11results about How to "Accurately and securely fixed" patented technology

The invention relates to the technical field of orthopedic surgery, in particular to an orthopedic surgery tracer fixing device which comprises a base, a damping cover is fixedly connected to the surface of the base, two kirschner wire bodies are movably inserted into the base and the damping cover, a mounting groove is formed in the base, and the kirschner wire bodies are arranged in the mounting groove. A kirschner wire locking block is arranged in the center of the interior of the mounting groove, a bolt mounting block is movably connected to one side of the kirschner wire locking block, and a kirschner wire locking bolt is movably connected to one side of the bolt mounting block. The kirschner wire tracer is provided with a base, a kirschner wire body, a mounting groove, a kirschner wire locking block, a bolt mounting block, a kirschner wire locking bolt, a holder, a tracer body, an insertion hole, a movable groove, an adjusting rolling ball, an adjusting rod, a tightening seat, a tightening bolt, a second insertion groove, a positioning pin, a pressure spring, a snap spring and a thrust bearing. The device can be used for installing and fixing the tracer which is simple in structure, low in production and manufacturing cost, high in stability and not prone to damage.

The milling machine comprises a base, a box body is fixedly mounted on the upper surface of the base, a first filter plate is arranged in an inner cavity of the box body, a fixing assembly is arranged in the inner cavity of the box body, a mounting plate is fixedly mounted on the inner walls of the two sides of the box body, and a double-shaft motor is fixedly mounted on the lower surface of the mounting plate; the upper output end of the double-shaft motor is provided with a first moving assembly, one side of the first moving assembly is rotatably provided with a spray head, one end of a rotating shaft is rotatably installed on the first moving assembly, the other end of the rotating shaft is fixedly provided with a fixing ring, the rotating shaft penetrates through a torsional spring, and the lower output end of the double-shaft motor is provided with a second moving assembly. A first magnet plate is arranged on the lower surface of the second moving assembly. By means of the design, cutting fluid can be completely sprayed to a workpiece and a milling cutter, the cooling and lubricating effects are fully achieved, the using effect of the milling machine is greatly improved, meanwhile, filtering equipment can be cleaned and collected in the moving process, and filtering holes are prevented from being blocked by machining chippings.

The invention relates to the technical field of concrete performance testing, in particular to a high-strength pervious concrete strength testing device which comprises a pressure testing machine, a testing table is arranged on the left side of the pressure testing machine, and a fixing unit used for fixing a concrete test piece is arranged at the upper end of the testing table. A testing unit for testing the compressive strength and the breaking strength of the concrete test piece is arranged above the testing table. The fixing unit used by the invention can accurately and stably fix the concrete test piece at the upper end of the test table, accurately align and stably fix the cubic test piece and the cuboid test piece, ensure that the loading force uniformly acts on the surface of the test piece, and avoid stress concentration caused by position deviation or inclination of the test piece; therefore, the authenticity and reliability of the test result are ensured. According to the invention, the structure of the fixing unit can be flexibly adjusted to adapt to the compressive strength test of the cube test piece and the breaking strength test of the cuboid test piece, so that one machine has two purposes.

This utility model discloses a screw nut internal thread grinding machine, comprising: a bed, a fixed worktable on the front side of the bed, a headstock fixedly mounted on the left side of the worktable, and a movable center support on the right side of the worktable; a chuck for clamping the workpiece is mounted at one end of the headstock; a movable dual-axis worktable is mounted on the rear side of the bed, a movable grinding wheel head is mounted on one side of the dual-axis worktable, and a grinding wheel dresser is mounted on the other side; a retractable and rotatable grinding wheel grinding device is mounted at the front end of the grinding wheel head, and a grinding wheel drive device is connected to the grinding wheel grinding device. The bed of this utility model adopts a rectangular structure and is a grinding wheel head movable structure, which, compared with the traditional T-shaped structure machine tool with a movable worktable, has advantages such as high structural rigidity, fast dynamic response speed, good thermal stability, high machining accuracy, and small footprint.

The utility model discloses a bench clamp convenient to mount and dismount, and relates to the technical field of clamps, in particular to the bench clamp convenient to mount and dismount. Comprising a main body, a positioning hole, a clamp, a pneumatic device, a chromium-molybdenum alloy steel interlayer base, a chromium-molybdenum alloy steel clamping block, a transmission shaft, a hydraulic adjusting block, a driven shaft, a rapid clamping device and a rapid die changing device. In the utility model, in the workpiece processing flow, the chromium-molybdenum alloy steel interlayer base and the clamping block are used for providing stable support, the quick clamping device is used for quickly mounting the workpiece, and the quick die changing device is used for quickly changing the clamp, so that the downtime is greatly shortened, and the production efficiency is improved. The pneumatic device and the hydraulic adjusting block accurately adjust the clamping force, and the stability of the workpiece is guaranteed. All functional assemblies are integrated to achieve rapid, accurate and stable workpiece clamping and machining, the product quality and the production efficiency are improved, manpower consumption is reduced, and the operation time is shortened.

