JP5371367B2 - Manufacturing method of escalator frame - Google Patents

Abstract

The invention provides a manufacturing method for escalator frame which not only can ensure the needed strength, not also has convenient manufacturing process and high precision. A manufacturing method for escalator frame is provided, wherein the escalator frame is disposed in a manner of crossing the upper storey and the lower storey, and composed of a plurality of section steel. In the manufacturing process of the escalator frame, a constructing edge (10b) of the section steel is reserved, consecutive cut-outs (11) are formed on the other constructing edges (10a), and the cut-outs (11) are formed into the corner portion intersecting with the reserved constructing edge (10b), then subject to the bending machining with determined angle subsequently. Thereafter, a bending point is formed by at least welding the bevel section.

Description

  The present invention relates to a method for manufacturing an escalator frame formed by combining a plurality of steel shapes.

  The escalator frame constructed between the upper floor and the lower floor is formed by a so-called truss structure by combining a plurality of steel shapes. Such an escalator frame has an upper parallel portion parallel to the upper floor, a lower parallel portion parallel to the lower floor, and an inclined portion connecting the upper parallel portion and the lower parallel portion, and an upper parallel portion. A break point having a predetermined angle is formed at a position where the portion and the inclined portion intersect, and a position where the lower parallel portion and the inclined portion intersect.

Figure 12 is a perspective view showing a method of manufacturing a conventional escalator frame, FIG 13 is a fragmentary sectional view of the escalator frame shown in FIG. 12, FIG. 14 is a side view showing another conventional method for manufacturing a d Sukareta frame.

  Conventionally, as a method of forming the above-described break point, as shown in FIG. 12 and FIG. 13, a cut 41 is made halfway along one component side of a steel plate, for example, an angle steel 40 having an L-shaped cross section, Then, bending is performed at a predetermined angle, and after that, welding is performed to form a break point, as shown in FIG. 14, a plurality of steel plates 51 to 55 having a predetermined angle of cut are butted, and then welded There is one that forms a break point.

  However, in the former former described above, only one half of the constituent side of the angle steel having the L-shaped cross section is cut, and the remaining one constituent side and the plate thickness are not uniform. Since it is necessary to apply pressure to the corners that do not exist, bending occurs, and there is a problem that high-precision bending is difficult. Further, in the latter case of the butt structure, there is a problem that the amount of welding is large, so that thermal deformation becomes large and accuracy is lowered.

  The present invention has been made from the above-described prior art, and an object of the present invention is to provide a manufacturing method of an escalator frame that is easy to manufacture and highly accurate while ensuring the necessary strength.

In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention is a method for manufacturing an escalator frame that is laid across an upper floor and a lower floor and is formed by combining a plurality of steel shapes. in, while being continuously formed in other configurations sides leaving one arrangement side of the mold steel, provided with a notch that is formed to include a corner intersecting the remaining said one configuration sides, then, predetermined It is characterized in that bending is performed at an angle of, and thereafter, at least a groove portion is welded to form a break point.

  In the invention according to claim 1 of the present invention, the incision is formed continuously with the other constituent sides while leaving one constituent side of the steel plate, and the notch includes a corner portion intersecting with the remaining one constituent side. Formed with. As a result, it is sufficient to bend only one component side of the steel plate, that is, a flat plate portion having a uniform plate thickness, and bending can be performed easily and with high accuracy. On the other hand, a groove part is inevitably formed by the change in the angle of the die steel due to bending, and the strength is increased by welding to this groove part, and the necessary strength as an escalator frame is secured with a relatively small amount of welding. You can also.

In the invention according to claim 2 of the present invention, the die steel is provided with the notch having a substantially I-shaped cross section, and the predetermined angle is set so that a joint portion of the die steel provided with the notch is an internal angle. The folding point is formed by bending the material.

  In the invention according to claim 2 of the present invention, a break having the joint portion as an inner corner can be formed by making a cut having a substantially I-shaped cross-sectional shape in the steel plate.

