16results about How to "Increase contact length" patented technology

The invention discloses a moving contact applying a comb-shaped contact finger structure and a clamp type disconnecting switch, relates to the technical field of disconnecting switches, and is used for solving the problem that the existing clamp type disconnecting switch is concentrated due to clamping force or stress. The moving contact comprises a push plate, supporting pieces, a contact finger, a clamping spring and a mounting plate, the end part of the push plate is connected with one end of the supporting piece on the corresponding side through a connecting plate, the other end of the supporting piece is hinged with the mounting plate, one end of the supporting bent plate is hinged with the mounting plate, and the other end of the supporting bent plate is hinged with the clamping spring. The clamping spring is located between the supporting piece and the other end of the supporting bent plate. The two groups of contact fingers are symmetrically arranged between the two supporting bent plates, one end of each contact finger is fixedly connected with the supporting bent plate on the corresponding side, and the other end of each contact finger is in a comb tooth shape and is used for being in contact with a static contact; one end of the pressing plate is fixedly connected with the other end of the supporting bent plate, and the other end of the pressing plate is contacted with the other end of the contact finger from the inner side. Reliable clamping force exists between the clamping device and the static contact.

The invention relates to the technical field of electric explosion valves, and particularly discloses an electric explosion valve device which comprises a valve body, a valve element, a cut-off pin and a detonator assembly. The valve element is arranged in the containing cavity in a sliding mode and provided with a through hole, and the through hole intersects with the axis of the valve element. The cut-off pin is inserted into the through hole, and the two ends of the cut-off pin are connected with the valve body. The detonator assembly comprises a detonator which is arranged in the containing cavity. When the electric explosion valve device works, the detonator is detonated, high-pressure and high-kinetic-energy gas generated by the detonator pushes the valve element to move, and the valve element cuts off the two ends of the cut-off pin. The two ends of the cut-off pin are connected with the valve body, the contact length of the cut-off pin and the valve body in the radial direction of the valve body is increased, the cut-off pin does not need to extend out of the valve body in the radial direction of the valve body, and the radial size of the electric explosion valve is conveniently controlled. Besides, compared with the prior art that a plurality of cut-off pins are arranged on one side of the valve body, the cut-off pins penetrate through the valve element through the through holes, the two movable sides of the valve element cut off the two ends of the cut-off pins, and the two sides of the valve element are evenly stressed.

The utility model relates to the technical field of detection equipment, and particularly discloses a steel structure digital detection device based on three-dimensional scanning, which comprises a plurality of lifting sleeves, the lifting sleeves are sequentially and slidably sleeved and clamped, the upper end of the innermost lifting sleeve is connected with a scanner through a quick release assembly, and the lower end of the outermost lifting sleeve is connected with a base. An air cavity is formed in the base, a winding reel is installed in the air cavity, and a traction rope is wound around the middle of the winding reel. According to the utility model, the lifting sleeve can be pushed by gas to drive the scanner to move up and down, so that the effect of conveniently adjusting the height of the scanner is realized, the scanner with higher height can enable the scanning radius to be larger, the scanning efficiency of the scanner on a steel structure is improved, and through the arrangement of the traction rope, the scanning efficiency is improved. And the height of the lifting sleeve can be restrained, so that the internal air pressure of the base and the lifting sleeve is higher, and the lifting sleeve and the scanner are not easy to shake up and down.

The utility model discloses a peritoneal dialysis nursing frame with controllable temperature, which comprises a base, a lifting rod and a hanging frame, the lifting rod is fixedly arranged at the center of the base, and a hook is arranged above the lifting rod; comprising a clamping mechanism; comprising a heater, the heater is arranged above a lifting rod through a sleeve, the heater comprises a box body and a cover plate, a plurality of baffles are arranged in the box body in parallel, heating wires are arranged in the baffles, and a controller is arranged on the outer side of the box body. Compared with the prior art, the peritoneal dialysis device has the advantages that the structure is simple, a peritoneal dialysis liquid bag can be hung on the peritoneal dialysis device, a waste liquid bag used during dialysis can be placed at the bottom of the peritoneal dialysis device, and an infusion tube can be heated through the heater; a plurality of baffles are designed in the warmer, so that the contact area between the warmer and the infusion tube is increased, and the warming effect is good.

The application relates to the technical field of medical care, in particular to an infusion automatic heat preservation device for operating room nursing, which comprises a spiral covering type heating belt, a control module and a power supply unit. An electric heating wire is internally insulated and packaged in the spiral covering type heating belt, and a temperature sensor is arranged on the inner surface of the spiral covering type heating belt. The spiral covering type heating belt is in a strip structure, is used for being spirally wound on one end of an infusion tube close to a human body, and makes the inner surface tightly adhere to the outer wall of the infusion tube. The control module is arranged on the outer surface of the spiral covering type heating belt and is electrically connected with the electric heating wire and the temperature sensor, is used for controlling the heating state of the electric heating wire according to the feedback signal of the temperature sensor, and the power supply unit is used for supplying power for the control module and the electric heating wire. The application provides the infusion automatic heat preservation device which can realize accurate end heating, has high heat exchange efficiency, is compact in structure and safe and reliable.

