143 results about "Drilled shaft" patented technology

The invention relates to a method for constructing a drilled shaft of a surge chamber in a hydropower station under the condition of weak rock geology; the excavation diameter of the drilled shaft is more than or equal to 20 meters; and the depth of the drilled shaft is more than or equal to 50 meters. The method comprises the following steps: firstly, a safe prestress reinforcing measure is adopted; a prestress anchor rope is arranged in a side slope of the drilled shaft; the deep rock holes in the periphery of the drilled shaft are subjected to consolidation and grouting; the periphery of the drilled shaft is cast with reinforced concrete for locking a mouth, etc; the construction sequence of excavating the drilled shaft comprises that: a raise-boring machine drills a guide hole of phi 216 millimeters from top to bottom; the raise-boring machine enlarges and excavates a small guide well of phi 1, 400 millimeters; a slag slipping guide well of phi 2, 500 millimeters is enlarged and excavated manually from bottom to top; and the slag slipping guide well is enlarged and excavated from top to bottom. The slag slipping guide well is excavated by manual drilling and blasting; slag is naturally slipped and mechanically loaded in the bottom of the well; a large well is enlarged and excavated through drilling and blasting by a manual air drill; and the skimmed slag in a hydraulic backhoe well slips to the bottom of a passage through the slag slipping guide well and is mechanically loaded in the bottom of the well. The construction method has the characteristics of having reasonable construction arrangement, alternately and simultaneously carrying out a plurality of construction types and saving the construction period.

The invention discloses a gyrating drilled shaft provided with an aeration ridge. The invention is characterized in that the gyrating drilled shaft is provided with an aeration ridge on the wall surface at the middle lower part of the drilled shaft section, the aeration ridge is formed by gradually shrinking the drilled shaft connected with the upper flat section of a flood discharging tunnel from the middle part to the middle lower part and then suddenly expanding the wall surface, and at least two aeration holes are distributed on the annular aeration ridge formed by the sudden expansion, each of the aeration holes is spliced with a vent pipe communicating with the atmosphere. The vent pipes can be selectively buried on the outer side of the gyrating drilled shaft. The gyrating drilled shaft disclosed by the invention enables near-wall water layers at the lower reaches of the aeration ridge to become into aerated water flows, thereby increasing the flow cavitation number, playing the effects of air entrainment and cavitation prevention, preventing the overflowing section at the middle lower part of the drilled shaft from being damaged by cavitation erosion, and ensuring the safe flood discharging operation of the gyrating drilled shaft.

Visual inspection of an interior surface of a borehole. A housing adapted to be lowered in the borehole supports a portable camera for generating images of a portion of the interior surface of the borehole and a light source for illuminating an area adjacent the camera. A monitor receives signals from the camera and, in response thereto, displays the images generated by the camera. A viewing envelope positioned adjacent the camera defines a viewing area adjacent the camera, particularly for use in visually inspecting slurry-filled boreholes.

The invention relates to a method that a diversion tunnel is rebuilt into a jet current internal energy dissipation tunnel, which belongs to the technical field of water conservancy and hydropower. The method is characterized in that: a drilled shaft is built at the downstream of the water inlet of the diversion tunnel; the lower part of the drilled shaft is connected with the top of the diversion tunnel, and the top is connected with a throat-type pressure tunnel; the outlet of the pressure tunnel in the drilled shaft is shrunk into a jet exit; a blanking adapter is arranged at the diversion tunnel of fore half section at the joint between the drilled shaft and the diversion tunnel so as to form a blind room. The method comprises the following reconstructed facilities: a short pressure water inlet, a derivation conduit section, a current adjusting section, a constriction section, a drilled shaft section, a drilled shaft tunnel connecting section and a diversion tunnel section. The method has the advantages that: the method is suitable for the reconstruction of high-head and mass flow flood discharge tunnel; a stable and effective flood discharge also can be kept in the situation of high water level at the downstream; the newly-built tunnel section occupies a small area with flexible arrangement; thereby the method can greatly reduce the cost of energy dissipating facilities.

Boring apparatus for drilling laser guided microbore tunnels uses a liquid stream to remove soil as slurry and an airstream to conduct the slurry away from the bore head. The cylindrical head houses a drill shaft steered by a pair of remotely controlled rams according to the position of a laser spot on a target fixed close to the end of the drill shaft. Small arcuate steering movements shift the cutter up and down through a first ram alongside the shaft working through a linkage. Side to side steering is provided by a second ram acting directly on the shaft. The components are mounted on an axial base wall which gives repair access and camera view of the target. A drilling platform has rams for advancing the cylindrical head.

A segmented auger mechanism is mounted in the hopper of a concrete dispensing apparatus used to distribute a hydrated concrete mixture into a horizontally disposed form to manufacture pre-cast concrete structures, such as concrete wall panels used to form a foundation for a residential or commercial building. The auger mechanism is formed of connected segments that can be individually and independently removed from the concrete structure for service and repair. The auger is rotatably supported by a pair of end bearings supported on the opposing end walls of the hopper of the dispensing apparatus, and by at least one interior bearing rotatably supporting a jack shaft having opposing half-round connecting portions for attachment to a corresponding connecting portion on the auger shaft. Removal of a segment of the auger mechanism facilitates the removal of the entire auger mechanism to minimize the down time of the concrete dispensing apparatus.

