CN217055160U - Suspended type vibration tunneling device for constructing underground diaphragm wall - Google Patents

Abstract

The application discloses a device for constructing an underground diaphragm wall by suspended vibration tunneling, which comprises a traveling device with a hoisting device and a power system and a monitoring device; the hoisting equipment traction end is suspended with a vibration grooving and concrete pouring device, and the vibration grooving and concrete pouring device comprises a vertical vibration tunneling frame, a vibration exciter, a hammer-anvil structure, a locking and opening connecting device, a guiding and deviation correcting device, a slurry circulation and concrete pouring pipeline system, a groove wall protective cylinder and a connecting device thereof; different vibration tunneling modes are implemented through the locking and unlocking of the hammer-anvil structure; the machine is used for constructing the underground diaphragm wall aiming at the specific stratum which is hard to drill, such as a dry weathered crust containing broken stones, a broken stone-gravel layer and the like, and the silt stratum with high fluidity, and has the characteristics of high efficiency, low energy consumption and light weight.

Description

Suspended type vibration tunneling device for constructing underground diaphragm wall

Technical Field

The utility model relates to a device of underground continuous wall is built in suspension type vibration tunnelling to the grooving method of this machinery has been published, belongs to engineering equipment technical field.

Background

According to the knowledge of the inventor, in the engineering fields of water conservancy, traffic, buildings and the like, concrete underground continuous walls with different depths and thicknesses need to be built under various complex geological conditions to serve as anti-seepage structures or double load-bearing structures. In the actual construction process, if narrow and deep grooves are constructed in the stratum containing gravels, boulders and floating stones, the hard rock stratum and the silt stratum with high fluidity to construct various underground continuous walls, the method is still a very troublesome problem to the existing grooving equipment and needs to be solved. The tunneling mechanism of the existing multi-head drill trenching machine is that a plurality of drill bits are rotated and milled under the weight, the excavating speed is high, the mechanization degree is high, but the equipment has a large volume, and no impact and vibration mechanism exists, so that the existing multi-head drill trenching machine is mainly suitable for tunneling soil layers, is not suitable for stratums such as cobble stones and boulders, and even cannot be used for tunneling bedrocks.

The invention discloses a suspension type rotation-impact combined tunneling type engineering grooving machine (patent No. ZL 201820980721.7), and relates to a suspension type rotation-impact combined tunneling type engineering grooving machine, which is applied by an inventor in 2018, 2, month and 9 days, and comprises a traveling device and a monitoring device, wherein the traveling device is provided with a hoisting device and a power system; the driving device comprises a vertical guide frame, a deviation correcting device, drill bits arranged in groups and a vertical high-frequency impact device arranged correspondingly; the drill bit transmission shafts in each group are connected through a power transfer case horizontally arranged on the guide frame and are driven to rotate by the same power driving device; the high-frequency impact device is pushed by the buffer device or the plunger oil cylinder to press against the top of a single drill bit transmission shaft or against the top surface of a connection beam connected with a group of drill bit transmission shafts. The connecting beam of the drill bit transmission shafts and the box-shaped bottom beam of the guide frame are movably connected through a set of suspension sliding devices.

The utility model discloses a can be to different stratums, including the fluting operation of stratums such as soil layer, stratum, respond well. The tunneling grooving mechanism combining multi-drill high-frequency impact and rotary milling is realized, and rock strata on the periphery of the groove wall are complete and low in damage.

In further practical research, the inventor finds that the grooving machine combines the mechanism and the function of impact crushing and rotary cutting tunneling, but lacks the mechanism of vibration tunneling, and in engineering practice, the mode of discharging rock debris after impact-rotary milling crushing is not an ideal mode for hard-to-drill stratums such as a dry weathered crust containing broken stones (containing physical connection water), a broken stone-gravel layer and the like, and the power consumption for crushing the rock is high. And the underground continuous wall is built in the foundation deep covering layer, and the stratum is also common and is commonly encountered in the foundation engineering of reservoir dam construction, danger removal and reinforcement, subway traffic and the like. Meanwhile, in the conventional engineering grooving machine, concrete underground continuous walls are poured in grooves in strata with high fluidity such as silt, and quality problems are also caused by collapse of groove walls and mud clamping of shrinkage cavities.

Aiming at the situations, the technology of the application creates a trenching machine combining three tunneling mechanisms of vibration, rotation and impact, and a groove wall protection device such as a retention pile casing and the like, and overcomes the existing technical problems.

SUMMERY OF THE UTILITY MODEL

The application purpose is as follows: to the problems and the defects existing in the prior art, the device for constructing the underground continuous wall by suspension type vibration tunneling is further improved and innovated on the basis of the prior patent application technology, and the device for constructing the underground continuous wall by aiming at the specific stratum which contains broken stones and is difficult to drill, such as a dry weathered shell, a broken stone-gravel layer and the like and a silt stratum with high fluidity has the characteristics of high efficiency, low energy consumption and light weight. Meanwhile, the machine is connected with the existing multi-drill bit rotation-impact grooving patent technology of the applicant, and under the premise of unifying the main machine and adapting the power source, the advantages and the characteristics are respectively exerted by replacing frames of different tunneling mechanisms, so that the machine can cope with different complex geological environments, and the tunneling efficiency is optimized.

