291results about How to "Fast fixation" patented technology

The present invention relates to one kind of functional biological carbon fiber and its preparation process and application as biomembrane carrier. The biomembrane carrier is prepared with polyacrylonitrile carbon fiber, and through electrochemical surface treatment in 5-20 % concentration ammonium bicarbonate electrolyte to increase the surface acid oxygen containing functional groups and raise wettability, and gluing with water soluble epoxy resin in the amount 0.5-2 %. The biomembrane carrier can fix nitrobacteria, sulfate reducing bacteria and anaerobic methanogen. It may be used in treating high concentration acrylon waste water, and can eliminate sulfate, COD and ammonia nitrogen effectively. In addition, the biomembrane carrier is easy to regenerate and has no secondary pollution.

A toner obtained by a method for producing a toner, which includes dissolving or dispersing in an organic solvent a toner material containing at least a binder resin, and a dispersion liquid of a crystalline polyester resin, so as to prepare a solution or dispersion liquid of the toner material, emulsifying or dispersing the solution or dispersion liquid of the toner material in an aqueous medium, so as to prepare an emulsion or dispersion liquid, and removing the organic solvent from the emulsion or dispersion liquid, wherein the crystalline polyester resin is localized near a surface of the toner.

The invention relates to a full-automatic high-altitude window cleaning intelligent robot. The robot comprises a self-stabilizing travelling device with good fixation performance and stability performance. The condition of jittering in the wiping process is eliminated, and the working efficiency is improved. A detachable fixing device is mounted in the middle of the upper end face of the self-stabilizing travelling device and can be disassembled and assembled conveniently. When the robot is damaged and needs to be maintained, the robot can be manually disassembled through the detachable fixing device, only the damaged part needs to be taken out and maintained, and operation is easy and convenient. An orientable conversion device is mounted at the upper end of the detachable fixing device, and the wiping angle of the orientable conversion device is adjustable, so that the robot is applicable to high-altitude glass of different angles, and the application range is wide. A window cleaning manipulator is mounted on the upper end face of the orientable conversion device. The full-automatic high-altitude window cleaning intelligent robot can achieve the full-automatic cleaning function of high-altitude glass, and a new way to full-automatic cleaning of high-altitude glass is provided.

The invention discloses a biological active carrier preparation and appliance of carbon fiber composite polyurethane, which is characterized by the following: basing on adding modified active carbon fiber and microbe culture medium in the polyurethane foam foaming course; integrating super strong adsorbability and biological affinity to be easy fixed and increasing and metabolism for microbe on the carrier; improving the moulding of superior microbe group; shortening the fixing and exercising period.

The invention discloses printing ink which comprises the following materials in parts by weight, 20-40 parts of pigments, 20-40 parts of binders, 25-45 parts of solvents, 1-2 parts of calcium carbonate, 1-3 parts of defoaming agents, 1-3 parts of flatting agents, 2-6 parts of 5A molecular sieves, 1-2 parts of fumed silica, 2-6 parts of dispersing agents, 0.5-1.5 parts of adhesion promoters, 2-5 parts of gummy oil, 1-3 parts of slipping agents, 1-4 parts of adhesives and 1-3 parts of hydrotalcite. The adhesion force of the ink can be enhanced, ink penetration and ink permeability of the ink are prevented, and the ink is high in chemical stability, long in storage time and stable in printing performance.

The invention relates to a producing method for a rosin modified phenolic resin. The technology program is: doing an addition reation of trans-butene diacid and rosin, reacting paraform and alkyl phenol-dodecyl phenol and 4-tert-Octylphenol, doing a cyclization reaction of methylol phenol and rosin and its addition compound in the temperature raising process, finially esterifying the pentaerythritol in a high temperature. The proportion is (wt.%): rosin 50-55, dodecyl phenol 12-17, trans-butene diacid 1-4, 4-tert-Octylphenol 10-15, pentaerythritol 8-12, polyformaldehyde 8-13, magnesia 0.08-0.20. The invention adopts the Diels-Alder addition reaction of trans-butene diacid and rosin to enhance the molecule structure of the rosin and increase the viscidity and softening-point of resin. Meanwhile, it reacts with long-chain alkyl phenol and 4-tert-Octylphenol in the existence of rosin and its addition. The craft is simple and the product is highly-purified.

