47results about How to "Easy to tie and fix" patented technology

The invention discloses a control wire winding device with a function of preventing a wire coil from loosening. The control wire winding device comprises a bottom plate, wherein two first supporting legs and a second supporting leg are arranged on the left side and the right side of the upper surface of the bottom plate respectively; a first bearing is clamped on the left side surface of the second supporting leg; a first rotating shaft is connected into the first bearing in a sleeving manner; one end of the first rotating shaft is fixedly connected with the right side surface of a first wire winding wheel; two clamp slots are formed in the left side surface of the first wire winding wheel. According to the control wire winding device with the function of preventing the wire coil from loosening, the first wire winding wheel, a second wire winding wheel, sliding chutes, a motor, a slide bar, electric push rods, telescopic devices and an extrusion roll are arranged, so that when the device is used for bundling and fixing a control wire, the control wire can be prevented from loosening; meanwhile, the control wire after being bundled and fixed can be taken down from the first wire winding wheel and the second wire winding wheel, therefore, the bundling and fixing speed of a worker for the control wire is increased, the bundling and fixing efficiency of the control wire is improved, and production efficiency of the control wire is guaranteed.

The invention belongs to the technical field of special automobile manufacturing and relates to a multifunctional lateral forklift type operating vehicle. The multifunctional lateral forklift type operating vehicle comprises a chassis, a whole-stoke reciprocating mechanism, a two-degree-of-freedom gantry assembly, a fork frame assembly, retractable pallet fork assemblies, telescopic side protection devices and the like. The two-degree-of-freedom gantry assembly and the fork frame assembly are mounted on the whole-stoke reciprocating mechanism which is mounted on the chassis, the retractable pallet fork assemblies are mounted on two sides of the fork frame assembly respectively, and the telescopic side protection devices are mounted on two sides of the chassis respectively. By mounting of the two-degree-of-freedom gantry assembly, the fork frame assembly and the retractable pallet fork assemblies on the whole-stoke reciprocating mechanism which is mounted on the chassis, pallet forks are enabled to lift articles on two sides of the chassis and capable of lifting illegally parked automobiles and lifting other products in loading and unloading for physical distribution. The multifunctional lateral forklift type operating vehicle has advantages of simple structure, convenience in maintenance, stability in operation, improvement of integral forklift operating efficiency, low requirements on operation sites, freeness of obstacle removing environment limits, high automation degree and effectiveness in labor cost reduction.

The invention relates to a transformer oil tank structure comprising a tank body and tank edges, the tank body is rectangular and comprises an opening at the top part, the longitudinal section of the tank edges is shaped like a rectangular 7, the bottom surface of the vertical side of the 7 is fixedly welded with the opening end surface of a tank body wall of the tank body, and the four tank edges are mutually connected to constitute a whole body with the tank body. The transformer oil tank structure is characterized in that two ends of the tank edges which are oppositely arranged are respectively longer than the tank body wall, and the vertical sides of the tank edges which are longer than the tank body wall are respectively provided with a through hole. Compared with the prior art, the transformer oil tank structure utilizes the originally arranged tank edges to extend the tank edges which are oppositely arranged backward, one through hole is respectively arranged on the vertical side of each extension part for being used as a hanging hole, as the tank edges and the tank body wall are integrally and fixedly welded, the welding surface is large and the integrity is good, thereby not only eliminating the shortcoming that the prior art needs to fixedly weld the hanging rings separately, but also improving the reliability of the hanging rings.

The invention discloses a construction method of a sewage pipeline and bases, for solving the problem that when a pipeline is mounted in a ditch, the integrality and stability are poor, the deviationof the pipeline is easily caused, and the mounting straightness and smoothness of the pipeline can not be guaranteed. The key points of the technical scheme are as follows: the construction method ofthe sewage pipeline comprises the following steps: 1, excavating a foundation pit and an inspection well; (2) hanging a side line for pipe alignment in the foundation pit according to the central point of the inspection well and the center line of the pipeline, and controlling the trend and elevation of the pipeline by utilizing the side line; (3) placing pipeline in the foundation pit, connectingthe adjacent pipelines according to the straightness and height of the side line, wherein the straightness is kept between the adjacent pipelines according to the side line, and the pipelines are connected; and (4) backfilling the foundation pit. Each base comprises a base body, and a rope is arranged between the two bases, a puncturing hole is formed in each base body, a pull piece used for winding of the rope is arranged on each base body, then positioning for the pipelines is realized by utilizing the side line and the bases, so that the straightness and smoothness are guaranteed during pipeline connecting and mounting.

