CN205438850U - Concrete steel construction test blocks conservation device - Google Patents
Concrete steel construction test blocks conservation device Download PDFInfo
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- CN205438850U CN205438850U CN201620259524.7U CN201620259524U CN205438850U CN 205438850 U CN205438850 U CN 205438850U CN 201620259524 U CN201620259524 U CN 201620259524U CN 205438850 U CN205438850 U CN 205438850U
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Abstract
Concrete steel construction test blocks conservation device includes that the hand propelled send waterwheel, pure water purification system and curing box, and pure water purification system establishes on the hand propelled send the waterwheel, be equipped with the spraying pump on the outer wall of curing box top, the curing box lateral wall is equipped with pure water pipe along the vertical direction, and pure water pipe upper end is connected with the water inlet of spraying pump, and pure water pipe lower extreme and pure water purification system's pure water outlet is connected, and curing box top inner wall is equipped with atomizing device, and the delivery port of the pump of spraying is connected with atomizing device's water inlet, is equipped with on the spray pipe to seal up supply solenoid valve. The utility model provides a hand propelled send the waterwheel can take pure water purification system to carry out humidification spraying operation for each curing box to adopt quick -operation joint, easy dismounting is swift, has improved work efficiency greatly, and in addition, pure water purification system becomes the pure water with well water or running water purifying and filtering, has avoided pipeline and atomizing device's jam like this, prolongs its life.
Description
Technical field
This utility model belongs to construction engineering technical field, is specifically related to a kind of concrete steel structure test block maintenance device.
Background technology
After concrete formation, the hydration and hardening good in order to ensure concrete, the environmental condition such as humidity that its outside need is certain and temperature, " standard for test methods of mechanical properties of ordinary concrete " (GB/T50081-2002) specifies: use the concrete steel structure test block of standard curing, should be immediately placed in temperature after form removal is 20 ± 2 DEG C, relative humidity is the fog room maintenance of more than 95%, or maintenance in the Ca that do not flows (OH) 2 saturated solution that temperature is 20 ± 2 DEG C.Therefore, after the concrete steel structure test block demoulding, must directly move into the maintenance of concrete curing indoor, in fog room, control the temperature and humidity in fog room by air-conditioning device and atomisation device.But the concrete curing chamber of routine is in use commonly present problems with, first: concrete curing chamber's water is often subsoil water, and impurity is more, the existing usual aperture of fog room atomising device is less, after using a period of time, often produce atomising device blocking, cause atomising device to spray；Second: owing to fog room has multiple, distant between adjacent fog room, each fog room is equipped with a water pump and the pipeline that draws water is that atomising device supplies water, and thus considerably increases cost.
Utility model content
This utility model is in order to solve weak point of the prior art, it is provided that a kind of automaticity is high, labor intensity is little, work efficiency is high, low cost and can regulate be atomized the water yield, concrete steel structure test block maintenance device that purification water prevents shower nozzle from blocking.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that concrete steel structure test block maintenance device, and including hand propelled water trolley, pure water cleaning system and curing box, pure water cleaning system is located on hand propelled water trolley；Pure water cleaning system includes storage tank, filter, suction pump and pure water tank, it is connected by water inlet pipe between storage tank with filter, suction pump is located on water inlet pipe, water inlet pipe is provided with water intaking valve, it is connected by outlet pipe between filter with pure water tank, outlet pipe is provided with outlet valve, and the outlet of pure water tank connects feed pipe, and the outlet of feed pipe is provided with snap joint；
nullCuring box side is provided with chamber door，Door handle it is provided with outside chamber door，Curing box and chamber door all use double-deck stainless steel to make，Adiabator layer it is filled with between double-deck stainless steel，It is provided with band between chamber door surrounding and curing box，Curing box inner bottom part is provided with support，On support, level is provided with web plate，Curing box medial wall is provided with temperature sensor and humidity sensor，Curing box top inner wall is provided with air-conditioning device，Curing box top exterior walls is provided with atomizing pump，Curing box lateral wall is vertically provided with pure water pipe，Pure water pipe upper end is connected with the water inlet of atomizing pump，Pure water pipe lower end exports with the pure water of pure water cleaning system and is connected，Curing box top inner wall is provided with atomising device，The outlet of atomizing pump is connected with the water inlet of atomising device by sparge pipe，On sparge pipe, the position at neighbouring atomizing pump is provided with sealing supply solenoid valve.
