Safety protection device for pile foundation construction in karst area close to residential house

Abstract

The utility model relates to the technical field of pile foundation construction protection, and discloses a pile foundation construction safety protection device in a karst area close to a house, which comprises a protection outer cylinder and a protection inner cylinder which are matched with pile holes in the ground, and a plurality of through holes are formed in the side face of the protection outer cylinder. A plurality of opening grooves are formed in the inner side walls of the upper ends of the protective outer cylinder and the protective inner cylinder, connecting plates are arranged in the opening grooves, clamping tables are fixedly connected to the side faces of the upper ends of the connecting plates, and clamping grooves matched with the clamping tables are formed in the inner side walls of the lower ends of the protective outer cylinder and the protective inner cylinder; the lower ends of the protective outer cylinder and the protective inner cylinder are provided with guide angles matched with the clamping tables. According to the utility model, when the two protective outer cylinders or the two protective inner cylinders are connected, the elastic connecting plates and the clamping tables on the connecting plates are clamped in the clamping grooves, so that the two protective outer cylinders or the two protective inner cylinders can be conveniently connected and mounted, and the stability of a pile foundation after construction in a karst area is improved; and thus, the safety of nearby houses is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction protection, in particular to a safety protection device for pile foundation construction in a karst area near a residential house. Background Technique

[0002] The karst phenomenon brings great uncertainty to the construction of pile foundation concrete, and has a great impact on the construction quality and construction cost. Therefore, when building a pile foundation near a residential house, in order to prevent adverse effects on the residential house, a safety protection device for pile foundation construction is required.

[0003] In order to improve the stability of the pile foundation, many improvements have been made to the safety protection device for pile foundation construction in the karst area in the prior art. For example, the patent with the publication number CN219011197U discloses a pile foundation protection device in a karst area, which includes a protection cylinder. The protection cylinder includes a protection inner cylinder and a protection outer cylinder. The protection outer cylinder abuts against the inner wall of the pile hole. A pouring cavity is formed between the protection inner cylinder and the protection outer cylinder, and a connection hole is opened on the protection outer cylinder. Insert the protection inner cylinder and the protection outer cylinder into the pile hole, so that the protection outer cylinder abuts against the inner wall of the pile hole. Then, pour concrete into the pouring cavity first. The concrete seeps into the soil layer through the connection hole and fills the gaps in the soil layer and the gaps in the karst cave until the concrete liquid level is flush with the top end of the protection inner cylinder. Then, pour concrete into the protection inner cylinder. After the concrete solidifies, a pile foundation is formed. By grouting the gaps in the soil layer, the probability of soil loss at the connection between the protection outer cylinder and the soil layer is reduced, so as to reduce the probability of gaps appearing at the connection between the protection cylinder and the soil, and thus improve the stability of the pile foundation.

[0004] The above patent has obvious beneficial effects, but there are still the following deficiencies in actual operation:

[0005] In the above comparative document, by setting the protection inner cylinder and the protection outer cylinder, the construction safety of the pile foundation in the karst area near the residential house is improved. When connecting two protection outer cylinders or two protection inner cylinders in the above comparative document, a connecting screw rod is required for positioning connection. When using a connecting screw rod for connection during actual installation, several through holes for passing the connecting screw rod need to be aligned. Therefore, it is more troublesome to connect the protection outer cylinder or the protection inner cylinder. Therefore, it is urgent for this field to improve the safety protection device for pile foundation construction in the karst area near the residential house, so as to solve the defects of the prior art. Content of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the utility model provides a safety protection device for pile foundation construction in a karst area near a residential house, which is convenient for connecting and installing between two protection outer cylinders or two protection inner cylinders, improves the stability of the pile foundation after construction in the karst area, and further improves the safety of the area near the residential house.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A safety protection device for pile foundation construction in a karst area near a residential house, comprising a protective outer cylinder and a protective inner cylinder adapted to the pile hole on the ground. A plurality of through holes are provided on the side surface of the protective outer cylinder. A plurality of opening grooves are provided on the inner side walls of the upper ends of the protective outer cylinder and the protective inner cylinder. A connecting plate is provided in the opening groove. A clamping table is fixedly connected to the upper side surface of the connecting plate. Clamping grooves adapted to the clamping table are provided on the inner side walls of the lower ends of the protective outer cylinder and the protective inner cylinder. Guide angles adapted to the clamping table are provided at the lower ends of the protective outer cylinder and the protective inner cylinder. The connecting plate is elastic. A positioning unit is provided between the protective outer cylinder and the protective inner cylinder. An auxiliary fixing unit for assisting in connecting the protective outer cylinder and the protective inner cylinder is also provided on the ground.

