CN116379248A - Construction method of reserved sleeve - Google Patents
Construction method of reserved sleeve Download PDFInfo
- Publication number
- CN116379248A CN116379248A CN202310433493.7A CN202310433493A CN116379248A CN 116379248 A CN116379248 A CN 116379248A CN 202310433493 A CN202310433493 A CN 202310433493A CN 116379248 A CN116379248 A CN 116379248A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- reserved
- template
- fixing piece
- fixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000004378 air conditioning Methods 0.000 abstract description 4
- 238000005034 decoration Methods 0.000 abstract description 3
- 239000003345 natural gas Substances 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 238000001746 injection moulding Methods 0.000 description 17
- 239000002023 wood Substances 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
- E04G15/061—Non-reusable forms
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/007—Plugs to close openings in forms' surface
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/06—Forming boards or similar elements the form surface being of metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/115—Caps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a construction method for a reserved sleeve, which comprises the following steps: a. covering the embedded part with the end cover at two ends of the nested component to form an assembly, and placing the assembly into a beam groove bound by the reinforcing steel bars; b. fixing the fixing piece on the templates at two sides by using screws; c. pouring concrete; d. when the template is removed, the fixing piece and the screw are reserved on the template, and the embedded piece and the nested component are reserved in the concrete beam to form a reserved sleeve; e. and after the screws are removed, the templates are continuously used on other floors. During installation, each component can be installed in the same position, when the template is removed, the fixing piece and the screw can still be adhered to the aluminum mould, and when the lower sleeve is installed, the fixing piece screw is loosened only in the original position, and the new component is reinstalled to use the sleeve, so that the time when water supply, air conditioning, natural gas and other plate passing walls and beam sleeve are reserved in the building decoration house beam and the pre-buried installation is greatly shortened, the work flow is simplified, and the pipe cover also plays a role in temporarily blocking the sleeve holes and sealing the separation space.
Description
The application is a divisional application of patent of invention with the application date of 2019, 4-month and 19, the application number of 201910318391.4 and the invention creation name of 'a tube cover'.
Technical Field
The invention relates to the field of buildings, in particular to a construction method for a reserved sleeve.
Background
Along with the continuous appearance of a finishing commodity house, the number of sleeves for water supply, air conditioning, water drainage and the like reserved in a finishing house beam is increased, the number of reserved sleeves for each household is 20 to 30, and 40 to 50, the number of reserved sleeves is reduced, the number of reserved sleeves is increased, the reserved sleeves are prefabricated by a worker in labor quantity, the sleeves are required to be put by the worker in installation, and the sleeves are required to be found and the edges of the sleeves are required to be finished by the worker in welding; in the construction process, because the elevation of the steel bar in the beam has deviation, after the construction is finished, because the sleeve is shorter than the beam, the sleeve cannot be exposed after pouring, the concrete surface beside the sleeve is required to be searched, the finished product is damaged in the searching process, the periphery is not smooth after the sleeve is found out, the repairing is required, the knocked-out garbage is required to be cleaned, the two ends of the existing sleeve are required to be sealed by using adhesive tapes manually, the adhesive tapes are firmly adhered layer by layer, and a lot of manpower and material resources are required; when the situation that the construction time is very short before the building concrete is poured is met, great pressure is brought to electromechanical constructors, wood forms are used, a lot of works are needed to be prefabricated in advance and line in advance, the work of locating the sleeve is needed, constructors are needed to be added in a short time in the construction process, great difficulty and trouble are brought to construction arrangement, and therefore a new pipe cover is needed to be redesigned.
The present invention has been made to solve the above problems.
Disclosure of Invention
The invention aims to provide the pipe cover and the construction method for reserving the sleeve, which have the advantages of simple structure, convenient use, reduced construction pressure of workers, attractive appearance after installation, reduced construction cost and improved working efficiency.
The invention adopts the technical proposal for solving the technical problems that:
the pipe cover comprises a nested component, an embedded part and an end cover, wherein the end cover is arranged on the nested component through the embedded part, and the nested component is of a structure with two open ends;
the embedded part is sleeved on the outer surface of the nesting component, and the embedded part is matched with the shape of the nesting component;
the embedded parts are arranged at two ends of the nesting component, and the embedded parts are provided with fixing parts;
the end covers are arranged on the embedded parts and are arranged at the two open ends of the nested component through the embedded parts;
the surface area of the end cover is equal to the surface area formed by the embedded parts sleeved on the nested component;
the end surface of the nested component is smaller than the surface area of the end cover;
further, the nested component is tubular;
further, the embedded part is in a round shape;
the nested component is square;
specifically, the nested component is square in shape;
wherein, the mounting is provided with 2 at least, and the even distribution of mounting is on the outer lane of built-in fitting.
