JPH04203007A - Movable hanging scaffold - Google Patents

Abstract

PURPOSE:To obtain a simple structure of movable hanging scaffold by a method in which rails are formed on the lower part of a hang structure, a drive truck moving in the longitudinal direction and a follow truck to be connected with the drive truck are hung down, and groove-shaped scaffolds are rotatably connected to the hang lever from each truck. CONSTITUTION:A support structure 3 such as the horizontal beam of a structure 1 is fixed to both ends of rails 2 extending longitudinally. Racks 5 are fixed longitudinally to the lower parts of the rails 2, and wheels 7 fixed to a drive truck 10 having pinions 9 to be operated by a traveling driver 8 are set on a flange 6. A follow truck 12 having wheels 11 is connected through the truck 10 and the connector 13 to the lower flange 6. The upper part of the hang lever 14 is connected to the horizontal shaft 15 of the truck 10 and the upper part of the lever 16 is connected to the horizontal shaft 15 of the truck 12. A groove-shaped scaffold 18 with a scaffold floor 38 is hung and supported on the lower part of the levers 14 and 16 to make up a movable hanging scaffold. The scaffold can thus be travelled without trouble, and the structure can be simplified and greatly strengthened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a movable suspended scaffold used for inspecting, repairing, painting, etc. the back side of a bridge or other constructed structure.

[Conventional technology]

Traditionally, the back side of bridges and other constructed structures is inspected.

Mobile suspended scaffolding that can be used for repairs and painting is as follows:
(1) Mobile suspended scaffolding disclosed in Japanese Patent Application Laid-Open No. 62-189253, and (2) Mobile suspended scaffolding disclosed in Japanese Patent Application Laid-Open No. 64-1860 are known.

[Problem to be solved by the invention]

In the case of the movable suspended scaffold described in (1) above, the rack is fixed to the part that will become the handrail of the scaffold, and the bunion rolls on the rack, which is dangerous, and the rail extending in the longitudinal direction of the erected structure is dangerous. Since the main girder suspends and supports the rail through a large number of clamps and hanging members, the support strength of the rail is weak and the manufacturing cost is high.

In addition, in the case of the movable suspended scaffold described in (2) above, since an upwardly opening groove-shaped traversing rail with an inward-facing upper flange is used, water and dust may accumulate in the traversing rail.
As a result, the traversing rails are prone to early corrosion and the upper flange provided in a cantilevered manner is prone to bending under load, resulting in a problem that the load-bearing strength of the mobile suspended scaffold is weak.

The object of the present invention is to provide a mobile suspended scaffold that can advantageously solve the above-mentioned problems.

[Means to solve the problem]

In order to achieve the above object, in the movable suspended scaffold of the present invention, both ends of the plurality of rails 2 extending in parallel to the longitudinal direction of the lower part of the constructed structure 1 are connected to the cross beams in the constructed structure 1. Alternatively, it is fixed to a support structure 3 such as a tilting structure, a rack 5 extending in the longitudinal direction of the rail is fixed to the bottom of each rail 2, and a rack 5 is fixed to the bottom flange 6 of each rail 2.
A plurality of wheels 7 arranged at intervals in the longitudinal direction of the rail
and a pinion 9 that meshes with the rack 5 and is rotated by a traveling drive device 8. The wheels 7 of the drive truck 10 are mounted on the lower flange 6 of each rail 2.
The wheels 11 of a driven truck 12 are provided with a plurality of wheels 11 arranged at intervals in the longitudinal direction of the rail.
The driving truck 10 and the driven truck 12 are connected via a connecting member 13, and the upper part of the hanging rod 14 is connected to the driving truck 10 via a horizontal shaft 15 perpendicular to the longitudinal direction of the rail. The upper part of the hanging rod 16 is connected to the driven truck 12 via a horizontal shaft 17 perpendicular to the longitudinal direction of the rail, and the hanging rod 14.16 is connected to a groove-shaped scaffolding 18 extending in the direction perpendicular to the rail. The lower part of one of the plurality of hanging rods 14 and 16 arranged in the direction perpendicular to the rail is connected to the groove-shaped scaffolding 18 in a direction perpendicular to the rail, and the lower part of one of the hanging rods is immovably connected in the direction perpendicular to the rail.
The lower part of the other hanging rods except for that one hanging rod is the groove-shaped scaffolding 18.
The upper parts of the two types of hanging rods 14 and 16 are connected to the driving truck 10 or the driven truck 12 so as to be rotatable on their axis.

