4331 results about "Close contact" patented technology

The invention discloses a preparation method of a high-heat-conductivity and high-density normal-temperature hydrogen storage material block, and relates to the field of hydrogen storage materials, and the preparation method comprises the following steps: step 1, uniformly mixing normal-temperature hydrogen storage material powder, binder powder and carbon material powder according to a set mass ratio to form mixture powder; 2, putting the mixture powder into a tablet press mold, and pressing the mixture powder into blocks; step 3, carrying out heat treatment on the block body under a vacuum or inert atmosphere condition; and 4, after heat treatment is completed, cooling the material to a set temperature, and taking out the material to obtain the high-heat-conductivity and high-density normal-temperature hydrogen storage material block. Through a pressing-cladding method, the binder and the normal-temperature hydrogen storage alloy powder are mixed, pressed and formed, so that the binder and the alloy particles are in close contact or are embedded, the binder is melted through heating, the alloy particles are coated with the melted binder, the alloy particles are adhered, the contact thermal resistance of the alloy particles is reduced, and the hydrogen storage capacity of the hydrogen storage alloy is improved. And the thermal conductivity of the material is greatly improved.

The invention provides a full-focusing ultrasonic imaging method for multi-modal damage of a composite material, and the method comprises the steps: calculating the correlation of the reflection intensity of a sound wave signal at different moments and spatial positions through employing an established quantitative corresponding relation, recognizing a close contact region and a loose separation region between a bonding layer and a substrate, and carrying out the recognition of the close contact region and the loose separation region. Judging the continuity distribution condition of the interface contact state; according to the continuous distribution condition of the interface contact state, key feature points of dynamic damage evolution are extracted, a time sequence analysis method is adopted to track the feature points to adapt to damage features of dynamic changes, and prediction data of the damage expansion trend are obtained; and according to the dynamic representation result of the interface state, fusing the obtained multi-period signal characteristic data, carrying out quantitative calculation on the area change of the debonding region, judging the residual distribution state of the bonding strength, and obtaining a comprehensive evaluation report of the damage degree of the bonding interface.

The invention discloses a server, which comprises a mainboard module, a liquid cooling substrate, a first heat dissipation pipeline and a second heat dissipation pipeline, and is characterized in that a plurality of heating modules on a mainboard body of the mainboard module are at least arranged at intervals along a first direction; the liquid cooling substrate covers the mainboard body, and the outer peripheral contour line of the liquid cooling substrate exceeds the outer peripheral contour line of the mainboard body; the first heat dissipation pipeline and the second heat dissipation pipeline are both embedded in the surface of the side, away from the mainboard body, of the liquid cooling substrate, and the first heat dissipation pipeline communicates with the first sub liquid cooling plate of the heating module with the maximum heat generation amount in the multiple heating modules; the second heat dissipation pipeline at least extends in a bent shape in the first direction; the liquid cooling substrate is attached to at least a part of the heating modules in the rest of the heating modules with the maximum heat production capacity. The problem that all heating elements on a mainboard of a server cannot be effectively cooled by a liquid cooling heat dissipation system in the related technology is at least solved.

The utility model discloses a self-dedusting device for an environment-friendly gas insulated ring main unit, which comprises a bottom plate, two springs and two automatic telescopic rods are fixedly connected to the upper surface of the bottom plate, a mounting frame is fixedly connected to the upper ends of the springs, a brush is arranged on the surface of the mounting frame, and the cleaning end of the brush is in close contact with the heat dissipation position of the insulated ring main unit. The upper end of the automatic telescopic rod and the lower surface of the mounting frame are fixedly connected with an electromagnetic block and a magnetic suction plate respectively, the electromagnetic block makes close contact with the magnetic suction plate, positioning plates are arranged on the left side and the right side of the bottom plate and make close contact with the inner wall of the insulating ring main unit, and the upper end of the front surface of each positioning plate is fixedly connected with an air blower. Lead screws are fixedly connected to the left surface and the right surface of the bottom plate, the ends, away from the bottom plate, of the lead screws make close contact with the positioning plate, and butt joint mechanisms are arranged between the lead screws and the positioning plate. Through the device, the dust removal convenience is improved, and the influence of the dust removal device on the maintenance work of the insulating ring main unit is reduced.

