224 results about "Circumferential rings" patented technology

The invention discloses wall crack repairing equipment and method. The equipment is provided with a swing block, a rotating motor is installed at the outer side end of the swing block, an output rod is hinged to the output end of the rotating motor, and the other end of the output rod is connected with a grouting rod; a plurality of grouting pipes are arranged in the grouting rod, and a slurry coating plate is arranged between the grouting rod and the output rod; a liquid box is arranged at the rear side end of the slurry coating plate, the slurry injection rod is rotationally installed on the slurry coating plate, and one end of the slurry injection pipe communicates with the liquid box. The liquid box is connected with an external liquid supply pump; an annular pasting groove is formed in the front side end of the pasting plate, a plurality of spraying openings are formed in the bottom in the pasting groove, and the spraying openings are connected with the liquid box through pipelines; a slurry coating block is arranged in the slurry coating groove, and the slurry coating block can circumferentially surround the axis of the grouting rod; and the paste coating block is driven by a driving mechanism in the paste coating plate to rotate, so that uniform coating of the repairing liquid is realized. The labor intensity can be relieved, and higher smearing quality is achieved.

The utility model discloses a wear-resistant belleville spring, relates to the technical field of belleville springs, and aims to solve the problems that in the prior art, when a plurality of traditional belleville springs are combined for use and bear load for buffering, friction can be generated among the plates, so that the belleville springs are worn, the service life is shortened, and the maintenance cost is increased. The outer side of the center column is sleeved with a plurality of belleville spring sets, each belleville spring set comprises a first belleville spring body and a second belleville spring body, the first belleville spring bodies and the second belleville spring bodies are both conical disc-shaped plates, the large-diameter end faces of the first belleville spring bodies and the large-diameter end faces of the second belleville spring bodies face each other, and the large-diameter end faces of the first belleville spring bodies and the large-diameter end faces of the second belleville spring bodies face each other. A plurality of compression springs are arranged between the first belleville spring body and the second belleville spring body and annularly distributed along the circumference of the center column, and an upper fixing seat is fixedly mounted above the compression springs and fixedly connected with the first belleville spring body.

The invention discloses an intelligent spraying and curing device for high pier column concrete and an operation method. The intelligent spraying and curing device is characterized in that a top ring water pipe is arranged at the top of a stand column, a bottom ring water pipe is arranged at the bottom of the stand column, a plurality of circumferentially-surrounding vertical water pipes are arranged outside the stand column, and the vertical water pipes, the top ring water pipe and the bottom ring water pipe communicate with one another; meanwhile, a plurality of sprayers A are installed on the lower side of the top ring water pipe, a plurality of hygrometers are installed on each vertical water pipe from top to bottom, a plurality of sprayers B are installed on the top of the stand column on the upper portion of each vertical water pipe, and a plurality of sprayers C are spirally installed on the vertical water pipes from bottom to top; moreover, a sealing cover which covers the stand column, the top ring water pipe, the plurality of vertical water pipes and the bottom ring water pipe together from top to bottom is arranged outside the stand column, and sand gravels are covered between the bottom of the sealing cover and the top surface of the bearing platform to form closed and permeate part of falling vaporific water drop particles; therefore, the invention has the advantages of simple structure, safety, economy, convenience in construction, energy conservation, emission reduction and the like, and has the advantages of energy conservation, emission reduction and high economic benefit.

The invention relates to the technical field of cleaning, and particularly discloses a full-automatic cleaning device for a workpiece cavity, which comprises a cleaning box, a swing arm, a first cylinder and an air injection seat, one side surface and the top surface of the cleaning box are open; placing plates are installed on the inner walls of the two symmetrical sides of the top of the cleaning box, a workpiece is located between the two placing plates, the top faces of the placing plates are used for placing the bottom face of a peripheral circular ring of the top of the workpiece, and pressing assemblies used for pressing the workpiece to the top faces of the placing plates are installed on the placing plates; a hinge block is mounted on the inner wall, close to one placement plate, of the cleaning box, one end of the swing arm is rotationally connected into the hinge block through a hinge shaft, and a driving mechanism for driving the swing arm to rotate around the hinge shaft is mounted on the outer wall of the cleaning box; the first air cylinder is installed at the other end of the swing arm through a plate, the end of a piston rod of the first air cylinder is connected with an installation plate, the air injection base is installed in the installation plate, and three air blowing pipes are evenly installed around the top face of the air injection base. The device has the effect of improving the product machining quality.

