JP6762531B2 - Ladder device with pinch device and pinch device - Google Patents

Description

The present invention relates to a sandwiching device suitable for sandwiching two stacked ladders or stages when the length is adjusted by slidably stacking the two ladders or stages, and a ladder device provided with the sandwiching device. Is.

Generally, when constructing walls and roofs of buildings, demolition, construction of structures such as bridges, demolition, painting, slope construction of hills, etc., use a ladder from the ground to these high work positions. A worker leans up and down this ladder.

In addition, when performing various work such as construction and repair of sloped parts such as the roof of a building, a multipurpose stage that also serves as a ladder and scaffolding board is placed along the sloped surface of this sloped part, and workers are placed on this stage. Is supposed to walk.

However, when using a single ladder or stage, for example, when the distance from the ground to the work position is long, or when the work position such as the roof is wide and long, the ladder or stage may not reach this work position. is there.

Therefore, in such a case, for example, as shown in Patent Document 1, two stages are stacked and one stage is slid to the other stage to adjust the entire length of the stage according to the distance to the working position. ..

In this case, since it is necessary to fix the two superposed stages after setting the length, a holding member for fixing the two stages is provided between the two stages.

This holding member consists of sockets attached to both sides of the frame of each stage and wing bolts screwed between the sockets. When the wing bolts are tightened, the sockets are close to each other and the two stages are stacked. Some are fixed in the state.

Japanese Patent No. 5260844 (see paragraph 0032, FIG. 4)

Although the conventional holding member is not particularly structurally defective, the following improvements are desired . First , since the above-mentioned sandwiching member uses a socket fixed to the frame of each stage, the two stages can be fixed only at the position of the fixed socket, so that the length of the stage can be set to an arbitrary length. I can't set it. Secondly , since the socket is fixed to each stage, it can be used only for the stage provided with the fixed socket, and cannot be used as a holding member for holding another member such as a ladder without the socket. Third, since the socket is fixed in each stage, increasing the components of each stage, the structure of the stage is complicated and workability, which is disadvantageous assembling property, the economy. An object of the present invention in its This alone can be used to hold the various members, attached to an arbitrary position of the ladder and stages, workability, assembling property, excellent clamping device and the clamping device economical It is to provide a ladder device equipped.

In order to achieve the above object, the holding device of the present invention includes an outer tube, an inner tube slidably inserted into the outer tube, a nut provided at the end of the inner tube, and an end of the outer tube. A bolt provided on the portion and screwed into the nut, a first holding piece projecting laterally from the end side surface of the outer tube, and laterally projecting from the end side surface of the inner tube. A second holding piece parallel to the first holding piece, a first support rod projecting laterally from the side surface of the body of the outer tube, and a lateral direction from the side surface of the body of the inner tube. It is composed of a second support rod which is projected from the above and arranged in parallel with the first support rod.

Similarly, the ladder device of the present invention includes the first and second ladders that are slidably overlapped with each other and the sandwiching device that sandwiches the first and second ladders, and the first and second ladders are Each has a pair of left and right girders and a plurality of hollow steps erected between the girders, and the holding device includes an outer tube, an inner tube slidably inserted into the outer tube, and the inner tube. A nut provided at the end of the outer tube, a bolt provided at the end of the outer tube and screwed into the nut, a first holding piece projecting laterally from the side surface of the end of the outer tube, and the above. A second holding piece projecting laterally from the side surface of the end of the inner tube and facing parallel to the first holding piece, and a first support projecting laterally from the side surface of the body of the outer tube. a rod, which also consists of a second support rod and projecting laterally from the body portion side of the inner tube arranged parallel to the first support rod, a first upper SL, the second clamping piece Each of the girder members is sandwiched between them, and each of the support rods is inserted into the hollow portion of the step from the end.

According to the present invention, the following effects can be achieved.

A) Since the sandwiching device of the present invention is independently molded, it is versatile because it can be independently attached to and removed from a ladder, a stage, or other sandwiched member.

