434results about How to "Guaranteed verticality" patented technology

The invention discloses a multi-station automatic grinding system. The multi-station automatic grinding system comprises a workbench, a conveying belt set, automatic grinding stations and a plurality of carrying discs. The automatic grinding station comprises a conveying and distributing device, a rough grinding device, a multi-station grinding device and a carrying device; the multi-station grinding device comprises four grinding devices; each grinding device is provided with a cleaning mechanism; the carrying device comprises three carrying mechanisms. Each carrying mechanism is provided with two pushing mechanisms arranged in an array mode and two displacement mechanisms. The carrying disc is provided with an automatic adjusting structure. The invention further discloses a grinding machining method. Full-automatic processing of carrying, distributing, cleaning, grinding and discharging of the carrying disc of the optical fiber head material and recycling of the product and the carrying disc is achieved; the multi-station grinding device composed of a plurality of grinding devices is used for carrying out multiple times of fine grinding processing and standby processing on the optical fiber head, so that the processing efficiency is ensured.

The invention discloses a preparation method of a metalized vertical glass through hole. The preparation method comprises the following steps: modifying a target area of a glass substrate by adopting a laser irradiation method to form a denatured area; forming a first metal layer on the glass substrate in a sputtering manner; ablating the first metal layer corresponding to the denatured region by adopting an ultraviolet radiation method so as to expose the denatured region; etching the denaturation region by using a corrosive liquid to form a first blind hole; cleaning and drying the glass substrate; forming a second metal layer on the glass substrate in a sputtering manner; ablating the second metal layer at the bottom of the first blind hole by adopting an ultraviolet radiation method; etching the first blind hole by using a corrosive liquid to form a second blind hole; cleaning and drying the glass substrate; and repeating the steps (6)-(9) to obtain the metalized vertical glass through hole. According to the preparation method, the glass through hole with high depth-diameter ratio and good perpendicularity can be prepared, and meanwhile, the metal layer can be stably and uniformly attached to the inner wall of the glass through hole.

The utility model provides an electric pipeline cutting machine, and belongs to the technical field of pipeline cutting. The electric pipeline cutting machine comprises a main body, a cutting mechanism and a clamping mechanism, the main body comprises an L-shaped base, a box body is installed at the upper end of a vertical plate of the L-shaped base in an embedded mode, the inner wall of the box body is rotationally connected with an inner gear ring through a bearing, and a connecting ring is installed on the outer side of the inner gear ring; the end, away from the connecting ring, of the circular plate is rotationally connected with a first rotating shaft and a second rotating shaft, a second gear is installed outside the first rotating shaft, a support is installed on the side, away from the circular plate, of the second gear, a second motor is installed outside the support, and the output end of the second motor penetrates through the support and is sleeved with a saw blade. Transverse plates are movably inserted in the pair of mounting plates, the upper ends of the transverse plates are movably connected with a pair of U-shaped seats, and the upper ends of the pair of U-shaped seats are provided with pressing wheels, the practicability of the pipeline cutting machine can be effectively improved, and the pipeline cutting machine has high practical value.

The invention provides a processing method of a light guide rod product, which comprises the following steps: providing a blank piece, and processing a first side surface and a second side surface which are adjacent; by taking the first side surface and the second side surface as references, the blank is mounted on a tool, and two end surfaces of the blank are processed by an upper disc to respectively obtain finished product end surfaces; coating the end surfaces of the two finished products to form coated end surfaces of the finished products; bonding an end face protection piece on the end face of the coated finished product, processing an opposite third side face to obtain a third finished product side face, and processing the first side face to obtain a first finished product side face; and side face protection pieces are bonded to the third finished product side face and the first finished product side face through wax, the opposite fourth side face is machined to obtain a fourth finished product side face, and the second side face is machined to obtain a second finished product side face. The problems that in the prior art, in the process that a light guide rod is machined through a matched disc, dismounting difficulty is large, and edge breakage control is not good are solved.

