CN120945876A - A vibratory impact device - Google Patents

Abstract

This application discloses a vibratory compaction device, relating to the field of engineering machinery technology. The vibratory compaction device includes a frame assembly, a sleeve-pulling device, and a vibratory compaction unit. In this device, the frame assembly is equipped with a column, and the column has a first guide rail. The sleeve-pulling device is vertically mounted on the first guide rail for pulling out sleeves. The vibratory compaction unit is also vertically mounted on the first guide rail and works in conjunction with the sleeve-pulling device for vibratory compaction of the foundation. The sleeve-pulling device and the vibratory compaction unit work together. This vibratory compaction device can achieve coordinated sleeve pulling during vibratory compaction, resulting in not only good pile quality but also high construction efficiency.

Description

Vibroflotation equipment

Technical Field

The application relates to the technical field of engineering machinery, in particular to vibroflotation equipment.

Background

The vibroflotation method is a foundation treatment technology widely applied to soft foundation reinforcement, and is characterized in that a vibroflotation device with a guide rod is hung by a crane or a drilling machine, the soft foundation is vibrated and compacted by using high-frequency exciting force of the vibroflotation device, or holes are vibroflotation in soil layers, broken stones are filled in the holes in sections and are vibrated and compacted, and finally a composite foundation formed by the vibroflotation broken stone piles and surrounding soil bodies is formed, so that the bearing capacity of the foundation is improved, the overall stability is enhanced, and the earthquake liquefaction resistance is improved.

With the expansion of engineering construction scale, vibroflotation method gradually extends to large depth and complex geological conditions. When the depth of a designed pile exceeds the one-time hole forming capability of the existing vibroflotation device, or a stratum difficult to be directly vibroflotated and penetrated by a hard layer, a pebble layer, a thick sand layer and the like is met, the conventional process needs to adopt a hole guiding drill to pre-form holes and put into a wall protection sleeve, then the hole guiding device is removed, the vibroflotation device is replaced, the vibroflotation drilling is continued to reach the designed depth, and finally the materials are fed and extruded into the pile.

However, the sleeve is pulled out section by section while the stone is crushed by vibration. In the prior art, independent equipment (such as a rotary drilling rig and a crane) is generally adopted to complete tube drawing, and a vibroflotation device is required to be completely moved away from a hole site before tube drawing each time, so that a cross operation mode of vibroflotation, machine moving, tube drawing, return and vibroflotation is formed. This mode suffers from the following drawbacks:

1. If the longer sleeve is pulled out at one time, the hole wall loses support, holes collapse easily in loose or water-rich stratum, so that the diameter of the pile is reduced, the pile is broken, even the hole is wasted, the hole needs to be punched again, and the pile forming quality is difficult to ensure;

2. If the sections are adopted for multiple tube drawing, frequent machine moving and returning are needed, each tube drawing is accompanied with one-time equipment transposition and orifice butt joint, the auxiliary operation time is multiplied, the construction period of a single pile is greatly prolonged, and the work efficiency is obviously reduced;

3. the cross operation also brings the problems of large equipment occupation, complex site scheduling, increased energy consumption, increased construction cost and the like, and severely restricts the efficient application of the vibroflotation method under ultra-deep and complex geological conditions.

Therefore, a new process and a matching device capable of realizing continuous and controllable tube drawing, avoiding hole collapse and reducing the number of machine moving times while vibrating, punching and compacting are needed in the prior art so as to achieve the aim of considering pile forming quality and construction efficiency.

Disclosure of Invention

The application aims to provide vibroflotation equipment which can realize collaborative sleeve pulling during vibroflotation, and has the advantages of good pile body quality and high construction efficiency.

To achieve the above object, the present application provides a vibroflotation device comprising:

The machine body assembly is provided with a stand column, and the stand column is provided with a first guide rail;

The sleeve pulling device is arranged on the first guide rail in a lifting manner and is used for pulling out the sleeve;

The vibrating and punching device is arranged on the first guide rail in a lifting manner and is matched with the sleeve pulling device in a penetrating manner, and is used for vibrating and punching the foundation, and the sleeve pulling device and the vibrating and punching device work cooperatively.

In some embodiments, the upright is further provided with a second guide rail, and the vibroflotation device further comprises:

the sleeve lowering device is arranged on the second guide rail in a lifting manner and used for lowering the sleeve;

the hole guiding device is arranged on the second guide rail in a lifting manner, is matched with the casing pipe pushing device in a penetrating manner, and is used for drilling a hole, and the hole guiding device and the casing pipe pushing device work cooperatively;

when the machine body assembly is positioned at the first position, the hole guiding device and the sleeve pipe discharging device are in a working state, and when the machine body assembly is switched to the second position, the vibration punching device and the sleeve pipe discharging device are in a working state.

