JP3136578B2 - Work corridor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work corridor, and more particularly, to a work corridor which can be extended and contracted by an outer corridor and an inner corridor accommodated inside the corridor.

[0002]

2. Description of the Related Art As a work corridor which enables a worker to walk or perform various works when constructing a building such as a ship or a building, an inner corridor is housed inside one end of an outer corridor so as to be able to expand and contract. There is known a work corridor (see Japanese Patent Publication No. 2-5215). This work corridor is provided with guide grooves which are open inward along the longitudinal direction on both sides of the outer corridor, and are configured such that both sides of the inner corridor are slidably fitted into these guide grooves. . Therefore, it is possible to form a corridor of an arbitrary length by pulling out the inner corridor from the outer corridor, and furthermore, by storing the inner corridor in the outer corridor, it becomes compact to facilitate transportation and storage.

[0003]

However, in this type of conventional working corridor, both side frames of the inner side corridor are slidably fitted into guide grooves of both side frames of the outer side corridor. Therefore, assembling is troublesome, and since the sliding portion has a large frictional resistance, a large force is required for the expansion and contraction movement. As a means for solving this problem, it is conceivable to use a guide roller that engages with the guide groove in order to reduce the frictional resistance of the sliding portion. In this case, however, the gap between the guide groove and the guide roller is large. When the gap is small, there is a problem that a high processing accuracy for securing a predetermined gap in the sliding portion is required.

Accordingly, the present invention has been made in view of the above circumstances, has no problem in processing accuracy, is easy to assemble,
It is an object of the present invention to provide a work corridor that can perform a telescopic operation with a small force.

[0005]

In order to achieve the above object, a work corridor according to the present invention comprises a work corridor in which at least one inner corridor is housed at one end inside an outer corridor so as to be able to expand and contract. It is assumed that guide grooves facing each other along the longitudinal direction are formed on both side frames of the outer corridor and the inner corridor, and upper guides of the opposing guide grooves are provided on both side frames at ends approaching each other when both corridors are extended. It is characterized in that a pair of guide rollers that individually contact the surface and the lower guide surface are provided, and at least one of the guide rollers of each pair is provided with an adjusting mechanism for adjusting a gap between the guide surface and the guide rollers.

[0006]

According to the work corridor of the present invention constructed as described above, the pair of guide rollers are arranged so as to be individually in contact with the upper guide surface and the lower guide surface of the guide groove on the other side. By using an adjusting mechanism provided on at least one of the pair of guide rollers, the contact pressure or the clearance between the guide rollers of the two guide rollers can be easily adjusted. Therefore, unlike the one using the guide roller engaged with the guide groove, high processing accuracy for forming a predetermined gap between the guide roller and the guide surface is not required.
Also, unlike the one in which both sides of the inner corridor are slidably fitted in the guide grooves on both sides of the outer corridor, it is possible to easily assemble and to perform the expansion / contraction operation with a small force. Further, by adopting a large-diameter guide roller as a guide roller to which a large load is applied in contact with the upper guide surface of the guide groove, durability can be improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

In FIG. 1 and FIG. 2, reference numeral 1 denotes construction or construction of a building such as a ship or a building, which is erected or suspended between beams of the construction to enable various operations such as walking of a worker or transportation of materials. Work corridor, this work corridor 1
The main part is constituted by the outer side corridor 2 and the inner side corridor 3 housed inside the outer side corridor 2 so as to be able to expand and contract from one end thereof. In this case, an integral inner corridor is provided for a short inner corridor, and two inner corridors are provided on both sides in a similar structure for a long outer corridor. Less than,
A case where an integral inner corridor is provided will be described as a representative example.

The outer corridor 2 and the inner corridor 3 are shown in FIG.
As shown in FIG. 4, side frames 6 and 7 made of extruded members made of, for example, an aluminum alloy and having guide grooves 4 and 5 facing each other in the longitudinal direction on both sides are provided. That is, the guide grooves 4 that are open inward along the longitudinal direction are formed in both side frames 6 of the outer walkway 2, and the guide grooves 5 that open outwardly along the longitudinal direction are formed in both side frames 7 of the inner walkway 3.
Are formed.

As shown in FIG. 6, upper guide surfaces 4a, 5 of the opposing guide grooves 4, 5 are provided near both ends of the ends 2a, 3a approaching each other when the two walkways 2, 3 are extended.
a and a pair of guide rollers 8 and 9 that individually contact the lower guide surfaces 4b and 5b. In this case, the guide rollers 8 and 9 can have the same diameter or different diameters as desired. However, it is preferable to increase the diameter of the guide rollers at the end portions of the respective side frames. Will be described.

