86results about How to "Stable force" patented technology

The invention relates to the field of municipal engineering construction, in particular to gas pipeline construction equipment for municipal engineering. Comprising a conveying mechanism, a supporting and fixing mechanism and a groove cutting mechanism, the supporting and fixing mechanism and the groove cutting mechanism are sequentially arranged in the conveying direction of the conveying mechanism, the groove cutting mechanism comprises a fixed ring, a rotating ring and cutters, the rotating ring is coaxially and rotatably arranged on the fixed ring, and the cutters are evenly distributed on the rotating ring in the circumferential direction of the rotating ring. Each cutter can move in the radial direction of the cutter, the extrusion ring can move in the axis direction of the extrusion ring, a plurality of supporting pieces capable of moving in the radial direction are evenly distributed on the inner side of the extrusion ring in the circumferential direction of the extrusion ring, and an inner supporting driver is arranged on the extrusion ring. The rubber layer on the extrusion ring is elastically attached to the end face of the gas pipeline removal end, a uniform limiting contact face is formed, the stability of axial limiting is improved, the gas pipeline is internally supported through cooperation with the multiple supporting rollers, and the stability of radial limiting is improved.

The utility model discloses a kind of two-stage planetary reduction module suitable for frameless motor, belong to robot movement field, to solve the problem of poor integration when existing frameless motor adapts reduction module, insufficient reduction capacity.The module includes motor, two-stage planetary reduction mechanism, motor shell, shell end cover and output flange;Motor contains coaxially arranged stator winding and motor rotor, and motor rotor is ladder shaft structure;Two-stage planetary reduction mechanism is composed of primary reduction unit and secondary reduction unit, primary sun gear is connected with motor rotor by first sun shaft, secondary sun gear is connected with primary planetary gear by first planet carrier, and output flange is connected with second planet shaft, and first gear ring is arranged on the inner wall of motor shell.The utility model does not need transition component, and integration is high, two-stage reduction can realize high transmission ratio, and transmission precision is high, support is stable, effectively improve equipment load capacity and operating reliability.

The application relates to the technical field of household appliances, in particular to a refrigerator comprising a cabinet, a cabinet inner container, a refrigeration pipeline, a fixing assembly, the cabinet inner container is provided with a mounting port, the fixing assembly comprises a fixing piece used for fixing the refrigeration pipeline and a screwing piece connected to the fixing piece, and the screwing piece is configured to rotate relative to the mounting port so as to fix the refrigeration pipeline to the cabinet inner container. The fixing assembly used for mounting the refrigeration pipeline is convenient to install and reliable in connection.

The application discloses a PDC drill bit suitable for continuous and rapid drilling of a limestone stratum and application thereof. The drill bit comprises a drill bit body, the drill bit body is provided with a blade wing, and the blade wing is provided with cutting teeth arranged in double lines. The double lines comprise a main line and a secondary line, the main line and the secondary line are located on the same crown line, the main line is located on an infeed contact surface of the blade wing, and the secondary line is located behind the main line. The cutting teeth comprise plane teeth and flow-passing special-shaped cutting teeth, the main line is provided with main line plane teeth, and the secondary line is provided with flow-passing special-shaped cutting teeth. The flow-passing special-shaped cutting teeth are provided with a through tooth flow passage, and the blade wing is provided with a blade wing flow passage corresponding to the tooth flow passage. The application adopts the same crown line double line tooth arrangement, greatly reduces the impact force on the cutting teeth, and avoids early damage of the cutting teeth. The application is provided with the tooth flow passage and the blade wing flow passage, improves the cooling effect of the cutting teeth, avoids thermal damage of the cutting teeth, prolongs the service life of the cutting teeth, and ensures that the drill bit has continuous aggressiveness.

This invention provides a satellite lifting auxiliary mechanism and method, relating to the field of satellite ground assembly technology. The invention includes an inclined support assembly and a ring support assembly. First, the satellite is placed within the ring space of a ring-shaped component. Then, the lower end of the inclined support rod is connected to the lifting point at the bottom of the satellite, and the upper end of the inclined support rod is connected to the ring component, forming a radial support structure. This support structure is connected to external lifting equipment via lifting lugs, allowing for stable lifting of the satellite. The evenly distributed circumferentially arranged inclined support rods and lifting lugs ensure balanced force on the satellite during lifting, solving the problem that conventional lifting methods cannot be used at the lower lifting point of the satellite. This invention features a simple and stable structure, adaptable to various satellite configurations. Simultaneously, the evenly distributed circumferential support structure ensures a stable lifting process, avoids uneven force distribution on the satellite, and allows for reuse, improving ground assembly efficiency.

