37results about How to "Improve connection stiffness" patented technology

The invention discloses a hanging basket system for symmetrical pouring of cantilevers of a variable-cross-section stacked box aqueduct in the technical field of stacked box aqueduct pouring. The hanging basket system comprises a stacked box girder body, an upper truss is arranged on the edge of the upper end of the stacked box girder body in the pouring direction, the upper truss is provided with a suspension arm extending downwards, and a pouring hanging bracket assembly is arranged at the lower end of the suspension arm; the pouring supporting effect of the bottom of the lower box is achieved through stable anchoring of the bottom formwork, the supporting frame which is relatively fixed and matched with the lower box is arranged in the lower box, the supporting cantilever extends in the pouring direction through the supporting frame, and the supporting cantilever is used for bearing the bracket, so that the pouring supporting structure of the whole upper box is formed; the suspension arm is simultaneously connected in series with the bottom template and the support cantilever, so that the integrity is ensured; the whole structure can guarantee the pouring process of the variable cross-section stacked box aqueduct, has good supporting strength and connecting rigidity, and can effectively achieve the pouring process from stacked boxes to short stacked boxes and then to single boxes.

The invention relates to a high-precision force measuring mechanism for a flexible lever heavy hammer support, and the mechanism comprises a first installation seat, a first fixed plate, a second installation seat, a second fixed plate, a positioning structure, and a sensor tool. The rectangular end surfaces of the first mounting seat and the second mounting seat in the height direction are oppositely mounted at intervals, and are connected and fixed through the first fixing plate and the second fixing plate; the positioning structure is used for realizing coarse positioning and fine positioning of the to-be-tested flexible lever heavy punch supporting assembly; the sensor tool is installed on the rectangular end face of the first installation base and used for positioning the force measuring zero point of the flexible lever heavy punch supporting assembly and measuring the supporting force, the working direction of the flexible lever heavy punch supporting assembly is accurately determined through multiple positioning modes, and the force measuring precision is improved.

The utility model discloses an automobile seat cross beam assembly, and relates to the technical field of automobile seat cross beams. The automobile seat cross beam assembly comprises a cross beam body and a welding nut mounting table which is fixedly arranged on the top face of the cross beam body and used for fixing an automobile seat and the cross beam body, and the outer wall of the cross beam body is fixedly connected with a welding edge and a turned-over edge. According to the device, the first reinforcing toothed plate and the second reinforcing toothed plate are arranged on the upper side and the lower side of the cross beam main body, and the directions of sawteeth of the first reinforcing toothed plate and the second reinforcing toothed plate are perpendicular, so that the connecting rigidity among an automobile seat, a cross beam assembly and an automobile can be increased from multiple directions; and the structures such as the damping layer, the honeycomb core, the reinforcing ribs and the positioning blocks are overlapped, so that the supporting strength of the cross beam assembly can be optimized, the production cost of the cross beam assembly is saved, the service life of the cross beam assembly is prolonged, and the cross beam assembly can stably support the automobile seat.

This utility model discloses a high-rigidity, lightweight double wishbone front lower control arm, specifically relating to the field of automotive suspension system technology. It includes a control arm body with multiple hollowed-out grooves on its surface. Two bushing assemblies are located on one side of the control arm body, and a ball joint assembly is fixedly mounted on the other side. A reinforcing mechanism is provided on the surface of the control arm body, including a fixed cavity fixedly located inside the control arm body at the connection points between the control arm body and the bushing and ball joint assemblies. Reinforcing ribs are fixedly mounted inside the fixed cavity. An annular reinforcing ring is fixedly mounted at the connection points between the control arm body and the bushing and ball joint assemblies, and several reinforcing ribs are evenly distributed on the surface of the annular reinforcing ring. This utility model achieves the core functions of lightweight load-bearing, precise guidance, and long-term protection through the synergistic effect of its components.

The application provides a bearing seat, an electric spindle assembly and a numerical control machine tool. The bearing seat comprises an outer seat body, an inner seat body, a damping structure and a cooling channel. The outer seat body forms an outer chamber, and the inner seat body is arranged in the outer chamber. A damping cavity is formed between the inner seat body and the outer seat body, and the damping structure is arranged in the damping cavity. The cooling channel is formed in the outer seat body, the inner seat body or the damping structure. The cooling effect and the damping effect are considered, the damping structure improves the support damping between the inner seat body and the outer seat body, and the vibration between the inner seat body and the outer seat body can be absorbed. The cooling liquid is introduced into the cooling channel, the heat generated by the high-speed rotation of the bearing can be taken away, the thermal deformation of the bearing and the bearing seat is prevented, the rotation accuracy of the electric spindle and the stability of the electric spindle operation are improved. The damping structure is formed by injecting a hot-melt glue type material into the damping cavity and solidifying, and the pressure of the damping cavity is not adjustable. The damping structure is formed by injecting metal powder, silicon oil or hydraulic oil into the damping cavity, and the pressure of the damping cavity is adjustable.

