25results about How to "Low post-maintenance costs" patented technology

The invention discloses a mass concrete composite anti-crack structure and a crack control construction method based on the mass concrete composite anti-crack structure. The composite anti-crack structure comprises a core common concrete layer, an outer side anti-crack concrete layer, a reinforcing mesh arranged between the core common concrete layer and the outer side anti-crack concrete layer, and a top anti-crack concrete layer. The method comprises the steps that firstly, the thickness of side face anti-crack concrete and the thickness of top face anti-crack concrete needing to be poured are calculated according to cracking risk assessment, the side face anti-crack concrete is poured firstly, then core common concrete is poured, and it is ensured that the pouring height of the side face concrete is always 20-30 cm higher than the core common concrete; and then the top surface is completely constructed by adopting anti-crack concrete. The reinforcing mesh subjected to special treatment is adopted, so that the overall stress of the composite structure is uniform, the overall anti-cracking performance and durability of the composite structure are improved through the outer side anti-cracking concrete, the construction technology is simple, meanwhile, a large amount of construction cost and operation and maintenance cost can be saved, and the composite structure is suitable for application and popularization.

The invention relates to a foam concrete light-weight embankment capable of alternately maintaining traffic by lifting a longitudinal slope during reconstruction and expansion of a road, which adopts foam concrete to construct and expand the embankment and to lift the embankment by the longitudinal slope, so that the dead weight of the embankment is reduced, the settlement amount of a new roadbed is reduced, the differential settlement between the new roadbed and the old roadbed is reduced, and the later maintenance cost is reduced; during foam concrete construction, a plurality of reinforcing mesh anchoring measures are set layer by layer, so that the stability of the reinforcing meshes in the foam concrete pouring process is improved, and the construction quality of the light embankment is further improved; the new roadbed and the old roadbed are anchored through the reinforcing mesh hanging type supports, the Z-shaped supports and the claw-shaped supports, and the integrity between the original roadbed and the widened longitudinal slope lifting embankment is improved.

The invention discloses a pre-tensioning method CFRP rib concrete hollow slab, a tensioning anchorage device and a construction method.The pre-tensioning method CFRP rib concrete hollow slab comprises CFRP embossed ribs, a framework structure, spiral ribs, PVC pipes, cushion blocks and concrete, the cushion blocks are arranged on the lower sides of bottom plate steel bars and the outer sides of vertical steel bars on the two sides respectively, and the CFRP embossed ribs are distributed at equal intervals, arranged in the framework structure and used for tensioning the framework structure; the spiral ribs penetrate through the prestressed CFRP embossed ribs and then are placed at the two ends of the bonding sections of the prestressed CFRP embossed ribs, the PVC pipes penetrate through the prestressed CFRP embossed ribs and then are placed at the two ends of the prestressed CFRP embossed ribs, unbonded sections are formed, concrete is poured on the periphery of the framework structure in cooperation with a mold after the CFRP embossed ribs are tensioned, the mold is dismantled after the concrete is formed, and the prestressed CFRP embossed ribs are formed. And the pre-tensioning method CFRP bar concrete hollow slab structure is formed. According to the scheme, the CFRP embossed ribs can be reliably bonded with concrete under high prestress, and bonding slippage failure is avoided. And secondly, provided anchoring is reliable, and shear damage of the CFRP ribs during tensioning is avoided.