The invention discloses an anti-scouring system for an offshore pile foundation, belongs to the technical field of offshore pile foundations, and can solve the problems that in the prior art, the installation difficulty is large, and the adaptability to the marine environment is poor. The system comprises a plurality of spoilers which are annularly distributed in the circumferential direction of the pile foundation. The horizontal plane projection of the spoiler is in a symmetrical sharp corner shape, the spoiler comprises a sharp corner end and a diffusion end which are opposite to each other, the sharp corner end is elastically connected with the pile foundation and can vertically swing under the action of ocean current, and the diffusion end overhangs in the direction away from the pile foundation; the center axis of the spoiler intersects with the axis of the pile foundation, and the sharp corner end is higher than the diffusion end. The spoiler is provided with two wing plates which are symmetrically distributed along the central axis of the spoiler, and the section of each wing plate on the section perpendicular to the central axis is in a concave arc shape. And a gap is formed between the diffusion ends of the adjacent spoilers. The anti-scour protection device is used for anti-scour protection of the offshore pile foundation.

The present disclosure provides electroporation systems and methods of energizing a catheter for delivering electroporation. A catheter for delivering electroporation includes a distal section and an electrode assembly. The distal section is configured to be positioned in a vein within a body. The vein defines a central axis. The electrode assembly is coupled to the distal section and includes a structure and a plurality of electrodes distributed thereabout. The structure is configured to at least partially contact the vein. Each of the electrodes is configured to be selectively energized to form a circumferential ring of energized electrodes that is concentric with the central axis of the vein.

A device for arranging a seal is proposed. The device comprises a partially circumferential ring arrangement. The ring arrangement has a partially circumferential channel on one end face. The partially circumferential channel is designed for arrangement on an end face of a stator. The device further comprises a plurality of webs. The plurality of webs extends radially inward from the ring arrangement by at least 1 cm. One web of the plurality of webs has a tapered shape. The device is formed as a single piece.

The invention provides an axial plunger pump with vibration reduction and clearance self-adaptive adjustment functions, which comprises a plunger cylinder body assembly, and the plunger cylinder body assembly is composed of a plunger, a cylinder body, magnetorheological fluid, a permanent magnet plunger barrel and a plunger hole; a cavity is formed between the inner wall and the outer wall of the plunger, the cavity is filled with the magnetorheological fluid, and the magnetorheological fluid can freely flow in the cavity; under the action of external magnetic force, the magnetorheological fluid has a chain structure; the plunger holes are formed in the cylinder body in a circumferential surrounding manner, and the plunger holes are used for accommodating the permanent magnet plunger barrel and the plunger; the permanent magnet plunger barrel is detachably fixed on the cylinder body; the plunger is embedded into the permanent magnet plunger barrel, and the permanent magnet plunger barrel is in clearance fit with the plunger; by arranging the plunger, the permanent magnet plunger barrel and the magnetorheological fluid, the viscosity of the magnetorheological fluid is changed under the action of a magnetic field to increase damping force, meanwhile, the magnetorheological fluid flows to enable the plunger to adjust the gap between the plunger and the cylinder body in a self-adaptive mode, and eccentric wear is avoided.

