Prefabricated box girder module type assembling wedge block adjusting device

Abstract

The utility model discloses a prefabricated box girder module type assembling wedge block adjusting device which comprises a wedge block, a positioning plate is installed at the bottom of the wedge block, four screws are installed on the periphery of the positioning plate in a grooving and welding mode, and nuts are connected to the outer sides of the four screws in a threaded and penetrating mode. Wedge-shaped blocks are correspondingly arranged on the front and rear sides of the bottom of the steel plate. According to the prefabricated box girder modular assembly wedge block adjusting device, a prefabricated box girder pedestal wedge block position bottom plate is of a modular assembly structure, the beam length adjusting range can be effectively increased, the device can adapt to the adjusting range of 0-2.6 m, a wedge block height positioning steel plate is of a bolt adjusting mode, the wedge block adjusting work efficiency can be effectively improved, the size of the wedge block is ensured, and the adjusting efficiency is improved. The prefabricated box girder modular assembly pedestal can longitudinally slide in the pedestal direction in the tensioning process, and the defects of cracks, edge missing, corner falling and the like caused by the fact that the end of a box girder is restrained in the arching process can be overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated box beams, in particular to a prefabricated box beam modular assembly wedge block adjusting device. Background Art

[0002] Prefabricated box girder is a type of beam used in bridge engineering. It is hollow inside with flanges on both sides of the upper part, and its shape is similar to a box, hence its name. This type of beam is a bending member prefabricated by tensioning steel bars by pre-tensioning or post-tensioning methods at an independent site, and then transported to the construction site for installation. Prefabricated box girders are mostly used in infrastructure and construction projects such as roads, bridges, and tunnels. They have the characteristics of beams, that is, the cross-sectional shape of their center lines is relatively narrow and high. They are mainly used for support and bearing, and can make full use of the strength of concrete and steel bars. The production process of prefabricated box girders includes steel bar processing, steel bar binding, hoisting into the beam pedestal, concrete pouring, maintenance, pre-tensioning, initial tensioning, lifting the beam to the beam storage pedestal, final tensioning, grouting and anchor sealing, and waterproofing. The use of prefabricated box girders can accelerate the progress of the project and save construction time;

[0003] The "Prefabricated Box Girder Wedge Block Formwork Slope Adjustment Device" with the public patent CN213829499U includes a top plate, a jack and a bottom plate, a scale and a hydraulic control system; the jack is a hydraulic jack, each jack is connected to the oil circuit of the hydraulic control system, and the hydraulic control system is used to control and adjust the lifting height of each jack; a detachable vertically mounted scale is provided at each corner of the groove side wall of the beam-making pedestal, and the scale is used to observe the lifting height of its adjacent jack. By controlling the jack and the setting of the scale through the hydraulic control system, the longitudinal and transverse slopes of the wedge blocks and the thickness can be adjusted more accurately, simply and quickly, thereby further improving the quality of box girder erection; more effectively controlling the quality of bridge deck paving projects, increasing the service life of bridges and saving costs;

[0004] The span structure of the bridge is affected by local roads and local water systems. The lower structure is often parallel to the roads and water systems, rather than perpendicular to the center line of the route. Prefabricated beams need to use oblique beams, so the length of the prefabricated box beams and the position of the wedge blocks will change greatly. In order to ensure that the box beams are prefabricated in the order of erection, the reserved notches are adjusted by using standard sand and other conventional processing methods. The size of the wedge blocks cannot meet the prefabrication requirements of prefabricated box beams with different beam lengths and oblique angles. At the same time, the conventional pedestal structure needs to adopt a new type of prefabricated box beam pedestal end adjustment device through technical innovation to improve the efficiency and quality of beam making;

[0005] Therefore, we proposed a prefabricated box girder modular assembly wedge block adjustment device that can solve the above problems well. Utility Model Content

[0006] The purpose of the utility model is to provide a modular assembly wedge block adjustment device for prefabricated box girders to solve the problem raised by the above-mentioned background technology that in order to ensure that the box girders are prefabricated in the order of erection, the conventional processing method of adjusting the size of the wedge blocks by using standard sand or the like in the reserved grooves on the market cannot meet the prefabrication requirements of prefabricated box girders with different beam lengths and skew angles.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prefabricated box beam modular assembly wedge block adjustment device, comprising a wedge block, a positioning plate is installed at the bottom, and four screws are welded and installed with slots around the positioning plate, and the four screws are installed at equal intervals, and the outer sides of the four screws are threaded through and connected with nuts;

