CN114516581A - Pressure reducing rail assembly for escalator - Google Patents

Abstract

A pressure reducing rail assembly for an escalator comprising a pressure reducing rail and a pressure reducing rail support, said pressure reducing rail support having a running surface on which step chain bushings roll to unload step chain rollers, wherein said pressure reducing rail support comprises a plurality of pressure reducing rail support blocks interconnected to allow the pressure reducing rail support to accommodate pressure reducing rails having different radii while ensuring a smooth running surface for the step chain bushings.

Description

Pressure reducing rail assembly for escalator

Technical Field

The subject matter disclosed herein relates to an escalator or moving walkway, or the like. More particularly, the present invention relates to a pressure relief rail assembly specifically for use with an escalator or moving walkway system.

Background

For escalators or moving walkways of great heights, the pressure of the step chain rollers to the guide rails is concentrated in the upper and lower transition region, in particular in the upper transition region. The compressive stress on the step chain rollers is therefore particularly great in the region of the upper transition. In response to this problem, most companies on the market currently use a method of installing a pressure reducing rail to prevent the step chain rollers from pressing directly on the track, thereby avoiding premature damage to the step chain rollers and avoiding premature wear or component failure of the step chain roller track.

CN101717033B teaches an unloading rail structure for a heavy-duty escalator, which includes an unloading guide rail, a shock pad disposed below the unloading guide rail, a support rail disposed below the shock pad, side plates disposed at two sides of the support rail, a connecting block disposed below the side plates, and a head plate disposed at an end of the side plates, wherein the unloading guide rail, the shock pad, the support rail, the side plates, the connecting block, and the head plate form an integral frame type unloading rail structure; the unloading rail structure is arranged at the upper arc of the escalator and is inserted on the guide rail supporting plate of the escalator and arranged in parallel with the upper arc main rail; a step main wheel is arranged above the upper arc main rail, the step main wheel is fixed on the step main shaft, and the end part of the step main shaft is provided with a roller. The arrangement of the unloading rail structure ensures that when the step runs to the upper arc, the roller arranged on the step main shaft is firstly contacted with the unloading guide rail, so that the step main wheel is suspended above the upper arc main rail, the positive pressure on the step main wheel is greatly reduced, and the service life of the step main wheel is prolonged.

CN105129586A discloses an unloading guide rail device, which comprises a truss, a transmission shaft, a rail support and a positioning plate, wherein the lower end of the rail support is vertically and fixedly installed on the truss, the top end of the rail support is fixedly provided with a main wheel guide rail, the positioning plate is fixedly connected with the rail support, the inner side of the transmission shaft is symmetrically provided with main transmission wheels, the outer side of the transmission shaft is symmetrically provided with step chain wheels, when a step pedal of an escalator runs to a straight line section of the guide rail support, the main transmission wheels run on the main wheel guide rail, a curved section of the rail support is fixedly connected with a supporting plate, and the supporting plate is connected with the step chain guide rail through a connecting shaft; when the escalator step pedal runs to the curved section of the guide rail bracket, the step chain wheel runs on the step chain guide rail, and the main wheel guide rail is separated from the main wheel guide rail and runs in the air.

The prior art pressure relief rail assembly includes a complete pressure relief rail bracket. The complete pressure reducing rail bracket is mounted on the pressure reducing rail. Different escalators comprise several types of pressure reducing rails, which differ by their different radii. Thus, each of the current varieties of complete pressure relief rail brackets require specialized manufacturing to accommodate pressure relief rails of different radii.

However, prior art reduced pressure rail assemblies have exhibited substantial component stresses that result in premature wear or component failure. Component stresses occur when the complete pressure relief rail mount is molded straight in the longitudinal direction and then bent to match the pressure relief rail radius. The polymer fiber direction in the pressure relief rail support has been arranged by molding. Subsequent bending causes it to stretch to induce component stresses in the completed pressure relief rail bracket.

Disclosure of Invention

The object of the invention is to provide an improved pressure relief rail assembly, in which the wear of the pressure relief rail bracket and the component stresses thereof, in particular, are reduced compared to current solutions on the market, and in addition the damage can be easily replaced without replacing the complete pressure relief rail bracket.

The invention provides a pressure reducing rail assembly, which comprises a pressure reducing rail and a pressure reducing rail bracket, wherein the pressure reducing rail bracket comprises at least two pressure reducing rail bracket blocks. The decompression rail support has a running surface on which the metal sleeves of the step chain run.

