42results about How to "Improve pull-out force" patented technology

A method of manufacturing the insert nut having the rectangular lattice structure, comprises preparing a forged article having a flange and a nut body formed with a serration, which are formed by a forging process; pressing the forged article with a thread rolling die in which a diagonal line inclined at an angle of 15° to 30° with respect to a vertical line to a length direction thereof is formed, and a circular arc is defined by the diagonal line, and a curved die protrusion is provided to have a curvature R so that the vertical line is tangentially contacted with the circular arc, and thus an angle between rectangular lattices is maintained to 50° to 40°; and performing a thread rolling process by pressing-in and rotating the forged article.

The invention discloses a pipe drawing and crimping integrated machine for pipeline connection, comprising a base, at least two guide pillars, a crimping shifting plate, a hydraulic cylinder, a hydraulic shifting lever, a pipe fitting fixing plate, a pipe material fixing piece and a connecting rod, wherein the at least two guide pillars are arranged on the base in parallel; the crimping shifting plate is slidably arranged on the guide pillars and is connected with the hydraulic cylinder through the hydraulic shifting lever; the inner wall of the hydraulic shifting lever is in a shape of slant surface, and the pipe fitting fixing plate is located on one side of the crimping shifting plate; the connecting rod is parallel to the guide pillars, one end of the connecting rod is slidably arranged on the guide pillars, and the other end of the connecting rod is connected with the other side of the crimping shifting plate; and the pipe material fixing piece is arranged on the connecting rod. The invention also discloses a used method of the pipe drawing and crimping integrated machine. The pipe drawing and crimping integrated machine provided by the invention has a reasonable and simple structure and easiness in operation, two functions of pressing an core sleeve of pipe fitting into a pipe product and crimping an outer sleeve of the pipe fitting can be realized at the same time, the mounting difficulty is reduced, the working efficiency is improved, and the application field of pipeline laying is enlarged conveniently.

The invention provides a bow-type drop cable with physical rat-proof function and a manufacturing method of the drop cable. The bow-type drop cable comprises a bow-type cable, an optical fiber and an optical fiber armor, wherein the bow-type cable is provided with a suspension wire reinforcing part, a first reinforcing part and a second reinforcing part which are fixed in an outer sheath through injection molding, V-shaped tearing ports are formed in two sides of the outer sheath and located between the first reinforcing part and the second reinforcing part, the optical fiber is arranged between the V-shaped tearing ports on the two sides, and the periphery of the optical fiber is wrapped with the optical fiber armor. The manufacturing method comprises the steps as follows: molding of the optical fiber with the optical fiber armor and extrusion molding of the outer sheath. The problems of poor physical rat-proof and mechanical performance of the bow-type drop cable are solved, the periphery of the optical fiber is wrapped with a stainless steel pipe, the outer sheath can still have the physical rat-proof function after being bitten, and the tensile property and lateral pressure resistance of the bow-type drop cable are improved.

The invention discloses a sealed type anti-falling single-core wire butt joint mechanical arm. The mechanical arm comprises a terminal body, a lower pressing plate, a first bending pressing block, aninclined plane push block, a guide sheet fixing seat, a U-shaped conductive sheet and two second bending pressing blocks. A lock catch part is arranged on the terminal body, and a sealed cavity is formed by the guide sheet fixing seat and the terminal body; the U-shaped conducting sheet is arranged on a conducting sheet fixing seat; a permanent magnet is embedded in the second bending pressing blocks; the first bending pressing block comprises a pressing block bending part and two first connecting rods; the pressing block bending part is provided with a lower pressing head, and the two first connecting rods penetrate through the terminal body and then are connected to the lower pressing plate; the inclined plane push block comprises a push block body and a second connecting rod, wherein the push block body is provided with a notch, the second connecting rod penetrates through the top of the terminal body and then extends outwards, and the lower pressing plate is provided with a lockinghook. According to the invention, the mechanical arm can greatly improve the reliability of wire connection, effectively prevents the loosening of wire connection, is convenient to use, can avoid corrosive media in the external environment, and improves durability of wire butt joint.

