JP2507619Y2 - Temporary stairs - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of temporary stairs provided on temporary scaffolds when constructing ships, buildings and the like.

[0002]

2. Description of the Related Art When a ship or building is constructed, a temporary scaffold is provided so that the worker can perform a desired work at a high place. It is important that a temporary staircase is provided so that the temporary staircase can be moved to the above position, and various proposals have been made for this temporary staircase.

The temporary staircase according to this conventional proposal is
In general, a staircase body distributed between an upper horizontal member that constitutes a temporary scaffold and a lower horizontal member that constitutes a temporary scaffold,
The upper body has an engaging body fixed to the upper horizontal member, and the lower body has a locking body fixed to the lower horizontal member.

Therefore, according to the temporary staircase according to this conventional proposal, the engaging body fixed to the upper end portion of the staircase main body is engaged with the upper horizontal member, while being fixed to the lower end portion of the staircase main body. There is an advantage that it can be easily provided at a desired position of the temporary scaffold only by locking the locked body to the lower horizontal member.

[0005]

[Problems to be Solved by the Invention] However, in the case of using the above-mentioned temporary staircase of the conventional structure, there is a disadvantage that the total number of members constituting the temporary scaffold cannot be expected to be reduced, and the safety of workers is ensured. There is an inconvenience.

That is, in recent years, the temporary scaffold is generally made into a frame scaffold, and as is well known, in this frame scaffold, each constituent member is formed in meter size and in inch size. Some are formed. The temporary stairs assembled with the components formed in the respective sizes are provided with the temporary stairs formed in the respective sizes.

Therefore, the conventional temporary stairs are not compatible with each other. Therefore, for example, a component member of a frame scaffold initially formed in a meter size is prepared, and then a component member of a frame scaffold formed in an inch size is prepared. In such a case, it is necessary to prepare not only the temporary stairs formed in the meter size but also the temporary stairs formed in the inch size.

As a result, when preparing the frame scaffolds formed by the meter size and the inch size at the same time, it is not possible to expect a reduction in the total number of the frame scaffolds, that is, the members constituting the temporary scaffolding, and maintenance management is performed. Inconvenience such as becoming more troublesome is brought about.

Further, in the above-described conventional seed staircase, the installation work of the temporary staircase is performed inside the frame scaffold, which is a temporary scaffold, and the use position is also inside the frame scaffold. Therefore, the attachment of the handrail is omitted, and therefore, there is an inconvenience that the safety of the worker who uses the temporary stairs cannot be ensured.

The present invention has been made in view of the above circumstances, and its purpose is to reduce the total number of members constituting the temporary scaffolding and facilitate maintenance thereof. On the other hand, it is an object of the present invention to provide a temporary staircase that does not hinder the installation work and can ensure the safety of workers who use the installation work.

[0011]

In order to achieve the above-mentioned object, the configuration of the present invention is basically the upper transverse member in a temporary scaffold having a plurality of treads between a pair of supporting members. And a lower horizontal member, a staircase main body, an engaging member fixed to the upper end of each supporting member and separably engaged with the upper horizontal member, and a lower end of each supporting member. An engaging body that is adjacently held so as to be movable along the arranging direction of the supporting member and is separably locked to the lower horizontal member, a handrail frame that extends along each supporting member, and In a temporary staircase having a handrail body that is a pillar vertically extending from a handrail frame, and a socket that is fixed to each support member and that allows the lower end of the pillar to be separably inserted.

More specifically, the engaging member has a fitting portion at its tip end for fitting with the upper horizontal member, and a circle as a stopper for preventing the fitting portion from being separated from the upper horizontal member. It has an arcuate rotor, the locking body has a fitting portion at the tip end that fits the lower horizontal member, and has a plurality of bolt insertion holes on the base end side. The lower end of each support member has a plurality of through holes opened so as to be aimed at a plurality of bolt insertion holes formed in the locking body, and a plurality of bolt insertion holes formed in the locking body. Consists of a group of holes consisting of a plurality of round holes and a plurality of elongated holes that are connected in series at appropriate intervals and a single round hole that is parallel to this at a suitable interval, and a plurality of perforations are formed at the lower end of each support member. Through holes of a plurality of round holes and a single elongated hole which are connected in series at an appropriate interval, and at an interval corresponding to the above-mentioned appropriate interval. A locking body when a bolt inserted into a selected bolt insertion hole of any of a plurality of bolt insertion holes and a through hole aimed at the bolt insertion hole is fastened by using a nut. Will be fixed to the support material.