〔Example〕

Next, the present invention will be explained in detail using illustrated examples.

The drawing shows an embodiment of the present invention, in which a plurality of rails 2 extending parallel to the longitudinal direction are arranged at the bottom of an erection structure 1 such as a road bridge, and both ends of the rails 2 is fixed to a support structure consisting of cross beams 3 in the erection structure 1, a rack 5 extending in the longitudinal direction of the rail is fixed to the lower part of each rail 2, and a lower flange 6 of each rail 2
The wheels 7 of the drive truck 10 are equipped with a plurality of wheels 7 arranged at intervals in the longitudinal direction of the rail, and a pinion 9 which is rotated by a travel drive device 8 while meshing with the rack 5. On the lower flange 6 of each rail 2, the wheels 11 of the driven bogie 12, which is equipped with a plurality of wheels 11 arranged at intervals in the longitudinal direction of the rail, are mounted, and the drive bogie IO and the driven bogie 12 are mounted. The driven truck 12 is connected to the driven truck 12 by a rod-shaped connecting member 13 and bolts 19 .

The traveling drive device 8 includes a drive bevel gear 21 rotated by a handle 20, a worm 23 connected to a driven bevel gear 22 that meshes with the drive bevel gear 21, and a worm 23 that meshes with the worm 23 to rotate the pinion 9. worm wheel 24.

The wheels 7 of the driving truck 10 are rotatably attached to a holding fitting 26 fixed to the upper part of the vertical screw rod 25.
is inserted into the vertical tube 28 in the frame 27 of the drive truck 10, and is located at the lower part of the vertical screw rod 25, and is provided with a level adjustment nut 29 and a lock nut 3 located at the lower part of the vertical tube 28.
0 are screwed together, and furthermore, the upper part L of the vertical rod 25 and the fixing napft 31 located at the upper part of the vertical cylinder 28 are engaged, and the rack 5 and pinion 9 are engaged by the level adjusting nut 29. The amount is adjusted.

At the middle lower part of the frame 27 of the drive truck 10, there is a cylinder 33A.
are rotatably connected by a horizontal shaft 15 perpendicular to the longitudinal direction of the rail, and a cylindrical body 33B is connected to a horizontal shaft 17 perpendicular to the longitudinal direction of the rail at an intermediate lower part of the frame 32 in the driven truck 12.
The upper part of the hanging rod 14.16, which is rotatably connected to the cylinder body 33A and 33 and has a male threaded part 34 at the upper part,
A level adjustment ring 7) 35 and a lock nut 36 are fitted to the male threaded portion 34 at the upper part of the cylinders 33A and 33B.

In addition, among the two hanging rods 14 and two hanging rods 16 lined up in the direction of the construction structure, support rollers 37 extend in the rail longitudinal direction at the bottom of one of the hanging rods 14 and 16 on both sides in the rail longitudinal direction. It is rotatably mounted on a supporting shaft.

Side walls 39 are fixed to both sides in the longitudinal direction of the scaffolding floor 38 extending in the width direction of the scaffolding structure, and an end sidewall 40 disposed at one end of the scaffolding floor 38 is connected to the scaffolding floor 38 and the sidewalls 39. , and an entrance/exit door 41 is attached to the end of one side wall 39 at the other end of the scaffold floor 38, thereby forming a channel-shaped scaffold 18.

A support fitting 44 having a pair of support plates 42 and a horizontally elongated hole 43 is fixed to the upper part of each side wall 39 at a position facing the lower part of one of the hanging rods 14A, 16A, and the other hanging rod 14
B, at a position facing the lower part of 16B, each side wall 39
A support fitting 44 having a pair of support plates 42 and a horizontally elongated hole 43 is fixed to the hanging rod 16B on the upper part of the hanging rod 16B.
A pair of support plates 45 and a support fitting 47 having a through hole 46 are fixed to the one suspension rod 14A, 14B.
The lower portions of 6A and 16B are inserted between the pair of support plates 42, and each support plate 42 is connected to each support roller 37! !
Further, the lower part of the other suspension rod 14B is inserted between the pair of support plates 45, and the lower part of the other suspension rod 14B is inserted between the pair of support plates 45, and
is placed on each support roller 37.

