11results about How to "No deflection" patented technology

The invention relates to the technical field of oil seal press-fitting, in particular to a press-fitting mechanism for installing an oil seal of an automobile part, which comprises a workbench, a gearbox end cover on which the oil seal is to be installed is placed on the workbench, and the oil seal comprises an oil seal outer ring in threaded connection with the gearbox end cover and an oil seal inner ring in interference fit with the oil seal outer ring. A guide table is fixedly installed on the workbench, a butt joint module for containing the outer ring of the oil seal is installed in the guide table in a penetrating and sliding mode, a rotating module arranged on the inner ring of the oil seal in a sleeving mode is arranged at the top of the butt joint module, and a lifting module for driving the rotating module to vertically ascend and descend on the gearbox end cover is arranged at the top of the rotating module; the lifting module drives the rotating module to descend to press the oil seal inner ring into the oil seal outer ring on the guide table for interference fit, then the lifting module and the rotating module drive the oil seal inner ring and the oil seal outer ring to descend and rotate at the same time, and after the oil seal outer ring is screwed into a gearbox end cover for threaded connection, the lifting module drives the rotating module to be pulled out of the oil seal inner ring.

The invention discloses a lower discharging foaming device which comprises a movable base, a lower discharging foaming device, a lower discharging foaming device and an upper discharging foaming device, and a walking wheel set is arranged at the bottom of the movable base; the vertical bracket is fixedly mounted on the movable base; the variable-length flow guide mechanism comprises a flow guide channel which is arranged in an inclined mode and is telescopic in length, and the higher end of the flow guide channel is connected with the upper portion of the vertical support; the length adjusting driving mechanism is mounted on the vertical bracket, is in transmission connection with the movable part of the length-variable flow guide mechanism, and is used for driving the movable part to move so as to change the effective length of the flow guide channel; and the buffer mechanism is arranged in the groove of the flow guide groove channel and is used for providing damping buffer when the foaming profile slides down along the groove.

The invention provides a mounting tool for a pin shaft, and relates to the technical field of assembly tools, the mounting tool for the pin shaft comprises a moving trolley, and the moving trolley comprises a base; the support frame is mounted on the base in a lifting manner; the jacking mechanism is installed on the supporting frame and used for jacking the pin shaft to be assembled; wherein the supporting frame has a working state and a moving state, in the working state, the supporting frame descends to make contact with an external supporting body, and in the moving state, the supporting frame ascends and is fixed to the moving trolley. According to the scheme, the pin shaft is stably pressed into the coaxial mounting hole of the frame through the mounting tool, the assembling efficiency and safety of the pin shaft are improved, and the labor intensity of operators is reduced. Meanwhile, when the installation tool is in press-fitting operation, the supporting frame is separated from the moving trolley, trundles of the moving trolley are not pressed, the situation that the trundles of the trolley are damaged by press-fitting counter force is avoided, and the service life of the installation tool is prolonged.

This utility model relates to the technical field of oblique insertion automatic sheet expansion machine, and in particular to a mold and pressing mechanism for small-pitch products in an oblique insertion automatic sheet expansion machine. The mold and pressing mechanism for small-pitch products in an oblique insertion automatic sheet expansion machine includes a mold assembly and a pressing mechanism. The mold assembly includes a mounting base plate and several sheet-shaped molds arranged side-by-side, with equal spacing between adjacent molds. Each sheet-shaped mold has an inserting tooth portion and a connecting portion. The inserting tooth portion consists of multiple parallel-arranged first inserts, and the connecting portion is a top notch cavity. The pressing mechanism includes a cantilever, a cylinder, and a pressure plate assembly. Below the pressure plate assembly is a mold reinforcing plate corresponding to the sheet-shaped molds. Its second inserts engage with the inserting tooth portion, and the snap teeth engage with the notch cavity. This structure effectively enhances mold rigidity through dual positioning, preventing deformation during small-pitch production, while also facilitating rapid mold changeover, making it suitable for precision expansion processing of small-pitch products.

A kind of sealing patching tool, it includes patching pipe assembly, expanding assembly and flow distributor, the patching pipe assembly includes patching pipe and sealing hanger, the patching pipe is matched with casing damage well casing specification Steel pipe, length is 8m-12m, both ends are all turned to sealing thread capable of being connected with sealing hanger;The sealing hanger is composed of hanger pipe, rubber sealing ring, metal sealing ring, the hanger pipe is a section of reducing steel pipe, the diameter of one end with sealing thread is same with the diameter of patching pipe, the diameter of one end with rubber sealing ring and metal sealing ring is installed is less than the diameter of patching pipe, two sets of sealing hangers are provided in each set of tool, are installed in the both ends of patching pipe by sealing thread respectively, the utility model sealing pressure is high, hanging is reliable, patching pipe does not produce flexure, patching section drift diameter is big, secondary extraction is easy.

This invention provides a method for manufacturing a compressor piston. The compressor piston includes a hinge hole and a snap-fit ​​position with a width smaller than the hinge hole. The hinge hole is used to connect a transmission component to achieve eccentric rotation of the compressor piston and crankshaft, thereby compressing air. The manufacturing method includes: preparing a piston body; milling the piston body to form an initial groove on the outer wall of the piston body; the initial groove penetrating both end faces of the piston body; using a broach to enlarge the end of the initial groove away from the outer wall to form the hinge hole; the diameter of the hinge hole is larger than the width of the initial groove; and surface treating the piston body to obtain the compressor piston. This invention solves the problem of low processing efficiency caused by the need for repeated rough and fine grinding of the piston hinge surface to achieve higher precision.