[0008] Preferably, stepped holes communicating with the opening grooves are provided on the side surfaces of the protective outer cylinder and the protective inner cylinder. A limiting bolt whose one end is threadedly connected to the connecting plate is inserted in the stepped hole.

[0009] Preferably, the positioning unit includes an auxiliary frame adapted to the stepped hole on the side surface of the protective inner cylinder. The limiting bolt also mounts the auxiliary frame. An auxiliary wheel is rotatably connected to the end of the auxiliary frame away from the protective inner cylinder. The side surface of the auxiliary wheel abuts against the inner side wall of the protective outer cylinder.

[0010] Preferably, the auxiliary fixing unit includes a mounting frame fixedly installed on the ground. A plurality of telescopic devices are fixedly installed on the mounting frame. A pressing plate is provided at the telescopic end of each telescopic device.

[0011] Preferably, a plugging block is fixedly connected to the side surface of the pressing plate. A plugging groove adapted to the plugging block is provided at the telescopic end of the telescopic device.

[0012] Preferably, a limiting block is fixedly connected to the lower end of the connecting plate. Limiting grooves adapted to the limiting block are provided on the opposite side walls in the opening groove.

[0013] Preferably, an inclined angle adapted to the guide angle is provided at the upper end of the connecting plate.

[0014] In view of the deficiencies of the prior art, the present utility model provides a safety protection device for pile foundation construction in a karst area near a residential house, overcoming the deficiencies of the prior art. The beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, when connecting two protective outer cylinders or two protective inner cylinders, through the elastic connecting plate, the clamping table on the connecting plate is clamped in the clamping groove, which is convenient for connecting and installing between the two protective outer cylinders or the two protective inner cylinders, and improves the stability of the pile foundation after construction in the karst area, thereby improving the safety of the area near the residential house.

[0016] 2. In the present utility model, when installing the connecting plate on the protective inner cylinder, the auxiliary frame is installed in the stepped hole through the limit bolt. When the protective inner cylinder moves downward, the auxiliary wheel abuts against the inner side wall of the protective outer cylinder, thereby positioning the position of the protective inner cylinder, preventing the protective inner cylinder from shifting, and improving the accuracy after the installation of the protective inner cylinder.

[0017] 3. In the present utility model, when it is necessary to connect two protective outer cylinders or two protective inner cylinders, several telescopic devices are started. The telescopic ends of the telescopic devices drive the pressing plate to move, pressing and fixing the protective outer cylinder or the protective inner cylinder, which is convenient for connecting and installing the protective outer cylinder or the protective inner cylinder.

[0018] Other features and advantages of the present utility model will be described in the subsequent description, and partly become obvious from the description, or be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures pointed out in the description, claims and drawings. Brief Description of the Drawings

[0019] The drawings are used to provide further understanding of the present utility model, and constitute a part of the description. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the through hole in the present utility model;

[0022] Figure 3 It is a schematic diagram of the sectional view of the protective outer cylinder and the protective inner cylinder in the present utility model;

[0023] Figure 4 It is Figure 2 The enlarged schematic diagram at position A in

[0024] Figure 5 It is Figure 3 The enlarged schematic diagram at position B in

[0025] Figure 6 It is Figure 3 The enlarged schematic diagram at position C in

[0026] Figure 7 It is Figure 3 The enlarged schematic diagram at position D in

[0027] In the figure: 1. Protective outer cylinder; 2. Protective inner cylinder; 3. Through hole; 4. Connecting plate; 5. Open slot; 6. Clamping groove; 7. Guide angle; 8. Positioning unit; 9. Auxiliary fixing unit; 10. Ground; 11. Step hole; 12. Limit bolt; 13. Auxiliary frame; 14. Auxiliary wheel; 15. Clamping platform; 16. Installation frame; 17. Telescopic device; 18. Pressing plate; 19. Plug-in block; 20. Plug-in slot; 21. Limit block; 22. Limit slot. Specific implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] Embodiment 1

[0030] Please refer to Figures 1-7 , a safety protection device for pile foundation construction in a karst area near a residential house, including a protective outer cylinder 1 and a protective inner cylinder 2 adapted to the pile hole on the ground 10. A plurality of through holes 3 are provided on the side surface of the protective outer cylinder 1. A plurality of open slots 5 are provided on the inner side walls of the upper ends of the protective outer cylinder 1 and the protective inner cylinder 2. A connecting plate 4 is provided in the open slot 5. A clamping platform 15 is fixedly connected to the upper side surface of the connecting plate 4. Clamping grooves 6 adapted to the clamping platform 15 are provided on the inner side walls of the lower ends of the protective outer cylinder 1 and the protective inner cylinder 2. Guide angles 7 adapted to the clamping platform 15 are provided at the lower ends of the protective outer cylinder 1 and the protective inner cylinder 2. The connecting plate 4 has elasticity. A positioning unit 8 is provided between the protective outer cylinder 1 and the protective inner cylinder 2. An auxiliary fixing unit 9 for assisting in connecting the protective outer cylinder 1 and the protective inner cylinder 2 is also provided on the ground 10. An inclined angle adapted to the guide angle 7 is provided at the upper end of the connecting plate 4.

