Squeezing and expanding pile forming diameter adjusting device

Abstract

The utility model discloses a diameter adjusting device for an extruded pile, which belongs to the technical field of cast-in-place piles and comprises an extruded support rod, a base rod, a rotating component used for driving a drill hole, an expanding component used for controlling the diameter of the pile and a reinforcing component used for stable operation in the extruded process. The base rod is arranged over the squeezing and expanding supporting rod, the rotating assembly is arranged at the top of the squeezing and expanding supporting rod, the expanding assembly is arranged in the squeezing and expanding supporting rod, and the reinforcing assembly is arranged on the expanding assembly. According to the squeezing and expanding pile forming diameter adjusting device, through the effect of the rotating assembly, the squeezing and expanding supporting rod rotates. And through the action of the expansion assembly, the inner wall of the drill hole is stably extruded. And through cooperative use of the first movable block, the second movable block and the sliding block, the connecting rod changes along with the change of the expansion assembly, the use stability of the expansion assembly is improved, and therefore the rigidity of the whole device is improved. In the squeezing and expanding process, the squeezing and expanding structure can better resist external loads, and deformation and vibration are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of cast-in-place piles, and specifically relates to a diameter adjusting device for squeezing and expanding piles. Background Art

[0002] In construction engineering, the construction quality of cast-in-place piles is crucial for the bearing capacity of pile foundations, and the diameter of the piles directly affects the bearing performance of cast-in-place piles. Squeezing and expanding piles is to use squeezing and expanding equipment to squeeze the soil in the borehole to form an enlarged pile end and pile body.

[0003] In the existing technology, a powerful extrusion force is generated by hydraulic equipment, and the soil around the pile hole is squeezed and rotated through devices such as squeezing and expanding arms to form an enlarged pile end and pile body. However, at the construction site with relatively complex geological conditions, it is considered inconvenient to connect the squeezing and expanding arms, which easily leads to poor structural stability. In addition, during the squeezing and expanding process, deformation and vibration occur under the influence of external loads, which not only affects the quality of pile body pouring and forming, but also results in uneven diameters of piles at different depths, reducing the bearing capacity of the piles.

[0004] For the problems in the related technology, no effective solution has been proposed yet. Content of the Utility Model

[0005] In view of the deficiencies of the above-mentioned prior art, the purpose of the present utility model is to provide a diameter adjusting device for squeezing and expanding piles, aiming to solve the problem of insufficient structural stability when it is inconvenient to connect the squeezing and expanding arms.

[0006] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] A diameter adjusting device for squeezing and expanding piles includes squeezing and expanding support rods, a base rod, a rotating assembly for driving drilling, an expanding assembly for controlling the pile diameter, and a reinforcement assembly for stable operation during the squeezing and expanding process. The base rod is arranged directly above the squeezing and expanding support rods. The rotating assembly is arranged at the top of the squeezing and expanding support rods. The expanding assembly is arranged inside the squeezing and expanding support rods. The reinforcement assembly is arranged on the expanding assembly.

[0008] The reinforcement assembly includes a first movable block. A connecting rod is fixedly connected to the bottom of the first movable block. A second movable block is fixedly connected to the bottom of the connecting rod. A slider is hinged to the second movable block.

[0009] As a further improvement of the above technical solution, the rotating assembly includes a motor fixedly connected to the bottom of the base rod. The output end of the motor is fixedly connected to a shaft rod. A disc is fixedly connected to the bottom of the shaft rod. By setting the motor, the shaft rod and the disc, it is convenient for the squeezing and expanding support rods to rotate.

[0010] As a further improvement of the above technical solution, a sleeve block is fixedly connected to the outer side wall of the shaft rod, a stabilizing rod is fixedly connected to the outer side wall of the sleeve block, and the bottom of the stabilizing rod is fixedly connected to the top of the disc. By providing the sleeve block and the stabilizing rod, the expansion support rod can rotate stably.

[0011] As a further improvement of the above technical solution, the expansion assembly includes a hydraulic rod fixedly connected to the bottom of the disc. The end of the piston rod of the hydraulic rod is fixedly connected with a U-shaped plate. The bottom of the U-shaped plate is hinged with an upper expansion rod. The first movable block is hinged on the upper expansion rod. The bottom of the upper expansion rod is hinged with a lower expansion rod. The bottom of the lower expansion rod is hinged with a bottom plate. The bottom plate is fixedly connected to the bottom of the expansion support rod. By providing the hydraulic rod, the U-shaped plate, the upper expansion rod, the lower expansion rod and the bottom plate, the diameter of the pile can be adjusted.

