288 results about "Dead weight" patented technology

The utility model provides an active dynamic balancing device based on a tower crane. The active dynamic balancing device comprises a tower body, a working arm and a balancing arm, wherein the working arm and the balancing arm are fixedly mounted on two sides of the top of the tower body respectively; a water storage tank and a balance water tank are fixedly mounted on the balance arm, and the bottom of the water storage tank is communicated with the balance water tank through a connecting pipeline; and a control valve group for controlling water distribution between the water storage tank and the balance water tank is arranged on the connecting pipeline. According to the utility model, the balance weight of the balance arm is designed into the capacity-adjustable water tank, the working moment is balanced by utilizing the moment generated by the dead weight of the water body, the volume of the balanced water body is adjusted in real time according to requirements, so that the moment is changed, and the quantity of the water body distributed in the water storage tank and the balanced water tank is adjusted in real time according to the working moment. And the balance moment is synchronously equal to the working moment in real time.

The application relates to a device and method suitable for precise positioning of steel pull rods of arch feet of steel truss arch bridges, the device comprising a first positioning steel plate and a second positioning steel plate, the length of the steel pull rod in the concrete arch support foundation being L, L being divided into n sections, the first positioning steel plate being arranged at a starting point node, the second positioning steel plate being arranged at intermediate nodes, and a lower bearing plate being arranged at an end point node, a plurality of through holes being arranged on the first positioning steel plate and the second positioning steel plate, the through holes being used for the steel pull rod to pass through, the positions of the first positioning steel plate and the second positioning steel plate being fixed through four coordinates, steel frame structures being arranged between the first positioning steel plate and the second positioning steel plate, adjacent second positioning steel plates, the second positioning steel plates and the lower bearing plate, and the steel frame structures being welded with the first positioning steel plate and the second positioning steel plate. The application can position the steel pull rod, avoid the steel pull rod from being deflected under the dead weight or being deformed under the impact of concrete pouring, and ensure that the long steel pull rod is perpendicular to the upper and lower bearing plates during construction.

The utility model discloses a combined photovoltaic support which comprises a first base which is driven into the ground below the head of a bearing plate, the upper surface of the first base is provided with a first supporting pipe, the top of the first supporting pipe is provided with a first hinged support, and the lower surface of the head of the bearing plate is provided with a hinged shaft hinged to the first hinged support; the second base is driven into the ground below the head of the bearing plate, a second supporting pipe is arranged on the upper surface, and an outer sleeve slidably sleeves the outer side of the top of the second supporting pipe; a first opposite-pull hole is formed in the pipe wall of the second supporting pipe, and a second opposite-pull hole is formed in the wall of the outer sleeve; the supporting rod is arranged at the top of the second supporting pipe, a second hinge support is arranged at the top of the supporting rod, a rotating block is hinged into the second hinge support, a sliding groove is formed in the rotating block, and a sliding rod is arranged on the bearing plate. The height of the tail part of the bearing plate is adjusted by matching the outer sleeve with the second base, so that the angle of the bearing plate is adjusted, the structure of the tracking type photovoltaic bracket can be effectively simplified, the overall dead weight of the device is reduced, and the requirement on the ground bearing capacity is reduced.

The invention relates to the technical field of bridges, and provides a segment-assembled corrugated steel web mixed girder bridge and a construction method thereof.The areas, close to bridge piers, of side spans and middle spans are composed of first-class girder sections, and each first-class girder section comprises a first concrete top plate, a first concrete bottom plate and a first corrugated steel web; the midspan area is composed of a second type of beam sections and comprises a steel bottom plate, an ultra-high performance concrete combined top plate and a second corrugated steel web; and the combined beam section is connected between the two beam sections to realize smooth transition. Through the longitudinal partition structural design, the advantages of the respective materials are fully played, the side span-mid span ratio can be compressed to 0.35-0.60, and the span capacity is remarkably improved. An ultra-high-performance concrete combined top plate is adopted in the midspan, and the dead weight is reduced by 50%; the steel bottom plate is used for replacing a concrete bottom plate, and the cracking risk of the midspan bottom plate is thoroughly eliminated. Segmental prefabrication and assembly construction is adopted, the process is standardized, the adaptability to soft foundations is high, and the problems of midspan downwarping and web cracking are solved.

