Hydraulic formwork device for prefabricating bent cap

Abstract

The utility model belongs to the technical field of bridge construction, and particularly relates to a hydraulic formwork device for prefabricating a bent cap, which comprises a steel platform base, an integral side formwork and an end formwork, the steel platform base is fixedly arranged on the ground, the side formwork and the end formwork are formed by splicing and fixing a plurality of formwork units, and the side formwork and the end formwork are symmetrically arranged on two sides of the steel platform base. The steel platform base, the side formworks and the end formworks are mutually connected to jointly form a formwork structure of the bent cap, the construction platform is arranged on one side of the side formworks and fixedly connected with the walking trolley, a hanging ladder is fixedly installed on the construction platform, the walking trolley is slidably connected with a track on the ground, one end of the hydraulic mechanism is fixedly connected with the walking trolley, and the other end of the hydraulic mechanism is fixedly connected with the walking trolley. The prefabricated cover beam has the advantages that the stability and the bearing capacity of the prefabricated cover beam are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field, concretely relates to a hydraulic formwork device for prefabricated bent cap. BACKGROUND

[0002] Bent cap refers to the cross beam set on the top of the row pile pier for supporting, distributing and transferring the load of the upper structure, and its main function is to support the upper structure of the bridge and transfer all the load to the lower structure. Prefabricated bent cap is widely used in various municipal, highway and other bridge projects due to its high efficiency, less pollution and high construction safety.

[0003] The traditional prefabricated bent cap adopts assembled formwork, which has the disadvantages of high labor intensity, low construction efficiency, poor appearance quality and the like. The split type formwork unit needs a large number of manual labor to participate in the assembly, disassembly and movement of the formwork, which is labor-intensive and has a large workload. In addition, the assembly precision of the formwork is limited, and the complexity of the construction site environment makes the sealing work at the joint complicated and the sealing effect poor. The concrete slurry is easy to leak from the joint, which not only causes material waste, but also affects the appearance quality and the integrity of the internal structure of the prefabricated bent cap. SUMMARY

[0004] The utility model is just in view of the above-mentioned problem, and a hydraulic formwork device for prefabricated bent cap is designed to improve the stability and load-bearing capacity of the prefabricated bent cap.

[0005] To achieve the above-mentioned purpose, the utility model provides a hydraulic formwork device for prefabricated bent cap, which comprises a steel base, an integral side form and an end form. The steel base is fixedly arranged on the ground. The side form and the end form are both assembled and fixed by a plurality of formwork units, and the side form and the end form are symmetrically arranged on both sides of the steel base. The steel base, the side form and the end form are connected to each other to form a formwork structure of the bent cap. The utility model also comprises a construction platform, a traveling trolley and a hydraulic mechanism. The construction platform is arranged on one side of the side form and fixedly connected with the traveling trolley. The construction platform is fixedly installed with a suspended ladder. The traveling trolley is slidingly connected with the track of the ground. One end of the hydraulic mechanism is fixedly connected with the traveling trolley, and the other end is drivingly connected with the side form.

[0006] Further, the traveling trolley has a plurality of groups, which are symmetrically arranged on both sides of the steel base. The traveling trolley comprises a first traveling end beam and a second traveling end beam which are symmetrically arranged. The first traveling end beam is fixedly connected with the second traveling end beam through a connecting frame. The traveling end beam is fixedly connected with a motor housing. The motor output shaft is drivingly connected with a traveling wheel. The traveling wheel is slidingly connected with the track.

[0007] Further, the hydraulic mechanism comprises a transverse translation oil cylinder, one end of the transverse translation oil cylinder is fixedly connected with the walking trolley, and the other end of the transverse translation oil cylinder is drivingly connected with the side mold.

[0008] Further, the hydraulic mechanism further comprises a vertical jacking oil cylinder and a demolding oil cylinder, the walking trolley is fixedly connected with a lower longitudinal beam at an upper end, the side mold is provided with an L-shaped upper longitudinal beam, the vertical jacking oil cylinder is vertically arranged and connected with the lower longitudinal beam and the upper longitudinal beam at two ends respectively, and the demolding oil cylinder is horizontally arranged and connected with the upper longitudinal beam and the side mold at two ends respectively.

[0009] Further, the construction platform is fixedly connected with guide rods through connecting rod groups at two ends, and the guide rods are slidingly connected with cleaning tools through pulley groups.

[0010] Preferably, the guide rod is in a regular rhombus shape in a transverse section.

