75results about How to "Low installation requirements" patented technology

The invention discloses an external rotor motor for a cross-flow fan, and the motor comprises an external rotor which is coaxially fixed at the end part of an impeller of the cross-flow fan; the inner stator is partially arranged in the outer rotor and is coaxial with the outer rotor; and the oil-containing sliding bearing is arranged between the rotating shaft of the impeller and the outer rotor and allows the rotating shaft to rotate in the oil-containing sliding bearing. The assembling process of the external rotor motor is simpler, more convenient and faster, vibration and noise are smaller, the manufacturing difficulty and cost of the external rotor motor and the cross-flow fan can be reduced, and the use experience of a user can be improved.

The utility model relates to the technical field of assembly type building components, and discloses an assembly type floor slab of an integrated line pipe, which comprises a floor slab main body and a reinforcing mesh, the reinforcing mesh is positioned in the floor slab main body, the end part of the reinforcing mesh extends towards the periphery and penetrates out of the floor slab main body, and at least one connecting hole communicated with a line pipeline is arranged on the surface of the floor slab main body. A line pipeline is pre-arranged in the floor slab body, a plurality of inner grooves are formed in the side face of the floor slab body, and the free end of the line pipeline penetrates out of the floor slab body to be located in the inner grooves. In practical application, the production and construction cost is reduced, and simple and quick installation of the assembly type floor slab is achieved.

The invention discloses a full-stroke linear absolute position detection method, and belongs to the technical field of position detection. The invention aims to solve the problems of complex circuit structure and low detection precision of the existing full-travel rotor cable-free absolute position detection method. Comprising the steps that a permanent magnet array is installed on a rotor, an anisotropic magnetoresistive sensor array is correspondingly arranged on a stator, and the length of the anisotropic magnetoresistive sensor array is the position detection total stroke; the polar distance between adjacent permanent magnets is the same as the distance between adjacent sensors; determining a main sensor in a middle position in a coupling state according to the current sensor coupling number and the permanent magnet pole number, and calculating the current absolute position initial value of the rotor according to the angle reading of the main sensor; and position compensation is carried out on the current absolute position initial value of the rotor according to the pole number of the permanent magnets, the total number of the sensors and the relative position relation between the main sensor and the permanent magnet array, and the final detection position of the rotor is obtained. The method is used for absolute position detection.

The invention discloses a cam-driven clamping feeder, which belongs to the technical field of feeders and solves the problems of work efficiency and reliability. The key points of the technical solution are that the feeder comprises a feeding needle roller platform, a feeding main machine, an eccentric transmission mechanism, and a floating manipulator; the eccentric transmission mechanism comprises an input shaft for connecting a power source and an output shaft for connecting the feeding main machine, and the input shaft and the output shaft are in an eccentric position; the feeding main machine comprises a chassis, a main shaft, an eccentric swing mechanism, a sliding mechanism, and a parallel four-bar linkage mechanism, the main shaft is connected to the output shaft and drives the eccentric swing mechanism and the parallel four-bar linkage mechanism at the same time, the eccentric swing mechanism drives the sliding mechanism to move, the floating manipulator is fixed on the feeding needle roller platform and is above the sliding mechanism, the sliding mechanism and the parallel four-bar linkage mechanism cooperate with the floating manipulator to perform clamping and moving actions, thereby achieving the effect of efficient material transportation and stable and reliable performance.

The self-adaptive double-layer vibration isolation support comprises a damping vibration isolation pad, I-shaped section steel, a bottom plate, a variable stiffness system and a top plate which are sequentially connected from bottom to top, and reactor equipment, a vibration monitoring device and a stiffness calculation device are installed on the top plate; the variable stiffness system comprises a stiffness coarse adjustment system, a stiffness fine adjustment system and a scissor jack system; the rigidity coarse adjustment system is composed of rigidity coarse adjustment springs which are vertically arranged, the lengths of the rigidity coarse adjustment springs are arranged in an echelon mode, the rigidity fine adjustment system comprises longitudinal cylindrical spiral body springs which are horizontally arranged, and the torque multiplier and the worm mechanism are driven by a motor to change the horizontal and vertical endpoint distance of the scissor jack. And the type and the compression and stretching length of the spring participating in vibration control are adjusted. Compared with the prior art, the vibration isolation support has the advantages that the vibration isolation rigidity of the support is accurately and efficiently adjusted in a self-adaptive mode, and the limitation that in the prior art, vibration isolation supports need to be independently designed for different reactor devices is overcome.

