CN210029698U

CN210029698U - Step of escalator

Info

Publication number: CN210029698U
Application number: CN201920275256.1U
Authority: CN
Inventors: 高慧玲; 吴大将; 邵卫锋; 陈文燕
Original assignee: Hangzhou Xo Lift Co Ltd
Current assignee: Hangzhou Xo Lift Co Ltd
Priority date: 2019-03-05
Filing date: 2019-03-05
Publication date: 2020-02-07
Anticipated expiration: 2029-03-05

Abstract

The utility model provides a step of an escalator, which comprises a pedal for carrying passengers, a kickplate connected at the front lower part of the pedal and support frames connected at the two sides of the pedal and the kickplate, wherein the edge part of one side of the kickplate, which is far away from the pedal, is a thickened bent part; a plurality of first connecting reinforcing ribs are arranged between the pedal and the kickplate; one end of each first connecting reinforcing rib extends to be adjacent to the bending part, and the other end of each first connecting reinforcing rib extends to one end, far away from the kick plate, of the pedal. The step has a scientific and reasonable mechanical structure and excellent comprehensive mechanical property, and can meet the requirements of a heavy-load escalator.

Description

Step of escalator

Technical Field

The utility model relates to an automatic escalator technical field especially relates to an automatic escalator's step.

Background

With the development of society and the improvement of living standard of people, the escalator is generally applied to public places such as markets, airports, high-speed rails, subway stations and the like as a safe and effective uplink and downlink vehicle. The high-speed rail, subway and other occasions have the characteristics of large passenger flow volume, long peak passenger flow time and the like, and the heavy-duty escalator with higher performance requirements is usually installed in the occasions.

In order to effectively ensure various performance indexes of the heavy-duty escalator, the Chinese elevator society specially establishes technical specifications of the escalator for subways to restrict the performance indexes of all parts of the heavy-duty escalator.

The steps are one of the main parts of the escalator and directly bear and convey passengers, and the performance indexes of the steps directly influence the performance indexes of the escalator. Therefore, the technical specification of the escalator for the subway has more specific requirements for the steps used on the heavy-load escalator with more strict design requirements.

At present, light-weight steps are generally used in the industry, and the purposes of saving energy and reducing energy consumption are achieved while the safety regulations for installing GB16899 escalators and sidewalks are met, for example, a step structure disclosed in Chinese patent document with publication number CN107055295A and an energy-saving environment-friendly step disclosed in Chinese patent document with publication number CN 203173671U. However, the stair is mainly used in commercial occasions with low pedestrian volume, such as markets, airports and the like, and the stair is relatively light in weight, and various performances of the stair cannot meet the relevant requirements of technical specifications of escalators for subways.

Therefore, a high-performance step needs to be designed for occasions with large passenger flow and long peak passenger flow time, such as high-speed rails and subways, so as to meet the requirement of the heavy-duty escalator in the occasions.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automatic escalator's step, this step have scientific and reasonable's mechanical structure, good comprehensive mechanical properties, can satisfy heavy load type automatic escalator's requirement.

A stair of an escalator comprises a pedal for carrying passengers, a kickplate connected to the front lower part of the pedal and supporting frames connected to the two sides of the pedal and the kickplate,

the edge part of one side of the kick plate, which is far away from the pedal, is a thickened bent part;

a plurality of first connecting reinforcing ribs are arranged between the pedal and the kickplate; one end of each first connecting reinforcing rib extends to be adjacent to the bending part, and the other end of each first connecting reinforcing rib extends to one end, far away from the kick plate, of the pedal.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the thickness of the bending part is increased by 12% to 18%.

Optionally, the first connecting reinforcing ribs are three parallel reinforcing ribs, and the thickness of each first connecting reinforcing rib is 4-5.5 mm; in the width direction of the stair, the height of each first connecting reinforcing rib is reduced from the middle part of the stair to the support frames on the two sides of the stair in sequence.

