Slidable multi-box type grading falling frame control device

Abstract

The utility model discloses a slidable multi-box type grading landing control device which comprises two steel pipe stand columns, concrete pile heads are installed at the top ends of the steel pipe stand columns, unloading devices are installed at the tops of the concrete pile heads, a steel box beam is arranged between the tops of the unloading devices, each unloading device comprises a steel grit cylinder, and the steel grit cylinders are arranged on the steel grit cylinders. The steel grit barrel comprises a steel grit barrel body, a barrel plug is arranged in the steel grit barrel body, a plurality of layers of partition plates are arranged in the steel grit barrel body and located below the barrel plug, and the space between every two adjacent partition plates is filled with steel grit. The steel grit barrel has the advantages that the steel grit is filled in the steel grit barrel body, the allowable pressure bearing capacity of the steel grit is high, the bearing capacity is improved, and meanwhile the size of the steel grit barrel is reduced; the steel grits are separated by the partition plates and placed in a layered mode according to different heights, the steel grits with the corresponding heights are released according to instructions during falling, longitudinal force generated by temperature deformation of the steel box girder can be reduced, the sliding rails are matched with the MGE plates, friction force is reduced in a yellow head smearing mode, and the longitudinal force generated by deformation of the girder body is released.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering construction, in particular to a slidable multi-box type graded drop frame control device. Background Art

[0002] With the continuous development and innovation of materials and production technologies, bridge spans are constantly increasing, and structural forms are also changing with each passing day. Therefore, higher requirements are placed on bridge construction methods. In the cantilever assembly process of variable-section steel box girders, due to the large span of the structure, the rigidity of the steel box girder itself is insufficient to withstand the rigidity requirements of large cantilever construction. Therefore, temporary supports are required during the construction process to prevent large deflections and stresses in the steel box girder itself.

[0003] In the actual construction process, due to the long construction span and the large temperature difference between summer and winter, the steel box girder will produce expansion and contraction deformation under the action of the temperature difference, thereby generating a large longitudinal horizontal force on the top of the support, posing a great hidden danger to the overall stability of the temporary support. At present, sand barrels or unloading blocks are commonly used for temporary support dismantling, which have the disadvantages of low bearing capacity, imprecise control of dismantling precision, and inability to release the horizontal force generated by the expansion and contraction of the bridge.

[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a slidable multi-box type graded drop frame control device.

[0006] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: a sliding multi-box graded drop frame control device, comprising two steel pipe columns, the tops of the steel pipe columns are each installed with concrete pile heads, the tops of the concrete pile heads are installed with a drop-off device, a steel box beam is provided between the tops of the drop-off devices, the drop-off device comprises a steel sand cylinder, a barrel plug is provided inside the steel sand cylinder, several layers of partitions are provided below the barrel plug in the steel sand cylinder, and steel sand is filled between adjacent partitions, sealing and sand discharge mechanisms are installed on both sides of the steel sand cylinder between the partitions, an MGE plate is installed at the bottom of the steel sand cylinder, a sliding track is installed on the top surface of the concrete pile head, and the MGE plate is slidably set on the sliding track.

[0007] Preferably, the sealing and sand removal mechanism is a bolt, the bolt thread is installed on the outer wall of the steel sand cylinder, and the bolt is located between the partitions.

[0008] Preferably, scale lines are provided on both sides of the barrel plug, and triangular supporting side plates are fixedly installed on both ends of the sliding track.

[0009] Preferably, the distances between adjacent partitions are different, and the distances between adjacent partitions gradually increase from top to bottom.

[0010] Preferably, the sealing and sand discharge mechanism includes four sand outlets opened on both sides of the outer wall of the steel sand cylinder, and sealing support plates are installed on both sides of the outer wall of the steel sand cylinder. One end of the sealing support plate is provided with four groups of external outlets connected to the sand outlets, and the sealing support plate is provided with an inclined sand guide groove connected to the external outlet, and a sealing block extending into the sand outlet is provided in the external outlet.

