41results about How to "Increased connection contact area" patented technology

The invention provides a fixture device for machining a lower wire outlet base of a solid-sealed polar pole on a general machine tool. The fixture device comprises a base plate; a front plate is vertically arranged at one end of the upper end face of the base plate; a front jacking component for horizontally and axially jacking the lower wire outlet base is arranged on the front plate; a rear plate is vertically arranged at the other end of the upper end face of the base plate; a cushion block is arranged at the inner side of the rear plate; a left supporting plate and a right supporting plate are respectively arranged at the two sides of the middle part of the upper end face of the base plate; an upper positioning plate is supported on the upper end faces of the left and right supporting plates; a tapered iron pressing component for vertically and radially pressing the lower wire outlet base is arranged on the base plate between the left and right supporting plates; the front jacking component moves forwards to axially push one end face of the lower wire outlet base so that the other end face of the lower wire outlet base is tightly pressed on the cushion block in order to realize axial positioning; the tapered iron pressing component moves via a bevel so that the lower wire outlet base can be lifted in the radial direction and the upper plane of the lower wire outlet base is horizontally close to the lower plane of the upper positioning plate in order to realize radial positioning. The fixture device disclosed by the invention is capable of guaranteeing the precision of a lower wire outlet base product machined by a general machine tool so that the electric conductivity of a resistance loop of the solid-sealed polar pole is good, the potential safety hazards are reduced, and the manufacturing cost and machining cost can be greatly lowered.

The invention discloses a framework structure of a nuclear medicine detector module set and belongs to the technical field of nuclear medicine imaging. The framework structure is used for fixation ofa nuclear medicine detector and an annular support plate and comprises a liquid cooling plate for an installation of a detector, a first fixing plate and a second fixing plate both fixed on two ends of the liquid cold plate and oppositely arranged, a cross beam connecting the first fixing plate and the second fixing plate, wherein the liquid cold plate, the first fixing plate, the second fixing plate and the cross beam are enclosed to form rectangular space accommodating the detector; and opposite surfaces of the first fixing plate and the second fixing plate are fixed on the annular support plate. Powerful support is provided for the detector getting far away from the annular support plate; connection stability of the framework structure and the detector module set can be enhanced; radialoffset of the detector getting far away from the annular support plate can be reduced; installation precision of the detector can be improved; and imaging quality can be increased.

The invention discloses a metal bearing cleaning method. The metal bearing cleaning method comprises the following steps that (a) a cleaning frame is assembled; (b) installation is carried out in place; (c) preliminary cleaning is carried out; (d) secondary cleaning is carried out; (e) deep cleaning is carried out; (f) drying is carried out; and (g) storage is carried out. The metal bearing cleaning method has the advantages of being simple in operation, easy to control, large in cleaning amount, good in cleaning effect, comprehensive, thorough and high cleaning quality, improves cleaning efficiency, and being capable of achieving phased cleaning,.

The invention discloses a clamping and fastening structure for HVAC shells of an automobile air conditioner. The clamping and fastening structure comprises the first shell (1) and the second shell (2), grooves (21) are formed in the periphery of an opening of the second shell (2), and pins (13) are arranged on the periphery of an opening of the first shell (1) and matched with the grooves (21); a clamping groove (11) is formed in the opening of the first shell (1), a tongue piece (22) matched with the clamping groove (11) is arranged on the opening of the second shell (2), and the tongue piece (22) is in interference fit with the clamping groove (11). Firm connection is achieved through interference fit, the clamping and fastening structure has the function of a tongue-groove fastener and the function of a clamping fastener, and sealing connection is firm and reliable; as an unlocking mechanism is arranged, the two shells can be disassembled conveniently.

The invention discloses a mouth opening and shaping device for stomatology department examination. The device comprises an arc-shaped supporting plate, occlusion pieces, an adjusting column, a transverse plate and a collecting bag, connecting ropes are arranged on the two sides of the bottom of the arc-shaped supporting plate, the bottoms of the connecting ropes are connected with an arc-shaped cushion plate, the bottom of the arc-shaped cushion and the top of the arc-shaped supporting plate are provided with the arc-shaped occlusion pieces, the adjusting column is arranged on the surface of the top of the arc-shaped cushion, two symmetrically-arranged lighting columns are arranged on the surface of the top of the arc-shaped cushion, the inclined transverse plate is arranged on the front face of the arc-shaped cushion, a conveying pipe is arranged on the surface of the transverse plate, one end of the conveying pipe penetrates through the interior of the arc-shaped cushion, an L-shaped support is arranged at the bottom of the transverse plate, and the collecting bag is arranged at the top of the L-shaped support. According to the device, by arranging the adjusting column, the mouth opening height and opening area can be adjusted when a patient is subjected to mouth examination, and medical staff in the stomatology department can conveniently conduct examination.