The embedded part, the end cover and the fixing part form an injection molding part, and the injection molding part is formed by injection molding of an injection mold;
the injection mold comprises a movable mold and a fixed mold, wherein the movable mold is arranged on the fixed mold, a thimble and an injection core are also arranged in the injection mold, and the thimble and the injection core are arranged on the fixed mold;
the movable die is internally provided with a die cavity, the die cavity is communicated with a core at the center of the bottom end of the fixed die, the ejector pin is positioned between the movable die and the fixed die, one end of the ejector pin is arranged on the fixed die, and the other end of the ejector pin is positioned on one side of the die cavity.
The injection molding part can be formed after the injection molding of the die cavity, and the injection molding part can be separated from the die cavity through the ejector pin after injection molding of the injection molding part is completed.
The working principle is as follows: when the fixing device is installed, the end covers are covered at two ends of the nested assembly, the end covers are placed into the beam when the beam steel bars are bound, and then the fixing piece is fixed by using the screw; when the end cover is needed to be used, the end cover can be knocked off, and the end cover can also play a role in sealing and separating the space when the end cover is not used;
when the wood die for fixing the fixing piece is changed into an aluminum die, each assembly can be installed at the same position, when the die plate is removed, the fixing piece and the screws can still be adhered to the aluminum die, and when the lower sleeve is installed, the screws of the fixing piece are loosened at the original position, so that a new assembly is newly installed.
The invention has the beneficial effects that: by using the sleeve, the time for pre-burying and installing the sleeve by passing through a plate wall and a beam sleeve pipe such as water supply, air conditioning and natural gas is greatly shortened in a building decoration house beam, the sleeve is not required to be plugged by an adhesive tape in advance, the working flow is simplified, the problem that the height of the sleeve is influenced by the height adjustment of the reinforcing steel bars is not required to be considered, the problem that main reinforcing steel bars are damaged is also not required to be considered, the construction pressure of workers is reduced, the sleeve is attractive after installation, the sleeve is not required to be found, the damage to the finished concrete surface layer on the periphery of the sleeve when the concrete is beaten in the sleeve searching process is avoided, the high-altitude operation is avoided, the construction safety risk is avoided, the construction link is reduced, the labor amount is reduced, the working efficiency is improved, the construction cost is greatly reduced, and the appearance of the finished product is improved; the wood die is changed into the reusable aluminum die, so that the work of pre-scribing and positioning the sleeve is saved, the construction steps are simplified, the labor is saved, the cost is reduced, and the energy-saving and environment-friendly requirements are met.
Drawings
Fig. 1 is a schematic structural view of a tube cover according to the present invention.
FIG. 2 is a schematic view of the embedment of FIG. 1 mounted on a nesting component.
FIG. 3 is a schematic view of the end cap and embedment of FIG. 1 mounted together.
Fig. 4 is a schematic structural view of a pipe cover mounted on an aluminum mould before pouring floor concrete according to the present invention.
Fig. 5 is a schematic structural view of the pipe cover after pouring concrete on a floor.
Fig. 6 is a schematic view of the structure of an injection mold for producing an injection molded article.
Fig. 7 is a side view of fig. 6.
FIG. 8 is a schematic view showing the structure of the injection molding on the stent after the completion of the injection molding using FIG. 6.
Detailed Description
In order that the manner in which the above-recited features, advantages, objects and advantages of the invention are obtained, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
Referring to fig. 1 to 8, the sleeve comprises a nested component 1, an embedded part 2 and an end cover 3, wherein the end cover 3 is arranged on the nested component 1 through the embedded part 2, and the nested component 1 is of a structure with two open ends;
the embedded part 2 is sleeved on the outer surface of the nesting component 1, and the embedded part 2 is matched with the shape of the nesting component 1;
the embedded parts 2 are arranged at two ends of the nested assembly 1, and the embedded parts 2 are provided with fixing parts 4;
the end covers 3 are arranged on the embedded parts 2, and the end covers 3 are arranged at the two open ends of the nested component 1 through the embedded parts 2;
the surface area of the end cover 3 is equal to the surface area formed by the embedded part 2 sleeved on the nested component 1;
the end surface of the nested component 1 is smaller than the surface area of the end cover 3;
further, the nesting component 1 is in a tubular shape;
furthermore, the embedded part 2 is in a circular shape;
the nested component 1 is square in shape;
specifically, the nesting component 1 is square;
wherein, mounting 4 is provided with 2 at least, and mounting 4 even distribution is on the outer lane of built-in fitting 2.
