A casing for rotary drilling cast-in-place pile construction

Abstract

The application relates to a casing for rotary drilling bored pile construction and relates to the technical field of casings for rotary drilling bored pile construction, which comprises a base, the top of the base is provided with a plurality of cylinder bodies, the top of each cylinder body and the base is provided with a second fixing groove, and the bottom of each cylinder body is fixedly connected with a second inserting plate. Two adjacent cylinder bodies are inserted in the application, in the process, the second inserting plate is inserted into the second fixing groove in the adjacent cylinder body, in the process, the connecting plate is slid into the corresponding sliding groove, the two cylinder bodies can be sealed through the setting of the second waterproof gasket ring, the two adjacent cylinder bodies can be quickly installed through the insertion between the inserting rod and the corresponding first inserting groove, and the effect that the device can quickly disassemble and rigidly connect the adjacent cylinder bodies through the setting of the second inserting plate, the connecting plate and the inserting rod is achieved.

Description

Technical Field

[0001] This application relates to the field of casing technology for rotary drilled cast-in-place pile construction, and in particular to a casing for rotary drilled cast-in-place pile construction. Background Technology

[0002] Cast-in-place piles have advantages such as no vibration during construction, no soil displacement, low noise, and suitability for use in densely built-up urban areas. They are widely used in construction. In the construction of cast-in-place piles, the casing can stabilize the hole wall, prevent hole collapse, isolate surface water, guide the drill bit, and fix the pile position.

[0003] An existing patent (publication number: CN218373815U) discloses a casing for rotary drilling and grouting pile construction, comprising a casing with multiple mounting plates evenly spaced at the top outer surface. A mounting hole is provided on the side of the casing top outer surface near the mounting plate. A first positioning bracket is provided at the top of the mounting plate, and the bottom end of the first positioning bracket is fixedly connected to the top of the mounting plate. This invention allows for the disassembly of the mounting plates by removing the limiting bolts, facilitating the vertical adjustment of the positions of the first positioning bracket and the lifting ring. When the lifting ring is above the mounting plate, it facilitates the user's hoisting and transport of the invention. When the first positioning bracket is above the mounting plate, it can be connected to a second positioning bracket at the bottom of the adjacent casing using the cooperation of the connecting bracket and the fastening bolts, thus facilitating the assembly of two casings.

[0004] The existing device allows for the disassembly of the mounting plate by removing the limiting bolts, facilitating the vertical adjustment of the positions of the first positioning bracket and the lifting ring. When the lifting ring is above the mounting plate, it facilitates the user's hoisting and transportation of the device. When the first positioning bracket is above the mounting plate, it can be connected to the second positioning bracket at the bottom of the adjacent casing by means of the connecting bracket and fastening bolts, thus facilitating the assembly of the two casings. The overall structure, through the position adjustment of the first positioning bracket and the lifting ring, facilitates the user's hoisting, transportation, and assembly. However, this device suffers from insufficient rigidity at the connection points, making it prone to tilting during vibration and sinking. Furthermore, the gap between the casing and the borehole wall cannot be effectively filled, resulting in a high risk of groundwater leakage. Utility Model Content

[0005] The purpose of this application is to provide a casing for rotary drilling and grouting pile construction, which has the advantages of providing stable support and being easy to disassemble and assemble, and solves the problem of insufficient rigidity of the connection parts of existing devices.

[0006] The casing for rotary drilling and grouting pile construction provided in this application adopts the following technical solution: it includes a base, and a plurality of cylinders are provided above the base. Each cylinder and the top of the base are provided with a second fixing groove. A second insert plate is fixedly connected to the bottom of each cylinder. The outer surface of each second insert plate is inserted into the corresponding second fixing groove. A second waterproof gasket is inserted into the inner wall of each second fixing groove. A plurality of sliding grooves are provided on the outer surface of each cylinder. A plurality of connecting plates are fixedly connected to the outer surface of each cylinder. The outer surface of each connecting plate is slidably connected to the corresponding sliding groove. A first slot is provided on the inner wall of each sliding groove. A plug rod is slidably connected to the inner wall of each connecting plate. The outer surface of each plug rod is inserted into the corresponding first slot.

