JP2873550B2 - Spreader for membrane roof extension - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spreader for stretching a membrane roof, and more particularly to an improvement of a spreader used to stretch a membrane material on a beam member of a membrane structure.

[0002]

2. Description of the Related Art Conventionally, as such a type of spreader for membrane roofing, there is an invention disclosed in Japanese Patent Application Laid-Open No. 3-66880 by the present applicant.

[0003] That is, as shown in FIG. 13, this conventional device includes a film material supply drum (not shown) and a traveling roller 70 that can travel along an arch beam A adjacent to the film structure. The running roller 70 is configured to be movable in the width direction by the turnbuckle 71 in accordance with the interval width of the beam A.

[0004]

However, since the above-mentioned prior art uses the turnbuckle 71, the traveling roller 70 can be moved in the width direction between the parallel beams A. However, there is a problem that it is not possible to cope with the case where the interval width of each of them sequentially changes.

On the other hand, it is possible to move the traveling roller 70 by an automatic variable mechanism linked to a sensor for detecting the interval width of the beam A, but the configuration becomes very complicated and the cost increases. There is a disadvantage that it lacks practicality.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a spreader having a simple structure capable of satisfactorily following a change in the interval between beams of a membrane structure. And

[0007]

In order to solve the above-mentioned problems, the present invention adopts a method in which a spreader body 1 having a rotatable film material supply drum 4 is attached to a beam A adjacent to a film structure. In a film roof tensioning spreader in which running rollers 42 respectively engaged with the beams A are provided at predetermined intervals in the width direction so as to be able to run along, at least one of the running rollers 42 is The point is that the guide member 43 is provided so as to be movable in the width direction and is in contact with the side surface of the beam A in a biased state by pressing means.

[0008]

The extension of the membrane material on the beam A of the membrane structure is as follows.
The film material is supplied from the film material supply drum 4 while moving the spreader along the beam A.
Even if the interval width of the guide member changes sequentially, the guide member
The contact state between 43 and the side surface of the beam A is always maintained, and accordingly, the one traveling roller 42 also moves on the beam A, and the engagement state between the two is also maintained.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the spreader according to the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a spreader body provided with a work scaffold (not shown) on a front surface thereof, and mounting stands 2 and 3 are provided upright on both side ends thereof. 4 is a pipe-shaped film material supply drum having shaft portions 5 at both ends,
Each of the shaft portions 5 is rotatably supported by a pillow block 6, and the distal end portion thereof is inserted and held in an inverted U-shaped shaft presser 7 as shown in FIG. The bending moment is reduced.

Reference numeral 8 denotes an electric motor having a brake mechanism attached to one of the mounts 2, and includes a chain 9, a sprocket,
The drum 4 is rotationally driven through the shaft 10 and the shaft 5 at one end. Reference numeral 11 denotes an annular body fixed to the other end of the drum 5, which functions to maintain the wound state of the film material 12 wound around the drum 4 in contact with one end surface thereof.

Numeral 13 is a square pipe arranged in the width direction at the center of the bottom surface of the spreader body 1, and a bogie type frame 14 formed in a rectangular frame as shown in FIGS.
Is provided. The bogie frame 14 includes a channel steel 14a having a back surface arranged with a gap 15 and a channel steel 14a.
a mounting piece 16 projecting from the upper surface of the square pipe 13 is inserted into the gap 15 and the mounting piece 16 and the channel steel 14a are pinned. When combined, the bogie-type frame 14 is configured to be able to swing in the direction of arrow C with respect to the square pipe 13 (see FIG. 4). 17
Are a pair of rails extending between the lower end surfaces of the channel steels 14a of the bogie type frame 14, which are made of I-shaped steel. Reference numeral 18 denotes an erecting member having the same configuration as the channel steel 14a of the bogie type frame 14, and the erecting member 18 also has a central portion attached to the square pipe 13 so as to be swingable and a lower surface thereof. Is the rail
The tip of 17 is fixed and connected to the bogie type frame 14.

Reference numeral 19 denotes a threaded rod composed of a trapezoidal screw rotatably mounted between a pillow block 20 provided at one end of the lower surface of each rail 17 and a bearing 21 provided at the other end via a mounting member 46. A ratchet handle 22 is attached to one end. Reference numeral 23 denotes a side plate having a pair of rollers 24 that can roll in each groove 17a formed on the side surface of each rail 17 as shown in FIG.

Reference numeral 25 denotes a pair of mounting pieces 26 fixed to the inside of the side plate 23 by bolts, nuts and the like as shown in FIG.
A nut case having on its upper surface a pair of engaging members as an engagement member 27 disposed opposite to each other, and is screwed into the threaded rod 19 in a compartment 28 formed between these members 26, 27. A block-shaped nut 29 is housed, and a pair of support pieces 31 having a long hole 30 formed in the width direction are provided on the lower surface at predetermined intervals in front and rear.

