14443results about How to "Improve installation efficiency" patented technology

According to the ball mounting device for the ball screw pair of the steering gear, the angle of the nut base is adjusted through the nut rotation driving structure in the steel ball mounting process, and then injection of steel ball channels with inlets of different angles is guaranteed; the ball injection structure achieves lifting motion based on the ball loading lifting driving structure, and it is ensured that steel ball channels with different heights are injected. And automatic discharging of the steel balls is achieved through cooperation of the discharging structure and the ball injection structure, and the installation efficiency is effectively improved.

The invention belongs to the technical field of numerical control device manufacturing, and particularly relates to a mobile installation robot, a robot control system and a control method. Comprising a base, the base is connected with the fixed end of a mechanical arm assembly, and the output end of the mechanical arm assembly is connected with an end effector; the end effector comprises a pose adjusting module, a grasping mechanism and a sensing measuring unit; the upper end of the pose adjusting module is connected with the mechanical arm assembly through a first connecting piece. The lower end of the pose adjusting module is connected with the grabbing mechanism through a second connecting piece. The grabbing mechanism is used for grabbing a to-be-installed assembly. The sensing measurement unit is installed on the second connecting piece. The sensing measurement unit is used for acquiring data in an installation process; and the installation quality and the installation efficiency in a small space environment are improved.

The utility model provides a splicing type sound barrier which comprises a plurality of stand columns and sound barrier unit plates, the stand columns are sequentially arranged, the sound barrier unit plates are inserted between the adjacent stand columns, each stand column comprises a bottom plate and two wing plates, the two wing plates are fixed to the bottom plate and arranged in parallel, and a left side plate and a right side plate are of concave-convex structures matched with each other. The upper side plate and the lower side plate are of concave-convex structures which are matched with each other. The adjacent sound barrier unit plates and the upper and lower adjacent sound barrier unit plates and the left and right adjacent sound barrier unit plates are spliced through concave-convex structures, so that webs in traditional H-shaped steel can be omitted, only the profile steel with two wing plates is adopted for fixing, and the situation that an H-shaped steel structure is adopted in a traditional structure is avoided; the width of each sound barrier unit plate must be matched with the distance between every two adjacent section steel, construction inconvenience and efficiency reduction can be caused by the fact that the width of each sound barrier unit plate is too large or too small, the sound barrier unit plates can have large size elasticity within a certain range, and the production efficiency and the installation efficiency are improved.

The invention discloses an adjustable turnover mold core type mechanical arm and a using method thereof, and relates to the field of mold core mounting, the adjustable turnover mold core type mechanical arm comprises a base and a mechanical arm body mounted at the top of the base, a turnover mechanism is mounted at the output end of the mechanical arm body, and a positioning mechanism is mounted on one side of the turnover mechanism. The air cylinder pushes the connecting plate to move and drives the moving frame and the second rack to slide, the racks apply transverse force to enable the gear to rotate, then the angle of the rotating rod is adjusted, mold core overturning is achieved, meanwhile, the first rack is matched with the gear, and the overturning angle is flexibly adjusted through combined control of the limiting rod and the threaded rod; the limiting rods and the threaded rods ensure that the angle is accurately controlled during small-angle operation, efficient installation can be kept during large-angle overturning, the design meets the installation requirements of different mold cores, and the flexibility, installation precision and efficiency of a production line are improved.

The present invention provides a suction anchor reinforcement device, a suction anchor and a suction anchor installation method, which belong to the field of marine engineering. The suction anchor reinforcement device includes: a base, which is arranged on the side wall of the suction anchor; a control mechanism, which is arranged in the base; and an anchor claw, which is slidably connected to the base and movably connected to the control mechanism; wherein, by manipulating the control mechanism, the anchor claw can be made to form a preset angle with the base. At the same time, the present invention also discloses a suction anchor including the aforementioned reinforcement device. The suction anchor and its reinforcement device provided by the present invention are easy to deploy and have a small additional penetration resistance, which is not only beneficial to improving the vertical and pull-out bearing capacity of the suction anchor, but also beneficial to improving the installation efficiency of the suction anchor.