The invention discloses an HVAC (Heating Ventilation Air Conditioning) shell clamping and fastening structure for an automobile air conditioner. The HVAC shell clamping and fastening structure for the automobile air conditioner comprises a first shell (1) and a second shell (2) which are connected with each other; a groove (21) is formed in the periphery of an opening of the second shell (2); a plug pin (13) is arranged on the periphery of an opening of the first shell (1); the plug pin (13) is matched with the groove (21); a clamping groove (11) is also formed in the position of the opening of the first shell (1); a tongue piece (22) which is matched with the clamping groove (11) is arranged at the position of the opening of the second shell (22); the tongue piece (22) is in interference fit with the clamping groove (11). Firm connection is realized by the interference fit, so that the HVAC shell clamping and fastening structure has a function of a tongue-groove-type fastening piece and a function of a clamping fastening piece, and can be connected firmly and reliably in a sealing manner.

The invention provides an electrochemistry energy storing device, comprising a top cover, a coiling type naked battery cell and two conductive switchover sheets with opposite electric polarities. The top cover is equipped with terminal posts with the opposite electric polarities. The coiling type naked battery cell is equipped with tabs with the opposite electric polarities. The two conductive switchover sheets with the opposite electric polarities are electrically connected with the terminal posts of the top cover with the opposite electric polarities and the tabs of the naked battery cell with the opposite electric polarities. Each conductive switchover sheet is equipped with a top cover side connecting part which is electrically connected with the terminal post on the top cover with the corresponding electric polarity; and a tab side connecting part which stretches from the top cover side connecting part to a direction away from the top cover. A lug boss which projects from the internal surface of the tab side connecting part to the coiling type naked battery cell of the electrochemistry energy storing device, is inserted into an internal space formed by the tab of the coiling type naked battery cell with the corresponding electric polarity, contacts the tab with the corresponding electric polarity and is electrically connected with the tab with the corresponding electric polarity, is formed on the each tab side connecting part. According to the electrochemistry energy storing device, a utilization rate of the internal space is high and the volume energy density is high.

The invention discloses a round wire L-shaped locking connector and a connection method thereof. The round wire L-shaped locking connector comprises an electrically conductive connecting body, an input locking nut and an output locking nut; two ends of the connecting body are respectively provided with an input screw portion and an output screw portion which are perpendicular to each other; an input locking tube and an output locking tube are arranged on ends of the input screw portion and the output screw portion respectively; an input locking cone section and an output locking cone section are arranged in inner holes formed in outer ends of the input locking nut and the output locking nut; U-shaped openings are formed in the input locking tube and the output locking tube; the input locking nut and the output locking nut are connected to the input screw portion and the output screw portion respectively; and the input locking cone section and the output locking cone section are pressedon the input locking tube and the output locking tube respectively. The invention can quickly and vertically connect two round wires, can achieve reversing connection, can reduce the resistance, canprevent gaps, loosening and oxidation of a joint conductor contact surface after the hot and cold cycle of the connector, and can improve the connection reliability of the joint.

The invention discloses an assembly platform for furniture product production and an operation method. The assembly platform comprises a mounting bottom plate, seat plates, a conveying plate, a slope plate and waste collection boxes, wherein the top of the mounting bottom plate is provided with two groups of seat plates, two groups of storage cabinets, and supporting columns; a working platform is welded to the tops of the supporting columns; the conveying plate is mounted at the top of the working platform and perpendicularly intersects with the working platform; the slope plate is attached to the back face of the conveying plate; the two sets of waste collecting boxes are slidably mounted on the surface of the top of the mounting bottom plate through limiting sliding grooves; and the waste collecting boxes are located below the working platform, and two sets of cylinders are welded to the front face of the working platform. By arranging the working platform and the conveying plate, double-assembly-line operation support is provided for a device, so that the assembling and machining speed of the device is higher than the conveying speed of the conveying plate, and stacking of furniture is avoided.

