62 results about "Ear washing" patented technology

The present invention provides one kind of cuboidal nanometer Pd material and its preparation process. The preparation process includes the following steps: mixing 10 mM concentration water solution of chloropalladic acid and 12.5-25 mM concentration water solution of ammonium hexadecyl trimethyl bride in the volume ratio of 1 to 20, heating to 65-95 deg.c, adding 100 mM concentration water solution of ascorbic acid in the volume ratio to the water solution of chloropalladic acid of 0.16 to 1 to react for 30 min, centrifugal separation to collect precipitate, water washing, and drying to obtain cuboidal nanometer Pd material. The process is simple, and the prepared cuboidal nanometer Pd material is used in catalyzing, preparing nanometer material and other fields.

The method of eliminating potassium impurity from molybdenum powder includes the following steps: the first hydrogen reduction of ammonium molybdate to produce molybdenum dioxide, sieving and the secondary hydrogen reduction to produce molybdenum powder; water washing or acid pickling molybdenum powder, solid-liquid separation, stoving and sieving to obtain the molybdenum powder product. One third hydrogen reduction step may be also added after stoving. The technological process is simple and has obvious effect of eliminate potassium impurity.

The invention provides a magnesium alloy nanometer injection molding process. The magnesium alloy nanometer injection molding process includes the steps of alkali washing, specifically, a magnesium alloy substrate is immersed in alkali liquid, and oil on the surface of the magnesium alloy substrate is removed; acid washing, specially, the magnesium alloy substrate is immersed in acid liquid to beneutralized and then is dried; T treatment, specifically, the magnesium alloy substrate is treated through weakly acidic T liquid, and nanoscale micropores are etched in the surface of the magnesium alloy substrate; water washing, specifically, the magnesium alloy substrate is placed in pure water to be cleaned and then is dried; injection molding, specifically, the magnesium alloy substrate is placed in an injection molding mold to be subjected to injection molding, plastic materials are combined with the micropores in the surface of the magnesium alloy substrate through injection molding, and thus the plastic materials and the magnesium alloy substrate are tightly combined, and a product blank is obtained; and annealing, specifically, within two hours after injection molding is completed, the product blank is placed in an oven to be baked for one hour at the temperature of 140-150 DEG C.

Therapeutic equipment for a cavity comprises a flexible medicine injecting pipe, wherein a medicine injecting hole is formed on the middle part of the flexible medicine injecting pipe; a bowl-shaped medicine discharging end is arranged on the top of the flexible medicine injecting pipe; an annular spray nozzle is formed on the periphery of the medicine discharging end; an inner sac and an outer sac are arranged on the flexible medicine injecting pipe; a magnet coated with a chitin coating is inlaid on the outer sac; an inner sac airway and an outer sac airway on the flexible medicine injecting pipe are communicated with the inner sac and the outer sac; a protective edge, and a push rod which is matched with the protective edge are arranged at the other end of the flexible medicine injecting pipe; air supply holes of the inner sac airway and the outer sac airway are formed on the protective edge; and the air supply holes are provided with ear-washing balls. The therapeutic equipment for the cavity are used for supplementing a medicine into vagina; in combination of physical therapy and magnetic therapy of chitin, and the medicine-supplementing device, the therapeutic equipment for the cavity combines multiple functions, is wide in application range, simple in structure, convenient to operate, sanitary, accurate in medicine applying position, and good in therapeutic effect; and the cross infection can be prevented.

The invention relates to an ear washing device, and especially relates to a clinical ear washing device for otology. The technical problems to be solved are to provide the clinical ear washing devicefor otology which is convenient for people to use and high in working efficiency and can dry the ears of a patient. The ear washing device includes a water storage assembly, a power assembly, a cleaning assembly and a fixing assembly; the power assembly is installed on the water storage assembly and provides power through rotation; the cleaning assembly is installed on the water storage assembly and carries out cleaning through rotation; and the fixing assembly is installed on the cleaning assembly and carries out fixation through pulling. Water required during cleaning can be stored through the water storage assembly; power can be provided by the power assembly when the ear walls of the patient are cleaned; cleaning can be carried out on the ear walls of the patient through the cleaning assembly; fixing can be performed by the fixing assembly when equipment is adjusted to the proper length; and the ear walls of the patient can be dried through second sponge sleeves after being cleaned.

