Pier body template for construction of main pier of extra-large bridge

Abstract

The utility model relates to a pier body formwork for construction of a main pier of an extra-large bridge. The problems that a pier formwork is troublesome to erect and disassemble, limited in strength and complex in structure are effectively solved. According to the technical scheme, the plate-chain-shaped structure comprises a first plate block, a second plate block, a third plate block and a fourth plate block, the four plate blocks are sequentially connected end to end to form a plate-chain-shaped structure, and the upper portion of the left side of the first plate block and the upper portion of the right side of the fourth plate block are each fixedly provided with an upper hinge lug; the lower portion of the left side of the first plate and the lower portion of the right side of the fourth plate are each fixedly provided with a lower hinge lug, an upper pin is fixed to the upper end of the telescopic rod, and a lower pin is fixed to the lower end of the telescopic rod. A vertical hole is formed in each corner of each plate, and when the H-shaped rods are inserted into the vertical holes of two adjacent plates, the two plates are perpendicular to each other; the connecting structure is simple to support and disassemble, can realize quick disassembly, and has the advantages of simple structure, reliable connection and high connecting strength.

Description

Technical Field

[0001] The utility model relates to the field of bridge construction, in particular to a pier body template used for the construction of a main pier of an extra-large bridge. Background Art

[0002] The pier formwork used in the construction of the main piers of super-large bridges is a special construction tool, usually made of steel structure or wood and fixed with steel nails. The workload of support and disassembly is large and the efficiency is low.

[0003] The utility model patent with application number: CN202322130027.X forms a rectangular frame template structure by two vertical plates and two horizontal plates, and clamps and connects the horizontal plates and the vertical plates through elastic clamping blocks, and then drives the clamping blocks to exit the clamping slots through rotating rods and cams to release the connection. Compared with steel nail fixation, it improves the support and disassembly speed of the template. However, the patent only limits the connection between the vertical plates and the horizontal plates in the direction perpendicular to the horizontal plates, and does not limit the direction parallel to the horizontal plates. There is no mention of any limiting structure between the two vertical plates, that is, the two vertical plates can move back to back and cause the template to collapse, that is, the patent does not completely limit the template, and there is a design defect; moreover, the limiting structure of the patent adopts an elastic clamping block structure, and its strength and reliability are limited, and the problem of the clamping block slipping or getting stuck is prone to occur. This is also the reason why the clamping block is not often used for the connection of high-load-bearing components, and the clamping block is driven by a cam structure, which increases the transmission chain and multiple kinematic pairs, making the structure too complicated. Summary of the invention

[0004] The utility model provides a pier body template for the construction of the main pier of a super-large bridge, aiming to solve the problems of troublesome support and disassembly of the pier template, limited strength and complex structure.

[0005] The technical solution includes a rectangular frame-shaped plate segment unit, and several plate segment units are vertically stacked to form a pier body casting formwork system. The plate segment unit includes a first plate, a second plate, a third plate and a fourth plate. The four plates are all rectangular flat plates. The four plates are connected end to end in sequence to form a plate chain structure, and adjacent plates are hinged via a hinge axis. An upper hinge ear is fixed to the upper left side of the first plate and the upper right side of the fourth plate, and a lower hinge ear is fixed to the lower left side of the first plate and the lower right side of the fourth plate. It also includes a telescopic rod, an upper pin matched with the upper hinge ear is fixed to the upper end of the telescopic rod, and a lower pin matched with the lower hinge ear is fixed to the lower end of the telescopic rod; a horizontal plate perpendicular to the plate surface is fixed at each corner of the outer side surface of each plate, and a vertical hole is opened on the horizontal plate. It also includes a plurality of H-shaped rods consisting of two vertical rods and a horizontal rod. When the two vertical rods of the H-shaped rod are respectively inserted into the vertical holes at the adjacent corners of the two plates, the two plates are perpendicular to each other.

[0006] The telescopic rod comprises an internal thread rod and an external thread internal rod, and the internal thread rod and the external thread rod are screwed together.