[0007] By adopting the above technical solution, the base, as the basic component of the entire casing, has a second fixing groove at its top for connecting the lowest cylinder body, serving as a load-bearing and positioning element. The cylinder body has a modular main structure, and its quantity can be increased or decreased according to construction needs to adjust the total length of the casing. Each cylinder body has connecting structures at both ends. A second insert plate is fixedly connected to the bottom of the cylinder body for insertion into the second fixing groove of the base or another cylinder body component below, achieving axial positioning. The second fixing groove at its top is used to receive the second insert plate of the upper cylinder body, forming a multi-layer splicing structure. When the second insert plate is inserted into the second fixing groove, the second waterproof gasket is squeezed, which can effectively enhance the sealing of the connection and prevent mud, groundwater and other substances from seeping in from the splice. It is especially suitable for humid or underwater construction environments. When adjacent cylinders are spliced, the connecting plate of the upper cylinder can slide along the sliding groove of the lower cylinder to play a circumferential positioning role and prevent the cylinder from twisting or misaligning during splicing. After the connecting plate slides into the sliding groove and is in place, the insert rod is inserted into the corresponding first slot to achieve radial fixation of adjacent cylinders, further enhancing the overall stability after splicing and preventing the cylinder from separating under stress.

[0008] Preferably, the top of the base is provided with a first fixing groove, the inner wall of the first fixing groove is fitted with a first waterproof gasket, and the inner wall of the first fixing groove is inserted into a corresponding second insert plate.

[0009] By adopting the above technical solution, the first waterproof gasket is inserted into the inner wall of the first fixing groove. When the second insert plate of the cylinder is inserted, the first waterproof gasket is squeezed between the insert plate and the groove wall, forming a sealing layer at the connection between the base and the first cylinder.

[0010] Preferably, the outer surface of the base is provided with a plurality of guide rail grooves, the inner wall of each guide rail groove is slidably connected to the corresponding connecting plate, the inner wall of each guide rail groove is provided with a second slot, and the inner wall of each second slot is inserted into the corresponding plug rod.

[0011] By adopting the above technical solution, the guide rail groove is opened on the outer surface of the base, and the number matches the connecting plate on the outer surface of the cylinder. When the second insert plate at the bottom of the first cylinder is inserted into the first fixing groove of the base, the connecting plate on the cylinder can slide along the guide rail groove of the base to achieve circumferential positioning of the base and the first cylinder, thereby preventing relative rotation between the two after splicing, especially during drilling vibration, to avoid loosening of the connection. When the connecting plate slides along the guide rail groove to the preset position, the insert rod in the connecting plate can be inserted into the second slot to form radial locking between the base and the first cylinder.

[0012] Preferably, one of the cylinders is provided with a cover ring on its upper part, and a number of elastic retaining plates are fixedly connected to the outer surface of the cover ring.

[0013] By adopting the above technical solution, the cover ring is set at the top of the uppermost cylinder as a top sealing and protective component of the protective cylinder. The elastic clamping plate is fixedly connected to the outer surface of the cover ring, and the number of plates matches the position of the sliding groove or connecting plate on the outer surface of the cylinder. The core is to achieve quick assembly and disassembly of the cover ring and the cylinder through elastic deformation.

[0014] Preferably, a first insert plate is fixedly connected to the bottom end of the cover ring, and the outer surface of the first insert plate is inserted into the corresponding second fixing groove.

[0015] By adopting the above technical solution, the first insert plate is functionally fixedly connected to the bottom end of the cover ring, and its external dimensions match the second fixing groove at the top of the cylinder. When the cover ring is installed on the cylinder, the first insert plate is inserted into the second fixing groove to achieve axial positioning and initial support and fixation of the cover ring and the cylinder.

