JPS59130904A - Inspection scaffold for bridge - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The present invention relates to scaffolding used at bridge points for inspection, repainting, maintenance management, and other work on the back side of expressways, bridges, etc.

[Koneushi] A known type of conventional bridge inspection scaffolding is one that is attached to the bottom of the bridge girder so that it can be moved along the bridge. All of these are extremely large-scale structures and have complex structures. What's more, you have to keep things like this down all the time. Therefore, an unnecessary load is applied to the bridge, which is not only undesirable, but also requires extra members and the number of L, which is uneconomical. Moreover, installation on the 4ifi beam is time-consuming and inefficient. In addition, there is a bridge inspection vehicle that can drive on general roads with a walkway attached to it, and the walkway is lowered under the bridge at the site so that the work can be carried out using the walkway as an inspection scaffold. However, using this bridge inspection vehicle causes a traffic hindrance because the bridge remains set on the bridge during the work, and if the bridge is heavily congested, it will make the bridge even more congested. Purpose of the Elbow It is an object of the present invention to provide a bridge inspection scaffold that eliminates such drawbacks. Another object is to provide a bridge inspection scaffold that is small, lightweight, and movable in a desired direction on the back side of a bridge. The present invention provides two types of suspension devices on the scaffold body. The first suspension device suspends the scaffolding body from the bridge girder or a special rail parallel thereto in a removable manner. It is possible to run on a special rail parallel to this,
And it can be hung removably. If two types of suspension devices are installed in this way, when moving parallel to the bridge girder, the second suspension device can be removed from the crossbeam or tilting structure, and the scaffold itself can be suspended using the first suspension device. For example, when the first suspension device is moved to a desired position, and the first suspension device is moved in a direction perpendicular to the desired position, the second suspension device d is used to suspend the first suspension device from the bridge girder, etc. It can be removed and moved to the desired position using a second suspension device. Practical Example-9 Composition The scaffold body 1 of this example is a small one that is only slightly longer than the length of two bridge girders 3.3 of the bridge 2, and is mounted on a normal bridge inspection vehicle 4. It is now possible to do so. As is well known, the bridge inspection vehicle has 4 eyes, a first boom 5, and a second boom 6, and an auxiliary walkway 7 is rotatably attached to the tip of the bridge inspection vehicle.
It can be attached and detached freely. The bridge inspection vehicle 4 described above is a general type, and can be mounted with the first and second booms 5, 6, the scaffold body 1, etc. and run on general roads. 1. Peel off the boot 5 and extend it upward, and lower the second boom 6 attached to the tip of the boot 5 together with the Im auxiliary walkway 7, rotate the auxiliary walkway 7 and the scaffold main body 1, and move the second boom 6 under the bridge 5. Can be placed at right angles to the side. A first suspension device N8.8, a second suspension device 9.9, etc. are installed in the scaffold main body l of this embodiment. FIG. 1 shows the state in which the scaffold body 1 is carried under the bridge as described above and is attached by the first suspension device 8.8 to the dedicated rail 10.10 provided at the lower end of the crossbeam 6.6. The bridge 5 generally has a transverse girder or body tilting structure 11 outside the bridge girder 6 at the corner thereof, and as will be described later, when the suspension device 8 is used to move by staying on the bridge girder, the bridge girder 6 does not interfere with movement. Therefore, the special rail 10 should be installed at the bottom of the bridge girder 6 as described above. Therefore, in the case of a hand beam with a low crossbeam 11, this dedicated rail 10 is not necessary. As will be described later, the second suspension device 9 can be detachably attached to the lower part of the so-called trust-like body tilting structure (hereinafter referred to as a crossbeam) 11. The corner of the crossbeam 11 has two angles extending back to back, and the lower part has a fledge shape. As many special rails as necessary may be provided on the crossbeams. Below are several means of connecting the scaffolding main body 1 to the auxiliary walkway 7 and the first.
The second suspension device will be explained in detail. The auxiliary walkway 7 and the scaffold body 1 are both made of aluminum and have a frame 1 to allow people to enter and work therein. 12, it is detachably attached to the tip of the auxiliary walkway 7. As shown in FIG. 3, the mounting means 12 in this embodiment includes a bolt 13 having a locking piece at its tip, and a nut 14.
