CN211361110U - Positioning and welding deformation preventing device convenient to disassemble and assemble and capable of guaranteeing coaxiality and spacing of holes - Google Patents
Positioning and welding deformation preventing device convenient to disassemble and assemble and capable of guaranteeing coaxiality and spacing of holes Download PDFInfo
- Publication number
- CN211361110U CN211361110U CN201922417391.8U CN201922417391U CN211361110U CN 211361110 U CN211361110 U CN 211361110U CN 201922417391 U CN201922417391 U CN 201922417391U CN 211361110 U CN211361110 U CN 211361110U
- Authority
- CN
- China
- Prior art keywords
- hole
- positioning
- nut
- positioning key
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Connection Of Plates (AREA)
Abstract
Just, location and anti-welding deformation device of assurance hole axiality and interval of dismouting relates to railway passenger train bogie system. In order to solve the problem of coaxiality deviation of two holes caused by welding deformation in the manufacturing process of the existing workpiece, a positioning and welding deformation preventing device which is convenient to disassemble and assemble and can ensure the coaxiality and the distance of the holes is provided; the bolt-nut combined device comprises a bolt, a positioning key A, a nut, a positioning key B, a bolt-nut combined device, a hole A and a hole B; a positioning key A is arranged at the end of the bolt; a positioning key B is arranged at the end of the nut; the bolt and the nut are connected through threads; the positioning key A and the positioning key B are respectively embedded into the hole A and the hole B. The positioning key B and the nut are of an integrated structure, the size of the positioning key and the length of the thread can be adjusted and matched according to the characteristics of a product, the applicability is high, the hole A and the hole B are coaxial, the product quality is guaranteed, the production efficiency is improved, and the bolt and nut combined device has the advantages of high positioning precision, convenience in operation, reliability in positioning, adjustable interval, convenience in disassembly and the like.
Description
Technical Field
The utility model relates to a railway vehicle bogie system, concretely relates to just, location and the anti-welding deformation device of assurance hole axiality and interval of dismouting.
Background
The bogie frame is used as a framework for mounting all parts of the bogie, the shape and position sizes of mounting holes for mounting the parts on the framework must meet the mounting requirements of the parts, and particularly, the coaxiality between the mounting holes must meet the design size tolerance requirement when some small-gap pin shafts are mounted. For the condition that the pin shaft mounting holes are distributed on two welded parts, the coaxiality requirement of the two holes is usually guaranteed by adopting a mode of welding and then integrally machining (drilling), but for some welded assemblies which are limited by structures and cannot realize integral machining, the mounting holes are required to be machined on the two parts respectively, and then the two parts are connected through a pairing and welding mode.
In the assembling process, two parts which are added in the mounting holes are positioned through a round pin, the coaxiality of the two holes is guaranteed, and then the round pin is pulled out after the two parts are positioned and welded so as to prevent the positioning pin shaft from being taken out after welding. And taking out the positioning pin shaft and then welding.
The prior art ensures the accuracy of pairing of two parts, but because of welding deformation, the change of the coaxiality of two holes cannot be controlled in the welding process, and certain deformation inevitably exists after welding to cause the deviation of the coaxiality of the holes.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a thereby solve in the current work piece manufacturing process because welding deformation leads to the problem of two hole axiality deviations, provide a just location and the welding deformation preventing device of the assurance hole axiality and interval of dismouting.
The positioning and welding deformation preventing device which is convenient to disassemble and assemble and ensures the coaxiality and the spacing of the holes comprises a bolt, a positioning key A, a nut, a positioning key B, a bolt and nut combination device, a hole A and a hole B; the bolt end is provided with a positioning key A; the nut end is provided with a positioning key B; the bolt and the nut are connected through threads;
and the positioning key A and the positioning key B are respectively embedded into the hole A and the hole B.
The bolt and the nut are completely coaxial, and the positioning key A and the positioning key B are assembled with the hole A and the hole B respectively in a matching mode, wherein the clearance is smaller than 0.5 mm.
