162results about How to "Clear force" patented technology

The invention provides a large-span folding arc-shaped tide-blocking floating body gate structure and a using method, the large-span folding arc-shaped tide-blocking floating body gate structure is in a double-door form, and the large-span folding arc-shaped tide-blocking floating body gate structure comprises two gate libraries, the gate units are divided into an upper layer and a lower layer and can be folded in the gate chamber, each gate unit comprises an upper-layer tide-blocking floating body gate, a lower-layer tide-blocking floating body gate and an arc-shaped foundation, and the radius of the upper-layer tide-blocking floating body gate is larger than that of the lower-layer tide-blocking floating body gate; one end of the upper-layer tide-blocking floating body gate and one end of the lower-layer tide-blocking floating body gate are both hinged into a stress abutment on the shore side and are concentrically arranged in an ectopic mode, the arc-shaped foundation extends from the gate reservoir to the center of a river channel, and the upper-layer tide-blocking floating body gate and the lower-layer tide-blocking floating body gate rotate, move and unfold from the edge of the gate reservoir to the center of the river channel around hinge points of the upper-layer tide-blocking floating body gate and the lower-layer tide-blocking floating body gate. During tide blocking operation, the arc-shaped foundation, the upper-layer tide blocking floating body gate, the lower-layer tide blocking floating body gate and the stress abutment on the shore side are combined to achieve the tide blocking function.

The utility model relates to a cold-formed thin-walled steel fabricated structural system, and belongs to the technical field of structural engineering. Comprising combined joints, module main beams, module columns and module secondary beams. Column sleeves are arranged at the upper end and the lower end of the combined joint, a center joint is arranged between the column sleeves, horizontal partition plates are welded between the column sleeves and the center joint, a vertical end plate is welded to each side of the outer surface of the center joint, materials such as concrete can be poured into columns, and the bearing capacity and integrity of the combined joint are improved. The connecting sleeve has the beneficial effects and advantages that the connecting sleeve is small in size, light in weight and convenient to transport and hoist, the machining time is greatly shortened, the machining quality is guaranteed, modular design, factory production and specialized installation are integrally achieved through standardized modular production of components and the connecting sleeve, field assembly is simple and efficient, and the production efficiency is improved. The purposes of reducing labor, shortening the construction period and saving cost are achieved, and industrialization development of the fabricated building is promoted.

The utility model relates to the technical field of building structure engineering, in particular to a steel beam column joint structure suitable for steel beams with different section heights. Comprising steel columns and steel beams. Each flange connecting piece comprises a first connecting part in bolted connection with a steel beam flange and a second connecting part in bolted connection with a steel column; the first connecting part and the second connecting part are vertically intersected to form a T-shaped bending component; the web connecting piece comprises a third connecting part in bolted connection with a steel beam web and a fourth connecting part in bolted connection with a steel column; the third connecting part and the fourth connecting part are vertically intersected to form a bent component; the corner connecting pieces are used for fixedly connecting the adjacent second connecting parts which are located on the different sides of the steel column and located at the different section heights into a whole in the horizontal direction. The steel beam column joint structure is good in overall stress, extremely high in stability and easy to install and assemble.

The utility model provides a prefabricated column and a connecting structure of the prefabricated column and a prefabricated beam, the prefabricated column comprises a column body and a second steel connector arranged on the side face of the column body, and the connecting structure comprises a first steel connector and the second steel connector which are arranged at the beam end; the first steel connector is I-shaped, the pre-embedded upper and lower flanges of the first steel connector are in lap welding connection with the longitudinal bars in the beam, the pre-embedded web plate is provided with a hole and / or a welding stud, and the exposed web plate is provided with a bolt hole; the second steel connector comprises I-shaped steel, an anchor plate and a plurality of anchor bars, the anchor plate and the I-shaped steel are located inside and outside the column respectively, part of the first anchor bar is located inside the column, part of the first anchor bar is located outside the column and is in lap welding with an upper flange and a lower flange of the I-shaped steel, and the second anchor bar is located inside the column and is welded with the anchor plate. The webs are connected through bolts, and stirrups are arranged on the embedded portion of the first steel connector and the connecting area of the two steel connectors respectively. The structure is simple, the steel consumption of the connecting joint can be reduced, and construction is convenient.