Optionally, the thickness of the pedal is 2.5-3 mm; the thickness of the kickplate is 2.5-3 mm.

Optionally, a plurality of pedal reinforcing ribs are arranged on the back of the pedal, and two ends of each pedal reinforcing rib extend to the support frame; each pedal reinforcing rib inclines in the direction opposite to the kickplate.

Optionally, the thickness of the pedal reinforcing rib is 3-4.5 mm.

Optionally, the support frame comprises an integral structure:

the first convex wall is arranged on the back surface of the kickplate;

the second convex wall is arranged on the back surface of the pedal;

the reinforcing wall is connected to one end, far away from the first convex wall, of the second convex wall;

and the diagonal brace is connected between the first convex wall and the reinforcing wall and is used for mounting the main wheel and the auxiliary wheel of the step.

Optionally, the plurality of pedal reinforcing ribs include:

the two ends of the first pedal reinforcing rib are connected to the reinforcing wall, and the vertical height from the pedal is less than or equal to 93 mm;

the two ends of the second pedal reinforcing rib are connected to the second convex wall, and the vertical height from the pedal is less than or equal to 10 mm;

the two ends of the third pedal reinforcing rib are connected to the second convex wall, the third pedal reinforcing rib is positioned between the first pedal reinforcing rib and the second pedal reinforcing rib, and the vertical height from the pedal is less than or equal to 73 mm;

and the two ends of the fourth pedal reinforcing rib are connected to the reinforcing wall, the fourth pedal reinforcing rib is positioned on one side of the first pedal reinforcing rib, which is back to the third pedal reinforcing rib, and the vertical height from the pedal is less than or equal to 20 mm.

Optionally, the cross section of the diagonal brace is U-shaped; and a plurality of second reinforcing ribs are arranged in the U shape along the length direction of the inclined supporting rod.

Optionally, the overall weight of the step is less than or equal to 15.3 kg.

The utility model provides an automatic escalator's step, through the method of application ANSYS finite element simulation analysis, reasonable design step structure has improved the security performance of step greatly, provides safer guarantee for the big, the long occasion staircase of peak passenger flow time of passenger flow volume such as high-speed railway, subway.

Drawings

FIG. 1 is a schematic structural view of a prior art step;

FIG. 2 is a schematic structural view of a step in an embodiment of the present application;

FIG. 3 is an enlarged view taken at A in FIG. 1;

FIG. 4 is an enlarged view at B in FIG. 2;

FIG. 5 is a schematic structural view of a third tread stiffener shown in FIG. 2;

FIG. 6 is a schematic view of the first connecting reinforcing rib shown in FIG. 2;

FIG. 7 is a schematic view of the structure of a bend of a prior art step;

FIG. 8 is a schematic view of the thickened portion of FIG. 7;

fig. 9 is a schematic structural diagram of the step guide strip when the steps enter the comb teeth.

The reference numerals in the figures are illustrated as follows:

110. an initial pedal; 120. initial kicking plate; 121. an initial bend; 122. an initial engagement portion; 123. An initial equal thickness portion; 130. an initial support frame; 140. initial reinforcing ribs; 210. a pedal; 220. a kickplate; 221. a bending section; 230. a support frame; 231. a first convex wall; 232. a second convex wall; 233. a reinforcing wall; 234. a diagonal brace; 235. a secondary wheel shaft sleeve; 236. a secondary wheel rotating shaft; 240. a first connecting reinforcing rib; 241. A second side edge of the kickplate section; 242. a second side edge of the pedal section; 243. a second side edge of the splice section; 251. a first pedal stiffener; 252. a second pedal stiffener; 253. a third pedal reinforcing rib; 254. a fourth pedal reinforcing rib; 260. a second reinforcing rib; 270. hooking corners; 280. a strip-shaped boss; 300. a step guide strip; 400. and comb teeth.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Fig. 1 shows a prior art one-step structure. As shown in fig. 1 and 3, the existing step includes an initial step board 110 for carrying passengers, an initial kick board 120 connected to a front lower portion of the step board, and an initial support frame 130 connected to both sides of the initial step board 110 and the initial kick board 120. The initial kick plate 120 has an initial bending portion 121 at an edge portion of a side thereof away from the initial step plate 110, and the initial kick plate 120 further includes an initial engagement portion 122 and an initial equal thickness portion 123 connected in sequence in a direction away from the initial bending portion 121. Three initial reinforcing ribs 140 are provided between the initial tread plate 110 and the initial kick plate 120. One end of each initial reinforcing rib 140 extends to one end of the initial pedal 110 far away from the initial kick plate 120, and the other end extends to the initial equal-thickness part 123 of the initial kick plate 120; wherein, the initial reinforcing rib near the middle part of the step width direction extends along the extending distance of the initial kick plate 120 farthest, and the tail end thereof extends to the position on the initial equal thickness part 123 near the initial connecting part 122; the other two primary ribs extend only to the initial equal thickness portion 123 near the initial tread 110.

The initial reinforcing rib 140 in the existing step mainly plays a role in reinforcing the initial pedal 110, but does not significantly reinforce the initial kick plate 120, and fails to fully utilize the structural strength of the initial kick plate 120 to help the initial pedal 110 to resist deformation caused by heavy load, which is difficult to meet the strength requirement of technical specification of escalator for subway to the heavy-load type escalator step.

Fig. 2 shows a step of an escalator according to an embodiment of the present application, which is optimized in structure based on the step of fig. 1. As shown in fig. 2, a step of an escalator includes a step 210 for carrying passengers, a kick plate 220 connected to a front lower portion of the step 210, and a support bracket 230 connected to both sides of the step 210 and the kick plate 220. The edge of the side of the kick plate 220 away from the pedal 210 is a thickened bent portion 221. A plurality of first connecting reinforcing ribs 240 are arranged between the pedal 210 and the kickplate 220; one end of each first coupling bead 240 extends to be adjacent to the bent portion 221, and the other end extends to one end of the step plate 210 away from the kick plate 220.

The step of the escalator in the embodiment of the present application increases the extending distance of the first coupling bead 240 on the kick plate 220 by first extending the end of the first coupling bead 240 to be adjacent to the bent portion 221, so that the vertical stress from the step plate 210 can be directly transmitted to the bent portion 221 through the first coupling bead 240. The kick plate 220 is generally designed in an arc shape to be easily deformed by a pressing force from both straight edges in order to be engaged with the steps adjacent to the steps. The first connecting reinforcing rib 240 in the embodiment of the present application has a strong ability to resist the deformation caused by extrusion in the vertical direction, makes up for the deficiency of the kick plate 220, and can directly transmit the compressive stress to the bending portion 221 and transmit the compressive stress to the auxiliary wheel and the step guide rail of the step through the corresponding connecting structure.

Secondly, stress of the bent portion 221 is concentrated in the step, and the overall structural strength of the step is further improved by increasing the thickness of the bent portion 221, thereby improving safety of the step.

In addition, compared with GB16899 escalator and sidewalk installation safety standard, the technical specification of the escalator for the subway increases a distributed load test, and provides a new requirement for the structural strength of the steps. According to the embodiment of the application, the first connecting reinforcing ribs 240 at multiple positions are arranged between the pedal 210 and the kick plate 220, and the end parts of the first connecting reinforcing ribs 240 extend to the positions close to the bending parts 221, so that the stress distribution of the steps in the width direction is more uniform, and the requirements of technical specifications of escalators for subways are better met.

Step of the escalator in the embodiment of the application is in the same place footboard 210 and kickplate 220 more inseparable combination in mechanics, and full play kickplate 220 is to the supporting role of heavy load in the vertical direction, and structural design scientific and reasonable can satisfy the requirement of heavy-duty type escalator.

