132 results about "Lift thread" patented technology

An electrical-safety charging pile comprises a charging pile body. A rotary groove is arranged in the charging pile body, a winding disc is rotatably installed in the rotary groove, a step groove is arranged in the left end face of the charging pile body, an interconnected through hole is arranged between the step groove and the rotary groove, a charging cable is wound on the winding disc, a central groove extending vertically is arranged in the position of the center of the upper end wall of the rotary groove, a slider is installed in the central groove in a vertical sliding manner, a first mounting groove communicated with the central groove is arranged in the upper end wall of the central groove, a lifting thread hole with the opening facing the first mounting groove is arranged in the slider, a lifting thread rod is mounted in the lifting thread hole in a thread fitness manner, the upper end of the lifting thread rod is rotatably mounted in the first mounting groove and is fixedly provided with a first bevel gear, an elastic pressure piece and a conductive pillar located at the position of the center of the elastic piece are fixedly mounted to the lower end of the slider, and a conductive sleeve is mounted at the position of the center of the end face of the winding disc and facing the slider.

The invention discloses an upper lower adjustable clamp apparatus for a sponge cutting mechanism, which comprises a rack, wherein the a plurality of lifting motors are fixed on a top plate of the rack; output shafts of the lifting motors upwardly extends outside the top plate and the output shafts are threadingly connected to lifting threaded rods; the lifting threaded rods are fixed on a bottom surface of a bottom lifting plate; a slide track is fixed on the top surface of the bottom lifting plate; a support column is fixed on an edge portion of the top plate of the rack; the top portion of the support column is fixed on an upper top plate; a lower pressing motor of an upper pressing disc is fixed on the upper top plate; an output shaft of the lower pressing motor of the upper pressing disc downwardly penetrates through the top plate and the output shaft of the lower pressing motor is threadingly connected a thread connecting column set on the top portion of the upper pressing disc; a plurality of stopper rods are fixed on the top surface of the upper pressing disc; and the stopper rods are inserted into a plurality of sleeve cylinders set on the bottom surface of the upper top plate. The apparatus provided herein can be mounted on a position of an electric resistance wire cutting apparatus; a sponge block can be automatically fixed; the sponge block can be lifted and dropped, thus the height is corresponding to the electric resistance wire cutting apparatus; the cutting is convenient; and the effect is good.

The invention discloses a mechanical connection pile head using a repetitively used precast concrete pile as an end plate and a manufacturing method of the mechanical connection pile head. The mechanical connection pile head using repetitively used precast concrete pile as the end plate comprises the end plate, a connection sleeve, a rebar and precast bolts; the rebar is connected with the connection sleeve connected with the end plate; multiple high-strength bolt fixing holes, three precast bolt holes and three plate lifting threaded holes are formed in the end plate; the precast bolt holes and the plate lifting threaded holes are uniformly distributed in the central line of the concentric circles of the end plate; precast bolts are arranged in the precast bolt holes in the end plate and the end plate is locked by using two nuts, after piling is finished, the precast concrete pile can be recycled to be used in the next product; during bearing platform construction, a bearing platform rebar is directly screwed into the threaded holes in the connection sleeve, so as to realize the fast mechanical connection between a pile head and the bearing platform rebars; the adopted pile head is provided with the detachable end plate, the strength and tenacity of the end plate are far high than those of concrete, the end plate is more impact-resistant during construction, and the cost reduction as well as efficiency and quality improvement are all facilitated due to the recycle of the end plate and the mechanical connection of the pile head.

The invention discloses a cloth transition transferring and winding mechanism. The cloth transition transferring and winding mechanism comprises a bottom main plate. A drive support base plate is arranged above the middle of the bottom main plate. A winding mechanism body is fixed to the top face of the right end of the bottom main plate. The front side and the rear side of the drive support base plate are connected into corresponding movable screw rods in a screw joint mode correspondingly. The two ends of the movable screw rods are hinged to corresponding vertical main supporting plates which are fixed to the top face of the bottom main plate. One of the vertical main supporting plates corresponding to the two ends of the movable screw rods is fixedly provided with a movable fine adjustment motor. Vertical studs are hinged to the two sides of the top face of the drive support base plate. The top ends of the vertical studs are connected into center screw holes of lifting thread sleeves in a screw joint mode. The top ends of the lifting thread sleeves are fixed to upper supporting plates. According to the cloth transition transferring and winding mechanism, an upper driving roller and a lower driving roller can be adjusted up and down as well as left and right, and thus the tension degree can be adjusted; and the space between the upper driving roller and the lower driving roller can be automatically adjusted through operation of the adjustment motor, adjustment is made convenient, no manual operation and adjustment are required, and safety is achieved.