The invention discloses an assemblage multi-robot collaborative welding system in ship sections, and relates to the technical field of industrial robot collaborative control, the assemblage multi-robot collaborative welding system comprises an industrial internet platform, the industrial internet platform is in communication connection with the following modules: a visual inspection modeling module, which is used for scanning the surface of a workpiece through a 3D camera, constructing a point cloud model, and establishing a point cloud model; matching the point cloud model with a design drawing, and identifying a deviation between an actual workpiece and the drawing; and the path planning and correcting module is used for planning a collision-free welding path in combination with the visual detection data and the motion range of the robot. Through high-precision visual inspection scanning and an SLAM matching algorithm, a workpiece point cloud model is constructed in real time and is accurately aligned with a design drawing, the welding seam position and the workpiece geometric deviation can be accurately recognized, a collision-free welding path is generated in combination with robot kinematics constraint and a safety boundary, it is ensured that the pose of the tail end of a welding gun is attached to the surface of the workpiece, and the welding quality is improved. Welding deviation is reduced, and process stability is ensured.

The invention relates to the field of welding facilities, in particular to a bearing seat welding device which comprises a table top, a centering column is fixedly mounted in the middle of the upper end of the table top, a supporting ring is coaxially and fixedly mounted on the outer surface of the centering column, and push tables are arranged on the two sides of the centering column and elastically connected with the table top. A positioning column is fixedly installed in the middle of the upper end of the pushing table, positioning lugs are obliquely installed on the front edge and the rear edge of the upper end of the pushing table, the two positioning lugs are symmetrical with the axis of the positioning column as the symmetric center, a welding part is installed on the rear portion of the upper end of the table top, and the axis of the centering column and the axis of the positioning column are located on the same plane. The welding convenience is improved, the bearing seat can make close contact with the mounting lugs, follow-up welding forming is effectively facilitated, and meanwhile the welding efficiency is improved.

The invention discloses a polygonatum sibiricum polysaccharide extracting solution concentration scraper, and belongs to the technical field of concentration scrapers. Comprising a hollow rod, a mounting box is fixedly connected to the top end of the hollow rod, a connecting plate is fixedly connected to the upper surface of the mounting box through a plurality of bolts, and a hollow main shaft is fixedly connected to the center of the upper surface of the connecting plate; air is supplied to the fixing box through the air conveying pipe, the U-shaped pipe, the communicating pipe and the hose, the piston plate is pushed to drive the supporting rod and the scraper body to extend outwards, initial close contact between the scraper and the inner wall of the evaporation barrel is achieved, and meanwhile a second spring in the supporting rod can adjust contact pressure in a self-adaptive mode to ensure that the supporting rod is tightly attached to the inner wall of the evaporation barrel; meanwhile, the first spring is matched to drive the scraper body to be stably retracted when gas is stopped, the problem of gaps after long-term use is thoroughly solved, uneven film formation caused by missing scraping is avoided, materials are prevented from being retained in the gaps and being overheated and carbonized, and the purity and activity of the polygonatum sibiricum polysaccharide are guaranteed.

A vehicle door structure includes a weather strip part including hard member and soft members that are integrally molded, and includes: a base; a first seal portion in close contact with a protrusion in a fitting portion from a vehicle upper side; a second seal portion in close contact with the fitting portion's vehicle upper side surface; a third seal portion in close contact with a vehicle body; and a fixing portion sandwiching and fixing the protrusion between the first seal portion and the fixing portion. The hard member is continuously provided to pass the second seal portion's vehicle upper side from the base's inner end in the vehicle width direction, have a bent portion towards upward from the vehicle upper side, and further pass the first seal portion and an inside of the fixing portion in the vehicle width direction up to the third seal portion's vehicle upper end.

