CN109262825A - A method of making built-in electrical spool preformed hole - Google Patents
A method of making built-in electrical spool preformed hole Download PDFInfo
- Publication number
- CN109262825A CN109262825A CN201811332425.7A CN201811332425A CN109262825A CN 109262825 A CN109262825 A CN 109262825A CN 201811332425 A CN201811332425 A CN 201811332425A CN 109262825 A CN109262825 A CN 109262825A
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- Prior art keywords
- built
- electrical spool
- spool
- electrical
- section
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
Abstract
The invention discloses a kind of methods for making built-in electrical spool preformed hole, including the prefabricated beam mould of assembling and reinforcing bar, are processed into precast beam reinforced bar cage；Built-in electrical spool prepared hole die is placed in precast beam reinforced bar cage and is fixed；The casting concrete into prefabricated beam mould；Judge whether concrete is in pre-hardening state, if so, built-in electrical spool prepared hole die is extracted from concrete.Because the concrete of pre-hardening state has begun solidification, after built-in electrical spool prepared hole die takes out, built-in electrical spool preformed hole will not deform；And the both ends that cuff is placed in spool in advance are not needed, avoid the damage and destruction in handling process to spool and cuff.
Description
Technical field
The present invention relates to assembled architecture field of engineering technology, more specifically to a kind of built-in electric wire of production
The method of pipe preformed hole.
Background technique
With assembled architecture development and widely popularize, there is various technical problem, existing assembled skill
The related way of art just seems awkward, the serious development for restricting assembled architecture technology.
Such as: assembled architecture design, production in practice, are frequently encountered electrical spool and need to pass through precast construction beam
Problem.In the prior art, it can be used by needing to be arranged the position welded reinforcement of built-in electric wire pore on prefabricated beam mould
In support spool；Then so that spool is passed through reinforcing bar, cover in the outside of reinforcing bar；And the both ends of spool are set with cuff, then into
Precast beam is carried out demoulding processing, the spool with cuff is fixed in prefabricated at this time after concrete dry by row placing concrete
In girder construction.
In the prior art, spool is placed directly in concrete structure, due to the finite stiffness of spool, it is easy to occur
Deformation causes trouble for subsequent threading；And a large amount of cuffs are cased on the outside of spool, during carrying or storing, being easy will set
Hoop abrasion destroys, and influences the connection between subsequent spool, and reserved cuff not necessarily meets site operation requirement, causes big
Measure cuff waste；In addition, needing the reinforcing bar that will be welded originally to amputate after the position of spool changes, carried out in new position
Again it welds, operating process is cumbersome, and cannot be suitable for a variety of spool arrangements simultaneously, keeps production efficiency lower, is produced into
This is higher.
In conclusion spool during making built-in electrical spool preformed hole how to be avoided to deform and reserve a large amount of sets
Hoop, is a problem to be solved by those skilled in the art.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method for making built-in electrical spool preformed hole, Ke Yiyou
Effect avoids spool during processing built-in electrical spool preformed hole from deforming and reserve a large amount of cuffs, to make product
Quality advance and production cost reduction.
To achieve the goals above, the invention provides the following technical scheme:
A method of making built-in electrical spool preformed hole characterized by comprising assemble prefabricated beam mould and steel
Muscle is processed into precast beam reinforced bar cage；Built-in electrical spool prepared hole die is placed in the precast beam reinforced bar cage and is fixed；
The casting concrete into the prefabricated beam mould；Judge whether the concrete is in pre-hardening state；If so, by described built-in
The electrical spool prepared hole die of formula is extracted from the concrete.
Preferably, described that built-in electrical spool prepared hole die is placed in the precast beam reinforced bar cage and is fixed, packet
It includes:
It will be used to be placed in the precast beam to the fixing tool that the built-in electrical spool prepared hole die is fixed
In mold, and the fixing tool is connect with the prefabricated beam mould；
The built-in electrical spool prepared hole die is fixed using the fixing tool.
Preferably, by the built-in electrical spool prepared hole die, spiral is also wrapped after extracting from the concrete
It includes: the built-in electrical spool prepared hole die is cleaned.
