220results about How to "Has a limiting effect" patented technology

The invention discloses a linear cutting suturing device, which comprises an upper tong clamp and a lower tong clamp, wherein the upper tong clamp and the lower tong clamp can realize the mutual closing or opening, the remote end of the lower tong clamp is provided with a nail cabin, a cutter feeding groove is arranged on the nail cabin in the axial direction, the lower tong clamp is in a U shape, a nail pushing rod and a cutter pushing rod are glidingly arranged inside the lower tong clamp, the remote end of the cutter pushing rod is provided with a cutter, the near end of the nail cabin is provided with a safety mechanism, the safety mechanism comprises a first press block, a triggering mechanism and at least one elastic element, the first press block is arranged in the nail cabin, the bottom end of the cutter is provided with a first notch, and the first notch can realize the longitudinal movement in the nail cabin under the effect of the elastic element and the triggering mechanism, so the first press block and the first notch can be selectively clamped and connected or separated. The linear cutting suturing device has the major beneficial effects that the structure is simple, the processing is convenient, safety and reliability are realized, and good popularization values are realized.

The invention relates to a nonlinear rigidity vibration isolator of natural frequency for high speed vehicle floating floor board. It is made from vibration reduction glue and frame board. It has the nonlinear hardening rigidity feature and low system natural frequency and low influence of load to natural frequency. It has good vibration reduction effect and keeps low noise in the vehicle.

The invention provides a manpower-assisted handheld push-pull electromagnet variable-diameter branch-clamping orange ring peeling device, comprising a handle, a spring, a rotating shaft, a movable ring, a fixed ring and push-pull electromagnets, wherein the spring is a tension spring and is fixedly arranged on the handle; during operation, the spring arranged on the push-pull electromagnets fixes the movable ring on an orange branch to prevent the movable ring from rotating with a ring peeling knife; the handle is divided into two parts; the fixed ring is arranged on the handle, and two parts of the fixed ring are buckled together to form a whole ring; when the handle is opened and closed, the fixed ring is opened and closed with the handle; the fixed ring is provided with a groove; a roller wheel is inlaid in the groove and rolls in the groove; a link rod penetrates through a center hole of the roller wheel; the roller wheel performs circular movement; the link rod connects two orange ring peeling devices together; a ring peeling handle is fixed on the link rod, one end of the ring peeling handle is provided with a ring peeling knife, and the other end is provided with a link plate; and under manpower assistance, the ring peeling knife takes a fixed point between the handle and the link rod as the center of a circle and a distance from the fixed point to the point of the ring peeling knife as a radius to perform circular movement so as to perform ring peeling on oranges.

The invention provides a manual power-assisted hand-held push-and-pull electromagnet variable diameter branch clamping persimmon tree girdling device comprising a handle, a spring, a rotating shaft, a moving circle, a fixed circle, and push-and-pull electromagnets. The spring is fixedly installed on the handle, and the spring is an extension spring. When the girdling device works, the moving circle is fixed on a branch of a persimmon tree by springs disposed on the push-and-pull electromagnets to be prevented from rotating with a girdling knife. The handle is divided into two portions, the fixed circle is installed on the handle, two portions of the fixed circle are buckled to be a full circle, and the fixed circle is driven to open and close along with opening and closing of the handle. The fixed circle is provided with a groove, rollers are embedded into the groove and roll in the groove, a link rod passes through central holes of the rollers, and the rollers perform circular motion. Two persimmon tree girdling devices are connected by the link rod, a girdling handle is fixed on the link rod, one end of the girdling handle is provided with a girdling knife, and the other end of the girdling handle is provided with a link plate. Under the manual power assistance, the girdling knife performs circular motion, by using the fixed point of the handle and the link rod as the center of circle and using the distance from the fixed point to the point of the girdling knife as the radius, so as to perform girdling on the persimmon tree.