A sounding device for measuring the thickness of sediments at the base of dry or wet drilled shaft excavations for the assessment of drilled shaft bottom cleaning operations. The sounding device provides a simple and reliable means to quantitatively evaluate drilled shaft bottom cleanliness.

A borescope may include a housing including a transparent viewing window, a bumper surrounding at least a portion of a periphery of the transparent viewing window, wherein the bumper is configured to be pressurized by a fluid, and at least one imaging assembly configured to visualize a field of view exterior of the housing through the transparent viewing window.

The hydraulic elevation apparatus and method of the present invention incorporate a multiple chamber framework internally disposed preferably within at least one single shaft structure, which facilitates movement of object transport containers within the multiple chamber framework. Preferably, fluid elevation is employed to elevate object transport containers and their contents within the multiple chamber framework. Each single shaft structure may be constructed from an existing rehabilitated shaft, or a newly drilled shaft. The present invention may be utilized in vertical or incline lifting environments, and an auxiliary hoist chamber may be incorporated into the multiple chamber framework for use as an alternative to, or in conjunction with, elevating objects by employing fluid elevation. The present invention may be employed in a variety of heavy lifting scenarios, including underground mining or in above ground lifting environments.

A soldier pile wall for shoring an excavation site includes a plurality of drilled shafts drilled along an edge of the excavation site, a plurality of soldier piles, each of the plurality of soldier piles being positioned within a respective drilled shaft, and a pre-stressing system coupled to at least some of the plurality of soldier piles. The pre-stressing system is configured to induce stresses to counteract working stresses of the soldier pile wall. Related methods are also provided.

The invention relates to a super-large-aperture pile foundation hole drilling machine. The super-large-aperture pile foundation hole drilling machine comprises a track rack, a rotary bracket, a drilling machine and a blower, wherein a drilling disc is arranged at the lower part of the drilling machine, drilling heads are distributed on the drilling disc, a drilling shaft is upward arranged at the middle part of the drilling disc, an input gear is sleeved on the drilling shaft, a speed regulating motor is fixed on the rotary bracket, a rotor shaft of the speed regulating motor is connected with a driving gear, the driving gear, the input gear and a bridging gear are sequentially meshed with one another so as to be in transmission, the bridging gear is coaxially connected with a traveling gear, the traveling gear is meshed with the track rack, a suction head is arranged at the lower part of the blower, the lower part of the suction head is connected with slide wanes, a wind power chamber and a wind power transmission pipe are upward arranged at the upper part of the suction head, and a wind wheel is arranged in the wind power chamber. According to the super-large-aperture pile foundation hole drilling machine, super-large apertures can be formed in one step through drilling, and driven-in pile foundations are firm and are difficultly damaged; and the hole drilling efficiency is high, and the cost is low, so that the super-large-aperture pile foundation hole drilling machine is applicable to large-scale popularization and use.

Then invention relates to a kind of arraying method for print circuit board drill or auger spindle of molding machine. It arrays auger spindles in matrix, which is to array auger spindles in several rows and in several lines which both are moveable. The invention improve the drilling efficiency, save the cost and time for drilling, solve the production choke point and cut down the cost of the drilling machine or the molding machine.

The invention relates to an application which adopts polyurea as a waterproof material in concealed excavation tunnel of a vertical shaft. The application comprises the following steps: the polyurea is coated on a geotextile surface so as to obtain a seamless and integral polyurea geotextile compound which is used as a waterproof film and attached on the inner wall of the tunnel by a mechanical fixing mode so as to lead the permeated water to enter into a drainage system at the periphery of the tunnel. Compared with the prior art, the invention has the following advantages: (1) a structure which adopts polypropylene material to make woven fabric as base cloth and is coated with a polyurea layer is adopted and the whole protecting film is seamless and integral and has the characteristics of good permeability resistance, corrosion resistance, wear resistance and aging resistance and the like; (2) the waterproof film is attached on the inner wall of the tunnel in the mechanical fixing mode so as to lead the permeated water to enter into the drainage system at the periphery of the tunnel, thus avoiding leakage; and (3) the construction is simple, convenient and easy to implement.

An apparatus for cleaning deposits from the interior surfaces of a kiln. The apparatus utilizes a directed high-pressure fluid jet to remove deposits adhering to elements within a kiln. The pressurized fluid is delivered to the fluid jet through the shaft of a rotary drill. The drill shaft is received in a sleeve permitting rotational and longitudinal displacement of the shaft. The sleeve also defines a plenum surrounding the drill shaft to communicate pressurized fluid to the fluid jet throughout longitudinal and rotational displacement of the drill shaft. The drill further utilized a boring bit suitable for penetrating encrusted deposits to provide the fluid jet access to the interior surfaces of the kiln. For removing severe encrustations, the drill bit may be used to partially penetrate the encrustation and a linear actuator may then be employed to press large portions of the encrustation from the kiln's refractory lining.

