18results about How to "Improve pullout force" patented technology

The utility model discloses a floor heating pipe staple bolt which comprises a body and a pair of supporting feet, blocking piece barbs are arranged on the outer sides of the supporting feet, and inner side barbs and outer side barbs are arranged at the lower ends of the supporting feet respectively. The inner sides of the supporting legs are further provided with bent arc barbs, and the ends, away from the corresponding supporting legs, of the bent arc barbs are provided with first V-shaped grooves. The utility model has the advantages of novel structure, unique appearance and high identification degree; the drawing force is high, the fixing effect is good, the pipeline is fixed without jumping, and the reworking frequency is reduced; construction is convenient, and working efficiency is improved.

The application provides a kind of chopped fiber reinforced flexible polymer thermal protection material by graphene oxide and aramid nanofiber hybrid modification and its preparation method and use, belongs to the field of advanced materials.Aiming at the problem that the modulus difference between fiber and flexible matrix is huge, the interface compatibility is poor, and the stress concentration is serious, by constructing the hybrid interface phase composed of graphene oxide and aramid nanofiber, the microstructure of the inert surface of the chopped fiber is improved, the multi-scale mechanical interlocking structure between the fiber and the flexible matrix is promoted, the modulus mismatch between the fiber and the rubber matrix is effectively relieved, and the uniform and efficient stress transfer in the interface area is realized.In the process of tensile deformation, dynamic load and high temperature ablation, the hybrid interface phase can keep the close interface bonding between the fiber and the flexible matrix, significantly improve the ablation and erosion resistance of the flexible composite material and the mechanical properties, especially the flexible ablation performance under high dynamic and deformation state, and has good application prospect.

The utility model provides a large pipe diameter pipe clamp support convenient to install, and relates to the technical field of pipe clamp supports, the large pipe diameter pipe clamp support convenient to install comprises a round clamping ring, a pipeline body is arranged in the round clamping ring, a fixing device is arranged between the two ends of the round clamping ring, and the fixing device comprises a buckle. One side of the buckle is fixedly connected with one end of the clamping ring, the section of the buckle in the vertical direction is in a V shape, the other end of the clamping ring is fixedly connected with a clamping block, and a clamping groove is formed in one side of the clamping block. The pipe clamp support can be fixed between the clamping block and the buckle, the two ends of the buckle are easy to install and not prone to separation through the inclined plane guiding mode, the pipe clamp support has the advantages of being low in installation force and high in pull-out force, the structure is extremely reliable, the installation efficiency is high, rapid installation can be achieved only by one person, environmental protection and no pollution are achieved, and the practicability of the pipe clamp support is effectively improved.

The invention relates to a connector limiting plug, a connector assembly and a connector assembly. The connector limiting plug comprises a body and an extension structure. A retaining wall is arranged on the rear side of the body. The extension structure extends from the front side of the body in a direction away from the retaining wall and is configured to be inserted into a first slot of the connector. A gap is arranged between the extension structure and the body. The bottom surface of the extension structure is provided with an abutting part, the abutting part is adjacent to the gap, and the bottom end of the abutting part is lower than the bottom surface of the body. When the male connector is inserted into the second slot of the connector, the abutting part is configured to abut against the male connector to rotate towards the gap and apply elastic pressing force to the male connector. According to the connector limiting plug, the drawing force of the male connector inserted into the second slot can be improved, loosening is avoided, and the contact of the first slot can be prevented from being damaged under the condition that the overall appearance size of the connector is not affected.

This application relates to a bracket assembly, a windshield assembly, and a vehicle. When an optical element is assembled on the bracket body or removed, the limiting member is in a loosened position, and each abutment part and clamping arm is separated from each other. When the fixed shaft is inserted between the two clamping arms, it can push the two clamping arms apart. When the fixed shaft is pulled out of the two clamping arms, it can also push the two clamping arms apart. When the optical element is inserted between the two clamping arms, the limiting member is in a pressed position, and each abutment part abuts against each clamping arm, so that the two clamping arms are tightly abutted against the opposite sides of the fixed shaft. This ensures that the insertion force of the optical element is small and the extraction force is large during the assembly process. In addition, the tension of the retaining spring remains unchanged, and the extraction force between the retaining spring and the fixed shaft is stable over a long period of time. Furthermore, the interference fit between the retaining spring and the fixed shaft can be reduced to reduce the insertion force.