Further, the pillar of the handrail has a pin which is spring-biased from the inner side to the outer side at the lower end, and the socket fixed to the supporting member has a through hole through which the pin is projected and retracted. It is assumed that the handrail is erected on the staircase main body when the lower end of the column is inserted into the socket and the pin is present in the through hole.

[0014]

Therefore, the engaging body fixed to the upper end of the staircase main body is engaged with the upper horizontal member constituting the frame scaffolding, which is a temporary scaffold, while being movably held at the lower end portion of the staircase main body. The temporary stairs can be provided at a desired position of the frame scaffold by locking the locking body to the lower horizontal member that constitutes the frame scaffold which is a temporary scaffold.

When the temporary staircase is set to be used for a frame-shaped scaffolding formed in a meter size, a locking body movably held at the lower end of the staircase body is used. The length dimension of the staircase body is apparently extended by so-called pulling out from the lower end portion of the staircase, and any one of a plurality of bolt insertion holes opened in the locking portion is selected and the bolt insertion hole is selected. Through, and
The temporary staircase can be set as a temporary staircase formed in an inch size by screwing the bolt into a screw hole formed at the lower end of the staircase body and tightening the screwhole.

Further, if the number of bolt through holes to be opened in the locking portion and the disposition position are set in consideration of the frame scaffold formed in a size larger than the inch size, the temporary stairs can be set to these inches. It can also be used for a frame scaffold formed with a size larger than the size.

Further, by mounting the handrail on the socket fixedly mounted on the staircase main body, it becomes possible to install a temporary staircase with a handrail, and by separating the handrail body from the staircase main body, the temporary installation can be performed. To facilitate handling of stairs, that is, transportation of stairs main body.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, a temporary staircase S according to an embodiment of the present invention, as shown in FIGS. 1 and 2, has an upper horizontal member F1 and a lower horizontal member F1 which constitute a temporary scaffold F. A staircase main body 1 obliquely distributed between the staircase body F2, an engagement body 2 fixed to the upper end portion of the staircase body 1 and engaged with the upper horizontal spanning material F1, and a lower end portion of the staircase body 1. And a handrail body 4 which is movably held by the lower horizontal member F2 and is erected so as to be separable from the staircase body 1.

The staircase main body 1 is made of a mold material so as to have a predetermined durability, and is a pair of support members 11, 1 on the left and right sides.
2 and a plurality of tread plates 13 that are arranged in line between the pair of support members 11 and 12 at appropriate intervals and that are integrally connected to the pair of support members 11 and 12 by welding or the like. Become.

The staircase main body 1 includes the support members 11, 1
The engaging body 2 is fixed to the outside of the upper end portions 11a and 12a of the second support member 11, and the lower end portions 11b and 12b of the support members 11 and 12 are fixed.
The locking body 3 is movably arranged outside the.

The engaging body 2 is formed so as to exhibit a so-called hook function. In this embodiment, the engaging body 2 is formed in a plate shape, and the tip end portion 2a of the engaging body 2 is an upper horizontal member formed of a pipe-shaped body. It has a fitting portion 2b that fits the material F1, and a rear end side 2c thereof is fixed to the upper end portions 11a and 12a of the support materials 11 and 12 by using a plurality of caulking pins 21.

Incidentally, in this embodiment, the engaging body 2
As shown in FIG. 2, the distal end portion 2a thereof has an arcuate rotor 22, and the arcuate rotor 22 has an upper horizontal member F.
When it is rotated about the axis of No. 1 as the rotation center as shown by the imaginary line arrow in the figure, the upper horizontal member F1 comes out from the fitting portion 2b, that is, from the upper horizontal member F1 of the engaging body 2. Is formed so as to prevent the separation of the.

The locking body 3 is formed so as to exhibit a so-called stopper function. In this embodiment,
The lower ends 11b of the support members 11 and 12 are formed in a plate shape,
It is movably held on 12b.

That is, the locking body 3 is, as shown in FIG.
The tip portion 3a has a fitting portion 3b that fits into the lower horizontal member F2 made of a pipe, while the base end side 3c slides in a slide groove 12c formed in the lower end portion 12b of the support member 12. It is freely fitted and formed so as to be movable in the axial direction of the support member 12, and has a plurality of bolt insertion holes 3d, 3e, 3f, 3g and 3h on the base end side 3c thereof.

