JP2551385Y2 - Large door support structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a support structure for a large door provided in an opening of a hangar or the like.

[Conventional technology]

The large door provided in the opening of the hangar, etc., is supported on the upper and lower sides by the upper guide rail and the lower guide rail, respectively. The beams of the building, along which the upper guide rails are provided, blow up the roof of the building,
Due to the snow that compresses the roof, it fluctuates up and down,
There was a risk that the large door would fall off the guide rail and collapse.

For this reason, conventionally, a slider that can travel in the opening and closing direction of the large door is provided between a pair of left and right upper guide rails that are provided horizontally along the upper portion of the opening, and the upper end of the large door is moved by the slider. There has been proposed a support structure for supporting a guide stick erected vertically (see Japanese Patent Publication No. 50-35750).

That is, by mounting a guide stick erected on the upper end of the large door slidably in the vertical direction with respect to the upper part of the large door, the vertical movement of the upper guide rail provided along the upper part of the opening is reduced. Attempts have been made to tolerate.

[Problems to be solved by the invention]

However, in order to smoothly slide the guide stick in the vertical direction in accordance with the vertical movement of the upper guide rail, a high precision processing technique is required.

In addition, even if high precision processing is performed, when the large door receives a side wind, the wind pressure causes a frictional force that prevents smooth sliding of the guide stick in the vertical direction, and the large door moves up and down. The upper guide rail is pulled so as to be lifted, and the wheels of the large door may come off from the lower guide rail, or the upper guide rail may be damaged by the load of the large door.

That is, there is a problem that the vertical movement cannot be tolerated only when there is a possibility that the upper guide rail may move vertically due to strong wind.

In addition, in order to reliably allow such vertical fluctuation,
The present applicant provides a slider that can travel in the opening and closing direction of the large door between a pair of left and right upper guide rails that are provided horizontally along the upper portion of the opening, and attaches the slider to the upper end of the large door. A support structure is proposed in which a guide stick composed of a pair of front and rear columnar frames adjacent to each other in the opening and closing direction of the large door is erected, and guide rollers for supporting the respective guide sticks are disposed on both front and rear ends of the slider. (Japanese Utility Model Application No. 2-4666 (Japanese Utility Model Application No. 3-98281)).

With this configuration, when the upper guide rail fluctuates up and down, the slider provided between the guide rails is rotated by a guide roller that supports each guide stick erected at the upper end of the large door. The vehicle runs vertically along the guide stick, and vertical movement of the upper guide rail is allowed.

However, since a pair of guide sticks is required for each slider, there is a new problem that the number of parts increases.

Further, when the pair of guide sticks is erected on the upper end of the large door, the distance between the two guide sticks must be accurately adjusted according to the length of the slider in the front-rear direction.

Therefore, the present invention provides only one guide stick for each slider, does not require advanced precision processing technology, and allows the upper guide rail to move up and down under strong wind without fail. The technical task is to reliably prevent wheel accidents, collapse accidents, and damage to the upper guide rail.

[Means for solving the problem]

In order to solve this problem, the present invention provides a slider that can travel in the opening and closing direction of the large door between a pair of left and right upper guide rails provided horizontally along the upper part of the opening, and the slider, In a support structure for a large door that supports a guide stick erected at the upper end of the large door, a through-hole for inserting the guide stick is formed at the center of the slider, and the guide is provided inside the through-hole. A guide roller that holds the stick slidably up and down is provided rotatably in the vertical direction, and a roller support frame provided to be able to swing horizontally in the horizontal direction is attached to each of the left and right sides of the through hole. Guide rollers are provided before and after the roller support frame so as to slide on the upper guide rails.

[Action]

According to the present invention, when a pair of left and right upper guide rails provided horizontally along the upper part of the opening fluctuate up and down under the influence of wind pressure or the like, the slider provided between the guide rails is moved to the upper end of the large door. With the rotation of the guide roller that supports the guide stick provided upright, the vehicle runs vertically along the guide stick, and vertical movement of the upper guide rail is allowed.

That is, according to the present invention, a guide stick provided on the upper end of the large door is not slid vertically with respect to the upper part of the large door as in the prior art, but a slider provided on the upper guide rail. Is vertically moved along a guide stick by a guide roller provided on the slider, thereby allowing vertical movement of the upper guide rail.

