66 results about "Steel jacket" patented technology

The invention belongs to the technical field of integrated circuit testing, and particularly relates to a multi-station integrated circuit vibration testing device. Comprising a device body and further comprises a plurality of steel jackets, and the steel jackets used for installing testing clamps of different specifications are distributed on the four side faces and the upper surface of the device body respectively. The center of the upper surface of the device body is provided with the cylindrical groove cavity used for placing a sensor; and the locking screw holes are circumferentially distributed in the outer side of the cylindrical groove cavity, and the multiple locking screw holes penetrating to the lower surface are formed in the upper surface of the device body and used for locking and fixing the device body to a vibration table. According to the invention, a plurality of standardized steel sleeves are densely arranged on the side surface and the upper surface of the device body, so that the device can be simultaneously provided with a plurality of clamps with different specifications, thereby supporting the synchronous vibration test of integrated circuits with various packaging forms.

The utility model relates to the field of steel jacket steel thermal insulation pipe installation, in particular to a steel jacket steel thermal insulation pipe installation support which comprises a fixing base, a fixing base, a supporting base and a fixing base. The top end of the fixing base is provided with a sealing mechanism. Wherein the sealing mechanism is arranged on the base; according to the sealing mechanism, the two fixing rings are used for supporting and fixing the connecting position of the steel sleeve steel heat preservation pipe, the two bidirectional lead screws are sequentially rotated, and gas in the gas storage frame enters the two sets of arc-shaped gas bags and the two sealing gas bags under the action of the corresponding moving plates, the round rods and the extrusion plates, so that the gas bags are expanded; the arc-shaped air bags are arranged on the two sides of the fixing rings at intervals, a complete sealing ring can be formed to seal the connecting position of the two fixing rings and the connecting position of the two fixing rings and the steel sleeve steel heat preservation pipe, the influence of external moisture and moisture on the connecting position of the pipeline is avoided, the multiple arc-shaped air bags are arranged on the two sides of the fixing rings at intervals, multi-layer sealing is formed, the sealing effect is enhanced, and the service life of the pipeline is prolonged. And therefore, the protection effect on the connection part of the steel jacket steel thermal insulation pipe is improved, and the normal operation of the pipeline is ensured.

The utility model discloses a top layer column-clad steel reinforcing structure which comprises a column-clad steel body, a first reinforcing beam and a second reinforcing beam. The longitudinal angle steel at the corners of the column-clad steel main body upwards extends into the floor slab and is fixedly connected with the floor slab, and the first reinforcing beam is arranged on the top surface of the column-clad steel main body in a surrounding manner and is fixedly connected with the bottom surface of the beam body; the second reinforcing beam is arranged on the side wall of the column-wrapped steel main body in a surrounding manner and is fixedly connected with the bottom surface of the floor slab; and the first reinforcing beam and the second reinforcing beam are fixedly connected with the longitudinal angle steel of the column-clad steel main body respectively. The utility model relates to the technical field of building construction, and can solve the problem of lower strength of the joint of the column top and the beam bottom of the steel column in the prior art.

The invention discloses a local deepening foundation waterproof support construction method in a deep foundation pit. The method comprises the steps that the soil texture condition of a to-be-excavated land is obtained, and the foundation pit is excavated and leveled; after a first concrete cushion layer is poured at the bottom of the foundation pit, a cement mortar bonding layer is laid; installing a single-wall bottomed steel jacket box and then injecting water; concrete is poured on the outer wall of the single-wall steel jacket box with the bottom; a waterproof layer and a waterproof protection layer are arranged after a second concrete cushion layer is poured; binding foundation steel bars; an inner formwork is installed on the foundation steel bars in the single-wall bottomed steel jacket box; and foundation concrete is poured, and construction is completed. The invention relates to a construction method for a local deepening foundation waterproof support in a deep foundation pit, which effectively solves the problems of high difficulty, poor effect, long period and high cost of the traditional local deepening support construction of the deep foundation pit through a core technical scheme of a single-wall steel jacket box with a bottom, micro-expansion concrete filling, refined waterproof joints and synchronous construction.