The invention discloses a gas tank welding tool for a high-voltage switch cabinet, and relates to the technical field of welding tools. Comprising a moving block, the moving block is in threaded connection with a screw, a circular plate is fixedly connected to the outer side of the moving block, materials are placed on the top of a platform, a middle rod is fixedly connected to the end, away from the moving block, of the circular plate, and a side plate is fixedly connected to the outer side of the middle rod. According to the gas tank welding tool of the high-voltage switch cabinet, the inclined edges of the side plates make contact with the inner wall of the valve hole, meanwhile, extrusion is generated between the gas tank and the limiting rods, and compression springs are stressed and compressed, so that the limiting rods make close contact with the gas tank, the inclined faces of the side plates are matched with the valve hole, and automatic centering can be achieved through the geometrical characteristics of the limiting rods and the valve hole; the gas tank can be quickly and accurately positioned to a preset position, the positioning error can be controlled within an extremely small range, the accuracy of the relative position of each component of the gas tank is effectively ensured, and the strict requirement of the gas tank of the high-voltage switch cabinet on the mounting precision is met.

The invention relates to the technical field of thermal insulation material detection, in particular to a thermal insulation material performance testing device which comprises a testing box body, a box cover is detachably installed at the upper end of the testing box body, an extrusion guide assembly is arranged in the testing box body, and the extrusion guide assembly comprises a bearing frame fixedly installed on the rear side wall in the testing box body. The output end of the first electric cylinder penetrates through the bearing frame and is fixedly provided with an extrusion base. The lower end face of the extrusion base is provided with an assembly groove. An elastic extrusion assembly is arranged inside and outside the test box body, and the elastic extrusion assembly comprises an elastic extrusion air bag movably mounted in the assembly groove. The extrusion of the elastic extrusion air bag on the extrusion plate is expanded from the middle to the left side and the right side, so that air at the contact part of the thermal insulation material and the hot wire sensor can be extruded out from the middle position to the outer side, the air can be discharged more quickly by optimizing the extrusion mode, and the thermal insulation material and the hot wire sensor can be in a tight contact state more quickly.

The invention provides a tool applied to the field of petroleum drilling, and particularly relates to an electrically-controlled reducing cutter, which has the technical scheme that the extension and retraction of the cutter are accurately controlled by a control base driving motor and an electromagnet, wherein the control base driving motor comprises an MCU (Microprogrammed Control Unit) and a wireless communication module; the control base can receive a ground instruction and transmit an underground working state signal back in real time; meanwhile, the ratchet mechanism is matched with the electromagnet to achieve extending and retracting of the cutter position, and the pawl is always in close contact with the ratchet wheel under the action of the spring. And the lower shell is in threaded connection with the guide shoe. The cutting knife is driven to rotate through the transmission shaft, the cutting knife is controlled to stretch out and retract through the intelligent electric control system, continuous cutting of casing pipes with different pipe diameters can be achieved, the tripping frequency is reduced, and the casing pipe cutting efficiency in the well abandoning operation process is greatly improved.

The invention relates to the technical field of robots, and discloses a municipal drainage pipeline local grinding robot and a method thereof.The municipal drainage pipeline local grinding robot comprises a robot body, a walking mechanism, a fixing mechanism, a grinding mechanism and a control mechanism; the robot main body comprises a box body and a plurality of driving mechanisms arranged in the box body; the control mechanism is used for controlling the driving mechanisms to drive the walking mechanism, the fixing mechanism and the grinding mechanism to operate. The walking mechanism comprises walking wheels and is used for driving the robot to move in a DN400-600 pipeline at the corresponding pressure smaller than the maximum pressure allowed to be borne by the pipe wall. The fixing mechanism comprises a plurality of fixing plates arranged on the periphery of the robot body, and the fixing plates can extend to be in close contact with the inner wall of the DN400-600 pipeline. The grinding mechanism is used for conducting local grinding and comprises a grinding head and a grinding arm. According to the method, the local problem of the municipal drainage pipeline can be accurately and efficiently repaired, secondary damage to the pipeline in construction is avoided, all operation steps are accurate and controllable, the overall stability is high, and adaptability is good.

