30results about How to "Improve mechanical connection strength" patented technology

The invention provides a special junction box for a solar module, which is used for electrical installation of the solar module and can ensure reliable operation of the solar module. The special junction box is characterized in that a fixed ring is added to the box for locking a connecting cable so as to really realize separation of mechanical connection and electrical connection; tables for installing diodes are arranged on the box and a box cover respectively so that the diodes can be directly contacted with the box and the box cover, which shortens the radiating path of the diodes and improves heat dissipation of the diodes; radiating fins are arranged on the box cover, which increases radiating area of the box cover; and steps are arranged at the bottom of the box and are used for limiting relative position between the junction box and a conductor at a lead-out terminal of the solar module so as to further limit installation location.

The invention relates to a three-dimensional braided composite material transmission tower and a preparation method thereof. Various fibers are mixed to form three-dimensional braided fabric, and according to the preparation method of the three-dimensional braided tower, flange connecting pieces and tower composite material structures can be integrally formed in a seamless mode. Rod pieces, on a tower head, a tower body, tower legs and other portions, of different types are transited to preparation of a hybrid fiber braised structure of outer layer carbon fiber three-dimensional fabric through core glass fiber three-dimensional fabric, and carbon fiber zero-degree yarn is adopted at the center of the core glass fiber fabric to serve as a framework. Meanwhile, the rod pieces of the three-dimensional braided composite material tower are connected through flange structures (an embedded metal flange framework) braided by tower rod end integrated hybrid fibers (mixing of carbon fibers and glass fibers), and the tower legs and a shoe plank for connection of a ground-based foundation are of a full carbon fiber three-dimensional braided structure. By means of the method, three-dimensional braided composite material transmission tower parts with composite material flange connection structures can be prepared and are suitable for assembly application of transmission towers of various types.

The invention provides a gap control type metal oxide lightning arrester. The lightning arrester comprises unit sections which are sequentially connected in series in a vertical direction, wherein each unit section comprises an external insulation sleeve and a metal oxide resistance sheet, the metal oxide resistance sheet is arranged in the insulation sleeve, two ends of a bottom unit section of the lightning arrester are connected in parallel with a control unit, the control unit comprises a gap and a controller, the controller is connected with the gap, the controller is used for detecting voltages of two ends of the lightning arrester and simultaneously triggering the gap to be conducted according to the detected voltage values, and the bottom unit section is short-circuited when the gap is conducted. With the lightning arrester provided by the invention, the residual voltage of the lightning arrester can be reduced on the basis of maintaining a performance parameter of the metal oxide resistance sheet for an existing lightning arrester unchanged, and the protection level and the shock-resistant performance of the lightning arrester are improved.

The invention provides a circuit board module and electronic equipment. The circuit board module comprises two circuit boards and a circuit connection board, wherein the two circuit boards are arranged opposite to each other, the circuit connection board is arranged between the two circuit boards and is connected with the two circuit boards, a first engagement structure is arranged on a connectionsurface, connected with each circuit board, on the circuit connection board, a second engagement structure is arranged on a connection surface, connected with the circuit connection board, on the circuit board, and the first engagement structure and the second engagement structure are connected in a matching way when the circuit connection board is connected with the circuit boards. The circuit connection board and the circuit boards can be limited and fixed by connection of the first engagement structure and the second engagement structure in a matching way, the displacement quantity of relative motion between the circuit connection board and the circuit boards is limited, and the mechanical connection strength of the circuit board module is improved.

The invention provides a connector assembly including a first connector and a second connector. The first connector includes a first body equipped with a first terminal. The second connector includes a second body provided with a second terminal. The second terminal is bent to form a holding portion. The first terminal is fixed to the holding portion. The present invention also provides a terminal device comprising the connector assembly. According to the present invention, the first terminal is fixed to the holding portion. In comparison with conventional terminal contact, mechanical connection strength is greater and connection is more stable as contact area is increased. Thus, the connector assembly is not liable to loosen and the stability of electrical connection is guaranteed.