[0007] A transverse hole is provided on the outer wall of the inner thread rod and the outer wall of the outer thread rod.

[0008] A detachable embedded block is arranged on the inner side of each of the plates, and the shape formed by the inner walls of the four embedded blocks when surrounded is consistent with the cross section of the bridge pier.

[0009] The utility model is simple to set up and disassemble, can realize quick disassembly, and has the advantages of simple structure, reliable connection and high connection strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional diagram of the utility model.

[0011] Figure 2 It is a three-dimensional diagram of the plate segment unit.

[0012] Figure 3 It is the top view of the plate segment unit.

[0013] Figure 4 It is a three-dimensional diagram of the plate chain structure.

[0014] Figure 5 It is a three-dimensional diagram of the telescopic rod.

[0015] Figure 6 for Figure 1 Enlarged view of position A in the middle. DETAILED DESCRIPTION

[0016] In conjunction with the accompanying drawings, the utility model includes a rectangular frame-shaped plate segment unit, and a plurality of plate segment units are vertically stacked to form a pier body casting formwork system. The plate segment unit includes a first plate 1, a second plate 2, a third plate 3 and a fourth plate 4. The four plates are all rectangular flat plates. The four plates are sequentially connected end to end to form a plate chain structure, and adjacent plates are hinged via a hinge shaft 5. The left side of the first plate 1 is the head of the plate chain structure, and the right side of the fourth plate 4 is the tail of the plate chain structure. An upper hinge ear 6 is fixed to the upper left side of the first plate 1 and the upper right side of the fourth plate 4. The lower left side of the first plate 1 and the lower right side of the fourth plate 4 are fixed to the upper left side of the fourth plate 4. A lower hinged ear 7 is fixed to the lower right side of each block 4, and also includes a telescopic rod 8, an upper pin 9 matched with the upper hinged ear 6 is fixed to the upper end of the telescopic rod 8, and a lower pin 10 matched with the lower hinged ear 7 is fixed to the lower end of the telescopic rod 8. When the left side of the first plate 1 and the right side of the fourth plate 4 are connected, the plate chain structure is closed, and the two upper hinged ears 6 overlap, and the two lower hinged ears 7 overlap. At this time, the telescopic rod 8 is placed between the upper hinged ear 6 and the lower hinged ear 7, and the telescopic rod 8 is extended, the upper pin 9 is inserted into the two upper hinged ears 6, and the lower pin 10 is inserted into the two lower hinged ears 7, so as to complete the head-to-tail connection of the plate chain structure;

[0017] A horizontal plate 11 perpendicular to the plate surface is fixed at each corner of the outer side surface of each plate. The horizontal plate 11 is provided with vertical holes 12 and also includes a plurality of H-shaped rods 13 consisting of two vertical rods and one horizontal rod. When the two vertical rods of the H-shaped rod 13 are respectively inserted into the vertical holes 12 at the adjacent corners of the two plates, the two plates are perpendicular to each other. At the same time, the upper and lower ends of the vertical rods of the H-shaped rod 13 are respectively inserted into the vertical holes 12 of the upper and lower plate segment units to complete the docking of the two plate segment units.

[0018] The telescopic rod 8 comprises an internally threaded rod 14 and an externally threaded internal rod. The internally threaded rod 14 and the externally threaded rod 15 are screwed together, and the length of the telescopic rod 8 is adjusted by the threads.

[0019] A transverse hole 16 is provided on the outer wall of the internal threaded rod 14 and the outer wall of the external threaded rod 15 for inserting a pry bar to rotate the threaded rod.

[0020] A detachable embedded block 17 is provided on the inner side of each of the plates. When surrounded, the inner walls of the four embedded blocks 17 have a shape consistent with the cross section of the pier, and are used to cast piers with a cross-sectional shape or size different from that of the plate segment unit.

