2832 results about "Steel rope" patented technology

The present application relates to a pile driver and a pile driving method with less wear on drill rods, and relates to the technical field of building construction, and comprises a main frame, a winch is arranged on one side surface of the main frame, a steel cable is wound on the drum of the winch, a top frame is welded on the top of the drill rod bracket, one end of the steel cable extends upward through a pulley and is connected to a drive box through a lifting ring, a motor frame is arranged in the middle of the drive box, a drive motor is connected to the center of the motor frame through bolts, the bottom drive of the drive motor is connected to a reducer, and the bottom output end of the reducer is connected to a buffer mechanism through the drive box, and the buffer mechanism comprises a connecting tube, a rebound tube, a coupling joint, a strip groove, a slider, a damping rod, a support spring and an auxiliary spring; the present application significantly reduces the wear of the drill rod during the construction process by using a high-strength, wear-resistant alloy material to make the drill rod, performing special treatment, and arranging a buffer mechanism and a guide mechanism.

The invention discloses a mixed tower steel cable system parametric modeling method and system based on multi-body dynamics, and relates to the technical field of wind power generation. The method comprises the following steps: creating parameter points at the center of each end face of a concrete section according to geometric parameters, and establishing a mixed tower three-dimensional model; correcting the mass of each section of the mixing tower according to the material density of the mixing tower; simulating the characteristics of pressure resistance and non-tension resistance of the mixed tower, and establishing a contact and bonding relationship between concrete sections of the three-dimensional model of the mixed tower; obtaining design parameters of a steel cable in the mixed tower, constructing a steel cable parameterized model, and combining the steel cable parameterized model with the mixed tower three-dimensional model to obtain a mixed tower steel cable system parameterized model; and performing dynamic simulation on the operation condition of the fan to obtain a time domain response result of the parameterized model of the mixed tower steel cable system. According to the invention, the response characteristic analysis of the mixing tower under multiple working conditions and multiple structures is realized.

The invention relates to the technical field of cross-linked polyethylene cable accessories, and discloses a cross-linked polyethylene insulated cable overhead installation device which comprises a wire supporting rod, a hoisting steel cable, a cross-linked polyethylene insulated cable and a driving assembly, the driving assembly comprises a steel cable clamping block and a cable clamping block, and a steel cable pulley and a cable pulley which are vertically symmetrical are arranged in the driving assembly; a pushing assembly is arranged at the top of the steel cable clamping block and comprises a supporting transverse plate, a first telescopic rod, a rectangular frame, an upper supporting rod and a lower supporting rod, and locking clamps are sleeved outside the supporting transverse plate, the first telescopic rod, the rectangular frame and the upper supporting rod. When the driving assembly is pulled, the roller encoder measures the distance and controls the distance; the pushing assembly drives step by step, the steel cable clamping blocks are fixed firstly, then the cable clamping blocks are pushed by the same distance and then fixed, the clamps are pulled in a matched mode to be tightened, the device achieves accurate control over the distance between the clamps and the looseness of the cables, the cables are prevented from being too loose and abraded or too tight and damaged, the water blocking function is protected, the line stability is improved, and the operation and maintenance cost is reduced.

The invention discloses a steel cable surface wear detection method and device based on an improved YOLOv8n-seg model, and relates to the field of steel cable surface wear detection.The method comprises the steps that a steel cable surface image is collected, the real wear area and degree are marked, and a wear image data set is constructed; improving a YOLOv8n-seg model structure, replacing a traditional convolution module in a backbone network with an adaptive kernel convolution module, inserting a convolution self-attention mechanism module in front of a fast spatial pyramid pooling module, and introducing a multi-scale convolution attention module into a neck network; training an improved model by using the wear image data set; and inputting a to-be-detected image into the trained improved model, and outputting a predicted wear area and degree. By improving the structure of the YOLOv8n-seg model, the problems of missing detection and false detection of a traditional method are solved, and high-precision and high-efficiency steel cable wear detection is realized.