A hoisting arm is balanced, a hoisting object is positioned below a hoisting point, and can not generate influence to the balance of the hoisting arm, and cargo can be placed at termination of a container. A hoisting tool has the advantage of simple structure and durable performance, is convenient for operation, and can rapidly hoist the cargo for cartonning. According to the invention, cartonning efficiency is increased, cost for opening the top container is saved, operation security is greatly increased, and the cargo colligation and fixing are convenient for workers.

The invention relates to a puncture hole suturing device for minimally invasive surgery. The suturing device comprises a supporting rod, a handle assembly and a suturing assembly. The handle assembly is arranged at one end of the supporting rod, and the suturing assembly is arranged at the other end of the supporting rod. The handle assembly comprises a handle bracket (1), double-side handle rings (2), a needle holding handle (3), a sliding circular ring handle (4) for double needle opening and closing and a sliding circular ring handle lock catch (12), wherein the circular ring handle and the double-side handle rings are arranged on the supporting rod, the sliding circular ring handle lock catch (12) is arranged on the sliding circular ring handle (4), the double-side handle rings (2) are arranged on the two sides of the needle holding handle (3), and the handle bracket (1) is arranged at the end of the supporting rod. According to the technical scheme, a suturing double needle, an upper hinge rod and a lower hinge rod can be rotationally adjusted at any angle, operation is flexible and convenient, and the suturing mode of outward pricking of an interior needle entering the enterocoelia is achieved.

The present invention belongs to the technical field of medical devices and particularly discloses a multifunctional traction frame for orthopedics department. The multifunctional traction frame for orthopedics department comprises a traction frame base seat, a supporting part is arranged at a lower part of the traction frame base seat, a lower limb fixing disk is horizontally and slidably connected to the traction frame base seat along a length direction, a limiting part for fixing a position of the lower limb fixing disk is arranged on the traction frame base seat, a driving part for drivingthe lower limb fixing disk to move is arranged on the traction frame base seat, a lower limb fixing part for binding lower limbs is arranged at a middle part of a left side of the lower limb fixing disk, a foot fixing part for fixing feet is arranged at the middle part of the left side of the lower limb fixing disk, a hook is connected to the foot fixing part, and a balancing weight is detachablyconnected to the hook. The multifunctional traction frame is mainly used for lower limb traction and solves a problem that a lower limb traction method in the prior art is liable to cause inconvenience in treatment for patients.

The invention relates to a traffic police car with a high anti-collision safety factor. The car comprises a head and a support column, the head is installed at the upper end of the left side of a carbody, wheels are arranged at the lower ends of the left side and the right side of the car body, and an anti-collision plate is connected to the lower end of the head. The traffic police car with thehigh anti-collision safety factor has the advantages that the anti-collision plate, connecting columns, springs and compression-resistant plates are arranged, the anti-collision plate is internally provided with the compression-resistant plates made of hard alloy materials, the connecting columns uniformly arranged between the two compression-resistant plates play a supporting and connecting role,the springs closely sleeve the connecting columns, when the car is crashed, the anti-collision plate at the front end is extruded, the connecting columns can play a supporting and certain reinforcingrole, if stress is too large, the collecting columns deform, impact force is absorbed through the action of the springs, a certain buffer effect is achieved, damage of a vehicle is reduced, and the protection effect is achieved.

