219results about How to "Increase the gap" patented technology

The heat bridge breaking structure comprises a heat preservation sandwich layer located in the middle, an outer acanthus and an inner acanthus are arranged on the two sides of the heat preservation sandwich layer respectively, and the heat preservation sandwich layer is connected with the outer acanthus and the inner acanthus through a plurality of connecting assemblies for supporting the outer acanthus and the inner acanthus. According to the heat insulation bridge structure of the sandwich heat insulation external wall panel and the construction technology, the outer acanthus, the heat insulation sandwich layer and the inner acanthus are matched to form a formwork with an inner cavity and an outer cavity, concrete is poured into the cavities to form an outer acanthus wall and an inner acanthus wall, the outer acanthus and the inner acanthus are supported through the connecting assemblies, and the stable cavities are formed; the possibility that gaps between the heat preservation sandwich layers are increased or dislocation occurs due to the fact that the heat preservation sandwich layers are disturbed by concrete is reduced, and then the possibility that linear heat bridges are formed due to the fact that the effective thickness of the dislocation part heat preservation plate is reduced is reduced.

The ventilation and heat dissipation structure of the dry type transformer comprises a plurality of heat dissipation channels used for heat dissipation of a plurality of pairs of vertical semiconductor chilling plates, each heat dissipation channel is arranged in an annular air channel and surrounds a pair of vertical semiconductor chilling plates, and the heat dissipation channels extend in the direction of the central axis to form channels with the upper ends and the lower ends open. Each heat dissipation channel comprises an insulating plate, a plurality of guide plates and two side plates; one ends of the guide plates are uniformly and fixedly arranged on the two sides of the insulating plate at intervals in the axis direction, the other ends of the guide plates incline upwards in the wind direction and are close to but not in contact with the semiconductor chilling plate, and a first gap for airflow to pass through is reserved; and an exhaust fan is further included and communicates with the openings in the upper ends of the multiple heat dissipation channels. According to the utility model, the heat dissipation channels are arranged on each pair of vertical semiconductor chilling plates, and the guide plates inclined along the wind direction are arranged in the heat dissipation channels, so that air is promoted to circulate along the hot surfaces of the semiconductor chilling plates, and airflow blows to the hot surfaces, thereby improving the heat dissipation effect.

The invention relates to a recoverable unlocking bracket for a large-aperture space remote sensing camera, which is characterized in that in a locking state, two explosive bolts respectively penetrate through central holes of an upper pressing block and a conical block and then are connected with an upper section and a lower section of a threaded connecting cylinder, and four wedge blocks are uniformly distributed along the periphery of the threaded connecting cylinder; two wedge-shaped grooves in the wedge block are matched with a first conical boss of the upper support and a second conical boss of the lower support respectively, an annular spring is arranged in a rectangular groove, a plate spring penetrates through a through hole of the wedge block and a rectangular hole of the upper pressing block, then the lower end of the plate spring is hooked on the annular groove of the lower support, and the upper end of the plate spring is fixed to the upper pressing block. And the explosive bolt is detonated and unlocked, the wedge-shaped groove is separated from the conical boss, the conical block is withdrawn, and the four wedge blocks are recovered together and clamp the threaded connecting cylinder. After unlocking, all the free structural parts in the support are restrained and recycled, the risk that the support is stuck due to irregular movement of the free structural parts or the free structural parts move to the outside of the support to become redundant objects is eliminated, and meanwhile the requirement for the large movement distance after the support is unlocked can be met.

The present invention discloses a semiconductor device and a manufacturing and packaging method thereof, including a chip, a lead frame and a package body, wherein the lead frame includes a chip seat and pins, and also includes a guide lead, wherein the guide lead is connected to the chip and the pins respectively, and the middle section of the guide lead protrudes out of the chip, and the package body is injection molded to cover the chip and the lead frame, and the pin part protrudes out of the package body, and a pouring port is arranged on the package body, and the pouring port is arranged on a side close to the guide lead. The present invention arranges the pouring port on a side close to the guide lead, so that the package body can flow along the direction of the guide lead during injection molding, and effectively eliminates the pores and weld lines under the guide lead; the middle section of the guide lead protrudes out of the chip, so that the gap between the guide lead and the chip, and between the guide lead and the lead frame is expanded, so that the package body is smoothly filled in; the chip delamination, package body colloid cracking, water vapor intrusion, ion pollution and other problems are effectively prevented, and the service life of the semiconductor device is improved.