In some embodiments, the casing running device comprises an outer power head provided with a first hollow structure, and the outer power head is provided with a first driving sleeve, and the first driving sleeve is used for connecting the casing to drive the casing to rotate.

In some embodiments, the hole guiding device comprises an inner power head and a drill rod, wherein the inner power head is used for driving the drill rod to drill the hole guiding device, and the drill rod is matched with the first hollow structure in a penetrating way, so that the drill rod passes through the outer power head.

In some embodiments, the sleeve pulling device is provided with a second hollow structure, the sleeve pulling device comprises an upper structure and a lower structure, the lower structure is connected with the upper structure through a revolute pair, the lower structure is provided with a driving assembly and a second driving sleeve, the second driving sleeve is used for connecting the sleeve, and the second driving sleeve is driven by the driving assembly and used for rubbing the sleeve.

In some embodiments, the vibroflotation device comprises:

the vibrator with the guide rod is in penetrating fit with the second hollow structure;

The lifting retainer is slidably connected to the first guide rail and comprises a clamping plate and a bolt oil cylinder, wherein the bolt oil cylinder is used for driving the clamping plate to fix the guide rod;

And the supporting retainer is slidably connected to the first guide rail, is connected with the guide rod through a flexible rope and is used for following the guide rod to lift.

In some embodiments, the hole guiding device, the casing running device, the vibroflotation device, and the casing pulling device share the same lifting system, the lifting system comprising:

the main winch is arranged on the machine body assembly and used for controlling the hole guiding device, the sleeve pipe discharging device, the vibroflotation device and the sleeve pipe pulling device to lift;

The goose head structure is arranged on the upright post;

The pulley block is arranged on the hole guiding device, the sleeve pipe discharging device, the vibroflotation device and the sleeve pipe pulling device and is driven by a hoisting steel wire rope which is wound by a gooseneck structure to realize lifting and lowering.

In some embodiments, the vibroflotation device further comprises a first travelling mechanism and a second travelling mechanism, the body assembly realizes the translation of the whole machine in the left-right direction through the first travelling mechanism, and the body assembly realizes the translation of the whole machine in the front-back direction through the second travelling mechanism.

In some embodiments, the vibroflotation device further comprises:

the sleeve length detection sensor is used for monitoring the sleeve insertion or extraction length in real time;

and the control system is in signal connection with the sleeve length detection sensor, the vibration flushing device and the sleeve drawing device and is used for adjusting the drawing speed, the rotation angle and the vibration flushing time according to the detection data.

In some embodiments, the vibroflotation device further comprises an in-bore filler height monitoring radar affixed to the column and oriented toward the orifice;

The control system is further configured to immediately reduce the tube drawing speed of the tube drawing device or pause tube drawing and feeding when the change rate of the top surface of the filler actually measured by the filler height monitoring radar in the hole is larger than a first preset threshold value and the speed of the lifting speed on the tube is larger than a second preset threshold value, so that the pile breaking defect caused by the fact that the filler is not fed in time is prevented.

In the process of using the vibroflotation equipment provided by the embodiment of the application, vibroflotation pore-forming operation is carried out in a sleeve according to the lowered vibroflotation device until the specified depth is reached, the crushed stone is filled, the vibroflotation compaction is carried out, the tube is drawn out, the crushed stone is filled, the vibroflotation compaction is cooperated, the vibroflotation device is lifted, and the working procedure of pile shifting is completed. Compared with the prior art, the vibration punching equipment is integrated to the same machine body through the vibration punching and tube drawing two processes, the sleeve is cooperatively drawn during vibration punching, multiple cross operations are not needed, the operation efficiency of a single pile is remarkably improved, and the pile body has the characteristics of good quality and high construction efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to the provided drawings without inventive effort for those skilled in the art.

Fig. 1 is a front view of a vibroflotation device in an embodiment of the present application.

Fig. 2 is a side view of a vibroflotation device in an embodiment of the application.

Fig. 3 is a schematic view of a part of the hole guiding device in fig. 1.

Fig. 4 is a schematic view of a portion of the casing running device of fig. 1.

Fig. 5 is a schematic view of the device for pulling out the casing in fig. 1.

Fig. 6 is a schematic view of a lifting retainer of the vibroflotation device of fig. 1.