The technical scheme is as follows: a suspended vibration tunneling device for constructing an underground diaphragm wall comprises a traveling device with a hoisting device and a power system and a monitoring device; the hoisting equipment traction end suspension vibration grooving and concrete pouring device is characterized by comprising a vertical vibration tunneling frame, a vibration exciter, a hammer-anvil structure, a locking and opening connecting device, a guiding deviation correcting device, wall protection slurry and a concrete pouring pipeline system;

the vibration exciter is arranged above a beam in the vibration tunneling frame, and the hammer-anvil structure and the locking and unlocking connecting device thereof are arranged between the vibration exciter and the beam of the vibration tunneling frame;

the hammer-anvil structure consists of a protruding hammer at the bottom of the vibration exciter, an anvil block positioned on the top surface of the frame beam and a locking and unlocking connecting device positioned between the protruding hammer and the anvil block;

when the locking and unlocking connecting device is locked, the vibration tunneling frame and the vibration exciter are in a rigid connection state, a gap between the hammer and the anvil is sealed and does not collide with each other, the vibration exciter directly transmits vibration energy to the vibration tunneling frame, compression and tension waves are excited on the surface of the vibration tunneling frame to generate corresponding deformation and displacement, the frequency of the vibration exciter is correspondingly adjusted by adjusting the oil pressure and the flow of a power source of the main machine, and the vibration wave effect of the vibration tunneling frame is applied to rock soil on the periphery of the frame and the bottom surface of the frame;

when the locking and unlocking connecting device is opened, impact is generated between the hammer anvils, the excitation frequency of the vibration exciter is adjusted, the vibration exciter and the hammer-anvil structure transmit vibration energy to the vibration tunneling frame in an impact-vibration mode, the vibration tunneling frame transmits impact-vibration wave effect to rock soil on the periphery of the frame and the bottom surface of the frame, relative sliding is generated between the vibration tunneling frame and the rock stratum, the rock stratum enters the rock stratum, and after grooving, concrete is timely poured through the wall protection slurry and the concrete pouring pipeline system.

The utility model discloses the technical scheme who further injects does: the lock-start connecting device of the hammer-anvil structure comprises: the return spring and the pin shaft are arranged between the vibration exciter base plate and the anvil base plate, and the protruding hammer is fixed at the lower center position of the vibration exciter base plate;

the anvil comprises an anvil base plate and is characterized in that a sliding groove is horizontally formed in the anvil base plate, a movable anvil block is arranged in the sliding groove, an anvil column and a plug column are arranged on the movable anvil block, and the height of the anvil column is smaller than that of the plug column:

the vertical space between the anvil column and the projecting hammer is corresponding to the vibration impact amplitude, the movable anvil block is moved under the drive of hydraulic pressure or electric power to lead the anvil column to be aligned with the projecting hammer under the base of the vibration exciter, the projecting hammer and the anvil column impact up and down in a limited amplitude range,

when the plunger moves to the lower part of the protruding hammer, the top of the plunger is abutted against the lower end of the protruding hammer to seal the hammer-anvil gap, and the hammer-anvil structure is locked.

Preferably, the vibration tunneling frame further comprises a rotary power transfer case horizontally arranged in the vibration tunneling frame and drill bits arranged at the bottom of the vibration tunneling frame in a grouping manner; the drill bit transmission shafts in each group are connected through a straight-tooth gear power transfer case and are driven to rotate by the same power driving device; a rotation-impact-vibration tunneling mechanism is formed by regulating and controlling the oil pressure and the flow of a main engine power source and adjusting the excitation frequency of a vibration exciter.

Preferably, the vibration tunneling framework further comprises a groove wall casing and a connection structure of an indwelling movable casing, wherein the groove wall casing and the connection structure of the indwelling movable casing are arranged outside the vibration tunneling framework so as to play a role of protecting the stability of a groove wall in a stratum with large fluidity, and the pouring of the underground continuous wall concrete and the vibration compaction of the underground continuous wall concrete under the complex geological condition of a deep covering layer are completed in time;

the connection structure of the indwelling movable protective sleeve is a clamping device which is distributed on the vibration tunneling frame and connected with a groove arranged on the groove wall protective sleeve;

the clamping device is driven by an operation control system, a rotating fixture block of the vibration tunneling frame is screwed into a groove of the groove wall casing and then fastened, and vibration waves, gravity and drawing force are transmitted to the groove wall casing, so that the groove wall casing and the vibration tunneling frame are vibrated to sink or draw together; when meeting the stratum range with strong fluidity, the clamping device is controlled to rotate away from the groove of the groove wall casing to release, and the groove wall casing is kept at the corresponding position to protect the stability of the groove wall of the specific stratum.