Provided is an internal combustion type biomass gasifier. A sealing cover is arranged on the upper portion of a gasifier body, the sealing cover is connected with a screw feeder, and materials enter the screw feeder through a hopper. A stirring connector which is in transmission with a perforation lifting device via a gear and is driven by a lifting thread suspension shaft is arranged in the middle of the upper portion of the sealing cover and is located in a hearth, and the stirring connector can rotate and also can move vertically. Lateral gas discharge is adopted based on the down-draft type gasification principle, the staying time of gas in the gasifier is prolonged, the temperature of the gas discharged out of the gasifier is lowered, and the loss of heat is reduced. A tooth-type water cooling ash falling device can make water in a hollow water cooling tooth shaft generate vapor with high-temperature charcoal ash and also can reduce the influence of ash falling on the ash content in combustible gas, and the tar content in the generated combustible gas is relatively low; meanwhile, the oxygen content in the material gasification process is reduced, the N2 content in the combustible gas is reduced, material waste caused by direct combustion is reduced, the gas yield is increased, and the fuel gas quality is improved.

The invention provides a double-thread-loosening mechanism for a sewing machine. The double-thread-loosening mechanism comprises a thread-shearing thread loosening mechanism and a presser-foot-lifting thread loosening mechanism, wherein the thread-shearing thread loosening mechanism and the presser-foot-lifting thread loosening mechanism are actuated through a thread-shearing steel wire rope (33) and a presser-foot-lifting steel wire rope (15) respectively. The thread-shearing steel wire rope (33) pulls a thread loosening crank (4) to rotate through a thread-shearing thread loosening connection board (31) hinged to the thread loosening crank (4), and a pin (20) fixed on the thread loosening crank (4) acts on a first lug (161) of a thread loosening board (16) due to the rotation of the thread loosening crank (4), so that the thread loosening board (16) moves to separate thread clamping pieces (211 and 212). The presser-foot-lifting steel wire rope (15) is directly connected with the thread loosening board (16), so that the thread loosening board (16) moves to separate thread clamping pieces (211 and 212) due to pulling of the presser-foot-lifting steel wire rope (15). The problem that the sewing machine only has one thread loosening function at present is solved.

An LED illuminating lamp unit comprises a frame and an LED illuminating lamp device; a transfer channel having a top port and a fixing channel having an end port facing the transfer channel; a transfer plate is mounted in the transfer channel in a transferrable manner through a bearing; the center of the transfer plate is provided with a middle channel, a lift arm is movably mounted in the middle channel, an internal threaded hole with a bottom port is arranged in the lift arm, a lift threaded rod is mounted in the internal threaded hole in threaded fit manner, a transfer middle shaft is mounted at the lower end of the middle channel in transferrable manner through a bearing, the upper end of the transfer middle shaft is fixedly connected with the lift threaded rod, the lower end of the transfer middle shaft is extended into the fixing channel and is fixedly fitted with an upper transfer toothed wheel, an inner toothed ring is fixedly mounted at the bottom end of the fixing channel, a vertical movement cavity vertically extended out is also arranged in the transfer plate, a moving carrier is movably mounted in the vertical movement cavity, and a lift motor is fixedly mounted in the moving carrier.

The invention relates to a concrete carbonized protective layer bonding strength detector. The concrete carbonized protective layer bonding strength detector comprises a table board (2). A lifter (3) is arranged on the table board. A lifting threaded rod (4) is arranged on the lifter in a matched mode. An adhesion plate (10) is arranged below the table board. The lifting threaded rod penetrates through the table board and is matched with the adhesion plate. The periphery of the table board (2) is provided with a set of adjusting threaded rods (6). The lower end of each adjusting threaded rod is provided with a supporting leg (1) in a rotating fit mode. The bottom of each supporting leg (1) is provided with a suction cup (9). By the adoption of the technical scheme, the concrete carbonized protective layer bonding strength detector has the advantages of being simple in structure, convenient to operate, small in testing result error, applicable to a construction site and the like.

