33results about How to "Reliable traction" patented technology

The invention relates to an injection molding machine for a flat needle material strap. The injection molding machine comprises a machine frame, an injection molding mechanism and an injection mold located on the injection molding procedure. The injection mold comprises an upper mold body and a lower mold body. The upper mold body comprises an upper mold base plate, a stripper plate, an upper mold core board and an upper mold core which are correspondingly matched. The lower mold body comprises an ejection mechanism, a lower mold core board and a lower mold core. The lower mold core is installed on the lower mold core board, and the upper mold core and the lower mold core are correspondingly matched. The lower mold core is provided with a plurality of pouring cavities. The lower mold core is provided with a material strap guide base which is correspondingly matched with the pouring cavity. The material strap guide base is provided with a material strap guide groove with the two ends being through. A material strap feeding device is arranged at the material strap led-in end opening side of the material strap guide groove, and a material strap intermittent traction device which is adapted to the injection molding procedure and used for intermittent traction of the flat needle material strap is arranged at the material strap led-out end opening side of the material strap guide groove. The injection molding machine can automatically convey the flat needle material strap and has the advantages of being high in degree of automation and high in working efficiency.

The invention discloses a traction/locking element, a traction/locking set, an orthodontic bracket, an orthodontic bracket system and a tooth orthodontic method. The traction/locking element comprises a strip-shaped nail body, wherein the area of the cross section of the nail body is 0.06-2.5 square millimeters, and the length of the nail body is 0.8-4.5 millimeters; the front end of the nail body is a first fixed end, and the rear end of the nail body is a first screwing end; the first fixed end is provided with a connecting external thread, and the external diameter of the connecting external thread is 0.2-1.6 millimeters; and at least the end position of the first screwing end is provided with a first force application surface. The invention aims at overcoming the defects of the prior art; the traction/locking element can be used for carrying out traction in time according to the traction opportunity of tooth orthodontics, thereby reducing the discomfort of the oral cavity; and the traction/locking element is very convenient to install and disassemble and is very reliable in traction of teeth.

The invention discloses a production line and production method for producing long-strip-shaped plastic parts. The production line sequentially comprises cooling equipment, traction equipment, cutting-off equipment and collecting equipment in the conveying direction for the long-strip-shaped plastic parts. The production method includes the steps of cooling and sizing, traction, cutting off and collecting for the long-strip-shaped plastic parts. By means of the production line and production method, the production efficiency can be improved, and the labor cost is lowered.

The invention discloses a lower limb resetting device for intramedullary nail surgeries. The lower limb resetting device for intramedullary nail surgeries comprises a rectangular bottom plate, a telescopic shank supporting plate, a thigh backup plate, a kirschner wire and a tensioning bow, wherein the rectangular bottom plate is horizontally placed on an operating bed; the telescopic shank supporting plate is hinged with the upper end of the thigh backup plate; the lower end of the telescopic shank supporting plate and the lower end of the thigh backup plate are respectively hinged with the two ends of the rectangular bottom plate; in surgery, the thigh and the shank of a patient lean against the upper portion of the thigh backup plate and the upper portion of the telescopic shank supporting plate respectively, the kirschner wire penetrates through the far end of the ankle bone or the tibia of the patient, the two ends of the kirschner wire are connected to the two ends of the tensioning bow respectively, and each end of the tensioning bow is connected with the telescopic shank supporting plate through an adjustable support. The patient can be kept in a leg bending state, the tibiaor thighbone of the patient can be reliably pulled, all parts are not higher than the lower limb of the patient, and surgical operation is not affected. The lower limb resetting device can ensure that a tibia or femoral intramedullary nail implantation operation is smoothly carried out, and the operation quality and efficiency are improved.

The invention discloses a street lamp cable efficient traction device comprising a base. Supporting plates are vertically fixed to the two sides of the upper end face of the base. A plurality of traction assemblies are horizontally arranged between the supporting plates on the two sides, each traction assembly comprises a driving shaft and a driven shaft, the two ends of each driving shaft and thetwo ends of each driven shaft are rotationally installed on the supporting plates through bearing pedestals, traction wheels matched with each other are fixed to the driving shafts and the driven shafts, and a plurality of grooves are formed in the traction wheels; a top plate is fixed to the top of the supporting plate and provided with a lifting mechanism for driving the driven shaft to move upward and downward. According to the street lamp cable efficient traction device, traction force is dispersed through multiple traction assemblies, and traction is more stable and reliable; a pluralityof grooves with different opening widths and depths are formed in the traction wheels so that the cable traction device is suitable for traction of cables of different specifications, wide in application range, convenient and rapid to operate and high in traction efficiency.