This utility model relates to a telescopic adjustable rearview mirror, comprising a telescopic tube and an outer tube nested together, with a telescopic positioning assembly between the telescopic tube and the outer tube. The telescopic positioning assembly includes: a movable bubble point elastically connected to the telescopic tube, with the telescopic path of the movable bubble point always radial; and positioning grooves formed on the outer tube, with at least two sets arranged axially. The movable bubble point is embedded in one set of positioning grooves to achieve limiting. This application achieves the purpose of moving the telescopic rod up and down by pressing the movable bubble point, reducing the probability of scratches, deformation, and damage from adjacent vehicles, and is suitable for riders of various body types.

This invention relates to the technical field of deep foundation pit construction, and in particular to a support pile support device and construction method. The device includes several connecting bolts, several expansion bolts, four pins, a fixing device, a soil layer, a support pile, and two tensile anchor cables. Both tensile anchor cables are fixedly connected to the interior of the soil layer. The fixing device includes an anchor bolt connector, two steel struts (first type) and two steel struts (second type). One end of each of the two steel struts (first type) and one end of each of the two steel struts (second type) are detachably connected to the outer surface of the anchor bolt connector. This invention features a detachable fixing device that connects the tensile anchor cables and the support pile, ensuring the stability of the support pile and replacing the function of a horizontal wainscoting. Furthermore, after use, this device can be disassembled and reused, saving money, reducing the expenditure on forging multiple horizontal wainscotings, avoiding waste of shaped steel materials, and eliminating the single-use limitation of horizontal wainscotings.

The utility model relates to the technical field of planar motors, and provides a planar motor with a supporting structure, which comprises a mover, a stator and a supporting structure, the mover and the stator are arranged at intervals along the vertical direction, a permanent magnet is arranged in the mover, a plurality of electromagnetic coils are arranged in the stator, and the supporting structure is arranged on the mover. The electromagnetic coil and the permanent magnet act to enable the mover to be supported above the stator in a suspended mode, a first installation groove is formed in the side face, facing the stator, of the mover, or a second installation groove is formed in the side face, facing the mover, of the stator, and one side of the supporting structure is arranged in the first installation groove or the second installation groove. And the other side of the supporting structure is movably connected with the stator or the rotor, so that the rotor can horizontally move relative to the stator. By arranging the supporting structure, magnetic suspension supporting and rigid supporting of the supporting structure exist between the rotor and the stator at the same time, the load capacity of the rotor can be improved, the moving resistance of the rotor can be reduced, and the motion precision of the planar motor can be guaranteed.

The utility model discloses a kind of super capacitor assembly convenient assembly tools of car, it includes first limiting component and second limiting component, the first limiting component includes a first body and a first positioning pin from the first body;The second limiting component includes a second body and a second positioning pin from the second body;The second body is equipped with sliding guide groove extending along its length direction, the cross-sectional shape of the sliding guide groove corresponds with the cross-sectional shape of the first body, the first body is slidably contained in the sliding guide groove, the distance between the first positioning pin and the second positioning pin is adjusted by sliding the first body.The utility model has the advantages of simple structure, convenient operation, strong versatility and can realize fast and accurate positioning.

The utility model relates to a telescopic micro-pressure oxygen-enriched cabin, including front cabin body and rear cabin body, wherein the rear cabin body is telescopic soft shell body, is equipped with telescopic support subassembly for supporting cabin bottom in the rear cabin body, and the bottom of telescopic support subassembly is equipped with walking wheel, is equipped with folding deck chair in oxygen storehouse, and the folding deck chair includes fixed part, rotating part and walking part, the fixed part is fixedly connected with the bottom of front cabin body, the rotating part sets up in the rear end of fixed part, and the front end of rotating part is connected with the bottom of front cabin body through first rotary part, and the walking part sets up in the rear end of rotating part, and the rear end of walking part is connected with the rear end of telescopic support through second rotary part, and the rear end of rotating part and the front end of walking part are hinged through third rotary part, the utility model discloses the design of soft and hard cabin body combination can reduce the floor space of cabin body simultaneously, and the folding deck chair is integrated with telescopic soft cabin body, so that the folding deck chair can be telescopic with the soft cabin body simultaneously, and is suitable for small space scene such as family.

