CN209943205U - Combined type strengthening rib of large-scale centrifugal fan casing - Google Patents
Combined type strengthening rib of large-scale centrifugal fan casing Download PDFInfo
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- CN209943205U CN209943205U CN201920829632.7U CN201920829632U CN209943205U CN 209943205 U CN209943205 U CN 209943205U CN 201920829632 U CN201920829632 U CN 201920829632U CN 209943205 U CN209943205 U CN 209943205U
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Abstract
The utility model belongs to the technical field of the strengthening rib, specifically say and relate to a combined type strengthening rib of large-scale centrifugal fan casing. The main technical scheme is as follows: the composite structure of the reinforcing rib comprises a plurality of first reinforcing ribs arranged in parallel and a plurality of second reinforcing ribs arranged in parallel at the same cross angle with the first reinforcing ribs, wherein the cross positions of the first reinforcing ribs and the second reinforcing ribs are connected through a mortise and tenon joint structure. The composite reinforcing rib has the characteristics of compact structural design, convenience in shaping and welding and good reinforcing effect.
Description
Technical Field
The utility model belongs to the technical field of the strengthening rib, specifically say and relate to a combined type strengthening rib of large-scale centrifugal fan casing.
Background
Large-scale industrial equipment, such as industrial centrifugal fan, its inside component part is numerous, and interconnect is complicated, and the outside cladding enclosure after the part is integrated. In order to improve the structural strength of the casing, reinforcing ribs are generally arranged on the surface of the casing, the reinforcing ribs of the existing centrifugal fan casing are blanked and welded on the surface of the casing by using band steel with specific specifications, the band steel is usually vertically welded for highlighting the three-dimensional reinforcing effect, and when the cross band steel is adopted for welding, the band steel needs to be cut, so that the workload is increased; a plurality of steel belts are welded in parallel, so that the steel belts cannot be parallel to each other, the reinforcing ribs of the shell are stressed unevenly, the crossed parts are lack of effective shaping, the structure is easy to loosen during integral welding, and the operation difficulty of personnel is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a structural design is compact, be convenient for design welding and strengthen effectual novel combined type strengthening rib.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a combined type strengthening rib of large-scale centrifugal fan casing which characterized in that: the reinforcing rib structure comprises a plurality of first reinforcing ribs arranged in parallel and a plurality of second reinforcing ribs arranged in parallel at the same cross angle with the first reinforcing ribs, wherein the cross positions of the first reinforcing ribs and the second reinforcing ribs are connected through a mortise and tenon structure.
The additional technical characteristics of the composite reinforcing rib forming the large centrifugal fan casing further comprise:
the first reinforcing rib and the second reinforcing rib are steel strips and form the tenon-and-mortise structure through vertical crossing, wherein the first reinforcing rib and the second reinforcing rib are respectively provided with mutually meshed slots at the crossing positions, and the bottom edges of the first reinforcing rib and the second reinforcing rib are welded on the surface of the centrifugal fan shell;
a reinforcing sleeve is arranged outside the mortise and tenon structure and comprises a central column, the central column is provided with an axial crossed groove body, and the crossed part of the first reinforcing rib and the second reinforcing rib is inserted into the crossed groove body;
the bottom surface of the central column is welded and fixed with the surface of the machine shell, the top end of the central column is provided with a plugging sheet, and the plugging sheet covers the intersection part of the first reinforcing rib and the second reinforcing rib and is fixed through welding;
the length of the central column is larger than the width of the crossed part of the first reinforcing rib and the second reinforcing rib, threads are arranged on the cylindrical surface of the exceeding part, and the bottom of the central column penetrates through a positioning hole in the surface of the shell and is screwed and fixed on the other side through a nut.
The utility model provides a combined type strengthening rib of large-scale centrifugal fan casing compares with prior art, has following advantage: the combined type reinforcing rib comprises a plurality of reinforcing ribs which are arranged in parallel, wherein the first reinforcing rib and the second reinforcing rib have crossed angles, and crossed parts are connected through a tenon-and-mortise structure, so that the prefabrication and shaping of the reinforcing ribs are facilitated, the step arrangement work during welding is reduced, and the working efficiency is improved; secondly, the tenon-and-mortise structure is formed by vertical crossing, and the first reinforcing rib and the second reinforcing rib are respectively provided with mutually meshed slots at the crossing part, so that the tenon-and-mortise structure has the advantages of compact structural design, firm crossing and convenience in processing and manufacturing; thirdly, because the crossed part of the first reinforcing rib and the second reinforcing rib adopts the tenon-and-mortise structure for shaping and the bottom edge is welded on the surface of the shell of the centrifugal fan, the strengthening effect is obviously improved compared with a single steel belt.
Drawings
FIG. 1 is a schematic view of the structure of one of the tenon and mortise components of the composite reinforcing rib of the present invention;
FIG. 2 is a perspective view of the assembled composite stiffener and housing;
fig. 3 is a cross-sectional view of the composite reinforcing bar.
Detailed Description
The structure and the working principle of the composite reinforcing rib of the large centrifugal fan casing provided by the present invention are further described in detail with reference to the accompanying drawings.
As shown in fig. 1, it is a schematic structural diagram of a composite reinforcing rib of a large centrifugal fan casing provided by the present invention. The composite structure of this combined type strengthening rib of constitution includes many first strengthening ribs 1 of parallel arrangement and with first strengthening rib 1 is many second strengthening ribs 2 that the same cross angle was arranged side by side, the intersection position of first strengthening rib 1 and second strengthening rib 2 passes through mortise and tenon joint structural connection.