The utility model provides an adjustable support structure which comprises a main arm, a fixed arm, a first movable arm, a second movable arm, a driving arm, a driving device, a first frame and a second frame. The fixed arm is fixed with the main arm; the first and second movable arms are hinged to two ends of the main arm; the driving arm is inserted into the inserting groove of the first movable arm to be in sliding fit, the fixed position is adjusted through the limiting groove, the positioning hole, the positioning bolt and the fastening nut, the driving arm is hinged to a cylinder piston rod, and the two ends of the cylinder are hinged. The left sides of the first frame and the second frame are hinged through a hinge, and the fixed arm and the second movable arm are hinged to the two frames respectively. The self-weight of the second frame is shared by the hinge and the support, and the hinge load is reduced; the driving arm can be installed by being matched with the driving device, the air cylinder drives the driving arm to drive the first movable arm, rotation of the support and the second frame is achieved, the problems that a traditional structure is prone to damage and poor in installation adaptability are solved, and structural stability and driving flexibility are improved.

The utility model relates to the technical field of precast beam processing, in particular to a high-bearing self-adjusting T-shaped beam support embedded part, which provides a stable horizontal bearing surface for a beam main body through a bearing structure, reduces the problem of ground sinking and inclination caused by the dead weight of the beam body, and provides support for the beam main body or a main body template through a support structure. The supporting position of the supporting structure can be conveniently adjusted through the adjusting structure, and the practicability of the device is improved; comprising a bearing structure, a supporting structure and an adjusting structure, the supporting structure is installed on the bearing structure, and the adjusting structure is installed on the supporting structure.

The application discloses a hoisting robot and a transverse moving and turning and self-lifting method thereof. The hoisting robot comprises a hoisting device, a walking underframe, a walking device, a tension-resistant lightening device and a movable track. The walking device is placed on the movable track. The hoisting robot can be shifted along the movable track. When the walking underframe bears a compressive load, the walking wheel can contact the movable track, and the movable track bears the compressive load borne by the walking underframe. When the walking underframe bears a tensile load, the tension-resistant lightening device can contact the movable track, so as to increase the overturning moment resistance of the hoisting robot, replace the conventional means of lifting the overturning moment resistance by using the dead weight, achieve the purpose of reducing the dead weight of the hoisting robot, effectively improve the load-to-dead weight ratio of the hoisting robot, realize the lightweight design of the hoisting robot, and avoid the situation that the lower supporting structure of the hoisting robot needs to be reinforced or temporarily supported due to the excessively large dead weight of the hoisting robot.

The utility model relates to a steel ladle upper nozzle brick which comprises a nozzle brick upper section and a nozzle brick lower section, the lower end face of the nozzle brick upper section is connected with the upper end face of the nozzle brick lower section through a fire clay connecting layer, an upper cast hole channel is arranged in the nozzle brick upper section, a lower cast hole channel is arranged in the nozzle brick lower section, and the nozzle brick upper section is integrally sleeved in a seat brick. The upper portion of the nozzle brick lower section is sleeved with the seat brick, the lower portion of the nozzle brick lower section is sleeved with the mechanism base, a mounting plate is sleeved between the mechanism base and the seat brick, and joint filling fire clay layers are arranged between the outer side faces of the nozzle brick upper section and the nozzle brick lower section and the seat brick. The nozzle brick upper section and the nozzle brick lower section are combined and butted to form the nozzle brick single body, so that the volume and the dead weight of the upper nozzle brick single body are reduced, the manufacturing quality of the brick body and the transfer convenience after production and forming are improved, and the upper section or the lower section of the upper nozzle brick can be independently replaced according to the erosion condition after a certain furnace number is achieved. The utilization rate and the service life of the upper nozzle brick are improved, and the effects of reducing cost and improving efficiency are achieved.