The invention relates to environment-friendly offset ink and a preparation method thereof and aims to provide environment-friendly offset ink which is excellent in solubility, good in drying permeability and storage stability and capable of meeting the requirement for the wet offset printability. The offset ink is prepared from the following substances in parts by mass: 60-70 parts of binding materials, 2-5 parts of vegetable oil fatty acid ester, 2-5 parts of dibasic acid ester, 15-18 parts of pigment, 5-8 parts of filler, 0.2-1 part of thickening and rheological agent, 0.4-2 parts of wear-resistant agent and 0.3-1 part of drier. The environment-friendly offset ink provided by the invention is energy-saving, environment-friendly and easy to degrade and regenerate. After being used for printing, the ink is high in setting and drying speeds, high in glossiness, suitable for high-speed web offset printing, favorable in printability and capable of achieving the same printing effect with the traditional mineral oil web offset ink.

The invention relates to application of functional biological carbon fiber. The carbon fiber of which the surface contact angle is 50 to 180 degrees and the range of equilibrium moisture content is 1.0 to 5.9 percent is adopted as a biofilm carrier. The biofilm carrier can rapidly fix nitrobacteria, denitrifying bacteria, sulfatereducting bacteria and anaerobic methanogens. Acrylic and other high-concentration production wastewater is treated mainly through two-phase anaerobic / aerobic nitration and other processes, so that sulfate, COD, BOD, ammonia nitrogen and nitrate nitrogen can be effectively reduced and removed. In addition, a regeneration method of the biofilm carrier is simple and easy to apply and free from secondary pollution. The invention is particularly applicable to the biological treatment of acrylic wastewater and other industrial wastewater with high sulfate, high COD, low carbon-sulfur ratio and substances difficult to biodegrade.

The invention discloses a nail catcher leading-out cover plate of a bead nailing machine. The nail catcher leading-out cover plate of the bead nailing machine comprises a main cover plate body, wherein the main cover plate body covers a conveying groove block; a nail catcher guide rail is arranged on a covering surface of the main cover plate body; when being covered, the nail catcher guide rail is arranged in the middle of a main groove of the conveying groove block; surplus grooves are formed in two sides of the nail catcher guide rail of the main cover plate body; a nail catcher hole is formed in the main cover plate and located in the end of the nail catcher guide rail; four fixing holes are formed in the main cover plate body, and are respectively pairwise formed in two sides of the main cover plate body; the two fixing holes close to a nail catcher inlet are eccentrically formed in a rotation block respectively; the rotation block is embedded in the main cover plate body. Compared with the prior art, the nail catcher leading-out cover plate of the bead nailing machine can be quickly mounted and fixed, the mounting time and the fixing time are saved; the efficiency is improved; meanwhile, the scrapping of the nail catcher leading-out cover plate is avoided even if the machining accuracy has a slight deviation.

The invention discloses an outer collarbone fixator with a locking joint, consisting of an outer fixator frame body, a steel needle fixing clamp and threaded half needles, wherein the steel needle fixing clamping is connected to the outer fixator frame body; the threaded half needles are clamped in the steel needle fixing clamp; the outer fixator frame body consists of two threaded connecting rods and the locking joint which is used for hinging and connecting the two threaded connecting rods; the locking joint consists of a locking joint part A, a locking joint part B and an adjusting bolt; one end of the locking joint part A is an internal threaded pipe which is used for connecting with the threaded connecting pipe; a hinge hole is formed in the other end of the locking joint part A; one end of the locking joint part B is an internal threaded pipe which is used for connecting with the threaded connecting rod; a threaded hole is formed in the other end of the locking joint part B; the adjusting bolt passes through the hinge hole in the locking joint part A and is in thread connection with the threaded hole in the locking joint part B. According to the outer collarbone fixator with the locking joint, the structural form that the two threaded connecting rods and the locking joint are used is adopted, the collarbone anatomy and mechanics characteristics are conformed to, and the whole structure conforms to the anatomy requirement of the collarbone better.