This invention belongs to the field of nuclear magnetic resonance technology and discloses a compact superconducting coil heat transfer structure and a liquid helium-free superconducting magnet. The compact superconducting coil heat transfer structure, applied to a liquid helium-free superconducting magnet, includes a tubular superconducting coil winding frame. A flattened superconducting coil assembly is wound around the outer surface of the superconducting coil winding frame via grooves. A heat transfer plate is provided on the outer side of the superconducting coil winding frame, and an end-face heat-conducting plate is provided at each end of the superconducting coil winding frame. Each end of the heat transfer plate is connected to the corresponding end-face heat-conducting plate, and a heat transfer metal plate is connected to both end-face heat-conducting plates. The heat transfer metal plate is in contact with the superconducting coil assembly to form a closed heat transfer loop. This invention has a compact overall structure and, through the heat transfer plates, significantly reduces the risk of excitation quench, improving the ease of use and stability of the equipment.

The utility model discloses a food processing machine which comprises a main machine with a soybean milk making cavity, a cup cover installed above the soybean milk making cavity and a movable part installed in the installation cavity, an installation cavity is formed in the cup cover, and a through hole communicated with the soybean milk making cavity is formed in the bottom wall of the cup cover. The movable part is provided with a first communication nozzle and a second communication nozzle, and the movable part is movably arranged in the installation cavity so that the first communication nozzle and the second communication nozzle can be selectively communicated with the through hole. According to the food processor provided by the invention, through the transfer effect of the movable part, the number of the through holes of the cup cover is effectively reduced, the structure of the cup cover is simplified, the design and processing difficulty of the cup cover is reduced, the total part number of the cup cover is reduced, the miniaturization of the cup cover is facilitated, and the structural compactness of the cup cover is improved; and meanwhile, the design and installation difficulty of the sealing structure of the through hole is reduced.

The application belongs to the technical field of laser shaping, and discloses a scanning sheet light generating system for 3DLIF. The system comprises three modules, a first beam expanding and collimating module, a rotatable diaphragm and a second beam expanding module. The first beam expanding and collimating module is used for outputting collimated sheet light with a preset width. The rotatable diaphragm is provided with two slit bands on the outer circumference. Each slit band gradually rises along the circumferential direction and comprises a plurality of rectangular slits distributed continuously. The rectangular slits in the two slit bands are symmetric about the axis of the rotatable diaphragm. The collimated sheet light is incident from one of the rectangular slits, cut by the incident slit and emitted from the slit symmetric with the incident slit, and shaped into linear laser. The second beam expanding module is used for shaping the linear laser into scanning sheet laser with a diffusion angle. Through the application, the problems of complex structure, harsh installation requirement and non-parallel sheet light of the current sheet light source scanning system applied to 3DLIF technology are solved.

This invention relates to a method, system, and medium for measuring the spatial parameters of a monocular target object based on a 2D camera. The method includes: acquiring a calibration board image and an original distorted image captured by the 2D camera; calibrating the calibration board image using a calibration algorithm to obtain calibration parameters; correcting the original distorted image using the calibration parameters to obtain a corrected image; performing target detection; and outputting the external contour and target contour feature points of the target object; classifying the target contour feature points into upper boundary feature points and lower boundary feature points; calculating the relative distance between the target object and the 2D camera based on the lower boundary feature points and the calibration parameters; and performing curve fitting on the upper and lower boundary feature points and the lower boundary feature points, respectively, and calculating the actual height of the target object based on the calibration parameters. Compared with existing technologies, this invention has advantages such as improved measurement accuracy and adaptability to complex boundary targets.

