CN209851224U - Magnetic force installation device - Google Patents
Magnetic force installation device Download PDFInfo
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- CN209851224U CN209851224U CN201920165885.9U CN201920165885U CN209851224U CN 209851224 U CN209851224 U CN 209851224U CN 201920165885 U CN201920165885 U CN 201920165885U CN 209851224 U CN209851224 U CN 209851224U
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Abstract
The utility model relates to a concrete curing technical field, concretely relates to magnetic force installation device, including magnetic means and mobile device, the mobile device is connected with magnetic means, the mobile device drives magnetic means and removes. The utility model provides a magnetic force installation device can form strong magnetic force fit with the reinforcing bar in the concrete structure, can make the maintenance blanket that keeps warm and moisturize of concrete closely the pressfitting on the concrete surface, thereby makes the self-adhesive strip forms adhesive connection with the concrete surface betterly, especially in the environment of strong wind, can accomplish the construction comparatively conveniently.
Description
Technical Field
The utility model relates to a concrete curing technical field, concretely relates to magnetic force installation device.
Background
The performance and quality of concrete, which is one of the main materials of engineering structures, are related to the life and safety of buildings, so that in addition to optimizing the performance of concrete itself, reasonable curing is required during the construction period, for example, the cracking risk of concrete is high in some environments such as strong wind and strong sunshine. The heat preservation and moisture preservation maintenance of the plane structure concrete is relatively convenient, the moisture preservation maintenance can be directly sprayed, stored and the like, the heat preservation maintenance can be directly covered by a heat preservation material, but the maintenance of the vertical face structure concrete is difficult, the vertical face structure cannot store water, the heat preservation material is easily influenced by wind, rain and the like when being hung, particularly, the height of the vertical face structure concrete is larger than 4m, the maintenance construction is difficult, and a good maintenance effect is difficult to achieve, taking a bridge main tower as an example, the structure height of the bridge main tower is usually more than 100m, the pouring construction height of each layer is 4-6 m, high-altitude wind is large, sunlight is strong, the heat loss is very rapid after the concrete is demolded, the water evaporation of the concrete is also fast, and the temperature crack and the dry shrinkage crack of the concrete of the main tower structure are common.
The key technology for curing the high-height vertical face structure concrete is to overcome the influence of a strong wind environment and enable the surface of the concrete to keep high humidity for a long time, and the prior art cannot realize the purpose at present, so that a curing facility and a curing method for the vertical face structure concrete, particularly the high-height vertical face structure concrete with the height of more than 4m, are very necessary to develop.
SUMMERY OF THE UTILITY MODEL
The utility model provides a magnetic force installation device has effectively solved the problem of high facade concrete structure maintenance work difficulty.
The utility model discloses a concrete technical scheme as follows:
a magnetic force installation device comprises a magnetic force device and a moving device, wherein the moving device is connected with the magnetic force device, and the moving device drives the magnetic force device to move.
The magnetic mounting device further comprises a shell and a supporting rod, wherein the magnetic device and the supporting rod are arranged in the shell, and the magnetic device is arranged at two ends of the supporting rod.
Wherein, the magnetic device is an electromagnet or a strong magnet.
When the magnetic device is an electromagnet, the magnetic device also comprises a power supply.
Wherein the power supply is a remote control power supply.
The moving device comprises a rope penetrating lifting hole and a lifting rope, the rope penetrating lifting hole is formed in the outer side of the shell, the lifting rope penetrates through the rope penetrating lifting hole and fixes the rope penetrating lifting hole, and the lifting rope penetrates through the rope penetrating lifting hole and extends downwards.
Has the advantages that:
the utility model provides a magnetic force installation device can form strong magnetic force fit with the reinforcing bar in the concrete structure, can make the maintenance blanket that keeps warm and moisturize of concrete closely the pressfitting on the concrete surface, thereby makes the self-adhesive strip forms adhesive connection with the concrete surface betterly, especially in the environment of strong wind, can accomplish the construction comparatively conveniently.
Drawings
Fig. 1 is a schematic view of the magnetic mounting device.
Fig. 2 is a schematic view of the internal structure of the magnetic mounting device.
Fig. 3 is a top view of the magnetic mount.
FIG. 4 is a schematic view showing the use of the magnetic mounting apparatus described in example 5.
FIG. 5 shows the curing of the concrete described in example 7.
Wherein, 1 is the maintenance structure, 2 is the suspended structure, 3 is embedded steel, 7 is magnetic force installation device, 8 is the lifting rope, 21 is magnetic means, 22 is the wire rope handling lewis hole, 23 is the shell, 24 is the bracing piece, 25 is remote control power supply.