The invention discloses an externally-wrapped concrete UHPC-stainless steel combined formwork air shaft structure and a construction method, the externally-wrapped concrete UHPC-stainless steel combined formwork air shaft structure comprises a UHPC-stainless steel combined formwork, staggered hole PBL shear keys, a reinforcement cage and external concrete, the UHPC-stainless steel combined formwork comprises a stainless steel cylinder and prefabricated UHPC, and the staggered hole PBL shear keys are arranged on the outer wall of the stainless steel cylinder. The performance advantages of a combined structure and an assembly type structure are combined, the rigidity and the bearing capacity of the UHPC-stainless steel combined formwork are enhanced, and the problems that a traditional stainless steel sheet is prone to deformation, bulging and protruding in the construction stage are effectively solved. Connection of the prefabricated UHPC, the stainless steel cylinder and external concrete is completed through the staggered hole PBL shear keys, the shear resistance between interfaces is improved, and cooperative work of all parts is guaranteed. The modular assembly type construction technology is adopted, the construction efficiency and the construction progress can be remarkably improved, the well wall thickness and the material consumption are reduced, and the method has remarkable performance advantages and wide application prospects in nuclear engineering structures.

The utility model provides a spring type jacking device assembly and an automobile. The spring type jacking device assembly comprises a sleeve, a first spring, a sliding rod, a jacking base, an assembly hole, a guide sleeve and an elastic limiting structure. A first spring, a sliding rod and a guide sleeve are arranged in the sleeve, the guide sleeve is arranged in the axial direction of the sleeve, one end of the sliding rod is axially installed in the guide sleeve in a sliding mode, and the other end of the sliding rod is connected with the jacking base. The peripheral sides of the guide sleeve and the sliding rod are sleeved with the first spring, one end of the first spring abuts against the sleeve, and the other end of the first spring abuts against the jacking base; an elastic limiting structure capable of stretching out and drawing back in the radial direction of the jacking base is arranged on the jacking base, an assembly hole is formed in the side wall of the sleeve, and the jacking base can be clamped in the assembly hole through the elastic limiting structure to achieve an assembly state or can be in a pop-up state by pressing the elastic limiting structure and under the elastic force action of the first spring. The jacking device is of a reversible structure and can be repeatedly used through resetting, and the later maintenance cost is reduced.

This utility model provides a mold that utilizes the mold opening force of an injection molding machine to drive the ejection mechanism of the molded product. It relates to the field of mold technology and includes a movable side, a fixed side, an ejection mechanism, and a driving mechanism. The driving mechanism includes a pull plate, a rocker arm, a guide structure, and a rotating shaft. The pull plate is installed on the movable side, and the rocker arm is connected to the ejection mechanism via the rotating shaft. A guide pin guides the rocker arm. Both the pull plate and the rocker arm are equipped with hook structures. This design, by using a driving mechanism composed of a pull plate, rocker arm, guide structure, and rotating shaft, offers a simple and reliable structure with minimal installation space, reducing mold and injection molding costs. After the mold completes the ejection action, the rocker arm can disengage from the pull plate, allowing the movable side to continue performing larger mold opening actions, meeting the needs of a robotic arm to enter the mold and remove the product. The mold opening stroke is not affected by the mold thickness.

The utility model discloses an offshore triangular flow blocking net cage which comprises a first buoyancy pipe, a second buoyancy pipe and a third buoyancy pipe, the first buoyancy pipe, the second buoyancy pipe and the third buoyancy pipe are connected end to end to form a triangular structure, and a reinforcing pipe is arranged in an area defined by the first buoyancy pipe, the second buoyancy pipe and the third buoyancy pipe. The first buoyancy pipe, the second buoyancy pipe and the third buoyancy pipe are connected through reinforcing pipes. The triangular structure formed by combining the first buoyancy pipe, the second buoyancy pipe and the third buoyancy pipe has good stability, the structural strength and the anti-flow stability of the net cage are improved, the vertex angle of the triangle formed by connecting the first buoyancy pipe and the second buoyancy pipe is arranged towards the seawater flowing direction, and seawater flow division is effectively achieved; meanwhile, the first buoyancy pipe and the second buoyancy pipe are obliquely arranged, so that the water flow diffuses towards the two sides and flows backwards along the first buoyancy pipe and the second buoyancy pipe, and the pressure of the incident flow surface of the net cage is effectively reduced.

