Quick-release box girder manhole concrete pouring supporting device

Abstract

The utility model provides a quick-release box girder manhole concrete pouring supporting device, which relates to the technical field of concrete pouring and comprises a template and a plurality of adjustable supports. The adjustable supports are arranged at the lower end of the template, each adjustable support comprises an upper supporting seat and a base, and the lower sides of the two ends of each upper supporting seat are hinged to the upper portion of a left connector and the upper portion of a right connector through a plurality of upper supporting rods correspondingly. The upper sides of the two ends of the base are hinged to the lower portion of a left connector and the lower portion of a right connector through a plurality of lower supporting rods respectively, an outer hexagonal screw is arranged on the left connector, the right end of the outer hexagonal screw penetrates through the left connector to be connected with a lead screw, and the right end of the lead screw is in threaded connection with the right connector. The device is convenient and fast to mount and dismount, suitable for box girders with different heights, high in turnover speed, long in service life, firm in supporting under the action of external force, and capable of effectively improving the manhole plugging construction quality and ensuring that the strength of a top plate of the box girder meets the requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete pouring, in particular to a quick-detachable box girder manhole concrete pouring support device. Background Art

[0002] The construction of prefabricated box girders or cast-in-place box girders usually involves the closure of manholes at the top plate. When closing the manhole, the formwork is required to be close to the lower edge of the top plate and have sufficient strength to withstand the gravity of the upper concrete and no deformation during the development of concrete strength. Manhole closure formwork usually uses wooden formwork, and there are usually two ways to support it: one is to use iron wire to pass through the wooden formwork to hang the formwork on the reserved steel bars in the manhole, and the other is to support the formwork with steel pipes or wooden squares in the box girder. After the manhole sealing concrete is poured, it is affected by gravity. If the support strength is insufficient, leakage will occur at the bottom, resulting in insufficient strength of the local top plate concrete and permanent defects. Therefore, the manhole formwork support system has sufficient strength and rigidity, which is the key to affecting the strength of the box girder top plate.

[0003] At present, the sizes of manholes in box girders are not uniform. The formwork and support system need to be split into multiple pieces and assembled inside the box girder. The support system and the formwork are tightly connected through wedge blocks. After the manhole concrete reaches the designed strength, it is decomposed into multiple pieces and transported out from other reserved holes. The life of the formwork and support system is short and the turnover speed is slow. Summary of the invention

[0004] In view of the above-mentioned prior art, the utility model proposes a quick-detachable box girder manhole concrete pouring support device.

[0005] The utility model provides a quick-detachable box girder manhole concrete pouring support device, comprising a template and a plurality of adjustable supports; the plurality of adjustable supports are arranged at the lower end of the template, the adjustable supports comprise an upper support seat and a base, the lower sides of both ends of the upper support seat are respectively hingedly connected to the upper parts of a left connector and a right connector through a plurality of upper support rods, the upper sides of both ends of the base are respectively hingedly connected to the lower parts of a left connector and a right connector through a plurality of lower support rods, the left connector is provided with an external hexagonal screw, the right end of the external hexagonal screw passes through the left connector and is connected to a screw rod, and the right end of the screw rod is threadedly connected to the right connector.

[0006] Preferably, the template is made of a plurality of light metal plates and hinges to be foldable.

[0007] Preferably, an isolation layer is provided at the upper end of the template.

[0008] Preferably, the isolation layer is made of a disposable plastic film.

[0009] Preferably, a groove is provided on the left connector to limit the left and right sliding of the external hexagonal screw in the left connector.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a quick-detachable box girder manhole concrete pouring support device, which is easy and quick to install and disassemble, can be applied to box girders of different heights, has a fast turnover speed, a long service life, and is firmly supported under the action of external forces. It can effectively improve the construction quality of manhole sealing and ensure that the strength of the box girder top plate meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of the quick-detachable box girder manhole concrete pouring support device in the embodiment of the utility model.

[0012] Figure 2 It is a side view of the quick-detachable box girder manhole concrete pouring support device in an embodiment of the utility model.

[0013] In the figure: 1. template; 2. hinge; 3. upper support seat; 4. base; 5. upper support rod; 6. left connector; 7. right connector; 8. external hexagonal screw; 9. groove; 10. screw rod; 11. lower support rod. DETAILED DESCRIPTION

[0014] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0015] Example: Figure 1 , 2 A quick-detachable box girder manhole concrete pouring support device is shown, comprising a template 1 and a plurality of adjustable supports, the number of which is selected according to the length of the template 1. The template 1 is made of a plurality of light metal plates and hinges 2 to be foldable, the plurality of adjustable supports are arranged at the lower end of the template 1, the adjustable supports include an upper support seat 3 and a base 4, the lower sides of both ends of the upper support seat 3 are respectively hinged to the upper sides of the left connector 6 and the right connector 7 through two upper support rods 5, the upper sides of both ends of the base 4 are respectively hinged to the lower sides of the left connector 6 and the right connector 7 through two lower support rods 11, the left connector 6 is provided with an external hexagonal screw 8, the external hexagonal screw 8 can rotate freely in the left connector 6, the left connector 6 is provided with a groove 9 for limiting the external hexagonal screw 8 from sliding left and right in the left connector 6, the right end of the external hexagonal screw 8 penetrates the left connector 6 and is connected to the screw rod 10, and the right end of the screw rod 10 is threadedly connected to the right connector 7.

[0016] Furthermore, a disposable plastic film is provided at the upper end of the template 1 as an isolation layer.

[0017] When the support device is in use, the hexagonal screw 8 is rotated by an electric wrench to drive the screw 10 to rotate, so that the right connector 7 can slide left and right, and the height of the support device can be quickly adjusted to achieve the purpose of rapid installation and disassembly to adapt to different manhole sizes.

[0018] The above are only implementation methods of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure made using the contents of the specification and drawings of the present utility model, directly or indirectly used in other related technical fields, are also within the patent protection scope of the present utility model.

Claims

1. A quick-detachable box girder manhole concrete pouring support device, characterized in that: It includes a template and several adjustable supports; the several adjustable supports are arranged at the lower end of the template, and the adjustable supports include an upper support seat and a base, the lower sides of both ends of the upper support seat are respectively hinged to the upper parts of the left connector and the right connector through several upper support rods, and the upper sides of both ends of the base are respectively hinged to the lower parts of the left connector and the right connector through several lower support rods, and the left connector is provided with an external hexagonal screw, the right end of the external hexagonal screw penetrates the left connector and is connected to the lead screw, and the right end of the lead screw is threadedly connected to the right connector; the template is made of multiple light metal plates and hinges to be foldable; an isolation layer is provided at the upper end of the template; the isolation layer is made of disposable plastic film; a groove is provided on the left connector to limit the external hexagonal screw from sliding left and right in the left connector.

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