CN113560794A - Welding tool for backward inclined impeller of fan - Google Patents
Welding tool for backward inclined impeller of fan Download PDFInfo
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- CN113560794A CN113560794A CN202111002434.1A CN202111002434A CN113560794A CN 113560794 A CN113560794 A CN 113560794A CN 202111002434 A CN202111002434 A CN 202111002434A CN 113560794 A CN113560794 A CN 113560794A
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- impeller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a welding tool for a backward-inclined impeller of a fan, which comprises an impeller clamp mechanism and an impeller centering mechanism which are mutually independent, wherein the impeller clamp mechanism comprises a bottom plate, an impeller supporting ring arranged on the bottom plate, a plurality of pressing plates arranged above the bottom plate along the circumference, and a bearing ring arranged below the pressing plates; the pressing plate is arranged on the bottom plate through a strut and a first fastening bolt; the impeller supporting ring is abutted against the impeller rear disc, and the bearing ring is erected on the impeller front disc; the impeller centering mechanism comprises a front disc positioning disc erected on a front disc of the impeller, and a rear disc positioning disc arranged below the front disc positioning disc through a positioning mandrel, wherein the rear disc positioning disc is fixedly connected with a rear disc of the impeller. The impeller front disc and the impeller rear disc can be centered, welding spot welding operation is not needed in the impeller assembling process, and the working efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of welding of fan impellers, and particularly relates to a welding tool for a fan backward-inclined impeller.
Background
The back-tilted impeller is suitable for various large-scale equipment, such as: such as environmental testing machines, constant temperature and humidity machines, frozen food machines, packaging machines, etc., particularly in places where high efficiency and low noise are required, there is an increasing use of backward inclined impeller devices. While the latter impeller is to be of a quality assurance during assembly, a good fixture is extremely important to the accuracy of the weld and the quality of the fan impeller. The back-tilting impeller clamps on the current market generally have the following problems: 1) the centering measure is lacked, and the centering of the front disk and the rear disk of the impeller is difficult to ensure in the using process; 2) the impeller needs to be fixed by adopting a positioning welding spot during welding, but the defects of cracks, incomplete fusion and the like are easy to occur in the fixing process, the welding spot fixing operation is complex, the consumed time is long, and the assembly efficiency is low; 3) the current back-tilting impeller fixture cannot solve the problem that an impeller is easy to deform due to stress influence after welding.
Disclosure of Invention
The invention aims to overcome the defect that an impeller clamp in the prior art is lack of centering measures, and provides a welding tool for a backward inclined impeller of a fan.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a welding tool for a backward inclined impeller of a fan comprises an impeller clamp mechanism and an impeller centering mechanism which are arranged independently,
the impeller clamp mechanism comprises a bottom plate, an impeller supporting ring arranged on the bottom plate, a plurality of pressing plates arranged above the bottom plate along the circumference, and a bearing ring arranged below the pressing plates; the pressing plate is arranged on the bottom plate through a strut and a first fastening bolt; the impeller supporting ring is abutted against the impeller rear disc, and the bearing ring is erected on the impeller front disc;
the impeller centering mechanism comprises a front disc positioning disc erected on a front disc of the impeller, and a rear disc positioning disc arranged below the front disc positioning disc through a positioning mandrel, wherein the rear disc positioning disc is fixedly connected with a rear disc of the impeller.
Furthermore, a first through hole is formed in the bottom plate, a strip-shaped hole is formed in the position, corresponding to the through hole, of the pressing plate, and a compression nut is arranged after one end of the first fastening bolt penetrates through the first through hole and the strip-shaped hole;
the bottom of the strut is fixedly connected with the bottom plate, and the top of the strut is abutted against the pressure plate; or the top of the strut is fixedly connected with the pressure plate, and the bottom of the strut is abutted against the bottom plate.
Further, the impeller front disc comprises an annular transverse plate and an annular vertical plate which are connected through an arc angle, and the pressure bearing ring is arranged above the annular transverse plate;
the impeller rear disc comprises an annular top plate and an annular inclined plate which are integrally connected, and the rear disc positioning disc is arranged below the annular top plate and fixedly connected with the annular top plate through bolts; the support ring set up in the below of annular swash plate, and with the middle part butt of annular swash plate, the lower limb of annular swash plate with be provided with first clearance between the bottom plate.
Furthermore, the bottom of the outer ring wall of the front disc positioning disc is provided with an annular positioning groove, and the top of the annular vertical plate is arranged in the annular positioning groove and matched with the annular positioning groove.
