide rails 121 and 122 of the elevator apparatus 100 so as to be movable in the vertical direction are formed. The gripping portion 21 a is configured of a roller 211 rotating around the Y axis and two rollers 212 rotating around the X axis. The roller 211 is disposed at an opening passing through the vertical column 21 in the X-axis direction. In the upright column 21, the guide rails 121 and 122 are gripped by the two grips 21a formed of three rollers.

  As shown in FIG. 3, the lower end portion of the vertical column 21 is fixed to the side surface on the + X side and the side surface on the −Y side of the base 20 by, for example, a bolt. Thereby, a pair of standing pillars 21 is attached to the base 20 in the state which mutually opposed. The opening provided in the upright column 21 is closed by the closing member 21 b from the base 20 side. The roller 211 is attached to the surface on the −X side of the closing member 21 b.

  The beam member 23 is a rectangular plate-like member whose longitudinal direction is the X-axis direction. The beam member 23 is supported by the upright column 21 via the support member 22 at a position spaced a predetermined distance from the upper surface of the base 20.

  The support member 22 is a member whose longitudinal direction is the Y-axis direction. FIG. 4 is an enlarged view of the support member 22. As shown in FIG. As shown in FIG. 4, the support member 22 is made of metal such as iron, and the XZ cross section is an L-shaped member. The support member 22 is a member composed of two parts, a first part 22a parallel to the YZ plane and a second part 22b parallel to the XY plane.

  The support member 22 is fixed to the upright column 21 by, for example, four bolts 221 at the -Y side end of the first portion 22a. Then, the + Y side end of the second portion 22 b is fixed to the end of the beam member 23 by, for example, two bolts 221. As shown in FIG. 3, both ends of the beam member 23 are supported by the pair of support members 22.

  Support columns 24 are fixed to both ends of the beam member 23 in the X-axis direction. The support column 24 is a hollow member made of metal such as iron and having the longitudinal direction as the Z-axis direction. A hoisting machine 25 is fixed to a central portion of the support column 24. Further, a hollow guide 26 is fixed to the upper end of the support column 24.

  The winding machine 25 is a device capable of winding up and down the wire 25a. The wire 25 a drawn from the hoisting machine 25 is laid to the upper side of the hoistway 200 of the elevator apparatus 100 via the inside of the guide 26, and one end thereof is fixed to the ceiling of the hoistway 200.

  As shown in FIG. 2, the roofs 27 and 28 are supported by two guides 26. The roof 27 is composed of two plate members 27a and 27b. The plate member 27a is horizontally supported by the guide 26, and the plate member 27b is connected to the plate member 27a so as to be rotatable about an axis parallel to the X axis. For this reason, the worker can unfold and fold the roof 27 by swinging the plate member 27b against the plate member 27a in accordance with the work content.

  Similarly, the roof 28 is composed of two plate members 28a and 28b. The plate member 28 a is horizontally supported by the guide 26, and the plate member 28 b is connected to the plate member 28 a so as to be rotatable about an axis parallel to the X axis. For this reason, the worker can expand and fold the roof 28 by swinging the plate member 28b relative to the plate member 28a in accordance with the work content.

  FIG. 5 is a perspective view of the work floor 50. As shown in FIG. The work floor 50 is a rectangular member provided with an iron grating for supporting a worker, a frame for supporting the grating, and the like. A fence 51 is provided on the upper surface of the work floor 50. The fences 51 include four columns 51a provided at the four corners of the work floor 50, a grid member 51b stretched over the columns 51a so as to be parallel to the Y axis, and a center of the columns 51a parallel to the XZ plane. It is comprised from the frame 51c which can be rotated. The pair of frames 51c adjacent to each other functions as a gate for entrance on the work floor and for leaving the work floor.

  As shown in FIG. 2, the work floor 50 is mounted on the upper surface of the base 20. The position of the work floor 50 in the Y-axis direction with respect to the base 20 is adjusted according to the size and size of the elevator apparatus 100 to be installed, or the positions of the guide rails 121 and 122.

  FIG. 6 is a side view showing the positional relationship between the base 20 and the work floor 50. As shown in FIG. As shown in FIG. 6, when the work floor 50 is placed on the base 20, the beam member 23 is supported above the work floor 50 and in parallel with the work floor 50.

  FIG. 7 is a plan view showing the positional relationship between the base 20 and the work floor 50. As shown in FIG. The center of gravity CG indicates the center of gravity of the base 20 when the work floor 50 is placed. As shown in FIG. 7, when the work floor 50 is placed slightly offset to the + Y side with respect to the base 20, the center of gravity CG is the center of gravity of the base 20 before the work floor 50 is placed. Slightly on the + Y side. The beam member 23 is supported on the center of gravity CG via the support member 22 by the upright column 21. The length of the support member 22 in the Y-axis direction is determined according to the distance between the vertical column 21 and the center of gravity CG in the Y-axis direction.