The invention discloses a balance buffering self-floating type ship collision prevention device in the technical field of bridge pier ship collision prevention equipment, and particularly comprises a first steel jacket box and a second steel jacket box, the second steel jacket box is sleeved with the first steel jacket box, a plurality of rows of connection steel plates are distributed in the circumferential direction of the outer surface of the second steel jacket box, one end of each connection steel plate is fixed to the first steel jacket box, and the other end of each connection steel plate is fixed to the second steel jacket box. The other end is fixed with the second steel jacket box; each connecting steel plate comprises a bent plate, the bending direction of the bent plate is horizontal, and the bending direction of the bent plate is opposite to the bending direction of the bent plate in another longitudinally adjacent connecting steel plate. The anti-collision device can continue to keep the anti-collision capacity after being collided once, and the overall stability of the anti-collision device is maintained.

The utility model discloses an oil recharging mechanism for a steel jacket product, relates to the technical field of oil recharging mechanisms, and aims to solve the problems that an oil recharging lubricating mechanism in the prior art is too complex in structure and poor in oil spraying effect, and the production and processing cost is greatly increased. The oil recharging mechanism comprises a bin body, and a push rod motor is fixed to the inner wall of the top of the bin body; a connecting plate is fixed to the bottom of the push rod motor, and the end, away from the push rod motor, of the connecting plate is rotationally connected with an oil spraying assembly. When a product moves to the position below the oil spraying assembly on the conveying belt, the position of the product is calibrated through the infrared sensor, oil in the oil tank is conveyed into the oil spraying nozzle through the oil conveying pipe, the hose, the connecting pipe, the bottom shell, the fixing pipe and the oil outlet pipe to be sprayed out through the oil pump, and the oil spraying assembly is driven to move downwards in cooperation with downward extension of the push rod motor. Oil is sprayed to the product from top to bottom, the servo motor is matched to drive the oil spraying assembly to rotate through the gears meshed with each other, and oil is sprayed to the product in all directions.

A highly integrated high-power resistor comprising a high-power resistor integrated into a radiator, wherein the high-power resistor is designed to efficiently dissipate heat generated during sustained-action braking operations of an sustained-action brake, having a radiator housing, a stainless steel jacket, an insulating layer and at least a first electrical high-voltage connection and a second electrical high-voltage connection, wherein at least the high-power resistor, the stainless steel jacket and the insulating layer form a high-power resistor module.

The invention relates to a highly integrated high-power resistive device (100) comprising: a high-power resistor (108) integrated into a heat sink, the high-power resistor (108) being designed to efficiently discharge heat generated during a continuous braking process of a continuous braking device; the radiator is provided with a radiator shell (102); a stainless steel cover sleeve (104); the invention relates to a high-power resistor module (112) comprising a high-power resistor (108), a stainless steel cover (104), an insulating layer (106), and at least one first high-voltage electrical connection (110.1) and a second high-voltage electrical connection (110.2), at least the high-power resistor (108), the stainless steel cover (104) and the insulating layer (106) forming a high-power resistor module (112).

The utility model discloses a high -power electric heater for thick oil development, including stainless steel outer sleeve pipe, three heating cables and thermocouple sleeve pipe are sheathed in the stainless steel outer sleeve pipe, and thermocouple assembly is sheathed in the thermocouple sleeve pipe, and the end of stainless steel outer sleeve pipe is welded with sieve tube, and the end of sieve tube is connected with the pipe through the connecting ring away from stainless steel outer sleeve pipe, and the end of pipe is connected with the plug away from the connecting ring, and thermocouple sleeve pipe and three heating cables all pass sieve tube, connecting ring and pipe in proper order. The utility model heating part adopts stainless steel mineral insulation heating cable, and the heating is even, and the heating core wire adopts nickel chromium alloy, and the heat output is big, and the service life is long, and three stainless steel mineral insulation heating cable tail stars, and the electrical connection is convenient, and the electrical control system is simplified, and contains three thermocouples, can monitor the temperature change of three positions, adjusts voltage in time, guarantees that the heating temperature satisfies the requirement, and the heater tail has sieve tube, and the steam is convenient to flow out.

