JP2886527B1 - Seismic isolation escalator - Google Patents

Abstract

A large displacement may occur in the relative position between an upper floor and a lower floor sandwiching a seismic isolation layer, and in a conventional support portion, a main frame of an escalator body falls off from a receiving member. There was a possibility. SOLUTION: One end and the other end of a main frame 29 are respectively connected to an upper floor 31 and a lower floor 33 via a seismic isolation part 43.
On the floors 35 and 37 of Seismic isolation section 43 is replaced with floor section 3
A support shaft rotatably provided around a vertical axis at 5, 37; a support rod having a linear track orthogonal to the support axis and fixing one longitudinal end of the linear track to the upper end of the support shaft; And a roller provided on the main frame 29 and rolling on a linear track.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation escalator provided on an upper floor and a lower floor sandwiching a seismic isolation layer.

[0002]

2. Description of the Related Art Escalators are used for goods stores, station buildings,
It is installed in various buildings such as hotels, hospitals, and public facilities. As shown in FIG. 10, the escalator 1 includes an endless circulation path 3, a drive mechanism (not shown) for operating the circulation path 3, side plates 5 provided on both sides of the circulation path 3, 5 mainly comprising an endless handrail belt 7 that goes around the outer periphery of the handrail belt 5. The circulation path 3, the driving mechanism, the side plate 5, the handrail belt 7, and the like are supported and fixed to the main frame 9.

The main frame 9 is erected and extends over the upper floor and the lower floor. The main frame 9 penetrates an opening 13 opened in the floor 11 on the upper floor, and has one longitudinal end at the floor 11 on the upper floor.
, While the other end is supported by the floor 15 on the lower floor. As shown in FIG. 11, the support portion 17
The edges of the main frame 9 are supported on the edges 1 and 15. At the edges of the floors 11 and 15, a step 19 is formed. A receiving member 21 is fixed to the step portion 19. On the other hand, a slider 23 is provided at an end of the main frame 9. Slider 23
Are slidably supported by the receiving member 21. That is, the main frame 9
Are movably supported in the sliding range of the slider 23.

[0004]

The above-mentioned conventional escalator is generally installed between an upper floor and a lower floor, which are integrated structures. Therefore, a small sliding range (about 100 mm) in the support portion was sufficient.
In recent years, the demand for buildings having a seismic isolation function has been rapidly increasing. In these buildings, a seismic isolation layer may be provided between the upper floor and the lower floor. However, a larger displacement absorbing gap (about 450 mm) is required between the upper floor and the lower floor sandwiching the seismic isolation layer than in the case of an integrated structure. Therefore, when the main frame is supported by the conventional support portion, the relative position displacement generated between the main frame and the upper and lower floors exceeds the sliding range, and the main frame falls off from the receiving member. Therefore, development of an escalator that can be installed with the seismic isolation layer in between is urgently desired. The present invention has been made in view of the above circumstances, and provides a seismic isolation escalator that can be installed between an upper floor and a lower floor in which relative displacement is increased by sandwiching a seismic isolation layer. Aim.

[0005]

According to a first aspect of the present invention, there is provided a seismic isolation escalator having an endless circulation path, a driving mechanism for operating the circulation path, and at least the circulation path. And a main frame for supporting and fixing the drive mechanism, an escalator for supporting one end in the longitudinal direction of the inclined main frame on the upper floor and supporting the other end on the lower floor,
A plurality of each of at least one end and the other end of the main frame are supported on the floors of the upper floor and the lower floor via a seismic isolation part, and the seismic isolation part is arranged around an axis perpendicular to the floor. A support shaft rotatably provided, a support rod having a linear trajectory orthogonal to the support shaft and fixing one longitudinal end of the linear trajectory to an upper end of the support shaft; and a support rod provided on the main frame. And a roller section that rolls on a linear track.