The utility model discloses an air door of a mine return air duct, which belongs to the technical field of non-pressure air doors, solves the problems that the existing air door of the mine return air duct is short in service life and difficult to disassemble and assemble, and comprises a crank arm door leaf and a connecting door leaf which are connected through a locking bolt. Inclined pull reinforcing ribs and transverse lining ribs are arranged on the leeward sides of the crank arm door leaf and the connecting door leaf, a reinforcing rib plate is arranged at the joint of the crank arm door leaf and the outside, a connecting sleeve is arranged on the reinforcing rib plate, and connecting positioning cylinders are arranged on the windward sides of the crank arm door leaf and the connecting door leaf and are connected through Z-shaped pins. The utility model has the characteristics of strong bearing capacity, long service life and easiness in disassembly and assembly, and can adapt to complex working conditions of the mine return air duct.

The utility model provides a glass guide rail installation structure, a vehicle door and a vehicle. The glass guide rail installation structure comprises a lower support located in the vehicle door. The lower support is located at the bottom end of the glass guide rail, is in an n shape and is provided with an installation platform located in the middle and installation supporting legs arranged on the two opposite sides of the installation platform respectively. The lower support is fixedly connected into the vehicle door through the installation supporting legs on the two sides, and the bottom end of the glass guide rail is fixed to the installation platform. According to the glass guide rail installation structure, the lower support is arranged to be in the shape of the Chinese character'ji ', the supporting legs on the two sides are connected with the automobile door, the rigidity of the lower support of the glass guide rail and the connecting rigidity between the lower support and the automobile door metal plate can be improved, and the abnormal sound problem that automobile door glass shakes due to insufficient rigidity of installation points of the glass guide rail is avoided. And a good use effect is achieved.

The utility model discloses a prefabricated slab anti -cracking connecting structure relates to the technical field of assembly building, and this prefabricated slab anti -cracking connecting structure includes: contact board, is symmetrically arranged in the butt joint end surface of prefabricated slab and is fixedly connected in prefabricated slab, and the contact board is the wave -shaped tenon and mortise structure, and the concave -convex surface of wave -shaped tenon and mortise structure mutually engages, alloy ring, is set in the circumferential outside of contact board, prestressed anchor rod, the prestressed anchor rod is worn in prefabricated slab, bifurcated anchor bar, bifurcated anchor bar includes the main stem and bifurcated anchor head, and bifurcated anchor head sets up in one end of main stem and is connected in angle with main stem, and the end of bifurcated anchor head embeds adjacent prefabricated slab. The utility model through the wave -shaped mortise and tenon structure of contact board realizes the multiaxial constraint of adjacent prefabricated slab when being stressed, disperses the stress at the gap, reduces the cracking risk, and simultaneously realizes stress even transmission through bifurcated anchor bar and prestressed anchor rod, improves the seismic resistance and durability of link structure, realizes the effect of anti -cracking and easy construction.

The present application relates to the offshore photovoltaic technical field, specifically is a kind of offshore photovoltaic steel structure installation pile foundation formula adjustable safety operation platform.Pile foundation main body outer wall one side is fixed with multiple groups of positioning hoop piece along its height, and multiple groups of support frame are arranged in the opening of platform main body bottom and the other side of pile foundation main body outer wall, and the end of each group of support frame is towards pile foundation main body and is fixed with the connecting hoop piece matched with positioning hoop piece, and the positioning hoop piece is provided with diameter adjusting pad between the opposite connecting hoop piece.The positioning hoop piece is arranged on the outer side of pile foundation main body, and the connecting hoop piece and diameter adjusting pad structure that can be adapted to the butt joint of platform main body end portion are matched, can be adapted to the hoop clamping size according to the pile foundation outer diameter specification, is adapted to the photovoltaic pile foundation of multiple specifications, simultaneously, relying on the split locking installation structure of multiple groups of support frame cooperation hoop, the overall quick disassembly of platform can be realized, and the on-site construction process is simplified.