Detailed Description
In this embodiment, the maintenance structure to be installed is provided with a heat insulation layer, a moisture retention layer and a self-adhesive structure, the self-adhesive structure may be a traceless sticker, the traceless sticker is a polyurethane material, has a property of being repeatedly pasted, and can still maintain a certain viscosity under the condition of being wetted. The utility model discloses a to this kind of maintenance structure with from bonding structure describe.
Example 1
A magnetic force installation device 7, including magnetic means 21 and mobile device, the mobile device is connected with magnetic means 21, the mobile device drives magnetic means 21 and removes. The magnetic force generated by the magnetic device 21 and the steel bars in the concrete can make the maintenance structure tightly pressed on the surface of the concrete. By means of the moving device, the magnetic mounting device 7 is moved continuously over the surface of the maintenance structure 1, so that all parts of the maintenance structure 1 are compacted.
As shown in fig. 1, 2, and 3, the magnetic mounting device 7 may further include a housing 23 and a support rod 24, the magnetic device 21 and the support rod 24 are disposed in the housing 23, and the magnetic device 21 is disposed at two ends of the support rod 24. The arrangement can better press the magnetic mounting device 7 on the maintenance structure.
Example 2
On the basis of embodiment 1, the magnetic device 21 may be selected from an electromagnet or a strong magnet. Wherein preferably, we select the electro-magnet as the source of magnetic force, and the electro-magnet compares strong magnet, and it produces the ferromagnetism when the circular telegram, then does not have the ferromagnetism when the outage, has guaranteed that its magnetic means can produce under the prerequisite of ferromagnetism at the during operation, has avoided the magnetic means to adsorb the problem that leads to unable smooth construction on other metallic structure.
When the magnetic means 21 is an electromagnet, the magnetic mounting means 7 further comprises a power supply 25. Preferably, the power supply 25 is a remote control power supply, and the remote control operation can supply power to the electromagnet, so that convenience is increased, and the use steps of the magnetic mounting device 7 are simplified.
Example 3
According to the magnetic mounting device 7 of embodiment 1, as shown in fig. 3 and 4, the moving device comprises a rope threading lifting hole 22 and a lifting rope 8, the rope threading lifting hole 22 is arranged on the outer side of a shell 23, and the lifting rope 8 passes through and is tied on the rope threading lifting hole 22. The lifting rope 8 continues to extend downwards after the rope threading lifting hole 22 is fixed. The position of the magnetic installation device 7 can be adjusted by pulling and releasing the lifting rope 8. The mobile device has simple structure, convenient use and convenient field operation.
Example 4
In the prior art, due to the large-height vertical surface structure, the wind is too large, the maintenance structure is blown up by the wind and cannot be attached to the surface of concrete, and the traditional maintenance method cannot be used at this moment. Therefore, in the embodiment, the maintenance structure is attached to the surface of the concrete by using any one of the magnetic mounting devices 7 described in the embodiments 1 to 3, so that the difficult problem of concrete maintenance of the high-altitude vertical structure is successfully solved.
The method for maintaining the concrete of the high-altitude facade structure specifically comprises the following steps,
1) wetting a moisture retention layer of the maintenance structure, and covering the maintenance structure on the surface of the concrete structure;
2) the maintenance structure is pressed tightly on the surface of the concrete structure by using the magnetic mounting device 7 in the above embodiment;
3) moving the magnetic mounting device 7 in a state of keeping the surface of the maintenance structure in a compressed state;
4) after the maintenance structure is installed, the magnetic mounting device 7 is removed.
Through the compaction of the magnetic mounting device 7, the effect that the traceless glue of the curing structure 1 is tightly stuck on the surface of the concrete is realized, so that the curing of the concrete with a high-altitude vertical face structure can be properly completed.
Example 5
According to the method for maintaining the concrete of the high-altitude vertical surface structure in the embodiment 4, the step 1) of covering the maintenance structure 1 on the surface of the concrete structure means that, as shown in fig. 4, the maintenance structure 1 is hung on the embedded steel bars 3 protruding from the concrete of the high-altitude vertical surface through the hanging structure 2, the hanging structure 2 comprises hanging holes and hangers arranged at the top end of the maintenance structure 1, one end of each hanger is hung on the hanging hole of the maintenance structure 1, and the other end of each hanger is hung on the embedded steel bars 3. The hanger can be a hook or an iron wire. The maintenance structure 1 is suspended downward by gravity and completely unfolded and covered on the surface of the concrete structure of the high-elevation vertical surface. The mode of hanging the cover is more suitable for engineering practice and is easy to operate.
