142results about How to "Reduce installation risk" patented technology

The invention relates to a fixture device of a deepwater floating platform rib anchor chain sensor. The device is characterized by comprising a T-shaped fixture body, self-locking devices and a sensor bearing cylinder; three ends of the T-shaped fixture body are respectively provided with one self-locking device; and the sensor bearing cylinder is horizontally fixed on the wing plate of the T-shaped fixture body. The device disclosed by the invention is not only used for effectively preventing the installed sensor from sliding along a chain ring but also used for preventing the sensor from rotating relative to the chain ring and ensuring the good in-place working state of the sensor. Simultaneously, a diver serves as an installation carrier; the diver can sufficiently play subjective initiative; more complex works can be completed; and installation risks resulted from reasons, such as improper operation, ocean current disturbance and the like, can be reduced.

The invention relates to a method for arranging a hoisting point and a floating-supported conduit frame with skirt pile sleeves. The floating-supported conduit frame comprises a conduit frame main body, wherein the bottom of the conduit frame main body is provided with an underwater framework, a plurality of horizontal layers are arranged on the underwater framework, and a plurality of water-isolating sleeve guides are arranged on the horizontal layers; both sides of the underwater framework are provided with a plurality of main upright leg pipe columns, and ice cones are arranged on the main upright leg pipe columns; and a skirt pile sleeves are arranged on the plane of the conduit frame main body beyond the four corners, and the skirt pile sleeves are connected with the main upright leg pipe columns into a whole through a plurality of support rods to form an open type straight leg conduit frame structure with the skirt pile sleeves. The hoisting points are arranged on the top of the skirt pile sleeves. The method structurally increases the loading capacity of the supporting conduit frame, and the conduit frame is applicable to loading larger upper blocks; the penetration depth of piles driven into the bottom of the sea and pile driving refusal risk caused by marine pile driving work can be reduced, and hoisting can not be influenced by well mouth guides and the ice cones arranged on conduit frame pile legs; and the marine installation process of the conduit frame is furthest simplified, and marine installation cost and risk are also reduced.

The invention provides an assembly tool for a low-pressure turbine of an engine. The assembly tool comprises a positioning guide tool and a traction tool, and the positioning guide tool is coaxially connected with a low-pressure turbine shaft. According to the assembly tool, in the assembly process, the traction shaft sequentially penetrates through a core machine, a traction shaft sleeve and a connecting shaft sleeve and extends to the outside of a fan rotor; in the assembly process of the low-pressure turbine, the torsion is applied to the traction shaft from the outside, the traction shaftand the connecting shaft sleeve synchronously rotate, the fan rotor drives the traction shaft to axially move through threads in the rotating process, and then the low-pressure turbine shaft has dualacting force of rotation and axial movement, and a bearing cylindrical roller on the low-pressure turbine shaft is gradually assembled into a bearing outer ring in the rotating process, so that the problem that a cylindrical roller mechanically collides with a bearing outer ring in the existing assembly process is solved.

The utility model discloses an air conditioner external unit bracket. The air conditioner external unit bracket comprises two fixing cylinders. The upper ends of the fixing cylinders are each providedwith a fixing bracket. The fixing cylinders are fixed to a building outer wall through the fixing brackets. Each fixing cylinder is internally provided with a water storage cavity. A sealing piston is arranged in each water storage cavity. Each sealing piston seals the whole corresponding water storage cavity. The bottom of each sealing piston is connected with a piston rod. The piston rods penetrate through piston holes in the bottoms of the water storage cavities to extend out of the fixing cylinders. A supporting bottom plate is welded and fixed to the outer extension ends of the piston rods. An inclined supporting plate is arranged at the bottom of the supporting bottom plate. An air conditioner external unit is fixedly mounted on the supporting bottom plate through screws. Through the air conditioner external unit bracket, convenient mounting can be achieved, the safety of the bracket during mounting is improved, the effect that the air conditioner external unit has good heat dissipation performance during application can be ensured, power losses of the external unit are reduced, and application of the air conditioner external unit bracket is more environmentally friendly.

The invention relates to the field of installation of steel structures, in particular to a suspended ceiling keel sheet assembling and hoisting method. The suspended ceiling keel sheet assembling and hoisting method comprises two steps of assembling on ground and hoisting to elevation, and is characterized in that: in the process of assembling on the ground, primary and secondary suspended ceiling keels under a high-altitude net rack are vertically projected to a horizontal plane and then are assembled; and in the process of hoisting to elevation, lifting equipment is started to lift the suspended ceiling keels to the elevation, and then connecting rods for the suspended ceiling keels are fixedly connected with the net rack. The method reduces the risk in the process of mounting a high-altitude scaffold, and is accurate in positioning and higher in mounting speed.