The invention relates to a bridge temporary supporting system and a bridge jacking method. The bridge temporary supporting system comprises multiple layers of steel boxes, two steel boxes arranged in the height direction of a bridge in any two adjacent layers of steel boxes are fixedly connected, and a splice plate is fixed between any two adjacent steel boxes in each layer of steel boxes; the jack and the steel box on the top layer are located on the same layer. The steel box can be modularly assembled through the jack, so that the service time of large construction machinery can be greatly shortened, channel operation is not influenced during operation, a navigation channel is not occupied, navigation is not closed during construction, navigation safety is guaranteed, temporary support of a bridge is realized, and subsequent displacement protection of the steel truss girder is facilitated.

The invention belongs to the technical field of road engineering roadbed treatment, and particularly relates to a riprap silt squeezing depth calculation method based on energy conservation. The calculation method comprises the following steps: S1, assuming a simplified calculation working condition, and respectively calculating gravitational potential energy of block stones and soil blocks by taking the block stones and wedge-shaped soil blocks at the lower part after the block stones enter a soil body as research objects; s2, calculating resistance work and buoyancy work of the block stone in water, side soil shear work of the block stone when the block stone moves in the sludge, and soil pressure and shear work of the soil block; s3, establishing a balance equation of the total potential energy and the total resistance acting; and S4, calculating the riprap silt squeezing depth according to the equation. According to the method, the problem of establishment of the balance equation in the overwater riprap process is solved by utilizing the principle of conservation of energy, the design difficulty of engineers and the extra workload of parameter valuing are effectively reduced on the basis of ensuring the calculation requirement, and the scheme decision-making efficiency is favorably improved.

The utility model relates to the technical field of engineering construction, in particular to a connecting structure with adjustable parallel connection length for a few-support system, which comprises a connecting standard pipe fitting and a connecting flange, and the connecting flange comprises a steel hoop used for being arranged on a steel pipe pile or a steel stand column. The two side ends of the steel hoop are each provided with a flange plate used for being connected with the end of a standard pipe fitting. The connecting sleeve is used for connecting two sections of standard pipe fittings to achieve splicing, and anchoring structures used for being connected with the standard pipe fittings to be matched are arranged at the two ends of the connecting sleeve. The connecting structure is convenient to mount and dismount, and welding operation is greatly reduced.

The utility model discloses a middle stand column system of a photovoltaic flexible support capable of adapting to a super-large slope mountain land, which comprises a support formed by a vertically arranged middle stand column and a horizontally arranged middle top beam, and the side face of the support is movably connected with an inner support. The flexible support has the advantages that the structure is more stable and reliable, stress is clear and reasonable, and the problem that a traditional flexible support is prone to large-scale collapse is effectively eradicated; the lateral stiffness is higher, the problem of prestress relaxation of the steel strand can be solved, and the deflection of the cable can be reduced; the matched foundation can be smaller in pile diameter and pile depth, so that the system construction cost is effectively saved; the root node is more stable and reliable under the complex crosswind working condition; the installation efficiency is high, the error-tolerant rate is high, and the adaptability is high under different slopes.

The invention relates to the field of bridge construction, and discloses a main channel cross-sea bridge tower pier side steel beam sliding support construction method which comprises the following steps that a guide beam set and two steel box beams are assembled on an assembling support through a crawler crane on a trestle, and a beam erecting crane is assembled on the assembled steel box beams; hoisting the steel box girder to the sliding bracket by using a floating crane, dragging the steel box girder to a designed position along the sliding bracket, and hoisting the suspended splicing steel box girder by using a girder erection crane until the erection of the side span steel girder frame is completed; by using the slideway beam as the upper part bearing structure of the sliding bracket, the traditional structure adopting a plurality of groups of bailey trusses as a bearing system is changed, and meanwhile, a distribution beam structure arranged above the bailey trusses is also omitted, so that the layer number of the upper part structural beams of the sliding bracket is reduced, the structural design of the sliding bracket is simplified, and the construction cost is reduced. In addition, the gravity center of the sliding support is lowered, and a supporting foundation is provided for stable sliding of the steel beam.