, and metal fittings 15 and 16 that can be accessed at the protruding places of the auxiliary walkway 7 and the scaffold body 1, respectively. The receiving fitting 16 has a downward elongated hole through which the bolt 13 is passed, and teeth 16a are provided on the rear surface of the receiving fitting 16. A block 17 having teeth that mesh with the teeth 16a is placed thereon, and the bolt 13 is inserted into the receiving fitting 16. A hole formed in this block 17 is passed through. On the other hand, the bracket 15 is
13 and a groove 15a through which the locking piece at the tip does not pass, and a protrusion 15b that prevents the locking piece from coming off. Therefore, the bolt 13 is attached to the bracket 16 of the auxiliary walkway 7, and when the scaffold body 1 can be accessed, the bolt 13 is inserted into the groove 15a with the locking piece on the outside of the bracket 15. ,
All you have to do is place the locking piece under the protrusion 15b and tighten it by turning the latch 14 with a ratchet handle (not shown). Conversely, when removing the scaffolding main body 1 from the auxiliary walkway 7,
14 to loosen it and remove the bolt 13 from the bracket 15. The first suspension device 8 has a bearing portion 19 provided on a mounting member 18 that is fixedly attached to the handrail 1a of the scaffold body 1.
A support plate 20.20 that can be freely raised to 19,
Wheels 21 mounted on both north corners of its mutually facing faces.
It is constituted by a pole I with a handle that regulates the distance between the support plates 20 and 20 of both 21 and 1 when they are erected, and a position regulating means 22 consisting of a nut. Bearing part 1
9 is the second interval when the support plate 20.20 is erected.
As shown, the wheels 21, 21 are selected to ride on the lower flange of the dedicated rail. As shown in 1-, the first suspension device 8 is such that the support plate 20.20 having wheels 211.21 can be freely raised to the mounting part 18, so it is normally attached to the handrail 1a of the scaffold body 1.
It is left lying on the floor. In order to take this to the dedicated rail 9, stand the support plate 20.20 so that it is on the edge of the dedicated rail 9, and place both cars 21.21 on the F flange of the dedicated rail 9. , and the position of the support plate 20.20 is fixed by the restriction means 22-.Another embodiment of the first suspension device 8 is shown in FIG. An example is a pair of lower fixing parts 23.23 and 2 which are attached to the handrail 1a of the scaffold body l.
A pair of moving parts 24, which are located above 3 and move up and down, and which move toward each other when moved upwards and move away from each other when moved downwards, and this upper part. It has a link mechanism 25 which movably connects the movable part 24.24 to the lower fixed part 23.23 as described above. A wheel 26 is rotatably mounted on the L movable section 24, and the upper movable section 24.24
A position regulating means 27 consisting of a handle bolt and a nut for regulating the position of the handle is shown. Furthermore, a small wheel 28 is attached to the two-part movable part 24, which moves in contact with the end of the lower flange of the dedicated rail 1O to prevent rattling when moving by the wheels 26. The small wheels may have a lattice shape and a positional relationship as shown at 29 in FIG. It is also possible to use a wheel 30 that rotates while being in contact with the web of the dedicated rail 10. Moreover, instead of using small wheels, cars, etc., one side of the wheel 26 itself is made to protrude in an arched manner as shown in FIG.
0 web may be contacted. The second suspension device 9 has a distal end 34 as shown in FIG.
A support plate 3 is a long and thin plate bent at a predetermined angle and can be raised freely to the side of the handrail 1a of the scaffold body 1 using a hinge.