The invention relates to an antifriction bearing for a steering column. The inventive device comprises an outer ring and an inner ring, each of said rings being fitted with a raceway for rolling elements (8) which are in contact with said raceways. At least one of the rings comprises an annular casing (3) to which two wires (4, 5) are mounted which form a raceway for the rolling elements (8). Moreover, said device comprises a preload washer (10) which is mounted axially between a radial portion of the casing (3) and one of the wires. The aforementioned wire is in contact with the bore of an axial portion of the casing (3) and another wire is also in contact with the bore of said axial portion of the casing (3).

The invention relates to cooperative control air-conditioner outdoor unit installing equipment and method. The equipment comprises a movable balance weight, a jack, a magnetic attracting block and anautomatic cutter replacing device. An intelligent controller is fixed to the top end of the balance weight. The jack is provided with a Y-direction transmission device. A pair of X-direction second transmission rods arranged in parallel are arranged between the balance weight and the jack. Z-direction second transmission rods are connected to the front ends of the X-direction second transmission rods. The Z-direction second transmission rods are fixedly connected with the rear end of the jack. The rear ends of the X-direction second transmission rods are connected with the front upper end of the balance weight. An X-direction first transmission rod and a Z-direction first transmission rod which are mutually connected are arranged between the jack and the magnetic attracting block. A Y-direction groove is formed in the front end face of the jack. The rear end of the X-direction first transmission rod is arranged in the Y-direction groove in an inserted manner. The magnetic attracting block is located below the X-direction first transmission rod and fixedly connected with the Z-direction first transmission rod. The equipment is beneficial for improving installing quality and installing efficiency of a split type air-conditioner outdoor unit, and the installing risk of high-altitude operation of personnel is reduced.

The invention provides a self-locking cantilever beam, a bearing device and an operation platform and relates to the technical field of construction tools. The self-locking cantilever beam comprises a cross beam and a clamping assembly arranged at one end of the cross beam. The clamping assembly can achieve the self-locking function. The clamping assembly comprises a first clamping part, a second clamping part, a connecting rod and a locking part. The first clamping part is arranged at one end of the cross beam. The two ends of the connecting rod are connected to the cross beam. The second clamping part is arranged on the connecting rod in a penetrated mode. The second clamping part can move close to or far away from the first clamping part to form a range adjustable clamping space between the first clamping part and the second clamping part. When the second clamping part moves to a preset position, the locking part can lock and limit displacement of the second clamping part so as to complete mounting of the self-locking cantilever beam. The self-locking cantilever beam is easy and convenient to mount and demount and can reduce the mounting risk of the personnel when personnel work at heights.

The invention provides a traction tool for a low-pressure turbine of an engine. The tool comprises a torque transmission bushing and a traction shaft sleeve, wherein in an assembly process, the traction end of a low-pressure turbine shaft sequentially passes through a core machine, the traction shaft sleeve and a connecting shaft sleeve and extends to the outside of a fan rotor, in an assembly process of a low-pressure turbine, torsion force is applied to a traction shaft outside, the traction shaft and the connecting shaft sleeve rotate synchronously, in the rotation process of the fan rotor,the traction shaft is driven to move axially through threads, so that the low-pressure turbine shaft has double acting force of rotation and axial movement, furthermore, a bearing cylindrical rolleron the low-pressure turbine shaft is gradually assembled into a bearing outer ring during rotation, thus solving the problem of mechanical collision between the cylindrical roller and the bearing outer ring in an existing assembly process.

The invention discloses a rapid positioning device for a traveling block lifting beam. The rapid positioning device comprises a left side plate, the lifting beam, a right side plate and lock tongue assemblies. The lock tongue assemblies are mounted in the central positions of the ends of the lifting beam, and the lower portions of the lock tongue assemblies are fixed with bottom baffles in a supported mode, and the front portions of the lock tongue assemblies are fixed with limiting plates in a clamped mode. The lifting beam is inlaid in the left side plate and the right side plate and then fastened through bolts. By controlling the lock tongue assemblies to extend or retract in the predetermined positions, rapid positioning and assembling of the traveling block lifting beam are achieved,the labor intensity and risks of workers are reduced greatly, and the assembling time is saved. The rapid positioning device is convenient and reliable to use and easy and convenient to operate and maintain.

The invention provides a concrete formwork structure and a construction method thereof. The concrete formwork structure comprises a formwork assembly and a reinforcing assembly; the reinforcing assembly comprises four reinforcing plates and connecting pieces, the four reinforcing plates are spliced to form a frame-shaped structure, and the reinforcing plates are connected through the connecting pieces; the formwork structure further comprises a lifting mechanism which comprises a lead screw, a driving motor and a lifting sleeve; the lead screw is vertically arranged and automatically rotates along a vertical shaft relative to the formwork assembly; the driving motor can drive the lead screw to rotate through belt transmission or chain transmission; and the lifting sleeve is in threaded connection with the lead screw and is connected to the inner sides of the reinforcing plates. The effect of lowering the mounting difficulty of the reinforcing assembly is achieved.