The utility model discloses a grinding wheel cover connecting mechanism arranged on an angle grinder, which comprises a mounting plate and a ring sleeve, one end of a rotating shaft extending into a grinding wheel cover is fixedly provided with a saw grinding sheet, and the mounting plate is provided with a groove connecting part around the ring sleeve. A protruding part extending out of the surface of the inner wall of the mounting plate is arranged at the position, corresponding to the groove connecting part, of the inner wall of the mounting plate, a wear-resisting distance increasing cushion cover is arranged between the protruding part and the saw grinding piece, and the outer circumference of the saw grinding piece extends out of the edge of the protruding part; the groove connecting part is arranged on the outer wall of the mounting plate on the side wall of the grinding wheel cover, the end part of the transmission mechanism is fixed on the groove connecting part through the ring sleeve, the protruding part on the inner wall of the mounting plate extends out of the back surface of the groove connecting part, and the protruding part extends out of the outer circumference of the saw grinding sheet; the gap between the saw grinding piece and the inner wall of the mounting plate is increased through the protruding part, and the edge wiping phenomenon of the saw grinding piece is avoided under the condition that the power of the saw grinding piece is not increased.

The invention discloses a CACC fleet cooperative lane changing control method in a mixed traffic flow environment. The method comprises the following steps: determining an initial lane changing gap of a target lane and a target network connection automatic driving vehicle cooperatively controlled by a CACC fleet; obtaining vehicle motion state information of the CACC fleet, the target networked autonomous vehicle and a vehicle in front of the target networked autonomous vehicle; constructing a longitudinal control method, generating lane changing gaps one by one through cooperative deceleration of the vehicles, and controlling the vehicles to complete lane changing by using a transverse control algorithm; and after the lane change of the CACC motorcade is finished, the longitudinal control method is used again to control the vehicle to cruise at the expected distance. According to the method, when the vehicle gap of the target lane does not meet the lane changing condition, lane changing of the CACC motorcade is effectively achieved through cooperative control over the vehicles.

The utility model relates to the technical field of management systems, in particular to a parallel battery management system. In order to solve the problems that the available capacity of a battery of a system capable of carrying out heat dissipation treatment on the battery is reduced in a low-temperature environment, so that the battery cannot provide the electric quantity which is the same as that at a normal temperature, and the performance of the battery is reduced, the following technical scheme is provided: the battery heat dissipation device comprises a box body with an opening in the top, and five groups of U-shaped mounting frames are arranged in the box body; batteries are mounted in the five groups of mounting racks, the middle group of mounting racks is fixedly connected into the box body, and the other four groups of mounting racks are slidably connected into the box body; the connecting assembly is used for connecting the five groups of mounting frames; and the adjusting mechanism is matched with the connecting assembly to synchronously adjust the positions of the four groups of mounting frames which are arranged in a sliding manner. According to the utility model, the battery can be maintained in a proper working temperature range, the safe and stable operation of the battery is ensured, and the working performance and the service life of the battery are ensured at the same time.

This invention discloses a power supply device for safety engineering equipment on construction sites, relating to the field of power supply devices. It includes a power cabinet and multiple batteries. The power cabinet is cylindrical with a notch on one side, where a side filter is installed. It should be noted that, in this embodiment, when the batteries are in use, the radial layout effectively increases the gap between batteries while ensuring the number of batteries is sufficient, increasing airflow and improving heat dissipation. A combination of central heat dissipation and rotating lateral heat dissipation ensures uniform heat dissipation for each battery, eliminating localized hotspots, improving heat dissipation efficiency, extending battery life, and reducing maintenance costs and replacement frequency. Furthermore, the sliding filter plate can slide open, directly exposing the batteries to further enhance heat dissipation. When not dissipating heat, it closes, providing ample protection against dust, moisture, and impact.

The utility model belongs to fresh noodle production equipment field, concretely relates to a kind of anti-adhesion mechanism for fresh noodle processing, be set to noodle press, the noodle press includes the noodle cutting pair roller of installation by means of rack, the anti-adhesion mechanism includes shunt plate, first conveyor belt and second conveyor belt, the shunt plate, first conveyor belt and second conveyor belt are sequentially arranged in the height direction below noodle cutting pair roller and are connected with rack, the upper end of the shunt plate is arranged between the front noodle outlet end, rear noodle outlet end of noodle cutting pair roller, the front output end, rear output end of shunt plate are respectively connected with first conveyor belt, second conveyor belt, the conveying direction of the first conveyor belt and second conveyor belt is opposite, the first powder box of being located above first conveyor belt, the second powder box of being located above second conveyor belt are set on the rack, and the anti-adhesion mechanism can make dry powder fully wrap the surface of noodle, avoid the adhesion between noodle.