Preferably, the built-in electrical spool prepared hole die includes: the built-in section that drills, for being placed in the precast beam
In, to form built-in electrical spool preformed hole, and the lateral surface of the built-in drilling section is provided with screw thread；Exposed force section,
For extracting built-in electrical spool prepared hole die spiral from the concrete；Linkage section, it is described for connecting
Built-in drilling section and the exposed force section.
Preferably, the end of the exposed force section, which is provided with, reserves the built-in electrical spool for engagement tool
The turret head that punch die spiral is extracted.
Preferably, the exposed force section is provided with the built-in electrical spool prepared hole die for engagement tool
The threaded hole that spiral is extracted, and the central axis upright of the threaded hole is in the length direction of the exposed force section.
Preferably, the built-in section that drills is the frustum cone structure with certain taper, and the following table of the built-in drilling section
Face area is less than upper surface area.
Preferably, hollow structure is provided in the built-in drilling section；And/or it is provided in the exposed force section hollow
Structure；And/or hollow structure is provided in the linkage section.
Preferably, the surface of the built-in drilling section is provided with rust-proof coating.
A kind of method making built-in electrical spool preformed hole provided by the invention, comprising: assemble prefabricated beam mould and
Reinforcing bar is processed into precast beam reinforced bar cage；Built-in electrical spool prepared hole die is placed in precast beam reinforced bar cage and is fixed；To
Casting concrete in prefabricated beam mould；Judge whether concrete is in pre-hardening state, if so, built-in electrical spool is reserved
Punch die spiral from concrete is extracted.
Technical solution provided by the present invention, will be built-in electrical during making built-in electrical spool preformed hole
Spool prepared hole die is placed in precast beam reinforced bar cage, instead of the behaviour being in the prior art put into spool in precast beam reinforced bar cage
Make, it is built-in since built-in electrical spool prepared hole die generally uses metal material or the higher material of other hardness
The electrical spool prepared hole die of formula is not susceptible to deform；When concrete is in pre-hardening state, built-in electrical spool is reserved
Punch die is extracted, because concrete is in pre-hardening state, not needing can be by built-in electric wire using biggish external force
Pipe prepared hole die is extracted；Again because the concrete of pre-hardening state has begun solidification, built-in electrical spool preformed hole
After mold takes out, built-in electrical spool preformed hole will not deform.
After concrete is fixed, precast beam is subjected to demoulding processing, then precast beam completes the process, when needs are in precast beam
In when penetrating spool, spool need to only be penetrated to built-in electrical spool preformed hole；Due to that during processing, can make built-in
The sectional dimension of electrical spool preformed hole is slightly larger than the sectional dimension of spool, so that spool can be penetrated successfully, to make work
Process is more convenient, quick；Also, the both ends that cuff is placed in spool in advance are not needed, are avoided in handling process to line yet
The damage and destruction of pipe and cuff.Therefore, production cost can be reduced.
In addition, built-in electrical spool prepared hole die provided by the present invention may be reused, make production process more
Add environmental protection.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram of built-in electrical spool prepared hole die provided by the present invention；
Fig. 2 is the schematic diagram of A-A section in Fig. 1；
Fig. 3 is the partial enlarged view of the part F in Fig. 1；
Fig. 4 is the schematic diagram of B-B section in Fig. 3；
Fig. 5 is the schematic diagram of C-C section in Fig. 3；
Fig. 6 is the schematic diagram of D-D section in Fig. 3；
Fig. 7 is the schematic diagram of E-E section in Fig. 3；
Fig. 8 is the method flow diagram of the built-in electrical spool preformed hole of production provided by the present invention；
Fig. 9 is the fixed flow diagram of built-in electrical spool prepared hole die.
In Fig. 1-9:
1 is built-in drilling section, 2 be linkage section, 3 be exposed force section, 31 be threaded hole, 32 be turret head.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Core of the invention is to provide a kind of method for making built-in electrical spool preformed hole, it is possible to prevente effectively from spool
A large amount of cuffs are deformed and reserve, and built-in electrical spool prepared hole die can also be recycled.