Preferably, the clamping device consists of an upper rotating fixture block, a lower rotating fixture block, a limit stop block and a fixed stop block, wherein the upper rotating fixture block and the lower rotating fixture block are arranged on the vibratory tunneling frame and are driven to rotate by power, and the fixed stop block is arranged in a groove of the groove wall protective sleeve; and the vibration tunneling frame is provided with an electromagnetic or hydraulic driving control system which is used for controlling the upper rotating fixture block and the lower rotating fixture block to rotate relative to the vibration tunneling frame so as to connect the groove wall protective sleeve and the vibration tunneling frame into a whole or separate the groove wall protective sleeve and the vibration tunneling frame.

When the vibration tunneling frame drives the groove wall protection barrel to move downwards, the lower rotary fixture block rotates outwards to clamp the groove wall protection barrel, and the upper rotary fixture block retracts inwards; otherwise, when the vibration tunneling frame drives the groove wall protection barrel to move upwards, the upper rotating fixture block is screwed outwards to clamp the groove wall protection barrel, and the lower rotating fixture block is retracted inwards. Therefore, when tripping is needed, the vibrating tunneling frame and the groove wall protective sleeve can move up and down relatively, so that the external rotating movable clamping block can be conveniently withdrawn in a rotating mode through tripping.

Preferably, the top of the vibration tunneling frame is provided with a vibration absorption device, and the vibration tunneling frame is connected with the suspension end of the traction end of the hoisting equipment through the vibration absorption device.

Preferably, the concrete pouring pipeline system comprises a pumped concrete pouring interface arranged at the upper part of the vibration frame, a pouring interface at the lower part of the vibration frame, and a pipeline connecting the upper interface and the lower interface. And after the tunneling reaches the designed grooving depth, carrying out concrete pouring through the concrete pouring pipeline system.

Preferably, when the concrete is poured by the machine, the frame is repeatedly pulled out and sunk in a vibrating manner while pouring, the concrete is compacted by utilizing the vibration effect of the frame, or the concrete is vibrated and extruded into the trench wall rock soil layer so as to properly enlarge the section of the concrete underground continuous wall as required;

within the range of the groove wall pile casing, pouring concrete from the bottom end of the pile casing, and gradually drawing the groove wall pile casing at the same time until the concrete pouring of the weak flowing stratum is completed, and then lifting the groove wall pile casing out of the ground;

in the grooving process, slurry is conveyed through the slurry circulating pipeline system, and the wall of the grooved groove in the tunneling process is subjected to slurry wall protection;

in the tunneling process, the vibration tunneling frame is controlled by the hoisting equipment to continuously and repeatedly tunnel downwards to a corresponding depth and then is appropriately pulled upwards, and the operation of continuous up-down repeated vibration is carried out to carry out vibration compaction on the grooved groove wall in the tunneling process so as to strengthen the groove wall and prevent the groove wall from collapsing;

preferably, in the grooving construction, a unified main machine and a suspension device are adopted, the framework structure below the suspension device is changed into a vibration tunneling framework or a multi-bit rotation-impact combined tunneling framework according to different stratum structures, and the conversion of different tunneling modes of vibration extrusion tunneling grooving and impact crushing rock grooving is implemented.

The beneficial technical effects are as follows:

1) according to the three vibration tunneling modes of the machine, the vibration waves are used for extruding the peripheral broken stone-pebble rock soil into the grooves, so that the workload of impacting and crushing pebbles and gravels is avoided, the tunneling efficiency can be greatly improved, and the power consumption is reduced. The vibration excavation and the rotation-impact excavation are completely different in mechanism.

In vibration excavation, when the exciter is turned on, a high-frequency pulse applied to the frame is converted into a radial compressive stress and propagates on the frame at the speed of sound in the form of a compression-tension wave, causing a radial microscopic deformation of the vibrating frame and moving downward with the compression wave. Along with the increase of the amplitude of the compression wave, the micromechanical deformation caused by the folding force of the front end of the compression wave is also increased and acts on the rock soil close to the vibration frame and the drill bit, under the repeated action of the high-frequency and large-amplitude compression wave, the particles of the rock are in a more compact state, the pores in the rock disappear and replace free water in the surrounding rock stratum and physically significant associated water, and the vibration frame slides and sinks. The rotation-impact tunneling adopts broken rock as a mechanism, and the mechanism of the broken rock are different, so that the rotation-impact tunneling is suitable for different stratums.

The stratum suitable for vibration excavation comprises loose soil layers, sand layers, pebbles and gravel layers, and underground continuous walls are built in foundation deep covering layers and are commonly encountered in foundation engineering such as reservoir dam building, danger removing and reinforcing, subway traffic and the like. Meanwhile, in the conventional engineering grooving machine, concrete underground continuous walls are poured in grooves in strata with high fluidity such as silt, and quality problems are also caused by collapse of groove walls and mud clamping of shrinkage cavities.