The utility model discloses a crane lifting rope limiting device in the technical field of crane lifting hooks, which comprises an anti-falling mechanism, the anti-falling mechanism comprises a hook, the hook comprises a connecting end and a hook body, the tail end of the hook body is fixedly connected with the lower end of the connecting end, an assembly groove is formed in the hook in a penetrating manner, a winding disc is rotatably arranged in the assembly groove, and the winding disc is fixedly connected with the hook body. A rotating shaft is movably inserted into the winding disc, the two ends of the rotating shaft are sleeved with anti-disengaging pieces, the head end of the hook body is fixedly connected with a limiting block, and the ends, away from the rotating shaft, of the anti-disengaging pieces abut against the limiting block. The limiting mechanism comprises a torsional spring arranged on the winding disc in a sleeving manner; during use, when the torsion spring drives the winding disc and the anti-disengaging piece to deflect upwards, a steel cable is unwound, at the moment, the limiting piece loses tension, meanwhile, the limiting piece is pushed to move upwards through the first spring, at the moment, the lifting rope is conveniently limited through the limiting piece, the possibility that the lifting rope continuously shakes in the hook body is reduced, and the lifting rope is more convenient to limit.

The invention relates to the technical field of pressure vessel main body welding, in particular to an alignment welding assembly for quickly welding a boiler barrel of an industrial boiler container, which comprises a first driving support piece, a second driving support piece is fixedly arranged on one side of the first driving support piece, and a left position control unit is fixedly arranged on a connecting seat on the left side of the first driving support piece; and a left position control unit is fixedly installed on the ground connecting base on the right side of the second driving supporting piece, a right position control unit is fixedly installed on the ground connecting base on the right side of the second driving supporting piece, a steel rope set is arranged between the left position control unit and the right position control unit, an inner welding assembly is installed in an inner barrel cavity of the boiler barrel, and an outer welding assembly is installed below the boiler barrel. According to the device, the left position control unit and the right position control unit are adopted to drive the steel rope set to rotate, the outer welding assembly is driven to quickly shift and weld along the longitudinal seam of the boiler barrel, and meanwhile, the inner welding assembly and the outer welding assembly can synchronously work to synchronously weld the inner and outer longitudinal seams of the boiler barrel; when the annular butt joint seam is welded, the boiler barrel and the pipe base synchronously rotate to be matched with the outer welding assembly and the inner welding mechanism, and rapid welding is achieved.

The utility model discloses a static calibration and calibration platform for a precise six-dimensional force sensor. The static calibration and calibration platform comprises a detection platform, and a calibration clamping table, a calibration and calibration module and a plurality of counterweight modules which are arranged on the detection platform. And the counterweight modules are respectively arranged at the calibration ends of the calibration module. The calibration module comprises a force loading tool, an X-axis force calibration assembly, a Y-axis force calibration assembly and a Z-axis force calibration assembly. The force loading tool is fixed on the top of the tested six-dimensional force sensor. The force loading tool comprises a sensor chuck and a cantilever beam frame fixed on the sensor chuck. According to the utility model, the force loading tool is matched with the steel cables and the counterweight modules in multiple directions to form a multi-direction and multi-dimensional force-torque system calibration system, the design is precise, the structure is simple and easy to realize, a worker can quickly complete the installation and detection calibration of the detected six-dimensional force sensor, the detection precision is ensured, and the detection efficiency is improved. The device structure is simplified and the device cost is reduced.

The utility model discloses an easy-to-disassemble steel structure construction platform which comprises a plurality of rows of first frame bodies and second frame bodies, the first frame bodies and the second frame bodies enclose a steel pylon and are connected with each other, and the first frame bodies and the second frame bodies are respectively connected with the steel pylon through bolts. The first frame body comprises a first supporting plate in bolted connection with the steel pylon and provided with a plurality of first connecting screw holes and a first walkway located at the upper end of the first supporting plate, and the second frame body comprises a second supporting plate in bolted connection with the steel pylon and provided with a plurality of second connecting screw holes and a second walkway located at the upper end of the second supporting plate. A first guardrail and a second guardrail are arranged on the upper portion of the first walkway and the upper portion of the second walkway respectively, the first walkway is further provided with a climbing plate, the climbing plate is connected with a ladder stand arranged in the vertical direction in a penetrating mode, and the ladder stand is connected to other adjacent first frame bodies in the height direction in the vertical direction. According to the utility model, adverse effects on the steel pylon can be reduced, the construction platform is convenient to mount and dismount, the construction efficiency of the steel pylon is improved, the safety is high, and economy and practicability are realized.