3, and a wheel 35 that can be rotated around the tip 34 of the support plate 33. This support plate 33 can also be used as a handrail 1a, and when both are erected, both wheels 35 and 35 are formed into a flange shape by the angle of the lower part of the crossbeam 11 as described above. It is configured to ride on the "-" of the part. That is, the bending angle of the tip portions is such that the tip portions are perpendicular to each other when both support plates 33, 33 are erected. Further, position regulating means 36 for regulating the position are provided at the dot portions of both tip portions 34, 34. As shown in FIG. 9, this position regulating means 36 includes bolts 35, a, and 36 supported in four sections at both ends 34 and 34.
a, and a turn puncture 36b which is screwed onto these bolts and rotated to allow them to approach and turn R+I. Further, as shown in FIG. 1.0, a bolt 37 may be attached to one tip and a screwing means 38 for screwing the bolt 37 to the other end may be provided. In this case, the pole I 37 can be attached to the support 37a which is pivotally supported on the tip 34, and the screwing means 28 can then attach the end to the tip 34.
It is desirable to have it pivoted to. Therefore, in order to take this second suspension device to the crossbeam 11, as shown in FIG.
stand up, put its wheels 35 on the flange, and then
Similarly, the other support plate 34 may be raised/raised and the positions of both may be regulated by the position regulating means 36. What is shown in FIG. 12'' is another embodiment of the second suspension device, in which the support plate 39 has a standing portion 39a rising in the same direction as the side surface of the scaffold body 1, and a horizontal portion extending horizontally from the tip of the standing portion 39a. It is composed of a portion 39b and a distal end portion 39c bent at a right angle from the distal end thereof.As described above, the distal end portion 39c has a wheel 35 and a position regulating means 36. This is another embodiment of the suspension device of No. 2, in which the vertical part and the horizontal part of the support plate shown in Fig. 12 are connected by a link mechanism.In this case, when the crossbeam is also removed, the suspension device shown in Fig. 14 The first and second suspension devices described in □ are relative, and you are free to choose which one is the first and which is the second. For example, as shown in Figure 15, As shown, the first suspension device shown in FIG. 4 can be used as a second suspension device, and the first suspension device shown in FIG. It is easy to understand that it can be used as a second suspension device by changing the .Furthermore, the second suspension device shown in FIGS. 8 and 12 can also be used as the first suspension device by changing the □ The scaffold body l of this embodiment is mounted on the bridge inspection vehicle 4, so it is transported to the work site when necessary.It can be used for normal bridge inspection at the site. Like a car, the first and second
It is brought under the bridge 2 together with the auxiliary walkway 7 by the boom 5.6. Next, both support plates 20 of the first suspension device are erected, and the wheels 21 are mounted on the lower flange of the special rail.
and its position is regulated by the position regulating means 22. wheel 2
1 is located at the top of the dowel flange, and the position is regulated by the position regulating means 22, so that the scaffold body 1 can be suspended. Next, loosen the nut l-13 of the mechanism 11 and bolt 1.
When 2 is removed, the scaffolding body 1 is cut from the bridge inspection vehicle 4 +? +
Ill be taken. After that, the bridge inspection vehicle 4 is no longer of use, so the 1F auxiliary walkway 7 is mounted and moved from the bridge 5 so that it does not obstruct traffic. Since the first suspension device 8 has the wheels 21 as described above, the scaffold body 1 can be moved along the dedicated rail 9 to a desired position. - Note: Since the second suspension device 9 is not used for the movement along the bridge girder 3, it remains suspended below as shown. This is used when moving in a direction perpendicular to the bridge girder 3. , for movement using this second suspension device, the first
This will be explained with reference to FIG. Although FIG. 16 is an example shown in FIG. 2.3, the other cases are exactly the same. The first step was to cut the auxiliary walkway 7 from the state shown in Figure 1 and toss the fence.
This is (a) in Figure 6. The second suspension devices are installed in a total of four locations, two of which are located between both ends and the first suspension device. They are designated A, B, and C1D in order from the right side in the drawing. As mentioned above, the access to these cross beams 11 is done using both support plates 33 and 33.
It is sufficient to raise the wheels 35 and 35 and restrict the positions of the wheels 35 and 35 by the position restriction means 36. First, attach A and C to the crossbeam. First suspension device8.