The application discloses an out-of-cabin mounted cabin safety valve with a modular excess pressure mechanism and a method. The cabin safety valve comprises a shell (1), a diaphragm (2) arranged in the inner cavity of the shell (1), and a knife-edge valve (3) arranged on the bottom surface of the diaphragm (2). The upper surface of the diaphragm (2) and the shell (1) form a B cavity, the inner side of the knife-edge valve (3) and the shell (1) form an A cavity, and the outer side of the knife-edge valve (3), the bottom surface of the diaphragm (2) and the shell (1) form an atmosphere cavity (4) which is connected with the atmosphere. The A cavity and the B cavity are connected through a hollow valve rod (5). The B cavity is connected with an excess pressure mechanism. The cabin safety valve solves the problems of poor control precision, difficult product debugging and easy fluctuation of excess pressure value under high-altitude conditions.

The utility model belongs to the technical field of transfer carts, and particularly relates to a chemical storage tank transfer cart with a positioning structure, which comprises a discharging plate, a U-shaped frame is mounted at the top of the discharging plate, a plurality of support rods are mounted on the inner wall of the U-shaped frame, arc-shaped rods are arranged at the top of the discharging plate and are symmetrical to the U-shaped frame, and the positioning structure is arranged on the arc-shaped rods. A clamping piece is installed at the arc-shaped rod and used for clamping a workpiece, and a supporting part is arranged at the top of the discharging plate. Through the elastic adjustment of the supporting part and the accurate positioning of the clamping piece, the trolley can be adapted to chemical storage tanks with different heights and diameters. Through combination of the second supporting rods and the spring barrels, the positions of the arc-shaped rods can be dynamically adjusted according to the height of the storage tank, transportation vibration can be buffered, and damage to the storage tank or equipment caused by rigid impact is avoided; through the synergistic effect of the lead screw and the guide rod, clamping force of the clamping piece is evenly distributed and free of deflection, and it is guaranteed that the storage tank is stable and free of displacement under the complex road condition.

The utility model discloses a pull-type reset flushing and filling valve which comprises a valve body, a valve element is arranged in the valve body, the valve body and the valve element are connected in a sealed mode through a sealing piece, a spring is arranged on the outer side of the rear end of the valve element in a sleeved mode, a plurality of guide sliding blocks are arranged on the outer side of the front end of the valve element in an annular array mode, and the guide sliding blocks are connected with the inner wall of the valve body in a sliding mode. The valve core is designed with a guide matching structure, a conical spring elastic traction mode is adopted for resetting, guide and traction double insurance is realized to ensure that the valve core does not deflect in the resetting process, meanwhile, the valve core is designed with a guide taper, and a valve body sealing surface inlet is also designed with a guide taper to ensure that the valve core can be smoothly reset under any condition; meanwhile, one end of the spring is positioned by a step of the valve body, the other end directly acts on the valve core, excessive conversion of middle parts is avoided, and the spring is prevented from being installed obliquely to the greatest extent; moreover, the design scheme without a positioning piece is adopted, so that the hidden danger of rusting of the positioning piece is completely eradicated.

This application discloses a method for reducing defects in silicon carbide crystals, comprising: dividing the interior of a crucible into sequentially adjacent regions A, B, and C using graphite paper rings; adding pretreated silicon carbide raw materials to each region; fixing a seed crystal at the top of the crucible; and performing physical vapor transport growth, annealing, and cooling. The silicon carbide raw material is added in a manner that is high at the center and low at the edges. This method utilizes a flow channel formed by adding graphite paper rings into the crucible, and a stepped loading method to create a loading pattern with low edges and a high center, guiding the orderly volatilization of the airflow. Simultaneously, it ensures that the remaining material does not skew or collapse during the growth process, suppressing and reducing phase transitions and inclusion formation at the source, thereby obtaining high-quality, low-defect silicon carbide crystals.

The utility model discloses a control valve assembly point riveting limiting device for a vacuum booster production line, which comprises a mounting plate, an oil cylinder is fixed on the mounting plate, and a riveting knife is mounted on a piston rod of the oil cylinder; a guide seat is further fixed on the mounting plate, a fixing groove is formed in the guide seat, and the structure of the fixing groove is matched with that of a spring seat of the control valve assembly; a lifting device is arranged above the guide seat, and a pressure head is mounted at the lifting end of the lifting device; a screw is rotatably arranged on the mounting plate below the guide seat and can circumferentially rotate on the mounting plate, a rotary handle is mounted at the lower end of the screw, a positioning seat is mounted at the upper end of the screw, a positioning square hole is formed in the positioning seat, the structure of the positioning square hole is matched with that of the lower end of an air valve seat of the control valve assembly, and the riveting cutter is horizontally arranged. And the riveting knife faces between the positioning seat and the guide seat. When the riveting tool is used for riveting a control valve assembly, the tool can be quickly replaced, and the assembling efficiency is improved.