51results about How to "Stress structure is stable" patented technology

The invention relates to a construction method of a large-span thin wall planar arch truss based on a stiffened ring beam. The construction method comprises the steps: constructing an annularly closed ring beam foundation at the top of a main body structure; mounting a support seat on the ring beam foundation; arranging a support system at the top of the main body structure; arranging a single arch truss with an irregularly shape in the local area subsidence; forming multi-section truss units by segmenting the single arch truss; mounting the truss units two-symmetrically from bottom to top; connecting the adjacent two single arch trusses together through a connecting rod to form a roof cover structure; unloading the support system. By adopting the way of two- two symmetrically installation, the load of the installed truss unit on the support system is balanced; the truss unit is connected into a whole by the connecting rod to form a stable whole force structure, thus the problems of the unevenness of the force of the arch truss with the irregularly shape and concentrated stress are avoided.

The invention discloses a transverse-broaching device. The transverse-broaching device is provided with a rotating shaft, and is characterized in that the transverse-broaching device further comprises a rotating table, an earth cutting arm and a telescopic arm, the rotating table is driven by the rotating shaft to rotate, the outer contour of the earth cutting arm is an arc, the fixed end of the earth cutting arm is hinged and fixed to the rotating table through a hinge shaft, the other end of the earth cutting arm is hinged to the telescopic end of the telescopic arm through a hinge shaft, and the fixed end of the telescopic arm is fixedly connected with the rotating table. The transverse-broaching device has the advantages that the transverse-broaching device is simple in structure and capable of carrying out transverse broaching on any position of a pile body, the earth cutting arm can be driven by the telescopic arm to unfold outwards at any time so as to adjust and enlarge radii as required, and the earth cutting arm is stable in stressed structure, not prone to damage and high in broaching efficiency.

The invention relates to a roof frame installation structure. A roof side rail (3) of the roof frame is fixed on a side wall roof rail (4) of a side wall frame along the longitudinal direction of the car, wherein the roof frame installation structure also comprises a support member (5), the support member (5) is fixed on the side wall roof rail (4) and a roof cross rail (1) of the roof frame from the inner part of the car, and the support member and the roof cross rail (1) are located in the same cross section of the car. The technical scheme of the invention can obviously increase the rigidity and the strength of the upper structure of a body frame, so that the roof frame of the car can be prevented from seriously deforming toward the inner part of the car when a side turnover accident occurs to the car so as to ensure the safety of passengers.

The invention relates to the technical field of a mechanical shovel-like excavator which is special equipment for mining a large-scale open-pit mine, and particularly relates to a working arm frame ofan excavator and the excavator. The working arm frame comprises a lower arm frame, a support rod, an upper arm frame and a top pulley, wherein the lower end of the lower arm frame is hinged to a working platform, the upper end of the lower arm frame is hinged to one end of the support rod, the other end of the support rod is hinged to the top of an A-shaped frame, the lower arm frame, the supportrod and the A-shaped frame form a triangular support structure, the lower end of the upper arm frame is hinged to the upper end of the lower arm frame, the top pulley is arranged on the upper end ofthe upper arm frame, the upper end of the upper arm frame is connected with the top of the A-shaped frame by virtue of a pull rope, and a bucket rod and a pushing device are arranged on the lower armframe. According to the structure, the stressed structure of the working arm frame is optimized, the bending moment of the lower arm frame in the pushing process of the bucket rod is reduced, and theworking performance of the whole machine is improved; the support rod is additionally arranged on the arm frame, so that the possibility that the machine is damaged by the jacking of the working arm frame when a bucket is gnawing at the bottom is avoided.

