Frost crack prevention device for concrete filled steel tube in winter construction

Abstract

The utility model provides a frost crack prevention device for concrete filled steel tube construction in winter, and relates to the technical field of concrete filled steel tube freezing prevention. The winter construction frost crack prevention device for the concrete filled steel tube comprises a concrete layer, a frost crack prevention mechanism is arranged outside the concrete layer, the frost crack prevention mechanism comprises a fixed mounting frame, and the inner wall of the fixed mounting frame is rotationally connected with a two-way threaded rod. According to the frost crack prevention device for winter construction of the steel pipe concrete, parts in the frost crack prevention mechanism are arranged in a matched mode, so that the poured steel pipe concrete can be protected and clamped, the situation that the steel pipe concrete is frozen to crack due to the fact that the external temperature is too low is effectively avoided, and the service life of the steel pipe concrete is prolonged. And furthermore, the device has higher stability.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of anti-freezing devices, specifically a kind of winter construction anti-freezing device for steel pipe concrete, belong to steel pipe concrete anti-freezing technical field. BACKGROUND

[0002] Steel pipe concrete is that concrete is filled into steel pipe and tamps to increase the strength and stiffness of steel pipe, generally, we call the steel pipe concrete with concrete strength grade below C50 as ordinary steel pipe concrete;Steel pipe concrete with concrete strength grade above C50 is called steel pipe high-strength concrete;Steel pipe concrete with concrete strength grade above C100 is called steel pipe super-high-strength concrete.

[0003] Through retrieval, the Chinese patent with publication number CN201817910U discloses a kind of steel pipe concrete reinforcing structure, including, it is in steel pipe concrete main body outer wall coating with 2-4mm flexible polymer mortar layer, there is concrete protective layer in flexible polymer mortar layer outer layer construction.The device can prevent the delamination cracking of concrete and steel pipe by using flexible polymer mortar.

[0004] Although the above scheme can avoid the delamination cracking of steel pipe concrete, but in cold weather construction, water in concrete will condense due to too low external temperature, although there is the wrapping effect of steel pipe, but under the condition of extreme cold or long-term freeze-thaw cycle, freezing and cracking phenomenon still appears, so the stability is low;Therefore, we provide a kind of winter construction anti-freezing device for steel pipe concrete to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of winter construction anti-freezing device for steel pipe concrete to solve the above problems to solve the problems, such as steel pipe concrete easy to freeze and crack and low stability in the prior art.

[0006] The utility model is realized by the following technical schemes: a kind of winter construction anti-freezing device for steel pipe concrete, including concrete layer, the outside of the concrete layer is provided with anti-freezing mechanism, the anti-freezing mechanism includes fixed mounting bracket, the inner wall of the fixed mounting bracket is rotatably connected with bidirectional screw rod, the outer surface of the bidirectional screw rod is threadedly connected with threaded sliding block, the bottom surface of the threaded sliding block and fixed mounting bracket are slidably connected, the inner wall of the threaded sliding block is hinged with swing rod, the outside of the concrete layer is provided with anti-coming-off and anti-corrosion mechanism, the anti-coming-off and anti-corrosion mechanism includes first flexible polymer mortar layer.

[0007] Preferably, the end of the swing rod away from threaded sliding block is hinged with articulated rod, the outer surface of the articulated rod is slidably connected with fixed block, by the setting of fixed block, so that articulated rod can be effectively supported and limited.

[0008] Preferably, the outer surface of the fixed block is fixedly connected with a fixed clamping plate, and the inner wall of the fixed clamping plate is fixedly connected with a bottom pad.

[0009] Preferably, the inner wall of the fixed mounting frame is fixedly connected with a limiting rod, and the outer surface of the limiting rod is rotatably connected with the swing rod.

[0010] Preferably, the outer surface of the first flexible polymer mortar layer is fixedly connected with a thermal insulation layer, and the outer surface of the thermal insulation layer is fixedly connected with a reinforcing layer.

[0011] Preferably, the inner wall of the first flexible polymer mortar layer is fixedly connected with a first anticorrosion layer, and the inner wall of the first anticorrosion layer is fixedly connected with a steel pipe body.

[0012] Preferably, the inner wall of the steel pipe body is fixedly connected with a second anticorrosion layer, and the inner wall of the second anticorrosion layer is fixedly connected with a second flexible polymer mortar layer.

[0013] The steel pipe concrete winter construction anti-freezing and cracking device has the following beneficial effects:

[0014] 1. The steel pipe concrete winter construction anti-freezing and cracking device is provided with a freezing and cracking prevention mechanism, so that the steel pipe concrete after pouring can be protected and clamped, the situation that the steel pipe concrete is frozen and cracked due to excessively low external temperature is avoided, and the device is more stable.