The invention relates to a high and steep rock slope self-water-storage vegetation groove greening system and a construction method, and adopts a prefabricated assembly mode, so that the wet construction amount of a construction site is reduced, and the construction noise and dust pollution are reduced; the water collecting tank is used for collecting rainwater in the drainage ditch, a self-water-storage structure is formed and used for quantitative irrigation, stable support is provided for subsequent ecological regreening, the survival rate of vegetation is effectively increased, and the later maintenance cost is reduced; the plant net, the self-water-storage planting groove and the self-water-storage planting groove are combined for regreening, herbaceous plants and plants are planted respectively, the construction effect of regreening of the high and steep rock slope is greatly improved, the regreened slope has the landscape aesthetics, and the landscape value is created.

The utility model relates to the technical field of logistics transportation, and discloses a double-sided logistics tray structure which comprises a panel and supporting blocks. The reinforcing structure comprises a rib plate, overturning bodies, clamping protruding blocks and clamping grooves, the multiple clamping grooves are formed in the bottom of each panel, the multiple overturning bodies are rotationally connected to the top face and the bottom face of the rib plate, each overturning body is fixedly provided with one clamping protruding block, and the supporting effect between the two panels is improved through the rib plate and the overturning bodies; the strength and the bearing capacity of the whole tray structure are improved, each rib plate is designed to be detachable, even if the panels and the rib plates are damaged due to the fact that local stress of the panels is too large, the single panels and the single rib plates can be replaced, modular assembly is achieved, the later maintenance cost is further reduced, and waste is reduced; the strength and the stability of the whole tray structure are guaranteed, the connection of the rib plates and the panels can be completed by rotating the overturning body in a mode of extruding the two panels, the installation is simple and convenient, and the efficiency is high.

The application discloses a hydraulic separation type detachable centralizer for oil sucker rod and relates to the technical field of centralizers, which comprises a fastening concave frame, a mounting mechanism is arranged in the fastening concave frame, and a stabilizing mechanism is arranged on one side of the mounting mechanism; the mounting mechanism comprises a transmission screw rod, a transmission rod is connected to one end of the transmission screw rod, a servo motor is mounted at one end of the transmission rod, a first threaded ring is arranged outside the transmission screw rod, and a first connecting branch plate is connected to one side of the bottom end of the first threaded ring. The mounting mechanism and the stabilizing mechanism are arranged to quickly extrude and centralize the oil sucker rod, the extrusion fixing does not need bolts, labor is saved, the upper and lower parts are installed together, installation efficiency is higher, installation is faster, operation is simple and easy to use, time and labor are saved, practicality is better, the stability of the bottom of the centralizer is effectively improved, stability is maintained, the centralizing effect is better, and the bottom stability is maintained.

The mold comprises a prefabricated bottom plate, a first rectangular column mold plate and a second rectangular column mold plate, the first rectangular column mold plate is installed at the upper end of the prefabricated bottom plate, the upper end face of the first rectangular column mold plate is provided with an opening, and the second rectangular column mold plate is installed on any side edge of the left side and the right side of the first rectangular column mold plate; the upper end face of the second rectangular column formwork is open, the second rectangular column formwork is higher than the first rectangular column formwork, the left side length and the right side length of the second rectangular column formwork are smaller than those of the first rectangular column formwork, and an open hole communicated with the first rectangular column formwork is formed in the bottom of the second rectangular column formwork. A concrete block structure constructed by the first rectangular column formwork and the second rectangular column formwork can be prefabricated, and prefabricated stacks can be clamped to gaps of wall bodies on the left side and the right side through the concrete block structure constructed by the second rectangular column formwork; and the concrete block structures constructed by the first rectangular column templates are mutually stacked to form a rectangular box body mounting groove which is inwards concaved in the surface of the wall body main body.

