4693 results about "Cantilever" patented technology

The invention relates to a tower crane operation control system based on complex scene three-dimensional real-time modeling. According to the system, a lifting hook is coarsely positioned through a lifting hook positioning and state sensing unit, a real-time position is positioned by combining a laser radar point cloud clustering algorithm with historical pose data, and visual tracking is synchronously performed by means of a tower top camera AI; converting the real-time point cloud data into a 3D voxel grid map, generating a global path by using a 3DA algorithm, and outputting a hoisting track after smooth processing and track optimization; establishing a sling-lifting hook double-pendulum dynamic model, predicting a state sequence based on a model prediction control algorithm, and adjusting a control signal through a feedforward compensation item and a feedback correction item; and the man-machine interaction and monitoring unit is used for displaying the cantilever angle, the lifting hook height and the three-dimensional map of the tower crane in real time and remotely intervening the operation state of the tower crane. According to the system, multi-source data are fused to construct a high-precision three-dimensional map, lifting hook positioning and full-view tracking are achieved, and lifting safety and trajectory tracking precision are improved through path planning and dynamics control.

The present invention proposes an intermediate diaphragm-free, suspended formwork-free, and negative moment tooth block-free beam bridge, and a design method thereof. The beam bridge includes prefabricated main girders, a wet joint, lower structures, and pier cap transverse beams above the lower structures. The concrete deck slabs of adjacent prefabricated main girders are connected by the wet joint. The design method of the above beam bridge includes the following steps: S1, initial design of the main girders; S2, calculation of the non-uniform deflection of the main girders and the indirect transverse stress of the deck slabs; S3, calculation of the direct transverse stress of the deck slabs; S4, crack resistance verification of the deck slab; S5, optimization of bridge parameters to reduce the stress on the driving surface; S6, completion of the beam bridge design. The beam bridge and its design method effectively solve the problem that the existing intermediate diaphragm-free beam bridge is prone to longitudinal cracking at the joints, and realize the suspension tension without the wet joint suspended formwork of the deck slab and the negative bending moment tendon, and have better mechanical properties and better economic, environmental and social benefits, which can facilitate the promotion and application of such bridges in various types of highways , railways and municipal engineering.

The invention discloses a bridge fabrication machine construction full-period informatization management system based on an AI technology, and the system comprises a bridge fabrication machine global sensing subsystem which is used for collecting construction parameters in the construction operation process of a bridge fabrication machine; the edge processing subsystem is used for performing edge processing on the construction parameters acquired by the bridge fabrication machine global sensing subsystem; the digital twinning subsystem is used for establishing a digital twinning model for simulating the whole construction period of the bridge fabrication machine and synchronously mapping the construction parameters subjected to edge processing to the digital twinning model; and the safety monitoring subsystem is used for monitoring the working safety of the bridge fabrication machine based on the digital twin model. The method is used for solving the problems that in the prior art, the monitoring and analysis capacity of the construction process of the cantilever bridge fabrication machine is poor, and operation safety is not facilitated, and the purposes of informatization management of the construction process of the bridge fabrication machine and improvement of the safety and scientificity of the construction process of a continuous beam are achieved.

The invention discloses a high-pier large-span extra-large bridge suspended pouring beam hanging basket construction method, and belongs to the field of bridge engineering construction.The method comprises the following steps that hanging basket rails are installed, the precision is controlled, and a hanging basket comprising a double-channel-steel main truss, a manganese steel sling, an arc-shaped flow guide plate and a honeycomb formwork is assembled; grading pre-pressing is carried out according to the specified multiple of the design load, and the pre-camber of the template is corrected by adopting a BP neural network to ensure that the finished bridge linear error meets the requirement; a mechanical-hydraulic-electrical integrated intelligent control system is deployed, and the traveling speed and synchronism of the hanging basket are controlled through double-oil-cylinder driving, a 5G digital twin platform and an edge computing technology, so that rapid alarm is realized when the load is abnormal; segmental circulation construction is carried out, and when the environment wind speed reaches a set value, a hydraulic rail clamping device is automatically locked; a model is established by using ANSYS software, and simulation verification is performed on multiple types of key working conditions to ensure that the safety coefficient of the structure meets the specification requirement. The construction precision and safety are guaranteed, and the method adapts to complex environments.

