7results about How to "Large axial force" patented technology

The present application provides a fully automatic biopsy needle, which belongs to the technical field of biopsy needles, specifically, comprises: a shell, a biopsy needle assembly, a first electromagnetic navigation sensor, a firing assembly, a trigger assembly, and a locking assembly, wherein the locking assembly comprises a locking piece, and in the locking position, the locking piece blocks the trigger assembly from moving toward the trigger position; a fixed support disk is formed in the shell, and when the locking key moves to the locking position, the distal end side of the locking piece abuts against the fixed support disk, and the locking assembly is arranged between the trigger assembly and the firing assembly to block the trigger assembly from moving to the trigger position, so as to avoid arranging the locking assembly on the firing path of the firing assembly, and when the firing assembly fires, the firing assembly has switched from the energy storage state to the firing state, and the locking assembly blocks the firing assembly from firing on the path of the firing assembly, and the firing assembly will always maintain the firing state, and the spring elastic force is relatively large, so the locking assembly is easily invalidated under the long-term elastic force compression.

The utility model relates to the field of production and processing automation equipment, in particular to an automatic plate turnover device which comprises a left stand column, a right stand column, a turnover device and an electric cabinet, lifting devices are arranged on the left stand column and the right stand column, the lifting devices are connected with the turnover device, and the electric cabinet is connected with the left stand column and the right stand column. The left stand column and the right stand column are arranged on the lifting device, a rotating assembly is arranged on the lifting device on one side of the right stand column, the rotating assembly is connected with the turnover device, position switches are arranged on the left stand column, the right stand column and the lifting device, and the rotating assembly, the position switches and the lifting device are all electrically connected with the electric cabinet. The problems that at the present stage, most of overturning devices adopt swing arm rotating shaft type overturning, and due to the fact that the size of a plate is large, the weight is heavy, and large burden and damage can be caused to the devices in the using process are solved.

The utility model discloses a double-screw flowmeter, which relates to the technical field of measuring instruments and comprises a measuring chamber and two screws, and the two screws are arranged in the measuring chamber and meshed with each other. The two screw rods are respectively a driving screw rod and a driven screw rod, the correspondingly arranged end parts of the two screw rods are respectively provided with a thrust bearing assembly, and the end part of the driving screw rod, which is not provided with the thrust bearing assembly, is connected with a flow instrument; the thrust bearing assembly comprises a mixed ceramic ball bearing arranged on the outer peripheral face of the end of the screw; the alloy rotating piece is arranged on the end face of the screw rod and is used for synchronously rotating with the screw rod; the alloy static part is located on the outer side of the end face of the screw and provided with a working face facing the alloy rotating part, the working face is rotatably connected with the end face, facing the alloy static part, of the alloy rotating part, and the surface area of the working face is smaller than that of the end face, facing the alloy static part, of the alloy rotating part. According to the double-screw flowmeter, the service life is prolonged, the durability is improved, and the use precision is improved.

The utility model belongs to the technical field of motor machining tools, and particularly relates to a base for machining a motor stator. A base for motor stator machining comprises a base body, a rotary table is rotationally connected to the base body, the rotary table is provided with a first annular protrusion extending upwards, and the first annular protrusion defines a receding groove used for receding a coil of a stator winding. The upper end face of the first annular protrusion is used for making contact with the axial end face of a stator iron core. The rotary table is further provided with a positioning column extending upwards, the positioning column is located in the center of the receding groove, and the positioning column is used for penetrating through an inner hole of the stator assembly. The utility model has the advantages that the stator assembly is more stable during rotation, and the stator assembly is prevented from toppling over.

The utility model relates to a kind of and motor shaft's connection mechanism of holding tightly. The connection mechanism of this kind and motor shaft's holding tightly by the threaded connection between motor shaft and shaft coupling makes it in the process of using Effectively Realize the effect of convenient disassembly, ensure its convenience in the process of installation or disassembly;By inserting expansion sleeve between motor shaft and shaft coupling and locking it by locking member, it can effectively realize the close fit between motor shaft and shaft coupling, so as to provide greater torque and axial force;And this kind of way assembly difficulty is small, disassembly process will not damage the surface of motor shaft and shaft coupling;So that expansion sleeve can have greater shape degree, can increase its adaptability in the process of use, so as to realize without higher machining accuracy in the process of processing, reduce its processing cost.

The present invention relates to the technical field of construction machinery, and specifically to a drilling rig power head integrating sonic drilling and high-pressure rotary spraying. The present invention provides a drilling rig power head integrating sonic drilling and high-pressure rotary spraying, comprising a vibration component, a rotary spraying component, a rotary drive component, a frame and a power head output shaft; the vibration component is provided with a vibration unit; the upper end of the power head output shaft is connected to the vibration component through the thrust bearing; the diverter pipe shaft on the rotary spraying component is connected or separated with the power head output shaft through a coupling device; the power head output shaft is connected to the rotary drive shaft of the rotary drive component through a spline. The present invention can realize the integration of sonic drilling and high-pressure rotary spraying functions on a power head, and the switching is convenient, which is conducive to carrying out pile foundation engineering operations in a narrow space.