  In the gondola 10 configured as described above, for example, the wire 25a is wound up by the winding machine 25 shown in FIG. 2, the gondola 10 ascends, and the wire 25a is drawn down, the gondola 10 descends.

  Further, as shown in FIG. 7, the wire 25 a for suspending the gondola 10 is located above the beam member 23 stretched so as to overlap the center of gravity CG of the base 20. Thus, the gondola 10 can move up and down while maintaining the work floor 50 horizontally. Therefore, the grip portion 21 a of the upright column 21 slides on the guide rails 121 and 122 without applying stress to the guide rails 121 and 122 to be gripped. Therefore, centering of the guide rails 121 and 122 can be performed with high accuracy.

  As described above, in the gondola 10 according to the present embodiment, the beam member 23 is bridged by the support member 22 extending from the upright column 21 so that the beam member 23 overlaps the center of gravity CG of the base 20. Therefore, by providing the winding machine 25 at both ends of the beam member 23, the lifting center by the wire 25a can be made to coincide with the center of gravity CG. Therefore, the gondola 10 can be raised and lowered while keeping the work floor 50 horizontal. As a result, the installation work of the elevator apparatus can be made more efficient.

  Further, in the present embodiment, the lifting center can be made to coincide with the center of gravity CG without using a counterweight or the like. Therefore, there is no need to increase the size of the hoist or to provide the work floor with a function to adjust the center of gravity. Therefore, the installation work of the elevator apparatus can be made more efficient without increasing the cost of the apparatus.

  As mentioned above, although embodiment of this invention was described, this invention is not limited by the said embodiment. For example, in the above embodiment, as shown in FIG. 7, the length of the support member 22 is determined in accordance with the distance between the vertical column 21 and the center of gravity CG in the Y-axis direction. For example, as shown in FIG. 8, the first portion 22a of the support member 22 is provided with a plurality of openings 22c at a predetermined pitch in the Y-axis direction, and the openings 22c into which the bolts 221 are inserted are selectively selected. By changing it, the support member 22 may be made movable with respect to the vertical column 21 in stages. Thereby, the distance of the Y-axis direction of the standing pillar 21 and the beam member 23 can be adjusted easily. Therefore, even when the position of the center of gravity CG moves by changing the positional relationship between the base 20 and the work floor 50, the beam member 23 can be constructed above the center of gravity CG without replacing the support member 22.

  Similarly, a plurality of openings 22 c into which the bolts 221 are inserted may be provided in the second portion 22 b of the support member 22 at a predetermined pitch. Also in this case, the distance in the Y-axis direction between the upright column 21 and the beam member 23 can be easily adjusted. Therefore, even when the position of the center of gravity CG moves by changing the positional relationship between the base 20 and the work floor 50, the beam member 23 can be constructed above the center of gravity CG without replacing the support member 22.

  While certain embodiments of the present invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. These novel embodiments can be implemented in other various forms, and various omissions, replacements and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 gondola 20 base 21 upright pillar 21a grip part 21b closing member 22 support member 22a 1st part 22b 2nd part 22c opening 23 beam member 24 support pillar 25 winding machine 25a wire 26 guide 27 28, roof 27a, 27b, 28b, board Members 50 Working floor 51 Rail 51a Column 51b Grid member 51c Frame 100 Elevator system 121 to 124 Guide rail 132 Counter weight 140 Lifting motor 142 Pulley 160 Wire 170 Control panel 171 Cable 200 Liftway 211, 212 Roller 221 Bolt 121 to 124 Guide rail CG center of gravity

Claims (4)

A working gondola used to install the elevator system,
A base disposed between a pair of guide rails for guiding a car of the elevator apparatus;
A work floor supported by the base;
A pair of upright columns fixed to the base at positions corresponding to the pair of guide rails and moving along the guide rails;
A beam installed above the center of gravity of the base supporting the work floor;
A pair of support members extending from each of the pair of upright columns in a direction orthogonal to the vertical direction and supporting both ends of the beam;
A winding machine provided on the beam and wound with a wire for suspending the base;
Working gondola with.   The working gondola according to claim 1, wherein the support member supports the beam so as to be horizontally movable.   The working gondola according to claim 1, wherein the support member is movable horizontally with respect to the upright column.   The working gondola according to any one of claims 1 to 3, wherein the base movably supports the work floor in a horizontal direction.

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