The invention discloses a photovoltaic field abrupt slope operation protection device which comprises a steel cable fixing assembly, the steel cable fixing assembly comprises two mounting assemblies which can be vertically arranged on a pile foundation or the ground, and a first steel cable and a second steel cable which are distributed up and down are transversely arranged between the two mounting assemblies; the number of the advancing assemblies is two, the advancing assemblies are slidably arranged between the first steel cable and the second steel cable, each advancing assembly comprises a frame body, a first advancing wheel is rotatably arranged on each frame body, and each first advancing wheel is in sliding contact with the top of the corresponding first steel cable; the two second advancing wheels are rotatably and transversely arranged on the two sides of the second steel cable, and the second advancing wheels are in sliding contact with the second steel cable; the two limiting assemblies are arranged at the positions, corresponding to the first advancing wheel and the second advancing wheel, of the frame body correspondingly. It can be ensured that a worker can safely, stably and conveniently work on the abrupt slope, and therefore actual use is facilitated.

A weightlifting system includes a frame with lower, middle, and upper pulley stations mounted therein. A load attachment structure is provided within the system. A cable-pulley system includes a plurality of fixed pulleys mounted to the frame, first and second moveable pulleys, and a floating load pulley mounted to the load attachment structure. A plurality of cables is collectively routed through the first and second movable pulleys, the plurality of fixed pulleys, the floating load pulley, and the lower, middle, and upper pulley stations. When a first pulling force is applied to a first cable end accessible from the lower pulley station, the first movable pulley and the load pulley translate. When a second pulling force is applied to a second cable end accessible from the upper pulley station, the second movable pulley and the load pulley translate. When a third pulling force is applied to a third cable end accessible from the middle pulley station, only the load pulley translates.

The invention discloses a flexible photovoltaic support based on a large-span steel cable structure, and relates to the technical field of flexible photovoltaic supports. Comprising two main supporting pieces which are symmetrically distributed, two steel cables which are symmetrically distributed are jointly and fixedly connected between the two main supporting pieces, and the two steel cables are jointly provided with a plurality of photovoltaic panels; the mounting seat is arranged between the two main supporting pieces; the two fixing columns are symmetrically distributed and are fixedly connected to the mounting seat; the two second supporting frames are symmetrically distributed and arranged on the adjacent fixing columns respectively, sliding grooves are formed in the second supporting frames, the sliding grooves of the second supporting frames are slidably connected with fixing pieces, the fixing pieces are fixedly connected with elastic liquid bags, and the fixing pieces are slidably connected with extrusion rings. Vibration of the steel cable is buffered through deformation of the extrusion rings and deformation of the elastic liquid bag, the vibration amplitude of the steel cable is reduced, dynamic stress superposition of the steel cable at the adjacent extrusion rings is weakened, the fatigue effect is relieved, and the stability of the overall structure is improved.

The utility model relates to the technical field of bicycle frame detection, in particular to a bicycle frame collision detection device which comprises a track support, a collision support and a movable supporting plate, the lower end of the movable supporting plate is slidably connected to the upper end of the track support, and the end of a steel cable is connected to the front end of the movable supporting plate. The device has the beneficial effects that the rail support is arranged and can be used for movably placing the movable supporting plate, the vehicle-mounted bicycle frame is fixed to the movable supporting plate, a bicycle is fixedly placed on the vehicle-mounted bicycle frame, the drive motor drives the steel rope to be tightened, and the movable supporting plate is driven to move on the rail support at a constant speed; after inertial collision with the collision support is generated and the vehicle stops, the state of the frame and the bicycle can be detected, whether loosening and damage occur or not can be detected, detection operation is facilitated, the collision support can move to adjust the collision distance, the device can adapt to collision tests of different distances, different types of materials can be changed at collision points, and different collision effects can be simulated.

The invention discloses a mixed tower steel cable pre-tightening force real-time monitoring method and system, and relates to the technical field of wind power generation. The method comprises the following steps: acquiring known dynamic characteristic data of the mixed tower steel cable under multiple working conditions and multiple structures; analyzing and screening key parameters which effectively represent the dynamic response, the system structure and the working condition load of the mixed tower steel cable system in the dynamic characteristic data by utilizing global sensitivity, and constructing a dynamic characteristic database according to the key parameters; constructing a structure-working condition-response relation neural network agent model by means of a neural network or a regression prediction method based on the dynamic characteristic database; and performing reverse calculation on real-time working condition data and motion response data sensed by the sensor by using the structure-working condition-response relation neural network agent model to obtain the pre-tightening force of the mixed tower steel cable. According to the invention, the pre-tightening force of the steel cable of the mixed tower can be accurately monitored in real time, and the pre-tightening force prediction of the mixed tower under the extreme working condition and the fault working condition is realized.

