A prefabricated box girder hydraulic steel form

Abstract

The utility model relates to a prefabricated box girder hydraulic steel form plate belongs to bridge form plate technical field, including bottom form plate, outside form plate, beam frame, inner form plate, end form plate, comb plate, top open mould oil cylinder, transverse translation slide plate, base plate, outside form plate includes panel, support plate, butt joint bending edge, support groove board, the butt joint bending edge bottom is equipped with the support pad, the outside upper portion of bottom form plate is fixed with the support frame board, the inside fixed damping rubber pad of support frame board, the base plate is hinged with horizontal -moving oil cylinder, the top of transverse translation slide plate is fixed with two lifting hydraulic cylinders, and lifting hydraulic cylinder connects beam frame. The utility model discloses the butt joint bending edge of outside form plate's panel bottom holds up through support groove board and support pad, is more stable, prevents deformation to the inside of support frame board and is equipped with damping rubber pad, when outside form plate and bottom form plate butt joint, damping rubber pad first contacts with support groove board inner wall, carries out damping buffer, prevents direct impact and causes damage.

Description

Technical Field

[0001] This utility model relates to a hydraulic steel formwork for precast box girders, belonging to the field of bridge formwork technology. Background Technology

[0002] In the current highway construction process, precast beams play a crucial role as the superstructure, effectively shortening the construction cycle.

[0003] The current hydraulic formwork for precast box girders includes a movable bottom formwork, two outer formworks on both sides, an inner formwork in the middle, and end formworks. In order to make the outer formworks smoothly connect with the bottom formworks on both sides, a horizontal connecting flange is set at the bottom of the outer formwork panel. However, the bottom of the current connecting flange is not supported, which makes the structure unstable and prone to deformation. Furthermore, the outer formworks will directly impact the bottom formwork when they connect, which can easily damage the formwork. Utility Model Content

[0004] This utility model provides a hydraulic steel formwork for precast box girders, which solves the problems mentioned in the background art.

[0005] This utility model relates to a hydraulic steel formwork for precast box girders, including a bottom formwork, an outer formwork, a beam frame, an inner formwork, an end formwork, a comb plate, and a top opening cylinder. A transverse sliding plate is provided below the outer side of the beam frame, and a base plate is provided below the transverse sliding plate. The outer formwork includes a panel and a support plate. The bottom inner side of the panel has a butt-joint bending edge. A U-shaped support plate is fixed to the bottom of the support plate. The top of the inner end of the support plate is welded and fixed to the bottom of the inner end of the butt-joint bending edge. A support pad is provided at the bottom of the butt-joint bending edge. A support frame plate supporting the top outward-turned edge is fixed to the upper outer side of the bottom formwork. A shock-absorbing rubber pad is fixed inside the support frame plate. A sealing rubber pad is embedded in the upper outer side of the support frame plate. The top of the sealing rubber pad is flush with the bottom of the inner side of the butt-joint bending edge. A transverse sliding cylinder is hinged to the base plate. The other end of the transverse sliding cylinder is hinged to the transverse sliding plate. Two lifting hydraulic cylinders are fixed to the top of the transverse sliding plate. A cross frame plate is hinged to the top of the lifting hydraulic cylinder and fixed to the beam frame.

[0006] As a preferred embodiment, the bottom of the base plate is provided with two tracks along the front-to-back direction, and the tracks are equipped with rotatable wheels mounted on the base plate. The wheels are connected to a drive motor, which can facilitate the quick and easy movement of the installed outer template.

[0007] As a preferred option, the front and rear sides of the lateral sliding plate are fixed with U-shaped limiting hook plates, and the front and rear sides of the top of the base plate are fixed with limiting flanges that cooperate with the limiting hook plates, making the lateral sliding plate move more smoothly.

[0008] As a preferred embodiment, multiple vertical support beams are fixed to the outer side of the beam frame along the front-to-back direction. These support beams are fixed to the crossbeams, and telescopic sleeves are fixed to the bottom of each support beam. A telescopic support rod is threaded into the lower end of the telescopic sleeve, and a foot plate is fixed to the bottom of the telescopic support rod. The outer end of the foot plate has an upward-curved edge. By using the telescopic support rods and telescopic sleeves, after the bottom formwork is aligned with the outer formwork, the telescopic support rods can be rotated to adjust the height of the foot plate, ensuring that the bottom of the foot plate rests on the ground, thus providing greater stability to the bottom of the beam frame.