The invention discloses a novel method for machining a last blade lock notch groove through a planing and slotting machine, relates to the technical field of machining of rhombic lock notch grooves of steam turbine rotors, and aims to solve the problems that according to an existing last blade lock notch groove method, when an acute angle is machined, a tool is prone to breakage, so that the lock notch groove is punctured, and the perpendicularity of the lock notch groove is poor. The method comprises the following steps that firstly, a to-be-machined lock notch rhombus and quadrilateral CAD drawing is drawn and comprises to-be-machined parts at the left end and the right end of a lock notch and a feed space, and each to-be-machined part is divided into an acute triangle part, a rectangular part and an obtuse triangle part; 2, a tool is selected, and a rough slotting tool is selected as the tool; the machining method is used for machining the locking groove of the tail blade of the steam turbine rotor, the machining allowance is sequentially reduced through rough machining, semi-finish machining and finish machining, the machining efficiency is ensured, and the possibility that the cutter is broken when the acute angle is machined is also prevented.

The invention relates to the technical field of carbon dioxide recovery systems, in particular to a carbon dioxide recovery system assembly connecting device which comprises a transverse pipeline and L-shaped pipelines evenly welded to the transverse pipeline. Welding equipment is used when the connecting device is assembled, the welding equipment comprises a bottom plate, a vertical plate is arranged on the left side of the bottom plate, and a bearing and fixing mechanism used for fixedly installing the transversely-arranged pipeline is arranged on the vertical plate; a clamping fixing mechanism is slidably arranged on the right side of the upper surface of the bottom plate. According to the technical scheme, the multiple L-shaped pipelines can be synchronously clamped and fixed, the spacing distance between the pipelines can be synchronously and evenly adjusted, meanwhile, the perpendicularity of the vertical sections of the L-shaped pipelines can be guaranteed, in addition, pressing can be conducted after the transversely-arranged pipelines and the L-shaped pipelines are in butt joint, and the welding quality is guaranteed.

The L-shaped rib plate unit assembling equipment comprises an assembling platform used for positioning an L-shaped rib plate unit, walking rails are arranged on the two sides of the assembling platform, multiple sets of material frames are further arranged between the walking rails on the two sides, and the multiple sets of material frames are arranged at intervals along with the assembling platform. The surface of the walking track is slidably connected with a positioning assembly trolley and a plurality of material lifting trolleys; the positioning assembly trolley is of a double-main-beam structure and comprises a first main beam and a second main beam, the first main beam comprises a first cross beam, a welding mechanical arm is slidably connected to one side of the first cross beam, a plurality of clamping mechanisms are arranged at the bottom of the first cross beam at intervals, and a plurality of pressing mechanisms are arranged in the first cross beam at intervals; and a plurality of material lifting mechanisms are arranged at the bottoms of the second main beam and the material lifting trolley. According to the invention, the assembling process of the L-shaped ribs is equipment, and the plurality of L-shaped ribs can be synchronously positioned and assembled, so that the construction efficiency is improved while the cost is saved; and the positioning and assembling precision is high, so that the welding quality of the L-shaped rib plate unit is improved.

The invention provides a machining method of a light guide rod with a coated end face. The machining method comprises the steps that a first side face and a second side face which are adjacent to each other are polished; with the first side face and the second side face as the benchmark, the blank piece is fixed to an optical cement disc, and the two end faces of the blank piece are machined to obtain finished product end faces respectively; the two finished product end faces are coated to form coated finished product end faces, and end face protection pieces are arranged on the coated finished product end faces at the two ends; processing the third side surface to obtain a third finished product side surface and processing the first side surface to obtain a first finished product side surface; side surface protection pieces are arranged on the third finished product side surface and the first finished product side surface; and processing the fourth side surface to obtain a fourth finished product side surface and processing the second side surface to obtain a second finished product side surface. The problems that in the prior art, the machining cost of a light guide rod is too high, and efficiency is very low are solved.

The utility model belongs to the technical field of clamps, and particularly relates to a tool for machining a hole site in a first shaft bearing cap, the tool comprises a first positioning device, the first positioning device comprises a top plate, a bottom plate and a connecting column, the top plate and the bottom plate are arranged at an interval, the connecting column is connected with the top plate and the bottom plate, and a positioning hole and a plurality of through holes are formed in the top plate; the second positioning device is arranged on one side of the first positioning device, and the second positioning device comprises a clamp. The positioning opening in the end cover of the one-shaft bearing cover is aligned with the positioning hole in the top plate, a drilling tool penetrates through the through hole to machine a hole site in the end cover of the one-shaft bearing cover, according to the machining mode, due to the fact that punching is conducted on the face close to the end cover, the perpendicularity can be guaranteed, the drilling tool is installed on a clamp, and the drilling tool is installed on the clamp. The oil outlet hole is machined in the sleeve of the first-shaft bearing cover through the drilling tool, and due to the fact that the position of the first-shaft bearing cover does not need to be adjusted in the oil hole machining process, the machining process is more convenient.

