CN212452742U - Embedded part for large-scale unit - Google Patents
Embedded part for large-scale unit Download PDFInfo
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- CN212452742U CN212452742U CN202020704027.XU CN202020704027U CN212452742U CN 212452742 U CN212452742 U CN 212452742U CN 202020704027 U CN202020704027 U CN 202020704027U CN 212452742 U CN212452742 U CN 212452742U
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Abstract
The utility model relates to the technical field of engineering, especially a large-scale built-in fitting for unit, include the backup pad group, be vertical lower part landing leg, fixed plate and the position control mechanism of arranging, the lower part landing leg sets up the bottom of backup pad group, the fixed plate passes through the position control mechanism and installs the top of backup pad group, on the fixed plate, in the backup pad group, or between fixed plate and the backup pad group, secondary grout passageway has. The utility model discloses a position control mechanism installs the fixed plate the top of supporting plate group, after once being in milk, before the secondary grout, utilize position control mechanism, accurate regulation the elevation and the position of fixed plate effectively avoid causing serious reworking accident because the construction precision is low.
Description
Technical Field
The utility model relates to the technical field of engineering, especially a large-scale built-in fitting for unit.
Background
The embedded part for the large-scale unit is an important stressed component for installing and fixing unit equipment and the like, requires large bearing capacity, and particularly ensures reliable operation in high-intensity earthquake areas. Therefore, the requirement on installation of the embedded part is high, and concrete foundation construction is complicated due to influence factors, so that once the installation error of the embedded part is too large, high rework cost is caused and the construction period is prolonged. In particular, in the installation construction of the steam turbine generator, a bearing seat key embedded part of the steam turbine generator unit is used. The steel structure is poured in a concrete foundation, a steel plate is exposed on the surface of the foundation, the steel structure is used for welding a guide key at the bottom of a bearing seat, the steel structure has the functions of guiding the thermal expansion of a unit, limiting the freedom degree of the bearing seat, bearing the load of the unit and transmitting the load to the foundation, and the safe operation of the unit is ensured.
As shown in fig. 1, the structure of a conventional embedded part is schematically illustrated, and the structure of the embedded part is composed of a steel plate 1 ' and a plurality of support legs 2 ' welded at the bottom of the steel plate and having fixed lengths, and a bearing block key (not labeled in the figure) is welded on the upper surface of the steel plate 1 ' and is used for mounting and supporting a steam turbine set. During construction, the graphic embedded part is fixed at the position where the surface of the foundation is connected with the equipment through a scaffold or other temporary steel frames, and then concrete is poured. Because of the concrete need fill pour in the below of steel sheet 1', the condition is complicated in this work progress, receives the manufacturing error influence, if basic form bearing warp, the concrete placement strikes, and the reinforcing bar is drawn together, and the concrete vibrates improperly, reasons such as uneven settlement, all can lead to steel sheet position deviation to reduce built-in fitting installation accuracy, cause the quality accident that unit equipment can not install, and repair cost is very high, will cause scrapping of whole equipment foundation when serious.
On the other hand, the construction error of the flat embedded part with the unadjustable elevation can be controlled within 20mm, each bearing seat key is fixed on the steel plate 1', and the installation accuracy of the embedded part determines the installation accuracy of the bearing seat key. At present, the capacity of a steam turbine set is increasingly large, the requirement on safe operation is increasingly high, the precision of a bearing seat key is generally required to be about 0.05mm, the bearing seat key is also required to be suitable for adjustment of the raising degree of a steam turbine shaft system, and the existing embedded part structure cannot meet various harsh installation requirements.
In addition, because the load of the current large-scale steam turbine generator unit is large, the requirement on the operation reliability is high, particularly in a 9-level high-intensity earthquake area, if an embedded part is not subjected to comprehensive, mature and reliable design analysis, the embedded part is designed by simple calculation or even experience, and hidden dangers are brought to the safe operation of the unit.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes above-mentioned shortcoming provides a built-in fitting for large-scale unit that construction precision is high, anti-seismic performance is superior.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a large-scale built-in fitting for unit, includes supporting plate group, is vertical lower part landing leg, fixed plate and the position adjustment mechanism of arranging, the lower part landing leg sets up the bottom of supporting plate group, the fixed plate passes through the position adjustment mechanism to be installed the top of supporting plate group, secondary grout passageway has on the fixed plate, in the supporting plate group, or between fixed plate and the supporting plate group.
