Cast-in-place prestressed concrete continuous box girder construction device for expressway

Abstract

The invention discloses an expressway cast-in-place prestressed concrete continuous box girder construction device which structurally comprises a foot stool, a supporting structure, a supporting box and a connecting box, the foot stool is installed at the lower end of the supporting box, the connecting box is fixedly embedded in the side face of the supporting box, and the supporting structure is installed at the upper end of the supporting box. A rotating rod rotates to drive a threaded rod to translate in an adjusting rod, so that a surface plate moves leftwards on a vertical rod, then a sliding plate slides on the inner side of a translation plate, and meanwhile, a limiting block limits sliding of the translation plate below a sliding groove, so that a friction block extrudes a stress plate; furthermore, the supporting rods are kept fixed on the inner sides of the bearing plates in the moving process, and when the surface plate stops sliding, the gap between the two fixing rods is supported on the inner sides of the translation plates, the bearing rods are kept fixedly supported, sliding when moving is stopped is avoided, inaccurate width adjustment is prevented, and then the adjusting effect is achieved according to the width requirement; and the adaptability of construction is improved.

Description

Technical Field

[0001] This invention relates to the field of construction equipment technology, and more specifically, to a construction device for cast-in-place prestressed concrete continuous box girder of highway. Background Technology

[0002] The highway is constructed by pouring prestressed concrete, which is spliced ​​together to form a platform. The bottom is supported by steel pipe scaffolding, and steel bars are used for installation and fixation. The positioning bars are spot welded. The continuous box girder supports the concrete poured above. The shape of the poured concrete is thicker in the middle and thinner on both sides.

[0003] However, when the side support of the box girder is poured, the width of the highway usually varies according to the width requirements of the lanes. During construction, the installation position of the box girder below the side is fixed, which limits the width. The width of the box girder below is not easy to adjust according to the width requirements, resulting in poor adaptability of the box girder construction. In addition, the side box girder is connected by welding, and multiple rods with different inclination angles are used for side support. The support force will also be different due to the different angles of the multiple inclination rods. After support, the center of gravity is prone to change position with the change of weight, which will put too much pressure on the inclination rods and easily cause the center of gravity to be unstable. Summary of the Invention

[0004] The technical solution adopted by this invention to achieve its technical objective is as follows: a construction device for cast-in-place prestressed concrete continuous box girder of highway, the structure of which includes a scaffold, a support structure, a support box, and a connecting box. The scaffold is installed at the lower end of the support box, the connecting box is embedded in the side of the support box, the support structure is installed at the upper end of the support box, the support structure is provided with an arc plate, a vertical rod, an inclined rod, a force-bearing block, a flat plate, a threaded rod, and an adjusting rod. The threaded rod is welded to the right end of the flat plate and passes through the interior of the adjusting rod. The force-bearing block is embedded in the upper end of the flat plate, the inclined rod is engaged in the interior of the force-bearing block, the upper end of the vertical rod is installed inside the flat plate, the lower end of the arc plate is welded to the upper end of the flat plate, the inclined rod is embedded in the inner side of the arc plate, the vertical rod is installed at the upper end of the support box, and there are four inclined rods distributed around the force-bearing block, with each of the four rods having a different inclination angle. The adjusting rod has a rotating rod inside, and the rotating rod is threadedly engaged with the threaded rod.

[0005] As a further improvement of the present invention, the planar plate is provided with a sliding groove, a limiting block, a sliding plate, and a translation plate. The sliding plate is embedded in the upper end of the limiting block, the sliding groove is located inside the translation plate, the upper end of the sliding plate slides in cooperation with the inner side of the translation plate, the limiting block slides in cooperation with the inner side of the translation plate, the force-bearing block is embedded in the upper end of the translation plate, the threaded rod is welded to the right end of the translation plate, the upper end of the vertical rod is installed at the lower end of the limiting block, the inner side of the translation plate is relatively smooth, and the vertical rod remains fixed in a vertical state, which can ensure that the friction between the sliding plate and the inner side of the translation plate is not too large.

[0006] As a further improvement of the present invention, the limiting block is provided with a bearing plate, a force plate, a support rod, and a friction block. The force plate is attached to the outside of the bearing plate, the bearing plate is embedded in the outside of the support rod, the friction block is installed inside both sides of the force plate, the sliding plate is embedded in the upper end of the support rod, the upper end of the vertical rod is installed at the lower end of the support rod, and the force plate is made of rubber, which has the characteristic of high elasticity.

