163 results about "Cavity wall" patented technology

The invention relates to a shaped SPCS cavity wall assembly type combined system and a construction method thereof. The shaped SPCS cavity wall assembly type combined system comprises an SPCS cavity wall, assembly type ring ribs, a height-adjustable base, a laminated plate, a supporting angle adjusting piece and an adjustable supporting rod. An SPCS cavity wall and a ground anchor are arranged on the laminated slab; fabricated ring ribs are arranged in the SPCS cavity wall, and supporting angle adjusting pieces are arranged on the upper side face and the lower side face of the SPCS cavity wall correspondingly. The group of adjustable supporting rods are respectively connected with the ground anchor piece and the supporting angle adjusting piece; the SPCS cavity wall and the laminated slab are connected through a height-adjustable base, and the side face is sealed through a sealing plate. And a group of lifting lugs are arranged at the upper end of the SPCS cavity wall. According to the method, BIM modeling is adopted to extract data, intelligent machine tool machining is adopted, an SPCS cavity wall assembly type combined system is formed, the construction procedures are greatly reduced, size control is accurate, the reinforcing mode is reliable, and the forming effect is good; the method not only has a good construction error-tolerant rate, but also guarantees the safety of construction workers, and improves the efficiency of building construction.

The invention discloses a building component and a building structure, and relates to the technical field of buildings. Wherein a cavity is limited in the framework, and a plurality of communicating holes capable of communicating with the cavity are formed in the cavity wall of the framework; and the concrete body covers the periphery of the framework and is filled in the cavity. The excellent compression resistance of the concrete body can be used for bearing the load of a pressure area, meanwhile, restraining force can be generated on the framework, local yielding of the framework is prevented, the fireproof and anti-corrosion effects can be achieved, the framework can bear tensile force to make up for the tensile weakness of the concrete body, shear force can be borne, ductility is improved, and the service life of the concrete body is prolonged. And the bearing capacity and the stability of the building component are improved. Besides, the mechanical occlusal force between the framework and the concrete body can be increased through the communicating holes, interface slippage and cracking are effectively avoided, and the cooperative work capacity and durability of building components under long-term loads are guaranteed.

A bucket (1) for a working machine (2) is disclosed. The bucket (1) may have: a front cavity wall (14) forming an inlet (18) defining a vertical inlet plane (26); a rear cavity wall (16) opposite to the front cavity wall (14) forming an outlet (20) defining an outlet plane (28); a top cavity wall (22) extending between the front cavity wall (14) and the rear cavity wall (16) defining a horizontal top plane (23); a bottom cavity wall (24) opposite to the top cavity wall (22) defining a bottom plane (25); and two side cavity walls (29, 30). The two side cavity walls (29, 30) may also extend between the front cavity wall (14) and the rear cavity wall (16). The outlet plane (28) may be at an angle relative to the inlet plane (26), the bottom plane (25) may be at an angle relative to the top plane (23), and the outlet plane (28) is perpendicular to the bottom plane (25).

The application discloses a heat exchanger, which comprises a plurality of heat exchange pipes, a first component, a second component and a first sealing element, wherein the heat exchange pipes are connected with the second component; the heat exchanger has a first collecting cavity which is located between the first component and the second component; the first component comprises a first protruding part and a first collecting cavity wall, the first protruding part protrudes from the outer wall of the first component and faces away from the first collecting cavity, and the first protruding part is connected with the second component; the first component further comprises at least one second protruding part, at least part of the second protruding part protrudes from the first protruding part and faces away from the first collecting cavity along the protruding direction of the first protruding part, and at least part of the second protruding part is in abutment with the second component; the second component has at least one positioning groove, and the second protruding part is located in the positioning groove, so that the position between the first component and the second component is positioned, the compression amount of the first sealing element is controlled within a preset range, and the sealing effect of the first sealing element is improved.

The application discloses a noise reduction ventilation cooling device and a tunnel system, and belongs to the field of tunnel ventilation and cooling devices.The tunnel system comprises the noise reduction ventilation cooling device, and the noise reduction ventilation cooling device comprises a ventilation noise reduction assembly and a cooling assembly.During ventilation, air passes through the sound-absorbing through holes of the sound-absorbing members, so that the noise generated in the ventilation process of the tunnel system is absorbed.During cooling, the sound-absorbing members on the cavity walls of the ventilation cavity can absorb the noise generated in the cooling process of the heat exchange medium of the heat exchange circuit, so that a low noise level is maintained.Further, the noise reduction ventilation cooling device integrates noise reduction, ventilation and cooling, and is equivalent to a combined device for noise reduction, ventilation and cooling.The sound-absorbing members are used to reduce noise in the ventilation process and the cooling process, so that the tunnel space occupied by the noise reduction ventilation cooling device is reduced, and the problem that the noise reduction device and the heat dissipation ventilation facility occupy a large tunnel space in the prior art is solved.