The invention provides a rolling mill. The rolling mill comprises a rack, roller mechanisms and pressing mechanisms. The rack comprises a left archway, a right archway and at least one pair of guide cross beams, wherein the guide cross beams are horizontally connected between the left archway and the right archway. The left archway and the right archway each comprise two stand columns and a connecting cross beam, wherein the two stand columns are arranged oppositely and vertically, and the two ends of the connecting cross beam are detachably connected to the bottoms of the two stand columns correspondingly. The guide cross beams in each pair are arranged between the left archway and the right archway in a front-back symmetry mode, and the two ends of each guide cross beam are detachably connected with the corresponding stand column of the left archway and the corresponding stand column of the right archway correspondingly. Both an upper roller assembly and a lower roller assembly slidably abut against the stand columns. The pressing mechanisms drive the upper roller assembly and the lower roller assembly to slide on the stand columns in a face-to-face mode or oppositely correspondingly, and roller seams are symmetrically decreased or increased through the sliding. According to the rolling mill, a roller system can be disassembled and assembled rapidly, and real-time online symmetrical adjustment of the roller seams is achieved; and since a prestressing mechanism is arranged, on-load pressing can be achieved.

The invention provides a stepped set-back model large glass curtain wall construction method which includes the steps: S1 erecting steeped scaffolds below a glass curtain wall to be mounted along to the completed surface of the glass curtain wall and reserving operating space for operation of constructors among the steeped scaffolds and the glass curtain wall; S2 mounting glass curtain wall keelsat mounting position of the glass curtain wall; S3 mounting glass on the keels to form glass curtain wall. According to the method, appearance characteristics of a stepped set-back model curtain wallstructure are fully considered, the steeped scaffolds are erected along with the completed surface of the glass curtain wall, so that the glass is transported onto the scaffolds corresponding to floors, and the glass curtain wall keels of the floors are constructed. According to the method, a transport hoisting structure is arranged in the floors, so that the position of glass can be convenientlyadjusted to effectively adapt to mounting positions of the glass, and construction efficiency is improved.

The invention belongs to the field of tunnel engineering, and particularly relates to a construction method for rapid expanding excavation conversion during a sudden change of a large-span section of a tunnel section. The method includes the steps that when the tunnel section enters into a transition section of the abrupt change large-span section, a longitudinal advance pilot tunnel and a longitudinal follow-up pilot tunnel are excavated in sequence, and expanding excavation is conducted towards the arch part of the abrupt change large-span section while the follow-up pilot tunnel is excavated; then 90-degree straight turning expanding excavation is conducted in the direction of a side wall, reserved steps are excavated, an arch frame is annularly lengthened within a longitudinal length range, and arch feet are erected on the reserved steps of a longitudinal side wall; and then a reserved step is excavated in the longitudinal direction of a main tunnel, and primary support of the upper middle portion of the transition section is safely and rapidly completed. Therefore, construction safety is guaranteed, meanwhile, operation space is provided for follow-up large-span section right side upper pilot tunnel construction, and the defects that when a variable section construction method is converted, equipment is difficult to unfold, the construction speed is low, and the safety risk is high are overcome.

The invention discloses a method for making a cylindrical concrete pier column. The method includes: 1) making a cap; 2) connecting the lower end of the disassembly-free formwork with the upper end of the cap; Build pier core steel bars in the space; 4) pour concrete in the inner hole of the non-removable formwork, after the concrete solidifies, the cylindrical concrete pier column is completed, and the non-removable formwork forms the outer structure of the cylindrical concrete pier column; The beneficial technical effect is that: a method for manufacturing cylindrical concrete piers is proposed. After adopting the method, the construction period can be greatly reduced, the construction cost can be reduced, and the quality of the produced cylindrical concrete piers is better.

The invention discloses an embedded undercut insulating anchor and an embedding method thereof. The embedded undercut insulating anchor is of a more reliable mounting structure, is corrosion resistant, quite stable after long term use and easy and convenient to mount. The embedded undercut insulating anchor consists of a bolt and an insulating layer covering the bolt outside. The bolt comprises a taper head and an anchor rod, a hole is formed inwards at the end of the anchor rod and provided with an internal thread on the inner wall, and the taper head is of an undercut structure. The insulating layer is made of high-polymer insulating material and four anti-rotation reinforcing ribs distributed evenly are arranged on the outer surface of the insulating layer. The invention further discloses an embedding method of the embedded undercut insulating anchor.

