A pile casing device for construction of a mucky soil cast-in-place pile

Abstract

This utility model provides a casing device for silty soil cast-in-place pile construction. It is characterized by belonging to the field of casing technology, comprising a main cylinder, a fixing seat fitted on the top of the main cylinder, guide blocks at the four corners of the inner wall of the fixing seat, guide grooves at the four corners of the top of the main cylinder, guide blocks inserted into the guide grooves, main fixing columns at the inner sides of the four corners of the fixing seat, main ground nails inserted into the main fixing columns, a baffle sleeve in the middle of the main ground nail, and a locking nut threadedly connected to the outer wall of the baffle sleeve, the locking nut threadedly connected to the main fixing column. This utility model provides a casing device for silty soil cast-in-place pile construction, characterized by inserting auxiliary ground nails into the upper and lower guide cylinders at the top of the main ground nails, inserting one end of the auxiliary ground nail into the ground, installing the auxiliary nut into the upper and lower guide cylinders, and tightening the side wall of the auxiliary ground nail to fix its position and enhance the stability of the main ground nail.

Description

Technical Field

[0001] This utility model belongs to the field of casing technology, specifically relating to a casing device for silty soil cast-in-place pile construction. Background Technology

[0002] Existing casings cannot maintain a continuous vertical angle when entering bored piles. During underground installation, excessive tilting of the casing can lead to pile deviation, affecting the pile formation effect. Stress during drilling or grouting can cause the casing to move and deviate, making it impossible to guarantee that the casing will remain vertical throughout the pile construction process. The "Casing Device for Bored Piles in Silt Soil" disclosed in application number "202321850337.2" represents an increasingly mature technology. It uses a positioning casing in conjunction with a grouting casing for double-casing pile formation. The positioning casing is fixed by pre-embedded and fixing rings and bolts. Increasing the contact area between the positioning casing and the ground surface improves the stability of the positioning casing installation. When the grouting casing is installed through the positioning casing, it maintains the verticality of the grouting casing during continuous burial, avoiding the instability of silty soil that could cause the grouting casing to tilt and affect the grouting pile formation effect. However, this device also has the following defects: In actual use, when using the positioning casing in conjunction with the grouting casing for double-casing grouting pile formation, the connection of the screw is not firm enough when fixing the screw. At the same time, when the screw is inserted deep into the ground, the fixing point of the screw lacks a support structure, resulting in poor ground grip. Utility Model Content

[0003] The purpose of this utility model is to provide a casing device for the construction of silty soil cast-in-place piles, which aims to solve the problems in the prior art where the connection of the screw is not firm enough when fixing the screw, and the screw fixing point lacks a support structure after being inserted deep into the ground, resulting in poor ground grip and lack of support structure after the screw is inserted into the ground.

[0004] To achieve the above objectives, this utility model provides the following technical solution: It includes a main cylinder body, a fixing seat fitted on the top of the main cylinder body, guide blocks at the four corners of the inner wall of the fixing seat, guide grooves at the four corners of the top of the main cylinder body, the guide blocks being inserted into the guide grooves, main fixing posts at the inner sides of the four corners of the fixing seat, main grounding nails inserted into the main fixing posts, a baffle sleeve in the middle of the main grounding nail, a locking nut threadedly connected to the outer wall of the baffle sleeve, and the locking nut being threadedly connected to the main fixing post.

[0005] In an embodiment of the casing device for silty soil cast-in-place pile construction of this utility model, an upper guide tube is embedded at the top of the main ground nail, and an auxiliary ground nail is inserted and connected inside the upper guide tube. Lower guide tubes are embedded on the outer sides of the four corners of the fixing seat, and the auxiliary ground nails are inserted and connected inside the lower guide tubes.

[0006] In this solution, before use, the fixing base is placed in the drilled hole, the main ground nail is inserted into the main fixing post, and the fixing base is limited. After the main ground nail is inserted into the ground, the auxiliary ground nail is inserted into the upper and lower guide cylinders at the top of the main ground nail, and one end of the auxiliary ground nail is inserted into the ground. The auxiliary ground nail forms a second support point and forms a support structure with the main ground nail, thereby improving the stability of the main ground nail.

[0007] In an embodiment of the casing device for silty soil cast-in-place pile construction of this utility model, the two ends of the upper guide cylinder and one end of the lower guide cylinder are threadedly connected to auxiliary nuts, and the auxiliary nuts are threadedly connected to the two ends of the auxiliary ground nail.

[0008] In this solution, after the auxiliary ground nail is installed and the auxiliary nut passes through the upper and lower guide cylinders, the auxiliary nut is installed inside the upper and lower guide cylinders and the side wall of the auxiliary ground nail is tightened to fix the position of the auxiliary ground nail.

[0009] In an embodiment of the casing device for silty soil pile construction of this utility model, the bottom side of the locking nut is provided with an anti-slip pad.