The pot cover assembly comprises a cover body and an inner cover arranged below the cover body, an exhaust hole is formed in the inner cover, the pot cover assembly further comprises an anti-blocking cover arranged on the lower side of the inner cover, the projection, facing the inner cover, of the anti-blocking cover covers the exhaust hole, a heat insulation piece is fixed to the anti-blocking cover, and the heat insulation piece is fixed to the inner cover. The heat insulation piece is provided with a connecting part and a holding part, the connecting part is used for being fixedly connected with the inner cover, and the holding part protrudes out of the outer surface of the anti-blocking cover. The anti-blocking cover is fixed to the inner cover through the heat insulation piece, and the heat insulation piece is not prone to deformation at high temperature, so that the connecting effect and stability of the heat insulation piece and the inner cover can be kept, and stable connection and position stability of the anti-blocking cover are kept. When the anti-blocking cover is disassembled, a user can grasp the holding part, protruding out of the anti-blocking cover, of the heat insulation part to disassemble the heat insulation part and the anti-blocking cover from the inner cover together, and the holding part protrudes out of the surface of the anti-blocking cover, so that the heat insulation cover is convenient to hold by the user, the temperature of the heat insulation cover is low, and the user can obtain better touch feeling.

A truss-type formwork system for cast-in-place steel structure floor slabs includes a main structural I-beam, a support beam assembly, and a mounting system. The mounting system comprises: a plate assembly located at the flange of the main structural I-beam, including a fixed plate I and a fixed plate II disposed opposite to each other; a hanger rod disposed on the side end of the web of the main structural I-beam and used to connect the fixed plate I and the fixed plate II; an adjusting nut disposed at the connection between the fixed plate I and the hanger rod, and between the fixed plate II and the hanger rod; an abutment plate disposed on the hanger rod and located on the side end of the flange of the main structural I-beam; and a support beam disposed on the hanger rod and used to install the support beam assembly. This invention, by setting up a mounting system, is applicable to both main structural steel beams with a flange width greater than 200mm and those with a flange width less than or equal to 200mm. Furthermore, it exhibits high structural strength, good stability, and advantages such as simple installation, flexible application, and high turnover rate.

The utility model discloses a high-speed dispersing system which comprises a transmission device, a dispersing cavity, a liquid inlet cavity and a central shaft, the transmission device is in transverse transmission, is connected with the central shaft and is used for driving the central shaft to rotate around the axis of the central shaft, the dispersing cavity is connected with the central shaft and can rotate along with the central shaft, and the dispersing cavity is used for dispersing slurry. The liquid inlet cavity is connected with the dispersing cavity and used for conveying slurry into the dispersing cavity. During use, the liquid inlet cavity conveys slurry into the dispersion cavity, the transmission device drives the center shaft to rotate around the axis of the center shaft, the center shaft drives the dispersion cavity to rotate, and the dispersion cavity disperses the slurry in the dispersion cavity. A transverse transmission mode is adopted, and the transmission device is assembled and connected with the central shaft in the horizontal direction, so that the overall height of the high-speed dispersion system is shortened, the installation requirement of the high-speed dispersion system is lowered, meanwhile, downward movement of a load point of the central shaft is achieved, and the transmission stability of the high-speed dispersion system is improved.

The application relates to the hair dryer technical field and provides a hair dryer with a rear-mounted temperature controller, which comprises a hair blowing head, a heating assembly and a temperature controller arranged in the hair blowing head; the heating assembly comprises a heating wire support and a hollow heat insulation cover, the first heating wire is wound around the outer periphery of the heating wire support, and the hollow heat insulation cover is arranged on the outer periphery of the first heating wire; the temperature controller is arranged in the hollow heat insulation cover and located at one end of the heating assembly far from an air outlet, and the side of the temperature controller far from the air outlet is provided with the second heating wire; a handle is arranged in the handle and is connected with the hair blowing head in communication, and the air making assembly is used for supplying air to the hair blowing head. According to the application, the temperature controller is arranged at one end of the heating assembly far from the air outlet, and the second heating wire is arranged at the side of the temperature controller far from the air outlet, so that the reaction sensitivity of the temperature controller is ensured, the interference of the temperature controller on the airflow in the hair blowing head is reduced, and the airflow noise is reduced.