The utility model discloses a sprouting incubator for soybean planting, which relates to the technical field of soybean planting and comprises a base, a connecting shell is fixedly mounted at the upper end of the outer wall of the base, two bilaterally symmetrical rotating rods are rotatably arranged in the connecting shell, and placing frames are fixedly mounted on the side walls of the rotating rods in a linear arrangement manner. According to the bean seed cultivation device, bean seeds are placed and cultivated through the two semicircular cultivation pots in each placing frame, and all the placing frames on the left side and the right side are driven to rotate at the same time through rotation of the two rotating shafts; according to the device, water mist can be evenly sprayed to bean seeds in the semicircular cultivation pots on each rotating shaft, the bean seeds in the semicircular cultivation pots are automatically watered, meanwhile, a plurality of placing frames are arranged on each rotating rod, more bean seeds can be cultivated at a time, and the device is convenient to use. The number of bean sprouts cultivated by the device in unit area is increased, and the space utilization rate of the device is increased.

The invention relates to a surface-mounted magnetic steel assembly guide tool, and relates to the technical field of magnetic steel assembly equipment.The surface-mounted magnetic steel assembly guide tool comprises a guide rod and two side plates, the guide rod is located between the two side plates, the distance between the two side plates is not smaller than the width of magnetic steel, and the upper end faces of the side plates are located on the sides, away from the lower end face of the guide rod, of the upper end face of the guide rod; one end of the guide rod is provided with an inclined plane, the guide rod is fixedly provided with a supporting rod at the upper end of the inclined plane, the upper end face of the supporting rod is flush with the upper end face of the guide rod, and the lower end face of the supporting rod and the lower end of the side plate are located between the upper end face and the lower end face of the guide rod; the guide rod, the supporting rod and the two side plates are all made of non-magnetic or weak magnetic materials. The device has the effects of reducing the suction force of the magnetic steel to the surface of the rotor, preventing the magnetic steel from being held unstably and reducing the risk of magnetic steel breakage.

The invention relates to the technical field of wind power blade mold positioning, and discloses a wind power blade mold clamping mechanism with an adjustable adaptation range and a clamping method.The wind power blade mold clamping mechanism comprises a blade mold body, the blade mold body is fixedly installed at the top of a positioning clamping support through bolts, and an outer side positioning cavity is further fixed to the side wall of the bottom of the blade mold body; the blade mold further comprises auxiliary positioning blocks which are installed on the inner side wall of the blade mold body at equal intervals in an embedded mode, an installation support and a positioning support are fixed in an outer side positioning cavity under the auxiliary positioning blocks, a telescopic rod piece is rotationally connected into the installation support, and the tail end of an output shaft of the telescopic rod piece is fixed to the center of the back face of each auxiliary positioning block. Meanwhile, the positioning bracket penetrates through the back surface of the auxiliary positioning block. Positioning of the blade mold and clamping and positioning of the demolding structure in the mold are achieved, the driving range of clamping and positioning application of the demolding structure is conveniently adjusted, and rapid demolding of the wind power blade is achieved.

The utility model discloses an electric energy metering box body convenient to install, which belongs to the field of metering boxes and comprises a box body, a box door is movably installed on the front side of the box body, installation mechanisms are movably installed on the two sides of the box body, and each installation mechanism comprises a supporting plate, a first bearing, a containing pipe, a movable rod, a sliding rod, an installation screw rod, a connecting pipe and an installation plate. Through the arranged mounting mechanism, the storage pipe and the movable rod are rotated towards the rear position, the transverse position of the mounting plate is convenient to adjust by adjusting the angles of the storage pipe and the movable rod, the movable rod is pulled out of the storage pipe, the overall length of the movable rod and the storage pipe is movably adjusted, and a large gap is formed between the box body and the wall body; liquid on the outer wall body is not prone to making contact with the box body, the box body is prevented from being soaked and damaged, the movable rod is fixed through the fastening bolt, the connecting pipe movably moves on the mounting screw rod through the adjusting screw hole, and therefore the height of the position mounting plate is adjusted, and the box body is more convenient to mount.

