41results about How to "Open and close smoothly" patented technology

The utility model discloses a kind of photo albums with video function, including cover, top plate, magnetic attraction piece, T type support pole, T type support foot, cover side is connected with bottom cover by cover spine, top plate is connected by folding portion between bottom cover, top plate top is equipped with mounting groove and is equipped with display screen in mounting groove, lithium battery and video storage chip are equipped in top plate, magnetic attraction piece is located in cover and top plate, photo album is innovatively integrated with display screen, not only can play the photo in video storage chip, can also play video, when user peruses photo album, not only can see familiar paper photo on inner page, can also review dynamic image moment through display screen, and photo album still retains the cover, bottom cover and inner page structure of traditional photo album, user can continue to place paper photo therein, give consideration to the emotional dependence of people to traditional photo album;While incorporating modern electronic technology, the display of dynamic image is realized, greatly enrich the use experience of viewer.

The utility model provides a circular arc door guiding limit moving structure which comprises a door pocket, top rails and a second door body, the top of the door pocket is provided with a set of top rails used for limit moving of the first door body and the second door body, and the bottom of the door pocket is provided with a set of ground rails used for limit moving of the first door body and the second door body. The top rail fixing structure comprises a door pocket, the left side and the right side of the door pocket are respectively provided with a set of fixing frames used for being connected with a top rail in a limiting mode, and the cross section of the front side view of each fixing frame is of a rectangular structure. The supporting back frame and the adjusting rail are embedded through an I-shaped structure to ensure vertical precision, when the adjusting sliding seat moves up and down along the adjusting rail, the relative position of the supporting back frame and the arc rail is fixed through bolt holes, when the door body runs, the guide wheels roll along the curved surface of the arc rail, the limiting blocks are matched with the limiting layers to prevent derailing, and the ground rail and the top rail synchronously guide the door body to move horizontally.

The utility model relates to the technical field of machining auxiliary equipment, in particular to a shaft part nitriding tool which comprises a nitriding furnace main body, a first air cylinder is arranged on one side of the nitriding furnace main body, a top cover is arranged above the nitriding furnace main body, and a fixing plate is fixedly installed on a side edge plate body of the top cover. The tail end of a telescopic shaft of the first air cylinder is detachably installed on the fixing plate, a driving motor is fixedly installed at the center of the top face of the top cover, a rectangular rod is installed at the tail end of an output shaft of the driving motor, a second air cylinder is arranged at the bottom of the nitriding furnace body, and a telescopic shaft of the second air cylinder penetrates into the nitriding furnace body and is detachably provided with a supporting base. And a convex column is rotationally connected to the center position of the supporting base, a mesh cylinder is installed at the top end of the convex column, a center column is fixedly installed at the center position of the mesh cylinder, a rectangular insertion hole is formed in the center column, and the rectangular rod is matched with the rectangular insertion hole in an inserted mode. The dynamic nitriding device is convenient for dynamic nitriding operation and is beneficial to improving nitriding quality.

This utility model relates to a sliding cover type FPC connector, including a base and a slider slidably connected to the base. The base has sliding grooves extending along the insertion direction on both sides. The slider has guide arms that slidably engage with the sliding grooves. The groove walls have recesses, and elastic arms are installed within these recesses. A locking block is located at the free end of the elastic arm, and a corresponding slot is provided on the guide arm. A slot is located in the middle of the base along its width direction. An insert plate extends into the slot on the slider. Limiting grooves are spaced apart within the slot, and terminals are installed within these grooves. Through the design of the locking block at the free end of the elastic arm engaging with the inclined surface of the guide arm's slot, when the slider is pulled, the inclined surface of the slot pushes the locking block, causing the elastic arm to deform, and the locking block naturally exits the slot to unlock. When the slider is pushed to the locked position, the elastic arm automatically resets, and the locking block precisely engages with the slot to form a stable lock, effectively preventing accidental sliding of the slider.