The machine of this application has avoided the broken work load to the ground in special stratum such as corresponding ovum, gravel, and the complete low damage of the peripheral rock stratum of cell wall to in good time accomplish underground continuous wall's pouring. The problem of building a large-depth underground continuous impervious wall under the non-excavation construction condition of a deep covering layer containing a flowing stratum is solved by the remaining pile casing; therefore, the technology of the application also provides effective equipment for difficult construction and difficult sections in the danger-removing reinforcement of the dam, particularly for the construction of a large-depth seepage-proofing underground continuous wall in a specific deep covering layer, and the equipment has the characteristic of relative lightening and is beneficial to overwater operation.

2) When hard rock layers or bedrocks or other strata which are not suitable for vibration excavation are met, the equipment of the technology can also be combined with the prior patent technology of the utility model, namely a suspension type multi-bit rotation-impact combined tunneling type engineering grooving machine (patent number ZL 201820980721.7), a unified host and a hoisting device are adopted, the pressure and the flow of a power source are adjusted, the guide frame which is matched with the vibration grooving section and is provided with an impact-rotation tunneling device is replaced in due time, and the guide frame (the net thickness of the tunneling section size of the guide frame is consistent with the thickness of the vibration grooving section) is used for carrying out impact-rotation rock breaking tunneling.

3) The method is connected with the original multi-drill bit rotary-impact grooving technology previously applied by the applicant, and aims to construct underground continuous walls in various complex geological environments, optimize a tunneling mechanism, improve the tunneling efficiency, eliminate risks and reinforce the foundation of reservoir dams, and create technical and equipment conditions for large-span underground traffic and shipping tunnel engineering for constructing and crossing river water areas under the condition of not damming and cutting off water.

Drawings

FIG. 1 is a schematic diagram of a self-contained structure according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural view of a vibration grooving and concrete pouring apparatus according to example 1 of the present application;

FIG. 3 is a side cross-sectional view of FIG. 2;

FIG. 4 is a schematic view showing a hammer-anvil structure in embodiment 1 of the present application;

FIG. 5 is a schematic view of the lock release linkage of FIG. 4;

FIG. 6 is a sectional view taken along line A-A of FIG. 5;

fig. 7 is a schematic view of the connection of the vibratory excavation frame and the groove wall casing according to embodiment 1 of the present application;

fig. 8 is a side sectional view of the connection state of the vibratory excavation frame and the groove wall casing when the groove wall casing descends according to embodiment 1 of the present application;

fig. 9 is a side sectional view of the connection state of the vibratory excavation frame and the groove wall casing when the groove wall casing ascends according to embodiment 1 of the present application;

fig. 10 is a schematic structural view of a slewing-impact-vibration tunneling device according to embodiment 2 of the present application;

fig. 11 is a schematic structural view of a slewing-percussive tunneling device according to embodiment 3 of the present application;

FIG. 12 is a side sectional view of FIG. 11;

FIG. 13 is a schematic view showing the matching of the cross-sections of the vibration grooving and the rotation grooving in example 3 of the present application.

In the figure: 1. a hoisting device; 2. a traveling device; 3. vibrating the tunneling frame; 4. a deviation correcting device; 5. a vibration exciter; 6. a sharp-bottomed triangular prism; 7. a frame cross member; 8. a frame vertical beam; 9. a bottom beam; 10. a hammer-anvil configuration; 10-1, a hammer; 10-2, an anvil; 10-3, locking and unlocking the connecting device; 10-4 anvil columns; 10-5 plunger plugs; 10-6 chutes; 11. a cell wall protecting cylinder; 12. a trench; 13. an upper movable clamping block; 14. a lower movable fixture block; 15. a limit stop block; 16. fixing a stop block; 17. a drill bit drive shaft; 18. a tapered roller bearing; 19. a straight-tooth gear; 20. a hydraulic motor; 21. installing a locking washer; 22. a sealing cover; 23. a protective cover; 24. a main drill bit; 25. an impact hammer; 26. an auxiliary drill bit; 27. a slurry circulation system; 28. A vibration-damping device; 29. a push-pull mechanism; 30. a return spring.

Detailed Description

The present application will be further elucidated with reference to the following figures and specific embodiments.

Example 1

As shown in fig. 1-9, the present embodiment provides a device for constructing an underground diaphragm wall by suspended vibration tunneling, and the structure of the present embodiment is a machine which can perform conversion operation between impact vibration trenching and pure vibration trenching, and comprises a traveling device 2 with a hoisting device 1 and a power system, and a monitoring device; a vibration grooving and concrete pouring device is hung at the traction end of the hoisting equipment, and comprises a vertical vibration tunneling frame 3, a vibration exciter 5, a hammer-anvil structure 10 and a guide deviation correcting device 4; the vibration exciter 5 is arranged on a frame cross beam 7 in the vibration tunneling frame 3, and the frame cross beam 7 is connected with a bottom beam 9 through a frame vertical beam 8. The deviation correcting device 4 is installed on the vibration tunneling frame 3, the vibration tunneling is used as a mechanism in the embodiment, and the structure and the principle of the deviation correcting device and the background technology are as described above.