Reference numeral 32 denotes a slide shaft slidably inserted into the elongated hole 30 of the support piece 31 of the nut case 25, and a notch 32a is formed on the lower surface of the end of the slide shaft.

Reference numeral 33 denotes a roller case in which a pair of projecting pieces 35 having a through hole 35a are protruded from the upper surface of a plate-shaped main body 34.
The slide shaft 32 is inserted through a through-hole 35a of 35 through a washer 36 made of a fluororesin, and hanging pieces 37 and 38 are provided on an inner edge and a front and rear edge of a lower surface of the main body 34, respectively. A protruding piece 39 is horizontally protruded at the center of the outer surface upper side of the hanging piece 37, and a pair of upper and lower supporting pieces 40 is horizontally protruded at the lower part of the inner surface. A pair of support pieces 41 are hung down. Reference numeral 42 denotes a pair of traveling rollers rotatably supported between the support pieces 41. 43 is support piece 40
The guide member includes a pair of guide rollers rotatably supported between the guide rollers. Reference numeral 44 denotes a lifting prevention piece fixed to the outer surface of the hanging piece 38 of the roller case 33, and a notch 44a capable of engaging with the back surface of a flange A 'of a beam A of the membrane structure described later is provided. Prevent separation from A '. Reference numeral 45 denotes a key engaged with the notch 32a of the slide shaft 32, which is fixed to the outer surface of the projection 35 of the roller case 33. One of the traveling roller mechanisms 47 is constituted by the above members.

Numeral 48 denotes a movable body movable along the rail 17, and the upper side has the same configuration as the running roller mechanism 47 as shown in FIG. 9, although the shape of the side plate 49 is slightly different. The difference is that a holding member 52 having an I-shaped steel 51 protruding from the lower surface is attached to the lower surface of the nut case 50. Reference numeral 53 denotes a pressing member in which an inner cylinder 55 in which a coil spring 54 is housed is fitted into an outer cylinder 56.
The protruding piece 39 of the roller case 33 of the running roller mechanism 47 is inserted between a pair of support pieces 57 fixed to the flange 51 a of the section steel 51 and provided at the end of the outer cylinder 56, and both are connected by a pin 58. The guide member 43 is always in contact with the side surface of the flange A 'of the beam A in a biased state.

Reference numeral 59 denotes a rail made of I-shaped steel fixed to the lower surface on the other end side of each lower beam 1a of the spreader body 1, as shown in FIGS. 10 and 11. Reference numeral 60 denotes the other traveling roller mechanism movable along the rail 59. Since the traveling roller mechanism 60 is configured substantially in the same manner as the one traveling roller mechanism 47, the same reference numerals are given to common members and specific description will be given. Although omitted, the protrusion 62 protruding from the center of the lower surface of the nut case 61 is attached to the roller case 63.
Is inserted between a pair of supporting pieces 64 protruding from the upper surface of the roller case 63 and is connected to the supporting piece 64 by a pin 65.
The difference is that it does not have 39.

The present embodiment has the above-described structure, and the spreader B is provided with each traveling roller mechanism 4 as shown in FIG.
When 7,60 running rollers 42 are set on the flange A 'of the beam A as the framework of the adjacent membrane structure so as to roll,
The guide member 43 comes into contact with the side surface of the flange A 'in a biased state. In this case, as shown in FIG. 12, one traveling roller mechanism 47 is disposed on the upper side, and the spreader B is moved in the same manner as in the prior art, such as a hydraulic jack disposed near the ridge of the beam A via a wire or the like. It is performed by a traction device (not shown).

Then, the spreader B is gradually raised along the beam A by the traction device, and the film material supply drum 4 is rotated by the electric motor 8 to supply the film material 12 to the beam A, which is provided at the side end thereof. A bolt 67 projecting from the flange A 'of the beam A is inserted into the hole as shown in FIG.
A nut 69 is fastened to the bolt 67 via
The film material 12 is stretched between them.

When the film material 12 is stretched, if the interval width of each beam A is different, the ratchet handle 22
Is rotated, the screw rod 19 rotates, and the engaging member 27 of the nut case 25 is pressed by the nut 29 screwed to the screw rod 19, and the traveling roller mechanisms 47, 60 and the movable Body 48
Moves along the rails 17, and the distance between the running roller mechanisms 47, 60 can be adjusted. In addition, since the two traveling roller mechanisms 47 and 60 can be moved individually, the center of the film material 12 can be disposed in the middle between the beams A, and thus the film material 12 can be easily stretched. Can contribute.