The present invention thus solves the above-mentioned problems, namely by reducing component stresses and thus reducing the occurrence of premature wear or component failure by including shorter pressure relief rail bracket blocks. These decompression rail support blocks are merely molded without subsequent bending in the longitudinal direction, since the bending is formed and adjusted by the connecting joints of the decompression rail support blocks to one another. By shorter pressure relief rail bracket blocks is meant herein that the pressure relief rail bracket is divided into shorter blocks in the longitudinal direction. The longitudinal direction refers to the direction in which the respective step chain roller rolls on the running surface and in which the pressure-reducing rail carrier is stretched in the longitudinal direction. In addition to the longitudinal direction of the decompression rail support, this can also be referred to as the longitudinal extension of the decompression rail support. This does not exclude variants of the invention in which the pressure-reducing rail holder is also divided transversely. The pressure relief rail support block may have a variety of positions and geometries.

A preferred variant of the pressure relief rail bracket has two pressure relief rail bracket end sections and a plurality of pressure relief rail bracket middle sections. This means that, for the end portions, corresponding connectors on the front or rear portions of the decompression rail bracket block are missing in order to provide a smooth and even end for the decompression rail bracket.

Preferably, according to the invention, the material of the decompression rail support and the decompression rail and the step chain rollers is selected in such a way that normal wear occurs mainly on the decompression rail support. It is therefore advantageous if the decompression rail carrier blocks are attached to each other and to the decompression rail in such a way that they can be replaced quickly, for example in the event of wear. Preferred variants of the invention include: the pressure relief rail bracket blocks are removably attached to each other and to the pressure relief rail, preferably without damage. The decompression rail support block can thus be easily replaced.

In the context of the invention, it is particularly preferred if the decompression rail carrier blocks are fixed to one another by at least one latching or latching connection. Thus, in a preferred variant of the decompression rail bracket block, at least one latch or clamping element of the detent or latch connection is formed on the front side of the decompression rail bracket block and at least one corresponding detent or corresponding latch of the detent or latch connection is formed on the rear side of the decompression rail bracket block. Each of the end sections of the pressure relief rail brackets is missing a latch or corresponding latch on the front or rear side in order to ensure a smooth end section. Alternatively or additionally, it can also be provided that the decompression rail carrier blocks are fixed to one another by at least one clamping connection. At least one clamping part of the clamping connection is formed on the front side of the decompression rail support block, and at least one counter-clamping part of the clamping connection is formed on the rear side of the decompression rail support block. Both variants are based on a spring-action force. However, in the case of a latching or latching connection, a form-determining fit is produced between the latching or latching element and the counter-latching or counter-latching element in the connected state, whereas in the case of a clamping connection, the clamping element and the counter-clamping element engage one another only with a force-determining fit.

According to the present invention, a preferred variant of the decompression rail bracket block has first and second clip portions on the front side of the decompression rail bracket block. The clip parts each have a recess into which an end section of the pin arrangement of the rear side of the decompression rail carrier block projects. The rear side of the decompression rail support block is shaped as the two pin ends, which have a rotational axis about which the decompression rail support block can be slightly rotated in order to be adjusted corresponding to the radius of the decompression rail. In other words, the relief rail bracket block may thus form a relief rail bracket that is adapted to the radius of the relief rail. For the interconnection, the decompression rail support blocks can be inserted in the insertion direction perpendicular to the axis of rotation of the pin arrangement on the rear side of the decompression rail support block in the corresponding insertion channel on the front side of the other decompression rail support block. The rear side of a reduced pressure rail bracket block may thus snap together with the front side of another reduced pressure rail bracket block.

The reduced pressure rail carrier block comprises a polymer, particularly a thermoplastic. It may be, for example, Polyamide (PA) or Polyoxymethylene (POM).

In principle, a smooth running surface can be achieved according to the invention by connecting the decompression rail carrier blocks together

However, a preferred variant of the invention provides that, for further improvement in this respect, the decompression rail mount has at least two different decompression rail blocks. The first decompression rail block thus preferably ensures a connection between all first decompression rail carrier blocks. Thus, it provides adaptability of the pressure relief rail bracket to the radius of the pressure relief rail and includes a middle section as well as end sections of the pressure relief rail bracket. The first or connecting part in a preferred variant also comprises an adapted geometry for the second decompression rail support block for sliding in or holding. It is nevertheless also possible that the second pressure relief rail block comprises a geometry for retaining to the first pressure relief rail support block. The second decompression rail support block is designed to form a running surface for the connection over the entire decompression rail support. The second pressure relief rail block is therefore the main wear part or replaceable part of the pressure relief rail mount.

