Auxiliary device for repair welding of slender pipe shaft

Abstract

The utility model discloses an auxiliary device for repair welding of a slender pipe shaft, comprising a load-bearing beam, a plurality of reference blocks are installed at the bottom of the load-bearing beam, and the reference blocks are spaced apart in the extension direction of the load-bearing beam, a plurality of positioning blocks are installed at the top of the load-bearing beam, and the positioning blocks are spaced apart in the extension direction of the load-bearing beam, and a positioning straight groove is provided on the positioning block in the extension direction of the load-bearing beam, and a plurality of positioning plates are fixedly installed in the positioning straight groove, and a positioning hole matching the slender pipe shaft is provided on the positioning plate, and a plurality of the positioning holes are coaxially provided. The beneficial effects of the utility model are: the necessary positioning function and structural rigidity of the slender pipe shaft in the repair welding process are improved, the whole device has a simple and compact structure, and can ensure that the slender pipe shaft meets the shape and position tolerance requirements of the product straightness, coaxiality, etc. after the repair welding.

Description

Technical Field

[0001] The utility model relates to the field of repair welding of slender pipe shafts, in particular to an auxiliary device for repair welding of slender pipe shafts. Background Art

[0002] During the manufacturing process and subsequent product use of shaft parts, local processing damage and wear and tear are unavoidable on the surface of the parts. Repair welding of the above-mentioned parts is a commonly used economical and feasible technical means. For slender tubular shaft parts, it is difficult to ensure their straightness after repair, especially it is difficult to ensure the form and position tolerance requirements such as coaxiality between important surfaces during the repair process. Therefore, the quality of their repair is not high. After long-term research, the inventor has designed an auxiliary device for the repair welding of slender tubular shafts, and then used the auxiliary device to control welding deformation to ensure the straightness of the parts after repair, especially the form and position tolerance requirements such as coaxiality between important surfaces. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide an auxiliary device for repairing and welding a slender pipe shaft.

[0004] The purpose of the utility model is achieved through the following technical solutions: an auxiliary device for rework welding of a slender tubular shaft, comprising a load-bearing beam, a plurality of reference blocks are installed at the bottom of the load-bearing beam, the plurality of reference blocks are arranged at intervals in the extension direction of the load-bearing beam, a plurality of positioning blocks are installed at the top of the load-bearing beam, the plurality of positioning blocks are arranged at intervals in the extension direction of the load-bearing beam, a positioning straight groove is opened on the positioning block in the extension direction of the load-bearing beam, a plurality of positioning plates are fixedly installed in the positioning straight groove, a positioning hole matching the slender tubular shaft is opened on the positioning plate, and the plurality of positioning holes are opened coaxially.

[0005] Optionally, the positioning plate is a circular plate, and the bottom and the notch of the positioning straight groove are in close contact with the outer edge of the positioning plate.

[0006] Optionally, the load-bearing beam is a rectangular square steel tube.

[0007] Optionally, the lower surface of the reference block is parallel to the surface of the positioning straight groove of the positioning block.

[0008] Optionally, two positioning plates are welded in the positioning straight groove.

[0009] Optionally, the reference blocks are welded to the lower surface of the load-bearing beam at equal intervals.

[0010] Optionally, the positioning blocks are welded on the upper surface of the load-bearing beam at equal intervals.

[0011] The utility model has the following advantages: the auxiliary device for repair welding of the slender pipe shaft of the utility model improves the necessary positioning function and structural rigidity of the slender pipe shaft during the repair welding process. The whole device has a simple and compact structure and can ensure that the slender pipe shaft meets the shape and position tolerance requirements such as product straightness and coaxiality after repair welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model

[0013] Figure 2 The structure diagram of the slender tube shaft being installed on the auxiliary device Figure 1

[0014] Figure 3 The structure diagram of the slender tube shaft being installed on the auxiliary device Figure 2

[0015] Figure 4 The structure diagram of the slender tube shaft being installed on the auxiliary device Figure 3

[0016] In the figure, 1-reference block, 2-bearing beam, 3-positioning block, 4-positioning plate, 5-positioning straight groove, 6-positioning hole. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, an auxiliary device for rework welding of a slender tubular shaft includes a load-bearing beam 2, and a plurality of reference blocks 1 are installed at the bottom of the load-bearing beam 2. The plurality of reference blocks 1 are spaced apart in the extension direction of the load-bearing beam 2. In the present embodiment, the reference blocks 1 are welded to the lower surface of the load-bearing beam 2. The reference blocks 1 are preferably rectangular plates, and the number and mutual spacing of the reference blocks 1 are arranged according to the length and stiffness of the load-bearing beam 2. The purpose is to ensure the stiffness of the load-bearing beam 2 and avoid bending and deformation of the load-bearing beam 2. Optionally, the reference blocks 1 are welded to the lower surface of the load-bearing beam 2 at equal intervals.

