11results about How to "Simple and durable structure" patented technology

The invention relates to the technical field of measuring rulers, and provides an integrated lower limb girth standard measuring ruler, which comprises a measuring arm, one end of the measuring arm is fixedly connected with an insertion shell, the outer wall of the insertion shell is fixedly connected with a fixed semi-ring, one end of the fixed semi-ring is rotatably connected with a movable semi-ring, the movable semi-ring is arranged in the insertion shell, and the insertion shell is fixedly connected with the fixed semi-ring. The inner wall of the plugging shell is connected with a fixed plate through an elastic assembly, the outer wall of the fixed plate is connected with the outer walls of the movable semi-rings through a limiting assembly, the inner wall of the plugging shell is provided with a guide assembly, the outer wall of one end of the measuring arm is provided with an alignment line, and the close sides of the two movable semi-rings are provided with scale lines. Positioning is convenient and accurate, two-leg measurement can be completed within half a minute through three-step operation, data stability is guaranteed through a fixing structure, and comparison is convenient. The inner soft cushion protects the skin, is free of electronic elements, durable in structure, low in cost and suitable for high-frequency use of multiple departments such as traditional Chinese medicine rehabilitation, blood vessels and the orthopedics department.

The application relates to a detachable built-in filter cartridge with filter material convenient to replace, belonging to the technical field of fluid filtration, which comprises a filter cartridge body and a filter cylinder body, a filter cartridge top seat and a filter cartridge bottom seat are fixedly arranged at the upper end and the lower end of the filter cartridge body respectively, the filter cylinder bottom seat and the filter cartridge bottom seat are matched through a rotating clamping structure, a filter cylinder cover is rotatably clamped at the top of the filter cartridge top seat, and a filter cartridge discharge port is arranged at the bottom of the filter cartridge bottom seat. The filter cartridge top seat is provided with a first locking ring with a first protrusion, the filter cartridge bottom seat is provided with a second protrusion, and the first locking ring and the second protrusion are matched with corresponding circular sliding grooves and protrusions respectively to realize quick dismounting and positioning. Equal-diameter circular filter holes are arranged in the circumferential array outside the filter cylinder body, and filter cloth is sewn on the inner wall of the filter cartridge body to realize filtration. The detachable structure is adopted, the problem that filter material of a traditional integrated filter cartridge cannot be replaced and maintained is solved, the detachable filter cartridge has the characteristics of convenient dismounting and assembling, stable assembly, uniform liquid inlet filtration, good dustproof effect of the top, effectively reduced use and maintenance costs, and is suitable for various fluid filtration working conditions and has high practicability.

The application provides a single-column shock-absorbing signboard support and a use method thereof, and belongs to the technical field of municipal engineering; the signboard support comprises a stand column, a base is arranged at the bottom end of the stand column, a signboard panel is arranged at the top end of the stand column, the stand column comprises a movable pipe and a fixed pipe arranged coaxially, the bottom end of the movable pipe is inserted into the inside of the top end of the fixed pipe in an axially rotatable manner, the movable pipe and the fixed pipe overlap in the axial direction and form a damping energy dissipation section; the damping energy dissipation section is provided with a friction damping piece, a pre-tightening adjusting mechanism and a shear pin; the friction damping piece is attached to the outer wall of the movable pipe; the pre-tightening adjusting mechanism is arranged on the fixed pipe, and the inner end of the pre-tightening adjusting mechanism abuts against the friction damping piece; and the shear pin is inserted into the damping energy dissipation section in a radial direction. The shear pin can meet the use requirements of the signboard support under normal working conditions and working conditions with excessive load, so that the signboard panel and the stand column can be effectively prevented from being damaged or overturned; and the pre-tightening adjusting mechanism can meet the requirements of dissipating earthquake and wind-induced energy under different working conditions.

The utility model discloses an isokinetic sampling cup vacuum seal cover with press type exhaust device, including the cover body main part, the cover body main part adopts the cylindrical structure that is matched with isokinetic sampling cup top opening, the inside of cover body main part is equipped with the mounting hole, the top of cover body main part is conically arranged, the top of cover body main part is equipped with the recess, the inner wall of recess is connected with press button slidingly, the bottom of press button is connected with exhaust valve core, the bottom of exhaust valve core and the inner wall of mounting hole are contacted. The utility model, through setting up pressable exhaust structure at the top of vacuum cover, when generating negative pressure in the pipeline, just need to press exhaust structure simply to balance the pressure of both ends of cover body, and the operator does not need to help extra tool, and easily can pull open vacuum cover, greatly simplifies the operation process, and improved the operation efficiency of on-line particle monitoring system.

The utility model relates to the field of luggage accessories, concretely relates to a combined USB base, including bottom base and protruding seat, the bottom base bottom is equipped with the openwork, the protruding seat is formed from the openwork vertical extension, its top is equipped with the USB plug -pull opening, still include the hidden frame, the hidden frame is the hollow square ring structure, is equipped with in the protruding seat outside and can axial slip, the protruding seat outside is equipped with the annular limiting flange that limits the hidden frame and moves up, through the hidden frame structure of axial slip, after the completion of the sewing, completely covers the seam line of bottom base and fabric, realizes "invisibility" installation effect.

