Step main wheel limiting structure of heavy-load public transport type escalator

Abstract

The invention discloses a heavy-load public transport type escalator step main wheel limiting structure which comprises integrated side plates which are oppositely arranged in parallel, guide rails are arranged at the tops of the integrated side plates, a plurality of escalator steps are arranged between the two integrated side plates, step main wheels are arranged at the two ends of each escalator step, and the step main wheels are connected with the guide rails. The bottoms of the step main wheels make contact with the guide rails, traction chains hinged to the step main wheels are arranged on the outer sides of the integrated side plates and drive the step main wheels to roll along the guide rails, limiting rails are arranged above the step main wheels, and connecting plates are welded between the guide rails and the limiting rails. Reinforcing plates are welded to the outer sides of the connecting plates. The stair main wheel limiting structure of the heavy-load public transportation type escalator has the advantages that the stair jumping of the escalator is limited, the escalator can safely pass through the comb teeth of the upper horizontal section and the lower horizontal section in the long-term high-strength operation process, the structure is simple, the processing and the installation are convenient, the material is simple, the cost is low, and the stair operation safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of escalators, in particular to a step main wheel limiting structure of a heavy-load public transportation type escalator. Background Art

[0002] The step main wheels are important load-bearing and moving parts in escalators. Each step has two main wheels, which are responsible for running along the guide rails and driving the steps to move, while the secondary wheels are fixed on the steps. All the steps run on the guide rails arranged according to a certain pattern. The steps on the upper branch of the escalator remain horizontal, while the steps on the lower branch can be upside down, realizing the circular motion of the escalator. During the long-term and high-intensity operation of heavy-load public transportation escalators, the step main wheels will continuously squeeze the surrounding structure, causing it to deform, making the gap at the top of the step main wheels larger, and in certain cases, the step jump amplitude becomes larger, posing a safety hazard of hitting the comb teeth. Summary of the invention

[0003] In view of the above-mentioned technical problems, the purpose of the present invention is to provide a main wheel limit structure for heavy-loaded public transportation escalator steps, so as to reduce the amplitude of step jumping and improve the safety of step operation.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A heavy-load public transportation escalator step main wheel limiting structure comprises integrated side panels arranged in parallel and opposite to each other, guide rails are arranged on the top of the integrated side panels, a plurality of escalator steps are arranged between the two integrated side panels, step main wheels are arranged at both ends of the escalator steps, the bottoms of the step main wheels are in contact with the guide rails, traction chains hinged to the step main wheels are arranged on the outer sides of the integrated side panels, the traction chains drive the step main wheels to roll along the guide rails, a limiting rail is arranged above the step main wheels, a connecting plate is welded between the guide rails and the limiting rails, and a reinforcing plate is welded on the outer sides of the connecting plates.

[0006] Preferably, the minimum distance between the limiting rail and the step main wheel is ≤1 mm.

[0007] Preferably, the connecting plate is a C-shaped piece, the welding point of the reinforcing plate matches the shape of the connecting plate, and the traction chain is located on the inner side of the connecting plate.

[0008] Preferably, a support plate perpendicular to the guide rail is provided at the end of the limit rail, a plurality of comb teeth are evenly spaced on the support plate, and a gap between the comb teeth and the escalator steps is 2-3 mm.

[0009] Preferably, the limiting rail is flat steel.

[0010] Preferably, the guide rail comprises a bottom plate and side edges perpendicular to the bottom plate, and the side edges are located outside the step main wheels.

[0011] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0012] The heavy-duty public transportation type escalator step main wheel limiting structure of the present invention comprises an integrated side panel arranged in parallel and opposite to each other, a guide rail is arranged on the top of the integrated side panel, a plurality of escalator steps are arranged between the two integrated side panels, step main wheels are arranged at both ends of the escalator steps, the bottom of the step main wheels contacts the guide rail, a traction chain hinged to the step main wheels is arranged on the outer side of the integrated side panel, the traction chain drives the step main wheels to roll along the guide rail, a limiting rail is arranged above the step main wheels, a connecting plate is welded between the guide rail and the limiting rail, a reinforcing plate is welded on the outer side of the connecting plate, and the rigidity of the structure itself is improved by welding the various parts into one body, and the rigidity of the step main wheel limiting structure of the heavy-duty public transportation type escalator is further guaranteed by using the reinforcing plate during operation, the escalator steps are limited in jumping up and can pass safely at the comb teeth of the upper and lower horizontal sections during long-term high-intensity operation, the structure is simple, the processing and installation are convenient, the materials are simple, the cost is low, and the safety of step operation is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The technical solution of the present invention is further described below in conjunction with the accompanying drawings:

[0014] Attached Figure 1 It is a three-dimensional diagram of the main wheel limit structure of the heavy-load public transportation escalator of the present invention;

[0015] Attached Figure 2 It is a schematic diagram of the main wheel limit structure of the heavy-load public transportation escalator step of the present invention;

[0016] Attached Figure 3 For attachment Figure 2 AA section view;

[0017] Attached Figure 4 For attachment Figure 3 A partial enlarged view of point B;

[0018] Attached Figure 5 It is a schematic diagram of the main wheel limit structure of the heavy-load public transportation escalator step of the present invention.