A tri-fold recyclable compact base including a pan receiving portion having an inner ring and an outer ring, the inner ring or the outer ring including at least one catch, and the inner ring configured to removably receive a cosmetics pan, a pan securing portion, the pan securing portion including a top flange and an inner ring extending perpendicularly from the top flange and an outer ring extending perpendicularly from the top flange, the inner ring or the outer ring including at least one circumferential ring configured to mate with the at least one catch, a first hinge rotatably connecting the pan receiving portion and the pan securing portion, a mirror receiving portion, and a second hinge rotatably connecting the mirror receiving portion and the pan securing portion.

The invention relates to the technical field of tunnel engineering, in particular to a variable-diameter soft soil cutterhead with a circumferential ring and a full-face tunnel boring machine. The cutterhead comprises a cutterhead middle part, and the cutterhead middle part comprises a center cylinder, a spoke arm and a first telescopic connecting device; the first end of the spoke arm is fixed to the center cylinder, the second end of the spoke arm is detachably connected to the first telescopic connecting device, a center cutter is arranged on the center cylinder, and a first cutter assembly is arranged on the spoke arm. The cutterhead telescopic part is detachably connected to the first telescopic connecting device and located at the end back to the spoke arm, and a second cutter assembly is arranged on the cutterhead telescopic part; the circumferential ring is detachably mounted on the cutter head telescopic part and located at the end, opposite to the spoke arm, of the cutter head telescopic part, and an annular part advancing cutter is arranged on the circumferential ring. The technical problem that in the prior art, when the diameter of the cutterhead needs to be changed, irreversible transformation needs to be conducted on the cutterhead or remanufacturing needs to be conducted on the cutterhead is solved.

The utility model belongs to the technical field of pitching machines, and particularly relates to a pitching wheel and a multi-wheel pitching machine, the pitching wheel comprises an inner wheel frame, the periphery of the inner wheel frame is provided with a circle of wheel frame part, the peripheral wall of the wheel frame part is concavely provided with a circle of accommodating groove, and two opposite side walls of the accommodating groove are respectively provided with a plurality of insertion holes along the circumferential direction; a plurality of penetrating columns are annularly arranged on the two opposite side walls of the outer wheel frame in the circumferential direction of the outer wheel frame, the outer wheel frame is connected to the containing groove in a matched and sleeved mode, and the penetrating columns are connected with the penetrating holes in an inserted mode in a one-to-one correspondence mode; and the multiple penetrating columns are inserted into the multiple penetrating holes in a one-to-one correspondence mode, it is guaranteed that the outer wheel frame is not prone to falling off or exploding, sports personnel are prevented from being injured, and the use safety is improved. The ball serving wheels can rub the ball surfaces of the balls at the ball serving positions at different rotating speeds, so that the balls are pushed to be shot outwards, various different changing balls are shot, the interest of training ball playing and ball receiving wanted by players is met, the training effect wanted by trainers is achieved, and the skill of the balls is improved.

The invention discloses a car roof trunk capable of taking off and landing an unmanned aerial vehicle. The car roof trunk comprises a cabin body; the inner enclosure is arranged in the cabin body; the inner enclosure divides the space in the cabin body into a part mounting chamber and a storage lifting chamber; the control box and the battery assembly are arranged in the part mounting cavity; the first gear box assembly is arranged in the part mounting cavity; the first transmission assembly is connected with the first gearbox assembly; the cabin cover assembly is arranged on the cabin body and connected with the first transmission assembly; the second gearbox assembly is arranged in the part mounting cavity; the second transmission assembly is connected with the second gearbox assembly; the centering rod assembly is arranged below the inner enclosure and connected with the second transmission assembly; and the falling weight is arranged on the inner bottom surface of the storage lifting chamber. According to the technical scheme, the luggage box does not need to occupy the space in the vehicle during installation, can serve as a lifting platform of the unmanned aerial vehicle and can store objects in the space in the luggage box, and the space utilization rate of the luggage box is increased.