The invention provides a switch control type metal oxide lightning arrester. A high-voltage end of the lightning arrester is connected with a circuit breaker by a power transmission line, a low-voltage end of the lightning arrester is connected with the ground, the circuit breaker is used for performing breaking and closing operation under control of a control system, the lightning arrester comprises unit sections which are sequentially connected in series in a vertical direction, each unit section comprises an external insulation sleeve and a metal oxide resistance sheet, the metal oxide resistance sheet is arranged in the insulation sleeve, two ends of a bottom unit section of the lightning arrester are connected in parallel with a control unit, the control unit comprises a rapid switch and a controller, the controller is connected with the rapid switch, the control system is used for sending a control signal to the controller before sending a closing or breaking command to the circuit breaker, so that the controller triggers the rapid switch to be switched on, and the bottom unit section is short-circuited after the rapid switch is switched on. With the lightning arrester provided by the invention, the residual voltage of the lightning arrester can be reduced on the basis of maintaining a performance parameter of the metal oxide resistance sheet for an existing lightning arrester unchanged, the protection level and the shock-resistant performance of the lightning arrester are improved, the closing resistance of the circuit breaker is omitted, and the cost is reduced.

The invention provides a partition plate for a battery module, the battery module, a battery pack and an electric vehicle. The partition plate comprises at least two blocking pieces, a pressure bearing piece is arranged between every two adjacent blocking pieces, and each pressure bearing piece comprises a body and an insulating layer arranged on the outer wall of the body. On the premise that the current volume utilization rate is not affected, the number of fixing points in the battery module is increased, the mechanical connection strength of the module is improved, the volume of the battery module is increased, meanwhile, the battery module is fixed without relying on glue bonding, and the maintenance problem in a current high-integration battery pack is solved.

The invention provides a force measurement sensor. The force measurement sensor comprises a press head, a base, a sensitive element, a circuit board carrier, a lead fixing circuit board, a multi-functional circuit board, a lead, a conductive post, a conducting wire and a casing, wherein the circuit board carrier is made of a stainless steel material, is plated with copper or gold, and is welded on the sensitive element through laser welding or electronic beam welding, the lead fixing circuit board is directly welded and fixed on the other surface of the circuit board carrier through welding tin or a high-temperature solder, and the lead fixing circuit board is fixedly connected with the multi-functional circuit board through the conductive post. The force measurement sensor can be used for severe work environments, such as super-high or ultralow temperatures, violent impact and violent vibration, and meanwhile, can solve the high-precision force measurement problem of special environments requiring inorganic and organic substances and various bonding structures. The force measurement sensor has extremely actual meaning in solving the high-precision force measurement problem of complicated industrial environments, military equipment and aerospace and navigation environments.

The invention relates to an ultralow-energy-consumption building curtain wall frame profile device and a manufacturing method thereof. The device comprises an inner frame profile (1), a middle fireproof heat-insulation connecting profile (2), a threaded glass fiber rib (3), a fixing connecting block (4) and a fastening nut (5); the inner frame profile (1) is a metal integral component formed by one-time machining, and a mounting connecting notch (11) is formed in the middle of a sunken face; the middle fireproof heat-insulation connecting profile (2) is a glass fiber reinforced polyurethane resin integral component formed by one-time extrusion, the cross section of the middle fireproof heat-insulation connecting profile (2) is square, and the inner end of the middle fireproof heat-insulation connecting profile (2) is inserted into the mounting connecting notch (11); and the threaded glass fiber rib (3) penetrates through the inner frame profile (1) and the middle fireproof heat-insulation connecting profile (2) to conduct fastening, supporting and connecting. The device and the method have the advantages that the fireproof heat-insulation performance is high, the mechanical connection strength is high, the bearing performance is high, the structure is simple and novel, the production and manufacturing process is simple and mature, and the production cost is low.