The invention provides a water-jet guided laser processing system for sheet materials. The water-jet guided laser processing system comprises a laser; a spectroscope; a focus lens; a water guide processing head; the to-be-machined thin plate is subjected to water-guided laser cutting machining through water jet; the array porous supporting thin plate is attached to the bottom of the to-be-machined thin plate from the bottom direction, and an integrated supporting structure is formed for the to-be-machined thin plate; the first clamp is used for clamping the thin plate to be machined and the array porous supporting thin plate from the upper surface of the thin plate to be machined and the lower surface of the array porous supporting thin plate; and the drainage device is positioned below the array porous supporting thin plate. Thin plate deformation control and water flow control of a water guide laser system are achieved by optimizing the thin plate supporting design, the direction and strength of water flow are accurately controlled, interference of water flow to the thin plate is reduced, the cooling effect and the laser transmission mode are improved, deformation and displacement of thin plate materials are effectively restrained, and the machining precision, stability and surface quality are improved. The problems that in the prior art, thin plate machining precision is poor, and the surface is unstable are solved.

The invention discloses equipment for milling the end surface of a casting. The equipment comprises a double-sided milling machine, the transverse clamping mechanism comprises a tool base, a U-shaped clamping block is fixedly installed in the middle of the tool base, a supporting plate is fixedly installed at the top of the U-shaped clamping block, a blocking and pushing piece is installed between the two ends of the U-shaped clamping block in an up-down movable mode, and corresponding jacking blocks are installed on the two sides of the blocking and pushing piece respectively; the two sides of the tool base are each provided with a set of insertion holes, the longitudinal clamping mechanism comprises limiting rod pieces inserted into the insertion holes and a pressing oil cylinder arranged on the upper side of the tool base, and corresponding buffer springs are fixedly installed in the insertion holes in the bottoms of the limiting rod pieces respectively; and the feeding mechanism is used for conveying the workpiece to the position where the supporting plate of the transverse clamping mechanism is located. According to the clamping device, longitudinal and transverse clamping pre-tightening force can be synchronously formed on a workpiece, so that the clamping stability of a container corner fitting casting is enhanced.

The invention relates to the technical field of deepwater grouting, and particularly discloses an orifice pipe imbedding method and an orifice pipe buoy device under the deepwater condition. The orifice pipe buoy device comprises two symmetrically arranged buoyancy mechanisms and further comprises a connecting piece; the connecting piece comprises a rotating piece, an annular seat, an arc-shaped fixing piece and an elastic clamping piece; the two arc-shaped fixing pieces are detachably connected and fixed to the steel pipe. The elastic clamping piece is arranged on the inner side of the arc-shaped fixing piece; a second inclined surface is formed on the upper outer wall of the elastic clamping piece; the annular seat is detachably connected with the arc-shaped fixing piece; the rotating piece is in threaded connection with the annular seat; a first inclined surface is arranged on the inner side of the lower part of the rotating part; when the rotating piece moves downwards, the elastic clamping piece is hooped at the joint of the two steel pipes; the buoyancy mechanisms are detachably fixed to the connecting pieces, and the two buoyancy mechanisms define an annular cylinder. The problems that an existing buoyancy device has large resistance under water flow, and the perpendicularity of an orifice pipe cannot be ensured can be solved.

The utility model relates to the technical field of embedded steel bars, in particular to an embedded steel bar positioning device, which is matched with steel bars for use and comprises a positioning support, the positioning support comprises an annular support body, at least one positioning sleeve extending upwards is arranged on the support body, and the steel bars can be inserted into the positioning sleeves. According to the utility model, as each positioning sleeve extends upwards from the upper surface of the bracket main body, the perpendicularity of the reinforcing steel bar inserted into the positioning sleeve is ensured after the reinforcing steel bar is inserted into the positioning sleeve, and as the reinforcing steel bar is inserted into the positioning sleeve, the position of the reinforcing steel bar is limited and fixed through the positioning sleeve, so that the perpendicularity of the reinforcing steel bar is ensured. According to the steel bar positioning device, the effect of positioning the steel bar is achieved, and therefore the problems that in the prior art, manual straightening must be relied on, but the situation of position deviation is prone to occurring, and the perpendicularity of the steel bar is difficult to guarantee are solved.