The utility model relates to the technical field of cleaning equipment, in particular to a scrubber connecting rod and a scrubber, the connecting rod comprises a hinge assembly, a rod body assembly, a handle assembly and a connecting assembly, the rod body assembly comprises a first rod body assembly and a second rod body assembly, and a water pump is arranged in the first rod body assembly; the connecting assembly comprises a first connecting assembly and a second connecting assembly; the first connecting assembly is used for connecting one end of the first rod body assembly with the hinge assembly, and a circuit for connecting the water pump and the hinge assembly and a circulating water path are contained in the first connecting assembly; the second connecting assembly is used for connecting the other end of the first rod body assembly with one end of the second rod body assembly; the other end of the second rod body assembly is connected with a handle assembly, and a circuit channel communicating with the water pump and the handle assembly is contained in the second connecting assembly. The utility model aims to solve the problem of external damage to circuit elements, waterways and circuits of the connecting rod when the water tank of the scrubber is taken or placed or the scrubber body is maintained, and the volume is reduced at the same time.

The invention relates to the technical field of electrical cabinet installation, in particular to an adjustable electrical cabinet installation device which comprises a heightening installation table, fixed connection sleeves are symmetrically and fixedly arranged at the two ends of an electrical cabinet body, guide bearing rods are fixedly arranged in the fixed connection sleeves, and installation insertion holes are symmetrically formed in the two sides of the fixed connection sleeves; insertion connecting holes are symmetrically formed in the two ends of the lower side of the electrical cabinet body, auxiliary fixing holes are formed in the insertion connecting holes, movable matching holes are symmetrically formed in the heightening mounting table, universal wheels are installed at the lower end of the movable bearing table, and limiting guide columns are fixedly arranged at the upper end of the movable bearing table. A movable bearing platform is fixedly arranged on the base, a positioning attaching plate is further fixedly arranged on one side of the movable bearing platform, a matched bearing hole is formed in the positioning attaching plate, a movable positioning column is inserted into the matched bearing hole, a column body bearing plate is fixedly arranged on the movable positioning column, and a fourth spring is connected to the movable positioning column in a sleeving mode.

The invention discloses a multistage adjustable pipe support bracket based on petroleum pipeline installation. The multistage adjustable pipe support bracket comprises a first pipeline, a second pipeline is arranged on one side of the first pipeline, an installation frame is arranged at the bottom of the first pipeline, a presumption mechanism is arranged on one side of the installation frame, and a limiting and clamping mechanism is arranged on the top of the installation frame; when the petroleum pipeline is installed, one section of pipeline is stabilized firstly, then the other section of pipeline is placed on the movable lifting frame, the lifting frame is synchronously adjusted according to the height of the limiting frame, the position of the lifting frame is limited through clamping plates on the two sides of a connector, it is guaranteed that the two sections of pipelines can be attached completely and correspond to each other, and the installation efficiency is improved; and meanwhile, clamping and pushing plates are arranged on the two sides of the pipeline on the movable side, the pipeline is pushed and driven, the pipeline can be conveniently pushed to be close to the other pipeline, clamping plates on the two sides of the connectors are evacuated, the two connectors can be tightly attached, and the fixing structure of the connectors can be conveniently installed.

The invention belongs to the technical field of spacer installation, and particularly relates to a four-split spacer installation robot based on a movable lifting rotating platform, and the robot comprises an installation frame, and a spacer storage device, the movable lifting rotating platform and a wire clamp locking device which are disposed on the installation frame. The movable lifting rotating platform comprises a walking chassis, a walking driving mechanism, a lifting mechanism, a rotating driving mechanism, a spacer gripper and a wire lapping driving mechanism, the walking chassis is movably arranged on the mounting frame, the driving end of the walking driving mechanism is connected with the walking chassis, the bottom of the lifting mechanism is rotatably arranged on the walking chassis, and the rotating driving mechanism is arranged on the rotating driving mechanism. The spacer gripper is arranged at the top of the lifting mechanism, and the driving end of the wire lap joint driving mechanism is connected with the spacer gripper. According to the invention, automatic installation of the four-bundle conductor spacer can be realized, the control program is simple, and the working efficiency is high.