The invention discloses an ear-washing machine and a control method thereof. A cleaning device comprises a casing and a cleaning part. The casing is divided into a sewage recycling cavity, a water storage cavity and an installation cavity by partition plates. A sewage recycling pump is arranged in the sewage recycling cavity, a water outlet pump is disposed in the water storage cavity, and a constant temperature heater is arranged between the water storage cavity and the water outlet pump. A controller for controlling the sewage recycling pump, the water outlet pump and the constant temperature heater is arranged in the installation cavity. The cleaning part comprises a nozzle, a handle and a water-conveying hose. The nozzle is detachably arranged at the front end of the handle, one end of the water-conveying hose penetrates the handle to be connected with the nozzle, and the other end of the water-conveying hose penetrates the casing to be detachably connected with the sewage recycling pump and the water outlet pump. The ear-washing machine can accurately control water pressure, jet velocity and water outlet temperature, a comfortable clean water flow is generated, and the ear-washing machine has a wastewater collecting function and is practical and portable.

The invention relates to a method for drawing color lines on a plate-type ceramic product to form a concave-convex embossment pattern. The method comprises the steps of green body finishing, water washing, biscuit firing, internal glazing, external glazing, natural drying, kiln firing. According to the method, a glazing manner and a needle line drawing manner are combined to form the concave-convex embossment pattern, namely, a transmutation glaze is adopted as a bottom glaze, a bright coloured glaze and a strong fusing agent form a hand drawing material, an ear washing bulb and a needle are utilized to draw lines and circles, after firing, the concave-convex embossment pattern appears, a diffusion feeling is achieved, an obtained glaze surface is natural, and the surface pattern and a glaze layer are more harmonious and richer; the transmutation glaze is adopted as the bottom glaze, the ear washing bulb and the needle are utilized to draw the line pattern to form the textile, the operation is simple, the product cost is low, the operation is meticulous, and the product quality reaches around 90%; and the technology has the advantages that the operation difficulty is extremely low, after firing, the product has no detect, and the integral brightness of the product is greatly improved on the contrary.

The invention relates to the technical field of medical apparatuses, in particular to a posterior cranium distraction and drainage device in the neurosurgery department. The posterior cranium distraction and drainage device comprises a bottom plate, a liquid storage tank, a supporting plate, an electric push rod, a transverse plate, a first installation rod, a first connecting rod, a second installation rod, a second connecting rod, a C-type plate, a rectangular slider, a distraction plate, a fixed base, a drainage tube and an ear washing ball. In the posterior cranium distraction and drainagedevice, brain nerves can be effectively fixed through a sawtooth-shaped structure at the bottom of the distraction plate, the phenomenon that the brain nerves slip off the supporting plate is reduced, the separation of the brain nerves to the maximum extent is ensured, and it is ensured that surgery is normally conducted; after the ear washing ball is squeezed, the ear washing ball is inserted inthe other end of the drainage tube, through the fluid pressure intensity difference, hydrops in a brain are smoothly sucked out, and the posterior cranium brain tissue is protected against injuries;the ear washing ball is squeezed through different squeezing intensity, and the pumping speed of posterior cranium intracerebral hydrops by the drainage tube can be controlled; the elongation of an electric push rod is adjusted, and the aim of adjusting the installation heights of the distraction plate and the drainage tube can be realized.

The invention discloses a method for manufacturing an ear washing bulb pressure fine-adjustment device. The device comprises 1, a housing, 2, an ear washing bulb, 3, bolts / nuts and 4, a protection sleeve. The method comprises processing two opposite surfaces of the housing to form circular holes in the surface centers, wherein a long nozzle of the ear washing bulb goes through one of the circular holes and the bolt with the protection sleeve goes through the other one of the circular holes, polishing the outer side of the circular hole at the bolt end to form a nut-shaped shallow groove and fixing the nut through glue. The pressure fine-adjustment device is prepared from organic glass or waste and old plastic, the raw materials save energy and are environmentally friendly, manufacturing and operation processes are simple, the pressure fine-adjustment device can be used for controlling most of micro-liquids, and the pressure fine-adjustment device can guarantee smooth and accurate experiment process.