The embedded part 2, the end cover 3 and the fixing part 4 form an injection molding part 6, and the injection molding part 6 is formed by injection molding of an injection mold;
the injection mold comprises a movable mold 7 and a fixed mold 8, wherein the movable mold 7 is arranged on the fixed mold 8, a thimble 10 and a core 9 are also arranged in the injection mold, and the thimble 10 and the core 9 are arranged on the fixed mold 8;
the movable die 7 is internally provided with a die cavity, the die cavity is communicated with a pouring core 9 at the center of the bottom end of the fixed die 8, a thimble 10 is positioned between the movable die 7 and the fixed die 8, one end of the thimble 10 is arranged on the fixed die 8, and the other end of the thimble 10 is positioned on one side of the die cavity.
The injection molding part 6 can be formed after the mold cavity is subjected to injection molding, and the injection molding part 6 can be separated from the mold cavity through the ejector pins 10 after the injection molding is finished.
When the fixing device is installed, the end covers are covered at two ends of the nested assembly, the end covers are placed into the beam when the beam steel bars are bound, and then the fixing piece is fixed by using the screw; when the end cover is needed to be used, the end cover can be knocked off, and the end cover can also play a role in sealing and separating the space when the end cover is not used;
when the wood die for fixing the fixing piece is changed into the aluminum die 5, each assembly can be installed at the same position, when the die plate is removed, the fixing piece and the screws can still be stuck on the aluminum die, and when the lower sleeve is installed, the screws of the fixing piece are loosened at the original position, so that a new assembly is newly installed.
By using the sleeve, the time for pre-burying and installing the sleeve by passing through a plate wall and a beam sleeve pipe such as water supply, air conditioning and natural gas is greatly shortened in a building decoration house beam, the sleeve is not required to be plugged by an adhesive tape in advance, the working flow is simplified, the problem that the height of the sleeve is influenced by the height adjustment of the reinforcing steel bars is not required to be considered, the problem that main reinforcing steel bars are damaged is also not required to be considered, the construction pressure of workers is reduced, the sleeve is attractive after installation, the sleeve is not required to be found, the damage to the finished concrete surface layer on the periphery of the sleeve when the concrete is beaten in the sleeve searching process is avoided, the high-altitude operation is avoided, the construction safety risk is avoided, the construction link is reduced, the labor amount is reduced, the working efficiency is improved, the construction cost is greatly reduced, and the appearance of the finished product is improved; the wood die is changed into the reusable aluminum die, so that the work of pre-scribing and positioning the sleeve is saved, the construction steps are simplified, the labor is saved, the cost is reduced, and the energy-saving and environment-friendly requirements are met.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The construction method of the reserved sleeve comprises the following steps:
a. covering the embedded part (2) with the end cover (3) at two ends of the nested component (1) to form an assembly, and placing the assembly into a beam groove bound by steel bars;
b. fixing the fixing piece (4) on the templates (5) at two sides by using screws;
c. pouring concrete;
d. when the template (5) is removed, the fixing piece (4) and the screw are reserved on the template (5), and the embedded piece (2) and the nested component (1) are reserved in the concrete beam to form a reserved sleeve;
e. and after the screws are removed, the template (5) is continuously used on other floors.
2. A construction method of a reserved sleeve according to claim 1, characterized in that the form (5) is an aluminium form.
3. The method of constructing a preformed sleeve of claim 1, further comprising step f: when the reserved sleeve is needed, the end cover (3) is knocked off.
4. The construction method of the reserved sleeve according to claim 1, wherein the nested component (1) is of a structure with two open ends, the embedded part (2) and the end cover (3) are integrally injection molded, the embedded part (2) is sleeved on the outer surface of the nested component (1), and the shape of the embedded part (2) is matched with that of the nested component (1).
5. The construction method of the reserved sleeve according to claim 1, wherein the fixing piece (4) is arranged on the outer ring of the embedded piece (2), and the embedded piece (2) and the fixing piece (4) are integrally injection molded.
6. The construction method of the reserved sleeve according to claim 1, wherein at least 2 fixing pieces (4) are arranged, the fixing pieces (4) are uniformly distributed on the outer ring of the embedded part (2), and the fixing pieces (4) are separated from the embedded part (2) and remain on the template (5) when the template (5) is removed.