The present invention discloses a cable flaw detection method, medium and system, the method comprises the following steps: obtaining a cable image and generating a three-dimensional point cloud; obtaining the Gaussian curvature K of the point cloud by surface fitting; obtaining N local concave-convex position points according to the point cloud and searching for the neighboring points of each position point, fitting the coordinates of each neighboring point into a plane, and obtaining the plane normal vector P; fusing the Gaussian curvature K and the normal vector P to obtain a fused eigenvalue; performing a convolution operation on the fused eigenvalue to obtain the defect value of each position point; comparing the defect value of each position point with a preset threshold; if the defect value is greater than the preset threshold, judging the position point as a preliminary defect point, otherwise it is a normal point. The present invention has the advantages of high recognition accuracy and strong practicality.

The utility model discloses a totally-closed double-layer machine tool protection structure which comprises an inner layer protection structure and an outer layer protection structure, a main body of the inner layer protection structure and a main body of the outer layer protection structure are respectively made of metal plates, the inner layer protection structure is fixed on a machine tool body of a machine tool and arranged on the front side of a machining area of the machine tool, and a chip groove is formed in the bottom of the inner layer protection structure. A plurality of chip flushing blocks are arranged on the periphery of the chip groove, the chip groove is communicated with a chip cleaner of the machine tool, the chip flushing blocks are connected with the water outlet end of the high-pressure water pump, a protection pulling plate is connected between the rear side of the inner-layer protection structure and a spindle box of the machine tool, and the outer-layer protection structure is connected to the outer side of the inner-layer protection structure and fixed to the machine tool body. A protective door is arranged on the front side of the outer-layer protective structure, and the front side of the machining area is totally closed through the inner-layer protective structure and the outer-layer protective structure. The totally-closed double-layer machine tool protection structure adopts an inner and outer double-layer design, is convenient to mount and maintain, can realize totally closing of the front side of a machining area of a machine tool, and effectively solves the problems of poor sealing performance, difficulty in mounting and the like of an existing machine tool protection structure.

The utility model discloses an elastic cable sleeve of a connector. The elastic cable sleeve comprises a connector front end assembly, an elastic cable sleeve and a cable fixing seat. According to the utility model, the elastic cable sleeve is installed from the rear end of the cable fixing seat to form the cable fixing assembly, the cable fixing assembly and the connector front end assembly are in threaded connection to form the cable fixing clamp used for fixing the coaxial connector and the cable, the whole material is engineering plastics, the cable fixing clamp is formed through machining or injection molding and other processes, the machining modes are flexible and diverse, and the cable fixing clamp is simple in structure and convenient to use. Customized processing can be carried out according to requirements, and meanwhile material cost is low. The function of the cable fixing clamp can be matched with that of an existing cable fixing clamp, the cable fixing clamp does not participate in electrical signal transmission of the connector, the requirement for installation is low, even if installation is improper, the influence on PIM electrical performance of a product is small, and the stability and reliability of the product are guaranteed.