B) Similarly, since it is independent of the ladder, stage, and other sandwiched members, it is not necessary to bother to provide the sandwiched member, and the structure of the sandwiched member can be simplified, workability, and economy can be improved.

C) Since the support rod can be inserted into the hollow portion of the step in the ladder device of the present invention, it is possible to prevent the first and second holding pieces from slipping and sliding from the girder member of the ladder, and the length thereof is adjusted after the length is adjusted. You can firmly hold the ladder stacked in position.

It is a perspective view of the ladder device which concerns on one Embodiment of this invention. It is a partially enlarged plan view of FIG. It is a partially enlarged front view of FIG. It is a partially enlarged side view of FIG. It is a partial notch plan view of the holding device which concerns on one Embodiment of this invention. Is a positive plane view of the outer tube in A) clamping device. B) It is the same plan view. C) is the rear view. It is a positive plane view of an inner tube in A) clamping device. B) It is the same plan view. C) is the rear view.

Hereinafter, an example of carrying out the present invention will be described with reference to the drawings.

The present invention relates to a sandwiching device suitable for sandwiching two stacked members to be clamped when two ladders, a stage or other sandwiched members are slidably stacked to adjust the length.

Similarly, the present invention relates to a ladder device using this holding device.

1 to 4 show a ladder device connected by using the holding device A according to the embodiment of the present invention.

5 and 7 show a single pinching device A.

This will be described in detail below.

As shown in FIG. 1, the ladder device of the present invention comprises a first and second ladders B1 and B2 slidably overlapped with each other and a sandwiching device A for sandwiching the first and second ladders B1 and B2. It is configured.

The first ladder B1 includes a pair of left and right girders 9A and 9A, and a plurality of hollow steps 10A erected between the girders 9A and 9A. Similarly, the second ladder B2 is a pair of left and right girders. It includes 9B, 9B and a plurality of hollow steps 10B erected between the girders 9B, 9B.

The sandwiching device A that holds the ladders B1 and B2 adopts the structures shown in FIGS. 5 to 7.

That is, the holding device A is provided at the outer tube 1, the inner tube 2 slidably inserted into the outer tube 1, the nut 3 provided at the end of the inner tube 2, and the end of the outer tube 1. The bolt 4 screwed into the nut 3 and the first holding piece 7A projecting laterally from the end side surface of the outer tube 1 and the first holding piece 7A projecting laterally from the end side surface of the inner tube 2 From the second holding piece 7B parallel to the holding piece 7A of 1, the first support rod 8A projecting laterally from the side surface of the body of the outer tube 1, and the side surface of the body of the inner tube 2 as well. It is composed of a second support rod 8B that protrudes in the lateral direction and is arranged in parallel with the first support rod 8A.

The head portion 6 of the bolt 4 is rotatably in contact with the end side lid 1a of the outer tube 1, and the threaded portion 4a of the bolt 4 penetrates the hole 1b formed in the lid 1a and the nut 3 on the inner tube 2 side. Is screwed into.

As a result, when the bolt 4 is rotated clockwise or counterclockwise via the head 6, the inner tube 2 moves with respect to the outer tube 1 along the bolt 4, and the width between the holding pieces 7A and 7B is adjusted. You can do it.

Then, the girder members 9A and 9B are sandwiched between the first and second holding pieces 7A and 7B from both sides, and the support rods 8A and 8B are placed in the hollow portions 11A and 11B of the steps 10A and 10B at the ends of the hollow portions. It is inserted from each part.

In this case, as shown in FIG. 2, when the ladders B1 and B2 are overlapped, the girders 9A and 9B are overlapped, and at the same time, both ends of the steps 10A and 10B in the ladders B1 and B2 are the girders. It penetrates 9A and 9B, and its hollow portion is exposed to the outside of each of the girder members 9A and 9B.

Therefore, the two girder members 9A and 9B facing each other are sandwiched by the holding pieces 7A and 7B, and at the same time, the support rods 8A and 8B are placed in the hollow portions 11A and 11B of the respective steps 10A and 10B, respectively. It can be inserted from the outside of.