The invention provides an underground automatic ball throwing tool, a well drilling coring device and an underground automatic ball throwing method.The underground automatic ball throwing tool comprises a shell provided with an inner cavity and an underground control unit fixedly arranged on the cavity wall of the inner cavity, and the underground control unit is provided with a detection component, a control component and a driving component; the detection component is used for receiving a push-down signal or a recovery signal sent from the ground, and the control component is connected to the detection component and used for controlling the driving component to drive the ball releasing unit to execute ball releasing when the detection component detects the push-down signal or controlling the driving component to drive the ball releasing unit to recover when the detection component detects the recovery signal; the ball releasing unit is provided with a ball containing channel and a push-pull rod connected with the driving component. Based on the electric control technology, the ball throwing operation is carried out by receiving the push-down signal sent from the ground, and the automatic ball throwing device can be suitable for automatic and efficient ball throwing in the environments such as inclined shafts and horizontal wells.

The invention relates to the technical field of slurry scraping devices, and discloses a slurry scraping device for a pouring type semi-flexible pavement, the slurry scraping device comprises a slurry scraping plate connected with a moving frame, the slurry scraping plate comprises a plate body, a moving part and an inserting part, the plate body is provided with a cavity penetrating through the top surface of the plate body, the plate body is made of a material with elastic deformation capacity, and the plate body is fixedly connected with the moving frame; the moving part is connected to the moving frame and located above the plate body, the inserting parts are connected with the moving part, the number of the inserting parts is the same as that of the cavities, the inserting parts are driven by the moving part to move up and down and are movably inserted into the cavities, and the moving part drives the inserting parts to move to different positions of the cavities. The size of a gap formed between the cavity wall of the cavity and the end of the inserting part is changed, the moving part can drive the inserting part to be completely inserted into the cavity to fill the cavity, the rigidity of the slurry scraping plate is changed by changing the size of the gap between the cavity wall of the cavity and the end of the inserting part, and the size of the gap is linearly changed. Therefore, the rigidity of the slurry scraping plate can be linearly changed.

The present application relates to a kind of porous metal materials.The cavity wall of the hole surrounded by is connected open hole, and the cavity wall is axial hollow structure, and the cavity wall has hole in radial direction, and the porosity of the porous metal material is uniformly distributed or gradient distribution, and the gradient distribution can be gradient change along one direction, or it can be three-dimensional gradient change, and the cavity wall radial hole is single-stage hole.The porous metal material of the present application has good mechanical properties, high three-dimensional pore connectivity, and good transfer performance.

The application discloses an isolation device and a construction method of a filling well. The isolation device comprises an inflation assembly and an isolation piece. The inflation assembly comprises an inflation piece and structural reinforcement pieces. The inflation piece is provided with an inflation cavity, an inflation port and a deflation port. The deflation port is arranged at intervals from the inflation port. Both the inflation port and the deflation port are communicated with the inflation cavity. A plurality of structural reinforcement pieces are arranged at intervals along the axial direction of the inflation piece. Each structural reinforcement piece is connected with the cavity wall of the inflation cavity and is arranged along the circumferential direction of the inflation piece. The isolation piece is wrapped outside the inflation assembly. The side of the isolation piece away from the inflation assembly is used for contacting with a filling body. The isolation device can optimize the construction process of the filling well.

The utility model provides a communicating device and a coal washing production line with the same. The communicating device is used for communicating two adjacent coal washing devices and comprises a communicating structure and a buffering structure. The communicating structure is provided with a feeding port, a discharging port and a communicating cavity, the feeding port communicates with the discharging port through the communicating cavity, and at least part of the communicating structure is obliquely arranged so that materials entering the communicating cavity through the feeding port can move towards the discharging port under the action of gravity; wherein the communicating cavity is provided with a buffering section, and a containing concave part used for containing materials is arranged on the bottom wall of the buffering section; and the buffering structure is arranged on the cavity wall of the communicating cavity, and the buffering structure is used for buffering the materials by limiting and stopping the materials in the moving process. According to the chute, the problems that the service life of the chute in the prior art is short and the coal washing quality of coal is reduced are solved.

