Adjustable limiting device for cast-in-place pile steel pipe column

Abstract

The utility model relates to an adjustable limiting device for a cast-in-place pile steel pipe column, which comprises a hoop matched with the outer contour of the steel pipe column, and the outer side of the hoop is provided with an adjusting limiter used for being connected and positioned with a peripheral reinforcement cage to support and guarantee the perpendicularity of the steel pipe column. In the installation process of the steel pipe column, the position of the steel pipe column can be effectively corrected through manual operation and adjustment of the limiting device, the steel pipe column is aligned and limited after being put down, deviation and inclination of the steel pipe column are avoided, and the steel pipe column limiting device is quite convenient and efficient.

Description

Technical Field

[0002] The utility model relates to the field of engineering, especially the field of engineering construction.

Background Art

[0004] During the early stage, the cast-in-place pile steel pipe column serves as the supporting column of the construction temporary trestle, bearing the important responsibility of construction safety; in the later stage, it is wrapped with concrete and transformed into the permanent structural column of the building, playing a crucial role in the structural stability and safety of the whole building. Since the steel pipe column needs to be anchored into the steel reinforcement cage of the engineering pile and lowered together, if the steel pipe column is not corrected before being lowered and not limited before concrete pouring, it is very easy to cause the steel pipe column to be displaced and tilted due to hoisting errors and concrete impact. The common method for preventing displacement and tilt is to weld cross-shaped steel bars up and down the steel pipe column to clamp the steel pipe column for correction and limitation. The disadvantages of this method are as follows: when welding, the steel pipe column is in a suspended state and is very easy to move due to the external force during welding, resulting in welding positioning errors, and it cannot be adjusted again after welding; secondly, since only the cross-shaped steel bars clamp the steel pipe column, if the steel bars are bent and deformed, the limitation fails, and the actual effect is limited.

[0005] Chinese patent document CN214883849U records an underground space building steel pipe column, which sets a bearing platform in the middle of the steel pipe column and adjusts the verticality of the steel pipe column through a verticality adjustment device driven by a motor installed on the bearing platform. CN104878775A records a turnover reverse construction method steel pipe column verticality adjustment guide device and its construction method, which uses multiple sections of steel pipes to make the steel pipe column, and the construction cost is too high.

Content of the Utility Model

[0007] In order to construct more conveniently and efficiently, and at the same time reduce the construction cost, the utility model provides an adjustable limiting device for the cast-in-place pile steel pipe column, which can effectively correct the position of the steel pipe column during the installation process and limit it after the steel pipe column is lowered, avoiding the displacement and tilt of the steel pipe column.

[0008] An adjustable limiting device for the cast-in-place pile steel pipe column includes: a hoop matching the outer contour of the steel pipe column, and an adjustment limiter connected to the outer side of the hoop for connecting and positioning with the peripheral steel reinforcement cage to support and ensure the verticality of the steel pipe column.

[0009] For the adjustable limiting device of the steel pipe column as described above, the hoop includes a semi-circular hoop body, the adjustment limiter is connected to the outer arc surface of the hoop body, and both ends of the hoop body are provided with connecting folding edges for connecting and clamping and turning outwards.

[0010] For the adjustable limiting device of the steel pipe column as described above, the hoop includes a U-shaped hoop body, the adjustment limiter is connected to the corner of the U-shaped hoop body, and both ends of the U-shaped hoop body are provided with connecting folding edges for connecting and clamping and turning outwards.

[0011] For the adjustable limit device of steel pipe columns as described above, connection holes for connection and clamping are provided on the connecting folded edges.

[0012] For the adjustable limit device of steel pipe columns as described above, there are two hoop fasteners which are symmetrically arranged, and fastening bolts for connecting the connecting folded edges are inserted into the connection holes.

[0013] For the adjustable limit device of steel pipe columns as described above, the adjusting and limiting device includes a support pipe connected to the outer side of the hoop fastener and an adjusting jack extending into the interior of the support pipe, and an adjusting mechanism for adjusting the combined length of the support pipe and the adjusting jack is installed between the adjusting jack and the support pipe.

[0014] For the adjustable limit device of steel pipe columns as described above, the adjusting mechanism includes a thread provided on the adjusting jack and an adjusting nut that is matched with the thread and presses against the free end of the support pipe.

[0015] For the adjustable limit device of steel pipe columns as described above, the adjusting mechanism may further include a plurality of adjusting holes provided on the support pipe, and elastic adjusting pins for adjusting in cooperation with the adjusting holes are provided on the adjusting jack.

[0016] For the adjustable limit device of steel pipe columns as described above, there are four adjusting and limiting devices, and the extension lines in the telescopic directions thereof pass through the geometric center of the combined body of the two hoop bodies.

[0017] For the adjustable limit device of steel pipe columns as described above, the adjusting jack includes a U-shaped connection block connected to one end away from the support pipe for fitting and connecting with the reinforcing bars of the steel reinforcement cage.

[0018] Compared with the prior art, the present utility model has the following advantages:

[0019] The present utility model provides a limit device for cast-in-place pile steel pipe columns. Compared with directly positioning by cross-shaped steel bars, the present utility model effectively improves the positioning accuracy of steel pipe columns and avoids the later processing costs for the deviation and inclination of steel pipe columns. Compared with the limit device controlled by a motor, the present utility model is simple to operate, convenient to use and has low economic cost.

Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for description in the embodiments will be briefly introduced below.

[0022] Figure 1 It is a cross-sectional view of a semi-circular hoop body;

[0023] Figure 2 It is a cross-sectional view of a U-shaped hoop body;

[0024] Figure 3It is a schematic structural diagram of a circular hoop;

[0025] Figure 4 It is a schematic structural diagram of a square hoop;

[0026] Figure 5 It is a schematic structural diagram of a circular adjustable limit device;

[0027] Figure 6 It is a schematic structural diagram of a screw adjustment mechanism;

[0028] Figure 7 It is a schematic structural diagram of a pin adjustment mechanism;

[0029] Figure 8 It is an elevation view of the use of a steel pipe column.

Detailed implementation manners

[0031] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. Specific embodiments:

[0033] Such as Figure 5 shown, an adjustable limit device for a cast-in-place pile steel pipe column includes a hoop 1 that matches the outer contour of the steel pipe column, and an adjustment limiter 2 is provided on the outer side of the hoop 1 for connecting and positioning with the peripheral steel reinforcement cage 4 to support and ensure the perpendicularity of the steel pipe column 3.

[0034] Specifically, as Figure 1 , Figure 3 shown, the hoop 1 includes a semi-circular hoop body 11, the adjustment limiter 2 is connected to the outer arc surface of the hoop body 11, and both ends of the hoop body 11 are provided with connecting flanges 12 for connecting and clamping and folding outwards.

[0035] Of course, as Figure 2 , Figure 4 shown, the hoop 1 can also be a U-shaped hoop body 13, the adjustment limiter 2 is connected at the corner of the U-shaped hoop body 13, and both ends of the U-shaped hoop body 13 are provided with connecting flanges 12 for connecting and clamping and folding outwards. The specific shape of the hoop body depends on the shape of the steel pipe column 3.

[0036] Furthermore, a connecting hole 121 for connecting and clamping is provided on the connecting flange 12.

[0037] Furthermore, there are two clamps 11 which are symmetrically arranged, and the connecting holes 121 are penetrated with fastening bolts 14 for connecting the connecting flanges 12. After the clamps 1 are tightly clamped to the steel pipe column 3 by the fastening bolts 14, the clamps 1 and the steel pipe column 3 can be spot welded to increase the connection strength.

[0038] Specifically, if Figure 6 As shown, the adjustment limiter 2 includes a support tube 21 connected to the outside of the clamp 1 and an adjustment top support 22 extending into the support tube 21, and an adjustment mechanism 23 for adjusting the combined length of the support tube 21 and the adjustment top support 22 is installed between the adjustment top support 22 and the support tube 21.

[0039] Furthermore, the adjustment mechanism 23 includes a thread 231 disposed on the adjustment support 22 and an adjustment nut 232 that cooperates with the thread 231 and is pressed against the free end of the support tube 21 .

[0040] Specifically, the combined length of the support tube 21 and the adjustable top bracket 22 can also be adjusted by a pin. Figure 7 As shown, the adjustment mechanism 23 includes a plurality of adjustment holes 211 provided on the support tube 21, and the adjustment top support 22 is provided with an elastic adjustment pin 24 that cooperates with the adjustment holes 211 for adjustment. Compared with bolt adjustment, the adjustment precision of the elastic adjustment pin is slightly lower. If the adjustment precision is to be increased, the number of adjustment holes can be increased and the spacing between the adjustment holes can be reduced.

[0041] Specifically, there are four adjustment limiters 2, and the extension lines of the adjustment limiters 2 in the telescopic direction pass through the geometric center of the two hoop bodies 11 connected together. The geometric center can make adjustment more convenient and prevent the steel pipe column from deviating. The adjustment limiter 2 is directly welded to the outside of the clamp 1.

[0042] Specifically, the adjustment support 22 includes a U-shaped connection block 221 connected to one end away from the support tube 21 for fittingly connecting with the steel cage reinforcement rib 41. After the position adjustment of the steel pipe column 3 is completed, the U-shaped connection block 221 presses the steel cage reinforcement rib 41 tightly. At this time, the U-shaped connection block 221 is welded to the steel cage reinforcement rib 41 to increase its stability and prevent displacement.

[0043] The specific implementation steps of this utility model are as follows:

[0044] Hoisting: hoist the steel cage 4 and the steel pipe column 3, and place the steel pipe column 3 in the steel cage 4, ensuring that the steel cage 4 and the steel pipe column 3 are hoisted and lowered synchronously.

[0045] Install the first limit device: Assemble the adjustment limiters 2 before lowering and weld them to the corresponding position of the clamp 1. When lowering to install the first limit device, put the clamp 1 into the steel cage 3 from the gap between the main bars on both sides of the steel cage 3, and clamp it on the steel pipe column 3 by tightening the bolts 14. The installation position of the clamp 1 on the steel pipe column 3 should be at the same level as the reinforcement ribs 41 of the steel cage. After the bolts are tightened, spot weld the clamp 1 and the steel pipe column 3 to ensure that there is no displacement.

[0046] Measurement and adjustment: Measure the verticality of the steel pipe column 3 and the steel cage 4, and adjust the combined length of the support pipe 21 and the adjustment jacking through the adjustment mechanism until the U-shaped connection block 221 presses the reinforcement rib 41 and the position of the steel pipe column 3 is correct. Weld the U-shaped connection block 221 to the main reinforcement rib 41 of the steel cage to prevent displacement.

[0047] Install the second limiting device: When the steel pipe column 3 and the steel cage 4 are lowered to the position where the second limiting device can be installed, repeat the steps of installing the first limiting device, install the second limiting device, and the position of the steel pipe column and the steel cage is accurate.

[0048] Lower the steel cage 4 and the steel pipe column 3 to the designed height.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable limit device for a bored pile steel pipe column, characterized in that Comprising: A hoop (1) matching the outer contour of the steel pipe column, and an adjusting and limiting device (2) for connecting and positioning with the peripheral steel reinforcement cage (4) to support and ensure the verticality of the steel pipe column (3) is provided on the outer side of the hoop (1).

2. The adjustable limit device for cast-in-place pile steel pipe column according to claim 1 is characterized in that: The hoop (1) includes a semi-circular hoop body (11), the adjusting and limiting device (2) is connected to the outer arc surface of the hoop body (11), and connecting flanges (12) for connecting and clamping and folding outwards are provided at both ends of the hoop body (11).

3. The adjustable limit device for cast-in-place pile steel pipe column according to claim 1 is characterized in that: The hoop (1) includes a U-shaped hoop body (13), the adjusting and limiting device (2) is connected at the corner of the U-shaped hoop body (13), and connecting flanges (12) for connecting and clamping and folding outwards are provided at both ends of the U-shaped hoop body (13).

4. The adjustable limit device for cast-in-place pile steel pipe column according to claim 2 or 3, characterized in that: A connecting hole (121) for connecting and clamping is provided on the connecting flange (12).

5. The adjustable limit device for steel pipe column according to claim 4 is characterized in that There are two hoops (1) which are symmetrically arranged, and a fastening bolt (14) for connecting the connecting flanges (12) is inserted into the connecting hole (121).

6. The adjustable limit device for cast-in-place pile steel pipe column according to claim 4 is characterized in that: The adjusting and limiting device (2) includes a support pipe (21) connected to the outer side of the hoop (1) and an adjusting jack (22) extending into the interior of the support pipe (21), and an adjusting mechanism (23) for adjusting the combined length of the support pipe (21) and the adjusting jack (22) is installed between the adjusting jack (22) and the support pipe (21).

7. The adjustable limit device for cast-in-place pile steel pipe column according to claim 6 is characterized in that: The adjusting mechanism (23) includes a thread (231) provided on the adjusting jack (22) and an adjusting nut (232) which is matched with the thread (231) and presses against the free end of the support pipe (21).

8. The adjustable limit device for cast-in-place pile steel pipe column according to claim 6 is characterized in that: The adjusting mechanism (23) includes a plurality of adjusting holes (211) provided on the support pipe (21), and an elastic adjusting pin (24) which is matched with the adjusting holes (211) for adjustment is provided on the adjusting jack (22).

9. The adjustable limit device for cast-in-place pile steel pipe column according to claim 7, characterized in that: There are four adjusting and limiting devices (2), and the extension lines in the telescopic direction pass through the geometric center of the connecting body of the two hoop bodies (11).

10. The adjustable limit device for cast-in-place pile steel pipe column according to claim 7, characterized in that: The adjusting jack (22) includes a U-shaped connecting block (221) connected to one end far away from the support pipe (21) for fitting and connecting with the steel reinforcement cage stirrup (41).

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