2352 results about "Expansion joint" patented technology

The invention discloses a portal type integrated operation workstation capable of adapting to different underground cavern sections. The portal type integrated operation workstation comprises a frame supporting system, an intelligent control room, a moving walking system, an electrical system and a functional arm system. The frame supporting system comprises first longitudinal beams which are arranged in a left-right spaced mode, and a plurality of transverse telescopic joints are installed between the left first longitudinal beam and the right first longitudinal beam. A plurality of longitudinal shrinkage joints are mounted at the lower end of each first longitudinal beam, the lower ends of the longitudinal shrinkage joints are connected with a high-strength supporting frame, and a movable walking system is mounted at the bottom of the high-strength supporting frame; the functional arm system comprises a concrete spraying-arch mounting arm, an anchor rod mounting arm and a drilling arm which are arranged in a layered mode from top to bottom. According to the portal type integrated operation workstation capable of adapting to different underground cavern sections, the functions of drilling, anchor rod construction, grouting, net hanging, arch frame installation, spraying and mixing and the like are integrated, and meanwhile the size of equipment can be freely adjusted so that the portal type integrated operation workstation can adapt to the extra-large sections of different sizes.

The invention discloses a highway bridge expansion joint compression test device, and belongs to the field of expansion joint test devices.The highway bridge expansion joint compression test device comprises a test bed, two sliding rails are symmetrically fixed to the top of the test bed, two limiting mechanisms symmetrically slide on the sliding rails, and an L-shaped supporting seat is fixed to the middle of the back face of the test bed; a hydraulic cylinder is installed in the middle of the top of the L-shaped supporting seat, the output end of the hydraulic cylinder extends to the position over the test bed and is fixedly provided with a pressure testing mechanism, the pressure testing mechanism comprises a fixing plate, the fixing plate is fixedly connected with the output end of the hydraulic cylinder, and three sets of hollow-square-shaped pressing frames are fixed to the bottom face of the fixing plate at equal intervals; the connecting plates are arranged between the two adjacent hollow-square-shaped pressing frames; the fixed frame is fixedly connected to one end of the bottom of the connecting plate. According to the invention, under the stable pressure, the condition that the vehicle performs rolling test on the expansion joint under different conditions is simulated, so that the accuracy of testing the compression resistance of the expansion joint is improved.

An expansion joint bridging device in the form of a plate-type roadway joint which bridges an expansion joint between two building components. The expansion joint is spanned by crossbeams which are braced in a load-bearing relationship on both building components. Supported on the crossbeams is at least one plate disposed above the crossbeams, the plate having two plate portions which lie flush with one another and are interconnected in a force-transmitting relationship. The plate portions are connected in situ by means of at least one cover plate which bridges the joint between the plate portions and connects the two plate portions in a force-transmitting relationship. At least one of the connections between the cover plate and the plate portions is hinged, having a rotational degree of freedom about an axis extending horizontally transversely to the orientation of the relevant plate.

The invention relates to the technical field of cable bridges, and discloses a cable bridge with expansion joints, which comprises two cable bridge main bodies, expansion joint main bodies are slidably connected to the outer walls of the two cable bridge main bodies, and three air pressure sleeves are fixedly connected to the tops of the expansion joint main bodies. First air pressure cavities are formed in the inner walls of the three air pressure sleeves correspondingly, air in the first air pressure cavities and the second air pressure cavities is extruded by the extrusion assembly under the influence of the weight of the cable, so that air at the top and the bottom of a piston rod is in a high-pressure state, and when the cable at the main body part of the expansion joint vibrates, generated vibration is transmitted to a supporting plate; by means of compressibility of high-pressure gas on the two sides of the piston rod, vibration generated by the cable is absorbed, the vibration amplitude of the cable is reduced, and the situation that flexible connection between the expansion joint body and the cable bridge body easily causes increase of the vibration amplitude of the cable at the position, large pulling force is applied to the cable at the position, and the cable is easily damaged is effectively prevented.