The invention relates to a formula, a preparation technology and an application of an offset printing ink. The formula of the offset printing ink comprises, by mass, 30-40% of resin oil, 20-30% of gummy oil, 5-10% of a filler, 15-20% of a pigment, 0.3% of a drying agent and 1-5% of an assistant 1#, wherein the resin oil can be a phenolic resin or an alkyd resin; the pigment can be an organic pigment; the filler can be calcium carbonate; the assistant 1# can be an antioxidant; and the gummy oil can be phenolic resin oil or octyl phenol resin oil. The preparation technology comprises the following steps: adding the above raw materials to a bucket according to the formula, stirring for 40min, grinding after the obtained stirred mixture is qualified, adjusting indexes of the mixture after the fine of the mixture is qualified, and packaging after the indexes are qualified. The offset printing ink can be applied to paper printing. The offset printing ink has the advantages of strong luster, fast fixation speed, low cost, good wear resistance and cost saving.

The present invention discloses a novel European-style oil fume suction machine oil guide structure, which comprises an external oil network and a network frame positionedly arranged on the inner side of the external oil network, the external oil network and the network frame are respectively provided with a plurality of first ventilation holes and a plurality of third ventilation holes, the first ventilation holes and the third ventilation holes are penetrating, oil guide concave grooves are formed on the peripheries of the first ventilation holes, the openings of the oil guide concave grooves are toward to the internal of the oil fume suction machine, the plurality of the oil guide concave grooves are communicated to form a path for oil droplet flowing, the external oil network and the network frame are matched concave chambers having the truncated rectangular pyramid, the network frame is removably arranged on the inner side of the external oil network through a locking fixation member, and a plurality of flat-like internal oil networks are positionedly arranged between the external oil network and the network frame. With the installation manner of the present invention, the internal oil network can be rapidly arranged and fixed, and the exchange and the cleaning of the internal oil network are convenient so as to ensure the normal use of the oil fume suction machine.

The invention discloses a vacuum gold-plated primer which comprises the following components in percentage by mass: 55 to 60 percent of alcohol acid modified urethane oil, 20 to 25 percent of rosin modified phenolic resin, 1 to 2 percent of a dryer, 1 to 2 percent of an anti-skinning agent, 0.3 to 0.4 percent of organic modified nano SiO2, 0.2 to 0.3 percent of organic modified nano graphene and 11 to 22 percent of No.200 solvent oil. The alcohol acid modified urethane oil is prepared from the following components in percentage by mass: 5 to 10 percent of linseed oil, 1 to 5 percent of soybean oil, 10 to 15 percent of stillingia oil, 5 to 10 percent of pentaerythritol, 15 to 20 percent of toluene diisocynate and 40 to 64 percent of No.200 solvent oil. The vacuum gold-plated primer disclosed by the invention has the advantages of low cost, good adhesive force, high hardness, excellent heat resistance, controllable curing time, bright and full surface, high convenience in construction and the like and is suitable for industrial production.

The invention relates to aluminum veneer cutting equipment. The aluminum veneer cutting equipment comprises a feeding cutting device supported by multiple stand columns. The feeding cutting device comprises a straight bottom plate; side plates are perpendicularly and fixedly connected to the two sides of the bottom plate respectively; a guide rod with a sliding sleeve is erected and installed on the inner side of one of the side plates; a lead screw with a nut is erected and installed on the inner side of the other side plate; a first motor for driving the lead screw to rotate is installed on one of the side plate; a cross beam is fixedly erected and connected between the sliding sleeve and the nut; multiple vertical first air cylinders are fixedly installed on the cross beam; a pressure block made of rubber is arranged at the bottom end of a piston rod of each first air cylinder; multiple constant-height supporting rollers are fixedly installed on the upper surface of the bottom plate to form a supporting array; multiple parallel strip-shaped holes are formed in the middle of the bottom plate; a rotary shaft with multiple saw webs in the middle and a driven chain wheel at one end is erected between the middles of the two side plates; the upper edges of the saw webs are located in the strip-shaped holes respectively. The aluminum veneer cutting equipment further comprises a second motor for driving the rotary shaft to rotate.

The invention provides an accident spot map generation method based on an electronic map and a data acquisition system and relates to the technical field of traffic accident spot information acquisition and analysis application. The accident spot map generation method requires the following components: a GPS positioning device, a data acquisition system and an operation treatment system, wherein the GPS positioning device is used for acquiring the position information of accident spots; the data acquisition system is used for acquiring the distance information and the angle information between an accident spot measurement site and a data information to-be-detected site, and particularly comprises a distance measuring module and an angle measuring module; the operation treatment system is used for processing the acquired distance information and angle information. Satellite images near the measurement site are acquired through the electronic map, and together with the image processing technology, an equal-proportion traffic accident spot map is created to provide more scientific, simpler and more convenient technical measures for traffic accident field survey and traffic accident spot map drawing.