The invention discloses a three-in and one-out phase-change switch, and relates to the technical field of phase-change switches. The three-in and one-out phase-change switch comprises a switch assembly and a wiring terminal strip, wherein the wiring terminal strip is provided with four binding posts and wiring mechanisms, the wiring mechanisms are electrically connected with the binding posts in a one-to-one correspondence manner, the input end of the switch assembly is electrically connected with the binding posts, the wiring mechanism comprises a wiring connecting base and a wiring adjusting rod, and the wiring adjusting rod is used for driving the wiring connecting base to conduct winding and fixed connection on a connecting conducting wire. According to the invention, the wiring mechanism on the wiring terminal strip is arranged to be of a combined structure with the wiring connecting base and the wiring adjusting rod, and when the connecting conducting wire is connected, the wiring adjusting rod drives the wiring connecting base to conduct winding type fixed connection on the connecting conducting wire, so that compared with an existing mode that fixing is conducted through screw fastening, the conducting wire connection contact area is obviously increased, the connection stability is improved, and the problem of poor contact is prevented.

The invention relates to the field of municipal engineering facilities, in particular to a pipeline connecting structure for municipal water supply and drainage. The pipeline connecting structure comprises a first connecting seat fixedly connected to a first pipeline and a second connecting seat fixedly connected to a second pipeline; a first insertion pipe communicating with the first pipeline is fixedly connected to the first connecting seat; a second insertion pipe communicating with the second pipeline is fixedly connected to the second connecting seat; an annular insertion groove is formed in the end face of a pipe opening of the first insertion pipe, and the second insertion pipe is in sliding inserted connection with the annular insertion groove; the second insertion pipe is provided with a filling device for filling a gap between the second insertion pipe and the inner groove wall of the annular insertion groove; and the first connecting seat and the second connecting seat are provided with fixing devices used for connecting and fixing the first connecting seat and the second connecting seat. The pipeline connecting structure has the effects that the pipeline repair and maintenance frequency caused by bolt corrosion can be reduced, and manpower and energy consumption is reduced.

A movable elevator comprises a nested frame adopting a three-side surrounding structure, wherein bolt holes are formed in the positions of an opening of the nested frame, and a horizontal lifting lug and a vertical lifting lug are arranged on the outer sides of two connected side frames of the nested frame respectively. With adoption of the structure, the nested frame is clamped with a bracket and locked by a bolt through the bolt holes; hoisting and turning work of the bracket can be well completed by means of the horizontal lifting lug and the vertical lifting lug.

The invention discloses a pull basket for an integrated cooker and a mounting method of the pull basket. The pull basket comprises a bowl basket and mounting guide tracks, wherein the bowl basket is internally provided with dish holders, containing boxes and bowl holding plates respectively; a water collection box is connected with the bottom of the bowl basket. The mounting method of the pull basket comprises the following steps: (a) assembling the bowl basket; (b) mounting the water collection box; (c) mounting containing components in place; (d) mounting the pull basket into a cabinet. Thepull basket disclosed by the invention is compact in structure, flexible to assemble and disassemble and convenient to clean, tableware can be classified and stored, thus being tidy and sequential andclean and sanitary, the mounting method is simple to operate and reasonable and sequential, the mounting difficulty is reduced, easiness in control and adjustment is achieved, good flexibility and labor saving and convenience can be achieved, and thus mounting quality can be ensured.

The invention provides a construction method of an assembling-type load-bearing steel structure factory building framework. The construction method includes the steps that a wall body frame is erected, open web roofing composite beam frames are prepared, a diagonal line of the wall body frame is selected as an assembling guide line, and the open web roofing composite beam frames are hoisted in sequence. According to the technical scheme, structural parts which make up a large-scale factory building are divided into a plurality of structural parts, the structural parts are prepared in advance and then assembled and constructed, the construction process is greatly simplified, the construction efficiency is improved, connecting structural parts such as connecting clamping plates and connecting lug plates are additionally arranged to increase connecting contact areas of every two adjacent structural parts at the joint, overall structural strength and bearing capacity of a steel structure wall body are greatly enhanced, when the open web roofing composite beam frames are laid and installed, laying and installation are carried out in sequence according to the assembling guide line, assembling precision is ensured, a hoisting vehicle only needs to travel along the corresponding path once without reciprocating movement, the construction period is shortened, and the construction qualityof the factory building is ensured.

