38 results about "Bearing capacity" patented technology

The invention discloses an adjustable supporting pier for boat, which comprises the following parts: lower base, upper sliding body, lever, lever shaft, starting device, safety device, limit hook and baffle, wherein two sides of lower base top are inclined-planes; respective inclined-plane of two upper sliding bodies connects two inclined-planes of lower base top; two levers are set in the lower base through lever shaft connecting two sides of lower base, which lie between two inside plates of lower base; the long shaft of lever can rotate to the bottom of lower base; two end shafts of starting shaft in the starting device pierces the bottom of lower base, whose two side shafts exposes out of case plate of lower base to push two side shafts to start the wedge through opening sliding along the floor; the adjustable support pier presses left and right slider with short shaft of lever entering the groove of upper sliding body, which pushes the lever rotate until the bottom of lower base; two side inclined surfaces support the bottom of lever, which fixes two upper sliding bodies to close the safety device.

The invention discloses a long-stroke high-precision piezoelectric displacement platform and a driving method thereof. The technical problems that a current piezoelectric stick-slip displacement platform is limited in stroke, unstable in motion and weak in bearing capacity are solved. The micro-displacement platform comprises a fixing base, a driving stator, a bearing sliding block, a top cover, aguide rail, a thread pair, stator mounting screws, top cover mounting screws and guide rail mounting screws. The driving stator extends slowly to drive a flexible hinge to deform through a stacked type piezoelectric ceramic, and continuous feeding of the bearing sliding block is realized by introducing sawtooth wave electric signals to the stacked type piezoelectric ceramic. The platform has thecharacteristics of being simple in structure, high in stability, large in stroke and high in load capacity, and has a good application prospect in the micro-nano driving and positioning fields such asoptical precision instruments and semiconductor processing.

The invention discloses a two-motion-range closed-chain connecting rod mechanism mechanical arm for assembling work. The mechanical arm is characterized in that the mechanical arm comprises a base, a rotating platform, an extending-and-contracting mechanism, a lifting mechanism and a driving device; the extending-and-contracting mechanism comprises a first driving rod, a fourth connecting rod, a fifth connecting rod, a first connecting rod and a pitching rod; one end of a second connecting rod is hinged to the other end of a second driving rod; one end of a third connecting rod is hinged to the other end of the second connecting rod; the upper portion of a wrist connecting rod is hinged to the other end of the pitching rod, and the lower portion of the wrist connecting rod is hinged to the other end of the third connecting rod; the third connecting rod is hinged to the middle of the fourth connecting rod; and the driving device comprises two servo motors, and the two servo motors are connected with and drive the first driving rod and the second driving rod correspondingly. By means of the two-motion-range closed-chain connecting rod mechanism mechanical arm, stability and reliability of mechanism operation are improved; no accumulative error is generated; and the mechanical arm is high in precision, compact in structure, high in rigidity and high in bearing capacity.

The invention discloses a rolling knuckle bearing. Inner surfaces of bearing outer rings and outer surfaces of bearing inner rings are spherical surfaces with coincided sphere centers; sphere sockets are distributed on the inner surfaces of the bearing outer rings; spherical rolling bodies are arranged in the sphere sockets; the inner surface of each bearing outer ring is provided with a circle of sphere socket on different annular circumferential faces; the circles of sphere sockets are uniformly distributed along the circumferential direction at intervals; the circles of sphere sockets on the different annular circumferential faces are symmetrically distributed by taking the bearing outer rings as centers along the axial directions of the bearing outer rings, so that the sphere sockets are uniformly distributed on the axial direction and the circumferential direction. According to the rolling knuckle bearing provided by the invention, three-axis space rotation can be realized; sphere parts enables rolling friction to replace sliding friction, so that the friction factor is reduced, and the fatigue life is prolonged; and the bearing capacity can be increased through bearing by multiple spheres, and the rolling knuckle bearing can bear radial load and axial load.

A fractured surrounding rock roadway three-region coordinated and coupled supporting system comprises a deep supporting structure and a peripheral surface supporting structure. The deep supporting structure comprises a plurality of three-region coordinated supporting combined anchor rods. The three-region coordinated supporting combined anchor rods are uniformly and peripherally arranged along a top plate, two sides and a bottom plate of a roadway and penetrate an anchorage fracturing region, a plastic region a and an elastic region. The peripheral surface supporting structure comprises a steel beam, a metal net and a hardened concrete layer, the steel beam and the metal net are matched for supporting along the top plate and two sides of the roadway, and the hardened concrete layer is laidon the bottom plate of the roadway. The invention further discloses a construction method of the fractured surrounding rock roadway three-region coordinated and coupled supporting system. By combination of the fracturing region, the plastic region a and the elastic region into a whole, the integral bearing capacity and deformation resistance of roadway surrounding rock are effectively improved, collapse in the fracturing region or the plastic region can be effectively avoided, giving full play to the bearing capacity of the elastic region is realized, and roadway surrounding rock stability isguaranteed.

