Hydraulic vibration-free compaction reaming device

Abstract

The utility model discloses a hydraulic vibration-free compaction and reaming device which comprises a hoisting mechanism arranged on a collapsible loess foundation and a reaming mechanism connected with the hoisting mechanism. The reaming mechanism comprises a first semi-cylinder, a second semi-cylinder, a first arc-shaped soil squeezing plate, a second arc-shaped soil squeezing plate, a first hydraulic cylinder for driving the first arc-shaped soil squeezing plate to expand outwards or retract inwards and a second hydraulic cylinder for driving the second arc-shaped soil squeezing plate to expand outwards or retract inwards, wherein the first semi-cylinder and the second semi-cylinder are spliced. Hoisting ends are arranged at the tops of the first semi-cylinder and the second semi-cylinder, and sealing ends are arranged at the bottoms of the first semi-cylinder and the second semi-cylinder; the hoisting mechanism comprises a bearing plate, a hoisting frame, a hoisting cross beam and two hand-cranking self-locking winches arranged on the hoisting cross beam, and the hoisting ends of hoisting steel wires on the hand-cranking self-locking winches are connected with the hoisting ends. According to the utility model, hydraulic reaming is adopted, the loading force is stable and reliable, the hydraulic loading thrust is stable and reliable, and the influence of vibration load on an adjacent existing structure can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to geotechnical engineering construction technical field, especially is involved in a hydraulic type non -vibration compaction reaming device. BACKGROUND

[0002] Foundation treatment is the core problem faced in urban rail transit engineering construction in collapsible loess area, and if the collapsible loess of tunnel base is not properly treated, it will cause many problems such as segment cracking and lining misalignment. The current common methods for tunnel base treatment in collapsible loess area include soil replacement cushion method, lime-soil compaction pile method, rotary jet pile method and root pile method. The soil replacement cushion method is not suitable for large-area and large-thickness loess foundation treatment, the lime-soil compaction pile method has great difficulty in controlling the quality of hole forming and has great vibration during construction, the rotary jet pile method is not suitable for construction operation in narrow space due to the large size of construction machinery, and the root pile method can be used for construction operation in narrow space, but it has limited application range due to the high difficulty in controlling the quality of pile forming and high construction technology requirement.

[0003] During the foundation treatment of a high-speed rail large-section collapsible loess tunnel, the construction space and vibration are limited: the allowable construction height is less than 6.7 m, the width is less than 7.8 m, and the vibration safety wave velocity is 0.02-0.03 m / s. In the collapsible loess foundation reinforcement treatment of existing industrial and civil buildings and ancient buildings, the allowable construction space is less than 3 m, and the vibration and noise are more strictly limited. Therefore, the above-mentioned foundation treatment methods and equipment, such as soil replacement cushion method, lime-soil compaction pile method, rotary jet pile method and root pile method, still face the limitation of construction space and vibration noise. Therefore, in view of the increasing demand for underground narrow space foundation treatment engineering in collapsible loess area, such as public and private tunnels, culverts and existing building reinforcement, it is urgent to develop a hydraulic type non-vibration compaction reaming device with reasonable design, which can extend into the collapsible loess foundation pre-formed hole to realize non-vibration compaction reaming by applying lateral force through a hydraulic cylinder, and the hydraulic loading thrust is stable and reliable, and can effectively reduce the influence of vibration load on adjacent existing structures. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the utility model is to provide a hydraulic type non-vibration compaction reaming device, which is convenient to use, can extend into the collapsible loess foundation pre-formed hole to realize non-vibration compaction reaming by applying lateral force through a hydraulic cylinder, the hydraulic loading thrust is stable and reliable, and can effectively reduce the influence of vibration load on adjacent existing structures.

[0005] To solve the above technical problems, the utility model adopts the technical scheme: a hydraulic type non-vibration compaction reaming device, characterized by comprising a hoisting mechanism arranged on a collapsible loess foundation surface and a reaming mechanism connected with the hoisting mechanism and arranged in a pre-formed hole.

[0006] The hole expansion mechanism includes two spliced ​​first semi-cylinders, a second semi-cylinder, a first arc-shaped soil squeezing plate arranged along the outer wall of the first semi-cylinder, a second arc-shaped soil squeezing plate arranged along the outer wall of the second semi-cylinder, a first hydraulic cylinder that drives the first arc-shaped soil squeezing plate to expand outward or retract inward, and a second hydraulic cylinder that drives the second arc-shaped soil squeezing plate to expand outward or retract inward.

[0007] The first and second semi-cylinders are provided with lifting ends at their tops and with sealing ends at their bottoms.

[0008] The hoisting mechanism includes a bearing plate set on the collapsible loess base, a hoisting frame set on the bearing plate, a hoisting beam set on the hoisting frame, and two hand-cranked self-locking winches set on the hoisting beams. The hoisting end of the hoisting steel wire on the hand-cranked self-locking winch is connected to the hoisting end.

[0009] The above-mentioned hydraulic vibration-free compaction and expansion device is characterized in that: the first semi-cylinder and the second semi-cylinder have the same structure, and both the first semi-cylinder and the second semi-cylinder include a semi-cylinder base and a cylindrical blind hole and a stepped through hole provided on the semi-cylinder base. The cylindrical blind hole and the stepped through hole on the semi-cylinder base are arranged alternately. A cylindrical blind hole on the first semi-cylinder and a stepped through hole on the second semi-cylinder correspond to each other for the installation of a second hydraulic cylinder. A cylindrical blind hole on the second semi-cylinder and a stepped through hole on the first semi-cylinder correspond to each other for the installation of a first hydraulic cylinder. The piston rod of the first hydraulic cylinder extending out of the first semi-cylinder is connected to the first arc-shaped extrusion plate, and the piston rod of the second hydraulic cylinder extending out of the second semi-cylinder is connected to the second arc-shaped extrusion plate.

