Assembled stair main framework

Abstract

The utility model discloses an assembly type stair main framework which comprises a fixing plate, a 7-shaped plate, a radian plate, an S-shaped plate and two triangular supports which are oppositely arranged in parallel, each triangular support comprises a bottom plate and an outer side wall perpendicular to the edge of the bottom plate, each triangular support comprises a first end, a second end and a third end which are located at the triangular position, and a main shaft seat is arranged at the first end. The spindle seat comprises a first connecting plate and first side plates, and the two ends of the fixing plate are in bolted connection with the first side plates respectively; the 7-shaped plate is connected with the second end of the triangular bracket and comprises a second connecting plate and a third connecting plate; a tip extending outwards is arranged at the third end of the bottom plate, an auxiliary wheel seat is arranged at the tip and comprises a fourth connecting plate and a second side plate, and the two ends of the S-shaped plate are connected with the second side plate through bolts; and the radian plate is welded with the 7-shaped plate and the S plate. The stair has the integral advantage and the split advantage, a certain part can be independently replaced, the whole stair does not need to be replaced, various performance requirements are met, and cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of escalator step technology, and in particular to an assembled step main frame. Background Technology

[0002] Escalator steps are the components that circulate on an escalator and provide standing space for passengers. The main wheel axle of the step is interlocked with the step chain, allowing the step to remain horizontal on the upper branch and rotate on the lower branch. Common escalator steps are made of a single piece, die-cast. When part of the escalator step is damaged and cannot be used normally, the entire step needs to be replaced, which is costly and wasteful of resources. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to provide an assembled ladder main frame that is easy to disassemble, convenient to maintain, and has a high reusability.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An assembled ladder frame includes a fixed plate, a V-shaped plate, an arc plate, an S-shaped plate, and two parallel triangular supports. Each triangular support includes a base plate and an outer wall perpendicular to the edge of the base plate. The triangular support includes a first end, a second end, and a third end located at the triangular section. A main shaft seat is located at the first end. The main shaft seat includes a first connecting plate bolted to the base plate and a first side plate perpendicular to the first connecting plate. Both ends of the fixed plate are bolted to the first side plate. Both ends of the V-shaped plate are connected to the second end of the triangular support. The V-shaped plate includes a second connecting plate bolted to the outer wall of the triangular support and a third connecting plate at an angle to the second connecting plate. The base plate has an outwardly extending tip at the third end. A secondary wheel seat is located at the tip. The secondary wheel seat includes a fourth connecting plate bolted to the tip and a second side plate perpendicular to the fourth connecting plate. Both ends of the S-shaped plate are bolted to the second side plate. The arc plate is welded to the V-shaped plate and the S-shaped plate at both ends along the arc direction.

[0006] Preferably, the spindle seat is provided with a protective block that is perpendicular to the first connecting plate and extends outward.

[0007] Preferably, the S-plate includes a middle plate and a first support plate and a second support plate located at both ends of the middle plate and folded in opposite directions. The first support plate is bolted to the second side plate of the auxiliary wheel seat, the middle plate and the arc plate are welded together, and the end of the second support plate abuts against the side plate.

[0008] Preferably, the outer sidewall forms an arc-shaped turning surface at the second end, the third connecting plate abuts against the turning surface, and the arc plate is welded to the third connecting plate.

[0009] Preferably, the base plate is provided with a first notch near the first end and a second notch near the second and third ends, and the edges of the first and second notches are provided with inner sidewalls.

[0010] Preferably, the base plate is provided with reinforcing ribs, which are located outside the first notch and the second notch.

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

[0012] This utility model's assembled ladder frame includes a triangular bracket, a V-shaped plate, an arc plate, an S-plate, a secondary wheel seat, a fixing plate, a protective block, and a main shaft seat. The two ends of the fixing plate are connected to the two triangular brackets respectively. The two ends of the arc plate along the arc direction are welded to the V-shaped plate and the S-plate respectively. The arc plate, V-shaped plate, and S-plate are welded into a whole and detachably connected to the triangular brackets. The rigid connections of all parts offer both the advantages of an integrated design and the advantages of separate components. When the ladder product is damaged or cannot be used normally, a single part can be replaced without replacing the entire ladder, saving costs and resources. When there are special performance requirements, a specific part can be improved to achieve functions that cannot be achieved with a fully die-cast ladder, making it more flexible and versatile. Attached Figure Description

[0013] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0014] Appendix Figure 1 This is a perspective view of the assembled ladder main frame of this utility model;

[0015] Appendix Figure 2 This is a side view of the assembled ladder main frame of this utility model;

[0016] Appendix Figure 3 This is a perspective view of the assembled ladder main frame of this utility model;

[0017] Appendix Figure 4 This is a rear view of the assembled ladder main frame of this utility model.

[0018] The components are as follows: 1. Fixed plate; 2. Seven-shaped plate; 21. Second connecting plate; 22. Third connecting plate; 3. Curved plate; 4. S-plate; 41. Middle plate; 42. First support plate; 43. Second support plate; 5. Triangular bracket; 51. Base plate; 511. Tip; 512. First notch; 513. Second notch; 52. Outer side wall; 53. Inner side wall; 54. Reinforcing rib; 6. Main shaft seat; 61. First connecting plate; 62. First side plate; 7. Secondary wheel seat; 71. Fourth connecting plate; 72. Second side plate; 8. Protective block. Detailed Implementation

[0019] The preferred embodiments of the present invention will now be described in detail with reference to 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 scope of protection of the present invention.