This invention provides a micro-adhesive film-attached flexible circuit board packaging tray and packaging method, including a tray body with a front and a back. The front has several circuit board placement areas, and non-recessed areas corresponding to the placement areas are non-placement areas. The tray also includes: edge-guarding protrusions on the edges of the non-placement areas; edge-guarding protrusions with several hand-positioning grooves; placement areas with several placement grooves; and spacer protrusions at the joints of the placement grooves, dividing the placement areas into several placement grooves; the hand-positioning grooves are connected to the placement grooves. The release film is pressed against the micro-adhesive film through the hand-positioning grooves, allowing for the alignment and rapid packaging of the circuit boards. The spacer protrusions in the tray placement areas prevent the micro-adhesive film from sticking and overlapping, and their number and position can be set according to the specifications of the shipping packaging, enabling the simultaneous and rapid production of products of uniform specifications and improving packaging efficiency. The hand-positioning grooves are ergonomically designed to fit the size of a human finger, facilitating operation.

The utility model provides a portable egg roll table which comprises an egg roll table body, the egg roll table body comprises fixing seats, a table plate is fixedly installed between the fixing seats, fixing grooves are formed in the fixing seats, connecting seats are movably installed in the fixing grooves, movable columns are movably installed at the bottoms of the fixing seats, and the connecting seats are connected with the movable columns. A supporting pipe is movably installed at one end of the movable column, external threads are formed in the inner wall of the supporting pipe, a threaded column is fixed to one end of the movable column, and the threaded column is rotationally installed in the supporting pipe. When the portable egg roll table is used, the fixing seats are pulled, the length between the connecting seats and the fixing seats is increased, the gap between the table plates is increased after the length between the table plates is increased, the overall length of the table plates is adjusted, and the supporting requirements under different conditions are met.

The utility model discloses a noise reduction heat preservation board, which relates to the technical field of heat preservation boards and comprises a board body, the board body comprises a first wallboard, a noise reduction heat preservation filling layer is arranged on one side of the first wallboard, and a second wallboard is arranged on one side of the noise reduction heat preservation filling layer. A plurality of sets of protruding strips are evenly arranged on the side, away from the noise reduction and heat preservation filling layer, of the second wall plate, and upper clamping blocks are arranged in the middle of the top of the plate body. According to the utility model, through the arrangement of the lower clamping block and the upper clamping block, longitudinal clamping connection is facilitated, the noise-reduction heat-preservation plate located at the bottom abuts against the noise-reduction heat-preservation plate located at the top, the stacking is more stable in the stacking process, and the gap between the outer heat-preservation plates can be reduced for limiting measurement by utilizing the lower clamping block and the upper clamping block; if the lower clamping blocks and the upper clamping blocks are completely attached, it can be guaranteed that gaps between the heat preservation plates are just good, and it is avoided that the heat preservation effect is reduced and moisture permeates due to the fact that the gaps are too large.

This utility model discloses a shaping, cooling, and cleaning device for pigskin puffing processing, including a spraying mechanism and a feeding mechanism. The spraying mechanism includes a clean water tank, a water supply pipe, a diversion pipe, and a spray pipe. The feeding mechanism includes an equipment frame, a chain conveyor belt, a hanger, a drive motor, a submersible pump, and cleaning wheels. The hanger is fixedly installed on the upper surface of the equipment frame. The drive motor is installed on the side surface of the equipment frame to drive the chain conveyor belt and cleaning wheels. The submersible pump is installed in the water supply tank and supplies water to the diversion pipe through the water supply pipe. The diversion pipe is connected to the top of the spray pipe, and the spray pipe is movably installed on the equipment frame. This utility model has the advantages of adjustable spray angle, self-cleaning conveyor belt, and thorough cleaning, solving the problems of incomplete cleaning and cross-contamination caused by traditional equipment.

The present invention relates to a tea fiber membrane cloth preparation device, belonging to the technical field of membrane cloth preparation, the tea fiber membrane cloth preparation device comprises a workbench, and also comprises: a water collecting mechanism; a sprinting mechanism. The present invention uses the water collecting mechanism and the sprinting mechanism in coordination, so that the water collecting mechanism works under the action of the high-pressure water jet ejected by the spurting plate, thereby driving the sprinting mechanism to pass through the spurting net back and forth and penetrate into the tea fiber non-woven fabric back and forth, and in the process of the sprinting mechanism penetrating back and forth into the tea fiber non-woven fabric, the sprinting mechanism will spray water into the tea fiber non-woven fabric, wash the fibers inside the tea fiber non-woven fabric longitudinally and transversely, remove the pollutants adhered to the fibers inside the tea fiber non-woven fabric, and provide transverse impact force for the fibers of the tea fiber non-woven fabric, further promote the mutual entanglement and entanglement of the fibers, enhance the bonding force between the fibers, and can increase the gap between the fibers after bonding, thereby improving the air permeability of the prepared membrane cloth.