Disclosed in the present invention are a method and system for determining reasonable vertical stiffness of a long-span new highway bridge. The method comprises: by means of a finite element model for an initial design scheme of a long-span new highway bridge, calculating a vertical deflection-to-span ratio and a beam end vertical rotation angle of the bridge under the characteristic combination of a permanent load, a live load, a temperature action, and a wind load; performing checking calculation on indicators for driving safety and comfort on the bridge, indicators for the usage of a beam end bearing and an expansion joint, and indicators for a vertical curve of a route after vertical deformation of a main girder; taking the requirements for the driving safety and comfort on the bridge, the requirements for the usage of the beam end bearing and the expansion joint, and the requirements for the vertical curve of the route after the vertical deformation of the main girder as constraints to decrease or increase bridge design parameters in the finite element model; and determining, as the minimum value of the reasonable vertical stiffness of the bridge, the maximum vertical deflection-to-span ratio and the maximum beam end vertical rotation angle in all schemes satisfying the constraints. The present invention can provide a reliable reference for the reasonable design, economy, and safety of long-span new highway bridges.

The invention discloses a municipal bridge expansion joint detection mechanism, and belongs to the technical field of expansion joint laser detection.The municipal bridge expansion joint detection mechanism comprises a main case and heat dissipation holes formed in the corners of the main case, guide columns are fixed to the side edges of the main case, and side width check blocks are arranged on the sides of the guide columns; a reference rod fixed to the side width check block is inserted into a guide column, a laser range finder is installed in the guide column, the laser range finder detects movement of the end of the reference rod through optics, and the middle of the side width check block is connected with a movable wheel through a rotating shaft. A first cleaning assembly and a second cleaning assembly are installed on the front side and the rear side of the movable wheel correspondingly. According to the municipal bridge expansion joint detection mechanism, through the arrangement of the laser range finder, the width of an expansion joint can be accurately measured conveniently, meanwhile, fixed-point or whole-line width measurement can be conveniently conducted on the expansion joint, and silt attached to the side wall of the expansion joint can be conveniently cleaned in the measurement process.

The invention relates to the field of curtain walls, in particular to an innovative curtain wall with an expansion joint, through the arrangement of the expansion joint, the function requirement for expansion of building materials is met, and through the arrangement of a connecting assembly, a first stand column, a second stand column, a first expansion piece, a second expansion piece, a third expansion piece and a panel, the expansion joint is hidden on the rear side of the panel; uniformity of vertical faces of the curtain wall is guaranteed, the effect and quality of the curtain wall are improved, and the problems of heat preservation, heat insulation and expansion joint water leakage of an existing curtain wall are solved. By arranging the connecting assembly, the first stand column and the second stand column, the curtain wall structure is more stable. The problems that a curtain wall expansion joint is arranged on an outer vertical face, waterproof is difficult, and attractiveness, heat insulation and waterproof performance of a curtain wall are damaged are solved.

The invention discloses a bridge deck system multi-sub-project integrated construction process optimization method. The method comprises the following steps: step 1, optimizing a process based on a BIM (Building Information Modeling); step 2, carrying out combined measurement by adopting GNSS-RTK and laser scanning; 3, bridge deck pavement construction and expansion joint installation are conducted on the basis of the combined measurement result; 4, the paver is linked with the reserved groove for positioning, the flatness error can be effectively controlled, and the bridge deck pavement quality is guaranteed; 5, guardrail modular construction is carried out; sixthly, seamless connection, layered backfilling and dynamic compaction are conducted on the butt strap behind the abutment; 7, whole-process environmental protection and finished product protection; 8, performing three-dimensional scanning comparison; step 9, block chain data archiving; the method has the beneficial effects that construction simulation, sequence adjustment and dynamic monitoring are carried out based on the model optimization process logic, the problems of process crossing and construction period conflict can be recognized and eliminated by simulating the construction process in advance, accurate positioning of each subentry project is ensured, and the overall coordination of construction is improved.

The invention provides a construction method of a CRTS III type slab ballastless track, and relates to the technical field of high-speed rail construction, and the construction method comprises the following steps: mounting base plate steel bars, side forms, end templates and limiting groove templates, placing foam plates at expansion joints, and reserving track slab pressing and anchoring holes; base plate concrete is poured, and base plate concrete formwork removal, surface finishing, maintenance and expansion joint construction are carried out after pouring; constructing a geotextile isolation layer and an elastic cushion layer; limiting groove steel bars and self-compacting concrete layer steel bar meshes are installed, and track plates are placed; before and after the track plate and the base plate are fastened by the pressing device, the track plate is finely adjusted by the fine adjustment device; and a self-compacting concrete formwork is installed, self-compacting concrete is poured, and post-pouring treatment and curing are conducted. The track plate and the base plate are fastened through the pressing device, so that the track plate, the base plate and the self-compacting concrete layer are tightly attached in the self-compacting concrete pouring period, and the situation that reworking or track laying is difficult due to the fact that the floating amount of the track plate is too large is avoided.