The invention discloses a preparation method of a woven carpet without a gumming process. A second coating layer is a hot-melt fiber-formed filament or a staple fibre yarn, a first coating layer is apolyester fiber filament or a staple fibre yarn, the second coating layer accounts for 20%-50% of the total mass of a composite yarn, the first coating layer accounts for 10%-15% of the total mass ofthe composite yarn, the balance is a core yarn, and a pile weft yarn is obtained by adopting the manner. When the non-adhesive carpet is produced by using a hot-melt copolyester fiber as a bonding material in combination with the pile yarn made of a polyester fiber, the melting occurs when the hot-melt copolyester fiber is heated to be higher than the melting point in a hot pressing process, the conformation of a fiber macromolecular chain is changed, the whole macromolecular chain slips through the transition of chain segments, viscous flow occurs, the pile and weft yarns as well as the weftyarns and warp yarns are effectively solidified after curing, and the pull strength of the pile and the shape retention and dimensional stability of the carpet are enhanced, so that the gumming process in the carpet preparation process is omitted, and the produced carpet is more environmentally friendly.

A self-balancing drilling and pulling-out mechanism with a real-time bit pressure monitoring function comprises a first-stage fixed machine body, a second-stage oil cylinder feeding machine body and a power head supporting plate. The second-stage oil cylinder feeding machine body is arranged on the first-stage fixed machine body through an oil cylinder in a telescopic mode. The second-stage oil cylinder feeding machine body comprises a machine body part located between hollow square steel on the two sides. The upper end of the machine body part is connected to the free end of an oil cylinder telescopic rod in the first-stage fixed machine body through a cross beam. The power head supporting plate is located on the front side of the first-stage fixed machine body, and is connected to the first-stage fixed machine body after an upper self-balancing mechanism and a lower self-balancing mechanism wind around the upper end and the lower end of the second-stage oil cylinder feeding machine body correspondingly. Vertical motion of the power head supporting plate is achieved through vertical movement of the second-stage oil cylinder feeding machine body. Due to the facts that the self-balancing drilling and pulling-out mechanism is simple in structure, convenient to operate and capable of improving the pulling-out force and conducting real-time monitoring, the self-balancing drilling and pulling-out mechanism has practicability and applicability.

The invention relates to a hydraulic rod and a hydraulic tensioner with the hydraulic rod. Compared with a traditional hydraulic rod or hydraulic tensioner, the hydraulic rod and the hydraulic tensioner are characterized in that a connecting piece is additionally arranged between a cylinder body and a shell body of the hydraulic rod, so that the cylinder body is prevented from being separated fromthe shell body, and the separating pulling force of the cylinder body is increased.

The invention provides a battery cell electric connection switching sheet applied to the technical field of lithium batteries. A switching sheet body (1) of the battery cell electric connection switching sheet comprises a body low position part (3) and a body high position part (4), a T-shaped through hole (6) is formed in the body high position part (4), a fastening part (2) is of a T-shaped structure, the fastening part (2) is installed in the T-shaped through hole (6), a thread (7) is arranged in the fastening part (2), body low position part (3) is welded to a battery cell pole (8), and the body high position part (4) is connected with a battery cell connection bar by a bolt (9). According to the battery cell electric connection switching sheet, the connection between the battery cellconnection bar and the battery cell is conveniently and reliably realized, the welding goodness rate of the switching sheet and the battery cell pole is effectively realized, the connection reliability when the bolt is fixedly connected with the battery cell connection bar is realized, the safety and reliability of installation at the connection position are enhanced, the quality is comprehensively improved, and the maintenance cost of a battery cell product with the switching sheet is reduced.

The invention discloses a production method of a woven carpet with no latex. A second covering layer is made with hot-melt fiber filaments or staple yarns; a first covering layer is made with high-density polyethylene fiber filaments or staple yarns; the second covering layer accounts for 20-50% of total mass of composite yarn; the first covering layer accounts for 10-15% of the total mass of thecomposite yarn; the balance is core yarns; pile wefts are therefore produced. During the production of a no-gum carpet with hot-melt low-density polyethylene fiber as an adhesive material, pile yarnsare made in conjunction with nylon fiber or wool; the hot-melt low-density polyethylene fiber melts down when heated to above its melting point in a hot pressing step, and fiber macromolecular chain conformation varies; segmer transition allows the whole macromolecular chain to slide, a viscous flow occurs, piles, wefts and warps are effectively fixed after solidifying, pull-out strength of the piles is enhanced, and shape-maintaining property and dimensional stability are enhanced for the carpet; therefore, the gumming step in the carpet production process is omitted, so that the carpet produced is more environmentally friendly.