A cast-in-place pile detection ruler comprises a measuring ruler body and a scoop net, the measuring ruler body comprises a plurality of groove rulers, the outer diameters of the groove rulers are sequentially increased, the groove rulers are arranged together in a sleeved mode through sliding structures, the sliding structures are arranged on the two sides of the groove rulers, and each sliding structure comprises a sliding groove and a sliding block which are sequentially arranged. The multiple groove rulers are arranged in a sliding and telescopic mode through sliding structures, and the scoop net is arranged in the innermost groove ruler in a downward sliding mode. Compared with a rope measuring method, the detection precision is improved, and compared with an over-filling prevention detector detection method, the detection procedures are reduced, and the detection cost is reduced; the concrete sampling detection device is convenient for sampling detection of concrete, reduces the detection operation difficulty, improves the detection accuracy, and has relatively strong portability and practicability.

The machining method comprises the following procedures that OP10, a workpiece is fixed to a first tool clamp, the workpiece is in a circular ring shape and is provided with an outer circular face, an inner circular face, a first side end face and a second side end face, the first side end face and the second side end face are located between the outer circular face and the inner circular face and are oppositely arranged, and the outer circular face serves as a clamping face; the first side end face serves as a positioning face, the workpiece is clamped, the second side end face is subjected to rough turning and finish turning, and the inner circle face is subjected to rough turning and finish turning; and OP20, the workpiece is fixed to a second tool clamp, the machined inner circle face serves as an expanding face, the machined second side end face serves as a positioning face, the workpiece is expanded, rough turning and finish turning are conducted on the first side end face, rough turning and finish turning are conducted on the outer circle face, and rough turning and finish turning are conducted on the spigot face. The problems that an annular workpiece is prone to deformation and manual clamping is not in place are solved, and the technical requirements for the parallelism of the two end faces of a product, the coaxiality of the inner circle and the outer circle, the perpendicularity of the end faces and an inner hole / outer circle and the like are met.

The utility model relates to the technical field of three-way pipe welding, and discloses a welding tool for a branch pipe and a main pipe of a three-way pipe. A placing assembly is fixedly installed on a clamping assembly, a power assembly is arranged in the placing assembly, two centering assemblies are symmetrically arranged on the two sides of the placing assembly, and the two centering assemblies are both connected with the power assembly; the centering assembly comprises a rotating rod, an L-shaped rod and a centering clamping plate, the rotating rod is rotationally installed in the placing assembly, the L-shaped rod is fixedly installed on the rotating rod, and the centering clamping plate is fixedly installed on the L-shaped rod; by means of the power assembly and the two centering assemblies, when a worker clamps a main pipe and a branch pipe through the welding tool, the branch pipe can be pushed to be perpendicular through the two centering clamping plates which are driven by the double-end motor and can be close to each other, the branch pipe is continuously supported in the process that the welding tool clamps the branch pipe, and the branch pipe is prevented from inclining.

The invention relates to the technical field of concrete strength detection, in particular to a concrete rebound apparatus for supervision, which comprises a rebound apparatus body, the rebound apparatus body is provided with a rebound apparatus shell, the rebound apparatus shell is internally provided with a central guide rod and a striking rod sleeved on the central guide rod, the concrete rebound apparatus further comprises a positioning frame, and the positioning frame comprises a horizontal positioning assembly and a horizontal positioning assembly, the limiting device is located in the positioning frame and comprises a limiting ring fixed in the positioning frame, the inner diameter size of the limiting ring is matched with the outer diameter of the rebound apparatus body, the limiting ring and the rebound apparatus body are coaxially arranged, the rebound apparatus body is sleeved with the limiting ring, and the rebound apparatus body is installed on the limiting ring in a guiding mode in the horizontal direction; the positioning supporting legs are located outside the positioning frame and used for abutting against the surface of a to-be-tested material when the resiliometer is used; the end portions of the ends, away from the positioning frame, of the multiple positioning supporting feet are flush with one another. The technical problem that in the prior art, a rebound instrument cannot guarantee perpendicularity, and consequently the measurement result is inaccurate is solved.