In one embodiment, as shown in fig. 2 and 6, the plate surface of the first connecting reinforcing rib 240 is perpendicular to the pedal 210 and the kick plate 220. The first coupling bead 240 includes a step section adjacent to the step 210, a kick section adjacent to the kick plate 220, and a joining section connected between the step section and the kick section. The edge of the first connecting reinforcing rib is surrounded by a first side edge and a second side edge, wherein the first side edge is the side edge attached to the step. Wherein, the second side 241 of the kick plate section and the second side 242 of the pedal section are both planes, and the second side 243 of the connecting section is arc-shaped. The second side edge 241 of the kick plate segment is not inclined towards the end of the tread plate 210 remote from the kick plate 220.

By this arrangement, the steps are prevented from permanent deformation at the joint section under dynamic loading.

Specifically, in one embodiment, as shown in fig. 2, the second side edge 241 of the kick plate segment is perpendicular to the tread 210.

Through the arrangement, the rigidity of the stair can be ensured, the material consumption can be reduced as much as possible, the weight of the stair is reduced, and the energy consumption is reduced.

In one embodiment, the thickness of the pedal is 2.5-3 mm; the thickness of the kickplate is 2.5-3 mm. The first connecting reinforcing ribs 240 are three parallel reinforcing ribs with the thickness of 4-5.5 mm; the height of each first coupling bead 240 is sequentially reduced from the middle of the step to the support frames 230 at both sides of the step in the width direction of the step. The thickness of the bending part is increased by 12 to 18 percent.

Specifically, as shown in fig. 2, the pedal 210 and the kick plate 220 are both provided with tooth grooves. The thickness of the tread 210 in this embodiment is a cross section perpendicular to the width direction of the steps in the tooth grooves of the tread 210, and the thickness of the tread 210 in the cross section is referred to as the thickness. The thickness of the kick plate 220 in this embodiment is a cross section perpendicular to the step width direction in the tooth groove of the kick plate 220, and the thickness of the kick plate 220 in the cross section is referred to as "thickness". By limiting the thickness of the tread 210 and the kick plate 220 to within 3mm, the total weight of the steps is not excessive, thereby limiting energy consumption.

As shown in fig. 2, the thickness of the first coupling bead 240 in the present embodiment is the thickness of the first coupling bead 240 in the step width direction. The thickness range of 4 mm-5.5 mm can reduce the weight of the stair as much as possible on the premise of ensuring the strength of the stair.

As shown in fig. 2, the height of the first connecting reinforcing rib 240 in this embodiment refers to the average distance from each point on the second side 242 of the pedal section to the pedal 210, or the average distance from each point on the second side 243 of the connecting section to the corner point between the pedal 210 and the kickplate 220. In this embodiment, the first coupling beads 240 extend uniformly on the kick plate 220. Under a vertical load, the central portion of the pedal 210 in the width direction has a relatively concentrated stress. In the present embodiment, the stress concentration can be reduced mainly by setting the height of the first coupling bead 240 located at the middle portion in the step width direction to be the largest, thereby effectively preventing the occurrence of permanent deformation.

Specifically, the increase in thickness of the bending portion 221 by 12% to 18% means that the thickness of the bending portion 221 is 12% to 18% greater than that of the kick plate 220, so as to compensate for the weakness of the bending portion itself and bear the stress transferred by the three first connecting reinforcing ribs 240.

In one embodiment, as shown in fig. 2, the supporting frame 230 comprises a first convex wall 231, a second convex wall 232, a reinforcing wall 233 and a diagonal brace 234 which are integrally formed. Wherein, the first protruding wall 231 is disposed on the back of the kick plate 220; the second convex wall 232 is arranged on the back of the pedal 210; the reinforcing wall 233 is connected to the second convex wall 232 at an end thereof remote from the first convex wall 231; a diagonal brace 234 is connected between the first convex wall 231 and the reinforcing wall 233 for mounting the main and auxiliary wheels of the step.

