2214results about How to "Increase friction" patented technology

The utility model relates to the field of track fixing parts, and discloses an anti-skid stable track fixing part which comprises a bottom plate, the top of the bottom plate is fixedly connected with two sets of limiting parts, the sides, close to each other, of the two sets of limiting parts are in contact with track parts, and the tops of the limiting parts are provided with mounting mechanisms. And the mounting mechanism comprises a fixing plate, a mounting groove is formed in the top of the limiting piece, the fixing plate is mounted in the mounting groove, the fixing plate is fixedly connected with the limiting piece through a bolt piece, and an elastic piece is arranged in the fixing plate. According to the utility model, the bolt piece is tightened above the fixed plate, the fixed plate displaces to drive the extrusion piece to move downwards and to be in contact with the bump, and the surface of the bump is extruded by the inclined surface at the bottom of the extrusion piece, so that the bump is subjected to transverse pressure, the transverse position of the track piece is adjusted, and the stability and the precision of track installation are improved.

The utility model discloses a TPU (thermoplastic polyurethane) film tension detection device, which belongs to the technical field of tension detection, and comprises two pressing assemblies and a clamping assembly, each pressing assembly comprises a fixed block and two pressing blocks, the inner side of each fixed block is provided with two inclined surfaces, the two pressing blocks are driven by the inclined surfaces to get close to each other, and the two pressing blocks are clamped by the clamping assembly. The clamping assemblies are arranged at the outer ends of the abutting blocks, the two abutting blocks can be close to each other through pulling of the threaded rods and matching of the inclined faces, at the moment, the two pressurizing air bags are squeezed to be compressed, the clamping air bags communicated with the pressurizing air bags are inflated to expand, the thin film is placed between the two clamping air bags, and then the thin film is clamped. When the thin film is clamped, the expanded clamping air bag extrudes the thin film so as to clamp and fix the thin film, and due to the characteristics of softness and large friction force of the clamping assembly, the surface of the thin film is not easy to deform when the thin film is clamped with force, so that the reliability of experimental data is improved.

The utility model discloses a stent which is applied to an airway or an esophagus and comprises a framework and a lining film, and the framework is a tubular object which is hollow inside and provided with a mesh structure on the surface; the lining film is attached to the inner surface of the framework, a plurality of protrusions are formed on the outer wall of the lining film, the protrusions penetrate through meshes of the framework to be exposed on the outer side of the framework and are attached to the inner wall of the airway or the esophagus, and a gap is formed between the outer surface of the framework and the inner wall of the airway or the esophagus. The stent provided by the utility model not only solves the defects caused by a mesh structure of a metal bare stent, but also solves the problems that the stent is easy to displace due to low adhesive force between a membrane structure and an airway / esophagus wall, and retention is easy to cause due to the fact that the membrane obstructs the flow of secretions.

The utility model relates to the technical field of oil casing pipe mark spraying, in particular to an automatic screwing device for a thread protector, which comprises a casing pipe base, a driving assembly and a fixing assembly, and the casing pipe base is used for placing a casing pipe in a horizontal state; the driving assembly is connected with the sleeve base so as to drive the sleeve base to rotate; the fixing assembly is arranged on one axial side of the sleeve base and comprises a fixing support, a main rod, a first clamping part and a second clamping part, the first clamping part and the second clamping part are connected to the main rod in parallel, an outer arc face is arranged on the first clamping part, an inner arc face matched with the outer arc face is arranged on the second clamping part, and the fixing support is arranged on the main rod. The outer cambered surface and the inner cambered surface are oppositely arranged, a clamping space is formed between the outer cambered surface and the inner cambered surface, and the clamping space is used for fixing the thread protector; the fixing assembly is arranged to fix the thread protector, the sleeve is automatically screwed with the thread protector when rotating, and the installation efficiency of the thread protector is improved.

