48results about How to "Improve ground breaking ability" patented technology

The invention relates to a rotary drilling machine with a vibrator, comprising a rotary drilling device and a lifting device used for lifting the rotary drilling device. The rotary drilling device comprises a drill bit and a drill bit rotation driving mechanism, wherein the drill bit and the drill bit rotation driving mechanism are arranged in order from bottom to top; the vibrator is disposed between the drill bit rotation driving mechanism and the drill bite. According to the scheme, the rotary drilling machine with the vibrator has improved ground-breaking ability of the drill bit.

The invention discloses a drip irrigation belt shallow-buried device with an automatic locking function. The drip irrigation belt shallow-buried device with the automatic locking function comprises adrip irrigation belt conveying mechanism, and a hydraulic braking mechanism. A drip irrigation belt rolling plate in the drip irrigation belt conveying mechanism is rotatably installed on a support base and winded by a drip irrigation belt. The drip irrigation belt rolling plate is provided with the hydraulic braking mechanism. Along a conveying route of the drip irrigation belt, a wheel frame below the support base is successively provided with a guide sleeve corresponding to the drip irrigation belt rolling plate, a fixed pulley corresponding to the guide sleeve and a moveable pulley which is positioned above the inner side of the fixed pulley and can be upwards and downwards moved, and a drip irrigation belt press wheel which is positioned below the moveable pulley and installed at therear side of a furrow opener. The drip irrigation belt shallow-buried device is capable of stopping the rotated conveying of the drip irrigation belt rolling plate in time in an emergency shutdown process, and effectively preventing the winding and congestion of the drip irrigation belt; realizing single independent profiling depth limit, flexibly adjusting the burying depth and the laying width of the drip irrigation belt, and guaranteeing the consistent laying depth of the drip irrigation belt; and simultaneously laying the multiple drip irrigation belts, high in working efficiency, and goodin laying effect.

The invention discloses a soil core sample sampling device for engineering geological investigation, relates to the technical field of soil sampling devices, and solves the problems that an existing direct insertion type sampling device is poor in soil breaking performance and a rotary drilling type sampling device cannot sample a plurality of samples at the same time. The soil core sample sampling device for engineering geological investigation comprises device drilling rods, and the drilling rods are inserted into transmission cylinders. According to the device, the transmission cylinders drive the drilling rods to rotate; the drilling rods can rotationally drill into soil for sampling; the ground breaking performance is high, the problem that a traditional direct insertion type samplingdevice is poor in ground breaking performance is solved; and the device can synchronously drive four transmission cylinders to rotate at the same time through a driving motor, so that the device canobtain four samples at a time, the problems that a traditional rotary drilling-in type sampling device can only obtain one sample at a time, and the workload is large are solved, and the adaptabilityand practicability of the device are improved.

The invention provides diameter expanding equipment for a cast-in-place concrete pile, which comprises an outer sleeve component, an inner sleeve component, an outer sleeve component, an inner sleeve component and an outer sleeve component, the soil breaking structure is arranged on the lower end face of the outer sleeve component, a gap allowing concrete to pass through in the axial direction of the outer sleeve component is formed between the soil breaking structure and the outer sleeve component, and the soil breaking structure is of a structure with the wide upper portion and the narrow lower portion. The invention further provides a construction method of the cast-in-place concrete pile adopting the expanding equipment.

The invention provides a pipe pile-anchor rod composite foundation capable of bearing pulling and pressing bidirectional loads and a construction technology of the pipe pile-anchor rod composite foundation. The pipe pile-anchor rod composite foundation comprises a pipe pile and an anchor rod. An anchoring hole is reserved in a foundation bottom plate of a building structure, and a stretching end anchorage device is pre-buried in the anchoring hole. The anchor rod is composed of an anchor cable and a prefabricated anchor head, and the prefabricated anchor head is buried in soil below the foundation bottom plate. The upper end of the anchor cable penetrates out of the pipe pile to stretch into the anchoring hole, and is locked by the stretching end anchorage device after being stretched. The pipe pile is supported between the foundation bottom plate and the prefabricated anchor head, and the lower end of the pipe pile is fixedly connected with the upper end of the prefabricated anchor head. In the pipe pile-anchor rod composite foundation, the prefabricated anchor head is additionally arranged at the lower end of the pipe pile so that the pressure resisting bearing capacity of the pipe pile can be improved; a waterproof curtain is formed by the pipe pile with the two closed ends, the erosion effect of underground water and the like on concrete and steel can be resisted, and the impermeability and durability of the anchor rod, the pipe pile and foundation bottom plate joints can be improved; and structural reliability and stress performance are ensured, meanwhile, project quality can be effectively improved, the construction period can be shortened, and the investment can be saved.