The invention provides a pipeline necking and crimping machine, a pipeline crimping method and a crimping pipe, which relate to the technical field of crimping equipment. The pipeline necking and crimping machine comprises abuckling and pressing main machine. The buckling and pressing main machine comprises a main machine body and an opposite opening and closing module. The opposite opening and closing module comprises a fixed mold and a movable mold; each of the fixed mold and the movable mold comprises a slot petal mold and a plurality of split petal molds, the slot petal molds are arranged on the opposite side surfaces of the fixed mold and the movable mold, and the slot petal molds on the two sides are matched with each other to form a combined split petal mold; and the split petal mold and the combined split petal mold are drawn close to the circle center of the arc at the same time to form an inner circle surface for clamping a pipeline. The pipeline necking and crimping machine is used in the pipeline crimping method. The crimping pipe is obtained by using the pipeline necking and crimping machine or the pipeline crimping method. By means of the pipeline necking and crimping machine, the technical problems that crimping is not firm and mechanical performance is affected in an existing crimping mode are solved, and the technical effects that crimping is firm and the mechanical performance is improved are achieved.

The invention relates to a comb-tooth grate bar of a comb-tooth sieve plate used for sieving a material. The grate bar consists of a substrate made of a macromolecular elastic material, an abrasion-resistant composite layer, a fixed steel plate vulcanized in the root of the comb-tooth grate bar and the like, wherein the abrasion-resistant composite layer is on the upper part of a comb-tooth part,is adhered to the substrate and is provided with a big end up taper hole; and the hole is filled with a substrate material and is connected with the substrate to form a whole. The abrasion-resistant composite layer is made of ceramics or a hard alloy abrasion-resistant material; the inside of the macromolecular elastic material on the lower part of the abrasion-resistant composite layer is vulcanized with a spring steel wire; and one end of the spring steel wire is 2 to 20 mm away from the edge of the abrasion-resistant grate bar. The lateral surface of the abrasion-resistant composite layer has a big end up obliqueness, and a part of the lower part is coated by the macromolecular elastic material. The comb-tooth sieve plate manufactured by the abrasion-resistant comb-tooth grate bar provided by the invention is good in abrasion resistance and difficult in causing a falling-off problem of the composite layer, so the service life of the sieve plate can be prolonged greatly, and meanwhile a sieve hole of the sieve plate is difficult to be blocked. Thus, the abrasion-resistant grate bar has good popularization and application prospects.

The invention, which belongs to the field of the voltage output type annular shearing type piezoelectric vibration sensor, relates to an annular shearing piezoelectric assembly structure with a built-in amplification circuit, thereby realizing reliable mechanical and electrical connection between a built-in charge amplifying circuit board and the piezoelectric assembly based on the annular shearing type piezoelectric assembly. A pedestal is designed to have a truncated-cone stepped circular ring structure; nested fixed connection between a stepped circular ring structure of a mass block and the built-in charge amplifying circuit board is realized by connection and fixation between internal and external cylindrical electrode surfaces of a piezoelectric element and the mass block; and for signal transmission, lead-free connection is realized by the electrode plane of the built-in charge amplifying circuit board. According to the invention, with the annular shearing piezoelectric assembly structure, engineering application problems of low shear structure strength, poor vibration stability, and poor lead reliability and the like are solved; the resonance frequency, reliability, structural strength of the mechanical structure are enhanced; the frequency response range of the piezoelectric assembly is extended; the anti-large-order non-destructive capability is improved; and large-order or resonance-band relative displacement of the built-in charge amplifying circuit board and the mass block as well as lead swinging at a low-order harmonic frequency point is eliminated.

The invention discloses a non-contact rotary potentiometer based on the principle of light refraction, which includes a casing, a rotating shaft, a refracting lens, a light source, a photosensitive device and a circuit board. The refracting lens is connected to the rotating shaft and can be driven by the rotating shaft to rotate around its own central axis. The photosensitive device is connected to the circuit board correspondingly. The light source and the photosensitive device are respectively located on both axial sides of the refracting lens and the following conditions are met: the outgoing light of the light source can be projected on the photosensitive end of the photosensitive device after being refracted by the refracting lens, and the refracting lens rotates The position of the light emitted from the light source being refracted and projected on the photosensitive end of the photosensitive device is different. The invention realizes the non-contact angular displacement detection function, is not affected by the contact resistance of the contact parts, etc., improves the detection accuracy, and improves the service life of the product; by improving the mechanical connection strength, the anti-vibration ability can be improved, and it can adapt to strong vibration Environment; since it is not affected by magnetism, it is suitable for strong magnetic environments.

