JP2018031113A - Clamping device and ladder device provided with clamping device - Google Patents

Abstract

[Problem] To provide a clamping device that can be used alone as a clamping member for various members, can be attached to any position on a ladder or stage, and has excellent workability, ease of assembly, and economic efficiency, and a ladder device equipped with this clamping device. to provide. [Means for solving the problem] An outer tube 1, an inner tube 2 slidably inserted into the outer tube 1, a nut 3 provided at the end of the inner tube 2, and a nut 3 provided at the end of the outer tube 1. a bolt 4 screwed into the nut 3; a first clamping piece 7A protruding laterally from the side surface of the end of the outer tube 1; and a first clamping piece 7A protruding laterally from the side surface of the end of the inner tube 2. A second clamping piece 7B faces parallel to the first clamping piece 7A, and a second clamping piece 7B protrudes laterally from the side surface of the body of the outer tube 1. [Selection diagram] Figure 1

Description

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

  In general, when performing various operations such as building walls, roofs, building, dismantling, building structures such as bridges, dismantling, painting, and slope work on hills, ladders are used from the ground to these higher working positions. The worker is standing up and down on this ladder.

  In addition, when performing various operations such as building and repairing sloped parts such as roofs of buildings, a multi-purpose stage that serves both as a ladder and a scaffolding plate is placed along the sloped surface of this sloped part, and workers are placed on this stage. Is supposed to walk.

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

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

  In this case, since it is necessary to fix the two superimposed stages after the length is set, a clamping member for fixing the two stages is provided between the two stages.

  This clamping member is composed of sockets attached to both sides of the frame of each stage and butterfly bolts screwed between the sockets, and when the butterfly bolts are tightened, the sockets are close to each other and the two stages are stacked. There is something to fix in the state.

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

Although the conventional clamping members are not particularly structurally defective, the following improvements are desired.
First, since the holding 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. Cannot be set.
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 other members such as a ladder not provided with the socket.
Third, since the socket is fixed to each stage, the number of components of each stage is increased, the structure of the stage is complicated, and this is disadvantageous in terms of workability, assembly, and economy.
Accordingly, an object of the present invention is to provide a clamping device that can be used alone as a clamping member for various members, is attached to an arbitrary position of a ladder or a stage, and is excellent in workability, assembly property, and economy, and the clamping device. It is to provide a ladder device.

  In order to achieve the above object, the clamping device of the present invention includes an outer tube, an inner tube slidably inserted into the outer tube, a nut provided at an end of the inner tube, and an end of the outer tube. A bolt screwed into the nut, and a first clamping piece projecting laterally from the end side surface of the outer tube, and projecting laterally from the end side surface of the inner tube. A second holding piece facing the first holding piece in parallel; a first support rod projecting laterally from the barrel side surface of the outer tube; and a lateral direction from the barrel side surface of the inner tube. And a second support rod arranged in parallel with the first support rod.

Similarly, the ladder device according to the present invention includes first and second ladders that are slidably overlapped with each other, and a clamping device that clamps the first and second ladders. The first and second ladders are Each of the pair of left and right girder members and a plurality of hollow steps provided between the girder members, the clamping device includes an outer tube, an inner tube slidably inserted into the outer tube, and the inner tube A nut provided at an end of the outer tube, a bolt provided at an end of the outer tube and screwed into the nut, a first clamping piece projecting laterally from an end side surface of the outer tube, A second holding piece projecting in a lateral direction from an end side surface of the inner tube and facing the first holding piece in parallel; and a first support projecting in a lateral direction from a body side surface of the outer tube 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,
Each girder is sandwiched between the first and second clamping pieces, and each support rod 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 clamping device of the present invention is formed independently, it is versatile because it can be independently attached to and detached from a sandwiched member such as a ladder or a stage.

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

  C) Since the ladder device of the present invention can insert the support rod into the hollow portion of the step, the first and second clamping pieces can be prevented from sliding and sliding from the beam of the ladder, and the length after adjusting the length. It can hold the ladder superimposed on the position firmly.

It is a perspective view of the ladder apparatus concerning one embodiment of the present invention. FIG. 2 is a partially enlarged plan view of FIG. 1. FIG. 2 is a partially enlarged front view of FIG. 1. It is a partially expanded side view of FIG. It is a partially notched top view of the clamping apparatus which concerns on one embodiment of this invention. A) It is a rear view of the outer tube in a clamping device. B) It is the same top view. C) It is the same front view. A) It is a rear view of the inner tube in a clamping device. B) It is the same top view. C) It is the same front view.

An embodiment of the present invention will be described below with reference to the drawings.

  The present invention relates to a sandwiching device suitable for sandwiching two stacked sandwiched members when the length is adjusted by slidably stacking two ladders, a stage, or other sandwiched members.

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

  1 to 4 show a ladder device coupled by using a clamping device A according to an embodiment of the present invention.

  5 to 7 show a single clamping device A. FIG.

  This will be described in detail below.

  As shown in FIG. 1, the ladder device of the present invention includes first and second ladders B1 and B2 that are slidably overlapped with each other, and a clamping device A that clamps the first and second ladders B1 and B2. It is configured.

