CN103358393A - Mold and fabrication technology for producing reinforced concrete inspection well - Google Patents

Mold and fabrication technology for producing reinforced concrete inspection well Download PDF

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Publication number
CN103358393A
CN103358393A CN2013102387669A CN201310238766A CN103358393A CN 103358393 A CN103358393 A CN 103358393A CN 2013102387669 A CN2013102387669 A CN 2013102387669A CN 201310238766 A CN201310238766 A CN 201310238766A CN 103358393 A CN103358393 A CN 103358393A
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China
Prior art keywords
mold
mould
hole
reinforced concrete
external mold
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CN2013102387669A
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CN103358393B (en
Inventor
李建沪
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RIZHAO DONGXING URBAN COROLLARY EQUIPMENT CO Ltd
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RIZHAO DONGXING URBAN COROLLARY EQUIPMENT CO Ltd
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Priority to CN201310238766.9A priority Critical patent/CN103358393B/en
Publication of CN103358393A publication Critical patent/CN103358393A/en
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Publication of CN103358393B publication Critical patent/CN103358393B/en
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  • Moulds, Cores, Or Mandrels (AREA)
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Abstract

The invention discloses a mold for producing a reinforced concrete inspection well, which comprises an inner mold, an outer mold, a hole opening mold and a bottom mold, and is characterized in that the outer mold is mounted outside the inner mold in a sleeving manner; a pouring cavity is formed between the inner mold and the outer mold; a screw hole is formed in the inner mold; a bolt is arranged on the screw hole; one or more hanging holes are formed in the hole opening mold; the hole opening mold is fixed on the inner mold by the hanging holes; outer edge reinforcing ribs are arranged at an upper pipe orifice and a lower pipe orifice of the outer mold; and the bottom mold is fixed with the outer edge reinforcing ribs by a fixing fixture. The reinforced concrete inspection well is produced by procedures such as mold assembly, concrete pouring, mold disassembly and maintenance. The mold is simple in structure, reasonable in design, flexible to assemble and easy to pour and demold, and is suitable for volume production.