The guide member 43 of the traveling roller mechanism 47 is brought into contact with the flange A 'of the beam A in a biased state, and the roller case 33 is connected to the support piece 31 of the nut case 25 via the slide shaft 32. Since it is configured to be able to move along the long hole 30, the pressing member 53 is changed in accordance with a change in the interval width of the beam A.
The traveling roller 42 of the roller case 33 automatically moves in the width direction, and the traveling roller mechanism 47, 60 itself does not move as described above. It is possible to cope with the case where the width changes successively, and there is also an operational advantage that the burden on the operator can be reduced.

Further, since the one traveling roller mechanism 47 is swingably attached to the square pipe 13 of the spreader body 1, it follows the change of the inclination angle of the upper beam A,
The contact between the traveling roller 42 and the flange portion A 'of the beam A is maintained, so that stable traveling is possible.

The nut 29 screwed into the screw rod 19 is housed in a compartment 28 formed between the mounting piece 26 of the nut case 25 and the locking member 27, and the traveling roller mechanisms 47, 60 and Since the movable body 52 is hung on the rail 17 and the load is not directly applied to the screw rod 19, the screw rod 19 is appropriately protected and may hinder the movement of the respective traveling roller mechanisms 47 and 60. Absent.

Further, since the spreader B according to the present embodiment has a very simple overall structure, it has an advantage that it can be manufactured easily and inexpensively.

In the above embodiment, the running roller mechanisms 47 and 60 can be moved in the width direction by the screw rod 19, but a rack, a pinion or the like is used instead of the screw rod 19. And the traveling roller mechanism 47, 60
May be omitted.

In addition, the specific structure of the pressing means and the shape of the spreader main body 1 can be freely changed in design within the range intended by the present invention.

[0028]

As described above, in the present invention, since the running roller is connected to the guide member which comes into contact with the side surface of the beam in a biased state, the guide member is formed in accordance with the interval between the beams. Therefore, even if the width of the gap between the beams changes successively, the traveling roller is appropriately moved in the width direction. I got it.

Therefore, in order to cope with a change in the interval width of the beam,
Compared to the conventional means in which the worker moves the running roller each time, the work of stretching the film material at the site can be performed easily, and the effect of greatly contributing to shortening of the construction period is also achieved.

Further, since the spreader according to the present invention has a very simple overall structure, there is also a practical effect that it can be easily manufactured at low cost.

Further, according to the third aspect, since the load of the traveling roller mechanism is not directly applied to the screw rod,
The unique effect is obtained that the screw rod is protected and does not hinder the movement of the running roller mechanism in the width direction.

[Brief description of the drawings]

FIG. 1 is an overall front view showing an embodiment according to the present invention.

FIG. 2 is an enlarged sectional view of a main part.

FIG. 3 is an enlarged plan view of a main part.

FIG. 4 is a partial cross-sectional side view.

FIG. 5 is an enlarged front view of a main part.

FIG. 6 is an enlarged front view of a main part including a partial cross section.

FIG. 7 is an enlarged side view of a main part including a partial cross section.

FIG. 8 is an enlarged plan view of a main part.

FIG. 9 is an enlarged side view of a main part including a partial cross section.

FIG. 10 is an enlarged front view of a main part.

FIG. 11 is an enlarged side view of a main part including a partial cross section.

FIG. 12 is a front view showing a use state.

FIG. 13 is an enlarged front view of a main part showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Spreader main body 4 ... Drum for film material supply 17 ... Rail 19 ... Screw rod 28 ... Partition chamber 29 ... Nut 42 ... Running roller 43 ... Guide member A ... Beam

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kuniei Tanaka 3-22-1, Higashiyama, Meguro-ku, Tokyo Taiyo Kogyo Co., Ltd. Tokyo Branch (58) Field surveyed (Int. Cl. ⁶ , DB name) E04H 15 / 00-15/64

Claims (3)

(57) [Claims] 1. A spreader main body (1) having a rotatable membrane material supply drum (4), and a beam (A) for moving along an adjacent beam (A) of the membrane structure. In the membrane roof stretching spreader in which the traveling rollers (42) to be engaged are provided at predetermined intervals in the width direction, at least one traveling roller (42) is provided movably in the width direction, and A spreader for stretching a membrane roof, wherein the spreader is connected to a guide member (43) which comes into contact with the side surface of the beam (A) in a biased state by a pressing means. 2. The spreader according to claim 1, wherein said guide member (43) is a rotatable roller arranged horizontally and in contact with a side surface of a flange (A ') of a beam (A). . 3. A rail (17) is provided on the bottom surface of the spreader body (1) in the width direction, and a running roller mechanism having a running roller (42) is suspended from the rail (17). In order to move the running roller mechanism along the rail (17), a screw rod (19) is rotatably supported on the shaft center at a position below the rail (17), and the screw rod (19) is The membrane roof upholstery according to claim 1 or 2, wherein a nut (29) screwed to the rod (19) is interposed between a pair of engaging members (27) arranged in the running roller mechanism in the width direction. Setting spreader.