3476 results about "Body frame" patented technology

A walker for an animal that includes five expandable shaft members, each of the five expandable shaft members include an inner solid shaft and an outer hollow slider. The five expandable shaft members includes two horizontally configured shaft members and three vertically configured shaft members. A solid support shaft is coupled to the two horizontally configured shaft members. The two horizontally configured shaft members and the solid support shaft form a body frame. Further, the walker includes body support members for the animal to rest thereon, at least one rear wheel coupled to a motor, and two front wheels. The three vertically configured shaft members are coupled to the at least one rear wheel and the two front wheels, respectively.

The invention discloses a new energy automobile body frame lightweight design method based on digital twinning, and relates to the technical field of new energy automobile body structure design and computer-aided engineering simulation, and the method comprises the following steps: S1, building a digital twinning body connected with a physical automobile body sensing system; s2, a dynamic precision topology network module is used for dynamically dividing a simulation precision area of the vehicle body frame according to the mechanical energy transmission path and the real-time sensing data. According to the new energy automobile body frame lightweight design method based on digital twinning, intelligent allocation of computing resources is realized through a dynamic precision topology network, and the computing burden of multi-physics coupling simulation is effectively reduced while precise prediction of a key structure is ensured; the sharp contradiction among the model precision, the real-time response and the optimization efficiency is effectively solved, and effective closed-loop iteration of the lightweight design is achieved under the complex constraint condition.

A high-low machine includes a support frame (110) mounted on the floor, a main body frame (120) connected to the support frame (110); a weight part (130) mounted to be able to rotate at one point on a main body frame (120) and on which the weight plate (131) is mounted; a rotating part (140) rotatably mounted at another point of the main body frame (120); a connecting part (150) provided to connect the weight part (130) and the rotating part (140); a grip part (160) connected to one end of the rotating part (140) and providing a space for the user to grip.

The invention discloses a welding, grinding and repairing device for a conical roller of a ring rolling machine, and particularly relates to the technical field of machining and repairing, the welding, grinding and repairing device for the conical roller of the ring rolling machine comprises a main body frame, a welding assembly and a grinding assembly, the small-diameter end of the conical roller is connected with a driving linkage rod synchronously rotating along with the conical roller, the other end of the driving linkage rod extends into the main body frame to be connected with an intermittent transmission module, the intermittent transmission module is in transmission connection with a threaded driving rod, and the top of the main body frame is connected with a plurality of lifting linkage rods. The threaded driving rod and the lifting linkage rod are connected with a smooth body, the middle of the smooth body is in threaded connection with the threaded driving rod, the smooth body is connected with a lifting table, and a lifting transmission module is connected between the lifting table and the smooth body. And one-time welding and grinding can be achieved, and therefore repairing is more efficient.

The invention discloses a steel structure welding guiding and positioning device, which relates to the technical field of steel structure processing, and comprises a main body supporting frame, a workpiece dynamic limiting and conveying unit and a self-centering clamping and welding module, and is matched with a guiding and feeding mechanism, a self-adaptive reducing connecting cabin and a multi-dimensional self-adaptive welding gun executing mechanism to realize integrated welding and positioning. The main body frame serves as a bearing foundation, the guide feeding mechanism drives guide rollers to stably feed through meshing transmission, the stability is improved through a surface pattern sleeve, the dynamic limiting unit forms bidirectional limiting through an adjusting screw, a cross connecting rod and a driving limiting shaft rod and is adaptive to different workpieces, and the self-centering clamping module adjusts the distance through gear transmission. A profiling clamping jaw is matched with a spring to achieve self-adaptive clamping, an anti-vibration pad protects a workpiece, a self-adaptive connecting cabin adjusts the height of a welding gun, a multi-dimensional welding gun mechanism achieves accurate alignment in the X direction and the Z direction, all parts of the device are in cooperative linkage, the welding positioning accuracy and adaptability are improved, and the welding quality of a steel structure is guaranteed.

The invention discloses non-contact type vertical lifting electroplating equipment which comprises a fixed platform, supporting columns and channel steel. The electroplating equipment is characterized in that the fixed platform, the supporting columns and the channel steel jointly form a main body frame structure of the electroplating equipment; inverted U-shaped steel is fixedly connected to the middle of the upper surface of the fixed platform; the middle of the U-shaped steel is fixedly connected with a vertically-arranged oil cylinder through a first supporting plate. The output end of the oil cylinder is fixedly connected with a connecting plate; the circuit board on the hanging tool can be vertically lifted and horizontally transferred in a non-contact manner; as the circuit board on the hanger does not contact with the roller and the wall of the electroplating bath and other objects, the problem that the subsequent electroplating effect is influenced by collision damage, roller marks and the like is avoided, in addition, the structure is compact, the electroplating continuity is good, the circuit board does not need to contact with other carriers such as a transfer frame in the transfer process, the external interference factors are few, and the production cost is low. And the electroplating effect is relatively stable, and the product quality judgment rate is relatively low.