The utility model discloses a kind of angle type conical energy dissipation valves, comprising: valve body (1), valve stem (2), conical valve core (3), conical valve seat (4), water inlet end (5) and water outlet end (6), the water outlet end is equipped with the water flow impact cylinder (7) of conical valve seat fixed connection and with water outlet end inner wall gap cooperation, the bottom of the water flow impact cylinder is equipped with the conical energy dissipation cylinder (8) of upper big and lower small of water outlet end inner wall fixed connection.The utility model has the beneficial effect that a threaded valve stem is connected with cone, the up and down movement of valve stem drives the movement of conical valve core to adjust flow, and the annular water flow is almost not shaken due to vertical downward, with long service life;When water flow passes through conical valve core through guide plate, it forms annular flow cross-section impact water flow impact cylinder, and conical energy dissipation cylinder together to achieve energy dissipation effect.

This utility model discloses a cable laying track robot, including a main body. Track walking mechanisms are respectively installed at both ends of the bottom of the main body. A rotary motor is installed on the upper part of the main body. The output shaft of the rotary motor is connected to a supporting base plate. The outer end of the supporting base plate extends outward from the main body. A first electric telescopic rod is installed on the supporting base plate. One end of the first electric telescopic rod located inside the supporting base plate is connected to a telescopic drive motor, and the other end is connected to a gripping assembly through a gripping drive mechanism. This utility model ensures stable movement on complex tracks and avoids the risk of derailment by combining an anti-detachment plate with a magnet. The smooth opening and closing of the gripping plate is achieved through the linkage of pulleys, a U-shaped push rod, and a drive slide. Combined with a semi-circular gripping groove and an anti-slip pad, it can adapt to cables of different diameters, providing uniform gripping force and anti-slip properties.

The utility model discloses a kind of tobacco leaf boxing packing workstations, including rack, tobacco frame conveying device, tobacco frame turnover mechanism, packaging box conveying device and tobacco leaf compaction mechanism. Tobacco frame conveying device is located on the upper portion of rack, for input full load tobacco frame and output empty tobacco frame, it includes interval arrangement and form the input of blanking port, output conveyor belt. Tobacco frame turnover mechanism is equipped with two, respectively corresponding input conveyor belt and blanking port, each turnover mechanism includes by the drive swing arm driven turnover frame, and tobacco frame clamping release mechanism, cover plate and cover plate turnover mechanism installed on it, reliable clamping and turnover tobacco frame are carried out automatic unloading. Packaging box conveying device is located in the lower portion of rack to receive tobacco leaf. Tobacco leaf compaction mechanism is used to compact tobacco leaf in box. The utility model realizes the full-automatic, continuous transfer and packaging of tobacco leaf from tobacco frame to packaging box, greatly improves operation efficiency, reduces labor intensity.

The application provides a foldable electronic device and a screen assembly. The electronic device comprises a screen, a rotating shaft assembly, a first housing, a second housing and an elastic assembly. The material of the elastic part of the elastic assembly is an elastic material or a non-Newtonian fluid material. The material of the supporting part of the elastic assembly is a rigid material. The electronic device has an open state and a closed state. When the electronic device is in the open state, the elastic assembly is flat. The screen, the elastic assembly and the rotating shaft assembly are stacked in the thickness direction of the electronic device. The elastic part and the supporting part are stacked in the thickness direction of the electronic device. The first part of the elastic assembly overlaps the first connecting part of the rotating shaft assembly, and the second part overlaps the second connecting part of the rotating shaft assembly. When the electronic device is in the closed state, the elastic assembly is bent, the first part of the elastic assembly overlaps the first connecting part, and the second part overlaps the second connecting part. The screen drop reliability of the electronic device is high, and the rebound force is small.