The invention relates to a clamping system of an underfloor wheel lathe. The clamping system comprises a base, at least one pair of radial reverse clamping devices and at least one pair of radial supporting devices. The at least one pair of radial reverse clamping devices are arranged on the base, each pair of radial reverse clamping devices is axially symmetric about a defined axis, and each pair of radial reverse clamping devices can tightly press the wheel pair axle box through cooperation; the at least one pair of radial supporting devices is arranged on the base, each pair of radial supporting devices is axially symmetric about a defined axis, and each radial supporting device is used for supporting a wheel set axle box. Through the synergistic effect of the radial reverse clamping device and the radial supporting device, the radial cutting force and the dead weight of the wheel pair in the machining process are effectively resisted, the clamping rigidity and stability are improved, displacement and vibration of the wheel pair in the machining process are avoided, and the machining precision is ensured.

The invention relates to the field of metal stamping equipment, and discloses a stamping die for circular machine needle blank forming, which comprises a stamping platform, a stamping support is arranged at the top of the stamping platform, and a male die is arranged at the bottom of the stamping support; the connecting support is arranged on the stamping platform, two middle modules are arranged on the connecting support, first grooves are formed in the middle modules, two side modules are further arranged on the connecting support, the height of the side modules is lower than that of the middle modules, and second grooves are formed in the side modules. Compared with the prior art, in order to solve the problems that a small-size circular knitting needle blank is small in dead weight, small in interface gap and prone to retention after mold opening due to end special-shaped embedding, the female mold forming face is divided into the middle mold set and the side mold set, and the side mold set is driven to actively move downwards and be separated in the return stroke stage of the male mold; and the end part forming surface is firstly withdrawn and the enveloping constraint is relieved, so that the workpiece is prevented from being ejected out in an unbalanced loading manner by depending on an ejector pin or an ejector plate in a state that the end part is still clung to the cavity.

The application provides a stair structure with self-resetting controllable friction energy dissipation and a construction method thereof, which comprises a prefabricated rest platform beam plate, the prefabricated rest platform beam plate comprises rest platform beams and rest platform folded plates, a prefabricated stair section is arranged between two rest platform beams, and a self-resetting friction assembly is arranged at the connection position of the prefabricated stair section and the rest platform beam; the self-resetting friction assembly comprises horizontally arranged horizontal friction buffer blocks and self-resetting friction supports, and the self-resetting friction support is composed of an upper inclined friction block, a lower inclined friction block and a pressure spring sliding support which are sequentially penetrated by a connecting screw rod. The self-resetting of the inclined surface and the dead weight after the sliding of the stair section is adopted, and the vibration energy is dissipated by the friction surface, so that the anti-seismic performance of the stair and the building is effectively improved, and the anti-seismic performance, reliability, economy, durability and adaptability are better than those of other schemes.

The application discloses a kind of semi-covering layer semi-bedrock foundation gravity dam foundation seepage prevention water stop design method, belong to the field of hydraulic engineering design.This application method is aimed at the complex conditions of semi-covering layer semi-bedrock foundation, adopts zoning combination seepage prevention scheme: bedrock region sets seepage prevention curtain, covering layer region sets seepage prevention wall;Comprehensive construction period structure dead weight, running period structure dead weight, water pressure, uplift pressure and other loads, design seepage prevention wall top and dam foundation embedded joint and dam bottom local structure, reserve deformation and with two purple copper water stop to realize water stop by asphalt mortar joint filling;Finally, the rationality of scheme is verified by three-dimensional finite element seepage deformation numerical calculation.This application breaks through the limitation of traditional design, provides quantitative design method, and has strong operability, provides technical support and reference for similar projects.

The utility model relates to the technical field of bearing cap cleaning, and discloses an automatic bearing cap cleaning device which comprises a shell, a conveying belt is arranged in the shell, a plurality of fixing boxes are arranged at the top of the conveying belt, pressing rings are slidably connected into the fixing boxes, two driving blocks are fixedly connected to the inner walls of the pressing rings, and the driving blocks are fixedly connected to the inner walls of the pressing rings. A positioning column is fixedly connected to the inner wall of the fixing box, two driven grooves are formed in the positioning column, first springs are fixedly connected to the inner walls of the tops of the driven grooves, two rotating plates are rotatably connected to the inner wall of the positioning column, and driven blocks are fixedly connected to the bottoms of the sides, far away from each other, of the two rotating plates correspondingly. According to the utility model, mechanical transmission is triggered by utilizing the dead weight of the bearing cover, additional driving is not needed, the clamping blocks can be automatically attached to the edges of the bearing covers with different specifications, axis calibration is realized by matching with the positioning column, and the fixing precision and universality are ensured.