The invention relates to the technical field of seismic isolation grooves, in particular to a seismic isolation groove cover plate. The integrated cover plate body is adopted, stress is stable, and the anti-seismic capacity is high; the height adjusting support can adjust the height position of the cover plate body so that the upper ends and the lower ends of the first inclined face and the second inclined face can be aligned and the slope faces can be attached when the cover plate body is placed on the supporting plane in different site states, a unified plate can be adopted, arrangement is convenient, and site adaptability is high. The mounting end of the cover plate body is in limited connection through a connecting mechanism, the mounting end of the cover plate body can rotate upwards or downwards relative to the connecting position of the cover plate body and the seismic isolation side wall after limited connection, and when the width of the seismic isolation groove changes, the mounting end of the cover plate body rotates upwards or downwards relative to the connecting position of the seismic isolation side wall. And meanwhile, the second inclined surface at the free end of the cover plate main body can slide along the first inclined surface of the slope structure so as to adapt to the width change of the seismic isolation groove.

This utility model belongs to the field of hinge technology, specifically disclosing an American-style hinge, including a fixed base, a movable base, a hinge arm, and a torsion spring. One end of the hinge arm is connected to the fixed base, and the other end of the hinge arm is hinged to the movable base via a hinge shaft. Positioning posts are provided on both side walls of the movable base. The torsion spring is sleeved on the positioning posts, with its first leg pressing on the hinge arm and its second leg secured to the movable base. By providing positioning posts on both side walls of the movable base, the torsion spring can be positioned and initially stabilized by first sleeved on the positioning posts during installation, facilitating installation. Furthermore, the large space on both sides of the movable base allows for easy operation, facilitating the pressing of the first leg of the torsion spring onto the hinge arm and the securing of the second leg to the movable base, improving production efficiency. During subsequent use of the hinge, the torsion spring maintains stable force, resulting in smoother hinge operation.

This invention discloses a fully automatic linear control busbar bonding structure and method. The structure includes: a bonding pressure roller, a take-up roll, and a release roll mounted on a substrate; multiple reversing rollers on the substrate for adjusting the direction of the material roll / strip; a release roll for holding the material roll / strip; one end of the material roll / strip connecting to the take-up roll after passing through the multiple reversing rollers and the bonding pressure roller; the bonding pressure roller for pressing the material roll / strip closer to the electronic board; and a control module connected to a tension adjustment mechanism, a take-up motor, and a release motor, capable of adjusting the speeds of the take-up motor and the release motor. This fully automatic linear control busbar bonding structure utilizes the independent rotation of the take-up roll and the release roll to uniformly wind the material roll / strip onto the take-up roll. During the conveying process, the angle and position of the material roll / strip are adjusted by the multiple reversing rollers, facilitating the bonding pressure roller to bond the material roll / strip to the electronic board, ensuring high efficiency and high quality in busbar installation on the electronic board.

This utility model belongs to the field of photovoltaic support technology, specifically disclosing a photovoltaic support, including several support columns, several piles, and a mounting frame for installing photovoltaic panels. The top end of the support column is fixedly connected to the mounting frame, and the bottom end of the support column is fixedly connected to the pile through a clamp unit. The clamp unit includes a top plate fixed to the bottom end face of the support column, multiple strip-shaped flat irons, and at least two clamps. The top plate is placed on the top end face of the pile. The multiple strip-shaped flat irons are distributed around the side wall of the pile, and the top ends of the multiple strip-shaped flat irons are fixedly connected to the edge of the top plate. At least two clamps fix the multiple strip-shaped flat irons to the side wall of the pile. In the radial direction of the pile, the strip-shaped flat irons are located between the pile and the clamps, thereby increasing the force and frictional resistance between the clamps and the pile, making it less prone to loosening, and further ensuring that the top plate is tightly attached to the top end face of the pile.

The utility model discloses a kind of point type connection glass curtain wall connection claw structure, it includes the support structure connecting piece being arranged in the right side of glass panel, the left side of the support structure connecting piece is fixedly connected with four symmetrical claw arms, the right side of the claw arm is provided with connection head, the connection head is fixedly connected with glass panel, the surface of the claw arm is provided with screw rod, the connection head is fixedly connected with screw rod, the right side of the claw arm is fixedly connected with limit ring, the limit ring is penetrated to the surface of screw rod, the surface of the screw rod is provided with limit ring two, the limit ring is engaged with limit ring two, the surface of the screw rod is connected with threaded sleeve by screwing.The utility model is rotated by rotating rotating part, connecting ring will drive threaded sleeve to rotate on the surface of screw rod, limit ring and limit ring two contact limit, limit ring two slide on the surface of slider, at this time, adjust screw rod needs appropriate height, finally, screw rod is locked, height adjustment is completed.