Furthermore, the invention according to claim 3 of the present invention is characterized in that the die steel is provided with the notch having a substantially V-shaped cross-sectional shape, and the predetermined angle is set so that a joint portion of the die steel provided with the notch has an outer angle. The folding point is formed by bending the material.

  In the invention which concerns on Claim 3 of this invention, the break point which made the junction part the outer corner can be formed by putting the notch which has a substantially V-shaped cross-sectional shape in a shape steel.

  Furthermore, the invention according to claim 4 of the present invention is characterized in that a triangular plate is welded to the folding point with the joint portion as an inner corner.

  In the invention according to claim 4 of the present invention, a strength is obtained by providing a notch having a substantially I-shaped cross-sectional shape and welding a triangular plate in a triangular gap generated when forming a fold having the joint as an inner corner. Can be increased.

The invention according to claim 5 of the present invention is an escalator frame manufacturing method in which a plurality of mold steels are combined and formed between an upper floor and a lower floor. one of while being configured continuously sides to other configurations sides leaving formation, formed to include a corner intersecting the remaining said one configuration sides, cut and substantially V has a substantially I-shaped cross section A cut having a letter-shaped cross-sectional shape is provided, and then a joint portion of the die steel having a cut having a substantially I-shaped cross-sectional shape is provided at an inner angle. And a bending portion at a predetermined angle and having a substantially V-shaped cross-sectional shape, wherein the die steel joint provided with the substantially V-shaped cross-sectional shape is provided. Bend to a predetermined angle so that it is the outside angle Thereafter, it is characterized in that to form a corner subjected to welding at least groove portions.

  In the invention according to claim 5 of the present invention, a notch having a substantially I-shaped cross-sectional shape and a notch having a substantially V-shaped cross-sectional shape are continuously formed on the other constituting sides while leaving one constituting side of the die steel. In addition, these cuts are formed so as to include a corner portion intersecting with one remaining component side. As a result, it is sufficient to bend only one component side of the steel plate, that is, a flat plate portion having a uniform plate thickness, and bending can be performed easily and with high accuracy. In addition, by forming a cut having a substantially I-shaped cross-sectional shape in the steel mold, forming a break point with the joint as an inner corner, and by making a cut having a substantially V-shaped cross-sectional shape in the steel mold, Forming a folding point with the outer corner as an outer corner, thereby, an upper parallel part parallel to the upper floor, a lower parallel part parallel to the lower floor, and an inclined part connecting the upper parallel part and the lower parallel part It is possible to form an escalator frame having Furthermore, a groove part is inevitably formed by the change in the angle of the die steel due to bending, and the strength is increased by welding to this groove part, and the necessary strength as an escalator frame is secured with a relatively small amount of welding. You can also.

  According to the present invention, easy and highly accurate bending can be performed, and the amount of welding can be relatively reduced, whereby a highly accurate escalator frame can be realized.

  Hereinafter, an embodiment of a method for manufacturing an escalator frame according to the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a first embodiment of a method for manufacturing an escalator frame according to the present invention, in which a cut having a substantially I-shaped cross section is provided, and FIG. 2 is joined to the escalator frame of FIG. FIG. 3 is a perspective view showing a state in which a cut having a substantially V-shaped cross-sectional shape is provided, and FIG. 4 is a perspective view showing a joint portion on the escalator frame of FIG. FIG. 5 is a longitudinal sectional view showing a state of cutting provided in the escalator frame, FIG. 6 is a schematic overall view of the escalator frame to which the present invention is applied, and FIG. FIG. 8 is a side view showing a groove portion formed when bending is performed with the joint as an inner angle, and FIG. 9 is bending with the joint as an outer angle. It is a side view which shows the groove part formed in the case.

