Movable cast-in-place box culvert inner supporting frame

Abstract

The utility model relates to the technical field of supporting frames, and discloses a movable cast-in-place box culvert inner supporting frame which comprises a supporting truss which is a frame body formed by splicing a plurality of steel pipes and has the same section as a box culvert. The telescopic jacking supports are fixedly arranged at the top end of the supporting truss; the telescopic side supports are fixedly arranged on the two sides of the supporting truss; the telescopic bottom supports are fixedly arranged at the lower end of the supporting truss; the at least two steel pipe rails are fixedly arranged on a foundation of the box culvert; and the groove roller is rotationally arranged at the lower end of the supporting truss and is in rolling connection with the steel pipe track. The movable cast-in-place box culvert inner supporting frame can rapidly and stably support a formwork in a box culvert, and can be moved to the next construction section for supporting operation without being disassembled.

Description

TECHNICAL FIELD

[0001] The utility model relates to support frame technical field, specifically, relates to a movable cast-in-place box culvert inner support frame. BACKGROUND

[0002] In the expressway, national road, provincial road and municipal infrastructure project, the demand of box culvert and road underpass structure is increasing, according to the actual situation of the project, comprehensive consideration, cast-in-place box culvert is one of the most common choices. Cast-in-place box culvert often has the characteristics of high clearance and long length, and the construction of box culvert directly affects the road construction, and even is crucial to the key construction period.

[0003] At present, the internal support frame of the cast-in-place box culvert in the domestic is generally adopted the construction method of "support repeated installation and disassembly", the support is installed once every pouring, when the concrete reaches the strength, the formwork and the support are removed, the whole frame body is disassembled and scattered, and then the materials are packed and transported to the next section, and the whole frame body is reinstalled, and the cycle is repeated. This method requires a large amount of labor, has a long construction period, and the installation quality of the frame body is different each time, and the construction cost is high. UTILITY MODEL CONTENTS

[0004] The utility model is made to solve the above technical problems, and the purpose is to provide a movable cast-in-place box culvert inner support frame, which can quickly form stable support for the formwork in the box culvert, and can be moved to the next construction section for support operation without disassembly.

[0005] In order to achieve the above purpose, the utility model provides a movable cast-in-place box culvert inner support frame, which comprises: a support truss, which is an arch body formed by splicing a plurality of steel pipes and is the same as the cross section of the box culvert; a plurality of telescopic top supports fixedly arranged at the top end of the support truss; a plurality of telescopic side supports fixedly arranged at both sides of the support truss; a plurality of telescopic bottom supports fixedly arranged at the lower end of the support truss; at least two steel pipe tracks fixedly arranged on the foundation of the box culvert; and a groove roller rotatably arranged at the lower end of the support truss and rollingly connected with the steel pipe track.

[0006] As an embodiment, the groove section of the groove roller is a circular arc with the same arc as the steel pipe track.

[0007] As an embodiment, two steel pipe tracks are arranged on the foundation of the box culvert, and the two steel pipe tracks are arranged at the two lower end positions of the support truss respectively.

[0008] As an embodiment, a connecting steel pipe is further arranged between the groove roller and the support truss, the groove roller is rotatably arranged on the connecting steel pipe, and the upper end of the connecting steel pipe is connected with the support truss.

[0009] As an embodiment, the upper end of the connecting steel pipe is fixedly connected to one steel pipe of the support truss through a buckle.

[0010] As an embodiment, the upper end of the connecting steel pipe is provided with an external thread, and one vertical steel pipe of the support truss is provided with an internal thread capable of being connected to the external thread.

[0011] As an embodiment, the number of the telescopic bottom supports in the same cross section is more than two.

[0012] As an embodiment, the telescopic top support, the telescopic side support and the telescopic bottom support each comprise a threaded rod, which is threadedly connected to a steel pipe in the support truss.

[0013] As an embodiment, the number of the telescopic top supports in the same cross section is more than three; and the number of the telescopic side supports on one side in the same cross section is more than four.