The present application relates to a kind of plate type ballastless track bed expansion joint glue injection and leveling integrated system, including control system, glue pipeline system, mobile platform, glue injection execution system, wherein glue pipeline system is applied to the pressure of glue body storage tank, force glue liquid to be transported along pipeline to the end of glue injection execution system, glue injection execution system is by six-axis mechanical arm control unit according to expansion joint space coordinate planning six-axis mechanical arm path information and forms six-axis mechanical arm action instruction, realizes six-axis mechanical arm end injection head to expansion joint and carries out glue injection operation.The present application is by setting glue injection execution system and glue pipeline system on mobile platform, can guarantee according to the length direction of expansion joint and carry out glue injection and according to stable glue injection quantity realize the glue injection of expansion joint, reduce labor intensity, improve the glue injection quality of expansion joint.

The utility model discloses a steel structure gap rust-proof spraying structure which comprises a steel structure expansion joint, a rectangular frame is arranged at the top of the steel structure expansion joint, an adjusting piece is connected to the bottom of the rectangular frame in a bolted mode, the bottom of the adjusting piece and the steel structure expansion joint are magnetically attracted, and a mounting frame is connected to the interior of the rectangular frame in a sliding mode. A spraying part is arranged at the bottom of the mounting frame; the spraying part comprises a lead screw, the lead screw is rotatably connected to the interior of the mounting frame, the surface of the lead screw is in threaded connection with a screw block, the bottom of the screw block is bolted with a connecting rod, the bottom of the connecting rod is bolted with a spraying gun structure, and the bottom of the spraying gun structure communicates with a spraying pipe; the problems that according to an existing conventional mode for steel structure expansion joint rust-proof treatment, rust-proof paint is usually painted for workers, but the method has the problems that painting is not uniform, omission is prone to occurring, and the working efficiency is low are solved.

The invention relates to the technical field of building materials, and particularly discloses a bridge expansion joint cement-based repairing mortar material and a preparation process thereof. The invention discloses a cement-based repair mortar material for bridge expansion joints. The cement-based repair mortar material is prepared from the following raw materials in parts by weight: 20-30 parts of Portland cement, 1-5 parts of benzoxazine resin, 30-40 parts of sandstone, 0.5-2 parts of nano silicon dioxide, 0.5-2 parts of a water reducing agent, 1-3 parts of hydrated calcium silicate, 15-25 parts of water and 10-15 parts of modified polyurethane, the preparation method comprises the following steps: dispersing the nano silicon dioxide in water, carrying out ultrasonic treatment, uniformly stirring to form a stable suspension, respectively adding the hydrated calcium silicate and the modified polyurethane, uniformly stirring, sequentially adding the Portland cement, the benzoxazine resin and the gravel, and stirring and mixing until the slurry is uniform to obtain the repair mortar material. The composition can be used for repairing bridge expansion joints, and has the advantages of good durability, high compressive strength and the like.

The utility model discloses a double-column formwork device at an expansion joint, and belongs to the technical field of building construction, the double-column formwork device at the expansion joint comprises a plurality of column formworks, a concrete pouring cavity is defined by the plurality of column formworks, limiting assemblies are arranged on the outer walls of the column formworks in a surrounding mode, and the limiting assemblies are used for hooping and limiting the column formworks; the extruded sheet is inserted in the middle of the concrete pouring cavity and is used for dividing the concrete pouring cavity into two column pouring cavities; the number of the reinforcing formworks is two, the two reinforcing formworks are arranged on the two opposite sides of the extruded sheet, the second locking pieces are arranged on the two opposite column formworks in a penetrating mode, and the second locking pieces are used for abutting against the reinforcing formworks and extruding the reinforcing formworks to be tightly attached to the extruded sheet. The concrete pouring cavity is divided into the two column pouring cavities through the extruded plate, meanwhile, the extruded plate is reinforced and fixed by matching the reinforcing formwork with the second locking piece, deformation of the extruded plate is greatly reduced, construction is convenient, the formwork dismounting workload is small, and the formwork mounting speed is high.

