JP6558069B2 - Lifting step - Google Patents

Description

  The present invention relates to an ascending / descending step attached as a scaffold for elevating a structure such as a transmission line tower.

  For example, the transmission line tower is composed of angle materials (equal mountain type steel) and main pillar materials (main posts), and the main pillar materials are equipped with step bolts as scaffolding. Step bolts are removed from the ground at a predetermined height so as not to climb the tower. For this reason, when raising or lowering a steel tower for work or inspection, it is necessary to carry a step bolt and attach it to or remove it from the main pillar material. However, since ordinary step bolts are composed of bolts and nuts, not only labor and time are required, but holes for inserting the bolts into the main pillar material must be formed at any position. It cannot be installed.

  For this reason, a scaffold that can be temporarily attached to an arbitrary position and is detachable and detachable is known (see, for example, Patent Document 1). In this scaffold, the inner surfaces facing each other are flat surfaces that are in contact with the plates (members of the structure), and the outer surfaces opposite to the inner surfaces are inclined so that the thickness gradually increases in one direction. A pair of wedge members that are surfaces, and a fixed member that is formed in the U-shaped opposing surfaces so that an inclined surface that can contact the inclined surface of the wedge member is formed and is fitted into the wedge member in one direction. And a step bolt fixed to the fixing member so as to protrude in a direction crossing in one direction from at least one outer peripheral surface of the fixing member.

JP 2013-170399 A

  By the way, in order to attach the scaffold of Patent Document 1 to a transmission line tower or the like, both surfaces of an angle member (plate) are opposed to each other between the planes of the wedge member, and the upper end surface of the fixing member is struck downward with a hammer. Thereby, the inclined surface of the fixing member descends along the inclined surface of the wedge member, and the wedge member is fixed to the angle member by the wedge action. In addition, to remove the scaffold from the transmission line tower, the lower end surface of the fixing member is struck upward with a hammer. Thereby, the inclined surface of the fixing member rises along the inclined surface of the wedge member, and the clamping force of the angle member by the wedge member is loosened and removed from the angle member.

  Thus, in order to attach and detach the scaffold, not only must both hands be used, but it is necessary to carry and hit a hammer (tool), which takes time and effort. In particular, when the scaffold is attached and detached at a high position, it is unstable and burdens the operator. Moreover, there is a risk of dropping the hammer from a steel tower.

  Accordingly, an object of the present invention is to provide an elevating step that can be attached and detached with one hand without using a tool.

In order to solve the above-mentioned problems, the invention of claim 1 is a lifting step attached as a scaffold for lifting and lowering a structure including a steel tower, and has two sandwiching portions opposed to each other. A holding body in which the structural member of the structure can be inserted in between, and a temporary holding provided in the holding body and temporarily holding the holding body in the structural member by inserting the structural member between the holding portions and means, provided in the holding member, and a scaffold body for placing the feet of people, coupled to said holding member, and a rotary member for fixing the holding member to the structural member by tightening said temporary holding The means is composed of a spring material disposed between the clamping parts, and the structural member is temporarily clamped by the both clamping parts by the elastic force of the spring material by inserting the structural member between the clamping parts. And the scaffold body penetrates both the clamping parts and The cell side screw portion is formed at the opposite end, by tightening the rotary member to the threaded portion, said sandwiching the component in both holding portions, characterized in that.

  According to this invention, when the constituent member is inserted between the sandwiching portions, the sandwiching body is temporarily held by the constituent member by the temporary holding means, and when the rotating body is tightened, the sandwiching body is fixed to the constituent member, thereby forming the scaffold body. It is attached to the member.

Further , according to the present invention, when the constituent member is inserted between the sandwiching portions, the constituent member is temporarily sandwiched between the sandwiching portions by the spring material, and when the rotating body is fastened to the screw portion of the scaffold body, the sandwiching portion is configured. A member is clamped and a scaffold is attached to a component.

The invention according to claim 2, in lifting steps according to claim 1, wherein the holding member is provided to extend downward, when the mounted person's foot to the scaffold body, it abuts against the structural member It is provided with the support part which suppresses the bending of the said scaffold body.

  According to the first aspect of the present invention, it is possible to easily and quickly attach the rotating member by simply inserting the component member between the clamping portions and tightening the rotating body. It can be easily and quickly removed from the component simply by removing it from the member. Moreover, by inserting the constituent member between the sandwiching portions, the sandwiching body, that is, the lifting step is temporarily held by the constituent member, so that it can be attached and detached with one hand. That is, it is possible to insert the constituent member between the holding parts with one hand and tighten the rotating body with one hand, or loosen the rotating body with one hand and remove the holding body from the constituent member with one hand. Furthermore, since it is only necessary to tighten or loosen the rotating body, it can be attached and detached without using a tool (such as a hammer or a wrench).