[0014] According to the above description and practice, the movable cast-in-place box culvert inner support frame can form a support truss by splicing steel pipes according to the actual size of the box culvert in actual use, the lower end of the support truss is supported on the box culvert foundation through telescopic bottom supports, and the top end and the two sides of the support truss are supported on the box culvert formwork through telescopic top supports and telescopic side supports, respectively, so that the box culvert formwork can be stably supported conveniently and quickly, and pouring operation is facilitated. After the construction of the current stage is completed, the telescopic top supports, the telescopic side supports and the telescopic bottom supports are retracted, the grooved rollers at the lower end of the support truss fall on the steel pipe track on the box culvert foundation, and then the entire support truss can be pushed to move forward along the steel pipe track to the next construction section to perform support operation. Only once disassembly and assembly of the support truss are required in the entire box culvert construction process, the support truss can be recycled, the situation of repeated installation and disassembly of the traditional inner support frame is avoided, the construction efficiency is significantly improved, labor input is obviously saved, the construction period is saved, energy is saved, environmental protection is achieved, and a guarantee is provided for the construction of the ground structure as soon as possible.

[0015] In addition, the support truss, the telescopic top support, the telescopic side support, the telescopic bottom support and the steel pipe track are all materials commonly used on construction sites, and the manufacturing of the support frame can be quickly and low-costly completed. Moreover, the support frame does not need to be hoisted to a specified position by using a truck crane or the like, and can be installed and disassembled on site without welding, and is convenient to assemble and disassemble.

[0016] In addition, the support truss is spliced by a plurality of steel pipes, the width and the height of which can be randomly combined and installed according to actual conditions, and is suitable for box culverts with different net widths and net heights. In addition, the telescopic top support, the telescopic bottom support and the telescopic side support themselves have adjustable properties within a certain range, are flexible and convenient, and are not fixed in size, and the application range of the inner support frame is further improved.

[0017] Moreover, the whole inner support frame system is non-welded, the components are mechanically connected, flexible to assemble and disassemble, energy-saving and environment-friendly, and does not need to rely on external equipment such as a jack, simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 The structure diagram of the mobile cast-in-place box culvert inner support frame is related to an embodiment of the utility model.

[0019] Fig. 2 The connection diagram of the groove roller in the mobile cast-in-place box culvert inner support frame is related to an embodiment of the utility model.

[0020] Fig. 3 The structure diagram of the telescopic side support in the mobile cast-in-place box culvert inner support frame is related to an embodiment of the utility model.

[0021] The reference signs in the drawings are:

[0022] 1, support truss; 2, telescopic top support; 3, telescopic side support; 4, telescopic bottom support; 5, steel pipe track; 6, groove roller; 7, connecting steel pipe; 8, box culvert. DETAILED DESCRIPTION

[0023] Example embodiments will now be described with reference to the drawings. However, example embodiments can be implemented in various forms and should not be construed as being limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics can be combined in one or more embodiments in any suitable manner.

[0024] In addition, the drawings are only schematic illustrations of the disclosure and are not necessarily drawn to scale. Identical reference numerals in the drawings represent the same or similar parts, and thus repeated description thereof will be omitted. It should be noted that in the disclosure, the terms "include", "provided with", and "disposed" are used to mean an open-ended inclusion, and refer to the presence of additional elements / components, etc. in addition to the listed elements / components; the terms "first", "second", etc. are used only as labels and are not intended to limit the number or order of the objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the utility model and simplify the description, and thus cannot be understood as limiting the utility model to a particular orientation, configuration, and operation, and thus cannot be understood as limiting the utility model.

[0025] Unless otherwise defined, the terms "mounting", "connected", "connection" are to be construed broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] A movable cast-in-place box culvert internal support frame is disclosed in the embodiment, please refer to Figs. 1 to 3 The movable cast-in-place box culvert internal support frame in the embodiment comprises a support truss 1, a plurality of telescopic top supports 2, a plurality of telescopic side supports 3, a plurality of telescopic bottom supports 4, groove rollers 6 and steel pipe tracks 5.

