JPH0514075B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a frame made of a pipe that is used to span plate materials during work. This article is about a stand with a footboard that can be built.

[Prior Art] Conventionally, a pedestal A used during work is formed by screwing together a pair of ladder-shaped pipe frames 1 at their upper ends, as shown in FIG. 5, and these pedestals A are arranged side by side. Then, cross the board over the horizontal beam 2 of the adjacent pedestal A,
The task was to work at heights by climbing on top of planks.

[Problem to be solved by the invention] However, in the conventional example as mentioned above,
Frame A is sometimes used alone because it is easy to handle, and when used alone, the treads of Frame A are horizontal bars 2 made of pipe, so it is not possible to secure a secure footing. First, there was the problem of falling accidents occurring while working on Frame A, and for this reason, the use of Frame A alone at construction sites was prohibited under Article 528 of the Safety and Health Act.

The present invention attempts to solve the above problems, and its purpose is to enable independent work to be carried out using a pipe frame and to secure the necessary area for the work on the scaffold. The purpose is to provide a trestle with a footboard that can be used.

[Means for Solving the Problems] In order to achieve the above object, the pedestal with tread according to the present invention is provided with fixtures 3 having a U-shaped cross section with an open bottom surface at both ends of the crossbar 2 of the frame 1. , a recessed part 5 is provided at the side end of the upper surface of the fixture 3 inwardly and has a substantially same shape as the outer surface of the vertical crosspiece 4, and the recess 5 is fitted into the vertical crosspiece 4, and a step board is inserted between both the fixtures 3. 6 is constructed, and the fixture 3 and the footboard 6 are connected by a fixture 7 and fixed to the horizontal beam 2.

[Function] By attaching the step board 6 to the horizontal crosspiece 2, a foothold for safely performing work can be secured on the pedestal A, and the pedestal A can be used alone.

[Example] As shown in Fig. 1, the frame A is formed by screwing together a pair of ladder-shaped pipe frames 1 at the upper ends, and can be used in an upright state by expanding the lower ends. It's like this. These frames A are arranged side by side, and a plate material is stretched over the horizontal beam 2 of the adjacent frame A so that work at high places can be performed by riding on the plate material. The frame 1 is composed of a pair of vertical bars 4 and a plurality of horizontal bars 2 arranged horizontally above and below between the vertical bars 4, and a step board 6 is attached to the horizontal bars 2. . As shown in FIG. 2, this footboard 6 mainly consists of a footboard body 6a and a fixture 3 attached to the footboard body 6a. Fixture 3
is formed into a U-shaped cross section with an open bottom so that it can be fitted and disposed on both ends of the horizontal bar 2, and a recessed portion in approximately the same shape as the outer surface of the vertical bar 4 is provided at the side end. 5 is formed. and the recess 5 of the fixture 3
is fitted onto the vertical bar 4 and is also fitted onto the horizontal bar 2 so as to cover it from above. The footboard main body 6a is formed into a long plate shape with protrusions 6c provided on the surface to prevent slipping, and a pair of connecting pieces 8 are respectively provided downwardly at both ends of the lower surface. This connecting piece 8
A fixing device 7 such as a screw is inserted into the fixing device 3 provided at both ends of the horizontal beam 2, and the fixing device 7, such as a screw, is inserted from the through hole 8a provided in the connecting piece 8 toward the elongated hole 10 provided in the hanging piece 9 of the fixing device 3. is screwed in, and a nut 23 is screwed onto the tip of the fixture 7 via the washer 22 to connect it. At this time, the footboard body 6a and the fixture 3 are connected, and the fixture 3 and the footboard body 6a are fixed to the horizontal beam 2 with the fixture 7. Further, at this time, the elongated hole 10 provided in the hanging piece 9 of the fixture 3 allows adjustment of the position of the footboard main body 6a when the footboard body 6a is connected.

FIG. 3 shows another embodiment of the present invention, in which a long hole 10 is provided in the upper surface of the fixture 3, and a U-shaped hook bolt or the like is inserted from below the horizontal bar 2. The fixing tool 7 is inserted into the long hole 1 through the horizontal bar 2.
0 to fix the fixture 3 to the horizontal beam 2, and also insert the tip of the fixture 7 into the through hole 12 provided in the tread body 6a so that it can be connected with the net 14 via the washer 13. be.

FIG. 4 shows still another embodiment of the present invention, in which a pair of bolts 15 are provided downwardly protruding from both ends of the bottom surface of the footboard main body 6a.
This bolt 15 is inserted into the elongated hole 10 of the fixture 3 from above, and the nut 14 is inserted through the washer 13.
They are connected by The connection between the horizontal bar 2 and the fixture 3 is achieved by inserting a fixing device 7 such as a bolt from the side into a through hole 16 provided in the hanging piece 9 of the fixture 3 so as to pass under the horizontal bar 2. , a nut 23 is screwed onto the tip of the fixing tool 7 via a washer 22, and the horizontal bar 2 is attached.
It is fixed at At this time, 20 is a notch for preventing the connecting rods 21 connecting the frames 1 from hitting each other when the frame A is folded.

[Effects of the Invention] As described above, the present invention includes a fixture having a U-shaped cross section with an open bottom at both ends of the horizontal beam of the frame, and a vertical bar extending inward at the side end of the top surface of the fixture. A concave portion having approximately the same shape as the outer surface of the holder was provided, the concave portion was fitted into the vertical crosspiece, a tread was constructed between both fixtures, and the fixture and the footboard were connected by a fixture and fixed to the horizontal crossbeam. By attaching the treads to the horizontal beams, it is possible to secure a foothold for working safely on the frame.Securing a foothold for working safely prevents falls, etc., and improves work efficiency. , safety can be improved, and the frame can be used alone at construction sites and the like.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the present invention, FIG. 2 is an exploded perspective view of the same treadle, FIG. 3 is an exploded perspective view of another embodiment of the same, and FIG. 4 is an exploded perspective view of another embodiment of the same. FIG. 5 is an exploded perspective view of the embodiment, and FIG. 5 is a perspective view of a conventional stepladder, in which 1 is a frame, 2 is a horizontal bar, 3 is a fixture, 4 is a vertical bar, 5 is a recessed portion, 6 is a step board, and 7 is a perspective view of a conventional stepladder. It is a fixture.

Claims (1)

[Claims] 1 A pair of ladder-shaped pipe frames are screwed together at their upper ends to form a pedestal, and fixtures with a U-shaped cross section with open bottoms are provided at both ends of the horizontal bars of the frame, and the top surface of the fixtures is Provide a recessed part facing inward at the side end of the vertical frame in approximately the same shape as the outer surface of the vertical crosspiece, fit the recess into the vertical crosspiece, install a tread between both fixtures, and connect the fixture and the footboard to the fixture. A pedestal with treads, characterized in that it is connected to a treadle and fixed to a horizontal crosspiece.