The present invention provides a waterproof pull-out resistant pile and a construction method, which relate to the technical field of pile foundation construction, and comprise a steel frame, wherein a plurality of bent steel bars with ends away from the axis of the steel frame are arranged at the top of the steel frame, a waterproof layer is arranged outside the steel frame below the bent steel bars, a water stop plate sleeved outside the steel frame is arranged between the waterproof layer and the bent steel bars, and a concave surface facing the waterproof layer is arranged on the water stop plate to guide seepage away from the bent steel bars and the steel frame; a foundation bottom plate wrapped with the water stop plate and the bent steel bars is arranged above the waterproof layer; in view of the problem that the waterproofness and corrosion resistance of the pull-out resistant piles cannot meet the demand at present, a water stop plate and a waterproof layer are arranged on the steel frame, and the concave surface structure of the water stop plate is utilized to guide seepage from under the waterproof layer, thereby blocking the seepage from surging to the position of the bent steel bars, and guiding the seepage to flow to the position away from the steel frame, thereby reducing the water content at the contact position of the steel frame, improving the waterproofness and thus improving the corrosion resistance.

The invention relates to a stable grounding rod mounting and positioning support which comprises a grounding rod and a base, a clamping disc is mounted on the base and is of a shell structure with a cavity, a clamping device is mounted in the clamping disc, and the grounding rod sequentially penetrates through the clamping disc, the clamping device and the base; the clamping device comprises two gears, a toothed plate is meshed between the two gears, the toothed plate is opposite to the grounding rod in position, a chuck is installed at the end, close to the grounding rod, of the toothed plate, the other end of the toothed plate is rotationally connected with a threaded rod, and the threaded rod penetrates through the clamping disc and is in threaded connection with the clamping disc; the side, away from the toothed plate, of each gear is further engaged with a rack, the two racks are located on the two sides of the toothed plate and arranged in a vertically-crossed mode, one end of each rack penetrates through the clamping disc and is in sliding connection with the clamping disc, the other end of each rack is fixedly connected with a clamping rod, and the end, away from the corresponding rack, of each clamping rod is bent inwards to be in a hook shape. According to the invention, the conditions of hand vibration and hand injury by crashing can be avoided; and the installation verticality of the grounding rod can be ensured.

The invention discloses a static pressure pile perpendicularity detection method, which relates to the technical field of static pressure pile detection, and comprises the following steps: analyzing to obtain the horizontal offset between the upper and lower sections of a static pressure pile according to the circle center coordinates of the upper and lower sections of the static pressure pile; according to the horizontal offset between the upper section and the lower section of the static pressure pile and the circle center elevation of the upper section and the lower section, the slope rate between the upper section and the lower section of the static pressure pile is obtained through calculation, and the perpendicularity condition of the static pressure pile can be comprehensively evaluated through the two key parameters of the horizontal offset and the slope rate. The inclination rate comprehensively considers the height difference of the pile body in the vertical direction and the deviation of the pile body in the horizontal direction, the inclination degree of the pile body can be more visually reflected, a more comprehensive and accurate evaluation result is provided for static pressure pile perpendicularity detection, whether the pile body meets engineering requirements or not can be better judged, the measurement precision is improved, personal errors are reduced, and the accuracy of static pressure pile perpendicularity detection is improved. And the reliability and repeatability of the result are enhanced.

The invention provides an adjustable pile gripper and a pile driving barge. The adjustable pile gripper comprises a pile gripping mechanism, an adjusting mechanism and a driving mechanism, wherein the pile gripping mechanism is used for clamping a tubular pile; the triangular connecting structure comprises a connecting arm which is vertically arranged, and the connecting arm is used for being connected with a pile embracing mechanism; the triangular connecting structure is used for adjusting the angle of the connecting arm in the vertical direction so as to adjust the perpendicularity of the pipe pile. The horizontal adjusting mechanism comprises a telescopic arm, one end of the telescopic arm is used for being connected with a ship, and the other end of the telescopic arm is connected with the triangular connecting structure; the horizontal adjusting mechanism is used for adjusting the position of the pipe pile on the horizontal plane. According to the adjustable pile gripper and the pile driving barge, the defects that offshore pile driving guide equipment cannot move, and the construction efficiency is low can be overcome, the installation accuracy and the installation efficiency of pipe piles are greatly improved, and application and popularization are facilitated.