  Moreover, it is not necessary to process and form a hole or the like for inserting a bolt into a structural member of the structure, and it can be attached at an arbitrary position. In this way, the scaffold can be attached to and detached from the structure at an arbitrary position easily, stably and safely.

Further , since the structural member is temporarily clamped by the both clamping portions by the elastic force of the spring material, it is possible to securely temporarily hold the clamping body, that is, the elevating step by the structural member. In addition, since the rotating body is fastened to the threaded portion at the end of the scaffolding body and the constituent members are sandwiched between the both sandwiching portions, the sandwiching body (lifting step) can be firmly fixed by the constituent members. As a result, the stability as a scaffold is improved.

According to the second aspect of the present invention, when a person's foot is placed on the scaffold body, the support section suppresses the bending of the scaffold body, so that the stability as the scaffold is improved.

It is (a) top view and (b) front view which show the step for raising / lowering which concerns on Embodiment 1 of this invention. It is a top view which shows the step for raising / lowering which concerns on Embodiment 2 of this invention. It is a top view which shows the temporary holding state of the step for raising / lowering which concerns on Embodiment 3 of this invention. It is a top view which shows the cancellation | release state of temporary holding | maintenance of the step for raising / lowering of FIG. It is a top view which shows the fixed state of the step for raising / lowering of FIG. It is a side view of the step for raising / lowering of FIG. It is the (a) top view and (b) front view which show the step for raising / lowering which concerns on Embodiment 4 of this invention.

  The present invention will be described below based on the illustrated embodiments.

(Embodiment 1)
FIG. 1A is a plan view (partially sectional view) and FIG. 1B is a front view showing a step 1 for raising and lowering according to this embodiment. This elevating step 1 is a step attached as a scaffold in order to elevate a structure including a steel tower, and mainly includes a sandwiching body 2, an elastic body (temporary holding means) 3, and a scaffold body (rotating body) 4. And. Here, in this embodiment, the case where the structure is a transmission line tower and the lifting / lowering step 1 is attached to the main column member (component member) 101 made of an L-shaped angle member will be mainly described.

  The sandwiching body 2 has two sandwiching portions 21 and 22 that face each other, and a main pillar 101 of a transmission line tower can be inserted between the sandwiching portions 21 and 22. That is, it is made of steel and has a substantially U-shaped planar shape, and two parallel surface portions of the U-shape constitute the sandwiching portions 21 and 22, and the sandwiching portions 21 and 22 are connected by the connecting portion 23. The distance between the clamping parts 21 and 22 is set so that the one piece part 102 of the main pillar 101 can be inserted between the clamping parts 21 and 22. In addition, when the scaffold body 4 is tightened as described later, the length (large size) of the sandwiching portions 21 and 22 is set so that the one piece portion 102 can be firmly sandwiched between the scaffold body 4 and the second sandwiching portion 22. Is set.

  Furthermore, the thickness of the clamping parts 21 and 22 is set so that predetermined strength and rigidity can be obtained in a state where the clamping parts 21 and 22 are attached to the main column member 101, and a person can move up and down stably. Further, a screw hole 21 a is formed at the center of the first clamping part (one clamping part) 21.

  The elastic body 3 is provided on the sandwiching body 2 and temporarily holds the sandwiching body 2 on the main pillar member 101 by inserting the main pillar member 101 between the sandwiching portions 21 and 22. That is, the elastic body 3 is made of rubber or the like and can be elastically deformed. The elastic body 3 is a substantially hemispherical body and is disposed on the inner surface (the surface facing the one piece portion 102) 21 a of the first clamping portion 21. In this embodiment, a plurality of screw holes 21a are provided so as to surround them.

  When the one piece portion 102 of the main pillar 101 is inserted between the holding portions 21 and 22, the elastic body 3 is compressed, and the elastic body 3 and the second holding portion (the other holding portion) 22 form a single piece portion 102. Is temporarily clamped, and the clamping body 2 (step 1 for lifting / lowering) is temporarily held by the main column member 101. In other words, the elastic body 3 and the second holding portion 22 temporarily hold the one piece portion 102 so that the holding body 2 is temporarily held by the main column member 101. The number of arrangement is set. Here, the temporary holding (temporary clamping) is a state in which the clamping body 2 is attached to the main column member 101 without dropping and the clamping body 2 can be moved by hand.