The utility model discloses a semi-automatic steel jacket feeding jig which comprises a die and a jig body capable of being connected with the die in an assembling mode, the die is provided with a steel jacket transfer needle, the jig body comprises a bottom plate, a top plate and a movable plate, the top plate is connected with the bottom plate through a guide column, and the movable plate is located between the top plate and the bottom plate and movably connected with the guide column. A sleeve is arranged on the movable plate, a trocar is arranged on the top plate, and the trocar penetrates through the sleeve. According to the semi-automatic steel sleeve feeding jig, when a steel sleeve is fed, the steel sleeve is firstly arranged on the sleeve needle in a penetrating mode, then the jig body is assembled on a die, the sleeve needle is in butt joint with the steel sleeve transfer needle, then the movable plate is pressed, the sleeve acts on the steel sleeve, the steel sleeve is pushed to the steel sleeve transfer needle from the sleeve needle, and therefore the steel sleeve is fed to the die; by means of the jig body, feeding of the steel jackets can be more convenient and simpler, the multiple steel jackets can be fed at the same time, then the feeding efficiency of the steel jackets can be improved, and the manual labor intensity and the labor cost are reduced.

The utility model discloses a node device with anti-seismic and self-resetting functions for a steel structure, which comprises a mild steel plate type spring, a first steel encircling sleeve mechanism, a second steel encircling sleeve mechanism, a third steel encircling sleeve mechanism and a triangular steel plate, and the first steel encircling sleeve mechanism, the second steel encircling sleeve mechanism and the third steel encircling sleeve mechanism are sleeved on a cross beam and a vertical column which are mutually orthogonal. The mild steel plate type spring is hinged to the first steel encircling sleeve mechanism and the second steel encircling sleeve mechanism, and the vertex angle of each triangular steel plate is connected with the first steel encircling sleeve mechanism, the second steel encircling sleeve mechanism and the third steel encircling sleeve mechanism. The joint is simple in structure and convenient and rapid to construct, the working efficiency is greatly improved, restoring force can be provided to enable the joint to have the self-resetting capacity in the deformation process of an earthquake, meanwhile, after the joint is restored to the normal state, the limiting plate plays a role of a pull rod to limit continuous excessive deformation of the joint, and therefore the joint has the good active anti-seismic function.

The invention relates to the technical field of nondestructive testing of pressure-bearing equipment, and discloses a jacket type phased array ultrasonic 0-degree longitudinal wave detection device which comprises a jacket, a phased array probe and an encoder, a through groove is formed in the center of the jacket, the phased array probe is embedded in the through groove, the bottom of the phased array probe is higher than the bottom face of the jacket, and the encoder is arranged in the through groove. A gap exists between the bottom of the phased array probe and the bottom surface of the jacket, and the encoder is connected to one side of the jacket. According to the phased array ultrasonic contact longitudinal wave detection device, the stainless steel jacket and the phased array probe are combined, so that the problem of wear failure caused by direct contact of the probe and a workpiece and interface wave interference caused by a traditional 0-degree organic glass wedge block are effectively avoided, the sound energy transmission efficiency is improved, and the detection precision is improved. The problem that 0-degree longitudinal wave detection of a large-thickness workpiece is not reliable is solved.

The present invention belongs to the technical field of powder metallurgy, and relates to a preparation method and application of a high-temperature alloy component with a complex structure that is easy to detect flaws. Coarse powder and fine powder are mixed as raw materials, and the mixed powder is pre-pressed by cold isostatic pressing to obtain a formed ingot blank. The formed ingot blank is placed in a steel jacket, and low-carbon steel powder is used to fill the voids in the steel jacket. After degassing and sealing welding treatment of the entire steel jacket, a component with a steel jacket is obtained by hot isostatic pressing. After heat treatment and machining treatment, a component with a steel jacket is obtained. After ultrasonic flaw detection of the component with a steel jacket, the target high-temperature alloy component is obtained through pickling and sandblasting treatment. The high-temperature alloy component prepared by the present invention has a high degree of tissue densification and good grain uniformity; through the preparation method of the present invention, the flaw detection difficulty of high-temperature alloy components with complex structures can be significantly reduced, the accuracy of flaw detection can be improved, and the problem of difficult machining of high-temperature alloy components can be effectively solved.