The invention relates to a super-large-aperture pile foundation hole drilling machine. The super-large-aperture pile foundation hole drilling machine comprises a track rack, a rotary bracket, a drilling machine and a blower, wherein a drilling disc is arranged at the lower part of the drilling machine, drilling heads are distributed on the drilling disc, a drilling shaft is upward arranged at the middle part of the drilling disc, an input gear is sleeved on the drilling shaft, a speed regulating motor is fixed on the rotary bracket, a rotor shaft of the speed regulating motor is connected with a driving gear, the driving gear, the input gear and a bridging gear are sequentially meshed with one another so as to be in transmission, the bridging gear is coaxially connected with a traveling gear, the traveling gear is meshed with the track rack, a suction head is arranged at the lower part of the blower, the lower part of the suction head is connected with slide wanes, a wind power chamber and a wind power transmission pipe are upward arranged at the upper part of the suction head, and a wind wheel is arranged in the wind power chamber. According to the super-large-aperture pile foundation hole drilling machine, super-large apertures can be formed in one step through drilling, and driven-in pile foundations are firm and are difficultly damaged; and the hole drilling efficiency is high, and the cost is low, so that the super-large-aperture pile foundation hole drilling machine is applicable to large-scale popularization and use.

The hydraulic transportation apparatus and method of the present invention incorporate a multiple chamber framework internally disposed preferably within at least one single shaft structure, which facilitates movement of object transport containers within the multiple chamber framework. Preferably, fluid elevation is employed to elevate and lower object transport containers and their contents within the multiple chamber framework. Each single shaft structure may be constructed from an existing rehabilitated shaft, or a newly drilled shaft. The present invention may be utilized in vertical or incline lifting environments, and an auxiliary hoist chamber may be incorporated into the multiple chamber framework for use as an alternative to, or in conjunction with, elevating objects by employing fluid elevation. The present invention may be employed in a variety of heavy lifting scenarios, including underground mining or in above ground lifting environments.

The invention discloses a vertical multi-spindle drilling machine with an adjustable spacing. The vertical multi-spindle drilling machine comprises a main motor, an elastic coupling, belt driving components, a main shaft, gear spacing adjusting devices, linear modules, a rack, a supporting rib plate and workpiece clamping and adjusting devices, wherein the main motor is connected with the belt driving components by the elastic coupling; the belt driving components are connected with the corresponding gear spacing adjusting devices by the main shaft; the gear spacing adjusting devices are fixed on the corresponding linear modules; the linear modules are fixed on the rack; the rack is fixed on the workpiece clamping and adjusting devices; and the supporting rib plate is used for supporting and fixing the rack. According to the vertical multi-spindle drilling machine with the adjustable spacing, provided by the invention, the spacing between drill spindles is flexibly adjusted according to the required hole distance, the working efficiency of the drilling machine is improved, and the service life of the drilling machine is prolonged; and the vertical multi-spindle drilling machine with the adjustable spacing has the advantages of simple structure, convenience and flexibility in operation and wide application range.

The invention discloses a full-automatic assembling process for a crane drill bit drill spindle. The full-automatic assembling process comprises the following steps of S1, feeding and conveying a shaft sleeve; S2, clamping, rotating and moving the shaft sleeve; S3, jacking, feeding and conveying a rotating shaft; S4, clamping, rotating and moving the rotating shaft, and combining the rotating shaft and the shaft sleeve into an assembly I; S5, compressing and positioning the assembly I; S6, feeding and grinding a drill bit; S7, assembling the drill bit and the assembly I into an assembly II; S8, splicing a screwdriver head and the assembly II into an assembly III; S9, feeding and conveying a shaft cap; S10, assembling the shaft cap and the assembly III into an assembly IV; and S11, laminating the shaft cap of a finished drill bit drill spindle. Through adoption of the full-automatic assembling process, all accessories of the drill bit drill spindle are assembled into a finished productaccording to a set sequence; automatic assembling operation of the drill bit drill spindle is achieved; the assembling quality and efficiency of the drill bit drill spindle are improved; and good market application value is achieved.

There is provided an extrusion auger having auger segments that are removable from an auger shaft and that include a recess to facilitate removal of the auger segments. A pulling tool is also provided to engage the recess of the auger segment and to facilitate the removal of auger segment from the auger shaft in an axially forward direction. The auger segment includes an access way to provide access to the recess and the recess includes an engaging surface. The pulling tool includes a flanged end that can pass through the access way of the auger segment and contact the engaging surface of the auger segment. The recess of the auger segment may be located in a bore of the auger hub such that the pulling tool can be advanced along a keyway in the auger shaft, rotated to pass the flanged end of the pulling tool through the access way, and pulled axially forward to contact the engaging surface.