626 results about "Self weight" patented technology

The invention relates to the technical field of cables, and discloses a weather-proof high-strength tensile aerial insulated cable and a preparation method thereof.The weather-proof high-strength tensile aerial insulated cable comprises a cable conductor, a protection mechanism is arranged outside the cable conductor, a supporting mechanism is arranged inside the protection mechanism, and an outer sheath is connected to the outside of the protection mechanism through a cushioning mechanism; the exterior of the cable conductor is fixedly connected with a force bearing layer, the exterior of the force bearing layer is provided with a repairing layer, the exterior of the repairing layer is fixedly connected with a heat insulation fireproof layer, the cushioning mechanism comprises an elastic rubber layer, and the inner side of the elastic rubber layer is fixedly connected to the exterior of the heat insulation fireproof layer. According to the invention, through the hollow bionic structure with the diaphragm in the core tubular bearing layer, the self weight is greatly reduced, and excellent bending resistance and torsional rigidity are provided at the same time; when the bearing layer is accidentally impacted, the internal diaphragm can effectively prevent longitudinal spreading of microcracks like a firewall, and damage is limited locally.

The invention discloses a precision pipe fitting machining device and method, and relates to the technical field of precision pipe fitting machining. The controller is mounted on the surface of one side of the machine tool main body; the supporting mechanism is mounted at the top of the machine tool main body and is used for supporting a machined pipe fitting; the machining mechanism is connected with the machine tool body and used for machining the outer wall of the pipe fitting; the first clamping mechanism is mounted at one end of the machine tool main body and is used for fixing the front end of the pipe fitting; according to the precise pipe fitting machining device and method, by optimizing a clamping and supporting mechanism, the problem of bending deformation caused by self weight in the pipe fitting machining process is effectively solved, when the positioning base moves, the first spring automatically adjusts the positions of the sliding frame and the lifting frame, it is ensured that the sliding frame and the lifting frame are evenly distributed at different positions of the pipe fitting, and the machining precision is improved. And the bottoms of the pipe fittings are uniformly supported through the supporting blocks and the supporting rods at the tops of the lifting frames, downward bending deformation of the pipe fittings due to self weight is avoided, and the machining precision is improved.

The invention relates to the technical field of new energy automobile battery pack detection, in particular to a new energy automobile battery pack collision test device which comprises a transverse moving mechanism arranged on the upper side of a bottom plate, a lifting mechanism arranged on the outer side of the transverse moving mechanism, and a holding mechanism arranged on the lifting mechanism. According to the invention, targeted impact can be applied to a single area of the battery pack or composite impact can be synchronously applied to different areas of the battery pack, and extrusion acting force continuously applied to the battery pack by the pile body under the influence of self weight of a vehicle can be simulated in collision impact; according to the invention, the battery pack can be synchronously driven to transversely move in the process that the battery pack is vertically impacted, so that the composite stress state of the battery pack under the influence of vehicle inertia during actual collision can be simulated; the device can accurately simulate the vertical extrusion force applied to the battery pack by the pile body under the self-weight effect of a vehicle, and drives the battery pack to move transversely to test the influence of transverse extrusion friction on the overall structural stability of the battery pack in a non-impact or weak-impact state.

The invention provides an aircraft framework and an aircraft, the aircraft framework is used for the aircraft flying in the atmosphere, the aircraft framework comprises a cage serving as a framework main body, the cage bears the self weight and the flight load of the whole aircraft, at least two first turbojet engines can be contained in the cage, and the first turbojet engines are arranged in the cage; the cage is open at least in the lower portion and used for allowing the jet flow of the first turbojet engine to pass through. Through the arrangement of the cage which is a skeleton main body, a power source device of the aircraft is collected and gathered, so that the miniaturization of the whole aircraft is realized.

The invention discloses a dry-method electrode film rolling compounding method and dry-method electrode film rolling equipment. The method comprises the following steps: leading out a current collector film from an unpowered unreeling shaft, forming a suspension arc by virtue of self weight, and penetrating through a first roller gap; synchronously unrolling the two dry-method electrode films in an unpowered manner, so that the two dry-method electrode films enter the first roller gap in a self-weight overhanging state and are attached to the two surfaces of the current collector film to form an initial complex; coating the outer side of the initial complex with an isolating membrane to obtain a to-be-heated complex, and enabling the to-be-heated complex to enter a second roller gap after the to-be-heated complex is overhung by self weight; the to-be-heated composite body is subjected to hot-pressing compounding through compounding rollers on the two sides of the second roller gap; and then stripping the isolating membrane and rolling the double-sided dry-method pole piece. According to the method, near-zero tension conveying is achieved through natural suspension, and by matching with isolation film wrapping and one-time double-face pressing of the hot-pressing roller, edge micro-cracking and whole belt breakage of the dry-method electrode film can be effectively avoided, and the interface density and the roll-to-roll production yield are improved.

