JPS6132950Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Technical Field of the Invention] This invention relates to an escalator in which a large number of steps are connected to an endless step chain so as to rotate. [Prior Art] Conventionally, escalators generally have a truss 1 that spans the upper and lower floors of a building, as shown in FIGS. A pair of endless left and right step chains 4 are provided so as to be wound around both sprockets 2 and 3, and front wheel shafts 5 are provided at equal pitches on each of the left and right step chains 4. A large number of steps 6 are attached to the wheel axle 5, one by one, with their yokes 7 shaped like horse-riders, and furthermore, a pair of left and right front wheels 8 are provided on the front wheel axle of each step 6 to guide the left and right front wheels 8. Upper and lower front wheel guide rails 10A and 10B, and pairs of upper and lower rear wheel guide rails 11A and 11 on the left and right that guide the left and right rear wheels 9 assembled to the yoke 7 of each step 6.
In this structure, each step 6 is rotated by the drive of the step chain 4 along these guide rails. Here, the above upper and lower front wheel guide rails 10
The upper and lower rear wheel guide rails 11A and 11B each have ends and are separated from each other at the reversed ends of the upper and lower floors. Circular end reversal rail 1
1C and 11D are connected to form an endless shape. For example, in ascending operation, the step 6 is moved from the lower floor side inversion section to the upper front and rear wheel guide rails 10A, 1.
1A so that passengers can get on the rails, first move in the horizontal direction, and then pass through the lower curves E of the same rails 10A and 11A and move on to the next example, for example.
It ascends the 30° ascending slope section (not shown) in a horizontal state, then passes through the upper curved section F of the same rails 10A and 11A and proceeds horizontally again to the upper floor inversion section, where the front wheels 8 is separated from the upper end of the upper front wheel guide rail 10A, and the front wheel axle 5 comes to be guided by the sprocket 2, and the rear wheel 9
enters the cross-sectional semicircular reversing rail 11C and begins to roll, thereby inverting the step 6 downward. In this way, the upside down step 6 moves horizontally, with the front wheel 8 moving onto the lower end of the lower front wheel guide rail 10B and the rear wheel 9 moving onto the lower rear wheel guide rail 11B. It passes through the upper curved part G of the rails 10B, 11B, moves down a downward slope part (not shown) that is substantially parallel to the above-mentioned upward slope part, and then moves down the downward slope part (not shown) of the same rails 10B, 1
After passing the lower curved part H of 1B, it moves horizontally and moves to the lower floor side inversion, where the front wheel 8 separates from the lower floor side end of the lower front wheel guide rail 10B and connects to the sprocket 3.
At the same time, the rear wheel 9 enters the circular arc-shaped reversal 11D on the lower floor side and rolls, so that the step 6 is reversed upward, and the front wheel 8 moves into the upper front wheel guide rail 1.
As the vehicle moves to the lower floor side end of 0A, the rear wheel 9 moves onto the upper rear wheel guide rail 11A, thereby returning to the upward horizontal state again. In the conventional escalator described above, the pitch of each step 6 is generally about 400 mm, and the step chain 4 has 6 links per pitch, and the sprockets 2 and 3 of the upper and lower floor inversion parts are both of the same diameter. , the number of teeth is 36, and the diameter D is 770 mm, and the semicircular reversing rails 11C and 11D of the upper and lower floor reversing sections of the rear wheel guide rail have the same radius, with an inner diameter r of 147.5 mm and an outer diameter. R is 228mm, and the arc center of each reversing rail 11C, 11D
O' is eccentrically shifted upward from the axis O of each sprocket 2, 3, and the eccentricity t is 15 mm.
It is said that With this, when each step 6 advances on the upper side, it will be in an upward horizontal state between the upper and lower floor inversion parts, and when it returns to the lower side, it will be halfway and lower floor inversion from the position directly below the axis 2a of the upper floor inversion part. Until they reach the position directly below the axis O of the section, they are all upside down and tilted forward downward, especially near the upper curved section G of the lower front and rear wheel guide rails 10B and 11B and the semicircular inverted rail 11D on the upper floor. In order to avoid contact interference between the front and rear steps 6, 6 on the way, the shape and dimensions were set to have a sufficient margin. By the way, in recent years, energy saving and space-saving
As social demands such as material saving have grown, the diameter D of sprockets 2 and 3 has been reduced in escalators to increase the height of truss 1 (previously, the upper floor height J =
1150mm, upper floor height J′ = 1100mm) as much as possible to save space and reduce weight.