The utility model provides hotel reception calling equipment based on the Internet, which relates to the technical field of calling equipment and comprises an equipment body. The equipment body is provided with a beeper shell, annular grooves with threads are formed in the front end and the rear end of the outer circumference of the beeper shell, three front-back-through rotating grooves are formed in the middle of the outer circumference of the beeper shell in an annular array mode, and a shielding protective cover is installed on the outer circumference of the front portion of the beeper shell through threads. Threads are arranged on the inner circumference of the rear portion of the shielding protective cover, and three rotating grooves are formed in the outer circumference of the rear portion of the shielding protective cover in an annular array mode, so that the shielding protective cover is conveniently installed on the beeper shell through the threads, and shielding and dust prevention are conveniently conducted on the sound net position of the beeper shell through the shielding protective cover. The problems that no protection measure is taken on the calling equipment, dust easily enters the equipment from a sound net, and shielding measures are inconvenient to add on the calling equipment to shield and prevent dust on the calling equipment are solved.

The utility model discloses a large rotary kiln cylinder sectional type processing and assembling device which divides a rotary kiln cylinder into a first cylinder and a second cylinder, supporting assemblies are detachably arranged at the positions, close to the inner portions of the ends, of the two ends of the sectional cylinder, center shafts of the two supporting assemblies are connected with a driving mechanism through bearings, and the driving mechanism drives the sectional cylinder to rotate. A butt-joint assembly is fixedly arranged on the inner wall circumference of the end of the butt-joint position of the two sections of segmented barrel bodies in the circumferential direction, and the first barrel body and the second barrel body are assembled in a butt-joint mode through the butt-joint assembly and welded into the whole rotary kiln barrel body. The device is scientific and reasonable in design, the large rotary kiln barrel is machined in a segmented mode, and multi-directional flexible machining is provided for the large rotary kiln barrel; and meanwhile, the concave flange and the convex flange which are matched with each other are arranged on the inner walls of the butt joint ends of the segmented barrel bodies, so that the centering butt joint positioning accuracy during assembly of the segmented barrel bodies is improved, the overall assembly production efficiency of the large rotary kiln body is improved, and normal and safe operation of the rotary kiln is guaranteed.

The utility model discloses a circumferential sprue three-plate mold point glue feeding structure of a cylindrical powder metallurgy product. The circumferential sprue three-plate mold point glue feeding structure comprises a glue injection runner, a circumferential side sprue arranged at a port of the glue injection runner, and a transition part which is arranged at the center bottom end of the circumferential side sprue and extends downwards, the peripheral side gate comprises an upper plane part, an inclined ring surface part arranged on the periphery of the upper plane part and a lower plane part positioned below the upper plane part, a port of the glue injection runner is correspondingly butted with the center of the upper plane part, and a peripheral gate corresponding to a cavity of a molded product is formed in the peripheral directions of the inclined ring surface part and the lower plane part. And the transition part is correspondingly butted with the center of the lower plane part. According to the utility model, the rotary circumferential ring side glue feeding mode of point glue feeding is changed, and the problem of black lines on the appearance surface of a product is avoided.

The invention relates to a device and a method for retarding hydrogen metallurgy bonding and flow loss of a fluidized bed. The device comprises the fluidized bed, a central gas distributor, a circumferential annular gas distributor, a circumferential circular seam gas distributor, a central gas channel, a circumferential annular gas channel, a circumferential circular seam gas channel, a pulse generator a, a pulse generator b and a pulse generator c, wherein the wave crest of the pulse generator b connected with the circumferential annular gas channel corresponds to the wave trough of the pulse generator a and the wave trough of the pulse generator c, hydrogen is blown in a pulse mode, so that solid particles in the fluidized bed continuously vibrate, contact points are damaged, the bonding phenomenon can be obviously relieved, and meanwhile, a part of bonding particles can be cracked through pulse gas flow vibration; therefore, contact of particle contact interfaces during reduction is slowed down, and the phenomenon of hydrometallurgy bonding and flow loss of the fluidized bed is slowed down.