The invention provides anti-seepage commercial concrete and a preparation method thereof, and relates to the technical field of building materials, and the anti-seepage performance of the anti-seepage commercial concrete is remarkably improved through a scientific proportion and a unique preparation method. The permeability coefficient is greatly reduced, water permeation can be effectively prevented, and the problems of structural damage, steel bar corrosion and the like caused by water invasion of a building are avoided. Therefore, the service life of the building is prolonged, and the later maintenance and reinforcement cost is reduced. For example, in underground waterproof engineering, by using the concrete, the risk of basement leakage can be remarkably reduced, dryness and safety of underground space are guaranteed, a comfortable environment is provided for a user, the compressive strength of the concrete in 7 days and 28 days is remarkably improved through the optimized raw material combination and the preparation process, and the concrete has good waterproof performance. A large amount of fly ash, mineral powder and other industrial waste residues are used for replacing part of cement, comprehensive utilization of resources is achieved, and energy consumption and environmental pollution in the cement production process are reduced.

The invention discloses an economical water-based anti-cracking colored pavement structure, and relates to the technical field of pavement colored coating, the economical water-based anti-cracking colored pavement structure comprises a pavement base layer, an interface treatment layer, a buffer layer, an anti-cracking layer, a reinforcing layer and a wear-resistant layer from top to bottom, the buffer layer comprises a buffer bottom plate layer located on the bottom layer and a buffer top plate layer located on the upper layer, the buffer bottom plate layer and the buffer top plate layer are connected through a plurality of buffer assemblies, each buffer assembly comprises a welding seat integrally welded to the bottom of the buffer top plate layer, and a vertical frame is integrally connected to the bottom of each welding seat; a damping seat is integrally welded to the top of the buffering bottom plate layer. The colored pavement material cost can be reduced, the cracking phenomenon can be reduced, the later maintenance cost can be greatly reduced, the old pavement construction effect is good, the cracking phenomenon of the old pavement cannot appear, and the problem that the appearance is affected by coating cracking of the surface layer of a later finished product due to roadbed cracking is solved.

The utility model discloses a kind of six-prong block solid stone slope protection structures, including multiple six-prong blocks, multiple six-prong blocks inside are provided with up and down through grass planting cavity;Multiple six-prong blocks are provided with at least 6 through holes at height direction 1 / 3 along horizontal direction through;Multiple through hole is through with steel wire A and steel wire B reinforcement fixed;Multiple six-prong blocks are laid along box culvert boundary boundary line and cut-off flood drainage channel top boundary line respectively, six-prong block inside located in edge area is filled with concrete by concrete filling cavity, to form boundary reinforcement area.The six-prong block solid stone slope protection structure of the utility model not only improves the structural stability and ecological performance of slope protection, also has the advantages such as convenient construction, cost benefit is high, durability is strong and water permeability is good.

The invention discloses a fabricated welding-free multi-angle adjustable curtain wall embedded part which comprises an embedded plate and at least two detachable supporting plates, the at least two detachable supporting plates are fixedly connected with the embedded plate through fixing bolts, elliptical long holes are formed in the embedded plate, elliptical inclined holes are formed in the detachable supporting plates, and the elliptical long holes are communicated with the elliptical inclined holes. The fixing bolts penetrate through the oval long holes and the oval inclined holes to fixedly connect the embedded plate and the detachable supporting plate. The installation precision of the curtain wall supporting piece is guaranteed through multi-angle adjustment, so that the installation precision of the curtain wall keel is guaranteed, the construction quality of the curtain wall is improved, the welding-free construction technology is utilized, and the situation that welding damage is caused to the prefabricated embedded plate due to welding, and consequently the safety and stability of the whole curtain wall are affected is avoided. And assembly type installation is adopted, replacement can be convenient, and the later maintenance cost is reduced.