In this seismic isolation escalator, one end of the main frame is supported on the upper floor via a seismic isolation part, and the other end is supported on the lower floor via a seismic isolation part. When a relative positional displacement occurs between the upper floor and the lower floor, the support rod provided on the floor part rotates, and the roller part further rolls on the track surface of the support rod, so that the relative position is changed. Position displacement is absorbed. That is, even if a relative displacement occurs, the main frame is always supported by the floor via the seismic isolation part, and does not fall off the floor.

According to a second aspect of the present invention, in the seismic isolation escalator, the rolling raceway surface of the roller portion is an inclined surface which becomes lower toward one end of the support rod.

In this seismic isolation escalator, when the roller moves on the raceway, the gravity restores the roller to one end of the raceway, and the main frame is always located at a predetermined position.

According to a third aspect of the present invention, in the seismic isolation escalator, the support shaft is provided movably in a vertical direction with respect to the floor portion, and the roller portion is undetachably engaged with the support rod. I do.

In this seismic isolation escalator, when a vertical position displacement occurs between the upper floor and the lower floor, the roller portion and the support rod are integrated, and the support shaft moves in the vertical direction. To absorb the position displacement. For this reason, the roller part always engages with the support rod, the roller part does not come off from the support rod, and the main frame does not fall off the floor.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a seismic isolation escalator according to the present invention will be described below in detail with reference to the drawings. 1 is a side view of the seismic isolation escalator according to the present invention, FIG. 2 is an external front view of the seismic isolation escalator of FIG. 1, FIG. 3 is a plan view of an end of a main frame, and FIG. 5 is a sectional view taken along the line XX of FIG.

The escalator body 21 includes an endless circulation path 23, a drive mechanism (not shown) for operating the circulation path 23, side plates 25 provided on the left and right sides of the circulation path 23,
Endless handrail belt 2 circling the outer periphery of this side plate 25
7 mainly. The circulation path 23, the driving mechanism, the side plate 25, the handrail belt 27, and the like are supported and fixed to the main frame 29.

The upper floor 3 where the escalator body 21 is installed
Between the first floor and the lower floor 33, a seismic isolation layer (not shown) is provided. On the floor 35 of the upper floor 31 and the floor 37 of the lower floor 33,
Openings 39 and 41 through which the escalator body 21 is inserted are formed. Between the openings 39, 41 and the main frame 29,
Displacement absorption gap C for seismic isolation (for example, about 250 mm)
Is formed.

One end of the main frame 29 is supported on the floor 35 of the upper floor 31 via the seismic isolation part 43. The other end of the main frame 29 is supported on the floor 37 of the lower floor 33 via the seismic isolation part 43. As shown in FIG. 3, two seismic isolation units 43 are arranged in the width direction of one end and the other end of the main frame 29 (the width direction of the circulation path 23). That is, the main frame 29 includes the four seismic isolation units 4.
3 and are supported by floor portions 35 and 37.

As shown in FIG. 4, steps 45 are formed at the opening edges of the floors 35 and 37. The step portion 45 is provided with a support shaft 47 that is rotatable around a vertical axis.
The lower portion of the support shaft 47 is inserted into a concave bearing portion 49. A bearing seat 51 is provided on the bottom surface of the bearing 49.
At the center of the receiving seat 51, a concave groove 53 having a V-shaped cross section is formed. At the center of the lower surface of the support shaft 47, a tapered shaft core 55 is vertically provided. The shaft core 55 enters the recess 53 and is supported rotatably.

The support shaft 47 in the bearing portion 49 has a shaft core 55
A flange portion 57 is formed further above. On the lower surface of the flange portion 57, a plurality of recesses 5 are formed on a concentric circle of the shaft core 55.
9 are formed at equal intervals in the circumferential direction. Also, the seat 51
A plurality of recesses 59 are formed at equal intervals in the circumferential direction on the concentric circle of the recess groove 53 also on the upper surface of. A steel ball 61 is inserted between the concave portion 59 of the flange portion 57 and the concave portion 59 of the receiving seat 51. That is, the support shaft 47 is provided with the rollable steel ball 6.
The ball bearing has a ball bearing structure supported by the bearing 49 via the first bearing 1.