Furthermore, the center of the impeller rear disc is provided with a shaft hole, one end of the rear disc positioning disc close to the impeller rear disc is provided with a positioning bulge, and the positioning bulge is inserted into the shaft hole and matched with the shaft hole.
Furthermore, a second through hole is formed in the center of the front plate positioning disc, a third through hole is formed in the center of the rear plate positioning disc, the positioning core shaft comprises a second fastening bolt which is inserted into the third through hole and fixedly connected with the third through hole, and a fastening nut is arranged behind the shaft hole and the second through hole and penetrates through the front end of the second fastening bolt.
Furthermore, a gasket is further sleeved on the second fastening bolt, and the gasket is arranged between the front disc positioning disc and the fastening nut.
Furthermore, the upper part of the third through hole is provided with an annular groove, so that a boss is formed on the side wall of the third through hole; the inner diameter of the gasket is smaller than that of the second through hole; a sleeve is sleeved outside the second fastening bolt, and two ends of the sleeve are respectively arranged in the second through hole and the third through hole; a second gap is arranged between the sleeve and the gasket and/or the boss;
furthermore, a plurality of universal balls are arranged on the front disc positioning disc and the rear disc positioning disc.
Furthermore, a plurality of inverted L-shaped centering blocks are arranged on the outer side wall of the pressure bearing ring along the circumference, and the outer wall of the annular transverse plate is abutted to the vertical parts of the inverted L-shaped centering blocks.
Compared with the prior art, the invention has the beneficial effects that:
the impeller centering mechanism comprises a front disc positioning disc, a positioning mandrel and a rear disc positioning disc, so that the impeller centering mechanism and the impeller clamp mechanism are arranged independently, the assembling operation of the impeller is simplified, and the assembling efficiency of the impeller is improved; according to the invention, the pressure-bearing ring is arranged below the pressure plate, and the fastening pressure is transmitted to the impeller through the pressure-bearing ring, so that the impeller is pressed and the stress is ensured to be uniform, the problem of welding deformation of the impeller is reduced, and the indentation generated on the impeller is avoided; the universal balls are arranged on the front disc positioning disc and the bottom plate, so that the welding tool can freely slide on the operating platform, and the welding operation is facilitated.
Drawings
FIG. 1 is a perspective view of one embodiment of the present invention (with a back-raked impeller);
FIG. 2 is a schematic structural view (with back-raked impeller) of one embodiment of the present invention;
FIG. 3 is a schematic structural view of one embodiment of the present invention (without the back-raked impeller);
FIG. 4 is a perspective view of a back-raked impeller in one embodiment of the present invention;
FIG. 5 is an exploded view of a back-raked impeller in one embodiment of the present invention;
FIG. 6 is a perspective view of an impeller centering mechanism in an embodiment of the present invention;
FIG. 7 is a perspective view of an impeller clamp mechanism in accordance with an embodiment of the present invention;
FIG. 8 is a schematic structural view of another embodiment of the present invention (with a back-raked impeller);
in the figure: 1. the impeller centering mechanism comprises an impeller clamp mechanism 2, an impeller centering mechanism 3, a bottom plate 4, a support ring 5, a pressure plate 6 and a pressure-bearing ring; 7. the device comprises a support column, 8, a first fastening bolt, 9, an impeller rear disc, 10, an impeller front disc, 11, a front disc positioning disc, 12, a blade, 13, a rear disc positioning disc, 14, a strip-shaped hole, 15, a compression nut, 16, an arc angle, 17, an annular transverse plate, 18, an annular vertical plate, 19, a sleeve, 20, an annular top plate, 21, an annular inclined plate, 22, a first gap, 23, an annular positioning groove, 24, a shaft hole, 25, a positioning bulge, 26, a third through hole, 27, a second fastening bolt, 28, a fastening nut, 29, a gasket, 30 and a boss; 31. a second gap; 32. universal ball 33, inverted L-shaped centering block 34, insertion block 35 and slot.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail with reference to the accompanying drawings.
The backward-inclined impeller shown in fig. 4-5 comprises an impeller front disk 10, an impeller rear disk 9, and a plurality of blades 12 uniformly arranged between the impeller front disk 10 and the impeller rear disk 9 along the circumference, wherein the front end and the rear end of each blade 12 are respectively provided with an insertion block 34, the impeller front disk 10 and the impeller rear disk 9 are provided with a slot 35, and the insertion blocks 34 are clamped with the corresponding slots 35;
further, the impeller front disc 10 comprises an annular transverse plate 17 and an annular vertical plate 18 which are connected through a circular arc angle 16; the impeller rear disc 9 comprises an annular top plate 20 and an annular inclined plate 21 which are integrally connected, and a shaft hole 24 is formed in the center of the impeller rear disc 9.
