Hot rolled steel guide rail of escalator

Abstract

The utility model discloses a hot rolled steel guide rail of an escalator. The device comprises a supporting piece and a working piece, the bottom of the work piece is connected with the top of the supporting piece. The working piece comprises a limiting part and a bearing part; one side boundary of the limiting part is connected with the supporting piece; one side boundary of the bearing part is connected with the supporting piece; the boundary of the other opposite side of the limiting part is connected with the boundary of the other opposite side of the bearing part; the included angle formed by the limiting part and the bearing part in an enclosing mode is 91.2 degrees. According to the utility model, the abrasion between the guide rail and the step chain roller of the escalator can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of elevator equipment, and particularly relates to an escalator hot-rolled steel guide rail. BACKGROUND

[0002] In the prior art, the escalator is a kind of special equipment, and has the characteristics of large load and high safety requirement.

[0003] In the relevant standard "Technical Specification for Escalators for Metro T / CEA 301-2023", the load rating structure load 5000N / m 2 is required for static strength design calculation of various structural components of the escalator, such as truss, guide rail, guide rail support, driving element, etc.The specification requires that the step chain roller overload test runs at a linear speed of 0.8 meters per second and a load of 2500N for 16 hours, and after the test, the roller should have no local concave-convex, delamination, cracking and other phenomena.For the end-driven escalator, the design of reducing the stress on the upper transition section step chain roller should be adopted, the passenger branch should be provided with an unloading track, and the return branch should be provided with an unloading track or designed to ensure that the stress on the step chain roller of the return branch in the upper transition section does not exceed 1300N, on the other hand, the allowable wheel pressure of the bus-type escalator and the heavy-duty escalator is usually about 3000N, and the diameter of the step chain roller is generally 60-100mm, and the width of the idler wheel is generally 20-25mm.

[0004] In the existing escalator hot-rolled steel guide rail, the guide rail and / or step chain roller is usually made of hot-rolled steel plate profile, and the working surface of the guide rail in contact with the step chain roller is designed to be flush with the horizontal plane in the working state, when the heavy load is fully loaded or half loaded, the load is transmitted to the step chain roller through the step or shaft, and the step chain roller is bent and deformed in the axial direction, so that the pressure on the inner and outer sides of the step chain roller is inconsistent, at this time, the step chain roller has an inclination angle alpha, and the inner edge and the guide rail will be relatively seriously worn, thereby greatly reducing the service life of the step chain roller and the guide rail, especially when the upper arc section unloading track is not adjusted in place, the pressure on the step chain roller will be further increased. SUMMARY

[0005] In order to overcome the defects and deficiencies of the prior art, the purpose of the utility model is to provide an escalator hot-rolled steel guide rail, which has the effect of reducing the wear between the guide rail and the step chain roller of the escalator.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An escalator hot-rolled steel guide rail, comprising a support member and a working member.

[0008] The bottom of the working piece is connected with the top of the supporting piece;

[0009] The working piece comprises a limiting part and a receiving part;

[0010] One side boundary of the limiting part is connected with the supporting piece;

[0011] One side boundary of the receiving part is connected with the supporting piece;

[0012] The opposite side boundary of the limiting part is connected with the opposite side boundary of the receiving part;

[0013] The angle of the included angle formed by the limiting part and the receiving part is 91.2°.

[0014] Preferably, the supporting piece and the working piece are integrally formed.

[0015] Preferably, the supporting piece comprises a first supporting piece and a second supporting piece;

[0016] The top of the first supporting piece is connected with the one side boundary of the limiting part;

[0017] The bottom of the first supporting piece is in a bent shape towards the bottom of the second supporting piece;

[0018] The top of the second supporting piece is connected with the one side boundary of the receiving part;

[0019] The bottom of the second supporting piece is in a bent shape towards the bottom of the first supporting piece.

[0020] Preferably, the connection between the supporting piece and the receiving part is smoothly transitioned.

[0021] Preferably, the connection between the limiting part and the receiving part is smoothly transitioned.

[0022] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0023] When the heavy load is full or half loaded, especially when the unloading track of the escalator is not adjusted in place in the upper arc segment, the present application can avoid the problem that the inner side of the step chain roller is pressed too hard and the outer side is pressed too lightly, significantly reduces the mutual wear and tear between the step chain roller and the guide rail, and greatly increases the service life of the step chain roller and the guide rail. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a sectional structure schematic diagram of the hot-rolled steel guide rail of the escalator of the present application;

[0025] Figure 2 It is a sectional structure schematic diagram of the guide rail in the prior art;

[0026] Figure 3The schematic diagram of guide rail and step chain roller of the prior art escalator without heavy load full load or half load;

[0027] Figure 4 The schematic diagram of guide rail and step chain roller of the prior art escalator under heavy load full load or half load;

[0028] Figure 5 The schematic diagram of force bearing of the step chain roller combination of a common specification of the prior art escalator under half load; Figure 4 The local enlarged view of the contact position of the guide rail and the step chain roller;

[0029] Figure 6 The schematic diagram of force bearing of the step chain roller combination of a common specification of the prior art escalator under half load;

[0030] In the figure, 1 is a first support piece, 2 is a second support piece, 3 is a working piece, 31 is a limiting part, 32 is a receiving part, 4 is a guide rail of the prior art, 5 is a step chain roller, and 6 is a step chain roller sub. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clearly understood, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0032] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.