[0010] The above-mentioned hydraulic vibration-free compaction and expansion device is characterized in that: the top end of the semi-cylindrical base is provided with an upper semi-circular groove, the top surface of the semi-cylindrical base is provided with an upper semi-circular hole communicating with the upper semi-circular groove, the upper semi-circular hole on the first semi-cylindrical body and the upper semi-circular hole on the second semi-cylindrical body are spliced ​​together to form an upper circular hole, and the upper semi-circular groove on the first semi-cylindrical body and the upper semi-circular groove on the second semi-cylindrical body are spliced ​​together to form an upper circular groove.

[0011] The hoisting end includes an upper cylindrical seat fitted into the upper circular groove, an upper vertical rod integrally formed with the upper cylindrical seat and passing through the upper circular hole, and a hoisting beam integrally formed with the upper vertical rod. The hoisting beam is provided with two symmetrically arranged hoisting holes, and the hoisting end of the hoisting steel wire passes through the hoisting holes and is connected by a wire rope buckle.

[0012] The above-mentioned hydraulic vibration-free compaction and expansion device is characterized in that: a lower semi-circular groove is provided at the bottom end of the semi-cylindrical base, a lower semi-circular hole communicating with the lower semi-circular groove is provided on the bottom surface of the semi-cylindrical base, the lower semi-circular hole on the first semi-cylindrical body and the lower semi-circular hole on the second semi-cylindrical body are joined together to form a lower circular hole, and the lower semi-circular groove on the first semi-cylindrical body and the lower semi-circular groove on the second semi-cylindrical body are joined together to form a lower circular groove.

[0013] The sealing end includes a lower cylindrical seat fitted into the lower circular groove, a lower vertical rod integrally formed with the lower cylindrical seat and passing through the lower circular hole, and a cover plate covering the bottom ends of the first semi-cylinder and the second semi-cylinder. The cover plate and the lower vertical rod are connected by bottom bolts.

[0014] The above-mentioned hydraulic vibration-free compaction and expansion device is characterized in that: two symmetrically arranged through grooves are provided on the semi-cylindrical base in the circumference of the cylindrical blind hole and the stepped through hole; a relief part is provided at the connection between the plane and the arc surface of the semi-cylindrical base; the relief part on the first semi-cylindrical base and the relief part on the second semi-cylindrical base are spliced ​​together to form two symmetrically arranged trapezoidal oil passage slots; the through grooves on the first semi-cylindrical base and the through grooves on the second semi-cylindrical base are spliced ​​together to form a through groove.

[0015] The two trapezoidal oil passage openings are designated as the first trapezoidal oil passage opening and the second trapezoidal oil passage opening. A pressurized oil pipe is installed in the first trapezoidal oil passage opening, and a lower oil pipe end cap is installed at the bottom of the pressurized oil pipe. Multiple oil pipe tees that cooperate with the first hydraulic cylinder and the second hydraulic cylinder are installed in the pressurized oil pipe. The oil inlet lines at the oil inlets of the first hydraulic cylinder and the second hydraulic cylinder pass through the cable groove and connect to the interface of the oil pipe tees in the pressurized oil pipe.

[0016] The second trapezoidal oil passage slot is provided with a pressure relief oil pipe, the bottom of which is provided with a lower oil pipe end cap. The pressure relief oil pipe is provided with multiple oil pipe tees that cooperate with the first hydraulic cylinder and the second hydraulic cylinder. The return oil lines at the return oil ports of the first hydraulic cylinder and the second hydraulic cylinder pass through the wire groove and connect to the interface of the oil pipe tees in the pressure relief oil pipe.

[0017] The pressurizing oil pipe and the depressurizing oil pipe extend from the top of the reaming mechanism and are both connected to the hydraulic pump station.

[0018] The above-mentioned hydraulic vibration-free compaction and expansion device is characterized in that: a connecting plate is provided at the rear end of the cylinder body of the first hydraulic cylinder and the second hydraulic cylinder, a pressure sensor is provided on the connecting plate, the pressure sensor is installed in contact with the bottom surface of the cylindrical blind hole, and the pressure data line of the pressure sensor passes through the connecting plate, the cylindrical blind hole and the wire groove and is laid along the trapezoidal oil passage groove.

[0019] The semi-cylindrical base is provided with a laser mounting hole and a wire passage connected to the laser mounting hole. A laser displacement sensor is provided in the laser mounting hole. The laser emitted by the laser displacement sensor passes through the laser mounting hole and is projected onto the longitudinal center line of the inner arc surface of the first arc-shaped soil squeezing plate and the second arc-shaped soil squeezing plate.

[0020] The displacement data line of the laser displacement sensor is laid out along the trapezoidal oil passage after passing through the wire channel.

[0021] The pressure data line of the pressure sensor and the displacement data line of the laser displacement sensor extend out of the trapezoidal oil passage and are connected to the data acquisition module.

[0022] The above-mentioned hydraulic vibration-free compaction and expansion device is characterized in that: a groove guard plate is provided at the trapezoidal oil passage groove, a plurality of connecting holes are provided on the semi-cylindrical base along the length direction, and the groove guard plate and the semi-cylindrical base are connected by screws at the contact point, and the screws extend into the connecting holes;

[0023] The two semi-cylindrical bases are provided with multiple fastening holes along the height direction, and fastening bolts are inserted into the fastening holes of the two semi-cylindrical bases for connection.

[0024] The above-mentioned hydraulic vibration-free compaction and expansion device is characterized in that: a circular slide rail is provided on the bearing plate, and rollers are provided at the bottom of the hoisting frame, with the rollers mounted on the circular slide rail.