The invention discloses an intelligent monitoring device and method for a water body environment. The monitoring device comprises a platform base body (5), a propeller assembly (7), a water quality detector (1), a camera (4), a detection box (9), a main winch (32) and a main controller (31). The detection box is assembled and connected with a hoisting steel rope (321) of the main winch, and the main winch can lower and hoist the detection box; the propeller assembly is used for driving the monitoring device to autonomously move on the water surface. According to the monitoring device and method, automatic monitoring can be flexibly and efficiently carried out on the water body of the water area, aiming at a method for monitoring the floating objects on the water surface through machine vision, a two-dimensional wavelet convolution (WTConv2d) technology is used, multiple attention mechanisms are added, so that better feature representation is obtained, 5% of parameter quantity and calculation quantity of the model are reduced, and the accuracy of the model is improved. The calculation complexity of a water surface target detection task is reduced; and the model understanding capability is improved.

The invention provides a hoisting device for construction engineering, and belongs to the technical field of hoisting equipment, the hoisting device comprises a frame body, a hoisting mechanism and a clamping mechanism, the clamping mechanism comprises a hanging bracket and a clamping assembly, the hanging bracket is connected with the hoisting mechanism, the clamping assembly is arranged on the hanging bracket, and the clamping assembly comprises a first motor, a bidirectional screw rod, a synchronous pulley mechanism and a moving block; the first motor is fixedly installed on the hanging bracket, the two-way lead screws are symmetrically arranged on the two sides of the first motor and connected to the output end of the first motor through synchronous belt wheel mechanisms, the moving blocks are provided with threaded holes and sliding grooves, the two ends, in different rotating directions, of the two-way lead screws are connected with the moving blocks in a rotating mode through the threaded holes respectively, and the moving blocks are arranged on the hanging bracket in a sliding mode. When the hoisting device is used, inclination and movement of a heavy object in the hoisting process are reduced, the efficiency and safety of the whole process are improved, through the four steel ropes in the winch system, the heavy object can be more stable in the moving process, stress of each steel rope is reduced, and the service life of the steel ropes is prolonged.

The invention relates to a pile frame hoisting method, and belongs to the technical field of ship manufacturing. The pile frame hoisting method comprises the steps that the hoisting angle of a pile frame is set to be alpha, and the erecting angle of a variable-amplitude oil cylinder is set to be beta according to alpha and the pile frame; the gravity center of the pile frame is determined, two main lifting points and two auxiliary lifting points are arranged on the pile frame, the main lifting points and the auxiliary lifting points are connected with a single-hook lifting system through steel ropes, and the distance between the main lifting points and the single-hook lifting system is smaller than the distance between the main lifting points and the auxiliary lifting points and smaller than the distance between the auxiliary lifting points and the single-hook lifting system; and the upper end of the pile frame is lifted through the single-hook hoisting system, and the pile frame rotates around the dummy shaft seat until the included angle alpha is formed between the pile frame and the horizontal plane and then is lifted and moved to the position above the variable-amplitude oil cylinder, so that a hinge point is aligned with the front hinge seat. According to the scheme, by designing the supporting angle of the variable-amplitude oil cylinder and the hoisting angle of the pile frame, posture adjustment of the pile frame is achieved through the main hoisting point, cooperation of the posture of the pile frame is achieved through the main hoisting point and the auxiliary hoisting point, and meanwhile the later hoisting problem of the oil cylinder is solved.

The utility model discloses a cucumber planting climbing frame, and relates to the technical field of crop climbing devices. The climbing device structurally comprises a supporting stand column, a horizontal supporting beam, a reel, a climbing rope, a vine cleaner and a driving motor. The horizontal supporting beam is installed on the two supporting stand columns. The reel is installed on the two supporting stand columns through mounted bearings. A row of climbing ropes are installed on the reel in the length direction of the reel in a penetrating mode. The vine cleaner is mounted on the horizontal supporting beam; the driving motor is installed on the supporting stand column and used for driving the reel. The requirement for repeated use is considered through the structural design of the climbing frame, and the driving motor can control the reel to reel all the climbing ropes, so that a site can be quickly cleaned after harvesting is finished, and preparation is made for planting in the next season; due to the rapid installation design of the vine cleaner and the cleaning device for the tiny attachments on the surface of the steel wire rope, the installation and maintenance of the whole climbing frame become simple and rapid.

