CN215444685U - Flange plate butt joint rapid positioning device with large bent pipe - Google Patents
Flange plate butt joint rapid positioning device with large bent pipe Download PDFInfo
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- CN215444685U CN215444685U CN202121966033.3U CN202121966033U CN215444685U CN 215444685 U CN215444685 U CN 215444685U CN 202121966033 U CN202121966033 U CN 202121966033U CN 215444685 U CN215444685 U CN 215444685U
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- locking block
- nut
- expansion locking
- flange
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Abstract
The utility model discloses a flange plate butt joint quick positioning device with a large bent pipe, which comprises a bolt and a nut, wherein the bolt is divided into an upper part, a middle part and a lower part from top to bottom, the middle part is in a circular truncated cone shape with a small upper part and a large lower part, and the nut is sleeved on the upper part in a penetrating way and is in threaded fit with the upper part; the upper part is also sleeved with an expansion locking block in a penetrating way, the expansion locking block is driven by a nut to move up and down on the screw rod, the bottom of the expansion locking block is divided into a plurality of split parts, when the expansion locking block moves down, the split parts can be spread, otherwise, the split parts are reset. The utility model provides a novel positioning device, which can realize quick positioning by simply rotating a nut inserted into a flange hole, can reversely rotate the nut when being taken down, does not need to withdraw the nut from a bolt, is simple to operate and saves more time. And dislocation cannot be formed during assembly, so that the welding accuracy is ensured. Because the contact area of the expansion locking block and the flange hole is small, the expansion locking block saves labor and can be screwed without auxiliary work. The end surfaces of the two flange plates after being welded are smooth, and leakage is not easy to generate.
Description
Technical Field
The utility model relates to a positioning device for a flange plate, in particular to a quick positioning device for butting of the flange plate with a large bent pipe.
Background
In the pipe fitting processing process, the situation that two flanges connected with large bent pipes need to be opposite and welded occasionally occurs, in the prior art, due to the shape and the structure of the large bent pipes, when the flanges of the two large bent pipes are butted, the gravity centers are not on the same straight line, the operation is difficult, and in order to align the hole positions of the flanges, an upper flange plate and a lower flange plate are generally used for drawing red or are connected by common bolts and nuts. This has the following problems:
positioning in a line drawing mode: after the flange plate is welded, the sealing surface is uneven and easy to leak.
The positioning is realized through the connection of common bolts and nuts: firstly, the efficiency is low, because the time is needed for connecting the bolt and the nut on the positioning hole, after the welding is finished, the nut and the bolt need to be separated, but the nut and the bolt are in threaded fit, and the screw can be taken out only after the nut is completely screwed out of the screw. Secondly, the gap between the screw and the flange hole is large, the flange hole is easy to form dislocation, and the accuracy in butt joint cannot be ensured.
The flange is a common part for connecting the end of the pipe fitting, and is mainly used for realizing the operations of connection, butt joint and the like of the end part of the pipe fitting. The flange plates are provided with flange holes, under the general condition, the flange holes are uniformly distributed near the edge of the flange plate, the positions of the flange plates of the same type are the same, and when the two flange plates with the same size are butted, the flange holes on the two flange plates are in one-to-one correspondence. One of the methods for positioning in the prior art is to use a common bolt and nut to pass through a set of positioning holes to realize positioning.
Disclosure of Invention
The utility model aims to provide a device for quickly positioning flange plate butt joint, which solves the problems, is smooth in sealing surface after welding, efficient and quick in welding, is not easy to misplace and is provided with a large bent pipe.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: a flange plate butt joint rapid positioning device with a large bent pipe is used for penetrating two flange holes on two butt joint flange plates and comprises a bolt and a nut;
the bolt comprises a vertically arranged screw rod positioned at the head of the bottom of the bolt, the screw rod is divided into an upper part, a middle part and a lower part from top to bottom, the upper part and the lower part are coaxially arranged in a cylindrical shape, the diameter of the upper part is smaller than that of the lower part, the diameter of the lower part is equal to the aperture of the flange hole, the middle part is in a truncated cone shape with a small upper part and a big lower part, and two ends are respectively butted with the upper part and the lower part and are integrally formed;
the nut is sleeved on the upper part in a penetrating way and is matched with the upper part through threads;
the upper part of the nut is also sleeved with an expansion locking block in a penetrating way, the expansion locking block is integrally cylindrical, the top of the expansion locking block is connected with the bottom of the nut, a through hole for a screw to pass through is arranged in the expansion locking block, the through hole is in a truncated cone shape with a small upper part and a big lower part, and the diameter of the minimum part of the through hole is larger than that of the upper part;
the sizes of the nut and the expansion locking block are smaller than those of the flange hole, and the nut and the expansion locking block can penetrate through the flange hole;
the bottom of the expansion locking block is provided with a plurality of vertical notches, the bottom of the expansion locking block is divided into a plurality of segments, when the nut drives the expansion locking block to move downwards, the segments can be unfolded by the middle part to be larger than the inner diameter of the flange hole in size, and when the nut drives the expansion locking block to move upwards, the segments can reset.