The invention discloses a skid for welding of an automobile body, and belongs to the field of welding tools. The skid for welding of the automobile body comprises a skid body, wherein the skid body comprises sliding rails, locating mechanisms, a clamping mechanism and a jacking mechanism; the number of the sliding rails is two, and the two sliding rails are arranged in parallel in the left and right direction; the locating mechanisms, the clamping mechanism and the jacking mechanism are sequentially arranged between the two sliding rails in parallel; the number of the locating mechanisms is two, and the two locating mechanisms are fixed to the two ends of the sliding rails; each locating mechanism comprises a fixing board and a locating block; the locating blocks are located at the bottom ends of the fixing boards; the clamping mechanism comprises a first sliding block and locating blocks, the number of the locating blocks is two, and the locating blocks are of an L-type structure and are symmetrically fixed to the first sliding block; the first sliding block is of a structure shaped like a reversed Chinese character 'ji', and comprises a square connection board and supporting boards, and the supporting boards are fixed to the two ends of the top of the connection board; the jacking mechanism comprises a second sliding block and square table pillars. The skid for welding of the automobile body lowers the production cost, relieves the labor intensity of operation staff and is stable and reliable in structure.

The invention discloses an airing device for hawthorn processing. The airing device comprises an airing rack body, wherein a positioning bolt is mounted at the position, close to one side of a connecting rod, of the top end of the airing rack body in an embedded manner; a placement plate is fixedly mounted at the top of the connecting rod; a clamping device is mounted in the connecting rod in an embedded manner; and a second support plate is rotatably connected with the position, close to a position above the placement plate, of the rear side of a second fixing rod. Through arranging the clamping device, a worker can conveniently and quickly fix and detach the airing rack body, so that the detaching time of the airing rack body is shortened; in addition, hawthorn can be aired through a first support plate and the second support plate; the first support plate and the second support plate can be accommodated after being used, so that the occupied area of the first support plate and the second support plate is reduced; and moreover, through supporting legs, the positioning bolt and a screw hole, the stability and safety of the airing rack body can be improved when the airing rack bodyis used for airing hawthorn.

The invention discloses a mounting method for a sill anchor combined support frame for a steel structure shear wall and an outer frame column base of a super high-rise building. The method comprises the following steps of: S1, paying off at the position of the sill anchor combined support frame after civil foundation bed construction is finished; S2, mounting a transition rack at a proper position; S3, assembling an anchor bolt stock, an anchor bolt and an anchor bolt penetrating rack into an anchor bolt component, and placing the anchor bolt component on the transition rack; S4, preserving slot templates on a steel plate wall or a steel column foot base anti-shear component; S5, performing a primary calibration on the perpendicularity, the planimetric position and the anchor bolt top elevation of the overall anchor bolt component; S6, performing a secondary calibration on the perpendicularity and the elevation of the anchor bolt in the anchor bolt component before pouring concretes; and S8, pouring building foundation concretes. The mounting method has the advantages of assembling the sill anchor combined support off site so as to reduce in-site cross operation, flexibly adjusting the sill anchor combined support according the practical situation on site, greatly improving the construction efficiency and the like.

The invention discloses a high-voltage electric cable detection device, and belongs to the technical field of electric power detection. The high-voltage electric cable detection device comprises a fixing frame, an electric cable clamping assembly and a voltage detection assembly. The fixing frame is of a U-shaped structure, the electric cable clamping assembly comprises a driving component and twoclamping plates, the two clamping plates are of V-shaped structures, antislip layers are arranged on two opposite ends of the two clamping plates, support assemblies are arranged on two sides of thefixing frame, and the two clamping plates are arranged on the two support assemblies. The high-voltage electric cable detection device has the advantages that workers can manually clamp electric cables with different diameters by the aid of the electric cable clamping assembly and can quickly fix or detach the electric cables by the aid of an adjusting head, and accordingly the high-voltage electric cable detection device is high in practicality; the workers can quickly puncture and detect the electric cables by the aid of the voltage detection assembly, accordingly, the time and labor can besaved as compared with the traditional methods, the high-voltage electric cable detection device can bring convenience for the workers, and the detection efficiency of the workers can be improved.