Seal supply solenoid valve and include valve body, long-neck valve gap, handwheel, flap and valve rod, valve body, long-neck valve gap and valve rod are all adopted made of plastic, flap is made up of magnetic material, body top is uncovered and fixing with long-neck valve gap sealed bottom to be connected, and body top is provided with electric magnet around long-neck valve gap periphery；Valve inner hollow and left and right open at both ends, flap structure in disk form, it is provided with in valve body and seals, with flap lower surface, the support ring coordinated, valve rod lower end is fixing with flap upper surface center to be connected, stem lower portion is arranged with the first compression spring, the top and bottom of the first compression spring respectively with body top inwall and the top press-fit of flap upper surface, valve body is symmetrical about the axis of valve rod；Valve rod and long-neck valve gap are coaxially set, valve rod is coaxial be plugged in long-neck valve gap in and extend into valve inner, be connected by rotary seal between valve rod top with long-neck valve gap inwall, valve rod upper end is connected with handwheel center.
Handwheel is provided with the first groove of open top, is provided with sealing compensation mechanism in the first groove；Sealing compensation mechanism includes the second compression spring, spring capping and adjusting nut, spring capping top outer edge is protruded and is provided with pressure ring, spring capping is provided with the second groove of open top, adjusting nut is positioned at the second groove, handwheel center is provided with six rib holes, valve rod top is provided through six rib holes six prism structures coordinated with six rib hole transmissions, threaded with adjusting nut after sequentially passing through handwheel and spring capping in valve rod upper end, second compression spring is set in outside spring capping, second compression spring top and bottom respectively with pressure ring and the first bottom portion of groove top press-fit；Being filled with filler between long-neck valve lid upper inside wall and valve rod outer wall, on long-neck valve lid, end is provided with the gland compressing filler, is coated with the packing ring being positioned on gland outside valve rod, and handwheel lower surface is by packing ring and gland press fit.
Filter includes that external form is the container of rectangular shape, container inner wall offers cannelure, container top offers the opening of connection corresponding with cannelure, it is inserted with in cannelure by opening and cavity is separated into clear water chamber and the drainage screen in pure water chamber, one end top is provided with the clear water entrance connected by water inlet pipe with clear water chamber, container other end top is provided with the pure water outlet connected by outlet pipe with pure water chamber, container inner wall is provided with and is positioned at drainage screen both sides and all in cross bracing frame, container top is connected by fastening bolt pressing plate, pressing plate lower surface is provided with indent, it is provided with top in opening and protrudes from the sealing strip of indent top edge, cushion block it is provided with in indent, cushion block lower surface and sealing strip upper surface press fit.
Using technique scheme, curing box is when work uses, and concrete test block is placed on web plate, and web plate is the most penetrating, can make also can obtain bottom concrete test block suitable maintenance.When the humidity sensor in curing box send signal demand carry out in curing box spraying supply water time, staff promotes hand propelled water trolley to shift pure water cleaning system onto curing box side, the import of snap joint with pure water pipe lower end is quickly connected, open atomizing pump and the electric magnet sealed on supply solenoid valve, seal supply solenoid valve to open, pure water in pure water tank is upwards taken out by atomizing pump, pure water is humidified to curing box internal spraying through atomising device, humidity sensor sends after signal reaches humidity requirement, atomizing pump and the electric magnet power-off sealed on supply solenoid valve stop.Temperature in curing box is coordinated to be controlled by temperature sensor and air-conditioning device.
Pure water in pure water tank can at any time carry out purification filtering operation, concrete cleaned filtration is referred to as: open suction pump, the clear water stored in suction pump extraction storage tank is in water inlet pipe enters into filter, and clear water is filtered through drainage screen rear impurity, and pure water enters in pure water tank.After the impurity of attachment is more on drainage screen, back out fastening bolt, taking off pressing plate and cushion block, pluck out sealing strip, use hook to be extracted out in cannelure by drainage screen, then replace with new drainage screen, then seal fastening.Cross bracing frame plays and prevents from hydraulic pressure that drainage screen is pressed into concave structure making drainage screen detach cannelure.