[0016] Preferably, a triangular retaining plate is fixedly connected to the inner wall of each slide groove, the outer surface of each triangular retaining plate is slidably connected to the corresponding slide groove, and the outer surface of each triangular retaining plate is engaged with the corresponding elastic retaining plate.

[0017] By adopting the above technical solution, when the elastic plate slides along the groove, the inclined surface of the triangular plate can guide the elastic plate to smoothly enter the locking position. After the elastic plate is locked in, the vertical surface or sharp edge of the triangular plate can prevent it from sliding in the opposite direction, forming a one-way locking effect. When the elastic plate of the cover ring slides into the groove of the cylinder, the elastic plate is squeezed by the inclined surface of the triangular plate and undergoes elastic deformation, bending outward. After reaching the preset position, the elastic plate returns to its original shape.

[0018] Preferably, each of the insert rods has a spring sleeved on its outer surface, and one end of each spring away from the corresponding cylinder is fixedly connected to the corresponding connecting plate, while the other end is fixedly connected to the corresponding insert rod.

[0019] By adopting the above technical solution, adjacent parts can be unlocked by manually pulling the plug rod. After being released, the spring automatically resets and locks, greatly improving splicing efficiency.

[0020] Preferably, each of the connecting plates has a slot on its outer surface, each of the inserts has two connecting rods rotatably connected to its inner wall, each of the connecting rods has a support rod fixedly connected to both ends, each of the support rods has an outer surface that is slidably connected to the corresponding connecting plate, and each of the support rods has an outer surface that engages with the corresponding slot.

[0021] By adopting the above technical solution, the support rod is squeezed to move in opposite directions along the corresponding connecting plate. At this time, the support rod will squeeze the corresponding insertion rod to slide into the corresponding connecting plate. The spring will be compressed until the support rod is locked in the corresponding slot. This allows the insertion rod to slide out from the corresponding first slot and second slot, which facilitates disassembly and assembly.

[0022] In summary, this application includes at least one of the following beneficial technical effects: This casing for rotary drilling and grouting pile construction comprises a casing body, a base, a second fixing groove, a second insert plate, a second waterproof gasket, a sliding groove, a connecting plate, a first slot, and an insert rod. Two adjacent casing bodies are connected by insertion. During this process, the second insert plate is inserted into the second fixing groove within the adjacent casing body, and the connecting plate slides along the corresponding sliding groove. The second waterproof gasket seals the two casing bodies, and the insert rod connects to the corresponding first slot for rapid installation of the two adjacent casing bodies. This device achieves the effect of quickly assembling and disassembling adjacent casing bodies and enhancing rigid connection through the second insert plate, connecting plate, and insert rod. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the base structure of this application; Figure 3 This is a schematic diagram of the cylindrical structure of this application; Figure 4 This is a schematic diagram of the internal structure of the connecting plate in this application; Figure 5 This is a schematic diagram of the cover ring structure of this application.