Fig. 7 is a schematic view of the structure of the holding holder of the vibroflotation device in fig. 1.

Fig. 8 is a schematic diagram of a working state of the vibroflotation device in hole guiding and casing running in the embodiment of the application.

Fig. 9 is an enlarged schematic view of a portion a in fig. 8.

Fig. 10 is a schematic view of the vibroflotation device in an operating state of lifting the drill pipe and separating the casing according to the embodiment of the application.

Fig. 11 is an enlarged schematic view of a portion B in fig. 10.

Fig. 12 is a schematic diagram of the vibroflotation device switched from the first position to the second position in the embodiment of the application.

Fig. 13 is a schematic diagram of an operating state of the vibroflotation device in a downward vibration damper according to an embodiment of the present application.

Fig. 14 is an enlarged schematic view of a portion C in fig. 13.

Fig. 15 is a schematic diagram of a working state of the vibroflotation device in an embodiment of the present application, where the vibroflotation device is lowered to a specified depth.

Fig. 16 is an enlarged schematic view of a portion D in fig. 15.

Fig. 17 is a schematic diagram of an operating state of the vibroflotation device in the filling and vibroflotation compaction according to the embodiment of the application.

Fig. 18 is a schematic diagram of an operating state of the vibroflotation device in a sleeve drawing state and at the same time, a packing vibroflotation and a packing vibration density in an embodiment of the present application.

Fig. 19 is an enlarged schematic view of a portion E in fig. 18.

Fig. 20 is a schematic view of a vibroflotation device in which a vibroflotation device lifts off the ground.

Wherein:

1-first guide rail, 2-gooseneck structure, 3-second guide rail, 4-first travelling mechanism, 5-fuselage assembly, 6-second travelling mechanism, 7-main winch, 8-counterweight assembly, 9-control system, 10-mast mechanism, 11-diagonal bracing assembly, 12-inboard power head, 13-drill rod, 14-outboard power head, 15-sleeve, 16-drill bit, 17-vibrator, 18-sleeve pulling device, 19-lifting retainer, 20-guide rod, 21-supporting retainer, 22-pulley block, 23-holding claw, 24-first driving sleeve, 25-revolute pair, 26-driving assembly, 27-second driving sleeve, 28-clamp plate and 29-bolt cylinder.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The present application will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present application.

Referring to fig. 1 and 2, the vibroflotation device provided in the embodiment of the present application includes a body assembly 5, a vibroflotation device and a sleeve pulling device 18 (also referred to as a tube twisting machine).

The fuselage assembly 5 is provided with a column provided with a first guide rail 1.

The vibroflotation device and the sleeve pulling device 18 are arranged on the first guide rail 1 in a lifting manner, the vibroflotation device is matched with the sleeve pulling device 18 in a penetrating manner, and the vibroflotation device and the sleeve pulling device 18 work cooperatively. Wherein, the vibroflotation device is used for vibroflotation ground, and the sleeve pulling device 18 is used for pulling the sleeve 15.

For example, the sleeve pulling device 18 is used for pulling the sleeve 15 by rubbing the sleeve 15.

For another example, the sleeve 15 can be pulled out by adding a vibration exciter, a hydraulic hammer, a pile clamping box (a static press) and the like.

In the process of using the vibroflotation equipment provided by the embodiment of the application, vibroflotation pore-forming operation is carried out in a sleeve according to the lowered vibroflotation device until the specified depth is reached, the crushed stone is filled, the vibroflotation compaction is carried out, the tube is drawn out, the crushed stone is filled, the vibroflotation compaction is cooperated, the vibroflotation device is lifted, and the working procedure of pile shifting is completed.

Compared with the prior art, the vibroflotation equipment is integrated to the same machine body through two processes of vibroflotation and tube drawing, and the sleeve 15 is pulled out in a cooperative mode during vibroflotation without multiple cross operations, so that the operation efficiency of a single pile is obviously improved, and the vibroflotation equipment has the characteristics of good pile body quality and high construction efficiency.

In some embodiments, the upright is also provided with a second guide rail 3. The vibroflotation equipment child comprises a hole guiding device and a sleeve-running device. The hole guiding device and the casing pipe discharging device are both arranged on the second guide rail 3 in a lifting manner, wherein the hole guiding device is used for realizing drilling of a hole guiding, the casing pipe discharging device is matched with the hole guiding device in a penetrating manner, and the casing pipe discharging device is used for discharging the casing pipe 15, for example, the casing pipe 15 can be discharged in a manner of driving the casing pipe 15 to rotate.