The invention provides an artificial assisting handheld push-pull electromagnet reducing branch clamping waxberry girdling device which comprises a handle, a spring, a rotary shaft, a dynamic circle, a fixed circle and a push-pull electromagnet. The spring is fixedly mounted on the handle, and the spring is a tension spring. During work, the dynamic circle is fixed to a branch of waxberries through the spring arranged on the push-pull electromagnet in order to prevent a girdling cutter from rotating, the handle is divided into two parts, the fixed circle is mounted on the handle, and two parts of the fixed circle are buckled together to form a complete circle. The handle is opened and closed, the fixed circle is opened and closed accordingly, a groove is formed in the fixed circle, a roller is embedded into the groove and rolls in the groove, a linkage rod penetrates through a center hole of the roller, and the roller does circular motion. Two waxberry girdling devices are connected together through the linkage rod, a girdling handle is fixed to the linkage rod, the girdling cutter is arranged at one end of the girdling handle, and a linkage plate is arranged at the other end of the girdling handle. Under artificial assistance, the girdling cutter does circular motion with a handle and the linkage rod fixed point as the circle center and with a cutter point from the fixed point to the girdling cutter as the radius to girdle the waxberries.

The invention relates to a pressing-pushing type box body and a manufacturing process. A plurality of lateral grooves formed by two L-shaped walls with the top wall and the lateral wall combined are formed in two lateral walls on the long side arranged opposite to the opening end of the pressing-pushing type box body in a recessed mode. A plurality of L-shaped insertion bones are arranged on the plane in a box cover at the portion corresponding to the lateral grooves in a protruding mode. Through grooves are formed in two lateral walls on the short side arranged opposite to the opening end of the box body, a frame groove is formed in the bottom end of each through groove, the top walls that the through grooves correspond to are vertically bended and contained in tongue pieces in the frame grooves, and frame insertion tongues are arranged in the plane of the box cover at the corresponding portion in a protruding mode. When the box cover covers the box body, the L-shaped insertion bones are inserted into the lateral grooves of the box body and move relative to the box body to enable the L-shaped insertion bones of the box cover to be clamped in the lateral grooves of the box body. The frame insertion tongue pieces of the box cover are properly embedded in the location frame grooves of the tongues of the box body in the forward-pushing and back-pulling process of the frame insertion bones.

The invention provides a human-assisted and handheld type winter jujube girdling device capable of realizing diameter-variable branch clamping through pushing and pulling electromagnets. The winter jujube girdling device comprises a handle, a spring, a rotating shaft, a moving circle, a fixed circle and the pushing and pulling electromagnets, wherein the spring is a tension spring and fixedly mounted on the handle, and during operation, the spring arranged on the pulling electromagnet fixes the moving circle on a branch of a winter jujube so as to prevent the moving circle from rotaing along with a girdling cutter; the handle is divided into two parts, the fixed circle is mounted on the handle, two parts of the fixed circle are buckled to form a whole circle, and the fixed circle is opened and closed with opening and closing of the handle; slots are formed in the fixed circle and rollers are embedded into the slots and roll in the slots; a link rod penetrates through center holes in the rollers, the rollers conduct circular rotation, and the link rod connects two winter jujube girdling devices together; a girdling handle is fixed on the link rod, the girdling cutter is arranged at one end of the girdling handle, a link plate is arranged at the other end of the girdling handle, and the girdling cutter conducts circular motion with the fixing point of the handle and the link rod as a circle center and the distance from the fixing point to the cutter tip of the girdling cutter as a radius to girdle the winter jujube under human assistance.

The invention provides an artificial auxiliary handheld bergamot pear tree girdling device achieving variable-diameter branch clamping through push-pull electromagnets. The device comprises a handle, a spring, a rotating shaft, a movable circle, a fixed circle and the push-pull electromagnets; the spring is fixedly installed on the handle and is a tension spring, and when operation is conducted, the movable circle is fixed to a branch of a bergamot pear tree through springs arranged on the push-pull electromagnets to prevent the branch from rotating along with a girdling knife; the handle comprises two parts, the fixed circle is installed on the handle, two parts of the fixed circle are buckled together to form a completer circle, the fixed circle is opened and closed along with opening and closing of the handle, a groove is formed in the fixed circle, and a rolling wheel is embedded into the groove and rolls in the groove; a connecting rod penetrates through center holes of the rolling wheels, the rolling wheels do circular rotation, two bergamot pear tree girdling devices are connected together through the connecting rod, a girdling handle is fixed to the connecting rod, the girdling knife is arranged at one end of the girdling handle, a connecting plate is arranged at the other end of the girdling handle, and by means of artificial auxiliary, the girdling knife does circular motion by taking the handle and connecting rod fixing point as a circle center and taking the distance between the fixing point and the knife tip of the girdling knife as the radius to girdle the bergamot pear tree.