[0015] 2. The steel pipe concrete winter construction anti-freezing and cracking device is provided with a falling-off and corrosion prevention mechanism, so that the device can effectively avoid the situation that the concrete layer and the steel pipe body are delaminated and cracked, and the situation that the steel pipe body is corroded and its strength is reduced is prevented, and the device is more safe. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1The whole structure schematic view of the utility model;

[0017] Figure 2 The three-dimensional structure schematic view of the anti-freezing and cracking mechanism of the utility model;

[0018] Figure 3 The three-dimensional structure schematic view of the bidirectional threaded rod of the utility model;

[0019] Figure 4 The utility model discloses Figure 1 The three-dimensional structure schematic view of the A place in the middle.

[0020]

Main component symbol explanation

[0021] 1, concrete layer;

[0022] 2, anti-freezing and cracking mechanism;201, fixed mounting frame;202, bidirectional threaded rod;203, threaded sliding block;204, swing rod;205, hinged rod;206, fixed block;207, fixed clamping plate;208, bottom pad;209, limiting rod;210, thermal insulation layer;211, reinforcing layer;

[0023] 3, anti-falling and anti-corrosion mechanism;301, first flexible polymer mortar layer;302, first anticorrosion layer;303, steel pipe body;304, second anticorrosion layer;305, second flexible polymer mortar layer. Specific implementation

[0024] The utility model embodiment provides a kind of anti-freezing and cracking device for steel pipe concrete winter construction.

[0025] Please refer to Figure 1 Including concrete layer 1, the inside of steel pipe body 303 is provided with reinforced frame, reinforced frame is not shown in drawing, by the arrangement of reinforced frame, when pouring concrete layer 1 to the inside of steel pipe body 303, the strength after pouring is greatly improved.

[0026] Please refer to Figure 1 、 Figure 2 And Figure 3 , the outside of concrete layer 1 is provided with anti-freezing and cracking mechanism 2, and the anti-freezing and cracking mechanism 2 includes fixed mounting frame 201, by the arrangement of fixed mounting frame 201, so that the poured steel pipe concrete can effectively play the role of limiting support.

[0027] The inner wall of the fixed mounting frame 201 is rotationally connected with a bidirectional threaded rod 202, the outer surface of the bidirectional threaded rod 202 is threadedly connected with a threaded sliding block 203, the bottom surface of the threaded sliding block 203 is slidingly connected with the fixed mounting frame 201, the inner wall of the threaded sliding block 203 is hingedly connected with an oscillating rod 204, the bottom surface of the threaded sliding block 203 is fixedly installed with a sliding block, and the inner bottom wall of the fixed mounting frame 201 is provided with a sliding groove matched with the sliding block on the bottom surface of the threaded sliding block 203, so that the threaded sliding block 203 is more stable when being driven to move.

[0028] The end, away from the threaded sliding block 203, of the oscillating rod 204 is hingedly connected with a hinged rod 205, the outer surface of the hinged rod 205 is slidingly connected with a fixed block 206, the fixed block 206 is arranged to effectively support and limit the hinged rod 205, and the hinged rod 205 is simultaneously driven to slide up and down in the inner wall of the fixed block 206 when the oscillating rod 204 is driven to oscillate with the limiting rod 209.

[0029] The outer surface of the fixed block 206 is fixedly connected with a fixed clamping plate 207, and the inner wall of the fixed clamping plate 207 is fixedly connected with a bottom pad 208, the fixed clamping plate 207 is arranged to effectively support and fix the bottom pad 208, and the bottom pad 208 is arranged to make the fixed clamping plate 207 more stable when clamping and fixing the casted steel pipe concrete.

[0030] The inner wall of the fixed mounting frame 201 is fixedly connected with a limiting rod 209, the outer surface of the limiting rod 209 is rotationally connected with the oscillating rod 204, the limiting rod 209 is arranged to support and limit the oscillating rod 204, the oscillating rod 204 is driven to oscillate around the limiting rod 209 when being driven to move, a bearing is fixedly installed between the oscillating rod 204 and the oscillating rod 204, the inner ring of the bearing is fixedly connected with the limiting rod 209, the outer ring of the bearing is fixedly connected with the oscillating rod 204, the bearing is arranged to effectively limit the oscillating rod 204, so that the oscillating rod 204 can only oscillate and cannot slide in the length direction of the limiting rod 209.

[0031] Please refer to Figure 1 and Figure 4 , the outer part of the concrete layer 1 is provided with an anti-falling and anti-corrosion mechanism 3, the anti-falling and anti-corrosion mechanism 3 comprises a first flexible polymer mortar layer 301, the outer surface of the first flexible polymer mortar layer 301 is fixedly connected with a thermal insulation layer 210, the outer surface of the thermal insulation layer 210 is fixedly connected with a reinforcing layer 211, the reinforcing layer 211 is arranged to effectively reinforce the steel pipe body 303 after the concrete layer 1 is casted, and the thermal insulation layer 210 is arranged to effectively thermally insulate the internal concrete layer 1 and the steel pipe body 303, so that the steel pipe body 303 is prevented from cracking due to excessively low internal temperature.