[0007] As a further improvement of the present invention, the sliding plate is provided with a fixed rod, a bearing rod, and a connecting plate. The bearing rod is embedded inside the connecting plate, the fixed rod is installed on the outside of the bearing rod, and the connecting plate is embedded on the upper end of the limiting block. The outside of the fixed rod slides in cooperation with the inside of the translation plate. A rubber ring is provided on the outside of the fixed rod, which has a deformation effect. There are six fixed rods, which are evenly distributed in a ring on the outside of the bearing rod.

[0008] As a further improvement of the present invention, the force-bearing block is provided with a limiting rod, a semi-circular ring, a movable ring, an extrusion plate, and a plastic plate. The semi-circular ring is embedded on the outside of the extrusion plate, and the limiting rod passes through the inside of the movable ring. The limiting rod extrudes and moves against the inside of the extrusion plate. The movable ring is installed on the outside of the plastic plate, and the plastic plate is engaged with the outside of the semi-circular ring. The semi-circular ring and the movable ring are embedded on the upper end of the flat plate. The tilting rod is engaged with the outside of the limiting rod. The inner end of the limiting rod has a triangular structure, and the top end is arc-shaped. The limiting rod moves within the plastic plate and is limited in movement. The center of gravity of the limiting rod is located at the center of the extrusion plate.

[0009] As a further improvement of the present invention, the extrusion plate is provided with a spring, a compression plate, and a hollow groove. The hollow groove is located inside the compression plate, the spring is engaged inside the compression plate, the semi-circular ring is embedded on the outside of the compression plate, and the limiting rod squeezes and moves against the inside of the compression plate. The compression plate is made of plastic and has the characteristics of high elasticity and high friction. Beneficial effects

[0010] 1. In this invention, after the rotating rod rotates, it drives the threaded rod to translate inside the adjusting rod, causing the flat plate to move to the left on the vertical rod. This causes the sliding plate to slide against the inner side of the translation plate. At the same time, the limiting block below the sliding groove limits the sliding of the translation plate, thereby causing the friction block to press against the force plate. During the movement, the support rod remains fixed inside the bearing plate. The friction blocks on both sides prevent the sliding plate at the upper end of the support rod from tilting. When the flat plate stops sliding, the gap between the two fixed rods supports the inner side of the translation plate, maintaining fixed support for the bearing rod and preventing sliding when the movement stops. This prevents inaccurate width adjustment and thus achieves an adjustment effect according to the width requirements, improving the adaptability of construction.

[0011] 2. In this invention, after the arc-shaped plate compresses the inclined rod, the limiting rod is compressed inside the extrusion plate. The compression plate maintains deformation compression through the hollow groove in a vacuum state. At the same time, under the elastic force of the spring, the two sides of the limiting rod are tightly compressed and adhered to each other. This ensures that the greater the compression of the limiting rod on the extrusion plate, the more stable the limiting rod is wrapped by the extrusion plate, making the support for the inclined rod on the outside of the limiting rod more stable and avoiding the uneven force of the inclined rod's distributed support, which could easily cause it to break. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of a construction device for cast-in-place prestressed concrete continuous box girder of a highway according to the present invention.

[0013] Figure 2 This is a side view of a support structure according to the present invention.

[0014] Figure 3 This is a schematic diagram of the side structure of a planar plate according to the present invention.

[0015] Figure 4 This is a three-dimensional structural diagram of a limiting block according to the present invention.

[0016] Figure 5 This is a three-dimensional structural diagram of a sliding plate according to the present invention.

[0017] Figure 6 This is a side view of a force-bearing block according to the present invention.

[0018] Figure 7 This is a schematic diagram of the side structure of an extrusion plate according to the present invention.

[0019] In the diagram: Frame-1, Support Structure-2, Support Box-3, Connecting Box-4, Arc Plate-21, Vertical Rod-22, Inclined Rod-23, Force Block-24, Flat Plate-25, Threaded Rod-26, Adjusting Rod-27, Sliding Groove-e1, Limiting Block-e2, Sliding Plate-e3, Translation Plate-e4, Bearing Plate-e21, Force Plate-e22, Support Rod-e23, Friction Block-e24, Fixed Rod-e31, Bearing Rod-e32, Connecting Plate-e33, Limiting Rod-w1, Semicircular Ring-w2, Movable Ring-w3, Extrusion Plate-w4, Plastic Plate-w5, Spring-w41, Compression Plate-w42, Hollow Groove-w43. Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings: Example

