A box girder formwork for road and bridge construction

Abstract

This utility model discloses a box girder formwork for road and bridge construction. The box girder formwork includes a support, and a fixedly connected base is provided at the center of the upper end face of the support. The upper end face of the support has symmetrically distributed first sliding grooves, and second sliding grooves are provided in the inner walls of the two opposite side walls of the support. A third sliding groove is provided between the two second sliding grooves. An adjustable adjustment mechanism is provided on the top of the base. The adjustment mechanism includes an adjustable first connecting plate and side templates. A movable inner support mechanism is provided between the two symmetrically distributed side templates. The inner support mechanism includes a movable inner mold. In this utility model, the adjustable adjustment mechanism can be used to adapt to box girders of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of road and bridge construction, and in particular to a box girder formwork for road and bridge construction. Background Technology

[0002] Box girders are a type of beam used in bridge engineering. They are hollow inside with flanges on both sides of the upper part, resembling a box, hence the name. Reinforced concrete box girders are one of the important structures in bridge engineering. They are divided into precast box girders and cast-in-place box girders according to the method of concrete pouring. Cast-in-place box girders are box girders that are poured directly on the construction site, while precast box girders are prefabricated in a separate site and then hoisted after the substructure of the beam is completed.

[0003] The existing formwork for casting transverse diaphragms involves fabricating multiple sets of formwork based on the inclination angle of the box girder ends. During construction, different inclination angles can be selected for casting depending on the specific box girder model. However, fabricating multiple sets of formwork significantly increases processing costs, and also presents numerous inconveniences in storage and transportation, further increasing economic costs. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a box girder formwork for road and bridge construction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A box girder formwork for road and bridge construction includes a support frame. A fixedly connected base is provided at the center of the upper end face of the support frame. The upper end face of the support frame has symmetrically distributed first sliding grooves. Second sliding grooves are provided in the inner walls of the two opposite side walls of the support frame. A third sliding groove is provided between the two second sliding grooves. An adjustable adjustment mechanism is provided on the top of the base. The adjustment mechanism includes an adjustable first connecting plate and side templates. A movable inner support mechanism is provided between the two symmetrically distributed side templates. The inner support mechanism includes a movable inner mold.

[0007] Preferably, the first connecting plate has a first fixing block evenly provided on its side wall, and a slot is provided on the other opposite side wall of the first connecting plate. The first fixing block is adapted to the slot. The top of the base has a first connecting plate that is fixedly connected, and the other first connecting plates are movable.

[0008] Preferably, the bottom of the side template is provided with a first rotating seat that is fixedly connected, and a rotatable second connecting plate is provided on the first rotating seat. The two symmetrically distributed second connecting plates have different structures. One of the second connecting plates has a second fixing block that is fixedly connected at the other end, and the other second connecting plate has a groove at the other end. The groove structure is the same as the slot structure, and the second fixing block has the same structure as the first fixing block.

[0009] Preferably, the top of the side template is provided with a first connecting rod that is fixedly connected, the top of the side template is provided with a movable third connecting plate, the first connecting rod is slidably connected to the third connecting plate, the side wall of the first connecting rod is provided with a detachable fourth connecting plate, and the bottom of the fourth connecting plate is provided with a fixedly connected limiting block.

[0010] Preferably, each of the two first sliding grooves is provided with a slidable first sliding rod, the top of the first sliding rod is fixedly connected to the bottom of the second connecting plate, a second connecting rod is fixedly connected between the two first sliding rods, two second connecting rods are symmetrically provided on the upper end face of the bracket, and a first hydraulic rod is fixedly connected on each of the two opposite side walls of the bracket, the telescopic end of the first hydraulic rod is fixedly connected to the side wall of the second connecting rod.

[0011] Preferably, a rotatable fifth connecting plate is provided at the port of the third connecting plate, a fixedly connected second rotating seat is provided at the bottom center of the fifth connecting plate, a rotatable third connecting rod is provided on the second rotating seat, a fixedly connected third rotating seat is provided on both opposite side walls of the bracket, the third connecting rod is rotatably connected to the third rotating seat, a fixedly connected second sliding rod is symmetrically provided on the side wall of the fifth connecting plate, the second sliding rod is slidably connected to the second sliding groove, and the third rotating seat is slidably connected to the third sliding groove.

