17results about How to "Fix tight" patented technology

The invention discloses a ramp bridge small box girder prefabricating formwork system, and relates to the technical field of ramp bridge small box girders, the ramp bridge small box girder prefabricating formwork system comprises a formwork mechanism, an auxiliary mechanism is arranged on the formwork mechanism, the auxiliary mechanism comprises a main shell, two flow guide shells and two long-strip strain gages, an auxiliary shell is arranged on one side of the main shell, and the two flow guide shells are arranged on the other side of the main shell. Sealing strips are connected to the inner wall of the main shell and the inner wall of the auxiliary shell in a bonding mode, a water drop sensor is installed on the front surface of the auxiliary shell, a conveying pump is installed on the top of a connecting plate, and a controller is installed on the other side of the main shell. By arranging the auxiliary mechanism, whether the prefabricated formwork deforms or not in the concrete pouring process of the prefabricated formwork can be monitored at any time, meanwhile, leaked concrete can be treated, loss can be stopped in time, the use effect of the ramp bridge small box girder prefabricated formwork is improved, and the construction cost is reduced. And meanwhile, the use efficiency of the prefabricated template for the small box girder of the ramp bridge is also improved.

The utility model discloses a kind of semitrailer tarpaulin devices, comprising: semitrailer floor, the top of the semitrailer floor is fixedly connected with vertical plate, the top of the vertical plate is fixedly connected with top plate, the top of the semitrailer floor is fixedly connected with the side of head baffle;Top shielding component, the top of the head baffle is fixedly connected with the side of top shielding component, side shielding component, the side of the vertical plate is fixedly connected with the side of side shielding component, the tail shielding component is used to adopt tarpaulin shielding to the tail of semitrailer, the utility model relates to tarpaulin device technical field.The semitrailer tarpaulin device, by the setting of top shielding component, by driving motor directly driving threaded block drives the rotation axis of far end to move outward, first tarpaulin is spread over the top of entire semitrailer, and first tarpaulin is carried by multiple rotation axes, can evenly share tarpaulin quality, avoid causing equipment overload in moving process.

The utility model relates to a casing pipe anti-abrasion device which comprises a casing pipe, a casing pipe anti-abrasion ring, a welding clamping sleeve, a first tight fit clamping hoop and a second tight fit clamping hoop, the first tight fit clamping hoop and the second tight fit clamping hoop which are detachable are arranged at the two ends of the casing pipe respectively, and the casing pipe anti-abrasion ring and the welding clamping sleeve are inserted in the middle of the casing pipe in a penetrating mode. The casing pipe anti-abrasion ring is made of hard alloy materials, the casing pipe anti-abrasion ring is in sliding fit with the casing pipe, friction between the casing pipes can be effectively prevented, abrasion of the casing pipes is reduced, the overall service life of the casing pipe anti-abrasion ring is prolonged, and the second tight fit clamp, the casing pipe, the first tight fit clamp and the casing pipe are connected in a sliding fit mode. The welding clamping sleeve matching part and the welding clamping sleeve matching part are in close fit, the sleeve can be fixed in the middle of the sleeve, the sleeve is prevented from being excessively abraded, the welding clamping sleeve is welded to the welding clamping sleeve matching part, and the sleeve anti-abrasion ring is tightly fixed to the sleeve.

The invention discloses a design and use method of a brain imaging movable base based on a miniaturized microscopic system, the miniaturized microscopic system is placed on a substrate, the center of the substrate is provided with a hole with the same size as a gradient index lens (GRIN lens), and the lens can extend out of the hole; the bottom surface of the substrate is provided with four magnets which are opposite to the four magnets on the bottom surface of the miniaturized microscopic system in magnetism and are used for ensuring uniformity and levelness during installation. The two sides of the substrate are provided with two fixing screws which are used for fixing the microscopic system. The base plate is connected with the axial displacement platform, and the axial position of the axial displacement platform is adjusted through a spring and a screw which are connected with the transverse displacement platform below the axial displacement platform. The transverse displacement table is placed on the hollow sliding rail, and the transverse position of the transverse displacement table is adjusted through a screw penetrating through the positioning hole and a spring connected with the top plate. The center of the axial displacement table and the center of the transverse displacement table are each provided with a hole allowing the GRIN lens to pass through. The hollow slide rail is provided with four bases which are fixed on the head of a test animal through glue. According to the scheme, fast and convenient imaging at different positions of the head of the same animal is achieved, and influences on test results and injuries to the animal caused by multiple operations and installation processes are avoided.