The invention relates to the technical field of annular sealing element assembling, and discloses an annular sealing element assembling tool which comprises a main body frame, a clamping assembly is arranged at the bottom of the main body frame, an auxiliary assembly is arranged between the clamping assembly and the main body frame, a fixing assembly is arranged at the bottom of the clamping assembly, and a cleaning assembly is arranged at the top of the clamping assembly. The space between a clamping block and a sealing piece is filled with magnetorheological fluid, the magnetorheological fluid is solidified under the action of an electromagnet, deformation of the sealing piece is reduced, a first piston plate of an auxiliary assembly extrudes air to clean dust in the sealing piece, and when the clamping block is loosened, a synchronous plate drives a third piston plate to move to assist in discharging of the magnetorheological fluid; the tool solves the problems that a traditional assembling tool is prone to deformation when clamping the sealing element, impurities are difficult to clean before assembling and the like, the sealing performance of the sealing element is guaranteed, the assembling efficiency and quality are improved, and the tool is suitable for assembling operation of the annular sealing element.

The invention is suitable for the technical field of sensors, and provides a multi-dimensional force sensor which comprises an outer body frame, an inner bearing platform, a strain beam and a strain gauge. A containing hole is formed in the outer body frame, the inner bearing platform is arranged in the containing hole, and a gap is kept between the outer body frame and the inner bearing platform. The strain beams are arranged in the intervals and connected between the outer body frame and the inner bearing platform. The side edges of the strain beams extend linearly, and the number of the strain beams is three. The strain gauges are respectively attached to the first patch surface and the second patch surface of at least one strain beam, and the total number of the strain gauges attached to all the first patch surfaces and the total number of the strain gauges attached to all the second patch surfaces are not less than six, so that the number of the strain gauges is increased, and the detection precision is improved. And meanwhile, the strain gauges on the same strain beam are concentrated on the upper patch surface and the lower patch surface, so that the convenience and the efficiency of pasting the strain gauges are improved.

The invention discloses a multi-arch tunnel special-shaped mid-partition trolley which comprises a trolley body frame, an arch-shaped connecting support is arranged at the front end of the top of the trolley body frame, the arch-shaped connecting support is of an arc-shaped structure, the radian of the arch-shaped connecting support is matched with the shape of the top of a mid-partition steel reinforcement framework, and the arch-shaped connecting support is fixed to the front end of a top cross beam of the trolley body frame in a welded mode. The support is used for supporting the whole trolley to be stable and guiding the trolley to pass through a bound reinforcement cage; the formwork system of the trolley body frame comprises a top special-shaped formwork and a bottom corner formwork, the top special-shaped formwork is fixed below a top cross beam of the trolley body frame, the shape of the top special-shaped formwork is consistent with the special-shaped outline of a middle partition wall top pre-buried steel plate area, and the edge of the top special-shaped formwork is detachably connected with the top of a side large formwork of the trolley body frame through bolts. The problems that in the prior art, the construction process is low in efficiency, one-time pouring is difficult, formwork abrasion is large, and narrow space adaptability is poor are solved, and the beneficial effects of being high in construction efficiency, stable in structure, convenient and fast to operate and the like are achieved.

The invention provides a sprinkling irrigation device and a sprinkling irrigation adjusting method, and the device comprises a spanning frame which extends along a first direction; the supporting frames are arranged side by side in the first direction and fixedly connected to the lower portion of the straddle body frame; the guide wheel is rotationally installed below the supporting frame, and the advancing direction of the guide wheel is configured to be in the second direction; the adjusting device is connected to the supporting frame, the adjusting device is connected with a sprinkling irrigation head, and the adjusting device is configured to adjust the sprinkling irrigation height and the sprinkling irrigation direction of the sprinkling irrigation head; the control device is connected with the guide wheels and the adjusting device and determines the control state according to starting and stopping of the guide wheels. In the first state, the sprinkling directions of the sprinkling nozzles are controlled to at least face the first direction, and the sprinkling distances of the sprinkling nozzles intersect between the adjacent supporting frames; in the second state, the spraying direction of the sprinkling nozzles in the advancing direction of the guide wheels is controlled to be away from the advancing direction of the guide wheels. The height of the sprinkler head is adjusted by the adjusting device according to the height of crops, and effective and uniform irrigation is achieved.