A split-type transmission electron microscope sample rod, including a shaft and a functional head, a plug is arranged at the center of the casing of the shaft, a socket matching the plug is arranged at the center of the functional head, and the socket and the casing of the shaft The space between the plug and the shell of the functional head is filled with vacuum seals, and the plug and the socket are inserted to realize the docking of the shaft and the functional head. The end of the shell where the functional head is connected to the shaft is provided with a connector. The connecting head is inserted into the shaft shell, and a positioning pin is provided at the end of the connecting head, and a positioning groove is provided at a corresponding position in the shell of the shaft. The body and the functional head are provided with external threads on the plug-in end, and a sleeve is placed on the outer sleeve of the functional head, and an internal thread that is compatible with the external threads of the shaft and the functional head is arranged in the sleeve; the functional head of the sample rod of the present invention is detachable. It solves the problems of single function of ordinary sample rod, high transportation cost and risk, and difficult sample transfer.

The invention provides a rural management machine. The rural management machine solves the problem in the prior art that the rural management machine has high labor intensity and low working efficiency. The rural management machine comprises a machine body; an engine and a hydraulic continuously variable transmission driven by the engine are arranged on the machine body; the hydraulic continuouslyvariable transmission is directly connected with a walking gearbox; a walking crawler belt driven by the walking gearbox is arranged on the machine body; an aricultural implement is detachable arranged on the back part of the machine body through a lift oil cylinder; the agricultural implement is connected with the engine through a back output gearbox, and the engine is used for driving the agricultural implement to work; a wireless receiver is arranged on the machine body; and the wireless receiver is used for receiving an instruction transmitted by a remote controller and is used for controlling the engine, the walking gearbox and the lift oil cylinder to act. The rural management machine provided by the invention is simple in structure and convenient to operate; a user only needs to perform remote control and can operate without sitting on the machine body; and the operation comfortability is greatly improved and the labor intensity is reduced.

The invention provides a rotation locking mechanism and a plant protection UAV having the same, wherein the rotation locking mechanism includes a locking lifting lug provided on the main body of the frame and a rotation connecting piece provided on the pivot end of the swing arm; the lock The outer edge of the locking lug includes an arc segment and a straight segment. The rotating connector is provided with a flange that is in close contact with the outer edge of the locking lug. The flange cooperates with the straight segment of the outer edge to limit the swing arm. Rotate in the unfolding direction; the rotating connector is provided with a lock hook, and an elastic member is provided between the lock hook and the rotating connector for exerting stress that drives the hook portion of the lock hook toward the swing arm; the locking lug is provided with The locking part matched with the locking hook is used to restrict the rotation of the swing arm around the pivot end when the locking hook and the locking part are matched, so as to solve the technical problems of complicated assembly process and limited application range of existing plant protection drones.

The invention discloses a non-contact rotary potentiometer based on a light refraction principle. The non-contact rotary potentiometer based on the light refraction principle comprises a shell, a rotating shaft, a refraction lens, a light source, a photosensitive device and a circuit board; the refraction lens is connected with the rotating shaft and can be driven by the rotating shaft to rotate around the center axis of the refraction lens, and the photosensitive device is correspondingly connected with the circuit board; the light source and the photosensitive device are located on the two axial sides of the refraction lens respectively and meet the following conditions that emergent light of the light source can be projected to the photosensitive end of the photosensitive device after being refracted by the refraction lens, and the positions of the refracted emergent light projected to the photosensitive end of the photosensitive device of the light sourcein the rotation process of the refraction lens are different. The non-contact angular displacement detection function is achieved, the non-contact rotary potentiometer is not affected by contact resistance of a contact component and the like, the detection precision is improved, and the service life of a product is prolonged; the anti-vibration capability can be improved by improving the mechanical connection strength, and the non-contact rotary potentiometer can adapt to a strong vibration environment; the non-contact rotary potentiometer is not influenced by magnetic force, so that the non-contact rotary potentiometer is suitable for strong-magnetic environments.