  The scaffold body 4 is provided on the sandwich body 2 and places a person's feet. In this embodiment, the scaffold body 4 is connected to the sandwich body 2 and fastened to fix the sandwich body 2 to the main column member 101. To do. That is, it is a steel rod-like shape, and a threaded portion 41 is formed at one end. The threaded portion 41 is screwed into the threaded hole 21 a of the sandwiching body 2 and penetrates through the first sandwiching portion 21. In this state, the scaffold body 4 extends substantially perpendicular to the surfaces of the sandwiching portions 21 and 22. Further, a disc-shaped pressing portion 42 is provided at the tip of the screw portion 41 so as to face the second clamping portion 22.

  On the other hand, a through hole 4a is formed at the other end of the scaffold body 4, and a round bar-like handle 43 is slidably inserted into the through hole 4a. Further, spherical stoppers 44 are detachably attached to both ends of the handle 43. Then, with the handle 43 held by hand in a state where the one piece portion 102 of the main pillar material 101 is inserted between the sandwiching portions 21 and 22 of the sandwiching body 2, the scaffold body 4 is rotated around the axis and tightened as a rotating body. The one piece 102 is sandwiched between the pressing portion 42 of the scaffold body 4 and the second sandwiching portion 22. Accordingly, the sandwiching body 2, that is, the lifting step 1 is fixed to the main column member 101.

  Here, the strength / rigidity, diameter, and length of the scaffold body 4 are set so that a person's foot can be stably placed and easy to carry.

  Next, the operation of the ascending / descending step 1 having such a configuration will be described.

  In order to attach the lifting / lowering step 1 to the main column member 101 when moving up and down the transmission line tower, first, a desired portion of one piece 102 of the main column member 101 is inserted between the holding portions 21 and 22 of the holding member 2. Thus, the one piece portion 102 is temporarily clamped by the elastic body 3 and the second clamping portion 22, and the clamping body 2, that is, the lifting step 1 is temporarily held by the main column member 101. Next, when the scaffold body 4 is tightened, the one piece portion 102 is firmly sandwiched between the scaffold body 4 and the second sandwiching portion 22, and the scaffold body 4, that is, the lifting step 1 is fixed to the main column member 101. . At this time, the scaffold body 4 is attached so as to extend substantially perpendicular to the longitudinal direction of the one piece portion 102.

  And a foot is put on this scaffolding body 4, and a hand is put, and a power transmission line tower is raised / lowered. At this time, the handle 43 is slid so as not to get in the way, or the handle 43 is removed from the scaffold body 4 by removing the stopper 44. Thereafter, the lifting step 1 can be removed by loosening the scaffold body 4 and removing the sandwiching body 2 from the one-piece portion 102.

  As described above, according to the step 1 for raising and lowering, it is possible to easily and quickly attach the main pillar 101 by inserting the one piece 102 between the holding portions 21 and 22 and fastening the scaffold body 4. Moreover, it is possible to easily and quickly remove the scaffold body 4 from the main column member 101 simply by loosening the scaffold body 4 and removing the sandwiching body 2 from the one piece portion 102. That is, the scaffold can be easily attached to and detached from the transmission line tower. In addition, by inserting the one piece 102 between the sandwiching portions 21 and 22, the elevating step 1 is temporarily held by the main pillar 101, so that it can be attached and detached with one hand. That is, insert the one piece 102 between the holding portions 21 and 22 with one hand and tighten the scaffold body 4 with one hand, or loosen the scaffold body 4 with one hand and remove the holding body 2 from the one piece 102 with one hand. Can do.

  Further, since the scaffold body 4 only needs to be tightened or loosened, it can be attached and detached without using a tool (such as a hammer or a wrench). In addition, the scaffold body 4 can be properly tightened with a predetermined force and torque by holding the handle 43 and rotating the scaffold body 4. Furthermore, since the scaffold body 4 also serves as a rotating body, the configuration is simplified and the handling is facilitated. Further, since the temporary holding means is only composed of the elastic body 3, the configuration becomes simpler.

  On the other hand, there is no need to process and form holes for inserting bolts into the main pillar 101 of the transmission line tower, and it can be attached at an arbitrary position. In this way, the scaffold can be attached to and detached from the transmission line tower at an arbitrary position easily, stably and safely. In addition, since only the sandwich body 2 (including the elastic body 3) sandwiching the one piece portion 102 and the scaffold body 4 on which the foot is placed are provided, the size and weight can be reduced, and the carrying and handling are easy.

(Embodiment 2)
FIG. 2 is a plan view (partially sectional view) showing step 1 for raising and lowering according to this embodiment. In this embodiment, the configuration is different from that of the first embodiment in that a magnet 31 is provided instead of the elastic body 3 as a temporary holding means, and a configuration equivalent to that of the first embodiment is denoted by the same reference numeral. The description is omitted.