In the embodiment, different tunneling mechanisms of impact-vibration tunneling and pure-vibration tunneling are formed by adjusting the connection state between the vibration tunneling frame 3 and the vibration exciter 5, adjusting and controlling the oil pressure and the flow of the main engine power source and adjusting the excitation frequency of the vibration exciter. The concrete structure and the working mechanism are as follows:

the hammer-anvil structure 10 is arranged between the vibration exciter 5 and the vibration excavation frame beam 7; the hammer-anvil structure consists of a projecting hammer 10-1 at the bottom of the vibration exciter, an anvil block 10-2 positioned on the top surface of a frame beam 7 and a locking and unlocking connecting device 10-3 positioned between the projecting hammer and the anvil block;

the lock-open connecting device 10-3 of the hammer-anvil structure includes: the return spring 30 and the pin shaft thereof are arranged between the vibration exciter base plate and the anvil base plate, and the projecting hammer 10-1 is fixed at the lower center position of the vibration exciter base plate; a sliding groove 10-6 is horizontally formed in the anvil base plate, a movable anvil 4 is arranged in the sliding groove, and one end of the movable anvil is controlled by a push-pull mechanism 29 in a linkage manner; an anvil column 10-4 and a plug column 10-5 are arranged on the movable anvil block. The height of the anvil in this embodiment is less than the height of the plug.

When the anvil cylinder moves below the protruding hammer, the vertical distance between the anvil cylinder and the protruding hammer corresponds to the vibration impact amplitude, the movable anvil cylinder is moved under the driving of hydraulic pressure or electric power to enable the anvil cylinder to be aligned with the protruding hammer below the vibration exciter base, and the protruding hammer and the anvil cylinder impact up and down within a limited amplitude range.

When the plunger moves to the lower part of the protruding hammer, the top of the plunger is abutted against the lower end of the protruding hammer to seal the hammer-anvil gap, and the hammer-anvil structure is locked.

Conversion of pure vibration and impact vibration working mechanisms:

when the locking and unlocking connecting device is locked, the vibration tunneling frame and the vibration exciter are in a rigid connection state, a gap between the hammer and the anvil is sealed and does not collide with each other, the vibration exciter directly transmits vibration energy to the vibration tunneling frame, radial compression and tension waves are excited on the surface of the vibration tunneling frame to generate corresponding deformation and displacement, the frequency of the vibration exciter is correspondingly improved by adjusting the oil pressure and the flow of a main engine power source, and the vibration waves of the vibration tunneling frame are applied to peripheral rock and soil.

When the locking and unlocking connecting device is opened, impact is generated between the hammer anvils, the excitation frequency of the vibration exciter is adjusted, the vibration exciter and the hammer-anvil structure are combined to transmit vibration energy to the vibration tunneling frame in an impact-vibration mode, the vibration tunneling frame transmits vibration waves and collision impact force between the hammer anvils to rock and soil on the periphery and the bottom of the frame, and relative sliding is generated between the vibration frame and the rock stratum to enter the rock stratum.

Preferably, the vibration tunneling frame further comprises a retaining wall slurry and concrete delivery pipeline system 27 and a groove wall retaining cylinder 11 to timely complete the concrete pouring and vibration compaction of the underground continuous wall under the complex geological condition of the deep covering layer.

As shown in fig. 2-9: in the stratum range with strong mobility, a connecting structure for keeping the movable groove wall casing 11 is arranged on the vibration tunneling frame 3, grooves 12 are distributed on the groove wall casing 11, a clamping device on the vibration tunneling frame 3 rotates for an angle under the action of an electromagnetic or hydraulic control system, a rotating clamping block of the clamping device is fastened under the action of gravity of the vibration tunneling frame 3, the groove wall casing 11 is positioned in the stratum range which is easy to collapse or flow during vibration sinking, and the clamping device is controlled to keep the groove wall casing 11 in the stratum with corresponding depth. The slurry circulation-concrete pouring pipeline system 27 is provided with a check valve at the outlet of the bottom beam, slurry and concrete can enter the bottom of the pipeline in a one-way mode, and slurry and gravel at the bottom of the pipeline cannot enter the pipeline.

As a further preference of this embodiment, the connection structure comprises an upper movable fixture block 13, a lower movable fixture block 14 and a limit stop 15 which are arranged on the vibrating tunneling frame and rotate under the drive of power, and a fixed stop 16 arranged in the groove 12 of the movable casing, wherein the vibrating tunneling frame is provided with an electromagnetic or hydraulic drive control system for controlling the upper movable fixture block and the lower movable fixture block to rotate relative to the vibrating tunneling frame so as to connect the wall casing and the vibrating tunneling frame into a whole or separate from each other.

When the vibration tunneling frame moves the groove wall protection cylinder downwards, the lower movable fixture block is controlled to rotate outwards to clamp the groove wall protection cylinder, and the upper movable fixture block is retracted inwards. When the vibration tunneling frame moves the groove wall protection barrel upwards, the upper movable fixture block is controlled to rotate outwards to clamp the groove wall protection barrel, and the lower movable fixture block is controlled to retract inwards. Therefore, when tripping is needed, the frame and the protective cylinder can move up and down relatively so as to retract the fastened movable clamping block.