[0025] This utility model has the following advantages compared with the prior art:

[0026] 1. This utility model has a simple structure, reasonable design, and is easy to install and use, thus improving the quality of hole enlargement.

[0027] 2. This utility model is equipped with a hoisting mechanism, which uses a hoisting steel wire to hoist the hole-expanding mechanism, thereby facilitating the insertion of the hole-expanding mechanism into the pre-drilled hole for hole expansion. In addition, the insertion depth of the hole-expanding mechanism can be adjusted by setting the hoisting steel wire to adapt to hole expansion within different depth ranges. Furthermore, the hoisting mechanism can also drive the hole-expanding mechanism to rotate 90° for repeated hole expansion to meet hole expansion requirements in different directions.

[0028] 3. The hole-expanding mechanism of this utility model is equipped with two hydraulic cylinders and two arc-shaped soil-squeezing plates. The hydraulic cylinders apply power to the arc-shaped soil-squeezing plates, and the arc-shaped soil-squeezing plates expand outward to compact and expand the hole. By inserting the hole-expanding mechanism into the pre-formed hole to perform vibration-free compaction and expansion, the impact of vibration load on adjacent existing structures can be effectively reduced. Secondly, the hydraulic hole-expanding can provide strong thrust, and the loading force is stable and reliable, which improves the quality of hole expansion.

[0029] 4. The hole-expanding mechanism of this utility model is provided with two spliced ​​first semi-cylinders and second semi-cylinders to realize the embedding and installation of the first hydraulic cylinder and the second hydraulic cylinder, and to facilitate the piston rod to extend and connect to the arc-shaped extrusion plate, providing a bearing base, effectively adapting to the pre-formed hole shape, and having good overall compactness.

[0030] In summary, this utility model is reasonably designed and convenient. It extends into the pre-formed hole in the collapsible loess foundation and applies lateral force through a hydraulic cylinder to achieve vibration-free compaction and hole expansion. The hydraulic loading thrust is stable and reliable, and it can effectively reduce the impact of vibration load on adjacent existing structures.

[0031] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of this utility model.

[0033] Figure 2 This is a schematic diagram of the hole-expanding mechanism of this utility model.

[0034] Figure 3 for Figure 2 Top view.

[0035] Figure 4 for Figure 2 A schematic diagram of the structure after removing the curved extrusion plate.

[0036] Figure 5 This is a schematic diagram of the semi-cylinder structure of this utility model.

[0037] Figure 6 This is a schematic diagram of the structure of the hoisting end of this utility model.

[0038] Figure 7 This is a schematic diagram of the sealing end of this utility model.

[0039] Figure 8 This is a schematic diagram of the pressurized oil pipe and the pressure relief oil pipe of this utility model.

[0040] Figure 9 This is a schematic diagram of the pressure sensor of this utility model.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1-1—First semi-cylinder; 1-2—Second semi-cylinder; 1-11—Semi-cylinder base;

[0043] 1-12—Stepped through hole; 1-13—Cylindrical blind hole; 1-14—Lower semi-circular groove;

[0044] 1-15—Upper semicircular hole; 1-16—Upper semicircular groove; 1-17—Lower semicircular hole;

[0045] 1-18—Line guide groove; 1-19—Relief section; 1-3—Trapezoidal oil passage opening;

[0046] 1-31—Pressure oil pipe; 1-32—Pressure relief oil pipe; 1-33—Oil pipe tee fitting;

[0047] 1-34—Connecting oil pipe; 1-35—Lower oil pipe end cap;

[0048] 1-4—Upper round hole; 1-5—Wire groove;

[0049] 1-6—Groove guard plate; 1-7—Lifting end; 1-71—Upper cylindrical base;

[0050] 1-72—Upper vertical rod; 1-73—Hanging beam; 1-74—Hanging hole;

[0051] 1-8—Sealing end; 1-81—Lower cylindrical seat; 1-82—Lower vertical rod;

[0052] 1-83—Cover plate; 1-84—Bottom bolt; 1-9—Fastening hole;

[0053] 1-10—Connecting hole; 2-1—First arc-shaped extrusion plate; 2-11—Arch-shaped pad;

[0054] 2-12—Bolt; 2-2—Second arc-shaped extrusion plate; 3-1—First hydraulic cylinder;

[0055] 3-11—Inlet oil line; 3-12—Return oil line; 3-2—Second hydraulic cylinder;

[0056] 4-1—Bearing plate; 4-11—Circular slide rail; 4-2—Lifting frame;

[0057] 4-21—Roller; 4-3—Lifting beam; 4-4—Hand-cranked self-locking winch;

[0058] 4-5—Lifting steel wire; 5—Connecting plate; 6—Pressure sensor;

[0059] 6-1—Pressure data cable; 7—Laser displacement sensor; 7-1—Laser mounting hole;

[0060] 7-2—Wire passage; 7-3—Displacement data line; 8—Pre-drilled hole;

[0061] 9—Plum blossom-shaped pile holes; 10—Collapsible loess foundation; 11—Hydraulic pump station;

[0062] 12—Data Acquisition Module. Detailed Implementation

[0063] like Figures 1 to 9 The hydraulic vibration-free compaction and expansion device shown includes a hoisting mechanism set on the ground of the collapsible loess foundation 10 and an expansion mechanism connected to the hoisting mechanism and inserted into the pre-formed hole 8.

[0064] The hole expansion mechanism includes two spliced ​​first semi-cylinders 1-1 and 1-2, a first arc-shaped soil squeezing plate 2-1 arranged along the outer wall of the first semi-cylinder 1-1, a second arc-shaped soil squeezing plate 2-2 arranged along the outer wall of the second semi-cylinder 1-2, a first hydraulic cylinder 3-1 that drives the first arc-shaped soil squeezing plate 1-1 to expand outward or retract inward, and a second hydraulic cylinder 3-2 that drives the second arc-shaped soil squeezing plate 1-2 to expand outward or retract inward.