  As shown in FIG. 6, the escalator frame 1 is formed of a so-called truss structure in which a plurality of mold steels are combined. Such an escalator frame 1 includes an upper parallel part 2 parallel to the upper floor, a lower parallel part 3 parallel to the lower floor, and an inclined part 4 connecting the upper parallel part 1 and the lower parallel part 3. In addition, folding points A, B, C, and D having predetermined angles are formed at positions where the upper parallel portion 2 and the inclined portion 4 intersect and at positions where the lower parallel portion 3 and the inclined portion 4 intersect. In this embodiment, as shown in FIG. 5, an angle steel 10 having an L-shaped cross-section composed of a first component side 10 a having a height dimension of 125 mm and a second component side 10 b having a width dimension of 75 mm is used. It is assumed that the escalator frame 1 is formed.

  In the case of the first embodiment, when the break point A and the break point C are formed, a notch 11 having a substantially I-shaped cross-sectional shape is made in the angle steel 10 as shown in FIG. As shown in FIG. 5, the notch 11 is formed over the entire length of the first component side 10a having a height dimension of 125 mm, and for example, 25 mm of the second component side 10b having a width dimension of 75 mm. It is formed over the width dimension. Thus, the cut 11 is formed including the corner portion R1. Next, as shown in FIG. 2, bending is performed at a predetermined angle so that the joint portion of the angle steel 10 provided with the cuts 11 becomes an internal angle. After that, as shown in FIG. 8, the main part including the groove portion 12 that is inevitably formed by a change in the angle of the steel plate by bending is welded, and as shown in FIG. The triangular plate 13 is welded to the triangular gap generated when the break point is formed, and the break point A and the break point C with the joint portion as the inner corner are formed.

  On the other hand, when forming the break point B and the break point D, as shown in FIG. 3, a cut 14 having a substantially V-shaped cross-sectional shape is made in the angle steel 10. The notch 14 is formed over the entire length of the first component side 10a having a height dimension of 125 mm, and the width dimension of 25 mm, for example, of the second component side 10b having a width dimension of 75 mm, as described above. It is formed over. Thereby, the cut 14 is formed including the corner portion R1. Next, as shown in FIG. 4, bending is performed at a predetermined angle so that the joint portion of the angle steel 10 provided with the cuts 14 becomes an outer angle. After that, as shown in FIG. 9, the main part including the groove part 15 which is inevitably formed by the change in the angle of the die steel by bending is welded, and the break points B and D with the joint part as the outer corner are formed. Form.

  According to the first embodiment, it is only necessary to bend only one component side of the steel plate, that is, a flat plate portion having a uniform plate thickness, and bending can be performed easily and with high accuracy. In addition, the groove portions 12 and 15 are inevitably formed by the change in the angle of the die steel due to bending, and the strength is increased by performing welding on these portions, and the necessary strength as the escalator frame 1 is secured with a relatively small welding amount. You can also Thus, easy and highly accurate bending can be performed, and the amount of welding can be relatively reduced, whereby the highly accurate escalator frame 1 can be realized.

  FIG. 10 is a perspective view showing a second embodiment of the method for manufacturing an escalator frame according to the present invention.

  In the second embodiment, as shown in FIG. 10, a cross-sectional shape in the form of a letter consisting of a first component side 20a, a second component side 20b, a third component side 20c, and a fourth component side 20d. An escalator frame is formed using the square steel 20 having the following. In this case, the second component side 20b is left and other component sides, that is, the first component side 20a, the third component side 20c, and the fourth component side 20d are formed continuously. A cut 21 formed including the corners R2 and R3 intersecting with the side 20b is provided, then bending is performed at a predetermined angle, and then welding is performed at least on the groove to form a break point. .

  FIG. 11 is a perspective view showing a third embodiment of the method for manufacturing an escalator frame according to the present invention.