Of course, according to actual needs, the hole guiding device, the sleeve discharging device, the vibroflotation device and the sleeve pulling device 18 can be slidably arranged on the first guide rail 1 through the holding claw 23, so as to realize lifting movement.

In this way, the upright post adopts a double-guide-rail design, and the two guide rails form a certain included angle and are respectively assembled with different working devices to cooperatively work. The hole guiding device and the sleeve discharging device are assembled at the right front of the equipment pile frame, and the vibroflotation device and the sleeve discharging device 18 are assembled at the left front of the equipment pile frame from the view of a cab.

For example, the axes of the second guide rail 3 and the first guide rail 1 are coplanar, and the center distance between the two guide rails is larger than the outer diameter of the maximum sleeve 15, so as to avoid the spatial interference between the hole guiding/sleeve feeding 15 process and the vibroflotation/tube drawing process.

The body assembly 5 is configured to move between a first position and a second position, wherein the first position and the second position are two positions in the left-right direction of the vehicle body. When the body assembly 5 is in the first position, the hole guiding device and the sleeve discharging device are in an operating state, the vibration punching device and the sleeve discharging device 18 are in a non-operating state, and when the body assembly 5 is switched to the second position, the vibration punching device and the sleeve discharging device 18 are in an operating state, and the hole guiding device and the sleeve discharging device are in a non-operating state.

In the process of using the vibroflotation equipment provided by the embodiment of the application, construction is carried out according to the working procedures of station positioning, hole guiding, sleeve discharging, station switching, vibroflotation hole deepening, sectional filler vibration compaction, synchronous pulse tube drawing and pile moving. When the machine body assembly 5 is located at the first position, the hole guiding device and the sleeve pipe discharging device are used for guiding holes and discharging sleeve pipes 15 respectively, when the machine body assembly 5 is switched to the second position, the vibration punching device is used for deepening the vibration punching holes, and then the vibration punching device and the sleeve pipe discharging device 18 are used for carrying out the operations of sectional packing vibration sealing and synchronous pulse pipe discharging respectively. Specifically:

The station is in position, namely the machine body assembly 5 is positioned at the first position, the chassis of the equipment walks, and the drill rod of the hole guiding device on the second guide rail 3 is centered on the pile position.

The hole guiding, namely the machine body assembly 5 is positioned at a first position, the drill rod 13 passes through the casing running device, the drill bit 16 of the drill rod 13 is drilled to the designed depth, and sludge is continuously discharged through the spiral blades.

The lower sleeve 15 is positioned at the first position, and the rotary clamping head of the lower sleeve device clamps the sleeve 15 and presses the sleeve 15 while rotating, thereby protecting the wall in the whole process.

Station switching, namely switching the machine body assembly 5 from a first position to a second position, so that the vibroflotation device on the first guide rail 1 centers the pile position.

The vibroflotation hole is deepened, namely the body assembly 5 is positioned at the second position, and the high-frequency vibroflotation device 17 of the vibroflotation device penetrates into and passes through the hard layer/pebble layer to reach the final depth.

The segmented packing is vibrated and the fuselage assembly 5 is in a second position, such as where a break in stone is performed every 1.0m, and is vibrated and sealed by the vibroflotator 17.

Synchronous pulse tube drawing, namely that the machine body assembly 5 is positioned at the second position, and the tube head is rubbed by the tube drawing device 18 to rotate, and the tube head is vibrated and drawn simultaneously in cooperation with vibration and sealing beat.

And (3) completing pile moving, namely completely pulling out the sleeve 15, lifting the vibroflotation device 17 out of the orifice, and walking the chassis of the machine body assembly 5 to the next pile position.

Compared with the prior art, the vibroflotation equipment integrates four working procedures of hole guiding, sleeve pipe discharging, vibroflotation and pipe drawing into the same machine body through double guide rails and double channels, single-pile full circulation can be completed only by one-time station switching, the sleeve pipe 15 can be cooperatively discharged during hole guiding, and the sleeve pipe 15 can be cooperatively drawn during vibroflotation, so that the vibroflotation equipment has the characteristics of good pile body quality and high construction efficiency.

In addition, the vibroflotation equipment also comprises a counterweight assembly 8, a mast mechanism 10 and a diagonal bracing assembly 11. The counterweight assembly 8 is used as an anti-overturning balance weight and is used for providing reverse moment with the same magnitude and opposite direction as the moment of the upright post cantilever to prevent equipment from overturning, the upright mast mechanism 10 is used for realizing mast lifting, verticality closed loop and quick station rotation, and the diagonal bracing assembly 11 is used for absorbing high-frequency excitation counter force and providing lateral stability.

