Adjustable combined wooden formwork for cast-in-place box girder

Abstract

The utility model relates to an adjustable combined wooden formwork for a cast-in-place box girder, which effectively solves the problems that the building and dismantling efficiency of a box girder formwork is low, and a formwork joint is not tight. According to the technical scheme, the device comprises a plurality of mold boxes, and the mold boxes can be connected end to end to form a template system with a certain length; the front end of each mold box is provided with a communicating groove in the longitudinal direction of the mold box, a telescopic assembly is fixedly installed in the communicating groove, a telescopic jacking column is fixedly installed at the top of the telescopic assembly, an inner jacking groove is formed in the communicating groove, the top of each mold box is provided with an outer jacking groove, and the bottom of each outer jacking groove communicates with the inner end of the corresponding inner jacking groove. An outer ejector rod is fixedly mounted at the rear end of each mold box, and when the mold boxes are connected end to end, the outer ejector rod at the rear end of the previous mold box can be correspondingly inserted into the communicating groove in the front end of the next mold box; a supporting assembly is arranged at the bottom of the mold box. The construction efficiency is high during building and dismantling, the formwork turnover rate is high, and it can be ensured that the two sets of formwork boxes are tightly connected without connecting gaps.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge cast-in-place box girder field, concretely is a cast-in-place box girder adjustable combination wood formwork. BACKGROUND

[0002] In bridge engineering construction, bridge formwork is a very important engineering material, and the cast-in-place box girder is one of bridge engineering, which is hollow inside, has flange plates on both sides of the upper part, and is similar to a box, and thus is named.

[0003] The current formwork building mode of the support needs a large amount of time for building and removing the formwork, and the efficiency is too low.

[0004] The utility model patent with the application number CN202221860935.3 discloses a cast-in-place box girder adjustable combination wood formwork, which provides a segmented formwork system, the formwork is prefabricated into segments, and the formwork segments are directly connected at the head and tail during construction to form a formwork system. Compared with the traditional on-site formwork, the patent greatly improves the formwork building efficiency; however, the patent is prone to the problem of loose joints between the segments during construction, which affects the appearance quality of the cast-in-place box girder. SUMMARY

[0005] The utility model provides a cast-in-place box girder adjustable combination wood formwork, which aims to solve the problems of low formwork building and removal efficiency and loose formwork joints.

[0006] The technical solution thereof comprises a plurality of form boxes, the plurality of form boxes can be connected at the head and tail to form a formwork system with a certain length, a communication groove along the longitudinal direction of each form box is formed at the front end, an extension assembly is fixedly installed in the communication groove, an extension top column is fixedly installed at the top of the extension assembly, an inner top groove is formed in the communication groove, an outer top groove is formed at the top of each form box, the bottom of the outer top groove is in communication with the inner end of the inner top groove, an outer top rod is fixedly installed at the rear end of each form box, and the outer top rod at the rear end of a previous form box can be inserted into the communication groove at the front end of a subsequent form box when the form boxes are connected at the head and tail.

[0007] The communication groove and the extension assembly on each form box are arranged side by side in a plurality of numbers, the extension assembly comprises a fixed rod and an end rod, the fixed rod and the end rod are connected through a spring, and the extension top column is fixed to the top of the end rod.

[0008] The extension top column comprises an extension spring and an outer top column, the lower end of the extension spring is fixed on the extension assembly, the outer top column is fixedly installed at the upper end of the extension spring, and the outer diameter of the outer top column is the same as the inner diameter of the outer top groove.

[0009] The form box comprises two side formworks and one top formwork, the communication groove is located at the front end of the top formwork, and the outer top rod is located at the rear end of the top formwork.

[0010] The front end of the side template is longitudinally provided with a side groove, the top surface and the bottom surface of the side groove are fixedly provided with a connecting spring, the two connecting springs are symmetrical, the free end of each connecting spring is fixedly provided with a connecting block, and the rear end of each side template is fixedly provided with a side top block.

[0011] The support assembly comprises a cross support frame, a plurality of inclined support hydraulic cylinders are fixedly installed on the top of the cross support frame, a hydraulic rod is arranged on the output end of the hydraulic cylinder, and an auxiliary support plate is fixedly installed on the top of the hydraulic rod.