The surface-mounted high-speed permanent magnet rotor comprises an iron core, magnetic steel, an aluminum sleeve, a carbon fiber sleeve and aluminum end plates, the magnetic steel is attached to the periphery of the iron core in a surrounding mode, the aluminum sleeve is sleeved outside the magnetic steel, the carbon fiber sleeve is sleeved outside the aluminum sleeve, the aluminum end plates are arranged at the two ends of the iron core, and a plurality of screw holes are formed in the surfaces of the aluminum end plates in the circumferential direction. A balancing weight is arranged in the screw hole. According to the utility model, the aluminum sleeve is sleeved outside the magnetic steel, the carbon fiber sleeve is sleeved outside the aluminum sleeve, and the aluminum sleeve and the carbon fiber sleeve cooperate with each other to support the magnetic steel, so that the strength of the rotor is greatly improved, and the rotating speed of the rotor can reach 30000-50000 RPM; the outer circle of the rotor core is designed into a dodecagon with a boss in the middle, and the magnetic steel is designed into bread-shaped magnetic steel matched with the dodecagon boss. The magnetic steel is bonded on the 12-deformation iron core through epoxy glue, and the magnetic steel is axially divided into four sections, so that the loss of the magnetic steel is reduced.

The utility model relates to the field of steel jacket part machining, and discloses a steel jacket part rolling device which comprises a machine base, a bearing base is fixedly mounted at the top of the machine base, and an annular machining shell is fixedly mounted at the top of the bearing base; a rolling mechanism is arranged on the annular machining shell and comprises three hydraulic cylinders, three U-shaped frames, three rolling shafts and three first motors, the three hydraulic cylinders are fixedly installed on the outer wall of the annular machining shell and annularly distributed at equal intervals, and the output shaft ends of the three hydraulic cylinders extend into the annular machining shell. The device has the following advantages and effects that the cylinder sleeve type part can be stably positioned, displacement cannot occur in the rolling process, it can be ensured that stress is uniform and machining consistency is high in the rolling process of the cylinder sleeve type part, local stress concentration of the cylinder sleeve type part is avoided, and therefore the machining precision and the surface quality of the cylinder sleeve type part are improved.

The utility model relates to the technical field of hoisting appliances, in particular to an adjustable auxiliary device for hoisting a steel jacket box, which comprises a shell and a fixing component, a top cover is fixed at the top of the shell, the fixing component comprises a motor, a rotating shaft, a bidirectional threaded rod, a lantern ring and a chute frame, and the motor is fixed at the top of the top cover. An output shaft of the motor penetrates through the top cover and then is fixed to the top of the rotating shaft, a first bevel gear is fixed to the bottom of the rotating shaft, a set of second bevel gears are symmetrically arranged on the two sides of the first bevel gear, and the first bevel gear is meshed with the second bevel gears; the end, opposite to the first bevel gear, of the second bevel gear is fixed to the inner end of a two-way threaded rod, the outer end of the two-way threaded rod penetrates through and extends out of the shell, a sliding groove frame is arranged at the top of the two-way threaded rod, and the sliding groove frame is fixed to the outer wall of the shell. And the position of the clamping plate is limited, so that the steel jacket box is prevented from shaking randomly during hoisting.

The utility model provides a steel-in-steel ground bend which comprises an outer steel pipe, an inner steel pipe is arranged in the outer steel pipe, a heat preservation interlayer is arranged between the outer surface of the inner steel pipe and the inner surface of the outer steel pipe, symmetrically-distributed positioning grooves are formed in the two ends of the outer steel pipe, and symmetrically-distributed annular supporting pieces are arranged on the inner steel pipe in a sleeving mode. The annular supporting piece comprises a first connecting ring, a second connecting ring and a plurality of connecting columns located between the first connecting ring and the second connecting ring, positioning blocks which are symmetrically distributed are fixedly connected to the second connecting ring, and the second connecting ring is attached to the inner wall of the outer steel pipe; compared with traditional steel bar connection, by arranging the annular supporting piece, the supporting stability can be greatly improved, deformation can be better resisted, the supporting strength is higher, meanwhile, the heat preservation interlayer can achieve a good heat preservation effect on a medium conveyed by the inner steel pipe, noise generated when the medium is conveyed is reduced to a certain degree, and medium conveying is facilitated.

