Adjustable internal mold supporting device for concrete box girder construction

Abstract

The utility model provides an adjustable internal mold supporting device for concrete box girder construction, which comprises a base, a plurality of second long angle irons and a plurality of first adjusting holes, the base comprises two first long angle irons and a plurality of second adjusting holes, and the first adjusting holes are arranged on the first long angle irons; the joist comprises two second long angle irons, one ends of the second long angle irons are connected to one ends of the first long angle irons, and the second adjusting holes are formed in the second long angle irons; one end of the supporting structure is connected with the second long angle iron; the other end of the supporting structure is connected with the first long angle iron; the base, the joist and the supporting structure form a triangular structure; the position of the supporting structure is adjusted through the first adjusting hole and the second adjusting hole. The adjusting holes used for adjusting the height and the position are formed in the base and the joist, the position of the internal mold supporting device is adjusted by changing the length of the supporting structure and the positions of the fixed adjusting holes in the two ends in the using process, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of inner mold support of prefabricated box beams, in particular to an adjustable inner mold support device for concrete box beam construction. Background Art

[0002] Concrete box girder is a widely used structural form in bridge engineering, usually for bridges with larger spans. Due to its unique box-shaped cross-section structural characteristics, concrete box girders need to be cast in sections regardless of whether they are cast-in-place or prefabricated. Traditional segmented formwork support and fixing methods mostly use screw supports, which have complex assembly and disassembly processes, low turnover efficiency of support accessories, high labor input, and high production costs. Utility Model Content

[0003] In view of this, the utility model provides an adjustable inner form support device for concrete box girder construction, which solves the technical problems in the prior art of using screw rods as support formwork, which has a complicated disassembly and assembly process and low turnover efficiency of support accessories.

[0004] The utility model provides an adjustable inner mold support device for concrete box girder construction, comprising: a base, the base comprising two first long angle irons, a plurality of first adjustment holes, and the plurality of first adjustment holes are arranged on the first long angle irons; a joist, the joist comprising two second long angle irons, one end of the second long angle iron is connected to one end of the first long angle iron, a plurality of second adjustment holes, and the plurality of second adjustment holes are arranged on the second long angle iron; a supporting structure, one end of the supporting structure is connected to the second long angle iron; the other end of the supporting structure is connected to the first long angle iron, the base, the joist and the supporting structure form a triangular structure; wherein the position of the supporting structure is adjusted through the first adjustment holes and the second adjustment holes.

[0005] In a possible implementation, the base further includes a steel plate, one end of which is fixed to the first long angle iron, and the other end of which is fixed to the inner web of the concrete box girder.

[0006] In a possible implementation, the support structure includes: a first threaded rod; a second threaded rod; a first internally threaded sleeve, one end of the first internally threaded sleeve is threadedly connected to the first threaded rod, and the other end of the first internally threaded sleeve is threadedly connected to the second threaded rod; a steel handle, the steel handle is fixedly connected to the internally threaded sleeve; a first pin, the first threaded rod and the first long angle iron are fixedly connected via the first pin; a second pin, the second threaded rod and the second long angle iron are fixedly connected via the second pin.

[0007] In a possible implementation, it further includes a first bolt, and one end of the second long angle iron is detachably connected to one end of the first long angle iron through the first bolt.

[0008] In a possible implementation, it also includes: a square steel bar; and a second bolt, wherein the second bolt passes through the second adjustment hole and the square steel bar to connect the square steel bar to the second long angle iron.

[0009] In a possible implementation, it further includes: a steel bottom plate, which is arranged on the square steel bar; and a steel bottom bracket, which is welded to the end surfaces at both ends of the steel bottom plate.

[0010] In a possible implementation, it further includes: a steel shaft, both ends of which are fixedly connected to the steel base; and a roller, through which the steel shaft passes.

[0011] In a possible implementation, it also includes: a steel top support, which is used to support the inner mold; a second internally threaded sleeve, which is fixedly connected to the bottom of the steel top support; and a third threaded rod, which passes through the square steel bar and the steel bottom support and is threadedly connected to the second internally threaded sleeve.

[0012] In a possible implementation, a limiting plate is further included, and the limiting plate is arranged on an end surface of one end of the second long angle iron.