The invention relates to a method for preventing and controlling soft ground subsidence caused by caisson fabrication, which comprises the following steps: increasing the frictional resistance of the caisson well wall; suspending the construction of the top structure of the caisson; At the same time, the construction of the top structure of the caisson is completed; the area of ​​the bottom of the caisson is increased, and the width of the annular blade foot is increased; cross beams are added at the bottom of the caisson to prevent the blade foot from being damaged due to uneven force during the caisson sinking process. Compared with the prior art, the present invention has the following advantages: (1) the present invention has a wide application range, and can be used according to the actual needs of the construction site for caisson fabrication and construction on soft soil foundations and other foundations with insufficient bearing capacity. The method provided by the present invention prevents the sudden settlement or inclination of the caisson; (2) the present invention is easy to apply, and can be realized by targeted improvement of the caisson structure; (3) the present invention is safe and reliable, and can effectively avoid caisson fabrication Sudden subsidence or inclination during the process brings potential safety hazards to the project.

The invention provides a bending resistant expandable type test platform system with an auxiliary support. The test platform system comprises a platform base, a height adjustment force-bearing frame,a cage-shaped main force-bearing frame, a lateral force-bearing column, a loading beam, a hydraulic cylinder, a screw rod, force-bearing ground rails, a ground force-bearing point and ground rail bolts. The test platform system in the invention makes full use of the bearing capacity of the force-bearing ground rails and the ground force-bearing point, expands the bearing capacity of a main platform formed by the platform base and the height adjustment force-bearing frame by designing the cage-shaped main force-bearing frame and adding the lateral force-bearing column as the auxiliary support,decomposes and transfers the root bending moment load to the auxiliary support and the main platform by using the end face and side of the cage-shaped main force-bearing frame, transfers the load simultaneously to the force-bearing ground rails and the ground force-bearing point so that the ground force-bearing point usually used for concentrated loading and bearing in a laboratory can also bear the test load, and enables the bending resistance of the test platform to be significantly improved without changing infrastructure conditions of fixing bearing members such as the force-bearing groundrails and the ground force-bearing point.

The invention relates to a civil engineering device and in particular to a novel civil engineering piling device. The device comprises a box body, a power box, a lifting box, a piling box and a movingdevice. The problem that the bearing capacity of a foundation needs to be reinforced by punching and piling the foundation in a civil engineering building can be solved. According to a traditional pile driving mode, impact pile driving is directly conducted on the ground, needs large impact force by pile driving, and severely influences the surrounding ground; and novel civil engineering piling device also solves the problems that due to the large impact force and large too vibration, the device is influenced, and parts are prone to being damaged.

The invention discloses a building workshop pile foundation and a building workshop piling technology applying the pile foundation, and relates to the technical field of pile foundation construction.The problem that an existing pile foundation is low in bearing capacity is solved. According to the technical scheme, the pile foundation comprises a pile body, a pile tip and a connecting pipe, a connecting hole is formed in the bottom of the connecting pipe, a dispersing hole is formed in the bottom of the connecting hole, an annular groove is formed in the bottom of the dispersing hole, and a plurality of air holes are formed in the bottom of the annular groove. The piling technology comprises the steps of a, a pile position is determined; b, the ground is cleaned; c, a pile machine is in place; d, a pile is stabilized and piling is conducted; e, high-pressure gas is used for loosening soil; and f, grouting of cement slurry is conducted. The high-pressure gas is sprayed out from the airholes in the periphery of the pile foundation to loosen the soil near the bottom of the pile foundation, and slurry is conveyed into gaps of the soil near the bottom of the pile foundation through the air holes, so that after the cement slurry is solidified, the contact area between the bottom of the pile foundation and the bottom of a foundation is increased, and the bearing capacity of the pilefoundation is improved.