[0033] In addition, the terms "first", "second", "third" are only for description purpose and cannot be understood as indicating or implying relative importance. Similarly, "one", "an" or "the" and the like similar words do not represent quantity limitation, but represent the existence of at least one. "Include" or "contain" and the like similar words mean that the elements or objects appearing before the words cover the elements or objects listed after the words and their equivalents, without excluding other elements or objects. "Connected" or "connected" and the like similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0034] Embodiment

[0035] As Figure 1 shown. The automatic escalator hot-rolled steel guide rail provided by the embodiment comprises a support piece and a working piece.

[0036] The bottom of the working piece is connected with the top of the supporting piece.

[0037] Preferably, the supporting piece and the working piece are integrally formed; and the working piece is an L-shaped long strip flat profile.

[0038] The working piece comprises a limiting part and a receiving part.

[0039] One side boundary of the limiting part is connected with the supporting piece; one side boundary of the receiving part is connected with the supporting piece; and the opposite side boundary of the limiting part is connected with the opposite side boundary of the receiving part.

[0040] Preferably, the angle formed by the limiting part and the receiving part is 91.2°; when the escalator hot-rolled steel guide rail is installed on the escalator and is in a normal use state, the top plane of the receiving part abuts against the chain step roller to serve as a working surface, and the angle formed by the top plane of the receiving part and the horizontal plane is 1.2°, thereby achieving complete abutment of the cylindrical surface of the chain step roller with the receiving part in the normal use state of the escalator.

[0041] The supporting piece comprises a first supporting piece and a second supporting piece.

[0042] The top of the first supporting piece is connected with the side boundary of the limiting part, i.e., the long side of the limiting part; the bottom of the first supporting piece is in a bent shape towards the bottom of the second supporting piece; and preferably, the top of the first supporting piece is pressed against the long side of the limiting part at the connection.

[0043] The top of the second supporting piece is connected with the side boundary of the receiving part, i.e., the long side of the receiving part; and the bottom of the second supporting piece is in a bent shape towards the bottom of the first supporting piece.

[0044] Preferably, a gap is provided between the bottom end surface of the first supporting piece and the bottom end surface of the second supporting piece.

[0045] The connection between the supporting piece and the receiving part is smoothly transitioned; and the connection between the limiting part and the receiving part is smoothly transitioned.

[0046] Preferably, the escalator hot-rolled steel guide rail is integrally made by a hot-rolled steel profile die casting process.

[0047] In combination with Figures 2-5shown. The escalator hot-rolled steel guide rail of the embodiment, in the case of a 27-meter (a relatively large lifting height in the industry) lifting height of the escalator and a half-load of 2500 Newton per square meter, uses material mechanics knowledge (for a guide rail made of a hot-rolled steel plate) to calculate that, under the joint action of the load F and the gravity of the escalator hot-rolled steel guide rail normally placed on a horizontal plane, the angle between the cylindrical surface of the two-end step chain rollers, the bearing surface of the working part of the escalator hot-rolled steel guide rail, and the horizontal plane is 1.2° (at this time, the angle formed by the enclosing of the limiting part and the bearing part in the embodiment is 91.2°, and the prior art does not have such a design, which will produce excessive wear between the excessive rollers and the guide rail as shown by the inclination angle α). Figure 5 shown, can balance the stress size of the inner and outer sides of the step chain rollers, thereby avoiding excessive wear between the excessive rollers and the guide rail.

[0048] In combination with Figure 6 shown, the technical effect formed by the angle of 91.2° formed by the enclosing of the limiting part and the bearing part in the embodiment is analyzed and calculated, and the parameters and calculation results used in the specific analysis and calculation are shown in Tables 1 to 4.

[0049] Table 1

[0050]

[0051] Table 2

[0052]

[0053] Table 3

[0054]

[0055] Table 4

[0056]

[0057] Compared with the prior art, the embodiment has the beneficial effects that:

[0058] When the heavy load is full or half-loaded, especially when the unloading track of the escalator in the upper arc segment is not adjusted in place, the present application can avoid the problem of large pressure on the inner side and small pressure on the outer side of the step chain rollers, significantly reduce the mutual wear between the step chain rollers and the guide rail, and thereby greatly increase the service life of the step chain rollers and the guide rail.

[0059] The above embodiment is a preferred embodiment of the present application, but the embodiment of the present application is not limited by the above embodiment, and any change, modification, substitution, combination, simplification made without departing from the spirit and principles of the present application should be an equivalent replacement method, and all are included in the protection scope of the present application.

Claims

1. An escalator hot-rolled steel guide rail, comprising a support piece, a working piece; the bottom of the working piece is connected with the top of the support piece; the working piece comprises a limiting part and a receiving part; one side boundary of the limiting part is connected with the support piece; one side boundary of the receiving part is connected with the support piece; the opposite side boundary of the limiting part is connected with the opposite side boundary of the receiving part; characterized in that the angle of the included angle formed by the limiting part and the receiving part is 91.2°.

2. The hot-rolled steel escalator rail of claim 1, wherein, The support piece and the working piece are integrally formed.

3. The hot-rolled steel escalator rail of claim 1, wherein, The support piece comprises a first support piece and a second support piece; the top of the first support piece is connected with one side boundary of the limiting part; the bottom of the first support piece is in a bent shape towards the bottom of the second support piece; the top of the second support piece is connected with one side boundary of the receiving part; the bottom of the second support piece is in a bent shape towards the bottom of the first support piece.

4. The hot-rolled steel escalator rail of claim 1, wherein, The connection between the support piece and the receiving part is smoothly transitioned.

5. The hot-rolled steel escalator rail of claim 1, wherein, The connection between the limiting part and the receiving part is smoothly transitioned.

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