[0008] It also includes: a box girder pedestal, on which a steel plate is fitted and installed, and wedge blocks are provided on the front and rear sides of the bottom of the steel plate respectively; a box girder pedestal, on which a positioning plate is installed in combination at the bottom, and a wedge block is installed in the internal groove of the pedestal; the wedge block has two limit plates slidably installed in the grooves on the front and rear sides thereof, and the inner sides of the two limit plates are clamped and connected with panels, and the two limit plates are symmetrically arranged about the transverse center line of the wedge block.

[0009] Preferably, the positioning plate has a thickness of 2 cm to ensure the size of the wedge block and to ensure that the transverse slope of the bridge deck after the box girder is erected meets the requirements of the design specifications. The position of the limit plate of the wedge block meets the position of the wedge blocks with different beam lengths, and at the same time can ensure the smooth connection between the wedge block and the positioning plate. The limit plate and the positioning plate are installed according to the beam length and the wedge block parameters, and the gaps on both sides are filled with panels for assembly. After the installation of the limit plate, the positioning plate and the panels on both sides of the gap are completed, the installation of the positioning plate at the bottom of the prefabricated beam wedge block is completed.

[0010] Preferably, the limit plate has grooves at both ends thereof and is equipped with arc blocks which are rotatably installed by a reset spring, and the two arc blocks have the same structure, and the outer ends of the two arc blocks are connected to a row of arc grooves, and the two rows of arc grooves are evenly spaced on both sides of the wedge block. The two arc blocks can be automatically popped into the two rows of arc grooves by the elastic force of the two reset springs themselves, and then the limit plate can be moved and limited.

[0011] Preferably, the inside of the two arc blocks are grooved with torsion springs, and the inner sides of the two torsion springs are wrapped and connected with transmission draws, and the outer ends of the two transmission draws extend through to the upper outside of the wedge block, so that the positions of the two transmission draws after rotation can be elastically reset by the elastic force of the two torsion springs themselves.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] (1) The base plate of the wedge block of the prefabricated box beam pedestal adopts a modular assembly structure, which can effectively increase the adjustment range of the beam length and can adapt to the adjustment range of 0-2.6m. The height positioning steel plate of the wedge block adopts a bolt adjustment method, which can effectively improve the adjustment efficiency of the wedge block and ensure the size of the wedge block;

[0014] (2) The modular assembly pedestal of the prefabricated box girder can slide longitudinally along the pedestal direction during the tensioning process, which can avoid defects such as cracks, missing edges and corners at the ends of the box girder due to the constraints at the ends during the arching process;

[0015] (3) A circular arc wedge block limit plate is set on both sides of the wedge block along the longitudinal direction of the beam. The position of the limit plate is adjusted to meet the position of the wedge block with different beam lengths, while ensuring the smooth connection between the wedge block and the bottom plate of the box beam; the relative height difference between the four corners of the steel plate and the bottom plate of the box beam is adjusted by nuts to ensure the size of the wedge block. According to the beam length and wedge block parameters, the wedge block limit plate and positioning plate are installed, and the gaps on both sides are filled with panels for assembly;

[0016] (4) By using the slots at both ends of the inner limit plate and rotating the arc blocks through the return spring, when the limit distance of the two limit plates needs to be adjusted in the later stage, the two return springs will use their own elastic force to eject the two arc blocks into the two rows of arc grooves in turn, and then the two pulled limit plates can be slid and limited, avoiding the phenomenon that the two limit plates after the later limit are loosened and deviated due to extrusion, thereby improving the limit stability of the two limit plates;

[0017] (5) Furthermore, by utilizing the internal slot of the arc block and rotating the transmission drawer through the torsion spring, when the position of the two movable rear limit plates needs to be moved and reset in the later stage, it is only necessary to manually rotate the transmission drawer to drive the arc block to separate from the row of arc slots, and then the limit plates can be moved and reset. Finally, the elastic force of the torsion spring itself can be used to elastically reset the position of the transmission drawer after rotation, so that it can be convenient for repeated use in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the wedge block and the limiting plate of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the bottom plate and the screw rod of the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the limiting plate of the utility model;

[0022] Figure 5This is a schematic diagram of the three-dimensional structure of the utility model after the wedge block and the limit plate move;

[0023] Figure 6 It is a schematic diagram of a partial top-section structure of a wedge block and a limiting plate of the utility model;

[0024] Figure 7 For this utility model Figure 6 Enlarged structural diagram at A in the middle.