There has been a desire to save energy, increase efficiency, save materials, etc. [Purpose of the invention] This invention was devised in view of the above circumstances. It is possible to use existing steps, the front and rear steps can rotate smoothly without interference, and the sprocket diameter of the upper and lower floor reversals is small. The purpose of the present invention is to provide an escalator that is small and has a reduced truss height, and can be of great use in saving space and energy when installed in a building, increasing efficiency, saving materials, etc. due to its small size and light weight. . [Structure of the device (outline)] This device is designed to increase the number of teeth and diameter of the sprocket at the end reversing section on the upper floor and the radius of the semicircular reversing rail for guiding the rear wheels on the upper floor to the same size as the existing one. The number of teeth and the diameter of the sprocket at the end reversal part on the lower floor side are reduced to the same extent as those on the upper floor side, and By providing a semicircular reversing rail for guiding the rear wheel with a slightly larger radius than the one on the upper floor side, and with the amount of eccentricity from the axis of the sprocket smaller than that on the upper floor side or zero. , the required vertical height of the truss is greatly reduced compared to the conventional one, making it more compact, while satisfying the condition that the front and rear steps do not interfere with each other at the upper and lower floor reversals and at any point along the way. It features an escalator that can be used to [Embodiment of the invention] Hereinafter, an embodiment of this invention will be described together with the technical problems up to this point. In FIGS. 4 to 6, parts having the same configuration as those shown in FIGS. 1 and 2 are given the same reference numerals in the drawings to simplify the explanation. First of all, Fig. 4 shows the reversed part of the escalator on the upper floor, where sprocket 2A has a diameter D of 770 mm, whereas the conventional sprocket has 36 teeth (six times the number of links in step chain 4). On the other hand, the number of teeth is 30 (5 times the number of links in step chain 4) and the diameter
D ₁ has been reduced to 640 mm, and accordingly, the upper reversing rail 11C 1 of the upper and lower rear wheel guide rails 11A ₁ and 11B ₁ has an inner diameter _{r 1 that} is smaller than that of the conventional one.
From 147.5mm to 83.5mm, outer diameter R ₁ from 228mm
It has been reduced to 164mm. In addition, the reversal rail 11C ₁ with respect to the axis O of the upper sprocket 2A
The upward eccentricity t of the center O' is 15 as before.
mm. Upper and lower front wheel guide rails 1
0A ₁ and 10B ₁ are arranged in the same positional relationship as before with respect to the sprocket 2A. The dimensions and positional relationships of these parts are such that the steps 6 are the same size as the existing ones, and are arranged at the same pitch as before, and also so that when the upper floor reversing part is reversed and the parts are returned to the lower floor, they do not interfere with the previous and front ones. This is the minimum necessary condition for rotation. In other words, the step 6 moves upward along the upper front and rear wheel guide rails 10A ₁ and 11A ₁ in a horizontal state, passes through the upper curved part F, and then moves horizontally in the upper floor inversion part while remaining in a horizontal state. Move to the axis O of sprocket 2A, and from there connect sprocket 2A and upper floor side semicircular reversing rail 11C ₁
The step 6 is guided by the step 6 and reverses downward without interfering with the front and rear steps, and when it comes directly under the axis O of the upper sprocket 2A, the step 6 is upside down and in a tilted position with the front downward. The front end 6b of the rear step 6 that is trailing behind the rear end 6a of the front step 6 is in a position where it is lowered by more than the thickness k of the step, and the front end 6a of the front step 6 is in a position where the front end 6b of the rear step 6 is lowered by more than the thickness k of the step. While being guided by the lower front and rear wheel guide rails 10B ₁ and 11B ₁ without interference, the vehicle can move to the lower floor by passing through the upper curved portion G of the rails. By taking the above-mentioned dimensions and positional relationships of each part, the sprocket 2A of the reversible part on the upper floor side can be reduced to the diameter D ₁ , and the height J ₁ on the upper floor side of the truss 1A can be reduced from the conventional 1150 mm to 1000 mm, that is, The size of each device has been reduced by approximately 150 mm,
The weight can be reduced, the required power can be reduced, etc. By the way, there is no problem with the dimensions and positional relationships of each part in the upper floor terminal section as described above, but if this is applied to the lower floor inversion section in the same way as before, that is, as shown in Fig. 5. As shown, the lower floor sprocket 3A has the same diameter D ₁ as the upper floor sprocket.
The lower floor side semicircular reversing rail 11D ₁ has the same inner diameter r ₁ and outer diameter R ₁ as the upper floor side, and the arc center O' of the semicircular reversing rail 11D ₁ is above the sprocket axis O. If the eccentricity of the truss 1A is set to t, which is the same as that of the upper floor, the height of the lower floor of the truss 1A can be reduced to J ₁ = 1000 mm, which is the same as the height of the upper floor.
However, as shown in FIG. 5, during the reversal from the lower stage side to the upper stage side, the front and rear steps 6, 6 become jammed, causing interference such that the yokes 7, 7 of both are in contact with each other.