At the upper opening of the bearing 49, a closing plate 63 is fixedly protruding so as to reduce the diameter of the opening. The closing plate 63 regulates the projection of the flange portion 57 from the bearing portion 49. A gap 65 is formed between the closing plate 63 and the flange portion 57. Therefore, the support shaft 47 is movable in the vertical direction by the gap 65.

At the upper end of the support shaft 47, a support rod 67 having one longitudinal end fixed is provided. On the upper surface of the support rod 67, a linear track 69 is formed in the longitudinal direction. In the straight track 69, the track length L is set to approximately half (about 225 mm) of the displacement absorption gap in the seismic isolation layer. Straight track 6
9 is a pair of left and right side plates 71 long in the longitudinal direction of the support rod 67.
It is sandwiched between. Further, front and rear regulating plates 73 are provided at both longitudinal ends of the linear track 69. That is, the linear track 69 formed on the upper surface of the support rod 67 is surrounded by the side plate 71 and the front and rear regulating plate 73.

At the upper edge of the side plate 71 and the front and rear regulating plate 73,
An upper regulating plate 75 (see FIG. 5) is provided which projects horizontally toward the inside of the linear track 69.

The other end of the support rod 67 is rotatable around the support shaft 47 at a 360 ° angle.

The track surface 69a of the linear track 69 is
7, that is, an inclined surface that becomes lower toward the support shaft 47. A roller regulating recess 77 is formed at the bottom end of the inclined surface.

On the other hand, a hanging shaft 79 is provided on the lower surface of the main frame 29 so as to correspond to each support rod 67. The hanging shaft 79 is attached to the main frame 29 so as to be rotatable around a vertical axis. At the lower end of the hanging shaft 79, a horizontal shaft 8 is provided.
A roller portion 83 that can rotate around one turn is provided. As shown in FIG. 5, for example, a pair of roller units 83 are provided with the hanging shaft 79 interposed therebetween.

The roller portion 83 is provided on the linear track 6 of the support rod 67.
9 and rolls on a linear track 69. That is, the main frame 29 is movably supported by the support rod 67 via the roller portion 83 provided on the hanging shaft 79. The above-described pair of side plates 71, the front and rear regulating plates 73, and the upper regulating plate 75 accommodate the roller unit 83 in the linear track 69. Thus, the roller portion 83 is in a state of being engaged with the support rod 67 so as not to fall off the linear track 69.

A coil spring 85 is provided on the outer periphery of the shaft core 55. The coil spring 85 has a lower end fixed to the receiving seat 51 and an upper end fixed to the flange portion 57. In this state, the support rods 67 are arranged in a state where each of them is oriented in a predetermined direction. Therefore, the support rod 67 rotated in a direction other than the predetermined direction is restored in the predetermined direction again by the spring force of the coil spring 85. The predetermined direction of the support rod 67 is such that the tip of the seismic isolation part 43 of the upper floor 31 is directed to the left side in FIG. 4, and the tip of the support rod 67 is directed to the right side opposite to FIG. Direction (see the state of FIG. 1).

A tread 87 (see FIG. 4) is provided between the floor 35 of the upper floor 31 and the main frame 29. Also,
A similar tread plate 87 is provided between the floor 37 of the lower floor 33 and the main frame 29 (not shown). Thereby, the step part 45 between the floor parts 35 and 37 and the main frame 29 is closed. The tread plate 87 has at least floor portions 35 and 37.
Alternatively, it is slidable relative to the main frame 29.

Next, the operation of the seismic isolation escalator 91 configured as described above will be described. 6 is an explanatory view showing the patterns of the displacement directions of the upper floor and the lower floor, FIG. 7 is an explanatory view showing the seismic isolation units of the upper floor and the lower floor in a normal state, and FIG. FIG. 9 is an explanatory diagram showing the state of the seismic isolation unit when moving to the left, and FIG. 9 is an explanatory diagram showing the state of the seismic isolation unit when the upper floor and the lower floor move to the right in the figure.