[0012] As a further improvement of the above technical solution, a sliding groove is formed in the lower expansion rod, and the lower expansion rod is slidably connected with a sliding block through the sliding groove. By providing the sliding groove, it is convenient for the sliding block to slide and adjust.

[0013] As a further improvement of the above technical solution, a reducing pipe is fixedly connected to the bottom of the base rod, and the motor is located inside the reducing pipe. An annular groove is formed in the bottom of the reducing pipe, and the reducing pipe is rotationally connected with an annular plate through the annular groove. The annular plate is fixedly connected to the top of the expansion support rod. By providing the reducing pipe, the annular groove and the annular plate, the rotation stability of the expansion support rod is increased.

[0014] As a further improvement of the above technical solution, reinforcing ribs are fixedly connected to the inside of the expansion support rod, and the outer circumference of the reinforcing ribs is equal to the inner circumference of the expansion support rod. By providing the reinforcing ribs, the load-bearing capacity of the expansion support rod is increased.

[0015] In summary, the technical effects and advantages of the present utility model are as follows: for this pile diameter adjusting device for expansion and extrusion, through the action of the rotation assembly, the expansion support rod rotates. Through the action of the expansion assembly, the inner wall of the drilling hole is stably extruded. Through the coordinated use of the first movable block, the second movable block and the sliding block, the connecting rod changes along with the change of the expansion assembly, increasing the stability of the use of the expansion assembly, thereby improving the stiffness of the entire device. During the expansion and extrusion process, the expansion and extrusion structure can better resist external loads, reducing deformation and vibration.

[0016] Through the operation of the hydraulic rod, the U-shaped plate moves downward accordingly. Then, through the action of the bottom plate, the upper expansion rod and the lower expansion rod change, thereby adjusting the diameter of the pile to ensure that the construction quality and bearing performance of the cast-in-place pile meet the design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 This is a schematic structural diagram of the rotating assembly of the present utility model;

[0019] Figure 3 This is a schematic structural diagram of the reinforcement assembly of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the variable-diameter pipe of the present utility model.

[0021] In the figure: 1. Extrusion and expansion support rod; 2. Base rod;

[0022] 3. Rotating assembly; 31. Motor; 32. Shaft rod; 33. Disc; 34. Sleeve block; 35. Stabilizing rod;

[0023] 4. Expansion assembly; 41. Hydraulic rod; 42. U-shaped plate; 43. Upper expansion rod; 44. Lower expansion rod; 45. Base plate;

[0024] 5. Reinforcement assembly; 51. First movable block; 52. Link rod; 53. Second movable block; 54. Slide block; 55. Slide groove;

[0025] 6. Variable-diameter pipe; 7. Annular groove; 8. Annular plate; 9. Reinforcement rib. Specific implementation manner

[0026] The present utility model provides an extrusion and expansion pile diameter adjustment device. To make the purpose, technical solution and effects of the present utility model clearer and more definite, the following further elaborates on the present utility model with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present utility model and are not used to limit the protection scope of the present utility model.

[0027] As Figures 1-3 shown, this embodiment provides a technical solution: an extrusion and expansion pile diameter adjustment device, including an extrusion and expansion support rod 1, a base rod 2, a rotating assembly 3 for driving drilling, an expansion assembly 4 for controlling the pile diameter, and a reinforcement assembly 5 for stable operation during the extrusion and expansion process. The extrusion and expansion support rod 1 and the base rod 2 are coaxial, the base rod 2 is arranged directly above the extrusion and expansion support rod 1, the rotating assembly 3 is arranged at the top of the extrusion and expansion support rod 1, the rotating assembly 3 is located between the extrusion and expansion support rod 1 and the base rod 2, the expansion assembly 4 is arranged inside the extrusion and expansion support rod 1, and the reinforcement assembly 5 is arranged on the expansion assembly 4.