The working principle is as follows: according to the production specification of the centrifugal fan shell, selecting proper reinforcing rib steel belts, arranging all the reinforcing rib steel belts into a first reinforcing rib 1 and a second reinforcing rib 2 which are mutually crossed, connecting and fixing the crossed parts through a mortise and tenon structure to form a composite integral structure of the reinforcing ribs, and then welding the reinforcing ribs on the surface of the shell A at one time.
In the structure of the composite reinforcing rib constituting the above-mentioned large centrifugal fan casing,
as a preferred embodiment, the first reinforcing rib 1 and the second reinforcing rib 2 are strips and form a tenon-and-mortise structure by vertical crossing, wherein the first reinforcing rib 1 and the second reinforcing rib 2 are respectively provided with slots 3 engaged with each other at crossing positions, and the bottom edges of the first reinforcing rib 1 and the second reinforcing rib 2 are welded on the surface of the casing a of the centrifugal fan.
In order to improve the processing efficiency, when the reinforcing rib steel belt is prefabricated, a laser cutting machine can be adopted for preparation, the reinforcing rib steel belt is cut into strips according to the length, a plurality of slots 3 are formed in one side of the steel belt, and the slots of the steel belt of the first reinforcing rib 1 and the slots 3 of the steel belt of the second reinforcing rib 2 are mutually meshed to form the mortise and tenon joint structure;
as shown in fig. 2, in order to further enhance the shaping of the reinforcing ribs, a reinforcing sleeve is arranged outside the mortise and tenon structure, the reinforcing sleeve includes a central column 41, the central column 41 has an axial cross groove body, the cross position of the first reinforcing rib 1 and the second reinforcing rib 2 is inserted into the cross groove body, and the cross groove body can effectively position the cross position, so that the mortise and tenon structure is more firm and is convenient for welding operation;
preferably, the bottom surface of the central column 41 is welded and fixed with the surface of the machine shell a, the top end of the central column 41 is provided with a blocking piece 42, and the blocking piece 42 covers the intersection position of the first reinforcing rib 1 and the second reinforcing rib 2 and is fixed by welding, so that the three-dimensional reinforcing effect can be further enhanced, and the effective service life of the reinforcing ribs can be prolonged;
as shown in fig. 3, the length of the central column 41 is greater than the width of the intersection of the first reinforcing rib 1 and the second reinforcing rib 2, and the thread is arranged on the cylindrical surface of the excess part, and the bottom of the central column 41 penetrates through the positioning hole formed in the surface of the machine shell and is screwed and fixed on the other side through the nut 43, so that the combination degree of the reinforcing rib composite structure and the machine shell a is increased, and the reinforcing rib composite structure is suitable for assembling large-scale machine shells.
Claims (5)
1. The utility model provides a combined type strengthening rib of large-scale centrifugal fan casing which characterized in that: the reinforcing rib structure comprises a plurality of first reinforcing ribs arranged in parallel and a plurality of second reinforcing ribs arranged in parallel at the same cross angle with the first reinforcing ribs, wherein the cross positions of the first reinforcing ribs and the second reinforcing ribs are connected through a mortise and tenon structure.
2. The composite reinforcing rib of the large centrifugal fan casing according to claim 1, wherein: the first reinforcing rib and the second reinforcing rib are steel strips and are formed in a vertical crossing mode to form the tenon-and-mortise structure, wherein the first reinforcing rib and the second reinforcing rib are respectively provided with slots which are mutually meshed at crossing positions, and the bottom edges of the first reinforcing rib and the second reinforcing rib are welded on the surface of a centrifugal fan shell.
3. The composite reinforcing rib of the large centrifugal fan casing according to claim 2, wherein: the outer portion of the mortise structure is provided with a reinforcing sleeve, the reinforcing sleeve comprises a central column, the central column is provided with an axial cross groove body, and the cross position of the first reinforcing rib and the second reinforcing rib is inserted into the cross groove body.
4. The composite reinforcing rib of the large centrifugal fan casing according to claim 3, wherein: the bottom surface of the central column is welded and fixed with the surface of the machine shell, the top end of the central column is provided with a plugging sheet, and the plugging sheet covers the intersection part of the first reinforcing rib and the second reinforcing rib and is fixed through welding.
5. The composite reinforcing rib of the large centrifugal fan casing according to claim 3, wherein: the length of the central column is larger than the width of the crossed part of the first reinforcing rib and the second reinforcing rib, threads are arranged on the cylindrical surface of the exceeding part, and the bottom of the central column penetrates through a positioning hole in the surface of the shell and is screwed and fixed on the other side through a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920829632.7U CN209943205U (en) | 2019-06-04 | 2019-06-04 | Combined type strengthening rib of large-scale centrifugal fan casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920829632.7U CN209943205U (en) | 2019-06-04 | 2019-06-04 | Combined type strengthening rib of large-scale centrifugal fan casing |
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| CN209943205U true CN209943205U (en) | 2020-01-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721227A (en) * | 2020-12-18 | 2021-04-30 | 天津市宝洪源机械制造有限公司 | Processing and manufacturing process of engine cabin cover of ship body |
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2019
- 2019-06-04 CN CN201920829632.7U patent/CN209943205U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721227A (en) * | 2020-12-18 | 2021-04-30 | 天津市宝洪源机械制造有限公司 | Processing and manufacturing process of engine cabin cover of ship body |
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