The invention provides an artificial assistance handheld push-and-pull electromagnet variable-diameter branch clamping lychee tree girdling device. The girdling device comprises a handle, springs, a rotary shaft, a moving ring, a fixed ring and push-and-pull electromagnets. One spring is fixedly mounted on the handle, and a tension spring is used as the spring. During operating, the moving ring is fixed to a lychee tree branch by pulling the springs arranged on the electromagnets to prevent the moving ring from rotating along with a girdling knife. The handle is divided into two parts. The fixed ring is mounted on the handle. Two parts of the fixed ring are buckled together to form a full circle. The handle is opened and closed, and the fixed ring is opened and closed accordingly. The fixed ring is provided with grooves. Rolling wheels are embedded into the grooves and roll in the grooves. A link rod penetrates through center holes of the rolling wheels. The rolling wheels rotate circumferentially. The link rod connects two lychee tree girdling devices together. A girdling handle is fixed to the link rod. One end of the girdling handle is provided with the girdling knife. The other end of the girdling handle is provided with a yoke plate. Under artificial assistance, the girdling knife does circular movement to conduct girdling on a lychee tree with the fixed point of the handle and the link rod as the circle center and with the distance from the fixed point to the knife point of the girdling knife as the radius.

The invention provides a manpower-assisted handheld push-pull electromagnet variable-diameter branch-clamping pomelo tree ring peeling device, comprising a handle, a spring, a rotating shaft, a movable ring, a fixed ring and push-pull electromagnets, wherein the spring is a tension spring and is fixedly arranged on the handle; during operation, the spring arranged on the push-pull electromagnets fixes the movable ring on a pomelo tree branch to prevent the movable ring from rotating with a ring peeling knife; the handle is divided into two parts; the fixed ring is arranged on the handle, and two parts of the fixed ring are buckled together to form a whole ring; when the handle is opened and closed, the fixed ring is opened and closed with the handle; the fixed ring is provided with a groove; a roller wheel is inlaid in the groove and rolls in the groove; a link rod penetrates through a center hole of the roller wheel; the roller wheel performs circular movement; the link rod connects two pomelo tree ring peeling devices together; a ring peeling handle is fixed on the link rod, one end of the ring peeling handle is provided with a ring peeling knife, and the other end is provided with a link plate; and under manpower assistance, the ring peeling knife takes a fixed point between the handle and the link rod as the center of a circle and a distance from the fixed point to the point of the ring peeling knife as a radius to perform circular movement so as to perform ring peeling on pomelo trees.

The invention provides a manually assisted hand-held push-pull electromagnet variable diameter branch clamping longan ring peeling tool. The ring peeling tool comprises a handle, a spring, a rotating shaft, a moving circle, a setting circle and push-pull electromagnets; the spring which is a tension spring is fixedly installed on the handle, during operation, springs arranged on the push-pull electromagnets fix the moving circle to a branch of longan so as to prevent rotation along with a ring peeling knife, the handle is divided into two parts, the setting circle is installed on the handle, two parts of the setting circle are buckled together to form a full circle, the handle is opened and closed, and the setting circle is opened and closed accordingly; a groove is formed in the setting circle, a rolling wheel is embedded into the groove and rolls in the groove, a link rod penetrates through a center hole of the rolling wheel, the rolling wheel rotates in a circle, the link rod connects two longan ring peeling tools together, a ring peeling handle is fixed to the link rod, the ring peeling knife is arranged at one end of the ring peeling handle, a link plate is arranged at the other end of the ring peeling handle, and under manual assistance, the ring peeling knife moves in a circle by taking the fixed point of the handle and the link rod as the circle center and taking the distance from the fixed point to a knifepoint of the ring peeling knife as the radius to conduct ring peeling on the longan.