Fig. 1-9 is please referred to, Fig. 1 is the structural schematic diagram of built-in electrical spool prepared hole die provided by the present invention；
Fig. 2 is the schematic diagram of A-A section in Fig. 1；Fig. 3 is the partial enlarged view of the part F in Fig. 1；Fig. 4 is the signal of B-B section in Fig. 3
Figure；Fig. 5 is the schematic diagram of C-C section in Fig. 3；Fig. 6 is the schematic diagram of D-D section in Fig. 3；Fig. 7 is that E-E section shows in Fig. 3
It is intended to；Fig. 8 is the method flow diagram of the built-in electrical spool preformed hole of production provided by the present invention；Fig. 9 is built-in electrical
The fixed flow diagram of spool prepared hole die.
A kind of method making built-in electrical spool preformed hole provided by the present invention, comprising:
Step S1: assembling prefabricated beam mould and reinforcing bar, is processed into precast beam reinforced bar cage.
Prefabricated beam mould in above-mentioned steps, for production precast beam during required mold, generally comprise side form
And bed die, therefore need to assemble on mold before use；And the inside of precast beam needs bar construction, therefore by reinforcing bar
It is bound, forms steel reinforcement cage.
Step S2: built-in electrical spool prepared hole die is placed in precast beam reinforced bar cage and is fixed.
In above-mentioned steps, needs for built-in electrical spool prepared hole die to be placed in precast beam reinforced bar cage and fixed, put
The position for setting built-in electrical spool prepared hole die is just had determined in the design process of reinforcing bar beam；It is built-in electrical
The fixed form of spool prepared hole die can be to be fixed by the locating slot being set on prefabricated beam mould, can also be led to
It crosses other positioning methods to be fixed, this will not be repeated here.
In addition, it is also necessary to other built-in fittings is placed in precast beam reinforced bar cage, be placed in precast beam in all built-in fittings
After in steel reinforcement cage, next step operation is carried out.
Step S3: the casting concrete into prefabricated beam mould.
Step S4: judge whether concrete is in pre-hardening state.
Step S5: if so, built-in electrical spool prepared hole die is extracted from concrete.
The pre-hardening state of concrete refers to that concrete just starts the state of solidification, and concrete not yet will be built-in at this time
Electrical spool prepared hole die is completely fixed, and is slightly exerted oneself, so that it may built-in electrical spool prepared hole die is extracted, and
It is built-in electrical after built-in electrical spool prepared hole die is extracted and since concrete has been in curdled appearance
Spool preformed hole will not deform.
It is processed since built-in electrical spool prepared hole die is typically chosen the biggish material of hardness, such as carbon steel
Deng, therefore when built-in electrical spool prepared hole die is in concrete, can't because of concrete pressure and occur
Deformation, therefore after built-in electrical spool prepared hole die taking-up, it can also reuse.
The method of the built-in electrical spool preformed hole of production provided by the present invention, by built-in electrical spool preformed hole mould
Tool is embedded in concrete in advance, avoid because spool is softer and the phenomenon that deform, make built-in electrical spool preformed hole
Size is more in line with requirement；Meanwhile the operation that cuff is set in spool both ends in advance is also avoided, during carrying not
The spool or cuff at both ends can be damaged；And during use, can select according to demand spool length and
The quantity of cuff avoids unnecessary waste, saves production cost.
In addition, built-in electrical spool prepared hole die provided by the present invention may be reused, meet green production
Theory, be good for the environment.
After solidifying completely to concrete, precast beam is subjected to demoulding processing, and by transporting precast beams to construction site, rise
Hang installation；During assembly, need to be intercepted spool certain according to the positional relationship between lamps and lanterns wire box and switch wire box
Length, and spool is subjected to 90 ° of bendings；Then one end of spool and lamps and lanterns wire box are connected, the other end penetrates built-in electrical
In spool preformed hole, installed and used for later period switch wire box；And dedicated closure adhesive tape is used, by spool and built-in electric wire
The junction of pipe preformed hole blocks closely knit.
On the basis of the above embodiments, in order to make built-in electrical spool prepared hole die can be adapted for different structure
Precast beam processing, built-in electrical spool prepared hole die is placed in precast beam reinforced bar cage and fixed, comprising:
Step S21: it will be used to be placed in precast beam to the fixing tool that built-in electrical spool prepared hole die is fixed
In mold, and fixing tool is connect with prefabricated beam mould.
