336results about How to "Reduce coefficient of friction" patented technology

The invention relates to the technical field of through-flow turbines, and particularly discloses a through-flow turbine control ring auxiliary sliding bearing and a through-flow turbine. An auxiliary sliding bearing for a control ring of a tubular turbine comprises an anti-wear block and an anti-wear part arranged on the same side as the anti-wear block. The anti-wear block is in sliding fit with the anti-wear part; the anti-wear block and the anti-wear piece are respectively arranged on the control ring and the guide vane outer ring; according to the invention, the connection between the control ring and the guide vane outer ring can be more reliable, and the deflection of the control ring caused by the abrasion of the steel balls on the control ring and the guide vane outer ring groove can be effectively avoided.

A refrigerating machine oil containing alkylbenzene and a hydrocarbon oil other than alkylbenzene having a refractive index of 1.445 or less at 20 DEG C.

The application provides a focusing motor and a camera module. The focusing motor comprises a fixed part, a moving part, a focusing assembly, a magnetic attraction sensing part, a guide part and a position sensor. The fixed part comprises a first support arm and a second support arm connected with each other, and a light passage hole formed between the first support arm and the second support arm. The moving part is arranged in the light passage hole and can move in a preset direction. The magnetic attraction sensing part is arranged in the moving part. The angle between the magnetization direction of the magnetic attraction sensing part and the first direction and the second direction perpendicular to the preset direction is an acute angle. The guide part is arranged on the first support arm and corresponds to the magnetic attraction sensing part. The position sensor is arranged on the second support arm and corresponds to the magnetic attraction sensing part. The position sensor can generate an induction force with the magnetic attraction sensing part, so that the position sensor can sense the moving position of the moving part. The focusing motor can significantly reduce the size of the focusing motor, and can guarantee the guiding stability and the position detection precision required by the automatic focusing function while realizing the miniaturization of the camera module.

The utility model relates to the technical field of inner swing door drive structure, and concretely is a kind of double inner swing door double-motor drive structure of passenger car, including door frame and two groups of motor drive structure, and the inner swing door installed in the door frame door hole, two groups of motor drive structure are set in the main shaft top of inner swing door, the outer periphery of motor drive structure is covered with protective box, two groups of motor drive structure all include the motor with brake of output shaft, and the drive self-lubricating mechanism for gear lubrication, the driving shaft bottom of motor is equipped with driving gear, the outer periphery of the main shaft top of inner swing door is equipped with driven gear by key pin, driven gear is engaged with driving gear, the drive self-lubricating mechanism is located above driven gear, and the main shaft top is connected with support flange.

The utility model belongs to the technical field of glasses supports, and discloses a limiting structure of a glasses support, which comprises a glasses frame connecting piece and glasses legs, and is characterized in that the glasses legs and the glasses frame connecting piece are connected through a hinging piece, the hinging piece comprises a clamping piece and a rotating shaft, the glasses frame connecting piece and the glasses legs are both connected with the rotating shaft, and the clamping piece is clamped on the rotating shaft; wherein gaskets are arranged between the glasses legs and the rotating shaft, and the gaskets are configured to be used for reducing friction; through the arrangement of the gaskets, the joints are smoother in the moving process, the friction coefficient between the glasses legs and the rotating shafts can be remarkably reduced, the clamping stagnation phenomenon at the joints of the glasses frame and the glasses legs is reduced, and meanwhile abrasion caused by repeated unfolding and folding is reduced. Therefore, the service lives of the spectacle frame connecting piece and the spectacle legs are prolonged, and the material damage caused by friction is reduced.

The utility model belongs to the automobile safety technical field provides a kind of anti-static grounding structure, including elastic conducting part, the quantity of elastic conducting part is multiple and is spiral, the bottom of elastic conducting part is equipped with ground plate, the top of elastic conducting part is equipped with the mounting base plate of fixed connection, the top of mounting base plate is symmetrically equipped with clamping plate, and the cooperation chamber is formed between two clamping plates, and limiting slot is equipped on the opposite surface of two clamping plates;It also includes quick-mounting pedestal installed on vehicle body, the bottom of quick-mounting pedestal is symmetrically equipped with metal plug, the metal plug and the limiting slot are mutually matched, and quick positioning assembly is equipped between quick-mounting pedestal and vehicle body;The utility model can effectively reduce abrasion by the self-adapting conductive structure, ensure that vehicle is continuously efficient in various road conditions Release static electricity.