The utility model discloses a hollow arch board for building construction, including board main body, and board main body is integrally extruded by light material, the board main body is as a whole arch structure, and is equipped with arch toe on both sides, the board main body is hollow structure, and is equipped with a plurality of webs inside, and the web divides the board main body inside into multiple continuous rectangular, triangle or trapezoidal hollow cavities, the utility model discloses integrally extruded by light material such as PVC or aluminum alloy, has reduced the dead weight of board significantly, and the board is as a whole arch structure, and then combines the web set up inside, has formed the stable mechanical structure, can effectively disperse pressure, has avoided the problem that the bending stiffness of flat plate structure is low and can not satisfy the bearing demand.

The application discloses a kind of northern cold water body anti-ice expansion self-lifting ecological enclosure systems, belong to aquatic ecological restoration technical field, the system includes: enclosure main body;Mechanical lifting cylinder type column, including fixed bottom column and sliding sleeve in its inside lifting column, fixed bottom column lower end is anchored to water bottom, lifting column upper end is fixedly connected with enclosure main body;Floating body assembly, fixedly connected to the top of lifting column;And counterweight, set in the lower part of lifting column, ice cover is frozen as a whole with floating body assembly when icing, the upward jacking force generated by ice layer frost heaving drives lifting column to slide upwards along fixed bottom column, so that enclosure main body is lifted as a whole to above ice layer frost heaving influence area;After ice layer melts, enclosure main body is automatically dropped to the design water level position under the joint action of dead weight and counterweight gravity, and the lifting mechanism is pure physical passive self-adapting structure, without any electrical or mechanical drive, fundamentally solve the technical problem that traditional enclosure is torn and damaged due to ice layer frost heaving in northern cold water body.

The utility model discloses a plate spring support which comprises a support body used for connecting a girder and a plate spring body and a limiting assembly, the support body is provided with a side extending plate capable of supporting the bottom wall of the girder, the support body is provided with a first wall and a second wall which are arranged in parallel, and the first wall is perpendicular to the side extending plate and attached to the side wall of the girder. The limiting assembly is installed on the frame body and connected with the girder and the plate spring body. The weight of the support can be reduced while the structural strength is guaranteed, and the dead weight of the whole vehicle is reduced.

The utility model relates to the technical field of stabilizer adding, in particular to a stabilizer adding device. The stabilizer adding device comprises a feeding pipe, a conical base with an upward conical head is fixedly embedded in the bottom of the feeding pipe, and a plurality of annularly-distributed material distribution openings are formed in the pipe body, close to the conical base, of the feeding pipe. A rotating cover is installed at the bottom of the conical base, a U-shaped material distributing frame is installed on the rotating cover, and a swing assembly used for adjusting the discharging angle of the U-shaped material distributing frame is installed at the bottom of the rotating cover. According to the stabilizer adding device provided by the utility model, the conical base at the bottom of the feeding pipe is combined with the annular material distributing port and is matched with the inclined structure and the blanking hole of the U-shaped material distributing frame, and the U-shaped material distributing frame is driven to swing by utilizing the dead weight of a stabilizer under the linkage action of the swinging component, so that the multi-stage dispersion of the stabilizer is effectively realized, and the stability of the stabilizer is improved. And the local accumulation phenomenon is avoided.

The utility model relates to a skeleton partition wall board and a partition wall, the skeleton partition wall board comprises a partition wall board body, the partition wall board body comprises a filling board and skeletons, the skeletons are arranged on the front surface and the rear surface of the filling board, and the filling board is clamped and fixed between the two skeletons; pipeline grooves for accommodating pipelines are formed in the left side and the right side or the left side, the right side, the upper end and the lower end of the filling plate; at least one of the front surface and the rear surface of the filling plate is provided with a bottom box reserved block, the framework is provided with a bottom box reserved frame used for containing the bottom box reserved block, and after the framework clamps the filling plate, the bottom box reserved block is contained in the bottom box reserved frame. According to the framework partition wall board and the partition wall, the overall thickness and self weight of the partition wall board and the partition wall can be reduced, and the use amount of keel steel can be reduced.