The utility model discloses a kind of end mould fixed subassembly, including end mould fixing part;End mould fixing part is along the longitudinal direction of end mould and is located at the outside of end mould, and is detachably connected with the end mould;The top of the end mould fixing part is respectively detachably connected with side mould back frame, and the bottom of the end mould fixing part is detachably connected with bottom mould.The utility model also discloses a formwork system comprising end mould fixed subassembly.The end mould fixed subassembly provided by the utility model can determine the connection position of end mould fixed subassembly and side mould back frame according to the length variation range of the beam to be prefabricated, satisfy the prefabricated construction of any beam length, ensure the accurate and reliable of end mould fixed position, and thus ensure the dimensional accuracy of beam body forming.

The utility model is applicable to the technical field of geological hammers, and provides a geological hammer for geological mineral exploration, which comprises a hammer handle. The connecting seat is arranged on the hammer handle, and an assembling cavity is formed in the connecting seat; the telescopic rod is rotationally arranged in the assembling cavity, and preformed holes which are communicated with each other transversely penetrate through the telescopic rod and the connecting seat; the fastening rods penetrate through the preformed holes; the two fastening bolts are arranged on the outer side of the fastening rod, and a hammer head is arranged on the side, away from the connecting base, of the telescopic rod; the connecting block is arranged at the bottom of the hammer head; according to different working environments and rock characteristics, the overall length can be easily adjusted to adapt to complex exploration scenes, meanwhile, due to the flexible connection design of the hammerhead and the telescopic rod, hammerheads of different shapes, weights or materials can be replaced conveniently and rapidly, diversified working requirements are met, and in addition, the application range is wide. Through the precise telescopic rod fixing mechanism and the antiskid and heat insulation design on the hammer handle, the geological hammer keeps stable and efficient when knocking rocks, and the operation accuracy and safety are improved.

The utility model discloses a tension testing device for a cable. The tension testing device comprises a test board; the stretching unit is arranged in the test bench, the stretching unit is used for stretching the two ends of the cable, the stretching unit is provided with a fixing assembly, and the fixing assembly is used for fixing the two ends of the cable; and the hoisting unit is arranged in the test bench, and the hoisting unit is used for hoisting the center of the cable. According to the utility model, the stretching unit is matched with the fixing assembly, so that the two ends of the cable are accurately and stably fixed, the tension is applied, the tension is uniformly and adjustably applied, the accuracy of test data is ensured, and the hoisting unit simulates a suspension stress scene in actual use of the cable and moves synchronously with the stretching unit; the multi-directional stress test of the cable is realized, the performance of the cable is reflected more truly, meanwhile, the guide assembly provides stable guidance for the hoisting unit, the hoisting process is ensured to be stable, and test errors are reduced.

The utility model provides an engine body sand core structure which comprises a main body core and a truss core, the truss core is provided with a first connecting groove and / or a first connecting part along the height direction of the truss core, and the main body core is provided with a second connecting part and / or a second connecting groove; the first connecting groove and the second connecting part are matched in an inserted mode and fixed in an adhesive mode, and the first connecting part and the second connecting groove are matched in an inserted mode and fixed in an adhesive mode. According to the sand core structure of the engine body, overall core assembly of the truss core is achieved in a core assembly mode, the long and narrow truss core is accurately and stably assembled to the main body core in an insertion and rapid bonding assembly mode, and the truss core is accurately and stably fixed to the main body core in a standing state; and the truss core can turn over by 360 degrees along with the main body core, and does not fall off after long-distance turnover.

The utility model relates to the field of textile machinery, and particularly discloses a gauze cutting stepless adjusting mechanism which comprises a rotation control pipe, and rotation angle scale marks are arranged at the end of the rotation control pipe. The knife rest is in a circular arc shape, and the knife rest is coaxially installed on the rotation control pipe; the tool is coaxially and detachably connected to the tool rest; the sliding piece is fixedly installed on the tool rest, and a first sliding groove for the sliding piece to slide is formed in the rotation control pipe in the axial direction; the bolt can penetrate through the sliding piece to abut against the inner wall of the first sliding groove of the rotation control pipe. According to the scheme, through cooperation of the sliding piece and the first sliding groove, stepless adjustment of the mounting positions of the tool rest and the tool is achieved, and accurate adjustment of the positions of the tool rest and the tool can be achieved.

The utility model discloses an air duct support assembling device capable of reducing working procedures, which is characterized in that vertical rod frames are vertically and fixedly arranged at the tops of the two ends of a cross rod frame, fixed plates are fixedly arranged at the tops of the two vertical rod frames, a groove is transversely formed in the top of the cross rod frame, and a two-way screw rod is rotationally arranged between the two ends in the groove through a bearing; the two-way screw rod is driven to rotate by rotating the handle, so that the two threaded blocks push the moving plate to move upwards through the two hinge rods, the connecting rods are further driven to move upwards, the suckers move upwards to be automatically sucked to the top of a beam, and the beam is automatically sucked to the top of the beam. The air duct support has the advantages that the two ends of the air duct support are supported and positioned, the air duct support can be accurately and stably fixed to the top of a beam even under the work of one worker, the installation speed can be increased, manpower is saved, meanwhile, the air duct support is not prone to skewing in the screw driving process, and the installation quality can be guaranteed.