Embodiments of the present invention disclose a recess structure for reinforcing a connection between a sleeper and a track bed (10), the recess structure being used in a ballastless track to reinforce the connection between a prefabricated sleeper unit and a subsequently-placed track bed (10). A reinforcing member (3) is provided at one or more sidewalls in a transverse direction of the sleeper, that is, in a longitudinal direction of the track. The reinforcing member (3) is a recess recessed inward from the sidewalls of the sleeper, such that during a pouring and placing process of the track bed (10), the recess and a certain height of the sleeper are buried in concrete of the track bed (10) and integrated with the same by means of concrete pouring, the concrete directly filling the recess so as to reinforce the connection between the sleeper and the track bed (10).

This utility model discloses a connection structure for terminals and enameled wires, relating to the field of conductive component assembly technology. It includes a terminal frame body and connecting components. A winding block is installed on the side of the terminal frame body. The connecting components, used to increase the welding length, are disposed on the side of the terminal frame body, and two sets of connecting components are provided. Each connecting component includes a welding terminal strip and an enameled wire body, with the enameled wire body disposed on the inner side of the welding terminal strip. The welding terminal strip and the terminal frame body form a V-shaped structure. This connection structure for terminals and enameled wires pre-presses the V-shaped terminal structure during welding, allowing the V-shaped terminals to contact before welding. The welding width of the terminal can be designed to be 1.6–2.0 mm, thereby increasing the contact length between the enameled wire and the terminal, increasing the welding length between the terminal and the enameled wire, forming a wider welding process range, and simplifying the inspection of the welding position after welding, thus reducing the product scrap rate.

The utility model relates to the technical field of lifting appliances, in particular to a special lifting appliance for a cement prefabricated part, which solves the problems that the length of a clamping block of an existing lifting appliance cannot be adjusted and the clamping is unstable when a short clamping block clamps a longer prefabricated part by arranging a clamping assembly, so that the use effect of the lifting appliance is better, and the lifting appliance is convenient to use. By arranging the clamping assembly, the problems that the length of a clamping block of an existing lifting appliance cannot be adjusted, and clamping is unstable when a long prefabricated part is clamped by a short clamping block are solved, so that the using effect of the lifting appliance is better.

This utility model discloses an L-shaped battery that is easy to stack, comprising at least two L-shaped battery bodies. Each battery body has a protrusion and a groove that matches the protrusion. Two adjacent battery bodies are stacked and assembled by the matching protrusion and groove. The protrusion is detachably mounted on the battery body, and a limiting component is provided between the stacked protrusion and groove. This L-shaped battery, through the matching of the protrusion and groove, precisely guides alignment and improves stacking efficiency; the detachable protrusion facilitates individual replacement, reducing maintenance costs; the limiting component enhances the connection stability after stacking, prevents separation due to vibration, ensures the reliability of the battery pack structure, and is suitable for multi-layer stacking scenarios.

The application provides a bevel edge fast-feeding turning tool, which comprises a bevel edge fast-feeding tool bar and a bevel edge fast-feeding tool piece; one side of the top corner side of the bevel edge fast-feeding tool piece is chamfered by 17.5 degrees as a rake face; the other side of the top corner side of the bevel edge fast-feeding tool piece is chamfered by 10 degrees as a relief face; the intersection of the rake face and the relief face is a cutting edge; and the outer edge of the cutting edge is a blade edge chamfering. The bevel edge fast-feeding turning tool has the advantages that the contact length of the main cutting edge of the tool piece and the chip is prolonged through the special blade edge design concept, the concentrated wear of the tool tip position is shared, the heat dissipation area of the tool tip is increased, the blade edge wear is delayed, and the service life of the tool piece is prolonged; and the bevel edge fast-feeding turning tool breaks through the limitation that the conventional tool piece takes the tool tip arc as the blade edge, and the tool bar angle is deflected and the top side of the tool piece is chamfered, so that the chip thickness is ensured, the feeding speed is increased, and the surface roughness is reduced.