Referring to fig. 4, the casing running device includes an outer power head 14, the outer power head 14 is provided with a first hollow structure, the outer power head 14 is provided with a first driving sleeve 24, and the first driving sleeve 24 is used for connecting with the casing 15 to drive the casing 15 to rotate, so as to realize pipe drawing.

Since the outer power head 14 is located below the inner power head 12 of the hole guiding device, the drill rod 13 of the hole guiding device passes through the first hollow structure of the outer power head 14 and enters the soil layer.

Referring to fig. 3, the hole guiding device includes an inner power head 12 and a drill rod 13, the inner power head 12 is designed in a top driving manner, the drill rod 13 is provided with a drill bit 16 at the bottom, the inner power head 12 is used for driving the drill rod 13 to drill the hole guiding, and the drill rod 13 is matched with the first hollow structure in a penetrating manner so that the drill rod 13 passes through the outer power head 14.

In addition, pulley blocks 22 are arranged at the upper parts of the inner power head 12 and the outer power head 14, and are lifted and lowered by being driven by a hoisting steel wire rope which is reeled down through the gooseneck structure 2. The inner power head 12 and the outer power head 14 are connected with the guide rail on the upright post through holding claws 23 and can slide up and down.

Referring to fig. 5, the sleeve pulling device 18 is provided with a second hollow structure for being matched with the vibroflotation device in a penetrating way. Specifically, the sleeve pulling device 18 includes an upper structure and a lower structure, the lower structure is connected with the upper structure through a revolute pair 25 (which may be a slewing bearing), the lower structure is provided with a driving assembly 26 and a second driving sleeve 27, the second driving sleeve 27 is used for connecting the sleeve 15, and the second driving sleeve 27 is driven by the driving assembly 26 and is used for rubbing the sleeve 15.

Of course, the driving assembly 26 may be an oil cylinder, and the oil cylinder is hinged to the second driving sleeve 27, so that the second driving sleeve 27 drives the sleeve 15 to rotate through telescopic motion of the oil cylinder.

The upper structure of the pipe twisting machine is provided with a pulley block 22 which is driven by a hoisting steel wire rope which is reeled down by the gooseneck structure 2 to be lifted up and down, and is connected with a guide rail on the upright post by a holding claw 23 and can slide up and down.

In some embodiments, the sleeve pulling device 18 is internally integrated with an air injection assembly, the air injection assembly is connected with an external air source, the air injection rhythm of the air injection assembly is configured to be synchronous with the positive and negative rotation periods of the second driving sleeve 27, and the air injection assembly is used for stopping air injection when the second driving sleeve 27 rotates positively and starting air injection when the second driving sleeve 27 rotates reversely.

In the present embodiment, the procedure of driving the second driving sleeve 27 forward is the procedure of driving the sleeve 15, and the procedure of driving the second driving sleeve 27 backward is the procedure of pulling out the sleeve 15 by the driving assembly 26.

On the basis of the above, the gas injection assembly comprises a micropore pressure relief pipe which is annularly arranged on the sleeve 15, the second driving sleeve 27 is set to extrude the hole wall when rotating forwards, the hole wall is unloaded when rotating reversely, gas injection is started instantly through the reverse rotation, for example, transient negative pressure of minus 5 to minus 15kPa is generated when the reverse rotation is unloaded, external gas can be extruded into cracks as long as 0.05 to 0.1MPa is provided, high-pressure microbubbles (0.1 mm level) enter the micro cracks, additional wedge stress is generated by the surface tension of the bubbles, the cracks are further propped up, the effective contact area of the interface is reduced by more than 20% after the cracks are expanded, the interface between the sleeve 15 and the soil layer can be further loosened by utilizing the air pressure pulse, and the pipe pulling resistance is reduced by more than 20%.

That is, by utilizing the coupling window of the twisting pipe reverse instant soil stress unloading, micro-crack opening and negative pressure suction, high-pressure micro-bubbles are injected by the gas injection assembly synchronously, the bubbles are wedged into cracks and cover the steel wall, and simultaneously, the double components of adhesion and friction are reduced, so that the total resistance of the interface is reduced by more than 20%, the efficient drag reduction of 'turning-gas' rhythm matching is realized, and the easy tube drawing is facilitated.