The utility model discloses a novel transmission line river-crossing tower foundation relates to transmission line engineering technical field, it includes four independent foundation and three layers of link beam, three layers of link beam are arranged at four independent foundation between along vertical direction interval, for the whole reinforcement of four independent foundation and the stress synergy, every independent foundation all includes foundation bottom plate and foundation stand, and foundation bottom plate horizontal arrangement, its top and the bottom fixed connection of foundation stand, three layers of link beam include upper layer link beam, middle layer link beam and lower layer link beam, upper layer link beam is close to the bottom setting of iron tower tower leg, and middle layer link beam sets up in the middle position of foundation stand height direction, and the bottom of lower layer link beam is flush with the top of foundation bottom plate. The utility model scheme can adapt to the soft soil of river bank, and the whole stress synergy performance is good, can effectively resist water environment erosion, and the service life is long.

The invention provides an electro-hydraulic control intelligent spraying method and device for a coal mine goaf stopping agent, and belongs to the technical field of coal mine fire prevention. The problem that at present, the underground inhibitor spraying effect is poor or spraying time is not timely is solved. A stopping agent spraying device is additionally arranged on the basis of an existing hydraulic support electro-hydraulic control device, stopping agent spraying control is carried out through the hydraulic support electro-hydraulic control device, and stopping agent spraying operation of a single support, multiple supports and a group can be carried out according to a program; the problem of spontaneous combustion of the residual coal in the goaf can be solved, accurate and intelligent spraying of the inhibitor after frame moving is achieved through the electro-hydraulic control technology, and the risk of fire outbreak of the residual coal in the coal mine goaf is effectively prevented.

The invention relates to a complex steep terrain foam concrete broadened light embankment and a construction method, the foam concrete construction broadened embankment is adopted, and the dead weight of the embankment is reduced, so that the settlement amount of a new roadbed is reduced, the differential settlement between the new roadbed and the old roadbed is reduced, and the later maintenance cost is reduced; before foam concrete construction, the protective canopy is arranged at the top of the concrete retaining wall, the protective canopy covers the position above the pouring position of the widened embankment, it is guaranteed that the foam concrete construction is not affected by weather, and then the construction progress is accelerated; the new roadbed and the old roadbed are anchored through various anchoring assemblies, and the integrity between the original roadbed and the broadened roadbed is improved.

The invention relates to the technical field of membrane structures, and discloses a drainage device and a shielding system.The drainage device is used for being fixedly connected between a supporting structure and a membrane structure and comprises a drainage structure fixed to the supporting structure and provided with a containing cavity, and the end, away from the supporting structure, of the drainage structure is fixedly connected with the membrane structure; the drainage part is arranged in the containing cavity, a drainage channel is formed in the drainage part, and the bottom end of the drainage part is obliquely arranged and used for draining water in the drainage channel. The drainage piece is arranged, and the bottom end of the drainage piece is obliquely arranged to form the drainage slope, so that water in the drainage channel can be completely drained, and the membrane structure can be set to be a plane structure, so that the use of supporting components is reduced, the construction cost and the construction difficulty are reduced, the stress is more uniform, and the structural stability is better; the self-weight of the structure can be reduced, so that the service life and the bearing capacity of the structure are improved; sediment is prevented from depositing in the drainage channel, and the later maintenance cost can be reduced.

The invention discloses a water-retention anti-cracking agent for a cement stabilized macadam road base and a preparation method thereof, and belongs to the technical field of road base additives. The adhesive is prepared from the following raw materials in percentage by weight: 32%-35% of acrylic acid, 5%-7% of ammonium persulfate, 6%-8% of hydroxymethyl sodium sulfite, 6%-8% of ethylene glycol diacrylate, 0.3%-0.5% of azodiisobutyronitrile, 6%-8% of sodium carbonate, 8%-13% of magnesium oxide, 10%-15% of diatomite and 10%-14% of calcium sulphoaluminate. The water-retention anti-cracking agent can be used as a road base additive to improve the strength of a cement-stabilized base and effectively reduce the cracking problem caused by self-shrinkage of the cement-stabilized base.