The invention relates to a flushing double-sided plough tooth for a dredging rake head and belongs to the technical field of dredging engineering. The flushing double-sided plough tooth for the dredging rake head is characterized by being composed of a toothholder and a tooth body; the toothholder is mounted in a position of a wear-resistant block of the rake head and the tooth body is mounted onthe toothholder; tooth wings are arranged on two sides of the lower end of the tooth body, and the tooth wings are of backwards extended structures; and a flushing channel is formed in the middle of atooth trunk. The flushing double-sided plough tooth for the dredging rake head has the advantages of being simple in structure and convenient to assemble, increasing the disturbing force of compact soil, finishing penetrating into, loosening, breaking and turning soil continuously and effectively, improving the efficiency of excavating the compact soil, reducing the labor intensity of seamen, shortening the construction period, being suitable for excavating the compact soil and the like.

The invention provides diameter expanding equipment for a cast-in-place concrete pile. The diameter expanding equipment comprises an outer sleeve component, an inner sleeve component adapted to be mutually nested with outer sleeve component, and a soil breaking structure, the soil breaking structure is arranged on the lower end face of the outer sleeve component, a gap allowing concrete to pass through in the axial direction of the outer sleeve component is formed between the soil breaking structure and the outer sleeve component, and the soil breaking structure is of a structure with the wide upper portion and the narrow lower portion. The invention further provides a construction method of the cast-in-place concrete pile adopting the expanding equipment.

The invention relates to a wharf lower portion dredging device. The wharf lower portion dredging device comprises diesel oil driven equipment, two slurry pumps, a high-pressure water pump, a hydraulic pump, a conveying mechanism, a hoisting mechanism and a drag head assembly. The diesel oil driven equipment, the slurry pumps, the high-pressure water pump and the hydraulic pump are arranged on a working platform. The two slurry pumps are mounted on the rear side of the conveying mechanism. The front end of the working platform is connected with the conveying mechanism through a movable shaft. The working platform is provided with a front anchor gear, a rear anchor gear, a left anchor gear and a right anchor gear for fastening and fixing. A dredging construction method comprises the steps that firstly, equipment is mounted and debugged; secondly, the dredging device enters the construction area, and front splay anchors / cables and rear splay anchors / cables are fastened; thirdly, the dredging drag head assembly is extended into a preset coordinate point according to the tide level; fourthly, construction is conducted in a segmented and layered mode; and fifthly, after the drag head assembly is fallen, the drag head assembly is translated left and right by fastening or loosening the anchor cables, and the step is repeated to complete operation. According to the scheme, during operation, operators do not participate in operation on the wharf lower portion, and the whole implementation process is easy to operate, safe and reliable.

The invention relates to a powerful ground-breaking reamer for a dredger. The powerful ground-breaking reamer comprises a sealing plate, cutter arms, a reamer hub, a cutter ring, cutter teeth and a tooth holder, and is characterized in that a vertical distance between a lower edge of the cutter ring and the upper edge of the reamer hub is 1051 mm; the linear shape of the cutter arms is tapered, and the taper of the cutter arms is 4:5; the lower ends of the cutter arms extend to the inner side of the cutter ring, and the lower ends of the cutter arms and the inner side of the cutter ring are welded together; the diameter of the cutter ring is 1,860 mm; a ring-protecting and wear-resisting plate is welded on the outer edge of the cutter ring; the inner side structure of the cutter ring is that the upper part is narrower than the lower part; the envelope surface of the outer contour of the tooth top of each cutter tooth is close to the taper; and the powerful ground-breaking reamer comprises seven cutter teeth. Under the conditions that the total torque is not changed and a front end structure of a cutter suction dredger bridge is not changed, the acting force of the cutter teeth to soil mass is improved by means of reduction of reamer height, reduction of cutter ring diameter and change of the linear shape of the cutter arms and the like, so that the ground-breaking capacity of the reamer is improved. The powerful ground-breaking reamer for the dredger has the advantages that the structure is simple, the implementation is convenient, the digging force is improved remarkably, the construction efficiency is high and the like.

The invention provides a trailing suction dredger with a hob head driven by an external rotor motor. It includes: the hob harrow head, which is connected to the hull through the harrow arm, and the hob harrow head includes a harrow head fixed body, a harrow head movable cover, a drum equipped with harrow teeth, an external rotor motor, and a hydraulic device and high-pressure flushing elbow; the rake head fixed body is rotatably connected with the movable cover, and a high-pressure flushing elbow is installed above; the roller with rake teeth is installed under the movable cover, including the roller, tooth seat and rake teeth, and the roller is sealed There is an external rotor motor built into the ground, which drives the drum to rotate around the horizontal axis through the stator and rotor; the entire drum with rake teeth is rotatably connected to the movable cover of the rake head, and can rotate within a certain angle range with the movable cover relative to the fixed body of the rake head. The trailing suction dredger provided by the present invention can effectively control the weight of the rake head, reduce the axial restraint attachment, and increase the effective cutting width, thereby greatly improving the soil-breaking ability of the rake head of the dredger and the operation efficiency of dredging hard soil .