345 results about "Kinetic friction" patented technology

The invention relates to the field of low-temperature liquid conveying equipment, and discloses a rotor supporting system of a low-temperature liquid pump, which is arranged on a pump rotating shaft and is used for supporting a rotor. The system includes a fixed bearing bushing, a swivel bearing bushing, and a flexible coupling bushing ring. The fixed bearing bushing is fixedly mounted in a bearing supporting seat of the pump body; the rotating bearing bush is arranged on the pump rotating shaft in a sleeving mode, and a sliding friction pair is formed between the rotating bearing bush and the fixed bearing bush. And the flexible connecting bushing ring is arranged between the rotary bearing bushing and the pump rotating shaft and is in interference fit with the rotary bearing bushing and the pump rotating shaft respectively. Through the flexible connection bushing ring, the thermal deformation difference of materials in a low-temperature environment can be absorbed, starting impact and operation friction damage are reduced, and therefore stable supporting and long-term reliable operation of the low-temperature liquid pump rotor are achieved.

The invention relates to the technical field of robot welding guns, in particular to a robot welding gun neck capable of reducing wire feeding resistance. The robot welding gun neck comprises an outer pipe and an inner pipe, the inner pipe is a special-shaped pipe, a wire feeding channel extending in the axial direction of the inner pipe is arranged on the upper portion of the inner pipe, and a notch is formed in the bottom side of the wire feeding channel; a set of idler wheels are arranged in the wire feeding channel, and welding wires can penetrate through cavities between the idler wheels and the notches. The structural form of the inner pipe and the outer pipe is adopted, the special grooves are designed in the inner pipe to serve as wire feeding channels, the roller sets are placed in the grooves, sliding friction with large resistance in the wire feeding process is changed into rolling friction with low resistance through the roller sets, and therefore the wire feeding stability is improved.

The present application relates to the field of plate processing device, specifically to a flexible finishing mechanism, by setting the first and second side of the mold body as a smooth surface, used to guide the smooth entry of the plate, avoiding the sharp collision of the traditional disc mold, solving the problem of easy to produce wave under high speed. By setting the first and second torsional spring, used to provide continuous elastic buffer force, compared with linear spring, torsional spring is not easy to fatigue relaxation under long-term alternating load and easy to adjust the preload, solving the problem of unstable processing effect caused by the performance decline of traditional spring. By setting the first bearing, used to change the sliding friction between the first mold body and the plate into rolling friction, by setting the second bearing, used to change the sliding friction between the second mold body and the plate into rolling friction. At least solve one or more of the deficiencies of the existing finishing mechanism in high speed adaptability, adjustment convenience and long-term stability.

The utility model discloses an electric tool. The electric tool comprises a gearbox, a cutting mechanism, a transmission mechanism, a rolling piece and a driving mechanism. The cutting mechanism comprises a blade; the transmission mechanism is movably mounted in the gear box and comprises a connecting piece connected with the blade; the rolling piece is movably propped between the inner wall of the gearbox and the connecting piece, and the peripheral surface of the rolling piece is in line contact or point contact with the connecting piece; the driving mechanism is connected with the transmission mechanism so as to drive the connecting piece to drive the blade to move. According to the electric tool, the rolling piece movably abuts against the position between the inner wall of the gear box and the connecting piece, a friction plate fixed to the inner wall of the gear box in the prior art is replaced, namely sliding friction in the prior art is replaced with rolling friction, surface contact at the contact position is changed into line contact or point contact, friction force is reduced, and the service life of the electric tool is prolonged. Heat generation is reduced, the service life of the rolling piece is prolonged, and the use cost of the electric tool is reduced.