A wire crimp-on terminal (14) comprising a crimp-on terminal main body made of an electrically conductive material and a wing section (108) extending from two opposite sides of a rear-section of the crimp-on terminal main body, for use in crimping a wire onto the rear-section of the main body. The crimp-on terminal main body comprises a crimp-on terminal first layer (102) and a crimp-on terminal second layer (103). The crimp-on terminal first layer (102) and the crimp-on terminal second layer (103) are fittingly arranged. The wing section (108) is provided with a front end (108a) and a rear end (108b). The crimp-on terminal first layer (102) and the crimp-on terminal second layer (103) start to extent overlappingly forwards from at least the front end (108a) of the wing section. The crimp-on terminal solves the problem of excessive heat being generated at the front-section of the crimp-on terminal main body when electricity is applied, and enhances the strength of a mechanical connection between a wire crimp-on area and a transition area of the crimp-on terminal.

The invention discloses a welding-free and paint-free color steel door body, a door frame and an assembled metal door. The door body is located in the door frame and matched with the same, the door body and the door frame are both formed by bending paint-free color steel plates, and a first door plank and a second door plank of the door body and an upper beam and a door stand column of the door frame are mechanically connected through an embedding device formed at a time, welding is not needed, and the problems of environment pollution and the like caused by welding can be avoided; product attractiveness is high and the market competitiveness is high; and the connecting strength of the adopted embedding device is high, the machining process is convenient, and the application of the color steel plate to the field of metal door manufacturing is realized in a breakthrough manner.

The invention relates to a node connection device of a composite pole tower and a manufacturing technology. The node connection device comprises a node connection component (1), wherein the node connection component (1) is arranged at the node connection end of a composite pole tower profile and comprises a bonding connection block (11) and a bolting connection block (12), a bonding groove (13) isformed in the connecting surface of the bonding connection block (11), the connecting surface of the bonding groove (13) makes contact with the surface of the composite pole tower profile, the bonding groove (13) is filled with a polyurethane structural adhesive, a fixed connection hole (14) is formed in the connecting surface of the bonding connection block (11), a connecting bolt is arranged inthe fixed connection hole (14), and the bonding connection block (11) is fixedly connected with the composite pole tower profile through the connecting bolt. The node connection device is simple andnovel in structure, convenient and fast to mount and high in connecting strength, the manufacturing process is simple and mature, the production cost is low, and the production efficiency is high.

The invention discloses a cylindrical oil tank structure transformer. The cylindrical oil tank structure transformer comprises a transformer body, clamping pieces arranged on the two sides of the transformer body, and a tank cover; first connecting pieces extending downwards are arranged on the tank cover, second connecting pieces extending upwards are arranged on the clamping pieces, and the first connecting pieces and the second connecting pieces are fixed through transverse connecting bolts. Compared with the prior art, the cylindrical oil tank structure transformer has the advantages thatthe mechanical connection strength is improved; assembly errors caused by various production links to general assembly are reduced; for double-grounding transformers, the risk of multi-point groundingis lowered.

The invention provides a switch control type metal oxide lightning arrester. A high-voltage end of the lightning arrester is connected with a circuit breaker by a power transmission line, a low-voltage end of the lightning arrester is connected with the ground, the circuit breaker is used for performing breaking and closing operation under control of a control system, the lightning arrester comprises unit sections which are sequentially connected in series in a vertical direction, each unit section comprises an external insulation sleeve and a metal oxide resistance sheet, the metal oxide resistance sheet is arranged in the insulation sleeve, two ends of a bottom unit section of the lightning arrester are connected in parallel with a control unit, the control unit comprises a rapid switch and a controller, the controller is connected with the rapid switch, the control system is used for sending a control signal to the controller before sending a closing or breaking command to the circuit breaker, so that the controller triggers the rapid switch to be switched on, and the bottom unit section is short-circuited after the rapid switch is switched on. With the lightning arrester provided by the invention, the residual voltage of the lightning arrester can be reduced on the basis of maintaining a performance parameter of the metal oxide resistance sheet for an existing lightning arrester unchanged, the protection level and the shock-resistant performance of the lightning arrester are improved, the closing resistance of the circuit breaker is omitted, and the cost is reduced.