The invention provides an artificial assisting handheld push-pull electromagnet reducing branch clamping grape girdling device which comprises a handle, a spring, a rotary shaft, a dynamic circle, a fixed circle and a push-pull electromagnet. The spring is fixedly mounted on the handle, and the spring is a tension spring. During work, the dynamic circle is fixed to a branch of grapes through the spring arranged on the push-pull electromagnet in order to prevent a girdling cutter from rotating, the handle is divided into two parts, the fixed circle is mounted on the handle, and two parts of the fixed circle are buckled together to form a complete circle. The handle is opened and closed, the fixed circle is opened and closed accordingly, a groove is formed in the fixed circle, a roller is embedded into the groove and rolls in the groove, a linkage rod penetrates through a center hole of the roller, and the roller does circular motion. Two grapes girdling devices are connected together through the linkage rod, a girdling handle is fixed to the linkage rod, the girdling cutter is arranged at one end of the girdling handle, and a linkage plate is arranged at the other end of the girdling handle. Under artificial assistance, the girdling cutter does circular motion with a handle and the linkage rod fixed point as the circle center and with a cutter point from the fixed point to the girdling cutter as the radius to girdle the grapes.

The invention provides a manually assisted hand-held bar and pawl variable diameter branch clamping pomelo tree ring peeling tool. The ring peeling tool comprises a handle, a spring, a rotating shaft, a moving circle, a setting circle, a bar and a pawl; the spring which is a tension spring is fixedly installed on the handle, during operation, the pawl is meshed with a ratchet to fix the moving circle to a branch of a pomelo tree so as to prevent rotation along with a ring peeling knife, the handle is divided into two parts, the setting circle is installed on the handle, two parts of the setting circle are buckled together to form a full circle, the handle is opened and closed, and the setting circle is opened and closed accordingly; a groove is formed in the setting circle, a rolling wheel is embedded into the groove and rolls in the groove, a link rod penetrates through a center hole of the rolling wheel, the rolling wheel rotates in a circle, the link rod connects two pomelo tree ring peeling tools together, a ring peeling handle is fixed to the link rod, the ring peeling knife is arranged at one end of the ring peeling handle, a link plate is arranged at the other end of the ring peeling handle, and under manual assistance, the ring peeling knife moves in a circle by taking the fixed point of the handle and the link rod as the circle center and taking the distance from the fixed point to a knifepoint of the ring peeling knife as the radius to conduct ring peeling on the pomelo tree.

The invention discloses multifunctional surgical scissors for tissue culture. The multifunctional surgical scissors comprise two scissor bodies, wherein the two scissors bodies each are composed of knife handles, finger rings, scalpel blades and tweezers heads, a rotating shaft is arranged on one of the scissors bodies, a first through hole corresponding to the rotating shaft is formed in the other scissors body, the two scissors bodies are arranged in a crossed mode, and the rotating shaft penetrates through the first through hole and then is fixed through a check ring; and the finger rings are riveted at the tail part of the knife handles, bulges are arranged at the head part of the knife handle, and the scalpel blades are clamped at the bulges; and guide grooves are formed in the knifehandles, sliding rods are arranged in the guide grooves in a sliding mode, adjusting assemblies capable of adjusting the positions of the sliding rods are arranged on the sliding rods, close to the scalpel blades, of the sliding rods, and the detachable tweezers heads are arranged at one ends, close to the scalpel blades, of the sliding rods. The multifunctional surgical scissors not only have thefunctions of the scissors and tweezers but also have a scalpel function, but also can be used for conveniently replacing the scalpel blades and the tweezers heads.