The utility model provides a protection door structure and a socket, and relates to the technical field of electrical equipment. The protection door structure comprises a shell, a first protection door, a second protection door and an elastic piece, and the protection door structure has a first direction. A mounting cavity is formed in the shell and provided with a cavity bottom, a first cavity wall and a second cavity wall, the first cavity wall and the second cavity wall are opposite in the first direction, a first inserting hole and a second inserting hole are formed in the cavity bottom, the first inserting hole is close to the first cavity wall, and the second inserting hole is close to the second cavity wall. The first protection door slides in the mounting cavity in the first direction. The second protection door slides in the mounting cavity in the first direction, the part, close to the first cavity wall, of the second protection door is nested with the first protection door, and the first protection door and the second protection door can relatively slide in the first direction. The elastic piece is arranged between the second protection door and the first protection door and can stretch out and draw back in the first direction. In this way, the overall size of the protection door structure can be reduced, and then the manufacturing cost of the protection door structure can be reduced.

The invention relates to the technical field of waterproof construction, in particular to a zero-carbon building roof deformation joint heat preservation structure which comprises a cover plate, a mounting rod is vertically and fixedly mounted on the lower surface of the cover plate, a plurality of air cavities are formed in the mounting rod, and a corrugated pipe is fixedly mounted on the surface of the mounting rod; the mounting rod is slidably sleeved with a plurality of sets of heat preservation components, each heat preservation component comprises two flexible heat preservation bodies slidably arranged on the mounting rod in a sleeving mode, and a mounting plate is fixedly mounted at one end of the corrugated pipe; the cavity wall of the air cavity is provided with an air vent, piston plates are vertically arranged in the air cavity in a sliding and sealing mode, the upper surface of the cover plate is provided with a penetrating opening corresponding to the sliding opening in position, a sliding rod is fixedly installed between the multiple piston plates, the sliding rod is inserted in the sliding opening in a sliding and sealing mode, and the top end of the sliding rod penetrates out of the penetrating opening. And the length of the flexible thermal insulation body can be quickly adjusted according to the size of the deformation joint to be subjected to thermal insulation treatment until the deformation joint is subjected to thermal insulation, so that the practicability is improved.

The utility model relates to the technical field of hydraulic fracturing under a mine, and discloses a deep hole fracturing separator which comprises a first separation pipe, a second separation pipe and a third separation pipe, and a containing cavity is formed in the inner side wall of one end of the first separation pipe; the clamping piece and the sliding ball are embedded in the containing cavity, and the sliding ball is movably connected into the containing cavity and is arranged opposite to the clamping piece; one end of the second separation pipe extends into one end of the first separation pipe and is opposite to the clamping piece and the sliding ball, the clamping piece can move between a first position and a second position, the first separation pipe and the second separation pipe are in interference fit with the clamping piece at the first position, and the first separation pipe and the second separation pipe are in interference fit with the clamping piece at the second position. The sliding ball selectively extrudes the clamping piece to move towards the cavity wall of the containing cavity, so that the clamping teeth are separated from the second separation pipe. In the normal working state, the clamping piece is in interference fit with the first separation pipe and the second separation pipe, and when a fault occurs in the deep hole, separation of the first separation pipe and the second separation pipe can be rapidly achieved.

The present application relates to the technical field of range hood, and discloses a switchable air inlet assembly and a range hood with the same, the switchable air inlet assembly comprises a panel, a wind collecting box, a damper plate assembly and a cleaning device, the damper plate assembly comprises a guide rail, a damper plate and a driving device, the damper plate is provided with a shielding surface and a wind guide opening, the damper plate has a first position for shielding the air inlet, a second position for the wind guide opening corresponding to the air inlet and a third position for the shielding surface facing the cleaning device on the guide rail, and the driving device drives the damper plate to move on the guide rail; compared with the prior art, the switchable air inlet assembly can close the air inlet by the damper plate when the range hood is turned off, so that the external dust can be reduced to enter the wind collecting box and the dirt can be reduced to generate on the inner cavity wall surface of the wind collecting box; when the damper plate moves to the third position, the cleaning device can clean the shielding surface, so that the appearance of the panel is clean and tidy when the damper plate moves to the first position and closes the air inlet from the user side.