The invention provides an IGTO encapsulation structure comprising a GTO device and a driving circuit board. The GTO device includes an insulating shell, and the middle of the top of the insulating shell is the anode of the GTO device and also the anode of an IGTO device. The outer side face of the GTO device is provided with two annular structures which are spaced from each other up and down, wherein the upper annular structure is a gate ring of the GTO device, and the lower annular structure is a cathode ring of the GTO device. The cathode ring of the GTO device is discontinuous, and has at least one gap. Part of the cathode ring of the GTO device is clamped into a mounting hole of the driving circuit board through the gaps first, and then the GTO device is clamped into the mounting hole of the driving circuit board through rotation. The cathode ring and the gate ring of the GTO device are respectively disposed on the back and front of the driving circuit board, and the gate ring and the cathode ring of the GTO device are respectively in close contact and electrically connected with first electrical connection areas on the front and back of the driving circuit board. The IGTO encapsulation structure has small lead inductance and good cooling performance, and is convenient to crimp and use.

The invention discloses a round wire multi-branch locking connector and a connection method thereof. The round wire multi-branch locking connector comprises an electrically conductive connecting body,an input locking nut and output locking nuts; the connecting body are provided with an input screw portion and a plurality of output screw portions; an input locking tube and an output locking tube are arranged on ends of the input screw portion and each output screw portion respectively; an input locking cone section and output locking cone sections are arranged in inner holes formed in outer ends of the input locking nut and the output locking nuts; U-shaped openings are formed in the input locking tube and the output locking tubes; the input locking nut and the output locking nuts are connected to the input screw portion and the output screw portions respectively; and the input locking cone section and the output locking cone sections are pressed on the input locking tube and the output locking tubes respectively. The invention can quickly and vertically connect multi-branch round wires, can reduce the contact resistance, can prevent gaps, loosening and oxidation of a joint conductor contact surface after the hot and cold cycle of the connector, and can improve the connection reliability of the joint.

The invention provides a high-capacity battery structure, and belongs to the technical field of energy storage batteries, the high-capacity battery structure comprises a plurality of high-capacity battery units connected in series, each high-capacity battery unit comprises a battery cylinder, a positive electrode cover plate arranged at an opening in one side of the battery cylinder and a negative electrode cover plate arranged at an opening in the other side of the battery cylinder, the positive electrode cover plate is a positive electrode column, and the negative electrode cover plate is a negative electrode column. The positive electrode cover plate is a positive electrode column, the negative electrode cover plate is a negative electrode column, a positive electrode connecting strip is arranged on one side, far away from the inner cavity of the battery barrel, of the positive electrode cover plate, and a negative electrode connecting strip is arranged on one side, far away from the inner cavity of the battery barrel, of the negative electrode cover plate. And the positive electrode connecting strips corresponding to the positive electrode cover plates and the negative electrode connecting strips corresponding to the negative electrode cover plates of two adjacent battery cylinders are electrically connected. The positive pole and the positive cover plate are integrated, and the negative pole and the negative cover plate are integrated, so that the positive pole and the negative pole are omitted, materials are saved, and the cost is reduced.

The invention discloses a shaft connection structure. The shaft connection structure comprises a connecting shaft, wherein the connecting shaft is hollow, and two ends of the connecting shaft are in communication; the input end of the connecting shaft is detachably and fixedly connected with a turbine disk of a turbine component through a fixed connecting piece, so that relative motion between theconnecting shaft and the turbine disk is avoided; a limiting step which is protruded facing the center of a shaft hole is arranged in the shaft hole of the output end of the connecting shaft; the output end of the connecting shaft is connected with a gas compressor rear shaft journal of the gas compressor component through an internal and external spline structure; an axial limiting member is fixedly mounted in the shaft hole of the gas compressor rear shaft journal, and is used for propping the limiting step to enable the connecting shaft to be in rigidity connection with the gas compressorrear shaft journal, then the power transmitted by the turbine disk to the connecting shaft is smoothly transmitted to the gas compressor rear shaft journal, and besides, the axial limiting member andthe propping limiting step are also used for preventing the connecting shaft to slide towards the turbine disk in the axial direction. According to the shaft connection structure disclosed by the invention, the power can be smoothly transmitted to the gas compressor rear shaft journal by the connecting shaft, and the power transferring quality is good.