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

  The sandwiching device A that holds the ladders B1 and B2 employs the structure shown in FIGS.

  That is, the clamping 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, the first clamping piece 7A projecting laterally from the end side surface of the outer tube 1, and projecting laterally from the end side surface of the inner tube 2 A second sandwiching piece 7B opposed in parallel to one sandwiching piece 7A, a first support rod 8A projecting laterally from the side surface of the outer tube 1 and the side surface of the inner tube 2 The second support rod 8B is provided in a projecting manner in the lateral direction and 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 passes through the hole 1b formed in the lid 1a and the nut 3 on the inner tube 2 side. Are screwed together.

  Thereby, when the bolt 4 is rotated clockwise or counterclockwise via the head 6, the inner tube 2 expands and contracts along the bolt 4, and the width between the sandwiching pieces 7A and 7B can be adjusted. .

  Then, the girders 9A and 9B are sandwiched from both sides by the first and second clamping pieces 7A and 7B, and the support rods 8A and 8B are inserted into the hollow portions 11A and 11B of the steps 10A and 10B. Each one is inserted from the part.

  In this case, as shown in FIG. 2, when the ladders B1 and B2 are overlapped, the beams 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 respectively connected to the beams. 9A and 9B are penetrated and the hollow part is exposed to the outside of each girder material 9A and 9B.

  Accordingly, the two supporting members 9A, 9B opposed to each other by the sandwiching pieces 7A, 7B are sandwiched, and at the same time, the supporting rods 8A, 8B are inserted into the hollow portions 11A, 11B of the respective steps 10A, 10B. Can be inserted from the outside.

  As a result, the two ladders B1 and B2 that are overlapped are sandwiched between the sandwiching pieces 7A and 7B to prevent lateral displacement, and at the same time, the support rods 8A and 8B inserted into the hollow portions 11A and 11B are The shift is prevented and the lengths of the ladders B1 and B2 are set at the positions held by the holding device A.

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

  For example, in order to further increase the overall length of the ladder from the state shown in FIG. 1, the clamping device A is removed at one end, and then the upper ladder 9B is pulled up to an arbitrary length and stacked on the lower ladder 9A. The mounting position of the device A is shifted up and down, and the ladders B1 and B2 are held by the clamping device A in the same manner as described above.

  Thereby, the length of the whole ladder is adjusted corresponding to this holding position.

  Furthermore, the inner tube 2 is expanded / contracted 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 adjusted according to the width between the girders 9A and 9B. To do.

  The above-described ladder device H is obtained by attaching the clamping member A to the ladders B1 and B2. The clamping device A can also be attached to a similar sandwiched member having holes into which the support rods 8A and 8B are inserted.

  For example, as shown in Patent Document 1 described above, it can 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 effect in this case is the same as that of the ladder device H described above.

A clamping device B1 first ladder B2 second ladder

DESCRIPTION OF SYMBOLS 1 Outer tube 2 Inner tube 3 Nut 4 Bolt 7A 1st clamping piece 7B 2nd clamping piece 8A, 8B Support rod 9A, 9B Girder material 10A, 10B Step 11A, 11B Hollow part

Claims (3)

  An outer tube (1), an inner tube (2) slidably inserted into the outer tube (1), a nut (3) provided at an end of the inner tube (2), and the outer tube (1 ) And a bolt (4) screwed into the nut (3) and a first clamping piece (7A) projecting laterally from the side surface of the outer tube (1), A second clamping piece (7B) projecting laterally from the end side surface of the inner tube (2) and facing in parallel with the first clamping piece (7A), and a body of the outer tube (1) A clamping device constructed by projecting laterally from the side of the part. The first and second ladders (B1) and (B2) that are slidably overlapped with each other, and the clamping device (A) that clamps the first and second ladders (B1) and (B2),
The first and second ladders (B1), (B2) are a pair of left and right girders (9A) (9A), (9B) (9B) and the girders (9A) (9A), (9B), respectively. (9B) comprising a plurality of hollow steps (10A), (10B) installed between
The clamping device (A) includes an outer tube (1), an inner tube (2) slidably inserted into the outer tube (1), and a nut (3) provided at an end of the inner tube (2). A bolt (4) provided at an end of the outer tube (1) and screwed into the nut (3), and a first projecting laterally from the side surface of the end of the outer tube (1). A sandwiching piece (7A), a second sandwiching piece (7B) projecting laterally from an end side surface of the inner tube (2) and facing the first sandwiching piece (7A) in parallel, and The first support rod (8A) projecting laterally from the body side surface of the outer tube (1) and the first support rod projecting laterally from the body side surface of the inner tube (2). Second support arranged parallel to the rod (8A) (8B) and the first and second sandwiching pieces (7A) and (7B) to sandwich the girders (9A) and (9B), and the support rods (8A) and (8B). Is inserted into the hollow portions (11A) and (11B) of the steps (10A) and (10B) from the end portions, respectively. Both ends of each step 10A, 10B in the ladder (B1), (B2) are passed through the girders (9A), (9B) respectively, and the hollow portion is outside the girders (9A), (9B). The ladder clamping device according to claim 2, wherein the ladder is exposed.

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