The high-precision clamping mechanism for cutting the aluminum guide rail comprises a bottom plate, an installation plate is fixedly installed on the outer wall of the top of the bottom plate, the two sides of the installation plate are each provided with a clamping assembly, and each clamping assembly comprises a bearing block fixedly connected with one side of the outer wall of the top of the installation plate; two first lead screws are rotationally connected to one side of the outer wall of the top of the mounting plate, the two first lead screws are sleeved with the same extrusion frame in a threaded mode, two symmetrically-arranged baffles are slidably connected into the extrusion frame, and the inner walls of the two ends of the extrusion frame are rotationally connected with the same two-way lead screw; the two ends of the bidirectional lead screw are sleeved with the two baffles in a threaded mode respectively, and two symmetrical containing grooves are formed in the outer wall of the top of the bearing block. By arranging the clamping assemblies, all directions of the two ends of the guide rail can be limited, and therefore it is guaranteed that the guide rail cannot deviate due to external force when machined; and the precision of cut finished products is improved.

The invention relates to the technical field of oil extraction well mouths, in particular to a combined oil extraction well mouth device which comprises a base, a shell is fixedly connected to the upper surface of the base, a plurality of positioning plates are fixedly connected to the lower surface of the base, and the positioning plates are evenly distributed. The device can be placed at a wellhead of an oil production well, can be tightly inserted into the outer surface of the wellhead of the oil production well by arranging a positioning plate and can be deeply inserted into soil, so that the effect of preventing the shell from loosening is achieved, a fixing groove is formed in the upper surface of the base, and a positioning mechanism is fixedly connected to the fixing groove formed in the upper surface of the base. The positioning mechanism comprises a track frame, the track frame is fixedly connected to a fixing groove formed in the upper surface of the base, and a sliding block is slidably connected to an inner cavity of the track frame. By arranging the base and the shell, the device can be placed at the wellhead of the producing well, and by arranging the positioning plate, the device can be tightly inserted into the outer surface of the wellhead of the producing well and deeply inserted into soil, so that the effect of preventing the shell from loosening is achieved.

The invention discloses a toilet stool and a sealing disc, and belongs to the field of sanitary ware. The sealing disc comprises a sealing piece and a sealing disc base, the sealing piece comprises a disc-shaped structure and a cylindrical structure, a circle of sealing lip is arranged on the periphery of the front end face of the sealing piece, the sealing piece comprises a circle or a group of fixing layers, a circle or a group of mounting grooves are formed between the fixing layers and the back face of the front end face of the sealing piece, and the lower bottom of the sealing disc base enters the mounting grooves to be combined into the sealing disc. The fixing layer and the sealing disc base comprise corresponding fixing holes, the fixing layer and the sealing disc base are fixed, the center of the lower bottom of the sealing disc base comprises a round hole, the back of the sealing piece comprises a set of protrusions, the back face of the front end face of the sealing piece of the sealing disc comprises a tearing line, and the sealing piece fixing layer of the sealing disc comprises a circle of cylindrical sleeve.

The invention provides a photovoltaic welding strip placing method which comprises the steps that S10, a traction clamping jaw in a welding strip traction assembly moves to a welding strip cutting assembly, a plurality of welding strips extending out of the edge of the welding strip cutting assembly are clamped and move by a certain distance in the direction away from the welding strip cutting assembly, and the welding strips are suspended and pulled out by a certain length; s20, the multiple welding strips are cut, multiple sub welding strips are obtained, and the ends, not cut, of the sub welding strips are still clamped by the traction clamping jaw; s30, pressing a part of the sub-welding strip on the battery piece by the first pressing head; s40, the clamping jaw is pulled to loosen the sub-welding strips, the second pressing head presses the other parts of the sub-welding strips on the battery piece, and therefore arrangement of the multiple sub-welding strips on the battery piece at a time is completed; wherein before the first pressure head presses a part of the sub welding strip on the battery piece, the welding strip is limited in the Y direction through the positioning piece. According to the method, a plurality of welding strips can be directly arranged on the to-be-arranged object, and the positioning precision of the welding strips arranged on the battery piece is improved.

The utility model belongs to the field of electric discharge machines, particularly relates to an electric discharge machine head clamping tool, and provides the following scheme aiming at the problem that the existing copper material is inconvenient to fix and take down: the electric discharge machine head clamping tool comprises an electric discharge machine head clamping ring; the clamping cylinder is in bolted connection with the bottom of the electric discharge machine head clamping ring; the inner cylinder is in bolted connection with the interior of the clamping cylinder; the movable ring is rotationally connected to the surface of the clamping cylinder in a sleeving manner; the number of the clamping assemblies is four, each clamping assembly comprises a small gear, a lead screw, a threaded cylinder, clamping plates and a stabilizing rod, the movable ring is meshed with the small gear, the axis of the small gear is in key connection with one end of the lead screw, the other end of the lead screw is in threaded connection with the interior of the threaded cylinder, and the four clamping plates are driven to move through the movable ring. The copper material in the inner barrel can be clamped and fixed, installation of the copper material is completed, and when the copper material needs to be taken down, the movable ring is rotated reversely, so that the four clamping plates can loosen the clamping state.

The present invention proposes a new procedure about a photolithographic method for forming a black pattern such as a black matrix. The present invention relates to a black resist composition suitable for this new process and excellent in light-blocking effect. The present invention relates to a black resist composition including a near-infrared-permeable black pigment (A), a sensitizing dye (B) having absorption in a near-infrared region, a radical polymerization initiator or acid generator (C), and a binder resin (D) as essential components. The black pigment (A) here used is preferably a lactam-based pigment, a perylene-based pigment, and / or an azomethine-based pigment, and a cyanine dye, a squarylium dye, and / or a phthalocyanine dye are / is contained as suitable sensitizing dye(s), together with the black pigment. The present invention relates to a novel photolithographic process of a black pattern with application of near-infrared light.

The utility model belongs to the technical field of chemical equipment, and particularly relates to a ventilation device for chemical safety, which solves the problems of poor ventilation effect and easiness in blockage of an air port in the prior art and comprises a bottom plate, a right concave wheel is rotatably mounted at the top of the bottom plate, and a left concave wheel is rotatably mounted on one side of the right concave wheel. The right concave wheel and the left concave wheel are covered with a belt, a first fixing block is installed on the belt, and a right duplex sliding block is fixedly connected to the upper portion of the first fixing block. Through arrangement of a motor, a first limiting rod and other structures, the device is driven by the motor, so that the right concave wheel and the left concave wheel rotate, and then the belt is driven to rotate; therefore, the ventilation effect of the ventilation device is achieved, the air bag in the hoop can be extruded and contracted along with movement of the device, the hoop can be tightly fixed to the ventilation device, and the ventilation effect is further improved.

The utility model belongs to the field of outer wall anti -infiltration, especially is outer wall heat preservation anti -infiltration structure, aiming at the existing because only rely on the heat preservation board to block heat preservation, not only the reliability is poor, and under the long time use, the whole structure solidity will greatly drop, and then reduce the firmness of heat preservation, and the waterproof plate's partition waterproof, not only is unfavorable to waterproof board installation fixed, and when meeting different positions and corners, can not be tightly installed, therefore will be in special scene, not reach the waterproof purpose problem, present and propose following scheme, including base wall, the one side of base wall is provided with heat preservation board, the side surface of base wall close to heat preservation board is provided with first waterproof layer. The utility model is in use, can make heat preservation system when facing temperature change, wind power and so on external factor more stable, also further enhanced the excellent waterproof performance and weather resistance of wall, is favorable to the dead angle of reaching waterproof purpose.

The invention discloses a rotary welding device for mechanical manufacturing, and relates to the technical field of mechanical manufacturing, the rotary welding device comprises a welding mechanism, an auxiliary mechanism is arranged on the welding mechanism, the auxiliary mechanism comprises two first transparent plates, an L-shaped hole, a first cylindrical hole, a rectangular hole and a second cylindrical hole, and a coil pipe is arranged in a treatment box. A plurality of filter screen plates are slidably embedded in the top of the U-shaped frame at equal intervals, a fan is installed at the bottom of the inner wall of the treatment box, and a sealing ring is connected to the interior of a third cylindrical hole in an adhesive mode. According to the rotary welding device, by arranging the auxiliary mechanism, harmful substances generated during welding of the two round pipe parts can be treated, meanwhile, the welding position between the two welded round pipe parts can be rapidly and timely cooled, then workers, the environment and the round pipe parts are protected, the using effect of the rotary welding device is improved, and the working efficiency of the rotary welding device is improved. And meanwhile, the use efficiency of the rotary welding device is also improved.

The utility model relates to the technical field of sports bracelets and discloses a novel sports bracelet which comprises a bracelet body, two connecting belts are arranged on the bracelet body, a plurality of first friction strips are arranged on the surface of one connecting belt, a connecting part is arranged at one end of the other connecting belt, and a plurality of second friction strips are arranged at the other end of the other connecting belt. The connecting part is provided with a connecting assembly and a locking assembly. According to the utility model, the combination of the connecting band and the connecting part is adopted, and the precise adjustment of the girth diameter is realized through the matching of the sliding part and the pressing block, so that a user can precisely adjust the tightness of the bracelet according to the size of the wrist of the user, and the optimal wearing comfort is obtained.

The invention discloses a fixing device for a ro-ro passenger ship vehicle, and relates to the technical field of ro-ro passenger ships, the fixing device comprises a frame body and a panel fixedly connected to the upper surface of the frame body, the frame body is used for positioning the device in the ro-ro passenger ship, when the fixing device is used, a groove is formed in the surface of the ro-ro passenger ship, the frame body is arranged in the groove body, and only the panel is exposed out of a ship body; the extrusion device is arranged, after the riding tires move to the upper surface of the panel, the extrusion device starts to work, so that the extrusion device enables the blocking device to protrude out of the panel, the automobile tires on the upper surface of the panel are blocked, and the effect that the blocking device protrudes out of the panel is achieved; the extrusion device is provided with a mechanism with a hydraulic function, a connecting frame fixedly connected to the outer surface of the extrusion device and a blocking device slidably connected to an inner cavity of the extrusion device, and the effect that an automobile is tightly connected with the ro-ro passenger ship together in the stormy wave environment is achieved.

The utility model discloses a nozzle with low thermal conductivity and thermal shock resistance, which comprises a bowl opening, a first connecting section is arranged at the lower end of the bowl opening, a slag line section is arranged at the lower end of the first connecting section, a second connecting section is arranged at the lower end of the slag line section, and thermal insulation ceramics are arranged on the outer walls of the first connecting section, the second connecting section and the slag line section. Two arc-shaped blocks are arranged on the outer side of each of the three heat insulation ceramics, and every two matched arc-shaped blocks are connected through a locking assembly. According to the nozzle, the first iron shell, the second iron shell and the bowl opening can be preliminarily fixed through the arrangement of the clamping blocks on the multiple fixing columns, the iron shell assemblies and the bowl opening can be better adhered together through fire clay, long-time hand holding is not needed, heat exchange between molten steel and the outside can be effectively reduced through the arrangement of heat insulation ceramic, and the service life of the nozzle is prolonged. The generation of carbon slag and steel slag in the molten steel is further reduced.

The utility model discloses a portable sound box, which comprises a sound box rear shell, an auxiliary loudspeaker and a sealing ring, a sound box front shell is arranged on one side of the sound box rear shell, and a main loudspeaker is arranged in the sound box front shell; the auxiliary loudspeaker is arranged on the surface of the sound box front shell and located above the main loudspeaker. The sealing ring is sleeved on the surface of the main loudspeaker, and the sealing ring is connected to the inner side of the sound box front shell; according to the utility model, the fixing bolt passes through the first positioning column and then enters the second positioning column, so that the sound box front shell is tightly fixed on the side edge of the sound box rear shell; the main loudspeaker and the auxiliary loudspeaker can be protected through the protective shell, the main loudspeaker and the auxiliary loudspeaker are prevented from being damaged by external objects, and the service life of the main loudspeaker and the service life of the auxiliary loudspeaker are further prolonged. And as the volume of the sound equipment is small, the operator can hold the handle with the hand to carry the sound equipment to a specified position through the handle, so that the sound equipment is convenient to carry.