The invention discloses a method for hoisting a low-clearance super-long reinforcement cage into a hole section by section under a high-voltage line. The method comprises the following steps of (a) cleaning a site; (b) assembling a reinforcement cage; (c) butting two sections of reinforcement cages; (d) positioning; and (e) hoisting section by section. The method for hoisting the reinforcement cage into the hole in a segmented mode is adopted, pile holes of different depths can be flexibly adapted, the enough reinforcement cage burying depth is guaranteed, the problem that construction is not allowed within the vertical distance range of 6 m of the high-voltage line is solved, the construction operation of hoisting the long reinforcement cage into the hole at the limited height is achieved, the hoisting weight of the single-section reinforcement cage is more effectively controlled, the accident of hoisting instability of the whole-section reinforcement cage is avoided, and the safety of constructors and equipment is guaranteed.

The invention discloses a manufacturing method of a printed circuit board for a signal generator, and the method comprises the following steps: manufacturing an inner-layer circuit on a core board, wherein a plurality of continuously bent U-shaped earthworm wires are inclined in the inner-layer circuit manufactured on one surface of the core board; pressing the core board and outer-layer copper foil into a production board through a prepreg; drilling holes at the positions, corresponding to the end parts of the earthworm lines, of the production board; metalizing the holes through copper deposition and full-board electroplating; and sequentially manufacturing an outer-layer circuit, manufacturing a solder mask layer, and carrying out surface treatment and forming on the production board toobtain the printed circuit board. The printed circuit board manufactured by the method provided by the invention can effectively reduce the loss of line signals and ensure the transmitting and receiving conversion efficiency of an antenna.

The invention discloses a shaft connection structure. The shaft connection structure comprises a connecting shaft, wherein the connecting shaft is hollow, and two ends of the connecting shaft are in communication; the input end of the connecting shaft is detachably and fixedly connected with a turbine disk of a turbine component through a fixed connecting piece, so that relative motion between theconnecting shaft and the turbine disk is avoided; a limiting step which is protruded facing the center of a shaft hole is arranged in the shaft hole of the output end of the connecting shaft; the output end of the connecting shaft is connected with a gas compressor rear shaft journal of the gas compressor component through an internal and external spline structure; an axial limiting member is fixedly mounted in the shaft hole of the gas compressor rear shaft journal, and is used for propping the limiting step to enable the connecting shaft to be in rigidity connection with the gas compressorrear shaft journal, then the power transmitted by the turbine disk to the connecting shaft is smoothly transmitted to the gas compressor rear shaft journal, and besides, the axial limiting member andthe propping limiting step are also used for preventing the connecting shaft to slide towards the turbine disk in the axial direction. According to the shaft connection structure disclosed by the invention, the power can be smoothly transmitted to the gas compressor rear shaft journal by the connecting shaft, and the power transferring quality is good.

The invention provides an imbricated assembly and a production method of the imbricated assembly, and relates to the technical field of solar photovoltaics. The imbricated assembly comprises a cover plate, a front packaging material, a plurality of battery strings which are arranged in a tiled manner, a back packaging material and a back plate which are arranged in a laminated manner; the battery string is formed by overlapping a plurality of battery pieces; the battery piece comprises a first side line and a second side line which are oppositely distributed; the first side line is a straight line, the second side line comprises a wavy line, and the included angle between the second side line and the adjacent side line is larger than or equal to 90 degrees. In two adjacent battery pieces in the battery string, the end where the second side line of one battery piece is located is overlapped with the end where the first side line of the other battery piece is located. The edge of the overlapping area basically does not have an acute angle, and the edge of the overlapping area is not easy to have subfissure. The end where the first side line of the straight line side is located overlaps the end where the second side line of the wavy line is located, and the reliability of the assembly is improved.