[0027] The support truss 1 is a frame body of the same section as the box culvert 8, which is spliced by a plurality of steel pipes. Specifically, the steel pipes commonly used on the construction site can be selected, which are assembled into a frame body capable of being placed inside the box culvert 8 through connecting buckles. The width and height of the frame body are slightly smaller than those of the box culvert 8, and the frame body can move in the length direction of the box culvert 8. The telescopic top supports 2 are fixedly arranged at the top end of the support truss 1, the telescopic side supports 3 are fixedly arranged at both sides of the support truss 1, and the telescopic bottom supports 4 are fixedly arranged at the lower end of the support truss 1. The three cooperate with the support truss 1 to form stable support for the box culvert formwork. In use, the telescopic bottom supports 4 are first supported on the box culvert foundation, and then the telescopic top supports 2 and the telescopic side supports 3 are elongated to be supported on the box culvert formwork.

[0028] The steel pipe tracks 5 are arranged on the box culvert 8 foundation, and the number thereof is not less than two, which are used for moving the support truss 1 in the box culvert 8. The groove rollers 6 are rotatably arranged at the lower end of the support truss 1 and are in rolling connection with the steel pipe tracks 5. It should be noted that the telescopic bottom supports 4 are the main load-bearing structure of the support frame, and the groove rollers 6 and the steel pipe tracks 5 only bear the weight of the support truss 1 when the support truss 1 is transferred. For example, in actual application, the telescopic bottom supports 4 can be elongated to lift the support truss 1, and then the groove rollers 6 are separated from the steel pipe tracks 5; when the support truss 1 is transferred, the telescopic bottom supports 4 are shortened, and the groove rollers 6 fall on the steel pipe tracks 5 to realize the rolling connection of the support truss 1 and the steel pipe tracks 5.

[0029] The movable cast-in-situ box culvert inner support frame can form the support truss 1 by splicing steel pipes according to the actual size of the box culvert 8 in actual use, the lower end of the support truss 1 is supported on the box culvert foundation through the telescopic bottom support 4, the top end and the two sides of the support truss 1 are supported on the box culvert formwork through the telescopic top support 2 and the telescopic side support 3 respectively, and stable support of the box culvert formwork can be conveniently and quickly formed, and pouring operation is facilitated. After construction at the stage is completed, the telescopic top support 2, the telescopic side support 3 and the telescopic bottom support 4 are retracted, the groove roller 6 at the lower end of the support truss 1 falls on the steel pipe track 5 on the box culvert foundation, and then the entire support truss 1 can be pushed to move along the steel pipe track 5 to the next construction section, and support operation is performed. Only once disassembly and assembly of the support truss 1 is required in the entire box culvert construction process, the support truss 1 can be recycled, the situation of repeated installation and disassembly of the traditional inner support frame is avoided, construction efficiency is significantly improved, labor input is obviously saved, the construction period is saved, energy is saved, environmental protection is achieved, and protection is provided for construction of an aboveground structure as soon as possible.

[0030] In addition, the support truss 1, the telescopic top support 2, the telescopic side support 3, the telescopic bottom support 4 and the steel pipe track 5 are all materials commonly used on a construction site, and the support frame can be quickly and low-costly manufactured. The support frame does not need to be hoisted to a specified position by using a car crane or the like, can be installed and disassembled on site, and does not need to be welded, and is convenient to assemble and disassemble.

[0031] In addition, the support truss 1 is spliced by a plurality of steel pipes, and the width and the height of the support truss 1 can be randomly combined and installed according to actual conditions, and the support truss 1 is suitable for box culverts with different net widths and net heights.

[0032] As an embodiment, the groove section of the groove roller 6 is a circular arc with the same arc as the steel pipe track 5, and when the two are in contact, there is no transverse relative movement, and the support truss 1 can be stably moved.