The utility model relates to the field of automobile manufacturing, and discloses a torsion shaft suspension structure with the adjustable height. Comprising a circular shaft tube, an adjusting bolt fixing support, an adjusting bolt fixing block, an adjusting bolt, an adjusting nut, an adjusting arm, a steering knuckle, a spline shaft seat, an adjusting bolt cushion block, a first adjusting arm check block, a second adjusting arm check block, an inner sleeve, a spline shaft, a rubber sleeve, a bayonet, a groove, a right notch groove, a circular hole, a connecting circular groove, a connecting hole and a limiting hole. The circular shaft tube is fixedly connected with the adjusting bolt fixing support in a welded mode, the inner sleeve is fixedly connected with the steering knuckle in a welded mode, the rubber sleeve is connected with the interior of the circular shaft tube in a clamped mode, and the first adjusting arm check block and the second adjusting arm check block are fixed to a bayonet. The adjusting arm, the first adjusting arm check block and the second adjusting arm check block are fixedly connected to the outer side wall of the circular shaft pipe, and the adjusting bolt fixing block is fixedly connected with the groove.

A large-diameter tension-compression decoupling fusion type linear separation device is composed of a separation ring, an inner support protective cover, a detonator seat, an energy-gathering cutting cable assembly, a connecting fastener and a detonator, the protective cover is internally provided with the energy-gathering cutting cable, after the detonation energy is transmitted to the main charge of the cutting cable through the transmission assembly of the detonator, the shaped charge is driven by the detonation wave to form a metal jet to cut and separate the separation ring, the high-level load transmitted by the projectile body is tension-compression decoupled through the tolerance control of the separation ring and the inner support protective cover, and a large-diameter tension-compression decoupling fusion type linear separation device is given, which has the advantages of simple structure, reliable separation performance, high bearing capacity, large connection stiffness, light weight, convenient installation and the like.

The application discloses a rope connection unlocking mechanism for surrounding locking irregular shape objects, which is characterized in that the rope connection unlocking mechanism comprises a fuse assembly (1), a pull rope (2), an adjusting assembly (3), a locking force indicating assembly (4) and a main body collecting assembly (5), the fuse assembly (1) is connected with the locking force indicating assembly (4) through the pull rope (2), the locking force indicating assembly (4) is connected with the adjusting assembly (3) through the pull rope (2), the adjusting assembly (3) is connected with the fuse assembly (1) through the pull rope (2), the fuse assembly (1) realizes locking and power-on unlocking, the adjusting assembly (3) realizes tensioning of the pull rope (2), and the locking force indicating assembly (4) judges the size of the pre-tightening force and provides a basis for the tightening position of the adjusting assembly (3). The application has the advantages of good space adaptability, effective weight reduction, effective impact reduction and good connection rigidity.

This invention discloses a single-lock curtain wall with a non-intrusive clamp hoisting component and its construction method, belonging to the field of building curtain wall technology. It solves the technical problems of traditional post-installed embedded components damaging the main structure, difficult rebar installation, low installation accuracy, and poor adaptability. The single-lock curtain wall includes a post-installed clamp assembly, a beam structure, a reinforced load-bearing component, a hoisting cable assembly, and a curtain wall assembly. The post-installed clamp assembly consists of a load-bearing plate, a tie plate, a reinforcing plate, and a hoisting plate. It forms a ring-shaped non-intrusive structure by bonding and welding with architectural AB adhesive. Combined with the differentiated reinforcement structure of the beam structure, it achieves uniform load transfer. The construction method includes on-site material customization, non-intrusive installation of the clamp assembly, precise curtain wall suspension, and intelligent monitoring with a total station. The monitoring system captures millimeter-level displacement through a prism, forming a closed-loop control of measurement-feedback-adjustment.

The utility model relates to generator set protection equipment technical field, concretely relates to a construction generator set shell with fire prevention function, including base, top cover and side wall coaming, the side wall coaming is fixed on the base, and the top cover is buckled and is connected with the top of side wall coaming, the side wall coaming adopts double -deck composite structure, including the metal protection board and fire -retardant lining that set gradually from outside to inside, the metal protection board surface is coated with high -temperature -resistant anticorrosive coating, and the back of fire -retardant lining is connected through buckle and metal protection board up and down sliding insertion, the metal protection board inboard is equipped with the flow guide rib that abuts with the back of fire -retardant lining, be equipped with the guide slot that is matched with the buckle shape on the flow guide rib, and form the ventilation interlayer between adjacent flow guide rib, the top cover is composed of the extension plate of triangle and the cover plate of top inclination, be equipped with the radiating window on the extension plate, the radiating window inside integrates multilayer fire -retardant metal net.