The utility model relates to a busbar connector comprising a fixing mechanism and an adjusting mechanism, and the adjusting mechanism is arranged on the fixing mechanism. The fixing mechanism is used for fixing the connector on a cabinet to ensure that the adjusting mechanism is stably placed; the adjusting mechanism is used for clamping the busbar, so that the insulating property is ensured while the busbar is fixed; the fixing mechanism comprises a fixing rod, the fixing rod is arranged to be in a strip shape, four fixing lugs are symmetrically and fixedly connected to the fixing rod, fixing holes are formed in the fixing lugs, and the fixing rod is in screw connection with the cabinet through the fixing holes; an adjusting groove is formed in one side of the fixing rod. According to the utility model, the insulating joint strip and the rubber cushion are added in the clamping groove, so that the clamping block body is not in direct contact with the busbar body, the insulating joint strip and the rubber cushion are in direct contact with the busbar, and the risk of exposure is avoided, so that the conditions of damage and the like are avoided, and the arrangement can avoid breakage and abrasion which are easy to occur in the traditional means; and potential safety hazards of workers are reduced.

The utility model discloses a printing roller ink scraper capable of being externally connected, which comprises a supporting shell, an even number of symmetrical rolling shafts are rotatably arranged in a groove of the supporting shell, and the supporting shell is connected with a supporting plate through a sliding shaft and a spring. The supporting plate is rotationally provided with a bent swing rod, the swing rod is provided with a limiting rack, and the inner supporting rod and the outer supporting rod are connected through a limiting sliding frame. A long shaft of the outer supporting rod is provided with a limiting rod matched with a limiting rack ratchet wheel. The ink scraper is composed of a sliding seat, a sliding rod, a mounting rod and a scraper. The ink scraping device can be directly installed on the upper printing roller shaft and the lower printing roller shaft and is suitable for printing rollers of various specifications, the ink scraping angle and position are flexibly adjusted through cooperation of limiting and the ratchet wheel and buffering stable supporting of the spring, the problems that a traditional ink scraping device is poor in installation adaptability, inconvenient to adjust, insufficient in stability and the like are solved, and the ink scraping effect of the printing rollers and the device universality are improved.

The present invention discloses a pedal feel simulator, which includes: a housing; a first elastic component and a second elastic component, both of which are installed in the housing; a pushing component, which is movably installed in the housing; a switch assembly, which is used to switch the position of the pushing component; wherein the pushing component is suitable for pushing the first elastic component to compress when the switch assembly fails, and the pushing component is suitable for pushing both the first elastic component and the second elastic component to compress when the switch assembly switches normally. The pedal feel simulator of the present invention can realize the pedal feel simulation of the braking system in a normal state, and when the switch assembly fails, the pushing component can also push the first elastic component to compress, thereby ensuring that the braking of the entire vehicle meets regulatory requirements and protects personnel safety, and has a simple structure and a small overall volume.

The utility model relates to a gas-liquid mixer based on venturi tube center air inflow, which comprises a venturi tube fitting, an interlayer piece and a guide tube combination piece, the interlayer piece is connected with one end of the venturi tube fitting, the interlayer piece is provided with an elastic body-shaped tube cavity extending into a contraction section of the venturi tube fitting, and the guide tube combination piece is connected with the venturi tube fitting. A water inlet throat pipe hole is formed in the end, located in the contraction section, of the elastic-body-shaped pipe cavity, the guide pipe combination piece is connected with the interlayer piece, and a center pipe connected with the other end of the elastic-body-shaped pipe cavity is arranged in the guide pipe combination piece. The gas-liquid mixer is favorable for improving the core flow area of the Venturi tube.

The present invention discloses an antenna phase shifter transmission device, including a transmission input part, a shift selection part and a transmission output part, wherein the transmission input part and the shift selection part are completely separated, and the shift selection part selects to establish a transmission connection with any output end of the transmission output part, thereby adjusting the phase of the phase shifter connected to the output end. The present invention uses two motors to respectively be responsible for power input and selection output, and can select to drive any number of phase shifters, with a compact structure, and the output end of the transmission output part can be spread out flat, which is beneficial to the antenna layout.