[0012] The top of the cross support frame is fixedly provided with a vertical support column, and the top of the support column is fixedly provided with a support sleeve, wherein the hydraulic rod penetrates through the support sleeve.

[0013] The construction efficiency is high during erection and dismantling, and the formwork turnover rate is high; through cooperation of the telescopic top column and the outer top groove, the position of the telescopic top column can be observed externally, so that the two groups of mold boxes are tightly connected and have no connection gap, through arrangement of the strong connecting spring in the side groove and cooperation of the extruded side top block, the side surfaces of the bottom parts are clamped to each other, the connecting strength between them is enhanced, and the connection gap is prevented from affecting the pouring effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of the mold box of the utility model.

[0015] Figure 2 It is a structure schematic view of the mold box of the utility model.

[0016] Figure 3 It is a structure schematic view of the mold box of the utility model.

[0017] Figure 4 It is a structure schematic view of the mold box of the utility model. Figure 3 It is an enlarged view of A in the middle.

[0018] Figure 5 It is a sectional view of the communication groove position of the utility model.

[0019] Figure 6 It is a structure schematic view of the telescopic assembly and the telescopic top column of the utility model. DETAILED DESCRIPTION

[0020] Referring to the accompanying drawings, this utility model includes multiple mold boxes 1, which can be connected end to end to form a template system with a certain length; each mold box 1 has a connecting groove 4 along the longitudinal direction of the mold box 1 at its front end, and a telescopic component 5 is fixedly installed inside the connecting groove 4. A telescopic top column 6 is fixedly installed on the top of the telescopic component 5. An inner top groove 7 is opened inside the connecting groove 4. Each mold box 1 has an outer top groove 8 on its top, and the bottom of the outer top groove 8 is connected to the inner end of the inner top groove 7. An outer top rod 9 is fixedly installed at the rear end of each mold box 1. When the mold boxes 1 are connected end to end, the outer top rod 9 at the rear end of the previous mold box 1 can be inserted into the connecting groove 4 at the front end of the next mold box 1; a support component 10 is provided at the bottom of the mold box 1.

[0021] During installation and use, multiple mold box segments 1 are arranged longitudinally on the inner side of the top of the support assembly 10, and the rear mold box 1 is pushed forward so that its front end gradually approaches the front mold box 1. This causes the outer push rod 9 at the rear end of the front mold box 1 to insert into the interior of the connecting groove 4 at the front end of the rear mold box 1. The outer push rod 9 pushes the telescopic assembly 5 to move towards the inner end of the connecting groove 4, and drives the telescopic top column 6 to move towards the inner end along the inner top groove 7. Since the outer top groove 8 is connected to the inner top groove 7, when the telescopic top column 6 is displaced to be aligned with the outer top groove 8, the telescopic top column 6 pops out into the outer top groove 8. At this time, the outer push rod 9 is fully inserted into the connecting groove 4, and the telescopic top column 6 is restricted in the outer top groove 8. At this time, the two mold box segments 1 are connected. According to this method, different numbers of mold boxes 1 can be connected to form a box girder template of the required length as needed.

[0022] After the telescopic top column 6 is pushed out from the outer top groove 8, the position of the telescopic top column 6 can be observed from the outside to ensure that the two sets of mold boxes 1 are tightly connected without any gaps, so as to prevent gaps from affecting the appearance quality of the cast-in-place box girder of the bridge.

[0023] In one embodiment, several connecting slots 4 and telescopic components 5 are arranged side by side on each section of the mold box 1. The telescopic component 5 includes a fixed rod 501 and an end rod 503. The fixed rod 501 and the end rod 503 are connected by a spring 502. The telescopic top column 6 is fixed to the top of the end rod 503.

[0024] The fixed rod 501 is located at the inner end of the connecting groove 4. When the outer ejector rod 9 pushes the end rod 503 to compress the spring 502, the end rod 503 moves towards the inner end of the connecting groove 4, and at the same time drives the telescopic ejector 6 to move towards the inner end of the inner ejector groove 7 and approach the outer ejector groove 8, until the outer ejector rod 9 is fully inserted into the connecting groove 4, and the telescopic ejector 6 pops out into the outer ejector groove 8, so that the end faces of the two mold boxes 1 fit together.