The utility model discloses a sheet metal part drilling fine adjustment mechanism relates to sheet metal part drilling field, the utility model discloses a first electric sliding table, and the output of first electric sliding table is equipped with the first sliding seat, and the top of first sliding seat is installed with second electric sliding table, and the output of second electric sliding table is equipped with the second sliding seat. The utility model discloses through being provided with the shielding cloth, first bolt, second bolt, first side plate and second side plate, the top of first electric sliding table and second electric sliding table can be shielded by the shielding cloth, prevent the direct drop of debris to the top of first electric sliding table and second electric sliding table, thereby prevent the hard debris (such as metal scrap) and cause the sliding seat to be stuck in the clearance between electric sliding table and sliding seat and affect the movement of sliding seat, to ensure that the sliding seat can move smoothly, prevent the sliding seat to push the debris movement simultaneously and make the debris and the top of electric sliding table rub and scratch the top surface of electric sliding table, thereby prolong the service life of electric sliding table.

The invention discloses a cold rolling process of an aluminum-based silicon carbide coil material. The cold rolling process comprises the following steps: carrying out surface treatment and coiling on a hot-rolled coil material; after the protective film is removed online, cold rolling-annealing I circulation is conducted, the single-pass rolling reduction of cold rolling is 5%-10%, the unit tension is 10%-30% of the yield strength of the material, the speed is smaller than or equal to 15 m / min, heat preservation is conducted for 1-2 h at the temperature of 430-480 DEG C in annealing I, and the heating and cooling rate is smaller than or equal to 10 DEG C / min; then edge cutting is carried out to remove edge cracks; the heating and cooling rate of the annealing II is smaller than or equal to 8 DEG C / min, and the heat preservation time is shorter than that of the annealing I; performing surface treatment after annealing II; and finally, finished product cold rolling is conducted, the single-pass rolling reduction is 5%-8%, and the speed is 5-10 m / min. By means of optimized multi-pass small rolling reduction rolling, staged temperature control annealing and tension control, the technical problem that the aluminum-based silicon carbide composite material is prone to cracking and strip breakage in the continuous cold rolling process is solved.

The application discloses a non-magnetic ring proportional pressure reducing electromagnetic valve for a hydraulic system, a first through hole, a second through hole and a first blind hole are formed in the valve body, a pressure relief hole and a pressure inlet hole are formed in the side wall of the valve body, the pressure relief hole and the pressure inlet hole are communicated with the first through hole, a working hole is radially formed in the side wall of the valve body, the inner end of the working hole is communicated with the first through hole, and the outer end extends to the outer surface of the valve body, a valve core is axially movably installed in the first through hole, and a fifth outer groove and a first annular protrusion are arranged on the outer periphery of the valve core, the first annular protrusion forms an annular gap with the inner wall of the first through hole, a coil assembly is arranged in the yoke, a stop iron is fixedly arranged in the yoke through a mounting plate, and a magnetic circuit optimization structure is arranged on the outer surface of the stop iron. The magnetic circuit optimization and the multiple anti-sticking and friction-reducing designs are integrated, the independent magnetic ring is cancelled, the structure is simplified, the electromagnetic force, the response speed and the service life of the electromagnetic valve are comprehensively improved, the processing difficulty is obviously reduced, and the application range of the electromagnetic valve is widened.

The utility model relates to a wheelchair technical field provides a low resistance track assembly, including track frame, the track frame includes two opposite setting frame board, the both ends of track frame are equipped with driving pulley and driven pulley respectively, and the both sides around the track of interconnection, driving pulley rotation sleeve connection is in driving axle, and driven pulley rotation sleeve connection is in driven axle, rotation is provided with a plurality of along track transmission direction arrangement's bearing wheel between two frame boards, the rolling of bearing wheel abuts on the inner surface of track located below it, and the diameter of bearing wheel is no more than 15mm. By this, the utility model discloses through setting up close arrangement's bearing wheel, and the load of track bearing is changed into rolling friction from sliding friction, and the drive resistance of track is greatly reduced. Bearing wheel diameter is small, and densely arranged, and the gap is small. When track is pressed on the object such as step, the deformation of track cannot enter the gap, avoids being stuck between two bearing wheels. The utility model provides a kind of climb wheel.