The utility model provides a high-power premixer which comprises a shell, an inlet flange, a mixed flow inlet pipe, a fuel gas mixing device, a mixed flow outlet pipe and an outlet flange, the mixed flow inlet pipe is a reducing pipe, an annular first fixing plate is arranged at the outlet end of the mixed flow inlet pipe, the mixed flow outlet pipe is a diverging pipe, and the fuel gas mixing device is arranged in the shell. An annular second fixing plate is arranged at the inlet end of the mixed flow inlet pipe, the second fixing plate and the first fixing plate form an annular channel, the annular channel is communicated with the inner side and the outer side of the mixed flow inlet pipe and the inner side and the outer side of the mixed flow outlet pipe, and the fuel gas mixing device is arranged in the mixed flow outlet pipe. And the fuel gas mixing device is used for deeply mixing fuel gas and air at the joint of the mixed flow inlet pipe and the mixed flow outlet pipe. The utility model has the beneficial effects that air and gas are deeply mixed, the installation requirement is reduced, the installation is simple, and the like.

The invention belongs to the technical field of vehicle engineering and provides a hydraulic power-assisted steering control unit, a hydraulic power-assisted steering system and a vehicle. The hydraulic power-assisted steering control unit comprises a power-assisted oil inlet path, a throttling oil path, a power-assisted working oil path and a fixed-difference pressure-reducing oil path, the power-assisted working oil path is connected with the power-assisted oil inlet path, the throttling oil path comprises a throttling input section and a throttling output section which are sequentially connected, the throttling input section is connected to the power-assisted oil inlet path, the throttling output section is connected to the power-assisted working oil path, and the fixed-difference pressure-reducing oil path is connected to the power-assisted working oil path. One end of the fixed-difference pressure reducing oil way is connected with the boosting oil inlet way, the other end of the fixed-difference pressure reducing oil way is connected with the oil return way, a fixed-difference pressure reducing valve is arranged on the fixed-difference pressure reducing oil way and provided with a pressure reducing control valve port, and the pressure reducing control valve port is connected to the throttling output section through a pipeline. The fixed differential pressure reducing valve and the throttling structure are connected in parallel to form the speed reducing valve, the flow of hydraulic oil supplied to the power-assisted working oil way from the power-assisted oil inlet way can be stabilized, and meanwhile the flow stabilizing mode is low in installation requirement and convenient to assemble.

The shaft element positioning structure comprises a handle and a shaft element partially inserted into the handle, a guide groove is formed in the position, corresponding to the shaft element, in the handle, and a locking piece and a fastening piece used for fixing the locking piece in the guide groove are arranged in the guide groove. A threaded hole matched with the fastening piece in a threaded mode is formed in the handle, a guide inclined face is arranged on the inner wall of the guide groove, a matched inclined face matched with the guide inclined face in a sliding mode is arranged on the locking piece, and the locking piece can be driven to move in the direction of the guide inclined face and compress the shaft element by screwing down the fastening piece. The door lock is more convenient to machine, the door lock is concise and attractive in appearance, the shaft element can be fixed by adjusting the fastener to drive the locking piece to move in the handle, a longer fastener does not need to be selected, and the installation requirement is lowered.

The utility model discloses an integrated intelligent control device, which comprises an intelligent screen and a function module, a first detachable connecting part is formed on a shell of the intelligent screen, and a second detachable connecting part is formed on a shell of the function module; the second detachable connecting part is connected with the first detachable connecting part in a matched mode, and the function module is detachably installed on the intelligent screen. According to the utility model, through the adaptive connection of the second detachable connection part and the first detachable connection part, the function module is detachably installed on the intelligent screen, that is, the function module and the intelligent screen are integrated into a whole to form the integrated intelligent control device, so that during installation, only a drive-by-wire box needs to be configured corresponding to the intelligent screen, and the function module is integrated on the intelligent screen; a drive-by-wire box does not need to be configured correspondingly, the wall body only needs to be provided with the intelligent screen corresponding to the installation position of the drive-by-wire box, and the installation requirement and the production cost can be reduced.