The invention relates to the technical field of modular avionics cases, and discloses a modular electronic rack for a complex airborne environment, a module bearing area and a printed board backboard bearing area are of embedded structures, and the joints of side plates on the two sides of the module bearing area and transverse cold plates adopt mutually matched mortise and tenon joint structures. A plurality of modules can be installed and jointly inserted on the printed board backboard in a blind mode to achieve interconnection, and the electronic rack has the capacity of adapting to strong vibration, high temperature, high humidity and heat and salt mist of a carrier and being high in shielding performance due to the fact that the electronic rack is made of sealing pieces and corrosion-resistant materials.

The present invention discloses a semi-grouting sleeve for preventing steel bar dislocation and wall contact, comprising a sleeve body for connecting steel bars at both axial ends, and an elastic stretching member arranged in the sleeve body and capable of axially extending and contracting along the sleeve body, the elastic stretching member being fixedly connected to a sliding component capable of axially sliding along the inner wall of the sleeve body, the sliding component being fixedly connected to the steel bars outside the sleeve body and enabling the steel bars to axially slide into the sleeve body under the pulling action of the elastic stretching member, and a grouting hole and a grouting outlet being arranged on the sleeve body; the semi-grouting sleeve can not only solve the problem of steel bar dislocation and wall contact at both ends of the grouting sleeve, but also provide a certain axial pulling force for the grouting sleeve, thereby improving the connection stability and rigidity.

The present invention proposes a separation and retraction type compression release device, which can realize separation and retraction while unlocking the unlocking device. It includes: a bracket, an end cover, a support, a bottom plate, a spring A, a spring B, an adapter plate A, an adapter plate B, a screw cap, an anti-drop cap, an unlocker A and an unlocker B; the upper support leg of the bracket passes through the through hole of the support and contacts the support, and the bottom of the support leg of the bracket is connected to the end surface of the bottom plate; one side of the end cover is connected to the adapter plate A, and the other side is connected to the support, and the end cover and the support constitute the main structure; the unlocker A, unlocker B, bracket and spring B are installed inside the main structure; the bottom plate is used to connect the bracket and the adapter plate B; the bottom plate is connected to the four support legs of the bracket; the unlocker A and unlocker B are installed on the inner side of the end cover and the inner side of the bracket respectively, and are used for unlocking and separating the separation and retraction type compression release device.

The application discloses a large space facility agile self-generating construction platform and a construction method, relates to the field of space on-orbit service, and solves the problems that traditional construction robots cannot meet flexible and various task requirements and that the connecting stiffness of a truss structure is low and it is inconvenient to disassemble and maintain after connection is completed. The application comprises a round pipe forming device, a truss forming device and a satellite platform, the round pipe forming device and the truss forming device are arranged on the satellite platform, and two assembly mechanical arms are arranged on the satellite platform; the round pipe forming device, the truss forming device and the assembly mechanical arms construct robots according to task requirements, the robots are used for constructing large space facilities, and the truss structures are connected through butt joint structures. The construction platform provided by the application can generate robots based on tasks, can construct various types of space robots on an orbit based on continuous forming equipment, and can realize on-orbit construction of large space structures through multi-arm cooperation and multi-robot cooperation.

The application discloses a CFRP-ECC-based underground continuous wall construction method and a formwork structure, and belongs to the technical field of underground engineering construction. The method adopts a CFRP-ECC formwork structure, obtains the rock stratum and the lateral pressure of concrete pouring, and takes the greater value as the most unfavorable load, and according to the most unfavorable load, the maximum bending moment and the bending bearing capacity of the stress section of the formwork structure are calculated, and the size parameters of the formwork structure are determined by taking the bearing capacity being not less than the maximum bending moment as a constraint; the CFRP grid is laid into a mold and fixed connectors, ECC material is poured, and the formwork structure is obtained after curing and demolding; the formwork structure is hoisted and placed into a groove section as an outer side permanent formwork, a reinforcement cage is hoisted and placed and fixed through the connectors and the CFRP grid, and finally, concrete is poured and cured to complete the construction. The CFRP-ECC-based underground continuous wall construction method and the formwork structure provided by the application do not need to be dismantled, and the construction efficiency and the crack resistance and corrosion resistance of the continuous wall are improved.

