JP2011226119A - Erection frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an erection frame which is easy for handling such as storing and moving with safety into consideration.SOLUTION: This erection frame comprises: a girder part 2 on which a steel frame A is placed; legs 3 holding both ends of the girder part 2 in a longitudinal direction; a base part 4 binding the lower end of the legs 3; and casters 5 for moving. The casters 5 are attached to the legs 3 adjacent to the girder part 2 in a longitudinal direction via brackets 7 which are provided for the legs 3 and a rotating rod 8 installed between the brackets 7. The casters 5 rotates with the rotating rod 8 and are able to protrude outward from the legs 3 and store inside the legs 3.

Description

  The present invention relates to a frame for construction, and is mainly used as a frame for temporarily placing a steel frame material such as a column or a beam in a steel frame construction or the like.

  For example, in the construction of steel frames, steel frames such as pillars and beams that are brought into the field by transport vehicles are unloaded by heavy machinery such as cranes, and temporary materials such as brackets and suspension scaffolds are attached. After that, it is lifted again by a heavy machine such as a crane and installed at each position.

  At that time, the unloaded steel frame material is temporarily placed on a building frame called “Uma”, and hardware such as brackets and temporary materials such as suspension scaffolds are mounted thereon.

  Conventionally, as a gantry for temporarily placing a steel frame or the like, for example, a gantry as illustrated in FIG. 7A is known. In the figure, reference numeral 20 denotes a girder portion on which a steel frame A such as a column or a beam is placed, reference numeral 21 denotes a leg portion that supports the girder portion 20 at both ends thereof, and the leg portions 21 are provided at both end portions of the girder portion 20. It is suspended symmetrically below both sides.

  Reference numeral 22 denotes a base portion that forms the bottom plate of the leg portion 21, and the base portion 22 is formed in a rectangular frame shape so as to connect the lower end portions of the leg portions 21.

  In addition, this type of gantry is made of a shape steel material such as H-shape steel so that it can sufficiently withstand the weight of the steel frame A placed on the girder portion 20 and is quite heavy (about 100 kg), so the lower end of the leg portion A moving caster 23 is attached to the part.

  And when using, as shown in FIG.7 (b), it arrange | positions at predetermined intervals and the steel frame materials A, such as a pillar and a beam, are laid between the girder parts 20 and 20. As shown in FIG. Further, when moving, as shown in FIG. 7C, the caster 23 is tilted so as to be in contact with the ground, and in that state, it is pulled or pushed to move.

JP 11-336993 A

  However, since the caster 23 is attached in a state of protruding to the outside of the leg portion 21 and is fixed, there is a problem that it becomes an obstacle in storage. In addition, there is a risk that the building material may be hit and damaged during the work, or the worker may hit and fall or be injured.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a building gantry that is easy to handle such as storage and movement and that is also safe.

  The gantry for building according to claim 1 includes a girder portion on which building materials are placed, a leg portion that supports the girder portion at both longitudinal ends of the girder portion, and a lower end of the leg portion at a lower end portion of the leg portion. A base part for restraining the part, and a caster for movement, the caster via a bracket attached to each leg part adjacent to the longitudinal direction of the girder part and a rotating rod attached between the brackets It is attached to the said leg part, rotates with the said rotation rod, and is comprised so that it can project outside the said leg part and can be accommodated inside the said leg part.

  When using the present invention, it is possible to prevent accidents such as a worker hitting a caster with a building material and damaging it, or an operator hitting the caster and falling or getting injured. When doing so, it can be stored compactly without being bulky.

  The construction platform according to claim 2 is the construction platform according to claim 1, wherein the stopper is fixed in a state where the caster protrudes outside the leg portion and in a state where the caster is accommodated inside the leg portion. It is characterized by having.

  In the present invention, the caster is attached so that it can be stored inside the leg part. It can be used safely and can be prevented, and it can be stored compactly without being bulky.

  In addition, a stopper is attached to the caster so that the caster protrudes outside the leg and the caster is stored inside the leg, so that the caster is stored inside the leg while moving. You won't be able to do it, or the caster won't rattle during use.

Fig. 2 shows a frame for construction, (a) is a front view thereof, and (b) is a side view thereof. It is a partial enlarged view in FIG.1 (b) which shows the attachment part of a caster. FIG. 2A is a partially enlarged view of FIG. 1A illustrating the operation of the caster, wherein FIG. 1A illustrates the use of the caster, and FIG. The rotation rod which attaches a caster and a caster to a leg part is shown, (a) is the front view, (b) is a side view. The bracket which attaches a caster to a leg part is shown, (a) is the front view, (b) is the side view. (A) is a front view which shows the state which the frame for construction moves, (b) is a front view which shows the state which the frame for construction uses. An example of a conventional construction frame is shown, (a) is a front view thereof, (b) is a front view showing a state in which the construction frame is used, and (c) is a state in which the construction frame is moved. It is a front view.

  FIGS. 1-5 shows one Embodiment of this invention, FIG. 1 (a) is a front view of the frame for construction, FIG.1 (b) is the side view. 2 is a partially enlarged view of FIG. 1 (b), and FIGS. 3 (a) and 3 (b) are partially enlarged views of FIG. 1 (a) showing use and storage of the casters, respectively. It is.