[0021] As attached Figure 1 To be continued Figure 5 As shown: This invention discloses a construction device for cast-in-place prestressed concrete continuous box girder of highway, comprising a scaffold 1, a support structure 2, a support box 3, and a connecting box 4. The scaffold 1 is installed at the lower end of the support box 3, the connecting box 4 is embedded in the side of the support box 3, and the support structure 2 is installed at the upper end of the support box 3. The support structure 2 includes an arc-shaped plate 21, a vertical rod 22, an inclined rod 23, a force-bearing block 24, a flat plate 25, a threaded rod 26, and an adjusting rod 27. The threaded rod 26 is welded to the right end of the flat plate 25 and passes through the interior of the adjusting rod 27. The force-bearing block 24 is embedded in the upper end of the flat plate 25, and the inclined rod... 23 is engaged inside the force-bearing block 24. The upper end of the vertical rod 22 is installed inside the flat plate 25. The lower end of the arc plate 21 is welded to the upper end of the flat plate 25. The inclined rod 23 is embedded in the inner side of the arc plate 21. The vertical rod 22 is installed on the upper end of the support box 3. There are four inclined rods 23, distributed around the force-bearing block 24. The inclination angles of the four rods are different. The adjusting rod 27 has a rotating rod inside. The rotating rod is threadedly engaged with the threaded rod 26. After the rotating rod rotates, it drives the threaded rod 26 to translate inside the adjusting rod 27, so that the flat plate 25 moves to the left on the vertical rod 22, thereby changing the width of the arc plate 21.

[0022] The planar plate 25 is provided with a sliding groove e1, a limiting block e2, a sliding plate e3, and a translation plate e4. The sliding plate e3 is embedded in the upper end of the limiting block e2. The sliding groove e1 is located inside the translation plate e4. The upper end of the sliding plate e3 slides in cooperation with the inner side of the translation plate e4. The limiting block e2 slides in cooperation with the inner side of the translation plate e4. The force-bearing block 24 is embedded in the upper end of the translation plate e4. The threaded rod 26 is welded to the right end of the translation plate e4. The upper end of the vertical rod 22 is installed at the lower end of the limiting block e2. The inner side of the translation plate e4 is relatively smooth, and the vertical rod 22 is kept in a fixed vertical state, which can ensure that the friction between the sliding plate e3 and the inner side of the translation plate e4 is not too large. Thus, when the translation plate e4 moves, the sliding plate e3 slides in cooperation with the inner side of the translation plate e4. At the same time, the limiting block e2 is located below the sliding groove e1 to limit the sliding of the translation plate e4 and prevent the translation plate e4 from tilting when it moves.

[0023] The limiting block e2 includes a bearing plate e21, a force-bearing plate e22, a support rod e23, and a friction block e24. The force-bearing plate e22 is attached to the outside of the bearing plate e21, and the bearing plate e21 is embedded in the outside of the support rod e23. The friction block e24 is installed inside both sides of the force-bearing plate e22. The sliding plate e3 is embedded in the upper end of the support rod e23, and the upper end of the vertical rod 22 is installed at the lower end of the support rod e23. The force-bearing plate e22 is made of rubber and has high elasticity. Thus, the friction block e24 slides inside the sliding groove e1. The sliding of the upper sliding plate e3 limits the translation plate e4, causing the friction block e24 to press against the force-bearing plate e22. During the movement, the support rod e23 remains fixed inside the bearing plate e21. The friction blocks e24 on both sides prevent the sliding plate e3 at the upper end of the support rod e23 from tilting.