[0011] Further, the pulley group comprises a V-shaped support, a first movable pulley and a second movable pulley, the first movable pulley and the second movable pulley are symmetrically arranged and slidingly connected with the guide rod, and the central shafts of the movable pulleys are rotationally connected with the support.

[0012] Further, a plurality of pulley groups are slidingly connected with the guide rod, and traction ropes are bound between adjacent pulley groups.

[0013] Further, the support is fixedly connected with an open lifting hook, and the cleaning tools are hung on the lifting hook.

[0014] Further, the connecting rod groups comprise horizontal rods and inclined struts, one end of each of the horizontal rods and the inclined struts is fixedly connected with the side mold, and the other end of each of the horizontal rods and the inclined struts intersects and is fixedly connected with the guide rod.

[0015] In summary, the utility model has the following advantages and beneficial technical effects:

[0016] 1. The utility model integrates the traditional assembled formwork into a whole, effectively reduces the number of joints between the formworks, and thus reduces the quality risks caused by improper joint treatment, and ensures the appearance and quality of the prefabricated bent cap.

[0017] 2. In the utility model, the walking trolley cooperates with the hydraulic mechanism to enable the formwork to be arbitrarily moved in the horizontal and vertical directions, without the need for frequent manual movement and adjustment, thereby greatly shortening the construction period and reducing manual errors. In addition, the mechanized operation of the walking trolley cooperating with the hydraulic mechanism reduces the need for manual participation in formwork handling and positioning, reduces labor intensity, and improves the safety of operation. The mechanical accurate control ensures the accuracy and stability of the forming size of the prefabricated bent cap, and further improves the construction quality.

[0018] 3. In this utility model, the guide rod, in conjunction with the pulley system, enables flexible movement of the cleaning tool. The rhomboid design of the guide rod serves to support and stabilize the moving pulley. The multi-stage pulley system extends the travel distance of the cleaning tool, facilitating tool transfer for workers and enabling cleaning of the formwork, thereby improving the appearance quality of the precast cap beam. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a cross-sectional view of the present invention;

[0021] Figure 2 This is a partial structural schematic diagram of the present invention;

[0022] Figure 3 This describes the usage state of the pulley block in this utility model. Figure 1 ;

[0023] Figure 4 It is along Figure 3 A magnified view of a portion of point A in the middle;

[0024] Figure 5 This describes the usage state of the pulley block in this utility model. Figure 2 .

[0025] The reference numerals in the attached figures are:

[0026] 1. Steel platform base; 2. Side formwork; 3. Construction platform;

[0027] 4. Traveling trolley; 41. First traveling trolley end beam; 42. Second traveling trolley end beam; 43. Connecting frame; 44. Motor; 45. Traveling wheels; 46. Lower longitudinal beam; 47. Upper longitudinal beam;

[0028] 5. Hydraulic mechanism; 51. Lateral translation cylinder; 52. Vertical lifting cylinder; 53. Demolding cylinder;

[0029] 6. Guide rod; 7. Pulley block; 71. Bracket; 72. First movable pulley; 73. Second movable pulley; 74. Traction rope; 75. Hook; 8. Connecting rod group; 81. Horizontal bar; 82. Diagonal brace. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-5 The present invention will be described in further detail as follows:

[0031] like Figures 1-2As shown, the embodiment discloses a hydraulic formwork device for prefabricated cap beam, which comprises a steel base 1, side forms 2 and end forms. The steel base 1 is cast on the ground at the construction site. The side forms 2 and the end forms are assembled by multiple dry formwork units and then welded and polished to reduce the number of joints between the beam bodies. The side forms 2 are symmetrically arranged on the long side of the steel base 1, and the end forms (not shown in the figure) are symmetrically arranged on the wide side of the steel base 1. The steel base 1, the side forms 2 and the end forms are connected to each other to form a formwork structure of the cap beam. The hydraulic formwork device further comprises a construction platform 3, a traveling trolley 4 and a hydraulic mechanism 5. In the embodiment, the construction platform 3 has two groups, which are arranged on the side of the side form 2 away from the steel base 1. The construction platform 3 is fixedly connected to the frame of the traveling trolley 4 through temporary supports. The construction platform 3 is welded with a suspended ladder (not shown in the figure) on both sides. The traveling trolley 4 is slidingly connected to the track on the ground. The track is made of channel steel. One end of the hydraulic mechanism 5 is fixedly connected to the traveling trolley 4, and the other end is drivingly connected to the side form 2.

