9results about How to "Improve pore forming efficiency" patented technology

The utility model relates to a special spiral square hole drill bit for excavator, which comprises a drill bit main body and a feeding device, the drill bit main body comprises a square hole frame body, a double-end single-screw straight-screw spiral bucket and a built-in driving buffer system, the square hole frame body is arranged on the inner side of the drill bit main body, the built-in driving buffer system is arranged inside the square hole frame body, and the feeding device is arranged on the drill bit main body. The double-head single-screw straight-screw spiral hopper is fixedly connected to the end of the built-in driving buffering system, the feeding device is arranged on the right side of the drill bit body, the built-in driving buffering system comprises a buffering device and a built-in drilling bucket driver, the buffering device is arranged in the square hole frame body, and the built-in drilling bucket driver is arranged in the square hole frame body. The built-in drill bit driver is arranged in the drill bit body and is close to one side of the buffer device, and a limiting mechanism is arranged on the outer side of the guide rod. By applying repeated impact load to the frame body, the hole forming efficiency is improved, under the alternating frequency load, the hole forming quality is higher, meanwhile, construction can be conducted in a harder stratum, and the service life is longer than that of an ordinary square hole drill bit.

The utility model discloses a step drill used for drilling composite material parts, the step drill comprises a drilling cutting part, a countersinking cutting part and a drillstock, the drillstock is provided with a first rotary joint and a second rotary joint, the first rotary joint is provided with a first air inlet and a first air outlet, the second rotary joint is provided with a second air inlet and a second air outlet, and the first air inlet and the second air outlet are communicated with each other. A first through hole is formed in the counter sinking cutting part and the drill handle, a first inlet of the first through hole is communicated with a first air outlet of the first rotating joint, a first outlet of the first through hole is communicated with the drilling spiral chip groove, and a first air inlet of the first rotating joint is connected with an air compressor; the drill handle is provided with a second through hole, a second inlet of the second through hole is communicated with the countersinking spiral chip groove, a second outlet of the second through hole is communicated with a second air outlet of the second rotating connector, and a second air inlet of the second rotating connector is connected with the negative pressure dust collector. According to the utility model, powder cuttings are prevented from being accumulated in a drilling orifice area, and the powder cuttings are prevented from drifting to the air.

The present application relates to pile foundation engineering technical field, especially to a kind of rectangular pile intelligent hole-forming equipment, comprising: main rack, the main rack includes: the cross section control support of rectangular frame structure and swing shaft across the both sides of cross section control support;The horizontal cross-sectional dimension of the cross section control support is matched with target pile hole size;Cutting drilling assembly, the cutting drilling assembly includes: power support and multiple groups of horizontal arrangement cutting drill bit group;The through hole is equipped on the power support, and the power support is set on the swing shaft by the through hole;Swing drive mechanism, the swing drive mechanism includes: swing cylinder and limit switch symmetrically arranged on the swing shaft, and the swing cylinder is used to drive the power support;The limit switch is used to control swing amplitude;Intelligent control system, the intelligent control system includes: torque sensing piece for sensing the torque of cutting drill bit group and controller.

This invention discloses a construction control method for large-diameter bored piles in hillside soil-rock mixture strata, including the construction of a data monitoring module, the deployment of an initial parameter module, the deployment of a real-time control module, preliminary control of the construction process, dynamic prediction of the construction process, dynamic control of the construction process, and continuous model optimization. The method involves real-time acquisition of drilling parameters, mud properties, vibration signals, and slurry return parameters; deployment of an initial parameter module to generate initial construction parameters based on geological feature vectors; deployment of a real-time control module employing a two-stage hybrid intelligent model architecture to sequentially perform real-time condition diagnosis and intelligent parameter control; implementation of a construction process encompassing preliminary control, dynamic prediction, and dynamic control; and finally, system self-learning through continuous model optimization. This method transforms the construction process from static experience-based dependence to dynamic intelligent control, effectively preventing problems such as borehole collapse and deviation, and significantly improving borehole quality, construction efficiency, and safety.

