Vibroflotation device for foundation treatment and filler-free vibroflotation method

Abstract

The invention belongs to the technical field of foundation treatment, and particularly relates to a vibroflotation device for foundation treatment and a filler-free vibroflotation method.The vibroflotation device comprises a guide rod, and a vibroflotation device and a vibroflotation head are installed on the guide rod; a water through hole is formed in the vibroflot, and an outlet of the water through hole is located at a water spraying port in the lower end of the vibroflot head; a sliding rod and a blocking block are installed in the vibropunch in a sliding mode, a fixing cylinder base is installed in the vibropunch, the blocking block is matched with the fixing cylinder base, and an elastic sleeve is installed in the fixing cylinder base. An elastic sheet is mounted on the plugging block, and the lower end of the elastic sheet extends into the water spraying port; the vibroflot is simple in structure, the water channel is controlled, closed and cleaned through cooperation between the blocking block and the fixed cylinder base, and it is avoided that silt enters the water channel of the vibroflot to block the water channel, and normal use of the vibroflot is affected.

Description

Technical Field

[0001] The present invention belongs to the technical field of foundation treatment, in particular to a vibro-impact device for foundation treatment and a filler-free vibro-impact method. Background Art

[0002] In construction using the vibroflotation method, vibrators are often used. During the operation of the vibrator, the horizontal vibration force is used to compact the surrounding soil, thereby consolidating the foundation, which is beneficial to improving the bearing capacity of the foundation, reducing settlement, increasing foundation stability, and improving the ability to resist earthquake liquefaction.

[0003] The environmental conditions at the vibratory compactor construction site are relatively harsh. There are not only high-strength soils mainly composed of sand and gravel, but also low-strength soils mainly composed of mud. During the vibratory compaction construction process, high water pressure and water volume are required for soils with higher strength, and low water pressure is required for soils with lower strength. During the hole-making process, high-pressure water and large water volume are required. After the hole-making stage is completed, when the design elevation is reached, the water pressure and water volume need to be reduced to a level that maintains a certain amount of backwater at the hole mouth but does not carry away a large amount of fine sand. Otherwise, the water outlet will easily be blocked, causing the vibratory compactor to fail to operate normally. In addition, the process of drilling through the waterway blocked by the vibratory compactor is complicated and labor-intensive.

[0004] During the construction process, there may be deviations in the control of the water pressure and water volume of the vibrator, resulting in insufficient water pressure and water volume, which in turn causes mud and sand to enter the water channel of the vibrator, causing blockage, affecting the normal operation of the vibrator, and even damaging the vibrator. Summary of the Invention

[0005] In order to make up for the shortcomings of the existing technology, the cooperation between the blocking block and the fixed cylinder seat is used to control, seal and clean the waterway, so as to prevent mud and sand from entering the waterway of the vibrator and causing blockage, thereby affecting the normal use of the vibrator. The present invention proposes a vibrating device for foundation treatment and a filler-free vibrating method.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: a vibratory impact device for foundation treatment according to the present invention comprises a guide rod, a vibratory impactor is mounted on the guide rod via a shock absorber, a vibratory impactor head is mounted on the vibratory impactor, and a submersible motor and an eccentric block are mounted in the vibratory impactor;

[0007] The side wall of the vibrator and the vibrating head are provided with interconnected water holes, a water pipe is installed in the guide rod, the upper end of the water pipe is connected to the ground water supply equipment, the lower end of the water pipe is connected to the water hole, and the outlet of the water hole is located at the lower end of the vibrating head, that is, the water outlet;

[0008] A sliding cavity is provided in the vibrating head, a sliding rod is installed in the sliding cavity, a blocking block is installed at the lower end of the sliding rod, a mounting cavity is provided in the vibrating head, a fixed cylinder seat is installed in the mounting cavity, the sliding rod passes through the middle of the fixed cylinder seat, the cross section of the fixed cylinder seat is an inverted L shape, the blocking block and the fixed cylinder seat match each other, an elastic sleeve is installed in the fixed cylinder seat, the elastic sleeve and the blocking head are in contact with each other, a limiting sleeve is installed at the upper end of the fixed cylinder seat, and the sliding rod is slidably installed in the limiting sleeve;

[0009] The installation cavity and the water hole are communicated with each other. An elastic sheet is installed on the lower surface of the blocking block. The elastic sheet is arc-shaped, and the lower end of the elastic sheet extends into the water outlet.

[0010] Preferably, a cavity is provided inside the elastic sleeve;

[0011] An interception groove is provided on the inner wall of the elastic sleeve. The cross section of the interception groove is triangular. The interception groove is located at one end of the elastic sleeve close to the blocking block.

[0012] Preferably, a guide groove is provided on the surface of the slide rod, and the guide groove is spiral-shaped;

[0013] The elastic sheet forms an angle with respect to the vertical direction.

[0014] Preferably, an expansion groove is provided in the vibrating head, the cross-section of the expansion groove is a triangle with rounded corners, the expansion groove is located below the fixed cylinder seat, and the expansion groove is located at the upper end of the water outlet;

[0015] A guide block is installed at the lower end of the blocking block, and the lower surface of the guide block is a curved surface;

[0016] The diameter of the guide block is larger than the inner diameter of the fixed cylinder seat, and the edge of the upper surface of the guide block is provided with an inclined guide surface.

[0017] Preferably, the guide block and the blocking block are connected via an elastic connecting piece, and there is relative shaking between the guide block and the blocking block;

[0018] The guide block is eccentrically mounted relative to the blocking block, and the elastic sheet is mounted on the blocking block via the guide block.

[0019] Preferably, a stopper is installed at the upper end of the sliding rod, and a magnetic block is installed on the bottom surface of the sliding cavity. The stopper is magnetic, and a mutually repulsive magnetic force exists between the stopper and the magnetic block.

