Pile expanding equipment

Abstract

The utility model discloses pile expanding equipment which comprises a mounting seat, a rectangular pipe is fixedly communicated with the bottom of the mounting seat, a restraining block is connected to the inner wall of the rectangular pipe in a sliding mode, a connecting pipe is fixedly communicated with the outer wall of the restraining block, a bottom plate is fixedly communicated with the bottom of the connecting pipe, and a plurality of connecting columns are fixedly connected to the bottom of the bottom plate. Two cross-shaped blades are fixedly connected between the multiple connecting columns, and two upper arm shafts are fixedly connected to the bottom of the mounting base. By arranging the bottom plate, the connecting column, the cross-shaped blade, the circular ring, the upper arm shaft, the upper arm rod, the hinge shaft, the lower arm rod, the tooth blocks, the U-shaped blocks and the rollers, the upper arm rod and the lower arm rod rotate when expanding, so that soil on the hole wall of the tooth blocks is cut, the rollers extrude the surface of the soil back and forth, local looseness is avoided, the hole diameter deviation is too large, and the soil quality is improved. And meanwhile, the cross-shaped blades crush large soil, so that the equipment is prevented from being blocked during discharging.

Description

Technical Field

[0001] The utility model relates to the technical field of pile expansion, in particular to a pile expansion device. Background Art

[0002] In road and bridge projects, very high pile foundation technology is required. Only by laying a good foundation can the quality of road and bridge projects be guaranteed. Bored pile technology has the characteristics of simple operation, strong adaptability, reasonable cost and high quality, so it is widely used in road and bridge projects; however, due to the complex geological environment of the site, the geological conditions in different regions are different, and the foundation soil conditions are also different. Some sites have thick soil layers and solid soil, which are suitable for bored piles with smaller diameters, but some sites have loose sand or clay, which have higher requirements for bored piles and need to be expanded to solve problems such as insufficient bored piles and uneven foundations.

[0003] In the prior art, due to the different hardness of underground soil, when the pile expansion equipment is used to expand the hole, the tightness of the surrounding hole walls is inconsistent, and even the local hole wall soil layer falls off, thereby affecting the stability of the pile column after pouring. Therefore, we propose a pile expansion equipment to solve the above problem. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a pile expansion device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pile expansion device comprises a mounting seat, the bottom of the mounting seat is fixedly connected with a rectangular tube, the inner wall of the rectangular tube is slidably connected with a constraint block, the outer wall of the constraint block is fixedly connected with a connecting tube, the bottom of the connecting tube is fixedly connected with a bottom plate, the bottom of the bottom plate is fixedly connected with a plurality of connecting columns, two cross blades are fixedly connected between the plurality of connecting columns, the bottom of the mounting seat is fixedly connected with two upper arm shafts, the outer walls of the two upper arm shafts are rotatably sleeved with upper arm rods, the outer walls of the two upper arm rods are rotatably connected with hinge shafts, the outer walls of the two hinge shafts are rotatably sleeved with lower arm rods, the top of the bottom plate is fixedly connected with two pin shafts, the outer walls of the two pin shafts are rotatably connected to the bottoms of the two lower arm rods respectively, and the outer walls of the upper arm rod and the lower arm rod are provided with reaming mechanisms.

[0007] Preferably, the hole expanding mechanism comprises a plurality of tooth blocks, the outer walls of the upper arm and the lower arm are respectively fixedly connected to one end of the plurality of tooth blocks, one end of the plurality of tooth blocks are respectively fixedly connected to the outer walls of the upper arm and the lower arm, the outer walls of the plurality of U-shaped blocks are rotatably connected to rollers, and the teeth and rollers on the upper arm and the lower arm on both sides are staggered up and down, so that the teeth and pulleys can better expand the hole.

[0008] Preferably, the outer wall of the constraint block is rotatably connected with a plurality of balls, and the outer walls of the plurality of balls are connected with the rectangular tube, and the balls are provided to assist the connecting tube to move in the rectangular tube.

[0009] Preferably, a plurality of mounting holes are provided on the outer wall of the mounting seat, and the mounting seat can be connected to external equipment by providing the mounting holes.

[0010] Preferably, the bottoms of the multiple connecting columns are fixedly connected to a same circular ring, and the connecting pipe is supported by the circular ring.

[0011] Preferably, the two upper arms are arranged symmetrically.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] This solution is provided with a base plate, connecting column, cross blade, circular ring, upper arm shaft, upper arm rod, hinge shaft, lower arm rod, tooth block, U-shaped block and roller. When the upper arm rod and the lower arm rod are expanded and rotated, the soil on the hole wall of multiple tooth blocks is cut, and the roller squeezes the soil surface back and forth to avoid local looseness and excessive aperture deviation. At the same time, the cross blade crushes larger pieces of soil to avoid clogging of the equipment during discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic diagram of the cross-sectional structure of a pile expansion device proposed by the utility model;

[0016] Figure 2 A partial three-dimensional structural schematic diagram of a pile expansion device proposed by the utility model;

[0017] Figure 3 A pile expansion device proposed by the utility model Figure 1 A schematic diagram of the enlarged structure of part A in the figure.

[0018] In the figure: 1. mounting seat; 2. mounting hole; 3. rectangular tube; 4. constraint block; 5. connecting tube; 6. bottom plate; 7. connecting column; 8. cross blade; 9. circular ring; 10. upper arm shaft; 11. upper arm rod; 12. hinge shaft; 13. lower arm rod; 14. tooth block; 15. U-shaped block; 16. roller. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Depend on Figure 1-Figure 3 As shown, it relates to a pile expansion device, including a mounting seat 1, a plurality of mounting holes 2 are opened on the outer wall of the mounting seat 1, a rectangular tube 3 is fixedly connected to the bottom of the mounting seat 1, a constraint block 4 is slidably connected to the inner wall of the rectangular tube 3, the constraint block 4 prevents the connecting tube 5 from sliding out of the rectangular tube 3, the outer wall of the constraint block 4 is rotatably connected to a plurality of balls, the outer walls of the plurality of balls are all slidably connected to the inner wall of the rectangular tube 3, and the plurality of balls assist the connecting tube 5 to move.