In one embodiment, as shown in fig. 2, a plurality of pedal reinforcing ribs are disposed on the back surface of the pedal, two ends of each pedal reinforcing rib extend to the supporting frame 230, each pedal reinforcing rib inclines away from the direction of the kick plate 220, and the thickness of each pedal reinforcing rib is 3-4.5 mm. The plurality of step stiffeners includes a first step stiffener 251, a second step stiffener 252, a third step stiffener 253, and a fourth step stiffener 254.

Both ends of the first step reinforcing rib 251 are connected to the reinforcing wall 233, and the vertical height from the step 210 is not more than 93 mm; the two ends of the second pedal reinforcing rib 252 are connected to the second convex wall 232, and the vertical height from the pedal 210 is less than or equal to 10 mm; the two ends of the third pedal reinforcing rib 253 are connected to the second convex wall 232, are positioned between the first pedal reinforcing rib 251 and the second pedal reinforcing rib 252, and have the vertical height from the pedal 210 less than or equal to 73 mm; the two ends of the fourth step stiffener 254 are connected to the reinforcing wall 233, and are located on the side of the first step stiffener 251 facing away from the third step stiffener 253, and the vertical height from the step 210 is less than or equal to 20 mm.

Two ends of each of the first connecting ribs extend to the supporting frame 230, one end of each of the first connecting ribs extends to the adjacent bending portion 221, and the other end extends to the end of the pedal 210 far away from the kick plate 220. Through this setting, three first connection reinforcing ribs and four footboard reinforcing ribs form criss-cross network structure on the footboard 210 to through being connected the both ends of each footboard reinforcing rib with the support frame, utilized the support frame and each first connection reinforcing rib to have the characteristics of great shear plane area in the step torsion test, reduced the distortion of footboard 210.

The direction of each pedal reinforcing rib back to the kickplate is inclined so as to adapt to the casting process and save the processing cost. The thickness that sets up the footboard strengthening rib is 3 ~ 4.5mm, can reduce the material and use under the condition of guaranteeing that footboard distortion satisfies the requirement. The first step reinforcement 251 can be heightened to firmly connect the step reinforcement and the reinforcing wall 233, so as to fully exert the torsion resistance of the support frame.

Further, in one embodiment, as shown in fig. 5, in the width direction of the step, the first pedal reinforcing rib 251 and the third pedal reinforcing rib 253 both adopt a wavy line-shaped structure with a high middle part, low two sides and a high joint with the support frame, so that the material is further saved and the manufacturing cost is reduced while the same stress effect is achieved.

In one embodiment, as shown in fig. 2, the cross section of the diagonal brace 234 is U-shaped; a plurality of second beads 260 are arranged in the U-shape along the length of the diagonal brace 234. This arrangement can save material and improve the bending strength of the diagonal brace 234.

In one embodiment, the overall weight of the step is less than or equal to 15.3 kg. On the premise of 15.3kg of total weight, various mechanical performance indexes of the cascade can meet requirements through the structural optimization.

In one embodiment, as shown in fig. 2, the first connecting reinforcing ribs 240 are parallel to each other, the pedal reinforcing ribs are parallel to each other, and the first connecting reinforcing ribs and the pedal reinforcing ribs are perpendicular to each other.

In one embodiment, as shown in FIG. 7, the curved portion of the step is circular, and the thickness of the kick plate is consistent along the tooth space. As shown in fig. 8, the curved portion is thickened in such a manner that the inner wall surface of the curved portion having a small radius of curvature is kept unchanged; the curvature radius of the outer wall surface with larger curvature radius of the bending part is increased, and the outer wall surface smoothly transits towards the pedal plate direction and the kickplate, so that the thickness of the bending part is increased, and the integral attractiveness of the stair is influenced.