The hatching tray comprises a base body frame, a plurality of transverse connecting frames and longitudinal connecting frames which are connected in a crossed mode are arranged in the base body frame, a plurality of sawteeth are arranged on the bottom edges of the transverse connecting frames and the longitudinal connecting frames at intervals, the transverse connecting frames and the longitudinal connecting frames form a plurality of egg support spaces, and egg support units are arranged in the egg support spaces. Each egg support unit comprises two arc-shaped bodies which are oppositely arranged, the tops of the arc-shaped bodies are provided with a plurality of protrusions with the inner side faces inclining outwards so as to support hatching eggs, the ends of the arc-shaped bodies are connected to the sawtooth bottom ends of the transverse connecting frames, and the outer arc faces of the arc-shaped bodies are fixed to the sawtooth bottom ends of the longitudinal connecting frames. A plurality of ventilation grooves are formed in the side face, parallel to the longitudinal connecting frame, of the base body frame, the hatching tray is good in permeability in the horizontal direction, and the hatching effect is guaranteed.

The invention discloses a polishing device and a polishing method for an inner curved surface of a steel casting, and relates to the technical field of cast steel production. The device comprises a main body frame and a polishing device, wherein the main body frame comprises a mounting table arranged on the main body frame; the stirring mechanism comprises a plurality of profiling plates which are mounted on the mounting table and used for stirring abrasive particle flow in the casting blank, and a plurality of rotating wheels are rotationally mounted on the inner wall of each profiling plate; the back pressure mechanism is used for driving the profiling plate to enter the casting blank; the rotating wheel is driven to rotate through resistance of abrasive particle flow, so that the abrasive particle flow completes switching between the distance from the abrasive particle flow to the central axis of the casting blank, and meanwhile, in the revolution process of the profiling plate, the abrasive particle flow in the casting blank is extruded up and down in a reciprocating mode through the action of a reciprocating mechanism; and the abrasive particle flow circularly polishes the inner wall of the casting blank up and down, so that the purposes of fully switching and contacting the abrasive particle flow and the inner wall of the casting blank, ensuring the polishing quality and improving the polishing efficiency are achieved.

A back exercise equipment includes a support frame seated on the bottom surface, a body frame connected to the support frame to form a support structure, a rotating part rotatably mounted to the body frame, a grip part connected to one end of the rotating part and providing a space for the user to grip, a lifting part that is connected to the other end of the rotating part, moves up and down being interlocked with the rotation of the rotating unit and provides a space in which a plate is mounted, and a seating part connected to the support frame and disposed in front of the body frame to provide a space in which the user can sit.

The invention relates to the technical field of exhaust pipe casting, and discloses an exhaust pipe casting mold moving device which comprises a vehicle body frame, self-locking universal wheels are fixedly installed on the periphery of the lower end face of the vehicle body frame, support plates are fixedly installed on the left side and the right side of the upper end face of the vehicle body frame, and a workbench is slidably installed between the support plates on the left side and the right side. The lifting mechanism is arranged in an inner cavity of the vehicle body frame; the limiting mechanism is arranged on the inner side wall of the workbench; and the cooling mechanism is arranged on the upper end face of the workbench, and the cooling mechanism is used for conducting air cooling heat dissipation on the mold plate. By arranging the lifting mechanism, corresponding adaptive adjustment can be carried out according to the height of an external working table top, mold plates can be conveyed to mold plate placing plates with different heights, meanwhile, by arranging the limiting mechanism, the stability of the mold plates during transportation can be guaranteed, and the safety performance of the whole device is greatly improved.

Provided is a roller device for transporting heavy objects, which has a lower overall height than conventional roller devices for transporting heavy objects and can keep the overall height low even when a top plate for placing heavy objects is provided. 【Solution means】 A roller device 10 for transporting heavy objects, which is used to carry and transport heavy objects, includes a thick plate-shaped main body frame 11 having a plurality of openings 11c, and a plurality of tires 12 provided across the openings. The overall height H1 from the floor surface is set to be 24 mm or more and 28 mm or less. When a top plate 13 is provided, the upper surface of the main body frame has a step dug down by 1.0 mm or more and 2.0 mm or less in a circular shape into which the top plate fits.

