618 results about "Cross connection" patented technology

The invention discloses an air conditioner with a grille, relates to the technical field of air conditioners, and aims to solve the problem that the air resistance at an air outlet grille of an outdoor unit in the prior art is relatively large. The air outlet grille of the air conditioner with the grille comprises a positioning part, a supporting part and a grille net. The positioning part is close to the ventilation opening and connected with the machine shell. The supporting part is located in the positioning part. The grating net comprises a plurality of connecting parts, a plurality of outer grating strips and a plurality of inner grating strips. The connecting parts are located between the supporting part and the positioning part and distributed around the supporting part at intervals, and the supporting part is connected with the positioning part through at least part of the connecting parts. The multiple outer grating strips are located between the positioning part and the supporting part and distributed at intervals in the radial direction of the positioning part, and the multiple outer grating strips are connected with at least part of the connecting part in a crossed mode. The multiple inner grid strips are located on the air inlet sides, close to the draught fan, of the outer grid strips in the axial direction of the air outlet grid, and the inner grid strips and the outer grid strips are arranged at intervals. The air conditioner with the grating is used for exchanging heat with air.

The invention discloses a tunnel construction method for a large deformation section of soft rock, and relates to the technical field of tunnel construction for the large deformation section of the soft rock, and the tunnel construction method for the large deformation section of the soft rock comprises the following steps: drilling shallow large-aperture stress release holes and deep small-aperture stress release holes to form a layered release system; differential pressure grouting is conducted around the stress release holes, and a deep reinforcing ring and a shallow coupling ring are formed; a steel frame is erected, and a three-stage stretching locking bottom supporting assembly is installed to form a closed supporting ring; the bottoms of the adjacent steel frames are crossly connected through prestressed pull rods to form an integral rigid grid; a secondary lining is constructed after the longitudinal attenuation conduction period is judged according to the surrounding rock deformation spatial-temporal characteristics; inverted arch first and then arch wall segmented pouring is adopted, and a delayed expanding agent is doped into arch wall concrete. The method can effectively control surrounding rock deformation in the tunnel construction process of the large deformation section of the soft rock, improves the overall rigidity and stability of a supporting system, ensures that the lining is tightly attached to the surrounding rock, and reduces the construction risk.

The hatching tray comprises a base body frame, a plurality of transverse connecting frames and longitudinal connecting frames which are connected in a crossed mode are arranged in the base body frame, a plurality of sawteeth are arranged on the bottom edges of the transverse connecting frames and the longitudinal connecting frames at intervals, the transverse connecting frames and the longitudinal connecting frames form a plurality of egg support spaces, and egg support units are arranged in the egg support spaces. Each egg support unit comprises two arc-shaped bodies which are oppositely arranged, the tops of the arc-shaped bodies are provided with a plurality of protrusions with the inner side faces inclining outwards so as to support hatching eggs, the ends of the arc-shaped bodies are connected to the sawtooth bottom ends of the transverse connecting frames, and the outer arc faces of the arc-shaped bodies are fixed to the sawtooth bottom ends of the longitudinal connecting frames. A plurality of ventilation grooves are formed in the side face, parallel to the longitudinal connecting frame, of the base body frame, the hatching tray is good in permeability in the horizontal direction, and the hatching effect is guaranteed.

The embodiment of the utility model provides a dual-polarization dielectric dipole antenna, the antenna comprises a cross-shaped radiation unit and a guide sheet, the cross-shaped radiation unit comprises a first dielectric plate and a second dielectric plate which are in cross-shaped vertical cross connection; the feed balun circuit on the second dielectric plate crosses the side edge of the top of the first dielectric plate and is connected with the radiation arm on the same side surface of the second dielectric plate; a through hole is formed in the position, at the crossed connection position of the first dielectric plate and the second dielectric plate, of the second dielectric plate and is flatly attached to the first dielectric plate, so that the feed balun circuit on the first dielectric plate is connected to the radiation arm on the same face of the first dielectric plate through the through hole along the penetrating plane. According to the embodiment of the invention, the number of holes in the cross-shaped radiation unit is reduced, so that the antenna is simple to manufacture, and the production cost and the intermodulation distortion risk are reduced. In order to further reduce radiation unit holes, the two groups of feed balun circuits can be wound and crossed from the top, or one group of radiation arms are optimized into slot coupling feed, and coupling perforation is canceled.