[0019] Among them: 1. integrated side panel; 2. guide rail; 21. bottom plate; 22. side; 3. escalator steps; 4. step main wheel; 5. traction chain; 6. limit rail; 7. connecting plate; 8. reinforcement plate; 9. support plate; 10. comb teeth. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] As attached Figure 1 , Attachment Figure 2 The figure shows the step main wheel limiting structure of the heavy-duty public transportation escalator of the present invention, which includes an integrated side panel 1 installed in parallel and opposite to each other, a guide rail 2 is welded on the top of the integrated side panel 1, a plurality of escalator steps 3 are installed between the two integrated side panels 1, step main wheels 4 are installed at both ends of the escalator steps 3, the bottom of the step main wheels 4 is in contact with the guide rail 2, and a traction chain 5 hinged to the step main wheel 4 is installed on the outer side of the integrated side panel 1, and the traction chain 5 drives the step main wheel 4 to roll along the guide rail 2. A limiting rail 6 is installed above the step main wheel 4, a connecting plate 7 is welded between the guide rail 2 and the limiting rail 6, and a reinforcing plate 8 is welded on the outer side of the connecting plate 7. The connecting plate 7 is a C-shaped part, and the welding part of the reinforcing plate 8 matches the outer shape of the connecting plate 7 to ensure the rigidity of the connecting plate 7. The traction chain 5 is located on the inner side of the connecting plate 7 and is adapted to the shape of the connecting plate 7.

[0023] The minimum distance between the limit rail 6 and the step main wheel 4 is ≤1mm to prevent the escalator step 3 from jumping significantly. Figure 5 As shown, a support plate 9 perpendicular to the guide rail 2 is installed at the end of the limit rail 6, and a plurality of comb teeth 10 are evenly spaced and connected to the support plate 9. The gap between the comb teeth 10 and the escalator step 3 is 2-3mm, so that the escalator step 3 has a safe passing space.

[0024] The limit rail 6 is a flat steel. Figure 4 As shown, the guide rail 2 includes a bottom plate 21 and a side edge 22 perpendicular to the bottom plate 21 , and the side edge 22 is located outside the step main wheel 4 , so that the step main wheel 4 can move within a limited range to avoid derailment.

[0025] The main wheel limiting structure of the heavy-duty public transportation escalator step 3 of the present invention strengthens the structural rigidity design and is welded to the guide rail 2 as a whole through the connecting plate 7, thereby improving the stability of the limiting structure. The guide rail 2 is welded to the integrated side plate 1 as a whole, and the latter is reliably connected to the truss of the escalator. The limiting rail 6 is welded to the guide rail 2 as a whole through the three connecting plates 7, and is reliably fixed, so that the gap between the guide rail 2 and the limiting rail 6 of the step main wheel 4 is effectively controlled, so that the step main wheel 4 together with the escalator step 3 will not jump up more than 1mm in the horizontal working section, avoiding the possibility of collision with the comb teeth 10 on the support plate 9, and eliminating the potential safety hazards in the later operation process. When the escalator step 3 passes through the comb teeth 10, under normal circumstances, there is a gap of 2 to 3m between the upper surface of the escalator step 3 and the comb teeth 10, and there is sufficient passing space, which improves the safety of the step operation.

[0026] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heavy-load public transportation escalator step main wheel limiting structure, characterized by: It includes integrated side panels arranged in parallel and opposite to each other, a guide rail is arranged on the top of the integrated side panels, a plurality of escalator steps are arranged between the two integrated side panels, step main wheels are arranged at both ends of the escalator steps, the bottom of the step main wheels is in contact with the guide rail, a traction chain hinged to the step main wheels is arranged on the outer side of the integrated side panels, the traction chain drives the step main wheels to roll along the guide rail, a limiting rail is arranged above the step main wheels, a connecting plate is welded between the guide rail and the limiting rail, and a reinforcing plate is welded on the outer side of the connecting plate.

2. The heavy-load public transportation escalator step main wheel limiting structure according to claim 1 is characterized in that: The minimum distance between the limit rail and the step main wheel is ≤1mm.

3. The heavy-load public transportation type escalator step main wheel limiting structure according to claim 1 is characterized in that: The connecting plate is a C-shaped part, the welding part of the reinforcing plate is matched with the shape of the connecting plate, and the traction chain is located on the inner side of the connecting plate.

4. The heavy-load public transportation type escalator step main wheel limiting structure according to claim 1 is characterized in that: A support plate perpendicular to the guide rail is arranged at the end of the limit rail, and a plurality of comb teeth are evenly spaced on the support plate, and the gap between the comb teeth and the escalator steps is 2-3 mm.

5. The heavy-load public transportation type escalator step main wheel limiting structure according to claim 1 is characterized in that: The limiting rail is flat steel.

6. The heavy-load public transportation type escalator step main wheel limiting structure according to claim 1 is characterized in that: The guide rail comprises a bottom plate and side edges perpendicular to the bottom plate, and the side edges are located outside the step main wheels.

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