This utility model discloses a nylon-reinforced cement nail mold and cement nail, relating to the field of injection molding technology. The mold includes a lower mold and an upper mold: the lower mold has nail tip positioning holes to fix the nail tip, and the upper mold has a nail head positioning groove on the top. After the mold is closed, an annular cavity and a recessed cavity are formed. Nylon material is synchronously filled through an integrated flow channel, forming a mechanical interlocking structure. The four corner guide pillars and guide sleeves of the mold adopt a conical fit for self-alignment. The ejection mechanism of the lower mold pushes the nail tip through a conical ejector pin. The bottom of the annular cavity and the side wall of the recessed cavity are provided with multi-stage injection channels, with micropores distributed radially and spirally to uniformly fill the material. The pressure plate of the upper mold presses the nail head through hinges and elastic fasteners. The product produced using this utility model has both high strength and impact toughness, effectively improving fastening and seismic performance, solving the problems of easy falling off and insufficient strength of traditional cement nails. It is suitable for the field of building decoration and has the advantages of compact structure and stable performance.

This utility model discloses a rotary toothbrush head and an electric toothbrush, including a drive unit, a brush head, and a housing. The brush head is located on the side of the top of the housing, and the drive unit is located inside the housing and connected to the brush head. The drive unit moves linearly to drive the brush head to rotate. The drive unit includes a connector, a drive rod, and a first elastic member. One end of the first elastic member abuts against the connector, and the other end abuts against the inside of the housing. The brush head includes a brush disc, and the brush disc has a connecting shaft at one end near the drive rod. Through the cooperation of the connector and the first elastic member, the connector maintains contact with the output part on the electric toothbrush handle under the elastic action of the first elastic member. At the same time, when the connector receives the thrust from the output part on the electric toothbrush handle, the elastic force superimposed by the first elastic member can increase the frequency of reciprocating movement of the connector and the force of each movement, allowing the brush disc to output a higher frequency of rotation and a more stable rotational torque.

The utility model discloses a shoot nail, a shoot nail gun, a metal grating fixing system and an electrical grounding system, the shoot nail comprises a screw rod and a nail head, and the nail head comprises a disc spring part, an inverted circular truncated cone part and a cylindrical part in sequence from top to bottom; the heights of the disc spring part, the inverted circular truncated cone part and the cylindrical part are respectively H1, H2 and H3, the disc spring part, the inverted circular truncated cone part and the cylindrical part are respectively provided with three side surfaces C1, C2 and C3, the minimum diameter of the disc spring part is D1, the diameter of the top surface of the inverted circular truncated cone part is D2, the diameter of the bottom surface of the inverted circular truncated cone part is D3, the diameter of the cylindrical part is D4, and the shooting nail is driven into a blind hole of the metal base material through gunpowder. And a first welding area Q1 is formed between the side face C2 of the inverted circular truncated cone part and the inner wall of the blind hole, a second welding area Q2 is formed between the side face C3 of the cylindrical part and the inner wall of the blind hole, and a third welding area Q3 is formed between the end face of the shoot nail and the bottom of the blind hole. According to the novel shoot nail, excellent drawing force is obtained, and meanwhile the good CNC machining characteristic is achieved.

The utility model discloses an oil tank supporting rod heating device which comprises a control electric cabinet (5), a mounting plate and a plurality of heaters (3), and the heaters (3) are detachably arranged on the mounting plate and electrically connected with the control electric cabinet (5). The control electric cabinet (5) is arranged to be capable of controlling heating and temperature control of the heater (3); wherein heating surfaces capable of being matched with the end faces of the oil tank supporting rods (2) are formed on the heaters (3), and a space for containing the oil tank washboard (1) is formed between every two adjacent heaters (3). The oil tank supporting rod heating equipment is convenient to operate and high in working efficiency, the supporting rod can be effectively heated so as to improve the drawing force of the supporting rod, and the overall product quality of an oil tank is stabilized and improved.