Description

A kind of mould of reinforced concrete inspection and preparation technology who produces reinforced concrete inspection thereof of producing
Technical field
The present invention relates to a kind of mould, particularly a kind of mould of reinforced concrete inspection and preparation technology who produces reinforced concrete inspection thereof of producing.
Background technology
At present, when producing large-scale tubular product such as reinforced concrete septic tank, inspection shaft etc., do not have suitable mould, production is wasted time and energy, and production efficiency is low, can not produce in enormous quantities.
Summary of the invention
Technical assignment of the present invention is that a kind of mould of reinforced concrete inspection and preparation technology who produces reinforced concrete inspection thereof of producing is provided for above the deficiencies in the prior art.
The technical solution adopted for the present invention to solve the technical problems is: a kind of mould of producing reinforced concrete inspection, comprise internal mold, external mold, hole mould and bed die, described outer die casing is contained in outside the internal mold, and form a cast cavity between internal mold and the adventitia, be provided with screw on the described internal mold, be provided with bolt on the screw, be provided with one or more holes of hanging on the mould of hole, the hole mould is fixed on the internal mold by hanging the hole, described external mold is provided with the outer reinforcement in two mouth of pipe places up and down, and bed die is fixed by stationary fixture and outer reinforcement.
Be provided with the matched moulds seam on the described internal mold, and be welded with respectively reinforcement at the inwall matched moulds seam seam of internal mold along the place, reinforcement and internal mold are as a whole, and the place is provided with active clapboard at internal mold matched moulds seam, is connected with expansion bolt between matched moulds seam place two reinforcements.
Be provided with the matched moulds seam on the described external mold, and the outer wall matched moulds seam seam at external mold is welded with respectively keel along the place, be provided with set bolt and expansion bolt on the keel, described keel top, be provided with hole for hoist with outer reinforcement connecting place, be symmetrically arranged with the upset rotating shaft on the described external mold, also be provided with several keel on the described external mold outer wall, be symmetrically arranged with two screws on the described external mold lower part wall, be connected with product hole for hoist bolt on the screw, be provided with the hole of marking time on the described external mold, be provided with the mould of marking time that matches with the hole of marking time on the hole of marking time, the mould of marking time is fixed by set bolt and external mold.
Described internal mold and external mold are cylindrical shape or rectangle.
Matched moulds seam on the described external mold is one or more.
The matched moulds seam of described rectangle internal mold and rectangle external mold is arranged on the place, diagonal angle.
Described hole mould is circle or rectangle.
Described upset rotating shaft can also replace with tumble port.
The described mould of marking time is comprised of fixed head, housing and cylinder, is provided with housing on the described fixed head, is provided with two cylinders on the described housing.
A kind of preparation technology who produces reinforced concrete inspection may further comprise the steps:
⑴ be placed on bed die on the level land first, again with internal mold by being placed on the bed die, rotate expansion bolt, enlarge the inner membrance internal diameter, make it contact driving fit with bed die, and add a cover base plate on inner membrance top, place hole mould and framework of steel reinforcement in the periphery of internal mold, outside then outer die casing being contained in, and tighten each screw;
⑵ in the cavity between internal mold and the external mold, and repair smooth with vibrations utensil vibration compacting the pouring concrete that stirs;
⑶ unload stationary fixture behind concrete coagulation, bed die is unloaded, then unclamp bolt, take down active clapboard, turn expansion bolt, dwindle interior mode diameter, sling and unload core insert, put on the ground after then turning over turnback, unclamp the set bolt on the external mold keel, turn expansion bolt, after matched moulds seam backed down, expanded outer diameter was sling and external mold is deviate from;