The invention discloses a stress calculation method of a composite pull disc and a weaving method of the composite pull disc and an insulation rope section, belongs to the field of electric power tools, solves the problem that stress of the composite pull disc is difficult to assess, and adopts the technical scheme that the composite pull disc comprises a pull wire disc and a pull wire, one end of the pull wire is fixed on a tower, and the other end of the pull wire is fixed on the pull wire disc; the stay wire disc is installed on the ground and is used for the upward pulling force acting on the stay wire foundation, the calculated volume weight of soil, the included angle between the stay wire and the ground, the foundation upward pulling stability safety coefficient related to the soil resistance, the upward pulling stability safety coefficient related to the self-gravity of the foundation, the volume of anti-pulling soil in the depth, the upward pulling angle of the foundation and the self-gravity of the foundation. Wherein the upward pulling stability of the stay wire needs to be met. According to the invention, the stress evaluation of the composite pull disc is realized more conveniently.

The utility model discloses a testing device which comprises a weight disc and further comprises a vertical frame, the front face of the vertical frame is provided with a limiting sliding groove, and a screw rod is installed in the limiting sliding groove in a threaded mode. The measuring mechanism comprises a first sliding block and a bracket, the upper end of the bracket is fixedly connected with the lower portion of the first sliding block, the first sliding block is installed in the limiting sliding groove in a sliding mode, and the weight disc is placed on the bracket; and the jacking mechanism comprises a second sliding block and a damping telescopic rod, the second sliding block is installed in the limiting sliding groove in a sliding mode, and a threaded sleeve block and a clamp are installed on the second sliding block in an embedded mode. Through the self weight of the weight disc and the measuring mechanism and the downward pulling force applied to the organic synthetic material, under the condition that the organic synthetic material deforms, the pulling force applied to the organic synthetic material does not change due to the fact that the overall mass of the weight disc and the measuring mechanism is not changed; and the organic synthetic material with high deformation capability can be effectively tested.

The invention relates to the technical field of grouting construction equipment, in particular to a basement waterproof construction device which comprises a grouting machine body, a grouting pipe is connected to the grouting machine body, a beef tallow head is connected to one end of the grouting pipe, the basement waterproof construction device further comprises a grouting nail, the grouting nail is inserted into a wall, one end of the grouting nail is provided with a hinge head and a clamping groove, and the hinge head is connected with the clamping groove. A clamping jaw sleeve is axially, elastically and slidably arranged on the beef tallow head and used for clamping the clamping groove, a plurality of elastic clamping pieces in the beef tallow head clamp the hinged head, and by arranging a double-clamping structure that the elastic clamping pieces clamp the hinged head and the clamping jaw sleeve clamps the clamping groove, the grouting nail and the beef tallow head form two connecting points. Connection inclination caused by the dead weight of the grouting pipe is avoided, the connection strength is remarkably enhanced, meanwhile, the vibration influence of the grouting machine during working can be counteracted through the cooperation of double clamping and the buffering effect of the elastic piece, shaking or loosening of the connecting position is reduced, the grout leakage risk is reduced, and the sealing effect is guaranteed.

The invention relates to the technical field of precise positioning control, in particular to a two-degree-of-freedom large-stroke motion platform applied to wafer detection, which comprises a base platform and a load platform surface, the top surface of the base platform is provided with a linear motion platform and a rotary motion platform which are coaxially arranged, the linear motion platform is used for driving the load platform surface to do lifting motion, and the rotary motion platform is used for driving the load platform surface to do rotating motion. The rotary motion table is used for driving the linear motion table and the load table top to do circular motion, and the linear motion table comprises a linear actuator, an air floatation guide assembly, a first feedback device and a plate spring. The integrated design is adopted, the Z shaft and the Rz shaft are coaxially arranged and share the same air floatation guide assembly, the number of parts is effectively reduced, the axial space is compressed, the structure is more compact, the size of equipment is reduced, the self weight and the assembly difficulty are reduced, non-mechanical-friction guide is achieved, and the influence of friction on precision is avoided; besides, the plate springs distributed in a single layer achieve flexible decoupling through the axial and radial rigidity difference of the plate springs, motion crosstalk is restrained, and the dynamic response speed can be increased without a complex algorithm.