[0024] In the picture: 1. Base; 2. Cylinder; 3. Cover ring; 4. First fixing groove; 5. First waterproof gasket; 6. Guide rail groove; 7. Second slot; 8. Second insert plate; 9. Slide groove; 10. First slot; 11. Elastic retaining plate; 12. Connecting plate; 13. First insert plate; 14. Second waterproof gasket; 15. Second fixing groove; 16. Triangular retaining plate; 17. Slot; 18. Insert rod; 19. Spring; 20. Connecting rod; 21. Support rod. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0026] Example 1: A casing for rotary drilling and grouting pile construction, referring to... Figure 2 , Figure 3 , Figure 4 The system includes a base 1, with several cylindrical bodies 2 on top of the base 1. Each cylindrical body 2 and the top of the base 1 have a second fixing groove 15. A second insert plate 8 is fixedly connected to the bottom of each cylindrical body 2. The outer surface of each second insert plate 8 is inserted into the corresponding second fixing groove 15. A second waterproof gasket 14 is inserted into the inner wall of each second fixing groove 15. Several sliding grooves 9 are formed on the outer surface of each cylindrical body 2. Several connecting plates 12 are fixedly connected to the outer surface of each cylindrical body 2. The outer surface of each connecting plate 12 is slidably connected to the corresponding sliding groove 9. A first slot 10 is formed on the inner wall of each sliding groove 9. An insert rod 18 is slidably connected to the inner wall of each connecting plate 12. The outer surface of each insert rod 18 is inserted into the corresponding first slot 10. The base 1, as the basic component of the entire protective casing, has a second fixing groove 15 at its top for connecting the lowest cylindrical body 2, serving as a load-bearing and positioning element. The cylindrical bodies 2 have a modular main structure, and their number can be increased or decreased according to construction needs. The total length of the protective casing is adjusted, and each cylinder 2 has a connecting structure at both ends. The bottom end of the cylinder 2 is fixedly connected to the second insert plate 8, which is used to insert into the second fixing groove 15 of the base 1 or the lower part of another cylinder 2 to achieve axial positioning. The second fixing groove 15 opened at the top end is used to receive the second insert plate 8 of the upper cylinder 2 to form a multi-layer splice. When the second insert plate 8 is inserted into the second fixing groove 15, the second waterproof gasket 14 is squeezed, which can effectively enhance the sealing of the connection and prevent mud, groundwater and other substances from seeping in from the splice seam. It is especially suitable for humid or underwater construction environments. When adjacent cylinders 2 are spliced, the connecting plate 12 of the upper cylinder 2 can slide along the sliding groove 9 of the lower cylinder 2 to play a circumferential positioning role and prevent the cylinder 2 from twisting or misaligning during splicing. When the connecting plate 12 slides into the sliding groove 9 and is in place, the insert rod 18 is inserted into the corresponding first slot 10 to achieve radial fixation of adjacent cylinders 2, further enhancing the overall stability after splicing and preventing the cylinder 2 from separating under force.

[0027] Example 2: A casing for rotary drilling and grouting pile construction; please refer to [link / reference]. Figure 1 , Figure 2The top of the base 1 is provided with a first fixing groove 4. The inner wall of the first fixing groove 4 is fitted with a first waterproof gasket 5. The inner wall of the first fixing groove 4 is inserted into the corresponding second insert plate 8. The first waterproof gasket 5 is inserted into the inner wall of the first fixing groove 4. When the second insert plate 8 of the cylinder 2 is inserted, the first waterproof gasket 5 is squeezed between the insert plate and the groove wall, forming a sealing layer at the connection between the base 1 and the first cylinder 2.

[0028] Please see Figure 2 , Figure 3 The outer surface of the base 1 is provided with several guide rail grooves 6. The inner wall of each guide rail groove 6 is slidably connected to the corresponding connecting plate 12. The inner wall of each guide rail groove 6 is provided with a second slot 7. The inner wall of each second slot 7 is inserted into the corresponding insert rod 18. The guide rail grooves 6 are provided on the outer surface of the base 1, and the number matches the connecting plate 12 on the outer surface of the cylinder 2. When the second insert plate 8 at the bottom of the first cylinder 2 is inserted into the first fixing groove 4 of the base 1, the connecting plate 12 on the cylinder 2 can slide along the guide rail groove 6 of the base 1 to achieve circumferential positioning of the base 1 and the first cylinder 2, thereby preventing relative rotation between the two after splicing, especially during drilling vibration, to avoid loosening of the connection. When the connecting plate 12 slides along the guide rail groove 6 to the preset position, the insert rod 18 in the connecting plate 12 can be inserted into the second slot 7 to form a radial lock between the base 1 and the first cylinder 2.