A sight mounting system (300; 400) for mounting an optical sight (200; 500) to a firearm, comprising: a sight mounting interface (110; 410), and an oblong dovetail member (305), wherein the oblong dovetail member (305) is arranged to be forced in close contact with a leaning back wall (125) of the sight mounting interface (110) and a leaning rear face (240; 540) of the optical sight (200; 500), wherein the leaning front face (245; 545) of the reflex sight is forced against the leaning front wall (135) of the sight mounting interface (110). An optical sight (200) for mounting to a sight mounting interface (110; 410), and an adapter plate for mounting a sight to a sight mounting interface

A grommet according to one aspect of the present disclosure includes: an annular mounting portion that is to be fixed to a surrounding portion of an insertion hole of a vehicle body panel; and a tubular stress-absorbing portion that includes a tubular side wall that extends from an inner circumferential rim portion of the mounting portion toward one side in an axial direction, and a bottom wall that partially closes off the tubular side wall at a front end of the tubular side wall. Furthermore, the grommet includes tubular insertion portions that are provided integrally with the bottom wall, and that cover the outer circumferences of wire harnesses inserted into the insertion hole. The mounting portion includes an annular seal portion that comes into close contact with the surrounding portion of the insertion hole of the vehicle body panel. The side wall is flexible.

The utility model relates to a cat litter basin which comprises a shell, a litter basin body is arranged in the shell, and a scraper knife is arranged above the litter basin body. The shell is further provided with a sliding rail, the traveling crane can slide on the sliding rail, and the scraper knife is rotationally connected with the traveling crane. The sliding rail and the bottom of the sand basin are arc-shaped, have the same bending radian and correspond to each other in position; a torsion structure is arranged at the rotating joint of the scraper knife and the travelling crane; a first limiting wall is arranged at one end of the scraper knife, a second limiting wall is arranged on the traveling crane, and the first limiting wall can abut against the second limiting wall in the process that the scraper knife rotates relative to the traveling crane. The shovel blade is driven by the travelling crane to automatically shovel cat excrement; besides, the bending radian of the sliding rail for guiding the traveling crane to move is set to be the same as the radian of the sand basin, a torsion structure is arranged to enable the scraper knife to be in close contact with the bottom of the sand basin in the moving process, and it is guaranteed that cat excrement is thoroughly cleaned as much as possible; meanwhile, the scraper knife is pressed down through the limiting structure.

The invention relates to the technical field of plastic plate processing, and discloses a building plastic plate polishing machine which comprises a shell, a conveyor is fixedly connected to the inner wall of the shell, fixing frames are fixedly connected to the left side and the right side of the conveyor, and rotating rods are rotatably connected to the inner walls of the two fixing frames; a user places a plastic plate needing to be polished on the conveyor, the conveyor is started to convey the plastic plate to move towards the polishing roller, through the grinding assembly and the reciprocating assembly, the polishing positions of the polishing roller and the plastic plate are changed, contact pressure is dispersed, the situation that the polishing roller continuously polishes the same area is avoided, and meanwhile gas sprayed out of the gas spraying holes is used for polishing the plastic plate. And scraps on the plastic plate are blown away, the situation that the contact face between the position and the polishing roller is tighter, more scraps can be generated during polishing, the scraps are accumulated, and secondary abrasion of the polishing roller is caused due to local protrusion of the plastic plate is avoided, and therefore the situation that local abrasion of the polishing roller is too fast due to unevenness of the plastic plate is effectively prevented.

The invention discloses horizontal concrete drain pipe internal pressure test equipment, and relates to the technical field of concrete drain pipe internal pressure tests. The mounting plate is arranged at the top of the bottom plate; two adjusting sliding grooves are formed in the position, located below the sliding baffle, of the bottom plate, and two adjusting sliding blocks are fixedly connected to the bottom of the sliding baffle. According to the horizontal concrete drain pipe internal pressure test equipment disclosed by the invention, when the open end of a drain pipe body is sealed, the drain pipe body is moved to a specified position between a matching baffle and a sliding baffle, a hydraulic cylinder III drives a middle column to move towards the interior of the drain pipe body, and in the moving process, the hydraulic cylinder III drives the middle column to move; the sealing gasket is gradually clamped on the inner wall and the outer wall of the opening end of the drainage pipe body, one-layer sealing is achieved, the air pump is started, the air pump inflates the interior of the sealing air bag through the air pipe, the expanded sealing air bag makes close contact with the inner side wall of the drainage pipe body, and the second-layer sealing effect is achieved.