The application relates to the field of concrete raw material quantitative batching, and discloses a sandstone quantitative batching device which comprises a batching tank, a connecting shaft is coaxially arranged in the batching tank, the connecting shaft is connected with a motor arranged on the outer surface of the batching tank, the outer circumferential surface of the connecting shaft is provided with a batching component, the batching component is arranged in an array along the circumferential direction of the connecting shaft, the batching component comprises a connecting frame connected with the connecting shaft, a measuring cylinder is arranged on the connecting frame, a material hole is arranged on the upper end surface of the batching tank, the measuring cylinder can be coaxial with the material hole during the rotation of the batching component along with the connecting shaft, the upper hole of the material hole is extended with a hopper, the opening ends of the measuring cylinders of all the batching components are connected through a ring plate, the ring plate is provided with avoiding holes for avoiding the measuring cylinders, and the upper end surface of the ring plate is attached to the upper cavity wall of the batching tank.

The utility model discloses an electronic tracking positioner protective sleeve which comprises an upper cover and a lower cover, the rear end of the upper cover is connected with the rear end of the lower cover through a rotating structure, the front end of the upper cover is connected with the front end of the lower cover through a locking structure, and a first cavity is formed in the inner side face of the upper cover. The inner side face of the lower cover is provided with a second cavity corresponding to the first cavity, a positioner containing cavity is formed between the first cavity and the second cavity, a waterproof structure is arranged between the cavity wall of the first cavity and the cavity wall of the second cavity, and the outer side face of the upper cover or the outer side face of the lower cover is provided with an installation fixing structure. The upper cover and the lower cover are connected through the rotating structure, the upper cover and the lower cover do not need to be disassembled when the positioner is installed, and use is more convenient; after the positioner is installed, the whole positioner can be fixedly installed on an article needing to be tracked and positioned in a pasting or magnetic attraction mode and is not easy to find, and when the article is lost, the article can be quickly found through the positioning function of the positioner.

The utility model relates to the technical field of lid, especially a general plastic bucket lid capable of preventing water absorption, which comprises an outer lid and an inner lid, the bottom surface of the outer lid is provided with a sealing cavity, the top surface of the sealing cavity is the inner bottom surface of the outer lid, the cavity wall of the sealing cavity is the inner side surface of the outer end, the lower part of the cavity wall of the sealing cavity is provided with an inner thread matched with the outer thread of the plastic cylinder, the inner bottom surface of the outer lid is provided with a top surface detection assembly, the upper part of the cavity wall of the sealing cavity is provided with a side surface detection assembly, and the top surface detection assembly and the side surface detection assembly are used for detecting whether water leaks or not; the inner lid is used for being connected with the plastic cylinder, the inner lid is arranged in the sealing cavity of the outer lid, the inner lid is flexibly attached to the bucket opening, and the deformation gap of the plastic bucket opening is compensated; the outer lid is provided with a screw pressing and tightening mechanism, axial sealing is formed, the water vapor invasion path is blocked, the top surface / side surface desiccant is arranged in a partitioned manner, residual water vapor is adsorbed, the humidity in the bucket is reduced, and the water vapor penetration condition can be judged through the discoloration of the top surface / side surface desiccant.

The cab mounting support is used for mounting a cab on a vehicle frame structure, the cab mounting support comprises a bevel covering plate structure, the bevel covering plate structure comprises a top covering plate and a side covering plate which are connected, the top covering plate is used for being tightly attached to a wing plate, the side covering plate is used for being tightly attached to a web plate, and the top covering plate and the wing plate are provided with top mounting holes; side wall mounting holes are formed in the side covering plates and the web plates; the support cavity structure comprises a cavity wall structure and an inner cavity, the cavity wall structure comprises a top cavity wall, and a cavity wall mounting hole used for being fixedly connected with a suspension mechanism of a cab is formed in the top cavity wall. According to the cab installation support provided by the embodiment of the invention, stable connection with the supporting beam in the intersecting direction can be provided through the bevel covering plate structure, a suspension mechanism of a cab can be arranged and connected in the vertical direction, a cross rod structure is not needed, floor space is not additionally occupied, the structure is simplified, and development is rapid; and meanwhile, an operation space is reserved in the inner cavity, so that an operator can conveniently install and operate.