[0025] In the figure: 1. Box girder pedestal; 2. Steel plate; 3. Wedge block; 4. Limit plate; 5. Panel; 6. Positioning plate; 7. Screw; 8. Nut; 9. Arc block; 10. Arc groove; 11. Return spring; 12. Transmission drawer; 13. Torsion spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] This utility provides the following technical solutions:

[0028] Embodiment 1:

[0029] The wedge block 3 has a positioning plate 6 installed at the bottom thereof, and four screws 7 are installed by slots and welding around the positioning plate 6, and the four screws 7 are installed at equal intervals, and nuts 8 are threadedly penetrated and connected to the outer sides of the four screws 7;

[0030] It also includes: a box girder pedestal 1, on which a steel plate 2 is fitted and installed, and wedge blocks 3 are provided at the front and rear sides of the bottom of the steel plate 2, the box girder pedestal 1, on which a positioning plate 6 is installed in combination at the bottom, and the wedge blocks 3 are installed in the internal grooves of the pedestal 1, the wedge blocks 3 have two limit plates 4 slidably installed in the grooves on the front and rear sides, and the inner sides of the two limit plates 4 are clamped and connected with a panel 5, and the two limit plates 4 are symmetrically arranged about the transverse center line of the wedge block 3.

[0031] The positioning plate 6 has a thickness of 2 cm to ensure the size of the wedge block and to ensure that the transverse slope of the bridge deck after the box girder is erected meets the design specification requirements. The position of the wedge block 3 and its limit plate 4 can meet the position of the wedge block 3 with different beam lengths, and at the same time ensure the smooth connection between the wedge block 3 and the positioning plate 6. According to the beam length and the parameters of the wedge block 3, the limit plate 4 and the positioning plate are installed, and the gaps on both sides are filled with panels 5. After the installation of the limit plate 4, the positioning plate 6 and the gap panels 5 on both sides are completed, the installation of the positioning plate 6 at the bottom of the prefabricated beam wedge block 3 is completed.

[0032] like Figure 1-Figure 5 As shown, the box beam pedestal 1, wedge block 3 and positioning plate 6 adopt a modular assembly structure, which can effectively increase the adjustment range of beam length and can adapt to the adjustment range of 0-2.6m. The height positioning steel plate 2 of the wedge block 3 adopts the adjustment method of screw rod 7 and nut 8, which can effectively improve the adjustment efficiency of block 3 and ensure the size of block 3. The prefabricated box beam modular assembly box beam pedestal 1 can slide longitudinally along the direction of the box beam pedestal 1 during the tensioning process, which can avoid defects such as cracks, missing edges and corners of the box beam pedestal 1 due to the constraint of the end portion during the arching process.

[0033] A circular arc-shaped limit plate 4 is arranged on both sides of the wedge block 3 along the longitudinal direction of the beam. The position of the limit plate 4 is to meet the position of the wedge block 3 with different beam lengths, and at the same time can ensure the smooth connection between the wedge block 3 and the positioning plate 6; the relative height difference between the four corners of the steel plate 2 and the positioning plate 6 is adjusted by the screw rod 7 and the nut 8 to ensure the size of the wedge block 3. According to the beam length and the parameters of the wedge block 3, the limit plate 4 and the positioning plate 6 are installed, and the gaps on both sides are assembled and filled with panels 5.