The utility model provides an assembly type building prefabricated wallboard with an anti-seismic energy dissipation structure, and relates to the technical field of building prefabricated wallboards, the assembly type building prefabricated wallboard comprises a front wallboard main body, the rear end face of the front wallboard main body and the front end face of a rear wallboard main body are fixedly installed and connected through an adhesive, and at the moment, a rear containing groove and a front containing groove jointly form a sound absorption energy dissipation cavity; sound waves enter the sound absorption cavities with the interior being of a spherical structure, the incident sound waves are subjected to the total reflection effect through the inner circumferential arc faces of the spherical cavities, and sound energy is converted into heat energy to be consumed through multiple times of reflection attenuation of the sound waves in the cavities in combination with the friction of the wall faces of the cavities and the viscous effect of air media; a continuous acoustic conduction network is formed, after sound waves are reflected for multiple times in a single spherical cavity, part of energy enters the adjacent cavities through the sound conduction reflection holes, the cross-cavity linkage reflection energy consumption process is triggered, and the problem that the sound wave treatment capacity of a traditional prefabricated wallboard is limited, and the comprehensive requirement of a building cannot be met is solved.

The invention relates to the technical field of auxiliary frames, in particular to a damping connecting mechanism for a forming auxiliary beam and a main beam of a cross-country chassis, the damping connecting mechanism comprises an upper corner brace and a lower corner brace, the upper corner brace is fixedly connected with the forming auxiliary beam, the lower corner brace is fixedly connected with the main beam, the upper corner brace is provided with a connecting module, and the connecting module comprises an outer shell and a connecting rod. The outer shell is fixedly connected to the upper corner connector. By means of the magnetorheological fluid damping buffer structure, traditional rigid connection is changed into controllable flexible connection, relative deformation of a certain amplitude of the main beam is allowed, structural stress is released, cracking of the main beam caused by stress concentration is avoided, the viscosity of magnetorheological fluid can be changed in real time through a coil adjusting magnetic field, and the connection rigidity and damping are dynamically adjusted; the working condition requirement that the secondary beam of the new energy cross-country motor home bears a large-mass battery pack is met, and when the vehicle generates large inertial impact, the connecting rigidity can be rapidly improved, excessive swing of the secondary beam is restrained, and the vehicle running stability is improved.

The utility model discloses a connecting device for enhancing integrality of a steel frame, which comprises an inner connecting frame, an outer connecting frame and a plurality of outer connecting frames, the inner connecting frame is arranged on the inner side of each outer steel frame, and the inner connecting frames are used for connecting the inner sides of the outer steel frames; the outer connecting frames are arranged on the outer sides of the outer steel frames, and the outer connecting frames are used for connecting the outer sides of the outer steel frames; the number of the two-way adjusting connecting assemblies is at least one, and the two-way adjusting connecting assemblies are arranged between the inner connecting frame and the outer connecting frame. The two-way adjusting connecting assembly is used for connecting the inner sides of the outer steel frames through the inner connecting frame and connecting the outer sides of the outer steel frames through the outer connecting frame so that the integrity of the outer steel frames can be enhanced. And the primary support has higher overall deformation resistance.

The utility model relates to the field of integrated lower shell equipment discloses a supporting structure integrated lower shell, including lower casing, the upper surface fixed mounting of lower casing has the circular ring, the inside of lower casing is provided with supporting assembly, the bottom of lower casing is provided with auxiliary assembly, the left surface of lower casing is set up and connects the interface, the left surface of interface is set up and has the locating slot, the auxiliary assembly includes the auxiliary block, the bottom fixed connection of auxiliary block has the locating plate, the upper surface of locating plate is set up and has the locating hole, the upper surface fixed connection of locating plate has a plurality of magnetic strips. In the utility model, through the mutual cooperation of locating ring, compression spring, supporting column and other parts in the equipment, axial floating support is formed, the compression spring can controllable compression energy absorption and automatic reset when the rotating part is impacted, eliminates axial movement and resonance, guarantees power transmission coaxial degree and long-term sealing reliability.