Optimizing an "improper" combination, a combination consisting of an even plate or shell and a conceptually irregular set of reinforcing stiffeners, enables to attain said combination's hitherto unknown unique synergetic attribute, the attribute of total disappearance of local buckling phenomena of said combination when compressing thereof up to destruction of structural material(s) thereof, and therefore enables to utilize strength potentialities of the material per se utterly, just us utterly as when stretching thereof, and besides irrespective of plates/shells shape and size, irrespective of structural materials' kind, volume and weight, and irrespective of operational temperatures and type of external load distribution, etc. Accordingly, given equal other conditions, cardinal weight reduction or bearing capacity's raise of thin-walled structure's bearing skin is attainable that can be utilized for any aerospace thin-walled structure, very extensively in naval engineering, and in civil engineering sometimes also; besides a reduction of expenditures, more efficient utilization of energy resources and hence enhancement of the environment of mankind is provided too. I call said synergic attribute "Superstability".

The invention relates to a construction method for building pile foundation engineering, in particular to a pile forming method of an immersed tube pile, which is the preferred construction method of a multi-stage base large-bearing-capacity pile. The pile forming method of the immersed tube pile of the invention comprises the following process steps: a. the immersed tube with a metal pile head is sunk to a hard soil layer for designing elevation; b. the metal pile head is drawn out; c. a lower base space is formed, and fine earth is thoroughly taken out; d. flowing concrete is put into from an opening of the immersed tube to design an elevation L; e. the immersed tube is pulled upward to a set height H; f. an earth bucket is put into from an opening of a self-immersed tube, an upper base space is formed mechanically, and the earth bucket is lifted out; g. flowing concrete is used for casting the upper base; h. a precast pile body with dowels are put into and anchored with the base; and i. the immersed tube is pulled out, and concrete slurry is injected into the gap. The construction method can greatly enhance the precision, the quality, and the safety performance for the enlargement of the base.

The invention discloses a combined lead screw driving device. The combined lead screw driving device comprises an upper cross beam and a base plate. The upper cross beam and the base plate are connected through screws, so that a box is formed. A sliding lead screw penetrates through the middle of the upper cross beam. The bottom of the sliding lead screw is connected with the base plate. Two sets of guide columns and rolling lead screws are arranged and are axially symmetrical relative to the sliding lead screw. The two sets of guide columns and the rolling lead screws are both arranged in a diagonal mode. The sliding lead screw and the two sets of guide columns and rolling lead screws all penetrate through a driving sliding block. The driving sliding block can move up and down along the sliding lead screw. According to the combined lead screw driving device, cooling is conducted in the middle of the sliding lead screw and outside a sliding nut through cooling oil or compressed air, so that overheating of a friction pair is avoided; when an upper die makes contact with a part and starts punching, a servo motor drives a sliding lead screw to rotate, the driving sliding block is driven to move up and down, the rolling lead screws driven by another servo motor can move accordingly simply by being separated from the servo motor due to the fact that the rolling lead screws are not locked automatically, and thus punching is completed; the high bearing capacity of the sliding lead screw can be achieved.

The invention provides a tank type container. The tank type container comprises a tank body and a pair of end frames separately arranged at two ends of the tank body, a reinforcing ring is arranged onthe outer periphery of the tank body, and the end frames comprise bottom beams positioned below the tank body. The tank type container further comprises a beam element, and both ends of the beam element are connected to the reinforcing ring and the bottom beams separately. The arrangement of the beam element can decompose the load borne by the tank end portions to the end frames and the reinforcing ring, the stress on the tank end portions is effectively reduced, the stress concentration of the tank body is prevented, the local bearing capacity of the tank body against impact and abrasion isimproved, the normal operation of the tank type container under various transportation conditions is ensured, and the service life of the tank type container is prolonged.

The invention provides a concrete buckling-proof steel plate shear wall for a bottom strengthening zone of a steel structure dwelling. The concrete buckling-proof steel plate shear wall comprises a concrete buckling-proof cover plate and a steel plate wall provided with vertical stiffened ribs; the concrete buckling-proof cover plate is arranged on the outer side face of the steel plate wall provided with the vertical stiffened ribs, so that all cover plate bolt holes are concentrically aligned with corresponding steel plate wall bolt holes; and the tail ends of bolts sequentially penetrate through the steel plate wall bolt holes and the corresponding cover plate bolt holes, and nuts are screwed at the tail ends of the bolts. The concrete buckling-proof steel plate shear wall has the advantages that the concrete buckling-proof cover plate is installed on the outer side of the steel plate shear wall through the bolts, and by adjusting the hole diameter of reserved bolt holes of the concrete buckling-proof cover plate, it is ensured that relative slip can be generated between the steel plate shear wall and the concrete buckling-proof cover plate when the lateral force of the wall reaches a certain value, appearance of a tensile force band of the steel plate shear wall can be delayed due to existence of the concrete buckling-proof cover plate, and the shearing ability, the bearingcapacity and the earthquake resistance ability of the steel plate shear wall can be improved accordingly.