[0032] As shown, Figure 2 In the embodiment, the traveling trolley 4 has two groups, which are symmetrically arranged on both sides of the steel base 1. The traveling trolley 4 comprises a first traveling end beam 41 and a second traveling end beam 42 arranged symmetrically. The first traveling end beam 41 is closer to the steel base 1 than the second traveling end beam 42. The first traveling end beam 41 is fixedly connected to the second traveling end beam 42 through a connecting frame 43. The bottom ends of the traveling end beams are fixedly connected to the housings of motors 44 through fasteners. The output shafts of the motors 44 are drivingly connected to traveling wheels 45. The traveling wheels 45 are slidingly connected to the track.

[0033] As shown, Figure 2 The hydraulic mechanism 5 comprises a horizontal translation oil cylinder 51. The horizontal translation oil cylinder 51 is horizontally arranged. The cylinder body end is fixedly connected to the second traveling end beam 42 through fasteners. The other piston part is drivingly connected to the side form 2 through a floating joint. The front end of the piston part is slidingly connected to the connecting frame 43 through a guide rail pair. The hydraulic mechanism 5 further comprises a demolding oil cylinder 53 and a vertical jacking oil cylinder 52 arranged above the first traveling end beam 41. A lower longitudinal beam 46 is fixedly connected to the upper end of the connecting frame 43. The side form 2 is provided with an L-shaped upper longitudinal beam 47. The vertical jacking oil cylinder 52 is vertically arranged. The cylinder body end is fixedly connected to the lower longitudinal beam 46. The other piston part is drivingly connected to the horizontal plate in the upper longitudinal beam 47. The demolding oil cylinder 53 is horizontally arranged. The cylinder body end is fixedly connected to the vertical plate in the upper longitudinal beam 47. The other piston part penetrates through the vertical plate and then drivingly connects to the side form 2.

[0034] As shown, Figures 3-5As shown, the two ends of the construction platform 3 in the length direction are fixed with guide rods 6 through connecting rod groups 8, and cleaning tools are slidably arranged on the guide rods 6 through pulley groups 7; the transverse section of the guide rod 6 is a regular rhombus; the pulley group 7 comprises a V-shaped support 71, a first movable pulley 72 and a second movable pulley 73, the first movable pulley 72 and the second movable pulley 73 are symmetrically arranged on the two sides of the guide rod 6, and the outer rings of the movable pulleys are slidably connected with the guide rod 6, and the central axes of the movable pulleys are rotatably connected with the support 71.

[0035] As shown in the figure, Figure 5 The guide rod 6 is slidably connected with a plurality of pulley groups 7, and the adjacent pulley groups 7 are bound with traction ropes 74; the bottom of the support 71 is welded with an open hook 75, and the cleaning tools are movably hung on the hook 75; the connecting rod group 8 comprises a horizontal rod 81 and an inclined strut 82, one end of each of the horizontal rod 81 and the inclined strut 82 is welded with the construction platform 3, the other end is intersected and then welded with the guide rod 6, and a reinforcing rib (not shown in the figure) is welded between the combined surfaces of the horizontal rod 81 and the inclined strut 82.

[0036] The working principle of the hydraulic formwork device for prefabricated bent cap according to the utility model is as follows:

[0037] The concrete pouring steel base 1 is laid with a track, the walking trolley 4 is assembled, the walking trolley 4 is erected on the track, the hydraulic mechanism 5 is installed, the oil inlet and outlet and the connecting part of the oil cylinder are inspected for sealing, and the normal operation of the hydraulic mechanism 5 is ensured; the prefabricated integral side form 2 and the end form are assembled and welded according to the size of the bent cap to be poured, the welds are polished, and the rust and welding marks in the formwork are cleaned; then the side form 2 and the end form are installed on the hydraulic mechanism 5 by manual cooperation with the gantry crane, the side form 2 is transversely moved by operating the transverse translation oil cylinder 51 according to the size of the prefabricated bent cap, the distance of the side form 2 to the center line is ensured to meet the design requirements, the elevation of the side form 2 is adjusted by operating the vertical jacking oil cylinder 52, and the inclination of the side form 2 is ensured to meet the design requirements, and the joints of the steel base 1, the side form 2 and the end form are sealed with rubber plugs.