The utility model relates to the technical field of blanking devices, in particular to a blanking mechanism and a cutting device for machining aluminum and steel jackets. A sliding block is arranged on the push plate; the discharging mechanism has the beneficial effects that a first motor drives gears to rotate, all the gears are in meshing transmission to drive all the rotating rollers to rotate, products above the rotating rollers rotate along with the gears, chippings on the products fall into the discharging mechanism body, the chippings on the products are cleaned, a threaded rod rotates along a threaded hole formed in a push plate, and therefore the products can be conveniently discharged. A pushing plate and a sliding block slide along a sliding groove, the pushing plate pushes a product, the bottom of the pushing plate can push chippings on the inner side of the discharging mechanism body to move to a through groove and fall into a waste box through the through groove, and the situation that workers are scratched by the chippings falling all around during working and the chippings on the device is avoided; and in addition, workers only need to regularly clean the chippings in the waste box, so that the workload of the workers is reduced.

The invention relates to a double-water-core assembly air-air intercooling gas generator set radiator in the field of radiators. A radiator body comprises supporting side plates, a combined type radiating water core assembly, a pressurized air intercooler assembly, a wind scooper, a fan shield and mounting bottom feet. According to the combined heat dissipation water core assembly, the steel jacket cooling water core assembly and the exhaust cooling water core assembly are combined side by side to form a rigid whole. An air inlet and an air outlet of the supercharged air intercooler assembly are respectively connected with an air outlet and an air inlet of a turbocharger of the internal combustion engine to form an air-air intercooling loop; a water inlet and a water outlet of the steel jacket cooling water core assembly are respectively connected with a water outlet and a water inlet of an internal combustion engine steel jacket water chamber to form a circulating cooling loop; a water inlet and a water outlet of the exhaust cooling water core assembly are connected with a water outlet main pipe and a water inlet main pipe of the water-cooling exhaust pipe assembly of the internal combustion engine respectively to form a circulating cooling loop, the water flow and the flow speed of the water-cooling exhaust pipe are accurately controlled, and the working heat efficiency of the engine is improved.

The invention discloses a crash bearer bearing platform steel jacket box inner support self-adaptive adjusting method adapting to water level changes. The method comprises the steps of self-adaptive inner support configuration, sensing module deployment, data monitoring, data transmission and preprocessing, stress analysis and self-adaptive control. Through the design of the self-adaptive inner support, the water level change and the concrete pouring progress are responded in real time, and real-time self-adaptive balance of the dynamic load is achieved; the requirements of concrete pouring continuity and river environment unpredictability for real-time control are met by collecting data in real time, analyzing stress to solve the optimal adjusting quantity and driving the double-acting hydraulic oil cylinder to control stretching and retracting of the self-adaptive inner support, the construction risk is reduced, the operation efficiency is improved, the structural adaptability and safety are enhanced, and the construction cost is reduced. Therefore, intelligent upgrading of construction is promoted.

The cutter set comprises a main body and fine boring units, the main body comprises a mounting base, a plurality of mounting grooves distributed at equal intervals are formed in the side wall of the mounting base, and the fine boring units correspond to the mounting grooves one to one and are detachably mounted on the mounting grooves; a blade with a cutting edge protruding out of the mounting base is arranged at the top end of the fine boring unit. A plurality of fine boring units easy to disassemble and adjust are installed to replace traditional reamers to conduct fine machining on steel jacket parts, all the blades are independently clamped through the fine boring units, when local blades are damaged, the whole cutter body does not need to be disassembled and replaced, the clamping time is shortened, the maintenance efficiency is improved, the maintenance cost is reduced, and the production efficiency is improved. And the large-batch production efficiency of the steel sleeve parts can be improved.

The utility model relates to the technical field of hollow shaft motors, in particular to a signal magnetic ring assembly which comprises a steel sleeve assembly, a signal magnetic ring piece is arranged on the outer wall above the steel sleeve assembly, and a limiting piece penetrates through the interior of the signal magnetic ring piece. The steel sleeve assembly comprises a steel sleeve piece, a threaded piece is arranged on the upper portion of the steel sleeve piece, and a butt joint piece is arranged on the lower portion of the steel sleeve piece; and a stabilizing assembly. Compared with the prior art, the signal magnetic ring assembly provided by the utility model has the advantages that through the arrangement of the steel sleeve assembly and the signal magnetic ring piece, the situation that an induction magnetic ring falls off during working due to bonding failure of the signal magnetic ring piece can be avoided, and the reliability of a product is improved; the steel jacket assembly of the structure is low in machining difficulty, free of mold forming and low in manufacturing cost; the structure is thick in wall, interference press fitting does not produce linear plastic deformation, the production manufacturability is good, through the arrangement of the stabilizing assembly, the stability of the position of the signal magnetic ring piece is further guaranteed, and the reliability of the product is improved.