The application relates to the technical field of high polymer materials, in particular to an impact-resistant polyether ether ketone-based engineering plastic and a preparation method thereof; the polyether ether ketone-based engineering plastic is prepared from the following raw materials in parts by weight: 90-140 parts of PEEK resin, 12-20 parts of carbon fibers, 8-15 parts of basalt fibers, 3-5 parts of a silane coupling agent, 6-10 parts of a compatilizer, 5-8 parts of a composite antibacterial agent, 1.5-2.5 parts of an antioxidant, 2-3 parts of a lubricant and 1.5-2 parts of N-phenyl maleimide; the polyether ether ketone-based engineering plastic prepared by the application not only has excellent antibacterial performance and impact resistance, but also has good anti-aging performance and wear resistance, thereby prolonging the service life of the polyether ether ketone-based engineering plastic to a certain extent and ensuring the quality of the polyether ether ketone-based engineering plastic.

The invention is suitable for the technical field of materials, and discloses silica gel and a preparation method thereof, and a silica gel product and a preparation method thereof. Wherein the silica gel comprises a first component and a second component, the first component comprises a base material, a reinforcing agent, a modified filler, titanium dioxide and a vulcanizing agent, and the second component comprises a base material, a reinforcing agent, a modified filler, titanium dioxide, a cross-linking agent and a polymerization inhibitor. The silica gel provided by the invention not only has better mechanical properties, but also has a small friction coefficient, when the silica gel is in contact with skin, the adhesion feeling is low, the smooth effect is good, and the smooth feeling and the skin-friendly property are improved. Moreover, two components, namely the first component and the second component, are arranged, the first component and the second component are stored separately, the material is easy to store and stable in performance, the service life of the product can be prolonged, in addition, the material preparation and forming process is simple, the vulcanization time is short, and the production efficiency is greatly improved.

This invention provides a high-hygroscopic, water-free composite gel-type calcium and magnesium salt tablet and its preparation method, which is made from the following raw materials in parts by weight: 45-70 parts calcium and magnesium salt, 15-25 parts gum arabic, 3-15 parts mica powder, 2-12 parts polyethylene oxide, 0.5-2 parts sodium nitrite, and 2-30 parts gelatin. This tablet exhibits high hygroscopicity and excellent physical properties.

This utility model relates to the field of steering gear lubrication technology, specifically a high-efficiency and energy-saving steering gear transmission device for ships. It includes a steering gear body, a transmission gear set inside the steering gear body, multiple temperature detection units for detecting the internal temperature of the steering gear body, a liquid cooling unit body installed on the outside of the steering gear body, and heat dissipation pipes arranged inside the steering gear body. Coolant absorbs heat from the internal side of the steering gear body through these pipes. This utility model uses liquid cooling, preventing moisture and dust from entering the steering gear body, thus avoiding the shortened service life of the transmission gear set due to moisture and dust. The lubricating oil is heated and stirred before addition to ensure optimal lubrication. A lubrication pump delivers the lubricating oil between the gears, reducing the friction coefficient and heat generation, thus solving the high-temperature problem at its source and protecting the gears, extending their service life.

This utility model discloses a self-lubricating bearing ring for new energy vehicle transmission, including an outer bearing ring. A circulation pipe is snapped into a groove in the outer bearing ring, and the circulation pipe is tightly attached to a first groove, which is formed on a snap-fit ​​block. This utility model utilizes the fact that solid lubricant is typically embedded in the inner bearing ring material. During bearing operation, due to friction and temperature changes, the lubricant in the ring is gradually released to the friction surface. The lubricating film effectively reduces direct metal-to-metal contact, thereby reducing the coefficient of friction and wear rate. The lubricating film can also absorb some heat, helping to control the bearing temperature rise. The three-layer protection of the first, second, and third dustproof rings effectively prevents dust from entering, thus improving the bearing's lubrication efficiency and service life. The circulation pipe contains a heat-absorbing solution, which can significantly improve the heat dissipation capacity of the outer bearing ring, slowing down bearing material fatigue and performance degradation.

The utility model discloses a quick disassembly and assembly type gas compressor connecting rod connecting mechanism, including device body, the device body contains connecting rod, connecting rod front end connection piston ring and connecting rod rear end connection connecting rod upper shoe, be equipped with piston pin in the piston ring, one end of connecting rod upper shoe is equipped with connecting rod lower shoe, be equipped with inserting hole no.