[0020] Preferably, a groove is provided on the inner wall of the limiting sleeve, and the length direction of the groove is the same as the vertical direction.

[0021] A filler-free vibro-impact method for foundation treatment, the vibro-impact method being applicable to any of the above-mentioned vibro-impact devices for foundation treatment, the vibro-impact method comprising the following steps:

[0022] S1: Clean the ground of the foundation to be treated and mark the pile hole construction position on the ground according to the design requirements;

[0023] S2: Using a vibro-compaction device to perform vibro-compaction construction at the marked pile hole locations to complete the vibro-compaction compaction pile construction of the foundation; during the vibro-compaction construction process, the vibro-compaction device is used to simultaneously construct adjacent pile holes, and there are at least two adjacent pile holes;

[0024] S3: In step S2, during the vibro-flotation construction process, when the vibro-flotation device sinks or rises, there is a height difference between the vibro-flotation devices in adjacent pile holes.

[0025] The beneficial effects of the present invention are as follows:

[0026] When the water pressure and the water volume decrease, the water supply becomes unstable, and the external sediment invades the water outlet, the sediment will squeeze the elastic sheet, so that the block will be close to the fixed cylinder seat again, and the water hole will be sealed to prevent the sediment from invading the water channel in the reverse direction and causing the water channel to be blocked. At the same time, the block and the elastic sleeve cooperate with each other to prevent the sediment from being stuck in the gap between the block and the fixed cylinder seat, causing the block to be stuck, or the block and the fixed cylinder seat to be seriously worn, affecting the normal use of the vibratory flushing device. At the same time, when the water flows normally, it will impact the elastic sheet, and the vibration and swing of the elastic sheet will be used to stir and clean the sediment at the water outlet, further reducing the possibility of sediment invading the water hole in the reverse direction and causing the water channel to be blocked.

[0027] 2. The present invention describes a vibratory impact device and a filler-free vibratory impact method for foundation treatment. By setting an interception groove and an expansion groove, the silt entering the gap between the block and the fixed cylinder seat is accommodated and intercepted by the interception groove, thereby reducing the possibility of the silt entering the water hole in reverse. At the same time, the silt between the block and the fixed cylinder seat is easily cleaned by the impact of the water flow. At the same time, when the block and the fixed cylinder seat are close to each other and the water hole is closed, the mud and sediment entering the water outlet from the outside will be buffered and gathered at the expansion groove, avoiding the silt and mud from always gathering at the gap opening between the block and the fixed cylinder seat, ensuring that the block is easy to move and the water hole can be unobstructed.

[0028] 3. The present invention describes a vibro-impact device and a filler-free vibro-impact method for foundation treatment. By arranging a blocking block, a guide block, an elastic connector and an inclined guide surface, the guide block will also vibrate and shake when the vibrator vibrates, thereby driving the blocking block to move up and down. The movement of the blocking block caused by the impact of the water flow further stirs and cleans the water holes in the vibro-impact block, reducing the possibility of external sediment and mud invading the water holes in the reverse direction, causing the waterway to be blocked. At the same time, the upper surface of the blocking block and the inclined guide surface guide the water flow, so that the flowing water will impact the expansion tank, thereby cleaning the sediment gathered and accumulated in the expansion tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] Figure 1 is a perspective view of the vibroflotation device of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the vibroflotation device of the present invention;

[0032] Figure 3 It is a partial cross-sectional view of the vibro-punch head and vibro-punch device of the present invention;

[0033] Figure 4 It is a structural diagram of the blocking block and the fixed cylinder seat in the vibro-impact device of the present invention;

[0034] Figure 5 yes Figure 2 A partial enlarged view of the middle part;

[0035] Figure 6 yes Figure 2 A partial enlarged view of point B in the middle;

[0036] Figure 7 It is a block diagram of the steps of the filler-free vibroflotation method of the present invention;

[0037] In the figure: guide rod 1, shock absorber 11, vibrator 2, submersible motor 21, eccentric block 22, water pipe 23, water hole 24, vibrating head 3, water outlet 31, mounting cavity 32, expansion groove 33, sliding cavity 34, magnetic block 341, blocking block 4, sliding rod 41, stopper 411, limiting sleeve 42, guide groove 43, fixed cylinder seat 5, elastic sleeve 51, intercepting groove 511, guide block 6, elastic connector 61, inclined guide surface 62, elastic sheet 63. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0039] like Figures 1 to 7As shown, the vibratory device for foundation treatment of the present invention comprises a guide rod 1, a vibrator 2 is mounted on the guide rod 1 via a shock absorber 11, a vibratory head 3 is mounted on the vibrator 2, and a submersible motor 21 and an eccentric block 22 are mounted in the vibrator 2;

[0040] The side wall of the vibrating device 2 and the vibrating head 3 are provided with interconnected water holes 24. A water pipe 23 is installed in the guide rod 1. The upper end of the water pipe 23 is connected to the ground water supply equipment, and the lower end of the water pipe 23 is connected to the water hole 24. The outlet of the water hole 24 is located at the lower end of the vibrating head 3, that is, the water outlet 31;

[0041] A sliding cavity 34 is provided in the vibrating head 3, a sliding rod 41 is installed in the sliding cavity 34, a blocking block 4 is installed at the lower end of the sliding rod 41, a mounting cavity 32 is provided in the vibrating head 3, a fixed cylinder seat 5 is installed in the mounting cavity 32, the sliding rod 41 passes through the middle of the fixed cylinder seat 5, the cross section of the fixed cylinder seat 5 is in an inverted L shape, the blocking block 4 and the fixed cylinder seat 5 match each other, an elastic sleeve 51 is installed in the fixed cylinder seat 5, the elastic sleeve 51 and the blocking head are in contact with each other, a limiting sleeve 42 is installed at the upper end of the fixed cylinder seat 5, and the sliding rod 41 is slidably installed in the limiting sleeve 42;

[0042] The installation cavity 32 is connected to the water hole 24. An elastic piece 63 is installed on the lower surface of the block 4. The elastic piece 63 is arc-shaped, and the lower end of the elastic piece 63 extends into the water outlet 31.