The invention provides a modular assembly type steel reinforced concrete combined beam column joint and an assembly method thereof. The modular assembly type steel reinforced concrete combined beam column joint comprises a joint core, a steel reinforced concrete combined column, a steel reinforced concrete combined beam, a plurality of single-side self-locking high-strength bolts and a plurality of common high-strength bolts. The node core comprises a node core cavity, at least one connecting end and at least one group of L-shaped connecting end plates; threaded holes are formed in the corresponding positions of the L-shaped connecting end plates. The steel reinforced concrete combination column comprises a column-shaped steel framework and column concrete wrapping the column-shaped steel framework. Bolt holes are formed in the corresponding positions of the columnar steel framework; bolt holes, grouting holes and grout outlet holes are reserved in the corresponding positions of the column concrete; the steel reinforced concrete composite beam comprises a beam shoe, beam H-shaped steel and beam concrete wrapping the beam H-shaped steel. Bolt holes are formed in the corresponding positions of the beam H-shaped steel. The beam shoe is used for being connected with the node core. The scheme has the advantages of convenience in field assembly, high connection reliability, short construction period, capability of realizing dry connection and the like.

The invention relates to the technical field of cables, and provides a low-voltage power supply cable which comprises a plurality of conductive cables, each conductive cable comprises a plurality of stranded conductors, and each stranded conductor is coated with an insulating layer; the plurality of insulating layers are arranged on the inner side of the inner lining layer, the plurality of stranded conductors are all arranged inside the inner lining layer, the space between the inner lining layer and the plurality of insulating layers is filled with a filling layer, the outer part of the inner lining layer is coated with a sheath layer, the end part of each sheath layer is slidably sleeved with the butt-joint cylinder, the stringing assembly is arranged on the butt-joint cylinder, and the heat dissipation assembly is arranged on the inner lining layer. A conductive frame is arranged between every two opposite butt joint cylinders, a conductive assembly is installed on each conductive frame, and a heat dissipation assembly is installed on each conductive assembly. Through the above technical scheme, the problems that in the prior art, due to the fact that high current density is prone to occurring at the butt joint position of two cables, the local temperature of a contact point rises, and the heat dissipation effect is poor are solved. And a gap is generated between the two cables, so that the current transmission performance is influenced.

The laminated slab construction hoisting device comprises a hoisting frame, the hoisting frame comprises two longitudinal beams arranged in parallel and two transverse beams arranged in parallel, and the two transverse beams are fixed between the two longitudinal beams to form a rectangular frame matched with a laminated slab unit in size; a lifting device and a positioning device are installed on the lifting frame, the lifting device is installed on the opposite sides of the two longitudinal beams, the lifting device comprises a winding assembly and lifting assemblies, the lifting assemblies are symmetrically arranged on the two sides of the winding assembly, the winding assembly is provided with two output ends, and the two output ends are connected with the positioning device. The lifting assemblies on the two sides are driven by the output ends of the two sides of the winding assembly correspondingly, the positioning device is used for positioning the position of the laminated slab, the laminated slab is kept stable in the lifting process, collision and damage caused by shaking are avoided, and the working efficiency is improved. And through stable hoisting and accurate positioning, the risks of shaking and collision of the laminated slab in the hoisting and mounting process are reduced, and the operation safety is improved.

The utility model discloses a lagging jack mounting trolley capable of accurately positioning a lagging jack. The lagging jack mounting trolley comprises a trolley main body and a steering system, an arch frame lifting and jacking device is arranged on the trolley body, the arch frame jacking device comprises two jacking longitudinal beams which are arranged in parallel in the longitudinal direction of the trolley and provided with a plurality of arch frame carrying trolleys, and the jacking longitudinal beams ascend and descend based on jacking oil cylinders at the two ends; the two plane scanning laser radars are located at the front end and the rear end of the vehicle and used for obtaining tunnel side wall contour data; the bearing cross beam is arranged between the jacking oil cylinder and the jacking longitudinal beam, and a position adjusting device is connected between the jacking longitudinal beam and the bearing cross beam. The device has the advantages that the plane radar is used for obtaining tunnel contour data to control a vehicle to run in the middle, the position adjusting device is used for adjusting the left-right position and the deflection angle of the vehicle, and the purpose of accurately positioning the arch center is achieved. Labor intensity can be relieved, potential safety hazards are reduced or eliminated, accurate centering of the arch center can be rapidly achieved, and the installation efficiency of the arch center is improved.