[0012] Preferably, a second hydraulic rod is fixedly connected at the center of each of the two opposite side walls of the bracket, the telescopic end of the second hydraulic rod is fixedly connected to the bottom of the third rotating seat, a sixth connecting plate is fixedly connected at both ends of the inner mold, and a third hydraulic rod is fixedly connected symmetrically on the upper end face of the bracket, the telescopic end of the third hydraulic rod is fixedly connected to the bottom of the sixth connecting plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In this invention, an adjustable adjustment mechanism can be set to accommodate box girders of different sizes. A suitable number of first connecting plates are selected based on the bottom dimensions of the box girder. Two first connecting plates are then joined by inserting the first fixing block into the slot. The second hydraulic rod is stretched according to the side angle of the box girder, causing the third rotating seat to move within the third sliding groove, driving the third connecting rod to rotate. The side template and the fourth connecting plate also rotate accordingly. The movement of the third rotating seat changes the distance between the side template and the third connecting plate. The first connecting rod slides within the third connecting plate. After the side template's tilt angle is adjusted, a fourth connecting plate of appropriate width is placed between the side template and the third connecting plate, and a limiting block is secured to the first connecting rod.

[0015] In this invention, a movable internal support mechanism can be set to support the inside of the box girder. The third hydraulic rod is stretched to drive the inner mold to move. The position of the inner mold can be adjusted. It can be flexibly changed according to the size of the box girder and has strong adjustability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a box girder formwork for road and bridge construction proposed in this utility model;

[0017] Figure 2 This is a side view of a box girder formwork for road and bridge construction proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the base structure in this utility model;

[0019] Figure 4 This is a schematic diagram of the first connecting plate structure in this utility model;

[0020] Figure 5 This is a schematic diagram of the side template structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the side template part of this utility model;

[0022] Figure 7 This is a schematic diagram of the side template part of this utility model;

[0023] In the diagram: 1. Bracket; 2. Adjustment mechanism; 3. Internal support mechanism; 11. Base; 12. First slide groove; 13. Second slide groove; 14. Third slide groove; 15. Second hydraulic rod; 21. First connecting plate; 22. Side template; 23. Second connecting plate; 24. Fifth connecting plate; 25. Second slide rod; 26. First slide rod; 27. First hydraulic rod; 31. Inner mold; 32. Sixth connecting plate; 33. Third hydraulic rod; 211. Slot; 212. First fixing block; 221. First connecting rod; 222. Third connecting plate; 223. First rotating seat; 224. Fourth connecting plate; 225. Limiting block; 231. Second fixing block; 241. Second rotating seat; 242. Third connecting rod; 243. Third rotating seat; 261. Second connecting rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figure 1-7A box girder formwork for road and bridge construction includes a support 1. A base 11 is fixedly connected at the center of the upper end face of the support 1. The upper end face of the support 1 has symmetrically distributed first sliding grooves 12. The two opposite side walls of the support 1 have second sliding grooves 13. A third sliding groove 14 is formed between the two second sliding grooves 13. The top of the base 11 is provided with a detachable adjustment mechanism 2. The adjustment mechanism 2 includes a first connecting plate 21. The side wall of the first connecting plate 21 has uniformly fixed first fixing blocks 212. The other opposite side wall of the first connecting plate 21 has a slot 211. The first fixing blocks 212 are adapted to the slot 211.

[0026] The base 11 has a fixed first connecting plate 21 on its top, and the other first connecting plates 21 are movable. The number of first connecting plates 21 can be increased appropriately according to the size of the box girder. The first fixing block 212 is inserted into the slot 211, and the two first connecting plates 21 can be fixed. The base 11 has symmetrically rotatable side templates 22 on its top.