Therefore, it is not necessary to make use of advanced precision processing technology, and the vertical force cannot be tolerated due to the frictional force generated when the large door is subjected to wind pressure. There is no danger of producing
Since the roller support frame with the guide roller slidably in contact with the upper guide rail is provided so as to swing freely in the horizontal direction, the large door swings so as to be twisted right and left under the influence of wind pressure and the like. However, each of the guide rollers slides without causing the upper guide rail to cling, and no excessive force is applied to the slider.

Also, a guide stick that stands upright on the upper end of the large door,
Even if the wheels of the large door come off from the lower guide rails, the guide sticks set up at the upper end of the large doors will guide the upper guide The large door is reliably prevented from falling down by being caught between the rails.

In addition, a guide stick standing upright on the upper end of the large door,
Since the guide stick is inserted and held in the through hole provided at the center of the slider, it is sufficient to provide only one guide stick for each slider.

Therefore, at the same time as the number of parts is reduced, there is no problem even if the position where the guide stick is erected is slightly shifted, and rough positioning is sufficient.

〔Example〕

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a perspective view showing a support structure of a large door according to the present invention.

In this example, between a pair of left and right upper guide rails 2R and 2L provided horizontally along the upper part of the opening such as a hangar,
The sliders 3 that can travel in the opening and closing directions of the large door 1 are provided in accordance with the number of guide sticks 4 erected at the upper end of the large door 1.

Each slider 3 has a through hole 5 formed at the center thereof for inserting the guide stick 4 therein. A guide for holding the guide stick 4 vertically slidably from both front and rear sides of the slider 3 inside the through hole 5. Rollers 6F, 6B are provided rotatably in the vertical direction, and a plurality of guide rollers 7R, which are in sliding contact with the upper guide rails 2R, 2L and rotate in the horizontal and vertical directions on both left and right sides of the through hole 5, respectively. 7R… and 7
L, 7L ... are provided respectively.

Then, a through hole 5 through which the guide stick 4 is inserted
Is a guide roller 6F holding the guide stick 4
A pair of front and rear frame members 8f and 8b provided with
And a pair of left and right frame members 8r and 8 provided with guide rollers 7R and 7L that are in sliding contact with the left and right upper guide rails 2R and 2L.
1 is formed by a rectangular frame 8 which can be disassembled with bolts 9, 9,.

Further, the guide rollers 7R, 7L are respectively provided on the left and right frame members 8r, 8l of the rectangular frame 8 forming the through-hole portion 5 with respective roller support frames 11R, 11L provided so as to be swingable in the horizontal direction by pins 10 respectively. It is located in front of and behind.

Further, a guide stick 4 inserted into the through hole 5 is provided.
Is a guide roller on both front and rear sides along its longitudinal direction.
Concave grooves 12F and 12B for slidingly contacting 6F and 6B are formed.

Each guide roller 6F and 6B has a groove on the shaft end side.
A ball bearing 13 is provided which can contact the surface of the guide stick 4 forming the groove bottom of 12F and 12B.

When the large door 1 is to be built, first, the guide stick 4 erected at the upper end of the large door is moved to the upper guide rail.
The slider 3 is mounted on the guide stick 4 after the traveling wheel of the large door 1 is mounted on the lower guide rail while passing between the 2R and 2L and projecting upward.

The slider 3 is mounted in a pair of right and left frame members 8r provided with roller support frames 11R, 11L to which a plurality of guide rollers 7R, 7R... And 7L, 7L.
And 8l along the upper guide rails 2R and 2L on the left and right sides of the guide stick 4, respectively. In this state, a pair of front and rear frame members 8f and 8b provided with the guide rollers 6F and 6B are moved to the guide stick 4 , And the frame members 8f and 8b are fixed to the left and right frame members 8r and 8l with bolts 9, 9,..., Respectively.

As a result, the guide stick 4 is
f, 8b, 8r and 8l are inserted into the through-hole 5 formed by the rectangular frame 8 in which the slider 3 is mounted.

As described above, if the slider 3 can be mounted while the guide stick 4 erected at the upper end of the large door 1 is passed between the upper guide rails 2R and 2L, the work of assembling the large door 1 becomes extremely easy. .