[0065] The first semi-cylinder 1-1 and the second semi-cylinder 1-2 are provided with lifting end head 1-7 at the top, and the first semi-cylinder 1-1 and the second semi-cylinder 1-2 are provided with sealing end head 1-8 at the bottom.

[0066] The hoisting mechanism includes a bearing plate 4-1 set on the ground of the collapsible loess foundation 10, a hoisting frame 4-2 set on the bearing plate 4-1, a hoisting beam 4-3 set on the hoisting frame 4-2, and two hand-cranked self-locking winches 4-4 set on the hoisting beam 4-3. The hoisting end of the hoisting steel wire 4-5 on the hand-cranked self-locking winch 4-4 is connected to the hoisting end 1-7.

[0067] In this embodiment, the first semi-cylinder 1-1 and the second semi-cylinder 1-2 have the same structure, and both the first semi-cylinder 1-1 and the second semi-cylinder 1-2 include a semi-cylindrical base 1-11 and a cylindrical blind hole 1-13 and a stepped through hole 1-12 disposed on the semi-cylindrical base 1-11. The cylindrical blind hole 1-13 and the stepped through hole 1-12 on the semi-cylindrical base 1-11 are arranged alternately. A cylindrical blind hole 1-13 on the first semi-cylinder 1-1 and a step through hole 1-12 on the second semi-cylinder 1-2 are arranged alternately. A stepped through hole 1-12 on the first semi-cylinder 1-2 is used for the installation of the second hydraulic cylinder 3-2. A cylindrical blind hole 1-13 on the second semi-cylinder 1-2 and a stepped through hole 1-12 on the first semi-cylinder 1-1 are used for the installation of the first hydraulic cylinder 3-1. The piston rod of the first hydraulic cylinder 3-1 extends out of the first semi-cylinder 1-1 and connects to the first arc-shaped soil squeezing plate 2-1. The piston rod of the second hydraulic cylinder 3-2 extends out of the second semi-cylinder 1-2 and connects to the second arc-shaped soil squeezing plate 2-2.

[0068] In this embodiment, the top end of the semi-cylindrical base 1-11 is provided with an upper semi-circular groove 1-16, and the top surface of the semi-cylindrical base 1-11 is provided with an upper semi-circular hole 1-15 communicating with the upper semi-circular groove 1-16. The upper semi-circular hole 1-15 on the first semi-cylindrical body 1-1 and the upper semi-circular hole 1-15 on the second semi-cylindrical body 1-2 are spliced ​​together to form an upper circular hole 1-4. The upper semi-circular groove 1-16 on the first semi-cylindrical body 1-1 and the upper semi-circular groove 1-16 on the second semi-cylindrical body 1-2 are spliced ​​together to form an upper circular groove.

[0069] The hoisting end 1-7 includes an upper cylindrical seat 1-71 fitted into the upper circular groove, an upper vertical rod 1-72 integrally formed with the upper cylindrical seat 1-71 and passing through the upper circular hole 1-4, and a hoisting beam 1-73 integrally formed with the upper vertical rod 1-72. The hoisting beam 1-73 is provided with two symmetrically arranged hoisting holes 1-74. The hoisting end of the hoisting steel wire 4-5 passes through the hoisting hole 1-74 and is connected by a wire rope buckle.

[0070] In this embodiment, the bottom end of the semi-cylindrical base 1-11 is provided with a lower semi-circular groove 1-14, and the bottom surface of the semi-cylindrical base 1-11 is provided with a lower semi-circular hole 1-17 communicating with the lower semi-circular groove 1-14. The lower semi-circular hole 1-17 on the first semi-cylindrical body 1-1 and the lower semi-circular hole 1-17 on the second semi-cylindrical body 1-2 are spliced ​​together to form a lower circular hole. The lower semi-circular groove 1-14 on the first semi-cylindrical body 1-1 and the lower semi-circular groove 1-14 on the second semi-cylindrical body 1-2 are spliced ​​together to form a lower circular groove.

[0071] The sealing end 1-8 includes a lower cylindrical seat 1-81 fitted into the lower circular groove, a lower vertical rod 1-82 integrally formed with the lower cylindrical seat 1-81 and passing through the lower circular hole, and a cover plate 1-83 covering the bottom ends of the first semi-cylinder 1-1 and the second semi-cylinder 1-2. The cover plate 1-83 and the lower vertical rod 1-82 are connected by a bottom bolt 1-84.

[0072] In this embodiment, two symmetrically arranged wire-passing grooves 1-18 are provided on the semi-cylindrical base 1-11 around the cylindrical blind hole 1-13 and the stepped through hole 1-12. A clearance portion 1-19 is provided at the connection between the plane and the arc surface of the semi-cylindrical base 1-11. The clearance portion 1-19 on the first semi-cylindrical body 1-1 and the clearance portion 1-19 on the second semi-cylindrical body 1-2 are spliced ​​together to form two symmetrically arranged trapezoidal oil passage slots 1-3. The wire-passing grooves 1-18 on the first semi-cylindrical body 1-1 and the wire-passing grooves 1-18 on the second semi-cylindrical body 1-2 are spliced ​​together to form a wire-passing groove 1-5.

[0073] The two trapezoidal oil passage openings 1-3 are respectively the first trapezoidal oil passage opening and the second trapezoidal oil passage opening. A pressurized oil pipe 1-31 is provided in the first trapezoidal oil passage opening. A lower oil pipe end cap 1-35 is provided at the bottom of the pressurized oil pipe 1-31. Multiple oil pipe tees 1-33 are provided in the pressurized oil pipe 1-31 to cooperate with the first hydraulic cylinder 3-1 and the second hydraulic cylinder 3-2. The oil inlet lines 3-11 at the oil inlets of the first hydraulic cylinder 3-1 and the second hydraulic cylinder 3-2 pass through the wire groove 1-5 and connect to the interface of the oil pipe tees 1-33 in the pressurized oil pipe 1-31.