The invention discloses a sterile water sample collecting bottle for detection. The sterile water sample collecting bottle comprises a bottle body, an ear washing bulb, a water inlet pipe and a water level monitoring hole, wherein the ear washing bulb is arranged at a bottle mouth of the bottle body and is used for water absorption drainage during water sample collection; the water inlet pipe is arranged on the other side of the ear washing bulb and is lower than the ear washing bulb; the collected water sample enters the bottle body through the water inlet pipe; both the ear washing bulb and the water inlet pipe can be disassembled; after the ear washing bulb and the water inlet pipe are disassembled, the two connecting parts on the bottle body can be sealed, so that sterility is guaranteed; the bottle body is also internally provided with the water level monitoring hole used for monitoring the water level in the bottle body. The sterile water sample collecting bottle for detection is simple in structure, convenient to use and low in cost, and is capable of guaranteeing sterility during water sample collection, thus being suitable for water sample collection of water quality microbiological detection.

A liquid transfer tube comprises a liquid transfer tube body, a ground plug cock and a breathable filter element, wherein scales are arranged on the liquid transfer tube body, a plug cock groove formed in the upper end of the scales of the liquid transfer tube body, the ground plug cock is accommodated in the plug cock groove formed in the liquid transfer tube body and is provided with a through hole communicated with the liquid transfer tube body, and the breathable filter element is arranged in the through hole.The liquid transfer tube conveniently measures liquid volume through the ground plug cock with the filter element and is simple in operation and controllable in speed, and the phenomenon that liquid is sucked into an ear washing ball or is suddenly ejected out when the ear washing ball is overexerted can be avoided.In addition, air can be filtered, and the air in the ear washing ball can be prevented from carrying impurities.The liquid transfer tube is simple in operation and is unlikely to cause liquid transfer failure.

The invention discloses a medical ear washing cotton swab, which comprises a cotton swab head and a cotton swab stick. The ring groove, the cotton swab stick is provided with evenly distributed liquid suction holes at the head end of the cotton swab, and the baffle is set on the cotton swab stick. The present invention has the advantages that: the cotton swab is used to inject a small amount of liquid medicine into the auditory canal for cleaning the pus, and a baffle is provided to avoid too deep insertion.

The invention provides an ear washing ball and relates to the technical field of medical instruments. The ear washing ball comprises an oval sacculus. One end of the oval sacculus forms a pressing plane, and the other end of the oval sacculus extends to form a straw. The straw is communicated with a containing cavity in the oval sacculus. The ear washing ball is characterized in that ribs are arranged on the outer wall of the oval sacculus, a stiffening ring is arranged on the outer wall of the middle portion of the oval sacculus, and outer wall of the middle portion of the oval sacculus is arranged around the peripheral direction of the oval sacculus. The ear washing ball has the advantages of guaranteeing excellent electricity on the premise of being soft and enabling a negative pressure suction effect to be greatly improved.

The invention discloses a processing material for an ear washing ball applied to chemical pharmaceutical analysis and relates to the technical field of analysis products. The processing material is prepared from, by weight, 25-30 parts of polyether rubber powder, 10-15 parts of novolac epoxy, 8-12 parts of terpene resin, 6-11 parts of rosin pentaerythrityl ester, 5-9 parts of teflon, 4-8 parts of volcanic ash, 4-8 parts of ethylene-eva ethylene, 4-8 parts of butyral resin, 3-6 parts of asbestos wool, 3-6 parts of petrol coke powder, 3-6 parts of polyvinyl acetate, 2-4 parts of camellia sinensis, 2-4 parts of portland cement, 2-4 parts of bamboo powder, 1-2 parts of molecular sieve powder, 1-2 parts of sulfide lard, 1-2 parts of polytetrahydrofuran, 1-2 parts of epoxidized soybean oil, 0.5-1 part of glass fiber powder, 0.5-1 part of terpilenol, 0.5-1 part of polyamide wax, 0.3-0.5 part of nanometer antimony trioxide and 0.3-0.5 part of stannous pyrophosphate. The processing material is good in processing forming, high in toughness, good in corrosion resistance, pressure resistance, abrasion resistance and weather resistance and capable of being recycled, and waste of resources is reduced.

