CN111889981B - Method for manufacturing waist-shaped hole of sliding support base plate of deaerator of power station - Google Patents
Method for manufacturing waist-shaped hole of sliding support base plate of deaerator of power station Download PDFInfo
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- CN111889981B CN111889981B CN202010776513.7A CN202010776513A CN111889981B CN 111889981 B CN111889981 B CN 111889981B CN 202010776513 A CN202010776513 A CN 202010776513A CN 111889981 B CN111889981 B CN 111889981B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
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Abstract
The invention provides a method for manufacturing a waist-shaped hole of a bottom plate of a sliding support of a deaerator of a power station, and belongs to the technical field of design and manufacture of sliding supports of large horizontal pressure-bearing equipment. The invention discloses a method for respectively carrying out numerical control gas cutting blanking on a base plate and a foundation plate, which comprises the following steps of forming a waist-shaped hole of the numerical control gas cutting base plate: leveling the correcting bottom plate and the foundation plate; the bottom plate, the vertical plate and the rib plate are welded into a support assembly; leveling the correcting bottom plate; the support assembly is laid down to the plane of the bottom plate and is fixed at a vertical position; the surface machining of the machine-added base plate machine comprises a plane on one side, opposite to the base plate, of the single machine-added base plate; buckling, clamping and fixing the added surface of the base plate machine and the added surface of the base plate machine, determining the circle center or marking the position line of the concentric circular hole on the base plate according to the position of the waist-shaped hole of the base plate, and then carrying out pairing marking and disassembling; drilling a circular hole of the foundation plate; when the base plate is installed in a construction site, the base plate and the foundation plate are installed according to the pairing marks. The invention changes the surface machining of the waist-shaped hole group into a numerical control gas cutting surface, and changes the independent machining of the waist-shaped hole group and the circular hole group of the foundation plate into the matched machining.
Description
Technical Field
The invention relates to a method for manufacturing a waist-shaped hole of a base plate of a sliding support of a deaerator of a power station, belonging to the technical field of design and manufacture of sliding supports of large horizontal pressure-bearing equipment.
Background
For a long time, the deaerator of the power station is taken as a large horizontal pressure vessel, and the saddle type support comprises a sliding support and a fixed support. As shown in fig. 1 and 2, the vertical plate 5 is perpendicular to the sliding support base plate 1, the bottom edge of the vertical plate 5 is welded and fixed with the sliding support base plate 1, the vertical plate 5 is arranged in the middle of the sliding support base plate 1 and has the same length as the sliding support base plate 1, the plurality of rib plates 6 are perpendicular to the vertical plate 5, the bottom edges of the rib plates 6 are welded and fixed with the sliding support base plate 1, and the length of the rib plates 6 is the same as the width of the sliding support base plate 1. The waist-shaped hole group of the sliding support base plate is always processed by a numerical control boring and milling machine after the sliding support is assembled and welded and the base plate is planed, and the circular hole group of the sliding support base plate matched with the sliding support base plate is processed by a drilling machine, so that the problems that the requirement on the roughness of the waist-shaped hole is high, the machining cost is high, the production efficiency is low, the size deviation is large due to the lack of matched drilling of the two plate hole groups and the like exist.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and further provides a method for manufacturing a waist-shaped hole in a bottom plate of a sliding support of a deaerator in a power station.
The purpose of the invention is realized by the following technical scheme:
a method for manufacturing a waist-shaped hole in a sliding support base plate of a deaerator in a power station comprises the following steps:
the method comprises the following steps: sliding support bottom plate and sliding support foundatin plate numerical control gas cutting unloading respectively, including numerical control gas cutting sliding support bottom plate waist shape hole shaping:
step two: leveling a flame or mechanical straightening sliding support base plate and a sliding support foundation plate;
step three: the sliding support base plate, the vertical plate and the rib plate are welded into a support assembly;
step four: leveling a bottom plate of the flame or mechanical straightening sliding support;
step five: the support component is laid down on a workbench of the numerical control boring and milling machine until the plane of the bottom plate of the sliding support is fixed at a vertical position;
step six: the machining surface of the machining sliding support base plate machine comprises a plane on one side, opposite to the sliding support base plate, of a single machining sliding support base plate;
step seven: clamping and fixing the added surface of the sliding support base plate machine and the added surface of the sliding support base plate machine, determining the circle center or marking the position line of the concentric circular holes on the sliding support base plate according to the position of the waist-shaped hole of the sliding support base plate, and then carrying out pairing marking and dismantling;
step eight: drilling a circular hole of a foundation plate of the sliding support by adopting a radial drilling machine;
step nine: during construction site installation, the sliding support base plate and the sliding support foundation plate are installed according to the pairing mark.
