Flange blank for underground explosion-proof tank of coal mine

Abstract

The utility model belongs to the technical field of coal mine underground explosion-proof box accessories, and discloses a flange blank for a coal mine underground explosion-proof box, which comprises two longitudinal beams, two cross beams and a partition plate connecting beam, wherein the longitudinal beams, the cross beams and the partition plate connecting beams are all plate bodies with the same thickness; the two longitudinal beams, the two cross beams and the partition plate connecting beam are cast into a whole to form a flange blank shaped like a Chinese character'ri '. Due to the structure, the production process steps are reduced, the welding process is not needed any more, the later production efficiency is improved, the dimensional accuracy is improved, and the service life of the explosion-proof box is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal mine underground explosion -proof box accessory technical field, provide a kind of flange blank for coal mine underground explosion -proof box with improve later production efficiency, improve size accuracy and prolong the service life of explosion -proof box. BACKGROUND

[0002] Referring to the accompanying drawings Figure 1 The flange blank for coal mine underground explosion -proof box includes two longitudinal beams (1), two cross beams (2) and a partition connecting beam (3) integrally welded into a "day" shaped flange blank (4). The bottom surface of the partition connecting beam (3) is provided with a partition connecting plate (6) integrally formed and protruding downward. The processing technology of the flange blank for coal mine underground explosion -proof box with such structure is to first process the connecting holes (7) on the longitudinal beams (1), cross beams (2) and partition connecting beam (3) by drilling machine or milling machine, then mill the top surface and bottom surface of the longitudinal beams (1), cross beams (2) and partition connecting beam (3) by milling machine, and finally weld the longitudinal beams (1), cross beams (2) and partition connecting beam (3) into a "day" shaped flange blank (4) by welding. The whole processing procedure has many steps, and there are virtual welding and sand holes in the welding process, resulting in high rework rate and low production efficiency. When performing surfacing operation, 2mm of positioning end face needs to be reserved, and after welding, the position is easy to be misaligned and there is likely to be a gap at the position of the weld (8), so the thickness accuracy cannot be guaranteed, which shortens the service life of the subsequent coal mine underground explosion -proof box. SUMMARY

[0003] Therefore, the utility model aims at providing a flange blank for coal mine underground explosion -proof box with improved later production efficiency, improved size accuracy and prolonged service life.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0005] The utility model provides a flange blank for coal mine underground explosion -proof box, which comprises two longitudinal beams, two cross beams and a partition connecting beam.

[0006] To prevent workers from being injured during transportation and loading and unloading, in the above-mentioned scheme, further, a chamfering portion is arranged at the outer corner of the flange blank.

[0007] The utility model has the advantages of:

[0008] Due to the structure, the flange blank can be directly clamped on the fixture of the milling machine for milling and drilling processing, the whole processing process is simplified, the production process steps are reduced, the welding process is no longer needed, the later production efficiency is improved, the dimensional accuracy is improved, and the service life of the explosion-proof box is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will make the preferred detailed description of the utility model combined with the drawings, in which:

[0010] Figure 1 It is a structural schematic view of the prior flange blank;

[0011] Figure 2 It is a structural schematic view of the utility model;

[0012] The drawings show that: 1, longitudinal beam; 2, cross beam; 3, partition connecting beam; 4, flange blank; 5, chamfer part; 6, partition connecting plate; 7, connecting hole; 8, weld. DETAILED DESCRIPTION

[0013] The utility model will be further described below combined with specific implementation. In which, the drawings are only used for example description, and the representation is only schematic diagram, and not physical drawing, and it cannot be understood as the limitation of the patent; in order to better illustrate the embodiment of the utility model, some components of the drawings will be omitted, enlarged or reduced, and it does not represent the size of actual product; for the person skilled in the art, it is understandable that some known structures in the drawings and their description can be omitted.

[0014] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance. The utility model will be further described in detail below combined with the drawings.

[0015] As Figure 2The utility model provides a kind of flange blank for coal mine underground explosion-proof box, including two longitudinal beams 1, two cross beams 2 and a baffle connecting beam 3;Wherein: the longitudinal beam 1, cross beam 2 and baffle connecting beam 3 are the plate body of consistent thickness;Two longitudinal beams 1, two cross beams 2 and a baffle connecting beam 3 are integrally formed into the flange blank 4 of "day" shape by casting.In this embodiment, flange blank 4 is directly clamped on the fixture of milling machine to carry out milling surface and drilling processing, and the whole processing process is simplified, and production process steps are reduced, welding process is no longer needed, and post-production efficiency, dimensional accuracy and service life of explosion-proof box are improved.

[0016] To prevent carrying and unloading from being bumped and hurting workers, the outer corner of the flange blank 4 is provided with a chamfer 5.

[0017] To further improve processing efficiency, in the above embodiment, preferably: the top plate surface and the bottom plate surface of the flange blank 4 are both provided with connecting holes 7. The provision of connecting holes 7 reduces the amount of drilling processing chips.

[0018] The subsequent processing step mode in the above embodiment is: flange blank 4 is directly clamped on the fixture of a milling machine, and the top plate surface and the bottom plate surface are milled by the milling machine. The milling cutter is replaced with a drilling tool for drilling processing. The whole processing process is simplified, the production steps are reduced, and welding process is no longer needed. When milling the bottom plate surface, the baffle connecting plate on the baffle connecting beam 3 is processed by milling to form the final product (the final product refers to the flange piece that can be understood and used), effectively ensuring the thickness accuracy.

[0019] Finally, it is pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limiting. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions, and they should all be covered in the scope of the claims of the utility model.

Claims

1. A flange blank for an explosion-proof box in a coal mine underground, comprising two longitudinal beams (1), two transverse beams (2) and a partition connecting beam (3); characterized in that: The longitudinal beam (1), the cross beam (2) and the partition connecting beam (3) are all plate bodies with consistent thickness; the two longitudinal beams (1), the two cross beams (2) and the partition connecting beam (3) are integrally cast to form a "day" shaped flange blank (4).

2. The flange blank for an underground coal mine explosion-proof box according to claim 1, characterized in that: A chamfer part (5) is arranged at the outer corner of the flange blank (4).

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