The invention relates to a leached rice cooker. The leached rice cooker comprises a housing, an earthen bowl body and a rice water pot. The earthen bowl body is disposed in the housing, a heating mechanism is arranged between the bottom of the earthen bowl body and the housing, the rice water pot is detachably arranged on the bottom of the housing, and the bottom of the earthen bowl is in communication with the rice water pot via a drain channel. A rice leaching disc provided with leaching gaps is disposed in the earthen bowl body, the rice leaching disc is detachably fixed to the middle portion of the earthen bowl body to separate the earthen bowl body into two chambers. A stirring mechanism is disposed in an upper chamber, and the stirring mechanism is driven by a motor fixed to the housing in a sealing mode. A channel control mechanism is disposed in a lower chamber, and the channel control mechanism is used for controlling the drain channel to be opened and closed. The leached rice can be made through firstly boiling and then steaming, the rice can be stirred during boiling, the rice boiling effect is good, the rice water can be automatically collected after the rice is boiled, steam comes from the bottom and goes to the top during steaming, so the contact area between the steam and the rice is large, and the steamed rice is good in effect.

The invention discloses an oscilloscope assembling probe, and belongs to the field of a measurement device. The oscilloscope assembling probe comprises a probe shell; the left end of the probe shell is fixedly connected with a wire; the surface of the wire is sleeved in a sliding mode with a storage box; the storage box is provided with a groove; the storage box is provided with symmetrical clamping holes; the storage box is provided with symmetrical through holes; the storage box rotationally sleeves a coiling wheel; a mounting groove is formed in the coiling wheel; the inside of the mountinggroove is fixedly connected with a coil spring; the upper end of the coil spring is in contact connection with a baffle; the lateral surface of the baffle is fixedly connected with the mounting groove; and the lower ends of the clamping holes are clamped with clamping rods. According to the oscilloscope assembling probe, an arranged plug has a rapid connection function, so that a mounting speed of the assembling probe is improved and time is saved; moreover, the arranged coiling wheel has a function of automatically coiling a wire and a length of the wire can be regulated as required, so thatthe wire cannot be disorderly placed outside to scrape an object, thereby improving use comfort of the assembling probe.

The invention is suitable for the technical field of mattress processing, and provides a cutting device for mattress processing. The cutting device for mattress processing comprises a workbench, a first conveyor belt and a second conveyor belt, a cutter and a lifting drive part, wherein the workbench is used for supporting and mounting parts, and the upper surface of the workbench is fixedly equipped with a mounting frame; the first conveyor belt and the second conveyor belt are arranged in a transfer direction of the workbench in series for transferring mattresses; the cutter is arranged inside the mounting frame in a lifting mode, and the bottom of the cutter is fixedly equipped with a cutter body for cutting; at least one end of the cutter is fixedly connected to an incomplete indentedstrip; the lifting drive part is mounted on the mounting frame for driving the mounting frame to lift; two groups of first transfer rollers and second transfer rollers are rotatably arranged on the workbench; ends of the first transfer rollers are fixedly connected to driven gears coaxially; and a first drive gear and a second drive gear as well as a first one-way rack and a second one-way gear which are coaxially connected are rotatably arranged on the workbench. The cutting device has the advantages of being simple in structure, good in synchronism, strong in continuity, and high in cuttingefficiency.

The invention relates to a carriage tail drainage side plate, a drainage frame and a vehicle. The vehicle comprises a carriage, wherein a drainage side plate is arranged on the side edge on the tail part of the carriage, and the drainage side plate is hinged with the carriage. By adopting the carriage tail drainage side plate, the drainage frame and the vehicle, the air resistance when the vehicle runs at a high speed can be effectively reduced, and the energy conservation and emission reduction can be realized.