The utility model discloses a shoe anti-rollover performance test device, comprising a simulation foot device which comprises a simulation leg model and a simulation foot model, the simulation leg model simulates knee joint motions when a leg treads and lifts up, and the simulation foot model wears a shoe to simulate ankle joint motions when the foot stands or laterally stretches and lifts up; the ground-like device is provided with a treading platform mechanism and a lifting mechanism, the treading platform mechanism is provided with a test platform, and the test platform is provided with a treading plane for simulating the simulation foot mold and bears treading force generated when the simulation foot mold performs lateral pedaling and stretching actions; the lifting mechanism controls the treading platform mechanism to move in the vertical direction so that the sole of the simulation foot mold can make close contact with the testing platform. And a control and data acquisition module. The utility model provides an anti-rollover performance test device for shoes, which can simulate landing angles, impact forces and action time between different legs and feet and the ground, and evaluate the overall anti-rollover performance difference of the shoes under different exercise intensities.

The invention relates to the technical field of metal machining, and discloses a vertical and horizontal seven-axis five-linkage turn-milling combined machining center which comprises a machine base, a multi-axis turn-milling mechanism is fixedly connected to the upper surface of the machine base, a telescopic groove is formed in the inner side of the machine base, and an electric push rod is fixedly connected to the rear side face of the inner wall of the telescopic groove. According to the multi-axis turning and milling machine, the clamping base drives a workpiece to move forwards to be away from the multi-axis turning and milling mechanism, it is avoided that a worker makes close contact with the multi-axis turning and milling mechanism, and the use safety is improved; the telescopic clamping jaw and the rotary clamping jaw clamp a workpiece, the workpiece is prevented from falling off in the moving process, the stability in the machining process is improved, the machining quality is improved, the telescopic clamping jaw and the rotary clamping jaw elastically fit the surface of the workpiece to clamp the workpieces of different sizes, and the clamping applicability is improved.

The utility model discloses a side-hung sash window sliding support assembly with an anti-shaking function and an outward-opening top-hung window, and belongs to the technical field of side-hung sash window production. The side-hung sash window sliding support assembly comprises a window frame transverse connecting rod, a window sash transverse connecting rod and a rotating assembly, and sliding rails are arranged on the upper portions of the two sides of the window frame transverse connecting rod respectively; sliding grooves are formed in the lower middle portions of the two sides of the sliding block respectively, the sliding rails are arranged in the sliding grooves, the sliding block is provided with a vertically-through through hole, a limiting pipe with the lower end open and the upper end closed is installed in the through hole, a compressed spring and a ball which are arranged from top to bottom are arranged in the limiting pipe, and the ball makes close contact with the upper face of a window frame transverse connecting rod. The lower sliding support assembly of the outward-opening top-hung window is the side-hung window sliding support assembly. The rail type sliding structure is adopted, compared with a traditional matching structure that a sliding block is arranged in a sliding groove, opening and closing operation is smoother, and the sliding block is provided with the limiting pipe internally provided with the compressed spring and the ball, so that a window sash is kept in a stable state in the using process.

The utility model relates to an automatic array device, in particular to an automatic array device for stacking penicillin bottles, which comprises a conveyor, an operating table, a screw rod, a servo motor, a placing frame, a counting sensor and the like, the conveyor is arranged in the middle of the front side of the operating table, the counting sensor is arranged on the conveyor, the servo motor is mounted on the right side of the operating table, and the screw rod is arranged on the screw rod. A lead screw is rotationally connected to the operation table, the right end of the lead screw is connected with an output shaft of the servo motor, and a containing frame is slidably connected to the operation table and is in threaded connection with the lead screw. The penicillin bottles are sequentially conveyed into the seven spaces of the containing frame through the conveyor to be stacked in an array mode, when a contact rod makes contact with a fixing plate, an extrusion plate can be pushed to move forwards, under the blocking effect of a stop rod, the penicillin bottles can be arranged in order, people do not need to arrange the penicillin bottles manually, convenience is brought to people, and the working efficiency is improved. And the penicillin bottles are in close contact, so that the stability when the penicillin bottles are driven by the placing frame to move is improved, and the penicillin bottles are prevented from being damaged.