The composite phase-to-phase spacer comprises the unmanned aerial vehicle and a balance rope ladder installed at the bottom of the unmanned aerial vehicle, the bottom end of the balance rope ladder is connected with a hoisting platform and a spacer assembly connected with the hoisting platform, and the hoisting platform comprises a connecting rod, a connecting rod, a connecting rod, a connecting rod, a connecting rod and a connecting rod; an auxiliary platform housing; an electric control assembly; the spacer assembly comprises a spacer rod; a magnetic structure; a wire locking hook; and a telescopic assembly. Compared with a traditional spacer rod installation mode, a worker needs to directly climb a tower or conduct wiring in traditional high-altitude live-line work, and high safety risks exist, the unmanned aerial vehicle is used for live-line installation of the spacer rod, the hoisting platform and the spacer assembly which are connected through a flexible structure are adopted, and the safety risk is high. The effect of accurate positioning is achieved according to the positioning auxiliary frame while good wind resistance and insulation effect are achieved.

The utility model relates to a lining steel pipe diversion tunnel curve section installation system which comprises a lining steel pipe, a horizontal assembling jig frame used for turning over a lining steel pipe welding stiffening ring and a moving trolley used for climbing pipes in a tunnel and assisting in butt joint of the lining steel pipe. The horizontal assembling jig frame has the advantages that the driving machine is arranged in the horizontal assembling jig frame to achieve synchronous rotation of the lining steel pipes, the limiting arms capable of being elastically opened and closed are arranged, the assembling and disassembling efficiency of the lining steel pipes is improved, the horizontal assembling jig frame can flexibly control the distance based on the rails, the overall installation effect is higher, consumed time is shorter, and the assembling and disassembling efficiency is improved. The traditional vertical assembling mode that the steel pipes are externally provided with stiffening rings is changed, and the practical value is high; a structural system of assembling type inner support section steel combined adjustable support rods is adopted to replace a traditional fixed welding umbrella-shaped inner support, and the field construction efficiency is improved.

The present invention relates to a photovoltaic support for a solar power station used in the field of converting infrared radiation, visible light or ultraviolet light to generate electric energy. The photovoltaic support comprises a support leg, a tripod rotatably mounted on the upper end of the support leg and a photovoltaic panel receiving frame hinged on the left end of the tripod. A support controller is fixedly mounted on the upper end of the tripod. The above-mentioned stabilizing sleeve, adaptive stabilizing group and photovoltaic support control system are used in combination to effectively improve the installation stability and portability of the photovoltaic support, improve the installation efficiency and installation automation of the photovoltaic support, and effectively promote the adaptability of the photovoltaic support to the installation environment, effectively promote the versatility of the photovoltaic support, and can be effectively applied to wasteland plains, deserts, large reservoirs and other environments, thereby reducing the construction cost of the solar power station, reducing cost losses, effectively reducing the subsequent maintenance difficulty and maintenance cost of the photovoltaic support, promoting the reuse rate of the photovoltaic support, and effectively promoting the economic adaptability of the photovoltaic support.

The pipeline mounting device based on the natural gas power generation project comprises a fixing unit used for being connected to a pipeline in a sleeving mode, a supporting unit is arranged on the fixing unit, and the supporting unit can adaptively support the fixing unit and the pipeline in a telescopic mode; the adjusting unit is used for adjusting the fixing position of the fixing unit; the restraining unit is used for restraining deformation of the pipeline in the radial direction during thermal expansion. The device is fixed to the ends of pipelines with different diameters, the pipelines are pre-tightened and aligned through the adjusting unit before welding, installation is convenient, after welding, the device is not disassembled, supporting and restraining are conveniently conducted on the pipelines, and the tedious process of pipeline installation is avoided through the integrated structure of pre-tightening installation and supporting and fixing; axial extension and axial rotation of the pipeline are restrained through the adjusting unit and the fixing unit, and radial deformation of the pipeline is restrained through the restraining unit.