7. The construction method of the reserved sleeve according to claim 1, wherein the end cover (3), the embedded part (2) and the fixing part (4) are integrally injection molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310433493.7A CN116379248A (en) | 2019-04-19 | 2019-04-19 | Construction method of reserved sleeve |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310433493.7A CN116379248A (en) | 2019-04-19 | 2019-04-19 | Construction method of reserved sleeve |
| CN201910318391.4A CN109945008A (en) | 2019-04-19 | 2019-04-19 | A kind of pipe lid |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910318391.4A Division CN109945008A (en) | 2019-04-19 | 2019-04-19 | A kind of pipe lid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116379248A true CN116379248A (en) | 2023-07-04 |
Family
ID=67015714
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310433493.7A Pending CN116379248A (en) | 2019-04-19 | 2019-04-19 | Construction method of reserved sleeve |
| CN201910318391.4A Pending CN109945008A (en) | 2019-04-19 | 2019-04-19 | A kind of pipe lid |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910318391.4A Pending CN109945008A (en) | 2019-04-19 | 2019-04-19 | A kind of pipe lid |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN116379248A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945008A (en) * | 2019-04-19 | 2019-06-28 | 刘伟 | A kind of pipe lid |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576459A (en) * | 2022-03-11 | 2022-06-03 | 刘伟 | Construction method of reserved sleeve |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200437763Y1 (en) * | 2007-02-15 | 2007-12-26 | 정병욱 | A sleeve fixture on panal |
| KR20100009320U (en) * | 2009-03-13 | 2010-09-27 | 홍의삼 | Penetration sleeve for piping |
| CN202344783U (en) * | 2011-10-25 | 2012-07-25 | 长城汽车股份有限公司 | Forcible demolding mechanism for injection mold |
| CN204875972U (en) * | 2015-08-21 | 2015-12-16 | 中建二局第一建筑工程有限公司 | Pre -buried seat of drain pipe between kitchen guarding |
| KR101643398B1 (en) * | 2016-01-19 | 2016-08-10 | 고의환 | Breast wall sleeve |
| CN206233577U (en) * | 2016-11-29 | 2017-06-09 | 中建五局华东建设有限公司 | The positioner of sleeve pipe on a kind of aluminum dipping form |
| CN206926199U (en) * | 2017-05-13 | 2018-01-26 | 台州贝力得模塑有限公司 | Injection mold |
| CN206855911U (en) * | 2017-05-16 | 2018-01-09 | 宿迁学院 | A kind of electric cooker handle injection mold |
| CN106978901A (en) * | 2017-05-24 | 2017-07-25 | 湖北高企达建设有限公司 | A kind of anti-loosening embedded water stop joint and its built-in process |
| CN107675881A (en) * | 2017-09-25 | 2018-02-09 | 中铁五局集团建筑工程有限责任公司 | A kind of detachable mounting kit and method applied to aluminum alloy mould plate built-in fitting |
| CN107932826A (en) * | 2017-12-13 | 2018-04-20 | 乌鲁木齐九品芝麻信息科技有限公司 | A kind of IMR techniques injection mold and its application method |
| CN207920077U (en) * | 2017-12-18 | 2018-09-28 | 中国建筑第五工程局有限公司 | A kind of installation fixation kit of waterstop joint |
| CN208009901U (en) * | 2018-02-12 | 2018-10-26 | 上海建工二建集团有限公司 | A kind of fixed structure |
| CN208068795U (en) * | 2018-04-03 | 2018-11-09 | 台州市黄岩广环工贸有限公司 | Electric vehicle headlight lampshade injection mold with rectangular positioning mechanism for thimble |
| CN109025278B (en) * | 2018-07-26 | 2021-07-06 | 重庆新久融科技有限公司 | Aluminum alloy template pre-buried hole piece fixing device and using method thereof |
| CN116379248A (en) * | 2019-04-19 | 2023-07-04 | 刘伟 | Construction method of reserved sleeve |
| CN209977558U (en) * | 2019-04-19 | 2020-01-21 | 刘伟 | Pipe cover |
-
2019
- 2019-04-19 CN CN202310433493.7A patent/CN116379248A/en active Pending
- 2019-04-19 CN CN201910318391.4A patent/CN109945008A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945008A (en) * | 2019-04-19 | 2019-06-28 | 刘伟 | A kind of pipe lid |
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| Publication number | Publication date |
|---|---|
| CN109945008A (en) | 2019-06-28 |
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