[0031] Specific implementation method in this embodiment: The karst phenomenon brings great uncertainty to the construction of pile foundation concrete, which has a great impact on the construction quality and cost. Therefore, when building a pile foundation near a residential house, in order to prevent adverse effects on the residential house, a pile foundation construction safety protection device is required. In this embodiment, the protective outer cylinder 1 is first placed in the pile hole that has been excavated. When connecting two protective outer cylinders 1, the auxiliary fixing unit 9 is used to fix the protective outer cylinder 1 that has been placed in the pile hole. Align the lower end of the protective outer cylinder 1 to be installed with the end of the protective outer cylinder 1 that has been installed. The protective outer cylinder 1 to be installed moves downward, and the guiding angle 7 squeezes the bevel angle on the connecting plate 4. The elastic connecting plate 4 deforms until the ends of the two protective outer cylinders 1 are in contact. At this time, the clamping platform 15 is adapted to the clamping groove 6, and the connecting plate 4 resets. Then, the clamping platform 15 is clamped in the clamping groove 6 to connect the two protective outer cylinders 1, and the installation is convenient and fast. Loosen the auxiliary fixing unit 9 and continue to move the protective outer cylinder 1 downward. After the protective outer cylinder 1 is installed, install the protective inner cylinder 2 in the above-mentioned manner. The positioning unit 8 is provided on the side of the protective inner cylinder 2 to ensure that the protective inner cylinder 2 is located at the center of the protective outer cylinder 1 after installation. After the protective inner cylinder 2 is installed, then pour concrete between the protective outer cylinder 1 and the protective inner cylinder 2. The concrete seeps into the soil layer through the through holes 3 and fills the gaps in the soil layer and the gaps in the karst caves until the concrete level is flush with the top end of the protective inner cylinder 2. Then pour concrete into the protective inner cylinder 2. After the concrete solidifies, a pile foundation is formed. By grouting the gaps in the soil layer, the probability of soil loss at the connection between the protective outer cylinder 1 and the soil layer is reduced. Therefore, the stability of the pile foundation after construction in the karst area is improved, and the safety of the adjacent residential house is also improved.

[0032] Embodiment Two

[0033] Please refer to Figure 3 and Figure 4 This embodiment includes the above-mentioned embodiment. Among them, it further includes: stepped holes 11 communicating with the opening grooves 5 are formed on the sides of both the protective outer cylinder 1 and the protective inner cylinder 2. A limit bolt 12 whose one end is threadedly connected to the connecting plate 4 is inserted through the stepped hole 11. A limit block 21 is fixedly connected to the lower end of the connecting plate 4. Limit grooves 22 adapted to the limit block 21 are formed on the opposite side walls in the opening groove 5.

[0034] Specific implementation method in this embodiment: The connecting plate 4 can be assembled later. The connecting plate 4 is clamped in the opening groove 5. The limit bolt 12 passes through the stepped hole 11 and is threadedly connected to the connecting plate 4. The limit block 21 at the lower end of the connecting plate 4 is inserted into the limit groove 22, which is convenient for installing the connecting plate 4 on site, and the installed connecting plate 4 also has relatively high strength.

[0035] Embodiment Three

[0036] Please refer to Figure 3and Figure 5 , this embodiment includes all the above embodiments, and further includes: the positioning unit 8 includes an auxiliary frame 13 adapted to the stepped hole 11 on the side surface of the inner protection cylinder 2. The limit bolt 12 installs the auxiliary frame 13 at the same time. One end of the auxiliary frame 13 away from the inner protection cylinder 2 is rotatably connected with an auxiliary wheel 14, and the side surface of the auxiliary wheel 14 abuts against the inner side wall of the outer protection cylinder 1.

[0037] Specific implementation manner in this embodiment: The stepped hole 11 on the side surface of the inner protection cylinder 2 is adapted to the auxiliary frame 13. When installing the connecting plate 4 on the inner protection cylinder 2, the auxiliary frame 13 is installed in the stepped hole 11 through the limit bolt 12. When the inner protection cylinder 2 moves downward, the auxiliary wheel 14 abuts against the inner side wall of the outer protection cylinder 1, thereby positioning the position of the inner protection cylinder 2 and preventing the inner protection cylinder 2 from shifting.