[0029] Please see Figure 1 , Figure 3 , Figure 5 One of the cylinders 2 has a cover ring 3 on its upper part. Several elastic plates 11 are fixedly connected to the outer surface of the cover ring 3. The cover ring 3 is located at the top of the uppermost cylinder 2 as a top sealing and protective component for the protective cylinder. The elastic plates 11 are fixedly connected to the outer surface of the cover ring 3. The number of them matches the position of the sliding groove 9 or connecting plate 12 on the outer surface of the cylinder 2. The core is to achieve quick assembly and disassembly of the cover ring 3 and the cylinder 2 through elastic deformation.

[0030] Please see Figure 3 , Figure 5 The bottom end of the cover ring 3 is fixedly connected to a first insert plate 13. The outer surface of the first insert plate 13 is inserted into the corresponding second fixing groove 15. The function of the first insert plate 13 is to be fixedly connected to the bottom end of the cover ring 3. Its external dimensions match the second fixing groove 15 at the top of the cylinder 2. When the cover ring 3 is installed on the cylinder 2, the first insert plate 13 is inserted into the second fixing groove 15 to achieve axial positioning and initial support fixation of the cover ring 3 and the cylinder 2.

[0031] Please see Figure 2 , Figure 3 , Figure 5Each groove 9 has a triangular locking plate 16 fixedly connected to its inner wall. The outer surface of each triangular locking plate 16 is slidably connected to the corresponding groove 9. The outer surface of each triangular locking plate 16 is engaged with the corresponding elastic locking plate 11. When the elastic locking plate 11 slides along the groove 9, the inclined surface of the triangular locking plate 16 can guide the elastic locking plate 11 to smoothly enter the engaging position. After the elastic locking plate 11 is engaged, the vertical surface or sharp edge of the triangular locking plate 16 can prevent it from sliding in the opposite direction, forming a one-way locking effect. When the elastic locking plate 11 of the cover ring 3 slides into the groove 9 of the cylinder 2, the elastic locking plate 11 is squeezed by the inclined surface of the triangular locking plate 16 and undergoes elastic deformation, bending outward. After reaching the preset position, the elastic locking plate 11 returns to its original shape.

[0032] Please see Figure 4 Each insert rod 18 has a spring 19 fitted on its outer surface. One end of each spring 19 away from the corresponding cylinder 2 is fixedly connected to the corresponding connecting plate 12, and the other end is fixedly connected to the corresponding insert rod 18. The adjacent insert rods can be unlocked by manually pulling the insert rod 18. After being released, the spring 19 automatically resets and locks, greatly improving splicing efficiency.

[0033] Please see Figure 4 Each connecting plate 12 has a slot 17 on its outer surface. Each insert rod 18 has two connecting rods 20 rotatably connected to its inner wall. Each connecting rod 20 has a support rod 21 fixedly connected to both ends. The outer surface of each support rod 21 is slidably connected to the corresponding connecting plate 12. The outer surface of each support rod 21 is engaged with the corresponding slot 17. By squeezing the support rod 21, it moves along the corresponding connecting plate 12 in opposite directions. At this time, the support rod 21 will squeeze the corresponding insert rod 18, causing it to slide into the corresponding connecting plate 12. The spring 19 will be compressed until the support rod 21 is engaged in the corresponding slot 17. This allows the insert rod 18 to slide out from the corresponding first slot 10 and second slot 7, which facilitates disassembly and assembly.

[0034] The implementation principle of this application embodiment is as follows: First, the cylinder 2 is inserted along the base 1 and the two cylinders 2 are installed. During this process, the first insert plate 13 will be inserted into the adjacent first fixing groove 4 or second fixing groove 15. By installing the first waterproof gasket 5 and the second waterproof gasket 14 in the corresponding first fixing groove 4 and second fixing groove 15 before installation, the first waterproof gasket 5 and the second waterproof gasket 14 can ensure that the splice seam of the entire protective cylinder from bottom to top is in a sealed state. At this time, by squeezing the support rod 21, it is made to be engaged in the corresponding slot 17. Thus, the support rod 21 can squeeze the corresponding insert rod 18 to slide into the connecting plate 12. At this time, the spring 19 will... When the connecting plate 12 is compressed, the insertion rod 18 is aligned with the corresponding first slot 10 and second slot 7 on the same central axis. By moving the support rod 21, the spring 19 will push the corresponding insertion rod 18 into the corresponding first slot 10 and second slot 7 under its rebound force. This allows for quick installation and fixation between the cylinders 2 and between the cylinder 2 and the base 1. By inserting the cover ring 3 into the uppermost cylinder 2, the first insertion plate 13 will be inserted into the corresponding second fixing groove 15. During this process, the elastic locking plate 11 will be inserted into the corresponding sliding groove 9, and the cover ring 3 can be quickly fixed by the insertion between the elastic locking plate 11 and the corresponding triangular locking plate 16.