The invention belongs to the field of a building material, and particularly relates to a portable device and method for measuring content of a solid-state suspension substance of sewage. The device comprises a water collection bottle and a water storage bottle, wherein a water sample filtering film is arranged between the water collection bottle and the water storage bottle, a first water bottle opening and a second water bottle opening are formed in an upper end surface of the water collection bottle, a water storage bottle opening is formed in an upper end surface of the water storage bottle, a water discharging hole is formed in the bottom of the water storage bottle, the first water collection bottle opening is connected with a rubber water guide pipe when a water sample is taken, therubber water guide pipe is used for absorbing a water sample to be measured, a gas in the water collection bottle is discharged by the second water collection bottle opening so that a water sample tobe detected enters the water collection bottle by the rubber water guide pipe, the gas of the water storage bottle is discharged out of the water storage bottle opening when the water sample is filtered, and the gas enters through the second water collection bottle opening so that the sewage is filtered. In the device, a plurality of openings capable of being flexibly opened are formed, the rubberwater guide pipe or an ear washing ball can be additionally arranged, and the function of water taking or filtering can be achieved by a combination mode of adjusting each opening according to air pressure difference provided by the ear washing ball.

The invention discloses a neodymium iron boron casting strip section metallographic analysis sample making method. The method is carried out by the steps of: 1) sampling: selecting one side that is perpendicular to a sticking roll surface and has clear and visible stria and evenly distributed gaps and breaking it off to obtain a casting strip section, using needle-nose pliers to conduct flatness finishing on the section; 2) casting strip polishing: grinding and polishing the casting strip section on different abrasive paper in order toward a same direction; 3) casting strip section corrosion: using an etching agent to corrode the polished surface; and 4) casting strip section cleaning: employing anhydrous ethanol to clean the corroded surface, and conducting blow drying with ear washing bulbs, thus obtaining a metallographic sample. The method provided by the invention does not involve inlaying, saves the sample making cost, the making process is controlled within 15min in a fastest way, and the qualification rate and efficiency of casting strip section metallographic analysis sample making are greatly improved.

The invention discloses an earwax cleaning device integrating mechanical scraping and ear washing functions, the earwax cleaning device is composed of an extension rod and an execution device, the extension rod comprises a holding rod 12, the execution device is arranged on the right side of the holding rod 12, a push rod (21) is slidably connected in the holding rod (12), the right side of the holding rod (12) is fixedly connected with a disc (11), a sliding rod (17) is connected to a sliding rod in sliding on the right side face of the disc (11), scrapers (16) are fixedly connected to the sliding rod (17), two spring fixing blocks (18) are fixedly connected to the sliding rod (17), springs are fixedly connected between the spring fixing blocks (18) and a sliding way, and through the six telescopic scrapers, when entering the ear canal, the ear canal does not touch the inner wall, and the use action of the device is stipulated, so that the injury to the inner wall of the ear canal, the tympanic membrane and the incus caused by the shaking of the hand can be avoided to a greater extent.

The invention discloses a sample preparation method for detecting the particle size of blast furnace slag particles. The method comprises the following steps: putting a small amount of blast furnace slag powder sample into absolute ethyl alcohol, carrying out ultrasonic oscillation for 10-15 minutes, taking a small amount of suspension, dripping the suspension on an auxiliary metal sample adheredwith a conductive carbon adhesive, standing, and blowing an ear washing ball after the sample is solidified and dried, so as to obtain a sample for detection and analysis by putting a scanning electron microscope. According to the sample preparation method, powder samples are dispersed, agglomeration of the powder samples is reduced, the actual particle size of powder is reduced, and therefore particle size analysis errors are reduced, and meanwhile, electron microscope dust pollution is reduced.

The invention discloses a powder sample preparation method for a low-temperature fluorescence test. The powder sample preparation method comprises steps that: 1) a double-sided conductive copper adhesive tape is adhered on the black paper; 2) the powder sample is adhered on the double-sided conductive copper adhesive tape; 3) a tabletting die of an infrared spectrometer and a manual tabletting machine are used for pressing for 1-2 min under the pressure of 5 MPa; 4) a grinding tool is taken out to obtain a sample piece, and an uncompacted powder sample is blown off by using an ear washing ball; 5) the base of the sample piece strip is fixedly disposed on the center of the clamp. According to the invention, expensive and fragile quartz plates are not required in the whole sample preparationprocess, so that the experiment cost is saved, the difficulty in mounting samples is reduced, and the experiment safety is improved; secondly, the stray light can be greatly reduced after the powderis tabletted, so that interference factors of fluorescence signals are reduced; finally, after the powder is pressed into tablets, the optical density incident to the surface of the sample is greatlyimproved, the fluorescence intensity of the sample with weak fluorescence signal can be improved, and the slit can be reduced to improve the resolution of the fluorescence spectrum of the sample withstrong fluorescence signal.