Then, the plurality of bolt insertion holes 3d, 3
e, 3f, 3g and 3h are bolts 3 of the same diameter.
1, 32 are formed so that the bolts 1 and 32 can be inserted, and in particular, the bolt insertion holes 3d, 3e, 3f, and 3g are provided in the locking body 3.
It is supposed that the shaft core portion is aligned so as to match the axial direction of the locking body 3, and the bolt insertion hole 3h is arranged at a position eccentric from the shaft core portion of the locking body 3.

Also, the bolt insertion holes 3f, 3g and 3h.
Are round holes each having a diameter substantially equal to the diameter of the bolts 31 and 32, while the bolt insertion holes 3d and 3 are
Each e is supposed to be a long hole.

That is, the bolt insertion hole 3d is formed as a long hole having a length dimension at least twice the diameter of the bolt 31.
The bolt insertion hole 3e is formed as a short elongated hole having a length dimension equal to or less than twice the diameter of the bolt 32.

On the other hand, the bolts 31 and 32 are, as shown in FIG. 4, the lower end portion 12b of the support member 12 constituting the staircase body 1.
The plurality of through holes 12d, 12e, 12f and 12g which are opened in the
, Nuts 31a, 32a screwed onto the
It is supposed that the locking body 3 is fixed to the support material 12 when the are tightened.

Further, the support member 12 has a plurality of through holes 12 formed therein.
Among the holes d, 12e, 12f and 12g, the through holes 12e and 12f are round holes each having a diameter substantially matching the diameter of the bolts 31 and 32, while the through holes 12d and 1
Each of 2 g is supposed to have a long hole.

That is, the through hole 12d is formed as a short long hole having a length dimension not more than twice the diameter of the bolt 31.
2 g is formed in a long slot having a length dimension not less than twice the diameter of the bolt 32 and not more than the following.

Although not shown, the locking body 3 is the support member 1
It is needless to say that the first side is also similarly formed, and the support member 11 is also provided with a predetermined through hole.

Therefore, in the locking body 3, the lower ends 11b, 1 of the support members 11, 12 are secured by tightening the bolts 31, 32 inserted into the bolt insertion holes with the nuts 31a, 32a.
The bolts 31,
Depending on the selection of the bolt insertion hole through which 32 is inserted, the fixing position of the locking body 3 with respect to the support members 11 and 12 is different.

That is, for example, as shown in FIG. 6, when the bolt 31 is inserted into the bolt insertion hole 3f of the locking body 3 while the bolt 32 is inserted into the bolt insertion hole 3g, the support member 11, 12, that is, the apparent length dimension of the staircase main body 1 can be set to the shortest state. In this case, for example, the frame scaffold assembled by the constituent members formed in the meter size, that is, the core center dimension is Vertical direction 17
00 mm, lateral direction 1800 mm, diagonal direction 2476 m
It is possible to arrange the temporary stairs on the frame scaffolding of m.

Then, as shown in FIG. 7, when the bolt 31 is inserted into the bolt insertion hole 3e and the bolt 32 is inserted into the bolt insertion hole 3f, the apparent length of the staircase body 1 is set to the shortest state. It can be made slightly longer, in which case the frame scaffolding assembled from the components formed in inches, that is, the core dimensions are in the longitudinal direction 172.
5mm, lateral direction 1829mm, diagonal direction 2514mm
It becomes possible to arrange the temporary stairs on the frame scaffold.

Therefore, if it is set that the temporary staircase according to the present invention is compatible only with the temporary scaffold formed by the meter size and the temporary scaffold formed by the inch size, in the locking body 3, , Bolt insertion holes 3e formed of short elongated holes, and bolt insertion holes 3f and 3g formed of round holes.
If, and are provided, it will be sufficient.

Then, as shown in FIGS. 8 to 11, the bolt 32 is inserted into the bolt insertion hole 3h, the bolt 31 is inserted into the bolt insertion hole 3d or 3e, and the bolt 31 is inserted into the bolt insertion hole 3d or 3d. By displacing the staircase main body 1 from either one within 3e, the apparent length dimension of the staircase body 1 can be made gradually longer than in the case of the inch size.