The utility model discloses a large-span steel-concrete mixed continuous rigid frame bridge structure. Comprising a plurality of concrete beam sections, a steel box beam section is arranged between every two adjacent concrete beam sections, the concrete beam sections and the steel box beam sections are connected through steel-concrete connectors, and the concrete beam sections are supported through steel wall piers; steel beam anchoring areas are arranged in the steel beam transition sections of the steel box beam sections, and longitudinal prestressed steel beams in the concrete beam sections penetrate through the adjacent steel-concrete connectors and are anchored in the steel beam anchoring areas on the corresponding sides. According to the utility model, the mid-span part concrete beam is replaced by the steel box beam section, so that the self weight of the structure is reduced, the side-mid span ratio is reduced, the shrinkage creep effect is reduced, the spanning capability of the bridge is improved, and the economic effect is increased; the longitudinal prestressed steel beam penetrates through the steel-concrete connector and is anchored in the steel beam transition section of the steel box beam section, and the connecting strength of the steel box beam section and the concrete beam section can be improved.

The utility model discloses a pulse back-blowing dust remover which comprises a shell, a dust removal unit is arranged in the middle of the shell, a dust removal assembly used for filtering dust is arranged in the dust removal unit, a dust removal subarea is arranged above the dust removal unit, airflow enters the dust removal subarea through the dust removal assembly, and the dust removal subarea is communicated with an exhaust pipeline through a stop valve. The side face of the shell is provided with an air inlet communicated with the air purification chamber, the air inlet is provided with an inwards-opened air door, the air door comprises a door plate, the upper end side of the door plate is hinged to the shell, the door plate is provided with a balance weight and a sealing strip, and closing and sealing of the air door can be achieved by means of self weight. A position sensor is arranged at the door plate to detect opening and closing and opening degree of the door plate, a pulse blowing assembly is arranged above the dust removal unit, the position of the door plate is sensed through the position sensor, and opening or closing of a stop valve and pulse back blowing are controlled. And high-pressure air is saved, the ash removal capability is high, the dust removal efficiency is high, the energy consumption is low, and the operation is stable and reliable.

The invention provides a refrigerator, belongs to the technical field of household appliances, and aims to solve the technical problem that after a door body of a related refrigerator is opened under the action of external force, the door body is easy to continuously rotate by a larger angle when the external force is relieved. The refrigerator comprises a refrigerator body, a door body and a hinge, the hinge comprises a fixing base, a hinge arm, a transmission assembly and an elastic piece, the fixing base is connected to the refrigerator body, the hinge arm is connected to the door body, the transmission assembly is connected between the fixing base and the hinge arm, and the elastic piece is connected to one rod piece in the transmission assembly. The elastic piece is matched with the other rod piece in the transmission assembly in an abutting mode within at least part of angle range in the rotating process of the door body, so that elastic deformation is generated, and the damping effect on movement of the hinge is achieved. When the door body is opened to a certain door opening angle and external force applied to the door body is relieved, the damping effect from the elastic piece can buffer at least part of door opening force or door closing force, and then the continuous rotating angle of the door body under the influence of inertia, self weight or manufacturing deviation and the like can be reduced.

The invention discloses a mica sheet feeding device of an automatic sheet arranging machine of a groove type commutator, and belongs to the technical field of commutator production equipment. The device comprises a device seat, and a mica sheet transfer seat, a falling seat, a mica sheet feeding device, a negative pressure adsorption device, a detection device, a turnover mechanism, a pushing mechanism, a sheet arrangement turntable, a turntable power motor and an extrusion device which are fixed on the device seat, the mica sheet transfer seat is provided with a column of mica sheet placing grooves, and the falling seat is provided with a corresponding falling channel; the side wall of a mica sheet accommodating seat of the turnover mechanism is provided with a whole circle of mica sheet inserting grooves, and the mica sheet inserting grooves are opposite to the placing grooves in batches through rotation; the mica sheet plug-in groove is in interference fit with the thickness of the mica sheet, so that the mica sheet does not fall off due to self weight and can be pushed by external force. The full-process mechanization of mica sheet feeding, positioning, batch insertion and mold vertical insertion is realized through the automatic mechanism, the problems that the assembly of the groove type commutator depends on manpower and a special feeding device is lacked are solved, and the production efficiency and the product quality can be obviously improved.