[0034] Embodiment 2 is different from Embodiment 1 in that the limiting distance between the two limiting plates 4 can be adjusted, and it is disclosed that:

[0035] The limiting plate 4 has slots at both ends thereof and is rotatably mounted with an arc block 9 through a reset spring 11. The two arc blocks 9 have the same structure, and the outer ends of the two arc blocks 9 are connected to a row of arc grooves 10. At the same time, the two rows of arc grooves 10 are evenly spaced on both sides of the wedge block 3. The insides of the two arc blocks 9 are slotted with torsion springs 13, and the inner sides of the two torsion springs 13 are wound and connected with transmission drawers 12, and the outer ends of the two transmission drawers 12 extend through and extend to the upper outside of the wedge block 3.

[0036] like Figure 1-Figure 7 As shown, when it is necessary to adjust the limiting distance of the two limiting plates 4, it is only necessary to manually rotate the transmission drawer 12 to drive the arc block 9 to rotate, and then the arc block 9 will be separated from a row of arc grooves 10, and then the limiting distance of the two limiting plates 4 can be adjusted to facilitate stable use in the later stage. When the limiting plates 4 move, the return springs 11 arranged at both ends of the limiting plates 4 will use their own elastic force to pop the two arc blocks 9 into the two rows of arc grooves 10 in turn, and then the moving limiting plates 4 can be slid and limited, so as to avoid the loosening and deviation of the limiting plates 4 in the later stage, thereby improving the stability of the box girder pedestal 1.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the present invention is described in detail with reference to the aforementioned embodiments, it is still possible for technical personnel in the field to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A prefabricated box girder modular assembly wedge block adjustment device, comprising a wedge block (3), a positioning plate (6) being installed at the bottom thereof, and four screw rods (7) being installed by slots and welding on the four sides of the positioning plate (6), and the four screw rods (7) being installed at equal intervals, and nuts (8) being threadedly penetrated and connected to the outer sides of the four screw rods (7); It is characterized in that Also includes: A box beam pedestal (1) is fitted with a steel plate (2) on its upper side, and wedge-shaped blocks (3) are provided at the front and rear sides of the bottom of the steel plate (2); a positioning plate (6) is installed in combination at the bottom of the box beam pedestal (1), and a wedge-shaped block (3) is installed in a groove inside the pedestal (1); The wedge-shaped block (3) has two limit plates (4) slidably mounted on both the front and rear sides thereof with slots therein, and the inner sides of the two limit plates (4) are clamped and connected with a panel (5), and the two limit plates (4) are symmetrically arranged about the transverse center line of the wedge-shaped block (3).

2. The prefabricated box girder modular assembly wedge block adjustment device according to claim 1, characterized in that: The positioning plate (6) has a thickness of 2 cm to ensure the size of the wedge block and to ensure that the transverse slope of the bridge deck after the box girder is erected meets the requirements of the design specifications.

3. The prefabricated box girder modular assembly wedge block adjustment device according to claim 2, characterized in that: The position of the wedge block (3) and its limiting plate (4) can satisfy the position of the wedge block (3) with different beam lengths, while ensuring smooth connection between the wedge block (3) and the positioning plate (6).

4. The prefabricated box girder modular assembly wedge block adjustment device according to claim 3, characterized in that: According to the beam length and the parameters of the wedge block (3), the limit plate (4) and the positioning plate are installed, and the gaps on both sides are filled with panels.

5. The prefabricated box girder modular assembly wedge block adjustment device according to claim 4, characterized in that: After the limiting plate (4), the positioning plate (6), and the gap panels (5) on both sides are installed, the installation of the positioning plate (6) at the bottom of the prefabricated beam wedge block (3) is completed.

6. The prefabricated box girder modular assembly wedge block adjustment device according to claim 1, characterized in that: The limiting plate (4) has slots at both ends thereof and is rotatably mounted with an arc block (9) via a return spring (11). The two arc blocks (9) have the same structure, and the outer ends of the two arc blocks (9) are connected to a row of arc grooves (10). The two rows of arc grooves (10) are evenly spaced and arranged on both sides of the wedge block (3).

7. The prefabricated box girder modular assembly wedge block adjustment device according to claim 6, characterized in that: The two arc-shaped blocks (9) are both grooved inside and provided with torsion springs (13), and the inner sides of the two torsion springs (13) are both wound and connected with transmission drawers (12), and the outer ends of the two transmission drawers (12) extend through and extend to the upper outer side of the wedge-shaped block (3).

Images