JPH0699101B2 - Intermediate support device for passenger conveyor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an intermediate support device for a passenger conveyor that supports both ends and the middle of the passenger conveyor body such as an escalator and a moving passage on a support surface such as a building. Is.

[Conventional technology]

Conventionally, as shown in Japanese Utility Model Publication No. Sho 49-73977, the load detection mechanism measures the gap between the middle of the passenger conveyor main body and the support placed on the support surface of the building, and the load is set to the set value. There is an intermediate supporting device for a passenger conveyor in which an adjusting plate is inserted in the gap so that the support and the adjusting plate are fixed, the load detecting mechanism is removed, and the height is set to a predetermined height.

Further, conventionally, as shown in Japanese Utility Model Laid-Open No. 51-116591, there has been an intermediate support device for a passenger conveyor in which a support body is supported on a support surface so that the middle of the passenger conveyor can be slid and vertically rotated.

FIG. 3 shows a typical passenger conveyor. In the figure,
1 is a passenger conveyor main body, 2 and 3 are end supports for supporting one end and the other end of the passenger conveyor main body 1 on supporting surfaces 4 and 5 such as building beams and floors, and 6 is the passenger conveyor main body 1. An intermediate supporting device for supporting the intermediate portion on the supporting surface 4 and an expansion 7 provided at the separating portion of the supporting surfaces 4 and 5. Further, as shown in FIG. 6, the intermediate support device 6 has a substrate 8 supported on a support surface 4 and is fixed by anchor bolts 9 and nuts 10, and a plurality of adjustment members are provided on a support member 11 provided on the substrate 8. A mounting member 13 provided on the lower surface of the frame 1a of the conveyor main body 1 via a plate is fastened and fixed by a bolt 14.

[Problems to be solved by the invention]

In a passenger conveyor as shown in FIG. 3, when a building is built on a soft ground such as a landfill, the building begins to sink with the passage of time, and the ground or the basic structure of the building or the building As shown in FIG. 4, due to the difference in the weight of the intermediate support device 6, the other support surface 5 is undesirably subsided by the subsidence amount 8 more than the other support surface 5 is provided. is there.

When such uneven settlement occurs, as shown in FIG.
The bending moment M ₁ exerted on the frame 1a of the passenger conveyor main body 1 by the reaction force of the intermediate supporting device by the intermediate support device 6 immediately after the installation of the passenger conveyor main body 1 depends on the sinking amount 8 as shown by the bending moment M ₂ It becomes bigger as you destroy 1a.

However, in the conventional Japanese Utility Model Publication No. Sho 49-73997,
At the time of installing the intermediate supporting device, that is, it is possible to properly set the bending moment M ₁ with respect to the frame at the time of installing the passenger conveyor, but there is a problem that it is not possible to cope with the increase in the bending moment due to the uneven settlement of the supporting surface of the building. there were.

Further, in the conventional Japanese Utility Model Publication No. 51-116591,
With a support that can slide in the middle of the passenger conveyor body and rotate in the vertical direction, excessive stress applied to the passenger conveyor body is released by the hinge and sliding mechanism, and it operates according to the increase or decrease in stress, so passengers The passenger conveyor body expands and contracts immediately after installation due to fluctuations in the number, etc., and this body shakes or vibrates, making passengers uncomfortable, and it cannot be applied when the unequal settlement amount 8 is large. There was a problem.

This invention has been made to solve the above problems, the support portion of the passenger conveyor body by the support,
To obtain an intermediate support device for a passenger conveyor that can effectively deal with a large bending moment due to uneven settlement of a building, does not cause passenger discomfort, and can easily adjust the moment. Has an aim.

[Means for solving problems]

The intermediate support device of the passenger conveyor according to the present invention supports the middle of the passenger conveyor main body through a plurality of detachable adjusting plates by a support member fixed to the support surface, and the support member has a load less than a set value. The height is constant, and the height expands and contracts when the height exceeds a set value.

(Function) The intermediate support device for the passenger conveyor in the present invention is a little before the bending moment M ₁ of the intermediate support portion of the passenger conveyor main body due to the support immediately after installation causes the frame of the passenger conveyor main body to break due to unequal sinking of the support surface. Bending moment M ₃
(See Fig. 5), the height of the support contracts, and the bending moment M ₃ is set as a set value so that the support does not contract below M ₃ even if it exceeds the moment M ₁ . it is possible to reduce the oscillations and vibrations of the passenger conveyor main body, and the height of the support to stretch when it reaches the moment M _3, by removing the portion of the adjustment plate in a state of being somewhat elastic, the moment M ₁ It can be easily returned to the state, and therefore, even when the uneven settlement of the support surface is large, it can be dealt with easily and sufficiently.

〔Example〕

 An embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, the same reference numerals as those in FIGS. 3 and 6 indicate corresponding parts, and the support 15 of the intermediate support device 6 has a plurality of (4) vertical guide rods 16 welded to the base 8 on the substrate 8. The upper plate 17 is fixed and fitted to the guide rod 16 so as to be slidable in the vertical direction, and the upper surface of the upper plate 17 is supported by the nuts 22 tightened on the guide rod 16.
A compression spring 18 is interposed between the substrate 8 and the upper plate 17. Further, a plurality of adjusting plates 12 are inserted between the upper surface of the upper plate 17 and the mounting member 13 fixed to the lower surface of the frame 1a of the passenger conveyor body 1, and the upper plate 17 and the adjusting plate 12 are attached from below by bolts 14. It is fixed to the mounting member 13 together. Then, the load of the conveyor body 1 is passed through the mounting member 13, the adjusting plate 12, the upper plate 17, the compression spring 18 and the substrate 8 which are provided in the middle thereof, and the supporting surface 4
The compression spring 18 is configured to have a constant height under a load until it reaches a set value, and the height is compressed when a load equal to or more than the set value is received. The structure of this embodiment other than that described above is the same as the conventional structure shown in FIGS.