Through ANSYS finite element analysis, the deflection of the step plate is less than or equal to 2.5mm, and the deflection of the pedal is less than or equal to 2mm, which is superior to the current step kickplate and the pedal deflection is less than or equal to 4 mm; all other indexes such as the indexes of permanent deformation less than or equal to 2mm when the maximum inclination angle (35 degrees) is supported under 500-3000N dynamic load are far higher than the indexes of the existing step, and the safety performance of the step is greatly improved.

In one embodiment, as shown in fig. 2, the step is made of high performance aluminum alloy, and both supporting frames of the step are provided with hook angles 270. Under the condition that the steps are lifted up by external force, compared with the single-side hook angle, the double-side hook angle can effectively prevent the steps from being lifted up, thereby ensuring the operation stability of the steps and the safety of passengers.

In one embodiment, the step 210 is further provided with a plurality of bar-shaped bosses 280 for contacting step guide bars of the escalator and guiding the steps, and each bar-shaped boss 280 has a trapezoidal section and extends in the width direction of the step; one end of each of the strip-shaped bosses 280 extends to the second protruding wall 232, and the other end extends to the side of the step 210.

The design can increase the contact area between the step and the step guide strip 300 under the condition of increasing less materials, ensure more accurate guide when the step passes through the comb teeth 400 and improve the safety of step operation.

In one embodiment, as shown in fig. 2, one end of the diagonal brace 234 is provided with a secondary axle sleeve 235 integrally formed with the step, and the secondary axle of the step is rotatably engaged with the secondary axle sleeve 235 through a secondary axle rotating shaft 236 of a step split structure. The pinion shaft 236 is made of cast iron.

Compared with the design of the integral cast aluminum auxiliary wheel rotating shaft, the auxiliary wheel rotating shaft 236 made of the split type cast iron material can improve the strength of the auxiliary wheel rotating shaft and reduce the fracture risk; in addition, the design of the auxiliary wheel rotating shaft 236 can be realized by designing the auxiliary wheel rotating shaft 236 with different sizes before casting the step, so that the auxiliary wheel shaft sleeve 235 with different sizes can be manufactured as required, the requirements of rollers with different steps are met, and the application is more flexible.

The utility model provides an automatic escalator's step, through the method of application ANSYS finite element simulation analysis, reasonable design step structure has improved the security performance of step greatly, for the high-speed railway, the big, the long occasion staircase of peak passenger flow time of passenger flow volume such as subway provides safer guarantee.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A stair of an escalator comprises a pedal for carrying passengers, a kickplate connected to the front lower part of the pedal and supporting frames connected to the two sides of the pedal and the kickplate,

2. The escalator step according to claim 1, wherein the thickness of the bend is increased by 12-18%.

3. The escalator step according to claim 1, wherein the first connecting reinforcement ribs are three side by side and have a thickness of 4mm to 5.5 mm; in the width direction of the stair, the height of each first connecting reinforcing rib is reduced from the middle part of the stair to the support frames on the two sides of the stair in sequence.

4. The escalator step according to claim 1, wherein the thickness of the step is 2.5-3 mm; the thickness of the kickplate is 2.5-3 mm.

5. The escalator step according to claim 1, wherein a plurality of step reinforcements are provided on the back surface of the step plate, and both ends of each step reinforcement extend to the support frame; each pedal reinforcing rib inclines in the direction opposite to the kickplate.

6. The escalator step according to claim 5, wherein the thickness of the tread reinforcing ribs is 3 to 4.5 mm.

7. The escalator step of claim 1, wherein the support frame comprises an integral structure:

the first convex wall is arranged on the back surface of the kickplate;

the second convex wall is arranged on the back surface of the pedal;

8. The escalator step of claim 7, wherein the plurality of tread reinforcing ribs comprise:

9. The escalator step of claim 7, wherein the cross-section of said diagonal brace is U-shaped; and a plurality of second reinforcing ribs are arranged in the U shape along the length direction of the inclined supporting rod.

10. The escalator step of claim 1, wherein the overall weight of the step is ≤ 15.3 kg.