The utility model discloses a delivery door of a recycling bin, which relates to the technical field of garbage recycling and comprises a first door body, a second door body, a driving device, an anti-pinch device and a guide mechanism, the first door body is rotatably connected with the second door body, the first door body is provided with the anti-pinch device, and the second door body is provided with the guide mechanism. The driving device is installed on the side wall of the recycling box and connected with the anti-pinch device, and the lower end of the second door body is connected with the side wall of the recycling box through a guide mechanism. According to the delivery door, the first door body and the second door body are arranged, and the first door body and the second door body can rotate relative to each other, so that the electric driving device with a short stroke can be selected to achieve a large opening and closing stroke, and compared with a long electric driving device consistent with the opening and closing stroke of the delivery door in a traditional design, the delivery door has the advantages of being simple in structure and convenient to use. According to the utility model, the purchase cost of the electric driving device is reduced.

The utility model relates to a novel automobile forecabin gutter channel in the field of automobile accessories. The novel automobile forecabin gutter channel comprises a gutter channel body, a left air supporting rod installation support, a right air supporting rod installation support and an engine controller support. The gutter channel body is fixedly connected with a vehicle body in a screwed mode, and the side face is connected with a vehicle fender in a screwed mode. The two left air supporting rod mounting brackets are respectively welded and fixed at preset positions on the left side of the gutter channel main body; the two right pneumatic support rod mounting brackets are respectively welded and fixed at preset positions on the right side of the gutter channel main body; the engine controller mounting bracket is welded and fixed at a preset position in the middle of the gutter channel; the novel automobile forecabin gutter channel has the advantages that integrated design is achieved, and the narrow space of a forecabin can be effectively utilized.

The utility model discloses a quick cooling device for a desktop injection molding machine mold, which comprises an upper metal cooling plate, a first containing cavity is arranged on one side of the upper metal cooling plate, a material injection port is arranged on the other side of the upper metal cooling plate, a first channel assembly is arranged in the upper metal cooling plate and comprises a plurality of first channels arranged at intervals, and the first channels horizontally penetrate through the upper metal cooling plate; the first channel located at the head end communicates with a first water inlet pipe, the first channel located at the tail end communicates with a first water outlet pipe, and a first connecting hose communicates between every two adjacent first channels. A second containing cavity is formed in one side of the lower metal cooling plate, a second channel assembly is arranged in the lower metal cooling plate and comprises a plurality of second channels arranged at intervals, the second channel located at the head end communicates with a second water inlet pipe, and the second channel located at the tail end communicates with a second water outlet pipe; and a second connecting hose is communicated between the adjacent second channels. The utility model has the advantages of simple processing, smooth opening and closing, lower cost and labor-hour saving.

The utility model relates to the technical field of glasses, and discloses a track type bayonet screw-free elastic glasses hinge structure, which comprises an end piece, a glasses leg and an end piece inner frame, the end piece and the glasses leg are made of titanium metal, the end piece inner frame is made of phosphor copper metal, and the end piece, the glasses leg and the end piece inner frame are in screw-free connection through a track structure. The bottom of the end piece and the bottom of the end piece inner frame are provided with notches corresponding in position, the necks of the glasses legs on the side faces of the glasses legs are vertically installed from the bottoms to complete connection, and the hidden track grooves with the radian in the top of the end piece inner frame and the convex grooves with the radian in the front ends of the glasses legs can be tightly combined to ensure that the glasses legs are stably opened and closed in the end piece. The top of each glasses leg is provided with a through forked position, so that the glasses legs have an opening and closing elastic function, can elastically expand outwards by 12 degrees in a 0-degree state, improve the wearing comfort and prevent falling off, the forked positions are tightly closed to form a small square to enhance the stability when swinging to 45 degrees, and the forked positions are opened to return to a state of being matched with a large square track in an end piece when swinging to 90 degrees to form a 90-degree elastic effect.