As a result, the temporary stairs are unified on the frame scaffold formed in a size larger than the inch size, for example, the core-to-core dimension is unified in the vertical direction of 18005 mm, while the horizontal direction is 1829 mm and the diagonal direction is 2566 mm. In the case (see FIG. 8), the lateral direction is 1835 mm and the diagonal direction is 25
When it is 70 mm (see FIG. 9), the lateral direction is 1841.
mm when the diagonal direction is set to 2575 mm (see FIG. 10), and the lateral direction is 1847 mm and the diagonal direction is 2579.
When it is set to mm (see FIG. 11), it can be used for each frame scaffold.

The handrail 4 is, as shown in FIGS. 1 and 2,
The staircase main body 1, that is, the handrail frame 41 that obliquely extends along the support members 11 and 12, and the pillar 42 that is vertically installed on the handrail frame 41, the lower end portion of the pillar 42 is provided. The staircase main body 1, that is, the socket 5 fixed to the support members 11 and 12 is detachably held.

That is, the support column 42 is formed of a pipe-shaped body such as a round pipe, and has a guide pipe 44 connected to the lower end thereof by using the caulking pin 43, as shown in FIG. Further, the lower end portion of the guide pipe 44 protruding from the lower end of the column 42 is detachably attached to the socket 5.

Further, the guide pipe 44 has a through hole 44a opened at the lower end thereof and a leaf spring 45 bent in a V shape inside thereof. The tip of a pin 46 attached to the leaf spring 45 is formed so as to project to the outside through the through hole 44a by the biasing force of the leaf spring 45.

On the other hand, as shown in FIG. 12, the socket 5 has a main body portion 51 formed to allow the lower end portion of the guide pipe 44 to be inserted, and the main body portion 51 and the main body portion 51. The staircase main body 1, that is, the bracket 52 for fixing the staircase 51 to the supporting members 11 and 12 is provided.

The main body portion 51 has a guide pipe 44.
Has a through hole 51a opened so as to be aimed at the opened through hole 44a. The guide pipe 4 is provided in the through hole 51a.
It is supposed that the tip of the pin 46 attached to the leaf spring 45 in 4 is guided.

Therefore, by inserting the guide pipe 44, which is continuously provided at the lower end of the support column 42 constituting the handrail 4 into the main body portion 51 constituting the socket 5, the handrail body 4 is formed.
The temporary stairs provided on the temporary scaffolding can be provided with handrails.

Then, the leaf spring 45 in the guide pipe 44 is used.
When the tip end of the pin 46 attached to the guide pipe 44 and protruding from the through hole 44a formed in the guide pipe 44 is made to exist in the through hole 51a formed in the main body 51 of the socket 5, It is possible to prevent the detachment of the stairs and the temporary stairs installed on the temporary scaffold can be provided with handrails.

Further, while the tip portion of the pin 46 existing in the open through hole 51a is pushed into the main body portion 51 of the socket 5, the guide pipe 44 connected to the lower end of the column 42 is connected. The handrail 4 can be separated from the socket 5 by pulling it out of the main body portion 51 of the socket 5, and the temporary stairs, that is, the staircase main body 1 can be easily handled.

[0046]

As described above, according to the present invention, the engaging member fixed to the upper end of the staircase main body is engaged with the upper horizontal member constituting the temporary scaffold, while the lower end portion of the staircase main body is engaged. Needless to say, the temporary staircase can be provided at a desired position of the temporary scaffold only by locking the locking body movably held on the lower horizontal member constituting the temporary scaffold. ,
Even when the temporary staircase is set to be used for a frame-sized scaffolding formed in a meter size, the locking body movably held at the lower end of the staircase main body is so-called from the lower end of the staircase main body. The length dimension of the staircase body is apparently extended by pulling it out, and any one of a plurality of bolt insertion holes that are opened in the locking portion is selected to insert a bolt therethrough, and The temporary stairs can be set as inch-sized temporary stairs by screwing the bolts into the screw holes formed at the lower end of the staircase body and tightening them.

At this time, if the number of bolt through holes to be opened in the locking portion and the disposition position are set in consideration of the frame scaffold formed in a size larger than the inch size, the temporary stairs are set to these inches. It can also be used for a frame scaffold formed with a size larger than the size.