The invention relates to an agricultural greenhouse, in particular to a greenhouse with an adjustable mesh enclosure. The greenhouse with the adjustable mesh enclosure comprises a greenhouse body; ridges are formed on the land in the greenhouse; slide rails are correspondingly arranged above the ridges in the greenhouse; pulleys sliding along the slide rails are arranged in the slide rails; traction ropes are arranged on the pulleys; the mesh enclosure is arranged under the slide rails; pulleys are also arranged on the mesh enclosure and are connected with the pulleys arranged in the slide rails through chains; the chains are connected with a winch; the mesh enclosure consists of a transverse connecting rod, a vertical connecting rod and a mesh surface supported by the transverse connecting rod and the vertical connecting rod; the transverse connecting rod in the direction along the slide rails can extend and contract; matched binding belts and buckle elements are arranged on the adjacent vertical connecting rods; the bottom end of the mesh enclosure is provided with an opening. The crops of different strains can be isolated through the mesh enclosure arranged in the greenhouse; the mesh enclosure position and length can be regulated according to the planting condition; the adaptability is higher; the operation is convenient.

The invention provides a novel concrete top die stick. The novel concrete top die stick comprises a top die stick body, the cross section of the top die stick body is rectangular, iron wires are pre-buried symmetrically at the two sides of the top die stick body, and meanwhile the distance between the outermost wire and the end, the same side of the outermost wire, of the top die stick body is 1 mm smaller than the thickness of a concrete protective layer. The novel concrete top die stick has the advantages of being simple and practical in structure, safe in operation, low in cost and the like, the top die stick body can be accurately fixed on a horizontal rebar during wall rebar binding through the pre-buried iron wires, rebar framework offset can be prevented and the thickness of the concrete protective layer can be controlled, and the construction quality is sufficiently ensured. Compared with an existing concrete top die stick depending on a notch to fix, the novel concrete top die stick is more stable and reliable in structure and more convenient to bind and fix, and compared with a steel top die stick, the novel concrete top die stick is low in cost.

The invention discloses a sidecar of a side motor tricycle. The sidecar comprises a rectangular frame-shaped bottom frame; a horizontal front base plate and a horizontal rear base plate are fixed at the front end and he rear end of the bottom frame respectively; a seat is fixed between the front base plate and the rear base plate; two U-shaped rear side frames are symmetrically and laterally arranged behind the seat respectively, wherein an opening of each U-shaped rear side frame is downward; a longitudinal front side frame is connected in front of each rear side frame; a lateral front protection frame is fixed at the front end of the bottom frame; one edge of the bottom frame is connected with a front lateral connecting pipe and a rear lateral connecting pipe; one side of the front protection frame, which is towards the connecting pipes, is connected with an adjustment device and an adjustment device is connected with the outside the rear side frame which is arranged on the side of the front protection frame; a supporting frame is connected with the outside of the rear side frame and the front side frame far away from the adjustment devices; a side wheel is arranged between the supporting frame and the corresponding front side frame. According to the sidecar of the side motor tricycle, the integral structure is simple, meanwhile the practicability is high, the design is skillful, the production is easy, the production cost is low, and the like.

The invention provides a foot warping tackle, and belongs to overhead cable laying construction apparatus in the electric power industry. A movable pulley used for being sleeved on a steel strand to move is movably mounted on a middle shaft, wherein the middle shaft is fixed on two fixed arms; a movable shaft is arranged at the lower parts of the two fixed arms; two movable arms are respectively fixed at the two ends of the movable shaft, which are positioned on the outer sides of the two fixed arms; the length from the movable shaft to the front end of each movable arm, namely a front arm, is smaller than the length from the movable shaft to the back end of each movable arm, namely a back arm; a front arm pulley used for transmitting a cable is arranged at the front ends of the two movable arms; and a back arm pulley used for transmitting the cable is arranged at the back ends of the two movable arms. The foot warping tackle has the advantages that the front arms and the back arms, which are unsymmetrical, are adopted; and a right angled triangle is formed by utilizing the dead weight of the cable and the steel strand, so that the cable can be reliably borne and rapidly transmitted, the construction intensity is reduced and the construction safety is improved.