  Further, FIGS. 4A and 4B are a front view and a side view showing a caster and a rotating rod for attaching the caster, and FIGS. 5A and 5B are a front view and a side view showing a bracket for attaching the caster. It is.

  In the figure, a gantry 1 includes a girder 2 on which a steel frame material A such as a column or a beam is laid down, legs 3 and 3 that support both ends of the girder 2 at both ends of the girder 2, and the legs The lower ends of the portions 3 and 3 are provided with a base portion 4 that restrains the lower ends of the leg portions 3 and 3 and a caster 5 that is moved so as to be self-supporting.

  The girder part 2 is installed horizontally, and the leg parts 3 and 3 are vertically suspended at both ends in the longitudinal direction of the girder part 2 in a diagonally downward direction on both sides, and the base part 4 is flat. It is formed in a rectangular frame shape so as to connect the lower ends of the legs 3 and is joined to the lower ends of the legs 3 at each corner.

  Reinforcing plates 6 a are attached to both sides of a substantially central portion of the girder 2, and a stiffening girder 6 b is attached between the leg portions 3 and 3 adjacent to each other in the longitudinal direction of the girder 2.

  The girder 2 and the leg 3 are made of H-shaped steel and angle steel, the base 4 is made of flat steel, and the girder 2 and leg 3, and the leg 3 and base 4 are welded respectively. Etc. are integrally assembled.

  The caster 5 is attached to the lower end portions of the leg portions 3 and 3 adjacent to each other in the longitudinal direction of the beam portion 2 via a bracket 7 and a rotating rod 8.

  The bracket 7 is formed in a substantially L shape that continues for a predetermined length along the inside of the leg portion 3 and the base portion 4, and is attached to the inside of the leg portion 3 by a plurality of mounting bolts 9.

  The rotating rod 8 is installed between the lower ends of the leg portions 3 and 3 adjacent to each other in the longitudinal direction of the beam portion 2 in parallel with the beam portion 2, and both end portions 8 a and 8 a are pivotally supported by the brackets 7 and 7. Has been.

  Further, at both end portions 8a and 8a of the rotating rod 8, there are movable portions 10 and 10 which rotate in the circumferential direction of the rotating rod 8 together with the rotating rod 8 and are displaced between the leg portion 3 and the base portion 4, respectively. The casters 5 are attached to the respective movable parts 10.

  When the movable part 10 is displaced to the leg part 3 side and attached to the leg part 3, the caster 5 projects to the outside of the leg part 3, while the movable part 10 is displaced to the base part 4 side. When attached to the portion 4, the caster 5 is accommodated inside the leg portion 3.

  Moreover, the movable part 10 includes a stopper 11 that is fixed in a state of being attached to the leg part 3 and the base part 4. The stopper 11 is attached in parallel with the rotating rod 8, and when the movable part 10 is displaced to the leg part 3 side and attached to the leg part 3, it protrudes in the direction perpendicular to the axis of the leg part 3 to the outside of the leg part 3. By doing so, the movable part 10, that is, the caster 5 is prevented from returning to the base part 4 side.

  On the other hand, when the movable part 10 is displaced to the leg part 4 side and attached to the leg part 4, the movable part 10, that is, the caster 5 is inserted into the pin hole 7 a formed in the bracket 7. It does not return to the part 3 side. Reference numeral 12 denotes a spring that constantly presses the stopper 11 in the direction of the tip.

  In such a configuration, when using the gantry 1, a plurality of girders 2 and 2 are arranged in parallel with each other as shown in FIG. Then, the steel frame material A is laid between the girders 2 and 2.

  Further, when moving the gantry 1, by moving the movable part 10 together with the caster 5 in the circumferential direction of the rotating rod 8 and displacing it to the leg part 3 side as shown in FIG. The caster 5 is projected outside the leg portion 3.

  Then, the stopper 11 is fixed so that it protrudes outside the leg portion 3 and does not return to the base portion 4 side. The caster 5 can be tilted toward the caster 5 so that the caster 5 is grounded, and can be moved by pushing or pulling in that state.

  According to the present invention, the caster can be stored inside the leg portion, so that it can be used safely when used, and can be stored compactly without being bulky.

DESCRIPTION OF SYMBOLS 1 Construction stand 2 Digit part 3 Leg part 4 Base part 5 Caster 6a Reinforcement plate 6b Reinforcement beam 7 Bracket 8 Rotating rod 9 Mounting bolt 10 Movable part 11 Stopper 12 Spring

Claims (2)

  Girder for placing building materials, legs that support the girder at both longitudinal ends of the girder, base that restrains the lower end of the leg at the lower end of the leg, and when moving The casters are attached to the legs via brackets attached to the legs adjacent to each other in the longitudinal direction of the spar and rotating rods attached between the brackets, and A pedestal for construction, which is configured to rotate together with the rod so as to protrude outside the leg and to be accommodated inside the leg.   2. The building stand according to claim 1, further comprising a stopper for fixing the caster in a state where the caster protrudes outside the leg portion and in a state where the caster is housed inside the leg portion. Mount.

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