Driving the clamping device through an operation control system, screwing a rotating fixture block of the vibration tunneling frame into a groove of the groove wall casing, fastening, and transmitting vibration waves, gravity and drawing force to the groove wall casing to enable the groove wall casing and the vibration tunneling frame to vibrate together to sink or draw; when meeting the stratum range with strong fluidity, the rotary fixture block is controlled to rotate away from the groove wall casing groove to be tripped, and the groove wall casing is kept at a corresponding position to protect the stability of the groove wall of the specific stratum.

Preferably, the bottom end of the vibration tunneling frame is provided with a pointed triangular prism 6 to reduce the resistance of vibration sinking. The perpendicularity of the slotted hole is kept by adjusting the tension of a suspension steel wire rope of the main machine, controlling the weight of the frame, combining a deviation correcting device to push the plate for adjustment while guiding by gravity. In the grooving process, after each sinking of a distance (such as 0.5 meter) through vibration, upward vibration is conducted for drawing a part of distance (such as 0.3 meter), and the upward vibration is repeated to form the groove continuously downwards, and when the tunneling device is lifted upwards, the upward and downward repeated vibration is also conducted to enable rock soil on the wall of the groove to be compact and stable.

The vibration grooving and concrete pouring device of the technology is different from a continuous steel pipe sinking process in the depth range of the full groove. In the tunneling process, a formed groove wall above a guide frame is not supported by a steel pipe, in the vibration grooving process, in order to ensure that the groove does not collapse, a slurry retaining wall is adopted, appropriate retaining wall slurry is injected into a groove hole, timely supplement is carried out, the slurry quality is maintained through slurry circulation, as the vibration drilling is compact in extrusion, stone slag does not need to be sucked out, reverse circulation slag suction is not needed, a corresponding pipeline is only a slurry channel required by the slurry retaining wall, a slurry residue discharge circulation pipeline does not need to be arranged on a drilling tool, only a pipeline for communicating upper and lower retaining wall slurry is needed, and when the drilling tool is pulled and pulled, the slurry is supplemented immediately below.

Preferably, the vibration absorbing device 28 is arranged on the top of the vibration tunneling frame and is connected with the main machine suspension device through the vibration absorbing device. The vibration is prevented from being transmitted to the hoisting mechanism through the suspension end of the traction end of the hoisting equipment, and the influence of the vibration on the host hoisting device is avoided.

Preferably, in the present embodiment, the vibration frequency of the vibration exciter is adjusted to be in the range of 17-25Hz in the impact-vibration condition, and the vibration frequency of the vibration exciter is adjusted to be in the range of 25-40Hz in the pure-vibration condition. In this example, the design of the mechanically related components, including the vibration design (the relationship between excitation, system and response, and ensuring that the structure evades away from resonance), can be designed and optimized for the vibration frame structure, the vibration exciter and the corresponding formation effect through dynamic simulation and instrument actual measurement.

The impact type vibration tunneling in the embodiment is realized by extruding and sinking the surrounding soil by means of vibration waves, and is different from the concept that a rotary-impact drill bit breaks rock soil, the surface plate of a vibration tunneling frame comprises a bottom surface which is grooved by a vibration extrusion mechanism, while the multi-drill-bit rotary-impact grooving machine in the prior art is a grooving machine which discharges rock debris after crushing eggs and gravel, and the two mechanisms are different, so that the vibration tunneling is low in power consumption and high in tunneling efficiency in applicable strata such as the eggs and gravel.

In the vibration-impact tunneling operation process, the vibration frequency can be changed by adjusting the pressure and the flow of the power source of the main machine and the eccentric torque of the vibration exciter according to geological conditions, and different tunneling states of pure vibration tunneling or impact-vibration tunneling are finished.

Example 2

The basic structure of the machine for constructing the underground continuous wall by vibration-impact-rotary suspended tunneling provided by the embodiment is similar to that of the machine in the embodiment 1, and the difference is that: the machine of the embodiment is a rotary tunneling device provided with a rotary drill bit below a vibration tunneling frame; as shown in fig. 10: the hydraulic vibration exciter 5 is connected with a cross beam 7 of the vibration frame through a hammer-anvil structure 10, and main drill bits 24 which are grouped and driven by a power transfer case driven by a straight-tooth gear 19 are arranged below a bottom beam 9 of the frame; the drill bit transmission shafts 17 in each group are connected through a power transfer case arranged in the vibration tunneling frame 3 and are driven to rotate by the same low-speed plunger hydraulic motor 20. The main drill 24 is arranged below the bottom of the frame pyramid. Tapered roller bearings 18 are arranged between the rotary drill rod and the top and the bottom of the transfer case, and mounting locking washers 21 are respectively arranged on the outer sides of the tapered roller bearings 18. The installation locking washer 21 is arranged for positioning and locking the installation of the tapered roller bearing 18, and the bottom of the tapered roller bearing, the drill rod and the power transfer case is provided with a sealing cover 22 and a protective cover 23 arranged outside the sealing cover so as to prevent muddy water from entering the power transfer case.