[0033] As shown in Fig. 1 In this embodiment, two steel pipe tracks 5 are arranged on the foundation of the box culvert, and the two steel pipe tracks 5 are arranged at the two lower end positions of the support truss 1, so that the support truss 1 can be stably moved along the length direction of the box culvert. In other embodiments, when the width of the box culvert is large, a steel pipe track 5 and a groove roller 6 can be additionally arranged at the middle of the lower end of the support truss 1, so as to improve the stability of the support truss 1 when the support truss 1 is moved.

[0034] Further, please refer to Fig. 2In this embodiment, the connecting steel pipe 7 is further arranged between the groove roller 6 and the support truss 1, the groove roller 6 is rotatably arranged on the connecting steel pipe 7, and the upper end of the connecting steel pipe 7 is connected with the support truss 1. On the one hand, the groove roller 6 is connected with the support truss 1, and on the other hand, the distance between the groove roller 6 and the support truss 1 can be increased. When the support truss 1 needs to be moved, the telescopic bottom support 4 only needs to be retracted by a small distance, so that the groove roller 6 can be in contact with the steel pipe track 5.

[0035] As an embodiment, the upper end of the connecting steel pipe 7 is fixedly connected with one steel pipe of the support truss 1 through buckling. This kind of mode is convenient for quickly connecting the support truss 1 with the groove roller 6.

[0036] As an embodiment, the upper end of the connecting steel pipe 7 is provided with external threads, and one vertical steel pipe of the support truss 1 is provided with internal threads capable of being connected with the external threads. When assembled, the upper end of the connecting steel pipe 7 is only needed to be threadedly connected with the vertical steel pipe, and the height of the groove roller 6 can also be adjusted according to actual needs.

[0037] As an embodiment, in the same cross section, the number of the telescopic bottom supports 4 is more than two, so as to ensure that the support frame can stably support the box culvert formwork.

[0038] As shown in the drawings, the telescopic side support 3 comprises a threaded rod which is threadedly connected with the opposite steel pipe of the support truss 1, and the length of the telescopic side support 3 can be adjusted by rotating the threaded rod. The telescopic top support 2 and the telescopic bottom support 4 have the same structure as the telescopic side support 3, and can be elongated or shortened by rotating the threaded rod. Fig. 3 As an embodiment, in the same cross section, the number of the telescopic top supports 2 is more than three; and in the same cross section, the number of the telescopic side supports 3 on one side is more than four, so as to stably support the box culvert formwork.

[0039] The movable cast-in-place box culvert inner support frame additionally comprises the circular groove roller 6 at the bottom in addition to the conventional support truss 1, the groove roller 6 is mechanically connected with the connecting steel pipe 7 and the support truss 1, and reasonably and effectively forms a stable whole, and the groove roller 6 determines the movable attribute of the whole frame. The groove roller 6 is only stressed during movement, and when the support frame is fixed and the telescopic bottom support 4, the telescopic top support 2 and the telescopic side support 3 are adjusted, the groove roller 6 is only in a safe reserve state when the whole support frame is stressed, and the stress of the frame body meets the requirement of bearing all loads.

[0040]

[0041] ​The track of the mobile cast-in-situ box culvert inner support frame is a traditional common steel pipe, without any other auxiliary support or other things, simple to fix, and can be removed after use. That is, the moving track of the groove roller 6 is a circular steel pipe, which ensures that the groove roller 6 can smoothly reach the designated position of the next construction section along the circular steel pipe track 5 laid in advance, avoiding derailment or frame body deviation, and even uncontrollable frame body position. And the surface of the circular steel pipe track 5 is smooth, and the friction resistance between the groove roller 6 is small, which further ensures the smoothness and convenience of the frame body moving process, and the horizontal movement can be mainly completed by manual.