The utility model discloses a road road sealer, including the baulk, the towrope, the pivot and the drive arrangement, the pivot verticality is established, and the drive arrangement is connected with the pivot transmission, and the drive arrangement is used for driving the pivot rotation, the baulk is along the direction perpendicular to the pivot and is established, and one end of baulk is connected with the pivot, one end of the towrope is connected with the pivot, and the other end of the towrope is connected with the baulk, and the connecting point of pivot and the towrope is higher than the connecting point of pivot and the baulk, and the connecting point of the towrope and the baulk is close to one end of the baulk and away from the pivot. The technical effect reached is: through the pivot drive baulk horizontal horizontal rotation to carry out the road interception, and through the towrope auxiliary tow baulk, the overall structure is stable, can significantly reduce the flexure deformation of baulk because of dead weight and wind load, makes it still can keep stable operation under the condition of super long span, can greatly extend the applicable length of baulk, breaks through the span limit of traditional road sealing device, is especially suitable for wide road, large span tunnel etc. scene.

The invention belongs to the technical field of elevators, and discloses an elevator car hoisting rope breakage protection device which comprises a support shell, when a hoisting rope breaks, the hoisting rope is subjected to elastic deformation of a tension spring and the dead weight of a bearing plate, the bearing plate descends in a square box, the bearing plate drives a rotating plate and a moving plate to descend, and the hoisting rope is broken. The moving plate drives the sliding block to transversely move along the inner wall of the sliding groove, the moving plate drives the conversion box and the concave shells to transversely move, the two concave shells are far away from each other, when the concave shells drive the round rod and the clamping roller to move to the side wall of the clamping plate, the clamping roller and the clamping plate generate clamping extrusion, and therefore the high-speed falling phenomenon of the lift car is prevented. And the safety of workers is ensured. Due to the fact that the outer wall of the clamping roller is circular, when the clamping roller makes contact with the clamping plate, too large instant resistance cannot be generated, the lift car drives the guide rail block to descend slowly on the inner wall of the guide rail, and the device is prevented from generating violent impact force.

The utility model discloses a kind of permanent magnet motor assembly devices, belong to motor assembly technical field.The utility model includes support platform and locking mechanism, and the rotating groove is opened in support platform, rotating groove is matched with rotary table, and the bottom end of rotating groove is vertically matched with rotating shaft, and the round hole of cooperation rotating shaft is opened in rotary table, locking mechanism has worm and worm wheel, worm and worm wheel engage, and the perforation is opened in support platform, and the perforation is interconnected with rotating groove, worm is threaded through perforation and extends to outside of perforation, and worm wheel is sleeved in the bottom end of rotating shaft.The utility model is locked to rotary table by the locking mechanism set, since worm and worm wheel mechanism has reverse self-locking function, when stopping rotating worm, rotary table cannot accidentally rotate due to motor dead weight or assembly vibration, compared with friction brake or manual locking structure, mechanical interlock is more reliable, effectively guarantee the stability of assembly process, and worm transversely threads through the perforation of support platform and is exposed, and operating personnel can directly force from device side.

The utility model discloses a small concrete building structure which comprises a main body part, an enclosure plate and a protective cover, the main body part is of a C-shaped structure, the enclosure plate and the protective cover are arranged at an opening of the main body part to form a closed space, and an opening and closing door is arranged on the side portion of the closed space; the main body part comprises a C-shaped seat and an interlayer, and the interlayer is arranged on the inner side of the C-shaped seat; an air conditioner is arranged in the interlayer so as to improve the physical environment of the closed space. The small-sized concrete building structure is reasonable in structure, and the forming efficiency is effectively improved by splicing and forming the prefabricated parts; the protective cover is made of tempered glass, so that a relatively sealed environment is provided for personnel operation; in addition, the main body part is formed by pouring concrete, so that the dead weight of the small concrete building structure is effectively increased, and the wind resistance is improved.