The invention discloses a connecting pipe device in the technical field of liquid conveying pipelines. A connecting connector, a plastic pipe, a limiting boss, a connector groove, a seal component anda fixing clamp are included. The limiting boss and the connector groove are formed in the connecting connector, and the seal component is arranged in the connector groove. The fixing clamp is arranged on the outer wall of the plastic pipe. The plastic pipe is connected with the connecting connector, sealed through the seal component and fastened through the limiting boss and the fixing clamp. Theconnecting pipe device is reasonable in design, the vehicle weight is effectively reduced, the whole-vehicle running efficiency is improved, and the pulling disengaging force is greatly increased; and connection of the clamp and the plastic pipe is safe and effective for a long term, and life period safety of the system is greatly improved.

The invention provides a powder metallurgical planetary gear for a high-power starter. The powder metallurgical planetary gear comprises a gear body and a bearing, the gear body is provided with a gear inner hole, the bearing is arranged in the gear inner hole, the end face of the gear body extends to the wall of the gear inner hole through a inclined surface and a cambered surface which are continuous, and the cambered surface projects over the wall of the gear inner hole and is abutted to the edge of the end face of the bearing to stop the bearing from leaving the gear inner hole. The planetary gear solves the problem of insufficient pullout force of a bearing of a planetary gear in the prior art.

The invention discloses a method for manufacturing carbon brush motor rotors. The method comprises the following steps of contour stamping, superposed riveting, coating, commutator assembling, wire wrapping, electric resistance welding, electric resistance welding conducted on commutator feet, punching and tin soldering. By means of the method for manufacturing the carbon brush motor rotors, work efficiency of the tin soldering procedure can be improved, and the good product rate of the tin soldering procedure can be raised.

The invention discloses a preparation method of a woven carpet without a gumming process. A second coating layer is a hot-melt fiber filament or a staple fibre yarn, a first coating layer is a polypropylene fiber filament or a staple fibre yarn, the second coating layer accounts for 20%- 50% of the total mass of a composite yarn, the first coating layer accounts for 10%-15% of the total mass of the composite yarn, the balance is a core yarn, and a pile weft yarn is obtained by adopting the manner. When the non-adhesive carpet is produced by using a hot-melt ethylene-vinyl acetate copolymer fiber as a bonding material in combination with the pile yarn made of a polyester fiber, the melting occurs when the hot-melt ethylene-vinyl acetate copolymer fiber is heated to be higher than the melting point in a hot pressing process, the conformation of a fiber macromolecular chain is changed, the whole macromolecular chain slips through the transition of chain segments, viscous flow occurs, thepile and weft yarns as well as the weft yarns and warp yarns are effectively solidified after curing, and the pull strength of the pile and the shape retention and dimensional stability of the carpetare enhanced, so that the gumming process in the carpet preparation process is omitted, and the produced carpet is more environmentally friendly.

The invention discloses an automobile stabilizer bar device which comprises a stabilizer bar body and a bush assembly installed on the stabilizer bar body, and the bush assembly comprises a clamping body connected to the stabilizer bar body in a sleeving mode; a pre-tightening hoop which is arranged on the tightening body; a bushing body which is arranged on the pre-tightening hoop; and a stabilizer bar fixing clamp which is arranged on the bushing body. The problems that a traditional stabilizer bar bush is abraded, extrusion deformation of the bush is serious, abnormal sound of the bush occurs, limiting is insufficient, and deformation of a fixing clamp is serious are solved. According to the automobile stabilizer bar device, the pre-tightening hoop, the bushing body and the stabilizer bar fixing clamp of the bushing assembly are matched, so that the holding force of the transverse stabilizer bar can be adjusted, and the stabilizer bar bushing has good performance in the aspects of holding force, abrasion resistance, limiting, noise reduction and assembly strength with the stabilizer bar.