In above-mentioned steps S21, by the fixing tool for being used to that built-in electrical spool prepared hole die to be fixed and in advance
Beam mould connection processed, therefore, can be arranged the installation site of multiple fixing tools on prefabricated beam mould, built-in in precast beam
, can be by changing installation site of the fixing tool in prefabricated beam mould when the position of spool preformed hole changes, it will be interior
It sets the electrical spool prepared hole die of formula and is fixed on different positions.
Preferably, fixing tool can be connect with the fixed frame in the side form of prefabricated beam mould, fixing tool can be consolidated
Due to the different location of fixed frame.
Step S22: built-in electrical spool prepared hole die is fixed using fixing tool.
When built-in electrical spool in the built-in electrical spool preformed hole or precast beam in precast beam containing different number
When the position of preformed hole changes, it can directly pass through the position of the quantity or change fixing tool that increase or decrease fixing tool
Set realization, compared with the prior art in reinforcing bar is welded and is cut again, the technical solution in the present embodiment is simpler
It is easy, lower production costs.
In view of built-in electrical spool prepared hole die is during extraction, surface meeting legacy part concrete is residual
It is remaining, in order to avoid being impacted to built-in electrical reusing for spool prepared hole die, built-in electrical spool is reserved
Punch die is after spiral extraction in concrete further include:
Step S6: built-in electrical spool prepared hole die is cleaned.
Preferably, the table of built-in electrical spool prepared hole die is adhered to after solidifying completely in order to avoid concrete
Face, it is not easy to clear up, it can be cleaned as early as possible after built-in electrical spool prepared hole die is extracted.
On the basis of the above embodiments, can the structure further to built-in electrical spool prepared hole die limit
It is fixed, it can make the built-in electrical spool prepared hole die include:
Built-in drilling section 1, for being placed in precast beam, to form built-in electrical spool preformed hole, and built-in drilling section 1
Lateral surface be provided with screw thread；Exposed force section 3, for pulling out built-in electrical spool prepared hole die spiral from concrete
Out；Linkage section 2, for connecting built-in drilling section 1 and exposed force section 3.
The axial cross section size needs of built-in drilling section 1 are matched with by the size of spool to be mounted；It preferably, can be with
Slightly larger than the size of spool, facilitate penetrating for subsequent spool.
The screw pitch and other parameters of built-in drilling 1 surface screw thread of section need determines according to actual conditions, not doing herein superfluous
It states.
Exposed force section 3 is mainly used for extracting built-in electrical spool prepared hole die from concrete, therefore exposed
The length and sectional dimension for the section 3 that exerts a force can be matched with the size of related tool, can also be in exposed force section 3 directly
Handle is set, for extracting built-in electrical spool prepared hole die spiral.
The setting of the length and sectional dimension of linkage section 2 makes with when extracting built-in electrical spool prepared hole die spiral
Tool is related, need to meet can engagement tool built-in electrical spool prepared hole die is smoothly extracted, and do not destroy
The structure of precast beam；The size of specific linkage section 2 needs determines according to actual conditions.
It extracts, can be set in the end of exposed force section 3 in order to facilitate by built-in electrical spool prepared hole die spiral
Set the turret head 32 for built-in electrical spool prepared hole die spiral being extracted for engagement tool.
Preferably, the central axis of turret head 32 is overlapped with the central axis of exposed force section 3.
During use, the tools such as spanner can be used and screw turret head 32, so that built-in electrical spool is pre-
Mold spiral of boxing out is extracted.
Furthermore it is also possible to be used for engagement tool for built-in electrical spool prepared hole die spiral shell in the setting of exposed force section 3
The threaded hole 31 extracted is revolved, and the central axis upright of threaded hole 31 is in the length direction of exposed force section 3.
Threaded hole 31 can be through-hole, is also possible to incomplete perforative threaded hole, determines with specific reference to actual conditions.
The size of threaded hole 31 can be according to power required for extracting built-in electrical spool prepared hole die spiral
Size determines.
, can be fixed by threaded hole 31 by the screwing tool with helicitic texture during use, then to screwing
Tool applies torque, so that it is driven built-in electrical spool prepared hole die rotation, thus by built-in electrical spool preformed hole
Mold spiral is extracted.