The invention relates to a large-displacement tensile device and a design method. The tensile device comprises a self-adaptive base, a tensile cable group, a first seat plate and a second seat plate, the self-adaptive base comprises a first tensile base, a second tensile base, a spring base and a self-adaptive spring; the first tensile base is arranged on the first seat plate; one end of the self-adaptive spring is connected with the first tensile base, and the other end of the self-adaptive spring is connected with the spring base; the second tensile base is connected with the second seat plate; and the tensile cable group penetrates through the first tensile base and the second tensile base to form a closed loop. Compared with the prior art, the tensile device can provide good vertical tensile capacity for the support in a limited space of an existing support system, and has the characteristics of multi-directional horizontal large-displacement adaptability, good fatigue resistance and stable and reliable mechanical property.

The utility model discloses an integral cast-in-place structure of a tower crane foundation and a basement bottom plate, which comprises the tower crane foundation which is a raft foundation and is provided with tower crane foundation steel bars; the structural bottom plate is arranged outside the tower crane foundation in a surrounding mode, the structural bottom plate and the tower crane foundation are integrally formed in a pouring mode, the structural bottom plate is provided with structural bottom plate longitudinal bars, and one ends of the structural bottom plate longitudinal bars are anchored into the tower crane foundation and fixedly connected with the tower crane foundation steel bars. The structural bottom plate and the tower crane foundation are integrally poured and formed, so that the anti-floating pressure of the structural bottom plate in the construction period can be effectively reduced, the later leakage hidden danger is reduced, and the field civilized construction level is improved.

The utility model relates to a sinking courtyard stair structure which is fixed on an outer wall of a sinking courtyard and comprises a middle frame, stair plates and a platform plate. The middle frame is arranged on one side of the sinking courtyard outer wall in parallel, one sides of the platform plates are connected with the middle frame, the other sides of the platform plates are connected with the sinking courtyard outer wall, the platform plates are distributed on the two sides of the middle frame in a staggered mode, and the stair plates are fixed to the left side and the right side of the middle frame and distributed on the front side and the rear side of the middle frame in a crossed mode. The two ends of the stair plates are connected with the platform plates on the two sides of the middle frame respectively. Compared with the prior art, the utility model has the advantages of reasonable and safe acceptance system, simple structure, wide application range and the like.

The invention discloses an anchoring device for external prestressing reinforcement of a bridge without damaging a beam body, and relates to the technical field of bridge engineering, the anchoring device comprises a concrete T-shaped beam, the two ends of the concrete T-shaped beam are fixedly connected with external prestressing anchoring assemblies respectively, and the external prestressing anchoring assemblies are fixedly connected through external prestressing tendons. According to the anchoring device for external prestressing reinforcement of the bridge without damaging the beam body, drilling and steel bar planting on the existing bridge body are not needed, the beam body is not damaged, the construction speed is high, and stress is clear.

The utility model discloses an assembly type telescopic tower crane man access platform device, including nested keel, cross bracing keel and antiskid steel sheet, the nested keel includes first square tube and second square tube, and the second square tube is inserted to the first square tube, is used for telescopic adjustment nested keel's overall length and is fixed through high -strength bolt connection, and a plurality of cross bracing keels are connected between two nested keels, and the cross bracing keel is flush with the top surface of the nested keel, and the antiskid steel sheet is laid on the nested keel and the cross bracing keel. The utility model solves the problem that traditional tower crane man access builds low efficiency, poor adaptability, insufficient safety, has the advantages of convenient assembly, telescopic adjustable, high reusability, safe and reliable, can be adapted to different models tower crane and construction working condition, effectively promotes construction safety and operation efficiency.