The utility model relates to an auxiliary supporting device for a lead screw, which is arranged between a lathe bed workbench and a lathe bed base and comprises a first supporting seat and two second supporting seats connected to two sides of the first supporting seat. A pair of rollers is horizontally and rotatably arranged on the first supporting seat and is used for supporting the lead screw; a third supporting seat is arranged above the second supporting seat, and a bearing is longitudinally and rotatably arranged above the third supporting seat; a supporting rod is arranged below the second supporting seat, and the bottom end of the supporting rod is connected with a connecting block used for being connected with a bed body base. The supporting device is simple in structure, convenient and easy to install and adjust and low in manufacturing and maintenance cost, the lead screw can be effectively supported through the pair of idler wheels, it is ensured that the lead screw within the movement stroke range is stably supported, it is ensured that the lead screw does not droop or deform, downward bending deflection caused by the dead weight of the lead screw is reduced, vibration generated when the lead screw rotates is reduced, and the service life of the lead screw is prolonged. Therefore, the machining precision and the machining quality of the machine tool are improved.

The invention relates to the technical field of compressed air energy storage, in particular to a gas storage cavern surrounding rock compression deformation simulation design method, equipment, a medium and a device. According to the invention, the bearing layer and the deformation layer form the simulation surrounding rock deformation, and the controllable deformation value generated by the simulation lining layer is converted into the measurable deformation value of the deformation layer, so that the specified deformation of the surrounding rock under the action of internal pressure can be conveniently simulated by adjusting the opening parameters of the deformation layer; during design, a given lining target deformation amount is used as a control target, and a deformation layer opening type capable of achieving the lining target deformation amount is preliminarily screened out by judging the error of the opening rate or the error of the actual maximum compression deformation amount; then, whether the holes in the deformation layer are basically closed or not under the action of self weight and the action of the maximum internal pressure P is checked, the hole type finally meeting the design requirement is screened out, the simulation test device simulates the pressure-bearing deformation capacity of the surrounding rock under the given condition, and the screening adjustment amount is small.

The utility model discloses a die casting work fixture which comprises a base, an installation groove is formed in the middle of the upper end of the base, and a linkage clamping mechanism is installed in the installation groove. The die casting placing device has the beneficial effects that the linkage clamping mechanism is arranged on the base for placing the die casting, so that after the die casting is placed on a placing plate in the linkage clamping mechanism, the placing plate can move downwards by utilizing the self weight of the die casting; by means of the clamping mode, the clamping plate can automatically clamp the side wall of the die casting by means of the connecting rod, the sliding rod and the sliding sleeve in the downward moving process of the placing plate, and the clamping plate can automatically reset under the action of the spring when the die casting is taken out after press fitting. And therefore, the clamping efficiency of the die casting before press-fitting machining is higher, and efficient press-fitting machining can be conveniently conducted on the die casting.

The invention discloses an automatic plate feeding system in energy storage container laser cutting, and relates to the technical field of laser cutting feeding devices, the automatic plate feeding system comprises a feeding mechanism and an adjusting mechanism, and the feeding mechanism is used for adjusting the horizontal position and the vertical height of the adjusting mechanism. According to the device, the positions of the suction cup assemblies are adjusted through the X-axis moving assembly and the Y-axis adjusting assembly in the adjusting mechanism, so that the distance between the multiple suction cup assemblies can be adjusted according to the sizes of the plates, and the adsorption fixing effect on the plates of different sizes is enhanced; in the middle supporting mechanism, a second servo motor drives a lead screw and a screw block to drive a supporting plate to horizontally move to the bottom of the large-size plate, an electric telescopic rod adjusts the height of the supporting plate to achieve bottom supporting, and in combination with the structural stability enhanced by a reinforcing plate, the vertical bending moment generated by the dead weight of the plate can be effectively counteracted; and arc-shaped deformation of high two ends and low middle due to middle sagging is avoided.

