32results about How to "Tight and stable" patented technology

The invention relates to an adjustment device. The adjustment device for the projector disclosed by the invention is installed on the wall and comprises a telescopic rod; the wall is provided with a chute; a sliding block is connected inside the chute in a sliding manner; the telescopic rod is fixedly connected to the sliding block; a support plate is connected between two side walls of the chute in a sliding manner; the telescopic rod passes through the support plate and is in gap cooperation with the support plate; the lower side of the support plate is connected to a connection rod in a sliding manner; the connection rod is fixedly connected to a first wedge block; a second wedge block is abutted against the first wedge block; and the second wedge block passes through the support plate and is connected to the support plate through a sliding manner. Compared with the prior art, the projector can show an image with better color matching through the right-left movement of the sliding block.

The invention relates to the technical field of temporary buildings, and particularly relates to a high-stability temporary building convenient to disassemble. The high-stability temporary building convenient to disassemble comprises a prefabricated plate and a connecting plate, and further comprises a wood springboard, a steel frame mechanism, a clamping and fixing mechanism and a top lap joint mechanism, wherein the connecting plate is connected to one side of the prefabricated plate in a clamped mode; the wood springboard is arranged at the tops of the prefabricated plate and the connectingplate in a lap joint mode; the steel frame mechanism is arranged at the top of the wood springboard and fixedly connected with the wood springboard through bolts; and the clamping and fixing mechanism comprises an adjusting rotating handle and two sets of rotating assemblies. According to the high-stability temporary building convenient to disassemble, through clamping fit between the prefabricated plate and the connecting plate, the prefabricated plate and the connecting plate are tightly connected through the clamping and fixing mechanism between the connecting plate and the specially-madewood springboard, a carrier is provided for a partition plate and the like used in the later period through the top lap joint mechanism, the two sets of clamping assemblies at the top are convenient to install and lay, assembling is convenient, the performance is stable, the assembling and disassembling efficiency of the temporary building is greatly improved, and the stability is improved.

The invention discloses a motor for a deep-well pump, and relates to the field of deep-well pumps. The motor comprises a machine cylinder, a front end cover and a rear end cover, wherein a machine shaft is rotationally connected in the machine cylinder, and a mounting cylinder is arranged on the outer side wall of the rear end cover; a mounting tube is arranged in the mounting cylinder, and a mounting plate is arranged on the upper end face of the mounting tube; a balance plate is arranged on the mounting plate, and a plurality of balance grooves are formed in the balance plate; a balance block is embedded in each balance groove; a pressing plate is arranged on the upper end face of the balance block, and the lower end surface of the balance block is provided with a balance ball which abuts against the bottom wall of the corresponding balance groove; and the outer wall of the rear end of the machine shaft is sleeved with a graphite sleeve used for abutting against the upper end face ofthe pressing plate. The motor has the following advantages and effects that: when the machine shaft is stressed, the balance degree of the pressing plate is automatically adjusted through the shakingof the balance block and the balance ball, so that the graphite sleeve can stably abut against the upper end surface of the pressing plate; and the machine shaft is always fixed and rotated at the same position, so that the phenomenon of shaking of the machine shaft is avoided, and the effect of high stability is achieved.

The invention discloses an auxiliary device for a milling machine. The device comprises a column, a balancing weight, a boring box, a connection rope and a pulley base with pulleys, the connection rope penetrates through the pulleys and is fixedly connected with the balancing weight and the boring box separately, the boring box is driven to move up and down by a motor, the column is hollow, and guide rails are arranged on the two opposite inner side walls of the column; a hoisting block which can move up and down is connected to the top of the balancing weight and connected with the connectionrope, guide grooves which are matched with the guide rails are formed in the outer side wall of the balancing weight, and braking mechanisms are arranged in the guide grooves; a transmission mechanism which is connected with the braking mechanisms is arranged on the balancing weight at the outer side of the hoisting block. According to the scheme, after the connection rope is fractured and the hoisting block falls down, the braking mechanisms can be driven to abut against the guide rails to brake the balancing weight, and the problem can be effectively avoided that the balancing weight fallsdown and the milling machine is damaged.

The invention relates to an adjusting device, and discloses an ejecting device for a projector. The ejecting device is arranged on a wall and comprises a telescopic rod. A sliding groove is formed in the wall. A sliding block is connected with the sliding groove in a sliding manner. The telescopic rod is fixedly connected to the sliding block. A supporting plate and a bottom plate located below the supporting plate are connected between the two side walls of the sliding groove in a sliding manner. The telescopic rod penetrates the supporting plate and the bottom plate and is in clearance fit with the supporting plate and the bottom plate. Ejector blocks penetrating the supporting plate are arranged on the supporting plate. A shear fork type lifter is arranged below the ejector blocks in an abutting manner and fixedly connected to the bottom plate. Compared with the prior art, images formed by the projector can be more coordinated through left and right movement of the sliding block.

The invention discloses a computer external memory with high connection stability, which comprises a mobile hard disk, a plug is electrically connected to a socket on the left side of the outer wall of the mobile hard disk, the outer wall of a sliding sleeve is in clearance fit with the inner wall of a second through groove, and a first vertical rod is fixedly connected to the bottom of the outer wall of the sliding sleeve. An arc-shaped elastic piece is fixedly connected to the bottom of the outer wall of the first vertical rod, the inner wall of the arc-shaped elastic piece is attached to the outer wall of the wire, and the right side of the outer wall of the arc-shaped elastic piece is attached to the left side of the outer wall of the plug. According to the external memory with high connection stability for the computer, when a plug drives a wire to be connected with a mobile hard disk, the wire can be guided by a first grooved wheel and a second grooved wheel, the situation that the connection stability of the plug and a mobile hard disk jack is affected by the dead weight of the wire is avoided, and through elastic deformation of a second spring, the block body drives the first groove wheel to make contact with the wire, the wire makes contact with the second groove wheel, and the wire can be attached to the first groove wheel and the second groove wheel conveniently.

The invention provides a bevel guiding-groove honeycomb-hole manhole cover, belongs to the technical field of underground pipe network facilities for urban construction, and mainly solves the following problems caused by defects in the structural design of a conventional manhole cover: 1, during the heavy rain or the rapid rain, the drainage capacity of the conventional manhole cover is poor, water gathers and floods the road surface, and the traffic paralysis occurs; and 2, noise is generated when the conventional manhole cover is lost, shifted, turned over and impacted, the vibration structure is fatigued, and the conventional manhole cover is difficult to open. According to the bevel guiding-groove honeycomb-hole manhole cover provided by the invention, the matching mode between a manhole cover body and a manhole is designed as the bevel matching mode, thereby eliminating the clearance and the displacement between the manhole cover body and the manhole; besides, a forked lock being integrated with the manhole cover body is added, thereby thoroughly solving the problems that noise is generated when the conventional manhole cover is lost, shifted, turned over and impacted, the vibration structure is fatigued, and the conventional manhole cover is difficult to open; and meanwhile, flow guiding grooves are designed on the inner side of the bevel manhole, and honeycomb through holes are designed on the obverse side of the manhole cover body, thereby greatly alleviating or thoroughly solving the problem that water gathers and floods the road surface. The bevel guiding-groove honeycomb-hole manhole cover is mainly applied to rain collecting manholes and drainage manholes in all national cities, especially the southern cities with lots of rain.

The invention relates to the technical field of temporary buildings, in particular to a method for assembling a highly stable and easily dismantled temporary building, comprising a prefabricated board and a connecting board, as well as a wooden springboard, a steel frame mechanism, a clamping and fixing mechanism and a top lap joint mechanism. The connecting plate is clamped on one side of the prefabricated plate, the wooden springboard is overlapped and arranged on the top of the prefabricated plate and the connecting plate, and the steel frame mechanism is arranged on the top of the wooden springboard and is fixedly connected with the wooden springboard by bolts. The clamping and fixing mechanism includes an adjusting handle and two sets of rotating components. In the present invention, the prefabricated plate and the connecting plate are tightly connected by the clamping and fixing mechanism between the connecting plate and the special wooden springboard through the snap-fit ​​between the prefabricated plate and the connecting plate. The top lap joint mechanism is used to ensure that the partition boards used later are provided as carriers. The two sets of snap-connected components on the top are easy to install and lay, easy to assemble and stable in performance, which greatly improves the assembly and disassembly efficiency of temporary buildings and improves the stability.

The invention relates to the technical field of subway power supply system research, and discloses a subway power supply system bilateral inter-tripping function research line protection device whichcomprises a lower protection shell. The top of the lower protection shell is rotatably connected with an upper protection shell, and the upper protection shell is rotatably connected with the top of the lower protection shell through a hinge. Air holes are formed in the front side of the upper protection shell, and moving grooves are formed in the left sides and the right sides of the lower protection shell and the upper protection shell. According to the subway power supply system bilateral inter-tripping function research line protection device, a clamping block slides into a clamping grooveto realize fixation of a sliding block so that a clamping plate fixedly supports a flat-head power plug line, and meanwhile, the clamping plate can fixedly support the flat-head power plug lines withdifferent heights through up-down movement of the sliding block; and the situation that the power lines are intertwined together is reduced so that researchers can know the power plug of each line more clearly.

The invention belongs to the technical field of diesel engine maintenance at nuclear power stations, and discloses an oil inlet and return pipe maintenance tool and method for a diesel engine body ata nuclear power station. The oil inlet and return pipe maintenance tool comprises a clamping device and a jacking device, wherein the clamping device comprises a clamping pipe, a sleeve, a clamping screw and a clamping piece; the jacking device comprises a nut, a bolt and a bottom support; the clamping pipe is fixedly connected with the sleeve; a through hole is formed in the clamping pipe and inthreaded connection with the clamping screw; the end, close to the clamping pipe, of the clamping screw is fixedly connected with the clamping piece; the bottom of the bolt is fixedly connected with the bottom support; the nut matched with the bolt sleeves the bolt; and the bolt is inserted into the sleeve and connected with the sleeve in a matching manner. The oil inlet and return pipe maintenance tool is simple in structure and small in size, can adapt to onsite narrow maintenance space, and has rapid positioning and jacking functions; the uniform stress of an entire oil inlet and return pipe assembly can be guaranteed; the deformation of an oil inlet and return pipe as well as the sealing surface and thread damage can be avoided; the labor cost can be effectively reduced; the risk caused by human errors can be reduced; and the maintenance operation on the oil inlet and return pipe can be safely and efficiently performed.

The invention relates to the technical field of temporary buildings, in particular to a highly stable and easily disassembled temporary building, which includes prefabricated boards and connecting boards, and also includes wooden springboards, steel frame mechanisms, clamping and fixing mechanisms and top lapping mechanisms. The connecting boards Clamped on one side of the prefabricated board, the wooden springboard is overlapped and arranged on the top of the prefabricated board and the connecting board, the steel frame mechanism is arranged on the top of the wooden springboard and connected with the wooden springboard by bolts, and the clamping and fixing The mechanism includes adjusting handles and two sets of rotating components. The present invention makes the prefabricated panels and the connecting panels tightly connected through the clamping and fixing mechanism between the connecting panels and the special wooden springboard through the clamping fit between the prefabricated panels and the connecting panels. The connection mechanism guarantees the carrier for the partition board used in the later period. The top two sets of clamping components are easy to install and lay, easy to assemble, and stable in performance, which greatly improves the efficiency of assembly and disassembly of temporary buildings and improves the stability.

The invention relates to a box opening and sealing device for an express package. The device comprises a box body and a supporting assembly, wherein a base is glidingly connected into a box opening groove; a blanking hole applicable to falling down of an object in the express package is formed in the base; a cutter rack is fixed to the sidewall of one side in the sliding direction of the base through a connecting block; a transverse cutter and a longitudinal cutter encircles to form C shape; a pushing rod is used for pushing the base to drive the transverse cutter and the longitudinal cutter to cut a quadrate opening in the bottom part of the express package; a sliding rod is glidingly connected into a box sealing groove; the upper end of the sliding rod is fixed to one of the ends of propping rods through a propping spring, and the other one of the ends of the propping rods is propped to the sidewall of the express package; the pushing rod can be raised to trigger a triggering ring body, and thus the sliding rod is capable of synchronously driving each propping rod to move to be above the express package through the triggering ring body; the propping spring springs back to drive the corresponding propping rod to prop a box cover of the express package, and then the box cover is manually glued to finish box sealing. Therefore, the problems of difficulty in unloading after manually cutting the bottom part of the express package and difficulty in box sealing can be solved.

The invention discloses a nano zinc oxide loaded composite material preparation device which comprises a rack, a preparation box body is fixedly installed on the surface of one side of the rack, a material box is fixedly installed on the surface of one side of the preparation box body, a hollow rod is rotatably installed on the side face of the material box, and a stirring rod is fixedly connected to the surface of the hollow rod. A rotating disc is fixedly connected to the surface of one end of the hollow rod, a cavity is formed in the rotating disc, blowing holes are formed in the surface of one side of the cavity, a sealing plate is slidably mounted on the surface of the other side of the cavity, a connecting rod is fixedly connected to the surface of one side of the sealing plate, and a sealing head is fixedly connected to the surface of one end of the connecting rod; and the surface of the sealing head is slidably connected to the side face of an air blowing hole, and a feeding pipe is fixedly installed on the surface of one side of the material box, so that the use convenience and stability can be greatly improved, and the high efficiency and uniformity of preparation are guaranteed.