An embodiment of a welding tool for a backward inclined impeller of a fan, as shown in fig. 1-3 and 6-7, comprises an impeller clamping mechanism 1 and an impeller centering mechanism 2 which are arranged independently,
the impeller fixture mechanism 1 comprises a bottom plate 3, an impeller supporting ring 4 arranged on the bottom plate 3, a plurality of pressing plates 5 circumferentially arranged above the bottom plate 3, and a pressure-bearing ring 6 arranged below the pressing plates 5; the pressing plate 5 is arranged on the bottom plate 3 through a strut 7 and a first fastening bolt 8; the impeller supporting ring 4 is abutted against the impeller rear disc 9, and the pressure bearing ring 6 is erected on the impeller front disc 10;
the impeller centering mechanism 2 comprises a front disc positioning disc 11 erected on the impeller front disc 10, a rear disc positioning disc 13 arranged below the front disc positioning disc 11 through a positioning mandrel, and the rear disc positioning disc 13 is fixedly connected with the impeller rear disc 9. The impeller centering mechanism is composed of a front disc positioning disc 11, a positioning mandrel and a rear disc positioning disc 13, so that the impeller centering mechanism and the impeller clamp mechanism 1 are arranged independently, the assembling operation of the impeller is simplified, and the assembling efficiency of the impeller is improved. According to the invention, the pressure-bearing ring 6 is arranged below the pressure plate 5, and the fastening pressure is transmitted to the impeller through the pressure-bearing ring 6, so that the impeller is pressed and the stress is ensured to be uniform, the problem of welding deformation of the impeller is reduced, and the indentation on the impeller is avoided.
Furthermore, in the impeller centering mechanism 2 adopted by the invention, the connection surfaces of the front disk positioning disk 11 and the impeller front disk 10, the connection surfaces of the rear disk positioning disk 13 and the impeller rear disk 9 and the positioning mandrel can be machined in a machining mode, so that the connection precision is improved, and the centering effect is ensured.
As an embodiment of the welding tool for the backward inclined impeller of the fan, a first through hole is formed in the bottom plate 3, a strip-shaped hole 14 is formed in the position, corresponding to the through hole, of the pressing plate 5, and a compression nut 15 is arranged after one end of the first fastening bolt 8 penetrates through the first through hole and the strip-shaped hole 14;
the bottom of the strut 7 is fixedly connected with the bottom plate 3, and the top of the strut is abutted against the pressing plate 5; or the top of the strut 7 is fixedly connected with the pressing plate 5, and the bottom of the strut is abutted against the bottom plate 3. According to the invention, the front impeller disc 10 and the rear impeller disc 9 are restrained by the fastening bolts, and then the welding operation of the impeller is carried out, so that the welding spot tack welding operation is omitted, and compared with the traditional welding spot tack welding mode, the assembling is simpler and more convenient, and the effect is higher.
As an embodiment of the welding tool for the backward inclined impeller of the fan, the pressure-bearing ring 6 is arranged above the annular transverse plate 17;
the rear disc positioning disc 13 is arranged below the annular top plate 20 and fixedly connected with the annular top plate 20 through bolts; the support ring 4 is arranged below the annular inclined plate 21 and is abutted against the middle part of the annular inclined plate 21, and a first gap 22 is arranged between the lower edge of the annular inclined plate 21 and the bottom plate 3.
As an embodiment of the welding tool for the backward inclined impeller of the fan, an annular positioning groove 23 is formed in the bottom of the outer annular wall of the front disc positioning disc 11, and the top of the annular vertical plate 18 is arranged in the annular positioning groove 23 and matched with the annular positioning groove 23;
the center of impeller back plate 9 is provided with shaft hole 24, the one end that back plate positioning disk 13 is close to impeller back plate 9 is provided with location arch 25, location arch 25 insert locate in shaft hole 24, and with shaft hole 24 cooperatees.
As an embodiment of the welding fixture for the backward inclined impeller of the fan, a second through hole is formed in the center of the front disc positioning disc 11, a third through hole 26 is formed in the center of the rear disc positioning disc 13, the positioning mandrel comprises a second fastening bolt 27 inserted into the third through hole 26 and fixedly connected with the third through hole 26, and a fastening nut 28 is arranged after the front end of the second fastening bolt 27 penetrates through the shaft hole 24 and the second through hole.