[0011] Preferably, the end of the sealing block away from the sand outlet is connected to a pull rod extending to the outside of the external outlet, and a baffle is installed on the pull rod. Connecting plates are fixedly provided on the upper and lower sides of one end of the sealing support plate, and the connecting plates are installed on the outer wall of the steel sand cylinder through threaded holes and fixing bolts.

[0012] The utility model provides a slidable multi-box graded drop frame control device, which has the following beneficial effects:

[0013] By hoisting the concrete pile head on the steel pipe column and fixing it, installing the unloading device on the concrete pile head, and then setting the steel box girder on the unloading device, before installing the unloading device, first install the MGE plate at the bottom of the steel sand cylinder, fill the steel sand cylinder with steel sand on the ground, and after reaching the required thickness, separate each layer of steel sand with a partition, and then put the cylinder plug into the steel sand cylinder, fix the sliding track on the top surface of the concrete pile head, hoist the unloading device after completion, set the MGE plate on the sliding track, and apply interface grease between the steel sand cylinder and the MGE plate. To reduce friction, when dropping the frame, pull out the bolts of the sand layer at the corresponding height according to the instructions, take out the steel sand and lower the height of the steel sand cylinder to achieve dropping. The interior of the steel sand cylinder of the utility model is filled with steel sand, and the allowable pressure bearing capacity of the steel sand is relatively strong. The volume of the steel sand cylinder is reduced while the bearing capacity is improved. The steel sand is separated by partitions and placed in layers at different heights. When dropping the frame, release the steel sand at the corresponding height according to the instructions, which can reduce the longitudinal force caused by the temperature deformation of the steel box beam. Utilize the sliding track in conjunction with the MGE plate, reduce the friction by applying the yellow head, and release the longitudinal force caused by the deformation of the beam body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1This is a front view of a slidable multi-box graded drop frame control device according to an embodiment of the present utility model;

[0016] Figure 2 This is a structural schematic diagram of an unloading device in a slidable multi-box type graded unloading rack control device according to an embodiment of the present utility model;

[0017] Figure 3 This is a structural schematic diagram of a sand outlet in a slidable multi-box type grading drop frame control device according to an embodiment of the present utility model;

[0018] Figure 4 This is a structural diagram of a blocking and sand removal mechanism in a slidable multi-box type grading drop frame control device according to an embodiment of the present utility model;

[0019] Figure 5 This is a structural diagram of a steel sand drum in a slidable multi-box type grading drop frame control device according to an embodiment of the present utility model;

[0020] Figure 6 The present invention is a schematic structural diagram of a sliding unloading device in a slidable multi-box graded unloading rack control device for releasing longitudinal loads according to an embodiment of the present invention.

[0021] In the picture:

[0022] 1. Steel pipe column; 2. Concrete pile head; 3. Unloading device; 4. Steel box girder; 5. Steel sand barrel; 6. Barrel plug; 7. Partition; 8. Steel sand; 9. Sealing and sand discharge mechanism; 10. MGE plate; 11. Sliding track; 12. Scale line; 13. Triangular support side plate; 14. Sand outlet; 15. Sealing support plate; 16. External outlet; 17. Inclined sand guide trough; 18. Sealing block; 19. Pull rod; 20. Blocking piece; 21. Connecting plate; 22. Threaded hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-6The utility model provides a sliding multi-box graded drop frame control device, comprising two steel pipe columns 1, the tops of the steel pipe columns 1 are each installed with a concrete pile head 2, the tops of the concrete pile heads 2 are installed with a drop-off device 3, and a steel box beam 4 is provided between the tops of the drop-off devices 3. By hoisting and fixing the concrete pile heads 2 on the steel pipe columns 1, the drop-off device 3 is installed on the concrete pile heads 2, and then the steel box beam 4 is placed on the drop-off device 3. The drop-off device 3 comprises a steel sand barrel 5, the interior of the steel sand barrel 5 is provided with a barrel plug 6, and several layers of partitions 7 are provided below the barrel plug 6 in the steel sand barrel 5, and steel sand 8 is filled between adjacent partitions 7. A sealing and sand discharge mechanism 9 is installed on both sides of the steel sand barrel 5 between the partitions 7. An MGE plate 10 is installed at the bottom of the sand barrel 5, and a sliding track 11 is installed on the top surface of the concrete pile head 2. The MGE plate 10 is slidably set on the sliding track 11. Before installing the unloading device 3, the MGE plate 10 is first installed at the bottom of the steel sand barrel 5, and steel sand 8 is filled into the steel sand barrel 5 on the ground. After reaching the required thickness, each layer of steel sand 8 is separated by a partition 7, and then the barrel plug 6 is placed into the steel sand barrel 5. The sliding track 11 is fixed to the top surface of the concrete pile head 2. After the unloading device 3 is hoisted, the MGE plate 10 is set on the sliding track 11, and interface grease is applied between the steel sand barrel 5 and the MGE plate 10 to reduce friction. When the frame is dropped, according to the instructions, the bolts of the sand layer of the corresponding height are pulled out, the steel sand 8 is taken out, and the height of the steel sand barrel 5 is lowered to achieve the drop.