A holding cylinder 49 is fixed to one end of the frame 27 of the drive truck 10, and a vertical rod 51, which has a horizontal locking handle 50 fixed to its lower end, is fitted into the holding cylinder 49 so as to be able to move up and down and rotate. , and a plate-shaped stopper 52 that is fitted between the teeth of the rack 5 is fixed to the upper end of the vertical rod 51, and a deep stopper engagement groove 53 and a shallow stopper detachment groove 54 are provided in the lower part of the holding cylinder 49. are spaced apart by 90 degrees, and further include a spring receiving ring 55 fixed inside the middle of the holding cylinder 49 and a spring engaging ring 5 provided on the upper part of the vertical rod 51.
6, a stopper retaining spring 57 is interposed in a compressed state.

Pull the locking handle 50 downward by hand to release the groove 5.
3.54, the vertical rod 51 supporting the stopper 52 can be rotated, and when the locking handle 50 is inserted into the stopper removal groove 54, the stopper 52 is removed from the rack 5. When the locking handle 50 is held in this state and the locking handle 50 is inserted into the stopper engaging groove 53, the vertical rod 51 supporting the stopper 52 is moved upward by the stopper retaining spring 57, and the stopper 52 is moved up against the teeth of the rack 5. The movable suspended scaffolding is thus fixed.

On the longitudinal side of the construction structure on the pier 4, a plurality of L
A shaped cradle 58 is fixed, a transverse member 59 of the pedestal 58 is arranged at a lower level than the scaffold floor 38 of the channel scaffold 18, and the cradle 58 is placed on the outside of the side wall 39 of the channel scaffold 18. A rubber shock absorbing member 61 is fixed to be in contact with the vertical member 60 in , and a vertical ridge screw cylinder 62 is fixed to both sides of the scaffold floor 38 in the width direction, and is arranged above the horizontal member 59 . The leg member 64 having the rotary tool engaging portion 63 is screwed into the internally threaded cylinder 62, and when the movable suspended scaffold is not used, the movable suspended scaffold is moved onto the horizontal member 59 on the pedestal 58, and then The leg members 64 are rotated and lowered, and the channel scaffold 18 is supported by the horizontal members 59 via the leg members 64.

Since the total length of the rail 2 is long, it is necessary to add ranked rail units. FIG. 13 shows an example of a connecting structure of the ranked rail units 65 and a supporting structure of the rail unit 65 by the support structure 3, in which the ranked rail units 65 to be connected are arranged in series, and the rail 2 The webs 66 of the rails 2 are connected by joint plates 67 and bolts 68, and a reinforcing/gradient adjusting seat plate 70 is fixed by welding to the top surface of the end of the upper flange 69 of each rail 2, and the lower flange 71 of the support structure 3 and each The seat plate 70 and each upper flange 69 are tightly coupled by bolts 72 inserted therethrough.

〔Effect of the invention〕

Since this invention is configured as described above, it produces the effects described below.

The upper part of one of the hanging rods 14 that suspends and supports the groove-shaped scaffolding 18 is
The upper part of the other hanging rod 16, which is rotatably connected to the driving truck 10 via a horizontal shaft 15 perpendicular to the rail longitudinal direction and suspends and supports the groove-shaped scaffold 18, is connected to the driven truck 12 in the rail longitudinal direction. C: Since they are rotatably connected via a right-angled horizontal axis 17, even if the rail 2 is inclined in its longitudinal direction, the plurality of wheels 7 of the driving bogie 10 and the plurality of wheels 11 of the driven bogie 12 is always in contact with the lower flange 6,
The driving truck 10 and the driven truck 12 can be run in a stable state.