[0028] The reinforcement component 5 includes two first movable blocks 51. The two first movable blocks 51 are symmetrically distributed with the central axis of the extrusion support rod 1 as the center. A connecting rod 52 is fixedly connected to the bottom of the first movable block 51. A second movable block 53 is fixedly connected to the bottom of the connecting rod 52. The connecting rod 52 is located between the first movable block 51 and the second movable block 53. A slider 54 is hinged on the second movable block 53. The number of the first movable block 51, the connecting rod 52, the second movable block 53 and the slider 54 is equal and they correspond one by one. After the expansion component 4 changes, the connecting rod 52 changes accordingly through the cooperation of the first movable block 51, the connecting rod 52, the second movable block 53 and the slider 54, increasing the stability of the use of the expansion component 4, thereby improving the rigidity of the entire device. During the extrusion process, the extrusion structure can better resist external loads, reducing deformation and vibration.

[0029] As Figure 2 shown in the figure, the rotation component 3 includes a motor 31 fixedly connected to the bottom of the base rod 2. The motor 31 is located at the center of the bottom of the base rod 2. The output end of the motor 31 is fixedly connected to a shaft rod 32. The bottom of the shaft rod 32 is fixedly connected to a disc 33. The outer circumference of the disc 33 is equal to the inner circumference of the extrusion support rod 1. The shaft rod 32, the disc 33 and the extrusion support rod 1 are coaxial. After the motor 31 operates, the shaft rod 32 drives the disc 33 to rotate, causing the extrusion support rod 1 to rotate accordingly.

[0030] As Figure 2 shown in the figure, a sleeve block 34 is fixedly connected to the outer side wall of the shaft rod 32. A stabilizing rod 35 is fixedly connected to the outer side wall of the sleeve block 34. There are four stabilizing rods 35. The four stabilizing rods 35 are located on the sleeve block 34 and are distributed in a circumferential array. The bottom of the stabilizing rod 35 is fixedly connected to the top of the disc 33. The sleeve block 34 and the stabilizing rod 35 increase the stability of the rotation of the disc 33.

[0031] As Figures 1-3 shown in the figure, the expansion component 4 includes a hydraulic rod 41 fixedly connected to the bottom of the disc 33. The hydraulic rod 41 is located at the center of the bottom of the disc 33. The end of the piston rod in the hydraulic rod 41 is fixedly connected to a U-shaped plate 42. The bottom of the U-shaped plate 42 is hinged with an upper expansion rod 43. There are two upper expansion rods 43. The two upper expansion rods 43 are symmetrically distributed with the central axis of the U-shaped plate 42 as the center. The first movable block 51 is hinged on the upper expansion rod 43. The bottom of the upper expansion rod 43 is hinged with a lower expansion rod 44. The number of the upper expansion rod 43 and the lower expansion rod 44 is equal and they correspond one by one. The bottom of the lower expansion rod 44 is hinged with a bottom plate 45. The bottom plate 45 is fixedly connected to the bottom of the extrusion support rod 1. After the hydraulic rod 41 operates, the height of the U-shaped plate 42 is adjusted, causing the upper expansion rod 43 and the lower expansion rod 44 to change accordingly, thereby adjusting the diameter of the pile.

[0032] As Figure 3As shown, a sliding groove 55 is provided on the lower expansion rod 44. The lower expansion rod 44 is slidably connected to the slider 54 through the sliding groove 55. The sliding groove 55 facilitates the movement of the slider 54 and is convenient for the bottom end of the connecting rod 52 to change.

[0033] As Figure 2 and Figure 4 shown, a variable-diameter pipe 6 is fixedly connected to the bottom of the base rod 2, and the motor 31 is located inside the variable-diameter pipe 6. An annular groove 7 is provided at the bottom of the variable-diameter pipe 6. The variable-diameter pipe 6 is rotatably connected to an annular plate 8 through the annular groove 7. The annular groove 7 is adapted to the annular plate 8. The annular plate 8 is fixedly connected to the top of the extrusion and expansion support rod 1. The annular groove 7 and the annular plate 8 increase the rotation stability of the extrusion and expansion support rod 1.

[0034] As Figure 2 shown, a reinforcing rib 9 is fixedly connected inside the extrusion and expansion support rod 1. There are two reinforcing ribs 9, and the two reinforcing ribs 9 are evenly distributed inside the extrusion and expansion support rod 1. The outer circumference of the reinforcing rib 9 is equal to the inner circumference of the extrusion and expansion support rod 1. The reinforcing rib 9 increases the bearing capacity of the extrusion and expansion support rod 1.