The utility model discloses an anti-tilt scaffold which comprises a steel frame and two crossed supporting rods arranged on the two sides of the steel frame, the outer sides of the four corners are respectively provided with a pair of fixing pieces, an inner rod is arranged between the fixing pieces, a plurality of limiting holes are formed in the inner rod, a sleeve rod is arranged on the outer side of the inner rod, and the sleeve rod is connected with the steel frame. An adjusting knob is arranged on the sleeve rod, through holes are formed in the two sides of the lower portion of the sleeve rod respectively, an inserting rod is arranged at the bottom of the sleeve rod, a spring is arranged on the outer side of the inserting rod, a base is arranged at the bottom of the inserting rod, rotating pieces are arranged on the two sides of the base respectively, and a bottom plate is arranged below the rotating pieces. According to the scaffold, the two sides of the steel frame can be supported, the steel frame is prevented from inclining towards the two sides, the safety risk of workers is reduced, and through friction between the inserting rods and the sleeve rods and the buffering effect of the springs, shaking of the scaffold can be reduced, and the scaffold is stabilized.

The utility model relates to the technical field of automobile connector fixing, and discloses an automobile connector fixing structure which comprises a connecting mechanism, a fixing mechanism and a main body mechanism, the connecting mechanism is located at the top end of the fixing mechanism, the fixing mechanism is located at the top end of the main body mechanism, and the connecting mechanism comprises a first connector. A second connector is connected to the inner wall of the first connector in a sleeved mode, a clamping groove is formed in the outer wall of the second connector, a clamping block is connected to the inner wall of the clamping groove in a clamped mode, and a spring is fixedly connected to the back face of the clamping block. The spring is arranged between the first connector and the clamping block, so that the clamping block can be controlled to contract by extruding the spring, and when the clamping block enters the bottom of the clamping groove, the spring provides support for the clamping block, so that the clamping block can be tightly matched with the clamping groove, and the first connector and the second connector can be stably connected; the connector is prevented from accidentally falling off, and the structural stability of the automobile connector at the connecting part is ensured.

This utility model provides an emergency collision avoidance device for highway engineering, belonging to the field of road engineering technology. It includes a collision avoidance barrel body, inside which are four honeycomb aluminum elements arranged in a circular array. Four stabilizing components are arranged in a circular array at the bottom of the collision avoidance barrel body, serving to stabilize the body. Four placement components are also located at the bottom of the body, each corresponding to one of the stabilizing components, for placing the stabilizing components. A connecting component is located at the top of the body. This utility model, through a stabilizing component composed of a slider, hexagonal prism, connecting seat, and base, can expand outwards to form a near-triangular support structure, significantly lowering the center of gravity and improving the overall stability of the emergency collision avoidance device.

The utility model discloses a high-pressure injection molding platform of a high-speed copper cable, which comprises an injection molding assembly for carrying out injection molding on a cable of the high-speed copper cable, and further comprises a clamping tool I and a clamping tool II, the clamping tool II comprises a base, and the base is provided with a groove I for installing the cable at the rear end of the high-speed copper cable; an upper cover is hinged to one side of the upper end face of the base, a groove II matched with the groove I is formed in the lower surface of the upper cover, and anti-skid layers are arranged on the contact faces of the groove I and the high-speed copper cable and the contact faces of the groove II and the high-speed copper cable. A buckle used for fixing the closed upper cover is hinged to one side wall of the base. A PCB at the front end of a high-speed copper cable is fixed through the clamping tool I, a base groove I of the clamping tool II is matched with an upper cover groove II, a cable at the rear end is limited, front and back dual fixation is formed, meanwhile, the friction force between the anti-skid layers on the groove I and the groove II and a cable sheath is increased, and the cable is prevented from sliding.