[0009] As a preferred embodiment, the top of the telescopic sleeve is fitted with a fixing sleeve, and the top of the fixing sleeve is fixed with a connecting plate. Both the top outer side of the connecting plate and the bottom outer side of the supporting beam / column have fixing flanges that are secured by bolts. The top of the fixing sleeve extends through the connecting plate into the inner hole of the supporting beam / column. Both the fixing sleeve and the telescopic sleeve have fixing holes with fixing pins inside. When dismantling the outer formwork, the fixing pins can be pulled out to quickly release the bottom support of the beam / column, facilitating the retraction of the lifting hydraulic cylinder for dismantling.

[0010] As a preferred option, reinforced beams are fixed between the supporting beams and the crossbeams, making the structure more stable.

[0011] As a preferred embodiment, the bottom of the comb plate has an L-shaped bend that bends outward and wraps around the top outer side of the support plate and the top of the panel. The L-shaped bend has fastening bolts, which can be used to quickly position and install the comb plate. The top outer side of the support plate has a strip hole along the front-back direction, and the fastening bolts are set in the strip hole, which can adjust the position of the comb plate along the front-back direction, so that the clearance on the comb plate can avoid the piston rod end of the top mold opening cylinder.

[0012] As a preferred embodiment, limiting plates are provided on both the upper and lower sides of the inner side of the strip-shaped hole. The limiting plates are fixed to the support plate, and reinforcing ribs are fixed to the outer side of the comb plate. The bottom of the reinforcing ribs is supported on the top of the beam frame. The limiting plates prevent the inner end head from rotating when the nut on the fastening bolt is rotated and tightened.

[0013] This utility model has the following beneficial effects:

[0014] The bottom bend of the outer template panel is supported by the groove plate and support pad, making it more stable and preventing deformation. The upper outer side of the bottom template is fixed with a support frame plate that supports the top outward flange, which can also prevent deformation. The support frame plate is equipped with shock-absorbing rubber pads. When the outer template and the bottom template are connected, the shock-absorbing rubber pads first contact the inner wall of the groove plate to absorb shock and prevent damage from direct impact. The beam frame is connected with a transverse hydraulic cylinder and a lifting hydraulic cylinder, which can facilitate mold opening. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 for Figure 1 Partial structural diagram Figure 1 ;

[0017] Figure 3 for Figure 1 Partial structural diagram Figure 2 ;

[0018] Figure 4 This is a side view of the telescopic support rod and telescopic sleeve.

[0019] In the diagram: 1. Reinforcing rib plate; 2. Comb plate; 3. Outer template; 31. Panel; 32. Support plate; 33. Support pad; 34. Slotted plate; 4. Inner template; 5. Bottom template; 51. Support frame plate; 52. Shock-absorbing rubber pad; 6. Base plate; 7. Telescopic support rod; 8. Lateral movement cylinder; 9. Telescopic sleeve; 10. Limiting flange; 11. Limiting hook plate; 12. Lateral sliding plate; 13. Lifting hydraulic cylinder; 14. Support beam and column; 15. Horizontal frame plate; 16. Reinforcing beam and column; 17. Beam frame; 18. Top opening cylinder; 19. Limiting plate; 20. Foot plate; 21. Fixing sleeve; 22. Fixing pin. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Example 1, as Figures 1 to 4 As shown, this utility model is a precast box girder hydraulic steel formwork, including a bottom formwork 5, an outer formwork 3, a beam frame 17, an inner formwork 4, an end formwork, a comb plate 2, and a top opening cylinder 18. A transverse sliding plate 12 is provided below the outer side of the beam frame 17, and a base plate 6 is provided below the transverse sliding plate 12. The outer formwork 3 includes a panel 31 and a support plate 32. A butt-joint bending edge is provided on the inner bottom side of the panel 31. A U-shaped groove plate 34 is fixed to the bottom of the support plate 32. The top of the inner end of the groove plate 34 is welded and fixed to the bottom of the inner end of the butt-joint bending edge. A support pad 33 is provided. A support frame plate 51 supporting the top outward flange is fixed on the upper outer side of the bottom template 5. A shock-absorbing rubber pad 52 is fixed inside the support frame plate 51. A sealing rubber pad is embedded on the upper outer side of the support frame plate 51. The top of the sealing rubber pad is flush with the bottom of the inner side of the butt bend. A transverse hydraulic cylinder 8 is hinged on the base plate 6. The other end of the transverse hydraulic cylinder 8 is hinged to the transverse sliding plate 12. Two lifting hydraulic cylinders 13 are fixed on the top of the transverse sliding plate 12. A cross frame plate 15 is hinged on the top of the lifting hydraulic cylinder 13. The cross frame plate 15 is fixed on the beam frame 17.