This invention discloses a vibration-damping check valve, belonging to the field of check valve technology, which solves the problem of large opening and closing vibration in traditional swing check valves. The invention includes a valve body, a main valve cover, an inlet chamber, an outlet chamber, a valve seat, a rocker arm, and a valve disc. A liftable baffle is provided on the left side of the valve seat, and a media-driven drive structure is installed on the upper left of the valve body. The drive structure includes a drive chamber, a drive plate, an anti-rotation drive rod, a drive sleeve with a helical drive groove, a gear pair, and a screw. The linear motion of the drive rod is converted into rotational motion by the drive sleeve, driving the baffle to rise and fall smoothly. A buffer plate is hinged to the lower part of the baffle, forming a buffer mechanism with a buffer cone and a buffer spring. An overflow check valve is provided at the upper end of the valve seat, connecting the closed chamber and the outlet chamber. This invention, through baffle flow control, multi-stage buffering, and overflow pressure relief, slows down the opening and closing speed of the valve disc, eliminates vibration and water hammer, prevents loosening of connecting parts, improves sealing reliability and service life, and is suitable for backflow prevention scenarios in large-diameter, high-pressure pipelines.

This utility model discloses a medicine storage cup lid and a water cup, belonging to the technical field of water cups. The medicine storage cup lid includes a lid assembly, a medicine compartment, and a driving mechanism. The lid assembly contains a medicine storage compartment, which is divided into several medicine storage spaces by the medicine compartment. The assembly has a medicine outlet and a compartment cover. The driving mechanism adopts a single-point stepping drive; pressing a button drives a ratchet tooth to engage with a ratchet, causing the medicine compartment to rotate a predetermined angle each time, aligning each medicine storage space sequentially with the medicine outlet, thus achieving quantitative dispensing of medicine in multiple doses. This water cup, including the aforementioned lid and cup body, organically combines medicine storage and drinking water, offering advantages such as convenient portability, easy medication administration, and prevention of missed or incorrect administration, making it particularly suitable for use when traveling.

The utility model discloses a full mesh rotor type line roots blower, relate to roots blower technical field, and the utility model discloses a frame, the top of frame is equipped with roots blower main part through bolt mounting, and the lower part of roots blower main part is equipped with protection mechanism, is used for the quick blow -drying of the condensed water of lower part, and protection mechanism includes: drying assembly includes two mutually cooperative use's protection cover of rotation installation in the lower part of roots blower main part, and the application is through setting protection cover, and then through two ventilating fans produce convection gas, and the outside air is inhaled to one side, and the other side discharges the moisture in the cover, forms high -speed drying airflow in the protection cover, and the inhaled airflow first passes through drying board effective adsorption moisture, ensures the dry air of blowing to the surface of casing, so that can be targeted after shutdown then speed up evaporation condensed water, and then can avoid the equipment under the long -term operation, the corrosion of the equipment lower part due to the condensed water of often gathering lower part.

This invention relates to the field of fire protection equipment technology, and in particular to a pressurized piston-type deluge alarm valve. Its structure includes an upper valve body and a lower valve body, and a piston chamber fixed between the upper and lower valve bodies. A piston plate is provided inside the piston chamber, and a piston rod is slidably connected to the top of the piston plate. A valve disc for controlling the opening and closing of the deluge valve is located at the top of the piston rod. A scraping assembly for scraping deposits adhering to the inner wall of the piston chamber is located at the bottom of the piston plate. This invention, by setting a scraping assembly at the bottom of the piston plate and combining it with a first driving mechanism, enables the scraping assembly to rotate synchronously with the up-and-down movement of the piston plate. This allows the scraper blade to automatically scrape the inner wall of the piston chamber circumferentially during each opening and closing of the valve, automatically removing deposits such as scale and rust adhering to the inner wall. This prevents deposit accumulation from causing piston plate jamming, ensures smooth piston plate movement, and guarantees normal opening and closing of the valve disc.