The invention relates to the technical field of heat shrink packaging, in particular to an ion exchange resin release film heat shrink packaging machine which comprises a main body plate, and a rotary edge sealing mechanism for conducting upper end heat sealing on an ion exchange resin surface isolation film is arranged at the upper end of the main body plate. The rotary edge sealing mechanism comprises two first limiting grooves symmetrically formed in the side face of the main body plate, and the upper end of the main body plate is provided with a rotary film covering mechanism for conducting film winding on the resin surface; a second electric telescopic rod drives two second fixing bodies to move to the upper end of the isolating membrane, then a double-shaft electric telescopic rod shrinks to drive two rolling wheels to make contact with the isolating membrane inwards at the same time, then a battery drives a heating piece to conduct heating, and therefore heat sealing is conducted on the isolating membrane at the upper end, and the upper portion of arc-shaped resin is tightly attached and covered with a film.

The utility model discloses a popcorn heat dissipation device for popcorn production, which comprises a box body, two groups of bearing seats are symmetrically arranged in the box body, a bearing frame matched with an inner cavity of the box body is arranged on the bearing seats, an elastic supporting structure is arranged between the bearing frame and the bearing seats, and a crankshaft is arranged in the box body through a bearing. A knocking wheel is rotatably installed at the position of a connecting rod journal of the crankshaft through a bearing, a plurality of sets of air blowing pipes are arranged at the top end in the box body, a plurality of air blowing heads are arranged on the air blowing pipes, the multiple sets of air blowing pipes are connected with an air blowing structure, air outlets are formed in the two side walls of the box body, and intercepting filter screens are arranged at the positions of the air outlets. According to the popcorn knocking device, the bearing frame for bearing popcorns can be knocked, and the blowing and heat dissipation effects of the popcorns are improved.

The present invention relates to a benzylaminopurine purification method and purification equipment, which are used to solve the problem that the existing benzylaminopurine is difficult to be purified to more than 99%. The benzylaminopurine purification method comprises the following steps: step 1: adding a solvent to a benzylaminopurine crude product, wherein the mass ratio of the benzylaminopurine crude product to the solvent is 1:12-20, and stirring and dissolving; step 2: filtering the benzylaminopurine solution obtained in step 1 with a filtering device, standing, filtering after natural crystallization, washing with a solvent and drying, and obtaining a benzylaminopurine fine product with a purity of more than 99%.

A gas spring mounting structure and connection structure, and a device having an opening and closing mechanism are disclosed. The gas spring mounting structure is used to connect the gas spring to the opening and closing mechanism. The first end of the gas spring is used to connect to the housing of the opening and closing mechanism. The gas spring mounting structure includes: a first support member with a first end face and a first hole in the first end face; a second support member with a second end face and a second hole corresponding to the first hole in the second end face; and a first threaded fastener, which is embedded in the second support member and the first support member through the second hole and the first hole to realize the disassembly and locking of the first support member and the second support member. The first threaded fastener is used to reduce the gap between the second support member and the first support member during the locking process, thereby gradually pre-tightening the gas spring. Furthermore, due to the existence of the gas spring mounting structure, no additional gas spring mounting fixture is required, avoiding the influence of the superposition of the tolerances of the fixture and the gas spring on the installation accuracy.

The application discloses a storage and transportation trolley, which comprises a bottom support horizontally arranged, at least four wheels arranged on the lower side of the bottom support, a first side support and a second side support, which are both vertically arranged on the bottom support and are arranged in parallel and at intervals, and a third side support and a fourth side support, which are arranged in parallel and at intervals between the first side support and the second side support, and each of the third side support and the fourth side support comprises a crossbeam and a plurality of vertical columns, the two ends of the crossbeam are connected with the first side support and the second side support respectively, the plurality of vertical columns are arranged in parallel and at intervals and are detachably inserted into the crossbeam, and the lower end of each vertical column is in abutment with the bottom support, wherein the crossbeam is parallel to the bottom support, and the vertical column is perpendicular to the bottom support. According to the storage and transportation trolley, plate-shaped objects can be conveniently stored and transported.