[0074] The second trapezoidal oil passage slot is provided with a pressure relief oil pipe 1-32, and the bottom of the pressure relief oil pipe 1-32 is provided with a lower oil pipe end cap 1-35. The pressure relief oil pipe 1-32 is provided with a plurality of oil pipe tee fittings 1-33 that cooperate with the first hydraulic cylinder 3-1 and the second hydraulic cylinder 3-2. The return oil line 3-12 at the return oil port of the first hydraulic cylinder 3-1 and the second hydraulic cylinder 3-2 passes through the wire groove 1-5 and connects to the interface of the oil pipe tee fitting 1-33 in the pressure relief oil pipe 1-32.

[0075] The pressurized oil pipe 1-31 and the pressure relief oil pipe 1-32 extend from the top of the reaming mechanism and are both connected to the hydraulic pump station 11.

[0076] In this embodiment, a connecting plate 5 is provided at the rear end of the cylinder body of the first hydraulic cylinder 3-1 and the second hydraulic cylinder 3-2. A pressure sensor 6 is provided on the connecting plate 5. The pressure sensor 6 is installed in contact with the bottom surface of the cylindrical blind hole 1-13. The pressure data line 6-1 of the pressure sensor 6 passes through the connecting plate 5, the cylindrical blind hole 1-13 and the wire groove 1-5 and is then laid along the trapezoidal oil passage groove 1-3.

[0077] The semi-cylindrical base 1-11 is provided with a laser mounting hole 7-1 and a wire passage 7-2 connected to the laser mounting hole 7-1. A laser displacement sensor 7 is provided in the laser mounting hole 7-1. The laser emitted by the laser displacement sensor 7 passes through the laser mounting hole 7-1 and is projected onto the longitudinal center line of the inner arc surface of the first arc-shaped soil squeezing plate 2-1 and the second arc-shaped soil squeezing plate 2-2.

[0078] The displacement data line 7-3 of the laser displacement sensor 7 is laid along the trapezoidal oil passage 1-3 after passing through the wire passage 7-2.

[0079] The pressure data line 6-1 of the pressure sensor 6 and the displacement data line 7-3 of the laser displacement sensor 7 extend out of the trapezoidal oil passage slot 1-3 and are connected to the data acquisition module 12.

[0080] In this embodiment, a groove guard plate 1-6 is provided at the trapezoidal oil passage groove 1-3, and a plurality of connecting holes 1-10 are provided on the semi-cylindrical base 1-11 along the length direction. The groove guard plate 1-6 and the semi-cylindrical base 1-11 are connected by screws, and the screws extend into the connecting holes 1-10.

[0081] The two semi-cylindrical bases 1-11 are provided with a plurality of fastening holes 1-9 along the height direction, and fastening bolts are inserted through the fastening holes 1-9 of the two semi-cylindrical bases 1-11 for connection.

[0082] In this embodiment, a circular slide rail 4-11 is provided on the bearing plate 4-1, and a roller 4-21 is provided at the bottom of the hoisting frame 4-2, with the roller 4-21 mounted on the circular slide rail 4-11.

[0083] In this embodiment, specifically, the pressurizing oil pipe 1-31 and the depressurizing oil pipe 1-32, both extending from the top of the reaming mechanism, are connected to the hydraulic pump station 11 via connecting oil pipe 1-34.

[0084] In this embodiment, during specific implementation, the piston rod of the hydraulic cylinder extending out of the semi-cylindrical body is connected to the arc-shaped extrusion plate by bolts 2-12. The inner side wall of the arc-shaped extrusion plate is provided with an arc-shaped pad 2-11 for connecting the piston rod of the hydraulic cylinder, ensuring that the surface connected to the piston rod is a plane. The outer side wall of the semi-cylindrical body is provided with a clearance area for the matching arc-shaped pad, which facilitates the fitting of the arc-shaped extrusion plate when it shrinks.

[0085] In this embodiment, an arc-shaped soil squeezing plate is set up, and the outer side of the arc-shaped soil squeezing plate is in close contact with the hole wall in the pre-drilled hole, which is used to transmit the force output by the hydraulic cylinder to the surrounding soil to squeeze and expand the hole.

[0086] In this embodiment, the hydraulic cylinder is a cylinder with a diameter of 88mm and a height of 200mm, and the hydraulic piston stroke of the cylinder is 150mm.

[0087] In this embodiment, there are three hydraulic cylinders, namely the first hydraulic cylinder 3-1 and the second hydraulic cylinder 3-2, which are vertically distributed on both sides of the semi-cylinder. The piston rod of each set of hydraulic cylinders is connected to the arc-shaped soil squeezing plate on one side, which is used to simultaneously and synchronously push out and retract the arc-shaped soil squeezing plate.

[0088] In this embodiment, there are 6 pressure sensors 6, which are cylindrical with data lines connected to their sides. They are located at the rear end of each hydraulic cylinder and are used to monitor pressure changes during the operation of the cylinder.

[0089] There are six laser displacement sensors 7, which are cylindrical with data cables connected to their tails. Like the hydraulic cylinders, they are arranged in two groups vertically on both sides of the hole-expanding mechanism to monitor the diameter of the pile hole during the operation of the hole-expanding mechanism.

[0090] In this embodiment, when the two semi-cylinders are tightly fastened, they work together to bear the force under the action of 7 fastening bolts. In addition, the trapezoidal oil passage opening 1-3 is covered with a groove guard plate 1-6, which is fixed by several screws to prevent the oil passage opening from being exposed after the arc-shaped extrusion plate is unfolded, thus reducing the risk of dirt and scratches. The hoisting end and the two semi-cylinders are connected to form an integral whole under the fastening bolts, and the sealing end and the two semi-cylinders are connected to form an integral whole under the fastening bolts.