The invention discloses a fixing device for an iron automobile part block body polishing mechanism. The fixing device comprises a rack; a main placing block is fixedly arranged at the middle part of the top surface of a top plate of the rack; a rectangular frame is fixedly arranged on the top surface of the main placing block; an auxiliary telescopic through groove is formed in the middle part ofthe main placing block; a waste material falling through groove is formed in the part, under the auxiliary telescopic through groove, of the top plate of the rack; a lower bottom plate is arranged under the top plate of the rack; the lower bottom plate is fixed to the inner side walls of lower part landing legs of the rack; a dual-output-shaft motor is fixedly arranged on the bottom surface of themiddle part of the lower bottom plate; driving bevel gears are fixedly arranged on a left output shaft and a right output shaft of the dual-output-shaft motor; and two lifting threaded sleeves are hinged to the lower bottom plate. The fixing device can automatically adsorb and fix a to-be-machined block, the fixing is firm, and manual or mechanical automatic polishing is facilitated; in addition,the fixing device is provided with a lifting waste material receiving sleeve, so that waste materials or dust are / is received in real time; and the fixing device is good in effect and high in efficiency, and pollution to the surrounding environment is reduced.

A cargo transport device comprises a container carriage and a container. Guiding ribs which are located on the left and right symmetric axes and extend back and forth are arranged on the bottom wall of an inner cavity of the container carriage, and guiding grooves matched with the guiding ribs are formed in the bottom wall of the container; two bilaterally symmetrical step grooves are formed in the bottom wall of the container, and first limiting grooves are symmetrically formed in the two sides of the step grooves; lifting devices extending into the step grooves are arranged on the bottom wall of the inner cavity of the container carriage in a bilaterally symmetrical mode, each lifting device comprises a sliding groove with an opening facing the inner cavity and a sliding plate installed in the sliding groove in a sliding mode, a threaded sleeve is fixedly installed in the center of the lower end of each sliding plate, a lifting threaded rod is installed in each threaded sleeve in a thread fitting mode, and each lifting threaded rod is in power connection with a lifting motor fixedly installed at the bottom end of the corresponding sliding groove.

The invention relates to the field of sports equipment, and particularly relates to a table tennis table for exercise. The table tennis table comprises a table body, wherein the middle of the bottom part of the table body is provided with a lifting thread pipe of which inside wall has threads; the upper end of a vertical lifting lead screw is matched up with the lifting thread pipe through an outside thread, and the lower end thereof is in threaded screwing to an adjusting pillar at the bottom part; four corners of the bottom part of the table body are provided with one supporting leg, the upper end of every supporting leg is in ball pair connection with every limiting pillar fixedly connected to the bottom part of the table body, and the bottom part of every supporting leg is in ball pair connection with a supporting pillar; the bottom part of every supporting pillar is fixedly connected with a supporting plate. The table tennis table for exercise is simple in structure, reasonable in design, and can be installed to adapt to uneven ground in placement and guarantee the levelness of the whole table face after mounting; the mounting precision is high; in case of local sunken during the process of striking a table tennis, the table tennis can be repaired; the table tennis table can more effectively meet people demand, and solve the problems existed in the prior art.

The invention discloses an informationized mobile communication repeater. The informationized mobile communication repeater comprises a machine body and a storage cavity which is formed in the machinebody and has an upward opening; symmetrical first sliding guide grooves are communicatively formed in the left inner wall and the right inner wall of the storage cavity, first cavities are arranged on the tops of the first sliding guide grooves, symmetrical second sliding guide grooves which are located on the tops of the first cavities are communicatively formed in the left inner wall and the right inner wall of the storage cavity, and a second cavity is arranged at the bottom of the storage cavity; and a first sliding guide block is connected in the storage cavity in a sliding fit mode, second sliding guide blocks are connected in the first sliding guide grooves in a sliding fit mode, the end faces, close to the first sliding guide block, of the second sliding guide blocks are fixedly connected with the corresponding end faces of the first sliding guide block, and lifting thread rods extending up and down are connected in the second sliding guide blocks in a thread fit mode. The informationized mobile communication repeater is simple in structure, convenient to operate, high in safety coefficient, convenient to store and high in signal acceptance.