The first pressure relief rail bracket block comprises a polymer, in particular a thermoplastic. It may be, for example, Polyamide (PA) or Polyoxymethylene (POM). A preferred form of the second pressure reducing rail support block comprises a tribologically enhanced polymer, particularly a thermoplastic. It may be, for example, Polyamide (PA) or Polyoxymethylene (POM) with a tribologically enhanced composition such as Polytetrafluoroethylene (PTFE) for improved wear resistance, for example, to reduce the static and sliding friction coefficients below 0.5.

Drawings

In order to clarify the technical solutions in the embodiments of the present invention more clearly, the drawings required for the description of the embodiments are briefly presented below. It is to be understood that the drawings are designed solely for the purposes of illustrating certain features of the invention and are not intended to be limiting. Embodiments may be used by those skilled in the art to derive other figures based on these figures without any inventive effort.

FIG. 1 illustrates a front view of one embodiment of a pressure relief rail assembly;

FIG. 2 illustrates a cross-sectional view of one embodiment of a pressure relief rail assembly;

FIG. 3 illustrates a view of one embodiment of a decompression rail bracket block;

FIG. 4 illustrates a plan view of one embodiment of a pressure relief rail support block;

FIG. 5 shows a view of an end section of a pressure relief rail carrier block;

FIG. 6 shows a view of another form of an end section of a decompression rail bracket block; and

figure 7 illustrates a view of another embodiment of a pressure relief rail bracket block.

The parts in the drawings are numbered as follows:

1. pressure reducing rail assembly

2. Pressure reducing rail

3. Pressure reducing rail support

4. Pressure reducing rail support surface

5. Decompression rail support block

6. Radius of

7. Step chain roller

8. Step chain

9. Front end

10. Back end

11. Concave part

12a. pin portion

12b. axis of rotation of pin

13. Insertion channel

14. Direction of insertion

15. Longitudinal direction

Middle section of first decompression rail support

End section of a first decompression rail support

16c. the other end section of the first decompression rail support

17. Second decompression rail support block

18. Geometry for accommodating a second decompression rail bracket block

The detailed description explains embodiments of the invention, together with advantages and features, by way of example with reference to the drawings.

Detailed Description

In the front view of fig. 1, a pressure relief rail assembly 1 is shown, which comprises a pressure relief rail 2 with a radius 6, the entire pressure relief rail bracket 3 being fitted on the pressure relief rail 2. Since there are a wide variety of decompression rails 2 with different radii 6, the decompression rail holder 3 needs to be adapted to these radii 6. To ensure this, the illustrated embodiment of the decompression rail bracket comprises a plurality of decompression rail bracket blocks 5 in the longitudinal direction 15 of the decompression rail bracket 3. The step chain 8 moves in the longitudinal direction 15 on the decompression rail bracket 3.

In fig. 2, a sectional view of the pressure relief rail assembly 1 is shown, the pressure relief rail assembly 1 comprising a metal sleeve 7, the metal sleeve 7 rolling on the pressure relief rail support surface 4 of the pressure relief rail support 3. The decompression rail bracket 3 is fitted on the decompression rail 2.

Fig. 3 shows a middle section 16a of the first decompression rail bracket block, which has a front end 9, the front end 9 comprising a recess 11 and an insertion channel 13 perpendicular to the axis of the inserted pin 12b. As described above, the insertion passage 13 is provided on the upper front corner of each lateral side of the holder block 16a, with one end opened for the insertion of the pin 12a to slide in and the other end closed by the main body of the holder member 16a. The recess 11 is arranged at the closed end of the insertion channel 13 and has a depth greater than the depth of the insertion channel 13.

The same first decompression rail block intermediate section 16a is visible in plan view in fig. 4, but has, in addition to the front end 9 with the recess 11, a rear section 10, the rear section 10 having a pin section 12a comprising a pin section rotation axis 12b. The pin portion 12a on the rear side 10 can be inserted in the insertion direction 14 into the recess 11 of the other decompression rail-mounting block via the insertion channel 13. Thus, the decompression rail support blocks can rotate slightly relative to each other about the axis of rotation of the pin 12b. This allows the pressure relief rail holder 3 to be adapted to the radius 6 of the pressure relief rail 2.

The first end section 16c of the first decompression rail mounting block is shown in fig. 5. It has a rear end 10 with a pinned portion 12a of the pressure reducing rail bracket block middle section 16a, but the front end 9 is not shown, so as to terminate the pressure reducing rail bracket 3 at that end.

The second end section 16d of the first decompression rail mounting block is shown in fig. 6. It has a front end 9 with a recess 11 of the decompression rail bracket piece middle section 16a, but the rear end 10 is not shown, in order to end the decompression rail bracket 3 on the other end.