The invention belongs to the technical field of cable bridges, and particularly discloses a cable bridge manufacturing welding forming tool clamp which comprises an operation frame, the operation frame comprises an equipment bin and a bottom bin, the equipment bin is located above the bottom bin, supporting legs are fixedly installed at the front end of the bottom bin, and two main body frames are symmetrically arranged at the tops of the supporting legs; a bridge frame side plate is arranged on the surface of the main body frame, a driving mechanism is installed in the middle of the supporting legs and located below the main body frame, connecting rod mechanisms are installed on the two sides of the supporting legs, a swing mechanism is arranged in the equipment bin, a discharging bin is arranged above the supporting legs, and a discharging hopper is arranged above the discharging bin. A transverse rod is arranged in the discharging bin. Through mutual cooperation of the driving mechanism, the connecting rod mechanism and the swing mechanism, the cross rod can be continuously fed into a welding area between the two bridge side plates, the fixing effect on the cross rod is good, the continuous welding process is achieved, the production efficiency is improved, and the automation degree is high.

The utility model discloses an underground narrow space mine car steering platform, which belongs to the technical field of mine car steering, and comprises an underground mine tunnel, a main body frame is arranged on the top surface of the underground mine tunnel, a rotary support shaft is rotatably connected onto the main body frame, a steering table is fixedly connected to the top end of the rotary support shaft, and a steering wheel is arranged on the steering table. A push-pull mechanism is arranged on the top face of the steering table, and two movable rails are arranged on the top face of the steering table. According to the mine car steering device, when a mine car needs to be steered underground, the mine car is moved to the movable rail from the car inlet rail, the steering table, the movable rail and the mine car are pushed by the steering hydraulic cylinder to rotate around the rotary supporting shaft, and the end of the movable rail is aligned to the car outlet rail; and therefore, the function of adjusting the direction of the mine car in a narrow underground space is realized.

The invention discloses an elevator no-load energy recovery energy-saving damping device, and belongs to the technical field of elevator energy saving and damping, the elevator no-load energy recovery energy-saving damping device comprises a main body frame assembly, an elevator car structure and a self-adaptive adjusting mechanism, the elevator car structure is arranged in the main body frame assembly, and the self-adaptive adjusting mechanism is arranged on the main body frame assembly. Through the arrangement of the main body frame assembly, the elevator car structure and the self-adaptive adjusting mechanism, friction force borne by an elevator in the running process is effectively reduced, it is guaranteed that the elevator is stable in the running process, and meanwhile the service life of the elevator is prolonged. A frequency converter, a regenerated energy detection device, an energy feedback device, a super capacitor and other existing devices on the market at present can be additionally arranged at the position of a power source of the elevator, redundant energy generated when the elevator is unloaded is recycled, converted and stored, energy waste is avoided, energy saving is effectively achieved, and the cost is reduced. The problems that an elevator used in the market at present can cause energy waste during no-load operation and can generate vibration during operation are effectively solved.

The invention belongs to the technical field of ships, and particularly discloses a ship collision buffering device which comprises a main body frame, a buffering mechanism is arranged in front of the main body frame, a turnover mechanism is arranged above the main body frame and matched with the buffering mechanism, an operation bin is arranged in the main body frame, and the operation bin is connected with the turnover mechanism. And a pushing mechanism is arranged in the operation bin. By arranging the overturning mechanism and the pushing mechanism, in the daily maintenance process, maintenance personnel can quickly and efficiently complete inspection, maintenance and replacement work on the device, the maintenance cost and time are greatly reduced, and the pushing mechanism can enhance the stability of the positioning plate in the working process and ensure the stability of the buffering mechanism in the working process.

The invention discloses an assembly type power switch cabinet, and particularly relates to the technical field of power switch cabinets, the assembly type power switch cabinet comprises a cabinet body frame, a cabinet door, a top plate, a back plate, a bottom plate and two side plates, the cabinet body frame comprises an upper frame body, a lower frame body and four vertical pipes, and the four vertical pipes are distributed between the upper frame body and the lower frame body in a rectangular shape; insertion blocks are welded and fixed to the bottom of the upper frame body and the top of the lower frame body, and insertion holes for the insertion blocks to be inserted are formed in the two ends of each vertical pipe correspondingly, and the insertion blocks on the upper frame body and the insertion blocks on the lower frame body are directly inserted into the four vertical pipes correspondingly. The upper frame body, the lower frame body and the vertical pipes can be locked through the locking mechanism, and meanwhile, the two vertical pipes can be further tensioned, so that the assembling operation of the power switch cabinet can be quickly completed. Therefore, the assembly of the whole power switch cabinet is more efficient.