[0091] In this embodiment, when implemented, hydraulic oil is supplied to the first hydraulic cylinder 3-1 and the second hydraulic cylinder 3-2 by the pressurization oil pipe 1-31 through the hydraulic pump station 11 to pressurize and extend, or the first hydraulic cylinder 3-1 and the second hydraulic cylinder 3-2 are depressurized and contracted through the pressure relief oil pipe 1-32 through the hydraulic pump station 11. The extension and retraction control of hydraulic cylinders can be referred to in the art, and is not specifically limited here.

[0092] In this embodiment, the pressure sensor can refer to a spoke-type pressure sensor, which is used to monitor the jacking force during the hole enlargement process.

[0093] The laser displacement meter can be referenced from a TOF laser rangefinder sensor and is used to monitor the extrusion displacement of the extrusion plate during the hole enlargement process.

[0094] In this embodiment, the data acquisition module 12 can refer to a computer and a USB to S485 module connected to the computer, and the displacement data line 7-3 of the laser displacement sensor 7 is connected to the USB to S485 module.

[0095] The pressure data line 6-1 of the pressure sensor 6 is connected to the USB to S485 module via an RS pressure 485 transmitter. The USB to S485 module and the RS pressure 485 transmitter can be connected in a conventional manner.

[0096] In this embodiment, specifically, the stepped through hole 1-12 is a large-diameter hole with the same diameter as the cylindrical blind hole 1-13 and a small-diameter hole communicating with the large-diameter hole; the large-diameter hole and the cylindrical blind hole 1-13 are for mounting the cylinder bodies of the first hydraulic cylinder 3-1 and the second hydraulic cylinder 3-2, and the piston rods of the first hydraulic cylinder 3-1 and the second hydraulic cylinder 3-2 pass through the small-diameter hole and extend out of the semi-cylindrical base 1-11 to connect with the arc-shaped extrusion plate.

[0097] In this embodiment, the two semi-cylindrical bases 1-11 are connected along the height direction by seven fastening bolts, thereby splicing the two semi-cylindrical bases 1-11 together to form a whole.

[0098] In this embodiment, the upper cylindrical seat 1-71 is provided with an upper through hole arranged radially, and the lower cylindrical seat 1-81 is provided with a lower through hole arranged radially. The uppermost fastening bolt passes through the upper through hole of the upper cylindrical seat 1-71, and the lowermost fastening bolt passes through the lower through hole of the lower cylindrical seat 1-81. Thus, by passing through the upper cylindrical seat 1-71 and the lower cylindrical seat 1-81, the end fastening effect is improved.

[0099] In this embodiment, two hydraulic cylinders and two arc-shaped soil squeezing plates are set up. The hydraulic cylinders apply power to the arc-shaped soil squeezing plates, and the arc-shaped soil squeezing plates expand outward to perform soil compaction and hole expansion operations. By inserting the hole expansion mechanism into the pre-formed hole to perform vibration-free compaction and hole expansion, the impact of vibration load on adjacent existing structures can be effectively reduced.

[0100] In this embodiment, two spliced ​​first semi-cylinders 1-1 and 1-2 are provided to enable the embedding and installation of the first hydraulic cylinder 3-1 and the second hydraulic cylinder 3-2, and to facilitate the piston rod to extend and connect to the arc-shaped extrusion plate. This provides a bearing base and effectively adapts to the pre-formed hole shape, resulting in good overall compactness.

[0101] In this embodiment, when implemented, the outer surfaces of the first arc-shaped soil squeezing plate 2-1 and the second arc-shaped soil squeezing plate 2-2 are provided with multiple grooves, while the hydraulic cylinder connection position is not provided with grooves. The purpose is to maintain the rigidity of the soil squeezing blades, which not only plays the role of air venting and drainage during the soil compaction process, but also reduces the phenomenon of soil sticking.

[0102] In practical application, a pre-drilled hole 8 is formed in the collapsible loess foundation 10. A bearing plate 4-1 is placed above the pre-drilled hole 8, with the center of the bearing plate 4-1 aligned with the center of the pre-drilled hole 8. A lifting frame 4-2 is then placed on the bearing plate 4-1. A lifting beam 4-3 is provided on the lifting frame 4-2, and a hand-cranked self-locking winch 4-4 is provided on the lifting beam 4-3. The rollers 4-21 at the bottom of the lifting frame 4-2 are mounted on the circular slide rail 4-11.

[0103] On the ground, connect the two lifting steel wires 4-5 of the hand-cranked self-locking winch 4-4 in the lifting mechanism to the two lifting holes 1-74 of the lifting end 1-7 of the hole expansion mechanism. Then connect the protruding ends of the pressure relief oil pipe 1-32 and the pressure oil pipe 1-31 of the hole expansion mechanism to the pressure connection head and the unloading connection head of the hydraulic pump station 11, respectively. After that, connect the pressure data line 6-1 of the pressure sensor 6 and the displacement data line 7-3 of the laser displacement sensor 7 to the data acquisition module 12, respectively.

[0104] Adjust the rollers 4-8 and place them at the four corner limit points of the circular slide rail 4-11. Simultaneously rotate the hand-cranked self-locking winch 4-4 of the hoisting mechanism to lower the hole expansion mechanism into the pre-formed hole 8. After normal debugging, the hole expansion and compaction work can be carried out.