[0021] When the utility model is in use, the plate chain structure composed of four plates is butted end to end so that the two upper hinged ears 6 overlap and the two lower hinged ears 7 overlap, then the telescopic rod 8 is placed between the upper hinged ear 6 and the lower hinged ear 7, and the telescopic rod 8 is extended, the upper pin 9 is inserted into the two upper hinged ears 6, and the lower pin 10 is inserted into the two lower hinged ears 7, so that the end to end connection of the plate chain structure is completed; then the angle between adjacent plates is adjusted to vertical, and then the H-shaped rod 13 is inserted into the vertical hole 12 of the adjacent plates to fix the angle of the plates, and one plate segment unit is supported; when the plate segment unit is connected upward, the vertical hole 12 on the upper plate segment unit is correspondingly inserted into the H-shaped rod 13 below.

[0022] If the shape of the cast bridge pier is not rectangular or is rectangular but the size is different from the size of the plate segment unit, the corresponding embedded block 17 is installed in the plate segment unit after the support is completed, and the inner wall of the embedded block 17 is consistent with the cross section and size of the bridge pier.

[0023] When the formwork needs to be removed, the internal threaded rod 14 and the external threaded rod 15 are rotated to shorten them, so that the upper pin 9 and the small pin are withdrawn from the upper hinged ear 6 and the lower hinged ear 7 respectively, and then the H-shaped rod 13 is pulled out, and the four plates can be unfolded and removed from the pier.

[0024] When the template of the utility model is erected and disassembled, it only needs to plug and pull out the telescopic rod 8 and the H-shaped rod 13, which is easy to operate and can achieve the purpose of rapid disassembly.

[0025] The utility model can realize complete positioning of the template through the hinged connection between the H-shaped rod 13 and the plate. Moreover, the structure of the utility model does not adopt any elastic parts and transmission structure, and has the advantages of simple structure, reliable connection and high connection strength.

Claims

1. A pier body formwork for the construction of a main pier of a super-large bridge, comprising a rectangular frame-shaped plate segment unit, wherein a plurality of plate segment units are vertically stacked to form a pier body casting formwork system, characterized in that: The plate segment unit comprises a first plate (1), a second plate (2), a third plate (3) and a fourth plate (4), the four plates are all rectangular flat plates, the four plates are connected end to end in sequence to form a plate chain structure, and adjacent plates are hinged via a hinge shaft (5), an upper hinge ear (6) is fixed to the upper left side of the first plate (1) and the upper right side of the fourth plate (4), a lower hinge ear (7) is fixed to the lower left side of the first plate (1) and the lower right side of the fourth plate (4), and a telescopic rod (8) is further included. An upper pin (9) matched with the upper hinged ear (6) is fixed to the upper end of the retractable rod (8), and a lower pin (10) matched with the lower hinged ear (7) is fixed to the lower end of the telescopic rod (8); a horizontal plate (11) perpendicular to the plate surface is fixed at each corner of the outer side surface of each plate, and a vertical hole (12) is opened on the horizontal plate (11), and a plurality of H-shaped rods (13) composed of two vertical rods and one horizontal rod are included. When the two vertical rods of the H-shaped rod (13) are respectively inserted into the vertical holes (12) at the adjacent corners of the two plates, the two plates are perpendicular to each other.

2. The pier body formwork for the construction of the main pier of a super-large bridge according to claim 1 is characterized in that: The telescopic rod (8) comprises an internally threaded rod (14) and an externally threaded internal rod, and the internally threaded rod (14) and the externally threaded rod (15) are screwed together.

3. The pier body formwork for the construction of the main pier of a super-large bridge according to claim 2 is characterized in that: A transverse hole (16) is formed on the outer wall of the internally threaded rod (14) and the outer wall of the externally threaded rod (15).

4. The pier body formwork for the construction of the main pier of a super-large bridge according to claim 1 is characterized in that: A detachable inner block (17) is provided on the inner side of each of the plates, and the shape formed by the inner walls of the four inner blocks (17) when surrounded is consistent with the cross section of the bridge pier.

Images