The invention relates to the technical field of automatic grinding, and discloses a precise composite grinding machine. According to the precise composite grinding machine, a distance meter can measure the distance between a protective shell and a grinding wheel and measure the abrasion thickness of the grinding wheel, then a baffle is driven through a retracting and releasing assembly, and the gap between the baffle and the grinding wheel is adjusted to be the initial distance; water drops can flow out of a water tank in the collecting assembly and flow down along the inner wall of the baffle, so that the side wall of the baffle is wetted, after the spark chips make contact with the inner wall of the baffle, the spark chips can be instantly extinguished and do not have adhesiveness any more, and finally the spark chips follow water flow; and the air blowing assembly can blow out air, cool the grinding wheel and blow-dry water drops adhered to the side wall of the air blowing assembly, and the situation that the grinding wheel and a workpiece cannot make direct contact and the grinding quality is affected due to the fact that the water drops form a water film on the surface of the grinding wheel is prevented.

The invention discloses a lens dismounting device for an optical lens, which comprises a lens supporting and connecting part and an expansion pressing block below the lens supporting and connecting part, the expansion pressing block is connected with a lifting rod, the lifting rod is provided with a trapezoidal lead screw, a vibration guide seat is arranged right below the expansion pressing block, a straight supporting rod is arranged in the circumferential direction of the vibration guide seat, one end of the straight supporting rod is movably connected with the vibration guide seat, and the other end of the straight supporting rod is provided with a supporting block. The supporting block is used for supporting the inner wall of a lens cone, the straight supporting rod is in linkage with the expansion pressing block through the inclined supporting rod, the expansion pressing block drives the straight supporting rod to conduct inward closing and outward expansion movement in the ascending and descending process of the lifting rod, the vibration guiding base is installed in a through hole in a top plate of the housing base, and the vibration guiding base is provided with limiting structures above and below the top plate respectively. A sliding block of the trapezoid lead screw is arranged in an axial through hole of the vibration guide seat and penetrates through a groove in the vibration guide seat to be fixedly connected with a top plate of the housing base, the lifting rod is connected with the lifting control assembly through the transmission gear assembly, one end of the lifting rod is connected with the driven gear in a sleeved mode and can slide up and down, and the lifting control assembly is connected with the transmission gear.

The utility model provides an improved X-ray detector which is characterized in that a first slope channel is arranged in an inlet assembly, and an outlet of the first slope channel is communicated with an inlet of a detection channel; a first material sliding plate is laid in the first slope channel; a first shielding curtain is arranged at an inlet of the first slope channel, and a second shielding curtain is arranged at an outlet; a second slope channel is arranged in the outlet assembly, the height from an inlet of the second slope channel to the ground is larger than that from an outlet to the ground, and the inlet of the second slope channel communicates with an outlet of the detection channel; a second material sliding plate is laid in the second slope channel; a third shielding curtain is arranged at an inlet of the second slope channel, and a fourth shielding curtain is arranged at an outlet of the second slope channel. The technical problems that in the prior art, due to the fact that the gap between the lead curtain and the conveying belt is too small, light objects are blocked, and due to the fact that the gap between the lead curtain and the conveying belt is too large, X-rays leak are solved.

This utility model relates to the field of yarn tube paper production technology, and more particularly to a calendering device for yarn tube paper production. The technical solution includes a base plate, with a fixed frame fixedly connected between the top edges of the base plate and the two sides. A guide roller is rotatably connected between the inner walls of the two sides of the fixed frame near the top edge. Connecting plates are slidably fitted onto the outer surfaces of the guide rollers near both ends. This utility model uses a first rotating gear to drive a bidirectional threaded rod to rotate, causing the connecting plates to move relative to each other under the action of the bidirectional threaded rod. The connecting plates drive limiting blocks to slide on the guide rollers, thereby effectively controlling the gap between the limiting blocks, facilitating the guidance of the yarn tube paper on the guide rollers, effectively reducing uneven guidance of the yarn tube paper, making the yarn tube paper more compact during calendering, and thus improving the calendering effect of the device.

This utility model discloses a rockery that is easy to plant, comprising a pool, several rocks, and a sprinkler system. Adjacent rocks are connected by a fixing component containing a grouting cylinder, enhancing the connection and perspective effect. The rocks are irregularly stacked around the sprinkler system, which includes a first water pump, nozzles, and a deflector to achieve water feature landscaping and misting effects. A second water pump delivers water to the top of the rockery. Mounting boxes are embedded in the sides of the rocks, containing planting blocks for planting greenery. The mounting boxes are connected to a humidification component containing a water channel and drip pipes to replenish water for the greenery and create a high-humidity environment. This rockery has a stable structure, offers diverse landscape effects, and facilitates planting and maintenance of greenery.