To provide a high efficiency light guide element.SOLUTION: A light guide element has a first light guide portion that propagates a light beam incident thereon while reflecting the light beam therein, and a second light guide portion that emits the light beam from the first light guide portion part by part while reflecting the light beam therein. A first optical film 10-i is provided on the first light guide portion, and a second optical film 11-i different in characteristics from the first optical film is provided on the second light guide portion to be adjacent to the first optical film. A first light guide member 1-i constituting the first light guide portion and a second light guide member 1-ii constituting the second light guide portion are closely adhered or joined to each other.SELECTED DRAWING: Figure 1

The invention relates to the technical field of battery manufacturing, in particular to an automatic welding mechanism and an automatic assembling and welding production line. The first workbench is rotationally connected to the rack, a plurality of first bearing plates are fixedly arranged on the edge of the first workbench, and the first bearing plates are distributed on the edge of the first workbench in an array mode; the first welding assembly comprises a first welding part and a plurality of first pressing parts, the first welding part is slidably connected to the rack in the vertical direction, the output end of the first welding part is perpendicular to the rotating path of the first bearing plate, and the first pressing parts surround the output end of the first welding part, are slidably connected to the rack and are used for abutting against the convergence disc and the cover plate; according to the application, the confluence disc and the cover plate are ensured to be in close contact and close fit, the problems of pseudo soldering, non-uniform penetration and the like caused by a gap or deviation are prevented, and the uniformity of a welding seam is ensured.

The invention discloses a ball nut internal thread bent rod grinding system device and an assembling technology, and relates to the technical field of ball nut internal thread grinding, the ball nut internal thread bent rod grinding system device comprises a machine body, a chuck rotationally arranged on the machine body and a grinding assembly, and further comprises an adjusting assembly, and the adjusting assembly comprises a supporting plate arranged on the chuck; the two clamping plates are symmetrically arranged on the supporting plate and are in elastic sliding connection with the supporting plate, and the two clamping plates are used for clamping the ball nut from the two sides when the ball nut is placed; the adjusting plate is located behind the clamping plate and elastically and slidably connected with the supporting plate. By adjusting the ball nut through the adjusting plate, no matter how the specification of the nut changes, it can be guaranteed that the front end and the rear end of the flange part of the nut make close contact with the clamping plate and the push plate, it is guaranteed that the axial and radial position heights of the flange parts of the nuts in the same batch are consistent, then the distance between the front end of the nut and a grinding wheel is constant, and it is guaranteed that the grinding feeding path is unified.

The utility model provides a thermal power plant cloth bag convenient for dust removal, which relates to the field of dust removal cloth bags and comprises a support, a plurality of monomer structures are mounted in the support, every two monomer structures are in close contact, each monomer structure comprises two fixing rings and a short cloth bag, the two fixing rings are fixedly connected with the short cloth bag, and the short cloth bag is fixedly connected with the support. Each short cloth bag is corrugated, and the outer surface of each short cloth bag is sleeved with a tightening ring. According to the thermal power plant cloth bag facilitating dust removal, the multiple short cloth bags are of a gradient pore structure, surface pores are slightly smaller to guarantee the filtering precision, internal pores are gradually enlarged to facilitate dust falling, and the short cloth bags are corrugated, so that the surface area is increased, meanwhile, airflow and dust distribution is changed, dust removal is facilitated, and the dust removal efficiency is improved. And by arranging the multiple sets of nuts, when the multiple sets of nuts are taken out, rapid replacement is facilitated, and therefore the problems that traditional dust removal and ash removal are difficult, and replacement is not easy are solved.

There is provided an automatic measuring apparatus that automates an inexpensive and easy-to-use contact-type measuring device. An automatic measuring apparatus includes a measuring device including a movable element that is displaceable with respect to a fixed element and moves forward and backward to be brought into contact with or away from a workpiece, and a displacement detection part that detects a displacement or position of the movable element, and an automatic operation part that automates the forward / backward movement of the movable element by power. When the movable element is brought into contact with the workpiece, vibration is applied directly or indirectly to at least one of the workpiece and the measuring device in such a manner that contacting surfaces of the workpiece and the measuring device are in close contact with each other by changing a relative position and posture between the workpiece and the measuring device.