The invention discloses a micro-visual temperature measuring device. The micro-visual temperature measuring device comprises a shell, a storage battery, a rubber plate, a circuit board, a panel, a display screen, a button, an installing plate, a supporting column, a heat insulation block, a fixed opening, a sensor, a magnet and a connecting bridge. The micro-visual temperature measuring device hasthe advantages that the insulation and deformable rubber plate is padded between the storage battery and the circuit board, it is avoided that the circuit board is in contact with the storage batteryto cause an insulation fault, heat generated when the circuit board works can also be isolated, and it is avoided that the temperature of the surface of the storage battery is over high; space between the shell and the installing plate is filled with the heat insulation block made from a heat insulation material, the measuring part devices are separated from the temperature displaying and information processing device parts, and it is avoided that due to the high temperature precision equipment such as the display screen and the circuit board is damaged. The micro-visual temperature measuringdevice is small and exquisite in using and convenient to check, and is particularly suitable for temperature measurement of some narrow areas.

The invention discloses a prefabricated laminated slab suitable for laying a floor heating pipeline and a preparation process. According to the prefabricated laminated slab, stirrup reinforcing steelbars are adopted to replace pins, the stirrup reinforcing steel bars and reinforcing steel bars in the prefabricated laminated slab are laid, bound and fixed at the same time, and truss bars in the prefabricated laminated slab are canceled, so that the steel bar laying and binding time in the prefabricated laminated slab is effectively shortened, and the production and machining efficiency of theprefabricated laminated slab is remarkably improved compared with a plug pin manner; the truss ribs are cancelled, so that the production cost of the prefabricated laminated slab is reduced; the stirrup reinforcing steel bars are higher in strength, so that the stirrup reinforcing steel bars are prevented from being broken during on-site assembly construction; the stirrup reinforcing steel bars are simple and reasonable in structural design and can be conveniently bound and fixed to the reinforcing steel bars in the prefabricated laminated slab, and the vertical precision of the upper end of an n-shaped rod is guaranteed; the prefabricated laminated slab is simple and reasonable in structural design, high in preparation implementation feasibility and high in economic practicability, and has potential application and popularization prospects; and the preparation process of the prefabricated laminated slab is simple to operate, and the production and processing efficiency of the prefabricated laminated slab is ensured.

The invention belongs to the technical field of logistics and transportation, and specifically relates to an industrial warehouse logistics distribution system; it includes a distribution master control terminal, a transport vehicle, a transport box, a hand-held terminal and a user terminal, and the distribution master control terminal is used for coordinating system functions , and issue instructions to each module of the system to realize the corresponding functions; the distribution master control terminal is connected to the handheld terminal and the user terminal based on wireless communication; the user terminal is used to receive the distribution information sent by the handheld terminal and pick up the goods; The transport vehicle is used to deliver the goods to a designated location; the transport box is used to pack the goods and place them on the transport vehicle for distribution; the logistics box used in the present invention is glued at the corner of the inner chamber Connect the buffer airbag, and place foam boards around the goods at the same time, to provide a certain elastic buffer for the goods when the transport vehicle bumps, thereby increasing the friction between the goods and the bottom of the box, and increasing the difficulty of moving the goods in the box. Make the goods more secure.

The invention provides a rolling mechanism of a metal cold and hot thin plate formed through calendaring. The rolling mechanism comprises a base plate, a first supporting column plate is fixedly connected to one side of the middle of the top end of the base plate, an inclined plate is fixedly connected to the bottom end of one side of the first supporting column plate, a lifting positioning mechanism is arranged on one side of the top end of the base plate, the rolling mechanism is arranged on one side of the middle of the first supporting column plate, a bundling mechanism is arranged at the top end of the first supporting column plate, and an adjusting mechanism is arranged on the inner side of the bundling mechanism. The rolling mechanism has the beneficial effects that rolled metal sheets can be conveniently bundled and fixed, time and labor are saved during bundling and fixing, the bundling stability is good, the time occupied by bundling can be shortened, bundled metal sheet rolls can be conveniently detached and collected, the detaching time can be saved, and the rolling efficiency can be improved.