The invention provides an IGTO packaging structure, including a GTO device and a drive circuit board. The GTO device includes an insulating case, and the anode of the GTO device is also used as the anode of the IGTO device in the middle of the top of the insulating case; There are two annular structures spaced up and down on the outer surface, the upper annular structure is the gate electrode ring of the GTO device, and the lower annular structure is the cathode ring of the GTO device; the cathode ring of the GTO device is discontinuous and has at least one gap; Part of the cathode ring of the GTO device is inserted into the mounting hole on the drive circuit board through the gap, and then rotated so that the GTO device is inserted into the mounting hole of the drive circuit board, and the cathode ring and gate ring of the GTO device are respectively located on the drive circuit board. On the reverse side and the front side of the board, the gate electrode ring and the cathode ring of the GTO device are respectively closely contacted and electrically connected to the first electrical connection areas on the front and back sides of the drive circuit board. The lead wire of the invention has small inductance, good heat dissipation performance, and is convenient for crimping and use.

The invention provides a conductive ceramic heater and an electronic atomization device. The conductive ceramic heater comprises a conductive assembly and a supporting piece, wherein the conductive assembly comprises a conductive ceramic substrate, a positive electrode and a negative electrode, and the positive electrode and the negative electrode are both connected with the conductive ceramic substrate; the supporting piece is connected with the conductive ceramic substrate, a contact area is formed at the contact position of the supporting piece and the conductive ceramic substrate, and thelength of the contact area in the extending direction parallel to the conductive ceramic substrate is larger than zero. The length of the contact area in the direction parallel to the extension direction of the conductive ceramic substrate is greater than 0, so the connection contact area of the support piece and the conductive ceramic substrate is increased in the direction parallel to the conductive ceramic substrate, the mechanical strength of the conductive ceramic substrate is improved, fracture resistance of the conductive ceramic substrate is improved, and the service life of the conductive ceramic substrate is prolonged; and the service life of the conductive ceramic substrate is prolonged, so the service life of the conductive ceramic heater is prolonged.

The present application relates to a pipe connection structure for municipal water supply and drainage, relating to the field of municipal engineering facilities, which includes a first connection seat fixedly connected to the first pipe, a second connection seat fixedly connected to the second pipe, and the first connection seat The upper part is fixedly connected with the first connecting pipe connected with the first pipe, and the second connecting seat is fixedly connected with the second connecting pipe connected with the second connecting pipe. The ring-shaped socket slot is slidably inserted, and the socket-connecting pipe 2 is provided with a filling device for filling the gap between the socket-connecting pipe 2 and the inner groove wall of the ring-shaped socket. A fixing device for connecting and fixing the first connecting base and the second connecting base. The application has the effects of improving the maintenance frequency of pipelines caused by bolt corrosion and reducing the consumption of manpower and energy.

The present application relates to a protective door, which includes a door frame embedded in the wall, a door leaf arranged in the door frame, and a rotating assembly arranged on the edge of the door frame and connected with the door leaf. The door leaf includes a door cover and is fixed on the door A plurality of fitting columns in the casing, a fish skeleton body embedded between the plurality of fitting columns, and a door panel arranged at the opening of the door casing and fixed with the door casing, the door casing is filled with a door casing High-strength concrete between the door panel; the rotating assembly includes a hanging ring block fixed on the frame edge of the door frame, a hook body hanging on the hanging ring block and a connecting beam arranged horizontally; the One end of the connecting beam is fixed to the hook body, the other end penetrates into the door pocket and engages with the fish skeleton body, and the connecting beam is fixed to the concrete pouring in the door pocket. The application has the effect of improving the connection strength between the door frame and the door leaf and preventing the door leaf from falling off from the door frame.

The invention provides an ultrahigh aqueduct local dismantling and rebuilding system and a construction method. An outer formwork supporting plate can move along a supporting plate sliding groove under the action of a lateral position adjusting body; an inner mold connecting plate is arranged in the middle of the aqueduct inner mold, and lateral position control pressure can be provided for the aqueduct inner mold through a wedge-shaped pressing plate; aqueduct top mold position control is conducted through the top mold position control body; the aqueduct to be cleared is hoisted and removed through a supporting hanging bracket; an aqueduct positioning device is adopted to control the position of the section aqueduct; connecting tenon ribs and post-cast connecting tenons are additionally arranged at the connecting parts of the connecting cross beams and the segment aqueducts; overhanging drainage pipes and permeable filling bodies are laid in the rear drainage grooves, and connecting anchor bars, joint grouting bodies and joint waterproof strips are arranged at the joints of the segment aqueducts and the reserved aqueducts; a joint sealing body, a tongue-and-groove tenon, a tongue-and-groove groove and a connecting anchor bar are arranged at the joint of the segment aqueduct, and fastening tension can be applied to the segment aqueduct through a pre-stressed anchor bolt. The construction efficiency can be improved, the aqueduct rebuilding construction quality is improved, and the traffic influence is reduced.