To provide a nonwoven fabric for liquid impregnation, a nonwoven fabric for a wiper that is high in dirt collection ability.SOLUTION: A nonwoven fabric for an objective wiper is a fabric layer (a) which includes a first fabric layer, a second fabric layer, and an intermediate fabric layer situated between the first fabric layer and the second fabric layer, one of the first fabric layer and second fabric layer is a fiber layer a which has 50 mass percent or more of a hydrophilic cellulose fiber, and the intermediate fabric layer is a wet type nonwoven fabric including 50 mass percent or more of the hydrophilic cellulose fiber, and / or of a short fiber having a fiber length of 20 mm or less. Each fabric layer is integrated by cross connection of the fibers, where a MD 5% elongation stress index for which 5% elongation stress (N / 5 cm) in a MD direction under a dry condition is divided by basis weight (g / m2) of the nonwoven fabric is 0.150 or higher, and / or 5% elongation stress (N / 5 cm) in the MD direction under a humid condition divided by the basis weight (g / m2), namely MD 5% elongation stress index is 0.050 or higher.SELECTED DRAWING: None

The present invention provides a modular “fabric-unit” with preferred embodiments for the construction of a multitude of different self-supporting game boards of different types, sizes and shapes, wherein the fabric-unit comprises an array of 3-dimensional square “fabric-cells” for game tiles or 3D game pieces and game board accessories, mounting slots in the form of cross-connectors for attaching game board accessories and a background graphic layer, a plurality of hermaphroditic edge connectors on all sides of the fabric-unit, whereby the hermaphroditic edge connectors make a strong connection with hermaphroditic edge connectors of an adjacent inverted fabric-unit of the same construction, and the fabric-unit comprising small profile crossbars and walls and preferably high optical transparency material to increase visibility of a background graphic layer, and matching edge-panels for providing a cosmetic perimeter to the game board and for attaching a background graphic layer.

An embodiment of a manifold of a hydraulic fracturing system includes a flow cross junction including an inlet flow bore. In addition, the manifold includes a coupling adapter including an external shoulder and a connection device. The connection device is to connect to an output of a pump of the hydraulic fracturing system, and the coupling adapter is removably inserted within the inlet flow bore such that the connection device is positioned outside of the inlet flow bore. Further, the manifold includes a retainer ring connected to the flow cross junction and compressed against the external shoulder.

The invention relates to the technical field of photovoltaic supports, in particular to a universal photovoltaic support system for roofs, which comprises a spliced guide rail, a guide rail to be mounted, a connected guide rail, a cross assembly, a splicing assembly, a code pressing assembly, a supporting assembly, a mounting assembly, a connecting assembly, a clamping assembly and a fixing assembly. The splicing assembly is used for fixedly splicing the spliced guide rail and the to-be-mounted guide rail to form a spliced lengthened guide rail; the cross assembly is used for cross-connecting the to-be-mounted guide rail and the connected guide rail to form a cross fixed guide rail; pressing code placing cavities with different heights for placing photovoltaic modules are formed between the pressing code assembly and the guide rail to be installed; one end of the installation assembly is provided with an installation opening which is adjustable in size and used for installing a to-be-installed guide rail. The other end of the mounting assembly is fixedly connected with one end of the supporting assembly, one end of the clamping assembly and one end of the fixing assembly through the connecting assembly, and the other ends of the supporting assembly, the clamping assembly and the fixing assembly are mounted on different types of external roofs.

An adjustable roof support system is disclosed for supporting a roof or a floor in a building having at least one truss. The system includes a plurality of interlocking segments, each having at least one fastener slot and a cross-section comprising a main rail with a top extension and a bottom extension that define an interior channel and an external periphery. The interlocking segments include at least one female length and one male length, wherein the exterior periphery of the male length fits within the interior channel of the female length. The assembled length is slidably adjustable, and the system can be assembled on a structure having a first truss and a second truss. The system may also include a cross connector configured to secure one interlocking length to another at an angle.