The invention discloses a metal plate inlay mechanism with a positioning mechanism, which includes a frame, a mold base is fixed in the middle of the top plate of the frame, the middle of the top surface of the mold base has an installation groove, and the left and right sides of the mold base are The upper part of the inner wall is fixed with a support block, and the top surface of the support block is fixed with a rotary cylinder. The rotating shaft of the rotary cylinder passes through the support block and is fixed with a pressing plate. The metal plate is inserted into the installation groove, and the bottom surface of the metal plate is pressed against On the top surface of the installation groove, both sides of the metal plate are under the pressing plate, and the bottom surface of the pressing plate is close to the top surface of the metal plate; the top surface of the top plate of the rack is fixed with a main support frame, The top surface of the middle part of the top plate of the main support frame is fixed with a compression motor, the rotating shaft of the compression motor passes through the top plate of the main support frame and is screwed with a lifting screw sleeve, and the bottom end of the lifting screw sleeve is fixed with a stamping plate; it can automatically The sheet body is embedded in the metal plate, and the installation is convenient and the effect is good.

The invention discloses an operation platform anti-collision and damping rubber processing device which comprises a base and a work frame. The two sides of the top of the inner side of the work frameare fixedly connected with lifting motors, and the lifting motors are rotationally connected with first bevel gears through output shafts. The upper parts of the first bevel gears are connected with second bevel gears in a meshing mode, and the second bevel gears are fixedly connected with lifting threaded rods through flat keys. The surfaces of the lifting threaded rods are glidingly connected with moving blocks, and the moving blocks are fixedly connected with a work master control box through connecting rods. The bottom of the work master control box is fixedly connected with a connecting rack, and the bottom of the connecting rack is provided with a reciprocating device through a rack mounting head. The operation platform anti-collision and damping rubber processing device solves the problem that when the operation platform anti-collision and damping rubber is processed, improper thickness often appears due to the problem of mould processing and the problem of the need of an operation platform, so that the filling efficiency of the operation platform anti-collision and damping rubber can be affected.

The invention relates to a liftable transfer trolley with a metal armored movable switchgear. The liftable transfer trolley with the metal armored movable switchgear comprises a supporting plate, a base plate and liftable mechanisms. Each liftable mechanism comprises a lifting threaded rod, a threaded rod locating sleeve of each lifting threaded rod, a lifting rotary disk and a threaded rod fixing sleeve, wherein each lifting threaded rod can carry out adjustable lifting, and is provided with external threads, each lifting rotary disk is arranged on the corresponding lifting threaded rod in a tightly sleeved mode, each threaded rod fixing sleeve comprises internal threads, and is connected with the corresponding lifting threaded rod, the threaded rod locating sleeves are fixed to the base plate, and the threaded rod fixing sleeves are fixed to the supporting plate. Each lifting threaded rod penetrates through a lifting threaded rod through hole formed in the base plate, the corresponding threaded rod locating sleeve and the corresponding lifting rotary disk, the end, close to the supporting plate, of each lifting threaded rod is fixed to the corresponding threaded rod fixing sleeve through the threads, the internal threads of each threaded rod fixing sleeve are used in cooperation with the external threads of the corresponding lifting threaded rod, and when the height of the liftable transfer trolley needs to be adjusted, the lifting rotary disks are manually rotated. According to the liftable transfer trolley with the metal armored movable switchgear, due to the fact that the liftable mechanisms are used for carrying out ascent and descent on the trolley arranged below a metal armored switch cabinet according to the requirement on the site, working efficiency is improved, and cost is reduced.