Remove 8 (b). Next, it is moved along the crossbeam by wheels 35.35 (c). Since there is a bridge girder 3, it cannot be moved any further. Therefore, attach B and D to the crossbeam 11 (2). Then remove A and C (e). Therefore,
B and D allow the first suspension device 8.8 to be moved until it reaches the next bridge girder. There, we can again attach the first suspension device 8.8 to the bridge girder. If necessary, you can repeat the same process and move it to the right side of the drawing. In this way, the scaffold body 1 is moved in a direction perpendicular to the bridge girder. Example of λ-viewing] As explained in detail, according to the present invention, the scaffold body can be moved in the direction along the bridge girder and in the direction perpendicular to it using two types of suspension devices, so it is possible to reduce the size of the scaffold. It is possible to work easily and quickly on the entire back side of a bridge. Further, according to the present invention, the structure of the suspension device that can be accessed from the scaffold body is extremely simple, and can be operated reliably, and at the same time, the manufacturing cost can be kept at an extremely low cost. Since it is smaller and lighter than conventional scaffolding that spans the entire bridge, it is easier to manufacture and transport to the bridge, and there is no need to place an extra burden on the bridge. Furthermore, since it is also small and lightweight, it can be mounted on a bridge inspection vehicle and transported, and it can also be separated from the bridge inspection vehicle, so it can be used for work that is congested with traffic. It does not cause Furthermore, if a dedicated rail is used, if a special rail for movement is provided on the outside of the pier or its hollow part, and connected to the dedicated rail at the bottom end of the bridge girder or the bottom end of the crossbeam, it will be possible to move it without any problems even if there is a pier. It is possible to inspect an entire bridge using a single inspection scaffold.

[Brief explanation of drawings]

Fig. 1 is a side view showing the state of the construction of an embodiment of the present invention, Fig. 2 is a side view of the butt point between the scaffold body and the auxiliary walkway, and Fig. 3 is a perspective view of the same passageway. , FIG. 4 is a perspective view of a suspension device of another embodiment, FIGS. 5, 6, and 7 are side views showing the relationship between wheels, small wheels, and special rails, and FIG. A side view of another embodiment of the suspension device, FIG.
FIG. 8 is a sectional view of the position regulating means, FIG. 10 is a sectional view of another position regulating means, FIG. 11 is a perspective view of FIG.
Figure 2 is a side view of yet another suspension device, Figures 13 and 14.
The figure is a side view of yet another suspension device, and FIG.
A perspective view of an embodiment in which the suspension device shown in the figure is a second suspension device,
FIG. 16 is a schematic diagram for explaining the state in which the embodiment of FIG. 1 is moved in a direction perpendicular to the bridge girder. l Two scaffolding bodies, 3: Bridge girder, 8: First suspension device, 9
: Second suspension device, lO: Dedicated rail, 1st; Attachment means, 20.33: Support plate, °21.26.35. : Wheel, 23: Lower fixed part, 24: -H part movable part. Patent applicant Nippon Light Metal Co., Ltd. Agent Patent attorney Masayuki Konno Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10

Claims (1)

[Scope of Claims] (A scaffolding body on which one person can work, and the scaffolding body is suspended from a bridge girder or a dedicated rail that is flat on both sides so that it can run and be detached.) a first suspension device; a second suspension for removably suspending the scaffold body from a crossbeam or a dedicated rail parallel thereto;
An inspection scaffold for a bridge, characterized by having a molding device. (2) The bridge inspection scaffold according to claim 1, wherein the first suspension device has running wheels attached to opposing surfaces of a pair of erectable support plates. (3) The bridge inspection scaffold according to claim 1, wherein the suspension device 282 has running wheels mounted on opposing surfaces of a pair of brushable support plates. (4) a pair of lower fixing portions of the first suspension device body;
It consists of a pair of upper movable parts each capable of handling a running wheel, and a link mechanism that moves the upper movable part up and down and attaches it to the lower fixed part so that the running wheels approach each other when moving upward. A bridge inspection scaffold according to claim 1. (5) When the second suspension device body moves up and down, the pair of lower fixed parts, the pair of two-part movable parts each having a running wheel attached thereto, and the upper movable part, and moves upward. The bridge inspection scaffold according to claim 1, further comprising a link mechanism that attaches the wheels to the lower fixed part so that the wheels approach each other.