The invention discloses a building curtain wall mounting and fixing device, relates to the technical field of building curtain wall mounting equipment, and aims to solve the problem that the stability of an existing building curtain wall mounting and fixing device cannot be guaranteed during curtain wall mounting. The adsorption assembly is used for adsorbing the curtain wall, and the clamping assembly is used for carrying out auxiliary clamping and fixing on the curtain wall when the adsorption assembly stretches out and draws back to adsorb the curtain wall; the driving adjusting mechanism comprises a driving assembly used for driving the adsorption assembly to stretch out and draw back and an adjusting assembly used for adjusting the adsorption and clamping angles of the adsorption clamping mechanism; the auxiliary moving mechanism comprises an auxiliary assembly which is matched with the adjusting assembly to adjust the angle and the position of the adsorption clamping mechanism, the adsorption clamping mechanism, the adsorption assembly and the self-adaptive clamping assembly are combined with one another, and through double-insurance matching of adsorption and clamping, rapid adsorption and stable clamping of the curtain wall are achieved; and the complexity and the time cost of manual operation are effectively reduced.

The invention discloses a multi-layer steel structure modular structure intelligent mounting platform, and particularly relates to the technical field of steel structure mounting, the multi-layer steel structure modular structure intelligent mounting platform comprises a supporting plate, a sliding frame, a push-up electric cylinder and a distance synchronous adjusting mechanism; wherein the interval synchronous adjusting mechanism comprises a linkage frame, a linkage frame, a linkage screw rod, two threaded sleeve blocks, a gear motor, a bearing sleeve block, a rotating shaft, an induction block and an interval sensor, and a first-stage synchronous adjusting mechanism is arranged on one side of the linkage frame; wherein a two-stage synchronous adjusting mechanism is arranged at the top end of the rotating shaft. By means of the interval synchronous adjusting mechanism, the interval distance between two first-stage platform rotating points can be adjusted synchronously, intelligently and accurately according to the specified distance, so that the installation efficiency of the modular structure of the multi-layer steel structure is greatly improved, and the problems that a large amount of installation time is wasted due to the fact that installation is large in limitation, and the installation cost is reduced are solved. And the installation efficiency is greatly reduced.

The utility model belongs to the technical field of photovoltaic equipment, and particularly relates to a photovoltaic silicon crystal plate multifunctional mounting rack which comprises a mounting plate, lead screws are rotatably connected to the two sides of the interior of the mounting plate, clamping plates are in threaded connection with the outer portions of the lead screws and located on the outer side of the mounting plate, and rotating shafts are rotatably connected to the upper portions of the interiors of the clamping plates. A pressing plate is fixedly connected to the exterior of the rotating shaft, and a base is arranged below the mounting plate; the utility model provides a multifunctional mounting rack for a photovoltaic silicon crystal plate, and solves the problems that in the prior art, the function of a photovoltaic plate is single, the photovoltaic plate is generally fixed on the mounting rack through a plurality of bolts during mounting, and when the photovoltaic plate is fixed through the bolts, workers need to screw the bolts in sequence with the help of tools, so that the working efficiency is high. The problems that an existing photovoltaic panel mounting frame is very troublesome to mount and time-consuming and labor-consuming to dismount, replace or maintain, and the existing photovoltaic panel mounting frame is mostly fixed and cannot be subjected to angle adjustment according to the irradiation direction of sunlight, so that the conversion efficiency of electric energy is relatively influenced, and the practicability is relatively poor are solved.

The invention relates to the field of crankshaft detection, in particular to an adjustable support for crankshaft detection and a detection device.The adjustable support comprises an installation guide rail, a supporting mechanism is installed on the installation guide rail through positioning bolts, and the supporting mechanism is used for installing and fixing a crankshaft to be detected so that the crankshaft to be detected can be in a horizontally rotatable state; wherein the detection device further comprises a controller, an alarm, a positioning part and a detection part on the basis of the adjustable support, the positioning part is used for emitting positioning laser, and the detection part is used for detecting a main shaft and a connecting rod shaft of the crankshaft to be detected and feeding back a detection result to the controller. According to the invention, through flexible adjustment of the adjustable support, detection requirements of crankshafts of different specifications and sizes are met, and the problem of adaptability of crankshaft detection is solved; through the detection device capable of being flexibly adjusted, detection of the crankshaft is conveniently and rapidly completed, and the problem of low efficiency of a traditional detection mode is solved.