[0105] Hydraulic oil is supplied to the first hydraulic cylinder 3-1 and the second hydraulic cylinder 3-2 via the pressurization oil pipe 1-31 through the hydraulic pump station 11, causing them to extend under pressure. This extension of the first and second hydraulic cylinders 3-1 and 3-2 expands the first and second arc-shaped soil squeezing plates 2-1 and 2-2 outwards to compact the soil until the piston rods of the hole-expanding mechanism reach their maximum stroke. Then, the first and second hydraulic cylinders 3-1 and 3-2 are depressurized and retracted through the pressure relief oil pipe 1-32 via the hydraulic pump station 11, causing the first and second arc-shaped soil squeezing plates 2-1 and 2-2 to retract. The rollers 4-21 then rotate along the circular slide rail 4-11, causing the lifting frame 2-2 to rotate 90 degrees. This process is repeated to perform soil compaction at the same depth in another vertical direction.

[0106] Subsequently, the hand-cranked self-locking winch 4-4 is rotated synchronously to lower the hole-expanding mechanism by 1.2m via the hoisting steel line 4-5. Then, soil compaction operations are carried out in two directions in sequence, and this process is repeated until the bottom of the pre-formed hole 7 is reached, forming a quincunx-shaped pile hole 9. Finally, the hand-cranked self-locking winch 4-4 is rotated synchronously to lift the hole-expanding mechanism to the ground for subsequent reuse.

[0107] In summary, this utility model is reasonably designed and convenient. It extends into the pre-formed hole in the collapsible loess foundation and applies lateral force through a hydraulic cylinder to achieve vibration-free compaction and hole expansion. The hydraulic loading thrust is stable and reliable, and it can effectively reduce the impact of vibration load on adjacent existing structures.

[0108] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A hydraulic vibration-free compaction and pore-expanding device, characterized in that... : Includes a hoisting mechanism set on the ground of the collapsible loess foundation (10) and a hole enlargement mechanism connected to the hoisting mechanism and inserted into the pre-drilled hole (8); The hole expansion mechanism includes two spliced ​​first semi-cylinders (1-1) and second semi-cylinders (1-2), a first arc-shaped soil squeezing plate (2-1) arranged along the outer wall of the first semi-cylinder (1-1), a second arc-shaped soil squeezing plate (2-2) arranged along the outer wall of the second semi-cylinder (1-2), a first hydraulic cylinder (3-1) that drives the first arc-shaped soil squeezing plate (2-1) to expand outward or retract inward, and a second hydraulic cylinder (3-2) that drives the second arc-shaped soil squeezing plate (2-2) to expand outward or retract inward. The first semi-cylinder (1-1) and the second semi-cylinder (1-2) are provided with lifting end heads (1-7) at their tops, and the first semi-cylinder (1-1) and the second semi-cylinder (1-2) are provided with sealing end heads (1-8) at their bottoms. The hoisting mechanism includes a bearing plate (4-1) set on the ground of the collapsible loess foundation (10), a hoisting frame (4-2) set on the bearing plate (4-1), a hoisting beam (4-3) set on the hoisting frame (4-2), and two hand-cranked self-locking winches (4-4) set on the hoisting beam (4-3). The hoisting end of the hoisting steel wire (4-5) on the hand-cranked self-locking winch (4-4) is connected to the hoisting end (1-7).

2. The hydraulic vibration-free compaction and reaming device according to claim 1, characterized in that: The first semi-cylinder (1-1) and the second semi-cylinder (1-2) have the same structure, and both the first semi-cylinder (1-1) and the second semi-cylinder (1-2) include a semi-cylindrical base (1-11) and a cylindrical blind hole (1-13) and a stepped through hole (1-12) disposed on the semi-cylindrical base (1-11). The cylindrical blind hole (1-13) and the stepped through hole (1-12) on one of the semi-cylindrical bases (1-11) are arranged alternately. A cylindrical blind hole (1-13) on the first semi-cylinder (1-1) and the second semi-cylinder (1-2) A stepped through hole (1-12) on the first semi-cylinder (1-1) is provided for the installation of the second hydraulic cylinder (3-2). A cylindrical blind hole (1-13) on the second semi-cylinder (1-2) and a stepped through hole (1-12) on the first semi-cylinder (1-1) are provided for the installation of the first hydraulic cylinder (3-1). The piston rod of the first hydraulic cylinder (3-1) extending out of the first semi-cylinder (1-1) is connected to the first arc-shaped extrusion plate (2-1). The piston rod of the second hydraulic cylinder (3-2) extending out of the second semi-cylinder (1-2) is connected to the second arc-shaped extrusion plate (2-2).

3. A hydraulic vibration-free compaction and reaming device according to claim 2, characterized in that: The top of the semi-cylindrical base (1-11) is provided with an upper semi-circular groove (1-16), and the top surface of the semi-cylindrical base (1-11) is provided with an upper semi-circular hole (1-15) communicating with the upper semi-circular groove (1-16). The upper semi-circular hole (1-15) on the first semi-cylindrical body (1-1) and the upper semi-circular hole (1-15) on the second semi-cylindrical body (1-2) are joined together to form an upper circular hole (1-4). The upper semi-circular groove (1-16) on the first semi-cylindrical body (1-1) and the upper semi-circular groove (1-16) on the second semi-cylindrical body (1-2) are joined together to form an upper circular groove. The hoisting end (1-7) includes an upper cylindrical seat (1-71) fitted into the upper circular groove, an upper vertical rod (1-72) integrally formed with the upper cylindrical seat (1-71) and passing through the upper circular hole (1-4), and a hoisting crossbeam (1-73) integrally formed with the upper vertical rod (1-72). The hoisting crossbeam (1-73) is provided with two symmetrically arranged hoisting holes (1-74). The hoisting end of the hoisting steel wire (4-5) passes through the hoisting hole (1-74) and is connected by a wire rope buckle.

