12results about How to "Flat contact surface" patented technology

The utility model provides an engine exhaust assembly welding tool, and relates to the technical field of engine exhaust assembly welding tools, the engine exhaust assembly welding tool comprises a base, and a clamping device is arranged on one side of the base. The engine assembly can be arranged on the top of the base in a sleeving mode, the center connecting rod of the engine assembly is placed in the round hole and connected with the base, the concentricity of the installation edge and the inner ring is ensured, then the adjusting screw is screwed to drive the expansion block to be pressed downwards in place, the supporting block is ejected outwards in the inner wall of the sliding groove, and the appearance of the installation edge is fixed. Then the extrusion screw is tightened to abut against and fix the ejected supporting block, the mounting seat and the mounting edge of the assembly are fixed and limited to facilitate welding treatment, the welding deformation is reduced, the welding quality is improved, meanwhile, the expansion operation is simple, only the adjusting screw needs to be tightened to press the expansion block in place, and the expansion efficiency is improved. And a lot of operation time is saved.

The utility model discloses a coal mining machine hydraulic auxiliary supporting device suitable for large-gradient down mining, which comprises a buckling part, and the vertical section of the buckling part is in a] shape with a backward opening; the rear surface of the buckling part is connected with an upper supporting seat and a lower supporting seat; the upper supporting seat is backwards connected with a cylinder body for supporting a hydraulic cylinder; the front part of the cylinder body is backwards and downwards connected with an inclined supporting column, and the inclined supporting column is backwards connected with a lower supporting seat; extension rods of the supporting hydraulic cylinders are forwards connected with the supporting top plate; the upper and lower supporting seats and the supporting hydraulic cylinder form a group of supporting devices; two or more supporting top plates are arranged side by side at intervals, each supporting top plate is connected with three sets of supporting devices, and the three sets of supporting devices are evenly arranged at intervals left and right. Through the supporting hydraulic cylinders, the state of the supporting top plates can be adjusted, the stress conditions of different supporting top plates and different parts of the same supporting top plate can be balanced, the stress of the guide sliding shoes is shared, the safety of down-dip mining operation is ensured, the abrasion of the guide sliding shoes of the coal mining machine is reduced, and the phenomenon that the coal mining machine turns over on one side is avoided.

The utility model discloses a road bridge pavement construction flatness detector, and relates to the technical field of pavement construction. The device comprises a measuring scale; the top of the line drawing device is in sliding connection with the inner wall of the measuring scale; the outer wall of the white board is fixedly connected with the inner wall of the measuring scale; the outer wall of the protective shell is fixedly connected with the two ends of the measuring scale; the outer wall of the storage device is rotationally connected with the inner wall of the protective shell; the bottom of the sliding rail is fixedly connected with the inner wall of the measuring ruler, the line drawing device is arranged, so that the ground shape is drawn on a white board, measurement is convenient, meanwhile, under pushing of a compression spring, the line drawing position is not prone to being broken, and therefore obtained data are clearer and more complete; the purpose of facilitating the measurement of the pavement flatness by the measurement personnel is achieved.

The utility model discloses a kind of for winding pipe high-speed wear-resistant type sizing sleeve, it is related to winding pipe production equipment technical field, including cooling copper base, one end of cooling copper base is installed on extrusion die head, the other end of cooling copper base is fixedly installed with connecting disc, connecting disc is fixedly installed with four groups of disc screw rod of annular array distribution in the side away from cooling copper base, several forming disc are installed on disc screw rod, the installation interval of forming disc from the side close to connecting disc to the side away from connecting disc increases sequentially;The utility model changes the boss shape of cooling copper base, so that transition disc does not contact with raw material, reduces replacement frequency;Meanwhile, forming disc uses high carbon steel to carry out hardness treatment, increases self hardness, contact surface carries out polishing treatment, improves service life.

The present invention provides a single-compartment knee joint prosthesis, belonging to the field of medical device technology. It includes a femoral component, a pair of ridge nail components are connected to the inner wall of the femoral component; it also includes a tibial polyethylene gasket, the bottom of the tibial polyethylene gasket is connected to the tibial component, the tibial component includes a tibial metal tray clamped with the tibial polyethylene gasket, a keel is fixedly connected in the middle of the bottom of the tibial metal tray, and a pair of tibial side bone nails are fixedly connected to one side of the bottom of the tibial metal tray. The present invention increases the stability of the prosthesis by setting movable parts, and adapts to more patients by controlling the extension degree of the side edges according to the different bone qualities of the patients. The operation is convenient, and the single-radius prosthesis and the protective layer are set to avoid the prosthesis falling off due to the smooth curved surface of the side of the prosthesis, which affects the surgical efficiency. At the same time, the claw groove and the buckle clamping of the protective layer make the nail groove sealed to prevent the knee effusion from flowing into and solidifying, which increases the difficulty of later disassembly and replacement.

The utility model relates to building technical field especially a cup mouth foundation steel structure column installation horizontal positioning tool, including four resistance positioning mechanism, four resistance positioning mechanisms two two symmetry settings, every resistance positioning mechanism includes clamping mechanism, two fixed plates are fixed on the clamping mechanism symmetry, two fixed plates are common and are equipped with first threaded rod and are screwed, the first threaded rod one end rotates and is equipped with resistance plate, the other end is equipped with first hand wheel fixedly, the utility model discloses when using, utilize four clamping mechanisms and fix on the four around of pouring concrete fence, subsequently utilize the screwing of first threaded rod to promote resistance plate, utilize multiple resistance plates and stop up steel structure column, and then adjust the perpendicularity of steel structure column and adjust, and simple preparation, low cost can be used, in addition, the contact area of multiple resistance plates and steel structure column is big, and simultaneously, the contact area is also enough flat, can ensure the adjustment of steel structure column perpendicularity adjustment.

The invention relates to the technical field of diode processing, in particular to tin storage equipment for photovoltaic module diode processing, which comprises a belt conveyor, the side wall of the belt conveyor is fixedly connected with a shell, the side wall of the shell is fixedly connected with a linear driver, and the moving end of the linear driver is fixedly connected with the top of a first electric push rod. The lower end of the first electric push rod is connected with a vacuum suction pen, and the side wall of the lower end of the first electric push rod is fixedly connected with a magnetic block. And the side wall of the belt conveyor is fixedly connected with a placing frame. In the process that a tin block taking area is moved to an ultrasonic vibration head and tin block machining area, a driving gear is automatically driven to rotate by utilizing the moving power of a belt, so that a grinding plate moves back and forth to grind the contact area of a tin block and a cooling fin, the contact surface is smooth, and the machining efficiency is improved. The contact area of the subsequent tin block and the radiating fin is increased, the subsequent tin block is ensured to be in close contact with the radiating fin, and effective transmission of ultrasonic energy is promoted.

The invention relates to the technical field of metal cold forging, and discloses a high-purity oxygen-free copper needle type heat dissipation substrate cold forging device and a cold forging technology.The high-purity oxygen-free copper needle type heat dissipation substrate cold forging device comprises a hydraulic machine, a cold forging table is arranged in the hydraulic machine, and a driving assembly used for conveying a heat dissipation substrate to be subjected to cold forging into the cold forging table is arranged on the outer surface of the hydraulic machine; a containing assembly used for containing a heat dissipation substrate to be subjected to cold forging is arranged above the driving assembly, an adding assembly used for reducing friction and abrasion in the cold forging process is arranged above the driving assembly, the containing assembly is driven by reciprocating motion of the conveying belt to do reciprocating motion, and then the two adaptation frames are sequentially placed on the upper surface of the cold forging table; due to the introduction of the automatic conveying belt, the placing and moving process of the heat dissipation substrate is more efficient and faster, and compared with traditional production, when one adaptation frame is subjected to cold forging on the cold forging table, an operator can immediately carry out follow-up treatment on the heat dissipation substrate subjected to cold forging on the other adaptation frame.

A semiconductor structure and a forming method thereof, the forming method comprising: providing a substrate, including a substrate and a bottom fin material layer on the substrate, the substrate including a first device region and a second device region; forming a first fin material layer on the bottom fin material layer, the material of the first fin material layer being different from the material of the bottom fin material layer; removing the first fin material layer located at the second device region to form an opening exposing a top of the bottom fin material layer; forming a second fin material layer in the opening; and performing a fin patterning process to pattern the bottom fin material layer into a bottom fin, the first fin material layer into a first device fin standing on the bottom fin of the first device region, and the second fin material layer into a second device fin standing on the bottom fin of the second device region. The formed second device fin and the contact surface of the first device fin with the bottom fin are both relatively flat, improving the height consistency of the second device fin and the first device fin.

The utility model belongs to the field of logistics storage and transportation technology, concretely relates to a heavy load shuttle vehicle, device includes two fixed baffle of shuttle vehicle body and setting on two end portions, sets up between two fixed baffle and is located on the rear baffle and front baffle of two end portions of fixed baffle. The front baffle includes two respectively hinged on the end portion of two fixed baffle baffle structure. The utility model through the mode of rotation connection of front baffle and fixed baffle, both guaranteed the tray of carrying goods when entering the shuttle vehicle, the contact surface of tray is even, overcomes the problem of carrying jamming, and at the same time after the tray all enters the shuttle vehicle, the front baffle cooperates with the fixed baffle and constitutes the fixed space of limiting the tray sliding out through the mode of rotation, guarantees the stability of goods when the shuttle vehicle transportation.