Preferably, the method comprises the following steps: the outer wall of the upper part of the expansion locking block is provided with an annular groove, and an O-shaped rubber ring is arranged in the annular groove.
Preferably, the method comprises the following steps: when the lower portion is positioned in one flange hole, the middle portion is positioned just in the other flange hole that is butted against the flange hole.
The using method of the utility model comprises the following steps: two flanges which need to be welded oppositely are arranged oppositely, for convenience of description, it is assumed that one of the flanges is located above, the other flange is located below, a flange hole in the flange above is an upper flange hole, and a flange hole in the flange above and below is a lower flange hole.
One of the flanges is rotated to enable the upper flange holes and the lower flange holes of the two flanges to be in one-to-one correspondence and opposite arrangement. The opposing upper and lower flange holes are in a set, and we insert the utility model into one set of holes.
The utility model is made to pass through a group of flange holes from bottom to top, the lower part is positioned in the lower flange hole, and the middle part is positioned in the upper flange hole. At the moment, the sizes of the nut and the expansion locking piece are smaller than those of the flange hole, and the nut and the expansion locking piece can easily penetrate through the flange hole.
When the locking location is needed, the rotating nut moves downwards to drive the expansion locking block to move downwards, the expansion locking block moves to the middle from the upper part, and the split of the expansion locking block is expanded along with the gradual increase of the size of the middle. Because the split can be strutted by the middle part to the size larger than the inner diameter of the flange hole, the split of the expansion locking block can be contacted with the inner wall of the upper flange hole along with the downward movement of the nut, and the split of the expansion locking block is contacted with the upper flange hole and locked along with the movement of the nut because the size of the upper flange hole cannot be changed. According to the utility model, the screw, the nut and the expansion locking block are coaxially arranged, so that the upper flange hole and the lower flange hole can be accurately aligned after the expansion locking block is expanded and tightly contacts with the upper flange hole. The dislocation of hole site of avoiding, and easy operation need not other instruments of assistance and carries out the counterpoint operation.
And welding the flange plate. After welding is finished, the nut needs to be taken down, the nut is rotated to move upwards, the expansion locking block is driven to move upwards, the expansion locking block returns to the upper part of the screw rod, and the split resetting is not carried out and is not contacted with the upper positioning hole. At this point, the present invention can be easily withdrawn from the flange hole.
Compared with the prior art, the utility model has the advantages that: 1. the method changes the prior art that the nut is simply rotated after being inserted into a flange hole by a line drawing positioning method or a common bolt and nut positioning method to realize quick positioning, and when the quick positioning device is taken down, the nut is reversely rotated without withdrawing the nut from the bolt, so that the operation is simpler and the time is saved. 2. Through screwing the nut, the expansion locking block moves up or down, and when the expansion locking block is completely connected with the flange holes, a group of butted flange holes are coaxial, so that dislocation is avoided, and the welding accuracy is ensured. 3. Because the contact area of the expansion locking block and the flange hole is small, the expansion locking block saves labor and can be screwed without auxiliary work. 4. The end surfaces of the two flange plates after being welded are smooth, and leakage is not easy to generate.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a flange with a large elbow when butted and without the utility model;
FIG. 3 is a schematic view of the area A of FIG. 2 in use with the present invention installed;
fig. 4 is a schematic structural diagram of the utility model in fig. 3 during locking.
In the figure: 1. a head portion; 2. a nut; 3. an upper portion; 4. a middle part; 5. a lower portion; 6. the locking block is expanded; 7. an O-shaped rubber ring; 8. a flange plate; 9. a flange hole; 10. a large bent pipe.
Detailed Description
The utility model will be further explained with reference to the drawings.
Example 1: referring to fig. 1 to 4, a flange plate butt joint quick positioning device with a large elbow is used for penetrating two flange holes 9 on two butt joint flange plates 8 and comprises a bolt and a nut 2;
the bolt comprises a vertically arranged screw rod and a head part 1 positioned at the bottom of the vertically arranged screw rod, the screw rod is divided into an upper part 3, a middle part 4 and a lower part 5 from top to bottom, the upper part 3 and the lower part 5 are coaxially arranged in a cylindrical shape, the diameter of the upper part 3 is smaller than that of the lower part 5, the diameter of the lower part 5 is equal to the aperture of a flange hole 9, the middle part 4 is in a circular truncated cone shape with a small upper part and a large lower part, and two ends are respectively butted with the upper part 3 and the lower part 5 and are integrally formed;
the nut 2 is sleeved on the upper part 3 in a penetrating way and is in threaded fit with the upper part 3;
the upper part 3 is also sleeved with an expansion locking block 6 in a penetrating manner, the expansion locking block 6 is integrally cylindrical, the top of the expansion locking block 6 is connected with the bottom of the nut 2, a through hole for a screw to pass through is formed in the expansion locking block, the through hole is in a circular truncated cone shape with a small upper part and a large lower part, and the diameter of the minimum part of the through hole is larger than that of the upper part 3;
the size of the nut 2 and the size of the expansion locking block 6 are both smaller than that of the flange hole 9, and the nut can penetrate through the flange hole 9;
the locking piece 6 bottom that expands is equipped with several vertical incisions, divide into several split with locking piece 6 bottom that expands, and when nut 2 drove locking piece 6 downstream, the split can be strutted to the size by middle part 4 and be greater than flange hole 9 internal diameter, and when nut 2 drove locking piece 6 upward movement, the split can reset.