[0043] During operation, the vibratory impact device is moved by a crane in the prior art until it reaches the designed pile hole position. After that, the submersible motor 21 in the vibratory impact device 2 is started, so that the submersible motor 21 drives the eccentric block 22 to rotate and generate vibration force. Then, with the cooperation of the crane, the vibratory impact device is sunk below the ground until it reaches the designed depth. In this process, the horizontal vibration force generated by the vibratory impact device 2 displaces and squeezes the soil and mud in the ground, thereby increasing the bearing capacity of the foundation, reducing the settlement, increasing the foundation stability and improving the earthquake liquefaction resistance, thereby completing the vibratory impact treatment at the pile hole on the foundation;

[0044] At the same time, during the sinking process of the vibroflotation device, the water source equipment on the ground transports water to the water hole 24 in the vibroflotation device through the water pipe 23, and then sprays water downward from the water outlet 31 at the lower end of the vibroflotation head 3, ensuring that the vibroflotation device can sink smoothly and ensuring sufficient water pressure and water supply, so that the vibroflotation compaction effect is good;

[0045] At the same time, during the sinking process of the vibratory flushing device, the water pressure and water volume provided by the water source equipment are sufficient, so that the amount and pressure of water entering the water through hole 24 and finally sprayed out from the water outlet 31 are both large. In this process, the water in the water through hole 24 will pass through the installation cavity 32 and the fixed cylinder seat 5 in turn, thereby impacting the block 4 in the installation cavity 32, causing the sliding rod 41 to slide downward in the sliding cavity 34, and the block 4 to move downward and away from the lower end of the fixed cylinder seat 5, so that the water can smoothly and stably pass through the water through hole 24 in the vibratory flushing head 3 and be sprayed out from the water outlet 31. At this time, due to the large water volume and water pressure, the mud and sediment in the soil are difficult to enter the water outlet 31, and reversely enter the water through hole 24, causing the water channel in the vibratory flushing device to be blocked, affecting the normal use of the vibratory flushing device;

[0046] At the same time, when the vibratory device sinks to the designed depth and rises, the water source equipment will reduce the water pressure and water volume, maintaining a certain level of backflow at the orifice but not carrying away a large amount of fine sand, thereby ensuring the hole quality and compaction effect. At this time, due to the reduction of water pressure and water volume, there is a possibility that the sediment will reversely enter the water outlet 31. At the same time, due to the reduction of water pressure and water volume, the impact of water flow on the block 4 will also be reduced, so that the sediment entering the water outlet 31 will squeeze and push the elastic sheet 63 in the water outlet 31, thereby driving the block 4 to move upward, so that the block 4 is upwardly close to the lower end of the fixed cylinder seat 5, so as to close the water through hole 24 in the vibratory head 3 at any time, and avoid in the case of unstable water pressure and water volume control or accidental power failure leading to water supply stoppage, the sediment reversely flows into the water channel of the vibratory device from the water outlet 31 and the water through hole 24 in the vibratory head 3, causing the water channel to be blocked by sediment, affecting the normal use of the vibratory device;

[0047] At the same time, due to the mutual cooperation between the blocking block 4 and the fixed cylinder seat 5, when the water pressure and water volume are reduced and the water supply is unstable, the blocking block 4 is impacted downward by the water flow. The distance the blocking block 4 moves downward is reduced, that is, the opening between the blocking block 4 and the fixed cylinder seat 5 is reduced, reducing the possibility of the mud and sand in the pile hole entering the water through hole 24 above the fixed cylinder seat 5 in reverse, avoiding the possibility of the water channel in the vibrating device being blocked. At the same time, since the elastic sleeve 51 is installed on the fixed cylinder seat 5, the elastic sheet 63 in the water outlet 31 is squeezed and pushed by the mud and sand, sand and gravel, driving the blocking block 4 to retract upward, so that when the blocking block 4 and the fixed cylinder seat 5 come into contact with each other, the blocking block 4 will come into contact with and be pressed into the elastic sleeve 51, thereby improving the sealing effect of the mutual cooperation between the blocking block 4 and the fixed cylinder seat 5, and preventing the mud and sand in the pile hole from continuing to enter the water through hole 24, resulting in the blockage of the water channel in the vibrating device.

[0048] At the same time, due to the elasticity of the elastic sleeve 51, during the process of the block 4 contacting and being pressed into the elastic sleeve 51, a relatively large range of movement exists in the gap between the block 4 and the fixed cylinder seat 5. That is, the elastic deformation of the elastic sleeve 51 causes the gap between the block 4 and the fixed cylinder seat 5 to change, thereby containing and embedding the mud and sand particles that may enter the gap between the block 4 and the fixed cylinder seat 5, so that the mud and sand will not be stuck in the gap between the two, thereby preventing the mud and sand from causing the relative movement between the block 4 and the fixed cylinder seat 5 to be stuck or blocked, and preventing the block 4 from being driven by the impact of the water flow and forcibly running over or sliding over the mud and sand in the gap, causing excessive wear of the block 4 and the fixed cylinder seat 5, affecting the fit between the block 4 and the fixed cylinder seat 5 and the sealing effect of the water through hole 24;

[0049] At the same time, since an elastic sheet 63 is installed at the lower end of the block 4, when water is sprayed out from the water outlet 31, the water flow will also have an impact effect on the arc-shaped elastic sheet 63, causing the elastic sheet 63 to vibrate and swing, thereby causing the vibrating and swinging elastic sheet 63 to stir the interior of the water outlet 31, and clean up some of the mud and sand that has entered the water outlet 31 or adhered to the inner wall of the water outlet 31, so that this part of the mud and sand is discharged into the pile hole outside the vibrating head 3 together with the water flow, further reducing the possibility of external mud and sand reversely invading the water outlet 31 and the water hole 24 when the water pressure and water volume are reduced and the water supply is unstable, thereby preventing mud and sand from entering the waterway of the vibrating device, causing the waterway to be blocked, and affecting the normal use of the vibrating device.