The application is suitable for the technical field of reinforced concrete reinforcement, and provides an outer steel sleeve reinforced damaged reinforced concrete frame structure, which comprises two groups of end reinforcement mechanisms, the end reinforcement mechanism comprises four reinforcement angle steels, further comprises: a middle reinforcement mechanism, the middle reinforcement mechanism comprises two connecting plates, a plurality of pressing plates are distributed between the two connecting plates, reinforcement steels are arranged on the pressing plates, two first connecting rods are symmetrically installed on the reinforcement steels at both ends, and two second connecting rods are symmetrically installed on the remaining reinforcement steels; and a supporting mechanism, the supporting mechanism comprises a plurality of supporting angle steels, two supporting plates are symmetrically installed on the supporting angle steels, sliding blocks on the supporting plates are connected with push rods through transmission rods, and the push rods are connected with push plates. The device can effectively reinforce the frame column, has good supporting effect, and can make the frame column have a use function even if the frame column is damaged.

The utility model relates to the technical field of heat pipeline, and disclose a kind of steel jacket steel compensation structure of steam heat pipeline, including heat pipeline, and the first compensation shell and the second compensation shell are equipped on heat pipeline, and the fixed plate is fixed in the top and bottom of the first compensation shell and the second compensation shell, and the sleeve and the sleeve rod are respectively fixed on fixed plate, and the reset spring is fixed in sleeve, and the installation cavity is set in the first compensation shell and the second compensation shell, and the first spring and the installation pad are equipped in installation cavity, and the fixed frame is fixed in the second compensation shell one end, and the limit rod is fixed in fixed frame, and the limit plate and the second spring are equipped on limit rod, and the plug rod is fixed on limit plate, and the fixed block is fixed in the first compensation shell one end, and the insertion slot is set in fixed block, in the utility model, by the cooperation of second spring, limit plate and plug rod, plug rod is released from insertion slot Limit, and then the disassembly and installation of the first compensation shell and the second compensation shell are facilitated.

The invention discloses a universal shaping pipe structure which comprises a universal pipe body, and the universal pipe body is composed of an inner pipe made of flexible materials and a stainless steel shaping pipe arranged on the periphery of the inner pipe in a sleeving mode. Wherein the water inlet end and the water outlet end of the universal pipe body are respectively provided with a metal sleeve piece; the metal sleeve piece is sequentially composed of a steel outer sleeve, an inner sleeve and an inner plug from outside to inside. The end head of the shaping pipe is pressed and fixed in a port between the steel outer sleeve and the inner sleeve; the two ends of the inner pipe extend out of the shaping pipe, and the ends of the inner pipe are pressed and fixed between the inner plug and the inner sleeve. The device is novel in structure, attractive in appearance, corrosion-resistant and durable, and can be directly assembled on a water control valve of a household kitchen by taking a traditional rigid water outlet pipe.

The utility model discloses a steel sleeve structure of an injection molding machine, which is characterized by comprising a cylindrical sleeve body and further comprising a detection cavity, a steel sleeve, a steel sleeve and a steel sleeve, the temperature sensor is arranged in the detection cavity; the elastic block is fixed to the temperature sensor and extrudes the temperature sensor to be attached to the detection face of the detection cavity, and the detection face is the face close to the inner ring of the sleeve body; the temperature sensor is provided with an electric wire, an elastic sealing ring is fixed to the outer wall of the electric wire, the elastic sealing ring is inserted into the detection cavity to achieve sealing, the temperature in the steel sleeve is monitored to detect that a signal is sent to the alarm when the temperature value is too high, and an overheat alarm caused by the too high temperature of the steel sleeve is sent out so that lubricating oil can be added to the steel sleeve in time; and the situation that the guide rod and the steel sleeve are burnt is reduced.