The utility model discloses a scaffold which comprises a supporting frame, the top of the supporting frame is connected with a mounting plate through bolts, the whole mounting plate is of a U-shaped structure, a rectangular opening is formed in the middle of the top face of the mounting plate, the top face of the mounting plate is connected with the supporting plate through bolts, and the middle section of the supporting plate is located above the rectangular opening. According to the scaffold, the problems that the top layer of an existing scaffold is of a steel layer net structure, the steel layer net structure aims at providing supporting and reducing the self weight at the same time, then pressure on a support below is reduced, and therefore the scaffold is not prone to falling off, and the service life of the scaffold is prolonged are solved. However, no guardrail is arranged on the periphery above the steel layer net, and safety protection cannot be conducted on constructors.

The invention discloses a concrete gravity dam structure with a cavity and a construction method thereof, and belongs to the technical field of water conservancy and hydropower engineering. The structure comprises a dam body, an anti-sliding structure, a weight reduction cavity and a gallery structure. The dam body is composed of a dam foundation arranged in the rock mass and a dam body poured on the dam foundation. The anti-sliding structure is a concrete anti-sliding plug which is formed at the bottom of the dam foundation and embedded into the bedrock. The weight reduction cavity is formed in the dam body in the axis direction of the dam. The gallery structure comprises a plurality of galleries arranged along the axis of the dam, a dam foundation grouting curtain is arranged at the bottom of the upstream gallery, and drainage structures are arranged in the galleries. By arranging the cavity in the dam and the steep dam slope, the using amount of concrete can be obviously reduced; an anti-sliding plug is used for providing passive anti-sliding force instead of resisting sliding force through dam foundation anti-sliding force generated between the self weight of a common gravity dam and a dam foundation rock mass, and meanwhile, a pre-stressed anchor cable constructed from a corridor is used for actively reinforcing and adjusting pre-tightening force so as to regulate and control dam foundation stress, so that the requirement of the dam foundation stress is met; seepage is controlled by combining a curtain and a drainage system. On the premise that the safety and stability of the dam body are guaranteed, the construction cost is effectively reduced, and remarkable economical efficiency and technical advantages are achieved.

The application provides a chemical mechanical polishing driving assembly, comprising a driving unit, a driving frame, a rotary joint, a bearing head and a damping shaft system; the damping shaft system comprises a first damping module and a second damping module to absorb vibration in horizontal and / or vertical directions respectively. The damping shaft system provided by the application absorbs vibration energy in different degrees of freedom without increasing the self weight of the driving frame, blocks the transmission path of the vibration energy, prevents the loosening and even failure of parts due to vibration, and improves the stability of wafer grinding quality to some extent.

The utility model discloses a comprehensive wiring distribution frame, which comprises a bottom plate and a distribution frame main body, the distribution frame main body is fixedly connected to the upper surface of the bottom plate, a plurality of ports distributed at equal intervals are arranged on one side of the distribution frame main body, and a plurality of groups of chutes corresponding to the ports one by one are arranged on one side of the distribution frame main body. The number of the multiple sets of sliding grooves is two, the two sliding grooves in the same set are located in the two sides of the port correspondingly, and a first protective cover and a second protective cover for sealing the port are slidably connected into the two sliding grooves in the two sides of the port correspondingly. According to the utility model, external dust can be prevented from entering the inside of the port, the phenomenon of short circuit or poor contact of the connecting line is prevented, the connection safety of the connecting line and the port is improved, the connecting line of the connecting point is always kept in a horizontal state with the port, the loosening of the connecting point caused by the falling of the connecting line due to self weight for a long time is prevented, and the service life is prolonged. And heat dissipation can be realized when the connection point of the connection line is connected with the port.

The application discloses a kind of UHPC connection's double post-tensioning prefabricated prestressed concrete frame structure system, including prefabricated concrete upper column, prefabricated concrete lower column, double post-tensioning prefabricated prestressed concrete composite beam, UHPC node core area and composite slab.The upper longitudinal main reinforcement, lower longitudinal main reinforcement, ordinary steel and post-tensioning prestressed tendon are directly anchored in UHPC node core area.The structure system is not only convenient and fast in field construction, improves component installation efficiency, but also can greatly reduce the anchoring length of steel bar, greatly reduce the amount of stirrup in node core area, avoid crowded steel bar in node core area, and reduce the cross-sectional height of component, reduce self weight, improve component crack resistance and self-recovery performance, thereby improve the seismic performance of overall frame structure.Double post-tensioning design can be reasonably designed according to different span, different load, different seismic intensity and other requirements, reduce cost, meet the use requirements.