The invention discloses an anti-static and anti-abnormal-sound coating for a durable automobile sealing strip and a preparation method of the anti-static and anti-abnormal-sound coating in the field of functional coating materials. The coating is prepared from hydroxy acrylic resin, two special functional fillers, auxiliaries and a solvent. Wherein the vinyl functionalized polypyrrole-silver nanowire hybrid conductive fiber provides a lasting static dissipation path, and the epoxy siloxane grafted perfluoropolyether solid lubricating particles provide long-acting lubrication through chemical bonding so as to eliminate abnormal sound. When the coating is prepared, the resin and the adhesion promoter are dissolved in the mixed solvent to form a resin liquid, then the two functional fillers and the lubricating additive are added after being pre-dispersed, and finally the mixture and the cross-linking agent are mixed and cured. The coating is firmly attached to the surface of the sealing strip through chemical bonding and endows the sealing strip with stable and lasting anti-static, noise-reducing and wear-resisting performance, and the process is simple and convenient and suitable for large-scale production.

This invention provides a hydrophobic solvent and coating, comprising the following components by weight: perfluoronaphthalene: 93-94.5 wt%; methyl undecanoate: 5-5.3 wt%; perfluoropolyether trimethoxysilane: 0.2-0.8 wt%. This invention constructs a low surface energy layer on the substrate surface using perfluoropolyether trimethoxysilane, weakening the adhesion between water and the coating. During windshield wipes, no white fog is visible, solving the problem of residual white fog after wiping with traditional coatings. Simultaneously, the film-forming substance forms chemical bonds with the hydroxyl groups of the substrate, resulting in high adhesion and coating hardness, stable basic hydrophobicity and mechanical properties, meeting the needs of conventional applications.

The application discloses a liquid metal bearing for an X-ray tube and the X-ray tube, relates to the technical field of X-ray tubes, and solves the technical problems of short service life and poor heat dissipation effect of the bearing. The liquid metal supporting bearing comprises a bearing sleeve, a mandrel, liquid metal and a microporous structure; the bearing sleeve is sleeved outside the mandrel, and a gap is arranged between the bearing sleeve and the mandrel; the liquid metal is filled in the gap; the microporous structure is arranged on the inner surfaces opposite to each other of the bearing sleeve and the mandrel and / or the outer surfaces opposite to each other of the mandrel and the bearing sleeve, the microporous structure is formed by a plurality of micropores arranged in an array, and the microporous structure has a protruding direction consistent with the flowing direction of the liquid metal. The liquid metal distribution is optimized through the micropores and optional microslit structures between the bearing sleeve and the mandrel, the friction coefficient is reduced, the heat dissipation performance is enhanced, and the service life and the heat dissipation effect of the bearing can be remarkably improved.

This invention discloses a sulfide-reinforced alloy powder for plasma spraying and its preparation method. The method includes: dispersing alloy matrix powder in a water / alcohol mixed solvent for surface activation to obtain activated alloy powder; adding the activated alloy powder to a sulfur-containing coordination reaction solution containing a sulfur-containing coordination precursor, a transition metal salt, and layered sulfide nanosheets for liquid-phase coordination deposition to form a discontinuous deposition layer with a metal-sulfur coordination structure; then performing low-temperature sulfidation heat treatment under a nitrogen atmosphere to transform the discontinuous deposition layer into a transition metal sulfide interface layer, anchoring the layered sulfide nanosheets therein; finally, drying, dispersing, shaping, and sieving to obtain the target alloy powder. The alloy powder obtained by this invention can improve the sulfide retention rate and lubricating phase distribution uniformity after spraying, and improve the coating bonding strength and friction-reducing and wear-resistant properties.

The utility model relates to mechanical engineering technical field discloses a kind of transmission screw of double thread structure, including stud, the outside of stud is fixedly connected with two inner rings, the outside of inner ring is fixedly connected with thread tooth, the surface of inner ring is equipped with lubricating groove, the outside of thread tooth is movably connected with multiple ball bearings, multiple ball bearings are evenly distributed in the outer surface of thread tooth in equidistant interval mode, and extend along the helical path of thread tooth, ball bearing is steel ball bearing, and surface is polished, the radial dimension of inner ring is less than thread tooth, and the corresponding ladder groove of adaptation bolt is equipped with, axial limit is formed when the two are clamped, and the inner wall of lubricating groove is equipped with flow guide line route.In the utility model, rely on the bidirectional ladder type clamping structure of double inner ring and bolt double internal thread, can form double axial limit effect, greatly enhance the connection firmness of screw and bolt, effectively avoid the front and rear sway or deviation caused by vibration, impact during transmission.