At present, the assembly is mainly completed in the welding production of similar structures by adopting a round pin positioning mode, in the welding process, the relative position of two parts is ensured to be fixed in a welding process lacing wire mode, and the welding process lacing wire is polished to remove the process lacing wire. However, this solution causes damage to the surface of the part where the tie bar is located, and in mass production, the cost is increased due to the addition of the tie bar.
The utility model has the advantages that: in the just location and the welding deformation prevention device of the assurance hole axiality and the interval of dismouting, bolt and nut composite set has advantages such as positioning accuracy is high, the simple operation, the location is reliable, the interval is adjustable, convenient to detach. Through using bolt and nut composite set, can all guarantee hole A and hole B's axiality in group to reaching welding process, consequently not only effectively guarantee in the aspect of product quality, still promoted production efficiency simultaneously. The positioning key B and the nut 2 are of an integral structure, so that the disassembly difficulty after welding is greatly reduced; the size of the positioning key and the length of the thread can be adjusted and matched according to the characteristics of the product, and the applicability is high.
Drawings
FIG. 1A in FIG. 1 is a schematic view of a bolt in the device for positioning and preventing welding deformation, which is easy to disassemble and assemble, and ensures the coaxiality and the spacing of holes; fig. 1B is a schematic view of a nut in the device for positioning and preventing welding deformation, which is convenient for disassembly and assembly and ensures coaxiality and spacing of holes;
fig. 2 is a schematic diagram of the application in the positioning and welding deformation preventing device of the coaxiality and the interval of the guarantee hole of the easy dismounting.
In the figure: 1. 1-1 parts of bolt, 2-1 parts of positioning key A, 2 parts of nut, 2-1 parts of positioning key B, 3 parts of bolt and nut combined device, 4 parts of hole A, 5 parts of hole B.
Detailed Description
First embodiment, the first embodiment is described with reference to fig. 1 and 2, and a positioning and welding deformation preventing device which is easy to disassemble and assemble and ensures hole coaxiality and space comprises a bolt 1, a positioning key a1-1, a nut 2, a positioning key B2-1, a hole a4 and a hole B5; the positioning key A1-1 is arranged at the end of the bolt 1, and the positioning key B2-1 is arranged at the end of the nut 2; the bolt 1 and the nut 2 are connected through threads; the bond A1-1 and bond B2-1 are embedded in hole A4 and hole B5, respectively.
In the embodiment, the bolt 1 and the nut 2 are connected through threads, and the whole length of the combined device can be adjusted through rotating the threads, at the moment, the bolt 1 and the nut 2 which are connected through the threads are completely coaxial, so that the positioning key A1-1 and the positioning key B2-1 are also coaxial. In the process of assembling the workpieces, a positioning key A1-1 and a positioning key B2-1 are respectively embedded into a hole A4 and a hole B5 of two different parts, wherein the positioning key A1-1 and the positioning key B2-1 are respectively assembled with a hole A4 and a hole B5 in a small-gap fit mode, and the proper length is determined by rotating threads so as to meet the assembly size of the workpieces. When the workpieces are welded, the device is always arranged on the workpieces, so that the deformation of the two workpieces on two sides of a welding seam in the hole diameter direction and the welding shrinkage deformation in the hole axis direction are prevented. After the weld cools, the nut 2 is rotated so that the navigation key B2-1 is screwed through the hole B5 and the device is removed. In the welding process, the hole A4 and the hole B5 are connected into a whole by the bolt-nut combination device 3, so that the free deformation of the two holes is limited, and the coaxiality requirement can be accurately and reliably ensured. And after welding is finished and cooling is carried out, the rotating thread is adjusted, and the bolt 1 and the nut 2 are positioned and the welding deformation preventing device is detached. The positioning key B2-1 and the nut 2 are of an integral structure, so that the disassembly difficulty after welding is greatly reduced; the size of the positioning key and the length of the thread can be adjusted and matched according to the characteristics of the product, and the applicability is high.