The utility model relates to the technical field of container door body structures, in particular to a vertical three-dimensional container side-by-side combination system. The sliding door comprises a door body structure which is arranged in an up-down opposite opening and closing mode, a driving mechanism and a guiding mechanism are arranged in the middle of the door body structure, and the driving mechanism comprises a driving motor, a transmission shaft and a fixing base; the door body structure is driven by the driving motor to open and close relative to the frame body; the guide mechanism comprises a guide rail and pulleys arranged in the guide rail, a clamping groove matched with the lifting rod of the frame body is reserved in the guide rail, the pulleys are arranged on the inner wall of the clamping groove at intervals, and the pulleys are tightly attached to the lifting rod. According to the utility model, the driving mechanism with the synchronous belt II is additionally arranged on the door body structure, so that the driving power transmission of the large-size door body is stable; meanwhile, a guide mechanism with a pulley is additionally arranged on the back face of the door body, deviation of the door body during vertical opening and closing is avoided, movement is not affected during guiding, opening and closing are smoother, stress is more uniform, and the service life of the guide mechanism is prolonged.

The utility model relates to the technical field of quick-release hanging basket, disclose a quick-release helicopter hanging rescue hanging basket, including support mechanism, the top of support mechanism is provided with the hoisting mechanism, the inside side of support mechanism is provided with the protection door mechanism, the bottom fixedly connected with base of support mechanism, the top fixedly connected with support frame of base, the front and rear end rotationally connected with bolt of support frame, the top rotationally connected with support column of bolt, the rear end fixedly connected with lower guardrail of support column, the top fixedly connected with stud bolt of support column, the top slidingly connected with sliding block of stud bolt, the rear end fixedly connected with middle guardrail of sliding block, the top fixedly connected with upper support structure of sliding block, the top fixedly connected with upper guardrail of upper support structure, the utility model discloses can be stable hoisting through the hoisting mechanism, and personnel or material can go in and out the hanging basket simultaneously with the protection door mechanism, can carry out the quick rescue under various conditions.

The utility model discloses a curtain wall ventilator general switch base relates to curtain wall ventilator general switch base technical field. This curtain wall ventilator general switch base, including aluminium alloy main part and ventilation mechanism, aluminium alloy main part's front and back side inner wall fixed mounting has the base, and ventilation mechanism sets up on the base, and ventilation mechanism includes drive assembly, limiting component and linkage component, and drive assembly includes gear, toothed plate and rotation axis, and toothed plate's top fixed mounting has rotation axis, and gear and toothed plate meshed installation, and limiting component includes bottom box, positioning bead card and stainless steel pearl. Through the cooperation of drive assembly, limiting component and linkage component, gear transmission system can provide more stable and accurate motion control, can accurately drive toothed plate, guarantee the opening or close position accuracy of air door board, can rapidly adjust the open -close state of air door board, guarantee that ventilator can be in time start -up or close when needing, thereby ensure the ventilation effect of ventilator.

The utility model provides a linkage opening and closing mechanism of a high-voltage switch, which relates to the technical field of switch control of high-voltage electrical equipment, and comprises a mounting rack for fixing the equipment, the front side of the mounting rack is fixedly connected with a power mechanism for opening and closing, and the right side of the power mechanism is movably connected with a connecting structure for connecting the opening and closing; the rear side of the connecting structure is fixedly connected with a switching-on and switching-off structure, the two sides of the switching-on and switching-off structure are movably connected with three groups of wiring terminals, and the bottoms of the wiring terminals are fixedly connected with the top of the mounting frame. By arranging the mounting rack, the power mechanism, the connecting structure and the opening and closing structure, the problems of arc damage, complex mechanical interlocking structure and high failure rate caused by asynchronous actions of the traditional opening and closing mechanism of the existing switch are solved.

The utility model relates to the field of hinge discloses a small size embedded hinge, including two sleeves, two sleeve all weld in the right side of female hinge, the inner wall of sleeve inserts with central axis, the right side of female hinge sets up sub hinge, the left side of sub hinge is welded with a plurality of connecting barrels, the connecting barrel corresponds with sleeve, the connecting barrel is equipped in the outer wall of central axis, two connecting frames are welded on the sub hinge, one end of connecting frame is welded with support cylinder, the support cylinder corresponds with connecting barrel, the support cylinder is equipped in the outer wall of central axis, in the utility model, through the cooperation of connecting frame, support cylinder and X-shaped support frame, can disperse stress through the principle of triangular truss when sub hinge bears axial load, forms multidirectional constraint when sub hinge is loaded, effectively prevents the bending and torsional deformation of sub hinge and connecting barrel under stress, and simultaneously spreads local stress to the whole of connecting frame.