Further, a gasket 29 is further sleeved on the second fastening bolt 27, and the gasket 29 is arranged between the front plate positioning plate 11 and the fastening nut 28.
Further, an annular groove is formed at the upper part of the third through hole 26, so that a boss 30 is formed on the side wall of the third through hole; the inner diameter of the spacer 29 is smaller than the inner diameter of the second through hole; a sleeve 19 is sleeved outside the second fastening bolt 27, and two ends of the sleeve 19 are respectively arranged in the second through hole and the third through hole 26; a second gap 31 is provided between the sleeve 19 and the spacer 29 and/or the boss 30.
As an embodiment of the welding tool for the backward inclined impeller of the fan, a plurality of universal balls 32 are arranged on both the front disc positioning disc 11 and the rear disc positioning disc 13. The universal balls 32 are arranged on the front disc positioning disc 11 and the bottom plate 3, so that the welding tool can freely slide on the operating platform, and the welding operation is facilitated.
As an embodiment of the welding tool for the backward inclined impeller of the fan according to the present invention, as shown in fig. 8, a plurality of inverted L-shaped centering blocks 33 are circumferentially disposed on an outer side wall of the pressure-bearing ring 6, and an outer wall of the annular horizontal plate 17 abuts against a vertical portion of the inverted L-shaped centering blocks 33. The L-shaped centering block ensures the centering of the pressure-bearing ring 6 and the front disc positioning disc 11, and avoids uneven stress and indentation of the impeller caused by the deflection of the pressure-bearing ring 6.
The use method of the invention comprises the following steps:
step 1, firstly inserting the bulge of the rear disc positioning disc 13 into the shaft hole 24 of the impeller rear disc 9, then fixing the impeller rear disc 9 and the rear disc positioning disc 13 through bolts, then inserting the insertion block 34 of the blade 12 into the slot 35 of the impeller rear disc 9 to realize the clamping connection of the blade 12 and the impeller rear disc 9, then inserting the sleeve 19 and the second fastening bolt 27 of the positioning mandrel into the third through hole 26 of the rear disc positioning disc 13, fixedly connecting the second fastening bolt 27 with the rear disc positioning disc 13, then clamping the top of the impeller front disc 10 into the annular positioning groove 23 at the edge of the front disc positioning disc 11, and then pre-fastening the front end of the second fastening bolt 27 through the front disc positioning disc 11 and the gasket 29 and then through the fastening nut 28,
step 2, adjusting the positions of the insertion blocks 34 of the blades 12 to be aligned with the slots 35 of the impeller front disc 10, and screwing the fastening nuts 28 to complete the assembly of the impeller, wherein the assembly efficiency is high, and the welding spot tack process of the blades 12 is not needed;
and 4, sliding the welding tool, and adjusting the welding angle to perform welding operation.
The embodiments described above are only preferred embodiments of the invention and are not exhaustive of the possible implementations of the invention. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the spirit and scope of the present invention.
Claims (10)
1. A welding tool for a backward inclined impeller of a fan is characterized by comprising an impeller clamp mechanism (1) and an impeller centering mechanism (2) which are arranged independently,
the impeller fixture mechanism (1) comprises a bottom plate (3), an impeller supporting ring (4) arranged on the bottom plate (3), a plurality of pressing plates (5) arranged above the bottom plate (3) along the circumference, and a bearing ring (6) arranged below the pressing plates (5); the pressing plate (5) is arranged on the bottom plate (3) through a strut (7) and a first fastening bolt (8); the impeller supporting ring (4) is abutted against an impeller rear disc (9), and the pressure bearing ring (6) is erected on the impeller front disc (10);
the impeller centering mechanism (2) comprises a front disc positioning disc (11) erected on the impeller front disc (10), a rear disc positioning disc (13) arranged below the front disc positioning disc (11) through a positioning mandrel, and the rear disc positioning disc (13) is fixedly connected with the impeller rear disc (9).
2. The welding tool for the backward inclined impeller of the fan as claimed in claim 1,
a first through hole is formed in the bottom plate (3), a strip-shaped hole (14) is formed in the position, corresponding to the through hole, of the pressing plate (5), and a compression nut (15) is arranged after one end of the first fastening bolt (8) penetrates through the first through hole and the strip-shaped hole (14);
the bottom of the strut (7) is fixedly connected with the bottom plate (3), and the top of the strut is abutted against the pressing plate (5); or the top of the strut (7) is fixedly connected with the pressure plate (5), and the bottom of the strut is abutted against the bottom plate (3).