[0013] The utility model provides an adjustable inner mold support device for concrete box girder construction, comprising: a base, the base comprising two first long angle irons, a plurality of first adjustment holes, and the plurality of first adjustment holes are provided on the first long angle irons; a joist, the joist comprising two second long angle irons, one end of the second long angle irons being connected to one end of the first long angle irons, a plurality of second adjustment holes, and the plurality of second adjustment holes are provided on the second long angle irons; a support structure, one end of the support structure being connected to the second long angle irons; the other end of the support structure being connected to the first long angle irons, the base, the joist and the support structure forming a triangular structure; wherein the support structure is positionally adjusted through the first adjustment holes and the second adjustment holes. Due to the use of split assembly support, the assembly speed of each accessory is fast, and the connection of each accessory can be quickly disassembled after the concrete curing is completed, thereby improving the material circulation and utilization efficiency. The base and the joist are both provided with adjustment holes for adjusting the height and position. When in use, the position of the inner mold support device is adjusted by changing the length of the support structure and the positions of the fixed adjustment holes at both ends. The operation is simple, and each accessory is a general construction material, which is easy to process and manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1The figure is a schematic structural diagram of an adjustable inner mold support device provided by an embodiment of the utility model;

[0015] Figure 2 The figure is a side view of an adjustable inner mold support device provided by an embodiment of the utility model;

[0016] Figure 3 Shown is a top view of an adjustable inner mold support device provided by an embodiment of the utility model.

[0017] Description of reference numerals:

[0018] 1. Base; 11. First long angle iron; 12. First adjustment hole; 13. Steel pad;

[0019] 2. joist; 21. second long angle iron; 22. second adjustment hole;

[0020] 3. Support structure; 31. First threaded rod; 32. Second threaded rod; 33. Internal threaded sleeve; 34. Steel handle; 35. First latch; 36. Second latch;

[0021] 4. First bolt;

[0022] 51. square steel bar; 52. second bolt; 53. steel bottom plate; 54. steel bottom bracket;

[0023] 61. Steel shaft; 62. Roller;

[0024] 71. Steel top support; 72. Second internal threaded sleeve; 73. Third threaded rod;

[0025] 8. Limit plate. DETAILED DESCRIPTION

[0026] In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically limited. In the utility model embodiment, all directional indications (such as up, down, left, right, front, back, top, bottom ...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or equipment comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.

[0027] In addition, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Figure 1 The figure is a schematic structural diagram of an adjustable inner mold support device provided by an embodiment of the utility model; Figure 2 The figure is a side view of an adjustable inner mold support device provided by an embodiment of the utility model; Figure 3 The figure shows a top view of an adjustable inner mold support device provided by an embodiment of the utility model. Figure 1 As shown, combined Figure 2 as well as Figure 3 The support device includes: a base 1, the base 1 includes two first long angle irons 11, a plurality of first adjustment holes 12, and the plurality of first adjustment holes 12 are provided on the first long angle irons 11; a joist 2, the joist 2 includes two second long angle irons 21, one end of the second long angle iron 21 is connected to one end of the first long angle iron 11, a plurality of second adjustment holes 22, and the plurality of second adjustment holes 22 are provided on the second long angle iron 21; a support structure 3, one end of the support structure 3 is connected to the second long angle iron 21; the other end of the support structure 3 is connected to the first long angle iron 11, and the base 1, the joist 2 and the support structure 3 form a triangular structure; wherein the support structure 3 is positionally adjusted through the first adjustment holes 12 and the second adjustment holes 22. Due to the use of split assembly support, the assembly speed of each accessory is fast, and the connection of each accessory can be quickly disassembled after the concrete curing is completed, thereby improving the efficiency of material circulation and use. Holes for adjusting the height and position are provided on the base and the support beam. When in use, the position of the support device is adjusted by changing the length of the support structure and the positions of the fixed holes at both ends. The operation is simple. All accessories of the support device are universal construction materials and are easy to process and manufacture. When in use, it can be quickly assembled into an integrated device and can be quickly disassembled after use. The loading and unloading methods are simple and convenient, the use is flexible, the operation is simple, and the labor invested in the formwork construction is effectively reduced.