The invention discloses a full-automatic plastics rolling moulder capable of precise length control. The full-automatic plastics rolling moulder comprises a material outlet which is connected with an extruder, a moulding unit, a cooling unit, a primary traction unit, a belt-type traction unit and a numerical control punching-off unit; the material outlet is arranged above the moulding unit; the cooling unit, the primary traction unit, the belt-type traction unit and the numerical control punching-off unit are sequentially arranged behind the moulding unit; and a space for free falling of products is preserved between the belt-type traction unit and the numerical control punching-off unit. After the technical scheme is adopted, traction during a production process is reliable; the products are conveyed stably; the lengths of the plastic products are precise; the product qualification rate can reach 99%; and the qualification rate is very high.

The invention discloses automatic guiding, sticking and edge sealing equipment for corrugated lines. The equipment comprises an adhesive tape unwinding device and a support; and a first limiting device, an adhesive tape guiding wheel, an automatic adhesive tape guiding and sticking device, an adhesive tape overturning and sticking device and a second limiting device are sequentially arranged on the support in the advancing direction of a corrugated paperboard production line. An upper rocker and a lower rocker which are arranged vertically symmetrically are used for performing adsorbing fixingon an adhesive tape guiding head, so that the adhesive tape guiding head can be pulled reliably; after the upper rocker and the lower rocker are closed, the adhesive tape guiding head and corrugatedpaperboards are clamped together in the upward direction and the downward direction, so that the adhesive tape guiding head is ensured to be stuck to the corrugated paperboards. After adhesive tapes are overturned by overturning clamping plates step by step, the overturned adhesive tapes are extruded onto the upper and lower surfaces of the corrugated paperboards by the aid of adhesive tape scraping plates, the structure is simple and reliable, and potential safety hazards caused by manual operations are eliminated.

The invention discloses a traction device used for producing a medical infusion tube. The traction device comprises a first traction assembly and a second traction assembly which are arranged on a rack in an up-down manner; a first traction synchronous belt in the first traction assembly is driven by a first driving belt wheel to perform up-down rotation running on the first driving belt wheel and a first driven belt wheel; a second traction synchronous belt in the second traction assembly is driven by a second driving belt wheel to perform up-down rotation running on the second driving belt wheel and a second driven belt wheel; the rotating directions of the first traction synchronous belt and the second traction synchronous belt are opposite; a traction gap is reserved between the first traction synchronous belt and the second traction synchronous belt; and a tube material located in the traction gap can be pulled by the first traction synchronous belt and the second traction synchronous belt to run forwards. The traction device has the beneficial effects that the speeds of the first traction synchronous belt and the second traction synchronous belt can be precisely controlled, it is effectively guaranteed that the tube material is reliably and steadily pulled, and therefore the quality of the finished medical infusion tube can be greatly improved.

The invention provides a steel track beam mounting mould applied to the technical field of track traffic construction. A mould bottom plate (1) of the steel track beam mounting mould is connected witha reserved steel bar (18); an adjusting pipe (4) is arranged between the mould bottom plate (1) and a steel beam bottom plate (3); a steel beam lug plate I (6) is connected with a bottom plate lug plate I (9) on one side of the mould bottom plate (1) through a chain block I (8); a steel beam lug plate II (7) is connected with a bottom plate lug plate II (11) on the other side of the mould bottomplate (1) through a chain block II (10); a vertical fine adjustment jack (12) is arranged on the mould bottom plate (1); according to the steel track beam mounting mould and the mounting method thereof, accurate, convenient and rapid mounting of the steel track beam is achieved, the steel track beam does not need to be hoisted and adjusted through a crane, adjustment can be rapidly and accuratelyachieved, the quality risk in construction is reduced, the mounting procedure is simplified, the labor intensity of workers is reduced, and the operation efficiency and safety are improved.