The invention relates to the field of water conservancy projects and discloses a treatment method for a base of a high plasticity index soft soil foundation. The treatment method comprises the following steps: S1, cleaning and leveling the foundation: cleaning and leveling an operating site and preparing a drainage system; S2, carrying out pile driving construction on the ground to form a plurality of sand piles on the ground; S3, detecting qualities of the sand piles; S4, constructing stirring piles on the sand piles, wherein one stirring pile is formed in each sand pile; and S5, detecting qualities of the stirring piles. The method of adopting the sand piles and the stirring piles on the high plasticity index soft soil foundation can solve the problem of coordination of bearing capacityof the foundation of a hydraulic structure and settlement deformation effectively, so that a hidden danger that a centralized water leakage channel under a bottom plate is formed as a basic bottom plate of the hydraulic structure is avoided.

The invention discloses an automobile spare tire pool structure, the spare tire pool is arranged on the rear floor, the middle part of the spare tire pool is provided with a mounting bracket for installing the spare tire; the spare tire pool is provided with protruding ten A glyph-shaped reinforcing rib, the cross-shaped reinforcing rib extends to the side wall of the spare tire pool; the mounting bracket is arranged at the center of the cross-shaped reinforcing rib; the front of the spare tire pool is on both sides of the cross-shaped reinforcing rib The position is provided with a front reinforcing structure; the rear of the spare tire pool is provided with a rear reinforcing structure on both sides of the cross-shaped reinforcing rib; the rear floor is provided with a rear floor reinforcing structure on both sides of the spare tire pool; the present invention bears Strong capacity, good structural stability, good modal stiffness performance, and can meet lightweight and process requirements.

The invention discloses a method for mounting a tower crane on the top surface of a shaped bridge. The method comprises the following steps of: (1) manufacturing a steel structure tower crane foundation, and welding a standard knot base to the tower crane foundation so as to manufacture a steel structure base; (2) drilling a plurality of holes in the top surface of an existing bridge or an existing structure object, or embedding anchor bolts in reinforced concrete, and anchoring the steel structure base on the top surface of the bridge or the top surface of a building through high-strength bolts; (3) mounting the tower crane on the steel structure base in the step (1); and (4) completing the mounting of the tower crane by a conventional method. According to the method disclosed by the invention, an existing structure object is used as a foundation, and the foundation of the tower crane does not need to be built additionally. When the bearing capacity of a ground base around the building is poor, and a water surface, a water edge or the like do not have conditions of building the foundation of the tower crane, the existing building is used for building the tower crane, so that the cost of the foundation of the tower crane can be saved. Steel members do not need to be embedded into concrete, and various materials can be repeatedly used, so that material wastage is reduced, and the cost is reduced.

The invention discloses an angle steel-gusset plate connection node semi-rigidity detection method in a power transmission angle steel tower structure. The method comprises the following steps that: S10, angle steel is installed on a gusset plate to obtain multiple groups of measuring pieces, wherein the measuring pieces are numbered, the angle steel and the gusset plate are made of Q420 steel, and bolts are 8.8-level or 10.9-level high-strength bolts of M20; S20, the measuring pieces are mounted on the testing device, and a measuring scheme is made; S30, the pressurization test is conducted on the test piece through a test device to obtain corner data of an angle steel shearing domain and a node domain; S40, the tensile test on each angle steel is carried out to obtain ultimate tensile stress, elastic modulus, yield stress and yield strain, wherein test piece sampling position of the angle steel is at a position which is 1/3 away from the limb width in the longitudinal direction of the angle steel; S50, the bearing capacity of the node plate, the local shearing corner of the angle steel and the bending moment bearing capacity of the node are is detected; and S60, the test structure of the angle steel-gusset plate is analyzed. The method has the advantage of accurate measurement data.

The invention discloses a steel pipe-reinforced concrete composite pile. The steel pipe-reinforced concrete composite pile is characterized in that steel pipe-reinforced concrete is of a combined structure of two types of piles, a pile body is divided into three sections, the lower portion is a reinforced concrete pile (1), the upper portion is a steel pipe pile (2), and the middle portion is a steel pipe encased concrete pile (3); and the reinforced concrete piles and the steel pipe piles are connected through steel-concrete connecting pieces (4) in the middle. According to the steel pipe-reinforced concrete composite pile, a large-bearing-capacity temporary structure in a deep soft soil layer or a water area environment meets the requirements that a pile foundation is large in vertical and horizontal bearing capacity, large in horizontal deformation resistance, convenient to construct and dismantle and small in influence on the water area environment.