The invention relates to the technical field of strip steel plate machining, in particular to a limiting device capable of reducing edge abrasion, which comprises a fixed seat, a sliding seat arranged on one side of the fixed seat, detachable bearing seats symmetrically arranged on the outer walls of the upper end and the lower end of the sliding seat, and a vertical guide roller rotationally connected between the two groups of bearing seats. According to the limiting device capable of reducing edge abrasion, in the using process of the limiting device capable of reducing edge abrasion, when the limiting device capable of reducing edge abrasion is used, the edge of a steel plate is in rolling contact with a vertical guide roller, and therefore the edge of the steel plate is prevented from being abraded; the rotation of the vertical guide rollers converts traditional sliding friction into rolling friction, the abrasion degree of the edge of the steel plate and the limiting device is greatly reduced, through the rolling contact design of the vertical guide rollers, the sliding friction of the edge of the steel plate and the limiting device is converted into rolling friction, and the abrasion rate of the edge of the steel plate and the limiting device is remarkably reduced. And meanwhile, the edge loss of the to-be-centered steel plate is reduced.

This utility model discloses a displacement-amplified composite friction damper. The upper connecting plate has three sets of equidistant axial connecting ends at its bottom; three sets of equidistant extension plates are located above the core plate, and friction shear components are installed on both sides of the core plate; a lever plate is installed between the axial connecting ends and the extension plates; connecting shafts pass through the axial connecting ends and the extension plates respectively to reinforce the installation of the lever plate; large side plates are fixed at both ends of the lower connecting plate, and the large side plates are tightly fitted to the core plate through the friction shear components. After being amplified by the lever plate, the relative displacement between the upper and lower connecting plates will be greater than the displacement generated by the original building structure. In the small displacement stage: the vulcanized rubber layer absorbs energy through elastic deformation, and the friction plates and steel plates remain relatively stationary, achieving low-frequency vibration isolation. In the large displacement stage: when the vulcanized rubber layer reaches its deformation limit, the steel plate and friction plates begin to slide and rub, significantly improving energy consumption efficiency and adapting to extreme conditions such as earthquakes. The overall structure is simple and easy to install.

The utility model provides a round-bar-shaped material conveying device with a material rolling function, which comprises a conveying mechanism, a plurality of round-bar-shaped material placing grooves are sequentially arranged on the conveying mechanism along the conveying direction of the conveying mechanism, and the width of the round-bar-shaped material placing grooves in the material conveying direction is larger than the diameter of round-bar-shaped materials. A material rolling plate is further fixedly arranged on the conveying path of the round-rod-shaped materials. The upper surface of the rolling plate is provided with at least one upslope section inclining upwards in the material conveying direction, the horizontal height of the lower end of the upslope section is larger than or equal to the horizontal height of the groove bottom of the round-bar-shaped material containing groove and smaller than the horizontal height of the upper end of the upslope section, and the upper end of the upslope section is lower than the upper edge of the groove wall of the round-bar-shaped material containing groove. The upslope section is provided with a section of slope surface which is higher than the groove bottom of the round-rod-shaped material containing groove and forms rolling friction with materials, and the length of the section of slope surface is larger than or equal to the perimeter of the round-rod-shaped materials. According to the utility model, the material can roll in the conveying process, so that the peripheral surface of the round bar-shaped material can be comprehensively observed and detected.

The utility model provides a kind of pulley for heat exchanger internal support plate, belong to heat exchanger support plate technical field.Solve the prior art, the edge of support plate and the inner wall of shell are directly contacted and produce sliding friction, which leads to low operating efficiency and causes scratches on the inner wall of shell, even permanent damage.The utility model discloses a plurality of slides, the plurality of slides are circumferentially arranged at the edge of support plate, the inner side of slide is connected with the edge of support plate, the outer side of slide is rotatably connected with roller, and the roller is rolling fit between the inner wall of heat exchanger shell.It is mainly used for the assembly of support plate during the manufacture and repair of heat exchanger.