The oil pressure and flow of the power source of the main machine are adjusted to ensure that the vibration frequency of the vibration excitation device is within the range of 17-25Hz, so as to realize the drilling mechanism of rotation-impact-vibration and combination thereof.

Preferably, the vibration absorbing device 28 is arranged on the top of the vibration tunneling frame.

The embodiment mainly realizes a rotation-impact-vibration combined tunneling mechanism, is suitable for grooving in dry weathered shells containing gravels, broken stones-gravel layers and other hard-to-drill rocks, and builds underground continuous walls in foundation deep covering layers. These strata are often encountered in reservoir dam construction, danger-removing reinforcement and some large-scale water transportation and shipping tunnels which pass through deep covering layers of river beds. In the actual engineering construction, the tunneling grooving, slurry retaining wall and groove wall casing retaining technology of this embodiment is the same as that of the embodiment, and is not described herein again. In the embodiment, a rotary-impact-vibration grooving structure is adopted, impact-vibration is applied to a rotary drill bit through a drill bit transmission shaft in a rotary power transfer case horizontally arranged in a frame, and the vibration frequency of a vibration exciter is set within the range of 17-25Hz by adjusting the power source parameters of a mechanical main machine.

The embodiment mainly realizes a rotation-impact-vibration combined tunneling mechanism, optimizes the tunneling efficiency in a suitable stratum and builds the underground continuous wall in a foundation deep covering layer. In the actual engineering construction, the tunneling grooving, slurry retaining wall and tank wall casing retaining technology of this embodiment is the same as that of embodiment 2, and will not be described herein again.

Example 3

The vibration grooving and concrete pouring device of the suspended vibration-rotation-impact combined tunneling underground continuous wall construction machine disclosed in the embodiment can be mutually connected with an impact-rotation tunneling device of a suspended multi-drill impact-rotation tunneling device grooving machine previously applied by the applicant, and has advantages respectively as shown in fig. 11 to 12.

The hydraulic impact hammer 25 is arranged in a guide frame of the slotting machine in the original patent, a drill rod of the hydraulic impact hammer impacts a group of rotary-impact drill bits which are horizontally arranged in the guide frame and are driven to rotate by a reduction gear box, the rotary-impact drill bits comprise a main drill bit 24, an auxiliary drill bit 26 is also arranged in a triangular area outside the main drill bit in the projection of the groove section, and drill rods of the main drill bit and the auxiliary drill bit are connected to a power transfer case which is horizontally arranged in the guide frame and are driven to rotate by a hydraulic motor. The diameters of the main drill bit and the auxiliary drill bit are determined according to the determined grooving thickness, so that the vibration tunneling frame can correspond to the grooving size of the impact-rotation tunneling frame.

In actual construction, relevant parameters of a power source of a mechanical main machine are adjusted, the impact frequency of an impact hammer is in a range of 2-12Hz, and when the impact hammer enters bedrock or a stratum which is not suitable for vibration tunneling, the impact-rotation tunneling frame is replaced by an impact-rotation tunneling frame, and the construction is performed in a rotation-impact rock breaking mode.

Fig. 13 is a schematic view of a trenching section, which implements conversion of different tunneling modes of vibration extrusion tunneling trenching and impact crushing rock trenching by adapting the trenching section, adopting a unified host and a suspension device and replacing two frames, and is complementary in function to various complex strata, and different tunneling mechanisms are adopted in the strata adapted to each other to optimize the tunneling efficiency.

The foregoing is only a preferred embodiment of this application and modifications may be made thereto without departing from the principles of the application and these modifications are to be considered as within the scope of the application. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present application.

Claims (7)

1. A suspended vibration tunneling device for constructing an underground diaphragm wall comprises a traveling device with a hoisting device and a power system and a monitoring device; the hoisting equipment traction end suspension vibration grooving and concrete pouring device is characterized by comprising a vertical vibration tunneling frame, a vibration exciter, a hammer-anvil structure, a locking and opening connecting device, a guiding deviation correcting device, wall protection slurry and a concrete pouring pipeline system;

the vibration exciter is arranged above a beam in the vibration tunneling frame, and the hammer-anvil structure and the locking and unlocking connecting device thereof are arranged between the vibration exciter and the beam of the vibration tunneling frame;

the hammer-anvil structure consists of a protruding hammer at the bottom of the vibration exciter, an anvil block positioned on the top surface of the frame beam and a locking and unlocking connecting device positioned between the protruding hammer and the anvil block;

when the locking and unlocking connecting device is locked, the vibration tunneling frame and the vibration exciter are in a rigid connection state, a gap between the hammer and the anvil is sealed and does not collide with each other, the vibration exciter directly transmits vibration energy to the vibration tunneling frame, compression and tension waves are excited on the surface of the vibration tunneling frame to generate corresponding deformation and displacement, the frequency of the vibration exciter is correspondingly adjusted by adjusting the oil pressure and the flow of a power source of the main machine, and the vibration wave effect of the vibration tunneling frame is applied to rock soil on the periphery of the frame and the bottom surface of the frame;

when the locking and unlocking connecting device is opened, impact is generated between the hammer anvils, the excitation frequency of the vibration exciter is adjusted, the vibration exciter and the hammer-anvil structure transmit vibration energy to the vibration tunneling frame in an impact-vibration mode, the vibration tunneling frame transmits impact-vibration wave effect to rock soil on the periphery of the frame and the bottom surface of the frame, relative sliding is generated between the vibration tunneling frame and the rock stratum, the rock stratum enters the rock stratum, and after grooving, concrete is timely poured through the wall protection slurry and the concrete pouring pipeline system.