⑷ be lifted into the place by the hole of hanging on the inspection shaft with inspection shaft;
⑸ after the demoulding, mould is cleaned up maintenance for subsequent use.
The present invention has following beneficial effect:
Simple in structure, reasonable in design, assembling is easy to pour into a mould the demoulding flexibly, is fit to produce in enormous quantities.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is internal model structure schematic diagram of the present invention.
Fig. 3 is the mode structure schematic diagram of marking time of the present invention.
The specific embodiment
Below in conjunction with Figure of description the present invention is done following detailed explanation.
As shown in the figure, a kind of mould of producing reinforced concrete inspection, comprise internal mold 1, external mold 2, hole mould 4 and bed die 3, described external mold 2 is sleeved on outside the internal mold 1, and form a cast cavity between internal mold 1 and the adventitia 2, be provided with screw 5 on the described internal mold 1, be provided with bolt on the screw 5, be provided with one or more holes 6 of hanging on the hole mould 3, hole mould 4 is fixed on the internal mold by hanging hole 6, described external mold is provided with outer reinforcement 208 in two mouth of pipe places about in the of 2, and bed die 3 is fixing by stationary fixture and outer reinforcement 208.
Be provided with the matched moulds seam on the described internal mold 1, and the inwall matched moulds seam seam at internal mold 1 is welded with respectively reinforcement 101 along the place, reinforcement 101 is as a whole with internal mold 1, and 1 matched moulds seam place is provided with active clapboard 103 at internal mold, is connected with expansion bolt 104 between matched moulds seam place two reinforcements 101.
 
Be provided with the matched moulds seam on the described external mold 2, and the outer wall matched moulds seam seam at external mold 2 is welded with respectively keel 202 along the place, be provided with set bolt 102 and expansion bolt 104 on the keel 202, described keel 202 tops, be provided with hole for hoist 201 with outer reinforcement 208 connecting places, be symmetrically arranged with upset rotating shaft 203 on the described external mold 2, also be provided with several keel 202 on described external mold 2 outer walls, be symmetrically arranged with two screws 205 on described external mold 2 lower part walls, be connected with product hole for hoist bolt 206 on the screw 205, be provided with the hole 209 of marking time on the described external mold 2, marking time is provided with the mould 7 of marking time that matches with the hole 209 of marking time on the hole 209, and the mould 7 of marking time is fixing by set bolt and external mold 2
Described internal mold 1 is cylindrical shape or rectangle with external mold 2.
Described internal mold 1 and adventitia 2 are made by steel plate.
Described hole mould 4 is circle or rectangle.
Described upset rotating shaft 203 can also replace with tumble port.
The described mould 7 of marking time is comprised of fixed head 701, housing 702 and cylinder 703, is provided with housing 702 on the described fixed head 701, is provided with two cylinders 703 on the described housing 702.
A kind of preparation technology who produces reinforced concrete inspection may further comprise the steps:
⑴ be placed on bed die on the level land first, again with internal mold by being placed on the bed die, rotate expansion bolt, enlarge the inner membrance internal diameter, make it contact driving fit with bed die, and add a cover base plate on inner membrance top, place hole mould and framework of steel reinforcement in the periphery of internal mold, outside then outer die casing being contained in, and tighten each screw;
⑵ in the cavity between internal mold and the external mold, and repair smooth with vibrations utensil vibration compacting the pouring concrete that stirs;
⑶ unload stationary fixture behind concrete coagulation, bed die is unloaded, then unclamp bolt, take down active clapboard, turn expansion bolt, dwindle interior mode diameter, sling and unload core insert, put on the ground after then turning over turnback, unclamp the set bolt on the external mold keel, turn expansion bolt, after matched moulds seam backed down, expanded outer diameter was sling and external mold is deviate from;
⑷ be lifted into the place by the hole of hanging on the inspection shaft with inspection shaft;
⑸ after the demoulding, mould is cleaned up maintenance for subsequent use.