The invention discloses an eccentric boring rod and cutter relieving device for machining a special-shaped cavity, relates to the technical field of boring rods, and aims to solve the technical problem that the machining efficiency is affected due to long manual debugging time of the eccentric boring rod. Comprising a first oil storage cavity used for storing hydraulic oil, a second oil storage cavity communicated with the first oil storage cavity and an eccentric wheel installed in a rotating mode, and the end of a first piston rod is fixedly connected with a flexible column used for adjusting the eccentric angle of a tool bit. The dynamic balance assembly comprises a balance cavity and a compensation cavity which protrudes outwards and is formed in the inner cavity wall of the balance cavity, the inner cavity wall of the balance cavity is fixedly connected with a separation bag used for separating the compensation cavity, and a balance weight part is arranged in the balance cavity. The device has the advantages that the eccentric angle of the tool bit can be automatically adjusted, the step of manual timing sequence debugging is omitted, the machining preparation period is greatly shortened, the dynamic balance assembly compensates unbalanced torque in real time, vibration is reduced, the machining precision is improved, and the requirement for batch and efficient machining of special-shaped cavities is met.

The utility model relates to the technical field of cavity wall structures, in particular to a cavity wall structure with a sound insulation function. The technical problems that in the prior art, due to the fact that a large number of fasteners matched with a wallboard need to be assisted in construction and installation of the damping sound insulation board, construction is complex, construction waste is much, and the construction period is long are solved. A cavity area is formed through cooperation of the interval limiting assemblies and the wallboards, the prefabricated position of the damping sound insulation board is guaranteed, no other fasteners needing to be punched are arranged on the wallboards, only after construction is completed, a decorative face wall is arranged on the wallboard on the outer side, the construction efficiency can be effectively improved, construction waste is reduced, and the construction cost is reduced. And the configuration is stable.

A cavity wall barrier for a building, suitable for placement spanning across a wall cavity of a timber framed structure to both prevent access for vermin and insects, and prevent spread of fire in the

The invention discloses a connector butt joint guiding device with a reset function, and the device comprises a mounting housing, two opposite ends of which are respectively an open end and a closed end; the conducting pipe is arranged in the mounting shell in a penetrating manner; the reset mechanism comprises a reset seat, an axial reset assembly and a radial reset assembly, the reset seat is arranged in the mounting shell, an axial retreat gap is formed between the reset seat and the closed end, the axial reset assembly is connected between the reset seat and the closed end, and the reset seat is arranged outside the conduction pipe through a movable cavity in a sleeving mode; a radial movable gap is formed between the conduction pipe and the cavity wall of the movable cavity, and the radial reset assembly is connected between the conduction pipe and the cavity wall of the movable cavity; the guide mechanism comprises a transmission part and a guide pipe, the transmission part is fixedly arranged outside the conduction pipe in a sleeving mode, the reset seat is matched with the transmission part in an abutting mode, and the guide pipe is arranged on the transmission part. According to the connector butt joint guiding device with the reset function, the problems that alignment is difficult, reset is inconvenient and the like when a quick connector is in butt joint in a narrow space are solved.

A cavity wall barrier for a building comprising a first layer of mesh material of a first lattice size, a second layer of mesh material of a second lattice superimposed on the first layer. The first lattice size is different to the second lattice size. The superimposed mesh layers form a shaped barrier having a floor and at least one side wall. The side wall has on one side, a layer of intumescent material attached thereto, and on the other side, means to secure the mesh wall to a wall of a building.

The application discloses a salt cavern cavity forming process control method for compressed air energy storage, and belongs to the technical field of compressed air energy storage.The application solves the problem that, due to dependence on artificial experience and fixed process parameters, the existing cavity forming control method is difficult to accurately control the three-dimensional form of the cavity when facing a non-homogeneous salt rock stratum, and the problem that local over-dissolution, damage to the sealing property of the cap layer of the cavity top and stress concentration of the cavity wall easily occur, affecting long-term stability.The application builds a salt cavity form dynamic inversion model based on real-time sensing of geological parameters, and combines bidirectional coupling simulation of fluid mechanics and rock mechanics to perform closed-loop adaptive optimization control on water injection displacement, dissolving agent cushion thickness and pipe lifting speed, realizes intelligent transformation of the salt cavern cavity forming process from experience driving to data model driving, improves the cavity forming precision, and significantly enhances the construction economy and operation safety of the gas storage.

The utility model relates to the technical field of drainage construction, and discloses a drainage groove bottom plate, a drainage groove and a drainage structure.The drainage groove comprises a drainage groove body, a drainage groove bottom plate and a drainage groove bottom plate, the bottom plate is located below the drainage tank body and connected with the drainage tank body in a buckled mode, the bottom plate comprises a cover body part and lap joint parts, the cover body part covers the opening in the lower portion of the drainage cavity, the lap joint parts stretch outwards in the transverse direction from the two transverse ends of the cover body part respectively, and the lap joint parts are used for being in lap joint with a drainage plate. The drainage groove body comprises a cavity wall part and two first buckling parts, a drainage cavity is defined by the cavity wall part, the two first buckling parts correspondingly extend outwards in the transverse direction from the two bottom ends, opposite in the transverse direction, of the cavity wall part, and second buckling parts matched with the first buckling parts in a buckled mode are arranged at the inner end, in the transverse direction, of the lap joint part. The drainage groove bottom plate, the drainage groove and the drainage structure are provided with the lap joint parts capable of being in lap joint with the drainage plate, and the waterproof effect can be improved.