The invention provides an artificial assistance handheld bar and pawl variable-diameter branch clamping orange tree girdling device. The girdling device comprises a handle, a spring, a rotary shaft, a moving ring, a fixed ring, a ratchet bar and a ratchet pawl. A tension spring is used as the spring. During operating, the ratchet pawl is engaged with ratchets to fix the moving ring to an orange tree branch to prevent the moving ring from rotating along with a girdling knife. The handle is divided into two parts. The fixed ring is mounted on the handle. Two parts of the fixed ring are buckled together to form a full circle. The handle is opened and closed, and the fixed ring is also opened and closed accordingly. The fixed ring is provided with grooves. Rolling wheels are embedded into the grooves and roll in the grooves. A link rod penetrates through center holes of the rolling wheels. The rolling wheels rotate circumferentially. The link rod connects two orange tree girdling devices together. A girdling handle is fixed to the link rod. One end of the girdling handle is provided with the girdling knife. The other end of the girdling handle is provided with a yoke plate. Under artificial assistance, the girdling knife does circular movement to conduct girdling on an orange tree with the fixed point of the handle and the link rod as the circle center and with the distance from the fixed point to the knife point of the girdling knife as the radius.

The invention provides an artificial auxiliary handheld winter jujube tree girdling machine capable of clamping a branch in a variable-diameter manner by using a ratchet strip and a pawl. The machine comprises a handle, a spring, a rotation shaft, a movable ting, a fixed ring, the ratchet strip and the pawl, wherein the spring which is a tension spring is fixedly installed on the handle; when in operation, the pawl is engaged with the ratchet strip to fix the movable ring on a branch of a winter jujube tree so as to be prevented from rotating along with a girdling knife; the handle is divided into two parts; the fixed ring is installed on the handle; two parts of the fixed ring are buckled to form a whole ring; the fixed ring is opened and closed along with the opening and closing of the handle; a groove is arranged on the fixed ring; an idler wheel is embedded into the groove and rolls in the same; a link rod penetrates through the center hole of the idler wheel; the idler wheel rotates circumferentially; the two winter jujube tree girdling machines are connected together by the link rod; a girdling handle is fixed on the link rod; the girdling knife is arranged at one end of the girdling handle while a link plate is arranged on the other end; and under artificial auxiliary, the girdling knife rotates circumferentially by taking the fixed point of the handle and the link rod as a circle center and the distance between the fixed point and the knife point of the girdling knife as a radius to girdle the winter jujube tree.

The invention relates to an installing slide way for an inserted heat exchanger on a tower. The installing slide way comprises two supporting seats, two track plates, a fixing shaft and idler wheels, wherein the two supporting seats are welded to the inner wall of a tower body; the two ends of each track plate are fixed to the corresponding supporting seat through bolts, and drilled holes are evenly distributed in the track plates in the same horizontal plane in the length direction; the fixing shaft penetrates from one drilled hole in the track plate on one side to one drilled hole in the other track plate on the other side, and the fixing shaft and the outer sides of the track plates on the two sides are welded together; the fixing shaft penetrates through the idler wheels. Through the installing slide way, the installing difficulty of the heat exchanger can be reduced, and installing accuracy of the heat exchanger is improved.

The invention relates to an indoor rock mechanical testing apparatus, in particular to a rock mechanic testing machine capable of realizing continuous change of shear direction and belongs to the technical field of geotechnical engineering. The testing machine comprises a bearing platform, a first gear, a motor, a second gear, a bearing, a bearing end cover, a supporting post, a shear box and a forcing device, solves the difficulty in changing the shear direction in the conventional shear test, can control applying of normal stress and shear stress and rotation of the shear surface individually or hybridly, is simple in structure and high in practicability, is applied to theory and test of rock mechanics, and can be used for precise description to a rock fracture process and a fracture system in engineering.

The invention relates to a four-way ball valve. The four-way ball valve comprises a valve body and a valve plug, wherein the valve body is provided with four fluid inlet and outlet channels, the valve plug is located in an inner cavity of the valve body, a valve seat component is arranged in each fluid inlet and outlet channel, and comprises a pre-fastening spring junk ring, a valve seat support barrel and an annular valve seat seal ring which are coaxial with the fluid inlet and outlet channel and are sequentially distributed along the axis, the annular valve seat seal ring is in sealed fit with the valve plug, the outer side surface of each valve seat support barrel is in sealed fit with the inner wall surface of the corresponding fluid inlet and outlet channel, a circular groove used for clamping the valve seat seal ring is arranged on the end surface, close to the inner cavity of the valve body, of the valve seat support barrel, a plurality of pre-fastening springs are arranged between the end surfaces of each pre-fastening spring junk ring and the corresponding valve seat support barrel, a limit part is mounted on the inner wall of each fluid inlet and outlet channel, and the end surface, far from the inner cavity of the valve body, of each pre-fastening spring junk ring is abutted against the corresponding limit part. The valve seat component greatly improves the sealing reliability of the valve, and the installation, the displacement and the maintenance of the valve seat component are very convenient.