The application discloses a movable bridge deck panel installation platform and a construction method thereof. The movable bridge deck panel installation platform comprises a steel plate leg, an angle steel leg and a steel panel, is installed on the upper side of a bridge deck panel, the steel plate leg and the angle steel leg are supported on a main force component of a steel beam, load is transmitted to the main force component of the steel beam, the safety of the steel beam structure is ensured, a caterpillar crane is moved to the steel panel to perform hoisting operation, direct contact with the bridge deck panel is avoided, bridge deck panel cracking is avoided, compared with a traditional automobile crane or a special frame plate machine, the efficiency is higher and the economy is better, through a construction method of cyclically adopting a hoisting bridge deck panel, installing the movable bridge deck panel installation platform, moving the caterpillar crane to the installation platform, hoisting the next bridge deck panel, space occupation of a construction site is less, and the construction method has the advantages of convenient construction, rapidness, convenience, safety and the like.

The invention discloses an adjustable main buckling integrated type section steel tower cable wind connecting structure and a construction method thereof. The cable wind connecting structure comprises a tower side cable wind buckling and hanging connecting structure, a tower waist cable wind hanging connecting structure and a tower top cable wind connecting structure, and corresponding cable wind ropes, tensioning end universal joints and cable wind ground anchors matched with the cable wind connecting structure, the tower waist cable wind hanging connecting structure and the tower top cable wind connecting structure. The construction method comprises the following construction steps: step 1, calculating the stress of the section steel tower wind cable system; 2, a tower mooring rope anchoring device and a tensioning end are installed before the tower is installed; 3, a tower wind cable system is installed in the tower installation process; 4, the tower wind cable system is tensioned step by step; and 5, in the tower dismantling process, the wind cable system is released, pulled and dismantled step by step. The structure of the technology has the advantages of being simple in structure, safe, reliable, clear in stress, small in steel consumption and capable of adjusting the angle of the cable rope, meanwhile, the method is convenient to assemble and disassemble and high in construction efficiency, it can be guaranteed that the displacement of the section steel tower is within the allowable range when the section steel tower works, and the construction safety risk of tower cable hoisting and cable-stayed buckling operation is reduced.

This invention discloses a bridge pot bearing and control system based on system conversion. A first bearing body and a second bearing body are stacked from top to bottom. The first bearing body has a first mounting plate, and an adjustment component is installed below the first mounting plate. The second bearing body has a second mounting plate, and a test component is installed on the second mounting plate. The test component connects with the adjustment component. While performing pressure testing, the test component, in conjunction with the adjustment component, enables the conversion between three states: fixed pot bearing, unidirectional movable pot bearing, and bidirectional movable pot bearing. This invention monitors the stress on the bearing in real time, calculates the bridge shear force based on the reaction force, and derives the bridge shear force amplification factor under dynamic loads, thus improving bridge design methods and making bridge design safer and more reliable. It can realize the functions of a fixed bearing, a unidirectional movable bearing, or a bidirectional movable bearing, and achieve mutual conversion between bearing types.

The invention discloses a PC prefabricated small box girder top web node reinforcing steel bar structure which comprises top plate horizontal reinforcing steel bars, web U-shaped stirrups, top plate longitudinal reinforcing steel bars, corner longitudinal reinforcing steel bars, web longitudinal reinforcing steel bars and concrete, and reinforcing steel bar arrangement of a small box girder top web node is completed in the mode that top plate reinforcing steel bar meshes and web reinforcing steel bar meshes are manufactured respectively, assembling is conducted, and finally reinforcing steel bar penetrating is conducted. The top plate horizontal steel bars and the top plate longitudinal steel bars form a top plate steel bar mesh, the web U-shaped stirrups and the web longitudinal steel bars form a web steel bar mesh, and the top plate steel bar mesh is hoisted to the web steel bar mesh and then penetrates through the corner longitudinal steel bars to complete small box girder top web node steel bar arrangement. By optimizing the inclined steel bars at the lower corner and reinforcing the longitudinal steel bars at the corner in the traditional design, the top web node steel bars are optimally arranged, the mechanical property of the top web node is improved, meanwhile, the steel bar machining and arranging difficulty is lowered, and the problems that the top web node steel bars are various in specification, low in arranging and mounting efficiency and the like are solved.