The glass substrate cassette with the supporting cantilever provided with the permanent magnet vibration reduction piece comprises an upper frame and a lower frame which have corresponding transverse width and depth, and a plurality of left and right outer frame columns and rear frame columns which are supported between the upper frame and the lower frame to form a containing space; the left outer frame column and the right outer frame column respectively extend towards the containing space to be provided with a plurality of short supporting rods, the rear frame column is respectively provided with a plurality of supporting cantilevers in an extending mode, the supporting cantilevers are respectively provided with a fixed end and a free end, the free end is provided with a permanent magnet vibration reduction piece, and the permanent magnet vibration reduction piece is respectively provided with an upper magnetic pole and a lower magnetic pole. And the other permanent magnet vibration reduction piece is opposite to the free end of the vertically adjacent supporting cantilevers, so that when the free end deviates from a balance position to start vibration, the permanent magnet vibration reduction pieces can be synchronously driven, combined magnetic restoring force facing the balance position is obtained from the adjacent permanent magnet vibration reduction pieces on the upper side and the lower side, and the permanent magnet vibration reduction pieces return to the balance position more quickly.

The utility model discloses a water area propeller and water area movable equipment. The water area propeller comprises a machine body, an operation device and a locking module. A propelling device used for outputting propelling force for propelling the water area carrier to move is arranged at the end of the machine body. The operation device is rotationally connected to the end, away from the propelling device, of the fuselage body through a transverse connecting shaft, can be folded or unfolded with the fuselage body and is used for being operated by a user to control the water area propeller to operate. The locking module comprises a first locking unit and a second locking unit, and the first locking unit and the second locking unit are arranged in the operation device and the machine body respectively. The operation device and the machine body are locked by the meshing force between the first locking unit and the second locking unit at the position between the transverse connecting shaft and the propelling device, and the operation device forms a suspension beam capable of loading the machine body between the transverse connecting shaft and the locking module.

The invention relates to the technical field of truck loading platforms, in particular to a multi-stage telescopic truck loading platform which comprises a multi-stage overhanging assembly, the multi-stage overhanging assembly comprises at least three stages of overhanging arms telescopic in the horizontal direction and a first driving mechanism, every two adjacent overhanging arms are arranged in a sliding mode, and every two adjacent overhanging arms are in transmission connection. The first driving mechanism is used for driving the multiple stages of overhanging arms to synchronously stretch out or retract and make contact with one another all the time when the overhanging arms are located in a truck loading area, and a bearing platform used for bearing goods is arranged on the last stage of overhanging arm. During use, the overhanging arms of the multiple stages of overhanging assemblies are driven by the first driving mechanism to stretch out or retract in the horizontal direction; the loading platform on the last stage of overhanging arm is conveyed to the needed position in the compartment in a long distance, the loading platform is completely suitable for being used in an ultra-long compartment and is also suitable for a compartment with a common length, the applicability is greatly improved, the loading platform can be used in compartments with different lengths, and the loading efficiency of bulk cargoes is also improved.

The invention discloses a concrete cantilever structure pull-up formwork construction method which is characterized by comprising the following steps: load calculation and component model selection; pre-burying the U-shaped bolts; pre-burying the upper-section pull rod; i-shaped steel end connecting plates are welded, and double-layer angle steel connecting plates are welded to the cantilever ends of the I-shaped steel; i-shaped steel cantilever girders are installed; assembling a pull rod system; the pull rods are fastened and leveled with a system, the two pull rods are synchronously fastened, the double rods are ensured to simultaneously advance and retreat during adjustment of an adjusting device, and a level gauge is used for observation and leveling after initial adjustment; the formwork frame and the safety enclosure are installed; pull rod pre-tensioning and deflection monitoring are carried out, pre-tension force is applied through an adjusting device, the deflection of the cantilever end is detected, monitoring points are arranged, and a deformation early warning mechanism is established; regulating and controlling concrete pouring; and removing the mold and recycling. The overhanging structure is high in anti-overturning capacity and suitable for large-span and special-shaped overhanging structures, and the safety is remarkably improved.