The invention relates to the technical field of electricity generation devices, in particular to an offshore wind turbine foundation comprising grouting assemblies, suction force barrels and a guide pipe frame arranged on the suction force barrels. Each grouting assembly comprises a grouting pipe, a flow distributor and multiple flow distribution pipes which are sequentially connected. Each suction force barrel is provided with a suction force cavity. An opening is formed in the lower end of each suction force cavity. A water drainage opening is formed in the upper end of each suction force cavity. The outlet ends of the flow distribution pipes are arranged on the upper portions of the suction force cavities and are used for conducting grouting towards in the inner portions of the suctionforce cavities. The invention further provides a grouting construction method of the offshore wind turbine foundation, dependence of the wind turbine foundation installation on engineering geology isreduced, the construction effect and the economical performance are improved, the force bearing mode of the suction force barrels is changed, seawater in the suction force barrels is discharged, the effect of sealing the suction force cavities is achieved, a stable force bearing structure is formed below the wind turbine foundation, and stability of the foundation is improved.

The invention relates to the technical field of power equipment, and particularly discloses a soil retaining structure suitable for a power building built on soft geology. The soil retaining structureis used for shielding backfilled sandy soil on the side surface of the power building. The soil retaining structure comprises a pile foundation reinforcing structure, a soil retaining structure suitable for a power building built on soft geology and a soil retaining wall main body. The pile foundation reinforcing structure comprises a plurality of wood piles and peripheral jet grouting piles which are arranged in a square array, and a central jet grouting pile is arranged at the central position of the square array; the graded sand stone cushion layer is located above the pile foundation reinforcing structure and gradually thickens towards the direction close to the power building; the soil retaining wall main body is composed of cement and steel bars and is located above the graded sandstone cushion layer; and the side, close to the power building, of the soil retaining wall main body is of a vertical surface structure, and the thickness of the soil retaining wall main body is gradually increased from top to bottom. The soil retaining structure is suitable for the power building built on soft geology, and has the advantages of being stable in structure, convenience to transportand the like.

The invention discloses a high-strength multilayer plate which comprises a first solid board, a second solid board and a solid particle board, wherein a fiber plate is arranged between the first solid board and the solid particle board; the first solid board and the solid particle board are both adhered to the fiber plate; a stainless steel net is arranged on a surface of the fiber plate and is embedded into the solid particle board; a bamboo plate is arranged between the second solid board and the solid particle board; the second solid board and the solid particle board are both adhered to the bamboo plate; battens are arranged on the bamboo plate; the battens and the bamboo plate are integrally arranged; the battens are embedded into the solid particle board and are distributed in a form of Chinese character Tian; carbon fiber rods are arranged in the battens. The high-strength multilayer plate is high in mechanical strength.

The invention belongs to the field of tunnel engineering, and particularly relates to a construction method for transverse expanding excavation conversion when a tunnel section suddenly changes to a large-span section. According to the construction method, when the tunnel section enters the transition section of the suddenly-changed large-span section, firstly a preceding pilot tunnel is excavated, and then excavation expands towards the arch part of the suddenly-changed large-span section while excavating a following pilot tunnel; then 90-degree straight turning pilot tunnel expanding excavation is conducted in the side wall direction, during expanding excavation, a portal support is added to serve as temporary protection, and a portal cross beam is installed outside the large-span section contour line in the line direction; and after excavation is conducted to the position of a side wall arch foot of the large-span section, an annular arch frame of the large-span section is erected on the lower side of a portal cross beam at a time. According to the construction method, the portal support is large in operation space, high in safety and convenient to construct, meanwhile, the portal cross beam is arranged on the outer side of a main tunnel primary support arch frame, extension or erection of the main tunnel annular arch frame is not affected, the portal cross beam and upright end wall portal vertical supports at the junction of the two sections can serve as permanent primary supports, and the dismantling workload of the temporary portal is reduced.