The utility model relates to the technical field of greening grass planting, in particular to an anti-aging flat insertion type lap joint grass planting lattice structure, which comprises a grass planting lattice main body and is characterized in that the grass planting lattice main body is formed by cross connection and combination of a plurality of grass planting lattice single bodies, each grass planting lattice single body comprises a lattice frame, a base is arranged inside the bottom of each lattice frame, and the base is connected with the grass planting lattice main body. The base is formed by arranging a plurality of reinforcing ribs in a staggered mode, water leakage holes are formed in the junctions of the centers of the reinforcing ribs, and the lattice frame is of a regular hexagon structure. The anti-aging high-density polyethylene connector is simple in structure, is made of modified high-molecular-weight HDPE materials, has excellent anti-aging performance, enables the installation process to be simple and rapid due to the unique flat insertion type lap joint design, greatly saves installation time and labor cost due to the fact that the insertion blocks and the clamping frames can be detached and replaced independently, and improves installation efficiency. The design of flat insertion type lap joint allows the expansion joints to be adjusted according to actual conditions in the installation process so as to adapt to different ground conditions, the lawn and the parking lot are integrated, and the application range is wide.

The present application provides a frequency selective surface unit having large-angle stability. The frequency selective surface unit comprises a dielectric layer, a first metal layer, and a second metal layer. The dielectric layer is provided with an installation portion, and the installation portion is used to achieve cross-connection of two frequency selective surface units. The first metal layer is disposed on a side of the dielectric layer. The second metal layer is disposed on the side of the dielectric layer facing away from the first metal layer, and a capacitive structure or component is provided on the second metal layer. In the present application, an electric response can be generated on the first metal layer, and a magnetic response can be generated on the second metal layer, so that electromagnetic control can be performed on a frequency selective surface device provided with the frequency selective surface units arranged in a cross configuration. In this way, the frequency selective surface device having a three-dimensional structure can achieve high selectivity by having high wave transmittance in a high-frequency first operating frequency band and having high reflection in a low-frequency second operating frequency band. The device also have low loss, and achieves dual-polarization large-angle stability.

The invention relates to the technical field of photovoltaic supports, and discloses an adjustable flexible photovoltaic support for a large-gradient mountainous region. The wind power generation device comprises two steel cable supports and two bearing cables erected on the two steel cable supports, each steel cable support comprises a frame-shaped support, a V-shaped wind plate is movably arranged on each frame-shaped support, a transverse frame is movably arranged at the top of each frame-shaped support, a first steel cable frame and a rotatable second steel cable frame are arranged on each transverse frame, and the first steel cable frames and the second steel cable frames are arranged on the first steel cable frames. The second steel cable frame is provided with two lifting ropes which are in cross connection with the V-shaped wind plate, so that when the photovoltaic panel on the bearing cable inclines towards one side under the influence of wind power, the V-shaped wind plate is also influenced by the wind power, and the second steel cable frame is driven by the corresponding lifting ropes to carry out counter-pulling adjustment on the bearing cable. According to the invention, counter pulling of the bearing cable can be realized by means of wind power in strong wind weather, so that stability adjustment of the flexible photovoltaic support in strong wind weather is realized.

The invention discloses an EV charging station medium-voltage DC power distribution architecture and a control method, and relates to the technical field of power electronics. The system comprises a medium-voltage direct-current bus and a coordination controller, the medium-voltage direct-current bus is in electrical cross connection with a modular multi-level multi-port direct-current converter, and a half-bridge sub-module of the modular multi-level multi-port direct-current converter is in electrical cross connection with a plurality of three-active-bridge converters. The modularized multi-level multi-port direct-current converter and the three-active-bridge converter carry out bidirectional power transmission. In the EV charging station powered by the medium-voltage direct-current bus, power conversion from medium-voltage direct current to multiple low-voltage direct currents is achieved, compared with a traditional low-voltage alternating-current or low-voltage direct-current power distribution architecture, the power conversion links can be reduced, the power density and the operation efficiency of the EV charging station power distribution system are improved, and the system reliability is improved. And power balance among the sub-modules can be realized under any power consumption condition, so that the flexibility and reliability of power distribution are improved.