[0022] During pouring, the lifting hydraulic cylinder 13 and the horizontal moving cylinder 8 extend in coordination, driving the outer template 3 closer to the bottom template 5, so that the inner side of the butt bend edge is flush with the top outward flange of the bottom template 5. The shock-absorbing rubber pad 52 can buffer the impact and reduce damage during the butt bend. Then, the inner template 4 and the end template are installed, and the pouring can be carried out. During the pouring, the inner side of the butt bend edge and the bottom of the top outward flange of the bottom template 5 are provided with support structures to prevent deformation under stress and make it more solid. After the concrete box girder is poured, when the strength reaches the demolding condition, the end templates at both ends are removed. Then, the lifting hydraulic cylinder 13 and the horizontal moving cylinder 8 retract in coordination to complete the demolding of the outer template 3.

[0023] In Example 2, based on Example 1, the bottom of the base plate 6 is provided with two tracks running in the front-to-back direction. The tracks are equipped with rotatable wheels mounted on the base plate 6, and the wheels are connected to a drive motor. Before pouring, the drive motor moves the wheels along the tracks, moving the outer template 3 to the pouring position.

[0024] The front and rear sides of the transverse sliding plate 12 are fixed with U-shaped limiting hook plates 11, and the front and rear sides of the top of the base plate 6 are fixed with limiting flanges 10 that cooperate with the limiting hook plates 11.

[0025] Multiple vertical support beams 14 are fixed to the outer side of the beam frame 17 along the front-to-back direction. The support beams 14 are fixed to the crossbeam 15. A telescopic sleeve 9 is fixed to the bottom of the support beams 14. A telescopic support rod 7 is internally threaded to the lower end of the telescopic sleeve 9. A foot plate 20 is fixed to the bottom of the telescopic support rod 7. The outer end of the foot plate 20 has an upward bent edge. After the outer template 3 is connected to the bottom template 5, the telescopic support rod 7 can be rotated to adjust the height of the foot plate 20, so that the bottom of the foot plate 20 is supported on the ground, providing bottom support for the beam frame 17 and the entire outer template 3. This prevents insufficient support strength and potential safety hazards caused by relying solely on the lifting hydraulic cylinder 13 for support.

[0026] The top of the telescopic sleeve 9 is fitted with a fixing sleeve 21, and a connecting plate is fixed to the top of the fixing sleeve 21. The top outer side of the connecting plate and the bottom outer side of the supporting beam 14 are both provided with fixing flanges that are fixed by bolts. The top of the fixing sleeve 21 extends through the connecting plate into the inner hole of the supporting beam 14. Both the fixing sleeve 21 and the telescopic sleeve 9 are provided with fixing holes, and fixing pins 22 are provided in the fixing holes. Before demolding the outer template 3, the fixing pins 22 are pulled out, which releases the locking of the fixing sleeve 21 and the telescopic sleeve 9. When the lifting hydraulic cylinder 13 retracts downwards to demold, the telescopic sleeve 9 can slide axially along the fixing sleeve 21 without obstruction, thus eliminating the need to manually tighten each telescopic support rod 7 for demolding.

[0027] A reinforcing beam 16 is fixed between the supporting beam 14 and the crossbeam 15.

[0028] The bottom of the comb plate 2 has an L-shaped bend that bends outward to wrap around the top outer side of the support plate 32 and the top of the panel 31. A fastening bolt is installed on the L-shaped bend. The top outer side of the support plate 32 has a strip-shaped hole running in the front-back direction, and the fastening bolt is located within the strip-shaped hole. When installing the comb plate 2, the L-shaped bend can be clipped onto the top outer side of the support plate 32 and the top of the panel 31. Then, the fastening bolt is inserted, and the position of the comb plate 2 is adjusted in the front-back direction so that the top mold-opening cylinder 18 is positioned at the clearance opening of the comb plate 2. Finally, the fastening bolt is tightened.