This invention discloses a copper wire drawing device with diameter detection function for data cable production, relating to the field of copper wire drawing technology. The copper wire drawing device includes a base, an unwinding component mounted on the base, a winding component mounted on the base away from the unwinding component, a first drive motor and a second drive motor mounted on the base, the output shaft of the first drive motor and the unwinding component being coaxially mounted, the output shaft of the second drive motor and the winding component being coaxially mounted, a plurality of drawing dies evenly distributed on the base, and an installation frame mounted on the base, on which a horizontal diameter gauge and a vertical diameter gauge are mounted. When the first drive motor and the second drive motor are started, after the copper wire is drawn from the last drawing die, the horizontal diameter gauge and the vertical diameter gauge will perform two diameter detections in different directions. By detecting the diameter of the produced copper wire, the drawing quality can be monitored in real time, and the two detections by the horizontal diameter gauge and the vertical diameter gauge can detect whether flat defective products are present.

This invention belongs to the technical field of phase change heat transfer elements, specifically relating to a device and method for removing segmented mandrels. The invention includes a hydraulic motor, a winch, steel wire, a special clamp, a support platform, a baffle, and a worktable. The winch is mounted on the worktable, and the hydraulic motor is connected to the winch via a coupling. Steel wire is wound on the winch, with one end connected to one end of the special clamp, and the other end of the special clamp connected to the segmented mandrel. The upper surface of the support platform has a V-groove, and the workpiece containing the four-segmented mandrel is placed in and fixed within the V-groove of the support platform. A baffle is provided at the end of the support platform near the segmented mandrel. This invention provides a stable and powerful axial pulling force through a hydraulic system, and utilizes a special clamp and a step-by-step blocking mechanism to achieve reliable clamping and sequential, individual pulling of the segmented mandrel, solving the problems of difficult, inefficient, and easily damaged manual removal, thus improving the manufacturing quality and production efficiency of phase change heat transfer elements.

The utility model discloses a wire end connector with good stability and contact. The wire end connector comprises a metal lantern ring, a male end connector and a female end connector which is arranged opposite to the male end connector and is in plugging connection with the male end connector, the male end connector comprises a male end main body and a male terminal arranged in the male end main body, and one end of the metal lantern ring is sleeved on the male terminal; the female-end connector comprises a female-end main body buckled with the male-end main body and a female terminal arranged in the female-end main body, the female terminal is connected with the male terminal in a plugging manner, and the other end of the metal lantern ring is sleeved on the female terminal and is tightly attached to the peripheral edge of the female terminal. According to the utility model, the female seat terminal is clamped by the male head terminal through the arrangement of the metal lantern ring, the contact area of the male end and the female end is increased, the contact impedance can be reduced, and the falling is effectively prevented.

A new type of photovoltaic frame corner code and photovoltaic panel assembly, the corner code comprises: the cross section is L-shaped and has two inner side wall surfaces, namely interference surface wall Ⅱ and interference surface wall Ⅳ, which intersect with each other, interference surface wall Ⅰ and interference surface wall Ⅲ extend in parallel and are separated from interference surface wall Ⅱ and interference surface wall Ⅳ, respectively, to form an interference surface wall for inserting the photovoltaic frame, wherein the corresponding end of interference surface wall Ⅰ and interference surface wall Ⅲ is connected to the base structure at the intersection point. The photovoltaic panel assembly comprises the above-mentioned corner code, a long frame and a short frame in the form of photovoltaic frame respectively spliced with the corresponding slot space of the corner code by using the corresponding inner side frame edge, and the base structure of the corner code is embedded in the inner side space of the long frame and the short frame. In this way, the pulling force between the long and short photovoltaic frames can be strengthened, stronger pulling force can be resisted, and the overall frame stress intensity can be strengthened.

The utility model provides a roof photovoltaic support device with stability, comprising a support main body, the upper end of the support main body is provided with an upper interface used for connecting a photovoltaic assembly, the lower end of the support main body is provided with a lower interface used for connecting a fixing assembly, and the bottom of the support main body is provided with an abutting part horizontally extending outwards; the waterproof coiled material sheet is arranged above the fixing assembly, and a first through hole is formed in the center of the waterproof coiled material sheet; the substrate is nested below the waterproof roll sheet, the substrate comprises a base body part and a limiting part protruding upwards from the base body part, the limiting part is arranged in the first through hole in a penetrating mode, a second through hole is formed in the center of the limiting part, the supporting main body is arranged in the second through hole in a penetrating mode, and the supporting main body is arranged in the second through hole in a penetrating mode. And the abutting part is limited below the limiting part. In this way, the overall connection strength of the supporting device is effectively improved, and the installation stability is enhanced.