The invention provides a frequency selective surface unit with large-angle stability, the frequency selective surface unit comprises a dielectric layer, a first metal layer and a second metal layer, the dielectric layer is provided with a mounting part, and the mounting part is used for enabling two frequency selective surface units to be connected in a cross manner; the first metal layer is arranged on one side of the dielectric layer; the second metal layer is arranged on the side, away from the first metal layer, of the dielectric layer, and a capacitive structure or device is arranged on the second metal layer. According to the frequency selective surface device, the first metal layer can generate the electric response, and the second metal layer can generate the magnetic response, so that electromagnetic regulation and control can be performed on the frequency selective surface device with the crossed frequency selective surface units; the frequency selective surface device with the three-dimensional structure can have high selectivity of high wave transmission in the first working frequency band with relatively high frequency and high reflection in the second working frequency band with relatively low frequency, loss is low, and dual-polarization wide-angle stability is achieved at the same time.

A climbing exercise device integrates a dynamic load transfer system, optional rebound mechanism, and optional flywheel or magnetic brake to deliver fluid, full-body workouts while reducing knee strain. Opposing foot carriages, each guided along an upright support, are linked by flexible webbing wrapped around a rotatable transfer shaft. As one foot carriage descends and unwinds its webbing, the other carriage is lifted, shifting the load ratio to ease knee stress at deeper flexion. A rebound mechanism keeps the webbing under tension and increases that tension at stroke limits, promoting quick, smooth directional changes. An optional flywheel or magnetic brake further refines motion by adding adjustable resistance and inertia without impeding rapid reversals. Arm handles may be coupled—directly or cross-linked—to the foot carriages for upper-body engagement, resulting in a balanced, efficient climb. Multiple embodiments and frame configurations accommodate various height preferences, storage options, and user needs while retaining the synergy of these key systems.

The invention relates to a spoke type cable-supported grid roof and a reverse tensioning construction method thereof, belongs to the technical field of building construction, and solves the problems that a large number of temporary construction supporting jig frames need to be arranged in a bracket construction method in the prior art, the cost is high, the jig frames can be supported on a lower concrete structure, the interpenetration operation with the concrete structure needs to be considered, and the construction efficiency is high. And the construction process is tedious. The spoke type cable-supported grid roof comprises an upper steel structure, an outermost side pressing ring beam, radial cables and annular cables, the radial cables and the annular cables are connected in a crossed mode to form a cable net system, and the cable net system is connected with the upper steel structure and the outermost side pressing ring beam; in the construction process, the radial cables and the annular cables are reversely tensioned through the vertical construction inhaul cables, and the node elevation of the radial cables and the annular cables is lowered to the designed elevation through the self weight of the upper steel structure. In the construction process, a temporary construction supporting jig frame does not need to be arranged, the construction steps are simple, the construction efficiency is high, and the construction cost is reduced.

The invention relates to the technical field of optical cross connection device calibration, and discloses an FAU array self-calibration collimation and low-crosstalk coupling system for an OCS. According to the system, optical axis deviation, light spot parameters and inter-unit crosstalk data of each unit are acquired in real time through a distributed optical sensing array. And the light path state mapping module constructs a dynamic topological mapping graph according to the data, and globally represents the array coupling state. The self-adaptive calibration module calculates calibration requirements and generates an original instruction, and the crosstalk suppression coordination module analyzes the estimated influence of instruction adjustment on crosstalk of adjacent units, restrains the instruction which may deteriorate the crosstalk, and generates an optimized calibration instruction. And the collaborative execution module drives the micro actuator to complete submicron-level pose adjustment according to the final instruction. According to the system, active collaborative optimization of alignment precision and crosstalk suppression in the calibration process is realized, and the overall performance and stability of the system are improved.

The invention relates to a high-speed multi-pole non-salient pole synchronous motor cross-pole connection structure, which is characterized in that a rotor coil (2) and a rotor outgoing line (3) are arranged on a rotating shaft (1), a lead groove (14) and a lead screw through hole (13) with threads are processed on the rotating shaft, and the rotor outgoing line (4) is connected from the rotor coil (2) and the opposite rotor coil (3); and the lead screw is connected with an insulated rear lead screw (7) mounted in the lead screw through hole (13) through the lead groove (14). According to the invention, the symmetry and structural strength of the motor are effectively improved, the motor can be normally applied under the condition of extremely high rotating speed, vibration caused by asymmetry of a motor cross-pole connecting structure under the condition of high rotating speed can be effectively solved, and the service life of the motor is prolonged. Problems, such as poor contact and complex assembly, existing in a traditional connection mode can be effectively solved, and the performance and reliability of the motor are improved.