  The magnet 31 is provided on the inner surface 22 a side of the second clamping part (one clamping part) 22, and the one clamping part 102 is inserted between the clamping parts 21, 22, whereby the second clamping part is obtained by the magnetic force of the magnet 31. 22 is attached to the one piece portion 102, and the lifting step 1 is temporarily held by the main pillar 101. Here, the magnetic force and magnitude of the magnet 31 are set so that the lifting step 1 can be temporarily held stably.

  In addition, the scaffold body 4 is screwed through a screw hole 21 a formed in the first clamping part (the other clamping part) 21. When the scaffold body 4 is tightened as a rotating body, the one piece 102 is firmly sandwiched between the scaffold body 4 and the second sandwiching section 22, and the scaffold body 4, that is, the lifting step 1 is attached to the main column member 101. It is done.

  According to this embodiment, as in the first embodiment, the lifting step 1 can be attached and detached with one hand without using a tool, easily, stably and safely, and at any position. In addition, the scaffold can be attached to and detached from the transmission line tower. In addition, since the temporary holding means is only composed of the magnet 31, the configuration becomes simpler, and the holding body 2, that is, the lifting step 1 can be securely temporarily held by the main column member 101. .

(Embodiment 3)
3 to 6 show this embodiment, and the same components as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.
In this embodiment, the temporary holding means is constituted by the spring material 24 disposed between the sandwiching portions 21 and 22, and the elastic member of the spring material 24 is inserted by inserting the one piece portion 102 between the sandwiching portions 21 and 22. One piece part 102 is temporarily clamped by both clamping parts 21 and 22 by force. That is, the flat plate-like first clamping part 21 and the second clamping part 22 are connected to each other at one end via a bar-like connecting part 23, and the second clamping part 22 is slidable along the connecting part 23. It has become. Further, a spring material 24, which is a compression coil spring, is disposed between the sandwiching portions 21 and 22 so as to wrap around the connecting portion 23, so that the other end side of the sandwiching portions 21 and 22 approaches like a clothespin.・ It comes in contact.

  Furthermore, grips 25 made of rubber or the like and having elasticity are disposed on the inner surfaces of the holding parts 21 and 22 on the other end side. When the one piece portion 102 is inserted into the other end portion between the holding portions 21 and 22, the one piece portion 102 is temporarily held between the holding portions 21 and 22 by the elastic force of the spring material 24 as shown in FIG. . Moreover, when the one end part side of the clamping parts 21 and 22 is approached and the spring material 24 is contracted, as shown in FIG. 4, the other end part side of the clamping parts 21 and 22 is opened and the temporary clamping of the one piece part 102 is released. The

  The scaffold body 5 has a threaded portion 51 formed at the end opposite to the side on which the foot is placed, penetrating through the central portions of the sandwiching portions 21 and 22. That is, it is in the shape of a round bar made of steel and has a threaded portion 51 formed at one end. ). Further, the insertion hole 22a of the second clamping part 22 through which the screw part 51 penetrates has a large truncated cone shape on the outer surface side, and has a gap between the screw part 51, as shown in FIGS. As shown, the second clamping part 22 is movable (swingable). On the other hand, the first sandwiching portion 21 is fixed to the scaffold body 5 at the penetrating portion, and a stopper 52 that contacts the outer surface of the first sandwiching portion 21 is provided on the scaffold body 5.

  And the one piece part 102 is clamped by both the clamping parts 21 and 22 by tightening the rotary body 6 in the screw part 51. That is, as shown in FIGS. 5 and 6, the rotating body 6 is formed by integrating a nut 61 and a handle 62, and the handle 62 is manually turned around the screw portion 51 protruding from the second clamping portion 22. By tightening the nut 61, the one piece portion 102 is held between the holding portions 21 and 22, and the scaffold body 5, that is, the lifting step 1 is fixed to the main column member 101. On the other hand, when the rotating body 6 is loosened, as shown in FIG. 3, the lifting step 1 is temporarily held by the main column member 101 by the spring material 24, and if the clamping body 2 is pulled out from the one piece portion 102, the lifting step 1 is performed. It can be removed. Here, the handle 62 is formed in such a shape that the nut 61 can be tightened with a predetermined force and torque even if it is turned by hand.