The invention provides an anti-cross-injection single-arm rotating immersion bath rehabilitation device, and belongs to the technical field of physiotherapeutic immersion bath devices. The anti-cross-injection single-arm rotating immersion bath rehabilitation device comprise a cylinder body used for accommodating immersion bath fluid, an electric power mechanism arranged on the outer side of the cylinder body, a surfing power mechanism and a controller. The electric power mechanism comprises a power box body, a motor, a power arm and a suspension arm. The power box body is connected with a supporting column and the motor. The power arm is connected with the power box body and the motor, so that the power arm rotates at a set angle clockwise or anticlockwise around a horizontal axis. The power arm is connected with the suspension arm through a rotating shaft. The suspension arm is kept in a natural sagging state and in vertical connection with one end of a bed board. The other end of the bed board is completely suspended. The device of the invention well overcomes the defects of tedious disinfection procedure, incomplete disinfection and existence of certain cross infection risk in traditional immersion bath devices.

The invention discloses an umbrella-shaped aluminum foil packaging box, which comprises fan aluminum foil paper. The fan aluminum-foil paper is evenly provided with a plurality of crease portions. Thebottom portion of the fan aluminum foil paper is inserted on a circular baseboard. The outer side of the fan aluminum foil paper is provided with a binding band in a binding mode. The top portion ofthe fan aluminum foil paper is fastened with a top cover. The umbrella-shaped aluminum foil packaging box and manufacturing method thereof can improve the existing technical deficiencies and improve the use convenience of aluminum foil packaging.

The invention discloses an aluminum pipe conveying mechanism for aluminum machining and a construction method. The conveying mechanism comprises a supporting plate, supporting legs and a rope, the supporting legs are arranged under the supporting plate, side baffles are arranged at the two sides of the supporting plate, and connecting columns are arranged outside the side baffles. Guide plates are arranged outside the connecting columns, connecting plates are arranged at the four corners of the exterior of the supporting plate correspondingly, and jacking assemblies are arranged below the connecting plates. According to the present invention, aluminum pipes can be quickly conveyed in a workshop, the construction cost is reduced, and the working efficiency is improved; meanwhile, screws are arranged at the two ends of the supporting plate and are sleeved with the transverse plates, so that a limiting effect is achieved; during construction, the guide plates are arranged outside the supporting plate, so that the large-diameter aluminum pipe is convenient to carry, convenient to use, simple to operate and easy to popularize.

The invention provides portable intelligent moisture detection equipment for petroleum production. The portable intelligent moisture detection equipment comprises a liquid crystal display screen, a PLC, a storage battery, a suitcase structure, adjustable rotary clamps, a flexible metal pipe, a microwave radar moisture sensor, a telescopic detection type propelling rod structure, a petroleum-eliminating protecting sleeve and a connecting bolt nut, wherein the liquid crystal display screen is mounted on the left upper side in the suitcase structure through bolts; the PLC is mounted on the left lower side of the suitcase structure through bolts; the storage battery is mounted on the right side in the suitcase structure through bolts; the adjustable rotary clamps are mounted on the left and right sides of the lower part of the suitcase structure through bolts, respectively; and one end of the flexible metal pipe is in threaded connection to the middle of the lower part of the suitcase structure, and the other end of the flexible metal pipe is in threaded connection to the upper end of the microwave radar moisture sensor. The portable intelligent moisture detection equipment can be usedfor intelligent detection and display, can stretch into petroleum production equipment for moisture detection and is convenient to operate.