[0032] The inner wall of the first flexible polymer mortar layer 301 is fixedly connected with a first anticorrosion layer 302, and the inner wall of the first anticorrosion layer 302 is fixedly connected with a steel pipe body 303.

[0033] The inner wall of the steel pipe body 303 is fixedly connected with a second anticorrosion layer 304, the inner wall of the second anticorrosion layer 304 is fixedly connected with a second flexible polymer mortar layer 305, and the inner wall of the second flexible polymer mortar layer 305 is fixedly connected with the concrete layer 1.

[0034] In use, the second anticorrosion layer 304 and the second flexible polymer mortar layer 305 are coated on the inner wall of the steel pipe body 303 in sequence, then the concrete layer 1 is poured into the steel pipe body 303, the second flexible polymer mortar layer 305 can effectively improve the adhesion between the concrete layer 1 and the steel pipe body 303, and prevent delamination, the second anticorrosion layer 304 can prevent the steel pipe body 303 from being corroded and causing a decrease in strength, then the first anticorrosion layer 302 and the first flexible polymer mortar layer 301 are coated on the outer surface of the steel pipe body 303 in sequence, thereby effectively improving the adhesion between the steel pipe body 303 and the thermal insulation layer 210, the thermal insulation layer 210 can play a role in heat preservation, the temperature inside the steel pipe body 303 is prevented from being too low, the reinforcing layer 211 can play a role in reinforcement, the strength of the steel pipe body 303 after pouring the concrete layer 1 is improved, the bidirectional threaded rod 202 is driven to rotate, the bidirectional threaded rod 202 drives the two threaded sliding blocks 203 to slide away from each other on the inner bottom wall of the fixed mounting frame 201, the threaded sliding block 203 drives the swing rod 204 to swing towards each other about the limiting rod 209, the swing rod 204 drives the fixed clamping plates 207 on the surfaces of the two fixed blocks 206 to move towards each other, the reinforcing layer 211 is effectively clamped and fixed, the device can clamp and protect the poured steel pipe concrete, the steel pipe concrete is prevented from being frozen and cracked due to low external temperature, and the device is further more stable.

[0035] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for preventing frost cracks in winter construction of a steel pipe concrete, comprising a concrete layer (1), characterized in that: The outer part of the concrete layer (1) is provided with an anti-freezing mechanism (2), the anti-freezing mechanism (2) comprises a fixed mounting frame (201), the inner wall of the fixed mounting frame (201) is rotatably connected with a bidirectional threaded rod (202), the outer surface of the bidirectional threaded rod (202) is threadedly connected with a threaded sliding block (203), the bottom surface of the threaded sliding block (203) is slidably connected with the fixed mounting frame (201), and the inner wall of the threaded sliding block (203) is hingedly connected with an oscillating rod (204).

2. A device for preventing frost cracks in winter construction of a concrete filled steel tube according to claim 1, characterized in that: The end, away from the threaded sliding block (203), of the oscillating rod (204) is hingedly connected with a hinged rod (205), and the outer surface of the hinged rod (205) is slidably connected with a fixed block (206).

3. A device for preventing frost cracks in winter construction of a concrete filled steel tube according to claim 2, characterized in that: The outer surface of the fixed block (206) is fixedly connected with a fixed clamping plate (207), and the inner wall of the fixed clamping plate (207) is fixedly connected with a bottom pad (208).

4. The anti-freezing and cracking device for winter construction of a steel pipe concrete according to claim 1, characterized in that: The inner wall of the fixed mounting frame (201) is fixedly connected with a limiting rod (209), and the outer surface of the limiting rod (209) is rotatably connected with the oscillating rod (204).

5. The anti-freeze crack device for winter construction of a steel pipe concrete according to claim 1, characterized in that: The outer surface of the first flexible polymer mortar layer (301) is fixedly connected with a thermal insulation layer (210), and the outer surface of the thermal insulation layer (210) is fixedly connected with a reinforcing layer (211).

6. A device for preventing frost cracks in winter construction of a concrete filled steel tube according to claim 1, characterized in that: The inner wall of the first flexible polymer mortar layer (301) is fixedly connected with a first corrosion-resistant layer (302), and the inner wall of the first corrosion-resistant layer (302) is fixedly connected with a steel pipe body (303).

7. A device for preventing frost cracks in winter construction of a concrete filled steel tube according to claim 6, characterized in that: The inner wall of the steel pipe body (303) is fixedly connected with a second corrosion-resistant layer (304), the inner wall of the second corrosion-resistant layer (304) is fixedly connected with a second flexible polymer mortar layer (305), and the inner wall of the second flexible polymer mortar layer (305) is fixedly connected with the concrete layer (1).

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