The invention relates to a single-roller and double-wheel bicycle game device, which comprises a bicycle, a single-roller and double-wheel deceleration device and a ball control device, wherein the single-roller and double-wheel deceleration device comprises a base, two wheels which are symmetrically arranged at two sides of the base and a roller which is rotatably connected to the base; the single-roller and double-wheel deceleration device further comprises a deceleration transmission device and a connecting rod; and the ball control device comprises a stand, a ball holding and shooting device and a control device. According to the device, riding speed of the bicycle can be greatly reduced and a sports field can be diminished, the upper end of the connecting rod keeps rigid connection with the bicycle frame, so that good controllability and high response speed are guaranteed; the deceleration device, which is just provided with one roller, can get coordinated with a rear wheel of thebicycle more easily and can be prevented from getting released from contact with the rear wheel of the bicycle due to change in back-and-forth position; the bicycle is also lower in noise during riding; in addition, a ball can be precisely moved under the control of the ball control device and can be shot at designated places; therefore, the device is interesting and ornamental; and the device integrates entertainment and fitness.

The invention relates to a novel architectural glass enclosing wall. The architectural glass enclosing wall comprises a moving device, a fast fixing device and a rotating device. The moving device ismounted on the inner side face of the fast fixing device, and the rotating device is mounted on the upper end face of the fast fixing device. The architectural glass enclosing wall can solve the problems that time and labor are wasted when existing glass enclosing walls are installed and fixed, the glass enclosing walls cannot be fast spliced and folded, and the air permeability cannot be adjustedunder the condition of ensuring an anti-theft effect; the glass enclosing wall can achieve the functions of fast installation and foldability.

The invention relates to a single-wheel and single-roller bicycle game device, which comprises a bicycle, a single-wheel and single-roller speed reduction device and a ball control device, wherein thesingle-wheel and single-roller speed reduction device comprises a base, a wheel which is rotatably connected to the base, and a roller which is rotatably connected to the base; the single-wheel and single-roller speed reduction device further comprises a speed reduction transmission device and a connecting rod; the ball control device comprises a stand, a ball holding and shooting device and a control device; a connecting port is arranged in the upper end of the stand; and the control device is detachably connected to a bicycle handle. With the application of the device, the bicycle riding speed can be greatly reduced and a sports field can be diminished, and the speed reduction device is rigidly connected to a bicycle frame, so that good controllability and high response speed are guaranteed; the speed reduction device, which is provided with one wheel only, can swing along with the swinging of the bicycle, so that a high simulation degree is achieved; in addition, balls, under the control of the ball control device, can be precisely moved and shot at designated places; the bicycle game device is interesting and ornamental; and the bicycle game device integrates entertainment andfitness.

The invention discloses a temperature test chamber calibration and point distribution device. The temperature test chamber calibration and point distribution device comprises a telescopic rod device (1) and clamp devices (3), wherein a pressing device (2) is arranged at the bottom end of the telescopic rod device (1), the telescopic rod device (1) is in the shape of a telescopic rod, and the clamp devices (3) are separably connected to the telescopic rod device (1). According to the temperature test chamber calibration and point distribution device, the telescopic rod device (1), the pressing device (2) and the separable clamp devices (3) are adopted, the length can be adjusted by vertically sliding the telescopic rod, the whole telescopic rod part is pressed by the pressing device under the action of a spring mechanism, the position of a sensor is accurately positioned in the axial direction by telescopic rod clamps, the temperature sensor is fixed through sensor clamps, damage to the connecting line of the temperature sensor is avoided, the whole temperature test chamber calibration and point distribution device is simple, light, economical and practical, and the purposes that point distribution of the sensor is accurate, efficiency is high, the sensor is not prone to damage, and operation is easy to perform are achieved.

The invention discloses a positioning device for X-ray testing equipment. The positioning device is characterized by comprising a base (3), a supporting platform (6) which is installed on the base (3) and capable of sliding along the base, a lifting device which is arranged on the supporting platform (6) and can rise and fall, and a clamping component arranged on the lifting device. The positioning device is simple in structure and low in cost, installation and fixation of an X-ray machine and an imaging board can be achieved quickly, the relative positions of the X-ray machine and the imaging board can be correspondingly adjusted according to tested equipment conveniently, and the positioning device is suitable for application and popularization.