The utility model relates to the technical field of OB acid production, in particular to a convenient-to-discharge hydrolysis kettle for OB acid production and processing, which comprises a vertical reaction kettle body, a bottom discharge valve is mounted at the bottom of the vertical reaction kettle body, and a plurality of side discharge ports which are sequentially staggered from top to bottom are formed in the side wall of the vertical reaction kettle body. A plurality of side discharge ports are formed in the vertical reaction kettle body, a rotary sleeve which is hermetically and circumferentially surrounded on the vertical reaction kettle body is arranged outside the plurality of side discharge ports, a plurality of side discharge pipes which can be communicated with the plurality of side discharge ports one by one are fixedly communicated with the outer part of the rotary sleeve, and side discharge valves are fixedly mounted on the plurality of side discharge pipes. And the discharging accuracy is high, the discharging speed is high, and the production efficiency of the OB acid is further improved.

The utility model relates to a kind of hydraulic oil cylinder cylinder barrel inner wall cleaning equipment, including support frame, electric push rod, water tank and cleaning disc are sequentially installed from left to right on support frame;The output shaft of the electric push rod top is installed with the lifting plate extending to right, and the downside rotationally connected with cleaning cylinder at the right end of lifting plate;The outer circumferential ring of the cleaning cylinder is provided with multiple spray heads;Still including driving motor, screw rod, lifting frame, connecting plate, telescopic link, articulated rod, scraper and sponge block;The clamping assembly for fixing cylinder barrel is slidably connected on the cleaning disc. Through the cooperation of clamping assembly and lifting frame on cleaning cylinder, the cylinder barrel of different barrel diameter can be adapted, so that the scraper and sponge block on connecting plate can be contacted with the inner wall of cylinder barrel through linkage with lifting frame, and the inner wall of the cylinder barrel of different barrel diameter is quickly cleaned.

The utility model relates to the technical field of low-nitrogen combustors, and provides a low-nitrogen combustor internal pressure detection device which comprises a multilateral lantern ring assembly, a plurality of triangular turning plates and a force detection mechanism, the multilateral lantern ring assembly is fixedly arranged on one side, close to a ventilation pipeline, of a primary air pipe and a secondary air pipe, and the triangular turning plates are arranged on the multilateral lantern ring assembly. The multiple triangular turning plates are rotationally connected to the multilateral lantern ring assembly, the multiple triangular turning plates are arranged in the primary air pipe and surround the primary air pipe in a circumferential mode, the multiple side edge contact strength detection mechanisms of the adjacent triangular turning plates are arranged, and the multiple strength detection mechanisms are fixedly connected to the multilateral lantern ring assembly. By means of the technical scheme, the problem that in the prior art, when airflow flows unstably, the real gas pressure is difficult to measure is solved.

The utility model discloses a computer protective shell which comprises a frame and a decorative shell, and the frame is arranged in a surrounding mode in the circumferential direction of the decorative shell. A concave connecting step is arranged on the outer side wall of the frame, the connecting step is arranged around the inner edge of the frame, and the edge of the inner side wall of the decorative shell is detachably connected with the connecting step. According to the embodiment of the utility model, the decorative shell is detachably mounted on the outer side of the frame through the concave connecting step arranged on the outer side wall of the frame, so that the outer side edge of the decorative shell cannot be covered by the frame, the decorative shell can be completely displayed, the'black edge 'of the decorative shell is eliminated, and the service life of the decorative shell is prolonged. And the overall visual effect and the aesthetic degree of the computer protection shell can be improved.

The invention relates to an elution device for automatic nucleic acid extraction, which comprises an elution turntable, a rotating gear capable of rotating is arranged on the elution turntable, a fixed gear is annularly arranged on the periphery of the rotating gear, and a plurality of site gears are arranged between the rotating gear and the fixed gear; teeth on the plurality of site gears are respectively meshed with teeth on the rotating gear and teeth on the fixed gear, so that the site gears are driven by the rotating gear to rotate along the circumferential direction of the rotating gear and simultaneously rotate along the central axis of the site gears; a containing groove hole is formed in the site gear, and a sample tube containing a substance to be eluted is placed in the containing groove hole; the liquid injection mechanism comprises a liquid injection pipe used for outputting eluent, and the eluent can be added into the sample pipe located below the liquid injection pipe through the liquid injection pipe. The invention solves the technical problems of complex structure, tedious elution process, slow elution speed and high cost of an elution device in nucleic acid extraction.