The present application relates to a kind of bearing platform suitable for flat ceiling rock mass vertical drilling, the bearing platform includes the groove base being placed on fixed base, the groove being placed on groove base and the lifting platform and chuck for fixing drill rig being placed on groove.The fixed base is provided with two groups of connecting pipes, and the connecting pipe is connected with the support structure being placed in the lower part of rock mass by fastener;The top of groove is provided with end cover, and the bottom is provided with guide plate and positioning plate connected together;Lifting platform includes lifting body and rocker lever being sleeved on groove;The side of lifting body is provided with magnetic metal sheet, and the corresponding side is provided with chuck;The side of lifting body perpendicular to magnetic metal sheet is provided with connecting piece with through hole, and rocker lever is arranged in through hole;The side of groove adjacent to chuck is provided with sawtooth.The present application also discloses the use method of the bearing platform.The present application is easy to install, simple to operate, and can be used for different height, different angle anchor hole forming operation in site protection.

The invention discloses a steel pipe pile combined cofferdam structure for a cross-sea tunnel and a construction method, and belongs to the technical field of steel pipe pile cofferdams, the steel pipe pile combined cofferdam structure comprises a plurality of steel pipe piles in a head-to-tail closed shape, every two adjacent steel pipe piles are connected through a lock catch assembly, ton bags are stacked in an area defined by the steel pipe piles, and the ton bags are connected with the steel pipe piles. The ton bags are filled with sand materials, and the ton bags are used for carrying out back pressure supporting on the inner sides of the steel pipe piles. The construction method has the effects that the construction cost of the cross-sea tunnel cofferdam is reduced, and the construction efficiency is improved.

This invention relates to the field of pile foundation construction technology and discloses a construction method for improving the bearing capacity and durability of mixed-pile foundations in hard strata. The method includes driving a first set of drill rods to drive a soil-breaking drill bit into the strata while simultaneously injecting fluid for cooling. After reaching the target elevation, the drill is lifted upwards, and cement grout, curing agent grout, or water is injected into the hole during the lifting stage. A second set of drill rods is then used to drive a multi-directional mixing drill bit downwards while simultaneously injecting grout, performing multi-dimensional cross-shearing and mixing of the in-situ fractured rock and soil with the grout. The multi-directional mixing drill bit is controlled to rotate in the opposite direction and lifted out of the hole; grouting can be performed or stopped during the lifting stage. Before the mixed medium in the hole initially sets, the precast pile is implanted to the target elevation. This invention employs an in-situ soil-breaking process without slag removal combined with an alternating blade reverse mixing technology using inner and outer pipes. This overcomes the excessive cutting resistance in hard strata and the phenomenon of mud clumps trapping at the bottom of the hole, achieving uniform forced mixing of the medium in the hole, reducing the pile penetration resistance, and improving the overall bearing capacity of the composite pile.

The utility model discloses a boulder treatment drill cylinder additionally provided with an elastic rod mechanism, which has the following beneficial effects that the elastic rod blocking mechanism is additionally arranged on the drill cylinder, the elastic rod blocking mechanism is arranged at the position close to a cylinder opening at the lower end of the drill cylinder, and the elastic rod blocking mechanism is provided with an inlet for boulders to pass through. When the drill cylinder encounters a boulder, the drill cylinder applies pressure to the boulder, the boulder enters the cylinder cavity of the drill cylinder from the inlet of the elastic rod blocking mechanism at the cylinder opening of the drill cylinder, in the drill lifting process, the elastic rod blocking mechanism blocks the boulder and prevents the boulder from falling off, and therefore the boulder is lifted out of a drill hole together. The drilling boulder can be effectively processed, and the hole forming efficiency is improved.

The invention relates to an alumina-based corundum mullite hollow sphere with a gradient structure and a preparation method of the alumina-based corundum mullite hollow sphere, and belongs to the field of heat-insulating refractory materials. The preparation method comprises the following steps: firstly, carrying out mineral separation and grading homogenization on high-alumina bauxite, then uniformly mixing III-grade high-alumina bauxite, silica, a mixed additive and an organic binding agent according to a certain mass percent, and carrying out granulation; the preparation method comprises the following steps: by taking spherical particles as cores, sequentially wrapping II-grade high-alumina bauxite and I-grade high-alumina bauxite under the rotation of a pelletizer, so as to obtain heterogeneous spherical particle blanks rich in SiO2 inside; and calcining at high temperature to finally obtain the corundum mullite hollow sphere with the gradient structure. The refractory hollow sphere is subjected to gradient structure design through a combined process of grading homogenization, coating forming and high-temperature calcination in-situ pore forming of high-alumina bauxite, phase performance characteristics of corundum and mullite are fully utilized, and the refractory hollow sphere which is low in heat conductivity coefficient, good in erosion resistance, high in use temperature and excellent in thermal shock resistance is developed.