Further, the adjusting mechanism may include a set of jack screws, and the jack screws are arranged perpendicular to the fixing plate and engaged with the fixing plate.
Further, the secondary grouting channel may be a secondary grouting hole formed in the fixing plate.
Furthermore, the support plate group can comprise a transverse shear plate, a longitudinal shear plate and an anti-overturning bottom plate which are welded and fixed into a whole, wherein the transverse shear plate and the longitudinal shear plate are vertically arranged and are perpendicular to each other, and the anti-overturning bottom plate is horizontally arranged.
Further, the lower leg may be a variable length leg.
Further, the lower supporting leg can comprise a supporting leg and an adjustable sleeve, wherein the adjustable sleeve is fixed at the bottom of the supporting plate group and is sleeved on the top end of the supporting leg.
Furthermore, a bearing seat key can be welded and fixed on the fixing plate.
Furthermore, the support plate assembly can also comprise a plurality of horizontally arranged lateral support legs, and the lateral support legs are welded and fixed with the support plate assembly.
Furthermore, the transverse shear resisting plate or/and the longitudinal shear resisting plate can be provided with steel bar through holes.
The number of the jackscrews can be four, and the jackscrews are respectively arranged corresponding to the four vertex angles of the fixing plate.
The utility model discloses a position control mechanism installs the fixed plate the top of backup pad group, after once grouting, before the secondary grout, utilize position control mechanism, accurate regulation the elevation and the position of fixed plate recycle secondary grout passageway and carry out the secondary grout, and further fixed and perfect the intensity of pouring of fixed plate, consequently, utilize the utility model discloses, allow 20mm error behind the basic watering, can again be after once grouting, with position control mechanism adjustment key fixed plate, satisfy bearing seat key 0.05mm error requirement, pour the installation requirement low, can effectively avoid again because the construction precision is low and cause serious rework accident. In addition, the supporting plate groups are welded and fixed into a whole transverse shear resisting plate, a whole longitudinal shear resisting plate and a whole overturn resisting bottom plate, can bear the transverse shear force of an earthquake and the overturn force of a unit, are designed according to AISC 360 LRFD (American Steel structural design Specification: load and resistance coefficient design method), meet the safety requirement of the unit under the earthquake of level 9, and are compact in structure, small in size, strong in bearing capacity and convenient for basic construction.
Drawings
FIG. 1 is a schematic structural diagram of a conventional embedment;
FIG. 2 is a schematic structural diagram of a preferred embodiment of the present invention;
fig. 3 is an installation diagram of the preferred embodiment of the present invention.
Wherein:
1-a fixed plate, 2-a jackscrew, 3-a secondary grouting hole,
4-longitudinal shear resisting plate, 5-transverse shear resisting plate, 6-steel bar punching,
7-anti-overturning bottom plate, 8-adjustable sleeve, 9-supporting leg,
10-lateral supporting leg, 11-bearing seat key, 12-foundation steel bar,
13-concrete, 14-secondary grouting, 15-locking knob.
Detailed Description
The utility model discloses a large-scale built-in fitting for unit.
As shown in fig. 1, for the utility model relates to a preferred embodiment, include the supporting plate group that comprises vertical shear plate 4, horizontal shear plate 5, anti upset bottom plate 7, be the lower part landing leg of vertical arrangement, be the side direction landing leg 10 that the level was arranged, fixed plate 1 and position control mechanism, the lower part landing leg sets up the bottom of supporting plate group, fixed plate 1 is installed through position control mechanism the top of supporting plate group, side direction landing leg 10 with supporting plate group welded fastening, be provided with secondary grout hole 3 on the fixed plate 1. In addition, a secondary grouting channel can be arranged in the supporting plate group or between the fixing plate and the supporting plate group. In order to install the bottom foot of the large-scale unit, corresponding components can be welded according to actual requirements, for example, a steam turbine is taken as an example, and a bearing seat key 11 is welded and fixed on the fixing plate 1.