The present application relates to the technical field of net rack structure reinforcement, and particularly relates to a welding-free full-assembled net rack rod piece reinforcement device and method. The device comprises: a fixed center bearing frame for reinforcing a circular tube component; a telescopic vertical sliding inclined strut assembly arranged between two adjacent vertical fixed vertical rods; an assembled sectional sleeve assembly for fixing the fixed center bearing frame outside the circular tube component; a cable body for connecting two connecting bases on the fixed center bearing frame; and a tensioning adjusting mechanism for adjusting the tension of the cable body. The welding-free full-assembled net rack rod piece reinforcement device and method provided by the present application adopts a welding-free full-assembled construction process, and the components are standardized prefabricated in a factory. The components are only assembled by bolts and pins at the site, so that the construction is safe and efficient, welding damage is avoided, and the original structure performance is not affected. The components are connected by bolts, so that the components are convenient to disassemble and assemble, the components can be recycled and reused, and the engineering cost is reduced.

The present invention relates to a high-inner-pressure, high-air-tightness, large-span space structure in high-altitude areas. The external structure is a self-balancing structural system formed by a plurality of annular load-bearing components surrounding an intermediate structure along their respective axial arrays; the intermediate structure is fixedly installed in the external structure, and the intermediate structure is assembled by a number of intermediate structural units; the internal structure is attached to the intermediate structure, and a whole air-film structure with high air-tightness is adopted. When the large space is not pressurized, the internal structure can be separated from the intermediate structure. After the large space is pressurized, the pressure makes the internal structure close to the intermediate structure; the external structure is installed on the supporting structure as a whole, does not contact the ground, and the supporting structure is installed on the ground. The large-span space structural system of the present invention is novel and has clear layers. The internal, middle, and external structures form a self-balancing force system, which can withstand a large internal pressure and can be realized by manual handling and assembly. It has a closed and pressure-bearing effect and meets the needs of pressurized oxygen supplementation.

The utility model relates to a hoop device used when a suspender arch rib is replaced in bridge engineering, in particular to a hoop for replacing the suspender arch rib. According to the device, the hoop is designed on the steel pipe arch rib, the triangular steel base plate is welded to the hoop, the carrying pole beam is placed on the triangular steel base plate, the carrying pole beam is prevented from sliding down, the requirements for strength, rigidity and stability are met, and the device is low in cost, safe, reliable, convenient to mount and dismount and capable of being repeatedly used. The device has the advantages of being good in stability, high in safety degree, low in cost and convenient to mount and dismount, and can meet the requirements of strength, rigidity and stability after being used for many times in practical engineering.

The utility model discloses an overwater double-limb areca-nut type power transmission tower steel structure which comprises two single-limb towers which are symmetrically arranged, each single-limb tower comprises an iron tower head section, an iron tower middle section and a tower top intersection section from bottom to top, the section of the iron tower head section of each single-limb tower is an inequilateral hexagon, and the section of the iron tower middle section of each single-limb tower is an inequilateral hexagon. The middle section of the iron tower of each single-limb tower is a non-equilateral quadrangle, the tower top intersection section is a triangular intersection section, and the tower top intersection sections of the two single-limb towers are intersected and closed to form a closed section; and the multiple layers of cross arms are arranged at different heights of the two single-limb towers in the vertical direction, each layer of cross arms comprises two cross arms, and the two cross arms are symmetrically arranged on the outer sides of the two single-limb towers correspondingly. The utility model further discloses an installation method of the overwater double-limb areca-nut type power transmission tower steel structure. The overwater double-limb areca-nut-shaped power transmission tower mounting device effectively achieves the purpose of quickly and accurately mounting an overwater double-limb areca-nut-shaped power transmission tower, the construction speed is increased, the construction quality is improved, the technical economic cost performance is high, and the effect is remarkable.