[0010] In this solution, after the main ground spike is installed, the baffle sleeve abuts against the locking nut, and the locking nut is installed into the main fixing post. The anti-slip pad is used to abut against the top side of the main fixing post to prevent the locking nut from slipping and to improve the stability of the main ground spike after installation.

[0011] In an embodiment of the casing device for silty soil pile construction of this utility model, a ceiling seat is provided on the top side of the main casing, and lifting holes are provided on both sides of the ceiling seat.

[0012] In this design, the lifting rope is installed inside the lifting hole to facilitate the lifting and installation of the main cylinder.

[0013] In an embodiment of the casing device for silty soil pile construction of this utility model, a first mounting hole is provided in the middle of the guide groove, and a second mounting hole is provided in the middle of the guide block. The first mounting hole and the second mounting hole are connected by bolt threads.

[0014] In this solution, when installing the main cylinder, the fixing base is fixed in the designated position, the guide groove on the main cylinder is aligned with the guide block, and the guide block is slid into the guide groove to avoid the position of the main cylinder shifting during the installation process.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1) By placing the fixing base in the drilled hole, installing the locking nut into the main fixing post, and using the anti-slip pad to hold the top side of the main fixing post to prevent the locking nut from slipping, the stability of the main ground nail after installation is improved. The auxiliary ground nail is inserted into the upper and lower guide tubes at the top of the main ground nail, and one end of the auxiliary ground nail is inserted into the ground. The auxiliary nut is installed into the upper and lower guide tubes, and the side wall of the auxiliary ground nail is tightened to fix the position of the auxiliary ground nail. The auxiliary ground nail forms a second support point and forms a support structure with the main ground nail, which strengthens the stability of the main ground nail.

[0017] 2) By aligning the guide groove on the main cylinder with the guide block, the guide block is slid into the guide groove to prevent the position of the main cylinder from shifting during installation. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the fixing base structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the main ground nail structure of this utility model.

[0022] In the diagram: 1. Main cylinder; 2. Fixing base; 3. Guide block; 4. Guide groove; 5. Main fixing column; 6. Main ground nail; 7. Baffle sleeve; 8. Locking nut; 9. Upper guide cylinder; 10. Auxiliary ground nail; 11. Lower guide cylinder; 12. Auxiliary nut; 13. Anti-slip pad; 14. Ceiling bracket; 15. Lifting hole; 16. First mounting hole; 17. Second mounting hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-3The present invention provides the following technical solution: a casing device for silty soil pile construction, comprising a main cylinder 1, a fixing seat 2 sleeved on the top of the main cylinder 1, guide blocks 3 at the four corners of the inner wall of the fixing seat 2, guide grooves 4 at the four corners of the top of the main cylinder 1, the guide blocks 3 being inserted into the guide grooves 4, main fixing columns 5 at the inner sides of the four corners of the fixing seat 2, main ground nails 6 being inserted into the main fixing columns 5, a baffle sleeve 7 in the middle of the main ground nail 6, a locking nut 8 threadedly connected to the outer wall of the baffle sleeve 7, and the locking nut 8 being threadedly connected to the main fixing column 5.

[0025] In a specific embodiment of a casing device for silty soil cast-in-place pile construction, please refer to... Figure 2-3 The top of the main ground nail 6 is embedded with an upper guide cylinder 9, and an auxiliary ground nail 10 is inserted and connected inside the upper guide cylinder 9. The four corners of the fixing base 2 are embedded with lower guide cylinders 11, and the auxiliary ground nails 10 are inserted and connected inside the lower guide cylinders 11.

[0026] Please see Figure 2-3 Before use, place the fixing base 2 in the drilled hole, insert the main ground nail 6 into the main fixing post 5 to limit the fixing base 2. After the main ground nail 6 is inserted into the ground, insert the auxiliary ground nail 10 into the upper guide cylinder 9 and lower guide cylinder 11 at the top of the main ground nail 6, and insert one end of the auxiliary ground nail 10 into the ground. The auxiliary ground nail 10 forms a second support point and forms a support structure with the main ground nail 6 to improve the stability of the main ground nail 6.

[0027] In a specific embodiment of a casing device for silty soil cast-in-place pile construction, please refer to... Figure 2-3 The upper guide cylinder 9 is threaded at both ends and one end of the lower guide cylinder 11 with auxiliary nuts 12. The auxiliary nuts 12 are threaded at both ends of the auxiliary ground nail 10.

[0028] Please see Figure 2-3 When installing the auxiliary ground nail 10, after the auxiliary nut 12 passes through the upper guide cylinder 9 and the lower guide cylinder 11, the auxiliary nut 12 is installed into the upper guide cylinder 9 and the lower guide cylinder 11, and the side wall of the auxiliary ground nail 10 is tightened to fix the position of the auxiliary ground nail 10.