The utility model provides a kind of wiring processing device inside switch machine, including workbench, tooling mould plate, wire stripping machine, winding machine, automatic soldering machine and smoke purifier.Workbench is equipped with collection box, and blanking opening is equipped with through collection box below wire stripping machine;Collection box contains shell and baffle, baffle is hinged in shell lower end, and both sides are equipped with the side plate with guide boss, and with shell arc-shaped guide slot sliding fit;Baffle bottom surface fixed pull rod, and shell side is equipped with transparent observation window.Smoke purifier is vertically fixed on soldering machine above by hanging plate.Advantages are: 1) realize wire stripping waste automatic collection by blanking opening-collection box vertical waste channel, and guide mechanism guarantees that baffle opens and closes stably;2) smoke purifier near-field layout eliminates welding fume pollution;3) modularization integration reduces operation turnaround distance, supporting member and drawer enhance equipment stability and storage convenience, significantly improve wiring processing efficiency and environmental protection.

This invention discloses a vibration-damping check valve, belonging to the field of check valve technology, which solves the problem of large opening and closing vibration in traditional swing check valves. The invention includes a valve body, a main valve cover, an inlet chamber, an outlet chamber, a valve seat, a rocker arm, and a valve disc. A liftable baffle is provided on the left side of the valve seat, and a media-driven drive structure is installed on the upper left of the valve body. The drive structure includes a drive chamber, a drive plate, an anti-rotation drive rod, a drive sleeve with a helical drive groove, a gear pair, and a screw. The linear motion of the drive rod is converted into rotational motion by the drive sleeve, driving the baffle to rise and fall smoothly. A buffer plate is hinged to the lower part of the baffle, forming a buffer mechanism with a buffer cone and a buffer spring. An overflow check valve is provided at the upper end of the valve seat, connecting the closed chamber and the outlet chamber. This invention, through baffle flow control, multi-stage buffering, and overflow pressure relief, slows down the opening and closing speed of the valve disc, eliminates vibration and water hammer, prevents loosening of connecting parts, improves sealing reliability and service life, and is suitable for backflow prevention scenarios in large-diameter, high-pressure pipelines.

The utility model discloses a hand -operated formula window opener belongs to window opener technical field. This kind of hand -operated formula window opener, including window body and window opening subassembly, window opening subassembly sets up at the outside of window body, and window body includes window frame, and the outer wall of window frame is equipped with the outer frame, and the inside mounting of outer frame has glass board, and the hinge articulates through between window frame and outer frame, and window opening subassembly includes a pair of mounting seat, and a pair of mounting seat all set up in the opposite side of window frame with outer frame, and the square tube is equipped with between a pair of mounting seat, and the square tube is all equipped with a pair of mounting plate in the outside close to both ends, and the rotatory joint of a pair of mounting plate has first corner box, and the bottom of first corner box installs the outer tube body, and the inner wall both sides of outer tube body all are seted up with the sliding slot, and the sliding joint of a pair of sliding slots has telescopic handle, and the inside screw thread connection of telescopic handle has screw rod, and the rotatory joint of screw rod one end with the inner top surface of outer tube body, and telescopic handle is at the end away from first corner box and is penetrated outer tube body to install the connecting piece, and the connecting piece is connected with glass board.