The utility model relates to the technical field of cavity wall connecting structures, in particular to a cavity wall connecting node structure, which solves the technical problem that the strength of modular cavity walls in the prior art is weak after the modular cavity walls are combined, and comprises a plurality of cavity modules which can be arranged in rows or columns to form a cavity wall surface; when the cavity modules are arranged in rows, the adjacent extending ends abut against each other to form a pouring area, and the corresponding first semicircular openings form a first prefabricated pipe cavity area. When the cavity modules are arranged in rows, the adjacent second semicircular openings form a second prefabricated pipe cavity area; ribs can be prefabricated in the second prefabricated pipe cavity area; connecting pieces can be prefabricated in the first prefabricated pipe cavity area, and the prefabricated connecting pieces are used for connecting the pre-laying layer and the inner wall plate. According to the technical scheme, the prefabricated ribs and the prefabricated connecting pieces which are staggered transversely and longitudinally are provided in the arrangement in rows and columns, and the prefabricated connecting pieces can be connected with the pre-laid layer and the inner wall plate, so that a stable supporting system similar to a rib cage is integrally formed, and the structural strength is greatly improved.

This invention relates to a tool for gas well drainage and gas production. This insert-type self-lifting mixed-flow drainage and gas production tool includes a cavity with a chamber. One end of the cavity is connected to a discharge pipe, which is connected to the discharge pipe via a diffuser. The inlet end of the diffuser is a narrow-diameter inlet located within the cavity, and the outlet end is an wide-diameter outlet connected to the discharge pipe. A throat with the smallest diameter is provided between the narrow-diameter inlet and the wide-diameter outlet. The other end of the cavity is connected to a gas pipe. A nozzle with a diameter smaller than the gas pipe is installed at the outlet of the gas pipe, communicating with the gas pipe. The nozzle is located within the cavity and points towards the inlet of the diffuser. A flow channel connecting the cavity to the outside is provided on the cavity wall. The key to this drainage and gas production method lies in controlling the gas-liquid mixing ratio in the discharge pipe. This drainage tool can be widely adapted to gas wells with different parameters, can be deployed in gas wells for extended periods, and can automatically discharge the liquid generated in the gas well. When necessary, it should be combined with appropriate tubing pressurization technology.

The floor drain comprises a main body with a cavity channel and a cover plate, a cavity channel opening in the bottom end of the main body inclines towards one side, the cover plate used for blocking is hinged to the cavity channel opening, and a magnetic attraction mechanism is arranged between the cover plate and the cavity channel cavity wall. The design that the hinged end formed in the mounting groove in the peripheral wall of the main body is hinged to the cover plate does not enlarge the horizontal size of the main body, mounting of the floor drain is facilitated, the design that the placement groove is in butt joint with the magnetic blocks facilitates mounting of the magnetic attraction mechanism, the magnetic attraction mechanism is arranged at the hinged position, the spacing distance between the two magnetic blocks is small in the opening and closing process of the cover plate, and mounting is more convenient. The cover plate is easier to reset under the action of magnetic attraction, and the stability is improved.

The embodiment of the utility model relates to an automatic door lifting device for an isolator, which comprises a door frame piece arranged on the cavity wall of the isolator and surrounding the side wall of a door opening of the isolator; the driving assembly is arranged on the side edge, away from the door opening, of the door frame piece and connected with the door frame piece; and the door plate piece is arranged on the side, away from the cavity wall, of the driving assembly, and the door plate piece is in sliding connection with the door frame piece through the driving assembly. According to the automatic lifting door device for the isolator, smooth sliding of the driving assembly can be improved, so that the influence of deformation of the cavity wall on the driving assembly is reduced, repair is avoided, labor is saved, and the operation cost is reduced.

A wall anchor provides thermal isolation between an inner wythe and an outer wythe of a cavity wall. The wall anchor includes a structural body. A support block is about a support plate of the structural body and a connection bar block is about a connection bar of the structural body.