The invention discloses a high-efficiency cooling motor with a compact structure, which comprises a connecting end cover, a front end cover, a stator core and a rear end cover, a stator winding is set in the stator core, and the center of the connecting end cover, the front end cover and the rear end cover The rotating shaft is installed, and the outer wall of the rotating shaft is fitted with a rotor iron core. The outer wall of the rotor iron core is fitted with a magnetic steel, and the connecting end cover, the front end cover, the stator core and the rear end cover are fitted together and the cooling water pipe is installed. The cooling water pipe includes Inlet and outlet pipes, straight pipes and connecting pipes. The straight pipes pass through the front end cover, stator core and rear end cover. The outer wall of each straight pipe is screwed with two compression nuts, and the two compression nuts are respectively attached to the front end cover and the rear end cover. The rear end cover, the two ends of the connecting pipe are respectively connected to the ends of two straight pipes, one end of the inlet and outlet pipe is connected to the end of the straight pipe, the inlet and outlet pipes, the straight pipe and the connecting pipe are connected to form a cooling water pipe, and the inlet and outlet pipes pass through Connect the end cap. The invention has the advantages of simple and compact structure, low cost, good cooling effect and convenient assembly and disassembly.

The invention relates to a production process of geotextiles, and relates to the technical field of textile production. It uses a geotextile production equipment, which includes a winding device, a fixing piece and a fixing device, wherein the fixing piece fixes the geotextile on the roll. On the winding device, the winding device winds and fixes the geotextile, and the fixing device fixes the wound geotextile to prevent the geotextile from spreading; the invention has the effect of improving the utilization rate of the geotextile and improving the production efficiency.

The invention discloses a simple mouth fastening type plastic film garbage bag, which comprises a film bag body characterized by having a step bag mouth, namely, one side of the bag mouth is provided with a strip notch section, and the other side of the bag mouth is provided with a strip stretched section having the same length as the strip notch section; the film bag body along the lower edge of the strip stretched section has a linear point score break, and a point-free score break zone with L more than or equal to 3 cm is reserved between the terminal A of the straight point score break and the end B of the strip notch section. The strip stretched section is cut apart along the linear point score break under the bag mouth to another end, the tail of the strip stretched section is cut off along the point score break, and then two film bands connected with the bag mouth of the film bag body are formed. The film band can be directly used for fastening and fixing the mouth of the plastic film garbage bag on a dustbin mouth or fastening and sealing the mouth of the garbage bag.

The invention relates to a geotextile production process, and relates to the technical field of textile production. The process uses geotextile production equipment, the equipment comprises a windingdevice, a fixing part and a fixing device, the fixing part fixes geotextile on the winding device, the winding device winds and fixes the geotextile, and the fixing device is used for fixing the woundgeotextile to prevent the geotextile from being scattered. The process has the effects of improving the utilization rate of the geotextile and improving the production and work efficiency.

The invention discloses an anti-corrosion aluminum round pipe step rope ladder. The anti-corrosion aluminum round pipe step rope ladder comprises an aluminum round pipe, a winding drum and an air blower, wherein two top open grooves are formed in the top of the aluminum round pipe, a hollow cavity is formed inside the aluminum round pipe, a fixed clamping block and a movable clamping block are arranged on the two sides of the aluminum round pipe, the fixed clamping block and the movable clamping block form a fixed groove, and the winding drum is arranged on the top of the aluminum round pipe. According to the anti-corrosion aluminum round pipe step rope ladder, a nickel plating layer, an anti-corrosion coating and a ladder rope are arranged, after the surface of the aluminum round pipe is plated with nickel, the abrasion resistance of the aluminum round pipe can be improved, the corrosion resistance of the aluminum round pipe can also be improved, then a layer of anti-corrosion coating is coated to form the anti-corrosion coating, and the corrosion resistance of the aluminum round pipe is further improved, the ladder rope is made of polytetrafluoroethylene, the material has the characteristics of acid resistance, alkali resistance and resistance to various organic solvents and is hardly dissolved in all solvents, and the polytetrafluoroethylene has the characteristic of high temperature resistance, so that the whole device has stronger corrosion resistance.

The invention discloses a suture-free artificial blood vessel device which comprises a supporting ring, an artificial blood vessel and an eversion section. The artificial blood vessel is provided with at least one eversion section. The supporting ring is arranged on the artificial blood vessel in a sleeving mode along the eversion section, and the eversion section is turned outwards and wraps the supporting ring. The supporting ring wrapped by the artificial blood vessel can be inserted into a blood vessel, so that the artificial blood vessel and the blood vessel are bridged. The bridging position is bound and fixed through a ligation binding line, so that suture is avoided. The support ring is isolated from the blood vessel by the artificial blood vessel, so that direct contact between the support ring and blood is avoided.