[0027] The bottom of the side template 22 is provided with a first rotating seat 223 that is fixedly connected. The first rotating seat 223 is provided with a rotatable second connecting plate 23. The two symmetrically distributed second connecting plates 23 have different structures. One of the second connecting plates 23 has a second fixing block 231 that is fixedly connected at the other end. The other end of the other second connecting plate 23 has a groove. The groove structure is the same as the slot 211 structure. The second fixing block 231 has the same structure as the first fixing block 212. After the first connecting plates 21 are spliced ​​together, the second connecting plate 23 is then spliced ​​with the first connecting plate 21.

[0028] The top of the side formwork 22 is uniformly provided with fixedly connected first connecting rods 221, and the top of the side formwork 22 is provided with a movable third connecting plate 222. The first connecting rods 221 and the third connecting plate 222 are slidably connected. The side wall of the first connecting rods 221 is provided with a detachable fourth connecting plate 224. The bottom of the fourth connecting plate 224 is uniformly provided with fixedly connected limiting blocks 225. After adjusting the sliding position of the first connecting rods 221 according to the inclination angle of the box girder, the fourth connecting plate 224 of appropriate width is locked between the side formwork 22 and the third connecting plate 222, and the limiting block 225 is locked on the first connecting rods 221.

[0029] Each of the two first slide grooves 12 is provided with a sliding first slide rod 26. The top of the first slide rod 26 is fixedly connected to the bottom of the second connecting plate 23. A second connecting rod 261 is fixedly connected between the two first slide rods 26. Two second connecting rods 261 are symmetrically provided on the upper end face of the bracket 1. A first hydraulic rod 27 is fixedly connected on each of the two opposite side walls of the bracket 1. The telescopic end of the first hydraulic rod 27 is fixedly connected to the side wall of the second connecting rod 261. The first hydraulic rod 27 can adjust the position of the second connecting plate 23 according to the size of the box girder.

[0030] A rotatable fifth connecting plate 24 is provided at the port of the third connecting plate 222. A fixedly connected second rotating seat 241 is provided at the bottom center of the fifth connecting plate 24. A rotatable third connecting rod 242 is provided on the second rotating seat 241. A fixedly connected third rotating seat 243 is provided on both opposite side walls of the bracket 1. The third connecting rod 242 is rotatably connected to the third rotating seat 243. A fixedly connected second sliding rod 25 is symmetrically provided on the side wall of the fifth connecting plate 24. The second sliding rod 25 is slidably connected to the second sliding groove 13. The third rotating seat 243 is slidably connected to the third sliding groove 14.

[0031] The support 1 has a fixed second hydraulic rod 15 at the center of each of the two opposite side walls. The telescopic end of the second hydraulic rod 15 is fixedly connected to the bottom of the third rotating seat 243. The extension of the second hydraulic rod 15 drives the third rotating seat 243 to move in the third slide groove 14, which can adjust the tilt angle of the side template 22.

[0032] A movable inner support mechanism 3 is provided between two symmetrically distributed side templates 22. The inner support mechanism 3 includes an inner mold 31. Both ends of the inner mold 31 are provided with a sixth connecting plate 32 that is fixedly connected. The upper end of the support 1 is provided with a third hydraulic rod 33 that is fixedly connected. The telescopic end of the third hydraulic rod 33 is fixedly connected to the bottom of the sixth connecting plate 32. The third hydraulic rod 33 is stretched to drive the inner mold 31 to move, and the position of the inner mold 31 can be adjusted.

[0033] In this utility model, during actual use, the operator selects an appropriate number of first connecting plates 21 according to the bottom size of the box girder, inserts the first fixing block 212 into the slot 211 to splice the two first connecting plates 21, and the first hydraulic rod 27 stretches to drive the first sliding rod 26 to move towards the base 11. When the second connecting plate 23 is spliced ​​with the first connecting plate 21, the first hydraulic rod 27 stops stretching.