[0050] As an embodiment of the present invention, a cavity is provided inside the elastic sleeve 51;

[0051] An interception groove 511 is provided on the inner wall of the elastic sleeve 51. The cross section of the interception groove 511 is triangular. The interception groove 511 is located at one end of the elastic sleeve 51 close to the block 4.

[0052] Since the elastic sleeve 51 has a cavity inside, the elastic sleeve 51 is more likely to deform after being pressurized. Therefore, when the water pressure and water volume decrease and the water supply is unstable, when the blocking block 4 contacts and is pressed into the elastic sleeve 51, the elastic sleeve 51 can be close to the surface of the blocking block 4 and cooperate with the mutual contact between the blocking block 4 and the inverted L-shaped horizontal part of the fixed cylinder seat 5, thereby fully ensuring the sealing effect of the blocking block 4 and the fixed cylinder seat 5 on the water hole 24 in the vibrating head 3, and preventing the mud and sand outside the vibrating head 3 and in the pile hole from entering the water channel in the vibrating device from the water outlet 31 through the water hole 24, causing blockage of the water channel and affecting the normal use of the vibrating device.

[0053] At the same time, when mud and sand squeeze into or get stuck in the gap between the block 4 and the fixed cylinder seat 5, the cavity provided allows the elastic sleeve 51 to easily deform elastically, reducing the possibility of mud and sand getting stuck in the block 4 or causing significant wear between the block 4 and the fixed cylinder seat 5;

[0054] At the same time, when the mud and sand are stuck in the gap between the block 4 and the fixed cylinder seat 5, as the block 4 moves upward, the water hole 24 in the vibrating head 3 is quickly closed, thereby preventing the mud and sand from moving upward again and entering the water channel in the vibrating device 2. Therefore, the mud and sand stuck in the gap between the block 4 and the fixed cylinder seat 5 are mostly located near the end of the elastic sleeve 51 near the water outlet 31. Since the elastic sleeve 51 is provided with an interception groove 511, the mud and sand stuck between the block 4 and the fixed cylinder seat 5 can easily enter the interception groove 511. In order to intercept the continued upward movement of sediment, further reduce the possibility of sediment reversely entering the waterway in the vibratory device, avoid the possibility of waterway blockage and affecting the normal use of the vibratory device. At the same time, the sediment is intercepted and contained by the interception groove 511, reducing the extrusion and friction between the block 4 and the sediment, thereby reducing the wear of the block 4 and the elastic sleeve 51. At the same time, it can also facilitate the flushing effect of the water flow on the sediment that may exist in the water hole 24 when the water pressure and water volume increase or the water supply is stable, thereby ensuring that the water hole 24 is clean and unobstructed.

[0055] As an embodiment of the present invention, a guide groove 43 is provided on the surface of the slide rod 41, and the guide groove 43 is in a spiral shape;

[0056] The elastic piece 63 has an angle with respect to the vertical direction;

[0057] When the water pressure and water volume are relatively large, and the water supply is stable, the water flow passing through the installation cavity 32 will be guided by the guide groove 43 on the surface of the slide rod 41, and then the slide rod 41 will rotate through the action of the spiral guide groove 43. In this process, the block 4 will also be driven by the slide rod 41 to rotate, thereby further reducing the possibility of mud and sand getting stuck and blocking the gap between the block 4 and the fixed cylinder seat 5. At the same time, since the block 4 will move downward and rotate under the impact of the water flow, the water flow sprayed from the water outlet 31 will have a tendency to rotate, increasing the force of the water flow on the mud and sand that accidentally enters the water outlet 31 and the water hole 24 in the vibrating head 3, thereby promoting the discharge of mud and sand that accidentally enters, and avoiding the mud and sand from reversely entering the water channel of the vibrating device when the water pressure and water volume are reduced or the water supply is unstable, causing the water channel to be blocked and affecting the normal use of the vibrating device;

[0058] At the same time, since the lower end of the elastic sheet 63 extends into the water outlet 31 and there is an angle between the elastic sheet 63 and the vertical direction, when the water flows through the water outlet 31, the water flow will impact the elastic sheet 63, thereby causing the elastic sheet 63 to rotate around the slide rod 41 as the center line, and causing the elastic sheet 63 itself to vibrate or swing. In this case, the rotation of the elastic sheet 63 cooperates with the action of the guide groove 43 on the slide rod 41, further causing the slide rod 41 and the block 4 to rotate in the mounting cavity 32, thereby reducing the possibility of mud and sand getting stuck in the gap between the block 4 and the fixed cylinder seat 5, and the possibility of mud and sand entering the water outlet 31 being carried out by the water flow, thereby avoiding the possibility of mud and sand flowing back and entering the waterway in the vibrating device, avoiding the blockage of the waterway and affecting the normal use of the vibrating device.

[0059] As an embodiment of the present invention, an expansion groove 33 is opened in the vibrating head 3. The cross-section of the expansion groove 33 is a rounded triangle. The expansion groove 33 is located below the fixed cylinder seat 5 and is located at the upper end of the water outlet 31.