The utility model discloses water-resistant water-based paint filling equipment, belongs to the technical field of filling, and solves the problem that the filling speed is slow under the influence of self weight due to the fact that water-resistant water-based paint is thick. Comprising a material storage barrel, a connecting shell communicating with the bottom of the material storage barrel and a filling pipe communicating with the lower end of the connecting shell, the top face of the material storage barrel can be opened and closed, a vortex assembly for guiding fluid in a material storage tank to rotate is arranged on the top face of the material storage barrel, and an adjusting assembly for controlling on-off of the interior of the connecting shell is arranged in the connecting shell. The filling device further comprises a supporting table which is arranged in a lifting mode and located below the filling pipe. An operator pours blended water-resistant water paint into the storage barrel and seals the storage barrel, the motor is started to stir to form vortex, the air cylinder drives the valve element to move to enable the feeding cavity and the discharging cavity to be communicated, the flow speed is increased, the outlet pressure is reduced, the boundary layer is disrupted, the viscous resistance is reduced, filling is rapidly completed, and the hydraulic cylinder is matched with different container heights. And the filling efficiency is improved.

The invention discloses an accurate layering stamping device and method for a motor punching sheet, a blanking channel below the stamped motor punching sheet is provided with a plurality of groups of layering mechanisms, each group of layering mechanism corresponds to one type of motor punching sheet, and according to stamping of different types of motor punching sheets, the number of the motor punching sheets is more than one. One group of the layering mechanisms extends into the blanking channel, one kind of motor punching sheets of the matched type pass through the blanking channel, and after the set type and number requirements are met, the group of layering mechanisms retract to the outside of the blanking channel, so that the motor punching sheets of the type fall into the material receiving device under the action of self weight; once different types of motor punching sheets on the material receiving device are stacked up and down according to the number and the type to form a stator iron core, the stator iron core is conveyed to a designated position by the conveying mechanism. According to the device and the method, through the layering mechanism, the motor punching sheets meeting the set requirements can fall, the motor punching sheets which do not meet the set requirements can be prevented from falling, and therefore accurate layering of different punching sheets can be achieved.

The utility model discloses a hoisting fixture for slope protection bricks, which comprises a hoisting ring, the hoisting ring is sleeved with two steel wire hoisting ropes, the other ends of the steel wire hoisting ropes are connected with fixed pull rings, lever fixture components are arranged below the fixed pull rings, and the fixed pull rings are arranged at the two ends of the lever fixture components. The lever clamp assembly is composed of two lever pieces, the two lever pieces are directly and movably connected through a bearing, a movable clamping plate assembly is installed at the tail ends of the lever pieces, and an isolation plate assembly is arranged in the middle of the lever clamp assembly. When the slope protection bricks are insisted in the lever piece, the isolation plate assembly arranged in the lever clamp assembly enables the slope protection bricks which are in face-to-face contact originally to be isolated, and only one side (the face in contact with the lever piece) of each slope protection brick originally can enjoy upward friction force. When the isolation plate assembly is placed, the other side of the slope protection brick can receive upward friction force, and the situation that the slope protection brick falls off due to the fact that the self weight is too large and friction force is not enough is avoided.

The invention provides a method for predicting the fish position of a logging cable in a vertical well, and the method comprises the steps: determining the total length of a dropped cable through the length of the cable before and after the cable is broken when a logging instrument is blocked to form a fish in a logging process; calculating the axial pressure of the cable distributed along the well depth according to the total length of the falling cable and the weight of the cable in the liquid; according to different axial pressures of the cable distributed along the well depth and bending deformation of the cable under the action of self weight, the intervals of the bending deformation of the cable in a spiral section, a sine section and a linear section are determined, and the axial deformation amounts of the cable in the spiral section, the sine section and the linear section are calculated respectively; the top well depth position of the fish is determined; through comprehensive analysis, the position of the cable falling into the well is accurately calculated for guiding construction of cable salvage operation, the cable salvage efficiency can be greatly improved, the cable salvage time is shortened, and risks existing in the cable salvage operation are reduced.