The utility model discloses a water area propeller and water area movable equipment. The water propeller is used for connecting a water carrier to propel the water carrier to move in the water. The water area propeller comprises a body and an operation device. A propelling device used for outputting propelling force for propelling the water area carrier to move is arranged at the end of the machine body. The operation device is rotationally connected to the end, away from the propelling device, of the fuselage body through a transverse connecting shaft, can be folded or unfolded with the fuselage body and is used for being operated by a user to control the water area propeller to operate. The operation device is provided with a first locking unit, the machine body is provided with a second locking unit, and when the operation device and the machine body are in a folded state, the first locking unit and the second locking unit lock the operation device and the machine body at the position between the transverse connecting shaft and the propelling device. And a suspension beam capable of loading the fuselage main body is formed between a locking position of the operating device between the first locking unit and the second locking unit and a connecting position of the operating device on the transverse connecting shaft.

The utility model discloses a water area propeller and water area movable equipment. The water area propeller comprises a machine body, an operation device and a locking module. A propelling device used for outputting propelling force for propelling the water area carrier to move is arranged at the end of the machine body. The operation device is rotationally connected to the end, away from the propelling device, of the fuselage body through a transverse connecting shaft, can be folded or unfolded with the fuselage body and is used for being operated by a user to control the water area propeller to operate. The locking module comprises a first locking unit and a second locking unit, and the first locking unit and the second locking unit are arranged in the operation device and the machine body respectively. The locking module locks the operation device and the machine body main body at the position between the transverse connecting shaft and the propelling device through the insertion force between the first locking unit and the second locking unit, and the operation device forms a cantilever beam capable of loading the machine body main body between the transverse connecting shaft and the locking module.

The invention discloses wafer transmission equipment, which comprises a module body, a placement table, a moving mechanism, a telescopic mechanism and a gripper, and is characterized in that the module body comprises a shell and a loading table in butt joint with the shell; the placing table is fixedly connected with the shell and is located in front of the shell together with the loading table. The moving mechanism is located in front of the placing table, and a transmission channel for the wafer box to walk is arranged between the moving mechanism and the placing table. The telescopic mechanism is connected with the moving mechanism and can move in the left-right direction and the up-down direction under the driving of the moving mechanism, the telescopic mechanism comprises a telescopic arm and a balance block, and the sliding arm and the balance block synchronously and reversely move in the front-back direction under the driving of the driving assembly; the sliding arm comprises a connecting part and an overhanging part which is located behind the connecting part and can backwards extend out of the seat plate. The gripper is fixed on the lower surface of the overhanging part, and the gripper is provided with a groove for the embedding of the bearing projection of the wafer box. The wafer transmission equipment can store more wafer cassettes, and can realize stable carrying of the wafer cassettes.

The invention relates to the technical field of unmanned aerial vehicles, and discloses an airborne rear delivery cabin for unmanned aerial vehicle rescue, which comprises a rear delivery cabin body, and is characterized by further comprising an inner hanging frame fixedly sleeved outside the rear delivery cabin body; the outer hanging frame is movably connected with the inner hanging frame through a plurality of universal connecting pieces, and the outer hanging frame is provided with fixing lugs used for being connected with an unmanned aerial vehicle; the universal connecting piece is provided with a balance weight cantilever and a balance weight piece, and a first-level posture stabilizing system enabling the rear delivery cabin body to be kept horizontal in the flying process is formed. Through a first-stage stabilizing system composed of the universal connecting piece and the balance weight, pitching and rolling motion of the unmanned aerial vehicle is effectively decoupled, no matter how the unmanned aerial vehicle tilts, the rear delivery cabin body can passively maintain an approximately horizontal state under the action of the inertia principle, angular motion transmitted to the wounded is greatly reduced, and the unmanned aerial vehicle is more stable. The comfort level is improved; and the risk of secondary injury is reduced.

A deep pipe product hole lining pasting device comprises a pipe fitting supporting displacement unit, a lining pasting unit, a gluing unit, a cantilever conveying unit, a supporting device and a base, the pipe fitting supporting displacement unit comprises an adjustable supporting mechanism, a chuck, a rotary driving mechanism and an axial adjusting mechanism, and the adjustable supporting mechanism is installed on the base through a guide rail sliding block; the rotary driving mechanism is installed at the tail end of the base and used for bearing the chuck, and the axial adjusting mechanism is fixed to the middle of the base and connected with the adjustable supporting mechanism. The cantilever conveying unit comprises a transplanting mechanism and a cantilever mechanism, the cantilever mechanism is installed on a transplanting mechanism platform, and the transplanting mechanism is installed at the front end of the base; the lining pasting unit comprises a swing mechanism, a lining supporting mechanism and a clamping jaw used for being matched with the supporting device. According to the device, automatic pasting, supporting solidification and gap glue supplementing of linings in medium-diameter deep pipe products can be achieved, the problem that manual operation is difficult is solved, and the automation degree and the production efficiency are effectively improved.