Use the pure water after filtration, purification, atomising device so can be made not have blocking, extend the service life of atomising device.
Seal supply solenoid valve to be arranged on sparge pipe, the injection flow rate of atomising device can be adjusted and play good sealing function.The concrete operations principle and the process that seal supply solenoid valve are as follows: power for electric magnet while starting booster water pump, electric magnet attracts the flap of magnetic, flap overcomes the sub-profit of the first spring to depart from support ring, seal supply solenoid valve to open, current pass through, and according to electric magnet provides the size of electric current, the distance between regulation support ring and flap reaches to adjust the purpose of discharge.Additionally seal and play sealing function by filler between valve rod and long-neck valve gap on supply solenoid valve, and use the gland being located on long-neck valve lid end to compress filler, more optimize is to be provided with packing ring between gland and handwheel, and sealing effectiveness is more preferable；The sealing compensation mechanism in the first groove on handwheel is made up of the second compression spring, spring capping and adjusting nut, after filler between valve rod and long-neck valve gap is impaired, overall sealing performance declines, now adjustment turns adjusting nut and makes the second downward pressing handwheel of compression spring, handwheel compresses filler further by gland, ensure that the sealing property sealing supply solenoid valve.
In sum, hand propelled water trolley in this utility model can be that each curing box carries out the spraying operation that is humidified with pure water cleaning system, and use snap joint, convenient to disassembly, substantially increase work efficiency, it addition, well water or tap water purifying are filtered by pure water cleaning system becomes pure water, this avoid the blocking of pipeline and atomising device, extend its service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation sealing supply solenoid valve in Fig. 1；
Fig. 3 is the enlarged drawing in Fig. 2 at A；
Fig. 4 is the structural representation of filter in Fig. 1.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, concrete steel structure test block maintenance device of the present utility model, including hand propelled water trolley 1, pure water cleaning system and curing box 2, pure water cleaning system is located on hand propelled water trolley 1；Pure water cleaning system includes storage tank 50, filter 51, suction pump 52 and pure water tank 53, it is connected by water inlet pipe 54 between storage tank 50 with filter 51, suction pump 52 is located on water inlet pipe 54, water inlet pipe 54 is provided with water intaking valve 55, being connected by outlet pipe 56 between filter 51 with pure water tank 53, outlet pipe 56 is provided with outlet valve 57；The outlet of pure water tank 53 connects has feed pipe 2, the outlet of feed pipe 2 to be provided with snap joint 3.
nullFilter 51 includes that external form is the container 58 of rectangular shape，Container 58 inwall offers cannelure，Container 58 top offers the opening of connection corresponding with cannelure，In cannelure, the drainage screen 61 that cavity is separated into clear water chamber 59 and pure water chamber 60 it is inserted with by opening，Top, container 58 one end is provided with the clear water entrance 62 connected by water inlet pipe 54 with clear water chamber 59，Container 58 other end top is provided with the pure water outlet 63 connected by outlet pipe 56 with pure water chamber 60，Container 58 inwall is provided with and is positioned at drainage screen 61 both sides and all in cross bracing frame 63，Container 58 top is connected by fastening bolt 64 pressing plate 65，Pressing plate 65 lower surface is provided with indent，It is provided with top in opening and protrudes from the sealing strip 66 of indent top edge，Cushion block 67 it is provided with in indent，Cushion block 67 lower surface and sealing strip 66 upper surface press fit.
nullCuring box 2 side is provided with chamber door 4，Door handle 5 it is provided with outside chamber door 4，Curing box 2 and chamber door 4 all use double-deck stainless steel to make，Adiabator layer 6 it is filled with between double-deck stainless steel，Band 7 it is provided with between chamber door 4 surrounding and curing box 2，Curing box 2 inner bottom part is provided with support 8，On support 8, level is provided with web plate 9，Curing box 2 medial wall is provided with temperature sensor 10 and humidity sensor 11，Curing box 2 top inner wall is provided with air-conditioning device 12，Curing box 2 top exterior walls is provided with atomizing pump 13，Curing box 2 lateral wall is vertically provided with pure water pipe 14，Pure water pipe 14 upper end is connected with the water inlet of atomizing pump 13，Pure water pipe 14 lower end exports 63 with the pure water of pure water cleaning system and is connected，Curing box 2 top inner wall is provided with atomising device 15，The outlet of atomizing pump 13 is connected with the water inlet of atomising device 15 by sparge pipe 16，On sparge pipe 16, the position at neighbouring atomizing pump 13 is provided with sealing supply solenoid valve 27.