The invention relates to the technical field of intestinal tract treatment, and discloses an edged capsule movement complete ileum hovering device and method, which comprises a peristaltic shell, a driving mechanism is arranged at the tail end of the peristaltic shell, a hovering mechanism is arranged in the peristaltic shell, an administration mechanism is arranged at the head end of the peristaltic shell, and a linkage mechanism is further arranged at the position, close to the administration mechanism, of the peristaltic shell; the driving mechanism is arranged in the wriggling shell, the driving mechanism drives an opposite lantern ring of the hovering mechanism to move oppositely, so that a connecting rod assembly drives a movable assembly to form an opening state, the device hovers at the ileum section, and a linkage mechanism drives the dosing mechanism to form a wriggling state along with the intestinal tract and a hovering continuous dosing state; a patient with the ileitis disease can obtain more accurate and effective treatment, the medicine directly acts on a focus area, and the risk of systemic absorption and adverse reaction is reduced; meanwhile, the continuous administration mode ensures that the effective drug concentration is maintained at the focus part for a long time, and inflammation fading and tissue repairing are facilitated.

The utility model provides a device for real-time maintenance of a concrete structure, which comprises a fire hydrant, one end of a fire-fighting pipe is connected with the fire hydrant, the other end of the fire-fighting pipe is pre-buried underground in advance and extends into a water collecting tank, and the water collecting tank internally comprises an oil separation tank, a primary sedimentation tank and a secondary sedimentation tank; an outlet of the water collecting pool is connected with one end of a water pump through a pipeline, the other end of the water pump is connected with a water pipe, the other end of the water pipe is connected with a ground pump pipe through an adapter, the ground pump pipe extends to a pouring floor all the time, the ground pump pipe is connected with the water pipe through an adapter at a ground pump pipe port on the pouring floor, and water can be pumped to maintain a board after a power supply is switched on. The utility model can solve the potential quality hazard problems of concrete strength reduction and concrete cracking caused by the fact that temporary water and fire-fighting water cannot be maintained in time due to the influence of basement structure construction, ensures that the concrete is maintained in place, simultaneously can reduce water resource waste and installation labor cost, and has better economic benefit.

The application relates to a semi-assembled RPC-PC bundle shear wall combined structure which comprises a lower end beam, a shear column and an upper end beam. The two ends of the shear column are fixedly connected with the lower end beam and the upper end beam respectively; the shear column comprises an active powder concrete outer mold and ordinary concrete filled in the internal space of the active powder concrete outer mold. The RPC-PC bundle shear wall utilizes the material advantages of RPC, can improve the stress performance and the anti-seismic performance of the shear wall, and can also improve the fire resistance, impact resistance and corrosion resistance of the shear wall. On the other hand, the RPC is prefabricated into the outer mold plate of the shear wall to form the RPC-PC bundle shear wall outer mold. The combined form can save a large amount of wood mold plates and steel mold plates, has a small influence on the surrounding environment, improves the work efficiency, can reduce the maintenance cost in the later period, and has a wide engineering application prospect.

The utility model discloses an anti-thrust structure of a vehicle and the vehicle. The anti-thrust structure comprises a vehicle frame and a thrust structure, the vehicle door is arranged on the vehicle frame; the headlamp assembly is arranged on the vehicle frame and located in front of the vehicle door; the fender is arranged on the side, close to the headlamp assembly, of the automobile door, and the part, away from the automobile door, of the fender is connected with the headlamp assembly; and the thrust piece is arranged on the frame, and the thrust piece is arranged on the side, facing the vehicle door, of the headlamp assembly so as to abut against the headlamp assembly when the headlamp assembly collapses. Due to the fact that the anti-thrust piece is additionally arranged, the anti-thrust piece is installed on the vehicle frame and located behind the headlamp assembly, when collision occurs, the anti-thrust piece abuts against the headlamp assembly to reduce the backward displacement amount of the headlamp assembly, the backward displacement amount of the fender is reduced, the probability of deformation of the vehicle door is reduced, and the later maintenance cost is reduced.