The invention discloses a continuous rigid frame aqueduct cantilever casting hanging basket stress monitoring and early warning method and system, and relates to the technical field of hydraulic engineering construction.The method comprises the steps that stress monitoring points and displacement monitoring points are arranged, and a stress-displacement double-system collaborative sensing model is constructed; carrying out double-channel vibration noise separation on the stress signal and the displacement signal which are collected in real time; respectively calculating wet weight values based on a stress-wet weight nonlinear mapping relation and a displacement-wet weight geometric inversion model, and verifying the consistency of wet weight value measurement results through a residual checking mechanism; constructing a multi-source driving safety threshold model, and generating a dynamic safety threshold in real time; and when the monitored wet weight value exceeds the dynamic safety threshold value, triggering graded early warning and executing risk control measures. According to the stress-displacement dual-system independent measurement and cross checking method, through a vibration frequency domain compensation algorithm, vibration interference is suppressed, a multi-source driving safety threshold model is constructed, and high-precision monitoring of the stress of a continuous rigid frame aqueduct cantilever casting hanging basket is achieved.

The invention provides a biomass power generation furnace front feeding cantilever spiral, and relates to the technical field of biomass power generation equipment, the biomass power generation furnace front feeding cantilever spiral comprises a driving part and a feeding part, the driving part comprises a gear motor, a driving shaft, a driving gear, a linkage gear, a driven gear, a rotary lifting disc, a driving piece, a positioning support, a driving part shell and a visual sensing assembly; the feeding part comprises a spiral shaft, a feeding part shell and a rotary anti-blocking assembly. The anti-blocking device has the advantages that shearing force is formed through coaxial and reverse rotation of the rotary anti-blocking assembly and the spiral shaft, the breaking efficiency of soft straw blocking materials is improved, the blocking rate is greatly reduced, the gear meshing precision is precisely controlled by combining a visual camera and a laser displacement sensor, tooth collision is avoided, the equipment operation reliability is remarkably improved, and the practicability is high. And two operation modes are supported to adapt to different materials, and the applicability is high.

The invention discloses an irrigation channel maintenance cofferdam system and a maintenance method, the system comprises a vehicle body with an arm, a rotating device, a cofferdam device and a sealing structure, a cantilever is hinged to the tail end of a working arm of the vehicle body with the arm, the rotating device is mounted at the lower end of the cantilever, and the cofferdam device is mounted at the lower end of the rotating device; the cofferdam device comprises a first baffle and second baffles, the two second baffles are installed at the left end and the right end of the first baffle correspondingly, an included angle is formed between each second baffle and the first baffle, and sealing structures are installed on the lower sides of the first baffle and the second baffles and the sides, away from the first baffle, of the second baffles correspondingly. A connecting base is installed on the upper side of the first baffle and connected with the rotating device. When the cofferdam device is installed, the cofferdam device is fixed through the working arm of the truck body with the arm, and the cofferdam device is more convenient to install.

The invention provides a vertical adjusting device for a hanging basket sling in bridge cantilever construction. The vertical adjusting device comprises a hanging basket body, an adjusting master control platform, a sling, an adjusting control assembly, a temporary locking assembly, a measuring assembly and an auxiliary supporting assembly. One end of the hanging basket body is installed on a bridge, the other end of the hanging basket body is overhung to the outer side of the bridge, the adjusting master control platform is installed at the other end of the hanging basket body, and the lower end of the sling is connected with the hanging basket body. The adjusting control assembly, the temporary locking assembly, the measuring assembly and the auxiliary supporting assembly are installed in the adjusting main control platform, and the hanging belt penetrates through the adjusting main control platform and is vertically and adjustably arranged through the adjusting control assembly; the temporary locking assembly is temporarily clamped on the hanging belt, a plurality of holes are formed in the hanging belt at equal intervals, the auxiliary supporting assembly can vertically penetrate through the hanging belt through one hole, and the measuring assembly is in movable contact with the hanging belt. The invention relates to the technical field of bridge construction, and can solve the problems of insufficient precision and low efficiency of manual adjustment of a hanging basket sling in the prior art.