Seal supply solenoid valve 27 and include valve body 30, long-neck valve gap 31, handwheel 32, flap 33 and valve rod 34, valve body 30, long-neck valve gap 31 and valve rod 34 are all adopted made of plastic, flap 33 is made up of magnetic material, valve body 30 open top also fixing with long-neck valve gap 31 sealed bottom is connected, and valve body 30 top is provided with electric magnet 35 around long-neck valve gap 31 periphery；Valve body 30 inner hollow and left and right open at both ends, flap 33 structure in disk form, it is provided with in valve body 30 and seals, with flap 33 lower surface, the support ring 36 coordinated, valve rod 34 lower end is fixing with flap 33 upper surface center to be connected, valve rod 34 bottom is arranged with the first compression spring, the top and bottom of the first compression spring respectively with valve body 30 top inner wall and the top press-fit of flap 33 upper surface, valve body 30 is symmetrical about the axis of valve rod 34；Valve rod 34 and long-neck valve gap 31 are coaxially set, valve rod 34 is coaxial be plugged in long-neck valve gap 31 in and to extend into valve body 30 internal, be connected by rotary seal between valve rod 34 top with long-neck valve gap 31 inwall, valve rod 34 upper end is connected with handwheel 32 center.
Handwheel 32 is provided with the first groove 37 of open top, is provided with sealing compensation mechanism in the first groove 37；Sealing compensation mechanism includes the second compression spring 38, spring capping 39 and adjusting nut 40, spring capping 39 top outer edge is protruded and is provided with pressure ring 41, spring capping 39 is provided with the second groove of open top, adjusting nut 40 is positioned at the second groove, handwheel 32 center is provided with six rib holes, valve rod 34 top is provided through six rib holes six prism structures 45 coordinated with six rib hole transmissions, threaded with adjusting nut 40 after sequentially passing through handwheel 32 and spring capping 39 in valve rod 34 upper end, second compression spring 38 is set in outside spring capping 39, press-fit is pushed up with bottom pressure ring 41 and the first groove 37 respectively in second compression spring 38 top and bottom；It is filled with filler 42 between long-neck valve gap 31 upper inside wall and valve rod 34 outer wall, long-neck valve gap 31 upper end is provided with the gland 43 compressing filler 42, being coated with the packing ring 44 being positioned on gland 43 outside valve rod 34, handwheel 32 lower surface is by packing ring 44 and gland 43 press fit.
This utility model is when work uses, and curing box 2 is when work uses, and concrete test block 17 is placed on web plate 9, and web plate about 9 is penetrating, can make also can obtain bottom concrete test block 17 suitable maintenance.When the humidity sensor 11 in curing box 2 send signal demand carry out in curing box 2 spraying supply water time, staff promotes hand propelled water trolley 1 that pure water cleaning system is shifted onto curing box 2 side, the import of snap joint 3 with pure water pipe 14 lower end is quickly connected, open atomizing pump 13 and the electric magnet 35 sealed on supply solenoid valve 27, seal supply solenoid valve 27 to open, pure water in pure water tank is upwards taken out by atomizing pump 13, pure water is humidified to curing box 2 internal spraying through atomising device 15, humidity sensor 11 sends after signal reaches humidity requirement, atomizing pump 13 and electric magnet 35 power-off sealed on supply solenoid valve 27 stop.Temperature in curing box 2 is coordinated to be controlled by temperature sensor 10 and air-conditioning device 12.
Use the pure water after filtration, purification, atomising device 15 so can be made not have blocking, extend the service life of atomising device 15.