The invention provides a method for mounting a tube-shaped base of an ultra-large bulb tubular turbine generator set. The method comprises the following steps: an inner ring is assembled; circular arcs forming a transitional lining, an outer ring lining and an outer ring respectively are lifted in mounting positions to assemble into a circular ring; the positions of the transitional lining, the outer ring lining and the outer ring are adjusted, so that end faces of the circular ring correspond to form two ring-shaped weld seams; connecting plates are welded between the transitional lining and the outer ring lining and between the outer ring lining and the outer ring; the concentricity, the roundness and the center height of the inner and outer rings of the tube-shaped base are adjusted; a support frame is welded between the inner ring and the outer ring of the tube-shaped base; the concrete is cast; the parts of the ring-shaped weld seams, which are not blocked by the connecting plates, are welded; the connecting plates are cut off, and the parts of the ring-shaped weld seams, which are blocked by the connecting plates, are welded; and the support frame is cut off. The mounting process has the advantages of greatly lowering deformation caused by thermal stress, ensuring the roundness of the outer ring of the tube-shaped base, reducing mounting difficulty, lowering mounting risk and improving mounting precision.

The invention relates to the technical field of immersed tube tunnel construction, in particular to a design method of a negative buoyancy immersed tube. The method does not need to consider the design of a freeboard adjustment layer or consider the design contradiction between a freeboard value and floating resistance in an operation period, through the design thickness of ballast concrete determined by meeting the structural arrangement requirement, whether the preset first anti-floating coefficient is exceeded or not is inversely calculated, so that negative buoyancy larger than the corresponding preset requirement is obtained, then the design thickness of the first ballast concrete and the design thickness of the second ballast concrete are distributed according to the thickness calculated when the negative buoyancy is equal to the first anti-floating coefficient, it is effectively guaranteed that the immersed tube can meet the negative buoyancy requirement in the sinking and buttjoint stage specified by the existing specification, the negative buoyancy requirement after replacement of a ballast water tank is completed through butt joint specified by the existing specificationcan be met, meanwhile, the bearing capacity requirement of a transport ship is lowered, the lifting force needed in the immersed tube installation process can be reduced, the installation risk is reduced, and the transportation and installation cost is reduced.

The invention discloses a construction method of a prefabricated fair-faced concrete exterior wall hanging plate connecting structure, which comprises a building exterior wall hanging plate, an upper connecting plate, a bracket connecting piece and an adjustable bolt, a floor slab at the top of the exterior wall hanging plate is connected with a plate top chain block, and the middle of the exterior wall hanging plate is detachably connected with an in-plate chain block; a jack is detachably connected to the top face of the lower floor. By arranging the hoisting holes, the buried anchorage devices and the special hoisting devices in the exterior wall hanging plate, convenient and fast installation and hoisting can be achieved when the externally-hung wall plate is hoisted, and overall stress and convenient and fast disassembly are facilitated due to the arrangement of the buried anchorage devices and the internal threaded sleeves; through the comprehensive application of the in-plate chain block, the jack and the plate top chain block, the exterior wall cladding can be accurately positioned and adjusted in the hoisting process, the plate top chain block can accurately position the vertical direction, and the in-plate chain block and the jack can accurately position the horizontal direction, so that the installation quality of the exterior wall cladding is improved.

The invention relates to an accumulated continuous pre-assembly construction method for a large special-shaped steel structure. The accumulated continuous pre-assembly construction method comprises the steps that 1, the large special-shaped steel structure is divided into a plurality of segments; step 2, simulation of a pre-assembly operation is conducted by using a total station; 3, after the measurement and control points of all the segments are determined, a theoretical measurement point drawing is automatically output in a deepened design model for a measurer to contrast and check and actually measure all the segmented components; 4, jig frames are set on site according to the measurement and control points of respective segments, and pre-assembling of the segments on the corresponding jig frames is conducted; and step 5, all the assembled segments are re-measured, and the segments are sequentially hoisted to actual mounting positions for mounting after the segments are accurate. According to the accumulative continuous pre-assembly technology, the requirement for installation of components in a narrower space can be met, large components are segmented, the hoisting difficulty is lowered, the problem that due to the fact that the rigidity of the components is not enough, the components are prone to deformation during hoisting, and the installation difficulty is increased is solved, and the transportation and manufacturing difficulty of the components is lowered.

The invention discloses a multifunctional optical sensor device with an alarm lamp. The multifunctional optical sensor device comprises a sunlight sensing system, an ambient light sensing system and an alarm execution system. The sunlight sensing system comprises a sunlight sensing circuit capable of automatically regulating temperature of a vehicular air conditioner; the ambient light sensing system comprises an ambient light sensing circuit capable of automatically regulating brightness of vehicular headlights; the alarm execution system comprises an alarm lamp executing circuit capable of realizing execution of the alarm lamp automatically. The alarm execution system, the sunlight sensing system and the ambient light sensing system are packaged in the same device, thereby guaranteeing various system functions while effectively reducing amount of vehicular parts, greatly simplifying installation structure of a sunlight sensor, an ambient light sensor and the alarm execution device of a vehicular integrated system, saving installation space of the parts, lowering installation cost and reducing potential risk of failure.