The invention provides a temporarily used land area measurer, and relates to the field of measurers. The temporarily used land area measurer comprises a storage box, a rope arrangement device is installed on the storage box, the rope arrangement device comprises a rope arrangement mechanism, multiple layers of single-row wound steel wire ropes are installed on the outer surface of a winding drum of the rope arrangement device, and a rope guide mechanism used for guiding the steel wire ropes to move is installed at the moving end of the rope arrangement mechanism; according to the temporarily-used land area measurer, the steel wire rope wound in multiple layers and single rows is adopted, the measurement distance is longer, the influence of wind power is smaller, the measurement result is more accurate, one end of the hemisphere makes contact with the tail end of the outermost layer of the steel wire rope, the hemisphere can make contact with the edge of one end of the steel wire rope of the next layer, and the measurement accuracy is improved. When the rope arrangement work is switched to the next layer, the scale, pointing to the dial, of the pointer is changed, and therefore the size can be measured through calculation of the counter according to the number of winding layers of the steel wire rope.

The invention discloses an aquaculture net cage of an offshore wind power foundation, a working method of the aquaculture net cage and an offshore wind power jacket, and belongs to the technical field of offshore wind power jacket foundations.The aquaculture net cage comprises a netting forming an aquaculture cavity, the top of the netting is open and connected with a working platform, and the bottom of the netting is connected with a rigid frame; the working platform is connected with the rigid frame through a plurality of frame lifting steel ropes, the netting is provided with a plurality of tensioning assemblies, each tensioning assembly comprises a netting tensioning rope and a pulley, after the netting tensioning rope movably penetrates through the pulley, one end of the netting tensioning rope is connected to the rigid frame, the other end of the netting tensioning rope is connected to the working platform, and the netting tensioning rope is provided with a dismounting part. Spatial reuse with an offshore wind power jacket can be realized, the culture net is convenient to fold and unfold, the structure is relatively stable after installation and adapts to different offshore weathers, and the maintenance cost is reduced through the structural design of flexible lifting and flexible disassembly. The offshore wind power jacket auxiliary facility with environmental adaptability and maintenance convenience is formed.

The utility model belongs to the technical field of building space structures and cable truss structures, and particularly relates to an inhaul cable space crossing device which comprises a cable penetrating connector, the two ends of the cable penetrating connector are detachably connected with connecting parts used for being fixedly connected with a steel cable respectively, and a hollow round long hole used for allowing another steel cable to penetrate through is formed in the middle of the cable penetrating connector. And an anti-friction part is wrapped outside the hollow round long hole. By means of the device, the steel cables can be crossed on the same plane, friction loss between the steel cables is avoided, radial component force cannot be generated, and the device is simple in structure and has the advantages of being convenient to install and low in cost compared with connection through a connecting plate.

The invention discloses an anti-unmanned aerial vehicle aircraft based on rotary cutting, and belongs to the technical field of unmanned aerial vehicle countering. The aircraft comprises a seeker cabin, a steel rope cabin, an instrument cabin, a power cabin, a steering engine cabin and a parachute pack cabin. An infrared seeker is arranged in the seeker cabin; the steel rope cabin can independently rotate relative to the front cabin section and the rear cabin section under driving of the motor and release the flexible steel rope wound in the steel rope cabin, the motor drives a shell of the steel rope cabin to rotate at a high speed and drives the flexible steel rope to rotate at a high speed, and therefore rotary cutting of the target unmanned aerial vehicle is achieved. A main power supply, a control computer, a data chain and an inertial navigation device are arranged in the instrument cabin; the power cabin provides patrol flight power for the aircraft; a steering engine for controlling the rudder wings to rotate is arranged in the cabin, and a pressurizing device for pressurizing the parachute pack cabin is arranged in the parachute pack cabin; the target unmanned aerial vehicle is softly killed, the application range is wide, and the problem that the cost-effectiveness ratio of an existing anti-unmanned aerial vehicle aircraft is relatively low can be effectively solved.