  In the third embodiment, as shown in FIG. 11, a grooved steel 30 having a U-shaped cross-sectional shape including a first component side 30a, a second component side 30b, and a third component side 30c is used. Thus, an escalator frame is formed. In this case, the second component side 30b is left and the other component sides, that is, the corners that are formed continuously with the first component side 20a and the third component side 20c and intersect with the second component side 20b. The notch 31 formed including the portion R4 is provided, and then bending is performed at a predetermined angle, and thereafter, at least the groove portion is welded to form a break point.

It is 1st Embodiment of the manufacturing method of the escalator frame which concerns on this invention, and is a perspective view which shows the state which provided the notch which has a substantially I-shaped cross-sectional shape. It is a perspective view which shows the state which performed the bending process which made the junction part the inner angle to the escalator frame of FIG. It is a perspective view which shows the state which provided the notch which has a substantially V-shaped cross-sectional shape. It is a perspective view which shows the state which performed the bending process which made the junction part the outer angle to the escalator frame of FIG. It is a longitudinal cross-sectional view which shows the state of the notch | incision provided in an escalator frame. 1 is a schematic overall view of an escalator frame to which the present invention is applied. It is a general | schematic principal part enlarged view of an escalator frame. It is a side view which shows the groove part formed when the bending process which made the junction part the inner angle was performed. It is a side view which shows the groove part formed when the bending process which made the junction part the outer angle was performed. It is a perspective view which shows 2nd Embodiment of the manufacturing method of the escalator frame which concerns on this invention. It is a perspective view which shows 3rd Embodiment of the manufacturing method of the escalator frame which concerns on this invention. It is a perspective view which shows the manufacturing method of the conventional escalator frame. It is principal part sectional drawing of the escalator frame shown in FIG. It is a side view which shows the manufacturing method of the other conventional escalator frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Escalator frame 2 Upper parallel part 3 Lower parallel part 4 Inclined part 10 Angle steel 11, 14, 21, 31 Cut 12, 15 Groove 13 Triangular plate 20 Square steel 30 Channel steel A, B, C, D Folding point

Claims (5)

In the manufacturing method of the escalator frame that is laid across the upper floor and the lower floor and is formed by combining a plurality of steel shapes,
The steel plate is formed continuously with the other component sides while leaving one component side, and provided with a notch formed including a corner portion intersecting with the remaining one component side, and then a predetermined angle A method of manufacturing an escalator frame, characterized in that a bending process is performed, and thereafter, at least a groove portion is welded to form a break point. Forming the break point by providing the notch having a substantially I-shaped cross-sectional shape in the mold steel , and bending the predetermined angle so that the joint portion of the mold steel provided with the notch is an internal angle The manufacturing method of the escalator frame of Claim 1 characterized by the above-mentioned. Forming the break point by providing the notch having a substantially V-shaped cross-sectional shape in the mold steel , and bending the predetermined angle so that the joint portion of the mold steel provided with the notch is an outer angle. The manufacturing method of the escalator frame of Claim 1 characterized by the above-mentioned.   3. The method of manufacturing an escalator frame according to claim 2, wherein a triangular plate is welded to the break point having the joint portion as an inner corner. In the manufacturing method of the escalator frame that is laid across the upper floor and the lower floor and is formed by combining a plurality of steel shapes,
The steel plate is formed continuously with the other constituent sides while leaving one constituent side, and includes a corner portion intersecting with the remaining one constituent side, and has a substantially I-shaped cross-sectional shape. provided a notch having a notch and a substantially V-shaped cross section, respectively, then, in the cut portion having a substantially I-shaped cross section, of the type steel having a cut having the substantially I-shaped cross section The above-mentioned shaped steel , which is bent at a predetermined angle so that the joint portion becomes an internal angle, and is provided with a notch having a substantially V-shaped cross-sectional shape and having a notch having the substantially V-shaped cross-sectional shape. A manufacturing method of an escalator frame, wherein bending is performed at a predetermined angle so that the joint portion of the slab is an outer angle, and thereafter, at least a groove portion is welded to form a break point.

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