Referring to fig. 6 and 7, the vibroflotation device includes a vibroflotation device 17 with a guide rod 20, a lifting retainer 19 and a supporting retainer 21, wherein, the guide rod 20 and the vibroflotation device 17 are matched with a second hollow structure in a penetrating way, the vibroflotation device 17 can provide high-frequency vibroflotation, the lifting retainer 19 is slidably connected with the first guide rail 1, the lifting retainer 19 includes a clamping plate 28 and a bolt oil cylinder 29, the bolt oil cylinder 29 is used for driving the clamping plate 28 to fix the guide rod 20, the supporting retainer 21 is slidably connected with the first guide rail 1, the supporting retainer 21 is connected with the guide rod 20 through a flexible rope, and the supporting retainer 21 is used for following the lifting of the guide rod 20.

Specifically, the lifting retainer 19 is connected with the guide rail on the upright post through the holding claw 23 and can slide up and down, the lifting retainer 19 is provided with a bolt oil cylinder 29, a clamping plate 28 can be driven to fix the guide rod 20, the lifting retainer 19 is also provided with a pulley block 22, and the lifting retainer is driven to lift and lower by a hoisting steel wire rope which is wound by the gooseneck structure 2, so that the guide rod 20 and the vibroflotation device 17 are driven to lift and lower for operation. Similarly, the holding holder 21 is connected to the guide rail on the column by the holding claw 23 so as to be slidable up and down. The supporting retainer 21 is provided with a hanging point so that the supporting retainer 21 is connected with the top of the guide rod 20 through a flexible rope, and the supporting retainer 21 moves up and down along with the guide rod 20 to achieve the purpose of supporting the guide rod 20.

In some embodiments, the tapping device, the casing running device, the vibroflotation device, and the casing pulling device 18 share the same lifting system, which includes the main winch 7, the gooseneck structure 2, and the pulley block 22.

The main winch 7 is arranged on the machine body assembly 5, the main winch 7 is used for controlling the hole guiding device, the sleeve discharging device, the vibroflotation device and the sleeve pulling device 18 to ascend and descend, the gooseneck structure 2 is arranged on the upright post, the hole guiding device, the sleeve discharging device, the vibroflotation device or the sleeve pulling device 18 are all provided with pulley blocks 22, and each pulley block 22 is driven by a winch steel wire rope which is wound by the gooseneck structure 2 so as to realize lifting and lowering of each device.

In some embodiments, the apparatus further comprises a first travelling mechanism 4 (also called a long ship assembly) and a second travelling mechanism 6 (also called a short ship assembly), the fuselage assembly 5 enables the translation of the whole machine in the left-right direction (such as the translation between the first position and the second position) through the first travelling mechanism 4, and the fuselage assembly 5 enables the translation of the whole machine in the front-back direction through the second travelling mechanism 6.

In some embodiments, the apparatus further comprises a cannula length detection sensor and control system 9.

The control system 9 is in signal connection with the sleeve length detection sensor, the vibration flushing device and the sleeve drawing device 18, and the control system 9 is used for adjusting the pipe drawing speed, the rotating angle and the vibration flushing time according to detection data.

In the traditional method, the number of turns of the winch is multiplied by the rope diameter, and accumulated errors are caused by pulley slipping and steel wire rope elongation, so that pile breakage is very easy to occur. Compared with the prior art, the control system 9 calculates the crushed stone feeding volume corresponding to the pipe pulling amount of unit length in real time, if the crushed stone feeding volume reaches the preset condition, the speed limit or the stop of pulling is immediately carried out, so that the pile breaking probability is reduced, meanwhile, the number of positive and negative rotations of the second driving sleeve 27 is bound with the pipe pulling amount of unit length, for example, the positive and negative rotations are forcibly switched and turned once every 0.5m of the pile pulling, the uniform loosening of a soil interface is ensured, the pipe pulling resistance is obviously reduced, the deformation of the sleeve 15 caused by local hard pulling is avoided, in addition, the vibration compaction current duration of the vibrator 17 is linked with the pipe pulling amount of unit length, so that the design compactness of each linear meter of pile body is ensured, and the dead zone of the vibration lack quality is eliminated.

In this way, a millimeter-level true value is provided for the control system 9 through the sleeve length detection sensor, so that three closed loops of' how much to pull out → how much to throw → how long to vibrate → are formed, the pile breaking rate can be obviously reduced, materials are saved, and the single pile construction efficiency is improved.

In some embodiments, the apparatus further comprises an in-bore filler height monitoring radar secured to the column (e.g., the first rail) and oriented toward the aperture.