The invention discloses a clamp for processing holes. The clamp comprises a workbench, wherein a fan-shaped block is connected on the top surface of the workbench; a clamping device is mounted on thetop surface of the fan-shaped block; the clamping device comprises a fixed base which is fixedly arranged on the top surface of the fan-shaped block; a plurality of pressure plates which are distributed in the form of an array are connected on the top surface of the fixed base; a pin roll is arranged on the side surface of the fan-shaped block; a baffle block is connected between the pin roll andthe side surface of the workbench; a base is fixedly arranged on the top surface of the workbench; a bracket is fixedly arranged on the top surface of the base; a first drive motor is mounted on the top of the bracket; the bottom output end of the first drive motor is connected with a lead screw; a nut block sleeves outside the lead screw; and the side surface of the nut block is fixedly equippedwith a cantilever. The two sides of the fan-shaped block are equipped with protectors, and the two ends of an arc-shaped slide slot are equipped with joints, so that the device can be protected. The clamp can realize continuous link between mutual and quick switching-fixing and processing of two stations, greatly improves production efficiency, and is reasonable in structure.

The invention discloses silk-screen printing ink. The silk-screen printing ink is prepared from, by weight, 15-25 parts of pigments, 25-40 parts of a binder, 45-70 parts of solvent, 1-3 parts of calcium carbonate, 1-3 parts of a defoaming agent, 1-3 parts of a leveling agent, 2-7 parts of a 5A molecular sieve, 1-3 parts of fumed silica, 2-7 parts of a dispersing agent, 0.5-1.5 parts of an adhesion promoter, 2-5 parts of gummy oil, 1-3 parts of a slipping agent, 1-4 parts of barium sulfate, 1-3 parts of hydrotalcite and 1-3 parts of a light stabilizer. According to the silk-screen printing ink, adhesion of ink can be enhanced, the ink penetration and ink fusion phenomena of the ink are prevented, the chemical stability is high, the storage time is long, the printing property is stable, the uvioresistant capacity and the antioxidant capacity are high, and wear resistance is achieved.

The invention relates to the field of sewer systems. The invention relates to a pipeline reinforcing and connecting device for a sewer system. The device comprises a connecting pipe, a fixing pipe, aconnecting sealing socket, a fixed supporting sealing base, a fixed sealing socket and an adjusting locking fixer. The connecting sealing socket is fixedly connected to the inner end of the connectingpipe, the connecting sealing socket is inserted and sealed in the fixed support sealing base, the fixed support sealing base is fixedly connected to the outer end of a fixed connection fixing pipe, the fixed supporting sealing base is fixedly connected to the fixed sealing socket, and the adjusting locking fixer is slidably connected into the fixed sealing socket. The device has the beneficial effects that a pipeline of an underground sewer system is rapidly and effectively installed, connected, fixed and sealed; large-scale earth cutting engineering is reduced, and nearby pipelines can be rapidly disassembled and replaced through a sewer channel; the operation is convenient, and the actual use is convenient.

The invention relates to the technical field of petroleum fermentation and particularly relates to a detection sampling device for petroleum fermentation treatment. Technical problems that in the prior art, sampling is not comprehensive, and fermentation fails due to uncovering sampling are solved. The detection sampling device for petroleum fermentation treatment comprises a first rotating disc, a telescopic mechanism, a sealing mechanism, a sampling mechanism, a turnover mechanism, a fixing mechanism and a collecting mechanism, wherein the telescopic mechanism is arranged in the middle of the first rotating disc, the sealing mechanism is arranged on the right portion of the telescopic mechanism, the sampling mechanism is located below the sealing mechanism, and the turnover mechanism is arranged below the sampling mechanism; the fixing mechanism is arranged below the turnover mechanism, and the collecting mechanism is arranged below the fixing mechanism. The detection sampling device is advantaged in that omnibearing sampling of petroleum fermentation liquor in a fermentation tank is achieved through the first rotating disc and the telescopic mechanism, isolation of air inside and outside the tank body during sampling is achieved through the sealing mechanism, an upper surface of a conical cover entering the tank body does not make contact with outside air, and the collecting mechanism is simply and conveniently fixed, assembled and disassembled through the overturning mechanism and the fixing mechanism.