Pure water in pure water tank 53 can at any time carry out purification filtering operation, concrete cleaned filtration is referred to as: open suction pump 52, the clear water that suction pump 52 stores in extracting storage tank 50 is in water inlet pipe 54 enters into filter 51, clear water is filtered through drainage screen 61 rear impurity, and pure water enters in pure water tank 53.After the impurity of attachment is more on drainage screen 61, back out fastening bolt 64, taking off pressing plate 65 and cushion block 67, pluck out sealing strip 66, use hook to be extracted out in cannelure by drainage screen 61, then replace with new drainage screen 61, then seal fastening.Cross bracing frame 63 plays and prevents from hydraulic pressure that drainage screen 61 is pressed into concave structure making drainage screen 61 detach cannelure.
Seal supply solenoid valve 27 to be arranged on sparge pipe 16, injection flow rate can be adjusted and play good sealing function.The concrete operations principle and the process that seal supply solenoid valve 27 are as follows: power for electric magnet 35 while starting booster water pump 1, electric magnet 35 attracts the flap 33 of magnetic, flap 33 overcomes the sub-profit of the first spring to depart from support ring 36, seal supply solenoid valve 27 to open, current pass through, and according to electric magnet 35 provides the size of electric current, the distance between regulation support ring 36 and flap 33 reaches to adjust the purpose of discharge.Additionally seal and play sealing function by filler 42 between valve rod 34 and long-neck valve gap 31 on supply solenoid valve 27, and use the gland 43 being located on long-neck valve lid end to compress filler 42, more optimize is to be provided with packing ring 44 between gland 43 and handwheel 32, and sealing effectiveness is more preferable；The sealing compensation mechanism in the first groove 37 on handwheel 32 is made up of the second compression spring 38, spring capping 39 and adjusting nut 40, after filler 42 between valve rod 34 and long-neck valve gap is impaired, overall sealing performance declines, now adjustment turns adjusting nut 40 and makes the second downward pressing handwheel 32 of compression spring 38, handwheel 32 compresses filler 42 further by gland 43, ensure that the sealing property sealing supply solenoid valve 27.
Above example is only in order to illustrative not limiting the technical solution of the utility model, although this utility model being described in detail with reference to above-described embodiment, it will be understood by those within the art that: still this utility model can be modified or equivalent, without deviating from any modification or partial replacement of spirit and scope of the present utility model, it all should be contained in the middle of right of the present utility model.
Claims (4)
1. concrete steel structure test block maintenance device, it is characterised in that: including hand propelled water trolley, pure water cleaning system and curing box, pure water cleaning system is located on hand propelled water trolley；Pure water cleaning system includes storage tank, filter, suction pump and pure water tank, it is connected by water inlet pipe between storage tank with filter, suction pump is located on water inlet pipe, water inlet pipe is provided with water intaking valve, it is connected by outlet pipe between filter with pure water tank, outlet pipe is provided with outlet valve, and the outlet of pure water tank connects feed pipe, and the outlet of feed pipe is provided with snap joint；
nullCuring box side is provided with chamber door，Door handle it is provided with outside chamber door，Curing box and chamber door all use double-deck stainless steel to make，Adiabator layer it is filled with between double-deck stainless steel，It is provided with band between chamber door surrounding and curing box，Curing box inner bottom part is provided with support，On support, level is provided with web plate，Curing box medial wall is provided with temperature sensor and humidity sensor，Curing box top inner wall is provided with air-conditioning device，Curing box top exterior walls is provided with atomizing pump，Curing box lateral wall is vertically provided with pure water pipe，Pure water pipe upper end is connected with the water inlet of atomizing pump，Pure water pipe lower end exports with the pure water of pure water cleaning system and is connected，Curing box top inner wall is provided with atomising device，The outlet of atomizing pump is connected with the water inlet of atomising device by sparge pipe，On sparge pipe, the position at neighbouring atomizing pump is provided with sealing supply solenoid valve.