And the step 2) is that the magnetic force installation device 7 is put down along the maintenance structure 1 through the lifting rope 8, and the magnetic force device 21 generates strong magnetism and is connected with a steel bar structure in the concrete in a strong magnetic force mode. When the magnetic device 21 is an electromagnet, the magnetic installation device 7 is hung on the embedded steel bar 3 through the lifting rope 8; the power supply 25 is turned on, and the magnetic mounting device 7 is tightly pressed on the surface of the concrete due to magnetic attraction.
When the magnetic device 21 is a strong magnet, the magnetic installation device 7 is hung on the embedded steel bar 3 through the lifting rope 8 and is tightly pressed on the surface of the concrete.
The technician on the ground pulls the downwardly extending lifting rope 8, pulling the magnetic mounting means 7 downwards, the magnetic mounting means 7 moving over the maintenance structure 1, so that the maintenance structure 1 is pressed tightly against the concrete surface from the top down. In the same way, other maintenance structures which are arranged side by side from left to right are also arranged on the surface of the concrete in the mode, so that the complete coverage of the surface of the concrete is realized.
After the concrete heat-preservation and moisture-preservation curing blanket is attached to the concrete, the remote control power supply is turned off through remote control, and the magnetic device loses the strong magnetism and is folded for later use.
Example 6
On the basis of the embodiment 5, before the step 1), the following steps can be further included: the method comprises the following steps: acquiring the surface temperature of concrete, the central temperature of the concrete and the ambient temperature; step two: and when the central temperature of the concrete reaches a temperature peak of not less than 10h, removing the concrete template. The two steps are used for accurately obtaining the attaching time of the concrete template and the maintenance structure 1 and ensuring the maintenance effect of the concrete.
And attaching the concrete heat-preservation and moisture-preservation curing blanket to the surface of the concrete within 2 hours after the concrete template is dismantled and the difference between the central temperature and the surface temperature of the concrete is not more than 25 ℃. Thereby ensuring the concrete curing to be in the best time.
And in the step 3), when the difference between the central temperature of the concrete and the ambient temperature is less than 1.5 ℃, the maintenance structure 1 can be dismantled, and the concrete maintenance is finished.
The following is the magnetic force installation device 7 of the present invention, and the method for curing the high elevation structure concrete using the same.
Example 7
A certain bridge king-tower concrete structure, design height is about 330m, and the construction height is 224 ~ 230m, once only pours highly for 6m, and this section king-tower structure girth is about 58m, and the concrete is gone into the mould temperature and is about 11 ℃, and the ambient mean temperature is 8 ℃, and the wind speed rank is 6 ~ 10 level wind, carries out real-time supervision to the structure central temperature of concrete and the temperature of top layer 5cm department, adopts the utility model discloses a technique keeps warm to the structure concrete maintenance of moisturizing, and concrete step is:
(1) when the central temperature of the concrete reaches a temperature peak for 24 hours, removing the concrete template;
(2) the maintenance liquid is filled in the water spraying equipment, and the water spraying equipment is adopted to spray water to wet the moisturizing layer of the maintenance structure 1; in this embodiment, the suspension structure 2 is a hook or an iron wire, and is matched with the suspension hole at the top end of the maintenance structure 1, one end of the suspension structure 2 is fixed on the embedded steel bar 3 on the upper layer of the concrete, and the other end suspends the maintenance structure on the surface of the concrete structure.
(3) The lifting rope 8 is matched with the rope-penetrating lifting hole 22 of the magnetic mounting device 7, so that the magnetic mounting device 7 can be lifted from the upper part of the concrete structure and lowered, and meanwhile, the lower part of the concrete structure can be pulled by the lifting rope 8 to move the magnetic device downwards;
(4) pressing a magnetic mounting device 7 on the surface of the maintenance structure, wherein a magnetic device 21 is an electromagnet, a remote control power supply is turned on through remote control, the electromagnet generates strong magnetism and forms strong magnetic force fit with a steel bar structure in concrete, a worker below the concrete structure tightly presses the maintenance structure 1 on the surface of the concrete by pulling a lifting rope 8, the traceless adhesive sticker is firmly attached to the surface of the concrete from top to bottom, and the maintenance structure is completely attached to the surface of the concrete from left to right; when the concrete formwork is dismantled for 1h, the complete attachment of the maintenance structure and the structural concrete is completed;
(4) after the maintenance structure 1 is attached to the concrete, the remote control power supply is turned off through remote control, the electromagnet loses the strong magnetism, and the magnetic installation device is folded for later use;
(5) when the difference between the central temperature of the concrete and the ambient temperature is 1.5 ℃, the maintenance structure is dismantled, and the dust on the traceless adhesive is cleaned and collected for later use.