[0029] Limiting plates 19 are provided on both the upper and lower sides of the inner side of the strip-shaped hole. The limiting plates 19 are fixed on the support plate 32. A reinforcing rib plate 1 is fixed on the outer side of the comb plate 2. The bottom of the reinforcing rib plate 1 is supported on the top of the beam frame 17. When the nut on the fastening bolt is rotated, the head of the fastening bolt can be limited by the limiting plate 19, so that the bolt head will not rotate with it, making it convenient to tighten the nut.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0031] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A precast box girder hydraulic steel formwork, comprising a bottom formwork (5), an outer formwork (3), a beam frame (17), an inner formwork (4), an end formwork, a comb plate (2), and a top opening cylinder (18), wherein a transverse sliding plate (12) is provided below the outer side of the beam frame (17), and a base plate (6) is provided below the transverse sliding plate (12), and the outer formwork (3) comprises a panel (31) and a support plate (32), wherein the bottom inner side of the panel (31) is provided with a butt-joint bending edge, characterized in that: A U-shaped support plate (34) is fixed at the bottom of the support plate (32). The top of the inner end of the support plate (34) is welded and fixed at the bottom of the inner end of the butt bend. A support pad (33) is provided at the bottom of the butt bend. A support frame plate (51) supporting the top outward flange is fixed on the upper outer side of the bottom template (5). A shock-absorbing rubber pad (52) is fixed inside the support frame plate (51). A sealing rubber pad is embedded on the upper outer side of the support frame plate (51). The top of the sealing rubber pad is flush with the bottom of the inner side of the butt bend. A transverse hydraulic cylinder (8) is hinged on the base plate (6). The other end of the transverse hydraulic cylinder (8) is hinged to the transverse sliding plate (12). Two lifting hydraulic cylinders (13) are fixed on the top of the transverse sliding plate (12). A cross frame plate (15) is hinged on the top of the lifting hydraulic cylinder (13). The cross frame plate (15) is fixed on the beam frame (17).

2. The hydraulic steel formwork for precast box girders according to claim 1, characterized in that: The bottom of the base plate (6) is provided with two tracks along the front and back direction. The tracks are provided with rotatable wheels mounted on the base plate (6), and the rotatable wheels are connected to a drive motor.

3. The hydraulic steel formwork for precast box girders according to claim 2, characterized in that: The front and rear sides of the transverse sliding plate (12) are fixed with U-shaped limiting hook plates (11), and the front and rear sides of the top of the base plate (6) are fixed with limiting flanges (10) that cooperate with the limiting hook plates (11).

4. The hydraulic steel formwork for precast box girders according to claim 1, characterized in that: Multiple vertical support beams (14) are fixed on the outer side of the beam frame (17) along the front-back direction. The support beams (14) are fixed to the cross frame plate (15). A telescopic sleeve (9) is fixed at the bottom of the support beams (14). A telescopic support rod (7) is connected to the lower end of the telescopic sleeve (9) by internal thread. A foot plate (20) is fixed at the bottom of the telescopic support rod (7). The outer end of the foot plate (20) is provided with an upward bent edge.

5. A precast box girder hydraulic steel formwork according to claim 4, characterized in that: The top of the telescopic sleeve (9) is fitted with a fixing sleeve (21), and the top of the fixing sleeve (21) is fixed with a connecting plate. The top outer side of the connecting plate and the bottom outer side of the support beam (14) are both provided with fixing flanges that are fixed by bolts. The top of the fixing sleeve (21) passes through the connecting plate and extends into the inner hole of the support beam (14). The fixing sleeve (21) and the telescopic sleeve (9) are both provided with fixing holes, and fixing pins (22) are provided in the fixing holes.

6. A precast box girder hydraulic steel formwork according to claim 5, characterized in that: A reinforcing beam (16) is fixed between the supporting beam (14) and the crossbeam (15).

7. A precast box girder hydraulic steel formwork according to claim 1, characterized in that: The bottom of the comb plate (2) is provided with an L-shaped bend that bends outward and wraps around the top outer side of the support plate (32) and the top of the panel (31). The L-shaped bend is provided with fastening bolts. The top outer side of the support plate (32) is provided with a strip hole along the front-back direction. The fastening bolts are set in the strip hole.

8. A precast box girder hydraulic steel formwork according to claim 7, characterized in that: Limiting plates (19) are provided on the upper and lower sides of the inner side of the strip hole. The limiting plates (19) are fixed on the support plate (32). The outer side of the comb plate (2) is fixed with a reinforcing rib plate (1). The bottom of the reinforcing rib plate (1) is supported on the top of the beam frame (17).

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