  According to this embodiment, as in the first embodiment, the lifting step 1 can be attached and detached with one hand without using a tool, easily, stably and safely, and at any position. In addition, the scaffold can be attached to and detached from the transmission line tower. Moreover, since the one piece part 102 is temporarily clamped by the both clamping parts 21 and 22 by the elastic force of the spring material 5, the clamping body 2 (step 1 for raising / lowering) can be reliably temporarily held by the one piece part 102. In addition, since the rotating body 6 is fastened to the screw portion 51 at the end of the scaffold body 5 and the one piece portion 102 is held by the both holding portions 21 and 22, the holding body 2 can be firmly fixed by the one piece portion 102. As a result, stability and safety as a scaffold are improved.

(Embodiment 4)
FIG. 7A is a plan view and FIG. 7B is a front view showing the lifting step 1 according to this embodiment. In this embodiment, the configuration differs from the first and second embodiments in that the support portion 7 is provided, and the same components as those in the first and second embodiments are denoted by the same reference numerals and the description thereof is omitted.

  The support portion 7 is provided to extend downward on the sandwiching body 2 and suppresses the bending of the scaffold body 4 by contacting the main pillar material 101 when a human foot is placed on the scaffold body 4. is there. That is, the magnet 31 is provided on the inner surface 21a side of the first clamping part 21 of the clamping body 2 having a substantially U-shaped planar shape, and the screw hole 22b formed in the second clamping part 22 is screwed in the shape of a screw rod. A bar (rotating body) 8 is threaded through. Here, a disc-shaped pressing portion 81 is provided at one end portion (end portion on the main column member 101 side) of the fastening bar 8, and a handle 82 is slidably provided at the other end portion.

  Further, the scaffold body 4 is provided on the outer surface of the first sandwiching portion 21, and the support portion 7 is provided extending downward from the lower surface of the first sandwiching portion 21 so as to be orthogonal to the scaffold body 4. . The support portion 7 has a substantially rectangular parallelepiped shape, and is formed so as to be slightly in contact with the one piece portion 102 or slightly away from the one piece portion 102 when a human foot or the like is not placed on the scaffold body 4. . Moreover, the length and thickness of the support part 7 are set so that the bending of the scaffold body 4 can be suppressed more.

  When the one piece portion 102 is inserted between the holding portions 21 and 22, the first holding portion 21 adheres to the one piece portion 102 by the magnetic force of the magnet 31, and when the tightening bar 8 is tightened, One piece portion 102 is held by one holding portion 21, and the elevating step 1 is attached to the main column 101. When a human foot or the like is placed on the scaffold body 4 in this state, a moment in the direction of arrow D is generated in the support portion 7, and the support portion 7 abuts (presses) the main pillar material 101. Thereby, the support part 7 is supported by the main pillar material 101, and it is suppressed that the scaffold body 4 bends below.

  According to such an embodiment, when a human foot or the like is placed on the scaffold body 4, the support section 7 suppresses the bending of the scaffold body 4, so that stability and safety as a scaffold are improved. To do.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there is a design change or the like without departing from the gist of the present invention, Included in the invention. For example, the support portion 7 is provided only in the fourth embodiment, but the support portion 7 may also be provided in the other first to third embodiments. Further, although the elastic body 3 is provided as the temporary holding means in the first embodiment, a spring or a spring may be provided.

DESCRIPTION OF SYMBOLS 1 Step for raising / lowering 2 Clamping bodies 21, 22 Clamping part 21a Screw hole 24 Spring material (temporary holding means)
3 Elastic body (temporary holding means)
31 Magnet (temporary holding means)
4, 5 Scaffolding body (rotating body)
51 Screw part 6 Rotating body 7 Supporting part 8 Tightening bar (Rotating body)
101 Main pillar (component)
102 One piece (component)

Claims (2)

In order to ascend and descend the structure including the steel tower, it is an ascending and descending step attached as a scaffold,
A sandwiching body having two sandwiching portions opposed to each other, and capable of inserting the constituent members of the structure between the sandwiching portions;
Temporary holding means that is provided in the clamping body and temporarily holds the clamping body on the component member by inserting the component member between the clamping parts;
A scaffolding body provided on the sandwich body for placing a person's foot;
A rotating body connected to the clamping body and fixing the clamping body to the component member by tightening ;
The temporary holding means is composed of a spring material disposed between the clamping parts, and the structural member is inserted between the clamping parts by the elastic force of the spring material between the clamping parts. Temporarily hold
The scaffold body penetrates both the clamping parts, and a threaded part is formed at an end opposite to the side on which the foot is placed,
By clamping the rotating body to the screw portion, the component members are clamped by the both clamping portions.
A lifting step characterized by the above. Provided with a support portion that is provided to extend downward in the sandwich body and suppresses the bending of the scaffold body by abutting the component member when a human foot is placed on the scaffold body;
The raising and lowering step according to claim 1 .

Images