The invention discloses a novel monitoring bed, and belongs to the technical field of medical instruments, the novel monitoring bed comprises a bed board frame, a turning mechanism is arranged above the bed board frame, a mattress is arranged above the turning mechanism, a defecation opening is formed in the mattress, a plugging mechanism is arranged below the defecation opening, and a bedpan lifting mechanism is arranged below the plugging mechanism; a headboard and a footboard are arranged on the front side and the rear side of the bed board frame respectively, liftable protective fences are arranged on the left side and the right side of the bed board frame, a bottom frame is arranged below the bed board frame, universal wheels are arranged on the bottom frame, and a height adjusting mechanism is arranged between the bed board frame and the bottom frame. The turning-over mechanism, the pressure sore prevention mattress system, the plugging mechanism, the bedpan lifting mechanism, the liftable protective guard, the height adjusting mechanism and the like are organically integrated in the unified bed body frame, and all the mechanisms can work independently or in a linkage mode. And an integrated nursing solution of covering body position change, pressure sore prevention, excretion treatment, safety guarantee and height adjustment is formed.

The application relates to the technical field of first-aid kits, in particular to a first-aid kit for a critical care medicine department, which comprises a shell, a cover plate installed on the shell, a placing table for placing ampoules arranged in the shell, a pull-out plate for placing medical instruments arranged below the placing table and a compartment arranged in the shell, at least one partition plate is arranged in the compartment, at least one sliding rail is arranged on the side wall of the compartment, and a sliding groove matched with the sliding rail is arranged on each partition plate. Therefore, the technical problems of low taking and placing efficiency, single storage chamber and insufficient expansion and adaptability of the first-aid kit can be solved by the first-aid kit for the critical care medicine department.

The utility model provides a kind of anti-icing gate device, it is related to hydraulic engineering gate technical field, including: building, the upper position of building is equipped with a support frame, the middle position of support frame is equipped with a stable sleeve, the inner side position of stable sleeve is equipped with a group of driving mechanism, a vertical lifting rod is inserted between stable sleeve and driving mechanism, the upper position of gate body is provided with two symmetrical distribution stable grooves.In the side of gate, a sealing washer and a sealing plate are provided, the sealing washer and the sealing plate form a double-sealing structure to seal one side of the gate body, block the water from seeping into the beam grid of the gate, fundamentally reduce the risk of icing, at the same time, improve the overall waterproof performance of the gate, solve the problem that the beam grid on one side of the gate body is easy to freeze.

The invention relates to an isolating switch opening and closing speed preset speed regulation system, an isolating switch comprises a base, post insulators distributed in parallel are mounted on the base, and a moving contact and a static contact finger which are matched with each other are mounted at the upper ends of the post insulators; the moving contact is driven by an operating mechanism installed on the pedestal to be close to or far away from the static contact finger so as to realize opening and closing. And the output end of the controller is connected with a motor speed regulator, and the motor speed regulator is connected with the motor of the operating mechanism and is used for regulating the rotating speed of the motor so as to realize the regulation of the opening and closing speed. The speed regulating system adjusts the rotating speed of the motor according to a difference curve between the elastic force of the spring and the gravity of the conductive part when the isolating switch is designed, so that the opening and closing speed of the isolating switch is controlled, and the opening and closing of the isolating switch are stable.

The utility model relates to the technical field of feed blanking devices, and discloses a feed blanking device for pig raising feeding, which comprises a feed storage tank and a lower trough, the feed storage tank is communicated with a discharge pipe through a conical barrel, the lower part of the discharge pipe is coaxially connected with a thick barrel, and a ball float valve is arranged in the thick barrel as a valve to control feed circulation; the inner diameter of the thick cylinder and the outer diameter of the floating ball valve are both larger than that of the discharging pipe, the outer diameter of the floating ball valve is smaller than that of the thick cylinder, a feed passing gap is reserved between the lower bottom face of the thick cylinder and the inner bottom face of the trough, and automatic opening and closing are achieved through buoyancy of the floating ball valve. The floating ball valve is of a composite structure of an inner supporting hollow ball and a peripheral rubber ball, and a hollow interlayer is formed between the two. Feed is guided to flow smoothly through the conical barrel, the flow speed is reduced through the flaring structure of the thick barrel, a moving space is provided for the floating ball, sensitivity and sealing performance are improved through the double-material design of the floating ball valve, discharging can be automatically adjusted according to the liquid level of the trough, and manual intervention is reduced.