[0024] In this embodiment, if Figure 1 , Figure 2 and Figure 3As shown, a plurality of positioning blocks 3 are installed on the top of the load-bearing beam 2, and the plurality of positioning blocks 3 are arranged at intervals in the extension direction of the load-bearing beam 2. A positioning straight groove 5 is opened on the positioning block 3 in the extension direction of the load-bearing beam 2, and a plurality of positioning plates 4 are fixedly installed in the positioning straight groove 5. In this embodiment, the positioning block 3 is welded to the upper surface of the load-bearing beam 2. The positioning block 3 is a rectangular plate, and a groove is opened on the upper surface of the rectangular plate to form a positioning straight groove 5. The width and depth of the positioning straight groove 5 are determined according to the outer diameter of the positioning plate 4, and the number and welding position of the positioning blocks 3 are determined according to the welding position and coaxiality requirements of the slender pipe shaft to be welded. In this embodiment, the positioning plate 4 is a circular plate, and the coaxiality of the center of its positioning hole 6 and the outer circle of the positioning plate 4 is not lower than the coaxiality requirements between the positioning surfaces of the slender pipe shaft to be welded. The positioning hole 6 and the slender pipe shaft to be welded adopt a clearance fit under the premise of ensuring the coaxial requirement, so as to facilitate the pre-installation and disassembly of the slender pipe shaft to be welded. When the positioning plate 4 is installed in the positioning block 3, as shown in Figure 4 As shown, the bottom and the notch of the positioning straight groove 5 are in close contact with the outer edge of the positioning plate 4. An arc is determined based on three points, which can ensure that multiple positioning plates 4 installed on the same positioning block 3 are coaxial, thereby ensuring the coaxiality requirements of the slender pipe axis to be welded.

[0025] In this embodiment, if Figure 4 As shown, the load-bearing beam 2 is a rectangular square steel tube, so the upper and lower side walls and the front and rear side walls of the load-bearing beam 2 are all flat, so when installing, it is convenient to weld the positioning block 3 and the reference block 1. When the positioning block 3 and the reference block 1 are installed, the lower surface of the reference block 1 and the surface of the positioning straight groove 5 of the positioning block 3 are mutually referenced, ensuring that the lower surfaces of multiple reference blocks 1 and the surfaces of the positioning straight grooves 5 of multiple positioning blocks 3 are theoretically parallel to each other, and the lower surfaces of multiple reference blocks 1 are located on the same plane, and the surfaces of multiple positioning straight grooves 5 are located on the same plane, thereby ensuring the straightness requirements of the slender pipe axis to be welded

[0026] The working process of the utility model is as follows: first, the auxiliary device is hoisted onto the welding platform, and after it is placed stably, the slender pipe shaft to be welded is sequentially passed through the positioning holes 6 on the auxiliary device. After the position is determined, rework welding is performed. After welding, the workpiece is cooled to room temperature and then removed from the device.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary device for repair welding of a slender pipe shaft, characterized in that: It includes a load-bearing beam, a plurality of reference blocks are installed at the bottom of the load-bearing beam, and the plurality of reference blocks are arranged at intervals in the extension direction of the load-bearing beam; a plurality of positioning blocks are installed at the top of the load-bearing beam, and the plurality of positioning blocks are arranged at intervals in the extension direction of the load-bearing beam; a positioning straight groove is provided on the positioning block in the extension direction of the load-bearing beam, a plurality of positioning plates are fixedly installed in the positioning straight groove, a positioning hole matching the slender tube axis is provided on the positioning plate, and the plurality of positioning holes are coaxially provided, the positioning plate is a circular plate, and the bottom and the notch of the positioning straight groove are in close contact with the outer edge of the positioning plate.

2. The auxiliary device for repair welding of a slender tube shaft according to claim 1, characterized in that: The load-bearing beam is a rectangular square steel tube.

3. The auxiliary device for repair welding of a slender tube shaft according to claim 1, characterized in that: The lower surface of the reference block is parallel to the surface of the positioning straight groove of the positioning block.

4. The auxiliary device for repair welding of a slender tube shaft according to claim 1, characterized in that: Two positioning plates are welded in the positioning straight groove.

5. The auxiliary device for repair welding of a slender tube shaft according to claim 1, characterized in that: The reference blocks are welded on the lower surface of the load-bearing beam at equal intervals.

6. The auxiliary device for repair welding of a slender tube shaft according to claim 1, characterized in that: The positioning blocks are welded on the upper surface of the load-bearing beam at equal intervals.

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