[0042] The stable system composed of the groove roller 6, the connecting steel pipe 7 and the support truss 1 in the mobile cast-in-situ box culvert inner support frame realizes a movable inner support frame construction technology. The support frame of different section structures is set up once, that is, it only needs to be set up once, and can be used repeatedly. After the support frame is moved, only simple inspection, adjustment, fixation and acceptance are needed, which saves the process of repeated installation and removal, improves the construction efficiency, and the construction technology is simple, without the need for large mechanical equipment, saving labor and time, greatly reducing the construction cost.

[0043] The mobile cast-in-situ box culvert inner support frame can be moved or supported by force without the help of external jacks and other equipment throughout the process. Only conventional steel pipes and other materials are needed throughout the process to adjust the vertical height through the telescopic bottom support 4 at the bottom, the telescopic top support 2 at the top, and the connecting steel pipe 7, so as to adjust the working state of the inner support frame.

[0044] The entire frame of the mobile cast-in-situ box culvert inner support frame does not need to be hoisted to the designated position by a car hoist or other hoisting equipment, and can be installed and removed on site without welding. It is convenient to set up and remove, and only manual labor is needed to easily push forward or backward along the track during the moving process, which is flexible and convenient to move.

[0045] The height and width of the mobile cast-in-situ box culvert inner support frame can be adjusted at will, and it is suitable for structures with different net heights and different net widths. The support frame material is only traditional common steel pipe, disc buckle and other materials, which can be combined arbitrarily according to the actual situation, and can form a whole stable structure, with wider application range and more flexibility.

[0046] The frame of the mobile cast-in-situ box culvert inner support frame is mainly mechanically connected, which is convenient to install and remove, and the materials can be recycled. There is no permanent connection such as welding throughout the process, which is energy-saving, environmentally friendly and economical and practical.

[0047] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A mobile cast-in-situ box culvert inner support frame, characterized in that, The utility model relates to a movable cast-in-situ box culvert inner support frame which comprises: a support truss made of several steel pipes and having the same cross section as the box culvert; several telescopic top supports fixed at the top end of the support truss; several telescopic side supports fixed at the two sides of the support truss; several telescopic bottom supports fixed at the lower end of the support truss; at least two steel pipe tracks fixed on the foundation of the box culvert; and groove rollers rotatably arranged at the lower end of the support truss and rollingly connected with the steel pipe tracks.

2. The movable cast-in-situ box culvert inner support frame according to claim 1, wherein the groove cross section of the groove rollers is a circular arc having the same curvature as the steel pipe tracks.

3. The movable cast-in-situ box culvert inner support frame according to claim 2, wherein two steel pipe tracks are arranged on the foundation of the box culvert, and the two steel pipe tracks are arranged at the two lower end positions of the support truss, respectively.

4. The movable cast-in-situ box culvert inner support frame according to claim 1, wherein a connecting steel pipe is further arranged between the groove rollers and the support truss, the groove rollers are rotatably arranged on the connecting steel pipe, and the upper end of the connecting steel pipe is connected with the support truss.

5. The movable cast-in-situ box culvert inner support frame according to claim 4, wherein the upper end of the connecting steel pipe is fixedly connected with one steel pipe of the support truss through a buckle.

6. The movable cast-in-situ box culvert inner support frame according to claim 4, wherein the upper end of the connecting steel pipe is provided with external threads, and one vertical steel pipe of the support truss is provided with internal threads connectable with the external threads.

7. The movable cast-in-situ box culvert inner support frame according to claim 1, wherein the number of telescopic bottom supports in the same cross section is more than two.

8. The movable cast-in-situ box culvert inner support frame according to claim 1, wherein the telescopic top supports, the telescopic side supports and the telescopic bottom supports each comprise a threaded rod, and the threaded rod is threadedly connected with a steel pipe of the support truss.

9. The movable cast-in-situ box culvert inner support frame according to claim 8, wherein the number of telescopic top supports in the same cross section is more than three; and the number of telescopic side supports on one side in the same cross section is more than four. ​ ​ ​ ​ ​ ​ ​ ​ ​

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