[0025] In one embodiment, please refer to the appendix of the specification. Figure 2 As shown, the blocking and sand discharge mechanism 9 is a bolt, which is threadedly mounted on the outer wall of the steel sand cylinder 5 and is located between the partitions 7. When the bolt is used as the blocking and sand discharge mechanism 9, when the frame is dropped, the bolt corresponding to the height of the sand layer is pulled out, the steel sand 8 is taken out, and the height of the steel sand cylinder 5 is lowered to achieve the drop.

[0026] In one embodiment, please refer to the appendix of the specification. Figure 2-3 As shown, scale lines 12 are provided on both sides of the plug 6, and triangular support side plates 13 are fixedly installed at both ends of the sliding track 11. The scale lines 12 can display the falling distance of the plug 6 in real time, and the triangular support side plates 13 limit the unloading device 3 from both sides to prevent it from slipping.

[0027] In one embodiment, please refer to the appendix of the specification. Figure 2 、 Figure 3 and Figure 5As shown, the spacing between adjacent partitions 7 is different, and the spacing between adjacent partitions 7 gradually increases from top to bottom. Due to the different spacing between the partitions 7, the thickness of the steel grit 8 varies. As needed, the bolts corresponding to the height of the sand layer can be pulled out to remove the steel grit 8 and lower the height of the steel grit cylinder 5.

[0028] In one embodiment, please refer to the appendix of the specification. Figure 3-4 As shown, the sealing and sand discharge mechanism 9 includes four sand outlets 14 opened on both sides of the outer wall of the steel sand cylinder 5, and a sealing support plate 15 is installed on both sides of the outer wall of the steel sand cylinder 5. One end of the sealing support plate 15 is provided with four groups of external outlets 16 connected to the sand outlet 14, and the sealing support plate 15 is provided with an inclined sand guide groove 17 connected to the external outlet 16. A sealing block 18 extending into the sand outlet 14 is provided in the external outlet 16, and the sealing block 18 is connected to a pull rod 19 extending to the outside of the external outlet 16 at one end away from the sand outlet 14. A baffle 20 is installed on the pull rod 19, and a connecting plate 21 is fixedly provided on the upper and lower sides of one end of the sealing support plate 15. The connecting plate 21 is mounted on the outer wall of the steel sand cylinder 5 through a threaded hole 22 and a fixing bolt. When sand is discharged, the sealing block 18 in the corresponding external outlet 16 is pulled out by the pulling rod 19, and the steel sand 8 is taken out from the sand outlet 14, enters the inclined sand guide groove 17 through the external outlet 16 and is discharged to avoid the problem of steel sand blockage. When the set baffle 20 conflicts with the sealing support plate 15, it means that the sand outlet 14 is blocked. The connecting plate 21 cooperates with the threaded hole 22 and the fixing bolt to facilitate the installation of the sealing support plate 15 on the outer wall of the steel sand cylinder 5.