[0025] The spring 502 is connected between the end rod 503 and the fixed rod 501, so that when the outer top rod 9 pushes the end rod 503, the spring 502 with elasticity is matched to quickly drive the telescopic top column 6 to move towards the outer top groove 8, thereby improving the connection and installation efficiency between the mold boxes 1, and when disassembly is needed, the telescopic top column 6 can be shrunk downwards to be separated from the outer top groove 8 by pressing downwards at the top, and the mold boxes 1 can be disassembled by dragging, and the spring 502 drives the telescopic top column 6 to reset to the original position.

[0026] In one embodiment, the telescopic top column 6 includes a telescopic spring 601 and an outer top column 602, the lower end of the telescopic spring 601 is fixed on the telescopic assembly 5, and the outer top column 602 is fixedly installed on the upper end of the telescopic spring 601, and the outer diameter of the outer top column 602 is the same as the inner diameter of the outer top groove 8.

[0027] The telescopic spring 601 enables the top of the inner top groove 7 to have a squeezing limiting effect on the outer top column 602, when the outer top rod 9 pushes the telescopic assembly 5 to displace, the outer top column 602 displaces along the inner top groove 7, until it is separated from the inner top groove 7 and pops into the outer top groove 8, at the same time, the outer top rod 9 is completely inserted into the communication groove 4, and the end faces of the two groups of mold boxes 1 are in close contact, thereby achieving the effect of quickly connecting multiple groups of mold boxes 1.

[0028] In one embodiment, the mold box 1 includes two side mold plates 101 and one top mold plate 102, the communication groove 4 is located at the front end of the top mold plate 102, and the outer top rod 9 is located at the rear end of the top mold plate 102.

[0029] The communication groove 4 and the outer top rod 9 are located on the same horizontal line of the top mold plate 102, so that the end faces of the front and rear two sections of mold boxes 1 are accurately in close contact, achieving the effect of seamless connection.

[0030] In one embodiment, the front end of the side mold plate 101 is provided with a side groove 11 in the longitudinal direction, the top surface and the bottom surface of the side groove 11 are both fixed with a connecting spring 12, the two connecting springs 12 are symmetrically arranged upward and downward, the free end of each connecting spring 12 is fixedly installed with a connecting block 13, and the rear end of each side mold plate 101 is fixedly installed with a side top block 14.

[0031] When two sections of mold boxes 1 are connected, the side top block 14 at the rear end of the former mold box 1 is gradually inserted into the side groove 11 at the front end of the latter mold box 1, the side top block 14 squeezes the two connecting blocks 13 in the side groove 11, the connecting spring 12 is contracted, and the two connecting blocks 13 clamp the side top block 14, thereby enhancing the connection strength between the mold boxes 1, and preventing the occurrence of connection gaps to affect the pouring effect.

[0032] In one embodiment, the support assembly 10 comprises a cross support frame 1001, the top of which is fixedly installed with a plurality of inclined support hydraulic cylinders 1002, the output end of which is provided with a hydraulic rod 1003, the top of which is fixedly installed with a support plate 1004.

[0033] A plurality of hydraulic cylinders 1002 are respectively located on both sides of the mold box 1, and the hydraulic rod 1003 is driven to extend and retract by starting the plurality of hydraulic cylinders 1002, which pushes the support plate 1004 to approach the outside of the mold box 1 and is pressed thereon, so that the mold box 1 has an auxiliary support force on both sides at the same time, and when disassembling, the support plate 1004 is reversely displaced by the hydraulic rod 1003 to release the support restriction of the mold box 1, facilitating rapid disassembly of the mold box 1.

[0034] In one embodiment, the top of the cross support frame 1001 is fixedly installed with a vertical support column 1005, the top of which is fixedly installed with a support sleeve 1006, and the hydraulic rod 1003 passes through the support sleeve 1006.

[0035] The support column 1005 supports and sleeves the support sleeve 1006 outside the hydraulic rod 1003, and when the hydraulic rod 1003 extends and retracts, it extends and retracts along the support sleeve 1006, so that the support sleeve 1006 has an auxiliary support effect on the hydraulic rod 1003, increasing the stability when pushing and recovering.

[0036] The utility model only needs to push the mold box 1 to complete the erection and disassembly of the formwork when erecting and disassembling, and has high construction efficiency and high formwork turnover rate.