[0060] A guide block 6 is installed at the lower end of the blocking block 4, and the lower surface of the guide block 6 is a curved surface;

[0061] The diameter of the guide block 6 is larger than the inner diameter of the fixed cylinder seat 5, and the edge of the upper surface of the guide block 6 is provided with an inclined guide surface 62;

[0062] When the water pressure and water volume decrease or the water supply is unstable, the mud and sand in the pile hole may reversely invade the water outlet 31 or the water through hole 24 in the vibrating head 3. At this time, the block 4 will move upward and reduce the gap between the block 4 and the fixed cylinder seat 5 to prevent the external mud and sand from passing over the block 4 and entering the water through hole 24, thereby causing most of the mud and sand that enters the water outlet 31 to accumulate at the position below the block 4. At this time, by providing an expansion groove 33 in the vibrating head 3, the expansion groove 33 can be used to collect and accommodate the mud and sand that enters the water outlet 31, thereby preventing the mud and sand from continuing to accumulate and concentrate in the gap or opening between the block 4 and the fixed cylinder seat 5, affecting the normal passage of water or the sealing effect of the block 4 and the fixed cylinder seat 5 on the water through hole 24;

[0063] At the same time, since the diameter of the expansion groove 33 is relatively larger than the diameter of the water outlet 31, after the water flows through the fixed cylinder seat 5, the water flows through the location of the expansion groove 33, which will first expand and then compress, similar to the effect of a Venturi tube, thereby accelerating the water flow ejected from the water outlet 31, improving the impact and flushing effect of the water flow after being ejected, and making the water flow have a better relay effect on the elastic sheet 63, thereby promoting the movement of the elastic sheet 63;

[0064] At the same time, since the guide block 6 is installed at the lower end of the blocking block 4, and the lower surface of the guide block 6 is an arc surface, when the blocking block 4 and the fixed cylinder seat 5 are in contact with each other or the water through hole 24 is closed, the muddy water and sediment entering from the outside will be guided by the lower surface of the guide block 6 when pouring into the water outlet 31, so that they are concentrated in the direction of the expansion groove 33, avoiding concentration and gathering at the blocking block 4, affecting the normal movement of the blocking block 4, and having an adverse effect on the gap between the blocking block 4 and the fixed cylinder seat 5;

[0065] At the same time, since the diameter of the guide block 6 is larger than the inner diameter of the fixed cylinder seat 5, and an inclined guide surface is provided on the edge of the upper surface of the guide block 6, when the water pressure and water volume are large or the water supply is stable, the water flow impacts the block 4, causing the block 4 to move downward, and the block 4 and the guide block 6 will be at the same height as the expansion groove 33, and then the water flow passing through the fixed cylinder seat 5 will impact the upper surface of the block 4 and flow in the horizontal direction, that is, the water flow will flow horizontally and rush into the expansion groove 33. After that, the water flow continues to downward and will contact the inclined guide surface 62 on the guide block 6, so that the water flow is further guided by the inclined guide surface 62, so that the water flow flows obliquely in the direction of the expansion groove 33, so that the mud and sand gathered and stayed in the expansion groove 33 are washed by the water flow, so that the mud and sand that may exist in the expansion groove 33 are washed and cleaned.

[0066] As an embodiment of the present invention, the guide block 6 and the blocking block 4 are connected by an elastic connecting member 61, and there is relative shaking between the guide block 6 and the blocking block 4;

[0067] The guide block 6 is eccentrically mounted relative to the blocking block 4, and the elastic piece 63 is mounted on the blocking block 4 via the guide block 6;

[0068] Since the guide block 6 is connected by the elastic connecting piece 61 and the guide block 6 is eccentrically installed, when the submersible motor 21 in the vibrator 2 drives the eccentric block 22 to rotate and generate vibration, the guide block 6 will also be affected and acted upon by the vibration, causing the guide block 6 to swing or shake. At the same time, since the guide block 6 is installed on the blocking block 4, the blocking block 4 is installed on the sliding rod 41, and the sliding rod 41 is slidably installed in the limiting sleeve 42 and the sliding cavity 34, when the guide block 6 swings or shakes, the guide block 6 will drive the blocking block 4 to move up and down, causing the gap between the blocking block 4 and the fixed cylinder seat 5 to change, thereby preventing the relative position of the blocking block 4 in the fixed cylinder seat 5 from remaining unchanged, and the possibility of mud and sand reversely invading the water through hole 24. At the same time, when the blocking block 4 is driven up and down by the guide block 6, the mud and sand that may exist in the gap between the blocking block 4 and the fixed cylinder seat 5 is stirred, thereby promoting the discharge of mud and sand, and preventing mud and sand from continuing to stay or getting stuck in the gap between the two.

[0069] At the same time, since the guide block 6 is located below the blocking block 4 and the guide block 6 will swing or vibrate, the swing or vibration of the guide block 6 can be used to stir the water flow in the space below the fixed cylinder seat 5, and to stir the mud and sand close to the fixed cylinder seat 5. In combination with the flowing water flow and the effect of the expansion groove 33, the possibility of mud and sand reversely entering the water hole 24 is reduced, thereby avoiding the water channel of the vibratory device being blocked by mud and sand, affecting the normal use of the vibratory device.

[0070] As an embodiment of the present invention, a stopper 411 is installed at the upper end of the slide rod 41, and a magnetic block 341 is installed on the bottom surface of the sliding cavity 34. The stopper 411 is magnetic, and a mutually repulsive magnetic force exists between the stopper 411 and the magnetic block 341.

[0071] Due to the magnetic repulsion between the stopper 411 and the magnetic block 341, the slide bar 41 tends to move upward, that is, the block 4 tends to approach the fixed cylinder seat 5, so that the block 4 and the fixed cylinder seat 5 cooperate with each other to close the water hole 24. Therefore, when the water pressure and water volume decrease or the water supply is unstable, when the impact force of the water flow on the block 4 decreases, the block 4 is easy to approach the fixed cylinder seat 5 and close the water hole 24.

[0072] At the same time, due to the magnetic force between the stop block 411 and the magnetic block 341, when the guide block 6 swings or vibrates, it is easy to drive the blocking block 4 to move up and down, so that the blocking block 4 stirs the water flow or sediment close to the lower end of the fixed cylinder seat 5, and cooperates with the flowing water to promote the discharge of sediment entering the water outlet 31, reducing the possibility of sediment entering the water through hole 24 in reverse.