The invention discloses a lamp focal length adjusting mechanism. A lamp light source is connected with a lamp radiator housing; an adjusting assembly is connected with the lamp radiator housing; the lamp light source is fixedly mounted on the lamp radiator housing through a light source bracket and fixing screws; the adjusting assembly comprises a rotating ring, a focusing lens, a lens fixing ringand a silica gel adjusting ring, wherein the focusing lens is mounted in the lens fixing ring in a snap joint manner; a protruding strip on each of two sides of the lens fixing ring corresponds to agroove in the corresponding side of the lamp radiator housing, and is mounted in the lamp radiator housing; the rotating ring is clamped on the lamp radiator housing, and positioning protruding pointsin the rotating ring correspond to oblique grooves of the lens fixing ring; and the smooth surface of the silica gel adjusting ring is connected to a groove in the outer wall of the rotating ring ina sleeving manner. Through the adoption of the lamp focal length adjusting mechanism disclosed by the invention, the problems that in the prior art, in the process of lamp focal length adjustment, themachining accuracy requirement is high, the processing cost is high, the adjusting process is not smooth and the mechanism is unstable after being used for a long term, are solved; and the lamp focallength adjusting mechanism is simple and compact in structural dimension, low in cost, and stable in effect.

The invention discloses a water conveying tank for water conservancy project construction in the technical field of water conservancy projects. The water conveying tank comprises a water conveying tank body, wherein baffles are arranged in the middles of the inner walls of the left side and the right side of an inner cavity of the water conveying tank body; first sliding grooves are formed in the middles of the upper end faces of the baffles; rollers are evenly arranged in inner cavities of the first sliding grooves; connecting columns penetrate the centers of the end faces of the rollers; mounting plates are arranged on the upper end faces of the connecting columns; mounting boxes are arranged in the centers of the upper end faces of the mounting plates; servo motors are arranged in inner cavities of the mounting boxes; motor shafts of the servo motors penetrate the mounting plates to the lower end faces of the mounting plates; the lower end faces of the motor shafts of the servo motors are fixedly connected with threaded rods; the middles of the outer walls of the threaded rods are sleeved with sliding sleeves; and dredging devices are fixedly connected to the left sides and the right sides of the sliding sleeves. The device is simple in structure and convenient to operate, sludge in the water conveying tank is effectively removed, and the water conveying efficiency is improved.

The invention belongs to the technical field of closed water connection, and particularly relates to an FRD double-sealed immediate detection closed water socket-and-spigot joint. The problems that inthe prior art, a spigot and a socket possibly make contact with each other and are sealed, the positions which make contact with each other and are sealed are prone to causing connectivity of the interior of a annular space to be interrupted, accordingly, sealing performance detection of a double-sealed socket-and-spigot joint is uncompleted are solved. According to the technical scheme, the FRDdouble-sealed immediate detection closed water socket-and-spigot joint comprises a spigot and a socket, the spigot is a joint part of an inserting-in end, and the socket is a joint part of a socket end; the outer wall of the spigot is provided with an annular pressure test groove, the two sides of the pressure test groove are provided with annular sealing ring installation grooves correspondingly,and sealing rings are installed in the sealing ring installation grooves; and the socket is provided with pressure test holes which correspond to the pressure test grooves. In addition, baffles are arranged in the pressure test grooves. The FRD double-sealed immediate detection closed water socket-and-spigot joint is suitable for connection of drainage pipelines.