[0024] The sliding plate e3 includes a fixed rod e31, a bearing rod e32, and a connecting plate e33. The bearing rod e32 is embedded inside the connecting plate e33, and the fixed rod e31 is installed on the outside of the bearing rod e32. The connecting plate e33 is embedded on the upper end of the limiting block e2. The outside of the fixed rod e31 slides in cooperation with the inside of the translation plate e4. The fixed rod e31 has a rubber ring on its outer side, which has a deformation effect. There are six fixed rods e31, which are evenly distributed in a ring on the outside of the bearing rod e32. When the sliding stops, the rubber ring is squeezed inward and deformed, so that the gap between two fixed rods e31 is supported on the inside of the translation plate e4, which keeps the bearing rod e32 fixed and prevents the bearing rod e32 from continuing to rotate. As a result, when the sliding stops, the connecting plate e33 will not move, thus preventing inaccurate width adjustment. The specific usage and function of this embodiment are as follows: In this invention, the rotating rod rotates, causing the threaded rod 26 to translate inside the adjusting rod 27, which in turn causes the flat plate 25 to move to the left on the vertical rod 22, thereby changing the width of the arc plate 21. When the translation plate e4 in the flat plate 25 moves, the sliding plate e3 slides inside the translation plate e4. Simultaneously, the limiting block e2, positioned below the sliding groove e1, limits the sliding of the translation plate e4, causing the friction block e24 to slide inside the sliding groove e1. The sliding of the upper sliding plate e3 limits the translation plate e4, causing the friction block e24 to press against the force plate e22. During the movement, the support rod e23 rests on the bearing plate e22. The inner side of 21 remains fixed, and the friction blocks e24 on both sides prevent the sliding plate e3 at the upper end of the support rod e23 from sliding and tilting, preventing the translation plate e4 from tilting when it moves. When the flat plate 25 stops sliding, the rubber ring is squeezed and deformed inward, so that the gap between the two fixed rods e31 is supported on the inner side of the translation plate e4, and the bearing rod e32 is fixedly supported, preventing the bearing rod e32 from continuing to rotate. As a result, when the sliding stops, the connecting plate e33 will not move, preventing sliding when it stops moving, preventing inaccurate width adjustment, and thus producing an adjustment effect according to the width requirements, improving the adaptability of construction. Example

[0025] As attached Figure 6 To be continued Figure 7 As shown: The force-bearing block 24 is equipped with a limiting rod w1, a semi-circular ring w2, a movable ring w3, a pressing plate w4, and a plastic plate w5. The semi-circular ring w2 is embedded on the outside of the pressing plate w4. The limiting rod w1 passes through the inside of the movable ring w3 and presses against the inside of the pressing plate w4. The movable ring w3 is installed on the outside of the plastic plate w5, and the plastic plate w5 is engaged with the outside of the semi-circular ring w2. The semi-circular ring w2 and the movable ring w3 are embedded in the upper end of the flat plate 25. The tilting rod 23 is engaged with the limiting rod w1. On the side, the inner end of the limiting rod w1 has a triangular structure and the top is arc-shaped. The limiting rod w1 is limited to move inside the plastic plate w5. The center of gravity of the limiting rod w1 is located at the center of the extrusion plate w4. Thus, after the arc plate 21 extrudes the inclined rod 23, the limiting rod w1 is compressed inside the extrusion plate w4, so that the limiting rod w1 is limited and engaged within the semi-circular ring w2 and the movable ring w3. At the same time, when the gravity increases, the limiting rod w1 extrudes and fixes the extrusion plate w4 more tightly, and the support for the inclined rod 23 on the outside of the limiting rod w1 is more stable.

[0026] The extrusion plate w4 is equipped with a spring w41, a compression plate w42, and a hollow groove w43. The hollow groove w43 is located inside the compression plate w42, the spring w41 is engaged inside the compression plate w42, the semi-circular ring w2 is embedded on the outside of the compression plate w42, and the limiting rod w1 presses against the inside of the compression plate w42. The compression plate w42 is made of plastic and has the characteristics of high elasticity and high friction. Thus, the limiting rod w1 compresses the compression plate w42. The compression plate w42 maintains deformation compression through the hollow groove w43 in a vacuum state. At the same time, under the elastic force of the spring w41, the limiting rod w1 is tightly pressed against both sides, ensuring that the greater the compression of the limiting rod w1 against the extrusion plate w4, the more stable the limiting rod w1 is wrapped by the extrusion plate w4. The specific usage and function of this embodiment are as follows: In this invention, after the arc plate 21 presses the inclined rod 23, the limiting rod w1 is compressed inside the pressing plate w4, so that the limiting rod w1 is limited and engaged within the semi-circular ring w2 and the movable ring w3. At the same time, when the gravity increases, the limiting rod w1 compresses the compression plate w42 in the pressing plate w4. The compression plate w42 maintains deformation compression through the hollow groove w43 in a vacuum state. At the same time, under the elastic force of the spring w41, the limiting rod w1 is tightly compressed on both sides, ensuring that the greater the compression of the limiting rod w1 on the pressing plate w4, the more stable the limiting rod w1 is wrapped by the pressing plate w4, making the support for the inclined rod 23 on the outside of the limiting rod w1 more stable, and avoiding the uneven force of the inclined rod 23's distributed support, which could easily lead to breakage. Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solutions described in this invention, or by designing similar technical solutions by those skilled in the art under the inspiration of the technical solutions described in this invention, falls within the protection scope of this invention.