This utility model relates to the field of pipe processing technology and discloses an inlaid roller mold for preventing damage to the surface of pipe fittings during bending. The mold includes a base, a mounting plate fixedly mounted on the top of the base, an L-shaped plate fixedly mounted on the top of the mounting plate, a cylinder fixedly mounted on the top of the base, two bending rollers symmetrically arranged on the front side of the L-shaped plate, an adjustment component on the rear side of the L-shaped plate, and a lifting component at the output end of the cylinder. This utility model avoids sliding friction between the mold and the pipe fitting by using rollers to contact the pipe fitting surface, thus preventing surface damage. Furthermore, the rollers act as guides during bending, ensuring the pipe fitting moves along a preset bending path. The rollers also distribute the concentrated pressure during bending to multiple contact points, preventing localized deformation or damage to the pipe fitting. The distance between the two bending rollers can be adjusted to accommodate different bending sizes.

The present invention relates to the field of alloy steel materials, and in particular to a method for manufacturing a high-strength wear-resistant bearing. By incorporating a controllable medium composite structure treatment step into a process, and using metal material modification technology in a controllable medium environment, a composite structure is formed in a product matrix; the composite structure, by means of a gradient distribution, enables the product to achieve high core strength and impact resistance and high surface hardness and wear resistance, so that a service life of 500 hours under low-speed heavy-load service conditions and a friction coefficient of 0.05 or below throughout the entire life cycle are achieved; the service life of 500 hours under the service conditions greatly reduces bushing replacement frequency and device production downtime losses, and the friction coefficient of 0.05 or below throughout the entire life cycle greatly reduces the wear on a friction pair mating with a shaft hole, mitigating sliding friction, achieving the objective of prolonging the service life of both a bushing and a shaft mating with the bushing.

An item of protective apparel comprising: first and second components (41, 42) that are configured to move relative to one another; and a sliding interface provided between the first and second components; wherein the sliding interface comprises first and second surfaces (41, 42) that oppose one another and are configured to slide relative to each other; the first surface has at least a first region (45) which is divided into at least first and second areas (47, 48) that are configured such that at least one of the static coefficient of friction and the dynamic coefficient of friction for the first area against the second surface is different from the second area against the second surface; the first surface has a second region configured such that the static and / or dynamic coefficient of friction of the first surface against the second surface is different in the first region from the second region (46); the second region is divided into at least first and second areas (49, 50) that are configured such that at least one of the static coefficient of friction and the dynamic coefficient of friction for the first area against the second surface is different from the second area against the second surface; and the arrangement of the first and second areas in the first region is different from the arrangement of the first and second areas in the second region.

This utility model relates to a guiding mechanism, belonging to the field of tunnel boring and tunnel construction equipment. The mechanism includes a guide rail and a guide seat. The guide seat is equipped with upper and lower rows of rollers, which are respectively positioned on the upper and lower sides of the guide rail to clamp it. Rolling friction is formed between each roller and the corresponding top / bottom surface of the guide rail. Side sliders are provided on the left and right inner sides of the guide seat. Each side slider is pressed by a corresponding side-clamping device mounted on the guide seat, ensuring that each side slider contacts the left and right sides of the guide rail. Through pure rolling contact between the top / bottom surfaces of the guide rail and the rollers, sliding friction at the reference surface is reduced / eliminated. The rigid positioning of the rollers combined with the lateral constraint of the nylon sliders effectively suppresses swaying and ensures the stability of the drill barrel axis. This solves the problems of durability, stability, and drill jamming caused by wear of the metal reference surface in existing technologies.

The application provides a high-speed wire and rod uniform temperature section guide groove, groove body units are connected at the head and tail to form a guide groove assembly, groove covers are arranged at the groove openings of the groove body units, and the groove bottom parts of the head and tail connecting parts of the upstream and downstream groove body units are provided with guide rollers. The guide rollers are arranged at the groove bottom parts of the head and tail connecting parts of the upstream and downstream groove body units, thereby forming the guide rollers arranged at intervals, and the abrasion caused by the sliding friction of the uniform temperature section is greatly reduced, the service life of the high-speed wire and rod uniform temperature section guide groove is prolonged, and the maintenance cost is reduced.

The utility model relates to the technical field of centrifugal pump shunting, and discloses a centrifugal pump shunting mechanism which comprises a supporting seat, a pump main body and a shunting cylinder, the upper end of the pump main body is fixedly provided with the shunting cylinder, an annular support is fixedly arranged in the shunting cylinder, an annular strip is movably arranged in the annular support, and the upper end of the annular strip is fixedly provided with an annular groove. A rotating rod is fixedly arranged at the top of the sealing ball body, an inner groove is formed in the poke rod, a pull rod is movably arranged on the inner groove, and a spring is connected to the pull rod in a sleeved mode. When the rotating rod drives the sealing ball body to rotate to adjust flow dividing, meanwhile, the annular strip conducts rotating friction along the inner wall of the annular support, and graphite blocks can evenly seep out; a layer of thin lubricating film is formed on the contact face of the annular strip and the annular support, the position of the sealing ball can be fixed only by pulling the pull rod upwards, compressing the spring and loosening the pull rod so as to push the plug pin column to be connected with the corresponding pin hole in an inserted mode, and convenience is provided for operation of workers.

A vibration friction welding amplitude positioning device comprises an upper pressing plate; the vibration spring steel is arranged below the upper pressing plate, the vibration spring steel is configured to generate reciprocating vibration through magnetic force driving, a plurality of sets of X-shaped holes are formed in the vibration spring steel, and each X-shaped hole is composed of two inclined holes which intersect with each other; the mold plate is arranged on the lower wall of the vibration spring steel; and the limiting mechanism is arranged on the upper pressing plate, is matched with the end part of the vibration spring steel and is used for limiting the vibration limit position of the vibration spring steel. Through the X-shaped hole structure arranged in an array mode, directional optimization of the mechanical property of the spring steel is achieved, in the left-right vibration process, the crossed inclined holes form a bidirectional stress guide path, vibration resistance is effectively dispersed and reduced, and rigidity adjustment is more accurate.

The purpose of the present invention is to prevent wear between a friction member and a friction surface portion provided in a non-excitation operation type rotation brake device. A rotation brake device is provided with: a holder disposed so as to be capable of moving between an engagement position at which an engagement member held between an inner member and an outer member is engaged with both members, and a release position at which the engagement is released; a return spring which is stopped from rotating on the retainer; a friction member configured to be locked with respect to the holder and movable in an axial direction; a release spring that biases the friction member in a direction away from the electromagnet via an armature that is between the electromagnet and the friction member and that faces the electromagnet in the axial direction; and a friction surface portion that receives, in the axial direction, a biased friction member that is provided so as to be attracted by the armature when the electromagnet is excited, and that applies a circumferential force to the friction member so as to move the holder to the engagement position, the friction member being provided so as to be attracted by the armature when the electromagnet is excited. At least one of the contact surfaces of the friction member and the armature is subjected to a surface treatment for reducing frictional resistance.

The utility model belongs to the technical field of tray supports, and mainly relates to a sliding tray support which comprises a base frame and a moving part arranged on the base frame in a sliding mode, the moving part is used for containing goods, the base frame is provided with a rail groove, the moving part is provided with a sliding groove corresponding to the rail groove, and the sliding groove is used for covering the rail groove from top to bottom. Rollers are rotationally assembled in the sliding grooves and roll in the rail grooves; the base frame is provided with an avoiding channel communicating with the rail groove, the avoiding channel communicates with the interior of the sliding groove in the moving part so that the rolling wheels can roll to the avoiding channel, the moving part is lifted, and the rolling wheels are moved out of the avoiding channel. The rolling wheels are assembled in the sliding grooves and roll in the rail grooves of the base frame, traditional sliding friction is converted into rolling friction, resistance is greatly reduced, even if goods are heavy, moving parts can be pushed into the compartment body along the rails more easily during manual or mechanical pushing, and pushing difficulty caused by too large friction force is avoided.

The application discloses a machining feeding device and relates to the technical field of machine tool components, which comprises a feeding base, a connecting piece, a horizontal linkage mechanism, an anti-friction assembly and a driving assembly. The driving assembly comprises a motor and a hydraulic pump, and the motor and the hydraulic pump are connected in series. The anti-friction assembly comprises a fixed seat and a rotating drum. The fixed seat is fixed to the left and right sides of the horizontal linkage mechanism and is symmetrically arranged. The front end of the fixed seat is beyond the curved surface of the front end of the horizontal linkage mechanism. Opposite inner sides are provided with bearings for fixing the rotating drum. The technical problem of the sliding friction between the horizontal linkage mechanism and the connecting piece and the waste of cooling liquid in the prior art is solved, and the technical effect of the rolling friction between the horizontal linkage mechanism and the connecting piece and the control of the spraying amount of the cooling liquid in the prior art is achieved.

A gripper which has a friction estimation module configured to estimate static and / or dynamic friction forces acting on gripping jaws is provided. The static friction force is calculated on the basis of constraining reactions whereto the gripping jaws are subjected, the constraining reactions being calculated at least as a function of an actuation force exerted on the gripping jaws, a coefficient of friction of gripper materials and / or lubricant used being known. The dynamic friction force is calculated on the basis of speed of the gripping jaws, width of sliding surfaces and distance between the sliding surfaces of the gripping jaws, the viscosity of the lubricant used being known.

The application discloses a wall-climbing chassis with a negative pressure adsorption type and a rolling wheel skirt cooperative sealing, and belongs to the technical field of wall inspection. The wall-climbing chassis comprises a machine body shell, a driving mechanism arranged in the machine body shell, a vacuum chamber arranged in the machine body shell, a negative pressure mechanism arranged between the vacuum chamber and the machine body shell, flexible skirts arranged on both sides of the bottom of the machine body shell, rolling wheels arranged at the front end and the rear end of the machine body shell respectively, limiting mechanisms respectively arranged on both sides of the rolling wheels, and an adjusting mechanism arranged between the rolling wheels and the flexible skirts. During operation, the negative pressure mechanism extracts air in the vacuum chamber, the flexible skirts are closely combined with a wall surface under the action of negative pressure, and a reliable sealing structure is formed; the driving mechanism is used for realizing the movement of the machine body shell along the wall surface; meanwhile, the rolling wheels convert static friction into sliding friction, and energy consumption is reduced; the adjusting mechanism keeps sealing when being static, releases part of pressure when being in motion, and avoids excessive friction.

The invention relates to the technical field of sawing machines, in particular to a thick-wall pipe sawing machine which comprises a sawing machine body, and the sawing machine body comprises a base, a partition plate fixedly installed on the upper surface of the base, two air cylinders symmetrically and fixedly installed on the inner wall of the base, a saw beam fixedly installed at the telescopic ends of the two air cylinders and a saw blade arranged on the saw beam. The clamping mechanism is arranged above the partition plate, the saw blade is driven by a driving mechanism in the saw beam to act, and the clamping mechanism comprises a workbench fixedly installed on the upper surface of the partition plate. According to the thick-wall pipe sawing machine, by means of the linkage design of the two first nut seats and the first lead screw, it is guaranteed that the two clamping plates conduct clamping synchronously and symmetrically, pipe deviation is avoided, guide wheels conduct automatic avoiding during clamping, reset is conducted through reset springs after releasing, a rolling contact face is formed, the pipe moving friction resistance is reduced, and the service life of the pipe is prolonged. The guide wheels are in rolling contact with the surfaces of the pipes, real-time dynamic guiding is provided, and accurate positioning of the pipes is guaranteed.

The invention discloses a foam stabilizing frame, and belongs to plastic blow molding guide tools. Comprising a guide rod and a guide roller rotationally arranged on the guide rod; all or part of the guide rollers are in contact with the air bubble film; the mounting shell is detachably connected with the guide rod; the driving roller is arranged on the mounting shell, and the driving roller abuts against the guide roller; the driving part is used for driving the driving roller to rotate, so that the rotating linear speed of the guide roller is matched with the moving speed of the air bubble film; the wind power cleaning part is used for outputting flowing air towards the guide roller; and the abutting cleaning piece abuts against the outer wall of the guide roller. The device has the beneficial effects that sliding friction damage is eradicated, speed synchronization is ensured through active driving, and surface defects such as scratches, wiredrawing and fuzzing caused by speed difference are fundamentally eliminated. A wind power and mechanical dual cleaning mechanism is adopted, so that the guide roller is ensured to be clean all the time, and pits or scratches pressed on the film surface due to dirt on the roller surface are avoided.

The utility model relates to the field of new energy battery production, and discloses a roller bearing seat mounting device and rolling equipment, the roller bearing seat mounting device comprises a fixing frame, a gap adjusting assembly and a carrier plate, the fixing frame is provided with a mounting cavity used for mounting a bearing seat, and the mounting cavity is provided with a first jacking surface and a second jacking surface; the first jacking face and the second jacking face are arranged in parallel, the gap adjusting assembly is located in the mounting cavity, a roller pin assembly is arranged on the side, facing the bearing seat, of the gap adjusting assembly, the gap adjusting assembly is located between the roller pin assembly and the first jacking face, and the carrier plate is located in the mounting cavity and arranged on the second jacking face. A roller pin assembly is arranged on the side, facing the bearing seat, of the carrying plate. The roller pin assemblies are arranged at the upper end and the lower end of the bearing seat correspondingly, so that when the bearing seat moves in the radial direction, sliding friction can be converted into rolling friction through the roller pin assemblies, friction force is reduced, and metal chippings are prevented from being generated.

The utility model relates to the technical field of conveying belt discloses a kind of anti-falling conveying belt, including support foot, the upper side of support foot is fixedly connected with conveying frame, and the outside of conveying frame is fixedly installed with anti-falling mechanism;Anti-falling mechanism includes mounting sleeve frame, and mounting sleeve frame is welded on the surface of conveying frame, and the inside of mounting sleeve frame is penetrated with connecting frame, and the surface of mounting sleeve frame is connected with fixed screw rod part.The utility model forms clamping space by the limiting plate of symmetrical setting on both sides, and the friction of cooperation conveying belt surface protruding strip is increased, the rolling and deviation of irregular bagged material can be effectively limited;Ball bearing wheel is replaced with rolling friction to slide friction of traditional side baffle, reduce resistance while guiding material to move along the direction of operation, avoid side turning, realize stable conveying.

This utility model relates to the field of abrasion resistance testing technology, specifically an abrasion resistance testing device for composite fiber fabrics. It includes a testing platform, fabric seats, a friction mechanism, and a placement rack. A reciprocating motion mechanism is installed at the top of the testing platform. Multiple fabric seats are driven by the reciprocating motion mechanism to slide back and forth along the horizontal direction of the testing platform. The friction mechanism is located at the top of the testing platform. Multiple sets of weights of varying weights are inserted into the upright rod. This utility model facilitates the abrasion resistance testing by driving multiple sets of fabric seats to reciprocate along the bottom of multiple friction heads through the reciprocating motion mechanism. The limiting component facilitates the quick assembly and disassembly of the composite fiber fabric and friction material, allowing for the replacement of different fabrics and friction materials to obtain more test data for comparison, thus improving testing efficiency. The weights and limiting rod facilitate the adjustment of the friction force between the friction material on the limiting rod and the composite fiber fabric on the fabric seat, obtaining a wider range of abrasion resistance test data. It is convenient and quick to use, improving testing efficiency.

The embodiment of the utility model provides an air guide assembly, an air conditioner indoor unit and an air conditioner, and relates to the technical field of air treatment equipment. The air guide assembly comprises a bearing structure and air guide blades. The bearing structure is provided with a mounting groove, and a first rotating part is arranged in the mounting groove; the outer side of the connecting part of the air guide blade is sleeved with a second rotating piece, and the second rotating piece is rotationally arranged on the inner side of the first rotating piece; the first rotating part and the second rotating part are arranged at intervals, and a plurality of rolling parts are arranged between the first rotating part and the second rotating part. Sliding friction between a traditional air guide blade rotating shaft and the inner wall of the mounting groove is converted into rolling friction, and rotating resistance is remarkably reduced. And the plurality of rolling pieces uniformly bear the load, so that the friction loss is further reduced. The first rotating piece and the second rotating piece are arranged at intervals, and direct rigid friction between a rotating shaft and a mounting groove in a traditional structure is avoided. The rotation continuity of the air guide blades is guaranteed, large rotation noise is avoided, and the user experience is improved.

The utility model relates to the field of forklift loading and unloading, and discloses a forklift cargo loading and unloading efficient anti-skid stable clamp which comprises a bottom plate, a displacement assembly capable of transversely moving is arranged on the bottom plate, a driving assembly for driving clamping plates on the two sides to move relatively is arranged on the displacement assembly, and a plurality of sets of rolling shafts are arranged on the bottom plate at equal intervals. The low friction characteristic of the rolling shaft is that goods directly fall on the rolling shaft when being unloaded, traditional sliding friction (such as direct contact with a bottom plate) is replaced by rolling friction, and the transverse movement resistance is reduced by about 60%-80%. In an actual scene, one person can push ton-level goods to complete position adjustment (2-3 persons are needed traditionally), and the single loading and unloading time is shortened by more than 30%.

The utility model relates to an aluminum bar furnace with a translation discharging mechanism, which comprises a body and a discharging mechanism arranged at an outlet of the body. The driving piece is installed on the bottom support, and the output end of the driving piece abuts against the tail of the aluminum bar; the device comprises a bottom support and two sets of bearing pieces, the two sets of bearing pieces are symmetrically arranged above the bottom support, a V-shaped bearing space is formed between the two sets of bearing pieces, each bearing piece comprises a bottom plate and a plurality of sets of guide rollers arranged along the extending path of the bottom plate at equal intervals, and the guide rollers are rotationally arranged on the bottom plate. According to the utility model, the aluminum bar can be quickly positioned by utilizing the V-shaped bearing space formed by the two bearing pieces, so that the aluminum bar is ensured to stably translate on a preset path; and the rotatable guide rollers guide the aluminum bar, sliding friction generated when the traditional aluminum bar translates can be converted into rolling friction, scratches and indentations on the surface of the aluminum bar are reduced, the surface quality of the aluminum bar is effectively protected, and the qualified rate of products is increased.

The utility model relates to the technical field of building construction, and discloses a building construction material conveying device which comprises a supporting frame, a loading and unloading mechanism is arranged on the outer side of the supporting frame and comprises a sliding plate, a supporting plate is arranged below the sliding plate, and the two side faces of the sliding plate are in sliding connection with the two side faces of the supporting plate through sliding blocks. The inner wall of the supporting plate is rotationally connected with a plurality of rollers, the outer surface of each roller is slidably connected with the bottom face of the sliding plate, the front face of the supporting plate is movably hinged to a baffle, the back face of the baffle makes contact with the front face of the sliding plate, and the two side faces of the sliding plate are fixedly connected. According to the building construction material conveying device, the sliding plate, the supporting plate and the rolling wheels are arranged, after materials are conveyed to a designated floor, workers can pull the sliding plate and the materials to the floor ground where the materials are located and then unload the materials, the workers can unload the materials conveniently, and the sliding plate can slide above the rolling wheels; and sliding friction can be reduced when a worker drags.