[0029] In actual application, the concrete pile head 2 is hoisted and fixed on the steel pipe column 1, the unloading device 3 is installed on the concrete pile head 2, and the steel box beam 4 is placed on the unloading device 3. Before installing the unloading device 3, the MGE plate 10 is first installed at the bottom of the steel sand cylinder 5, and the steel sand cylinder 5 is filled with steel sand 8 on the ground. After reaching the required thickness, each layer of steel sand 8 is separated by a partition 7, and then the barrel plug 6 is placed in the steel sand cylinder 5. The sliding track 11 is fixed on the top surface of the concrete pile head 2. After the unloading device 3 is hoisted, the MGE plate 10 is set on the sliding track 11 and is placed between the steel sand cylinder 5 and the MGE Apply interface grease between the plates 10 to reduce friction. When the frame is dropped, pull out the bolts of the sand layer of corresponding height according to the instructions, take out the steel sand 8 and lower the height of the steel sand cylinder 5 to achieve drop. The interior of the steel sand cylinder 5 of the utility model is filled with steel sand 8. The allowable pressure bearing capacity of the steel sand 8 is relatively strong, which reduces the volume of the steel sand cylinder 5 while improving the bearing capacity. The steel sand 8 is separated by the partition 7 and placed in layers at different heights. When the frame is dropped, release the steel sand 8 of the corresponding height according to the instructions, which can reduce the longitudinal force caused by the temperature deformation of the steel box beam 4: use the sliding track 11 to cooperate with the MGE plate 10, reduce the friction by applying yellow head, and release the longitudinal force caused by the deformation of the beam body.

[0030] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A slidable multi-box graded drop frame control device, characterized in that: The invention comprises two steel pipe columns (1), the tops of the steel pipe columns (1) are both equipped with concrete pile heads (2), the tops of the concrete pile heads (2) are equipped with unloading devices (3), the tops of the unloading devices (3) are provided with steel box beams (4), the unloading devices (3) include a steel sand barrel (5), a barrel plug (6) is provided inside the steel sand barrel (5), several layers of partitions (7) are provided below the barrel plug (6) in the steel sand barrel (5), and steel sand (8) is filled between adjacent partitions (7), sealing and sand discharge mechanisms (9) are installed between the partitions (7) on both sides of the steel sand barrel (5), an MGE plate (10) is installed at the bottom of the steel sand barrel (5), a sliding track (11) is installed on the top surface of the concrete pile heads (2), and the MGE plate (10) is slidably provided on the sliding track (11).

2. A slidable multi-box graded drop frame control device according to claim 1, characterized in that: The sealing and sand discharge mechanism (9) is a bolt, the bolt thread is mounted on the outer wall of the steel sand cylinder (5), and the bolt is located between the partitions (7).

3. A slidable multi-box graded drop frame control device according to claim 2, characterized in that: Scale lines (12) are provided on both sides of the barrel plug (6), and triangular supporting side plates (13) are fixedly mounted on both ends of the sliding track (11).

4. A slidable multi-box graded drop frame control device according to claim 3, characterized in that: The spacing between adjacent partitions (7) is different, and the spacing between adjacent partitions (7) gradually increases from small to large.

5. The slidable multi-box graded drop frame control device according to claim 4, characterized in that: The blocking and sand discharge mechanism (9) comprises four sand outlets (14) provided on both sides of the outer wall of the steel sand cylinder (5), a blocking support plate (15) being installed on both sides of the outer wall of the steel sand cylinder (5), four groups of external outlets (16) communicating with the sand outlets (14) being provided at one end of the blocking support plate (15), an inclined sand guide groove (17) communicating with the external outlets (16) being provided in the blocking support plate (15), and a blocking block (18) extending into the sand outlet (14) being provided in the external outlet (16).

6. The slidable multi-box graded drop frame control device according to claim 5, characterized in that: The end of the blocking block (18) away from the sand outlet (14) is connected to a pull rod (19) extending to the outside of the external outlet (16), and a blocking piece (20) is installed on the pull rod (19). Connecting plates (21) are fixedly provided on the upper and lower sides of one end of the blocking support plate (15), and the connecting plate (21) is mounted on the outer wall of the steel sand cylinder (5) through threaded holes (22) and fixed bolts.

Images