That is, the outer corridor 2 is provided with a large-diameter guide roller 8 in contact with the upper guide surface 5a of the guide groove 5 of the inner corridor 3 and a small-diameter guide roller 9 in contact with the lower guide surface 5b. Are provided with a large-diameter guide roller 8 that contacts the upper guide surface 4a of the guide groove 4 of the outer walkway 2 and a small-diameter guide roller 9 that contacts the lower guide surface 4b. Since the related configuration of the guide rollers 8 and 9 in the outer corridor 2 and the inner corridor 3 is the same, the guide rollers 8 and 9 provided in the inner corridor 3 will be described below.

Large-diameter guide roller 8 in inner corridor 3
Are arranged on the tip side of the inner side corridor 3 with respect to the small-diameter guide roller 9. The large-diameter guide roller 8 is attached to the side plate 7 via a bracket 10, and the small-diameter guide roller 9 is provided with an adjusting mechanism 11 for adjusting a gap between the small-diameter guide roller 9 and the lower guide surface 4b. This adjustment mechanism 11
As shown in FIG. 5, upper and lower guide surfaces 5a, 5 of the guide groove 5 are provided.
b, a pair of left and right guide pieces 12 extending between the guide pieces 12 and a groove 13 slidably engaged with the guide pieces 12 on both sides to be supported between the two guide pieces 12 so as to be vertically movable. A small-diameter guide roller 9 is rotatably supported on the moving body 14. As means for adjusting the movement of the moving body 14 up and down, one end of a screw shaft 15 is connected to the upper part of the moving body 14 and the other end of the screw shaft 15 gently penetrating the upper guide surface 5a is connected to the upper guide. A pair of nuts 16 sandwiching the surface 5a from above and below are screwed. In addition,
The side frame 7 is provided with a spanner insertion opening 17 for rotating a nut 16 located in the guide groove 5.

The lower end of the side frame 6 of the outer corridor 2 is located lower than the lower end of the side frame 7 of the inner corridor 3 and faces the lower end of each of the side frames 6 and 7. Scaffolding plates 20 and 21 are provided on the formed U-shaped scaffolding plate mounting portions 18 and 19.
Are fixed by rivets, bolts and nuts, welding, or the like. The scaffold plates 20 and 21 are, for example, fixed width panels made of extruded members made of an aluminum alloy, and rib-shaped non-slip which also serves as reinforcement is formed on the upper surface at appropriate intervals in the longitudinal direction (not shown). ). An inclined scaffolding plate 22 for eliminating a step between the scaffolding plate 20 of the outer corridor 2 and an end of the inner corridor 3 is disposed.

In order to set the work corridor 1 to a desired length, the side frame 7 of the inner corridor 3 is provided with pin holes 23 at appropriate intervals in the longitudinal direction. A pin hole 24 for inserting a stopper pin (not shown) is provided at the end so as to coincide with one of the pin holes 23 described above. At both ends of the work corridor 1, there are provided tip connection fittings 26 having bolt holes 25 for connecting with bolts or the like to the beam material of the building or other connected work corridor. Further, an outward flange 27 is formed on the upper end of the side frame 6 of the outer corridor 2, and an inward flange 28 is formed on the upper end of the side frame 7 of the inner corridor 3, as shown in FIG. Each of the flanges 27 and 28 is provided with a foldable handrail frame 29 such as a lock pin mechanism with a spring, which is fixed or detachable. In addition, inside corridor 3
On the outer surface of the side frame 7, a ridge 30 is formed, and on the inner surface of the side frame 6 of the outer corridor 2, a groove 31 corresponding to the ridge 30 is formed. Even if it falls off, both corridors 2 and 3 are engaged with each other so that they do not come off. In FIGS. 3 and 4, reference numeral 32 denotes a sliding plate made of resin.

The work corridor 1 having the above-described structure is composed of at least the integral inner corridor 3 housed in the outer corridor 2.
Is pulled out from one end of the outer corridor 2 and set to a required length by a stopper pin, and is erected between beams of the building or suspended between temporary scaffold pipes for use. In particular, the work corridor 1 has guide grooves 4 and 5 opposed to both side frames of the outer corridor 2 and the inner corridor 3 along the longitudinal direction.
Are formed, and the upper guide surfaces 4a, 5a and the lower guide surfaces 4b, 5b of the opposing guide grooves 4, 5 are individually contacted on both sides of the ends 2a, 3a approaching each other when the two corridors 2, 3 are extended. A pair of large-diameter and small-diameter guide rollers 8 and 9 are provided, and the gap between the lower guide surfaces 4b and 5b is adjusted by at least one of the pair of guide rollers 8 and 9, in this embodiment, the small-diameter guide roller 9. For example, when the small-diameter guide roller 9 is pressed against the lower guide inner surface 4b by the adjustment mechanism 11, the large-diameter guide roller 8 is pressed against the upper guide surface 4a by the reaction force. The guide mechanism 8 and 9 are adjusted by the adjusting mechanism 11.
Can easily adjust the contact pressure or gap with respect to the guide surfaces 4a, 4b, 5a, 5b.