The invention provides an air tightness detection device used for water pump manufacturing. The device comprises a machine table, a rear end cover and a compressing bar; a left side of a front end face of the machine table is in hinge joint with a group of connection plate; a middle part of the connection plate is in threaded connection with a group of handle; three groups of the compressing barsare evenly arranged and connected on an external side of a lower end cover through hinge joint; one group of lifting connection rod is jointly connected under the three groups of the compressing barsthrough hinge joint; the lifting connection rod is in sliding connection with the machine table; the lifting connection rod is connected with one group of lifting threaded rod through an internal thread; and the lifting threaded rod is axially connected with the machine table. By controlling the compressing bar through the handle to compress a pump shell, operations are very simple, a good sealingeffect can be realized, the conventional mode of connecting an end cover through a flange to perform sealing is changed, works are simplified, working efficiency is improved, labor force is reduced,and meanwhile, the device provided by the invention is simple in structure and low-cost, and is suitable for being used in daily inspection of workshops.

The present invention discloses a drum circulatory high-capacity dried food stir-frying device which includes a heat preservation cover, two thread guiding rods, two lifting handles, two sliding sleeves, a material loading electric motor, a main shaft, a main material stirring cylinder, a material lifting cylinder, a heat preservation sleeve, and heating wires. The material loading electric motor is mounted on the bottom of an operating platform by bolts. The main shaft is arranged on the material loading electric motor. Helical blades are arranged at the bottom part of the main shaft. The main material stirring cylinder is arranged at the middle of the operating platform. Two screw barrels are arranged at the lower parts of the two sliding sleeves. Internal threads are arranged within the two screw barrels and are meshed with lifting threads. The material lifting cylinder is arranged within the main the material stirring cylinder, the helical blades are arranged at the outside of the main the material stirring cylinder, and the heat preservation cover is arranged at the upper part of the main the material stirring cylinder. A cover body handle is arranged on the heat preservation cover and is cone-shaped. Steam loss holes are arranged on the heat preservation cover. The drum circulatory high-capacity dried food stir-frying device can thoroughly circulatorily heat dried food, avoid the use of sand and other heat transfer medium, and is convenient for material loading and unloading, is suitable for various dried food, and is strong in universality.

The present invention discloses a low magnification and high magnification light-concentration solar cell. The solar cell comprises a box body and a containing slot arranged in the box body, wherein the opening of the containing slot is upward. The insides of the left inner wall and the right inner wall of the containing slot are interlinked, and the containing slot is provided with a first slide-guiding chute. The bottom of the containing slot is provided with a first cavity. The containing slot is slidably connected with a first slide-guiding block, wherein the containing slot is matched with the first slide-guiding block. The first slide-guiding chute is slidably connected with a second slide-guiding block, wherein the first slide-guiding chute is matched with the second slide-guiding block. The end face, near the first slide-guiding block, of the second slide-guiding block is fixedly connected with the corresponding end face of the first slide-guiding block. The second slide-guiding block is threadedly connected with a lifting threaded rod, wherein the lifting threaded rod extends up and down, and the second slide-guiding block is matched with lifting threaded rod. The bottom of the lifting threaded rod stretches into the first cavity, and the bottom of the lifting threaded rod is provided with a first belt wheel. The top of the lifting threaded rod stretches out of the topend face of the box body, and the top of the lifting threaded rod is provided with a second gear. The solar cell has the advantages of simple structure, stable regulation, good light-concentration effect, high energy conversion efficiency, stable magnification regulation and relatively-high practical performance.

The invention discloses a variable-compression-ratio piston with a driving mechanism. The problems that in the prior art, the compactness and the reliability are poor are overcome. The variable-compression-ratio piston is composed of a piston head upper body, a piston head lower body, a first transmission shaft, a second transmission shaft, a motor shaft and a motor, wherein the piston head upperbody and the piston head lower body are in separated type and are connected with each other through trapezoidal threads; the first transmission shaft is connected with the second transmission shaft through a straight-teeth bevel gear; the first transmission shaft is connected with the motor shaft through a planetary gear mechanism; a piston pin of the motor serves as a shell; the inner side of thepiston head upper body is connected with the outer side of the piston head lower body in a tightened mode through lifting threads; the piston head lower body, the piston pin and a piston pin hole arean integrated part from top to bottom; turning and synchronous rotating of the two transmission shafts are achieved through the straight-teeth bevel gear; torque which are output by the motor shaft is transmitted to the first transmission shaft through the planetary gear mechanism in a slow-down mode; the motor adopts the piston pin as the shell; and a rotor on the right side of the motor and theshaft are supported into a supporting hole in a piston pin clamping ring of the right end of the piston pin.