The invention belongs to the technical field of electrical equipment, and particularly relates to an electric control copper bar assembly for a new energy automobile, which comprises a mounting base, a connecting part is arranged in the mounting base, and two sections of internal copper bars in the mounting base can be subjected to extrusion connection and extrusion disconnection through the connecting part to realize power-on and power-off of the two sections of internal copper bars; fixing parts are fixedly arranged at the two ends of the mounting base, and the fixing parts can extrude and fix one end of the external copper bar and one end of the corresponding internal copper bar, so that close contact between one end of the internal copper bar and the external copper bar is ensured, and loosening is avoided; and a plurality of positioning parts are further arranged in the mounting base, and the positioning parts can provide positioning and convenient mounting for fixed mounting of the mounting base. The internal copper bar and the external copper bar are conveniently and tightly connected, the internal copper bar can be fixedly connected in an extrusion mode through a device in the assembly, and the vibration influence on the assembly during operation of a new energy automobile is reduced.

The invention belongs to the field of constructional engineering, and particularly relates to a connecting joint of a prefabricated reinforced concrete column and a prestressed steel reinforced concrete beam and a construction technology. The structure for connecting the joint by adopting the pi-shaped connecting piece is as follows: one end of the prestressed steel reinforced concrete beam is connected with the pi-shaped connecting piece of the prefabricated reinforced concrete column, a concrete layer is arranged at the top of the section steel at the end, the bottom of the section steel is exposed, and a vertically through bolt channel is arranged along the vertical direction; and one end of the prefabricated prestressed steel reinforced concrete beam extends between the upper web plate and the lower web plate of the pi-shaped connecting piece and is in close contact fit with the upper web plate and the lower web plate. According to the structure of the overhanging short beam-flange clamping sleeve connecting joint, an overhanging short beam is arranged at the joint of a prefabricated reinforced concrete column and a prestressed steel reinforced concrete beam, and the prefabricated reinforced concrete column is connected with the prestressed steel reinforced concrete beam through the overhanging short beam on the prefabricated reinforced concrete column; and the prestressed steel reinforced concrete beam is clamped on the flange clamping sleeve at the end part of the overhanging short beam through the flange plate at the end part.

The utility model discloses a shielding pogo pin assembly which comprises a plastic support and further comprises a sliding groove body which is linearly distributed at the lower end of the interior of the plastic support, a second sliding groove body which is linearly distributed at the upper end of the interior of the plastic support, and a shielding needle head which is slidably arranged in the second sliding groove body in a sleeved mode. The shielding pin head is arranged in the first sliding groove body in a sliding and penetrating mode, the top of the shielding pin head extends towards the outer portion of the plastic support, and the connecting assembly is arranged in the shielding pin head in a sliding and penetrating mode. The spring can exert force to enable the conductive bead to jack up the connecting needle head to be in close contact with an equipment connecting point, so that a stable current and signal transmission path is formed, the top of the shielding needle head adopts a riveting opening closing design, the shielding needle head is additionally arranged to meet the design requirement that a riveting opening is hidden in a product, and then the waterproof and dustproof performance is better.

The utility model relates to the technical field of beam-pumping units, in particular to a horsehead receding device of a pumping unit. Comprising a horse head rotationally connected with one end of a walking beam, the horse head comprises two side plates fixedly connected, two lug plates are fixed between the two side plates and fixedly connected through a vertical rotating shaft, the rotating shaft is rotationally connected with one end of the walking beam, a square rod is arranged on the walking beam in a sliding mode, and a telescopic rod can drive the square rod to slide. A fixing rod is fixed to the lower end of the square rod, a push rod is fixed to the lower end of the fixing rod, a rack is fixed to the end, away from the fixing rod, of the push rod, and a gear ring is concentrically and fixedly arranged on the rotating shaft in a sleeving mode. The electric telescopic rod drives the square rod to slide, manual climbing operation is not needed, and potential safety hazards of climbing operation in a traditional device are thoroughly eliminated.