The utility model discloses a steel structure modularization assembly system of a multi-story building. The steel structure modularization assembly system comprises column modules, beam modules and beam column assembly joint modules. The column module comprises a column body and column end plates arranged at the two ends of the column body, and a plurality of first bolt holes are formed in the column end plates; the beam module comprises a beam body and beam end plates arranged at the two ends of the beam body, and a plurality of second bolt holes are formed in the beam end plates; the beam column assembly joint module comprises a supporting body and joint end plates arranged at the two ends of the supporting body, a plurality of third bolt holes are formed in the joint end plates, the beam column assembly joint module further comprises a plurality of joint side plates, the joint side plates are arranged around the supporting body, and each joint side plate is installed on the edges of the two joint end plates at the same time. The steel structure modularization assembly system has the advantages of being clear in structural stress, good in machining quality, fast in installation, capable of guaranteeing installation quality easily and the like, and is a novel building mode suitable for industrial and civil multi-story buildings.

According to the rectangular-section RC column-U-shaped steel reinforced RC beam connection joint reinforcing structure and method, two pieces of channel steel which are symmetrically arranged are bonded to a bonding anchoring area through building structure glue, notches matched with the U-shaped steel reinforced RC beam in section size are formed in flanges of the channel steel, and the two pieces of channel steel are welded at butt joints to form a sleeve; a plurality of preformed holes are formed in each piece of channel steel, and each preformed hole contains a shoot nail connected with the RC column; the U-shaped steel reinforced RC beam is provided with eight pieces of angle steel, and the U-shaped steel on the U-shaped steel reinforced RC beam is connected with the sleeve in a surrounding welding mode to form a beam-column joint reinforced structure. The sleeve and the beam-column joint are bonded and anchored by smearing the building structural adhesive, the shooting nails are adopted for further anchoring, the overall working performance of the sleeve and the beam-column joint is greatly improved, in addition, the U-shaped steel reinforced RC beam and the sleeve are firmly connected through the angle steel in a surrounding welding mode, a beam-column joint reinforcing system is formed, stress is definite, industrial production is facilitated, and the construction cost is reduced. And the building assembly development requirement is met.

The invention provides a reinforced concrete arch bridge arch rib segment hoisting structure, the left and right webs of the arch rib segment are respectively provided with hoisting holes, the arch rib segment is respectively provided with through slots at the left and right ends of its top plate, a steel plate is movably inserted in the through slot, a limit pin is provided at the top of the steel plate, a through hole is provided at the bottom of the steel plate, a steel rod is movably inserted through the hoisting hole, the steel rod passes through the hoisting hole and the through hole in sequence, a limit device is respectively provided at both ends of the steel rod, and a steel sling for hoisting is installed at the position between the web and the limit device at the outer end of the steel rod. The reinforced concrete arch bridge arch rib segment hoisting structure described in the invention has high safety and reliability, does not need to bury a large number of embedded parts on the arch rib segment, is easy to install and remove, and greatly simplifies the construction process.

The present invention relates to the technical field of bridges, and specifically to a corrugated steel plate profiled steel support system and a construction method; the support system is installed between the webs of the main beams, and the corrugated steel plates and the bridge deck concrete cast on the corrugated steel plates are supported by the support system, and the characteristics are: the support system is composed of a number of transverse square steels and longitudinal square steels installed with each other, the two ends of the transverse square steels are connected between the main beam top plate and the main beam web by connecting plates, the corrugated steel plates are placed on the main beam top plate and the longitudinal square steels, and the bridge deck concrete is cast on the corrugated steel plates. The corrugated steel plate profiled steel support system has the characteristics of simple structure, lightness, reliability, and easy installation. Without greatly increasing the amount of materials and construction measures, it provides effective support for the weaker corrugated steel plates, and ensures the structural performance of the corrugated steel plate composite bridge deck. The system can be widely used in the support structure of various types of corrugated steel plate composite panels.