Next, the operation of the intermediate support device of the embodiment configured as described above will be described.

FIG. 4 shows an unequal subsidence in which one support surface 4 on which the intermediate support device 6 corresponding to FIG. 3 is supported and the other support surface is horizontal and the other support surface is excessively submerged. As shown in FIG. 5, when the reaction force of the intermediate support portion of the conveyor body 1 immediately after installation exerts a large bending moment M ₁ on the frame 1a, the moment M ₂ may increase depending on the amount of subsidence. It may become larger as the frame 1a breaks, but it is a bending moment just before the frame 1a breaks.
By setting the spring force so that the compression spring 18 of the support 15 contracts with the load when it reaches M ₃ , the height of the support 15 contracts when this load is exceeded, and the bending moment that occurs due to uneven settlement Can be prevented from increasing. And the spring
In order to return the contraction of the spring 18, when the contraction reaches a predetermined amount, the bolt 14 is loosened or removed and the adjusting plate 12 is removed to restore the spring 18 to the state before contracting again.

Therefore, in this embodiment, when the amount of uneven settlement of the support surface becomes excessive, the spring 18 bends and the height of the support body 15 is reduced, thereby reducing the bending moment of the frame 1a of the conveyor body 1, Since the frame can be prevented from being destroyed and the spring 18 can be prevented from shrinking too much by removing the adjusting plate 12, the frame 1a can be sufficiently protected even if the amount of uneven settlement of the supporting surface is large, which is safe. Is. Also, in the _one that starts the spring expansion and contraction by the reaction force at the bending moment M ₁ at the time of installing the passenger conveyor, the conveyor main body sways or vibrates due to the fluctuation of passengers, which gives passengers discomfort,
In the intermediate support device of this embodiment, when the bending moment M ₃ is exceeded, the spring 18 is set to contract, so that the conveyor body 1 does not sway or vibrate due to passenger fluctuations, etc. Never give.

FIG. 2 shows another embodiment of the present invention. In FIG. 2, the same reference numerals as those in FIG. 1 indicate corresponding parts, 19 is an abnormality detection switch consisting of a limit switch fixed on one side of the substrate 8 via a bracket 20, and 21 is a lower surface of the upper plate 17. This is a fixed switch operation member, and the operation member 21 has its tip end portion arranged on the detection switch 19 so as to face each other with a gap in the upward and downward directions.

When the bending moment M ₃ of the frame 1a of the conveyor main body 1 approaches M ₂ due to uneven subsidence of the supporting surface, the compression spring 18 contracts due to the load, and the upper plate 17 descends. Also moves down and presses the detection switch 19 to operate it. An alarm device (not shown) such as a buzzer is activated by the operation of the detection switch 19 to issue an alarm, and the operator performs the same operation as that of the embodiment shown in FIG. By reducing the number of 12, the overall height of the intermediate support device 6 is reduced, the intermediate support portion of the frame 1a is reduced to less than the bending moment M ₃ , the height of the spring 18 is increased, and the upper plate 17 and the operation are increased. The member 21 is raised to return the positional relationship between the operation member 21 and the detection switch 19 to the state before the spring 18 contracts.

The structure and operation of this embodiment other than those described above are the same as those shown in FIG. In the embodiment shown in FIG. 2, the detection switch 19 gives an alarm to prevent the bending moment M _{3 from} destroying the frame 1a more reliably than that shown in FIG. , Can improve safety.

〔The invention's effect〕

As described above, according to the present invention, the middle of the passenger conveyor main body, the height is constant when the load is less than the predetermined value, and the height expands and contracts when receiving the load of the set value or more,
Since it is supported on the support surface via a plurality of removable adjustment plates, it is possible to effectively deal with the case where the amount of uneven settlement of the support surface is large, and an excessive moment is applied to the intermediate support part of the passenger conveyor body, There is an effect that it is possible to reliably prevent the conveyor main body from being destroyed, and further, to give passengers no discomfort.

[Brief description of drawings]

1 and 2 are side views showing an intermediate support device for a passenger conveyor according to one embodiment and another embodiment of the present invention, respectively, and FIG. 3 is a side view showing a passenger conveyor having a conventional intermediate support device, FIG. 4 is a side view showing a state where uneven subsidence occurs on the support surface, and FIG. 5 is a diagram showing a relationship between the uneven subsidence of the support surface and a bending moment applied to the frame of the passenger conveyor body, FIG. FIG. 6 is a side view showing a conventional intermediate support device. 1 ... Passenger conveyor main body, 1a ... Frame, 2,3 ... End support, 4,5 ... Support surface, 6 ... Intermediate support device, 8 ...
… Substrate, 12 …… Adjustment plate, 13 …… Mounting member, 14 …… Bolt, 15 …… Support, 16 …… Guide rod, 17 …… Upper plate, 18…
… Compression spring, 19 …… Abnormality detection switch, 20 …… Bracket, 21 …… Switch operation member. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (2)

[Claims] 1. A passenger conveyor in which both ends and the middle of the passenger conveyor main body are supported on supporting surfaces, the middle of the passenger conveyor main body is fixed to the supporting surface, and the height is constant at a set value or more under a load less than the set value. An intermediate support device for a passenger conveyor, characterized in that it is supported through a plurality of detachable adjusting plates by a support body whose height expands and contracts when subjected to the load. 2. The intermediate support device for a passenger conveyor according to claim 1, wherein the support includes an abnormality detection switch that issues an alarm when a change in the height of the support reaches a predetermined value.