The invention discloses a split type modularized inclined vertical rib stator base which is composed of an upper inclined vertical rib, a lower inclined vertical rib, an upper annular plate, a middle annular plate, a lower annular plate, an inter-annular rib plate, a lower annular circumferential reinforcing plate and a lower annular radial reinforcing plate, the upper inclined vertical rib and the lower inclined vertical rib are combined and fixed to form a main vertical rib structure, all layers of annular plates are welded and fixed in the circumferential direction, and the inter-annular rib plate is vertically welded. The reinforcing plate reinforces the lower annular plate. The main vertical rib structure is decomposed into the upper inclined vertical rib and the lower inclined vertical rib, so that the hoisting height of the stator is compressed, the low-rail integral hoisting of the stator frame can be realized, and the engineering cost is reduced; and the transportation requirements of high-altitude areas are met. The split mode of the main vertical rib structure can optimize the on-site installation process of the generator set, and the requirement for the structural stability of the giant water-turbine generator set is met. And the device can be modularly designed, is suitable for large and giant water-turbine generator sets with different structures and sizes, is flexible in structure, and has wide engineering application and popularization values.

The invention relates to the technical field of pipeline connecting devices, and discloses a telescopic pipeline connector and an auxiliary mounting device thereof, and the telescopic pipeline connector comprises a telescopic structure, an anti-retreating locking structure and the auxiliary mounting device. The telescopic structure achieves adjustment of the pipeline length through a telescopic sleeve and a connecting pipe, and meanwhile the sealing performance and stability are guaranteed. The anti-retreating locking structure achieves tight locking and sealing of the pipeline and the telescopic structure through a conical sealing ring, a locking ring and a thorn claw, and the stability of the pipeline during thermal expansion and cold contraction is guaranteed. According to the auxiliary mounting device, the supporting seat and the clamping assembly are matched with the stepping motor and the two-way screw rod, so that the pipelines with different diameters are accurately adjusted and clamped, the mounting process is simplified, and the mounting efficiency and safety are improved.

The invention discloses a fabricated curtain wall construction method, system and equipment based on a BIM technology and a storage medium. The method comprises the following steps: performing virtual paying-off on a building main body structure to obtain paying-off data; acquiring curtain wall information of the fabricated curtain wall; performing hoisting path simulation on the fabricated curtain wall according to the curtain wall information and the pay-off data, and adjusting the simulated hoisting path in a BIM model including the building main body structure to obtain an adjusted BIM model; the assembled curtain wall is temporarily fixed through the adjusted BIM model; performing error detection on the temporarily fixed fabricated curtain wall to obtain an error report, performing position adjustment on the temporarily fixed fabricated curtain wall according to the error report, and stopping adjustment when an error value is within a preset range to complete installation. By implementing the technical scheme provided by the invention, the construction precision of the fabricated curtain wall is improved.

The utility model provides an automobile wire harness flame-retardant protective sleeve, which comprises a pipe body, two ends of the pipe body are fixedly connected with interfaces, a support sleeve is arranged in the pipe body, a positioning groove is arranged in the support sleeve, and a positioning block is slidably connected in the positioning groove. According to the flame-retardant protective sleeve for the automobile wire harness provided by the utility model, one end of the wire harness is inserted into the supporting sleeves in the pipe body from the interface at one end of the pipe body, and then passes through the interiors of the supporting sleeves, so that the wire harness is inserted into the supporting sleeves after being moved out from the interface at the other end of the pipe body; and meanwhile, the two ends of the pipe body move towards the two sides correspondingly, so that the limiting blocks are driven to be separated from the limiting holes, the positioning blocks are driven to be separated from the positioning grooves, extension and contraction of the pipe body are not affected, and the installation efficiency is improved. Meanwhile, the positioning blocks and the limiting blocks can be matched through a plurality of supporting sleeves after contraction.

