JPH026055Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a passenger conveyor, and more particularly to a passenger conveyor with an improved guide structure for steps.

[Conventional technology]

A passenger conveyor, such as an escalator, is constructed as shown in FIGS. 1 and 2. That is, a plurality of steps 1 each have a shaft 2 fixed to each front side thereof, the shaft 2 of each step 1 is connected endlessly by a step chain 3, and this step chain 3 is arranged at the upper and lower parts of the drive machine ( (not shown), and the vehicle was driven through this.

Further, the step 1 supports front wheels 4 on shafts 2 on both sides, and runs smoothly on a guide rail 5 via the front wheels 4.

The structure of the front wheel 4 is shown in Fig. 3. The boss a, which is a strength member of the front wheel 4, is made of cast material, etc., and the inner surface of the boss a is machined to form a rolling element. Incorporate two bearings B into the
Insert the shaft 2 into the bearing b, and then insert the boss a and the shaft 2.
It is fixed with a retaining ring d. Furthermore, a hard rubber c is integrally baked on the surface of the boss a, so that the passenger on the step 1 does not feel uncomfortable and runs smoothly on the surface of the guide rail 5.

Note that the guide rail 5 has a width W of the frame body 7.
The components 7' and 7'' are fixed to the components 7' and 7'' extending over the front wheel 4 with fixing bolts 9 via a liner 8 for fine centering adjustment while ensuring a gap g with the front wheel 4.

[The problem that the idea attempts to solve]

As mentioned above, the front wheel 4 is made of the material of the boss a and the rubber c.
It is expensive due to the materials, machining of bearing b and boss a, and furthermore, escalator 1
Approximately 120 pieces are used per unit, which contributes to the increased cost of escalators.

Furthermore, the guide rail 5 that guides and runs the steps 1 forms a running surface for the front wheels 4 and the rear wheels 6 that are pivotally supported on both rear sides of the steps 1, as shown in FIG. 2, and has a complicated shape. . This guide rail 5 is manufactured using a special mold to form dimensions e and e' with high precision.
The total length of each guide rail 5 is approximately 3 m,
In particular, the dimension e of this long product needs to be manufactured with high precision over the entire length, and together with the front wheel 4, it is extremely expensive, including the cost of a dedicated press mold and manufacturing time, etc., making it difficult to make an escalator in terms of cost. It's summery.

Therefore, if the shapes and configurations of the front wheels 4 and guide rails 5 can be simplified, a lower cost escalator can be obtained.

The purpose of this invention is to reduce the number of component parts of steps,
To provide a passenger conveyor whose shape is simple and easy to install without adding guide rails.

[Means to solve the problem]

The object of the present invention is to make a shaft protrude from both front sides of the step and connect it to the step chain, to support a rear wheel pivotally on both rear sides of the step, and to make the guide rail L-shaped in cross section. This can be achieved by providing a chain guide for guiding the chain roller and left and right link plates of the step chain at the upper part of the vertical side of the step chain, and by making the horizontal side of the L-shaped cross section the running path for the rear wheels.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 4 and 5. Step 1 has shafts 2 on both sides of the front in the direction of travel.
It has a structure in which the rear wheels 6 are supported pivotally on both rear sides. The protruding shaft 2 is connected to a step chain 3 to drive the step 1. And guide rail 20
are made of steel having an L-shaped cross section, and are disposed on both sides of the step 1 along the direction of step movement. The guide rail 20, which has an L-shaped cross section, is arranged with its horizontal side 20H facing the step 1 side, and is fixed onto a component 7' that straddles a pair of left and right frame bodies 7 arranged at an interval of width W'. ing. When fixing the guide rail 20 onto the component 7', a plurality of mounting plates 22 are welded to the bottom of the horizontal side 20H over the entire length, and between the mounting plates 22 and the component 7', It is fixed with a fixing bolt 9 via a centering fine adjustment liner 8'. Further, the guide rail 20 is positioned so that the rear wheel 6 can run on the upper surface 20S of the horizontal side 20H. On the other hand, a chain guide 21 for guiding the step chain 3 is fixed to the upper part of the vertical side 20V of the guide rail 20. The chain guide 21 is made of a material with appropriate elasticity, such as a hard rubber material or a synthetic resin material, and is formed into a U-shaped cross section.
It is fitted onto the top of the V in an inverted U shape. Then, the screw 23 is passed through the hole H drilled in the vertical side 20V, and the tightening nut 24 is inserted together with the chain guide 21.
Tighten and secure. Further, the chain guide 21 has a width narrower than between the pair of left and right link plates 3', 3' of the step chain 3, and is in contact with the chain roller 3'' to share the weight of the step 1 and the load acting on the step. In addition, the chain guide 21 located on both sides of the step 1 secures a predetermined gap G with one of the pair of link plates 3', 3' (the side opposite to the step in the figure). The chain guide 21 itself or the vertical side 20V of the guide rail 20 is formed so as to prevent the step 1 from moving left and right and meandering.

With the above configuration, the step 1 driven by the step chain 3 slides on the chain guide 21 via the shaft 2 and the chain roller 3'' at the front,
The rear side is connected to the horizontal side 2 of the guide rail 20 via the rear wheel 6.
Moves by pivoting on 0H. As a result, the number of components of the step 1 can be reduced by omitting the front wheel.

Furthermore, the guide rail 20 is different from the conventional guide rail 5.
This eliminates the need for high-precision press work, allowing plate thicknesses from T6 to
Since 8mm L-beam steel is used, the shape is simple and installation is easy, and conventional problems can be solved not only in terms of cost but also in terms of process.

[Effect of idea]

As explained above, according to the present invention, the number of components of the step can be reduced, the shape can be simplified without adding any guide rails, and the installation can be simplified.

[Brief explanation of drawings]

Fig. 1 is a schematic side view showing the escalator, Fig. 2 is a sectional view showing the conventional step guide configuration along the line shown in Fig. 1, Fig. 3 is an enlarged sectional view of main parts showing the front wheels, and Fig. 4 is the main part of the escalator. A sectional view of the part corresponding to Figure 2 of the invention,
FIG. 5 is a view taken along the - arrow in FIG. 2... Axis, 3... Step chain, 3'... Link plate, 3''... Chain roller, 6... Rear wheel,
7... Frame body, 20... Guide rail, 20
H...Horizontal side, 20V...Vertical side, 21...Chain guide.

Claims (1)

[Scope of utility model registration request] In a passenger conveyor comprising a step chain that connects both sides of a plurality of steps in an endless manner, and a guide rail that guides the running of the steps, a shaft is protruded from both front sides of the steps and connected to the step chain; , a rear wheel is pivotally supported on both rear sides of the step;
The guide rail has an L-shaped cross section, and a chain guide for guiding the chain roller of the step chain and a pair of left and right link plates is provided at the upper part of the vertical side of the L-shaped cross section, and the horizontal side of the L-shaped cross section is provided at the upper part of the vertical side of the L-shaped cross section. A passenger conveyor characterized by a ring running path.