CN218764962U

CN218764962U - Production inspection device for joint welding

Info

Publication number: CN218764962U
Application number: CN202222758585.6U
Authority: CN
Inventors: 江芳琪; 朱小平; 钟宏伟; 崔晶; 陈志阳
Original assignee: Jiangxi Changhe Aviation Industries Co Ltd
Current assignee: Jiangxi Changhe Aviation Industries Co Ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-03-28
Anticipated expiration: 2032-10-20

Abstract

The utility model belongs to the welding field, concretely relates to be used for connecting welded production verifying attachment. Due to the influence of welding stress, the relative positions of the joint holes at the two ends of the rod change greatly before and after welding, and the size is difficult to ensure. The utility model comprises a base and a V-shaped support arranged in the middle of the base, wherein sleeve supports are symmetrically arranged on the left side and the right side of the V-shaped support, a V-shaped groove for placing a rod pipe is arranged at the upper end of the V-shaped support, an integrated screw rod is arranged on the side surface of the V-shaped groove, a movable pressing plate is pressed at the upper end of the rod pipe, and the screw rod is connected with a nut after passing through the movable pressing plate; the top of the sleeve support is provided with a sleeve for installing a welding mandrel or a checking mandrel, and during welding, a welding mandrel supports a joint for welding and is positioned by a welding positioning pin; during inspection, the joint is supported by the inspection mandrel, and inspection is performed through the inspection positioning pin. Simple structure, easy-to-use, welding and inspection are in an organic whole, have solved the hole site overproof problem that connects because of welding the shrink and lead to.

Description

Production inspection device for joint welding

Technical Field

The utility model belongs to the welding field, concretely relates to be used for connecting welded production verifying attachment.

Background

As shown in fig. 1 and 2, the stay bar product is formed by welding a bar pipe and a joint, and is used as a common structural connection mechanism in a helicopter, and is also a part where strength failure and fatigue failure first impact, so that the requirements on the dimensional accuracy and the position accuracy of a connection hole on the joint are relatively high.

At present, in order to ensure the precision of a joint hole, the joint hole is in a rough machining state before welding generally, and the joint hole is subjected to finish reaming after welding.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem of telling about, provide a joint welding and inspection in technological equipment of an organic whole. The two joint holes are still in a rough machining state before welding, but estimated welding shrinkage is added to relative positions on the basis of design, so that most welding deformation can be compensated after welding, and meanwhile, the relative positions of the two joint holes need to be detected before finish reaming after welding to check whether the relative positions are within a reasonable tolerance range, so that later-stage finish machining adjustment is facilitated, and the hole positions of parts are guaranteed not to be out of tolerance.

The utility model provides a be used for connecting welded production verifying attachment for at pole pipe both ends welding and check joint, the device main part includes the base and installs the V type support in base middle part position, installs sleeve support in the left and right sides symmetry of V type support, wherein

The upper end of the V-shaped support is provided with a V-shaped groove for placing the rod pipe, the side surface of the V-shaped groove is also provided with an integrated screw rod, the movable pressing plate is pressed at the upper end of the rod pipe, and the screw rod penetrates through the movable pressing plate and then is connected with the nut;

the top of the sleeve support is provided with a sleeve for installing a welding mandrel or a checking mandrel, and during welding, a welding mandrel supports a joint for welding and is positioned by a welding positioning pin; during the inspection, the joint is supported by an inspection mandrel and is inspected through an inspection positioning pin.

Advantageously, the hole of the welding mandrel corresponding to the position of the joint is made as a circular hole with a diameter d1, the central position of the hole being shifted outwards along the mandrel by half the weld shrinkage δ with respect to the theoretical position.

Advantageously, the hole of the checking mandrel corresponding to the joint position is an oblong hole, the diameter of the semicircular part is d2, the distance a between the two semicircular centers of the oblong hole is the maximum tolerance allowed for welding the joint hole, wherein d2 is 0.2mm smaller than d 1.

Advantageously, the sleeve has a pin hole for welding and a pin hole for inspection, both of which are different in size.

Advantageously, the welding mandrel is fixed in the sleeve by a welding plug and the testing mandrel is fixed in the sleeve by a testing plug.

Advantageously, the movable platen has a kidney-shaped through hole.

Advantageously, a U-shaped groove is further provided on the side of the V-shaped groove, and the screw is vertically fixed in the U-shaped groove.

The utility model has the advantages that: the invention has simple structure and easy use, integrates welding and inspection, and solves the problem of hole site out-of-tolerance caused by welding shrinkage of the joint.

Drawings

The illustrative examples, as well as a preferred mode of use, further objectives, and descriptions thereof, will best be understood by reference to the following detailed description of an example of the present invention when read in conjunction with the accompanying drawings, wherein:

FIG. 1 is a front view of a brace assembly;

FIG. 2 is a top view of the brace bar assembly;

FIG. 3 is a perspective view of the production inspection device;

FIG. 4 is a schematic view of a welding mandrel;

FIG. 5 is a schematic structural view of a mandrel for inspection;

FIG. 6 is a schematic view of a weld assembly;

FIG. 7 is a schematic view of the test assembly.