On the basis of the above embodiments, for convenience will built-in electrical spool prepared hole die spiral extraction, can be with
The frustum cone structure with certain taper is set by built-in drilling section 1, and the lower surface area of built-in drilling section 1 is less than upper surface
Area.
The size of built-in drilling 1 taper of section, determines according to actual conditions.
During use, the built-in drilling section 1 with certain taper is during spiral is extracted, to built-in electricity
The destruction that gas spool reserves hole surface is smaller, and the quality of built-in electrical spool preformed hole can be improved.
On the basis of the above embodiments, in order to make built-in electrical spool prepared hole die have more lightweight, Ke Yi
Hollow structure is set in built-in drilling section 1；And/or hollow structure is set in exposed force section 3；And/or it is set in linkage section 2
Empty core structure.
To mitigate the quality of built-in electrical spool prepared hole die, while raw material can also be saved, to reduce
Production cost；The workload in handling process can also be mitigated simultaneously.
In order to avoid built-in drilling section 1 is often in contact with concrete, surface is corroded, can be in the table of built-in drilling section 1
Rust-proof coating is arranged in face.
In another embodiment, built-in electrical spool prepared hole die includes built-in drilling section 1, exposed force section
3 and linkage section 2, wherein the taper of built-in drilling section 1 is 0.02, length 600mm, 2 length of linkage section is 30mm, exposed force
Section 3 includes three parts, and first part, second part, Part III are sequentially connected, and first part connect with linkage section 2, and the
The threaded hole 31 of exposed force 3 length direction of section is provided perpendicular in a part, the length of second part is 15mm, third portion
Turret head 32 is provided on point, and the distance between two parallel edges of turret head 32 are 30mm.
It needs to be illustrated, spool mentioned in the present invention is generally PC20 spool, naturally it is also possible to be other materials
The spool of material or size, this will not be repeated here.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.All realities provided by the present invention
Any combination mode of example is applied in the protection scope of the invention, this will not be repeated here.
The method of the built-in electrical spool preformed hole of production provided by the present invention is described in detail above.Herein
In apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to sides
Assistant solves method and its core concept of the invention.It should be pointed out that for those skilled in the art, not
, can be with several improvements and modifications are made to the present invention under the premise of being detached from the principle of the invention, these improvement and modification are also fallen into
In the protection scope of the claims in the present invention.
Claims (9)
1. a kind of method for making built-in electrical spool preformed hole characterized by comprising
Prefabricated beam mould and reinforcing bar are assembled, precast beam reinforced bar cage is processed into；
Built-in electrical spool prepared hole die is placed in the precast beam reinforced bar cage and is fixed；
The casting concrete into the prefabricated beam mould；
Judge whether the concrete is in pre-hardening state；If so, by the built-in electrical spool prepared hole die from institute
It states in concrete and extracts.
2. the method for the built-in electrical spool preformed hole of production according to claim 1, which is characterized in that it is described will be built-in
The electrical spool prepared hole die of formula is placed in the precast beam reinforced bar cage and fixes, comprising:
It will be used to be placed in the prefabricated beam mould to the fixing tool that the built-in electrical spool prepared hole die is fixed
In, and the fixing tool is connect with the prefabricated beam mould；
The built-in electrical spool prepared hole die is fixed using the fixing tool.
3. the method for the built-in electrical spool preformed hole of production according to claim 2, which is characterized in that will be described built-in
The electrical spool prepared hole die of formula is after spiral extraction in the concrete further include:
The built-in electrical spool prepared hole die is cleaned.
4. the method for the built-in electrical spool preformed hole of production according to claim 1-3, which is characterized in that institute
Stating built-in electrical spool prepared hole die includes:
Built-in drilling section (1), for being placed in the precast beam, to form built-in electrical spool preformed hole, and it is described built-in
The lateral surface of drilling section (1) is provided with screw thread；
Exposed force section (3), for extracting built-in electrical spool prepared hole die spiral from the concrete；
Linkage section (2), for connecting built-in drilling section (1) and the exposed force section (3).