The shape and the waist-shaped hole of the bottom plate of the sliding support are processed by adopting a numerical control flame cutting method.
Round holes in the sliding support base plate are placed below the sliding support base plate at the sliding support base plate and are clamped and fixed and corrected, round hole lines are drawn, the marks are matched, and the holes are disassembled and drilled by taking the waist-shaped holes of the sliding support base plate as a reference, so that the waist-shaped holes and the corresponding round holes are concentric.
The roughness of the round hole on the sliding support base plate is Ra12.5 mu m, the waist-shaped hole of the sliding support base plate is cut by flame, and the roughness is Ra 25-50 mu m.
The invention has the beneficial effects that:
1. the roughness of the waist-shaped hole is reduced, the production efficiency is obviously improved by adopting numerical control flame gas cutting, the manufacturing cost is reduced, and the manufacturing method is optimized.
2. The traditional method for singly marking and drilling the circular holes of the foundation plate is improved into the method for assembling the circular holes with the waist-shaped hole bottom plate, determining the positions of the circular holes by the positions of the waist-shaped holes, and matching and marking the bottom plate and the foundation plate, so that the assembling quality and the production efficiency of the bottom plate and the foundation plate are obviously improved, and the manufacturing method is optimized.
3. The conventional method for separately delivering the sliding support base plate and the foundation plate is improved into the method for delivering the sliding support base plate and the foundation plate together by fixing the sliding support base plate and the foundation plate by using the packing bolts, so that the phenomenon that the sliding support base plate and the foundation plate are mixed and wrongly loaded at an installation site is avoided.
4. The invention adopts the method of matching and processing the hole group of the base plate and the hole group of the foundation plate, thereby solving the problems of high requirement on the position size precision of the hole group, high manufacturing difficulty and lower production efficiency caused by the independent processing of the base plate or the foundation plate.
The invention relates to a method for manufacturing a waist-shaped hole of a sliding support base plate of a deaerator of a power station, which is characterized in that under the condition of meeting the requirements of standards, design, manufacture and use, the method for manufacturing the waist-shaped hole of the sliding support base plate of the deaerator of the power station is independently innovated, the machining surface of the waist-shaped hole group of the sliding support base plate of the deaerator of the power station, which has high requirements for a long time, is improved into a numerical control gas cutting surface, and the waist-shaped hole group of the sliding support base plate and the circular hole group of the base plate of the sliding support are respectively and independently machined and improved into matched machining.
According to the manufacturing method of the waist-shaped hole of the bottom plate of the sliding support of the power station deaerator, disclosed by the invention, the roughness of the waist-shaped hole of the bottom plate is more reasonable, the process is simplified, the production efficiency, the product quality and the economic benefit are obviously improved, the manufacturing problems of single design structure and manufacturing method, low production efficiency, poor economic benefit, large size deviation and the like of the waist-shaped hole of the bottom plate of the sliding support of the power station deaerator in the prior art are effectively solved, and the technology is reasonable, practical, advanced and reliable.
The invention reduces the roughness of the waist-shaped hole of the bottom plate of the sliding support and requires a numerical control gas cutting method to improve the production efficiency and reduce the manufacturing cost; after the support assembly is welded, the method for pairing and marking the bottom plate and the foundation plate, scribing a circular hole line of the foundation plate and drilling the hole is adopted, the concentricity of the waist-shaped hole and the circular hole is ensured, the size deviation and the assembly difficulty are reduced, the manufacturing quality is improved, and the manufacturing method is practical, economic, reliable, effective, novel and efficient. The invention determines the position of the round hole by taking the waist-shaped hole as the reference, reduces the size precision requirement and the manufacturing difficulty of the traditional base plate for processing the round hole by single marking drill, and improves the production efficiency.