The invention discloses an integral floating construction method for a fore shaft steel pipe pile cofferdam and a drilling platform, which is suitable for the construction of a bridge pile foundation deeply buried in bare rock, and comprises the following steps of: 1, processing the fore shaft steel pipe pile cofferdam capable of floating and the drilling platform which has buoyancy and takes a steel casing as a support on a dock; secondly, water is injected into the dock to float the machined fore shaft steel pipe pile cofferdam and the drilling platform which can be transported in a floating mode, and the floating fore shaft steel pipe pile cofferdam and the drilling platform are dragged to a construction site; thirdly, the floating fore shaft steel pipe pile cofferdam and the drilling platform are positioned and sunk to the leveled bare rock; fourthly, the posture of the fore shaft steel pipe pile cofferdam is adjusted, bottom sealing concrete is poured, and pile foundation construction is conducted after the bottom sealing concrete is poured; and fifthly, after pile foundation construction is completed, cofferdam structure water pumping is carried out, after water pumping, bearing platform and other main body structure construction is carried out, and after the main body structure goes out of water, water returning is carried out layer by layer in the cofferdam, and supports are dismantled.

The invention relates to the technical field of quartz product machining equipment, in particular to a quartz claw type product welding jig and a welding method thereof. The concentric shaft clamping assembly is arranged on the workbench and used for enabling the shaft rod to be in a vertical state; the Z-axis lifting sliding table is used for adjusting the position of the shaft rod in the vertical Z-axis direction; the supporting claw clamping assembly is used for clamping the supporting claw; the X-axis and Z-axis sliding table is used for driving the supporting claw to be close to or away from the shaft rod in the horizontal X-axis direction and driving the supporting claw to move in the vertical Z-axis direction so as to adjust the welding position of the supporting claw and the shaft rod. According to the clamping device, the supporting claw clamping assemblies are arranged, then the Z-axis lifting sliding table is arranged, and the shaft rod is rotatably arranged, so that the universality of the clamping device is effectively improved.

The invention belongs to the technical field of cofferdam construction control, and particularly discloses a sinking construction control method for a deepwater bare rock geology bottom-sealing-free double-wall steel cofferdam, which comprises the following steps: collecting bare rock characteristic data and water body characteristic data of a construction area, and collecting cofferdam information including size, shape, weight and surface roughness; an auxiliary sinking mode switching position is confirmed, and an initial construction time period is confirmed; state information in the sinking process is monitored in real time, sinking adjustment judgment is conducted, when the judgment result is adjustment, current adjustment sinking information is confirmed, and when the judgment result is not adjustment, sinking continues to be executed; and controlling the sinking construction process of the steel cofferdam, and returning to the previous step while implementing control measures until the cofferdam is mounted. According to the method, the hydrological characteristics and the change conditions of the construction water area can be comprehensively mastered, meanwhile, multi-link linkage control is achieved during sinking adjustment, and the construction efficiency and the construction accuracy of the cofferdam are greatly improved.

The invention provides a dynamic penetrometer, and relates to the technical field of measuring instruments. The dynamic penetrometer comprises a guide pressurization table, a driving hammer, a detection rod and a power transmission assembly. The guide pressurizing table is used for applying lateral constraining force and top pressure to a soil layer to be measured, and the guide pressurizing table comprises a first guide hole; the driving hammer is used for applying impact force to the detection rod and comprises a second guide hole; the detection rod vertically penetrates through the first guide hole and the second guide hole; the power transmission assembly comprises a supporting frame and a lifter, the supporting frame is used for supporting and limiting the power transmission assembly, and the lifter is used for providing lifting power for the driving hammer. When the to-be-detected soil layer is detected, the lifter lifts the driving hammer to a preset height and releases the driving hammer, so that the driving hammer freely falls and applies impact force to the detection rod, and the to-be-detected soil layer is detected according to the falling depth of the detection rod and the number of hammering times. According to the technical scheme, the accuracy of the dynamic penetrometer in the detection process can be improved.

The utility model discloses a concrete setting quality detection device, which relates to the technical field of concrete detection and comprises a fixed support, a mounting support is arranged in the middle of the fixed support, a sliding groove is formed in the middle of the front end of the mounting support, a second sliding block is arranged in the middle of the sliding groove, and a lead screw is arranged in the middle of the second sliding block. A rotating handle is arranged on the outer wall of one side of the mounting support, two lifting movable frames are arranged at the front end of the second sliding block, third sliding blocks are arranged in the middles of the two lifting movable frames, a fixing ring is arranged between the outer walls of the two third sliding blocks, and a rebound apparatus is arranged in the middle of the fixing ring. According to the concrete setting quality detection device disclosed by the utility model, people can conveniently position the rebound apparatus and detect a specified point, the detection result is more reference, people do not need to hold the rebound apparatus by hand, and the rebound apparatus is always kept vertical to the surface of concrete.