The invention belongs to the technical field of drainage pipes, and specifically relates to a polyolefin drainage pipe with FRD double seal for instant detection of a closed water bell and socket joint. The polyolefin drainage pipe aims at the problem that in the prior art, a socket and a bellmouth may be contacted and sealed, and the contacted and sealed parts may lead to the interruption of theinternal connectivity of an annulus, and then the incomplete detection of the sealing inspection of the double-sealed bell and socket joint may exist. According to the technical scheme, the polyolefindrainage pipe comprises a pipeline, two ends of the pipeline are separately provided with the socket and the bellmouth through an integral forming mode, an annular pressure test groove is arranged onthe outer wall of the socket, and annular sealing ring installation grooves are arranged on both sides of the pressure test groove; and a pressure test hole is formed in the bellmouth, the distance between the pressure test hole and a bellmouth opening is equal to the distance between the middle of the pressure test groove and a socket opening, and in addition, a baffle can be arranged in the pressure test groove. The polyolefin drainage pipe with the FRD double seal for instant detection of the closed water bell and socket joint is applicable to the connection of the drainage pipeline.

The invention discloses a device for geochemically sampling vehicle-mounted soil, and relates to the technical field of sampling devices. The device comprises a sampling plate and sampling cups; the sampling plate includes a center column, a grounding plate and a tray; one surface of the center column is fixedly provided with the grounding plate; the tray is fixed on the peripheral side surface ofthe center column; the other surface of the center column is provided with a hanger; the hanger is connected with the mechanical arm of a mini-truck; one surface of the tray is fixedly provided witha hydraulic cylinder; a plurality of first through holes are arranged in one surface of the grounding plate; one surface of the grounding plate is matched with the rotating disk; a plurality of secondthrough holes are arranged in one surface of the rotating disk; springs are fixed in the second through holes; every sampling cup includes a round cup and a round tube; a third through hole is arranged in one surface of every round cup; one surface of every round cup is provided with the corresponding round tube; and the peripheral side surfaces of the round tubes are matched with the internal surfaces of the springs. The problems of low sampling efficiency and limited sampling in the prior art are solved through the vehicle-mounted sampling disk and the sampling cups.

The invention discloses a uniform coloring device for yarn spinning convenient for collecting waste liquid, comprising a dyeing tank, a yarn body, a discharge port and fan blades; a first supporting plate is arranged on one side of the dyeing tank; a motor shaft is connected to the end of a motor, and the yarn body is wound on the outer side of a yarn roller; the motor shaft is connected with a connecting shaft through a track, and the discharge port is fixed at the lower corner of the dyeing tank; the top of a spray head is connected with one end of a conveying pipe, and a drying box is fixedon the other side of the dyeing tank; a transmission shaft penetrates the inside of the drying box, and a movable roller sleeves the transmission shaft. According to the uniform coloring device for yarn spinning convenient for collecting waste liquid, in the continuous coloring process of yarns, it can be guaranteed that the conveyed yarns can be always positioned right below the spray head, theuniform comprehensiveness of coloring is improved, redundant dye on the yarns can be extruded and dried after coloring, and dye waste is avoided.

The invention provides a dynamic balance adjustable cutter handle, and relates to the technical field of numerical control machine tool processing. The dynamic balance adjustable cutter handle comprises a main shaft connecting end, a cutter connecting end, a gravity center adjusting part and a gravity center adjusting piece, wherein the main shaft connecting end and the cutter connecting end are coaxially connected; the gravity center adjusting part is arranged on the outer edge of the cutter connecting end; the gravity center adjusting piece is arranged in the gravity center adjusting part; and by changing the gravity center position of the gravity center adjusting piece, the gravity center of the whole cutter handle can be adjusted. According to the dynamic balance adjustable cutter handle provided by the invention, by utilizing the cooperative installation of the gravity center adjusting part and the gravity center adjusting piece, an effect on dynamically balancing the gravity center of the whole cutter handle can be achieved, the dynamic balance of machining by a machine tool is realized, and the processing accuracy of a workpiece is improved.