Effect of engineering implementation
After the concrete formwork is removed, the maintenance structure is immediately attached to the surface of the structural concrete by an organizer. As shown in fig. 5, after the concrete form is removed, the temperature of the concrete surface layer suddenly drops, but after the curing structure is covered, the temperature of the surface layer rapidly rises and gradually approaches to balance with the central temperature, the temperature difference between the surface layer and the central temperature is gradually reduced, and a good heat preservation effect is achieved. The concrete impedance hygrometer manufactured by Tramex, Switzerland is used for testing the humidity of the surface of the concrete every day, and the result shows that the relative humidity of the surface of the concrete is not less than 96% in the curing period, and the moisturizing effect is good.
Comparative example 1
The target of the comparative example is also the concrete of the main tower structure of the bridge in the embodiment 2, the design height is about 330m, the construction height is 212-218 m, the one-time pouring height is 6m, the perimeter of the main tower structure in the section is about 60m, the mold-entering temperature of the concrete is about 12 ℃, the average ambient temperature is 9.5 ℃, the wind speed is 6-10 grade wind, the structural center temperature and the surface temperature of the concrete are monitored in real time, the concrete formwork is removed 5 days after the structural concrete is poured, and maintenance measures cannot be taken due to the influence of strong wind.
The test result shows that the temperature drop speed of the concrete is obviously higher than that of the concrete in the embodiment 2, and after the concrete formwork is dismantled, the temperature of the surface layer of the concrete is rapidly reduced, the temperature difference of the inner surface is increasingly large, so that the concrete has temperature cracks with different degrees, and due to sunshine caused by strong wind in the environment, the relative humidity of the surface of the concrete is rapidly reduced to 55% in 6 hours from 90% of the mould dismantling, so that a large amount of shrinkage cracks are caused.
Claims (6)
1. The magnetic mounting device (7) is characterized by comprising a magnetic device (21) and a moving device, wherein the moving device is connected with the magnetic device (21), and the moving device drives the magnetic device (21) to move.
2. The magnetic mounting device (7) according to claim 1, wherein the magnetic mounting device (7) further comprises a housing (23) and a support rod (24), the magnetic device (21) and the support rod (24) are arranged in the housing (23), and the magnetic device (21) is arranged at two ends of the support rod (24).
3. The magnetic mounting device (7) according to claim 1, characterized in that the magnetic device (21) is an electromagnet or a strong magnet.
4. A magnetic mounting device (7) according to claim 3, characterized in that when the magnetic device (21) is an electromagnet, it further comprises a power source (25).
5. The magnetic mounting device (7) according to claim 4, characterized in that the power supply (25) is a remote control power supply.
6. The magnetic mounting device (7) according to claim 1, characterized in that the moving means comprises a threading eyelet (22) and a lifting rope (8), the threading eyelet (22) being arranged outside the housing (23), the lifting rope (8) being passed through the threading eyelet (22) and securing it, the lifting rope (8) being passed through the threading eyelet (22) and extending downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920165885.9U CN209851224U (en) | 2019-01-30 | 2019-01-30 | Magnetic force installation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920165885.9U CN209851224U (en) | 2019-01-30 | 2019-01-30 | Magnetic force installation device |
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| Publication Number | Publication Date |
|---|---|
| CN209851224U true CN209851224U (en) | 2019-12-27 |
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| CN201920165885.9U Active CN209851224U (en) | 2019-01-30 | 2019-01-30 | Magnetic force installation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702873A (en) * | 2019-01-30 | 2019-05-03 | 江苏苏博特新材料股份有限公司 | A kind of magnetic force mounting device and the method for big height facade structures concrete curing |
| CN112586492A (en) * | 2020-11-18 | 2021-04-02 | 顺德职业技术学院 | Box is collected to examination body |
-
2019
- 2019-01-30 CN CN201920165885.9U patent/CN209851224U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702873A (en) * | 2019-01-30 | 2019-05-03 | 江苏苏博特新材料股份有限公司 | A kind of magnetic force mounting device and the method for big height facade structures concrete curing |
| CN112586492A (en) * | 2020-11-18 | 2021-04-02 | 顺德职业技术学院 | Box is collected to examination body |
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