[0073] As an embodiment of the present invention, a groove is formed on the inner wall of the limiting sleeve 42, and the length direction of the groove is the same as the vertical direction;

[0074] The grooves provided facilitate the passage of water in the installation cavity 32, thereby allowing the water to flow through the guide grooves 43 on the slide bar 41, and driving the slide bar 41 to rotate through the action of the guide grooves 43. At the same time, by providing grooves on the inner wall of the limit sleeve 42, the contact area between the limit sleeve 42 and the slide bar 41 is relatively reduced, reducing the friction between the two and reducing the wear. At the same time, through the mutual cooperation of the grooves and the guide grooves 43, a relatively large gap is created between the limit sleeve 42 and the slide bar 41. When mud and sand particles accidentally enter the gap between the limit sleeve 42 and the slide bar 41, the mud and sand particles can enter the gap formed by the mutual cooperation of the grooves and the guide grooves 43, thereby facilitating the discharge of mud and sand particles, and avoiding mud and sand particles from getting stuck between the limit sleeve 42 and the slide bar 41, affecting the normal movement of the slide bar 41.

[0075] A filler-free vibro-impact method for foundation treatment, the vibro-impact method being applicable to any of the above-mentioned vibro-impact devices for foundation treatment, the vibro-impact method comprising the following steps:

[0076] S1: Clean the ground of the foundation to be treated and mark the pile hole construction position on the ground according to the design requirements;

[0077] S2: Using a vibro-compaction device to perform vibro-compaction construction at the marked pile hole locations to complete the vibro-compaction compaction pile construction of the foundation; during the vibro-compaction construction process, the vibro-compaction device is used to simultaneously construct adjacent pile holes, and there are at least two adjacent pile holes;

[0078] S3: In step S2, during the vibro-flotation construction process, when the vibro-flotation device is sinking or rising, there is a height difference between the vibro-flotation devices in adjacent pile holes;

[0079] Among them, by carrying out vibro-compaction construction simultaneously on multiple adjacent pile holes, the scope of action of a single vibro-compaction is increased, the effect of vibro-compaction is improved, and the bearing capacity of the foundation is improved. At the same time, the vibro-compaction devices in adjacent pile holes have a height difference between them during the sinking or rising process, so that the vibro-compaction ranges of the vibro-compaction devices in adjacent pile holes are dislocated or crossed with each other, so that the scopes of action of vibro-compaction in adjacent pile holes will penetrate and mix, thereby improving the effect of vibro-compaction.

[0080] The specific workflow is as follows:

[0081] During operation, the vibratory impact device is moved by a crane in the prior art until it reaches the designed pile hole position. Then, the submersible motor 21 in the vibratory impact device 2 is started, so that the submersible motor 21 drives the eccentric block 22 to rotate and generate vibration force. Then, with the cooperation of the crane, the vibratory impact device is sunk below the ground until it reaches the designed depth, completing the vibratory impact treatment.

[0082] At the same time, during the sinking process of the vibroflotation device, the water source equipment on the ground transports water to the water hole 24 in the vibroflotation device through the water pipe 23, and then sprays water downward from the water outlet 31 at the lower end of the vibroflotation head 3;

[0083] At the same time, water provided by the water source equipment enters the water hole 24 through the water pipe 23. The water in the water hole 24 passes through the installation cavity 32 and the fixed cylinder seat 5 in sequence, impacting the block 4, causing the slide rod 41 to slide downward in the sliding cavity 34, and the block 4 to move downward and away from the lower end of the fixed cylinder seat 5, so that the water passes through the water hole 24 and is sprayed out from the water outlet 31.

[0084] At the same time, due to the reduction in water pressure and water volume, the impact of water flow on the blocking block 4 will also be reduced, so that the mud and sand entering the water outlet 31 will squeeze and push the elastic sheet 63 in the water outlet 31, thereby driving the blocking block 4 to move upward, so that the blocking block 4 is upwardly close to the lower end of the fixed cylinder seat 5, so as to close the water hole 24 in the vibrating head 3 at any time, and prevent the mud and sand from flowing back from the water outlet 31 and the water hole 24 in the vibrating head 3 into the waterway of the vibrating device when the water pressure and water volume control are unstable or the water supply is stopped due to an unexpected power outage;

[0085] At the same time, when the water pressure and water volume decrease and the water supply is unstable, the force exerted on the block 4 by the water flow downward is reduced, so that the distance the block 4 moves downward is reduced, that is, the opening between the block 4 and the fixed cylinder seat 5 is reduced. At the same time, since the fixed cylinder seat 5 is installed with an elastic sleeve 51, the elastic sheet 63 in the water outlet 31 is squeezed and pushed by the mud and gravel, driving the block 4 to retract upward. When the block 4 and the fixed cylinder seat 5 come into contact with each other, the block 4 will contact and be pressed into the elastic sleeve 51.

[0086] At the same time, due to the elasticity of the elastic sleeve 51, during the process of the block 4 contacting and being pressed into the elastic sleeve 51, a relatively large range of movement exists in the gap between the block 4 and the fixed cylinder seat 5. That is, the elastic deformation of the elastic sleeve 51 causes the gap between the block 4 and the fixed cylinder seat 5 to change, thereby containing and embedding mud and sand particles that may enter the gap between the block 4 and the fixed cylinder seat 5, so that the mud and sand will not be stuck in the gap between the two, thereby preventing the mud and sand from causing jamming or blocking the relative movement between the block 4 and the fixed cylinder seat 5, and preventing the block 4 from being driven by the impact of the water flow and forcibly running over or sliding over the mud and sand in the gap, causing excessive wear of the block 4 and the fixed cylinder seat 5.