A solar module and a method of manufacturing the same. The solar module has a plurality of solar cell arrays, a cross-connector and an encapsulation. Each of the solar cell arrays includes solar cell substrates with contact structures and an interconnection structure that includes a plurality of round or rounded wires. Some of the wires have a flatter cross-section in a flattened region than the same wires in a non-flattened region adjacent to the flattened region and / or than other wires. The flattened region is located at and / or near an edge of a terminal solar cell substrate adjacent to a portion of the contacting surface of a rear side of the solar cell substrate. At least two strings of solar cell arrays are arranged side by side and interconnected by means of the cross-connector.

The utility model relates to a double-layer reticulated shell steel structure hyperbolic cooling tower, which is characterized in that a tower body is a hyperbolic paraboloid formed by rotating around a central shaft by taking an inclined straight line as a bus, the tower body comprises double-layer inclined struts, double-layer ring beams and reinforcing ring trusses, and the tower body forms an X-shaped unit of a corresponding layer through cross connection between the double-layer inclined struts from bottom to top; the axes of the double-layer inclined supporting columns coincide with the generatrix of the tower body, each X-shaped unit is provided with a double-layer ring beam, the double-layer inclined supporting columns and the double-layer ring beams are connected through separated connecting joints and are lattice type steel pipe components, and reinforcing ring trusses are arranged at the positions, at different heights, of the tower body respectively. The reinforcing ring trusses are fixedly connected with the double-layer ring beam on the layer; a widening platform is arranged between two adjacent X-shaped units at the bottommost part of the tower body, the widening platform is a three-chord reinforced truss, the widening platform is respectively and fixedly connected with the X-shaped unit at the bottommost part and the X-shaped unit at the upper layer, and an enclosure structure is arranged on a triangular grid formed by the double-layer inclined support columns and the double-layer ring beams.

The utility model discloses a foldable protective fence for elevator maintenance. The foldable protective fence aims at solving the problems of a traditional protective fence for elevator maintenance in the prior art in the aspects of volume control, stability and protection comprehensiveness. The protective fence comprises a left vertical rod and a right vertical rod, and notches are formed in the peripheries of the vertical rods and used for being connected with a telescopic connecting rod mechanism. The connecting rod mechanism is composed of a plurality of metal rod pieces which are connected in a crossed mode to form a stable rhombus or polygon-like structure, the connecting rod mechanism is connected with the vertical rods through the notches, and the foldable and telescopic functions of the protective fence are achieved. A fixing ring is arranged in the middle of the vertical rod and used for limiting the maximum opening and closing width of the connecting rod mechanism, and stability is enhanced. The trundle mounting rods are vertically arranged in the middles of the connecting rod mechanisms, and universal wheels are mounted on the trundle mounting rods, so that the protective fence is convenient to move and fix. A telescopic cross rod is rotatably arranged above the vertical rod on one side, a convex column is arranged above the vertical rod on the other side, and a hook at the tail end of the cross rod can hook the convex column, so that the protective fence is further fixed. The foldable bottom feet are arranged at the lower ends of the vertical rods, and stable supporting is provided for the protective fence. The elevator maintenance platform has the advantages of being small in size, high in stability, comprehensive in protection, convenient and fast to move and the like, is suitable for various elevator maintenance scenes, and effectively improves safety and efficiency of maintenance operation.