The invention discloses an intelligent rear feeding double-pushing-handle continuous corner cutting station. Comprising an air floating workbench mechanism, an X-axis main machine sawing mechanism, an X-axis aligning mechanism, a first control unit module, a pneumatic film covering table mechanism, an X-axis moving aligning mechanism, an auxiliary workpiece clamping mechanism, a main workpiece clamping mechanism, a main workpiece clamping movement guide rail mechanism, a transition sliding table mechanism, a transfer auxiliary manipulator mechanism, an excess material conveying mechanism, a Y-axis main machine sawing mechanism and an unpowered roller table mechanism. The second control unit module comprises a Y-axis feeding guide rail mechanism, a 90-degree lifting rotating mechanism, a Y-axis workpiece clamping mechanism, a Y-axis pushing mechanism, a steel cable lifting table mechanism and an external feeding mechanism; the X-axis main machine sawing mechanism comprises an X-axis cutting device; the Y-axis main machine sawing mechanism comprises a Y-axis cutting device; the main clamping mechanism and the auxiliary clamping mechanism are used for clamping different plates and then synchronously feeding the plates into the X-axis cutting device, the 90-degree lifting and rotating mechanism is used for lifting the plates and then rotating the plates by 90 degrees, and automatic plate rotating design is achieved.

The utility model relates to the technical field of zeolite rotating wheel assembling, in particular to a zeolite rotating wheel assembling structure which comprises an assembling frame, a supporting frame is installed in the assembling frame, one side of the supporting frame is connected with a rotating frame, one end of the rotating frame is provided with a limiting block, one side of the limiting block is connected with a rotating wheel frame, and a zeolite rotating wheel block is installed in the rotating wheel frame. A positioning rear cover is arranged on the outer side of the zeolite rotating wheel block, a protective steel cable is installed on the outer side of the positioning rear cover, and a positioning screw rod is further arranged on the assembling frame. According to the scheme, the possibility that operation is inconvenient during installation due to the fact that the overall size of the zeolite rotating wheel is too large is reduced, the possibility that the zeolite rotating wheel is disconnected due to incomplete assembly in the working process is reduced, the modular design of the device is improved, each small block can be independently replaced or maintained, and due to the design, installation and maintenance are more convenient and faster; and the safety of the device is improved, the stability of the zeolite rotating wheel in the using process can be ensured, and accidents are avoided.

According to the compressed air energy storage large-tank type ultra-large-volume gas storage sealing layer defect detection device and the construction method thereof, the device is applied to a secondary lining layer of a gas storage, and the apparent state of the ultra-large-volume gas storage sealing layer is captured; the device comprises a circular rock anchor beam, a main cross beam, an uplink lifting platform, a telescopic steel bracket, an upper pan-tilt camera, a downlink lifting platform, a lifting steel cable and a lower pan-tilt camera, the method comprises the following steps: S1, installing and debugging the detection device; s2, appearance shooting of the sealing layer; s3, influence data learning and analysis; s4, determining the defect position of the sealing layer; according to the method, simple mechanical structure design and optical camera shooting equipment are combined, the apparent condition of the sealing layer of the gas storage can be quickly and accurately captured, the obvious advantages of being easy to operate, safe, efficient, economical and practical are shown, and the method is an excellent scheme for solving the problem of defect detection of the sealing layer of the large-tank type ultra-large-volume gas storage.

The utility model provides a lifting pedestal of a hooked bar construction platform, which is characterized in that a jig frame is arranged between a first operation platform and a second operation platform, lifting devices are arranged on the first operation platform and the second operation platform, and the lifting devices jack a first lifting operation unit on the first operation platform; according to the structure of the lifting device, hook bar bending and welding equipment is arranged on a first lifting operation unit, lifting oil cylinders are symmetrically arranged at the two ends of one side of the first lifting operation unit, lifting guide wheels are arranged at the ends of telescopic rods of the lifting oil cylinders, one end of a lifting steel cable is connected with the first lifting operation unit, and the other end of the lifting steel cable bypasses the lifting guide wheels to be connected with the operation platform frame. The defects of an original single-side motor driving lifting mode are overcome, and the lifting operation efficiency and safety of the automatic feeding mechanical arm and the welding mechanical arm on the inner cavity platform and the outer cavity platform are greatly improved by fully utilizing the mechanical mechanics principle and the synchronous control technology.