This invention provides a dual-station rubber pad forming hydraulic press, comprising a main unit, left and right feeding stations, a hydraulic system, a pressurizing system, and an oil cooler. The main unit adopts a multi-layered stacked frame structure and a trough-shaped housing frame, resulting in more uniform and stable force distribution compared to existing equipment. This simplifies the rubber pad replacement process and eliminates the tedious disassembly and assembly of the housing frame. The power system employs a two-stage pressure system consisting of a main hydraulic cylinder and a rapid hydraulic cylinder connected in parallel, capable of meeting the requirements of high-pressure forming and low-pressure rapid movement. The mobile conveying structure composed of the middle forming station and the left and right feeding stations enables continuous forming operations and significantly improves production efficiency.

This invention discloses a prefabricated structure and construction method for large-area irregularly shaped ceiling aluminum panels, including a base frame, irregularly shaped aluminum panels, and hook-and-loop components. The irregularly shaped aluminum panels are fixed to the base frame via the hook-and-loop components. All components—the base frame, the irregularly shaped aluminum panels, and the hook-and-loop components—are made of aluminum. The beneficial effects of this invention are: Prefabricated installation allows for pre-correction of the shape and unified leveling, resulting in a more regular overall shape and higher fidelity to irregular curved surfaces; prefabricated installation is suitable for large areas, complex irregular shapes, large spans, and high-clearance locations, offering greater adaptability to complex shapes; prefabricated installation provides stable stress, convenient testing, reliable overall hoisting and positioning, and superior node accuracy and structural stability; prefabricated installation significantly reduces high-altitude work time; labor input is reduced by 60%, and temporary work costs are reduced by 40%; improved accuracy solves the problem of connecting irregularly shaped ceiling designs; and increased efficiency: the on-site construction cycle is shortened by more than 60%, eliminating the need for on-site cutting and welding, and reducing conflicts arising from overlapping operations.

This utility model relates to a road pile support structure adjacent to multiple high-voltage power towers. It includes a first retaining wall installed on one side of the road adjacent to the multiple high-voltage power towers and located at the road edge line between the tops of the road cutting slopes at both ends. Second retaining walls are respectively installed within the first retaining wall between two adjacent high-voltage power towers and on the side of the road cutting slope near both ends. Crown beams are installed at the top of both the first and second retaining walls. Tie beams are respectively installed between the second retaining wall between two adjacent high-voltage power towers and the first retaining walls located on both sides of the second retaining wall. Tie beams are also installed between the second retaining wall on the side of the road cutting slope near both ends and the first retaining wall. This utility model, by setting up the first and second retaining walls and coordinating with tie beams to form a combined support system, is easy to operate, highly safe, and economical, ensuring the safety of the power towers and surrounding areas.

The application relates to a printed matter cutting and separating device, and belongs to the technical field of packaging material processing equipment. The cutting and separating structure comprises a cutting assembly, a separating assembly, a winding assembly and a rack. The cutting assembly is arranged at one end of the rack. The cutting assembly comprises an auxiliary roller, a cutting roller, a cutting motor and a traction mechanism. The auxiliary roller is rotationally arranged at one end of the rack. The traction mechanism is arranged on the rack and located at one side of the auxiliary roller. The cutting roller is rotationally arranged on the rack and located between the auxiliary roller and the traction mechanism. A plurality of cutting knives are arranged on the cutting roller. The separating assembly is arranged at the other end of the rack. The winding assembly is arranged on the rack and located above the separating assembly. The working end of the cutting motor is arranged on the cutting roller. The cutting motor provides power for the rotation of the cutting roller. The application has the technical effects of shunting, guiding, preventing deviation and winding.