Claims (10)

1. mould of producing reinforced concrete inspection, comprise internal mold, external mold, hole mould and bed die, it is characterized in that: described outer die casing is contained in outside the internal mold, and form a cast cavity between internal mold and the adventitia, be provided with screw on the described internal mold, be provided with bolt on the screw, be provided with one or more holes of hanging on the mould of hole, the hole mould is fixed on the internal mold by hanging the hole, and described external mold is provided with the outer reinforcement in two mouth of pipe places up and down, and bed die is fixed by stationary fixture and outer reinforcement.
2. a kind of mould of producing reinforced concrete inspection according to claim 1, it is characterized in that: be provided with the matched moulds seam on the described internal mold, and the inwall matched moulds seam seam at internal mold is welded with respectively reinforcement along the place, reinforcement and internal mold are as a whole, the place is provided with active clapboard at internal mold matched moulds seam, is connected with expansion bolt between matched moulds seam place two reinforcements.
3. a kind of mould of producing reinforced concrete inspection according to claim 1, it is characterized in that: be provided with the matched moulds seam on the described external mold, and the outer wall matched moulds seam seam at external mold is welded with respectively keel along the place, be provided with set bolt and expansion bolt on the keel, described keel top, be provided with hole for hoist with outer reinforcement connecting place, be symmetrically arranged with the upset rotating shaft on the described external mold, also be provided with several keel on the described external mold outer wall, be symmetrically arranged with two screws on the described external mold lower part wall, be connected with product hole for hoist bolt on the screw, be provided with the hole of marking time on the described external mold, marking time is provided with the mould of marking time that matches with the hole of marking time on the hole, and the mould of marking time is fixed by set bolt and external mold.
4. a kind of mould of producing reinforced concrete inspection according to claim 1, it is characterized in that: described internal mold and external mold are cylindrical shape or rectangle.
5. a kind of mould of producing reinforced concrete inspection according to claim 1 is characterized in that: the matched moulds seam on described internal mold and the external mold is one or more.
6. a kind of mould of producing reinforced concrete inspection according to claim 4 is characterized in that: the matched moulds seam of described rectangle internal mold and rectangle external mold is arranged on the place, diagonal angle.
7. a kind of mould of producing reinforced concrete inspection according to claim 1, it is characterized in that: described hole mould is circle or rectangle.
8. a kind of mould of producing reinforced concrete inspection according to claim 3, it is characterized in that: described upset rotating shaft can also replace with tumble port.
9. a kind of mould of producing reinforced concrete inspection according to claim 3, it is characterized in that: the described mould of marking time is comprised of fixed head, housing and cylinder, is provided with housing on the described fixed head, is provided with two cylinders on the described housing.
10. a preparation technology who produces reinforced concrete inspection is characterized in that, may further comprise the steps:
⑴ be placed on bed die on the level land first, again with internal mold by being placed on the bed die, rotate expansion bolt, enlarge the inner membrance internal diameter, make it contact driving fit with bed die, and add a cover base plate on inner membrance top, place hole mould and framework of steel reinforcement in the periphery of internal mold, outside then outer die casing being contained in, and tighten each screw;
⑵ in the cavity between internal mold and the external mold, and repair smooth with vibrations utensil vibration compacting the pouring concrete that stirs;
⑶ unload stationary fixture behind concrete coagulation, bed die is unloaded, then unclamp bolt, take down active clapboard, turn expansion bolt, dwindle interior mode diameter, sling and unload core insert, put on the ground after then turning over turnback, unclamp the set bolt on the external mold keel, turn expansion bolt, after matched moulds seam backed down, expanded outer diameter was sling and external mold is deviate from;
⑷ be lifted into the place by the hole of hanging on the inspection shaft with inspection shaft;
⑸ after the demoulding, mould is cleaned up maintenance for subsequent use.
CN201310238766.9A 2013-06-17 2013-06-17 A kind of mould producing reinforced concrete inspection and the preparation technology of production reinforced concrete inspection thereof Active CN103358393B (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103750607A (en) * 2014-02-14 2014-04-30 深圳市百泰珠宝首饰有限公司 Gold jewelry and processing method thereof
CN104786349A (en) * 2015-05-06 2015-07-22 重庆海德冶金材料有限责任公司 Splash-proof tundish current regulator forming device
CN104802290A (en) * 2015-05-06 2015-07-29 重庆海德冶金材料有限责任公司 Tundish current regulator molding die
CN105599118A (en) * 2015-10-30 2016-05-25 湖北朗驰新型材料有限公司 Device and method for manufacturing plaster mold
CN106696063A (en) * 2016-02-22 2017-05-24 陈开银 Integrated prefabricated mold utilizing indirect extrusion vibration method and processing method thereof
CN106863552A (en) * 2016-12-21 2017-06-20 陈开银 The direct extrusion and vibration method integrally forming mould of cement prefab and its processing method
CN106914982A (en) * 2017-03-27 2017-07-04 江苏宝宸净化设备股份有限公司 A kind of concrete barrel containers steel pours mould and its assembling, method for dismounting
CN107165254A (en) * 2017-06-28 2017-09-15 广州市第三市政工程有限公司 A kind of inlet for stom water mould
CN107460829A (en) * 2017-09-05 2017-12-12 方菱桥隧模架(福州)有限公司 Bridge pier punching block installs protector and its installation method
CN108673727A (en) * 2018-07-06 2018-10-19 江苏华光双顺机械制造有限公司 A kind of vertical vibrating concrete reinforced pipe punching block is buckled with lock dish
CN108890872A (en) * 2018-06-27 2018-11-27 湖北兴葆科技有限责任公司 A kind of precast inspection well mold and its technique for making inspection shaft
CN111691481A (en) * 2020-06-17 2020-09-22 无锡市航道工程有限公司 Immersed tube construction process for laying sewage interception main pipe
CN112092154A (en) * 2019-06-17 2020-12-18 陕西晟泰源水泥制品有限公司 Prefabricated inspection well preformed hole forming device and forming method
CN112388797A (en) * 2019-08-13 2021-02-23 陕西晟泰源水泥制品有限公司 Device and method for preparing concrete inspection well through high-frequency vibration
CN117428918A (en) * 2023-10-24 2024-01-23 江苏瀚能电气有限公司 Prefabricated UHPC rainwater well integrated construction method and device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3400349A1 (en) * 1984-01-07 1985-07-18 Prinzing Georg Gmbh Co Kg Process and device for producing mouldings from concrete
WO2005032781A1 (en) * 2003-10-07 2005-04-14 Vertech Hume Pty Ltd Vertical moulding of long concrete articles
CN201981780U (en) * 2011-01-31 2011-09-21 日照市东兴城市配套设备有限公司 Mold for manufacturing of cylindrical structures
CN202644990U (en) * 2012-06-01 2013-01-02 中建三局建设工程股份有限公司 Fixing device for reserved pipeline or hole template
CN103088844A (en) * 2013-03-04 2013-05-08 济南城建集团有限公司 Reinforced concrete inspection well whole prefabricated hoisting construction method
CN203471924U (en) * 2013-06-17 2014-03-12 日照市东兴城市配套设备有限公司 Die for production of reinforced concrete-made inspection well