3. The welding tool for the backward inclined impeller of the fan is characterized in that the front impeller disc (10) comprises an annular transverse plate (17) and an annular vertical plate (18) which are connected through an arc angle (16), and the pressure bearing ring (6) is arranged above the annular transverse plate (17);
the impeller rear disc (9) comprises an annular top plate (20) and an annular inclined plate (21) which are integrally connected, and the rear disc positioning disc (13) is arranged below the annular top plate (20) and fixedly connected with the annular top plate (20) through bolts; the support ring (4) set up in the below of annular swash plate (21), and with the middle part butt of annular swash plate (21), the lower limb of annular swash plate (21) with be provided with first clearance (22) between bottom plate (3).
4. The welding fixture for the backward inclined impeller of the fan as claimed in claim 3, wherein the bottom of the outer annular wall of the front disc positioning disc (11) is provided with an annular positioning groove (23), and the top of the annular vertical plate (18) is arranged in the annular positioning groove (23) and is matched with the annular positioning groove (23).
5. The welding tool for the backward inclined impeller of the fan as claimed in claim 3, wherein a shaft hole (24) is formed in the center of the impeller back plate (9), a positioning protrusion (25) is formed at one end, close to the impeller back plate (9), of the back plate positioning plate (13), and the positioning protrusion (25) is inserted into the shaft hole (24) and is matched with the shaft hole (24).
6. The welding tool for the backward inclined impeller of the fan as claimed in claim 1, wherein a second through hole is formed in the center of the front disc positioning disc (11), a third through hole (26) is formed in the center of the rear disc positioning disc (13), the positioning mandrel comprises a second fastening bolt (27) inserted into the third through hole (26) and fixedly connected with the third through hole (26), and a fastening nut (28) is arranged after the front end of the second fastening bolt (27) passes through the shaft hole (24) and the second through hole.
7. The welding tool for the backward inclined impeller of the fan as claimed in claim 6,
and a gasket (29) is further sleeved on the second fastening bolt (27), and the gasket (29) is arranged between the front disc positioning disc (11) and the fastening nut (28).
8. The welding tool for the backward inclined impeller of the fan as claimed in claim 7,
an annular groove is arranged at the upper part of the third through hole (26), so that a boss (30) is formed on the side wall of the third through hole; the inner diameter of the gasket (29) is smaller than that of the second through hole; a sleeve (19) is sleeved outside the second fastening bolt (27), and two ends of the sleeve (19) are respectively arranged in the second through hole and the third through hole (26); a second gap (31) is provided between the sleeve (19) and the spacer (29) and/or the boss (30).
9. The welding tool for the backward inclined impeller of the fan as claimed in claim 1, wherein a plurality of universal balls (32) are arranged on the front disc positioning disc (11) and the rear disc positioning disc (13).
10. The welding tool for the backward inclined impeller of the fan as claimed in claim 1, wherein a plurality of inverted L-shaped centering blocks (33) are circumferentially arranged on the outer side wall of the pressure bearing ring (6), and the outer wall of the annular transverse plate (17) abuts against the vertical portions of the inverted L-shaped centering blocks (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111002434.1A CN113560794A (en) | 2021-08-30 | 2021-08-30 | Welding tool for backward inclined impeller of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111002434.1A CN113560794A (en) | 2021-08-30 | 2021-08-30 | Welding tool for backward inclined impeller of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113560794A true CN113560794A (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111002434.1A Pending CN113560794A (en) | 2021-08-30 | 2021-08-30 | Welding tool for backward inclined impeller of fan |
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| Country | Link |
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| CN (1) | CN113560794A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114102028A (en) * | 2021-12-25 | 2022-03-01 | 常州凯度机电有限公司 | Welding tool for steam turbine partition plate |
| CN114346347A (en) * | 2022-03-04 | 2022-04-15 | 安徽机电职业技术学院 | Composite positioning device for high-temperature alloy brazing |
-
2021
- 2021-08-30 CN CN202111002434.1A patent/CN113560794A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114102028A (en) * | 2021-12-25 | 2022-03-01 | 常州凯度机电有限公司 | Welding tool for steam turbine partition plate |
| CN114346347A (en) * | 2022-03-04 | 2022-04-15 | 安徽机电职业技术学院 | Composite positioning device for high-temperature alloy brazing |
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