The utility model belongs to the technical field of transmission tower bases, and particularly relates to a round tower foot plate of an angle steel tower for mechanical construction, which comprises a tower foot plate main body, a plurality of foundation bolt holes are annularly and uniformly formed in the circumferential direction of the tower foot plate main body, and a shoe plate for fixedly mounting the angle steel tower is arranged on the plate surface of the tower foot plate main body. The stiffening plates are arranged at the two ends of the shoe plate and fixed to the plate face of the tower foot plate body, the tower foot plate body is designed to be round, the tower foot plate body can be conveniently connected with an assembly type foundation of a lower steel structure in a flange connection mode, whole-process mechanical construction of a power transmission line is better facilitated, the construction period is shortened, and the construction cost is reduced; and the labor intensity is reduced.

The utility model discloses an underground deep shaft anti-corrosion fastener, which belongs to the technical field of deep stratum shaft corrosion prevention and comprises an upper shaft, a shaft fastener ring is fixedly arranged at the bottom of the upper shaft, a lower shaft is in threaded connection with the bottom of the shaft fastener ring, and four upper drainage pipes are arranged on the periphery of the outer side of the upper shaft in a surrounding manner. The tops of the four upper drainage pipes are connected with ground hydraulic equipment, anti-corrosion semi-fluid materials circulate in the upper drainage pipes, the interiors of the four upper drainage pipes communicate with the interior of the shaft fastener ring, and the interiors of the four upper drainage pipes communicate with the lower drainage pipes correspondingly arranged at the bottoms of the upper drainage pipes correspondingly. Corrosion-resistant semi-fluid materials are injected into the first threads and the second threads at the position of the shaft connector through the upper drainage pipes on the four sides of the upper shaft, micro gaps at the position of the shaft connector are blocked by expelling or isolating underground deep stratum corrosive inorganic chemical substances or fluid and the like, and finally the effects of isolating air or fluid and protecting the shaft are achieved.

The utility model discloses a bypass cable joint which comprises a core tube, an insulating sleeve, a shielding sleeve, a protective tube and the like, the insulating sleeve is coaxially nested on the outer side of the core tube, the shielding sleeve is arranged outside the insulating sleeve, an outer protective tube is sleeved outside the shielding sleeve, and the protective tube is sleeved outside the outer protective tube. The two sides of the outer protective tube are sleeved with shells extending to the outer sides of the shielding sleeves, pressing sleeves are arranged on the inner sides of the shells, and the portions, on the two sides of the outer protective tube, of the shielding sleeves are sleeved with locking springs outwards abutting against the pressing sleeves. A plurality of sets of taper holes with large openings facing outwards are formed in the outer circumference of the shell in a surrounding mode, and blocking balls extending to the inner side of the shell are arranged in the multiple sets of taper holes. The beneficial effects are that the cable joint suitable for bypass cable operation is researched and developed, the movable sleeve transversely moves to control the abutting state of the blocking ball in the taper hole, the cable joint can be rapidly locked and separated, the joint connection speed is improved, the use is convenient, the work amount of bypass cable operation can be reduced, and the operation time is saved.