Further, since the slider 3 can be removed from the guide stick 4 by disassembling the frame members 8f to 8l forming the square frame 8, the slider 3 can be repaired or replaced very easily.

Further, a guide stick 4 held by each slider 3
Suffices, so that the number of parts is small and the position where the guide stick 4 is erected need not be strictly set.

Next, as described above, the large door 1 built at the opening of the hangar or the like is guided by the guide stick 4 erected at the upper end thereof being inserted into the through hole 5 provided at the center of the slider 3. Since the upper guide rails 2R and 2L move up and down due to strong wind, the guide rollers 6F and 6B of the slider 3
Slides up and down along the grooves 12F and 12B of the guide stick 4, and its up and down movement is allowed.

Therefore, there is no possibility that the traveling wheel of the large door 1 will be lifted off the lower guide rail and will be disengaged, or the upper guide rails 2R and 2L will be damaged by the load of the large door.

Also, a guide stick 4 erected on the upper end of the large door 1
However, since the upper guide rails 2R and 2L protrude above the guide rails 2R and 2L between the upper guide rails 2R and 2L, even if the wheel of the large door 1 is removed from the lower guide rails, the guide stick 4 keeps the upper guide rails 2R. And between 2L
The collapse of the large door 1 is reliably prevented.

Further, a plurality of guide rollers 7R, 7
Since the roller support frames 11R and 11R to which R ... and 7L, 7L ... are mounted are swingable in the horizontal direction with the pin 10 as a fulcrum, the large door 1 may be twisted right and left under the influence of wind pressure and the like. The guide rollers 7R, 7R ... and 7L,
7L slide along the upper guide rollers 2R and 2L without any one-sided movement, and no excessive stress acts on the slider 3.

In the above embodiment, the guide stick 4 has an H-shaped cross section in which concave grooves 12F and 12B are formed on both front and rear sides along the longitudinal direction, but the present invention is not limited to this. For example, as shown in FIG. 2, longitudinal ribs 14F and 14B are protruded along the center of both front and rear sides to form a cross-shaped cross-section, and each longitudinal rib 14F and 14B is sandwiched from both left and right sides. A case in which the guide rollers are held by a pair of guide rollers 6F, 6F and 6B, 6B may be used.

[Effect of the invention]

As described above, the support structure of the large door according to the present invention is:
Without the need for advanced precision processing technology, it is possible to reliably allow the upper part of the upper guide rail to fluctuate under strong winds and to reliably prevent accidents such as large doors falling off, collapsing, and damage to the upper guide rail. At the same time, there are various excellent effects such as the number of parts of the support structure being small.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a support structure for a large door according to the present invention, and FIG. 2 is a plan view showing another embodiment. Explanation of reference numerals 1 ... large door, 2R, 2L ... upper guide rail, 3 ... slider, 4 ... guide stick, 5 ... through hole, 6F, 6
B: Guide roller, 7R, 7L: Guide roller, 8: Rectangular frame, 8f, 8b: A pair of front and rear frame members, 8r, 8l
... A pair of left and right frame members, 11R and 11L.

Claims (2)

(57) [Scope of request for utility model registration] A large door (1) is provided between a pair of left and right upper guide rails (2R, 2L) provided horizontally along the upper part of the opening.
A supporting mechanism for a large door that supports a guide stick (4) erected on the upper end of the large door (1) by means of a slider (3) that can move in the opening and closing direction of the large door (1). A through hole (5) for inserting the guide stick (4) is formed at the center of (3), and the guide stick (4) is held inside the through hole (5) so as to be slidable up and down. Roller support frames (11R, 11L) provided with rotatable guide rollers (6F, 6B) in the vertical direction and swingable in the horizontal direction on the left and right sides of the through hole (5), respectively. And a guide roller (7R, 7L) for slidingly contacting each of the upper guide rails (2R, 2L) before and after the roller support frame (11R, 11L). Construction. 2. A pair of front and rear frame members (8f, 6f) provided with guide rollers (6F, 6B) for holding the guide sticks (4) are provided in through holes (5) through which the guide sticks (4) are inserted. 8b) and each of the upper guide rails (2R,
2L) is a rectangular frame (8) obtained by disassembling a pair of left and right frame members (8r, 8l) provided with guide rollers (7R, 7L) that are in sliding contact with the utility model. The support structure for a large door according to claim 1.