The invention provides a living crocodile transportation device based on the aquaculture field. The living crocodile transportation device comprises rollers and fixed bolts, wherein a connecting plateis of a rectangular plate structure, and the connecting plate is located in a transportation frame; a sliding rail is located on the connecting plate, and a stop block is arranged in the sliding rail; a crocodile storage box is of a hollow structure, and the exterior of the crocodile storage box is of a hollow structure; a top cover is of an arc structure, and the top cover is located on the topof the crocodile storage box; three handles are arranged, and two handles are respectively installed on the left and right ends of the top of the front end of the crocodile storage box; another handleis installed on the end surface of the back side of the crocodile storage box; and one end of a bundling belt is fixedly connected to the interior of the crocodile storage box, and a shackle is installed on the other end of the bundling belt. According to the living crocodile transportation device, living crocodiles which are placed in the crocodile storage box in multiple places can be intensively stored at the same time, and the long-distance transportation of the crocodiles in the crocodile storage box is facilitated to personnel.

The invention discloses a steel structure manufacturing and machining tool for house splicing and a using method of thereof. The steel structure manufacturing and machining tool comprises a pushing mechanism, a conveying and buckling mechanism, a stacking mechanism and a material arranging mechanism; the pushing mechanism comprises a fixed table; a turning plate is arranged at the top end of the fixed table; a first air cylinder is arranged on one side of the turning plate; a first pushing plate is fixed to an output end of the first air cylinder; gears are fixed to the bottom of the end, away from the first air cylinder, of the turning plate; a connecting rod is fixed between the gears; a first bearing is arranged on a rod body of the connecting rod; the first bearing is fixed to the fixed table; a sliding block is arranged at the bottom of each gear; a rack is fixed to the top of each sliding block; the racks are connected with the gears in a meshed mode; a limiting groove is arranged at the side, close to the sliding blocks, of the fixed table; a second push plate is arranged at the bottom of the end, away from each gears, of the sliding block; a movable cavity is arranged in the fixed table; and the limiting groove is communicated with the movable cavity.

The invention relates to an agricultural greenhouse and concretely relates to a greenhouse preventing pollen spread. The greenhouse preventing pollen spread comprises a greenhouse body. Ridges are formed in the land in the greenhouse; a slide rail (1) is correspondingly arranged over the field ridges in the greenhouse; pulleys capable of sliding along the slide rail (1) are arranged in the slide rail; traction ropes are arranged on the pulleys; meshes are arranged under the slide rail (1); a pulley is further arranged on each mesh (2) and connected with each pulley in the slide rail (1) via achain; each chain is connected with a winch; and the bottom ends of the meshes (2) are opened. With the meshes (2), crops of different strains can be separated; the mesh (2) positions can be adjustedaccording to plantation conditions; and the operation is convenient and the meshes (2) can be reused.

The invention relates to a swinging positioning mechanism for a selective tissue removing directional positioning drawing device. The swinging positioning mechanism includes a swinging positioning rod; the swinging positioning rod includes a longitudinal channel formed by a bottom plate and two side plates, wherein a purse thread can pass through the longitudinal channel; and at least two front thread grooves for limiting the purse thread are arranged on the front end of the swinging positioning rod, and at least two back thread grooves for supporting the purse thread are arranged on the back end of the swinging positioning rod. According to the invention, the position of the purse thread can be adjusted according to the position of a diseased tissue of a patient, the determined purse thread can be limited by the front thread grooves on the front end and then is drawn to the back thread grooves on the back end through the longitudinal channel, the purse thread can accurately draw a tissue to be removed in the direction outside the anus and parallel to the direction of an anal tube, the drawing direction of the purse thread is perpendicular to the anal tube and a wall of a rectum, it is ensured that a drawing point is the center of the tissue to be removed, and then a doctor can easily and accurately cut the selected tissue, the operation is safe, labor resources and material resources can be saved, and the operation efficiency can be improved.