Concrete steel structure test block maintenance device the most according to claim 1, it is characterized in that: seal supply solenoid valve and include valve body, long-neck valve gap, handwheel, flap and valve rod, valve body, long-neck valve gap and valve rod are all adopted made of plastic, flap is made up of magnetic material, body top is uncovered and fixing with long-neck valve gap sealed bottom to be connected, and body top is provided with electric magnet around long-neck valve gap periphery；Valve inner hollow and left and right open at both ends, flap structure in disk form, it is provided with in valve body and seals, with flap lower surface, the support ring coordinated, valve rod lower end is fixing with flap upper surface center to be connected, stem lower portion is arranged with the first compression spring, the top and bottom of the first compression spring respectively with body top inwall and the top press-fit of flap upper surface, valve body is symmetrical about the axis of valve rod；Valve rod and long-neck valve gap are coaxially set, valve rod is coaxial be plugged in long-neck valve gap in and extend into valve inner, be connected by rotary seal between valve rod top with long-neck valve gap inwall, valve rod upper end is connected with handwheel center.
Concrete steel structure test block maintenance device the most according to claim 2, it is characterised in that: handwheel is provided with the first groove of open top, is provided with sealing compensation mechanism in the first groove；Sealing compensation mechanism includes the second compression spring, spring capping and adjusting nut, spring capping top outer edge is protruded and is provided with pressure ring, spring capping is provided with the second groove of open top, adjusting nut is positioned at the second groove, handwheel center is provided with six rib holes, valve rod top is provided through six rib holes six prism structures coordinated with six rib hole transmissions, threaded with adjusting nut after sequentially passing through handwheel and spring capping in valve rod upper end, second compression spring is set in outside spring capping, second compression spring top and bottom respectively with pressure ring and the first bottom portion of groove top press-fit；Being filled with filler between long-neck valve lid upper inside wall and valve rod outer wall, on long-neck valve lid, end is provided with the gland compressing filler, is coated with the packing ring being positioned on gland outside valve rod, and handwheel lower surface is by packing ring and gland press fit.
Concrete steel structure test block maintenance device the most according to claim 1, it is characterized in that: filter includes that external form is the container of rectangular shape, container inner wall offers cannelure, container top offers the opening of connection corresponding with cannelure, it is inserted with in cannelure by opening and cavity is separated into clear water chamber and the drainage screen in pure water chamber, one end top is provided with the clear water entrance connected by water inlet pipe with clear water chamber, container other end top is provided with the pure water outlet connected by outlet pipe with pure water chamber, container inner wall is provided with and is positioned at drainage screen both sides and all in cross bracing frame, container top is connected by fastening bolt pressing plate, pressing plate lower surface is provided with indent, it is provided with top in opening and protrudes from the sealing strip of indent top edge, cushion block it is provided with in indent, cushion block lower surface and sealing strip upper surface press fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620259524.7U CN205438850U (en) | 2016-03-31 | 2016-03-31 | Concrete steel construction test blocks conservation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620259524.7U CN205438850U (en) | 2016-03-31 | 2016-03-31 | Concrete steel construction test blocks conservation device |
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| CN205438850U true CN205438850U (en) | 2016-08-10 |
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| CN201620259524.7U Expired - Fee Related CN205438850U (en) | 2016-03-31 | 2016-03-31 | Concrete steel construction test blocks conservation device |
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| CN (1) | CN205438850U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079058A (en) * | 2016-08-11 | 2016-11-09 | 中铁十局集团桥梁有限公司 | One is applicable to CRTS III type pre-tensioning system track plates intelligence atomization water charging system |
| CN108453877A (en) * | 2018-04-06 | 2018-08-28 | 黄桂芳 | A kind of steam-cured pond of fabrication of concrete electric pole |
| CN111287187A (en) * | 2020-04-09 | 2020-06-16 | 豫通工程管理有限公司 | Large-volume concrete structure and construction method thereof |
-
2016
- 2016-03-31 CN CN201620259524.7U patent/CN205438850U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079058A (en) * | 2016-08-11 | 2016-11-09 | 中铁十局集团桥梁有限公司 | One is applicable to CRTS III type pre-tensioning system track plates intelligence atomization water charging system |
| CN108453877A (en) * | 2018-04-06 | 2018-08-28 | 黄桂芳 | A kind of steam-cured pond of fabrication of concrete electric pole |
| CN108453877B (en) * | 2018-04-06 | 2019-11-22 | 浙江大学台州研究院 | A kind of steam-cured pond of fabrication of concrete electric pole |
| CN111287187A (en) * | 2020-04-09 | 2020-06-16 | 豫通工程管理有限公司 | Large-volume concrete structure and construction method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20170331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |