Combined device for breaking and removing pile head of bored pile foundation

Abstract

The utility model discloses a combined device for breaking a pile head of a bored pile foundation, and relates to the technical field of combined equipment for breaking the pile head. The device comprises a sleeving ring, a pile head cover and an anti-disengaging pressing block, and is characterized in that the sleeving ring is used for being arranged at the upper end of a steel bar ball cage of a pile foundation in a sleeving mode, the middle of the sleeving ring abuts against the anti-disengaging pressing block, the anti-disengaging pressing block is fixedly installed on the side portion of a main steel bar column of the steel bar ball cage, and the pile head cover is fixed to the upper end of the sleeving ring through a fixing bolt matched with a nut. A plurality of protective sleeves used for being connected with the main reinforcing steel bar columns in a sleeved mode are distributed in the pile head cover at equal intervals, and polyurethane buffer sleeves used for protecting the main reinforcing steel bar columns are arranged in the protective sleeves. And when the overfilled concrete outside the protective sleeve is detached, the impact force is buffered through the polyurethane buffer sleeve when the vibration is transmitted to the protective sleeve.

Description

Technical Field

[0001] The utility model belongs to the field of combined equipment for breaking pile heads, in particular to a combined device for breaking pile heads of bored pile foundations. Background Art

[0002] Bored pile foundation, also known as bored pile, refers to the pile formed in the foundation soil by mechanical drilling, steel pipe squeezing or manual excavation at the construction site, and the pile is made by placing a pile foundation steel cage inside and pouring concrete.

[0003] In order to ensure the quality of the pile head during pile foundation construction, the pile top elevation is generally higher than the designed elevation. When pouring concrete, the sediment at the pile bottom and the impurities precipitated in the mud during the pouring process will form a certain thickness of floating slurry on the concrete surface. After the concrete solidifies, the over-poured part needs to be chiseled out to expose the steel bars above the pile top elevation. This part of the over-poured pile head is generally broken by an artificial pile breaking valve method, that is, the pile head is broken by a manual handheld concrete cutter or a rock drill. However, the pile head breaking process is not only laborious but also easily causes vibration to the column steel bars of the pile body itself during the process of cutting and crushing the pile head, and the crushing cutting depth cannot be guaranteed. In view of this, the present utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a combined device for breaking the pile head of a bored pile foundation.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A combined device for breaking a pile head of a bored pile foundation comprises a sleeve ring, a pile head cover and an anti-slipping pressure block, wherein the sleeve ring is used to be sleeved on the upper end of a steel bar cage of the pile foundation, the middle part of the sleeve ring abuts against the anti-slipping pressure block, the anti-slipping pressure block is fixedly mounted on the side of the main steel bar column of the steel bar cage, the upper end of the sleeve ring is fixed with the pile head cover by means of a fixing bolt and a nut, a plurality of protective sleeves for sleeved main steel bar columns are evenly distributed inside the pile head cover, a polyurethane buffer sleeve for protecting the main steel bar column is provided inside the protective sleeve, a groove body for embedding the anti-slipping pressure block is provided on the side wall of the protective sleeve, and a sealing gasket is fitted inside the groove body;

[0007] The upper ends of the multiple protective sleeves are all against a pressure block, and the backs of the multiple protective sleeves are clamped with the L-shaped strip through the clamping block, and the L-shaped strip is fixed on the inner wall of the pile head cover;

[0008] The side wall of the pile head cover is provided with slots for inserting spacer wedge blocks at equal intervals. Each spacer wedge block is fixed by a limit bolt at the upper end of the pile head cover. The side wall of the pile head cover is fixed with a lifting lug for lifting.

[0009] Optionally, the inner wall and outer wall surfaces of the polyurethane buffer sleeve are provided with interference protrusions at equal intervals, and the polyurethane buffer sleeve is an integrally molded design.

[0010] Optionally, a reserved hole for the docking sleeve is provided at the side end of the sleeve ring, and the docking sleeve is integrally formed at the bottom of the pile head cover, a screw hole connected to the inside of the docking sleeve is provided inside the side end of the pile head cover, and a sealing ring is provided on the outside of the docking sleeve.

[0011] Optionally, the side wall of the pile head cover is provided with a plurality of installation grooves for inserting limit blocks, each limit block is fixed by a positioning bolt at the top of the pile head cover, the front end of each limit block is threadedly connected to a resistance bolt, and the bottom of the resistance bolt is rotatably connected to the pressure strip through a bearing.

[0012] Optionally, the central opening of the sleeve ring, the outside of the spacer wedge block, the outside of the anti-slip pressure block and the outside of the main steel bar column are all covered with plastic cloth, and an isolation liquid is applied between the plastic cloth and the central opening of the sleeve ring, the outside of the spacer wedge block, the outside of the anti-slip pressure block and the outside of the main steel bar column.

[0013] Optionally, the exteriors of the plurality of main reinforcement columns are all sleeved with anti-leakage rings, and the upper ends of the anti-leakage rings are in contact with the bottom of the sleeve rings.

[0014] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0015] 1. The utility model prevents the over-filled concrete from adhering to the main steel bar column through a plurality of protective sleeves sleeved on the outside of the main steel bar column, so that it is not necessary to remove the over-filled concrete in the later stage, thereby reducing the impact of vibration on the main steel bar column during concrete removal, and when the over-filled concrete outside the protective sleeve is separated, the vibration is transmitted to the protective sleeve and the impact force is buffered by the polyurethane buffer sleeve to protect the main steel bar column. Considering that it is easy to break the pile head concrete too deep or too shallow when manually using a handheld concrete cutter or a rock drill, the sleeve ring of the utility model can be set on the removal line of the pile head, that is, the upper and lower ends of the sleeve ring are respectively in contact with the anti-stripping pressure block and the anti-leakage ring, and the upper surface of the sleeve ring can be coated with a striking color coating in the later stage, so that when workers remove the pile head, they can observe the position of the sleeve ring to know whether the removal depth reaches the standard;

[0016] 2. In order to further reduce the impact on the main steel column when removing the pile head concrete, the utility model reduces the amount of concrete injected into the pile head through the spacer wedge blocks and the protective sleeve, that is, multiple spacer wedge blocks and the protective sleeve occupy the space for injecting concrete inside the pile head cover itself, thereby reducing the amount of removed concrete. Therefore, the impact of removal is naturally reduced. During removal, multiple spacer wedge blocks can be removed first, and plastic sheets can be used to prevent concrete from adhering to the surface of the spacer wedge blocks, so that the spacer wedge blocks can be directly removed. After removal, the area left behind is convenient for workers to place removal tools in the area for removal.

[0017] The specific implementation of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described below are only some embodiments. A person skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0019] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0020] Figure 2 This is a top view of the combined parts structure of the pile head cover, protective sleeve and polyurethane buffer sleeve in the utility model;

[0021] Figure 3 This is a top view of the combined parts structure of the middle spacer wedge block, the limit block and the protective sleeve of the utility model;

[0022] Figure 4 This is a top view of the combined parts structure of the pile head cover and the sleeve ring in the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the combined parts of the middle partition wedge block and the plastic sheet of the utility model;

[0024] Figure 6 for Figure 1 A schematic diagram of the enlarged structure of the part A;

[0025] Figure 7 for Figure 1 A magnified schematic diagram of the structure of part B;

[0026] Figure 8 for Figure 1 The enlarged schematic diagram of the C part structure;

[0027] Figure 9 for Figure 1 The enlarged schematic diagram of the D part structure;

[0028] Figure 10 for Figure 1 The enlarged schematic diagram of the E part structure;

[0029] Figure 11 for Figure 1 An enlarged schematic diagram of the F part structure.

[0030] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0031] 1. Socket ring; 2. Anti-slip pressure block; 3. Main steel bar column; 4. Fixing bolt; 5. Nut; 6. Pile head cover; 7. Protective sleeve; 8. Polyurethane buffer sleeve; 9. Sealing gasket; 10. Pressure strip; 11. Block; 12. L-shaped strip; 13. Anti-leakage ring; 14. Spacer wedge block; 15. Limit bolt; 16. Lifting ear; 17. Contact protrusion; 18. Docking sleeve; 19. Sealing ring; 20. Limit block; 21. Positioning bolt; 22. Contact bolt; 23. Plastic sheeting; 24. Isolation fluid.

[0032] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] The present invention will now be described in further detail with reference to the accompanying drawings.

[0034] See also Figures 1 to 11 The utility model provides a technical solution: a combined device for breaking the pile head of a bored pile foundation, comprising a sleeve ring 1, a pile head cover 6 and an anti-slipping pressure block 2. The sleeve ring 1 is used to be sleeved on the upper end of the steel ball cage of the pile foundation. The middle part of the sleeve ring 1 conflicts with the anti-slipping pressure block 2. The anti-slipping pressure block 2 is fixedly mounted on the side of the main steel bar column 3 of the steel ball cage. The upper end of the sleeve ring is fixed with the pile head cover 6 by a fixing bolt 4 and a nut 5. A plurality of protective sleeves 7 for sleeved on the main steel bar column 3 are evenly spaced inside the pile head cover 6. A polyurethane buffer sleeve 8 for protecting the main steel bar column 3 is provided inside the protective sleeve 7. A groove for embedding the anti-slipping pressure block 2 is opened on the side wall of the protective sleeve 7, and a sealing gasket 9 is fitted inside the groove.

[0035] The upper ends of the multiple protective sleeves 7 are all against the pressure block, and the backs of the multiple protective sleeves 7 are clamped with the L-shaped strip 12 through the clamping block 11, and the L-shaped strip 12 is fixed on the inner wall of the pile head cover 6;

[0036] The side walls of the pile head cover 6 are provided with slots for inserting spacer wedge blocks 14 at equal intervals. Each spacer wedge block 14 is fixed by a limit bolt 15 at the upper end of the pile head cover 6. The side walls of the pile head cover 6 are fixed with lifting ears 16 for lifting. Considering that after the concrete solidifies, the over-filled part needs to be chiseled out to expose the steel bars above the pile top elevation. This part of the over-filled pile head is generally broken by an artificial pile breaking valve method, that is, a manual handheld concrete cutter or rock drill is used to break the pile head. However, the pile head breaking process is not only laborious but also easily causes vibration to the column steel bars of the pile body itself during the process of cutting and crushing the pile head, and the crushing cutting depth cannot be guaranteed. The utility model prevents the concrete of the over-filled part from adhering to the main steel bar column 3 by a plurality of protective sleeves 7 sleeved on the outside of the main steel bar column 3. Thereby, when the over-poured concrete is stripped off later, there is no need to remove this part of the concrete, thereby reducing the impact of vibration on the main steel column 3 during concrete removal, and when the over-poured concrete outside the protective sleeve 7 is separated, the vibration will be transmitted to the protective sleeve 7 and the impact force will be buffered by the polyurethane buffer sleeve 8 to protect the main steel column 3. Considering that it is easy to break the pile head concrete too deep or too shallow when manually holding a concrete cutter or a rock drill, the sleeve ring 1 of the utility model can be set on the removal line of the pile head, that is, the upper and lower ends of the sleeve ring 1 are respectively in contact with the anti-slip pressure block 2 and the anti-leakage ring 13, and the upper surface of the sleeve ring 1 can be coated with a striking color coating in the later stage, so that when workers remove the pile head, they can observe the position of the sleeve ring 1 to know whether the removal depth reaches the standard.

[0037] Among them, the inner wall and outer wall surface of the polyurethane buffer sleeve 8 are evenly spaced with interference protrusions 17. The polyurethane buffer sleeve 8 is an integrally molded design. By setting the polyurethane buffer sleeve 8, it acts as a buffer tube for the main steel bar column 3 in the protective sleeve 7, avoiding impact on the main steel bar when removing the pile head concrete.

[0038] Among them, the side end of the sleeve ring 1 is provided with a reserved hole for the docking sleeve 18 to be inserted, and the docking sleeve 18 is integrally formed at the bottom of the pile head cover 6. The inside of the side end of the pile head cover 6 is provided with a screw hole connected to the inside of the docking sleeve 18, and the outside of the docking sleeve 18 is provided with a sealing ring 19. By arranging multiple docking sleeves 18 at the bottom of the pile head cover 6 that dock with the reserved holes, it is prevented that concrete flows from the connection between the sleeve ring 1 and the pile head cover 6 into the connection position of the fixing bolt 4 during injection, thereby causing the fixing bolt 4 to be locked, resulting in the disadvantage that the pile head cover 6 and the sleeve ring 1 are difficult to separate in the later stage.

[0039] Among them, the side wall of the pile head cover 6 is provided with a plurality of installation grooves for inserting limit blocks 20, each limit block 20 is fixed by a positioning bolt 21 at the top of the pile head cover 6, and the front end of each limit block 20 is threadedly connected to a resistance bolt 22, and the bottom of the resistance bolt 22 is rotatably connected to the pressure strip 10 through a bearing. By setting the limit bolt 15, the limit block 20 inserted in the pile head cover 6 is fixed, and the resistance bolt 22 on the limit block 20 cooperates with the limit strip to limit the position of the block 11 connected to the L-shaped strip 12 to prevent the block 11 from slipping.

[0040] Among them, the central opening of the sleeve ring 1, the outside of the spacer wedge block 14, the outside of the anti-slip pressure block 2 and the outside of the main steel column 3 are all covered with plastic cloth 23, and an isolation liquid 24 is applied between the plastic cloth 23 and the central opening of the sleeve ring 1, the outside of the spacer wedge block 14, the outside of the anti-slip pressure block 2 and the outside of the main steel column 3. By setting the plastic cloth 23 and the lubricating liquid or isolation liquid 24, the concrete and the central opening of the sleeve ring 1, the outside of the spacer wedge block 14, the anti-slip pressure block 2 and the main steel column 3 are placed. In the case where the steel bar column 3 is bonded, when these main parts are not bonded to the concrete, the difficulty of removing the pile head concrete at a later time is reduced, that is, the sleeve ring 1 and the anti-slip pressure block 2 are separated and not bonded to the concrete by two layers of plastic cloth 23 and lubricating liquid or isolation liquid 24. After removing the pile head cover 6, the workers can remove the pile head concrete from the side, and the spacer wedge block 14 is separated from the concrete by the plastic cloth 23, so that it can be directly pulled out at a later time, which helps the workers get an extra demolition position.

[0041] Among them, the outside of multiple main steel bars 3 are all sleeved with anti-leakage rings 13, and the upper end of the anti-leakage ring 13 is in conflict with the bottom of the sleeve ring 1. By setting the anti-leakage ring 13, it is prevented that when lubricating liquid or barrier liquid is applied, the liquid flows down along the main steel bar column 3, affecting the pouring of concrete in the main steel bar column 3.

[0042] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention should be understood by anyone. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention. The technology, shape, and structure not described in detail in the present invention are all known technologies.

Claims

1. A combined device for breaking the pile head of a bored pile foundation, comprising a sleeve ring (1), a pile head cover (6) and an anti-slip pressure block (2), characterized in that: The sleeve ring (1) is used to be sleeved on the upper end of the steel bar cage of the pile foundation, the middle part of the sleeve ring (1) contacts the anti-slip pressure block (2), and the anti-slip pressure block (2) is fixedly installed on the side of the main steel bar column (3) of the steel bar cage. The upper end of the sleeve ring is fixed with a pile head cover (6) through a fixing bolt (4) and a nut (5). A plurality of protective sleeves (7) for sleeved on the main steel bar column (3) are evenly distributed inside the pile head cover (6). A polyurethane buffer sleeve (8) for protecting the main steel bar column (3) is provided inside the protective sleeve (7). A groove body for embedding the anti-slip pressure block (2) is provided on the side wall of the protective sleeve (7), and a sealing gasket (9) is attached to the inside of the groove body. The upper ends of the plurality of protective sleeves (7) are all in contact with a pressure strip (10), and the backs of the plurality of protective sleeves (7) are clamped with an L-shaped strip (12) through a clamping block (11), and the L-shaped strip (12) is fixed on the inner wall of the pile head cover (6); The side wall of the pile head cover (6) is provided with slots for inserting spacer wedge blocks (14) at equal intervals, and each spacer wedge block (14) is fixed by a limit bolt (15) at the upper end of the pile head cover (6). The side wall of the pile head cover (6) is fixed with a lifting lug (16) for lifting.

2. A combined device for breaking the pile head of a bored pile foundation according to claim 1, characterized in that: The inner and outer wall surfaces of the polyurethane buffer sleeve (8) are provided with abutment protrusions (17) at equal intervals, and the polyurethane buffer sleeve (8) is of an integrally formed design.

3. A combined device for breaking the pile head of a bored pile foundation according to claim 1, characterized in that: The side end of the sleeve ring (1) is provided with a reserved hole for inserting the docking sleeve (18), and the docking sleeve (18) is integrally formed at the bottom of the pile head cover (6). The inside of the side end of the pile head cover (6) is provided with a screw hole connected to the inside of the docking sleeve (18), and the outside of the docking sleeve (18) is provided with a sealing ring (19).

4. A combined device for breaking the pile head of a bored pile foundation according to claim 1, characterized in that: The side wall of the pile head cover (6) is provided with a plurality of mounting grooves for inserting the limit blocks (20), each limit block (20) is fixed by a positioning bolt (21) at the top end of the pile head cover (6), the front end of each limit block (20) is threadedly connected to a resistance bolt (22), and the bottom of the resistance bolt (22) is rotatably connected to the pressure strip (10) through a bearing.

5. A combined device for breaking the pile head of a bored pile foundation according to claim 1, characterized in that: The central opening of the sleeve ring (1), the outside of the spacer wedge block (14), the outside of the anti-slip pressure block (2) and the outside of the main steel bar column (3) are all covered with a plastic sheet (23), and an isolation liquid (24) is applied between the plastic sheet (23) and the central opening of the sleeve ring (1), the outside of the spacer wedge block (14), the outside of the anti-slip pressure block (2) and the outside of the main steel bar column (3).

6. A combined device for breaking the pile head of a bored pile foundation according to claim 1, characterized in that: The exteriors of the plurality of main steel bars (3) are all sleeved with anti-leakage rings (13), and the upper ends of the anti-leakage rings (13) are in contact with the bottom of the sleeve ring (1).

Images