The invention relates to a tramcar vehicle-mounted control system, which adopts an asymmetric master-slave redundancy control system architecture and comprises a vehicle-mounted master control part and a vehicle-mounted backup control part, the vehicle-mounted main control part comprises a vehicle-mounted main control module, and a beacon processing module, a speed measurement module and a function configuration module which are respectively connected with the vehicle-mounted main control module, and the function configuration module generates a vehicle-mounted function configuration file according to project requirements of the tramcar; the vehicle-mounted backup control part comprises a vehicle-mounted backup control module, and a speed measurement module and a Beidou / GPS module which are respectively connected with the vehicle-mounted backup control module. Compared with the prior art, the method has the advantages of high configurability, good robustness, high availability, low cost and the like.

This application relates to the field of building assembly technology, and provides a modular steel structure box house assembly fixing device and box house. The fixing device includes: a load-bearing component, a rotating connector, a mounting frame, a hook plate, and an angle adjusting component. The load-bearing component is mounted on the upper surface of the upper crossbeam of the lower box house via the rotating connector. The mounting frame is mounted on the load-bearing component and located on the side of the upper box house. The hook plate is rotatably mounted on the mounting frame. The angle adjusting component is mounted on the hook plate and adjusts the rotation angle of the hook plate so that the hook plate presses against the upper surface of the lower crossbeam of the upper box house. The fixing device is installed on the lower box house via the rotating connector, making installation simple and quick. During installation, the weight of the upper box house allows the load-bearing component to automatically rotate, so that the hook plate automatically hooks onto the upper box house, thereby achieving self-locking and greatly improving installation efficiency. The angle adjusting component provides elastic compensation, reducing production precision requirements and installation requirements, making it suitable for various application scenarios.

The invention discloses a simple logging cable tension measurement and tension mutation alarm device, comprising a base partition, an outer shell and a tension display, wherein the partition is vertically fixed on the top surface of the middle part of the base, a front hinge that can be flipped back and forth is installed at the front end of the base, a tension wheel is rotatably installed on the top surface of the front hinge through a tension wheel shaft, one end of the tension wheel shaft is lengthened and a cable tension measurement device and a cable tension mutation alarm device are respectively connected on the shaft wall of the lengthened end, a DC power supply and a relay are installed at the lower part of the partition, a cover above the partition is fixed with an outer shell, an audible and visual alarm and a manual switch are installed on the top of the outer shell, and the tension display is externally arranged at a position convenient for operators to observe; the invention integrates measurement, alarm and control, has a compact structure, is low in cost, is easy to install and easy to repair and maintain, reduces the installation requirements for the wellhead pulley and the professional skill requirements for the operators, and is particularly suitable for the assembly of small logging winches.

The invention discloses a terminal assembly, an electric connector and an electric connector assembly. The terminal assembly comprises a terminal body; the interior of the terminal body is hollow to form a fluid channel, and the fluid channel is provided with a first opening and a second opening on the outer wall of the terminal body. Wherein the fluid channel is used for allowing a cooling medium to flow, and the cooling medium can enter the terminal body through the first opening or the second opening. Compared with an existing terminal with a cooling structure, the terminal body is internally provided with the fluid channel for the cooling medium to circulate, and the fluid channel does not depend on a gap formed between the insulating shell and the surface of the terminal. According to the terminal structure, the cooling medium can directly flow through the internal flow channel of the terminal body, and due to the fact that the cooling medium directly flows in the terminal, the requirements for the internal structure of the shell and the installation structure between the shell and the terminal are lower, and the design and manufacturing processes are simplified.

The utility model relates to a jacking and sliding construction device for a large-section double-layer cantilever steel box girder. The jacking and sliding construction device comprises a sliding shoe and a hydraulic crawler, wherein the sliding shoe is arranged in a sliding shoe distribution girder structure and used for providing jacking and lifting power for the steel box girder, and the hydraulic crawler is arranged on a sliding rail and used for providing sliding advancing power for the sliding shoe. The position control device can effectively achieve the effect of accurately controlling the position of the jacked and slipped steel box girder, so that the operation flexibility is improved, the construction period is shortened, the economic benefit is high, and the construction cost is effectively reduced.