This makes rotation impossible. However, as mentioned above, in order to achieve a smaller diameter sprocket, the shape and dimensions of the yoke 7 of each step 6 were modified to avoid interference, but this would not be compatible with existing steps and would cause great inconvenience. A problem has arisen that has resulted in a significant increase in costs. Therefore, in this invention, the dimensions and positional relationships of each part in the upper floor inversion part are as shown in Figure 4, while the dimensions and positional relationships of each part in the lower floor inversion part are as shown in Figure 6. , attempted to solve the above problem. That is, in Fig. 6, as intended, the sprocket 3A of the lower floor reversible part has the same number of teeth and the same diameter _D1 as that of the upper reversible part shown in Fig. 4, so that the truss It is possible to reduce the height of the lower floor side of 1A to the same height as the upper floor side, J ₁ = 1000 mm. On the other hand, the inner and outer diameters of the semicircular reversible rail _11D2 on the lower floor are much smaller than the conventional r = 147.5 mm, R = 228 mm, but compared to those on the upper floor in Fig. 4. Also, the reduction ratio is reduced, that is, the inner diameter r 1 of the semicircular reversing rail 11C ₁ on the upper floor is 83.5 mm, the outer diameter R ₁ = 164 mm, and the inner diameter r ₂ = r ₂ of the semicircular reversing rail 11D ₂ on the lower floor.
Make the inner and outer diameters larger by 15mm, such that the outer diameter is 98.5mm and the outer diameter R ₂ = 179mm. Further, the semicircular reversing rail _11D2 on the lower floor side is installed in a positional relationship such that its arc center O' coincides with the axis O of the lower floor sprocket 3A without being eccentric upward. In other words, as mentioned above, the amount of eccentricity above the sprocket axis is subtracted by the increase in the inner and outer diameters by 15 mm, and as a result, the amount of eccentricity becomes zero. By having a configuration with such dimensions and positional relationships, the front and rear wheel guide rails on the lower floor side 10B ₁ , 11B ₁
The step 6, which has descended toward the lower floor reversal section in a downward-sloping posture as described above, assumes a horizontal posture at a position directly below the axis O of the lower floor sprocket, that is, The position is the same as when the reversal is started at the upper terminal section shown in Figure 4, and the step ₆ is now moved along the lower floor semicircular reversing rail 11D2.
The stairs 6 move inverted without interfering with each other while maintaining a gap of several millimeters in the front and back, and the steps 6, which are inverted to the upper floor side, are in the upward horizontal position as before and can be moved with passengers on board. . Here, a list of dimensions and positional relationships of each part between the conventional and the present invention is as follows.

[Effect of idea]

Since this idea has been developed as detailed above, there is no problem caused by the interference of steps, and the diameter of the upper and lower floor sprockets can be made smaller, which allows the height of the truss to be reduced even if existing steps are used. It can be designed to have a large width, and because it is small and lightweight, it does not take up much space when installed in a building, and it can be of great use in saving energy, increasing efficiency, and saving materials.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of the upper-floor reversing part showing a conventional example, Fig. 2 is a schematic diagram of the lower-floor reversing part of the conventional example, and Fig. 3 shows the - line in Fig. 1. 4 is a schematic configuration diagram of the upper floor side reversal section showing an embodiment of this invention, and FIG. 5 is a lower floor side reversal diagram for explaining the problem that became the technical background of this invention. FIG. 6 is a schematic diagram of the lower floor side reversing section in the above-mentioned embodiment of this invention. 1, 1A...Truss, 2, 2A...Upper floor sprocket, 3, 3A...Lower floor sprocket, 4
...Step chain, 5...Front wheel axle, 6...Step,
7... Yoke, 8... Front wheel, 9... Rear wheel, 10
A, 10A ₁ , 10B, 10B ₁ ... Upper/lower front wheel guide rail, 11A, 11A ₁ , 11B, 11
B ₁ ... Upper/lower rear wheel guide rail, 11C, 1
1C ₁ , 11D, 11D ₁ , 11D ₂ ... Upper/lower side semicircular reversing rail, D, D ₁ ... Sprocket diameter, E, H ... Lower curved part, F, G... Upper curved part ,
J, J', J ₁ ...Truss height, O...Sprocket axis, O'...Semicircular reversing rail arc center, t
... Eccentricity, k ... Thickness of the treadle.

Claims (1)

[Scope of utility model registration request] In an escalator in which a large number of steps are arranged in an endless chain of steps wrapped around the sprockets of the upper and lower reversing parts, and guide rails for the front and rear wheels of the steps are provided, the upper reversing part Reduce the number of teeth and diameter of the sprocket and the radius of the upper semicircular reversible rail of the rear wheel guide rail to the extent that each step does not interfere with the front and rear, and reduce the number of teeth of the sprocket on the lower reversible part. and the diameter of the rear wheel guide rail is reduced to be equal to that of the upper floor, and the radius of the lower semicircular reversing rail of the rear wheel guide rail is reduced slightly larger than that of the upper floor, and An escalator characterized in that the upward eccentricity of the arc center of the side reversing rail from the axis of the sprocket on the lower floor side is smaller than that on the upper floor side or zero.