[0029] In a specific embodiment of a casing device for silty soil cast-in-place pile construction, please refer to... Figure 3 The bottom edge of the locking nut 8 is provided with an anti-slip pad 13.

[0030] Please see Figure 3 After the main ground nail 6 is installed, the baffle sleeve 7 presses against the locking nut 8 and installs the locking nut 8 into the main fixing post 5. The anti-slip pad 13 is used to press against the top side of the main fixing post 5 to prevent the locking nut 8 from slipping and to improve the stability of the main ground nail 6 after installation.

[0031] In a specific embodiment of a casing device for silty soil cast-in-place pile construction, please refer to... Figure 1 The top side of the main cylinder 1 is provided with a ceiling bracket 14, and the ceiling bracket 14 has hoisting holes 15 on both sides.

[0032] Please see Figure 1 Install the lifting rope inside the lifting hole 15 to facilitate the lifting and installation of the main cylinder 1.

[0033] In a specific embodiment of a casing device for silty soil cast-in-place pile construction, please refer to... Figure 2 The guide groove 4 has a first mounting hole 16 in the middle, and the guide block 3 has a second mounting hole 17 in the middle. The first mounting hole 16 and the second mounting hole 17 are connected by bolt threads.

[0034] Please see Figure 2 When installing the main cylinder 1, fix the mounting base 2 in the designated position, align the guide groove 4 on the main cylinder 1 with the guide block 3, slide the guide block 3 into the guide groove 4 to avoid the position of the main cylinder 1 shifting during installation, and install the bolts into the first mounting hole 16 and the second mounting hole 17.

[0035] This utility model provides a casing device for the construction of silty soil cast-in-place piles. The specific usage is as follows: Place the fixing base 2 at the drilled pit, insert the main ground nail 6 into the main fixing column 5 to limit the fixing base 2. After the main ground nail 6 is inserted into the ground, insert the auxiliary ground nail 10 into the upper guide cylinder 9 and lower guide cylinder 11 at the top of the main ground nail 6, and insert one end of the auxiliary ground nail 10 into the ground. Use the auxiliary nut 12 to install it into the upper guide cylinder 9 and lower guide cylinder 11, and tighten the side wall of the auxiliary ground nail 10. The position is fixed, and the auxiliary ground nail 10 forms a second support point and forms a support structure with the main ground nail 6. The baffle sleeve 7 is used to hold the locking nut 8 and install the locking nut 8 into the main fixing post 5. The anti-slip pad 13 is used to hold the top side of the main fixing post 5 to prevent the locking nut 8 from slipping and improve the stability of the main ground nail 6 after installation. When installing the main cylinder 1, the fixing seat 2 is fixed in the designated position. The guide groove 4 on the main cylinder 1 is aligned with the guide block 3 and the guide block 3 is slid into the guide groove 4 to prevent the position of the main cylinder 1 from shifting during the installation process.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A casing device for silty soil cast-in-place pile construction, comprising a main casing (1), characterized in that: The main cylinder (1) is fitted with a fixed seat (2) on the top. The fixed seat (2) has guide blocks (3) at the four corners of its inner wall. The main cylinder (1) has guide grooves (4) at the four corners of its top. The guide blocks (3) are inserted into the guide grooves (4). The fixed seat (2) has main fixing posts (5) on the inner side of its four corners. The main fixing posts (5) have main ground nails (6) inserted into them. The main ground nails (6) have baffle sleeves (7) in the middle. The baffle sleeves (7) have locking nuts (8) threadedly connected to their outer walls. The locking nuts (8) are threadedly connected to the main fixing posts (5).

2. The casing device for construction of a slurry soil cast-in-place pile according to claim 1, characterized in that: The top of the main ground nail (6) is fitted with an upper guide cylinder (9), and an auxiliary ground nail (10) is inserted and connected inside the upper guide cylinder (9). The four corners of the fixing seat (2) are fitted with lower guide cylinders (11), and the auxiliary ground nails (10) are inserted and connected inside the lower guide cylinders (11).

3. The casing device for construction of a slurry soil cast-in-place pile according to claim 2, characterized in that: The upper guide cylinder (9) is threaded to one end of the lower guide cylinder (11) at both ends, and the auxiliary nuts (12) are threaded to both ends of the auxiliary ground nail (10).

4. The casing device for construction of a muddy soil cast-in-place pile according to claim 1, characterized in that: The bottom side of the locking nut (8) is provided with an anti-slip pad (13).

5. The casing device for construction of a muddy soil cast-in-place pile according to claim 1, characterized in that: The main cylinder (1) is provided with a ceiling seat (14) on the top side, and there are hoisting holes (15) on both sides of the ceiling seat (14).

6. The casing device for construction of a muddy soil cast-in-place pile according to claim 1, characterized in that: The guide groove (4) has a first mounting hole (16) in the middle, and the guide block (3) has a second mounting hole (17) in the middle. The first mounting hole (16) and the second mounting hole (17) are connected by bolt threads.

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