Further, according to the present invention, by mounting the handrail on the socket fixed to the staircase main body, it becomes possible to install the temporary staircase with the handrail and separate the handrail body from the staircase main body. By doing so, handling such as transportation of the temporary stairs becomes easy.

As a result, in the present invention, it is possible to reduce the total number of members constituting the temporary scaffolding and facilitate the maintenance and management thereof, while not hindering the installation work, and There is an advantage that it is optimal for ensuring the safety of workers who use.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a temporary staircase according to an embodiment of the present invention is arranged on a temporary scaffold.

FIG. 2 is a front view showing the temporary staircase shown in FIG. 1 with a part thereof omitted.

FIG. 3 is an enlarged front view showing an example of a fixing state of a locking body to a support member.

FIG. 4 is an enlarged front view showing an example of an opened state of a through hole in a support member on which a locking body is fixed.

FIG. 5 is an enlarged vertical cross-sectional view showing a fixing state of the locking body to the support material.

FIG. 6 is an enlarged front view showing a fixing state of the locking body with respect to the support member when facing the temporary staircase of a meter size.

FIG. 7 is an enlarged front view showing a fixing state of the locking body with respect to the support material when facing the temporary stairs of inch size.

FIG. 8 is an enlarged front view showing a fixing state of the locking body with respect to the support member when facing the temporary stairs formed larger than the inch size.

FIG. 9 is an enlarged front view showing a fixing state of the locking body to the support member when facing the temporary stairs formed to be larger than that in FIG. 8;

FIG. 10 is an enlarged front view showing a fixing state of the locking body with respect to the support material when facing the temporary stairs, which is formed larger than in the case of FIG.

FIG. 11 is an enlarged front view showing a fixing state of the locking body with respect to the support member when the temporary stairs are formed to be larger than the case of FIG. 10;

FIG. 12 is an enlarged front view showing a state in which a handrail is attached to a socket with a part thereof broken away.

[Explanation of symbols]

 1 staircase main body 2 engagement body 3 locking body 3a tip portion 3b fitting portion 3d, 3e, 3f, 3g, 3h bolt insertion hole 4 handrail body 5 socket 31, 32 bolt 31a, 32a nut F temporary scaffold F1 upper lateral member F2 Lower horizontal material S Temporary stairs

Claims (1)

(57) [Scope of utility model registration request] 1. A staircase main body having a plurality of treads between a pair of supporting members and distributed between an upper horizontal member and a lower horizontal member in a temporary scaffold, and an upper end portion of each supporting member. An engaging body that is fixed and that is separably engaged with the upper horizontal member, and a lower horizontal member that is adjacently held at the lower end of each support member so as to be movable along the distribution direction of the support member. A locking body that is separably locked, a handrail that includes a handrail frame that extends along each supporting member, and a pillar that is vertically installed on the handrail frame; and a lower end of the pillar that is fixed to each supporting member. In a temporary staircase having a socket through which a portion is separably inserted, the engaging body has a fitting portion at the tip end that fits into the upper horizontal member, and It has an arcuate rotor as a stopper to prevent separation, and the locking body has a fitting portion at the tip end that fits the lower horizontal member. Both of them have a plurality of bolt insertion holes on the base end side, and the lower ends of the respective support members that adjoin the locking bodies are opened so that they are aimed at the plurality of bolt insertion holes formed in the locking bodies. A group of a plurality of round holes and a plurality of elongated holes, each having a plurality of through holes, and a plurality of bolt insertion holes formed in the locking body that are connected in series at an appropriate interval and are arranged in parallel at an appropriate interval. A hole group consisting of a single round hole and a plurality of round holes in which a plurality of through holes opened at the lower end of each support member are connected in series at appropriate intervals, and a hole group consisting of a single elongated hole, and the above-mentioned appropriate It consists of a single elongated hole arranged in parallel at the interval that matches the interval of the bolt, and the bolt inserted into the selected bolt insertion hole of any of the plurality of bolt insertion holes and the through hole aimed at this is fastened using nuts. While the fixing of the locking body to the support material is realized when
The pillar of the handrail body has a pin which is spring-biased from the inside to the outside at the lower end, and the socket fixed to the supporting member has a through hole for allowing the pin to project and retract. The staircase is characterized in that the handrail is erected on the staircase main body when the pin is inserted into the socket and the pin is present in the through hole.