Drawings
Fig. 1 is a schematic structural view of a waist-shaped hole of a bottom plate of a sliding support of a deaerator in the background art.
FIG. 2 is a schematic top view of a waist-shaped hole of a bottom plate of a sliding support of a deaerator in the background art.
FIG. 3 is a schematic view of a method for manufacturing a waist-shaped hole of a sliding support base plate of a deaerator for a power station.
FIG. 4 is a schematic top view of the method for manufacturing the waist-shaped hole of the bottom plate of the sliding support of the deaerator in the power station.
FIG. 5 is a schematic view showing the structure of a shoe base plate according to embodiment 1.
FIG. 6 is a schematic plan view showing the structure of a shoe base plate according to embodiment 1.
Fig. 7 is a schematic structural view of a sliding support base plate and a sliding support base plate stacking and scribing circular hole lines in embodiment 1.
FIG. 8 is a schematic plan view of the structure of the sliding support base plate and the sliding support base plate assembled with a perforated line in the embodiment 1.
FIG. 9 is a schematic diagram of the construction of the sliding support of the deaerator for a power plant in the construction site in the embodiment 1.
In the figure, the reference numerals include a sliding support base plate 1, a sliding support base plate machine facing 1-1, a kidney-shaped hole 2, a sliding support base plate 3-1, a sliding support base plate facing 4, a circular hole 5, a vertical plate 6, a rib plate 7, a roller 8, a foundation bolt 9, a cement foundation and a nut 10.
Detailed Description
The invention will be described in further detail below with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1 to 9, the method for manufacturing the waist-shaped hole of the bottom plate of the sliding support of the deaerator in the power station according to the embodiment includes:
the method comprises the following steps: sliding support bottom plate and sliding support foundatin plate numerical control gas cutting unloading respectively, including numerical control gas cutting sliding support bottom plate waist shape hole shaping:
step two: leveling a flame or mechanical straightening sliding support base plate and a sliding support foundation plate;
step three: the sliding support base plate, the vertical plate and the rib plate are welded into a support assembly;
step four: leveling a bottom plate of the flame or mechanical straightening sliding support;
step five: the support component is laid down on a workbench of the numerical control boring and milling machine until the plane of the bottom plate of the sliding support is fixed at a vertical position;
step six: the machining surface of the machining sliding support base plate machine comprises a plane on one side, opposite to the sliding support base plate, of a single machining sliding support base plate;
step seven: clamping and fixing the added surface of the sliding support base plate machine and the added surface of the sliding support base plate machine, determining the circle center or marking the position line of the concentric circular holes on the sliding support base plate according to the position of the waist-shaped hole of the sliding support base plate, and then carrying out pairing marking and dismantling;
step eight: drilling a circular hole of a foundation plate of the sliding support by adopting a radial drilling machine;
step nine: during construction site installation, the sliding support base plate and the sliding support foundation plate are installed according to the pairing mark.
The shape and the waist-shaped hole of the bottom plate of the sliding support are processed by adopting a numerical control flame cutting method.
Round hole on the sliding support foundatin plate is put at the sliding support foundatin plate and is fixed the correction back in sliding support bottom plate below clamping to the waist shape hole of sliding support bottom plate is the benchmark, draws round hole line, pairing mark, unpacks apart, drills, in order to guarantee that waist shape hole is concentric with corresponding round hole.
The roughness of the round hole on the sliding support base plate is Ra12.5 mu m, the waist-shaped hole of the sliding support base plate is cut by flame, and the roughness is Ra 25-50 mu m.
A waist-shaped manufacturing method of a sliding support base plate of a deaerator of a power station is disclosed, as shown in figures 3 and 4, a waist-shaped hole 2 of the sliding support base plate is processed by numerical control cutting methods such as numerical control flame, plasma, water jet and the like; the round holes 4 of the sliding support foundation plate 3 are overlapped, matched with scribing, drilling and matching marking by taking the waist-shaped holes 2 as references so as to ensure that the waist-shaped holes are concentric with the corresponding round holes 4.