The utility model discloses a kind of steel wire rope automatic rope winding machines, by setting torsion releasing device, release the torsion generated in the process of winding rope of steel wire rope, prevent the disorder of rope reel caused by torsion of steel wire rope, tension adjusting device, the tension of steel wire rope in the process of winding operation can be adjusted in real time, so that winding is more regular, by increasing the friction of steel wire rope to slow down its speed, reach the purpose of adjusting tension;And rope reel butt joint device realizes automatic lifting transfer of the winding reel and the storage of steel wire rope by lifting mechanism and transmission mechanism, the degree of automation of the in-place, butt joint and rotating action of steel wire rope reel is high, winding is more efficient;While the rope guiding roller, line pressing mechanism and line arranging mechanism arranged between rope reel butt joint device and tension adjusting device, so that the line arranging and winding action cooperation is more smooth, and line arranging mechanism uses positive and negative screw rod to carry out automatic reversing, can realize the orderly storage of steel wire rope, improve the operation efficiency of steel wire rope storage.

The utility model relates to two -wheeled electric vehicle technical field especially relates to a two -wheeled electric vehicle adjustable height's rear foot rest support. It includes C shaped mounting bracket, and the bottom plate of C shaped mounting bracket is provided with hexagonal wrench box, and the top of hexagonal wrench box is provided with the sliding cover, and the inside screw thread cylinder is provided in C shaped mounting bracket top plate, and the inside screw thread cylinder is provided with adjusting assembly, and the top of adjusting assembly is provided with foot rest subassembly, and the inner wall of C shaped mounting bracket is provided with the relaxation component. The utility model can realize the adjustment of foot rest subassembly height through the rotation of the runner, and the operation is simple and laborsaving, and the user can easily change the foot rest height according to the demand, provides the personalized comfortable experience for the user of different height or cycling habit, greatly improves the convenience of use.

This utility model relates to the field of wind power yaw technology and discloses a waste oil collection device for the maintenance of a wind turbine yaw system. The device includes a yaw main wheel and a track component. The track component includes a calibration plate with a fixing groove at the top. A fixing component is inserted into the inner wall of the fixing groove, and a snap-fit ​​component is fixed to the bottom of the inner wall of the fixing groove. A snap-fit ​​groove is formed at the bottom of the fixing component, and the inner wall of the snap-fit ​​groove is snap-fitted to the surface of the snap-fit ​​component. A sloping shovel is fixed to the side of the fixing component away from the calibration plate, and a backhoe is fixed to the side of the sloping shovel closer to the bottom of the calibration plate. This utility model secures the fixing component to the fixing groove of the calibration plate, ensuring that the bottom of the sloping shovel and the backhoe are tightly fitted to the top of the calibration plate. Thus, during the forward rotation of the yaw main wheel, the sludge on the inner wall of the yaw main wheel is scooped up by the sloping shovel, and the backhoe similarly scoops up the sludge during the reverse rotation. Workers only need to clean the sloping shovel and backhoe periodically.

The beverage bottle convenient to grasp comprises a bottle body and an inner groove, the top of the bottle body is connected with a bottle opening, the surface of the bottle body is provided with a label face used for being attached with a label, and the surface of the bottle body and the bottom of the label face are annularly provided with a plurality of inwards-sunken grabbing grooves. The inner grooves are formed in the surface of the bottle body, the grabbing grooves are arranged in a V shape, reinforcing strips are arranged on the surface of the bottle body and located in the middles of the grabbing grooves, and the grabbing grooves are annularly formed in the bottom of the label surface of the surface of the bottle body, so that additional grabbing acting points are provided for a user; by means of the structure, fingers can be naturally embedded into the bottle body, the friction force between the hand and the bottle body is increased, the grabbing grooves are arranged in the V shape and further fit with the shapes of the fingers, the grabbing comfort and stability are improved, and a consumer can more easily and firmly grab the beverage bottle when opening the bottle cap for drinking beverages.

This utility model relates to the field of wire harness management, and more particularly to an adaptive deformation OBC power cable fixing structure, including two fixing rings with bolt holes at corresponding positions. The OBC power cable is placed between the two fixing rings. The cable is fixed by tightening bolts through the bolt holes, allowing adjustment of the fixing tightness. Spring A allows the support frame to slide elastically, adapting to height differences caused by changes in cable diameter, ensuring the center of the clamp is always aligned with the cable axis. The clamp rotates elastically through the coordinated action of spring B and spring plates, conforming to the curved surface of cables of different diameters. Anti-slip pads enhance friction, while rubber pads and protective pads reduce rigid contact wear, absorbing external impacts such as vehicle vibrations and preventing cable loosening or sheath damage due to shaking. This meets the stable fixing requirements of OBC power cables under complex working conditions.

The utility model relates to a mobile phone support structure capable of rotating a screen, which is characterized in that a supporting seat is fixedly connected with a support fixing mechanism, a connecting block is fixedly connected with a screen fixing mechanism, the end surface of the supporting seat is provided with a groove matched with a universal ball, a threaded cover is in threaded connection with the end part of the supporting seat, and the end surface of the threaded cover is provided with a through hole; the connecting block penetrates through the through hole and is fixedly connected with the universal ball, a limiting ring is arranged in the threaded cover, the universal ball is rotationally arranged in the limiting ring, the inner diameter of the two ends of the limiting ring is smaller than that of the middle section, the limiting ring can slide in the axial direction of the threaded cover, and a damping elastic component is fixedly arranged at the end of the limiting ring. The other end of the damping elastic component is fixedly connected with the inner wall of the threaded cover. The limiting ring is pushed by the damping elastic component to abut against the universal ball, so that the universal ball is in close contact with the inner wall of the groove, vibration of a vehicle body is prevented from being transmitted to the universal ball, and looseness is avoided; the resistance cushion layer is arranged on the inner wall of the groove, friction force is increased, and therefore the universal ball is further prevented from rotating.

The utility model relates to the technical field of automobile door panel processing, and discloses a welding tool for assembling an automobile door panel, which comprises a machine body, a fixed adjusting component and a protective component are arranged above the machine body, the fixed adjusting component comprises a rectangular frame, and a door panel body is placed on the upper surface of the rectangular frame. According to the welding tool for assembling the automobile door panel, through combination of an air cylinder and a rubber pad, stable clamping of a door panel body is achieved, the rubber pad protects the surface of the door panel from being damaged, the adaptability of equipment to door panels of different sizes is enhanced through a limiting rod and a swing piece, the height of a rectangular frame is adjusted through a traction rope, and the door panel is accurately positioned; the welding assembly supports double-face welding, the efficiency is greatly improved, a protective curtain and a collecting frame are matched with a breathable grid plate, welding smoke is effectively extracted and filtered, the air quality is improved, the health of operators is guaranteed, residues are conveniently collected and discharged through the design of a scraper, impurity retention is avoided, the welding process is optimized through the overall structure, and the production efficiency, the environmental protection property and the safety are improved.

The utility model provides an orthopedics distractor relates to medical appliance technical field, the utility model discloses a sliding rod, the outer surface sliding connection of sliding rod has the sliding block, the both ends of sliding rod are fixedly connected with auxiliary block and baffle, the top of sliding block and auxiliary block all is fixedly connected with the pusher, the both sides of pusher are provided with antiskid device, the bottom of sliding block and auxiliary block all is fixedly connected with the distractor, two the distractor side close to all can detachable connection has the auxiliary frame, the utility model discloses a threaded rod, screw hole block can drive the synchronous sliding of sliding block on the outer surface of sliding rod, until with the extension rod of sliding block reaches the appropriate position, rotates the bolt again, makes the bolt fixed between the extension rod and sliding rod, and threaded rod can also be fixed between the sliding block and sliding rod, and then be favorable to preventing the displacement of the distractor and affecting the normal operation of operation.

The utility model discloses a disc-shaped suspension insulator triple tension string which comprises three adjusting discs, a hanging plate is installed above the adjusting discs, a disc-shaped suspension insulator is installed above the hanging plate, a three-to-two yoke plate is installed at the top of the disc-shaped suspension insulator, a yoke plate is installed at the top of the three-to-two yoke plate, and a tension spring is installed at the top of the yoke plate. The adjusting disc comprises a shell, a fixing block is fixed in the shell, a grading ring is arranged on the outer side of the disc-shaped suspension insulator, and the top of the grading ring is fixedly connected with the three-to-two yoke plate. According to the disc-shaped suspension insulator triple strain insulator string, the adjusting disc is arranged, a hexagonal wrench rotates a hexagonal block, the hexagonal block drives a worm to rotate, the worm rotates to drive a worm wheel to rotate, the worm wheel drives a bolt inserted into a through hole to move, and therefore the distance between a hanging point fitting and a hanging plate can be adjusted, operation is simple and convenient, and the bolt and a nut do not need to be loosened; bolts are inserted into different holes, and then the screwing nuts are screwed to adjust the distance.

The utility model discloses a kind of hua bunt fish egg hatching devices, it includes hatching box, the inner wall of hatching box is fixedly connected with two symmetrical partitions by bolt, the front side of hatching box is fixedly connected with bottom plate, the top of bottom plate is fixedly connected with oxygenation pump by bolt, the gas supply pipe of oxygenation pump extends to the inner chamber of hatching box, the top of bottom plate is fixedly connected with filter cartridge, the left and right sides of filter cartridge are all communicated with connecting pipe, air filter cotton is installed in the inner wall of left connecting pipe, the inner chamber of filter cartridge is provided with collection box. The utility model is inhaled by connecting pipe by oxygenation pump to air, at this time, impurities in gas are filtered by the setting of air filter cotton, then oxygenation pump sends filtered gas to water by bubble stone, that is, the situation that impurities in gas are inhaled into water can be effectively reduced, and the purpose of improving water cleanliness is achieved.

The utility model relates to the field of controller silica gel button, disclose silica gel button edge anti -warp reinforcing edge structure, including silica gel base plate, the top fixedly connected with silica gel button of silica gel base plate, the outside fixedly connected with anti -warp reinforcing mechanism of silica gel base plate, the outside fixedly connected with antiskid protection mechanism of silica gel button, the anti -warp reinforcing mechanism includes reinforcing tensile edge, the outside fixedly connected in the outside of silica gel base plate of reinforcing tensile edge, the outside of reinforcing tensile edge is equipped with metal protective cover edge. In the utility model, through fixing reinforcing tensile edge outside silica gel base plate, then the metal protective cover edge is connected with the inside of shell simultaneously, and the precise positioning and locking are realized by using anti -shift joint convex point, positioning recess, extension locking boss and fitting groove, form stable connection, in this way can effectively enhance silica gel base plate edge tensile strength, resist external collision scratch, restrain edge warping deformation.

This utility model discloses a MONO mesh wig cap with a lace front, comprising a main body. The hairline area of ​​the main body is made of lace mesh, the hairline area is made of MONO mesh, and the sides and back are made of elastic mesh. The inner edge of the wig cap is sewn with an anti-slip band, and a 10mm side strap is provided along the center back. The 10mm side strap is equipped with a plastic adjustment buckle, and the outer edge is surrounded by a ribbon. The elastic mesh adapts to the head circumference using its elasticity, while the MONO mesh supports the volume of the hairline using its hardness and density. The anti-slip band is sewn to the edge of the wig cap to increase friction. The 10mm side strap, with a buckle, is sewn to the back of the wig cap for adjusting tightness. When worn, the lace mesh fits the forehead, the MONO mesh supports the volume of the hairline, the elastic mesh adapts to the head circumference, the anti-slip band prevents shifting, the 10mm side strap can be adjusted according to the head circumference, and the ribbon reinforces the edge, achieving a natural, comfortable, and stable wearing effect.

The utility model relates to the technical field of takeoff and landing protection equipment, and discloses takeoff and landing protection equipment for an unmanned aerial vehicle, which comprises an unmanned aerial vehicle body, and a display connection signal screen is fixedly mounted on the outer wall of the unmanned aerial vehicle body. The foldable light and thin mounting plate is rapidly folded and unfolded through the rotating hinge and the small hydraulic push rod, in the flight state, the mounting plate is folded and tightly attached to the fuselage, air resistance is effectively reduced, the flight efficiency is improved, before landing, the hydraulic push rod rapidly pushes the mounting plate to be unfolded to the horizontal position, and the supporting area is enlarged; the unmanned aerial vehicle is in direct contact with the ground in cooperation with an anti-skid balancing weight, the friction force between the unmanned aerial vehicle and the ground is increased, the unmanned aerial vehicle is effectively prevented from sliding or rollover after landing, meanwhile, an inflation pump is arranged in an inflation box to inflate a buffering air bag, a flexible protection layer surrounding the unmanned aerial vehicle is formed, falling impact is effectively relieved, and the unmanned aerial vehicle is protected from falling. And the effect of improving the protection safety is achieved.

The present invention relates to a process for manufacturing a wind turbine blade and the blade thus obtained, according to which the general body of the blade is determined by forming a central structural box (3) that is determined by a series of longitudinal structural profiles (3.1, 3.2 and 3.3) attached to one another, having on the structural box (3) an outer skin (2) acting as a fairing; having, in relation to the mouth of the general body of the blade or of two of the structural segments thereof, when said general body is segmented, at least one receiver component (9), intended to embed said mouth therein, a deformable material (7) being introduced that is placed in cavities (6) defined by the longitudinal profiles (3.1, 3.2 and / or 3.3) and a housing (9.1) of the receiver component (9), to subsequently proceed to the attachment, between the general body of the blade or between the structural segments thereof and the corresponding receiver component or components (9) applying pressure on the deformable material (7) through compression means (8), thus forming the blade of a wind turbine.

The utility model provides a kind of wound dressing fixing band, belong to dressing fixing band application technical field.The wound dressing fixing band, including dressing bandage and the dressing area being equipped with the bottom of dressing bandage, it is characterized by: two empty ways are equipped with in the inside two sides of dressing bandage, two medical ropes are worn in the inside two empty ways, and two medical ropes two ends are integrally made into the pulling head, and are connected by pulling head mutual rope knot, wherein, by the two empty ways being equipped with in the inside two sides of dressing bandage and the reinforcing ring being equipped with in the inside two ends empty way and the combination design of medical rope and pulling head, user can adjust the tightness of dressing by pulling the pulling head of medical rope two ends, and medical rope is connected by rope knot, effectively solve the problem that dressing is easy to slide or overflow from the edge of fixing band.

This utility model discloses a disc-lock type scaffolding, relating to the field of scaffolding. The utility model includes four bases and multiple crossbars. Each of the four bases has a stud welded to its top, and the outer wall of the stud is threaded with an adjusting nut. A vertical pole is fitted onto the top of the stud. This utility model incorporates a pin, anti-slip plate, slot, locking plate, slide block, spring, and push block. After the hook is hung on the corresponding crossbar, the worker first pushes the push block, which moves the slide block. The slide block then compresses the spring and moves the locking plate. Next, the anti-slip plate is rotated, causing its inner wall to fit against the outer wall of the crossbar, and the locking plate rotates into the slot. Then, the push block is pushed in the opposite direction, and the spring stretches, causing the slide block to return to its original position. When the locking plate is fully engaged in the slot, the anti-slip plate is locked in place. The anti-slip plate and hook form a ring-shaped engagement on the crossbar, increasing friction and improving the stability of the hook and footboard.

The utility model provides a kind of self-adapting conformal elastic bone plate, including bone plate body, the upper end of bone plate body is equipped with multiple limit openings, the inner end of limit opening is threadedly connected with stud, and the end of stud close to limit opening is fixedly connected with locking inner column, and the outer end of locking inner column is provided with several anti-loosening threaded parts, by the thread cooperation of stud and limit opening and the setting of locking inner column and anti-loosening threaded part, the preliminary positioning and stable locking of bone plate body on bone surface are realized, prevent loosening and falling off, and multiple groups of follow-up self-adapting horizontal plates can generate elastic deformation according to irregular arc or curved surface of bone surface affected area under the action of spring piece, self-adapting conform to bone surface profile, fill gap, the magnetic connection of electromagnetic side block and metal inner block, further fixed follow-up self-adapting horizontal plate, ensure that bone plate and bone surface are closely adhered, and flexible contact surface increases contact comfort, avoid damaging bone surface tissue.

The utility model relates to the technical field of yarn reversing frames, and discloses a yarn reversing frame of a circular knitting machine, which comprises a mounting frame, a supporting frame rotationally mounted on the surface of the mounting frame through a rotating shaft, a supporting rod fixed at the top of the supporting frame, and a limiting rod inserted in the supporting rod, by arranging a spring, the supporting plate and the adjusting assembly, when the wire coil is inserted into the surface of the supporting plate, friction force between the surface of the supporting plate and the wire coil can be increased through annular rubber protrusions on the surface of the supporting plate; therefore, the situation that the silk thread pulls the silk roll to fall off from the surfaces of the supporting plates due to the fact that the silk thread is possibly clamped when the silk thread is rapidly stripped from the surface of the silk roll is reduced or avoided, the production efficiency is improved in disadvantage, the positions of the two supporting plates can be adjusted through the adjusting assembly, and therefore the distance between the two supporting plates is adjusted, and the production efficiency is improved. And therefore, the adaptability of the supporting plate to wire coils with different sizes and specifications is improved, and the use is relatively convenient.

The utility model discloses an apparatus for improving the surface quality of plate and strip products, comprising roller components, a cloth layer, two fixing components and a transmission component; the roller components are rotatably arranged on a support seat; the cloth layer is wrapped on the outer surface of the roller components; the two fixing components are respectively arranged on the two end surfaces of the roller components and configured to fix the cloth layer; the transmission component is connected with the rotating shaft of the roller components and configured to drive the rotation of the roller components. The utility model can reduce defects such as scratches and indentation caused by roller surface wear, burrs or impurities; improve the friction between the roller and the material, avoid slipping of the material during transmission or processing; disperse the local pressure of the roller on the material, make the force more uniform; reduce the interference of impurities on the processing process, indirectly improve the product quality.

The utility model relates to guiding device technical field, and disclose a kind of electromechanical pipeline pre-burying guiding device, including bottom plate, the bottom plate top side is fixedly connected with guide cylinder, the bottom plate top side is fixedly connected with fixed box, the bottom plate top side is fixedly connected with U-shaped frame, the bottom plate top is fixedly connected with several arc support plates, the arc support plate is located U-shaped frame bottom, be equipped with fixed assembly on the U-shaped frame, this fixed assembly is fixed to electromechanical pipeline;Only need to pull pull ring, rotate pull rod, the rotation of limiting plate can be realized to fix or loosen pipeline, without tightening a large number of bolts one by one, greatly improve construction efficiency;Elastic pad of limiting plate bottom end is matched with arc support plate, when fixing pipeline, elastic pad can increase the friction between pipeline, and can adapt to the fixed demand of different pipe diameter pipeline, avoid the damage to pipeline surface simultaneously, ensure the stability of fixed.

This utility model discloses a wall hole sealing device for building construction, comprising a columnar sealing body adapted to the size of the pre-reserved hole in the wall, a central hole penetrating the center of the sealing body, an expansion mechanism penetrating the central hole inside the sealing body, and a vertical through groove on the outer wall of the sealing body for changing the diameter of the sealing body under the action of the expansion mechanism; several anti-slip protrusions are evenly arranged on the outer circumference of the sealing body to enhance the friction between the sealing body and the wall; a sealing rubber sleeve is fitted on the outer circumference of the sealing body to improve the sealing performance between the sealing body and the wall hole. The wall hole sealing device provided by this utility model, through the design of the expansion mechanism, enables the sealing body to fit tightly against the wall, increasing the friction and adhesion between the sealing device and the wall, effectively preventing the sealing device from loosening or falling off, and improving the sealing firmness.