4. A hydraulic vibration-free compaction and reaming device according to claim 2, characterized in that: The bottom end of the semi-cylindrical base (1-11) is provided with a lower semi-circular groove (1-14), and the bottom surface of the semi-cylindrical base (1-11) is provided with a lower semi-circular hole (1-17) communicating with the lower semi-circular groove (1-14). The lower semi-circular hole (1-17) on the first semi-cylindrical body (1-1) and the lower semi-circular hole (1-17) on the second semi-cylindrical body (1-2) are spliced ​​together to form a lower circular hole. The lower semi-circular groove (1-14) on the first semi-cylindrical body (1-1) and the lower semi-circular groove (1-14) on the second semi-cylindrical body (1-2) are spliced ​​together to form a lower circular groove. The sealing end (1-8) includes a lower cylindrical seat (1-81) fitted into the lower circular groove, a lower vertical rod (1-82) integrally formed with the lower cylindrical seat (1-81) and passing through the lower circular hole, and a cover plate (1-83) covering the bottom ends of the first semi-cylinder (1-1) and the second semi-cylinder (1-2). The cover plate (1-83) and the lower vertical rod (1-82) are connected by a bottom bolt (1-84).

5. A hydraulic vibration-free compaction and reaming device according to claim 2, characterized in that: The semi-cylindrical base (1-11) is provided with two symmetrically arranged wire-passing grooves (1-18) around the cylindrical blind hole (1-13) and the stepped through hole (1-12). A relief part (1-19) is provided at the connection between the plane and the arc surface of the semi-cylindrical base (1-11). The relief part (1-19) on the first semi-cylindrical body (1-1) and the relief part (1-19) on the second semi-cylindrical body (1-2) are spliced ​​together to form two symmetrically arranged trapezoidal oil passage slots (1-3). The wire-passing groove (1-18) on the first semi-cylindrical body (1-1) and the wire-passing groove (1-18) on the second semi-cylindrical body (1-2) are spliced ​​together to form a wire-passing groove (1-5). Two trapezoidal oil passage openings (1-3) are respectively the first trapezoidal oil passage opening and the second trapezoidal oil passage opening. A pressurized oil pipe (1-31) is provided in the first trapezoidal oil passage opening. A lower oil pipe end cap (1-35) is provided at the bottom of the pressurized oil pipe (1-31). Multiple oil pipe tees (1-33) that cooperate with the first hydraulic cylinder (3-1) and the second hydraulic cylinder (3-2) are provided in the pressurized oil pipe (1-31). The oil inlet lines (3-11) at the oil inlets of the first hydraulic cylinder (3-1) and the second hydraulic cylinder (3-2) pass through the wire groove (1-5) and connect to the interface of the oil pipe tees (1-33) in the pressurized oil pipe (1-31). A pressure relief oil pipe (1-32) is provided in the second trapezoidal oil passage slot. A lower oil pipe end cap (1-35) is provided at the bottom of the pressure relief oil pipe (1-32). Multiple oil pipe tees (1-33) that cooperate with the first hydraulic cylinder (3-1) and the second hydraulic cylinder (3-2) are provided in the pressure relief oil pipe (1-32). The return oil line (3-12) at the return oil port of the first hydraulic cylinder (3-1) and the second hydraulic cylinder (3-2) passes through the wire groove (1-5) and connects to the interface of the oil pipe tees (1-33) in the pressure relief oil pipe (1-32). The pressurized oil pipe (1-31) and the pressure relief oil pipe (1-32) extend from the top of the reaming mechanism and are both connected to the hydraulic pump station (11).

6. A hydraulic vibration-free compaction and reaming device according to claim 2, characterized in that: The first hydraulic cylinder (3-1) and the second hydraulic cylinder (3-2) are provided with a connecting plate (5) at the rear end of the cylinder body. A pressure sensor (6) is provided on the connecting plate (5). The pressure sensor (6) is installed in contact with the bottom surface of the cylindrical blind hole (1-13). The pressure data line (6-1) of the pressure sensor (6) passes through the connecting plate (5), the cylindrical blind hole (1-13) and the wire groove (1-5) and is then laid along the trapezoidal oil passage groove (1-3). The semi-cylindrical base (1-11) is provided with a laser mounting hole (7-1) and a wire passage (7-2) connected to the laser mounting hole (7-1). A laser displacement sensor (7) is provided in the laser mounting hole (7-1). The laser emitted by the laser displacement sensor (7) passes through the laser mounting hole (7-1) and is projected onto the longitudinal center line of the inner arc surface of the first arc-shaped soil squeezing plate (2-1) and the second arc-shaped soil squeezing plate (2-2). The displacement data line (7-3) of the laser displacement sensor (7) is laid out along the trapezoidal oil passage groove (1-3) after passing through the wire passage (7-2); The pressure data line (6-1) of the pressure sensor (6) and the displacement data line (7-3) of the laser displacement sensor (7) extend out of the trapezoidal oil passage slot (1-3) and are connected to the data acquisition module (12).

7. A hydraulic vibration-free compaction and reaming device according to claim 5, characterized in that: A groove guard plate (1-6) is provided at the trapezoidal oil passage groove (1-3). Multiple connecting holes (1-10) are provided along the length direction on the semi-cylindrical base (1-11). The groove guard plate (1-6) and the semi-cylindrical base (1-11) are connected by screws, and the screws extend into the connecting holes (1-10). The two semi-cylindrical bases (1-11) are provided with a plurality of fastening holes (1-9) along the height direction, and fastening bolts are inserted into the fastening holes (1-9) of the two semi-cylindrical bases (1-11) for connection.

8. A hydraulic vibration-free compaction and reaming device according to claim 1, characterized in that: A circular slide rail (4-11) is provided on the bearing plate (4-1), and a roller (4-21) is provided at the bottom of the hoisting frame (4-2), with the roller (4-21) mounted on the circular slide rail (4-11).

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