The utility model discloses a self-drilling type hollow spiral anchor rod which comprises a nut, a base plate, a connecting sleeve and an anchor rod body, the anchor rod body is of a hollow structure and is provided with external threads, a triangular drilling plate is arranged at the end of the anchor rod body at the foremost end in the drilling direction, and two spiral blades are arranged on a rod body of the anchor rod body and close to the drilling plate. The rotating direction of the spiral blade is the same as that of an external thread of the anchor rod; a first slurry outlet and a second slurry outlet are further formed in a rod body of the anchor rod close to the drilling plate; every two adjacent anchor rods are coaxially connected through a connecting sleeve, the anchor rod at the rearmost end in the drilling direction is sleeved with a base plate, and the end of the anchor rod is in threaded connection with a nut. According to the utility model, drilling is carried out in a manner of not discharging clay, automatic sealing of a hole opening can be realized, high-pressure grouting can be realized, an expanded head structure is formed, meanwhile, clay around a drilled hole is extruded more compactly, the drawing force is further improved, and settlement of a stratum is not caused.

This invention provides a variable-force, self-recovering shape memory alloy wire puller, comprising a pin, a housing with a hollow cavity, a movable pull plate, a shape memory alloy wire, a spring, and a fixed pull plate. The pin, housing, movable pull plate, spring, and fixed pull plate are coaxially arranged. The fixed pull plate is fixed within the hollow cavity of the housing. The movable pull plate is installed within the hollow cavity of the housing and slidably engaged with the housing via the pin. The movable pull plate and the fixed pull plate are axially slidably engaged. The pin is fixedly connected to the movable pull plate. The spring is clamped between the fixed pull plate and the movable pull plate. The shape memory alloy wire is wound between the fixed pull plate and the movable pull plate. The advantages of this invention are: improved puller force; variable wire diameter and winding number of times; automatic recovery after use; and simple assembly.

The application aims to provide a connection structure of a blood flow channel and a sleeve with high bonding reliability, which comprises a blood flow channel and a sleeve. The blood flow channel comprises a round tube, and a connecting tube section is extended from the end of the round tube near one side of the sleeve. The outer wall of the connecting tube section is in a shape of a tapered column with a large middle diameter and small diameters on both sides. The maximum outer diameter of the connecting tube section is smaller than the outer diameter of the round tube, and the sleeve is sleeved on the outer periphery of the connecting tube section and is bonded by glue. The outer wall of the connecting tube section is in a shape of a tapered column with a large middle diameter and small diameters on both sides, which increases the contact area of the sleeve and the connecting tube section and increases the pulling force between them. When the sleeve is stretched and deformed, the contact surface is subjected to normal pressure and glue shear force, and the normal pressure increases with the increase of the deformation amount of the sleeve at this position, which provides a guarantee for the reliable connection between the sleeve and the blood flow channel.

The invention discloses a high-strength and high-durability non-stick wheel emulsified asphalt tack coat oil and a preparation method thereof. The raw material components of the high-strength and high-durability non-stick wheel emulsified asphalt tack coat oil include: 28-32 parts of 0# asphalt, 68-72 parts of 70# asphalt and 78-85 parts of soap solution, wherein the parts are by mass; wherein the soap solution is prepared from an emulsifier, an interface agent and water in a mass ratio of 3:(6-8):(44-46), and the pH value of the soap solution is adjusted to 2±0.2 by hydrochloric acid; the interface agent is an acrylic emulsion; and the preparation method of the emulsifier is as follows: maleic rosin and epoxidized soybean oil are subjected to a ring-opening reaction under the action of a catalyst to obtain an intermediate product, and then the intermediate product is esterified with polyethylene glycol to obtain the emulsifier. The present invention effectively improves the surface state while stabilizing the dispersion by selecting asphalt and combining it with an emulsifier and an interface agent with a specific structure. It also promotes the improvement of strength, stability and durability, and significantly improves the non-stick wheel effect, thereby reducing or avoiding the impact on the road paving quality due to the shedding of the sticky layer oil.