As shown in FIG. 7, normally, in the seismic isolation section 43 of the upper floor 31, the tip of the support rod 67 is directed to the left by the coil spring 85 shown in FIG. In addition, seismic isolation part 4 of lower floor 33
3 has a tip turned rightward by a coil spring 85. Accordingly, the respective roller portions 83 are arranged on the center of the support shaft 47 due to the inclination of the raceway surface 69a.

On the other hand, when the upper floor 31 and the lower floor 33 move in the directions of the arrows a and c shown in FIG.
A relative positional displacement occurs between 5, 37 and the main frame 29. This displacement is absorbed by the upper floor 31 and one end of the main frame 29, and the lower floor 33 and the other end of the main frame 29. That is, as shown in FIG. 8, between the upper floor 31 and the main frame 29, the support rod 67 rotates rightward, and the roller portion 83 rolls toward the tip end (right end direction) of the support rod 67. by doing,
This displacement is absorbed. The lower floor 33 and the main frame 29
The position displacement is absorbed by the roller 83 rolling toward the tip end (right end direction) of the support rod 67.

When the upper floor 31 and the lower floor 33 move in the directions of arrows b and d shown in FIG. 6, the roller 83 is moved between the upper floor 31 and the main frame 29 as shown in FIG. Support rod 6
By rolling toward the tip end (left end direction) of 7, the positional displacement is absorbed. Further, between the lower floor 33 and the main frame 29, the support rod 67 rotates leftward, and the roller portion 83 rolls toward the tip end (left end direction) of the support rod 67, so that the positional displacement is reduced. Absorbed.

Further, when the upper floor 31 and the lower floor 33 move in the directions of arrows b and c shown in FIG. 6, between the upper floor 31 and the main frame 29, as shown in FIG. The position displacement is absorbed by the portion 83 rolling toward the tip end (left end direction) of the support rod 67. The lower floor 33 and the main frame 29
8B, the roller portion 83 rolls toward the tip end (right end direction) of the support rod 67, thereby absorbing the positional displacement.

When the upper floor 31 and the lower floor 33 move in the directions of the arrows a and d shown in FIG. 6, between the upper floor 31 and the main frame 29, as shown in FIG. The position displacement is absorbed by the rod 67 rotating to the right and the roller portion 83 rolling toward the tip end (right end direction) of the support rod 67. 9B between the lower floor 33 and the main frame 29.
As shown in FIG. 7, the support rod 67 rotates to the left,
3 is rolled toward the tip end (left end direction) of the support rod 67, whereby the positional displacement is absorbed.

As described above, the seismic isolation escalator 91 described above is used.
The floors 35 and 37 of the upper floor 31 and the lower floor 33 via the seismic isolation part 43 at one end and the other end of the main frame 29 respectively.
Supported. The seismic isolation unit 43 includes a support shaft 47 provided on the floors 35 and 37 so as to be rotatable around a vertical axis.
And a support rod 67 having a linear track 69 and having one longitudinal end fixed to the upper end of the support shaft 47, and a roller portion 83 provided on the main frame 29 and rolling on the linear track 69.
Therefore, each support portion of the main frame 29 can be freely supported by the rotation of the support rod 67 and the movement of the roller portion 83. The moving range is an arbitrary position within a circle having the support rod 67 as a radius around the support shaft 47.

As a result, by sandwiching the seismic isolation layer, the relative position displacement can be absorbed even between the upper floor 31 and the lower floor 33 where the relative position may have a large displacement,
The escalator body 21 can be installed without dropping the main frame 29.

The rolling track surface 69 of the roller portion 83 rolls.
Since a is an inclined surface that becomes lower toward one end of the support rod 67, even if the roller 83 moves, the roller 83 can be restored to one end of the track surface 69a by gravity. Thereby, the escalator main body 21 can always be arranged at a predetermined position in a normal state.

Further, since the support shaft 47 is provided so as to be movable in the vertical direction and the roller portion 83 is engaged so as not to drop off from the support rod 67, the support shaft 47 is provided between the upper floor 31 and the lower floor 33 in the vertical direction. When the position displacement occurs, the support shaft 47 can be moved in the vertical direction to support the main frame 29 without falling off. Although the seismic isolation escalator 91 according to the present invention has been described as a configuration in which one end and the other end of the main frame 29 are supported by the seismic isolation portion 43 at two locations, however, it is not necessarily at two locations if the function of seismic isolation can be exerted. It is not limited to support.