The utility model discloses a switch machine transfer tool which comprises four lifting handles, a supporting frame and four lifting rods, each lifting handle is provided with a handle section and a limiting section which are connected, and the supporting frame is formed by fixedly connecting an upper-layer rectangular frame and a lower-layer rectangular frame through four connecting rods. The four right-angle portions of the upper-layer rectangular frame are each fixedly connected with a right triangle reinforcing plate, and each reinforcing plate is provided with a vertically-through positioning hole. The lifting rod comprises a holding pipe and a fixing rod, the fixing rod is formed by vertically connecting a connecting section and a fixing section and is in an L shape, the connecting section is detachably connected with one end of the holding pipe, a handle section and a limiting section of the lifting handle are also vertically connected into an L shape, and the handle section is detachably connected with the other end of the holding pipe. The diameter of the fixing section is smaller than the diameter of the positioning hole and the diameter of the point switch bottom hole so that the fixing section can penetrate through the positioning hole and the point switch bottom hole at the same time, and a fixing piece is detachably installed on the fixing section and used for fixing the point switch to the supporting frame. The utility model has the advantage that the switch machine is convenient and safe to rotate.

The utility model discloses a kind of capillary chromatographic column synchronous filling instruments, it is related to chromatography technical field, capillary chromatographic column synchronous filling instrument includes: filling module and chromatographic column connector assembly, filling module is equipped with filler mouth, pressure supply interface and chromatographic column interface;Wherein, chromatographic column interface includes connecting mouth section and sealing mouth section, the inner diameter of connecting mouth section is greater than the inner diameter of sealing mouth section to form step surface at the connecting place of connecting mouth section and sealing mouth section, fixed joint includes threaded connection part and conical sealing part, threaded connection part is connected with connecting mouth section by screw thread, at least part of conical sealing part extends into sealing mouth section and conical sealing part is pressed on the inner peripheral edge of step surface.According to the capillary chromatographic column synchronous filling instrument of the utility model, long-term stable dynamic sealing can be realized under high pressure, the risk of liquid leakage is eliminated, the structure is simple and durable, the use of parts is reduced, assembly is simple, cost is reduced, and the use range is wider.

The utility model relates to a split washer mounting device which comprises a main body, one end of the main body is provided with a clamping part used for clamping a split washer, the main body is provided with a guide groove, the guide groove is communicated with the clamping part, the guide groove is filled with a medium which adsorbs the split washer through viscosity, and the main body is provided with an opening. And the split washer arranged in the clamping part is adsorbed and adhered by utilizing the viscosity of the medium. According to the split washer clamping device, the split washer arranged in the clamping part is adsorbed by a medium, so that the device can be suitable for split washers made of any material, is not limited by the material of the split washer, and is higher in universality.

This utility model discloses a tapping fixture for threaded holes in large high-strength steel components, comprising: a rod-shaped component with a square column at one end for connecting a tapping machine, and a cylinder and a hexagonal head at the end of the cylinder at the other end; a cylindrical component including a cylindrical part and a cylindrical part welded together; the cylindrical part having a square inner hole for mounting a tap; the cylindrical part having a semi-closed hexagonal hole matching the hexagonal head and a through hole with clearance fit to the cylinder; wherein, the hexagonal head and the semi-closed hexagonal hole, and the cylinder and the through hole, are all large clearance fits, realizing circumferential limiting and axial floating connection between the rod-shaped component and the cylindrical component. The two parts of this utility model fixture are flexibly connected, transmitting unidirectional torque, improving the perpendicularity of the threaded hole, solving the problems of poor perpendicularity and high risk of tap breakage in the machining of threaded holes in large components, significantly improving machining efficiency and reducing costs.

The application discloses a kind of anti-rebound mechanisms for blasting door opening, including base, shell, locking rotary arm, reset mechanism, unlocking mechanism and stopper;Shell is fixedly installed on base;Locking rotary arm is rotatably installed on shell by a rotating shaft;Reset mechanism is arranged between shell and locking rotary arm, for providing elastic reset force to locking rotary arm so that it has a tendency to rotate towards the locking position;Unlocking mechanism includes electromagnet and connecting head, electromagnet is fixedly installed on base, connecting head one end is fixedly connected on locking rotary arm, the other end is drivingly connected with the core of electromagnet;Stopper is fixedly connected on blasting door.Wherein, the locking rotary arm has a locking position in the reset mechanism drive and embedded with stopper to prevent the rebound of blasting door, and an unlocking position in the electromagnet drive and separated from stopper by overcoming the reset force of reset mechanism.The application can realize reliable locking and quick unlocking, simple and durable structure, easy to install and maintain.

This utility model discloses a highly stable side-sweeping bracket for a rolling mill, comprising a base, a support bracket assembly, and a side-sweeping bracket assembly. The support bracket assembly is mounted on the base, and the side-sweeping bracket assembly is installed within the support bracket assembly. The side-sweeping bracket assembly includes a bakelite board, a first side plate, and a second side plate. Two first side plates are positioned on the left and right sides of two second side plates, forming a rectangle. The sides of the first side plates have strip-shaped holes through which they are mounted on the support bracket assembly. The bakelite board is mounted above the first and second side plates. This side-sweeping bracket exhibits high stability and versatility. Its modular design allows for flexible adaptation to different specifications of steel strips through adjustable locking bolts and strip-shaped holes. The multi-support rod structure of the base and the rectangular frame enhance vibration resistance.