The invention discloses a movable grounding device for a railway wagon. The device comprises a trolley assembly, a pull rod assembly, a traction mechanism and a grounding wire; the trolley assembly isplaced on a steel rail and can move along the steel rail, the traction mechanism is installed on the railway wagon, and the two ends of the pull rod assembly are hinged to the trolley assembly and the traction mechanism respectively to form a rigid force transmitting structure with a rotational degree of freedom; the trolley assembly is pulled by the traction mechanism to run, when the railway wagon brakes and decelerates, the trolley assembly is prevented from moving and self-adapts to the relative displacement change between the traction mechanism and the trolley assembly, and the railway wagon carrying power generation equipment is connected with the trolley assembly through the grounding wire, so that the railway wagon and the steel rail form a dynamically-connected grounding circuit.The movable grounding device achieves the purpose of movable grounding of the railway wagon carrying the power generation equipment, the over-voltage of wagon bearings is effectively avoided, the risk of the bearings is damaged, the life safety of workers is ensured, and the requirement of safe grounding when the railway wagon carrying the power generation equipment runs for power supply can be met.

The invention discloses a production method of a porous mesh steel strip reinforced composite tube. The production method comprises the following steps: S1, a hole mesh steel strip is unreeled from aunreeling machine; S2, the rolled perforated mesh steel strip obliquely winds a welding support barrel to be welded to form a steel strip welded tube; S3, the steel strip welded tube is rotated and penetrates through a rotary composite forming die, plastic fluid extruded by an extruder enters the rotary composite forming die to form an inner plastic layer and an outer plastic layer which wrap thewelded tube of the steel strip, the front end of the rotary composite forming die is provided with an outer sizing die which is in the same direction as the steel strip welded tube to rotate at the same speed, and the composite tube is subjected to outer sizing through the inner hole of the outer sizing die; S4, the composite tube is conveyed into a cooling box for cooling; S5, the composite tubeis synchronously and rotationally dragged by a rotary traction device; S6, the composite tube is cut through an online synchronous cutting machine; and S7, the cut composite tube is folded and stored.The production method can produce the porous mesh steel strip reinforced composite tube with high surface quality on a continuous production line.

A forged tire chain link comprises two attachment apertures and a plurality of integrally forged, spaced upstanding studs having square cross-sections, preferably oriented at 45 degrees to the longitudinal axis of the link. The inside surfaces of the apertures are flat and the base and top of the link body include beveling to the outside in their central portions. The vertical extent of the ends of the link taper to apices. The link provides enhanced traction for forestry and similar environments.

A portable tractor for treating the bone fracture of lower extremity is composed of the external shaped tube with a line of unidirectional stressed teeth having a self-locking angle of 0-45 deg. and 45-80 deg of slide angle on its inner surface and the internal shaped tube in said external one. The handle and foot supporter is fixed to one end of said internal tube and the ratchet unit is fixed to thue other end. A leg supporter is fixed to one end of said external tube. Its advantages are compact structure, easy regulation, and high reliability.

The invention discloses a child thighbone adjustable lever traction support, and belongs to the technical field of medical equipment. The support comprises a base, an inclined supporting frame, a thighbone angulation adjusting mechanism, a thighbone traction mechanism and a pressure regulating mechanism; the inclined supporting frame is obliquely arranged on the base, the thighbone angulation adjusting mechanism is arranged at one side of the inclined supporting frame, the thighbone traction mechanism comprises a first traction support and a second traction support, one end of the first traction support is rotationally connected with one end of the second traction support, the end, away from the second traction support, of the first traction support is slidably connected with the inclinedsupporting frame, the pressure regulating mechanism is arranged on the base and located at the side, away from the thighbone angulation adjusting mechanism, of the inclined supporting frame, and the second traction support is connected with the pressure regulating mechanism. The support is simple in structure and convenient to use, the needed traction force can be provided by adjusting the thighbone traction mechanism, the fracture angulation can be corrected, the thighbone angulation can be further regulated through the thighbone angulation adjusting mechanism, and the reset angle can be obtained.

The invention discloses a surgical instrument connector, and the connector comprises a first connecting assembly and a second connecting assembly; the first connecting assembly is provided with a plurality of transmission parts, the second connecting assembly is provided with a plurality of traction parts matched with the transmission parts, and one end of each traction part is provided with a locking unit; in the butt joint process of the first connecting assembly and the second connecting assembly, the transmission part is connected with the locking unit; when the first connecting assembly and the second connecting assembly are in a set butt joint state, the transmission piece is connected with the traction piece through the locking unit so that the transmission piece can transmit power to the traction piece matched with the transmission piece. The surgical instrument connector disclosed by the invention can realize quick switching between the power assembly and the control assembly, has the advantages of simple structure, quick and convenient switching and the like, and can also realize quick connection and separation between a plurality of transmission pieces and a plurality of traction pieces. The invention further discloses a surgical instrument which has the advantages of being accurate and easy to control, safe and reliable to use and the like.