The present application belongs to the technical field of concrete beam-column structure, and specifically relates to a beam-column structure with locally internally arranged thin-walled steel pipes and a mounting method thereof. By reasonably arranging the internally arranged steel pipes and steel bars, the effects of reducing the self weight and improving the bearing capacity of the structure are achieved. The application of the steel pipes not only enhances the bending and shearing resistance of the concrete components, but also effectively delays the generation and expansion of cracks. In addition, due to the high strength and rigidity of the steel pipes, the structure can still remain stable under high load conditions, and is particularly suitable for occasions requiring high bearing capacity, such as bridges and buildings. A new design method of internally arranged steel pipe concrete is proposed by fully considering the stress characteristics of the beam-column components. Through detailed analysis of the structural details and working principles, professional technicians can implement the present application according to the description, so as to effectively improve the safety and economy of the engineering structure. The present application is used for improving the shearing, bending and overall stability of the structure.

The utility model discloses a sectional reinforcing structure of a crane boom, and relates to the technical field of crane booms. Comprising a bottom bearing frame, side reinforcing frames, a bearing piece, a top inclined frame, a connecting arm, a longitudinal reinforcing rod, a diagonal reinforcing rod and a first reinforcing piece, the side reinforcing frames are welded and fixed to the two sides of the bottom bearing frame, the top inclined frame is mounted on the bottom bearing frame in a bearing mode, and the bottom bearing frame, the top inclined frame and the connecting arm are connected to form a triangular structure. A plurality of longitudinal reinforcing rods are vertically installed between the bottom supporting frame and the top inclined frame, diagonal reinforcing rods are obliquely installed between the longitudinal reinforcing rods, and the bottom ends of the longitudinal reinforcing rods are welded and fixed through first reinforcing pieces. Through the hollow structure design of the bottom supporting frame, the side reinforcing frame, the top inclined frame and the like, the self weight is reduced while the bearing strength is ensured. The diagonal reinforcing rods and the gradient type longitudinal reinforcing rods which are arranged in a crossed mode are adopted, a multidirectional stress network is formed, vibration and deformation are effectively restrained, and the amplitude of the cantilever crane under heavy load is reduced.

The application discloses a pipeline transfer trolley, which comprises an axle and wheels at both ends of the axle, the axle is connected with the rear end of a push-pull frame, the front end of the push-pull frame is connected with one side of a pipe bracket, and the other side of the pipe bracket is provided with an upward opening groove in the transverse direction. The application has the advantages of: anti-falling optimization, eccentric welding of the push-pull frame and the arc-shaped pipe bracket form mechanical self-locking, the pipeline does not need to be additionally fixed, and the operation is simple and convenient; light weight, the self weight of the all-steel structure is less than 20 kg, one person can operate, and the difficulty of manual operation is reduced; strong passability, the solid tire can adapt to uneven road surfaces of a construction site and avoid being punctured; life improvement, the triangular reinforcing rib plate reduces the risk of fatigue fracture of the welding point; cost advantage, the material cost is less than 200 yuan, and the application is convenient to popularize; wide application range, applicable to DN65-DN300 pipelines.

The utility model relates to the technical field of foundation pit supporting, in particular to a supporting structure for foundation pit excavation. The supporting structure for foundation pit excavation comprises steel sheet piles pressed into a foundation pit to be excavated in a static force mode, the steel sheet piles are supported and fixed through transversely-arranged I-shaped steel, the I-shaped steel is divided into transversely-arranged steel and longitudinally-arranged steel which are horizontally arranged and vertically arranged, the number of the transversely-arranged steel is two, and the number of the longitudinally-arranged steel is two. The longitudinal steel and the transverse steel are used for abutting against the inner walls of the steel sheet piles correspondingly, and the longitudinal steel abuts against the transverse steel; due to the fact that the I-shaped steel composed of the transversely-arranged steel and the longitudinally-arranged steel and used for supporting the steel sheet piles is designed for the supporting structure, long-term supporting operation of the foundation pit can be achieved through the I-shaped steel and the steel sheet piles, the self weight of the I-shaped steel can be reduced through the transversely-arranged steel and the longitudinally-arranged steel, and natural sedimentation of the supporting structure is slowed down; the problems that in the prior art, a temporary retaining wall is used as a foundation pit supporting structure, deformation, displacement and the like are prone to occurring in the face of long-term supporting engineering, and foundation pit safety is affected are solved.