The invention provides a rotor surface treatment process, and relates to the technical field of surface treatment.The rotor surface treatment process is characterized in that a coating sequentially comprises a soft layer A, a hard layer B and a toughening layer C from a base body to the outside; the soft layer A is a metal lubricating composite layer formed by metal Mo or W and C or S with increasing content; the hard layer B is formed by metal nitride or carbonitride; a continuous component and structure gradient region is arranged between the soft layer A and the hard layer B; and the toughening layer C is a nanocrystalline-amorphous mixed structure formed by solid micro-diffusion of the hard layer B at 320-420 DEG C. Periodic micro-pits are formed in the surface of the toughening layer C and can be used for storing a lubricating medium. Through component gradient design and process hardening and tempering, the binding force, the wear resistance, the impact resistance and the stripping resistance of the coating are remarkably improved, the service life of the coating is prolonged, and the service life of the coating is prolonged. The method is suitable for high-load and high-friction working conditions such as vacuum pump rotors.

This invention belongs to the field of test probe fabrication technology, specifically a method for preparing a special coating for spring probes. The method includes: depositing a Si gradient transition layer on the surface of a spring substrate, followed by oxygen plasma activation treatment to form a specific active pinning layer of 3 to 5 nanometers; then depositing a DLC coating using a specific process, employing a specific peak voltage and a specific duty cycle pulse bias mode to pre-position dispersed carbon clusters. The SixOy pinning layer provides dual anchoring of chemical bonding and mechanical interlocking for the DLC coating during cyclic stress-induced graphitization transformation, preventing microcracks from propagating to the interface and ensuring the safe operation of the adaptive lubrication process. This invention overcomes the technical bottleneck of fatigue spalling of DLC coatings on elastic components, significantly improving the service life of spring probes.

The application discloses a kind of invisible optical cable and preparation method thereof, belong to optical cable technical field, including multiple optical fibers, and sleeve is arranged at the periphery of multiple optical fibers, and sleeve is prepared using transparent material.The woven yarn is further provided in the sleeve in the application, and the woven yarn is in mesh structure, and multiple optical fibers are sequentially and side by side arranged in the mesh structure of woven yarn.In the application, the arrangement order of each optical fiber is naturally limited by the mesh structure of woven yarn, and each optical fiber can be accurately distinguished by observing the position of optical fiber in the mesh during construction, without any color marking or special identification equipment, especially suitable for multi-core invisible optical cable.The yarn of woven yarn is extremely thin, and the mesh structure is invisible under normal visibility, the overall transparency of optical cable is high, and it is perfectly integrated with indoor environment, maintaining excellent invisible effect.

The utility model discloses a simple piston ring with oil storage grooves, which comprises a ring-shaped main body structure and is characterized in that a plurality of oil storage grooves are processed and formed on an excircle working surface of the ring-shaped main body structure by adopting a milling or grinding process, the plurality of oil storage grooves are annular and are uniformly distributed along the axial direction, the groove width of each oil storage groove is 0.5 mm, and the groove width of each oil storage groove is 0.5 mm. The depth of the oil storage grooves is 0.2 mm, and the sum of the widths of the oil storage grooves accounts for 1 / 3-1 / 2 of the height of the annular body structure. The lubricating device is simple in structure and good in lubricating effect.

The invention belongs to the field of lubricating oil, and particularly relates to a multi-gear gearbox lubricating oil composition as well as a preparation method and application thereof. The multi-gear gearbox lubricating oil composition is prepared from the following raw materials in percentage by mass: 2.0 percent to 4.5 percent of a viscosity index improver, 0.01 percent to 0.08 percent of a clearing agent, 4.5 percent to 7.0 percent of a dispersing agent, 0.3 percent to 1.0 percent of an anti-wear reagent at extreme pressure, 0.05 percent to 0.3 percent of an anti-rust agent, 0.3 percent to 1.5 percent of an antioxidant, 0.01 percent to 0.2 percent of a metal deactivator, 0.3 percent to 1.5 percent of a cross-linking agent, 0.01 percent to 0.03 percent of an anti-foaming agent and the balance of base oil. The cross-linking agent of the composition adopts trimethylolpropane tri (1H-imidazole-1-acetate), so that the wear resistance of an oil product is effectively enhanced, the friction coefficient is reduced, and the friction durability is improved, thereby achieving the effects of prolonging the endurance mileage and prolonging the service life of hardware.