[0030] Specifically, the base 1 and the support beam 2 of the adjustable inner mold support device are provided with a first adjustment hole 12 and a second adjustment hole 22 for adjusting the height and position. When in use, the position of the inner mold support device is adjusted by changing the length of the supporting screw structure 3 and the positions of the first adjustment holes 12 and the second adjustment holes 22 at both ends, and the operation is simple.

[0031] It should be understood that there are multiple first adjustment holes 12 and second adjustment holes 22, and the specific number is not limited in the present implementation. The number of the first adjustment holes 12 and the second adjustment holes 22 can be adjusted according to specific design requirements, as long as the relative position of the support screw structure 3 on the first long angle iron 11 and the second long angle iron 21 can be moved and adjusted.

[0032] In a possible implementation, the base 1 further includes a steel plate 13, one end of the steel plate 13 is fixed to the first long angle iron 11, and the other end of the steel plate 13 is fixed to the inner web of the concrete box girder.

[0033] Specifically, two steel pads 13 are first fixed to the inner web of the concrete box girder, and then four long angle irons are used to combine them in pairs. The longer group, namely the first long angle iron 11, is placed in the vertical direction and welded and fixed to the steel pad 13 to serve as the base of the adjustable inner mold support device. The shorter group, namely the second long angle iron 21, is placed in the horizontal direction and connected to the base 1 with bolts to serve as the support beam of the device.

[0034] More specifically, two 90cm long 75mm*50mm*6mm first long angle irons 11 are assembled at an interval of 7cm to form the base of the device, and a 270mm*70mm*6mm steel pad 13 is welded under each end of the first long angle iron 11, and the welding position is 2-3cm away from the first long angle iron 11. A position fixing hole with a radius of 1cm is reserved in the center area of ​​each end of the steel pad 13. When in use, the steel pad 13 and the first long angle iron 11 are fixed to the web of the concrete box beam by bolts, and two 70cm long 96mm*56mm*6mm second long angle irons 21 are assembled at an interval of 5.8cm to form the supporting beam 2 of the device, the first long angle iron 11 is placed on the inner web of the concrete box beam, and the second long angle iron 21 is placed horizontally, and one end of the first long angle iron 11 is detachably connected to one end of the second long angle iron 21.

[0035] In a possible implementation, the support structure 3 includes: a first threaded rod 31; a second threaded rod 32; a first internally threaded sleeve 33, one end of the first internally threaded sleeve 33 is threadedly connected to the first threaded rod 31, and the other end of the first internally threaded sleeve 33 is threadedly connected to the second threaded rod 32; a steel handle 34, the steel handle 34 is fixedly connected to the first internally threaded sleeve 33; a first pin 35, the first threaded rod 31 is fixedly connected to the first long angle iron 11 via the first pin 35; a second pin 36, the second threaded rod 32 is fixedly connected to the second long angle iron 21 via the second pin 36.

[0036] Specifically, a first threaded rod 31 and a second threaded rod 32 with a length of 15 cm and a diameter of 35 mm, and an internally threaded sleeve 33 with a length of 36 cm and a diameter of 70 mm are used between the base 1 and the supporting beam 2 of the inner mold support device to form a supporting structure 3 of the device. One end of the first threaded rod 31 is screwed into one end of the internally threaded sleeve 33 to form a first support member. The other end of the first threaded rod 31 is made into a hexagonal bolt, and a circular hole with a radius of 1 cm is reserved in the middle. The first pin 35 passes through the hexagonal bolt and the first adjustment hole 12 of the base 1 respectively, to connect the first long angle iron 11 of the base 1 and the first threaded rod 31.

[0037] Similarly, one end of the second threaded rod 32 is screwed into the other end of the internal threaded sleeve 33 to form a second support member. The other end of the second threaded rod 32 is made into a hexagonal bolt. A circular hole with a radius of 1 cm is reserved in the middle of the hexagonal bolt. The second pin 36 passes through the hexagonal bolt and the second adjustment hole 22 of the base 1 respectively to connect the second long angle iron 21 of the support beam 2 and the second threaded rod 32.

[0038] More specifically, a steel handle 34 is provided on the left and right sides of the inner threaded sleeve 33 at the center to facilitate gripping during use.