The invention relates to a medical instrument, in particular to a gynecological cleaning doser which comprises a pushing device, a dosing device and a cleaning solution device. When a focus is firstlycleaned, the cleaning solution device only needs to be mounted, cleaning solution is fed, and an ear washing bulb is pressed to pressurize a pressure hose and a cleaning solution sleeve, so that thefocus is cleaned. When medicines are applied after cleaning, the cleaning solution device only needs to be removed, and the dosing device is used for applying the medicines. The gynecological cleaningdoser serving as an integrally structured medical instrument is simple in structure, low in manufacturing cost, safe and reliable, and the labor intensity of medical staff or patients can be effectively reduced.

The invention relates to refractive index measurement, in particular to a method for achieving liquid refractive index measurement through Newton rings. The technical scheme is that the top of a coneis attached to the circle center of a cylinder inner side bottom face circle; the included angle between the conical side surface and the conical bottom surface is 0.1-0.2 degree; a diameter marking line is marked on a circular surface of the cone, the diameters Dm and Dk of m-level dark fringes and k-level dark fringes of the Newton rings are measured in the direction of the diameter marking line, m and k are both positive integers, k is larger than m, and the diameter difference d1 is calculated according to the formula that d1=Dk-Dm; liquid is injected into a water pipe, an ear washing ballis connected to an opening of the water pipe, the ear washing ball is gently pressed such that liquid is uniformly distributed in a gap between the cone and a bottom surface of the cylinder, the diameters Dm and Dk of m-level dark fringes and k-level dark fringes of the Newton rings are measured again along the direction of the diameter marker line 5, and the diameter difference dn=Dk-Dm is calculated; the refractive index n of the liquid is equal to d1 / dn. The Newton rings are distributed at equal intervals.

The invention provides an ear washing liquid and a preparation method thereof. The ear washing liquid mainly comprises the raw materials of fresh abutilon indicum, fresh artemisia apiacea, fresh andrographis paniculata, fresh grapefruit leaf, fresh mint, fresh saxifraga stolonifera, fresh kudzu, fresh lophatherum gracile, fresh cordate houttuynia, fresh honeysuckle rattan, and fresh dandelion, and is prepared according to the processes of primary distilling, decocting, redistilling and the like. The ear washing liquid has a better absorption effect, has the obvious effects of sterilizing and diminishing inflammation, is strong in adaption, plays a role in sterilizing and diminishing inflammation of most ear inflammation, is reasonable in formula, simple in manufacturing process, high in safety, and free of toxic or side effect and other untoward effects, and has a quite excellent development and application prospect, and is suitable for large-scale popularization and application.

The invention relates to a keyboard cleaner which is in the shape of a triangular prism. The keyboard cleaner comprises a waste liquid recycling device, a push button, a static generator, an ear washing ball, a hair brush, a cleaning liquid storage and a nozzle. The keyboard cleaner is characterized in that the ear washing ball is installed at the bottom of the triangular prism, the hair brush and the static generator are arranged from bottom to top on one lateral face, a groove is arranged between the hair brush and the static generator, the hair brush is connected with the lower end of an opening of the groove, the push button is connected with the upper end of the hair brush, the cleaning liquid storage, cleaning head parts and the nozzle are arranged from top to bottom on another lateral face of the triangular prism, the waste liquid recycling device and a waste liquid discharge port are arranged at the top, an operation opening is arranged on the tail portion of the ear washing ball, and the tail end of the ear washing ball extends into the waste liquid recycling device. The keyboard cleaner enables cleaning of keyboards to be complete, is abundant in function and convenient to use, brings convenience to people and removes troubles of the people due to the fact that the work and mood of the people are not affected by pollution of the keyboards when the people use computers.

The invention relates to a novel scar remediation fingerstall which comprises a fingerstall body which takes the shape accordant with that of a finger, wherein hemispheric first convex parts which protrude out of the hole wall are arranged on the hole wall of a finger hole; the first convex parts are arranged on the hole wall at uniform intervals; an air inlet is formed in the inner end of the finger hole; the air inlet is communicated with the air outlet of a first ear washing bulb through a first air tube. By adopting the fingerstall, decomposition and volatilization of active components can be effectively retarded, and the utilization rates of a remediation liquid and a recovery liquid can be increased, so that the scar remediation and beautifying cost can be lowered.