The supporting plate group is formed by mutually welding and fixing a transverse shear resistant plate 5, a longitudinal shear resistant plate 4 and an anti-overturning bottom plate 7 into a whole, and the transverse shear resistant plate 5 and the longitudinal shear resistant plate 4 are vertically arranged and mutually perpendicular and are used for bearing the shearing force in two horizontal directions caused by an earthquake. The anti-overturning bottom plate 7 is horizontally arranged and used for bearing overturning force of the unit, and when the unit encounters strong overturning moment caused by strong earthquake, the embedded part is prevented from being pulled out of the foundation, so that the anti-overturning device is safe and effective to the unit.
The adjusting mechanism comprises a group of jackscrews 2, the jackscrews 2 are perpendicular to four arranged fixing plates 1, are respectively arranged corresponding to four vertex angles of the fixing plates, and are meshed with the fixing plates 1. The jackscrew 2 is used for the elevation of accurate adjustment fixed plate 1, and after once the grout solidifies, through twisting four jackscrews 2 respectively soon and carrying out the accurate adjustment to after the adjustment with fixed plate 1 with vertical shear resisting board 4, horizontal shear resisting board 5 welded fastening, the rethread secondary grout hole 3 is with the grout of fixed plate 1 bottom space. In order to accurately adjust the horizontal position of the fixing plate 1, a plurality of horizontally arranged jackscrews (not marked in the figure) can be arranged and can penetrate through the longitudinal shear resisting plate 4 and the transverse shear resisting plate 5, and the accurate adjustment in the horizontal direction is realized by screwing the jackscrews 2 and tightly jacking the fixing plate. In addition, can adopt other various position control mechanism such as wedge cushion according to actual conditions, realize backup pad 1's fine setting has reduced built-in fitting installation requirement promptly, allows the back 20mm error of basic watering, again can be after the watering, accurate adjustment the position of fixed plate 1 satisfies fixed plate and bearing seat key 0.05mm error requirement.
The lower part landing leg is the variable length landing leg, and in this embodiment, including supporting leg 9 and adjustable sleeve 8, adjustable sleeve 8 with the bottom of supporting plate group is fixed, and the suit is in the supporting leg 9 top. The adjustable sleeve 8 is provided with a locking knob 15, when the locking knob 15 is loosened, the supporting leg 9 moves up and down in the adjustable sleeve 8 to adjust the length of the supporting leg, when the locking knob 15 is screwed to a proper position, the position of the supporting leg is locked, and the length of the whole lower supporting leg is also locked. Therefore, the supporting legs with variable lengths are adopted, the elevation can be adjusted according to actual conditions, the bottom feet of the supporting legs at the lower parts can be directly fixed on the concrete formwork, construction is facilitated, and installation time is saved. The embodiment also comprises a plurality of lateral supporting legs 10 which are horizontally arranged, and the lateral supporting legs are welded and fixed with the supporting plate group, are designed into fixed lengths or variable lengths according to actual needs, and can realize the fixation of embedded parts in the horizontal direction.
And a plurality of steel bar through holes 6 are formed in the transverse shear resisting plate 5. When in construction, the foundation steel bars 12 penetrate through the steel bar through holes 6, so that the whole embedded part does not block the laying of the steel bars, and the embedded part can be fully combined with the steel bars and the concrete, thereby being more beneficial to dispersing the stress of the embedded part in the foundation and improving the strength of the whole foundation. According to the actual laying needs of the foundation steel bars 12, steel bar perforations (not shown) can be arranged on the longitudinal shear plates 4, or the transverse shear plates 5 and the longitudinal shear plates 4 can be simultaneously and alternately arranged.
Based on the structure, utilize the utility model discloses realize that the installation step as follows:
firstly, welding a longitudinal shear resisting plate 4, a transverse shear resisting plate 5, an anti-overturning bottom plate 7, an adjustable leg sleeve 8 and a lateral leg 10 into a whole, and placing an embedded part in place primarily after a supporting leg 9 is installed in the adjustable leg sleeve 8. At this time, the fixed plate 1 is not mounted.