The present disclosure relates to a crucible assembly including a ratio of gasket size to crucible size and ingot size in scintillator fabrication. A crucible assembly includes a crucible and an annular gasket. The crucible includes a body defining an interior volume configured to grow an ingot having an ingot diameter (Dboule). The body includes an outer wall extending to an inner wall. The outer wall has an outer circumference defining an outer wall diameter (ODwall) and the inner wall has an inner circumference defining an inner wall diameter (IDwall). An annular gasket is disposed at the crucible and includes an outer gasket edge defining an outer circumference and an inner gasket edge defining an inner circumference. The outer circumference defines an outer washer diameter (ODwash) and the inner circumference defines an inner washer diameter (IDwash). The optimized ratio of the inner washer diameter (IDwash) to the inner wall diameter (IDwall) is based on the ingot diameter (Dboule), the inner wall diameter (IDwall) and a target ratio parameter "Z".

A drum for storing and processing build material powder includes a cylindrical body having a plurality of circumferential rings and a plurality of internal baffles. The first end of the cylindrical body is sealed by a first cap that is tapered to an orifice. The second end of the cylindrical body is sealed by a second cap. A gas inlet configured to receive an inflow of an inert gas and a gas outlet configured to exhaust used gas from an interior of the drum.

The utility model discloses a low-noise tire, which comprises a tire crown, a tire tread, a tire tread, a tire tread, a tire tread, a tire tread, a tire tread and a tire tread, and is characterized in that the tire tread comprises a central area; the tire side bodies are arranged on the two sides, away from the central area, of the tire crown at intervals in the axial direction, and each tire side body comprises a tire shoulder; the first tire patterns are symmetrically arranged on the two sides of the central area in the axial direction; the multiple second tire patterns are symmetrically arranged between the first tire patterns and the tire side body in the axial direction, the second tire patterns are in an inclined triangular shape, one ends of the second tire patterns are arranged close to the tire shoulder in the axial direction, and the other ends of the second tire patterns extend towards the central area; and the multiple third tire patterns are symmetrically arranged on the tire shoulder in the circumferential direction. According to the utility model, the noise generated in the running process of the tire can be effectively reduced, and the comfort of a driver and passengers is improved.

The utility model discloses a wharf logistics lifting installation module structure, a lifting jack and wharf lifting equipment in the technical field of crane lifting, and solves the problem of the disassembly and assembly efficiency of a crane. A logistics crane body is fixed to a wharf through a front platform assembly and a rear platform assembly. In the front platform assembly, two first hinge seats are fixed to the two ends of a first supporting seat correspondingly; a first fixing plate is annularly arranged on the periphery of the bottom of the first supporting base. The hoisting mechanism is arranged on the first supporting seat; a plurality of first jackscrew structures are arranged on the first fixing plate for leveling; the foundation bolt is fixed to a wharf through a first fixing plate. In the rear platform assembly, two second hinge bases are fixed to the two ends of a second supporting base respectively. A second fixing plate is annularly arranged on the periphery of the bottom of the second supporting base. The luffing mechanism is arranged on the second supporting seat; a plurality of second jackscrew structures are arranged on the second fixing plate for leveling; the foundation bolt is fixed on a wharf through a second fixing plate; the dismounting convenience and management of the crane are facilitated.

The utility model discloses a thin-wall insulation communication wire harness, which relates to the field of wire harnesses and comprises a core wire harness group, an insulation filling layer is arranged on the outer side of the core wire harness group, filler in the insulation filling layer is nitrile rubber, a plurality of communication wire rods are arranged on the outer side of the insulation filling layer, and the communication wire rods are distributed around the insulation filling layer circumferentially. The woven mesh protective sleeve is arranged on the outer side of the communication wire rod, the woven mesh protective sleeve is made of a high-density nylon woven mesh, the communication wire rod comprises a communication wire layer, an insulating layer, a metal mesh shielding layer and a protective layer, and the woven mesh protective sleeve is made of nylon fibers through tight weaving and provides extra protection for the wire harness, so that the wear resistance of the wire harness is improved; the metal net shielding layer is arranged in the communication wire rod to improve the anti-interference capability, and the protective layer on the outer side is made of a polyurethane material, so that the wear resistance of the wire rod is improved, and the service life of the wire rod is prolonged.