[0087] At the same time, since the elastic sheet 63 is installed at the lower end of the block 4, when water is sprayed out from the water outlet 31, the water flow will also have an impact effect on the arc-shaped elastic sheet 63, causing the elastic sheet 63 to vibrate and swing, stirring the interior of the water outlet 31, and cleaning out some of the sediment that has entered the water outlet 31 or adhered to the inner wall of the water outlet 31;

[0088] When the water pressure and water volume decrease and the water supply is unstable, the elastic sleeve 51 can be close to the surface of the block 4 and cooperate with the mutual contact between the block 4 and the inverted L-shaped horizontal part of the fixed cylinder seat 5 during the process of contacting and pressing the block 4 into the elastic sleeve 51, thereby fully ensuring the sealing effect of the block 4 and the fixed cylinder seat 5 on the water hole 24 in the vibrating head 3;

[0089] At the same time, when mud and sand squeeze into or get stuck in the gap between the block 4 and the fixed cylinder seat 5, the elastic sleeve 51 is easily elastically deformed through the cavity.

[0090] At the same time, the mud and sand stuck in the gap between the blocking block 4 and the fixed cylinder seat 5 are mostly located near the end of the elastic sleeve 51 close to the water outlet 31. Since the elastic sleeve 51 is provided with an interception groove 511, the mud and sand stuck between the blocking block 4 and the fixed cylinder seat 5 can easily enter the interception groove 511. At the same time, the interception groove 511 intercepts and contains the mud and sand, reducing the squeezing and friction between the blocking block 4 and the mud and sand, and reducing the wear of the blocking block 4 and the elastic sleeve 51. At the same time, it can also facilitate the flushing effect of the water flow on the mud and sand that may exist in the water hole 24 when the water pressure and water volume increase or the water supply is stable.

[0091] When the water pressure and water volume are relatively large and the water supply is stable, the water flow passing through the installation cavity 32 will be guided by the guide groove 43 on the surface of the slide rod 41, and then the slide rod 41 and the block 4 will rotate through the action of the spiral guide groove 43;

[0092] At the same time, when the water flows through the water outlet 31, the water flow will impact the elastic piece 63, thereby causing the elastic piece 63 to rotate around the slide rod 41 as the center line, and causing the elastic piece 63 itself to vibrate or swing. In this case, the rotation of the elastic piece 63 cooperates with the action of the guide groove 43 on the slide rod 41, further causing the slide rod 41 and the block 4 to rotate in the installation cavity 32, and promoting the possibility that the mud and sand entering the water outlet 31 will be carried out by the water flow;

[0093] When the water pressure and water volume decrease or the water supply is unstable, the block 4 will move upward, reducing the gap between the block 4 and the fixed cylinder seat 5. At this time, by providing an expansion groove 33 in the vibrating head 3, the expansion groove 33 can be used to collect and accommodate the sediment entering the water outlet 31, thereby preventing the sediment from continuously accumulating and concentrating in the gap or opening between the block 4 and the fixed cylinder seat 5.

[0094] At the same time, since the diameter of the expansion groove 33 is relatively larger than the diameter of the water outlet 31, after the water flows through the fixed cylinder seat 5, when the water flows through the location of the expansion groove 33, it will first expand and then compress, similar to the effect of a Venturi tube, thereby accelerating the water flow ejected from the water outlet 31;

[0095] At the same time, since the guide block 6 is installed at the lower end of the blocking block 4, and the lower surface of the guide block 6 is an arc surface, when the blocking block 4 and the fixed cylinder seat 5 are in contact with each other or the water through hole 24 is closed, the muddy water and sediment entering from the outside will be guided by the lower surface of the guide block 6 when pouring into the water outlet 31, so that it is concentrated in the direction of the expansion groove 33;

[0096] At the same time, since the diameter of the guide block 6 is larger than the inner diameter of the fixed cylinder seat 5, and an inclined guide surface is provided on the edge of the upper surface of the guide block 6, when the water pressure and water volume are large or the water supply is stable, the water flow impacts the blocking block 4, causing the blocking block 4 to move downward. The blocking block 4 and the guide block 6 will be at the same height as the expansion groove 33, and then the water flow passing through the fixed cylinder seat 5 will impact the upper surface of the blocking block 4 and flow in the horizontal direction, that is, the water flow will flow laterally and rush into the expansion groove 33. After that, the water flow continues to downward and contacts the inclined guide surface 62 on the guide block 6, so that the water flow is further guided by the inclined guide surface 62, so that the water flow flows obliquely in the direction of the expansion groove 33, so that the sediment gathered and retained in the expansion groove 33 is washed away by the water flow;

[0097] Since the guide block 6 is connected via the elastic connector 61 and is eccentrically mounted, when the submersible motor 21 in the vibrator 2 drives the eccentric block 22 to rotate and generate vibration, the guide block 6 is also affected and affected by the vibration, causing the guide block 6 to swing or shake, thereby driving the blocking block 4 to move up and down, causing the gap between the blocking block 4 and the fixed cylinder seat 5 to change.

[0098] Due to the magnetic repulsion between the stopper 411 and the magnetic block 341, the slide bar 41 tends to move upward, that is, the block 4 tends to approach the fixed cylinder seat 5, so that the block 4 and the fixed cylinder seat 5 cooperate with each other to close the water hole 24. When the water pressure and water volume decrease or the water supply is unstable, the impact of the water flow on the block 4 decreases, and the block 4 easily approaches the fixed cylinder seat 5 to close the water hole 24.