Secondly, the height of the embedded part is accurately adjusted by using the lower supporting legs with adjustable lengths, and then the supporting legs 9 and the lateral supporting legs 10 are fixed with the foundation formwork by bolts.
Thirdly, laying foundation steel bars 12, and enabling the foundation steel bars 12 to penetrate through the steel bar through holes 6 without blocking the reserved positions of the fixing plates 1.
And fourthly, reserving the space of the subsequent secondary grouting 14 and pouring the concrete 13. The concrete 13 is then maintained until it sets.
And fifthly, supporting the top surface of the solidified concrete 13 by using a jackscrew 2 according to the position of the bearing seat key 11, and accurately adjusting the elevation of the fixing plate 1. And (3) welding and fixing the fixed plate 1 with the peripheral longitudinal shear resisting plates 4 and the peripheral transverse shear resisting plates 5. And then the secondary grouting 14 is injected through the secondary grouting hole 3.
And sixthly, welding and fixing the bearing seat key 11 and the fixing plate 1.
The embedded part for the large-scale unit provided by the utility model is described in detail above, and the principle and the implementation mode of the utility model are explained by applying a specific example, and the description of the above embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (10)
1. The utility model provides an embedded part for large-scale unit which characterized in that: the novel grouting support comprises a support plate group, lower support legs which are vertically arranged, a fixing plate and a position adjusting mechanism, wherein the lower support legs are arranged at the bottom of the support plate group, the fixing plate is arranged above the support plate group through the position adjusting mechanism, and a secondary grouting channel is arranged on the fixing plate, in the support plate group or between the fixing plate and the support plate group.
2. The embedded part for the large-scale unit according to claim 1, wherein: the supporting plate group comprises a transverse shear resisting plate, a longitudinal shear resisting plate and an anti-overturning bottom plate which are welded and fixed into a whole, wherein the transverse shear resisting plate and the longitudinal shear resisting plate are vertically arranged and are perpendicular to each other, and the anti-overturning bottom plate is horizontally arranged.
3. The embedded part for the large-scale unit according to claim 2, wherein: and reinforcing steel bar through holes are arranged on the transverse shear resisting plate or/and the longitudinal shear resisting plate.
4. The embedded part for the large-scale unit according to claim 1, wherein: the lower leg is a variable length leg.
5. The embedded part for the large-scale unit according to claim 4, wherein: the lower supporting leg comprises a supporting leg and an adjustable sleeve, and the adjustable sleeve is fixed with the bottom of the supporting plate group and sleeved at the top end of the supporting leg.
6. The embedded part for the large-scale unit according to claim 1, wherein: the support plate assembly is characterized by further comprising a plurality of lateral support legs which are horizontally arranged, and the lateral support legs and the support plate assembly are welded and fixed.
7. The embedded part for the large-scale unit according to any one of claims 1 to 6, wherein: the adjusting mechanism comprises a group of jackscrews, and the jackscrews are vertical to the fixing plates and are meshed with the fixing plates.
8. The embedded part for the large-scale unit according to any one of claims 1 to 6, wherein: the secondary grouting channel is a secondary grouting hole formed in the fixing plate.
9. The embedded part for the large-scale unit according to any one of claims 1 to 6, wherein: and a bearing seat key is fixedly welded on the fixed plate.
10. The embedded part for the large-scale unit according to claim 7, wherein: the number of the jackscrews is four, and the jackscrews are respectively arranged corresponding to the four vertex angles of the fixing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020704027.XU CN212452742U (en) | 2020-04-30 | 2020-04-30 | Embedded part for large-scale unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020704027.XU CN212452742U (en) | 2020-04-30 | 2020-04-30 | Embedded part for large-scale unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212452742U true CN212452742U (en) | 2021-02-02 |
Family
ID=74463641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020704027.XU Active CN212452742U (en) | 2020-04-30 | 2020-04-30 | Embedded part for large-scale unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212452742U (en) |
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2020
- 2020-04-30 CN CN202020704027.XU patent/CN212452742U/en active Active
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