[0021] The outer wall of the constraint block 4 is fixedly connected with a connecting pipe 5, the bottom of the connecting pipe 5 is fixedly connected with a bottom plate 6, the bottom of the bottom plate 6 is fixedly connected with a plurality of connecting columns 7, two cross blades 8 are fixedly connected between the plurality of connecting columns 7, the plurality of connecting columns 7 support the two cross blades 8, and as the mounting seat 1 and the connecting pipe 5 rotate, the bottoms of the plurality of connecting columns 7 are fixedly connected with the same circular ring 9.

[0022] Two upper arm shafts 10 are fixedly connected to the bottom of the mounting base 1, and the outer walls of the two upper arm shafts 10 are rotatably sleeved with upper arm rods 11, and the upper arm rods 11 are rotated by using the upper arm shaft 10 as a fulcrum. The two upper arm rods 11 are symmetrically arranged, and the outer walls of the two upper arm rods 11 are rotatably connected with hinge shafts 12, and the outer walls of the two hinge shafts 12 are rotatably sleeved with lower arm rods 13, and the upper arm shafts 10 and the lower arm rods 13 are rotated outwardly through the hinge shafts 12, and two pin shafts are fixedly connected to the top of the base plate 6, and the outer walls of the two pin shafts are rotatably connected to the bottoms of the two lower arm rods 13 respectively, and the two pin shafts assist the lower arm rods 13 to rotate.

[0023] The outer walls of the upper arm 11 and the lower arm 13 are both provided with a hole expanding mechanism, which includes a plurality of tooth blocks 14, one ends of the plurality of teeth 14 are respectively fixedly connected to the outer walls of the upper arm 11 and the lower arm 13, and the plurality of tooth blocks 14 cut the soil on the hole wall during rotation and movement to achieve hole expansion. The outer walls of the upper arm 11 and the lower arm 13 are evenly and fixedly connected with a plurality of U-shaped blocks 15, and the outer walls of the plurality of U-shaped blocks 15 are rotatably connected with rollers 16, and the U-shaped blocks 15 assist the rollers 16 in rotation.

[0024] Working principle: When in use, the mounting base 1 is connected to the rotating head on the equipment through the mounting hole 2, and the mounting base 1 and the lower body are placed in the hole. When the circular ring 9 contacts the inner bottom of the pile hole, it continues to move so that the two upper arms 11 and the two lower arms 13 are expanded outward through the hinge shaft 12, so that the upper arms 11 and the lower arms 13 slowly form a V shape. During the expansion process, the mounting base 1 is rotated by the equipment. During the rotation process, multiple tooth blocks 14 contact the hole wall to cut the soil. At the same time, since the tooth blocks 14 and the rollers 16 on the upper arms 11 and the lower arms 13 on both sides are staggered, during the rotation process, the rollers 16 squeeze the soil surface to avoid local looseness, resulting in excessive aperture deviation. When the broken soil falls on the cross blade 8, it is crushed to avoid blockage when the external equipment pipeline passes through the rectangular tube 3 and the connecting tube 5 to suck out the mixture of soil and water.

[0025] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A pile expansion device, comprising a mounting base (1), characterized in that: A rectangular tube (3) is fixedly connected to the bottom of the mounting seat (1); a restraining block (4) is slidably connected to the inner wall of the rectangular tube (3); a connecting tube (5) is fixedly connected to the outer wall of the restraining block (4); a bottom plate (6) is fixedly connected to the bottom of the connecting tube (5); a plurality of connecting columns (7) are fixedly connected to the bottom of the bottom plate (6); two cross blades (8) are fixedly connected between the plurality of connecting columns (7); and two upper arm shafts ( 10), the outer walls of the two upper arm shafts (10) are rotatably sleeved with upper arm rods (11), the outer walls of the two upper arm rods (11) are rotatably connected with hinge shafts (12), the outer walls of the two hinge shafts (12) are rotatably sleeved with lower arm rods (13), the top of the bottom plate (6) is fixedly connected with two pins, the outer walls of the two pins are rotatably connected with the bottoms of the two lower arm rods (13), and the outer walls of the upper arm rods (11) and the lower arm rods (13) are both provided with expansion mechanisms.

2. A pile expansion device according to claim 1, characterized in that: The hole expanding mechanism comprises a plurality of tooth blocks (14), one end of each of the plurality of tooth blocks (14) being fixedly connected to the outer walls of an upper arm (11) and a lower arm (13), respectively; a plurality of U-shaped blocks (15) are evenly and fixedly connected to the outer walls of the upper arm (11) and the lower arm (13); and a plurality of rollers (16) are rotatably connected to the outer walls of the plurality of U-shaped blocks (15).

3. A pile expansion device according to claim 1, characterized in that: The outer wall of the restraining block (4) is rotatably connected to a plurality of balls, and the outer walls of the plurality of balls are all slidably connected to the inner wall of the rectangular tube (3).

4. A pile expansion device according to claim 1, characterized in that: The outer wall of the mounting seat (1) is provided with a plurality of mounting holes (2).

5. The pile expansion device according to claim 1, characterized in that: The bottoms of the plurality of connection columns (7) are fixedly connected to a same circular ring (9).

6. The pile expansion device according to claim 1, characterized in that: The two upper arm rods (11) are symmetrically arranged.

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