The invention discloses a finely adjustable fixing device. The finely adjustable fixing device comprises a left plate, a right plate, a left tube and a connecting tube, wherein the left plate and theright plate are separately connected with the left tube and the connecting tube; one end of the left end is inserted into the connecting tube; the left tube is slidably connected with the connecting tube; a clamping hole is formed in the left tube; a connecting body is arranged on the outer surface of the connecting tube; a connector is arranged on the connecting body, and is rotatably connected with the connecting body; a ratchet wheel which is paired with the clamping hole is arranged at the tail end of the connector; the left tube and the connecting tube are limited through the clamping hole and the ratchet wheel; the connector is provided with a guiding groove and a trigger; a sliding part is arranged on the trigger; a sliding part is inserted in the guiding groove; the trigger is slidably connected with the connector through the sliding part and the guiding groove; a finely adjusting slot which is paired with the sliding part is formed in the connector; and a resetting spring which pushes the sliding part into the finely adjusting slot is arranged on the back surface of the trigger. The finely adjustable fixing device is good in safety and easy to operate.

The invention relates to a honeycomb cluster multi-rotor unmanned aerial vehicle structure and a control method thereof. The honeycomb cluster multi-rotor unmanned aerial vehicle structure comprises a plurality of unmanned aerial vehicle bodies, a frame is erected on each unmanned aerial vehicle body, the frames are polygonal and surround the outer sides of the unmanned aerial vehicle bodies, and the inner sides of the frames are connected with the unmanned aerial vehicle bodies through connecting rods; the frames are further provided with fixing mechanisms, and the fixing mechanisms are used for enabling the frames to be detachably connected, so that the multiple unmanned aerial vehicle bodies are combined with one another and fly synchronously. When one of the unmanned aerial vehicles fails, the control right and real-time flight data are transferred, and whether the power failure is lower than the power redundancy setting is judged, so that a homeward voyage program is executed or a preset route task is continued. According to the honeycomb cluster multi-rotor unmanned aerial vehicle structure, through mutual superposition of a plurality of individual unmanned aerial vehicles with the same performance, the flight performance is improved, the loading capacity, the endurance time and the error-tolerant rate of a redundant system can be improved, and the research and development cycle and cost are greatly reduced.

The invention discloses an independent suspension device of a non-manned trolley. The independent suspension device comprises a connecting piece (1), a fixing piece (2), an upper cantilever (3), a shock absorber (4) and a lower cantilever (5). One end of the connecting piece (1) is fixedly connected with one end of the fixing piece (2); the other end of the fixing piece (2) is connected with one end of the upper cantilever (3) through a pin shaft; the other end of the upper cantilever (3) is connected with a frame through a pin shaft; the lower end of the fixing piece (2) is connected with oneend of the lower cantilever (5) through a pin shaft, the other end of the lower cantilever (5) is connected with the frame through a pin shaft; one end of the shock absorber (4) is connected with thelower cantilever (5) through a pin shaft, and the other end of the shock absorber (4) is connected with a hub through a pin shaft. The independent suspension device is simple in structure, convenientto assemble and carry; and vehicles can be driven stably with the independent suspension.

The invention discloses an antirust installation bracket of an external unit of an air conditioner. The bracket comprises at least two vertical columns and an installation rack connected between the two vertical columns; the installation rack comprises an upper supporting beam, a lower supporting beam and an installation column, wherein the upper supporting beam is connected to the upper ends of the vertical columns, and the lower supporting beam is perpendicular to the upper supporting beam and is connected to the lower ends of the vertical columns; and an inclined conical surface with the two sides concaved inwards is arranged on the upper surface of the upper supporting beam, a blind drainage ditch is formed in the middle of the upper supporting beam, a drainage channel is formed in the lower supporting beam and communicates with an intersection point of the blind drainage ditch and the drainage channel through a drainage through-hole, a kidney-shaped groove I is formed in the end of the installation column and is connected to an installation plate through a screw, and the installation plate is provided with a kidney-shaped groove II with the same size as the kidney-shaped groove I. According to the bracket, water drainage and rust protection can be effectively realized, and the service life can be prolonged.