Thus, superimposed two ladder B1, B2 are holding piece 7A, it is prevented lateral displacement is sandwiched by 7B, the hollow portion 11A, and a difference in 11B filled-in support rod 8A simultaneously, longitudinally 8B The lengths of the ladders B1 and B2 are set at the positions held by the holding device A.

The length of each ladder B1 and B2 can be adjusted, for example, according to the height from the ground to the construction work position of the construction site.

For example, in order to further increase the overall length of the ladder from the state shown in FIG. 1, the holding device A is once removed, then the upper ladder B2 is pulled up by an arbitrary length and overlapped with the lower ladder B1 , and then the holding device A is held. The mounting position of the device A is shifted up and down, and the ladders B1 and B2 are held by the holding device A in the same manner as described above.

As a result, the length of the entire ladder is adjusted according to this holding position.

Further, the inner tube 2 is moved with respect to the outer tube 1 via the bolt 4 according to the width between the girders 9A and 9B of the ladder, and the width between the holding pieces 7A and 7B is changed between the girders 9A and 9B. Adjust according to the width of.

While the above ladder device H are those fitted with a clamping device A ladder B1, B2, the clamping device A is taken One eclipsed in similar nipped member has a hole for inserting the support rod 8A, 8B ..

For example, as shown in Patent Document 1 described above, it can also be used as a holding member for a multipurpose stage having a ladder on the back side and a scaffolding plate on the front side. The action and effect in this case are the same as those of the ladder device H described above.

A pinching device B1 1st ladder B2 2nd ladder
1 Outer tube 2 Inner tube 3 Nut 4 Bolt 7A First holding piece 7B Second holding piece 8A, 8B Support rod 9A, 9B Girder material 10A, 10B Step 11A, 11B Hollow part

Claims (3)

The outer tube (1), the inner tube (2) slidably inserted into the outer tube (1), the nut (3) provided at the end of the inner tube (2), and the outer tube (1). ), A bolt (4) provided at the end of the outer tube (3) and screwed into the nut (3), and a first holding piece (7A) projecting laterally from the side surface of the end of the outer tube (1). A second holding piece (7B) projecting laterally from the end side surface of the inner tube (2) and facing parallel to the first holding piece (7A), and a body of the outer tube (1). The first support rod (8A) projecting laterally from the side surface of the portion and the first support rod (8A) projecting laterally from the side surface of the body of the inner tube (2) and parallel to the first support rod (8A). A holding device composed of a second support rod (8B) arranged . It consists of the first and second ladders (B1) and (B2) that are slidably overlapped, and the holding device (A) that holds the first and second ladders (B1) and (B2).
The first and second ladders (B1) and (B2) are a pair of left and right girders (9A) (9A), (9B) (9B), and the girders (9A) (9A), (9B), respectively. A plurality of hollow steps (10A) and (10B) erected between (9B) are provided.
The holding device (A) includes an outer tube (1), an inner tube (2) slidably inserted into the outer tube (1), and a nut (3) provided at the end of the inner tube (2). A bolt (4) provided at the end of the outer tube (1) and screwed into the nut (3), and a first protruding laterally from the side surface of the end of the outer tube (1). The sandwiching piece (7A), the second sandwiching piece (7B) projecting laterally from the side surface of the end of the inner tube (2) and facing parallel to the first sandwiching piece (7A), and the above. The first support rod (8A) projecting laterally from the side surface of the body of the outer tube (1) and the first support rod (8A) projecting laterally from the side surface of the body of the inner tube (2). It is composed of a second support rod (8B) arranged in parallel with the rod (8A) .
The girder members (9A) and (9B) are sandwiched between the first and second holding pieces (7A) and (7B), and the support rods (8A) and (8B) are placed in the steps (10A) and (8B). A ladder device characterized in that it is inserted into the hollow portions (11A) and (11B) of 10B) from the ends, respectively. Both ends of the ladder (B1), each step in (B2) (10A), ( 10B) , respectively each spar (9A), penetrates the (9B),
The ladder holding device according to claim 2, wherein the hollow portions (11A) and (11B) of the steps are exposed to the outside of the girders (9A) and (9B).

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