The invention relates to the technical field of building construction, in particular to an assembly type prefabricated part connecting structure and a construction method.The assembly type prefabricated part connecting structure comprises a first wing plate and a second wing plate, the first wing plate and the second wing plate are installed at the two ends of a prefabricated wall correspondingly, an assembly groove is formed in the surface of the first wing plate, and an assembly plate is integrally formed on the surface of the second wing plate; when the two edge grooves provided with the first wing plates and the second wing plates are spliced, the splicing plates are inserted into the splicing grooves, mounting grooves are formed in the upper ends and the lower ends of the splicing plates, inserting handles are inserted into the two sides of the mounting grooves, and the ends, away from the mounting grooves, of the inserting handles are inserted into the surfaces of the splicing grooves. The fabricated prefabricated part connecting structure and the construction method have the beneficial effects that through splicing of the first wing plates and the second wing plates and cooperation of the splicing plates and the splicing grooves, firm connection between prefabricated wall bodies is achieved. And meanwhile, due to the pre-fixing design of the insertion handle and the positioning groove, the connection stability is further enhanced, and the problems of dislocation and looseness in the wall splicing process are effectively avoided.

The utility model discloses a lubricating oil nozzle detection device for an aero-engine, and belongs to the technical field of oil nozzle detection. A lubricating oil nozzle detection device for an aero-engine comprises a detection oil tank and further comprises a mounting frame fixedly connected to the top of the detection oil tank; wherein the mounting frame is connected with a plurality of oil distribution pipes through a lifting oil distribution part, and the lifting oil distribution part is used for driving the oil distribution pipes to move up and down; the placing plate is fixedly connected to the mounting frame; wherein a plurality of placing holes are formed in the top of the placing plate in a penetrating manner, and the placing holes are aligned with the oil distributing pipes up and down; according to the utility model, the electric push rod drives the oil distributor, the oil distribution pipe and the rack plate to move up and down, so that a plurality of oil nozzles can be quickly mounted and fixed or unfixed in the detection process, thereby realizing quick assembly and disassembly of the oil nozzles, being more convenient for workers to operate, and being capable of quickly detecting the oil nozzles, thereby improving the detection efficiency.

The invention relates to the technical field of building construction, and discloses a cantilever type multi-layer large-span steel reinforced concrete wall active anti-cracking construction method which comprises the following steps: step 1, carrying out optimization calculation through finite element software; secondly, a supporting jig frame is installed; step 3, mounting a cantilever support; fourthly, pouring is conducted in different areas; 5, the orthogonal truss is poured; and sixthly, layered pouring is conducted. Through all-working-condition stress simulation analysis, reasonable construction procedures of all stages of the steel reinforced concrete cantilever wall are optimized, through the arranged locking unit and the arranged limiting unit, the construction efficiency and safety are improved, meanwhile, the supporting operation procedures are reduced, the efficiency is improved, meanwhile, the cantilever wall fully considers the tension and compression area, and the construction cost is reduced. The pressed area is poured in advance in a stepped mode, and the pulled area is poured later, so that the cracking risk of the cantilever type multi-layer large-span steel reinforced concrete wall is effectively weakened, and the construction safety and stability of all stages of the structure are guaranteed.

The invention relates to the technical field of bolt looseness prevention, and particularly discloses a bolt looseness prevention vibration test device which comprises a vibration table. The test tool is detachably connected to the vibration table, the test tool is provided with a mounting hole for a to-be-tested bolt to penetrate through, and the side walls of the two ends of the mounting hole abut against the head of the to-be-tested bolt and a nut in threaded connection to the to-be-tested bolt respectively; the counterweight plate is provided with a through hole for the to-be-tested bolt to pass through, and the counterweight plate is located between the test tool and the nut; the force sensor is arranged on the outer side of the to-be-tested bolt in a sleeving mode, and the force sensor is located between the test tool and the head of the to-be-tested bolt and used for detecting the pre-tightening force of the to-be-tested bolt; and the data acquisition instrument is arranged on one side of the vibration table, is electrically connected with the force sensor and is used for acquiring the pre-tightening force, detected by the force sensor, of the to-be-detected bolt. According to the invention, the vibration test can be conveniently carried out and the change condition of the clamping force can be recorded.