[0037] The communication groove 4 is formed in the end of the mold box 1, the telescopic assembly 5 and the telescopic jacking column 6 are supported inside the communication groove 4, when the whole box girder needs to be installed, the outer jacking rod 9 at the rear end of the former mold box 1 corresponds to the communication groove 4 at the front end of the latter mold box 1 through the pushing mode, through the cooperation of the telescopic jacking column 6 and the outer jacking groove 8, the position of the telescopic jacking column 6 can be observed externally, so that the two groups of mold boxes 1 are tightly connected and have no connection gap, dust is prevented from affecting the appearance quality of the bridge cast-in-place box girder, and a plurality of mold boxes 1 can be flexibly connected through this connection mode, so that the length of the whole mold plate can be adjusted according to the required length of the cast concrete; when the two sections of mold boxes 1 are connected, the strong connecting spring 12 is arranged inside the side groove 11 and cooperates with the extruded side jacking block 14, so that the side surfaces of the bottom of the two are clamped tightly, the connecting strength between them is enhanced, and the connection gap is prevented from affecting the pouring effect.

Claims

1. A cast-in-situ box girder adjustable combined wood formwork, comprising a plurality of form boxes (1), the plurality of form boxes (1) being connectable end to end to form a formwork system with a certain length; characterized in that, The front end of each mold box (1) is provided with a communication groove (4) in the longitudinal direction of the mold box (1), the inside of the communication groove (4) is fixedly provided with an extension assembly (5), the top of the extension assembly (5) is fixedly provided with an extension top column (6), the inside of the communication groove (4) is provided with an inner top groove (7), the top of each mold box (1) is provided with an outer top groove (8), the bottom of the outer top groove (8) is communicated with the inner end of the inner top groove (7), the rear end of each mold box (1) is fixedly provided with an outer top rod (9), when the mold boxes (1) are connected in sequence, the outer top rod (9) at the rear end of the former mold box (1) can be correspondingly inserted into the communication groove (4) at the front end of the latter mold box (1); the bottom of the mold box (1) is provided with a supporting assembly (10).

2. The adjustable composite timber formwork for cast-in-situ box girder according to claim 1, wherein, The communication groove (4) and the extension assembly (5) on each mold box (1) are provided with a plurality of assemblies side by side, the extension assembly (5) comprises a fixed rod (501) and an end rod (503), the fixed rod (501) and the end rod (503) are connected through a spring (502), and the extension top column (6) is fixed to the top of the end rod (503).

3. The adjustable composite timber formwork for cast-in-situ box girder according to claim 1, wherein, The extension top column (6) comprises an extension spring (601) and an outer top column (602), the lower end of the extension spring (601) is fixed on the extension assembly (5), and the outer top column (602) is fixedly installed at the upper end of the extension spring (601); the outer diameter of the outer top column (602) is the same as the inner diameter of the outer top groove (8).

4. The adjustable composite timber formwork for cast-in-situ box girder according to claim 1, wherein, The mold box (1) comprises two side mold plates (101) and a top mold plate (102), the communication groove (4) is located at the front end of the top mold plate (102), and the outer top rod (9) is located at the rear end of the top mold plate (102).

5. The adjustable composite timber formwork for cast-in-situ box girder according to claim 4, wherein, The front end of the side mold plate (101) is provided with a side groove (11) in the longitudinal direction, the top surface and the bottom surface of the side groove (11) are fixedly provided with a connecting spring (12), the two connecting springs (12) are symmetrically arranged upward and downward, the free end of each connecting spring (12) is fixedly provided with a connecting block (13), and the rear end of each side mold plate (101) is fixedly provided with a side top block (14).

6. The adjustable composite timber formwork for cast-in-situ box girder according to claim 1, wherein, The supporting assembly (10) comprises a cross support frame (1001), a plurality of inclined hydraulic cylinders (1002) are fixedly installed on the top of the cross support frame (1001), a hydraulic rod (1003) is arranged at the output end of the hydraulic cylinder (1002), and an auxiliary supporting plate (1004) is fixedly installed on the top of the hydraulic rod (1003).

7. The adjustable composite timber formwork for cast-in-situ box girder according to claim 6, wherein, A vertical supporting column (1005) is fixedly installed on the top of the cross support frame (1001), a supporting sleeve (1006) is fixedly installed on the top of the supporting column (1005), and the hydraulic rod (1003) penetrates through the supporting sleeve (1006).

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