The invention relates to a miniaturized wind power variable pitch speed reducer and an assembling method thereof.The miniaturized wind power variable pitch speed reducer comprises an output gear shaft, the contact portion of the output gear shaft and an output end planet carrier is in a similar circular truncated cone shape, a taper hole used for being matched with the output gear shaft is formed in the output end planet carrier, and the output gear shaft and the output end planet carrier are connected in a conical interference fit mode; and a double-row reducing four-point contact ball bearing is arranged between the output end planet carrier structure and the lower box body. The double-row reducing four-point contact ball bearings are adopted for fixing and supporting, the supporting rigidity and the bearing capacity of the speed reducer are improved, the height of the whole machine is reduced, and the space occupancy rate of the speed reducer in a hub is reduced; the coaxiality of the inner ring and the outer ring is ensured while the contact surface is increased, the assembly process is greatly simplified, and the requirements on the process and equipment are further reduced.

The present invention relates to the technical field of shock-absorbing bushings, and specifically to an anti-skid shock-absorbing bushing for an automobile swing arm, comprising an outer tube rubber spring and an inner tube, wherein the outer tube, the rubber spring and the inner tube are coaxially sleeved from outside to inside, the rubber spring comprising an annular groove and a connecting portion, wherein the connecting portions are 2 in number and symmetrically arranged at the front and rear ends of the rubber spring, the annular groove is located between the connecting portions on both sides, the outer tube, the connecting portion and the annular groove form a buffer chamber, and hydraulic oil is arranged in the buffer chamber; the present invention arranges an annular skeleton at the front and rear ends of the rubber spring, and the outer end of the skeleton is welded and fixed to the inner wall of the outer tube, thereby avoiding axial relative sliding between the rubber spring and the outer tube when the rubber spring is subjected to an axial load, thereby ensuring the buffering effect of the bushing, and at the same time, the annular weld between the skeleton and the outer tube ensures the sealing of the buffer chamber, thereby avoiding leakage of the hydraulic oil in the buffer chamber from between the connecting portion and the outer tube, thereby further ensuring the buffering effect of the bushing.

This utility model belongs to the field of battery technology and discloses an electrode structure, a wound cell, and a battery. The electrode structure includes an electrode body comprising a foil layer and an active material layer disposed on at least one side of the foil layer along its thickness direction. One end of the foil layer along a first direction is flush with the active material layer, and the other end of the foil layer along the first direction extends beyond the active material layer to form a first empty foil portion. The width of the first empty foil portion along a second direction is L1. The first direction is the direction of the central axis of the wound cell formed after the electrode structure is wound, and the second direction is perpendicular to the first direction. The tab body includes a connecting portion and an external portion. The connecting portion is connected to the first empty foil portion, and the external portion is located on the side of the connecting portion away from the first empty foil portion. The width of the external portion along the second direction is L2, where L1 > L2. The electrode structure, wound cell, and battery of this utility model have a simple structure, low production cost, and can also improve the battery's capacity, quality, and safety performance.

The utility model relates to the field of conveyor equipment, in particular to a low-noise carrier roller which comprises a roller shaft, a roller cylinder, a bearing piece and a bearing ring seat, a protective sleeve is installed between the bearing piece and the bearing ring seat in an inserted and sleeved mode, a sealing device is arranged at the outer end of the bearing piece, and the sealing device comprises a first sealing sleeve piece, a second sealing sleeve piece and a sealing ring. A mounting ring groove is formed in the inner wall of the outer end of the second sealing kit, the two sealing rings are symmetrically arranged side by side, the outer ring parts of the two sealing rings are correspondingly inserted into the mounting ring groove, and the two symmetrical outer ends of the inner ring parts of the two sealing rings obliquely extend outwards to form lip edges correspondingly attached to the outer wall of the first sealing kit; an oil storage cavity for externally controlling introduction of lubricating oil is arranged between the sealing device and the bearing part, and a step ring is arranged on the outer wall of the inner end of the protective sleeve, so that a clamping groove communicated with the oil storage cavity is formed between the outer end of the protective sleeve and the bearing ring seat; the low-noise carrier roller can effectively reduce the damage of jumping wear, reduce noise, improve the rotation flexibility and prolong the service life.

The utility model belongs to high altitude welding technical field discloses a device for preventing high altitude welding pipeline spark and foreign matter falling, including the object tray, both ends of the object tray are fixed on the pipeline through the hoop, one side of the object tray is fixed with the baffle for close -fitting pipeline, a plurality of recessed arc grooves are arranged on the baffle, the interval of arc groove is matched with the interval of pipeline, the diameter of arc groove is matched with the diameter of pipeline. The utility model can prevent the falling of spark and other foreign matters, and the safety is greatly improved.

The utility model belongs to blow molding machine technical field, and disclose plastic bottle blow molding machine cooling water channel optimization structure, including blow mold body, the inside of blow mold body is provided with square groove, the inside fixed establishment of blow mold body is equipped with connecting plate, the right side fixed establishment of connecting plate is equipped with spring no.