1-base, 2-V-shaped support, 3-movable pressing plate, 4-nut, 5-sleeve support, 6-screw, 7-welding mandrel, 8-inspection mandrel, 9-inspection bolt, 10-welding bolt and 11-welding positioning pin

Detailed Description

The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. Indeed, many different examples may be described and should not be construed as limited to the examples set forth herein. Rather, these examples are described so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Referring to fig. 3, the device comprises a base 1, a V-shaped support 2, a movable pressure plate 3, a nut 4, a sleeve support 5, a screw 6, a welding mandrel 7, an inspection mandrel 8, an inspection bolt 9, a welding bolt 10 and a welding positioning pin 11. The parts of the base 1, the V-shaped support 2, the movable pressing plate 3, the nut 4, the sleeve support 5 and the screw 6 are shared during welding and inspection, the core shaft 7 for welding, the bolt 10 for welding and the positioning pin 11 for welding are only used for welding, and the core shaft 8 for inspection, the bolt 9 for inspection and the positioning pin for inspection are only used for inspection.

The V-shaped support 2 is fixed on the base 1 through a screw and a pin, the stay bar product is placed on the V-shaped support 2, the V-shaped support 2 is further provided with an integrated screw 6, the stay bar product is tightly pressed after being connected through the movable pressing plate 3, the nut 4 and the screw 6, and specifically, the movable pressing plate 3 penetrates through the screw 6 and exerts tightening force through the nut 4. The sleeve support 5 is fixed on the base 1 through a screw and a pin, the inner diameter of the sleeve is matched with the diameters of the two mandrels in a D mode, and meanwhile, the side face of the sleeve is provided with two holes with different diameters in different sizes, and the holes are used for installing the two mandrels respectively. During welding, the welding bolt 10 penetrates through one hole in the side face of the sleeve support 5 and the welding mandrel 7, so that the welding mandrel 7 is positioned and fixed, and similarly, during inspection, the inspection bolt 9 penetrates through the other hole in the side face of the sleeve support 5 and the inspection mandrel 8, so that the inspection mandrel 8 is positioned and fixed.

Referring to fig. 4 to 7, the welding mandrel 7 and the inspection mandrel 8 have substantially the same structure, and both are used for positioning the joint by means of a positioning pin, the hole of the welding mandrel 7 corresponding to the position of the joint is made into a circular hole having a diameter d1, and the center position of the hole is shifted outward along the mandrel by half the welding shrinkage δ from the theoretical position. A hole of the mandrel 8 corresponding to the joint position is made into a long circular hole for inspection, the diameter of the semicircular part is d2, the distance a between the two semicircular centers of the long circular hole is the maximum tolerance allowed by welding the joint hole, and the diameter d2 is 0.2mm smaller than the diameter d1, so that the deformation caused by non-axial stress can be eliminated, whether the distance between the two axial joint center holes meets the requirement or not is detected, subsequent finish machining is facilitated to make adjustment, and the distance between the two joint holes after finish machining is ensured. This facilitates control of the relative positions of the two connector bores.

Different examples of the systems, devices, and methods disclosed herein include various components, features, and functions. It should be understood that the various examples of the systems, devices, and methods disclosed herein may include any of the components, features, and functions of any of the other examples of the systems, devices, and methods disclosed herein in any combination or any sub-combination, and all such possibilities are intended to fall within the scope of the present invention.

The description of the different advantageous arrangements has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the examples in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Additionally, the different advantageous examples may describe different advantages as compared to other advantageous examples. The example or examples selected are chosen and described in order to best explain the principles of the examples, the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various examples with various modifications as are suited to the particular use contemplated.

Claims

1. A production inspection device for joint welding is used for welding and inspecting joints at two ends of a rod pipe, and is characterized in that: the device main part includes base (1) and installs V type support (2) in the base middle part position, installs sleeve support (5) at the left and right sides symmetry of V type support (2), wherein

The upper end of the V-shaped support (2) is provided with a V-shaped groove for placing a rod pipe, the side surface of the V-shaped groove is also provided with an integrated screw (6), the movable pressing plate (3) is pressed at the upper end of the rod pipe, and the screw (6) penetrates through the movable pressing plate (3) and then is connected with the nut (4);

the top of the sleeve support (5) is provided with a sleeve for installing a welding mandrel (7) or an inspection mandrel (8), and during welding, a joint is supported by the welding mandrel (7) for welding and is positioned by a welding positioning pin (11); during the inspection, the joint is supported by an inspection mandrel (8) and is inspected by an inspection positioning pin.

2. The production inspection device of claim 1, wherein: the hole of the welding mandrel (7) corresponding to the joint position is made into a circular hole, the diameter of the circular hole is d1, and the center position of the circular hole is moved outwards along the mandrel relative to the theoretical position by half of the welding shrinkage delta.

3. The production inspection device of claim 2, wherein: the hole of the inspection mandrel (8) corresponding to the joint position is an oblong hole, the diameter of the semicircular part is d2, the distance a between two semicircular centers of the oblong hole is the maximum tolerance allowed by welding the joint hole, and d2 is 0.2mm smaller than d 1.

4. The production inspection device of claim 3, wherein: the sleeve is provided with a pin hole for welding and a pin hole (9) for inspection, which are different in size.

5. The production inspection device of claim 4, wherein: the welding mandrel (7) is fixed in the sleeve by a welding plug (10), and the inspection mandrel (8) is fixed in the sleeve by an inspection plug.

6. The production inspection device of claim 5, wherein: the movable pressing plate (3) is provided with a waist-shaped through hole.

7. The production inspection device of claim 5, wherein: and a U-shaped groove is also formed in the side surface of the V-shaped groove, and the screw rod (6) is vertically fixed in the U-shaped groove.