[0020] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] As attached Figure 1-4 The diagram shows the assembled ladder main frame of this utility model, including a fixing plate 1, a figure-eight plate 2, an arc plate 3, an S-plate 4, and two parallel and opposite triangular supports 5. Each triangular support 5 includes a base plate 51 and an outer wall 52 perpendicular to the edge of the base plate 51, improving the strength of the triangular support 5. Each triangular support 5 includes a first end, a second end, and a third end located at the triangular section. A spindle seat 6 is installed at the first end. The spindle seat 6 includes a first connecting plate 61 bolted to the base plate 51 and a first side plate 62 perpendicular to the first connecting plate 61. Both ends of the fixing plate 1 are bolted to the first side plate 62, connecting the two triangular supports 5 into a single unit.

[0022] The two ends of the septum plate 2 are respectively connected to the second end of the triangular bracket 5. The septum plate 2 includes a second connecting plate 21 bolted to the outer wall 52 of the triangular bracket 5 and a third connecting plate 22 at an angle to the second connecting plate 21. The base plate 51 has an outwardly extending tip 511 at the third end. A secondary wheel seat 7 is installed at the tip 511. The secondary wheel seat 7 includes a fourth connecting plate 71 bolted to the tip 511 and a second side plate 72 perpendicular to the fourth connecting plate 71. The two ends of the S plate 4 are respectively bolted to the second side plate 72. The two ends of the arc plate 3 along the arc direction are respectively welded to the septum plate 2 and the S plate 4. The arc plate 3, the septum plate 2, and the S plate 4 are welded into a whole and detachably connected to the triangular bracket 5.

[0023] S-plate 4 includes a middle plate 41 and a first support plate 42 and a second support plate 43 located at both ends of the middle plate 41 and folded in opposite directions. The first support plate 42 is bolted to the second side plate 72 of the auxiliary wheel seat 7. The middle plate 41 and the arc plate 3 are welded together. The end of the second support plate 43 abuts against the side plate, making the positioning of S-plate 4 faster and the connection more stable during installation. The outer side wall 52 forms an arc-shaped turning surface at the second end. The third connecting plate 22 abuts against the turning surface, making the installation more reliable. The arc plate 3 is welded to the third connecting plate 22, so that the connections at each point support each other, improve the overall strength, and reduce the degree of deformation.

[0024] The main shaft seat 6 is connected to a protective block 8 that is perpendicular to the first connecting plate 61 and extends outward. The protective block 8 is made of plastic and the distance between the left and right protective blocks 8 can be determined as needed. Its function is to prevent the steps from directly rubbing against the escalator side plate or getting stuck when the steps move during operation, thus avoiding operation accidents.

[0025] The base plate 51 has a first notch 512 near the first end and a second notch 513 near the second and third ends. The edges of the first notch 512 and the second notch 513 form vertical inner sidewalls 53. A reinforcing rib 54 is formed on the base plate 51. The reinforcing rib 54 is located outside the first notch 512 and the second notch 513, further improving the strength of the triangular bracket 5.

[0026] This utility model's assembled ladder frame is a whole rigidly connected by various parts. It has the advantages of being a whole, with each part interacting to meet the national standards for the static load, dynamic load, and torsional performance of the ladder. It also has the advantages of being a separate unit, allowing for flexible design improvements to specific parts to meet various performance requirements, making it more versatile—a feature that integral die-cast ladders cannot achieve. When the ladder product is damaged or cannot be used normally, a single part can be replaced without replacing the entire ladder, saving costs and avoiding resource waste.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An assembled ladder-type main frame, characterized in that: The system includes a fixed plate, a L-shaped plate, an arc plate, an S-shaped plate, and two parallel triangular supports. Each triangular support includes a base plate and an outer wall perpendicular to the edge of the base plate. The triangular support has a first end, a second end, and a third end located at the triangular point. A spindle seat is located at the first end. The spindle seat includes a first connecting plate bolted to the base plate and a first side plate perpendicular to the first connecting plate. Both ends of the fixed plate are bolted to the first side plate. Both ends of the L-shaped plate are connected to the second end of the triangular support. The L-shaped plate includes a second connecting plate bolted to the outer wall of the triangular support and a third connecting plate at an angle to the second connecting plate. The base plate has an outwardly extending tip at the third end. A secondary wheel seat is located at the tip. The secondary wheel seat includes a fourth connecting plate bolted to the tip and a second side plate perpendicular to the fourth connecting plate. Both ends of the S-shaped plate are bolted to the second side plate. The arc plate is welded to the L-shaped plate and the S-shaped plate at both ends along the arc direction.

2. The assembled ladder-type main frame according to claim 1, characterized in that: The spindle seat is provided with a protective block that is perpendicular to the first connecting plate and extends outward.

3. The assembled ladder-type main frame according to claim 1, characterized in that: The S-plate includes a middle plate and a first support plate and a second support plate located at both ends of the middle plate and folded in opposite directions. The first support plate is bolted to the second side plate of the auxiliary wheel seat. The middle plate and the arc plate are welded together. The end of the second support plate abuts against the side plate.

4. The assembled ladder-type main frame according to claim 1, characterized in that: The outer side wall forms an arc-shaped turning surface at the second end, the third connecting plate abuts against the turning surface, and the arc plate is welded to the third connecting plate.

5. The assembled ladder-type main frame according to claim 1, characterized in that: The base plate is provided with a first notch near the first end and a second notch near the second and third ends, and the edges of the first and second notches are provided with inner sidewalls.

6. The assembled ladder main frame according to claim 5, characterized in that: The base plate is provided with reinforcing ribs, which are located outside the first and second notches.

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