The invention relates to the technical field of railway open wagons, in particular to a side wall, an open wagon carriage and a railway open wagon. The side wall comprises the side wall plate and the lower side door, the side wall plate is provided with the opening, and the lower side door is arranged at the opening, so that the opening can be opened or closed; the side wall comprises a side wall plate, and the side wall plate and the lower side door are each of an integrally-formed fiber composite sandwich structure. According to the side wall, the open wagon carriage and the railway open wagon, the side wall plate and the lower side door are each of the integrally-formed fiber composite material interlayer structure, and the fiber composite material interlayer structures are light in weight and do not rust, so that the technical problems that in the related technology, the railway open wagon is large in dead weight and prone to rusting and corrosion can be solved, and the service life of the railway open wagon is prolonged. And the vehicle cargo transportation economy is improved.

The utility model discloses a high performance light weight aluminum alloy stand column section, belongs to stand column section technical field, including bottom plate, the annular flange that is equipped with bottom plate top surface divides bottom plate top surface into inner surface and outer surface, and at least three equiangular distribution's L type board is fixed on the inner surface, and hollow column is placed on the inner surface, and hollow column is located between annular flash and each L type board, and the screw rod that is threaded through hollow column and corresponding L type board is equipped with on three sides of hollow column, and the locking assembly for automatic locking when screw rod is tightened is equipped with in the inside of hollow column and baffle, and the locking assembly includes the spring fixed on the baffle, and the bolt fixed with spring can extend into the insertion hole arranged on the inner surface to prevent bottom plate and hollow column from separating. The utility model significantly reduces dead weight and has excellent bending resistance and torsional resistance, and is convenient for installation and dismounting maintenance.

The application belongs to the technical field of cable installation equipment, and particularly relates to a bearing type overhead cable installation equipment, which comprises a plurality of clamping discs connected in an up-down mode, a supporting rod installed on the top of the clamping disc, and a cable clamp installed on the top end of the supporting rod. The clamping disc is composed of two clamping plates which are in butt joint with each other. A telescopic connecting rod is arranged between the adjacent clamping discs in an up-down mode. A locking bolt for fixation is symmetrically arranged at one end of the clamping disc. The top of the uppermost clamping disc is provided with the supporting rod. A load-bearing hinge is arranged at the top end of the supporting rod. The supporting rod extends upwards, and the cable clamp is fixed on the load-bearing hinge. The multi-point fixation structure of the plurality of clamping discs uniformly disperses the cable load on the layered folds of the transformer bushing, avoids the downward pulling force / lateral pulling force formed by the cable dead weight and external force from directly acting on the bushing terminal, significantly reduces the risk of bushing sealing failure, insulation damage and fracture, and solves the core problem of mechanical stress concentration in the traditional installation mode.

The utility model relates to the technical field of vertical powerful mixers, in particular to a rotor bearing package structure of a vertical powerful mixer, which comprises a shell and a lubricating component. The lubricating assembly comprises an upper end cover, a lower end cover, a rotating shaft, a lower end bearing, a middle end bearing, an upper end bearing, an oil blocking groove, an oil pipe component, a lubricating oil pipe, an oil inlet pipe, a shaft body, a limiting groove, a mounting hole, a limiting plate and a round nut. The shell is used for guaranteeing the arrangement of an internal structure, the lower end bearing, the middle end bearing and the upper end bearing form a bearing bag, the upper end bearing and the lower end bearing bear the inertia moment of the rotating shaft, the middle end bearing bears the self weight of the rotating shaft, and therefore the balance stability is improved, and the oil pipe component is used for conveying lubricating oil to the lower end bearing. The middle-end bearing adopts the oil retaining groove for self-lubrication, and the upper-end bearing adopts external lubrication, so that the problem that the service life of equipment is short due to unbalanced stress of the whole bearing caused by poor bearing lubrication effect of the existing bearing package is solved.