[0038] The gantry crane is used to lift the bent cap skeleton, and the prefabricated bent cap concrete is poured, and after the concrete is formed to meet the demolding condition, the side form 2 and the bent cap are removed by the demolding oil cylinder 53; the elevation of the side form 2 is adjusted by operating the vertical jacking oil cylinder 52, so that the formwork is separated from the prefabricated bent cap, and then the transverse translation oil cylinder 51 is operated to move the formwork away from the steel base 1; finally, the motor 44 of the walking trolley 4 is started, the motor 44 drives the walking wheels 45 to move the formwork, and the formwork is longitudinally moved to the next steel base 1 to perform the construction of the next piece of prefabricated bent cap.

[0039] When pouring the prefabricated cap beam, the inner wall of the formwork needs to be cleaned and coated with a release agent, the worker moves on the construction platform 3, and simultaneously flexibly changes the travel distance of the cleaning tool by using the pulley block 7, the pulley block 7 controls the travel distance by moving the movable pulley and stretching or retracting the traction rope 74.

[0040] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A hydraulic formwork apparatus for precast deck girders, characterized by: The utility model provides a kind of formwork structure of cap beam, including steel pedestal, integral side mould and end mould, the steel pedestal is fixedly arranged on ground, the side mould and end mould are assembled and fixed by several formwork units, and the side mould and end mould are symmetrically arranged on the both sides of the steel pedestal, and the steel pedestal, side mould and end mould are connected to form the formwork structure of cap beam;It also includes construction platform, travelling trolley and hydraulic mechanism, the construction platform is arranged on the side of the side mould, and is fixedly connected with the travelling trolley, the construction platform is fixedly installed with suspension ladder, the travelling trolley is slidably connected with the track of ground, one end of the hydraulic mechanism is fixedly connected with the travelling trolley, and the other end is drivingly connected with the side mould.

2. The hydraulic formwork apparatus for precast deck girder according to claim 1, wherein: The travelling trolley has multiple groups, and is symmetrically arranged on the both sides of the steel pedestal, and the travelling trolley includes symmetrically arranged first travelling end beam and second travelling end beam, the first travelling end beam is fixedly connected with the second travelling end beam through connecting frame, the travelling end beam is fixedly connected with motor housing, the motor output shaft is drivingly connected with travelling wheel, and the travelling wheel is slidably connected with the track.

3. The hydraulic formwork apparatus for precast deck girder according to claim 1, wherein: The hydraulic mechanism includes transverse translation oil cylinder, one end of the transverse translation oil cylinder is fixedly connected with the travelling trolley, and the other end is drivingly connected with the side mould.

4. The hydraulic formwork apparatus for precast deck girder according to claim 3, wherein: The hydraulic mechanism further includes vertical jacking oil cylinder and demoulding oil cylinder, the travelling trolley is fixedly connected with lower longitudinal beam at the upper end, the side mould is provided with L-shaped upper longitudinal beam, the vertical jacking oil cylinder is vertically arranged, and both ends are connected with the lower longitudinal beam and the upper longitudinal beam respectively, and the demoulding oil cylinder is horizontally arranged, and both ends are connected with the upper longitudinal beam and the side mould respectively.

5. The hydraulic formwork apparatus for precast deck girder according to claim 1, wherein: The construction platform is fixedly connected with guide rod through connecting rod group at both ends, the guide rod is slidably connected with cleaning tool through pulley block.

6. The hydraulic formwork apparatus for precast deck girder according to claim 5, wherein: The guide rod is in the shape of a regular rhombus in transverse section.

7. The hydraulic formwork apparatus for precast deck girder according to claim 5, wherein: The pulley block includes V-shaped support, first movable pulley and second movable pulley, the first movable pulley and the second movable pulley are symmetrically arranged and slidably connected with the guide rod, and the central shaft of the movable pulley is rotatably connected with the support.

8. The hydraulic formwork apparatus for precast deck girder according to claim 5, wherein: A plurality of pulley blocks are slidably connected with the guide rod, and traction ropes are tied between adjacent pulley blocks.

9. The hydraulic formwork apparatus for precast deck girder according to claim 7, wherein: The support is fixedly connected with open lifting hook, and the cleaning tool is hung on the lifting hook.

10. The hydraulic formwork apparatus for precast deck girder according to claim 5, wherein: The connecting rod group includes horizontal rod and inclined strut, one end of the horizontal rod and the inclined strut is fixedly connected with the side mould, and the other end intersects and is fixedly connected with the guide rod.

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