The application discloses a rolling-drawing combined forming method for a titanium alloy small-diameter thick-wall pipe in the technical field of metal pipe processing, and aims at the technical problems of poor size uniformity of the titanium alloy small-diameter thick-wall pipe, defects such as easy folding and scratching of an inner wall, and low flaw detection qualified rate in the prior art, and provides a rolling-drawing-rolling combined forming system integration method, realizes synchronous optimization of pipe size precision, surface quality and internal organization through a complete process chain of vertical extrusion blanking, surface treatment and finishing forming, annealing straightening and machining finishing, composite coating protection and multi-pass drawing, precision finishing and multi-pass rolling annealing and finished product flaw detection treatment. The method adopts a composite lubrication system combining copper plating and MoS2 solid coating, cooperates with coupling regulation and control of deformation and Q value and a differential interpass annealing system, effectively inhibits the generation and inheritance of inner wall defects in the forming process, and significantly improves production efficiency and product quality stability.

The utility model discloses a sliding structure capable of running smoothly, which belongs to the technical field of automobile accessories and comprises a sliding groove, a sliding channel arranged along the length direction of the sliding groove is arranged in the sliding groove, a sliding seat and a screw rod for driving the sliding seat to translate along the sliding channel are arranged in the sliding channel, the top surface of the sliding seat is connected with a cantilever, and the cantilever is connected with the sliding groove. A guide rail is arranged on the inner wall of the sliding groove, a groove is formed in the sliding base, and the guide rail extends into the groove. According to the sliding structure which runs smoothly, the original large cylindrical sliding contact surface is changed into a small-area contact form that the sliding chute is matched with the sliding seat, so that the friction coefficient is greatly reduced.

The invention discloses a self-lubricating PEEK-based composite material and a preparation method thereof, and belongs to the technical field of PEEK composite materials. The self-lubricating PEEK-based composite material is prepared from the following raw materials in parts by mass: 100 parts of polyether-ether-ketone resin, 10 to 15 parts of polyarylene sulfide ketone, 5 to 10 parts of polyarylene sulfide amide, 15 to 25 parts of epoxy group modified MoS2atCO-SiO2 nano material, 4 to 12 parts of modified carbon fiber and 1 to 2 parts of antioxidant. Wherein the modified carbon fiber is obtained by carrying out acylation reaction on carboxylated carbon fiber and then carrying out grafting reaction on the carboxylated carbon fiber and 2-aminodiphenyl sulfide. According to the invention, polyether-ether-ketone, polyarylene sulfide ketone and polyarylene sulfide amide are blended to form a polymer matrix of the PEEK-based composite material, and the epoxy group modified MoS2atCO-SiO2 nano material and the modified carbon fiber are used as lubricating components, so that the composite material has an excellent self-lubricating effect under the combined action.

This invention relates to the field of railway vehicle safety protection equipment technology, and discloses a double-sided synchronous clamping reinforcement for the lower door frame of an open wagon. The reinforcement includes a wagon body with a door hinged to it. A door lock is fixedly installed on the front side of the wagon body, fitting against the front side of the door. A fixing mechanism extending to the front side of the wagon body and fitting against the wagon body is provided on the rear side of the wagon body. An adjustment mechanism extending to the left and right sides is provided inside the fixing mechanism, extending to the top of the fixing mechanism. A limiting mechanism extending to the inside of the fixing mechanism and connected to the fixing mechanism is provided on the front side of the fixing mechanism. A clamping mechanism fitting against the front side of the door lock is provided at the top of the adjustment mechanism. This double-sided synchronous clamping reinforcement for the lower door frame of an open wagon, by setting the fixing mechanism, adjustment mechanism, and limiting mechanism, achieves the purpose of adjusting the distance between the two sides according to needs. By setting the clamping mechanism, the clamping end is easily replaceable.