2. An apparatus for constructing an underground diaphragm wall by hanging vibration excavation according to claim 1, wherein: the lock-start connecting device of the hammer-anvil structure comprises:

the return spring and the pin shaft thereof are arranged between the vibration exciter base plate and the anvil base plate, and the protruding hammer is fixed at the lower center position of the vibration exciter base plate;

the anvil base is characterized in that a sliding groove is horizontally formed in the anvil base, a movable anvil block is arranged in the sliding groove, an anvil column and a plug column are fixedly arranged on the movable anvil block, and the height of the anvil column is smaller than that of the plug column:

the vertical distance between the anvil cylinder and the projecting hammer is corresponding to the vibration impact amplitude, the movable anvil cylinder is moved to align the anvil cylinder with the projecting hammer below the vibration exciter base under the drive of hydraulic pressure or electric power, the projecting hammer and the anvil cylinder impact up and down within a limited amplitude range,

when the plunger moves to the lower part of the protruding hammer, the top of the plunger is abutted against the lower end of the protruding hammer to seal the hammer-anvil gap, and the hammer-anvil structure is locked.

3. An apparatus for constructing an underground diaphragm wall by hanging vibration excavation according to claim 1, wherein: the vibration tunneling frame also comprises a rotary power transfer case horizontally arranged in the vibration tunneling frame and drill bits arranged at the bottom of the vibration tunneling frame in groups; the drill bit transmission shafts in each group are connected through a straight-tooth gear power transfer case and are driven to rotate by the same power driving device; a rotation-impact-vibration tunneling mechanism is formed by regulating and controlling the oil pressure and the flow of a main engine power source and adjusting the excitation frequency of a vibration exciter.

4. A suspended vibration tunneling apparatus for constructing an underground diaphragm wall according to claim 1, wherein: the device also comprises a groove wall protecting cylinder arranged outside the vibration tunneling frame and a connection structure of the remaining movable protecting cylinder so as to play a role of protecting the stability of the groove wall in a stratum with large fluidity and timely finish the pouring and vibration compaction of the underground continuous wall concrete under the complex geological condition of a deep covering layer;

the connection structure of the indwelling movable protective barrel is a clamping device which is used for connecting the vibration tunneling frame with the grooves distributed on the protective barrel of the tank wall;

the clamping device is driven by an operation control system, a rotating fixture block of the vibration tunneling frame is screwed into a groove of the groove wall casing and then fastened, and vibration waves, gravity and drawing force are transmitted to the groove wall casing, so that the groove wall casing and the vibration tunneling frame are vibrated to sink or draw together; when meeting the stratum range with strong fluidity, the clamping device is controlled to rotate away from the groove of the groove wall casing to release, and the groove wall casing is kept at the corresponding position to protect the stability of the stratum groove wall.

5. An apparatus for constructing an underground diaphragm wall by hanging vibration excavation according to claim 4, wherein: the clamping device consists of an upper rotating fixture block, a lower rotating fixture block, a limit stop block and a fixed stop block, wherein the upper rotating fixture block and the lower rotating fixture block are arranged on the vibratory tunneling frame and are driven to rotate by power, and the fixed stop block is arranged in a groove of the groove wall casing; the vibration tunneling frame is provided with an electromagnetic or hydraulic drive control system which is used for controlling the upper rotating fixture block and the lower rotating fixture block to rotate relative to the vibration tunneling frame so as to connect the groove wall protective sleeve and the vibration tunneling frame into a whole or separate the groove wall protective sleeve and the vibration tunneling frame;

when the vibration tunneling frame drives the groove wall protection barrel to move downwards, the lower rotary fixture block rotates outwards to clamp the groove wall protection barrel, and the upper rotary fixture block retracts inwards;

when the vibration tunneling frame drives the groove wall protection barrel to move upwards, the upper rotating fixture block is screwed outwards to clamp the groove wall protection barrel, and the lower rotating fixture block is retracted inwards.

6. The suspended type vibration excavation and construction device for the underground continuous wall according to claim 1, wherein the vibration absorption device is arranged at the top of the vibration excavation frame, and the vibration excavation frame is connected with the suspended end of the traction end of the winding device through the vibration absorption device.

7. A suspended vibration excavation apparatus for constructing an underground diaphragm wall according to claim 1, wherein the concrete injection piping system includes a pumped concrete injection port installed at an upper portion of the vibration excavation frame, a lower pouring port, and piping connecting the upper and lower ports.

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