This utility model belongs to the field of offshore wind power and discloses a quick unhooking device for towing floating wind turbines. It includes a housing, a piston, and an oil tank. The housing and piston are respectively used to connect to corresponding cables. The housing has an inner cavity with an opening on one side. The piston slides and inserts into the inner cavity. Multiple first separation plates are spaced apart on the inner wall of the inner cavity opposite the piston. Multiple second separation plates are spaced apart on the outer wall of the piston facing the inner cavity. The first and second separation plates are staggered, forming a serpentine channel. The serpentine channel is connected to the oil tank via a liquid inlet pipe. A seawater interface is provided on one side of the liquid inlet pipe, and a water inlet valve is installed on the seawater interface. The dual buffering principle of this utility model not only effectively copes with high-frequency, low-amplitude vibrations but also stores energy through the oil compression effect when facing strong impacts, significantly reducing the impact peak value, minimizing damage to connecting parts, and improving system stability.

The utility model discloses a concrete strength detection device and relates to the technical field of concrete detection. The concrete strength detection device comprises a rebound apparatus body, a striking rod is slidably connected in the rebound apparatus body, an additional column is fixedly connected to the rebound apparatus body, a turnover door is arranged at one end, away from the rebound apparatus body, of the additional column, an adjusting block is slidably connected in the additional column, handles are fixedly connected to the two sides of the adjusting block, and the handles are fixedly connected to the two sides of the adjusting block. An adjusting assembly is arranged in the additional column and used for adjusting the position of the adjusting block. The structure that the additional column is additionally arranged at the tail end of the rebound apparatus body is adopted, the rebound apparatus is lengthened so that sampling detection can be conducted on a narrow wall face, meanwhile, the handle is arranged on the side face of the additional column so that a user can stably apply force, detected data can be more accurate, the position of the handle can be conveniently adjusted through the adjusting assembly, and use is convenient. And adaptation to narrow wall surfaces with different depths is facilitated.

This utility model discloses an easily adjustable pressing device for a sander, relating to the field of sander technology. The easily adjustable pressing device for a sander includes a base plate, with a conveying mechanism and a pressing mechanism disposed above the base plate. The conveying mechanism includes a conveying section and a limiting section. The conveying section includes two conveying rollers and a conical block, and the limiting section includes two sets of limiting frames and two sets of limiting rollers. The technical advantage is that the conveying mechanism provides stable sliding guidance for the limiting frames through the cooperation of the conical block, wedge groove, and wedge block. Combined with the elastic force of the compression spring and damper, the limiting rollers can automatically adjust their spacing according to changes in workpiece width and always closely fit the side of the workpiece, achieving adaptive adjustment without manual operation. This significantly improves adaptability to workpieces of different widths and reduces changeover adjustment time. Simultaneously, the heating plate inside the conical block can complete preheating treatment during workpiece conveying.

This utility model discloses a hydraulic precast component turning frame, applied in the field of building construction technology. It includes a base A, with a slot on the right side of the base A. A movable plate is slidably fitted inside the slot, and a base B is bolted to the right side of the movable plate. Limiting holes are provided on the right side of the front and rear ends of the movable plate. This utility model, through its overall elongated mechanical design, flexibly adapts to precast components of different heights, significantly improving the equipment's versatility. Its telescopic structure eliminates the need for component replacement, simplifying the operation process while ensuring stable force distribution. It can adapt to diverse engineering needs and ensure the stability and safety of the component turning process, effectively improving construction efficiency and reducing operational risks. The clamping design on both sides of the precast component can accurately lock the component's position, ensuring uniform and stable force distribution during the turning process. The symmetrical clamping on both sides effectively avoids the risk of component displacement or slippage, reducing the potential deformation hazards caused by uneven force distribution on one side.

The application discloses a servo cut-off valve group, which comprises a first valve body and a second valve body integrated on a valve seat. Both the valve bodies are provided with valve cavities, and the valve cavities are internally provided with valve spools driven by a servo motor through a screw rod. The valve bodies are provided with outer ring channels communicated with inlet and outlet of the valve seat on the side surfaces, the outer ring channels are communicated with the valve cavities through a plurality of uniformly distributed lateral flow channels, and the inner walls of the valve cavities are further provided with inner ring channels. The longitudinal flow channels at the bottoms of the two valve cavities are communicated with each other through channels in the valve seat. When the two valve spools synchronously rise above the lateral flow channels, fluid can sequentially pass through the flow channels, and the valve is opened; when the two valve spools synchronously descend to completely cover the lateral flow channels, the valve is closed. The two valve cavities are communicated at the bottoms to form a pressure balance cavity, so that the valve spools are hardly subjected to axial thrust when the valve is closed, and high pressure is converted into sealing force in the radial direction of the valve spools, thereby fundamentally solving the high pressure leakage problem of traditional cut-off valves, and the application is especially suitable for high pressure equipment such as filter presses.