Example 1
As shown in fig. 5 and 6, the bottom plate of the deaerator sliding support of a power station has 1 piece, the specification of L multiplied by K multiplied by T =4000 multiplied by 500 multiplied by 30 (blank 34 mm), the specification of 8 waist-shaped holes L1 multiplied by K1=260 multiplied by 36, the distance L2=160mm, and the distance L3=3500mm between the waist-shaped hole groups at two ends; the diameter d =36mm of the corresponding circular hole of the foundation plate of the sliding support; the roughness of the waist-shaped hole and the round hole is Ra12.5 mu m.
The waist-shaped hole of the base plate of the traditional sliding support is processed by a numerical control boring and milling machine, and the main process flow is as follows: numerical control gas cutting → welding of the sliding support assembly → correction → numerical control boring and milling of the bottom plate and the base plate → marking of the waist-shaped hole line of the bottom plate and the circular hole line of the base plate → respectively controlling boring and milling of the waist-shaped hole of the bottom plate and drilling of the circular hole of the base plate → packaging and delivery. The waist-shaped hole of the bottom plate of the sliding support is subjected to the procedures of marking a waist-shaped hole line, clamping, boring and milling the waist-shaped hole and the like, so that the production efficiency is low and the manufacturing cost is high; the foundation plate lacks the hole matching procedure with the waist-shaped hole of the bottom plate through the procedures of independently drawing a circular hole line, drilling a circular hole by a drilling machine and the like, and the corresponding hole has large size deviation.
In order to improve the production efficiency and the product quality, simplify the process and reduce the fit size deviation, the waist-shaped hole manufacturing method of the sliding support base plate of the power station deaerator is adopted, the roughness of the waist-shaped hole is changed into a numerical control gas cutting surface, and hole marking lines, hole matching holes and matching marks are overlapped and assembled on the sliding support base plate circular hole by taking the base plate waist-shaped hole as a reference, as shown in fig. 7 and 8.
As shown in fig. 9, in actual use, the sliding support base plate 1 is placed above the sliding support base plate 3, the lower surface of the sliding support base plate 1 is a sliding support base plate machine facing surface 1-1, the upper surface of the sliding support base plate 3 is a sliding support base plate machine facing surface 3-1, the sliding support base plate 1 is a certain distance away from the sliding support base plate 3, rollers 7 are placed between the sliding support base plate 1 and the sliding support base plate 3 to facilitate displacement of the sliding support, the sliding support base plate 3 is fixed on the cement foundation 9 through foundation bolts 8, the foundation bolts 8 penetrate through circular holes of the sliding support base plate 3 and upwards, the foundation bolts 8 are fixed with the sliding support base plate 1 through nuts 10, in a construction site, the sliding support and the sliding support base plate 3 are fixed through the foundation bolts 8 according to pairing marks, and the sliding support base plate 1 and the sliding support base plate 3 are additionally provided with a margin of 2-6mm.
The main process flow is as follows: sliding support bottom plate and sliding support foundatin plate numerical control gas cutting unloading respectively, including numerical control gas cutting sliding support bottom plate waist shape hole shaping: → flame or mechanical straightening slide bearing bottom plate and slide bearing foundation plate are flat; welding the sliding support bottom plate, the vertical plate and the rib plate into a support assembly; → flame or mechanical straightening shoe sole plate leveling; → the support component is laid down on the workbench of the numerical control boring and milling machine until the plane of the bottom plate of the sliding support is fixed at a vertical position; the machining and sliding support base plate and the sliding support base plate are opposite to each other, and the machining and sliding support base plate and the sliding support base plate are opposite to each other; the face adding of the sliding support base plate machine and the face adding of the sliding support base plate machine are buckled, clamped and fixed oppositely, concentric circular hole position lines are marked on the sliding support base plate by taking the waist-shaped hole of the sliding support base plate as a reference, and then the matching marks are made and the sliding support base plate is disassembled; drilling a circular hole of the foundation plate of the sliding support by adopting a radial drilling machine; and → during delivery, the sliding support base plate and the sliding support foundation plate are matched according to marks, and during bundling, stacking and delivery → construction site installation, the sliding support base plate and the sliding support foundation plate are installed according to the matching marks.
