Cantilever formwork supporting structure and erecting method thereof

Abstract

The invention belongs to the technical field of constructional engineering, and relates to a supporting structure, in particular to a cantilever formwork supporting structure and an erecting method thereof. The bottom of the stand column is located on the supporting adjusting structure B; ground auxiliary supporting structures are arranged on the lower portions of the stand columns. A mounting sleeve is fixedly mounted at the top of the stand column, and a plurality of sets of top plate auxiliary supporting structures used for supporting the cantilever formwork are evenly distributed on the periphery of the mounting sleeve. The method provided by the invention is based on the structure, so that the problems of complicated construction, fixed length and limited bearing strength in the prior art are effectively solved; a top plate auxiliary supporting structure is arranged to reinforce supporting and enhance the bearing capacity of the top plate; an auxiliary reinforcing structure is arranged to reinforce the lower end of the stand column, and the situation of toppling caused by poor supporting performance of the stand column in the using process is avoided; the angle between the mounting block and the supporting pad is adjustable, so that different grounds can be conveniently adapted.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction engineering, relates to a support structure, and specifically relates to a cantilever formwork support structure and an erection method thereof. Background Art

[0002] In modern architectural design and construction practices, the high-altitude cantilever technology is widely used due to its unique advantages. There are more and more single-story buildings with very high heights, and the application of steel structures in bridges is also becoming more and more extensive.

[0003] When a concrete cantilever platform needs to be constructed on the top floor of a single-story building, the construction of the cantilever formwork support structure is very complicated. It is not easy to implement the lower support formwork for the side cantilever bridge deck of a steel-concrete composite beam bridge, and the length of the existing cantilever formwork support is fixed. During concrete pouring, due to the limited pressure that the top plate can bear, the formwork is easily damaged due to excessive pressure, and there is an urgent need for optimization and improvement. Summary of the Invention

[0004] Aiming at the above technical problems of the existing cantilever formwork support with complicated construction, fixed length and limited bearing strength; the present invention provides a cantilever formwork support structure, which is provided with a top plate auxiliary support structure to reinforce the support and enhance the bearing capacity of the top plate; an auxiliary reinforcement structure is provided to reinforce the lower end of the column, avoiding the situation of tipping over during use due to poor support of the column; the angle between the installation block and the support seat is adjustable, which is convenient for adapting to different ground surfaces.

[0005] The present invention is implemented by the following technical solutions: In a first aspect, the present invention provides a cantilever formwork support structure, including a column, The bottom of the column is located on the support adjustment structure B; A ground auxiliary support structure is provided at the lower part of the column; An installation sleeve is fixedly installed at the top of the column. A plurality of groups of top plate auxiliary support structures for supporting the cantilever formwork are evenly distributed on the outer circumference of the installation sleeve. A hydraulic cylinder is fixedly installed in the installation sleeve, and an adjusting rod is slidably installed. The adjusting rod is driven by the hydraulic cylinder, and the top of the adjusting rod is hinged with a top plate A for supporting the cantilever formwork.

[0006] Further preferably, a fixed ring seat is built in the middle of the installation sleeve, and the cylinder body of the hydraulic cylinder is installed above the fixed ring seat; a chute is provided along the axial direction on the inner wall of the installation sleeve, and a guiding and limiting block cooperating with the chute is provided at the bottom of the adjusting rod.

[0007] Further preferably, the lower part of the installation sleeve is sleeved on the stepped end at the top of the column and supported by the fixed ring seat; the side wall of the lower part of the installation sleeve is fixed to the stepped end at the top of the column by a set screw.

[0008] Further preferably, the adjusting rod is hinged by passing a rotating rod A through a single ear seat A at the top end of the adjusting rod and a double ear seat A on the back of the top plate A.

[0009] Further preferably, the top plate auxiliary support structure includes an upper support rod, and the upper support rod is hinged by passing a rotating rod B through a double ear seat C at the top end of the upper support rod and a single ear seat C on the back of the top plate B.

[0010] Further preferably, a threaded ear seat B is provided at the bottom end of the upper support rod, and the threaded ear seat B is correspondingly provided with a pair of threaded holes; a connecting seat is correspondingly provided on the side wall of the mounting sleeve, and the connecting seat is correspondingly provided with a threaded hole. The two threaded holes of the threaded ear seat B and the threaded hole of the connecting seat jointly pass through a screw rod to achieve locking and positioning.

[0011] Further preferably, an installation groove A is formed on the top plate A; an installation groove B is formed on the top plate B.

[0012] Further preferably, the ground auxiliary support structure includes a fixed seat sleeved on the lower part of the column and a plurality of lower support rods. The upper end of each lower support rod is hinged to the fixed seat; the lower support rod is hinged by passing a rotating rod C through a single ear seat A at the lower end of the lower support rod and a double ear seat D on the surface of the bottom plate.

[0013] Further preferably, the support adjusting structure B includes a mounting block installed at the bottom end of the column through a fixing groove. A single ear seat D is provided at the bottom of the mounting block, and the single ear seat D is hinged to a double ear support seat through a rotating rod D.

[0014] In a second aspect, the present invention also provides a method for erecting a cantilever formwork, based on the above-mentioned cantilever formwork support structure, including the following steps: S1. Place the cantilever formwork support: After installing the cantilever formwork support structure, place it at a suitable position between the ground and the cantilever formwork. S2. Adjust the adaptability of the column to the ground: According to the ground conditions, adjust the angle between the mounting block and the double ear support seat so that the column remains vertical. S3. Reinforce the lower end of the column: According to the ground conditions, disperse the support of the lower support rods at four angles and adjust the angle between the lower support rods and the bottom plate to achieve auxiliary support for the column. S4. Adjust the height of the column: After the ground part is installed, adjust the height of the cantilever formwork support structure according to the position of the cantilever formwork. Start the hydraulic cylinder in the mounting sleeve to drive the adjusting rod to slide upward for adjustment, so that the top plate A contacts the bottom surface of the cantilever formwork. S5. Roof plate fixing and angle adjustment: After the height is adjusted, fix the roof plate A to the bottom surface of the formwork through the installation groove A to achieve support; pass the screw through the threaded ear seat B and the threaded hole of the connecting seat, and loosen it preliminarily; adjust the position of the roof plate B according to the required angle, and fix the roof plate B one by one through the installation groove B. At this time, tighten the screw again to lock the screw and ensure that the auxiliary support structure of the roof plate is fixed. Fix the roof plate A to the bottom surface of the formwork through the installation groove A to achieve support.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: By setting the auxiliary support structure of the roof plate, the present invention achieves a better fixing effect. During use, first install the roof plate at the bottom end of the formwork through the installation groove, and then start the hydraulic cylinder inside the column to drive the adjusting rod to slide, realizing height adjustment and achieving a better support effect, solving the problem of the fixed length of the existing cantilever formwork support.

[0016] By setting the installation block, fixing groove and support seat, etc., the present invention can adjust the angle to better adapt to different ground surfaces. During use, first install the installation block at the bottom end of the column through the fixing groove, and then adjust the angle according to the ground conditions to make the installation block firmly support the column, preventing the column from toppling due to ground inclination during use.

[0017] By setting the auxiliary reinforcement structure, the present invention better supports the column. During auxiliary support, pull the lower support rod to make the lower support rod support dispersedly at four angles to reinforce the column, avoiding the situation of toppling due to poor support of the column during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a three-dimensional structure schematic diagram of an embodiment of the present invention.

[0020] Figure 2 It is a top exploded structure schematic diagram of an embodiment of the present invention.

[0021] Figure 3 It is the support structure of an embodiment of the present invention Figure 2 The enlarged view at A in the figure.

[0022] Figure 4 It is the support structure of an embodiment of the present invention Figure 2 The enlarged view at B in the figure.

[0023] Figure 5 The support structure of the embodiment of the present invention Figure 2 Cross-sectional view at position C in the middle

[0024] Figure 6 Explosion structure schematic diagram of the column of the embodiment of the present invention

[0025] Figure 7 Explosion structure schematic diagram of the adjusting rod of the embodiment of the present invention

[0026] Figure 8 Explosion schematic diagram of the auxiliary support of the top plate of the embodiment of the present invention

[0027] Figure 9 Explosion structure schematic diagram of the auxiliary reinforcement structure of the support structure of the embodiment of the present invention

[0028] Marks in the drawings and corresponding names of parts 1 - Column; 2 - Installation sleeve; 3 - Fixed ring seat; 4 - Hydraulic cylinder; 5 - Adjusting rod; 6 - Limiting block; 7 - Single ear seat A; 8 - Double ear seat A; 9 - Rotating rod A; 10 - Top plate A; 11 - Installation groove A; 12 - Connecting seat; 13 - Threaded ear seat B; 14 - Screw; 15 - Upper support rod; 16 - Double ear seat C; 17 - Top plate B; 18 - Single ear seat B; 19 - Rotating rod B; 20 - Installation groove B; 21 - Fixed seat; 22 - Rotating rod C; 23 - Lower support rod; 24 - Fixed groove A; 25 - Single ear seat C; 26 - Fixed rod A; 27 - Bottom plate; 28 - Double ear seat D; 29 - Installation block; 30 - Fixed groove; 31 - Single ear seat D; 32 - Rotating rod D; 33 - Double ear support seat Detailed implementation manners

[0029] Many specific details are set forth in the following description in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present invention, rather than all of the embodiments

[0030] The specific embodiments of the present invention will be described in detail below with reference to the drawings Embodiment

[0031] Please refer to Figures 1-9 , in a first aspect, the present invention provides a cantilever formwork support structure, including a column The bottom of the column 1 is located on the support adjustment structure B The lower part of the column 1 is provided with a ground auxiliary support structure At the top of the vertical column 1, an installation sleeve 2 is fixedly installed. A plurality of groups of top plate auxiliary support structures for supporting the cantilever formwork are evenly distributed on the outer periphery of the installation sleeve 2. A hydraulic cylinder 4 is fixedly installed inside the installation sleeve 2, and an adjusting rod 5 is slidably installed. The adjusting rod 5 is driven by the hydraulic cylinder 4. The top of the adjusting rod 5 is hinged with a top plate A10 for supporting the cantilever formwork.

[0032] Please refer to Figures 1-2 , a fixed ring seat 3 is built in the middle of the installation sleeve 2, and the cylinder body of the hydraulic cylinder 4 is installed above the fixed ring seat 3; a chute is provided along the axial direction on the inner wall of the installation sleeve 2, and a guiding and limiting block 6 is provided at the bottom of the adjusting rod 5 and is matched with the chute.

[0033] Please refer to Figure 2 and Figure 5 , the lower part of the installation sleeve 2 is sleeved on the top step end of the vertical column 1 and is supported by the fixed ring seat 3; the side wall of the lower part of the installation sleeve 2 is fixed to the top step end of the vertical column 1 through a set screw.

[0034] Furthermore, the adjusting rod 5 is hinged by passing a rotating rod A9 through a single-ear seat A7 at its top end and a double-ear seat A8 on the back of the top plate A10.

[0035] Please refer to Figures 1-3 and Figure 8 , the top plate auxiliary support structure includes an upper support rod 15, and the upper support rod 15 is hinged by passing a rotating rod B19 through a double-ear seat C16 at its top end and a single-ear seat C18 on the back of the top plate B17.

[0036] Please refer to Figures 2-3 , a threaded ear seat B13 is provided at the bottom end of the upper support rod 15, and a pair of threaded holes are correspondingly provided on the threaded ear seat B13; a connecting seat 12 is correspondingly provided on the side wall of the installation sleeve 2, and a threaded hole is correspondingly provided on the connecting seat 12. The two threaded holes of the threaded ear seat B13 and the threaded hole of the connecting seat 12 are jointly penetrated by a screw rod 14 to achieve locking and positioning.

[0037] Please refer to Figures 1-2 , an installation groove A11 is provided on the top plate A10; an installation groove B20 is provided on the top plate B17.

[0038] During the use process, first install the top plate A10 and the top plate B17 at the bottom end of the formwork through the installation groove A11 and the installation groove B20, and then start the hydraulic cylinder 4 to drive the adjusting rod 5 to slide to achieve the purpose of adjusting the height. The present invention effectively solves the problem that the length of the existing cantilever formwork support is fixed and cannot be adjusted; effectively avoids the situation that the formwork is damaged due to excessive pressure when the top plate has limited bearing capacity during concrete pouring.

[0039] Please refer to Figures 1-2 and Figure 9, the ground auxiliary support structure includes a fixed seat 21 sleeved on the lower part of the column 1 and multiple lower support rods 23. The upper end of each lower support rod 23 is hinged to the fixed seat 21; the lower support rod 23 is hinged through a rotating rod C22 passing through a single-ear seat A25 at its lower end and a double-ear seat D28 on the surface of the bottom plate 27.

[0040] Further, the lower support rods 23 are evenly distributed at the four inner corners of the fixed seat 21, and the lower support rods 23 can rotate on the upper surface of the fixed seat 21.

[0041] When auxiliary support is needed, first hold the lower support rod 23 and pull it backward, adjust the position of the lower support rod 23 according to the ground conditions, so that the lower support rods 23 are dispersed and supported at four angles, and adjust the angle between the lower support rod 23 and the bottom plate 27 to prevent the column 1 from tipping over due to poor support.

[0042] Please refer to Figures 1-2 and Figures 5-6 , the support adjustment structure B includes a mounting block 29 installed at the bottom end of the column 1 through a fixing groove 30. A single-ear seat D31 is provided at the bottom of the mounting block 29, and the single-ear seat D31 is hinged to a double-ear support seat 33 through a rotating rod D32.

[0043] During use, first install the mounting block 29 at the bottom end of the column 1 through the fixing groove 30, and adjust the angle between the mounting block 29 and the double-ear support seat 33 according to the ground conditions, so that the mounting block 29 firmly supports the column 1. It can adapt to different grounds and effectively prevent the column 1 from tipping over due to ground inclination. Embodiment

[0044] Please refer to Figures 1-8 , this embodiment provides a method for erecting a cantilever formwork, based on the cantilever formwork support structure and its working principle described in Embodiment 1, including the following steps: S1. Place the cantilever formwork support: After installing the cantilever formwork support structure, place it at a suitable position between the ground and the cantilever formwork; S2. Adjust the adaptability of the column to the ground: According to the ground conditions, adjust the angle between the mounting block 29 and the double-ear support seat 33 so that the column remains vertical; S3. Reinforce the lower end of the column: According to the ground conditions, disperse and support the lower support rods 23 at four angles, and adjust the angle between the lower support rods 23 and the bottom plate 27 to achieve auxiliary support for the column; S4. Adjust the height of the column: After the ground part is installed, adjust the height of the cantilever formwork support structure according to the position of the cantilever formwork. Start the hydraulic cylinder 4 in the installation sleeve 2 to drive the adjusting rod 5 to slide upward for adjustment, so that the top plate A contacts the bottom surface of the cantilever formwork; S5. Roof plate fixing and angle adjustment: After the height is adjusted, the roof plate A10 is fixed to the bottom surface of the formwork through the installation groove A11 to achieve support; the screw rod 14 is passed through the threaded ear seat B13 and the threaded hole of the connecting seat 12, and initially loosened; the position of the roof plate B17 is adjusted according to the required angle, and the roof plate B17 is fixed one by one through the installation groove B20. At this time, the screw rod 14 is screwed again to lock it, ensuring the fixation of the roof plate auxiliary support structure, and the roof plate A10 is fixed to the bottom surface of the formwork through the installation groove A11 to achieve support.

[0045] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Although the above embodiments have been described in detail, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the above embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the above embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A cantilever formwork support structure, characterized in that: Including column (1), The bottom of the column (1) is located on the support adjustment structure B; The lower part of the column (1) is provided with a ground auxiliary support structure; A mounting sleeve (2) is fixedly mounted on the top of the column (1); a plurality of groups of top plate auxiliary support structures for supporting the cantilever formwork are evenly distributed on the outer periphery of the mounting sleeve (2); a hydraulic cylinder (4) is fixedly mounted inside the mounting sleeve (2) and an adjusting rod (5) is slidably mounted thereon; the adjusting rod (5) is driven by the hydraulic cylinder (4); and a top plate A (10) for supporting the cantilever formwork is hingedly connected to the top of the adjusting rod (5).

2. A cantilever formwork support structure according to claim 1, characterized in that: A fixed ring seat (3) is built into the middle of the mounting sleeve (2), and the cylinder body of the hydraulic cylinder (4) is mounted above the fixed ring seat (3); a slide groove is axially provided on the inner wall of the mounting sleeve (2), and a guide limit block (6) cooperating with the slide groove is provided at the bottom of the adjusting rod (5).

3. The cantilever formwork support structure according to claim 1, characterized in that: The lower part of the installation sleeve (2) is sleeved on the top step end of the column (1) and supported by a fixed ring seat (3); the lower side wall of the installation sleeve (2) is fixed to the top step end of the column (1) by means of set screws.

4. The cantilever formwork support structure according to claim 1, characterized in that: The adjusting rod (5) is hingedly connected by a rotating rod A (9) passing through a single ear seat A (7) at the top end of the adjusting rod (5) and a double ear seat A (8) at the back of the top plate A (10).

5. The cantilever formwork support structure according to claim 1 is characterized in that: The top plate auxiliary support structure comprises an upper support rod (15), wherein the upper support rod (15) is hingedly connected via a rotating rod B (19) passing through a double-ear seat C (16) at the top end thereof and a single-ear seat C (18) at the back of a top plate B (17).

6. The cantilever formwork support structure according to claim 1, characterized in that: The bottom end of the upper support rod (15) is provided with a threaded ear seat B (13), and the threaded ear seat B (13) is correspondingly provided with a pair of threaded holes; the side wall of the mounting sleeve (2) is correspondingly provided with a connecting seat (12), and the connecting seat (12) is correspondingly provided with a threaded hole, and the two threaded holes of the threaded ear seat B (13) and the threaded hole of the connecting seat (12) are jointly penetrated by a screw rod (14) to achieve locking and positioning.

7. The cantilever formwork support structure according to claim 1, characterized in that: The top plate A (10) is provided with a mounting groove A (11); the top plate B (17) is provided with a mounting groove B (20).

8. The cantilever formwork support structure according to claim 1, characterized in that: The ground auxiliary support structure comprises a fixed seat (21) mounted on the lower part of the column (1) and a plurality of lower support rods (23), wherein the upper end of each lower support rod (23) is hinged to the fixed seat (21); the lower support rod (23) is hinged by a rotating rod C (22) passing through a single ear seat A (25) at the lower end thereof and a double ear seat D (28) on the surface of the bottom plate (27).

9. The cantilever formwork support structure according to claim 1, characterized in that: The support adjustment structure B comprises a mounting block (29) mounted at the bottom end of the column (1) via a fixing groove (30); a single-ear seat D (31) is provided at the bottom of the mounting block (29); the single-ear seat D (31) is hingedly connected to a double-ear support seat (33) via a rotating rod D (32).

10. A cantilever formwork erection method, characterized in that: The cantilever formwork support structure according to any one of claims 1 to 9 comprises the following steps: S1. Place the cantilever formwork support: After installing the cantilever formwork support structure, place it at a suitable position between the ground and the cantilever formwork; S2. Column ground adaptability adjustment: According to the ground conditions, adjust the angle between the mounting block (29) and the double-ear support seat (33) so that the column remains vertical; S3. Reinforcement of the lower end of the column: According to the ground conditions, the lower support rod (23) is dispersedly supported at four angles, and the angle between the lower support rod (23) and the bottom plate (27) is adjusted to achieve auxiliary support columns; S4. Column height adjustment: After the ground part is installed, adjust the height of the cantilever formwork support structure according to the position of the cantilever formwork, start the hydraulic cylinder (4) in the installation sleeve (2), and drive the adjustment rod (5) to slide upward so that the top plate A contacts the bottom surface of the cantilever formwork; S5. Top plate fixing and angle adjustment: After the height is adjusted, the top plate A (10) is fixed to the bottom surface of the template through the mounting groove A (11) to achieve support; the screw rod (14) is passed through the threaded ear seat B (13) and the threaded hole of the connecting seat (12), and initially loosened; the position of the top plate B (17) is adjusted according to the required angle, and the top plates B (17) are fixed one by one through the mounting groove B (20). At this time, the screw rod (14) is tightened for a second time to ensure that the top plate auxiliary support structure is fixed, and the top plate A (10) is fixed to the bottom surface of the template through the mounting groove A (11) to achieve support.

Images