The utility model relates to medical rehabilitation instrument technical field, and disclose a kind of tendon recovery device in rehabilitation department, including support, backrest, cushion, handle, counterweight rod one and counterweight disc one, the side fixed mounting of support away from backrest is equipped with support beam, the end fixed mounting of support beam away from support is equipped with sleeve column, the inside rotation of sleeve column is equipped with pivot, the end fixed setting of pivot close to support beam is equipped with adjusting assembly. The tendon recovery device in rehabilitation department, fixed hole and arc-shaped hole can be fixed by bolt and convex strip, the operation process does not need to help professional tool, only by pulling bolt drive spring operation can complete dismounting operation, facilitate later maintenance, simultaneously also alleviate the intensity of cleaning work, utilize the design of foot pedal cylinder and protruding block, foot pedal cylinder and arch are pasted, and protruding block can increase friction, beneficial to patient stable force, provide reliable support for tendon recovery training.

This utility model provides a socket wrench, belonging to the field of mechanical tool technology. It solves the problems of existing socket wrenches being prone to wobbling and having difficulty transmitting torque. This socket wrench includes: a socket, which comprises: a connector, an extension rod, and a connecting structure; the connector is adapted to connect to a part to be disassembled or assembled; the connector and the connecting structure are respectively disposed at both ends of the extension rod, and the three are integrally connected; a power transmission assembly, which is connected to the connecting structure and is adapted to connect to an external traction device. This utility model has the advantages of requiring no additional support and being highly flexible in operation.

The application discloses a medicine packaging and boxing device for production, and relates to the technical field of packaging and boxing devices, which comprises a machine body, a medicine conveying mechanism arranged on the machine body, a boxing station corresponding to a discharging end of the medicine conveying mechanism, a paper box roller conveying table located at a discharging side of the boxing station, and a receiving mechanism arranged in connection with the paper box roller conveying table, wherein a medicine box boxing and pressing mechanism and a box pushing mechanism are arranged at the boxing station; the medicine box boxing and pressing mechanism is arranged at the boxing station, and cooperation between a driving element, a positioning frame, a sliding pressing frame, an upper positioning plate and a bottom limiting sliding groove is utilized to form upper pressing and lower guiding and limiting of the paper box, so that the paper box can maintain a relatively stable position state during continuous medicine box entering, and deviation of the paper box caused by local stress change is reduced, thereby facilitating the medicine box to be loaded into the paper box in a predetermined posture.

Embodiments of the present disclosure provide a display module and a display device, and relate to the technical field of display, which are used to achieve the purpose of firm adhesion and uniform stress between the support and the adhesive layer. The display module comprises a display panel and a support, the support comprises a support plate and a plurality of strip-shaped holes arranged on the support plate, the length direction of each strip-shaped hole in the plurality of strip-shaped holes is a first direction, and the width direction of the strip-shaped hole is a second direction; the plurality of strip-shaped holes are arranged into multiple rows along the second direction; the strip-shaped holes of adjacent rows are staggered in the second direction; the distance between two strip-shaped holes in adjacent rows and adjacent in the first direction is a set hole distance E; the support is attached to the non-display side of the display panel through an adhesive layer; there is a single peak width H of the maximum peeling force between the support and the adhesive layer; and the value range of E is (H-3) mm to (H+3) mm. The display module is used for displaying images.

The application provides a simplified shield tail for a tunnel rescue shield machine and a use method thereof, and belongs to the field of collapsed body drilling rescue. The simplified shield tail comprises an annular shield tail body, a limiting part fixing base arranged on the outer wall of the annular shield tail body in a circumferential direction, and a limiting part arranged on the limiting part fixing base. The limiting part is arranged on the limiting part fixing base in a circumferential direction of the annular shield tail body, and one end of the limiting part extends to the inner side of the annular shield tail body through the tail end of the annular shield tail body to limit the segment in the annular shield tail body. A bottom rail is arranged on the bottom of the tunnel rescue shield machine and the annular shield tail body in the length direction of the tunnel rescue shield machine, and the annular shield tail body is fixedly connected with the bottom rail. The problems of the bulky structure design of the conventional shield tail of the shield machine and the certain obstruction to the smoothness of the tail of the shield machine are solved, and rescue is affected.