[0039] In a possible implementation, it also includes a first bolt 4, one end of the second long angle iron 21 is detachably connected to one end of the first long angle iron 11 through the first bolt 4, the first bolt 4 connects the first long angle iron 11 and the second long angle iron 21 together, the first long angle iron 11, the second long angle iron 21 and the supporting structure 3 are connected to form a triangular stable structure, firstly, the first long angle iron 11 is fixed to the inner web of the concrete box girder, and then the first long angle iron 11 and the second long angle iron 21 are connected together through the first bolt 4, and then the two ends of the supporting structure 3 are respectively connected to the first long angle iron 11 and the second long angle iron 21, and the relative position of the inner mold support device is adjusted by changing the length of the threaded rod during use.

[0040] In a possible implementation, it also includes: a square steel bar 51; a second bolt 52, the second bolt 52 passes through the first adjustment hole 12 and the square steel bar 51, and connects the square steel bar 51 to the first long angle iron 11. The square steel bar 51 has a longer side hollow design in the horizontal direction, and is fixed by the second bolt 52 and the pin passing through the first adjustment hole 12. A threaded hole with a diameter of 35 mm is reserved in the vertical center position of the first long angle iron 11 and the second long angle iron 21, so that the first threaded rod 31 and the second threaded rod 32 can be screwed into the vertical center position of the first long angle iron 11 and the second long angle iron 21.

[0041] In a possible implementation, it also includes a steel base plate 53, which is arranged on the square steel bar 51. A 260mm*210mm*15mm steel base plate is directly welded to the square steel bar 51, and two 210mm*70mm*15mm steel base supports 54 are vertically welded to the end faces at both ends of the steel base plate 53. The two right angles at the upper end of the steel base support 54 are changed to arcs, and two circular holes with a diameter of 2 cm are reserved on the steel base support 54 according to the designed position; a threaded hole with a diameter of 35 mm is reserved in the center position of the steel base plate 53 for screwing in a threaded rod.

[0042] In a possible implementation, it also includes: a steel shaft 61, both ends of the steel shaft 61 are fixedly connected to the steel base support 54; a roller 62, the steel shaft 61 passes through the roller 62, since round holes with a diameter of 2 cm are reserved at both ends of the steel base support 54, two steel shafts 61 with bolts at both ends are connected in series with two polyurethane rollers 62 with a length of 21 cm and a diameter of 60 mm, which are installed on the steel base support 54 to form a temporary slide rail, which is placed above the second long angle iron 21 and the square steel bar 51, so that the roller 62 can roll along the steel shaft 61.

[0043] In a possible implementation, it also includes a steel top support 71, which is used to support the inner mold; a second internally threaded sleeve 72, which is fixedly connected to the bottom of the steel top support 71; a third threaded rod 73, which passes through the square steel bar 51 and the steel bottom support 54, and is threadedly connected to the second internally threaded sleeve 72. The steel top support 71 is made by vertically welding two 60mm*40mm*10mm steel plates to the left and right sides of a 180mm*60mm*10mm steel plate, and welding an internally threaded sleeve with a length of 20mm and a diameter of 50mm below it, passing the third threaded rod 73 through the square steel bar 51 and the bottom steel plate of the steel bottom support 54, and screwing it into the steel top support 71. The steel top support 71 is used for template support. The steel top support 71 can adjust the top support height from the bottom with the help of daily tools such as wrenches or screwdrivers, which is highly practical. The length of the third threaded rod 73 at this position can be adjusted according to usage.

[0044] In a possible implementation, it also includes a limit plate 8, which is arranged on the end face of one end of the second long angle iron 21. A 70mm*85mm*6mm limit plate 8 is welded to the unconnected end of the second long angle iron 21 to fix the two second long angle irons 21 that constitute the support beam together. The top of the limit plate 8 is 5cm away from the top surface of the second long angle iron 21, and a 220mm*50mm*50mm square steel bar 51 is placed above the limit plate 8.