The invention relates to a carrier for transferring ceramic plates. The carrier for transferring the ceramic plates comprises an A-shaped structure and a chassis structure; the A-shaped structure is detachably mounted on the chassis structure through a fixing part; a large ceramic plate is obliquely placed on a carrying component of the chassis structure and is supported at the bottom through a long side; the plate surface leans against a plurality of leaning beams of the A-shaped structure; the large ceramic plate is integrally and vertically placed on the carrier; and the plate surface has an included angle with the vertical surface. According to the carrier for transferring the ceramic plates, the ceramic large plates are packaged, so that the occupied area of the ceramic large plates in the transferring process can be reduced, the convenience of freight and cargo carrying can be improved, the cargo carrying space is more effectively utilized, and meanwhile, the inclined placing method is matched with the leaning beams and the anti-skid cloth arranged on the carrying component, so that the ceramic large plate is more stable in the transferring process, and the protection on the ceramic large plate is enhanced.

The invention discloses a noninvasive tibia stretching traction apparatus, which comprises a clamping tube, wherein a connecting plate is arranged at one end of the clamping tube; mountain-climbing buckles are arranged at two sides of the connecting plate; a first protective layer and a second protective layer are arranged on the inner wall of the clamping pipe; lantern rings are arranged betweenthe first protective layer and the second protective layer; silicone exhaust tubes are arranged on the first protective layer and the second protective layer; the silicone exhaust tubes are arranged in a mode that one ends of the silicone exhaust tubes run through the clamping tube; the clamping tube is of a hollow structure and is provided with an interlayer; a drying agent is contained in the interlayer; air vents are kept in the inner layer of the clamping tube; a fixing device is arranged at the other end of the clamping tube; a fixing ring is arranged on the inner ring surface of each lantern ring; a protective device is arranged on the inner ring surface of each fixing ring; an electric cylinder is arranged on the clamping tube; the electric cylinder is fixedly connected to the clamping tube; a pedal is arranged at the tail end of the electric cylinder; the pedal is in hinged connection to the electric cylinder; and connecting rings, which are matched with the mountain-climbing buckles, are arranged on the pedal. With the application of the noninvasive tibia stretching traction apparatus, foot drop can be prevented; and by virtue of the air vents and the drying agent which are cooperated in use, sweat in legs of a patient can be absorbed conveniently.

The invention discloses a construction method for leading out a turnout extra-large-section tunnel in a railway cave. The construction method comprises the following steps that 1, an extra-large-section cave auxiliary excavation section is constructed; 2, expanding excavation is conducted on the auxiliary excavation section; 3, grouting is conducted on a middle pipe shed; and 4, the extra-large-section cave is excavated. According to the construction method for leading out the turnout extra-large-section tunnel in the railway cave, construction is flexible and changeable, the applicability is high, and the construction speed is high; by combining the characteristic that the lithology of surrounding rock of the extra-large-section cave is good, a simple middle partition wall method and two large-diameter steel pipe temporary vertical supports are adopted on the upper half section of the extra-large-section cave, and excavation is conducted on the lower half section of the extra-large-section cave through a step method; a double-side-wall equal-large-section shallow-buried and soft rock construction method is replaced, so that a steel arch frame can be smoothly connected from the arch top to the two ends, the stress structure is stable, and enough operation space can be provided for large construction operation equipment; and the defects that according to the double-side-wall equal-large-section shallow-buried and soft rock tunnel excavation construction method, large equipment is difficult to unfold, the construction speed is low, and the safety risk is high are overcome, and the application range of the tunnel step method excavation construction method is expanded.