The invention discloses acombined type connected bamboo-concrete combined beam. The combined type connected bamboo-concrete combined beam comprises a bamboo beam, a concrete plate, bamboo pipes,high strength filling materials and reinforcing ribs, the concrete plate is located on the upper part of the bamboo beam, the outer side surfaces of the middle and lower parts of the bamboo pipesare bondedand fixed into bamboo holesby applying an adhesive in an embedded mode, reserved holes are formed in the positions, corresponding to the bamboo holes of the bamboo beam, of the concrete plate, and thereserved holes change in the shape of steps with large upper parts and small lower parts.The reinforcing ribs are arranged in the bamboo pipes in the longitudinal direction of the bamboo pipes,the reserved holes of the concrete plate and the bamboo pipes are filled with the high strength filling materials, and thereinforcing ribs are wrapped with the high strength filling materials. According tothe combined type connected bamboo-concrete combined beam, the efficient and reliable connection between the concrete plate and the bamboo beam is realized by using the combination of the natural original bamboo pipes, the reinforcing ribs and the high strength filling materials, the combination effect which can not be obtained by a single connection form is played through multiple combination connection, a ductile ideal failure mode is provided, the restriction of the natural original bamboo pipes avoids the early failure of concrete at joints, and the up and down separation of the bamboo beam from the concrete plate is effectively avoided.

The present disclosure relates to an unmanned aerial vehicle with a frame reinforcement structure. The drone includes: an upper substrate; a circuit board, the circuit board is located below the upper substrate in the height direction of the drone and is arranged roughly parallel to the upper substrate, and the upper substrate and the circuit board are fixed to each other through a plurality of connecting columns; and a reinforcing member, the reinforcing member is arranged between the upper substrate and the circuit board and the reinforcing member is used to connect the upper substrate and the circuit board to strengthen the structural strength of the upper substrate and the circuit board, at least two of the upper surfaces of the circuit board cross each other In the direction of , the reinforcing member includes a plurality of connection parts respectively extending along at least two directions intersecting with each other, and the connection parts are fixed to each other. The reinforcement is light in weight and takes up a relatively concentrated space, which can reserve a large overall space for other devices, which is beneficial to the layout of the drone. Moreover, the reinforcing member can increase the connection contact area between the upper substrate and the circuit board, thereby enhancing the overall structural strength and stability of the rack.

The invention provides a fixture device for machining a lower wire outlet base of a solid-sealed polar pole on a general machine tool. The fixture device comprises a base plate; a front plate is vertically arranged at one end of the upper end face of the base plate; a front jacking component for horizontally and axially jacking the lower wire outlet base is arranged on the front plate; a rear plate is vertically arranged at the other end of the upper end face of the base plate; a cushion block is arranged at the inner side of the rear plate; a left supporting plate and a right supporting plate are respectively arranged at the two sides of the middle part of the upper end face of the base plate; an upper positioning plate is supported on the upper end faces of the left and right supporting plates; a tapered iron pressing component for vertically and radially pressing the lower wire outlet base is arranged on the base plate between the left and right supporting plates; the front jacking component moves forwards to axially push one end face of the lower wire outlet base so that the other end face of the lower wire outlet base is tightly pressed on the cushion block in order to realize axial positioning; the tapered iron pressing component moves via a bevel so that the lower wire outlet base can be lifted in the radial direction and the upper plane of the lower wire outlet base is horizontally close to the lower plane of the upper positioning plate in order to realize radial positioning. The fixture device disclosed by the invention is capable of guaranteeing the precision of a lower wire outlet base product machined by a general machine tool so that the electric conductivity of a resistance loop of the solid-sealed polar pole is good, the potential safety hazards are reduced, and the manufacturing cost and machining cost can be greatly lowered.