Therefore, unlike the case of simply using the guide roller engaged with the guide groove, a high machining for forming a predetermined gap between the guide rollers 8, 9 and the guide surfaces 4a, 4b, 5a, 5b. Accuracy is not required, and unlike the one in which both side frames of the inner corridor are slidably fitted in the guide grooves of both frames of the outer corridor, it is easy to assemble and the work corridor can be operated with a small force. 1 can be easily performed. Furthermore, when a large-diameter guide roller 8 is used as the guide roller on the end side where a large load is applied in contact with the upper guide surfaces 4a, 5a of the guide grooves 4, 5, the durability can be improved.

A ridge 30 is formed on the outer surface of the side frame 7 of the inner corridor 3, and a groove 31 corresponding to the ridge 30 is formed on the inner surface of the side plate 6 of the outer corridor 2. Therefore, even if the guide rollers 8 and 9 fall off, the two corridors 2 and 3 do not separate from each other. Furthermore, since the handrail frames 29 provided on the outer corridor 2 and the inner corridor 3 are provided on the respective flanges 27 and 28 and are independent of each other (see FIG. 7), they interfere with each other when the working corridor 1 expands and contracts. I will not do it.

In the above embodiment, the adjusting mechanism 11 is provided on the small-diameter guide roller 9; however, the adjusting mechanism may be provided on the large-diameter guide roller 8 or on both guide rollers 8,9.

When the two inner corridors are provided in the outer corridor, the above-mentioned structure may be provided on both sides of the outer corridor.

[0020]

As described above, according to the work corridor of the present invention, in the work corridor, at least one integral inner corridor is housed inside the outer corridor at one end so as to be freely movable. Guide grooves facing each other along the longitudinal direction are formed on both side frames of the outer corridor and the inner corridor, and upper guide surfaces and lower guides of the opposing guide grooves are formed on both side frames at ends approaching each other when the two corridors are extended. A pair of guide rollers that are individually in contact with the surfaces are provided, and at least one of the pair of guide rollers is provided with an adjustment mechanism for adjusting a gap between the guide surfaces, so that the following effects are obtained. Can be

1) Since the pair of guide rollers are arranged so as to individually contact the upper guide surface and the lower guide surface of the guide groove on the other side, an adjusting mechanism provided on at least one of the pair of guide rollers. Accordingly, the contact pressure or the gap between the guide rollers of the two guide rollers can be easily adjusted. Therefore, unlike the one using the guide roller engaged with the guide groove, high processing accuracy for forming a predetermined gap between the guide roller and the guide surface is not required,
Also, unlike the one in which both side frames of the inner corridor are slidably fitted in the guide grooves on both sides of the outer corridor, it is possible to easily assemble and to perform the expansion / contraction operation with a small force.

2) When a large-diameter guide roller is used as a guide roller to which a large load is applied in contact with the upper guide surface of the guide groove, the durability can be further improved.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a work corridor according to an embodiment of the present invention.

FIG. 2 is a plan view of the work corridor of FIG. 1;

FIG. 3 is an enlarged sectional view taken along line AA of FIG. 1;

FIG. 4 is an enlarged sectional view taken along line BB of FIG. 1;

FIG. 5 is a sectional view taken along line CC of FIG. 3;

FIG. 6 is a perspective view showing an arrangement configuration of a guide roller in the present invention.

FIG. 7 is a front view showing a state in which the handrail is folded.

[Explanation of symbols]

 Reference Signs List 1 work corridor 2 outer corridor 3 inner corridor 4,5 guide groove 4a, 5a upper guide surface 4b, 5b lower guide surface 6,7 side frame 8 large diameter guide roller 9 small diameter guide roller 11 adjustment mechanism

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04G 1/15

Claims (1)

(57) [Claims] 1. A work corridor in which at least one inner corridor is accommodated inside one end of an outer corridor so as to be able to expand and contract from one end thereof, wherein both side frames of the outer corridor and the inner corridor are opposed to each other along a longitudinal direction. A pair of guide rollers are provided on both side frames at the ends that approach each other when both walkways are extended, and a pair of guide rollers that individually contact the upper guide surface and the lower guide surface of the opposing guide groove, respectively. A work corridor, wherein at least one of the rollers is provided with an adjusting mechanism for adjusting a gap between the roller and a guide surface.