The invention belongs to the technical field of biological experiment equipment, and particularly relates to a sampling device for regularly detecting microorganisms, which comprises an injection tube made of a cleanable material, a needle head communicated with and detachably arranged at the head end of the injection tube; a push rod arranged in the injection tube, a sampling bag detachably sleeved on a liquid separation hole which is formed in the position, close to the needle head, of the side wall of the injection tube, and extrusion assemblies comprising pressing plates, handles and movable rods, the number of the extrusion assemblies is at least two, the extrusion assemblies are evenly distributed around the outer portion of the injection tube, and the pressing plate of one extrusion assembly can make contact with the sampling bag. According to the device, ear washing bulbs are not needed in the whole sampling process, the taken microorganism sample liquid is directly stored in the sampling bag and does not need to be transferred again, and the risk of microorganism sample liquid pollution is reduced.

The invention discloses a photoelectric automatic centering machine for a water washing, tilting, drying and pre-shrinking machine. The photoelectric automatic centering machine comprises a main photoelectric automatic centering machine body; a driving distribution roller, an upper distribution roller and a lower distribution roller are arranged at the upper part of the main photoelectric automatic centering machine body; two ends of the driving distribution roller, two ends of the upper distribution roller and two ends of the lower distribution roller are arranged on the main photoelectric automatic centering machine body; the driving distribution roller is located between the upper distribution roller and the lower distribution roller; a first swing arm, a second swing arm and an air cylinder are arranged at the lower part of the main photoelectric automatic centering machine body; two inner bearing passive cloth guiding rollers are arranged on the first swing arm and the second swing arm; and two ends of the two inner bearing passive cloth guiding rollers are connected with the lower part of the first swing arm and the lower part of the second swing arm. The centering machine is reasonable in structural design, an electric eye can detect leftward and rightward deviation of cloth timely, the loss caused by the deviation of the cloth can be avoided, meanwhile, the two inner bearing passive cloth guiding rollers can realize the deviation correction effect through the air cylinder, and the production efficiency of the cloth is guaranteed.

The invention relates to the technical field of otology nursing, and discloses an otology clinical ear washing device. The otology clinical ear washing device comprises a protective shell, an ear scraping assembly and a washing assembly; an in-ear rod is fixedly installed on the inner wall of the top of the protective shell; and the inner wall of the protective shell is movably connected with the outer wall of the ear scraping assembly. According to the otology clinical ear washing device, through cooperative use of all structures in the scraping assembly, when a user needs to wash an ear of a patient with an ear canal to be washed, a scraping plate outside a push rod can be opened in an umbrella shape only by slightly pushing the push rod, and therefore an inner ear canal can be conveniently cleaned and scraped; the washing assembly is arranged, cleaning water in a water storage box can be discharged from the bottom of the scraping plate while the scraping plate is pushed by the ear scraping assembly to be opened in an umbrella shape, so that the inner wall of the ear canal can be wetted by water during scraping, objects to be cleaned in the ear canal can be easily attached to the upper part of the scraping plate, and the ear washing efficiency is further improved.

The invention discloses a medical ear washing device which comprises a base, a support plate and a container, wherein the support plate is fixed at the top of the base; the container is used for containing normal saline; a hose communicated with the inner cavity of the container is fixed at the bottom of the container; a washing tube is fixed at an end of the hose; a control valve is mounted on the outer wall of the washing tube; a hollow tube is fixed on the outer wall of the left side of the support plate in a length direction of the support plate; a column body is moveably arranged in the inner cavity of the hollow tube; a connecting block which extends outside the hollow tube and is connected with the container is fixed at the top of the column body; a transverse plate is fixed on theouter wall of the right side of the support plate; a fixing base is fixed on the transverse plate; a rotating rod is rotationally arranged on the fixing base; a winding reel is fixed at one end of therotating rod; an L-shaped rocker rod is fixed at the other end of the rotating rod; a fixed pulley is mounted at the top of the support plate; a wire which winds cross the fixed pulley and is connected with the top of the column body is wound on the winding reel; a stripy groove in which the connecting block slides is formed in the outer wall of the hollow tube.