[0099] At the same time, due to the magnetic force between the stopper 411 and the magnetic block 341, when the guide block 6 swings or vibrates, it is easy to drive the blocking block 4 to move up and down, so that the blocking block 4 stirs the water flow or sediment close to the lower end of the fixed cylinder seat 5, and cooperates with the flowing water to promote the discharge of sediment entering the water outlet 31;

[0100] The grooves provided facilitate the passage of water in the installation cavity 32, thereby enabling the water to flow through the guide grooves 43 on the slide bar 41, and the slide bar 41 is driven to rotate by the action of the guide grooves 43. At the same time, by providing the grooves on the inner wall of the limiting sleeve 42, the contact area between the limiting sleeve 42 and the slide bar 41 is relatively reduced, thereby reducing the friction between the two. At the same time, by the mutual cooperation of the grooves and the guide grooves 43, a relatively large gap is formed between the limiting sleeve 42 and the slide bar 41, so that when mud and sand particles accidentally enter the gap between the limiting sleeve 42 and the slide bar 41, the mud and sand particles can enter the gap formed by the mutual cooperation of the grooves and the guide grooves 43, thereby facilitating the discharge of mud and sand particles.

[0101] By carrying out vibro-compaction construction simultaneously on multiple adjacent pile holes, the scope of action of a single vibro-compaction is increased, the effect of vibro-compaction is improved, and the bearing capacity of the foundation is improved. At the same time, when the vibro-compaction devices in adjacent pile holes sink or rise, there is a height difference between the vibro-compaction devices, which causes the vibro-compaction scopes of the vibro-compaction devices in adjacent pile holes to be dislocated or crossed with each other, so that the scopes of action of the vibro-compaction in adjacent pile holes will be infiltrated and mixed, thereby improving the effect of the vibro-compaction.

[0102] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A vibro-impact device for foundation treatment, comprising a guide rod (1), a vibro-impact device (2) mounted on the guide rod (1) via a shock absorber (11), a vibro-impact device (3) mounted on the vibro-impact device (2), and a submersible motor (21) and an eccentric block (22) mounted in the vibro-impact device (2); Its characteristics are: The side wall of the vibrating device (2) and the vibrating head (3) are provided with water holes (24) that are interconnected. A water pipe (23) is installed in the guide rod (1). The upper end of the water pipe (23) is connected to the ground water supply equipment. The lower end of the water pipe (23) is connected to the water hole (24). The outlet of the water hole (24) is located at the lower end of the vibrating head (3), i.e., the water outlet (31). A sliding cavity (34) is provided in the vibrating head (3), a sliding rod (41) is installed in the sliding cavity (34), a blocking block (4) is installed at the lower end of the sliding rod (41), a mounting cavity (32) is provided in the vibrating head (3), a fixed cylinder seat (5) is installed in the mounting cavity (32), the sliding rod (41) passes through the middle of the fixed cylinder seat (5), the cross section of the fixed cylinder seat (5) is in an inverted L shape, the blocking block (4) and the fixed cylinder seat (5) match each other, an elastic sleeve (51) is installed in the fixed cylinder seat (5), the elastic sleeve (51) and the blocking head are in contact with each other, a limiting sleeve (42) is installed at the upper end of the fixed cylinder seat (5), and the sliding rod (41) is slidably installed in the limiting sleeve (42); The installation cavity (32) and the water hole (24) are communicated with each other. An elastic piece (63) is installed on the lower surface of the blocking block (4). The elastic piece (63) is arc-shaped, and the lower end of the elastic piece (63) extends into the water outlet (31).

2. A vibro-impact device for foundation treatment according to claim 1, characterized in that: A cavity is formed inside the elastic sleeve (51); An interception groove (511) is provided on the inner wall of the elastic sleeve (51), the cross section of the interception groove (511) is triangular, and the interception groove (511) is located at one end of the elastic sleeve (51) close to the blocking block (4).

3. The vibro-impact device for foundation treatment according to claim 1, characterized in that: A guide groove (43) is provided on the surface of the slide rod (41), and the guide groove (43) is in a spiral shape; The elastic piece (63) has an angle relative to the vertical direction.

4. The vibro-impact device for foundation treatment according to claim 1, characterized in that: An expansion groove (33) is provided in the vibrating head (3), the cross-section of the expansion groove (33) being a triangle with rounded corners, the expansion groove (33) being located below the fixed cylinder seat (5), and the expansion groove (33) being located at the upper end of the water outlet (31); A guide block (6) is installed at the lower end of the blocking block (4), and the lower surface of the guide block (6) is a curved surface; The diameter of the guide block (6) is larger than the inner diameter of the fixed cylinder seat (5), and the edge of the upper surface of the guide block (6) is provided with an inclined guide surface (62).

5. A vibro-impact device for foundation treatment according to claim 4, characterized in that: The guide block (6) and the blocking block (4) are connected via an elastic connecting member (61), and there is relative shaking between the guide block (6) and the blocking block (4); The guide block (6) is eccentrically mounted relative to the blocking block (4), and the elastic piece (63) is mounted on the blocking block (4) via the guide block (6).

6. A vibro-impact device for foundation treatment according to claim 5, characterized in that: A stopper (411) is installed at the upper end of the slide rod (41), and a magnetic block (341) is installed on the bottom surface of the slide cavity (34). The stopper (411) is magnetic, and a mutually repulsive magnetic force exists between the stopper (411) and the magnetic block (341).

7. The vibro-impact device for foundation treatment according to claim 1, characterized in that: A groove is provided on the inner wall of the limiting sleeve (42), and the length direction of the groove is the same as the vertical direction.

8. A filler-free vibroflotation method for foundation treatment, characterized by: The vibration method is applicable to a vibration device for foundation treatment according to any one of claims 1 to 7 above, and the vibration method comprises the following steps: S1: Clean the ground of the foundation to be treated and mark the pile hole construction position on the ground according to the design requirements; S2: Using a vibro-compaction device to perform vibro-compaction construction at the marked pile hole locations to complete the vibro-compaction compaction pile construction of the foundation; during the vibro-compaction construction process, the vibro-compaction device is used to simultaneously construct adjacent pile holes, and there are at least two adjacent pile holes; S3: In step S2, during the vibro-flotation construction process, when the vibro-flotation device sinks or rises, there is a height difference between the vibro-flotation devices in adjacent pile holes.

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