The invention relates to the technical field of plate shearing, and provides an automobile stamping part plate shearing machine which comprises a frame mechanism, an adjusting mechanism and a shearing mechanism. According to the plate cutting device, after a plate needing to be cut is placed on the base, the plate is inserted between a pressing wheel and the base, the pressing wheel moves upwards, accordingly, a rotating arm rotates, a rotating shaft rotates and drives a cam set to rotate, and at the moment, the cam set can rotate in the direction of a sliding frame; according to the plate shearing device, a cam in contact with a steel cable can push the steel cable of the contact part outwards, so that the top end of the steel cable is pulled downwards, a first sliding block is driven to move downwards, and a slope pushing block can push a sliding frame to the direction of a rear plate after making contact with a shearing mechanism. By means of the technical scheme, the technical problem that in the prior art, a blade gap adjusting structure is inconvenient to maintain is solved.

The invention belongs to the field of tunnel supporting, and particularly relates to a self-adaptive large-deformation 3D printing tunnel supporting structure and a dynamic adjusting method. In order to solve the problem that the damage risk of the supporting structure is increased due to large deformation in existing tunnel excavation, the supporting structure comprises a plurality of in-situ printed concrete units, grid nodes, a steel cable, a jack and a control system, and the tension of the steel cable can be adjusted through the jack according to data collected by a stress-strain sensor; the concrete arch frame deforms along with the deformation of the tunnel; according to the method, the tension of the steel cable is adjusted according to the real-time monitoring condition of the stress-strain sensor, so that the concrete arch frame is changed, self-adaptive adjustment of the concrete arch frame is achieved, stress balance of the concrete arch frame is achieved, the possibility that the concrete arch frame is damaged is reduced, and the structural integrity of the concrete arch frame is guaranteed.

The invention relates to the technical field of hoisting equipment, and discloses material hoisting equipment for constructional engineering, the material hoisting equipment comprises two fixing frames, an outer support, a winch and a cage, the two fixing frames are symmetrically mounted on a building platform, the outer support is hinged to the fixing frames, and a first steel rope on the winch winds around the outer support to hoist the cage; after the winch lifts the lifting cage to the platform where the fixing frame is located through the first steel rope, the first steel rope pulls the outer support to rotate, so that the lifting cage is transferred to the platform, and through structural innovation and safety design, the operation problem of traditional lifting equipment in a space limited scene is effectively solved; the lifting cage is more suitable for material lifting operation after a main body structure of a low-rise building is completed, the lifting cage is vertically lifted to the height of the platform firstly through winding of the first steel rope, then the outer support is pulled to rotate, the lifting cage is stably transferred to the platform, and the construction efficiency and safety are improved.

The utility model belongs to the technical field of two-way pipes, in particular to a hot forging two-way pipe fitting, which comprises a two-way pipe main body, the bottom of the two-way pipe main body is communicated and fixed with a lower through pipe, and two ends of the two-way pipe main body and the bottom end of the lower through pipe are fixedly connected with first sealing rings. The movable ring is moved, the movable ring drives the connecting block to move through the flexible steel rope, the connecting block drives the clamping pin to slide on the fixing rod and compress the first spring, the mounting block on the second sealing ring is inserted into the cavity, and when one side of the first sealing ring makes contact with one side of the second sealing ring, force applied to the movable ring is released at the moment; when the pipeline is connected with the two-way pipe fitting, the first spring in a compressed state resets, the first spring drives the corresponding clamping pin to be clamped with the clamping groove, and therefore the pipeline and the two-way pipe fitting are connected, the moving ring is moved during disassembly and assembly, operation is simple and convenient in the disassembly and assembly process, and meanwhile through the arrangement of the first sealing ring and the second sealing ring, the sealing effect is good. And the stability and the sealing performance after connection are improved.

A pull-out table with a single slide rail including a table frame, first and second table boards symmetrically disposed on the table frame, an extended table board disposed between the first and second table boards, and a sliding rail assembly, is provided. The sliding rail assembly including rope winding wheels is disposed on an inner frame on one side of the table frame along a length of the table frame. The rope winding wheel on one end of the inner frame is cooperatively linked to the rope winding wheel on the other end of the inner frame through a synchronously wound steel rope. The first and second table boards are respectively connected to an upper part and a lower part of the steel rope through respective slider seats. When one of the table boards is pulled, the other table board is driven to move in an opposite direction.