[0034] Adjusting the second hydraulic rod 15 according to the side angle of the box girder causes the third rotating seat 243 to move within the third sliding groove 14, driving the third connecting rod 242 to rotate. The side template 22 and the fourth connecting plate 224 also rotate accordingly. The movement of the third rotating seat 243 causes a change in the distance between the side template 22 and the third connecting plate 222. The first connecting rod 221 slides within the third connecting plate 222. After the tilt angle of the side template 22 is adjusted, the fourth connecting plate 224 of appropriate width is placed between the side template 22 and the third connecting plate 222. The limiting block 225 is placed on the first connecting rod 221. The third hydraulic rod 33 is stretched, driving the inner mold 31 to move. The position of the inner mold 31 is then adjusted.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A box girder formwork for road and bridge construction, the box girder formwork comprising a support (1), characterized in that, The support (1) has a fixed base (11) at the center of the upper end face. The upper end face of the support (1) has a first sliding groove (12) that is symmetrically distributed. The two opposite side walls of the support (1) have a second sliding groove (13) and a third sliding groove (14) between the two second sliding grooves (13). The top of the base (11) has an adjustable adjustment mechanism (2). The adjustment mechanism (2) includes an adjustable first connecting plate (21) and a side template (22). The two symmetrically distributed side templates (22) have a movable inner support mechanism (3). The inner support mechanism (3) includes a movable inner mold (31).

2. The box girder formwork for road and bridge construction according to claim 1, characterized in that, The first connecting plate (21) has a first fixing block (212) evenly provided on the side wall of the first connecting plate (21). The other opposite side wall of the first connecting plate (21) has a slot (211) provided. The first fixing block (212) is adapted to the slot (211). The top of the base (11) has a first connecting plate (21) that is fixedly connected. The other first connecting plates (21) are movable connections.

3. A box girder formwork for road and bridge construction according to claim 2, characterized in that, The side template (22) has a fixedly connected first rotating seat (223) at the bottom. The first rotating seat (223) has a rotatable second connecting plate (23). The two symmetrically distributed second connecting plates (23) have different structures. One of the second connecting plates (23) has a fixedly connected second fixing block (231) at the other end. The other end of the other second connecting plate (23) has a groove. The groove structure is the same as the slot (211) structure. The second fixing block (231) has the same structure as the first fixing block (212).

4. A box girder formwork for road and bridge construction according to claim 3, characterized in that, The top of the side template (22) is uniformly provided with a first connecting rod (221) that is fixedly connected. The side template (22) is provided with a movable third connecting plate (222) above it. The first connecting rod (221) is slidably connected to the third connecting plate (222). The side wall of the first connecting rod (221) is provided with a detachable fourth connecting plate (224). The bottom of the fourth connecting plate (224) is uniformly provided with a fixedly connected limiting block (225).

5. A box girder formwork for road and bridge construction according to claim 4, characterized in that, Each of the two first slide grooves (12) is provided with a sliding first slide rod (26). The top of the first slide rod (26) is fixedly connected to the bottom of the second connecting plate (23). A second connecting rod (261) is fixedly connected between the two first slide rods (26). Two second connecting rods (261) are symmetrically provided on the upper end face of the bracket (1). A first hydraulic rod (27) is fixedly connected on both opposite side walls of the bracket (1). The telescopic end of the first hydraulic rod (27) is fixedly connected to the side wall of the second connecting rod (261).

6. A box girder formwork for road and bridge construction according to claim 5, characterized in that, The third connecting plate (222) has a rotatable fifth connecting plate (24) at its port. The fifth connecting plate (24) has a fixedly connected second rotating seat (241) at its bottom center. The second rotating seat (241) has a rotatable third connecting rod (242). The bracket (1) has a fixedly connected third rotating seat (243) on both opposite side walls. The third connecting rod (242) is rotatably connected to the third rotating seat (243). The fifth connecting plate (24) has a fixedly connected second sliding rod (25) symmetrically connected to the side wall. The second sliding rod (25) is slidably connected to the second sliding groove (13). The third rotating seat (243) is slidably connected to the third sliding groove (14).

7. A box girder formwork for road and bridge construction according to claim 6, characterized in that, The bracket (1) has a fixed second hydraulic rod (15) at the center of each of the two opposite side walls. The telescopic end of the second hydraulic rod (15) is fixedly connected to the bottom of the third rotating seat (243). The inner mold (31) has a fixed sixth connecting plate (32) at both ends. The bracket (1) has a fixed third hydraulic rod (33) symmetrically connected on the upper end face. The telescopic end of the third hydraulic rod (33) is fixedly connected to the bottom of the sixth connecting plate (32).

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