The outer wall of the upper part 3 of the expansion locking block 6 is provided with an annular groove, and an O-shaped rubber ring 7 is arranged in the annular groove.
When the lower part 5 is located in one flange hole 9, the middle part 4 is located just in the other flange hole 9 which is in abutment with this flange hole 9.
When the welding device is used, the two flange plates 8 which need to be welded oppositely are placed oppositely, and the flange holes 9 on the two flange plates 8 are corresponding and opposite one to one when one of the flange plates 8 is rotated. The two opposite flange holes 9 are in a group and are inserted into the utility model.
The utility model is passed through a set of flange holes 9 from bottom to top as shown in figure 3. The diameter of the lower part 5 is equal to the diameter of the flange hole 9, so that the lower flange hole 9 is positioned after the lower part 5 passes through the flange hole 9 positioned below.
When locking is needed, the rotating nut 2 moves downwards to drive the expansion locking block 6 to move downwards, the expansion locking block 6 moves from the upper portion 3 to the middle portion 4, the split of the expansion locking block is expanded, and the expansion locking block is in contact with the inner wall of the flange hole 9 above the split and is locked. As shown in fig. 4, the positioning of the upper flange hole 9 is now achieved. In the utility model, the screw, the nut 2 and the expansion locking block 6 are coaxially arranged, so that after the expansion locking block 6 is expanded and closely contacts with the upper flange hole 9, the upper flange hole 9 and the lower flange hole 9 can be accurately aligned, and the dislocation of hole positions is avoided.
After welding, the rotating nut 2 moves upwards to drive the expansion locking block 6 to move upwards until the split reset, and the utility model is taken down. The O-shaped rubber ring 7 on the outer wall of the expansion locking block 6 can play a role in sealing and limiting.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. The utility model provides a take ring flange butt joint quick positioner of big return bend for pass two flange holes on the ring flange of two butt joints, including bolt and nut, its characterized in that:
the bolt comprises a vertically arranged screw rod positioned at the head of the bottom of the bolt, the screw rod is divided into an upper part, a middle part and a lower part from top to bottom, the upper part and the lower part are coaxially arranged in a cylindrical shape, the diameter of the upper part is smaller than that of the lower part, the diameter of the lower part is equal to the aperture of the flange hole, the middle part is in a truncated cone shape with a small upper part and a big lower part, and two ends are respectively butted with the upper part and the lower part and are integrally formed;
the nut is sleeved on the upper part in a penetrating way and is matched with the upper part through threads;
the upper part of the nut is also sleeved with an expansion locking block in a penetrating way, the expansion locking block is integrally cylindrical, the top of the expansion locking block is connected with the bottom of the nut, a through hole for a screw to pass through is arranged in the expansion locking block, the through hole is in a truncated cone shape with a small upper part and a big lower part, and the diameter of the minimum part of the through hole is larger than that of the upper part;
the sizes of the nut and the expansion locking block are smaller than those of the flange hole, and the nut and the expansion locking block can penetrate through the flange hole;
the bottom of the expansion locking block is provided with a plurality of vertical notches, the bottom of the expansion locking block is divided into a plurality of segments, when the nut drives the expansion locking block to move downwards, the segments can be unfolded by the middle part to be larger than the inner diameter of the flange hole in size, and when the nut drives the expansion locking block to move upwards, the segments can reset.
2. The flange plate butt joint quick positioning device with the large elbow pipe according to claim 1, characterized in that: the outer wall of the upper part of the expansion locking block is provided with an annular groove, and an O-shaped rubber ring is arranged in the annular groove.
3. The flange plate butt joint quick positioning device with the large elbow pipe according to claim 1, characterized in that: when the lower portion is positioned in one flange hole, the middle portion is positioned just in the other flange hole that is butted against the flange hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121966033.3U CN215444685U (en) | 2021-08-20 | 2021-08-20 | Flange plate butt joint rapid positioning device with large bent pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121966033.3U CN215444685U (en) | 2021-08-20 | 2021-08-20 | Flange plate butt joint rapid positioning device with large bent pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215444685U true CN215444685U (en) | 2022-01-07 |
Family
ID=79695393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121966033.3U Active CN215444685U (en) | 2021-08-20 | 2021-08-20 | Flange plate butt joint rapid positioning device with large bent pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215444685U (en) |
-
2021
- 2021-08-20 CN CN202121966033.3U patent/CN215444685U/en active Active
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