The invention discloses a natural gas tank installing fixing frame. The natural gas tank installing fixing frame comprises a main bottom plate. An elastic main fixing block is fixed to the middle portion of the top face of the main bottom plate. A containing arc groove is formed in the middle portion of the top face of the elastic main fixing block. A right supporting plate is fixed to the top face of the right side of the main bottom plate. A right limiting plate is arranged on the left side of the right supporting plate. An elastic end plate is fixed to the left side wall of the right limiting plate. A natural gas tank is inserted in the containing arc groove in a sleeved manner and presses and abuts against the bottom face of the containing arc groove. The elastic end plate presses andabuts against the right side end face of the natural gas tank. An upper supporting frame is fixed to the top face of the main bottom plate. An upper clamping motor is fixed to the top face of the middle portion of a top plate of the upper supporting frame. An output shaft of the upper clamping motor penetrates the bottom face of the top plate of the upper supporting frame and is in screw joint with a lifting thread sleeve, an upper lifting plate is fixed to the bottom end of the lifting thread sleeve, and an upper elastic clamping block is fixed to the bottom face of the upper lifting plate. The natural gas tank installing fixing frame can automatically clamp and fix the natural gas tank, installing and conveying are convenient, and the effect is good.

A vibration friction feed wheel mechanism for feeding thread to a thread processing machine having intermittent thread requirement. The feed wheel mechanism including a high friction contact surface, a thread guide level for lifting thread off of the feed wheel and a vibration generating arrangement for applying a vibrational movement to the thread. The vibration of the thread ensures that the thread lifts-off from the contact surface of the friction feed wheel by reducing the coefficient of friction between the thread and the high friction contact surface of the friction wheel.

The invention provides an anti-frost-heaving and anti-flooding device for water conservancy projects. The anti-frost-heaving and anti-flooding device comprises a dam, a fixed frame, a water level measuring frame structure, a gate protection structure, gate lifting threaded rods, an air heating device, a flood draining guide pipe structure, an intelligent control alarm device, a drainage gate structure and a lifting connecting rod, wherein the fixed frame is fixed to the upper portion of the dam, and the water level measuring frame structure is installed on the front surface of the dam through bolts. According to the anti-frost-heaving and anti-flooding device for the water conservancy projects, fixed cross rods and pulleys are arranged, so that a protection effect on a gate body is improved, and the gate body is prevented from being stuck in a sliding groove; the air heating case, an air pump and an air guide pipe are arranged, so that heated air can be conveyed into water, the probability of water surface icing is decreased, and the anti-frost-heaving effect is improved; and flood draining water inlet pipes are inserted into the left side and the right side of the lower portion inside a flood draining pipe installing frame, sundries entering a flood draining pipe from the water surface can be reduced, the filtering effect on sundries in water is further improved by means of a filter screen, and therefore the flood draining effect is improved.

The invention discloses a roller body lifting and adjusting carrying mechanism for fabric processing. The roller body lifting and adjusting carrying mechanism comprises a bottom plate; conveying guiderails are fixed to the top faces of the left side and the right side of the bottom plate; the conveying guide rails are sleeved with guiding through grooves formed in the bottom faces of moving blocks in an inserted mode; a horizontal plate is fixed to the top faces of the two moving blocks, and a lifting motor is fixed to the middle of the bottom face of the horizontal plate; and an output shaftof the lifting motor penetrates through the horizontal plate to be connected with a vertical screw rod through a coupling, the vertical screw rod is in threaded connection into a lifting thread sleeve, and a lifting plate is fixed to the top end of the lifting thread sleeve. The roller body lifting and adjusting carrying mechanism can be mounted between equipment and a roll body concentration place, and the height of supporting blocks of the roller body lifting and adjusting carrying mechanism can be adjusted to the most suitable height when people takes a roller body so that the dismounted roller body can be directly placed on the two supporting blocks, manual material putting by bending down after the roller body is taken down is not required, the roller body is placed on the supportingblocks and can be automatically conveyed to the roll body concentration place, the very convenient effect is achieved, pushing and conveying by using a carrying vehicle through manpower are not required, and the effect is good.