The utility model relates to a kind of portal frame and machine tool, comprising: first crossbeam and reinforcing square tube, the cavity is formed in the first crossbeam inside, the first crossbeam extends horizontally, the reinforcing square tube extends longitudinally, the reinforcing square tube is inserted into first crossbeam longitudinally and is fixedly connected with first crossbeam.The first crossbeam of the utility model is divided into multiple segments by reinforcing square tube, the first crossbeam part of the lateral two sides of reinforcing square tube is different segment, the lateral two ends of segment are supported by support structure, and the lateral length of segment is shorter than first crossbeam, so the middle part of segment is more difficult to produce bending deformation due to external force or dead weight, the first crossbeam of multiple segments is also more difficult to produce deformation, and the movement accuracy of the drive mechanism installed on the first crossbeam is improved, and the machining accuracy of workpiece is finally improved.

The utility model relates to automobile parts transportation technical field especially automobile parts turnover suspension device, including hoisting subassembly, still including linkage subassembly, arc clamp subassembly, the lower end of hoisting subassembly is provided with linkage subassembly, the both sides of linkage subassembly all are provided with arc clamp subassembly, the utility model discloses through hoisting suspender to make the connecting plate, suspender whole pull high, because arc clamp subassembly dead weight effect, make arc clamp rotate around the junction of first connecting arm, further make the inside of arc clamp hold to the inside of automobile parts, to realize two arc clamp hold the operation of automobile parts, when automobile parts need to be released, only need to hoist and place automobile parts on the loading platform, along with the down pressure connecting plate of connecting plate and suspender, the inside of inserting slot moves down, second connecting arm rotates around first connecting arm at this moment, further make arc clamp rotate outward, improve the transport holding efficiency.

The utility model discloses a precast concrete combined ribbed beam composite slab with shear keys, which comprises a precast concrete combined ribbed beam bottom plate with shear keys and a cast-in-place layer, the bottom plate comprises a bound reinforcing mesh, the shear keys and precast concrete combined ribbed beams, the shear keys and the precast concrete combined ribbed beams are arranged on the bound reinforcing mesh, the shear keys are bound and fixed on the reinforcing mesh through reinforcing steel binding wires, and the cast-in-place layer is arranged on the precast concrete combined ribbed beams. The middle of the prefabricated concrete combined ribbed beam is high, the two sides of the prefabricated concrete combined ribbed beam are low, the middle of the prefabricated concrete combined ribbed beam is made of UHPC, the two sides of the prefabricated concrete combined ribbed beam are made of common concrete, a prefabricated bottom plate concrete layer with a certain height is poured on the lower portion of the reinforcing mesh and the lower portion of the prefabricated concrete combined ribbed beam, the reinforcing mesh is placed on a bottom plate of the prefabricated concrete combined ribbed beam with the shear keys, and then a concrete entity is poured. The prefabricated bottom plate can be better matched with bending moment distribution, the bonding performance of new concrete and old concrete is enhanced, shear damage caused by earthquakes or dynamic loads is resisted, the anti-seismic performance is improved, the self weight of the prefabricated bottom plate is reduced, and the service life of a midspan key area is prolonged.

The utility model relates to an efficient hexagonal brick hoisting clamp based on a self-weight clamping principle. The efficient hexagonal brick hoisting clamp based on the self-weight clamping principle comprises a main body bearing beam, clamping arms are symmetrically and movably arranged on the two sides of the main body bearing beam, the clamping arms are evenly distributed in the axial direction of the main body bearing beam, the clamping arms are connected with the main body bearing beam through hinge bolts, clamping hands are arranged at the movable ends of the clamping arms, and through holes are formed in the movable ends of the clamping arms; a clamping arm linkage rod is arranged in the through hole in a clearance fit and penetrating mode, limiting baffles are detachably arranged at the two ends of the clamping arm linkage rod, a hoisting connecting plate is eccentrically fixed to the top of the main body bearing beam, and hoisting holes are evenly formed in the hoisting connecting plate. According to the clamp, the mode of clamping through the dead weight of the clamping arms is simple and reliable, the clamp can adapt to channel construction of different gradients by adjusting the lifting points, and it is verified through actual engineering application that the clamp has the remarkable advantages in the aspects of improving the construction efficiency, reducing the labor intensity, guaranteeing the construction quality and the like.