[0035] Working principle: First, a hole is drilled in the corresponding area by a rotary drilling rig. The crane is connected to the top end of the base rod 2, and the extrusion and expansion support rod 1 is sent into the hole. The motor 31 operates, and the shaft rod 32 drives the disc 33 to rotate. The sleeve block 34 and the stabilizing rod 35 increase the rotation stability of the disc 33. After the extrusion and expansion support rod 1 moves into the hole, the hydraulic rod 41 operates, and the U-shaped plate 42 moves downward accordingly. The upper expansion rod 43 and the lower expansion rod 44 change and fold, and the slider 54 moves downward accordingly. Through the action of the first movable block 51 and the second movable block 53, the position of the connecting rod 52 changes accordingly. The motor 31 operates again, and the lower expansion rod 44 and the upper expansion rod 43 rotate accordingly to adjust the diameter of the formed hole, thereby adjusting the diameter of the cast-in-place pile. Among them, the reinforcing component 5 increases the connectivity between the upper expansion rod 43 and the lower expansion rod 44. During the process of the base rod 2 rotating around the center line of the extrusion and expansion support rod 1, the upper expansion rod 43 and the lower expansion rod 44 stably squeeze the inner wall of the drill hole, thereby increasing the bearing capacity of the expansion component 4.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0037] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows for mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solution and the inventive concept of the present utility model, and all such changes or substitutions should fall within the protection scope of the present utility model.

Claims

1. A diameter adjustment device for squeezed-expanded pile formation, characterized in that, It includes an extrusion-expanded support rod (1), a base rod (2), a rotary assembly (3) for driving drilling, an expansion assembly (4) for controlling the pile diameter, and a reinforcement assembly (5) for stable operation during the extrusion-expansion process. The base rod (2) is arranged directly above the extrusion-expanded support rod (1), the rotary assembly (3) is arranged at the top of the extrusion-expanded support rod (1), the expansion assembly (4) is arranged inside the extrusion-expanded support rod (1), and the reinforcement assembly (5) is arranged on the expansion assembly (4). The reinforcement assembly (5) includes a first movable block (51). A connecting rod (52) is fixedly connected to the bottom of the first movable block (51). A second movable block (53) is fixedly connected to the bottom of the connecting rod (52). A slider (54) is hinged to the second movable block (53).

2. The diameter adjustment device for squeezed and expanded pile according to claim 1, characterized in that, The rotary assembly (3) includes a motor (31) fixedly connected to the bottom of the base rod (2). A shaft rod (32) is fixedly connected to the output end of the motor (31). A disc (33) is fixedly connected to the bottom of the shaft rod (32).

3. The diameter adjustment device for squeezed-expanded pile according to claim 2, characterized in that, A sleeve block (34) is fixedly connected to the outer sidewall of the shaft rod (32). A stabilizing rod (35) is fixedly connected to the outer sidewall of the sleeve block (34). The bottom of the stabilizing rod (35) is fixedly connected to the top of the disc (33).

4. The diameter adjustment device for squeezed-expanded pile according to claim 1, wherein The expansion assembly (4) includes a hydraulic rod (41) fixedly connected to the bottom of the disc (33). The end of the piston rod of the hydraulic rod (41) is fixedly connected to a U-shaped plate (42). An upper expansion rod (43) is hinged to the bottom of the U-shaped plate (42). The first movable block (51) is hinged to the upper expansion rod (43). A lower expansion rod (44) is hinged to the bottom of the upper expansion rod (43). A bottom plate (45) is hinged to the bottom of the lower expansion rod (44). The bottom plate (45) is fixedly connected to the bottom of the extrusion-expanded support rod (1).

5. The diameter adjustment device for squeezed-expanded pile according to claim 4, wherein A chute (55) is formed in the lower expansion rod (44). The lower expansion rod (44) is slidably connected to the slider (54) through the chute (55).

6. The diameter adjustment device for squeezed-expanded pile according to claim 1, characterized in that A reducing pipe (6) is fixedly connected to the bottom of the base rod (2), and the motor (31) is located inside the reducing pipe (6). An annular groove (7) is formed at the bottom of the reducing pipe (6). The reducing pipe (6) is rotatably connected to an annular plate (8) through the annular groove (7). The annular plate (8) is fixedly connected to the top of the extrusion-expanded support rod (1).

7. The diameter adjustment device for squeezed and expanded pile according to claim 1, characterized in that A reinforcing rib (9) is fixedly connected inside the extrusion-expanded support rod (1), and the outer circumference of the reinforcing rib (9) is equal to the inner circumference of the extrusion-expanded support rod (1).

Images