[0045] The installation shape and installation position of the inner mold support device can be adjusted by the first adjustment hole 12 set on the first long angle iron 11, the position of the second adjustment hole 22 set on the second long angle iron 21, the length of the first threaded rod 31, the second threaded rod 32 and the first internal threaded sleeve 33. The height of the template can be adjusted by adjusting the steel top support 71 and the connected third threaded rod 73. After the concrete curing is completed, the height of the steel top support 71 is lowered to facilitate the demoulding operation; when the template falls on the roller 62, the template is pulled on one side of the box beam to completely separate it from the box beam box chamber. The adjustable inner mold support device adopts a split assembly support, and the assembly speed of each accessory is fast. After the concrete curing is completed, the connection of each accessory can be quickly disassembled, which improves the flowability of the template support accessory material. In addition, each accessory is a general construction material and is easy to process and manufacture; it can be quickly assembled into an integrated device when used, and can be quickly disassembled after use. The loading and unloading method is simple and convenient, flexible to use, simple to operate, safe and reliable, and can effectively reduce the labor invested in template construction, etc., providing a new idea for the inner mold support system of concrete box beam template construction.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable inner formwork support device for concrete box girder construction, characterized in that: include: A base (1), the base (1) comprising two first long angle irons (11), a plurality of first adjustment holes (12), and the plurality of first adjustment holes (12) are provided on the first long angle irons (11); A joist (2), the joist (2) comprising two second long angle irons (21), one end of each of the second long angle irons (21) being connected to one end of each of the first long angle irons (11), and a plurality of second adjustment holes (22), the plurality of second adjustment holes (22) being provided on the second long angle irons (21); A supporting structure (3), one end of the supporting structure (3) is connected to the second long angle iron (21); the other end of the supporting structure (3) is connected to the first long angle iron (11), and the base (1), the supporting beam (2) and the supporting structure (3) form a triangular structure; Wherein, the support structure (3) is positionally adjusted via the first adjustment hole (12) and the second adjustment hole (22).

2. The adjustable inner formwork support device for concrete box girder construction according to claim 1 is characterized in that: The base (1) further comprises a steel plate (13), one end of which is fixed to the first long angle iron (11), and the other end of which is fixed to the inner web of the concrete box beam.

3. The adjustable inner formwork support device for concrete box girder construction according to claim 1 is characterized in that: The support structure (3) comprises: A first threaded rod (31); a second threaded rod (32); A first internally threaded sleeve (33), one end of the first internally threaded sleeve (33) being threadedly connected to the first threaded rod (31), and the other end of the first internally threaded sleeve (33) being threadedly connected to the second threaded rod (32); A steel handle (34), wherein the steel handle (34) is fixedly connected to the internally threaded sleeve (33); A first latch (35), wherein the first threaded rod (31) and the first long angle iron (11) are fixedly connected via the first latch (35); A second latch (36), wherein the second threaded rod (32) and the second long angle iron (21) are fixedly connected via the second latch (36).

4. The adjustable inner formwork support device for concrete box girder construction according to claim 1, characterized in that: It also includes a first bolt (4), and one end of the second long angle iron (21) is detachably connected to one end of the first long angle iron (11) through the first bolt (4).

5. The adjustable inner formwork support device for concrete box girder construction according to claim 1, characterized in that: Also includes: Square steel bar (51); A second bolt (52), wherein the second bolt (52) passes through the second adjustment hole (22) and the square steel bar (51), and connects the square steel bar (51) to the second long angle iron (21).

6. The adjustable inner formwork support device for concrete box girder construction according to claim 5, characterized in that: Also includes: A steel bottom plate (53), wherein the steel bottom plate (53) is arranged on the square steel bar (51); A steel bottom bracket (54) is welded to the end surfaces at both ends of the steel bottom plate (53).

7. The adjustable inner formwork support device for concrete box girder construction according to claim 6, characterized in that: Also includes: A steel shaft (61), both ends of which are fixedly connected to the steel base support (54); A roller (62) through which the steel shaft (61) passes.

8. The adjustable inner formwork support device for concrete box girder construction according to claim 7, characterized in that: Also includes: A steel top support (71), wherein the steel top support (71) is used to support the inner mold; A second internally threaded sleeve (72), the second internally threaded sleeve (72) being fixedly connected to the bottom of the steel top support (71); A third threaded rod (73), the third threaded rod (73) passes through the square steel bar (51) and the steel base (54), and is threadedly connected to the second internally threaded sleeve (72).

9. The adjustable inner formwork support device for concrete box girder construction according to claim 1, characterized in that: It also includes a limiting plate (8), which is arranged on an end surface of one end of the second long angle iron (21).

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