5. the method for the built-in electrical spool preformed hole of production according to claim 4, which is characterized in that described exposed to apply
The end of power section (3) is provided with the turret head for extracting the built-in electrical spool prepared hole die spiral for engagement tool
(32)。
6. the method for the built-in electrical spool preformed hole of production according to claim 5, which is characterized in that described exposed to apply
Power section (3) is provided with the threaded hole (31) for extracting the built-in electrical spool prepared hole die spiral for engagement tool,
And the central axis upright of the threaded hole (31) is in the length direction of exposed force section (3).
7. the method for the built-in electrical spool preformed hole of production according to claim 6, which is characterized in that the built-in brill
Hole section (1) is the frustum cone structure with certain taper, and the lower surface area of built-in drilling section (1) is less than upper surface face
Product.
8. the method for the built-in electrical spool preformed hole of production according to claim 7, which is characterized in that the built-in brill
Hole section is provided with hollow structure in (1)；And/or hollow structure is provided in the exposed force section (3)；And/or the connection
Hollow structure is provided in section (2).
9. the method for the built-in electrical spool preformed hole of production according to claim 8, which is characterized in that the built-in brill
The surface of hole section (1) is provided with rust-proof coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811332425.7A CN109262825A (en) | 2018-11-09 | 2018-11-09 | A method of making built-in electrical spool preformed hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811332425.7A CN109262825A (en) | 2018-11-09 | 2018-11-09 | A method of making built-in electrical spool preformed hole |
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| CN109262825A true CN109262825A (en) | 2019-01-25 |
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|---|---|---|---|
| CN201811332425.7A Pending CN109262825A (en) | 2018-11-09 | 2018-11-09 | A method of making built-in electrical spool preformed hole |
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| GB461150A (en) * | 1935-09-27 | 1937-02-11 | Hugh Alfred Routledge | A core or former for forming holes in concrete and like floors cast in situ |
| CN201092653Y (en) * | 2007-09-04 | 2008-07-30 | 上海宝冶建设有限公司 | Concrete terrace transmission rod pre-opened hole forming device |
| CN104695705A (en) * | 2015-03-25 | 2015-06-10 | 中国建筑第八工程局有限公司 | Reserved hole sleeve and method for constructing reserved hole by using same |
| CN206937564U (en) * | 2017-07-23 | 2018-01-30 | 远大住宅工业（杭州）有限公司 | A kind of embedded parts positioning device |
| CN207327271U (en) * | 2017-08-25 | 2018-05-08 | 上海建工材料工程有限公司 | A kind of embedded part position is adjustable, the repeatable PC mold tooling framves utilized |
| CN207387976U (en) * | 2017-11-02 | 2018-05-22 | 上海同凝节能科技有限公司 | A kind of concrete prefabricated element production positioning built-in fitting universal fixture frame |
| CN207553599U (en) * | 2017-11-17 | 2018-06-29 | 庄绍松 | Build concrete pours pipeline preformed hole mold |
-
2018
- 2018-11-09 CN CN201811332425.7A patent/CN109262825A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB461150A (en) * | 1935-09-27 | 1937-02-11 | Hugh Alfred Routledge | A core or former for forming holes in concrete and like floors cast in situ |
| CN201092653Y (en) * | 2007-09-04 | 2008-07-30 | 上海宝冶建设有限公司 | Concrete terrace transmission rod pre-opened hole forming device |
| CN104695705A (en) * | 2015-03-25 | 2015-06-10 | 中国建筑第八工程局有限公司 | Reserved hole sleeve and method for constructing reserved hole by using same |
| CN206937564U (en) * | 2017-07-23 | 2018-01-30 | 远大住宅工业（杭州）有限公司 | A kind of embedded parts positioning device |
| CN207327271U (en) * | 2017-08-25 | 2018-05-08 | 上海建工材料工程有限公司 | A kind of embedded part position is adjustable, the repeatable PC mold tooling framves utilized |
| CN207387976U (en) * | 2017-11-02 | 2018-05-22 | 上海同凝节能科技有限公司 | A kind of concrete prefabricated element production positioning built-in fitting universal fixture frame |
| CN207553599U (en) * | 2017-11-17 | 2018-06-29 | 庄绍松 | Build concrete pours pipeline preformed hole mold |
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Application publication date: 20190125 |
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| RJ01 | Rejection of invention patent application after publication |