The control system 9 is further configured to immediately reduce the tube drawing speed of the tube drawing device 18 or pause tube drawing and feeding when the rate of change (in particular, the drop) of the top surface of the measured filler of the in-hole filler height monitoring radar is greater than a first preset threshold value A (for example, 0.35 m/min) and the rate of acceleration on the tube 15 is greater than a second preset threshold value B (for example, 0.50 m/min), so as to prevent the broken pile defect caused by the fact that the filler is not timely replenished.

It should be noted that the ram 17 is required to lift the sleeve 15 while the rock material is being crushed section by section in the bore. Taking a construction hole with the hole depth of 20-60 m as an example, operators cannot see the real position of the broken stone surface in the hole, and the conventional pipe drawing method is based on experience, so that subjective error is large. Once the pile is pulled out and filled, a negative pressure cavity appears in the hole section, and surrounding soft soil is instantly poured in, so that the diameter is reduced and the pile is broken. Meanwhile, the 'hopper blanking abnormality' is found manually, the pulling is stopped again, 30-60s is delayed, a cavity of 0.3-0.6m is formed, and the post-remediation is ineffective.

If the lifting speed v_c of the sleeve 15 is greater than the falling speed v_f of broken stones, a cavity section appears in the hole, and once the cavity height is greater than 0.3-0.5m, loose or saturated soil body around the cavity section is radially squeezed in to cut off broken stone continuous bodies, so that broken piles or shrinkage defects are formed.

For this purpose, the embodiment is provided with a radar for monitoring the height of the filler in the hole, the radar is fixed at the corresponding position of the first guide rail through a universal bracket, and is aligned with the center of the hole (the sleeve 15 is prevented from being blocked) in a 15-degree downward direction, the radar is used for monitoring the height of the filler in the hole, and the control system 9 performs a judgment every second:

if v_f>A and v_c>B;

triggering a first-stage protection, namely immediately reducing the tube drawing speed to 0.05m/s;

if continuous 3s still meets the above condition;

The secondary protection is triggered by suspending tube drawing and starting the forced feeding-vibration damper 17 to lift 0.3m, opening the feeding gate for 5s, and then descending and re-vibrating until the cavity is eliminated.

In this way, the top surface of the filler is monitored in real time by adopting an orifice non-contact radar, and the pipe drawing is controlled in a closed loop mode by a double-threshold algorithm of 'descending rate + drawing rate', so that the traditional 'post pile breakage found' is changed into 'pre-prevention cavity', the pile breakage rate is reduced from the hundredth level to the thousandth level, materials are saved, reworking is avoided, and a core perception-decision integrated technical support is provided for unmanned construction of ultra-deep vibroflotation piles.

The construction process of the device is specifically described below:

Referring to fig. 8 and 9, the inner power head 12 drives the drill rod 13 to rotate, the outer power head 14 drives the sleeve 15 to rotate, and the inner power head 12 and the outer power head 14 are simultaneously driven by the hoisting wire rope to be lowered to a designated drilling depth.

Referring to fig. 10 and 11, the inner power head 12 drives the drill rod 13 to lift up, and separates the outer power head 14 from the casing 15 after passing over the casing 15.

Referring to fig. 12, the first travelling mechanism 4 translates to switch the body assembly 5 to the second position, and the hole is displaced to the left of the body, so as to prepare for vibroflotation hole forming.

Referring to fig. 13 and 14, the lifting retainer 19 drives the guide rod 20 and the vibroflotation device 17 to be placed in the sleeve 15 for vibroflotation hole forming operation.

Referring to fig. 15 and 16, the lifting retainer 19 is replaced with the guide rod 20 to be locked, and is continuously lowered into the sleeve 20 to perform vibroflotation and hole forming operations to reach a specified depth.

Referring to fig. 17, the lifting retainer 19 drives the guide rod 20 to lift, and synchronously fills the crushed stone.

Referring to fig. 18 and 19, after the guide rod 20 is lifted to a certain height, the sleeve pulling device 18 is connected with the sleeve 15 and synchronously rubs, the lifting retainer 19 replaces the guide rod 20 to clamp the sleeve 15 to continue lifting, and the sleeve pulling device 18 drives the sleeve 15 to synchronously lift and simultaneously fill crushed stone to shake, impact and compact.

Referring to fig. 20, until the vibroflotation device 17 lifts off the ground, the gravel pile is formed, the guide rod 20 is lifted to a certain height, the sleeve pulling device 18 and the sleeve 15 are lowered for a plurality of times, and the sleeve 15 is removed in sections to prepare for the next work cycle.