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3400349A1 (en) * 1984-01-07 1985-07-18 Prinzing Georg Gmbh Co Kg Process and device for producing mouldings from concrete
WO2005032781A1 (en) * 2003-10-07 2005-04-14 Vertech Hume Pty Ltd Vertical moulding of long concrete articles
CN201981780U (en) * 2011-01-31 2011-09-21 日照市东兴城市配套设备有限公司 Mold for manufacturing of cylindrical structures
CN202644990U (en) * 2012-06-01 2013-01-02 中建三局建设工程股份有限公司 Fixing device for reserved pipeline or hole template
CN103088844A (en) * 2013-03-04 2013-05-08 济南城建集团有限公司 Reinforced concrete inspection well whole prefabricated hoisting construction method
CN203471924U (en) * 2013-06-17 2014-03-12 日照市东兴城市配套设备有限公司 Die for production of reinforced concrete-made inspection well

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103750607B (en) * 2014-02-14 2016-04-20 深圳市百泰珠宝首饰有限公司 The processing method of a kind of gold jewelry and gold jewelry
CN103750607A (en) * 2014-02-14 2014-04-30 深圳市百泰珠宝首饰有限公司 Gold jewelry and processing method thereof
CN104786349A (en) * 2015-05-06 2015-07-22 重庆海德冶金材料有限责任公司 Splash-proof tundish current regulator forming device
CN104802290A (en) * 2015-05-06 2015-07-29 重庆海德冶金材料有限责任公司 Tundish current regulator molding die
CN104786349B (en) * 2015-05-06 2022-12-20 重庆海德冶金材料有限责任公司 Splash-proof tundish current stabilizer forming device
CN105599118B (en) * 2015-10-30 2018-06-08 湖北朗驰新型材料有限公司 A kind of device and production method for making gypsum mold
CN105599118A (en) * 2015-10-30 2016-05-25 湖北朗驰新型材料有限公司 Device and method for manufacturing plaster mold
CN106696063A (en) * 2016-02-22 2017-05-24 陈开银 Integrated prefabricated mold utilizing indirect extrusion vibration method and processing method thereof
CN106696063B (en) * 2016-02-22 2022-05-27 陈开银 Integral prefabricated die utilizing indirect extrusion vibration method and machining method thereof
CN106863552A (en) * 2016-12-21 2017-06-20 陈开银 The direct extrusion and vibration method integrally forming mould of cement prefab and its processing method
CN106863552B (en) * 2016-12-21 2022-05-31 陈开银 Integral forming die for cement prefabricated member by direct extrusion vibration method and processing method thereof
CN106914982A (en) * 2017-03-27 2017-07-04 江苏宝宸净化设备股份有限公司 A kind of concrete barrel containers steel pours mould and its assembling, method for dismounting
CN107165254A (en) * 2017-06-28 2017-09-15 广州市第三市政工程有限公司 A kind of inlet for stom water mould
CN107460829A (en) * 2017-09-05 2017-12-12 方菱桥隧模架(福州)有限公司 Bridge pier punching block installs protector and its installation method
CN107460829B (en) * 2017-09-05 2023-06-30 方菱桥隧模架(福州)有限公司 Bridge pier steel mould installation protection device and installation method thereof
CN108890872B (en) * 2018-06-27 2020-11-10 湖北兴葆科技有限责任公司 Prefabricated inspection well mould
CN108890872A (en) * 2018-06-27 2018-11-27 湖北兴葆科技有限责任公司 A kind of precast inspection well mold and its technique for making inspection shaft
CN108673727A (en) * 2018-07-06 2018-10-19 江苏华光双顺机械制造有限公司 A kind of vertical vibrating concrete reinforced pipe punching block is buckled with lock dish
CN112092154A (en) * 2019-06-17 2020-12-18 陕西晟泰源水泥制品有限公司 Prefabricated inspection well preformed hole forming device and forming method
CN112388797A (en) * 2019-08-13 2021-02-23 陕西晟泰源水泥制品有限公司 Device and method for preparing concrete inspection well through high-frequency vibration
CN111691481A (en) * 2020-06-17 2020-09-22 无锡市航道工程有限公司 Immersed tube construction process for laying sewage interception main pipe
CN117428918A (en) * 2023-10-24 2024-01-23 江苏瀚能电气有限公司 Prefabricated UHPC rainwater well integrated construction method and device
CN117428918B (en) * 2023-10-24 2024-04-19 江苏瀚能电气有限公司 Prefabricated UHPC rainwater well integrated construction method and device

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