The present invention provides a large-span folding arc-shaped tide-blocking floating gate structure and a method for using the same. The structure is a double-door type and includes: two gate reservoirs, which are respectively arranged on both sides of a river channel; two gate units that are symmetrical on both sides, and the gate units are divided into upper and lower layers and can be folded and folded in the gate reservoir. Each gate unit includes an upper tide-blocking floating gate, a lower tide-blocking floating gate and an arc-shaped foundation. The radius of the upper tide-blocking floating gate is larger than that of the lower tide-blocking floating gate. One end of the upper tide-blocking floating gate and the lower tide-blocking floating gate are both hinged in the force-bearing pier on the bank side, and are arranged in different positions and concentrically. The arc-shaped foundation extends from the gate reservoir to the center of the river channel. The upper tide-blocking floating gate and the lower tide-blocking floating gate rotate and move from the edge of the gate reservoir to the center of the river channel around their hinge points along the arc-shaped foundation to unfold. During the tide-blocking operation, the arc-shaped foundation, the upper tide-blocking floating gate, the lower tide-blocking floating gate and the force-bearing pier on the bank side are combined to realize the function of blocking the tide.

The utility model relates to the technical field of concrete pump damping, and provides a vertical pump pipe damping device which comprises a rubber damping ring, a spring connecting rod, an arc-shaped clamping plate and a supporting connecting piece. The rubber damping ring is horizontally arranged, the multiple spring connecting rods are distributed on the inner side of the rubber damping ring in the circumferential direction of the rubber damping ring, the center axis of each spring connecting rod points to the center of the rubber damping ring, one end of each spring connecting rod is connected with the rubber damping ring, and the other end of each spring connecting rod is connected with the corresponding arc-shaped clamping plate. A circular channel is defined by the multiple arc-shaped clamping plates and used for allowing a vertical pump pipe to penetrate through. The outer side of the rubber damping ring is connected with a supporting connecting piece which is used for being connected with a wall or a column or a floor hole of a building. The vibration energy of the pump pipe is consumed through the rubber damping ring, the influence caused by vibration in the concrete pumping process can be effectively reduced, and the concrete forming quality and the stability of an inter-floor supporting system are effectively guaranteed.

The invention discloses a multifunctional bridge with drainage and routing functions, a handrail and a mounting method. The handrail at least comprises a handrail assembly. The handrail assembly comprises a plurality of handrail stand column sets. The upper sections of every two adjacent railing post groups are connected through a railing; each railing post group consists of two railing posts which are arranged in parallel; the two railing posts are connected through bolts; the railing post and the railing water baffle are arranged on the outer side of the lower section of the railing assembly; the drainage bin is arranged at the lower end of the handrail assembly in the length direction of the handrail assembly. The multifunctional bridge handrail can achieve centralized drainage of a bridge floor and hiding and storage of bridge pipelines, is easy to install, attractive in appearance and clear in stress, and can be popularized and applied to pedestrian landscape bridge handrails.

The utility model discloses a kind of kart vehicle body telescopic adjusting devices and kart. The device is applied to the kart vehicle body with front vehicle support and rear vehicle support, load bar is equipped on front vehicle support, hollow sleeve rod is equipped on rear vehicle support opposite to load bar, load bar can slide in axial direction to change the distance between front and rear vehicle support. Adjusting component includes shell body fixed on front vehicle support, direction conversion structure arranged in shell body and screw rod cooperated with nut and sleeve, direction conversion structure is made of meshing gear set, for converting hand lever rotation into screw rod autorotation and driving vehicle body telescopic;Between load bar and hollow sleeve rod is sliding fit, end portion is equipped with limit structure, and scale mark is set on load bar and / or hollow sleeve rod. The kart using the device can conveniently adjust wheelbase within a certain range, adapt to drivers of different heights, with simple structure, low cost, safe and reliable adjustment.