The present application relates to the technical field of vehicle body structure, and particularly refers to a vehicle body structure with reinforced IBC mounting part and a processing method. The vehicle body structure comprises a front wall assembly, the front wall assembly comprises a front wall, a reinforcing plate and a reinforcing beam which are all arranged on the rear side of the front wall, the reinforcing beam is vertically fixed in the middle region of the front wall to form a cavity beam structure with the front wall; the reinforcing plate comprises a fitting part which is fixedly attached to the IBC mounting plate, and a reinforcing part which is integrally connected to the fitting part, the fitting part is provided with a mounting hole group for mounting IBC corresponding to the IBC mounting plate, the reinforcing part surrounds the fitting part and is fixedly attached to the front wall to form a cavity beam structure with the front wall, and is used for transmitting load to the front wall, and the opposite sides of the reinforcing part and the reinforcing beam are fixedly attached to the front wall in a laminated manner. The longitudinal and vertical strength of the front wall can be improved by the reinforcing beam, the cavity beam structure is formed between the reinforcing plate surrounding the IBC mounting part and the front wall, the load of the IBC can be dispersed to the reinforcing part and the front wall to suppress shaking during driving.

An independent air suspension supporting arm relates to the technical field of vehicle accessories and comprises an air bag supporting arm and a shock absorber supporting arm, the air bag supporting arm and the shock absorber supporting arm are integrally formed, an air bag mounting hole is formed in the connecting position of the air bag supporting arm and the shock absorber supporting arm, and the end of the air bag supporting arm is arranged to be a mounting end. The bottom of the air bag supporting arm is sequentially provided with a plurality of special-shaped structure grooves from the mounting end to the shock absorber supporting arm in the extending direction of the air bag supporting arm. And a shock absorber mounting hole is formed in the end part of the shock absorber supporting arm. The air bag supporting arm and the shock absorber supporting arm are integrated, the forming efficiency can be improved, the production cost can be reduced, the connecting strength and rigidity can be improved, and the product quality and the use safety can be improved.

The utility model provides a mounting bracket of a dynamic vibration absorber, which is used for vibration test of a vehicle, the dynamic vibration absorber comprises a mounting hole, the mounting bracket comprises a mounting seat, a first connecting piece and a second connecting piece, and the mounting seat is provided with a mounting surface which can be rigidly and detachably bonded with a to-be-tested part of the vehicle; the first connecting piece is fixedly connected with the mounting seat, and comprises a mounting rod which is matched with the mounting hole and can penetrate through the mounting hole to extend out; and the second connecting piece is detachably connected to the mounting rod and compresses and fixes the dynamic vibration absorber on the mounting bracket. According to the utility model, the technical problem that the process of replacing the dynamic vibration absorber in a real vehicle verification stage takes a long time can be solved.

The utility model relates to the technical field of iron tower precast concrete, in particular to an anti-seismic and anti-skid electric power iron tower precast concrete foundation structure which comprises a concrete foundation body and connecting supporting columns. A bump, an extension rod and a clinging plate in the anti-skid positioning assembly, and a rubber plate, a shock-absorbing damper, a supporting plate, a connecting column and the like in the shock-absorbing buffering assembly are arranged; through the mutual matching relation between the connection of the convex block and the extension rod, the vibration energy absorption of the rubber plate and the shock absorption damper, the load transmission of the supporting plate and the connecting column and other components, the convex block can be embedded into a foundation soil layer through the inverted convex structure to form mechanical anchoring; the rubber plate buffers earthquakes or dynamic loads through elastic deformation and the shock absorption damper through the energy dissipation effect, and then the effects that the device can enhance the friction force and anchoring force of the soil body through the anti-skid positioning assembly, reduce vibration impact through the shock absorption buffering assembly and effectively improve the anti-seismic performance and anti-sliding capacity of the electric power iron tower foundation are achieved.

The utility model discloses a variable diameter gate front sealing assembly of multilayer pad iron structure relates to the technical field of gate front sealing, and it is front end middle part of sealing rubber body has arc concave surface no.

The application discloses a kind of for existing gravity retaining wall heightening remediation structure, it is related to geotechnical engineering technical field, solve the technical problem that existing heightening method is difficult to make gravity retaining wall after heightening simultaneously meet the design requirement of anti-overturning, anti-sliding and foundation bearing capacity.The remediation structure includes second retaining wall and reinforced soil composite component, second retaining wall is connected with first retaining wall, and the opposite surface of first retaining wall and second retaining wall is provided with matching planting steel hole, and steel is arranged in planting steel hole and is injected with bonding material, and the opposite surface of first retaining wall and second retaining wall is coated with interface agent;The laying direction of reinforced soil composite component is perpendicular to the wall surface of second retaining wall, and reinforced soil composite component includes alternately stacked geogrid and reverse packing soil bag.This remediation structure is through the synergistic working principle of "load reduction-connection-reinforcement", significantly reduces active earth pressure under the premise of not needing to increase foundation load substantially, improves retaining wall anti-overturning and anti-sliding stability.