Furthermore, among the plurality of hanging rods 14 and 16 arranged in the direction perpendicular to the rail, the lower portions of all but one hanging rod are movably connected to the channel-shaped scaffolding 18 in the direction perpendicular to the rail. The upper part of at least one of the hanging rods 14 and 16 is connected to the driving truck 10 or the driven truck 12 so that it can rotate freely, so that each driving truck running along each rail 2 Even if there is a slight difference in the traveling speed of the movable suspended scaffolding 10, the groove-shaped scaffolding 18 can be tilted slightly in the longitudinal direction with respect to the longitudinal direction of the rail 2, so that the movable suspended scaffolding can be run without any trouble. The movable suspended scaffold of the invention has a relatively simple structure and can increase strength against loads.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a vertical cross-sectional side view of a movable suspended scaffold, the second recess is a partial vertical side view showing the driving cart and the parts supported by it, and Figure 3 is a partially longitudinal side view showing the driven truck and the part supported by it, Figure 4 is a partially cutaway front view showing the driven truck and the part supported by it, and Figure 5 is Figure 4. FIG. 6 is a plan view of the traveling drive device installed on the drive cart, FIG. 7 is a schematic front view showing a plurality of movable suspended scaffolds, and FIG. 8 is a front view showing a groove-shaped scaffold. 9 is a front view of the same, FIG. 10 is a front view showing a connecting part between the hanging rod and the groove-shaped scaffolding that can be moved laterally, and FIG. FIG. 12 is a bottom view of the stomper device, and FIG. 13 is a side view showing the support structure and connection structure of the ranked rail unit. In the figure, 1 is an erection structure, 2 is a rail, 3 is a support structure, 4 is a pier, 5 is a rack, 6 is a lower flange, 7 is a wheel, 8 is a traveling drive device, 9 is a pinion, and 10 is a drive A cart, 11 is a wheel, 12 is a driven cart, 13 is a connecting member,
14 is a hanging rod, 15 is a horizontal axis, 16 is a hanging rod, 17 is a horizontal axis, 1
8 is a channel scaffold, 20 is a handle, 25 is a vertical screw, 27 is a frame, 28 is a vertical cylinder, 29 is a level adjustment nut, 3
0 is a lock nut, 31 is a fixing nut, 32 is a frame, 33A is a cylinder of a driving cart, 33B is a cylinder of a driven cart, 35 is a level adjustment nut, 36 is a lock nut, 3
7 is a support roller, 38 is a scaffolding floor, 39 is a side wall, 40 is an end side wall, 41 is an entrance/exit door, 42 is a support plate, 43 is an oblong hole, 44 is a support fitting, 45 is a support plate, 46 is a through hole, 47 is a support fitting, 49 is a holding cylinder, 50 is a locking handle, 51
52 is a vertical rod, 52 is a stopper, 53 is a groove for a stopper holder, 5
4 is a stopper release groove, 57 is a stopper retaining spring, 5
8 is a pedestal, 64 is a leg member, and 71 is a lower flange of the support structure.

Claims (1)

[Claims] Both ends of a plurality of rails 2 extending parallel to the longitudinal direction of the lower part of the construction structure 1 are fixed to a support structure 3 such as a cross beam or a diagonal structure in the construction structure 1,
A rack 5 extending in the longitudinal direction of the rail at the bottom of each rail 2
is fixed to the lower flange 6 of each rail 2, and includes a plurality of wheels 7 arranged at intervals in the longitudinal direction of the rail, and a pinion 9 that meshes with the rack 5 and is rotated by a traveling drive device 8. The wheels 7 of the driving truck 10 are placed on the lower flange 6 of each rail 2, and the wheels 11 of the driven truck 12, which is provided with a plurality of wheels 11 arranged at intervals in the longitudinal direction of the rails, are placed on the lower flange 6 of each rail 2. The driving truck 10 and the driven truck 12 are connected to each other by a connecting member 13.
The upper part of the suspension rod 14 is connected to the drive carriage 1 through
0 through a horizontal shaft 15 perpendicular to the longitudinal direction of the rail, and the upper part of the hanging rod 16 is connected to the driven bogie 12 through a horizontal shaft 17 perpendicular to the longitudinal direction of the rail, and The hanging rods 14, 1 are attached to the extending groove-shaped scaffold 18.
Among the plurality of hanging rods 14 and 16 arranged in the direction perpendicular to the rail, the lower part of one of the hanging rods is immovably connected to the channel scaffold 18 in the direction perpendicular to the rail. The lower parts of the hanging rods other than the hanging rod are movably connected to the channel scaffold 18 in the direction perpendicular to the rail, and the two types of hanging rods 14
, 16 is a movable suspended scaffold whose upper part is rotatably connected to the driving cart 10 or the driven cart 12.