The embodiment of the invention provides a vehicle body frame structure and a vehicle. The vehicle body frame structure comprises a longitudinal beam main body part, the longitudinal beam main body part is connected with the longitudinal beam connecting part; in the width direction of the vehicle, the second end of the longitudinal beam outer connecting part and the second end of the longitudinal beam inner connecting part are arranged at an interval, so that the longitudinal beam outer connecting part, the longitudinal beam inner connecting part and the longitudinal beam main body part form a Y-shaped structure; the longitudinal beam outer connecting part and the longitudinal beam inner connecting part can disperse the stress of the longitudinal beam main body part, so that the collision strength of the vehicle body frame structure is improved.

A novel outdoor camping cart, comprising a cart body, the cart body comprises a body frame and a cloth bag mounted on the body frame, and the body frame comprises frame flat tubes, which are connected by flat tube connectors. The support tube is pressed into the middle connector through the riveting shaft, so that the bottom support structure is easy to assemble and disassemble. The two side walls of the bump damping connector in contact with the wheel assembly are provided with bump structures, so that the bump damping connector has a damping effect when rotating on the wheel assembly, the bump damping connector is integrally formed with plastic, and the structure is simple. The bump damping connector is connected to the wheel assembly, and it is actively steered through the left and right pull rods during steering. Especially on soft ground and grass, the steering is more labor-saving.

The utility model provides a pneumatic clamp for tank welding. The pneumatic clamp comprises a main body frame part, an outer ring fixing part and an inner ring fixing part. The main body frame part comprises a bottom plate and an outer supporting plate which are arranged at intervals, the outer supporting plate is connected with the bottom plate through a plurality of round rods, and a passing opening is formed in the middle of the outer supporting plate; the outer ring fixing part comprises an annular movable plate, a first lifting air cylinder, a clamping air cylinder and a clamping block. The inner ring fixing part comprises a second lifting air cylinder and a pneumatic finger. According to the pneumatic clamp for tank welding, efficient switching between inner wall face fixing and outer wall face fixing of a tank workpiece can be achieved. The inner wall surface of the tank body workpiece is fixed when the outer circular seam of the tank body workpiece needs to be welded, and the outer wall surface of the tank body workpiece is fixed when the inner circular seam of the tank body workpiece needs to be welded. And manpower consumption can be reduced, the production efficiency is improved, and the production process is safer.

The utility model discloses a ridable intelligent luggage case, which relates to the technical field of luggage cases and comprises a case body frame, a front shell cover and a rear shell cover, the front shell cover is mounted on the front side of the case body frame through a zipper, the rear shell cover is fixedly mounted on the rear side of the case body frame, and electric driving wheels are mounted at the bottoms of the right sides of the front shell cover and the rear shell cover. A pedal control assembly is arranged at the bottom of the box frame, a containing cavity is formed in the left side of the box frame, a steering control assembly used for controlling steering and using of the pedal control assembly is arranged in the containing cavity, and the pedal control assembly comprises a control block, a containing shell, a pedal, a sealing piece and a limiting spring. The control block is installed in the center of the bottom of the box frame through the installation block, and the containing shells are installed on the two sides of the control block. The electric driving wheel and the front wheel set which are arranged at the bottom of the luggage case can drive the luggage case to move, the telescopic control assembly in the steering control assembly can control the rotating rod and the pedal to move out at the same time, and therefore riding control can be facilitated.

A lower vehicle body frame assembly includes a frame body; a footrest plate coupled to a side of the frame body; and a rear cross beam coupled to a side of the frame body away from the footrest plate. The frame body, the footrest plate and the rear cross beam are integrally formed.

The turnover type conveying and cooling device comprises a main body frame and side frames, a control panel is installed at one end of the main body frame, a chain plate conveying belt is arranged in the main body frame, the side frames are fixedly connected to the two ends of the top of the main body frame, and a discharging structure is connected to one side of the top end of the main body frame in a turnover mode. A cooling fan is installed at the top end of the top plate, a turnover mechanism is rotationally connected to the lower portion of the inner side of the side frame, a turnover frame is connected to the lower portion of the inner side of the side frame in a turnover mode, and adjusting structures are arranged at the two ends of the top plate. Due to the fact that the lifting blocks are distributed on the outer side wall of the chain plate conveying belt, a large gap can exist between the cylinder sleeve and the chain plate conveying belt, then the cylinder sleeve gradually slides into the inner side of the overturning frame during conveying, at the moment, an electric telescopic rod is started to push a sliding block to slide along the interior of a guide groove, and a push rod gradually drives the overturning frame to overturn; at the moment, the cylinder sleeve can be overturned and cooled in the conveying process.