The invention provides a projection testing device, which comprises a testing screen plate with a plurality of sliding grooves, a plurality of sliding blocks, a plurality of first sliding blocks and a plurality of second sliding blocks, and a plurality of first sliding blocks and a plurality of second sliding blocks which are slidably embedded in the sliding grooves in a one-to-one correspondence manner, the plurality of sensors are arranged on the plurality of sliding blocks in a one-to-one correspondence manner, the plurality of sensors comprise a plurality of first sensors and a plurality of second sensors, the first sensors are arranged on the first sliding blocks, and the second sensors are arranged on the second sliding blocks; the first connecting rod and the second connecting rod are in cross connection through a rotating shaft, and the rotating shaft is aligned with the center of the test screen board and is relatively fixed with the center of the test screen board; wherein the first sliding block is driven by one of the first connecting rod and the second connecting rod to move in the tangential direction relative to the rotating shaft, and the second sliding block is driven by two of the first connecting rod and the second connecting rod to move in the radial direction relative to the rotating shaft.

The utility model discloses a pile foundation reinforcement cage binding structure, which belongs to the field of pile foundation reinforcement cage frameworks, and is characterized in that a plurality of lateral supporting ribs which are in 90-degree cross connection are fixedly bound in a cylindrical reinforcement cage structure; a supporting structure can be formed after the reinforcement cage structure is placed in the pile foundation pit, the frame amount between the pile foundation pit and the reinforcement cage structure is supplemented, the situation that the reinforcement cage structure inclines due to impact on the reinforcement cage structure during concrete pouring is reduced, and the structural strength of the pile foundation after integral condensation forming is improved.

The utility model provides a variable pitch transfer device which comprises a base frame and a variable pitch mechanism, and the variable pitch mechanism comprises a first limiting baffle, a second limiting baffle, a cross telescopic frame, a first linear driver, a second linear driver, a discharging pushing assembly, at least three movable material receiving seats and material blocking assemblies in one-to-one correspondence with the movable material receiving seats. The telescopic direction of the crossed telescopic frame is arranged in the front-back direction, the crossed telescopic frame is provided with crossed connecting positions which correspond to the movable material receiving bases one to one and are sequentially distributed in the telescopic direction, and the movable material receiving bases are connected to the corresponding crossed connecting positions in a one-to-one correspondence mode. The movable material receiving base located on the foremost side is connected to the driving end of a first linear driver, and the movable material receiving base located on the rearmost side is connected to the driving end of a second linear driver. And when the movable material receiving seats move to the folding positions, the discharging pushing assembly drives the material blocking assemblies on all the movable material receiving seats to release the materials received by the corresponding movable material receiving seats.

The invention discloses optical cross connection equipment and a use method thereof, and relates to the technical field of network equipment. The optical cross connection equipment comprises a connection equipment body, a fixing block, a driving mechanism, an anti-falling mechanism and a shielding mechanism, wherein the connection equipment body is provided with a plurality of input interfaces; the fixing block is arranged at the side part of the connecting equipment body, and a first connecting block and a second connecting block are arranged in the fixing block; the driving mechanism is used for driving the first connecting block to move in the first direction and the second connecting block to move in the second direction. The anti-falling mechanism comprises M moving blocks, each moving block is provided with N moving cavities and N elastic pulling mechanisms, sliding blocks are installed in the moving cavities, and anti-falling plates are fixed to the sliding blocks; the elastic pulling mechanism is connected with the sliding block; the shielding mechanism comprises N shielding plates and is used for shielding or opening the input interface. According to the invention, a plurality of or single connecting lines can be limited or unlimited, avoidance can be carried out during connection, and the input interface can be shielded when connection is not carried out, so that impurities are prevented from entering.

The embodiment of the invention provides an optical modulator, a wavelength selection switch, a port-level optical switch, an optical cross connection and an optical communication system, and aims to reduce insertion loss in an optical switching process. In the optical modulator provided by the invention, an included angle is formed between a first surface of a first substrate and a second surface of a second substrate, and a liquid crystal layer is located between the first substrate and the second substrate, so that an included angle is formed between an incident light beam of a signal light beam irradiating the optical modulator and an emergent light beam emitted from the optical modulator; the first substrate is provided with a first electrode layer, the second substrate is provided with a second electrode layer, the refractive index of the liquid crystal layer is changed by adjusting the first electrode layer and the second electrode layer to generate electric fields with different intensities, the included angle between the incident light beam and the emergent light beam is further adjusted, and the signal light beam is emitted to a target output port; deflection of the signal light beams is achieved through the refraction principle, the insertion loss of the signal light beams in the optical modulator is reduced, and then the insertion loss in the optical switching process is reduced.