According to the embodiment, the previous independent scribing and drilling of the round holes of the sliding support foundation plate 3 are improved into the mode of being assembled with the waist-shaped hole bottom plate, the round hole positions are determined according to the waist-shaped hole positions, the sliding support bottom plate 1 and the sliding support foundation plate 3 are matched and marked, the assembling quality and the production efficiency of the sliding support bottom plate 1 and the sliding support foundation plate 3 are obviously improved, and the manufacturing method is optimized.
The packaging and shipping steps of the embodiment are as follows: in the process of delivery or on the construction site, the sliding support and the matched sliding support foundation plate 3 are fixed by bolts according to matched marks, and the conventional sliding support base plate 1 and the sliding support foundation plate 3 are separately delivered by improving the mode that the sliding support base plate and the sliding support foundation plate can be fixed together by packaging bolts, so that the problems of mixing and wrong loading on the installation site are avoided.
After the improvement of the method, the production efficiency is obviously improved after the roughness of the waist-shaped hole is reduced and the numerical control flame gas cutting technology is adopted, the production efficiency of the sliding support base plate is improved by 20-33 percent after the improvement, the manufacturing cost is reduced, the product quality and the economic benefit are obviously improved, and the manufacturing method is optimized.
In this embodiment, by adopting the method of cooperatively processing the sliding support base plate 1 and the sliding support base plate 3 hole groups, the problems of high requirement on the hole group position size precision, large manufacturing difficulty and low production efficiency caused by independently processing the sliding support base plate 1 or the sliding support base plate 3 can be solved
The above description is only a preferred embodiment of the present invention, and these embodiments are based on different implementations of the present invention, and the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. The method for manufacturing the waist-shaped hole of the sliding support base plate of the deaerator in the power station is characterized by comprising the following steps of:
the method comprises the following steps: the numerical control gas cutting blanking is respectively carried out on the sliding support base plate and the sliding support foundation plate, and the numerical control gas cutting forming of the waist-shaped hole of the sliding support base plate comprises the following steps:
step two: the flame or mechanical straightening sliding support base plate and the sliding support base plate are flat;
step three: the sliding support base plate, the vertical plate and the rib plate are welded into a support assembly;
step four: leveling a bottom plate of the flame or mechanical straightening sliding support;
step five: the support component is laid down on a workbench of the numerical control boring and milling machine until the plane of the bottom plate of the sliding support is positioned at a vertical position and fixed;
step six: the machining surface of the machining sliding support base plate machine comprises a plane on one side, opposite to the sliding support base plate, of a single machining sliding support base plate;
step seven: clamping and fixing a machined surface of a sliding support foundation slab machine and a machined surface of a sliding support foundation slab machine, placing rollers between a sliding support base plate and the sliding support foundation slab for facilitating displacement of the sliding support, determining a circle center or marking a concentric circular hole position line by using the position of a waist-shaped hole of the sliding support base plate on the sliding support foundation slab, and then carrying out pairing marking and dismantling;
after the circular holes on the sliding support base plate are placed below a sliding support base plate, clamped, fixed and corrected, the circular holes are marked, matched and marked, disassembled and drilled by taking the waist-shaped holes of the sliding support base plate as a reference so as to ensure that the waist-shaped holes are concentric with the corresponding circular holes;
step eight: drilling a circular hole of a foundation plate of the sliding support by adopting a radial drilling machine;
step nine: and during construction site installation, the sliding support base plate and the sliding support foundation plate are installed according to the pairing marks.
2. The method for manufacturing the waist-shaped hole in the sliding support bottom plate of the power station deaerator as claimed in claim 1, wherein the shape and the waist-shaped hole of the sliding support bottom plate are processed by a numerical control flame cutting method.
3. The method for manufacturing the waist-shaped hole of the sliding support bottom plate of the power station deaerator as claimed in claim 1, wherein the roughness of the round hole in the sliding support base plate is Ra12.5 μm, the waist-shaped hole of the sliding support bottom plate is cut by flame, and the roughness is Ra 25-50 μm.
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| CN114321713B (en) * | 2021-12-29 | 2023-07-11 | 华能伊敏煤电有限责任公司汇流河热电分公司 | Sliding supporting device for supporting heavy pressure vessel |
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