[0038] Embodiment Four

[0039] Please refer to Figure 1 、 Figure 2 and Figure 4 , this embodiment includes all the above embodiments, and further includes: the auxiliary fixing unit 9 includes a mounting frame 16 fixedly installed on the ground 10. A plurality of telescopic devices 17 are fixedly installed on the mounting frame 16. The telescopic end of each telescopic device 17 is provided with a pressing plate 18. A plug-in block 19 is fixedly connected to the side surface of the pressing plate 18. A plug-in slot 20 adapted to the plug-in block 19 is opened at the telescopic end of the telescopic device 17.

[0040] Specific implementation manner in this embodiment: When connecting two outer protection cylinders 1 or two inner protection cylinders 2, by starting a plurality of telescopic devices 17, the telescopic ends of the telescopic devices 17 drive the pressing plates 18 to move, pressing and fixing the outer protection cylinder 1 or the inner protection cylinder 2. And the pressing plate 18 can be replaced through the cooperation of the plug-in block 19 and the plug-in slot 20. According to the need to fix the outer protection cylinder 1 or the inner protection cylinder 2, select a suitable pressing plate 18.

[0041] Among them, the telescopic device 17 above can be purchased in the market. It belongs to a mature technology and has been fully disclosed. Therefore, it is not repeated in the specification. The telescopic device 17 is equipped with a power connection line, and it is electrically connected to the external main controller and 220V phase voltage (or connected to an external hydraulic station through a pipeline) through the power cord. And the main controller can be a conventional known device such as a computer that plays a control role.

[0042] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A safety protection device for pile foundation construction in a karst area near residential houses, comprising a protective outer cylinder (1) and a protective inner cylinder (2) adapted to the pile hole on the ground (10). A plurality of through holes (3) are formed in the side surface of the protective outer cylinder (1), and it is characterized in that, On the inner side walls of the upper ends of the protective outer cylinder (1) and the protective inner cylinder (2), a plurality of opening grooves (5) are provided. A connecting plate (4) is arranged in the opening grooves (5). On the upper side surface of the connecting plate (4), a clamping platform (15) is fixedly connected. On the inner side walls of the lower ends of the protective outer cylinder (1) and the protective inner cylinder (2), clamping grooves (6) adapted to the clamping platform (15) are provided. At the lower ends of the protective outer cylinder (1) and the protective inner cylinder (2), guiding angles (7) adapted to the clamping platform (15) are provided. The connecting plate (4) is elastic. A positioning unit (8) is arranged between the protective outer cylinder (1) and the protective inner cylinder (2). An auxiliary fixing unit (9) for assisting in connecting the protective outer cylinder (1) and the protective inner cylinder (2) is also provided on the ground (10).

2. The safety protection device for pile foundation construction in a karst area adjacent to a residential house according to claim 1, wherein On the sides of the protective outer cylinder (1) and the protective inner cylinder (2), stepped holes (11) communicating with the opening grooves (5) are provided. A limiting bolt (12) with one end threadedly connected to the connecting plate (4) is inserted through the stepped holes (11).

3. The safety protection device for pile foundation construction in karst area near residential houses according to claim 2, characterized in that, The positioning unit (8) includes an auxiliary bracket (13) adapted to the stepped hole (11) on the side of the protective inner cylinder (2). The limiting bolt (12) is used to install the auxiliary bracket (13) at the same time. One end of the auxiliary bracket (13) away from the protective inner cylinder (2) is rotatably connected with an auxiliary wheel (14). The side surface of the auxiliary wheel (14) abuts against the inner side wall of the protective outer cylinder (1).

4. A safety protection device for pile foundation construction in a karst area adjacent to a residential house according to claim 1, characterized in that, The auxiliary fixing unit (9) includes a mounting frame (16) fixedly installed on the ground (10). A plurality of telescopic devices (17) are fixedly installed on the mounting frame (16). The telescopic end of each telescopic device (17) is provided with a pressing plate (18).

5. The safety protection device for pile foundation construction in karst area near residential buildings according to claim 4, wherein, On the side surface of the pressing plate (18), a plug-in block (19) is fixedly connected. A plug-in groove (20) adapted to the plug-in block (19) is provided at the telescopic end of the telescopic device (17).

6. The safety protection device for pile foundation construction in karst area adjacent to residential houses according to claim 1, characterized in that, At the lower end of the connecting plate (4), a limiting block (21) is fixedly connected. On the opposite side walls in the opening groove (5), limiting grooves (22) adapted to the limiting block (21) are provided.

7. A safety protection device for pile foundation construction in a karst area adjacent to a residential house according to claim 1, characterized in that, On the upper end of the connecting plate (4), an inclined angle adapted to the guiding angle (7) is provided.

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