Hinge assembly for glasses (100) comprising: a support plate (110) comprising a first cantilevered portion (113) and a second cantilevered portion (114) respectively having a first through hole (115) and a second through hole (116); a support body (130) rotatably coupled to the support plate (110), the support body (130) comprising a third through hole (132), a slotted through hole (133) and at least one housing chamber (138); a first arm element (140) and a second arm element (150) having respective first perforated end portions (141, 151) arranged respectively at the first through hole (115) and the second through hole (116), and respective second perforated end portions (142, 152) housed at the third through hole (132), a first coupling pin (136) crossing the third through hole (132); a third arm element (160) and a fourth arm element (170) having respective third perforated end portions (161, 171) rotatably coupled respectively to the first perforated end portions (141, 151) and respective fourth perforated end portions (162, 172) housed at the slotted through hole (133), a second coupling pin (137) crossing the slotted through hole (133); at least one elastic element (139) housed in the at least one housing chamber (138).

The invention belongs to the technical field of mechanical parking, and particularly relates to a rear cantilever type two-wheeled electric garage lifting device which comprises a steel frame structure, a lifting driving assembly, at least one upper-layer vehicle carrying plate, a lower-layer vehicle carrying plate, a drag chain, a fence and a walking track. Wherein the steel frame structure comprises a top cross beam and a pair of channel steel rails which are arranged on the rear side of the equipment in the vertical direction and are mounted face to face, and a closed lifting guide channel is formed; the inner wall face of the channel steel rail is a rolling contact face of the lifting walking wheel, and an opening of the channel steel rail faces forwards, so that the vehicle carrying plate is only restrained and guided by the rear side rail in the lifting process, the front area is completely opened, and a user can conveniently push in or push out the two-wheel electric vehicle. The structure that a single lifting point is matched with four lifting traveling wheels ensures that the vehicle carrying plate is kept in a horizontal posture in the whole lifting process, and the phenomena of inclination, shaking or clamping stagnation are avoided; the steel wire rope tensioning assembly automatically adjusts tension, loosening slipping or too tight breakage is avoided, and long-term reliable operation is guaranteed.

The invention discloses a BIM (Building Information Modeling) and real-time monitoring-based cylindrical pier cast-in-place cantilever variable cross-section continuous beam bridge construction early warning system and method, and relates to the technical field of construction early warning. According to the system, alignment and noise reduction are carried out on monitoring data through BIM constrained drift correction, a curvature sequence and an acceleration sequence are obtained, an energy response index and an energy characteristic index are extracted, and a space-time distribution matrix is formed. And identifying a curvature deviation development trend by using a time sequence prediction model, and dynamically evaluating structural stress distribution and a deformation state in combination with finite element analysis. When the deviation value or the stress result exceeds a multi-level threshold value, finite element reanalysis is triggered for correction. And the decision execution module judges the real-time safety level and generates an early warning signal by integrating the monitoring characteristics and the simulation result based on a robust intelligent identification model subjected to ring loss regularization training. The method can improve the monitoring precision and robustness of the construction stage, and achieves the real-time, foresight and closed-loop management and control of the structure safety.

The application discloses a masonry processing dust recovery device for building construction, wherein a fan is arranged on the top surface of a recovery box, an air suction pipe extends into the inner cavity of the recovery box, a dust suction pipe is arranged on the front wall of the recovery box, a filter screen is arranged in the inner cavity of the recovery box and located between the air suction pipe and the dust suction pipe, one end of the filter screen is connected to the front wall of the recovery box through a rotating shaft, the free end of the filter screen is close to the rear wall of the recovery box, spacing blocks are arranged on the rear wall of the recovery box, the free end of the filter screen is located between the spacing blocks, a rotating ball is movably arranged on the rear wall of the recovery box, a cantilever and a lever are respectively connected to the two sides of the rotating ball, a knocking hammer is arranged on the free end of the cantilever, a rectangular gap is arranged on the lower part of the rear wall of the recovery box, a collecting box is arranged in the bottom of the inner cavity of the recovery box in a drawer type through the rectangular gap, a baffle is arranged on the rear wall of the collecting box and fixed to the recovery box through bolts to cover the rectangular gap. The device does not need to disassemble and clean the filter screen, reduces the cost, improves the dust recovery efficiency, realizes green construction of masonry processing, avoids the influence on the health of construction personnel and the environment.

