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80results about How to "Large feed force" patented technology

Full-hydraulic continuous-penetration static sounding machine with double oil cylinder groups

The invention relates to a full-hydraulic continuous-penetration static sounding machine with double oil cylinder groups. Two groups of oil cylinders are adopted and mounted on a frame in a cross shape in a manner of being divided into an upper layer and a lower layer; each group of oil cylinder is fixedly connected together through a cross beam; hydraulic chucks are mounted on the cross beams; stroke limiting switches are mounted below the oil cylinders; a probe rod passes through center inner holes of the two hydraulic chucks; and a hydraulic control system is further provided with valve groups, reversing valves, a hydraulic pump, an electro-hydraulic proportional speed regulating valve KT, a relief valve, a pressure gauge and an oil box. The static sounding machine adopts double oil cylinder group feeding and automatic reversing control; the double hydraulic chucks automatically clamps or loosens the probe rod and automatically achieves continuous uninterrupted feeding through the cooperation of the movement of the oil cylinders; and steady uniform speed feeding is achieved by utilizing the electro-hydraulic proportional speed regulating valve. The static sounding machine has the advantages of simple structure, reliable operation, high efficiency, economy and durability, is convenient for operation, is suitable for the technical field of geotechnical engineering, such as geotechnical engineering, high-speed railway construction, expressway construction and port engineering, and has a wide application prospect.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Horizontal combined machine tool with lifting spindle

The invention provides a horizontal combined machine tool with a lifting spindle, which belongs to the technical field of machinery and solves the problem that a spindle of an existing horizontal drilling and tapping machine tool is incapable of lifting. The horizontal combined machine tool with the lifting spindle comprises a tool body, a working platen and a spindle lifting table, a spindle platen is arranged on the spindle lifting table, a spindle box is arranged on the spindle platen, a connecting support is arranged on the tool body, a screw rod is arranged between the spindle lifting table and the connecting support, one end of the screw rod is fixedly connected with the spindle lifting table, the other end of the screw rod is connected onto the connecting support in a threaded manner, an adjusting mechanism capable of driving the screw rod to rotate is arranged on the spindle lifting table, a feeding mechanism is arranged on the spindle box, and a driving mechanism is arranged between the spindle lifting table and the spindle platen. The vertical distance and the horizontal distance from the spindle platen of the horizontal combined machine tool with the lifting spindle to the working platen can be adjusted, holes aligned to different positions of a plurality of sides of a workpiece can be machined, and the horizontal combined machine tool with the lifting spindle is high in universality.
Owner:ZHEJIANG XILING

Stone sawing machine

A stone sawing machine comprises a fixed frame, a movable frame, a driving wheel, a driven wheel, a ring-shaped saw blade, a orbit, a workbench and a mobile push pressure plate, wherein, lugs are formed on one side of the driving wheel and one side of the driven wheel; holding devices which clamp a downward moving saw blade are arranged on the upper surface and the lower surface of the workbench and a stone respectively; an auxiliary table board is arranged outside the working end of the workbench; the mobile push pressure plate is pushed by a transverse pushing device which comprises a lead screw, a driving device and a slide block; a cooling device is arranged on the machined surface of the stone; the saw blade comprises a saw body, rectangular teeth and blades; the rectangular teeth are formed on one side of the saw body; and two blades are welded on the two sides of the saw body. The stone sawing machine has the advantages that the difficult problem for cutting ultra-wide hard stone flakes is solved; the difficult problem for cutting ultrathin stone flakes is solved; the difficult problem of non-uniform thickness cutting is solved; the difficult problem for curved surface cutting is solved; the manufacturing cost is reduced; and manpower can be reduced, and the work efficiency can be improved by adopting the controlling of an automatic control system.
Owner:陈少波

Anterior cervical vertebra decompression trepan with automatic depth control function

PendingCN109044478ASafe and convenient cutting operationLarge feed forceSurgical sawsMedicineFree state
The invention discloses an anterior cervical vertebra decompression trepan with an automatic depth control function. The trepan includes an internal guide rod and an outer trepan body sleeving the internal guide rod; the outer trepan body is a hollow cavity, teeth are arranged at the lower end of the outer trepan body, a rotary handle is arranged at the upper end, and an inner thread is arranged at the upper portion of the cavity; a self-tapping thread is arranged at the lower portion of the internal guide rod, and a fine thread matched with the inner thread is arranged at the upper portion ofthe internal guide rod; the large diameter of the self-tapping thread of the internal guide rod is smaller than or equal to the inner diameter of the outer trepan body; an observation window is formed in the lower portion of the outer trepan body. Through threaded cooperation between a trepan body and a mechanical device, downward transmission of a cutting force is achieved, and only the rotary handle needs to be rotated, then cutting of a cervical vertebra can be cut off; after the trepan body penetrates through a bone substance, a fixing rod and an annular bone column in the trepan body canstay in a free state, the rotation intensity can be quickly reduced, the cutting depth of the trepan cannot be increased even if the trepan continues to rotate, a downward action force cannot be generated again, and it is ensured that medulla spinalis in a spinal canal cannot be damaged by the trepan.
Owner:SHANDONG UNIV OF TRADITIONAL CHINESE MEDICINE

Double-oil-cylinder feeding system of blast hole drilling machine

The invention discloses a double-oil-cylinder feeding system of a blast hole drilling machine, and belongs to the technical field of mining machinery. The double-oil-cylinder feeding system comprises two feeding oil cylinders, a power head and a movable pulley block, wherein the two feeding oil cylinders are arranged on a tower device in parallel and are supplied with oil by the same hydraulic pump; the power head is pulled by a steel wire rope; the steel wire rope bypasses the movable pulley block and is fixed on the tower device; and the feeding oil cylinders are used for driving the movable pulley block to move, so that the power head can move up and down. The double-oil-cylinder feeding system of the blast hole drilling machine overcomes the inconvenience caused by insufficient power of the existing feeding system of the blast hole drilling machine. Two sets of independent oil cylinder feeding systems are arranged on the two sides of the tower device, the two sets of hydraulic oil cylinders act simultaneously and are in a parallel state, the pressure and the flow are the same, the feeding oil cylinders have the same load, synchronous operation can be realized, the two sides of the power head are stressed simultaneously and are stressed in a balanced mode, and the force of the feeding oil cylinders is converted into the downward pressure and the upward lifting of the power head during working.
Owner:ATLAS COPCO NANJING CONSTR & MINING EQUIP
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