The utility model relates to the technical field of pipeline reinforcement, and discloses a pipe jacking temporary reinforcing device which comprises a movable pipeline, the movable pipeline is composed of a plurality of pipe joints and a plurality of steel sleeve assemblies, and the pipe joints are arranged in gaps between every two adjacent steel sleeve assemblies. A plurality of connecting blocks are installed on the inner walls of the steel jacket assemblies, a plurality of inner supporting column assemblies are arranged in inner cavities of the pipe joints, and the two inner supporting column assemblies are in butt joint with the connecting blocks on the inner walls of the two adjacent steel jacket assemblies correspondingly; according to the utility model, the plurality of steel sleeve assemblies are arranged to wrap the two ends of the plurality of pipe joints, and the plurality of inner support column assemblies are used for connecting the plurality of steel sleeve assemblies in the inner cavities of the plurality of pipe joints to form an inner support; and the pushing force is transmitted to the next steel sleeve assembly through the multiple inner supporting column assemblies till the pushing force is transmitted to the steel sleeve assembly at the head end, through the arrangement, the resistance borne by the multiple pipe joints in the moving process is greatly transferred, and the damage risk is reduced.

The utility model belongs to the technical field of cofferdam devices, and particularly relates to a concrete water-stop ring beam cofferdam device which comprises a steel jacket box and further comprises a base fixedly installed at the top of the steel jacket box, and a nut fixedly installed at the top of the base. Then the inserting grooves are arranged through the concrete ring beams, then the anti-slide piles are installed through the inserting grooves, after the device sinks in place and drains water, bottom sealing concrete does not need to be used for covering the bottom of the whole cofferdam, a template is installed, and the anti-slide piles are installed for reinforcement treatment; after the concrete is mixed with a small amount of sludge, the effect of fixing the cofferdam is achieved through the bonding force between the concrete and the rock stratum and the interface shear bearing capacity, the water stopping effect is achieved through the interface water stopping performance between the concrete and the rock stratum containing the surface cracks, the pile cap construction space does not need to be excavated through cutting into a concrete ring beam after pouring is completed, the construction period is shortened, and the construction cost is reduced. And the construction efficiency is improved.

The invention discloses a double-layer anti-corrosion steel jacket steel heat preservation pipe suitable for extreme working conditions, and belongs to the technical field of steel pipes, the double-layer anti-corrosion steel jacket steel heat preservation pipe comprises an outer pipe and an inner pipe, the inner pipe is arranged in the outer pipe, and a protection mechanism with a second supporting frame is arranged between the outer pipe and the inner pipe; the protection mechanism comprises a second supporting frame which is installed between the outer pipe and the inner pipe and used for repairing the air leakage joint, a repairing assembly with an air pressure driving part is arranged in the outer pipe, an annular cavity is formed in the outer pipe, and a main magnetic plate used for driving the second supporting frame is slidably installed in the annular cavity. The air rod can be driven to move through air pressure changes of the inner pipe and the outer pipe, then the main magnetic plate and the second supporting frame are driven to move to the damaged position for shielding and sealing, the situation that the pipeline is further damaged due to rapid air pressure changes is effectively prevented, and the stability and safety of the pipeline under the extreme working condition are greatly improved through the automatic repairing mechanism; and the maintenance cost and the downtime are reduced.

The utility model discloses a kind of composite thermal insulation layer steel jacketed steam direct-buried thermal insulation pipe, including working inner tube, the surface of both ends of working inner tube is provided with reinforcing plate of equidistance distribution, the one end of reinforcing plate is connected with outer sheath, outer sheath and working inner tube between are provided with thermal insulation layer, thermal insulation layer and the side contact of reinforcing plate, the both ends of working inner tube are provided with connecting assembly, the surface of connecting seat two, connecting seat one and outer sheath is provided with auxiliary assembly, by the connecting assembly set in working inner tube, can effectively prevent the loosening and displacement caused by external pressure, further enhance the compactness of connection, effectively buffer the impact caused by soil settlement and thermal expansion and cold shrink, avoid the leakage caused by pressure change or connection loosening, simultaneously in the auxiliary assembly set in connecting assembly, not only can effectively adapt to complex topographic change, avoid the pipeline stress concentration and connection damage caused by topographic factor, also can enhance the sealing performance of connection.