The invention discloses a single pile, tripod and suction pile combined fan foundation structure, the single pile, tripod and suction pile combined fan foundation structure comprises a central stand column and a lower support, an inclined strut is connected between the lower support and the central stand column, a connection reinforcing section is arranged between the inclined strut and the central stand column, the lower support is connected to the suction pile, and the lower support is connected to the suction pile. The suction piles are inserted into seabed soil, so that the central stand column is stably arranged on the seabed; steel pipe piles are inserted into the center stand column, one ends of the steel pipe piles are connected with fans, and the ends, away from the fans, of the steel pipe piles are inserted into seabed soil so that the fans can be stably arranged on the sea. According to the single pile, tripod and suction pile combined fan foundation structure, the tripod structure is stably placed on the seabed at the preset position through the lifting appliance, then all the suction piles penetrate into the soil body and reach the designed depth, it is guaranteed that the overall perpendicularity and levelness meet the design requirement, and the construction efficiency is improved. And the steel pipe pile is hoisted to penetrate through the center stand column till the bottom end to be inserted into seabed soil.

The invention belongs to the technical field of early warning and deviation correction for lowering inclination of a steel cofferdam, and relates to an early warning and deviation correction system and method for lowering inclination of a deepwater double-wall steel cofferdam without a sealing bottom. According to the method, by evaluating the potential influence of the environment where the target double-wall steel cofferdam without the back cover is located, inclination, caused by environmental factors, of the double-wall steel cofferdam without the back cover in the lowering process is reduced, and it is also avoided that constructors work in the dangerous environment; the inclination reason is analyzed in a multi-dimensional manner by judging the inclination early warning requirement and the inclination correction requirement of the target bottom section of the double-wall steel cofferdam without the back cover and the current heightening section as well as the inclination early warning requirement and the inclination correction requirement of the target bottom section of the double-wall steel cofferdam without the back cover when the target bottom section of the double-wall steel cofferdam is put down at present; whether the bottom section of the steel cofferdam is abnormally inclined or not can be conveniently perceived at the first time, constructors are reminded to take measures, serious safety accidents such as structural damage and even collapse caused by excessive inclination of the steel cofferdam are avoided, and damage to the structure of the steel cofferdam due to inclination of the bottom section is also avoided.

The present invention discloses a bored pile drilling positioning device, which relates to the field of foundation pile construction, including a casing that is centrally arranged and used for a pile driver drill rod to pass through, the top of the casing is connected to a support pedestal, the support pedestal is provided with a passage opening that is communicated with the casing and used for the drill rod to pass through; a correction mechanism that is movably arranged and used for correcting and adjusting the drill rod is installed on the top of the support pedestal; a movable guiding mechanism that is used for guiding and positioning the drill rod is installed above the correction mechanism; a centrally arranged supporting and limiting steel sleeve that is used for the drill rod to pass through and support and limit the drill rod is installed above the movable guiding mechanism. The device can not only guide the drill rod during the foundation pile drilling process, but also can timely remind and alarm the on-site construction personnel that the vertical inclination of the drill rod exceeds the standard, so as to facilitate timely "correction in motion" and thus ensure the quality of the pile foundation hole.

The invention discloses a thin stainless steel plate fin type heat dissipation core body machining method. The method comprises the steps of heat dissipation core body brazing structure design, heat dissipation core body part preparation, heat dissipation core body assembly, heat dissipation core body test welding, heat dissipation core body brazing parameter correction and formal brazing implementation, multiple heat dissipation core body connection and heat dissipation core body hot shape correction. According to the difference between the length or the width and the height of the heat dissipation core body, the thin stainless steel plate fin type heat dissipation core body can be divided into two, three and even more heat dissipation core bodies with the reduced height, so that the stability of the heat dissipation core bodies in the brazing process is guaranteed, and the heat dissipation core bodies are connected in series according to the weldability characteristic. Connection can be conducted in a fusion welding mode, a brazing mode and the like, the brazing parameters of the single heat dissipation core body are corrected when brazing is conducted, deformation is controlled in cooperation with a brazing clamp, and finally hot shape correction stress removal and brazing repair are conducted. The problems of brazing collapse, heat dissipation core deformation, low sealing qualification rate and the like in the machining process of the thin stainless steel plate fin type heat dissipation core are solved.