The invention is suitable for the technical field of sensors, and provides a multi-dimensional force sensor which comprises an outer body frame, an inner bearing platform, a strain beam and a strain gauge. A containing hole is formed in the outer body frame, and the containing hole penetrates through the first face and the second face, opposite to each other, of the outer body frame. The inner bearing platform is arranged in the containing hole, and a gap is kept between the inner bearing platform and the containing hole. The strain beam is at least partially arranged in the interval and connected between the outer body frame and the inner bearing platform, and the side edge of the strain beam extends along a straight line. The number of the strain beams is three, each strain beam is provided with at least one patch plane, and no less than six strain gauges are pasted in each patch plane. Through the arrangement, the strain gauges arranged on the same strain beam are concentrated on the same patch plane, so that the convenience and the efficiency of pasting the strain gauges are improved. And meanwhile, the strain gauges are arranged in a concentrated manner, so that the convenience of lead welding is improved.

The invention provides a welding control method for manufacturing an electric tricycle, and relates to the technical field of intelligent welding, and the welding control method comprises the following steps: determining a plurality of adaptive welding parameters according to matching of a plurality of part features; optimizing the plurality of initial welding sequences according to the thermal evaluation function and the plurality of adaptive welding parameters by taking minimization of thermal influence as an expected condition, and outputting an optimal welding sequence; and according to the optimal welding sequence, the multiple adaptive welding parameters are sequenced to generate an adaptive welding parameter sequence, and welding control is conducted according to the optimal welding sequence and the adaptive welding parameter sequence. By means of the method, the technical problems that in an existing method, due to the fact that the matched part welding sequence cannot be set according to the structural characteristics of the electro-tricycle, the phenomenon of local thermal stress concentration is likely to occur, and the welding quality of the tricycle body frame is poor can be solved, thermal stress concentration can be effectively reduced, and the welding quality is improved. And deformation and cracks in the welding process are reduced, and the welding quality and the structural stability of the vehicle body frame are remarkably improved.

The utility model discloses a full-automatic steel-plastic belt bundling unit for metal ingot stacking, and belongs to the technical field of metal material packaging. The bundling unit comprises a main body frame, a machine head assembly, a tape threading guide groove mechanism, a base, a tape reel mechanism and a tape threading guide groove. The main body frame comprises a floor frame, a cantilever frame and a machine head lifting air cylinder. The machine head assembly comprises a machine head installation frame and a machine head, and the machine head is installed in the machine head installation frame and connected with the lifting air cylinder. And the threading guide groove mechanism is provided with a telescopic guide groove which can face one side of the cantilever frame. The base is mounted at the bottoms of the floor frame and the threading guide groove mechanism, and the coiling mechanism is fixedly mounted in the middle of the floor frame. The belt penetrating guide groove is fixed to the inner side of a cantilever of the cantilever frame and the outer side of the floor frame. And a steel belt sealing guide groove is defined by the belt penetrating guide groove, the machine head assembly and the telescopic guide groove. The bundling unit is reasonable in design, compact in structure, capable of achieving full-automatic control, stable in operation, safe, reliable, low in failure rate and beneficial to improving the bundling work efficiency.

The utility model provides a primary and secondary fusion ring main unit which comprises a ring main unit body frame which is welded with a side plate, so that the overall structural strength and stability are enhanced, and the fault and maintenance cost is reduced. The mounting key holes of the connecting cross beams facilitate accurate mounting of components, and efficiency and precision are improved. The copper bar holes and the adjusting sheets of the sliding ring slide rail ensure that the copper bars are tightly connected, and electric energy loss is reduced. And the U-shaped contact of the bus connecting sheet sliding ring and the limiting rod guarantee stable electrical connection. And the circuit breaker is matched with the station switch, so that a fault circuit can be quickly cut off, and equipment is protected. A station switch and an operation button of the cabinet door outer plate are convenient to operate, and the error risk is reduced. The whole structure is convenient to overhaul and maintain and reduces workload. The cable fireproof blocking baffle can prevent fire from spreading, the rear cover plate can prevent dust and the like from entering, the cable connector ensures safe and reliable connection, the safety and reliability of the ring main unit are improved comprehensively, and the service life of the ring main unit is prolonged comprehensively.