Claims

1. A construction device for cast-in-place prestressed concrete continuous box girder of highway, the structure of which includes a scaffold (1), a support structure (2), a support box (3), and a connecting box (4), characterized in that: The leg (1) is installed at the lower end of the support box (3), the connecting box (4) is embedded in the side of the support box (3), and the support structure (2) is installed at the upper end of the support box (3); The support structure (2) includes an arc plate (21), a vertical rod (22), an inclined rod (23), a force-bearing block (24), a flat plate (25), a threaded rod (26), and an adjusting rod (27). The threaded rod (26) is welded to the right end of the flat plate (25), and the threaded rod (26) passes through the inside of the adjusting rod (27). The force-bearing block (24) is embedded in the upper end of the flat plate (25), and the inclined rod (23) is engaged inside the force-bearing block (24). The upper end of the vertical rod (22) is installed inside the flat plate (25), the lower end of the arc plate (21) is welded to the upper end of the flat plate (25), the inclined rod (23) is embedded in the inner side of the arc plate (21), and the vertical rod (22) is installed on the upper end of the support box (3).

2. The construction device for cast-in-place prestressed concrete continuous box girder of highway according to claim 1, characterized in that: The planar plate (25) is provided with a sliding groove (e1), a limiting block (e2), a sliding plate (e3), and a translation plate (e4). The sliding plate (e3) is embedded in the upper end of the limiting block (e2). The sliding groove (e1) is located inside the translation plate (e4). The upper end of the sliding plate (e3) is slidably engaged with the inner side of the translation plate (e4). The limiting block (e2) is slidably engaged with the inner side of the translation plate (e4). The force-bearing block (24) is embedded in the upper end of the translation plate (e4). The threaded rod (26) is welded to the right end of the translation plate (e4). The upper end of the vertical rod (22) is installed at the lower end of the limiting block (e2).

3. The construction device for cast-in-place prestressed concrete continuous box girder of highway according to claim 2, characterized in that: The limiting block (e2) is provided with a bearing plate (e21), a force plate (e22), a support rod (e23), and a friction block (e24). The force plate (e22) is attached to the outside of the bearing plate (e21), the bearing plate (e21) is embedded in the outside of the support rod (e23), the friction block (e24) is installed inside both sides of the force plate (e22), the sliding plate (e3) is embedded in the upper end of the support rod (e23), and the upper end of the vertical rod (22) is installed at the lower end of the support rod (e23).

4. The construction device for cast-in-place prestressed concrete continuous box girder of highway according to claim 2, characterized in that: The sliding plate (e3) is provided with a fixed rod (e31), a bearing rod (e32), and a connecting plate (e33). The bearing rod (e32) is embedded inside the connecting plate (e33), the fixed rod (e31) is installed on the outside of the bearing rod (e32), and the connecting plate (e33) is embedded on the upper end of the limiting block (e2). The outside of the fixed rod (e31) slides in cooperation with the inside of the translation plate (e4).

5. The construction device for cast-in-place prestressed concrete continuous box girder of highway according to claim 1, characterized in that: The force-bearing block (24) is provided with a limiting rod (w1), a semi-circular ring (w2), a movable ring (w3), a pressing plate (w4), and a plastic plate (w5). The semi-circular ring (w2) is embedded on the outside of the pressing plate (w4). The limiting rod (w1) passes through the inside of the movable ring (w3). The limiting rod (w1) presses against the inside of the pressing plate (w4). The movable ring (w3) is installed on the outside of the plastic plate (w5). The plastic plate (w5) is engaged on the outside of the semi-circular ring (w2). The semi-circular ring (w2) and the movable ring (w3) are embedded on the upper end of the flat plate (25). The tilting rod (23) is engaged on the outside of the limiting rod (w1).

6. A construction device for cast-in-place prestressed concrete continuous box girder of highway according to claim 5, characterized in that: The extrusion plate (w4) is provided with a spring (w41), a compression plate (w42), and a hollow groove (w43). The hollow groove (w43) is located inside the compression plate (w42). The spring (w41) is engaged inside the compression plate (w42). The semi-circular ring (w2) is embedded on the outside of the compression plate (w42). The limiting rod (w1) presses against the inside of the compression plate (w42).

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