[0035] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A casing for rotary drilling and grouting pile construction, comprising a base (1), characterized in that: The base (1) is provided with several cylindrical bodies (2) above it. Each cylindrical body (2) and the top of the base (1) are provided with a second fixing groove (15). Each cylindrical body (2) is fixedly connected to a second insert plate (8) at its bottom end. The outer surface of each second insert plate (8) is inserted into the corresponding second fixing groove (15). A second waterproof gasket (14) is inserted into the inner wall of each second fixing groove (15). Each cylindrical body (2) is provided with several sliding grooves (9) on its outer surface. Each cylindrical body (2) is fixedly connected with several connecting plates (12). The outer surface of each connecting plate (12) is slidably connected to the corresponding sliding groove (9). The inner wall of each sliding groove (9) is provided with a first slot (10). The inner wall of each connecting plate (12) is slidably connected with an insert rod (18). The outer surface of each insert rod (18) is inserted into the corresponding first slot (10).

2. The casing for rotary drilling and grouting pile construction according to claim 1, characterized in that: The top of the base (1) is provided with a first fixing groove (4), and the inner wall of the first fixing groove (4) is fitted with a first waterproof gasket (5). The inner wall of the first fixing groove (4) is inserted into the corresponding second insert plate (8).

3. A casing for rotary drilling and grouting pile construction according to claim 2, characterized in that: The outer surface of the base (1) is provided with a plurality of guide rail grooves (6), the inner wall of each guide rail groove (6) is slidably connected to the corresponding connecting plate (12), the inner wall of each guide rail groove (6) is provided with a second slot (7), and the inner wall of each second slot (7) is inserted into the corresponding plug rod (18).

4. A casing for rotary drilling and grouting pile construction according to claim 1, characterized in that: One of the cylinders (2) has a cover ring (3) on its upper part, and a number of elastic plates (11) are fixedly connected to the outer surface of the cover ring (3).

5. A casing for rotary drilling and grouting pile construction according to claim 4, characterized in that: The bottom end of the cover ring (3) is fixedly connected to a first insert plate (13), and the outer surface of the first insert plate (13) is inserted into the corresponding second fixing groove (15).

6. A casing for rotary drilling and grouting pile construction according to claim 1, characterized in that: Each of the slide grooves (9) has a triangular plate (16) fixedly connected to its inner wall. The outer surface of each triangular plate (16) is slidably connected to the corresponding slide groove (9). The outer surface of each triangular plate (16) is engaged with the corresponding elastic plate (11).

7. A casing for rotary drilling and grouting pile construction according to claim 3, characterized in that: Each of the insert rods (18) has a spring (19) fitted on its outer surface. One end of each spring (19) away from the corresponding cylinder (2) is fixedly connected to the corresponding connecting plate (12), and the other end is fixedly connected to the corresponding insert rod (18).

8. A casing for rotary drilling and grouting pile construction according to claim 7, characterized in that: Each of the connecting plates (12) has a slot (17) on its outer surface. Each of the insert rods (18) has two connecting rods (20) rotatably connected to its inner wall. Each of the connecting rods (20) has a support rod (21) fixedly connected to both ends. The outer surface of each support rod (21) is slidably connected to the corresponding connecting plate (12). The outer surface of each support rod (21) is engaged with the corresponding slot (17).

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