A wafer suspension fork has a body and a cover. The body has a connection portion having multiple inlets and two arms being symmetrical in shape and protruding from the connection portion. Each arm has a holding surface, a flowing surface, multiple inner and outer inclined holes formed in the holding surface arranged along a protruding direction, an inner flowing channel formed in the flowing surface and communicating with the inner inclined holes and the inlets, and an outer flowing channel formed in the flowing surface and communicating with the outer inclined holes and the inlets. The cover is fixed to a bottom surface of the body. A wafer is able to be suspended and held above the two arms by adjusting pressure of gas flowing out from the inner and outer inclined holes and is able to be moved free from being scratched.

Hinge assembly for smart glasses (100) comprising: a support plate (110) which comprises a first cantilevered portion (113) and a second cantilevered portion (114), the support plate (110) comprising an opening (190) between said first cantilevered portion (113) and said second cantilevered portion (114), the support plate (110) comprising a first side wall (128) and a second side wall (129) connecting said first cantilevered portion (113) to said second cantilevered portion (114): a support body (130) rotatably coupled to the support plate (110); a masking and guide body (180) for an electrical cable (220) interposed between the cantilevered portions (113, 114), the masking and guide body (180) for the electrical cable (220) comprising a first rest portion (183) and a second rest portion (184) spaced from each other and at least one bridge element (185) connecting the rest portions (183, 184) to each other, the rest portions (183, 184) facing each other and defining a free gap between them, the distance between said side walls (128, 129) is such as to determine a first angular delay between the rotation of the support body (130) and the rotation of the masking and guide body (180) for the electrical cable (220) and a second angular delay between the rotation of the support body (130) and the rotation of the masking and guide body (180) for the electrical cable (220).

The invention discloses a construction method of a cantilever formwork system device and a fine-adjustable cantilever formwork system device. The construction method of the cantilever formwork system device comprises the following steps that A, a tripod operation platform is installed; b, a formwork system is assembled; c, a vertical main back ridge, a fine adjustment device, an adjustable triangular support, an adjusting base and a movable scaffold with trundles are installed and fixed to the tripod operation platform; d, the frame body comprising the tripod operation platform is integrally hoisted and hung and buckled on an embedded part in lower layer structure concrete; e, the reserved structure space is enlarged through a fine adjustment device, and the tripod operation platform and the movable scaffold with the trundles are used as platform binding structural steel bars; and F, after steel bars are bound, the formwork system assembled in the step B is hoisted in place, the formwork system is adjusted to the designed structural size position through a fine adjustment device, and structural concrete is corrected and poured.

The invention discloses a metal plate connecting or forming device and method based on aluminum foil electric explosion impact force, and relates to the technical field of high-speed forming and connecting of the metal plate machining technology, and the device comprises an upper pressing block, a lower insulating block, a base plate, an objective table and an impact force transmission block; an objective table is slidably arranged on the base plate; the lower insulation block is arranged on the base plate, a working cavity is formed in the lower insulation block, the impact force transmission block is placed in the working cavity, and an aluminum foil is placed at the top of the lower insulation block and connected with a pulse current discharge system; a supporting cantilever is installed on one side of the base plate, and the upper pressing block is arranged on the supporting cantilever. According to the aluminum foil electric explosion impact device, an original aluminum foil electric explosion impact device is improved, a machined metal plate can be better in forming quality or connecting quality, the surface of the plate can be kept clean, environmental pollution is reduced, and green production is achieved.

The invention discloses a large cantilever concrete structure formwork layered anchor pulling construction method and an intelligent monitoring system, and particularly relates to the field of building construction.The large cantilever concrete structure formwork layered anchor pulling construction method comprises the steps that a 16 # I-steel cantilever heavy frame is installed by pre-burying a high-strength bolt sleeve and conducting three-dimensional positioning; the first to sixth rows of frame bodies are erected layer by layer, a secondary top layer is poured, and the first to fourth phi-20 flower basket pull rods are sequentially installed after top layer concrete is poured; then main and secondary keels and an adjustable jacking are installed, a formwork is laid, and the elevation is corrected to be + / -3 mm; steel bar numerical control machining straight thread connection and water and electricity pre-burying are synchronously completed; arranging a vibrating wire strain gauge, a spoke pressure gauge and a tilt angle sensor, uploading data to the BIM in real time, and establishing load-deformation dual-threshold early warning; after the formwork is removed, a scaffold and a main body structure are tied and reinforced in time at the upturning ridge of the eave gutter on the top layer of the concrete structure according to a wall connecting piece method through steel pipe fasteners; the formwork and the outer protection frame are integrated, concrete is poured twice, early warning and alarm linkage are achieved, and safety and high efficiency are achieved.