[0036]

As described above in detail, the seismic isolation escalator according to the first aspect of the present invention is characterized in that at least one end and the other end of the main frame are connected to the upper floor and the lower floor via the seismic isolation part. Supported on the floor of the floor. The seismic isolation unit includes a rotatable support shaft provided on the floor, a support rod having a linear track and having one longitudinal end fixed to the support shaft, and a roller provided on the main frame and rolling on the linear track. And a part. Therefore, the main frame can be movably supported by the rotation of the support rod and the movement of the roller. As a result, the escalator body can be erected even between the upper floor and the lower floor sandwiching the seismic isolation layer.

In the seismic isolation escalator according to the second aspect, since the rolling raceway surface of the roller portion is formed by an inclined surface which becomes lower toward one end of the support rod, the roller portion is restored to one end side of the raceway surface by gravity. And the escalator body can always be arranged at a predetermined position.

In the seismic isolation escalator of the third aspect, the support shaft is provided so as to be movable in the vertical direction, and the roller portion is engaged with the support rod so as not to fall off. Even when a positional displacement in the direction occurs, the main frame can be supported without falling off.

[Brief description of the drawings]

FIG. 1 is a side view of a seismic isolation escalator according to the present invention.

FIG. 2 is an external front view of the seismic isolation escalator of FIG.

FIG. 3 is a plan view of an end of a main frame.

FIG. 4 is an enlarged view of a seismic isolation unit.

FIG. 5 is a sectional view taken along line XX of FIG. 4;

FIG. 6 is an explanatory diagram showing patterns of displacement directions of an upper floor and a lower floor.

FIG. 7 is an explanatory view showing an upper floor and a lower floor seismic isolation unit in a normal state.

FIG. 8 is an explanatory diagram showing the state of the seismic isolation unit when the upper floor and the lower floor move leftward in the figure.

FIG. 9 is an explanatory diagram showing the state of the seismic isolation unit when the upper floor and the lower floor move rightward in the figure.

FIG. 10 is a side view of a conventional escalator.

FIG. 11 is an enlarged view of a conventional main frame support.

[Explanation of symbols]

23 ... circulation path, 29 ... main frame, 31 ... upper floor, 33 ... lower floor,
35, 37 ... floor part, 43 ... seismic isolation part, 47 ... support shaft, 67
... Supporting rod, 69 ... Linear track, 69a ... Track surface, 83 ... Roller part, 91 ... Seismic isolation escalator

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Fujimura Kashima Construction Co., Ltd. 1-2-7 Moto-Akasaka, Minato-ku, Tokyo (56) References JP-A-10-291759 (JP, A) JP-A-Hei 10-194646 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B66B 21/00-31/02

Claims (3)

(57) [Claims] An endless circulating path, a driving mechanism for operating the circulating path, and a main frame for supporting and fixing at least the circulating path and the driving mechanism, one end of the main frame being inclined in a longitudinal direction. In the escalator supporting the upper floor while supporting the other end on the lower floor, at least one end and the other end of the main frame are respectively placed on the upper floor and the lower floor via seismic isolation parts. The seismic isolation unit supports a support shaft rotatably provided on the floor around a vertical axis, and a linear orbit orthogonal to the support shaft, and one end in the longitudinal direction of the linear orbit. A seismic isolation escalator comprising: a support rod fixed to an upper end of the support shaft; and a roller provided on the main frame and rolling on the linear track. 2. The seismic isolation escalator according to claim 1, wherein the raceway surface on which the roller portion rolls is an inclined surface that decreases toward one end of the support rod. 3. The apparatus according to claim 1, wherein the support shaft is provided so as to be movable in a vertical direction with respect to the floor, and the roller is engaged with the support rod so as not to fall off. Item 2. The seismic isolation escalator according to item 2.