The invention relates to a novel metal band sawing machine and an operation method thereof.The novel metal band sawing machine comprises a base, a feeding device, a transmission system, a saw frame, a guiding piece, a cooling system and a hydraulic system and further comprises stand columns, a sawing device and a control system, the clamping device comprises a front clamping piece and a rear clamping piece; the saw frame box comprises a left saw frame box and a right saw frame box; the saw beam is arranged on the saw frame; the saw blade is arranged in the saw frame box; wherein the transmission system is used for driving the saw blade, the hydraulic system is used for driving the saw frame and the clamping device, the saw frame boxes are located at the two ends of the saw frame, the supporting point of the auxiliary stand column is located at the center line of the saw beam, and compared with the prior art, the structural stability and the cutting effect of the sawing machine are improved.

The invention discloses a gas pressure sensor assembly structure which comprises a steel jacket adopting a barrel-shaped structure with a closed top end, wherein an injection molding hole which extends outwards is formed in the tail end of the steel jacket; the barrel wall on the edge of the injection molding hole in the steel jacket is folded outwards to form a folded edge. According to the gas pressure sensor assembly structure, a wavy continuous curve is formed on the periphery of the folded edge; the steel jacket subjected to injection molding and packaging is coated with a plastic rod, and the steel jacket and the plastic rod form a coaxial integral structure; the wavy continuous curve structure on the periphery of the folded edge can form a stable stress structure between the interior of the plastic rod and a coating plastic after injection molding and packaging, so that the steel jacket is effectively prevented from rotating in the plastic rod; the outwardly folded edge also can be used for effectively preventing the steel jacket from being pulled out from the plastic rod.

The invention discloses a lumbar vertebrae postoperative traction device. The lumbar vertebrae postoperative traction device comprises a waist fixing belt, a chest fixing belt and a connecting rod, wherein a fixing device is arranged on each of the waist fixing belt and the chest fixing belt; a guide rail is arranged on a side face of the connecting rod; a first slider and a second slider are mounted on the guide rail; the first slider is connected with the waist fixing belt through a bolt; the second slider is connected with the chest fixing belt through a bolt; a screw rod is arranged in theguide rail; connecting sheets are arranged at two ends of the screw rod; the connecting sheets are in thread connection with the screw rod; the connecting sheets are fixedly connected with the guiderail; the screw rod is suspended in the guide rail through the connecting sheets; thread holes and perforated holes matched with the screw rod are formed in the first slider and the second slider; theperforated holes are in clearance fit with the screw rod; the screw rod penetrates through the perforated holes; the thread holes and the perforated holes are distributed in a concentric circle manner; the screw rod is provided with a screw rod sleeve. The lumbar vertebrae postoperative traction device is convenient to carry.

The invention relates to a mold used for plastic suction of shape memory polymers. By adoption of the mold used for plastic suction of the shape memory polymers, the defects that in the prior art, secondary modification cannot be achieved after a plastic shell is cast, and an internal complex structure and a complex variable section cannot be manufactured; the internal structure of a conventional mold is difficult to clean, the wastage and the wear corrosion rate are high, the cost is high due to the fact that reprocessing is not available, and the maintenance cost is high; by adoption of an existing blow molding or mechanical deformation way or other existing ways, the pressure is nonuniform in the mold forming process, the surface smoothness of a manufactured sample is poor, and fracture damage is likely to occur; and an existing mold is simplex in function, can only deform once and cannot deform multiple times based on the temperature gradient according to requirements of users, and the degree of controllability is low are overcome. The mold comprises an upper mold body and a lower mold body, wherein the upper mold body and the lower mold body are buckled together to form a cuboid, and a mold cavity is machined in the cuboid in the length direction. The mold is applied to the field of plastic suction of the shape memory polymers.