The invention relates to the technical field of automobile cable connectors, and particularly discloses an automobile connector with good tensile resistance, which comprises a first connecting terminal and a second connecting terminal which are mutually plugged, a floating cavity is arranged in the first connecting terminal, and an inner sliding seat connected with a cable and a rotating sleeve sleeved outside the inner sliding seat are arranged in the cavity; the inner sliding seat is provided with a guide chute, and the rotating sleeve is provided with a guide sliding block and a locking convex part. The inner sliding seat is pulled to slide to drive the rotating sleeve to rotate, so that the locking convex part rotates to the inner side of the cantilever spring bolt to form rigid abutting, a deformation space is filled, cable drawing force is actively converted into rotating locking force, the effect that the larger the pulling force is, the more stable the locking is achieved, ratchet wheel non-return and cable linkage protection are matched, and the locking effect is better. And the problems that the connector accidentally falls off and the cable is broken and fails under extreme working conditions are effectively solved.

The invention discloses an impacting-splitting-cutting composite rock breaking configuration of a cantilever type heading machine, relates to the field of coal mine underground heading equipment, and solves the problems of low efficiency, serious cutting pick abrasion, poor stability and insufficient adaptability of an existing heading machine during hard rock operation. A multi-stage cylinder executing mechanism is arranged on a cutting arm of the heading machine, an angle adjusting rotary table is arranged at the upper end of the multi-stage cylinder executing mechanism, and a breaking hammer and a rock cracking machine are arranged on the angle adjusting rotary table; the angle adjusting rotary table comprises a track plate and a rotary table, and the rotary table drives the track plate to rotate; a breaking hammer is arranged at one end of the track plate, and a rock cracking machine is arranged at the other end. The breaking hammer and the rock cracking machine are integrated at the front end of the heading machine, pre-broken rock can be split, the number of times of breaking is reduced, vibration and noise caused by repeated breaking are avoided, the internal stress of a rock stratum is damaged by additionally arranging the rock cracking machine, other work of the whole machine is not affected, and the service life of the heading machine is not affected.

The invention relates to a bridge bent cap dismantling construction method, and belongs to the technical field of bridge reconstruction and extension construction. The method aims at solving the technical problems that a traditional dismantling process is low in efficiency and high in safety risk, and a reserved structure is prone to being damaged. According to the technical scheme, the method comprises the steps that cutting, blocking and hoisting equipment is planned according to the size and weight of the bent cap; a diamond wire sawing machine is adopted for cutting, and lifting force is continuously applied by hoisting equipment in the whole cutting process; construction is carried out according to the sequence that a bent cap main body part between the pier columns is cut off firstly, then a supporting system and an operation platform are erected on the pier columns, and then bent cap cantilever parts on the outer sides of the pier columns are cut off; and finally, crushing treatment and column top fine chiseling are conducted on a platform, the elevation is accurately controlled, and the steel bars are stripped. The method is mainly used for safe, efficient and accurate dismantling of the old bent cap in highway and urban bridge reconstruction and extension projects.

The invention relates to small-section rock tunnel construction integrated equipment and a construction method. The small-section rock tunnel construction integrated equipment comprises a heading machine, a spraying mechanism, a supporting mechanism and a transport vehicle, wherein the spraying mechanism and the supporting mechanism are carried on a heading machine vehicle body, and the transport vehicle corresponds to a slag outlet of a cantilever type heading device. The concrete wet spraying device and the anchor rod drilling device are carried on the upper portion of the cantilever type heading machine body, and uninterrupted continuous operation of tunneling, deslagging and supporting can be achieved by reasonably arranging the positions and the operation sequence of the concrete wet spraying system, the anchor rod drilling device, the deslagging vehicle and the concrete mixer truck. And meanwhile, participation of constructors is effectively reduced, manpower is saved, and the efficiency and safety of tunnel construction are improved.