The invention discloses a modern safe box comprising a safe outer box body 100 and an accommodating groove 103 provided with an upward opening and formed in safe outer box body 100. Symmetrical firstslide-guiding grooves 101 are formed in the left inner wall and the right inner wall of the accommodating groove 103 in a communicating mode; a first cavity 109 is formed in the bottom of the accommodating groove 103, the interior of the accommodating groove 103 is in sliding fit connection with a safe inner box body 104, and the interiors of the first slide-guiding grooves 101 are in sliding fitconnection with first slide-guiding blocks 105; the end faces, close to the safe inner box body 104, of the first slide-guiding blocks 105 are fixedly connected with the corresponding end faces of thesafe inner box body 104; the interiors of the first slide-guiding blocks 105 are in threaded fit connection with first lifting threaded rods 102 extending up and down; and the extending tail ends ofthe tops of the first lifting threaded rods 102 are in rotating fit connection with the inner walls of the tops of the first slide-guiding grooves 101. The modern safe box is simple is structure, goodin stability, safe and reliable.

The invention discloses a traffic signal lamp for roads. The traffic signal lamp comprises a base, a substrate, a top plate, a power supply device, a signal lamp, a lifting threaded rod, a motor, an axle base and a limiting plate; the base is of a hollow structure, the motor is fixedly installed inside the base, the lower side of the substrate is fixedly connected with the base, the top end of thesubstrate is fixedly connected with one side of the top plate, the upper portion of one side of the substrate is fixedly connected with the axle base through a connecting rod, the lower portion of one side of the substrate is connected with one side of the limiting plate, a through hole is formed in the limiting plate, one end of the lifting threaded rod is rotationally connected with the axle base, the other end of the lifting threaded rod is connected with a coupler, the output end of the motor penetrates through the base to be connected with the coupler, a straight thread sleeve is fixedlyconnected to the back face of the signal lamp through a fixing rod, and the straight thread sleeve is cooperatively connected with the lifting thread rod. Due to the cooperative effect of the liftingthread rod and the straight thread sleeve, the height of the traffic signal lamp can be changed, the traffic signal lamp is convenient to overhaul, and by arranging the solar power supply device, theeffect of saving energy is achieved.

The invention discloses an expansion connecting piece. The expansion connecting piece comprises a lifting threaded rod, a side plate connecting piece and an expansion sleeve. The expansion sleeve is provided with an expansion portion and an adjustment portion. One end of the side plate connecting piece is connected with a connecting rod, and a nut is arranged at the opposite other end of the sideplate connecting piece. The lifting threaded rod comprises a threaded rod and a head portion, wherein the head portion is connected to one end of the threaded rod. The side plate connecting piece is in thread connection with the threaded rod though the nut. The side plate connecting piece and the lifting threaded rod are arranged inside the expansion sleeve. The nut is arranged in the expansion portion. The nut moves in the axial direction so as to enable the expansion portion to expand or contract to return to the original position. The adjustment portion is provided with a containing chamberfor containing the head portion of the lifting threaded rod. A radial adjustment hole is formed in the side wall of the adjustment portion. The containing chamber communicates with the adjustment hole. Gear teeth extending in the axial direction are arranged on the end face of the head portion of the lifting threaded rod. The gear teeth are evenly arranged in the circumferential direction of thehead portion in a spaced manner. A tooth groove is formed between every two adjacent two gear teeth. Compared with the prior art, the expansion connecting piece has the advantages of being simple in structure, easy to install and capable of being disassembled and assembled repeatedly.

Instrument chinrest device, method, and kit customized as to proper height, rigidity, shape, size, and placement. An assembled chinrest can include a topper having pins; a lift having lift topper holes corresponding to receive said topper pins and at least one lift hardware attachment hole; and lift hardware having at least one threaded barrel configured to receive at one end a first end of an upper lift threaded member and configured to receive at a second end a lower lift threaded member, said upper lift threaded member having a second end to attached within said lift hardware attachment hole whereby, when attached to said lift, the device is able to be clamped onto a top plate and bottom plate of the instrument. The kit can include a plurality of toppers and lifts to select from, as well as the tools to determine proper chinrest placement and shape.