In contrast to the middle section 16b shown in fig. 3, the first end section 16c and the second end section 16d shown in fig. 5 and 6 have a receiving geometry 18. The receiving geometry 18 is optional. In a preferred embodiment of the present invention, none of the first decompression rail bracket block middle section 16b, the first end section 16c and the second end section 16d have a receiving geometry 18. The upper surfaces of all three pieces make up the running surface of the pressure reducing rail bracket. In another preferred embodiment, the first pressure relief rail bracket block middle section 16b, the first end section 16c, and the second end section 16d all have receiving geometries 18 for receiving the second pressure relief rail bracket block 17.

Fig. 7 shows an embodiment in which the first decompression rail carrier block 16 accommodates the second decompression rail carrier block 17. Although the first decompression rail bracket block 16 is shown as an intermediate segment 16b, those skilled in the art will appreciate that: the first and second end sections 16c and 16d may also receive a second relief rail bracket block 17 in the same manner. The second decompression rail support block 17 is preferably designed as a long, flat and smooth plate, which is accommodated in, for example, two inward flanges of the receiving geometry 18 (see fig. 5). Thus, in this embodiment, the second pressure reducing rail bracket block 17 constitutes a running surface of the pressure reducing rail bracket.

It will be appreciated by those skilled in the art that changes could be made to the embodiments described above without departing from the broad inventive concept thereof. It is understood, therefore, that this invention is not limited to the particular embodiments disclosed, but it is intended to cover modifications within the spirit and scope of the present invention as defined by the appended claims. Moreover, even though the spirit and scope of the invention is to be read in light of the specific embodiments disclosed, it is not to be read by employing donation principles unless the applicant has expressly and specifically acknowledged such.

Claims (12)

1. A pressure reducing rail assembly for an escalator comprising a pressure reducing rail and a pressure reducing rail support, said pressure reducing rail support having a running surface on which sleeves of a step chain roll to unload step chain rollers, wherein said pressure reducing rail support comprises a plurality of pressure reducing rail support blocks interconnected to allow the pressure reducing rail support to accommodate pressure reducing rails having different radii while ensuring a smooth running surface for the step chain sleeves;

the pressure reducing rail support block includes a first end section, a second end section, and a plurality of intermediate sections;

the middle section of each pressure reducing rail bracket block comprises a front end and a rear end, wherein the front end is provided with at least one joint part, the rear end is provided with at least one corresponding joint part, and the corresponding end part of the corresponding joint part of the rear end of one pressure reducing rail bracket block extends into the joint part of the front end of the other pressure reducing rail bracket block, so that the pressure reducing rail bracket blocks are buckled with each other;

the first end section includes a rear end identical to the rear end of the intermediate section but without a front end such that the pressure reduction rail bracket terminates on one side, and the second end section includes a front end identical to the front end of the intermediate section but without a rear end such that the pressure reduction rail bracket terminates on the other side.

2. The pressure relief rail assembly of claim 1, wherein each pressure relief rail bracket block is detachably secured to each other.

3. The pressure relief rail assembly of claim 1, wherein each pressure relief rail bracket block is detachably secured to each other in an unbroken fashion.

4. The pressure relief rail assembly of any of claims 1-3, wherein the joint is a latch and the corresponding joint is a corresponding latch, or wherein the joint is a clamp and the corresponding joint is a corresponding clamp.

5. The pressure relief rail assembly of any of claims 1-3, wherein the front end comprises a recess and the rear end comprises a pin, and the pin of the rear end of a pressure relief rail bracket block is inserted into a corresponding recess of the front end of another pressure relief rail bracket block along an insertion path perpendicular to the axis of rotation of the pin.

6. The pressure relief rail assembly of any of claims 1-3, wherein the pressure relief rail bracket comprises plastic.

7. The pressure relief rail assembly of any of claims 1-3, wherein the pressure relief rail bracket comprises a thermoplastic.

8. The pressure relief rail assembly of one of claims 1-3, wherein said pressure relief rail bracket comprises Polyurethane (PA) or Polyoxymethylene (POM).

9. The pressure relief rail assembly of claim 5, wherein a depth of the depression is deeper than a depth of the insertion path.

10. The pressure relief rail assembly of claim 1, wherein the step chain sleeve rolls on the running surface, also unloading step chain accessory rollers.

11. The pressure relief rail assembly of claim 1, wherein the step chain sleeve is a metal sleeve.

12. A pressure reducing rail assembly for an escalator comprising a pressure reducing rail and a pressure reducing rail support having a running surface on which sleeves of a step chain roll to unload step chain rollers, wherein the pressure reducing rail support comprises a plurality of pressure reducing rail support blocks interconnected to allow the pressure reducing rail support to accommodate pressure reducing rails having different radii while ensuring a smooth running surface for the step chain sleeves.

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