Claims (3)
1. The positioning and welding deformation preventing device capable of guaranteeing the coaxiality and the distance of the holes and convenient to disassemble and assemble comprises a bolt (1) and a nut (2), wherein the bolt (1) is connected with the nut (2) through threads;
the method is characterized in that: the bolt is characterized by also comprising a positioning key A (1-1) arranged at the end of the bolt (1) and a positioning key B (2-1) arranged at the end of the nut (2); the sizes of the positioning key A (1-1) and the positioning key B (2-1) and the length of the threads can be adjusted and matched.
2. The easy-to-disassemble and assemble positioning and welding deformation preventing device for ensuring the coaxiality and the spacing of the holes as claimed in claim 1, wherein: the bolt (1) and the nut (2) are coaxial.
3. The easy-to-disassemble and assemble positioning and welding deformation preventing device for ensuring the coaxiality and the spacing of the holes as claimed in claim 1, wherein: and the positioning key A (1-1) and the positioning key B (2-1) are assembled with the hole A (4) and the hole B (5) respectively in a matching way with a clearance smaller than 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922417391.8U CN211361110U (en) | 2019-12-27 | 2019-12-27 | Positioning and welding deformation preventing device convenient to disassemble and assemble and capable of guaranteeing coaxiality and spacing of holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922417391.8U CN211361110U (en) | 2019-12-27 | 2019-12-27 | Positioning and welding deformation preventing device convenient to disassemble and assemble and capable of guaranteeing coaxiality and spacing of holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211361110U true CN211361110U (en) | 2020-08-28 |
Family
ID=72163755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922417391.8U Active CN211361110U (en) | 2019-12-27 | 2019-12-27 | Positioning and welding deformation preventing device convenient to disassemble and assemble and capable of guaranteeing coaxiality and spacing of holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211361110U (en) |
-
2019
- 2019-12-27 CN CN201922417391.8U patent/CN211361110U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8529179B2 (en) | Method of manufacturing a vehicular traction apparatus and a vehicular traction hook, and method of manufacturing a vehicular connecting member | |
| CN103521798A (en) | Expansion type adjustable core rod | |
| CN107116506B (en) | Disassembling tool for disassembling main shaft | |
| CN202129666U (en) | Flange spline expansion sleeve and flange machining craft equipment | |
| CN211361110U (en) | Positioning and welding deformation preventing device convenient to disassemble and assemble and capable of guaranteeing coaxiality and spacing of holes | |
| CN104999218A (en) | Welding positioner for auxiliary frame of electric car | |
| CN203282380U (en) | Spliced type base | |
| CN109483072B (en) | Welding method and tool for shield machine spiral machine seat | |
| CN201736075U (en) | Verifying device for verifying numerical control machining origin and tool dimension | |
| CN111015035A (en) | Positioning and welding deformation preventing device and method for ensuring hole coaxiality and space | |
| CN204727262U (en) | The connection structure of a kind of reel mandrel and oil cylinder piston axle | |
| CN103161370A (en) | Car door hinge locating pin component | |
| CN203141008U (en) | Switching device for fixing welding gun | |
| CN211102652U (en) | Locking mechanism | |
| CN203695977U (en) | Fixed center positioning device for numerical control underfloor wheel lathe | |
| CN202508190U (en) | Track replacer | |
| CN208565152U (en) | A kind of double fork-join header structures | |
| CN106984970B (en) | A kind of mechanical concentric parts with modular construction | |
| CN106346176B (en) | A kind of railway freight-car part assembles multipurpose positioning clamping device | |
| CN203830974U (en) | Tool structure for welding steel plates to outer wall of cylinder | |
| CN110842551A (en) | Locking mechanism and locking method | |
| CN104057229A (en) | Welding positioning fixture for banjo and anti-rotating pin | |
| CN103801887B (en) | Tool for welding steel plates onto outer wall of barrel and welding method thereof | |
| CN203076799U (en) | New structure of cylinder body mounting flange with boss excircle welded on cylinder barrel | |
| CN202825027U (en) | Continuous welding device of metal cylinder body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |