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35results about How to "Prevent sliding displacement" patented technology

Mechanical sealing device with adjustable local film thickness between sealing end faces

The invention provides a mechanical sealing device with the adjustable local film thickness between sealing end faces. The mechanical sealing device comprises a positioning ring, a movable ring, a movable ring seat, a fixed ring, a fixed ring seat and a sealing end cover. The fixed ring is compacted on the fixed ring seat through the positioning ring, the end face of the movable ring and the end face of the fixed ring axially cooperate, the movable ring is mounted on the movable ring seat and rotates along with a shaft, and a pushing spring is arranged between the movable ring and the movablering seat. The fixed ring is mounted on the fixed ring seat, and the fixed ring seat is mounted on the sealing end cover. An oil storage cavity is formed in the fixed ring, the oil storage cavity is ablind hole opened to the back face of the fixed ring, and the top end of the oil storage cavity is close to the end face of the fixed ring. A piston cavity is formed in the fixed ring seat, the piston cavity is a blind hole opened to the attached face of the fixed ring seat and the fixed ring, and the piston cavity and the oil storage cavity are butted to form a uniform cavity parallel to the axial direction. A double-head piston is arranged in the uniform cavity, one end of the double-head piston is located in the oil storage cavity, the other end of the double-head piston is located in thepiston cavity, the double-head piston moves in the axial direction of the uniform cavity in order to change the pressure in the oil storage cavity, and the piston cavity communicates with a pressure regulating valve through an air inflow passageway penetrating through the fixed ring seat and the sealing end cover in order to adjust the pressure in the piston cavity.
Owner:ZHEJIANG UNIV OF TECH

Circuit board drilling positioning device

The invention discloses a circuit board drilling positioning device. The circuit board drilling positioning device comprises a bottom plate, wherein a placement table is fixedly connected to the rightside of the top of the bottom plate; a side plate is fixedly connected to the rear end of the right side of the top of the bottom plate; and a top plate is fixedly connected to the top of the side plate. According to the circuit board drilling positioning device, a fixed plate, a first threaded rod, a nut, a pull plate, an adjusting clamping plate, a first limiting block, a box body, a stepping motor, a second threaded rod, a threaded block, a movable plate, a push rod, a movable clamping plate, a second limiting block, a sliding groove, a sliding block, a bearing and a buffer pad are arranged and cooperate with one another, so that the advantage of good positioning effect on a circuit board is achieved, when the circuit board is drilled and positioned, the circuit board can be effectively clamped and fixed, the sliding displacement of the circuit board is prevented, meanwhile, the drilling damage of the circuit board is prevented, meanwhile, adjustment can be carried out according tothe size of the circuit board, the defective products of the circuit board are reduced, and the production cost of a factory is reduced.
Owner:深圳市华丰泽电子有限公司

Waterproof-drainage, moistureproof and fireproof cable trench system for tunnel

ActiveCN108199332AProtect the overall structureExtend service cycleCable installations in tunnelsWater block
The invention discloses a waterproof-drainage, moistureproof and fireproof cable trench system for a tunnel. The waterproof-drainage, moistureproof and fireproof cable trench system comprises a waterproof cover plate module of a cable trench arranged at the top of the cable trench, a cable trench water monitoring module arranged in the cable trench, and a waterproof wall structure module of the cable trench, wherein the waterproof wall structure module of the cable trench is provided with a cable moistureproof module, wherein the waterproof cover plate module of the cable trench comprises a plurality of waterproof cover plates of the cable trench, anti-skid stop blocks of the waterproof cover plates and waterproof cover plate water-blocking strips; the plurality of waterproof cover platesof the cable trench are obliquely arranged at the top of the cable trench; the anti-skid stop blocks of the waterproof cover plates are arranged at the bottoms of the waterproof cover plates separately; and one waterproof cover plate water-blocking strip is arranged at the joint between two adjacent waterproof cover plates of the cable trench. According to the waterproof-drainage, moistureproof and fireproof cable trench system for the tunnel, underground water can be effectively prevented from affecting normal working of a cable pipe in the cable trench, the overall structure of a cable and the cable trench is effectively protected and the service period of the cable trench is prolonged.
Owner:CHANGAN UNIV

Formwork supporting structure for reserved hole roof cover construction

The invention discloses a formwork supporting structure for reserved hole roof cover construction. The structure comprises a plurality of layers of reserved holes. Fixed type steel beams are arranged at the two opposite side edges of an opening of the reserved hole in the top layer, a plurality of uniformly-distributed secondary beams are fixedly arranged between the two side steel beams, the two ends of the secondary beams are fixed to the two side steel beams, supporting scaffolds are erected on the two side steel beams, and bases of the supporting scaffolds are arranged on the two side steel beams respectively; two supporting beams below a board are arranged on the tops of the supporting scaffolds, the two supporting beams below the board are right opposite to the two steel beams, a plurality of uniformly-distributed secondary beams below the board are fixedly arranged between the two supporting beams below the board, and the two ends of the secondary beams below the board are arranged on the two supporting beams below the board respectively; a formwork is arranged above the supporting beams below the board and the secondary beams below the board. According to the formwork supporting structure, the problem that in the prior art, during reserved hole roof cover casting construction, potential safety hazards exist when a floor type formwork support is arranged is solved, and the purposes of lowering potential safety hazards while supporting is provided for reserved hole roof cover cast-in-place are achieved.
Owner:CHINA MCC5 GROUP CORP

Supportless construction method for cast-in-place floor of high-rise steel structure house

The invention relates to the field of template construction, in particular to a supportless construction method for a cast-in-place floor of a high-rise steel structure house. The supportless construction method for the cast-in-place floor of the high-rise steel structure house comprises the steps that a load on a supportless template is calculated according to the condition of an actual high-rise steel structure, and steel tubes and support rods are selected; multiple steel tubes are fixed between a pair of steel beams which are arranged in parallel through locking devices. Each steel tube and a pair of steel beams are vertically arranged. The locking devices are a pair of locking devices. The pair of locking devices clamp one ends of the steel tubes in the middle and limit one ends of the steel tubes in installing spaces of the steel beams. Multiple support rods are fixed above the multiple steel tubes. Two ends of each support rod are fixed in the installing space that a pair of steel beams and the other pair of steel beams are vertically arranged. A bottom die template is arranged above the multiple support rods and is fixed with two pairs of steel beams simultaneously. The supportless construction method for the cast-in-place floor of the high-rise steel structure house has the advantages that the construction period is shortened, safety hazards caused by template collapse due to instability of a scaffold are eradiated completely, at the same time, the construction cost is saved, and the construction quality is guaranteed.
Owner:DAYUAN CONSTR GRP

Hoisting machinery suitable for strip-shaped building material and provided with anti-falling mechanism and application method for hoisting machinery

The invention provides hoisting machinery suitable for a strip-shaped building material and provided with an anti-falling mechanism and an application method for the hoisting machinery, and relates to the technical field of building material hoisting transportation. The hoisting machinery comprises connecting rods and a movable hoisting cylinder, the six connecting rods are arranged, the right ends of the connecting rods are connected to a right hoisting cylinder and a limiting hoop correspondingly, the left ends of the connecting rods are connected to a left hoisting cylinder and a locking plate correspondingly, the limiting hoop is composed of two parts, the bottom ends of the two parts of the limiting hoop are connected with each other in a rotating mode, the top ends of the two parts of the limiting hoop are fixedly connected through a fastening bolt, the movable hoisting cylinder is connected to the outer sides of the connecting rods, and two pulleys are connected to the top of the movable hoisting cylinder in a rotating mode and are connected to a steel wire hoisting rope. The hoisting machinery and the application method thereof have the advantages that according to the length of the strip-shaped building material, the left hoisting cylinder at the left ends of the connecting rods is adjusted in a sliding mode, the spacing distance between the right hoisting cylinder and the left hoisting cylinder is changed, the left end and the right end of the strip-shaped building material are located in the right hoisting cylinder and the left hoisting cylinder correspondingly, and the falling risk of the strip-shaped building material is prevented.
Owner:刘亮

Cutting tool for small hollow pipe with band sawing machine and using method thereof

PendingCN109663976APrevent bouncing and bouncingSimple structureMetal sawing devicesEngineeringHole size
The invention provides a cutting tool for small hollow pipe with a band sawing machine and a using method thereof. The cutting tool comprises a sliding block; two limiting plates are in semi-circularplate structures and separately welded on a left pressing plate and the bottom side face of a right pressing plate; a connecting rod is composed of two vertical pipes, a first horizontal pipe and a second horizontal pipe; the two vertical pipes are separately welded on the left pressing plate and the top side face of the pressing plate; the first horizontal pipe is welded on the top end of the right side face of the vertical pipe at the left end; the second horizontal pipe is welded on the top end of the left side face of the vertical pipe at the right end; the excircle size is equal to the inner hole size of the first horizontal pipe and can slide left and right in the first horizontal pipe. The cutting tool is simple in structure, easy to process and manufacture; the function of assisting in fixing when in cutting blanking pipes is achieved; both ends of the blanking pipes can be applied with pressure, so that the pipes are prevented from upspring and bouncing after blanking, the pressure applied is small and no need to be specially adjusted, thus the operation is simple and easy, and the range of application is wide.
Owner:GUIZHOU UNIV

Power distribution network prediction auxiliary device and prediction state estimation method thereof

The invention provides a power distribution network prediction auxiliary device and a prediction state estimation method thereof. The device comprises a box body, wherein a controller is in bolting connection with the front face of the left side of the top of the box body, a host is in bolting connection with the back face of the left side of the top of the box body, supporting columns are in bolting connection with the periphery of the top of the box body, and a detection table is in bolting connection with the tops of the supporting columns; a keyboard is placed on the front side of the left side of the top of the detection table, a display is bolted to the back side of the left side of the top of the detection table, and connecting wires are sequentially inserted into the bottom of the right side of the display from top to bottom. Through cooperation of a through groove, a servo motor, a rotating rod, a driving gear, a driven gear, a lead screw, a threaded sleeve, a moving seat and universal wheels, the box body can be moved and fixed in a standing mode according to actual requirements of a user on site; therefore, the user can conveniently and rapidly conduct prediction operation on power distribution network equipment, the prediction efficiency of a power distribution network is improved, and long-time work waiting of the power distribution network is avoided.
Owner:INST OF ECONOMIC & TECH STATE GRID HEBEI ELECTRIC POWER +2

Three-dimensional auxiliary puncture positioning frame for lower brain nidi and positioning method thereof

The invention discloses a three-dimensional auxiliary puncture positioning frame for lower brain nidi and a positioning method thereof and belong to the field of medical instruments. The positioning frame comprises a sliding ruler, a handle is arranged at one end of the sliding ruler, a fixed clamp perpendicular to the sliding ruler is integrally arranged at the opposite end of the sliding ruler,a sliding clamp is slidably arranged on the opposite side of the fixed clamp on the sliding ruler, puncture positioning fixing pieces with opposite axes are arranged at the ends of the fixed clamp andthe sliding clamp respectively, the puncture positioning fixing pieces on the fixed clamp and the sliding clamp are arc-shaped grooves, a positioning needle is arranged in the arc-shaped groove in the fixed clamp in a matched mode, a positioning ruler and an adapter are arranged in the arc-shaped groove in the sliding clamp in a matched mode, and a center positioning opening and a plurality of auxiliary positioning holes are formed in the positioning ruler. According to the puncture positioning frame, equipment investment can be reduced, a guide plate is prevented from being printed, the operation preparation time can be shortened, after accurate positioning and orientation, a rescue operation is conducted in time, function loss of a patient can be reduced, and the life of the patient issaved.
Owner:杨利民

Automatic screening mechanism and spraying device thereof

The invention relates to the technical field of CNC machining screening, and discloses an automatic screening mechanism and a spraying device thereof. The automatic screening mechanism comprise a baseand a screening channel, wherein the surface of the screening channel is provided with a screen cloth; the left side of a base plate is provided with a fixing baffle, and the right side of the base plate is provided with two clamping rings; the inner walls of the two clamping rings are each movably connected with a connecting rod; and the intersection of the two connecting rods is movably connected with a hollow pipe; a sliding groove is formed in the surface of the hollow pipe; and a spring is installed in the hollow pipe; and the two ends of the spring are each connected with the connectingrod. By extending the two connecting rods to the inside of the two clamping rings for fixing, the screen cloth is extruded by the connecting rods to be fixed to the surface of the base plate, and when the screen cloth needs to be replaced, two sliding blocks slide towards the middle of the hollow pipe to drive the two connecting rods to slide out of the inside of the clamping rings, so that the effect of quick disassembly, assembly and replacement of the screen cloth is achieved.
Owner:DONGGUAN SHENGXIANG PRECISION METAL

Wire control device and manufacturing method of shell assembly thereof

The invention discloses a wire control device. The wire control device comprises a shell assembly and a wire control circuit board, wherein the shell assembly is internally provided with an electrical apparatus element cavity; the wire control circuit board is arranged inside the electrical apparatus element cavity; a wire passing opening for communicating the electrical apparatus element cavity and the outside is formed in the shell assembly; an amphenol connector is arranged on the wire control circuit board; the shell assembly comprises a shell and an end cover, the shell comprises a first shell and a second shell which are spliced relatively, the end cover comprises a first end cover and a second end cover, and after the first shell and the second shell are spliced, two ends of the first shell and two ends of the second shell are fixed through the first end cover and the second end cover. The invention also provides a manufacturing method of the shell assembly. Compared with the prior art, after the first shell and the second shell designed in the invention are spliced, two ends of the first shell and two ends of the second shell are connected through the first end cover and the second end cover, the shell assembly is simple in structure and convenient to mount and dismount, and after-sales repair is facilitated; and due to the fact that the connecting structures of the shell are arranged at two ends, the modeling space of the outer surface is larger.
Owner:中山市信轩堂文化产业投资有限公司

High-applicability mounting device applied to underground electromechanical equipment

The invention discloses a high-applicability mounting device applied to underground electromechanical equipment, and particularly relates to the technical field of underground electromechanical equipment.The high-applicability mounting device comprises a supporting frame and four movable seats, and the bottom of the outer surface of the supporting frame is fixedly connected with the top of the outer surface of an anti-skid bottom plate; four bottom horizontal adjusting assemblies are arranged on the outer surface of the anti-skid bottom plate. The bottom horizontal adjusting assembly is arranged, the telescopic plate can achieve the telescopic purpose in the rectangular cylinder, then the position of the mounting plate can be adjusted according to the concave-convex condition of the ground, and it is guaranteed that the mounting plate is located on the same horizontal plane; and meanwhile, in the installation process, the clamping plates can be clamped into the positioning grooves through air pressure control by pressing the annular air bags flat, then the position positioning of the telescopic plates can be achieved, the purpose of horizontal adjustment can be achieved according to the actual situation requirement, deflection is avoided, and therefore the stability of subsequent electromechanical equipment installation is facilitated.
Owner:六安科亚信息科技有限公司

Noise-proof device for green building construction

The invention relates to the technical field of sound insulation devices, in particular to a noise prevention device for green building construction, which comprises a shell, a mounting frame and a noise reduction plate, an adjusting assembly is arranged on the mounting frame and comprises a first adjusting push plate, a second adjusting push plate, a third adjusting push plate and a pushing block. The noise reduction plate moves downwards through the elastic force of the first elastic piece, then the cover plate extrudes the noise reduction plate to enable the noise reduction plate and the first elastic piece to move downwards so that the noise reduction plate of different heights can be conveniently arranged, the noise reduction plate can be directly pushed up to be conveniently replaced when the cover plate is opened, and the cover plate pushes the noise reduction plate to move downwards; and meanwhile, two second adjusting push plates are pushed through two second elastic pieces to abut against the left end and the right end of the noise reduction plate to control the width of the noise reduction plate and position the noise reduction plate, finally, pushing blocks are moved to enable two second pushing plates to push the noise reduction plate in the two mounting stations, and therefore the thickness of the noise reduction plate is controlled.
Owner:中建广厦(福建)建设有限公司
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