It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The vibroflotation equipment provided by the application is described in detail above. The principles and embodiments of the present application have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the inventive arrangements and their core ideas. It should be noted that it will be apparent to those skilled in the art that the present application may be modified and practiced without departing from the spirit of the present application.

Claims (10)

1. A vibrating and punching device, which comprises a vibrating and punching machine, characterized by comprising the following steps:

the machine body assembly is provided with an upright post, and the upright post is provided with a first guide rail;

The sleeve pulling device is arranged on the first guide rail in a lifting manner and is used for pulling out the sleeve;

The vibrating and punching device is arranged on the first guide rail in a lifting manner, is matched with the sleeve pulling device in a penetrating manner and is used for vibrating and punching a foundation, and the sleeve pulling device and the vibrating and punching device work cooperatively.

2. The vibroflotation apparatus of claim 1 wherein the upright is further provided with a second rail, the vibroflotation apparatus further comprising:

the sleeve lowering device is arranged on the second guide rail in a lifting manner and used for lowering the sleeve;

the hole guiding device is arranged on the second guide rail in a lifting manner, is matched with the casing running device in a penetrating manner and is used for drilling a hole, and the hole guiding device and the casing running device work cooperatively;

when the machine body assembly is positioned at the first position, the hole guiding device and the sleeve discharging device are in a working state, and when the machine body assembly is switched to the second position, the vibroflotation device and the sleeve discharging device are in a working state.

3. The vibroflotation device of claim 2, wherein the sleeve-running apparatus comprises an outer power head provided with a first hollow structure, the outer power head being provided with a first drive sleeve for connecting the sleeve for driving the sleeve to rotate.

4. A vibroflotation device as claimed in claim 3, wherein the pilot device comprises an inner power head and a drill rod, the inner power head being arranged to drive the drill rod to drill into the pilot hole, the drill rod being arranged in threaded engagement with the first hollow structure such that the drill rod passes through the outer power head.

5. The vibroflotation device of claim 1, wherein the sleeve pulling device is provided with a second hollow structure, the sleeve pulling device comprises an upper structure and a lower structure, the lower structure is connected with the upper structure through a revolute pair, the lower structure is provided with a driving assembly and a second driving sleeve, the second driving sleeve is used for connecting a sleeve, and the second driving sleeve is driven by the driving assembly and used for rubbing the sleeve.

6. The vibroflotation apparatus of claim 5 wherein the vibroflotation device comprises:

the vibrator with the guide rod is in penetrating fit with the second hollow structure;

The lifting retainer is slidably connected to the first guide rail and comprises a clamping plate and a bolt oil cylinder, wherein the bolt oil cylinder is used for driving the clamping plate to fix the guide rod;

And the supporting retainer is slidably connected with the first guide rail, is connected with the guide rod through a flexible rope and is used for lifting along with the guide rod.

7. The vibroflotation apparatus of claim 2 wherein the tapping device, the casing running device, the vibroflotation device and the casing pulling device share the same lifting system, the lifting system comprising:

The main winch is arranged on the machine body assembly and used for controlling the hole guiding device, the sleeve discharging device, the vibroflotation device and the sleeve pulling device to lift;

the goose head structure is arranged on the upright post;

The pulley block is arranged on the hole guiding device, the sleeve discharging device, the vibroflotation device and the sleeve pulling device and is driven by a hoisting steel wire rope which is wound by the gooseneck structure to realize lifting and releasing.

8. The vibroflotation device of claim 1, further comprising a first traveling mechanism and a second traveling mechanism, wherein the body assembly translates in a left-right direction of the machine through the first traveling mechanism, and wherein the body assembly translates in a front-back direction of the machine through the second traveling mechanism.

9. The vibroflotation device of any one of claims 1-8, further comprising:

the sleeve length detection sensor is used for monitoring the sleeve insertion or extraction length in real time;

and the control system is in signal connection with the sleeve length detection sensor, the vibroflotation device and the sleeve drawing device and is used for adjusting the drawing speed, the rotation angle and the vibroflotation time according to detection data.

10. The vibroflotation device of claim 9 further comprising an in-bore filler height monitoring radar affixed to the post and oriented toward the orifice;

the control system is further configured to immediately reduce the tube drawing speed of the tube drawing device or pause tube drawing and feeding when the change rate of the top surface of the filler actually measured by the filler height monitoring radar in the hole is larger than a first preset threshold value and the speed of lifting the sleeve is larger than a second preset threshold value, so that the pile breaking defect caused by untimely feeding of the filler is prevented.