The utility model discloses a tenon-and-mortise structure all-aluminum parking apron which comprises a stand column, a tenon-and-mortise groove is formed in the top of the stand column, an I-shaped keel is arranged in an inner cavity of the tenon-and-mortise groove, a connecting piece is fixedly connected to the upper end of the stand column, an arc-shaped aluminum alloy plate is fixedly connected to one end of the I-shaped keel, and a plurality of aluminum alloy decks are arranged on the surface of the I-shaped keel. The lower end of the stand column is provided with a flange adjusting seat. According to the all-aluminum parking apron with the mortise and tenon joint structure, the all-aluminum parking apron is safer and firmer through cross connection in a mortise and tenon joint structure mode, water accumulation of the parking apron is effectively prevented, the parking apron can be kept clean and tidy, the service life of the all-aluminum parking apron can be prolonged, the overall dead weight is light, and the bearing capacity is good; and secondly, uniform arrangement is achieved in a multi-position thickened stand column supporting mode, the parking apron is stressed in a dispersed mode, the bearing capacity of the stand columns is improved through reinforcing base plates, and the overall safety coefficient is improved.

The utility model relates to the technical field of roof anti-falling, and provides an anti-falling system for roof construction, which comprises an anti-falling mechanism and a rope mechanism, the anti-falling mechanism comprises locking pliers and a telescopic fixing frame, and the telescopic fixing frame comprises a first mounting column, a second mounting column and a shear fork type assembly. The first mounting column and the second mounting column are both provided with locking pliers, the shear fork type assembly comprises multiple sets of shear forks connected with one another, each set of shear fork comprises a first shear fork arm and a second shear fork arm which are connected in a crossed mode, the first shear fork arm of the shear fork located at the head end is hinged to the first mounting column in a sliding mode, and the second shear fork arm of the shear fork located at the head end is hinged to the first mounting column; the first shear fork arm of the shear fork located at the tail end is hinged to the second mounting column, and the second shear fork arm is slidably hinged to the second mounting column; the rope mechanism is mounted on at least one of the first mounting column and the second mounting column. Therefore, the safety coefficient and the working efficiency of roof operation can be remarkably improved, the risk of high-altitude falling accidents is effectively reduced, and reliable guarantee is provided for high-altitude operation.

This utility model provides a combined piston head lifting device, belonging to the field of processing technology. It includes a lifting ring with two iron chains on its surface. A first lifting arm and a second lifting arm are respectively mounted at the other end of each chain. A mandrel is positioned between the first and second lifting arms. A base support is fixedly installed at the other end of each of the first and second lifting arms. A piston head body is positioned between the first and second lifting arms. The lifting ring and iron chains are welded together, and the iron chains are welded to both the first and second lifting arms. The first and second lifting arms are cross-connected, and the mandrel is located at the intersection point. This utility model utilizes the gravity generated by the piston head body during lifting. Its own weight causes the hinge formed by the first and second lifting arms and the mandrel to clamp tightly, further ensuring that the base support is firmly engaged in the annular groove on the surface of the piston head body under the clamping force, thus improving the stability and safety of the piston head body during lifting.

The utility model provides a leg structure and a humanoid robot, which relates to the field of robots and comprises a sole part, a shank part and an ankle part connecting the sole part and the shank part. The ankle part comprises an ankle support and a cross shaft. The ankle support is provided with a first mounting table and a second mounting table in a protruding mode, a first bearing mounting hole is formed in the first mounting table, and a second bearing mounting hole is formed in the second mounting table. The cross shaft comprises a rolling shaft and a pitching shaft which are connected in a cross mode, and the rolling shaft can freely rotate relative to the pitching shaft. The two ends of the rolling shaft are rotationally installed in the first bearing installation hole and the second bearing installation hole through a first bearing and a second bearing respectively. A first connecting lug and a second connecting lug which are oppositely arranged are arranged at one end, facing the sole part, of the shank part, a third bearing mounting hole is formed in the first connecting lug, and a fourth bearing mounting hole is formed in the second connecting lug; the two ends of the pitch shaft are rotationally installed in the third bearing installation hole and the fourth bearing installation hole through a third bearing and a fourth bearing respectively.