The invention relates to the technical field of generator exhaust, and discloses a generator outlet exhaust pipe structure which comprises a connector and a vertical exhaust pipe, the bottom end of the connector is directly connected with the air outlet end of a generator, and the connector and the vertical exhaust pipe are connected through a metal bellow expansion joint. A vibration reduction component is arranged on the outer wall of the vertical exhaust pipe, and a temperature control component is arranged in the vertical exhaust pipe; the vibration reduction component comprises a fixed frame and a sliding frame, the fixed frame is connected with a wall and other fixed structures, thick springs and thin springs are used for forming a composite vibration reduction spring structure, and when the vertical exhaust pipe is subjected to low-frequency vibration, the displacement of the exhaust pipe is small, and at the moment, only the thin springs deform; when the vibration frequency rises and the displacement amount is too large, the thick spring starts to be connected with the thin spring in parallel for bearing, the variable stiffness characteristic is formed, the good vibration reduction effect is achieved, and meanwhile the damper works to absorb kinetic energy of vibration.

The utility model relates to an FEBD seamless bridge deck connecting plate adopting a T-shaped shear nail structure, which comprises a semi-continuous UHPC bridge deck connecting plate arranged on the upper side of a telescopic gap at a beam end in a crossing manner, and a polyurethane pavement layer used for bearing vehicle load is paved on the upper side of the semi-continuous UHPC bridge deck connecting plate. T-shaped shear nails are arranged between the polyurethane pavement layer and the semi-continuous UHPC bridge floor connecting plate. According to the connecting plate, the seamless bridge floor can be realized, and the diseases such as pavement layer disengagement and hemming caused by large deformation difference when wheels pass through the expansion joint are obviously relieved; and in addition, the complex space stress state of the bridge deck can be better adapted, the normal use requirement of the bridge deck continuous structure is met, the construction period is effectively shortened, and the influence on traffic is small.

The present invention provides a spiral sleeve heat exchanger, which relates to the technical field of heat exchangers and includes an outer tube, an inner tube, a positioning tube, an arc-shaped side plate, and a heat insulation assembly. The inner tube is located inside the outer tube, and the inner tube and the outer tube form a sleeve heat exchanger structure. One end of the positioning tube penetrates through the outer tube and is fixedly welded to the outer wall of the inner tube, and the positioning tube is fixedly welded to the outer tube. In the present invention, by adopting spiral inner and outer tubes, when the metal temperature difference between the inner and outer coils is large, the inner and outer coils will produce deformations of different sizes. Since there is a large gap between the inner and outer coils, their deformations will not be restricted by each other; and the spiral coil has greater elasticity than a straight tube, which can eliminate most of the temperature difference stress, avoid the use of expansion joints, and thus reduce costs and leakage risks.

The invention discloses an underground powerhouse composite aluminum plate modular construction system and method, belongs to the technical field of underground building decoration, and solves the problems that in traditional underground powerhouse decoration, aluminum plates crack due to rock wall deformation, and the construction precision is difficult to guarantee. According to the technical scheme, the modular composite aluminum plate unit is composed of a light keel frame, a filling layer and a decorative aluminum plate layer, and an independent supporting structure is formed through rigid connection of an integral keel net and a generator layer concrete constructional column; the flexible telescopic device is arranged in a gap between the keel net and the rock wall in an embedded mode. And the digital dynamic control module monitors flatness and deformation data in real time through a laser range finder and a vibration sensor, and automatically adjusts the displacement of the inclined long hole of the connecting corner brace and the pre-tightening force of the expansion bolt by using an intelligent feedback actuator. The system is mainly used for high-precision modular decoration construction of an underground powerhouse generator layer, and can effectively adapt to rock wall deformation and ensure that the construction quality is stable and reliable.

The invention relates to the technical field of building drainage, and particularly discloses a soft soil foundation outdoor drainage system and a construction method thereof.The drainage system comprises a first drainage pipe, a second drainage pipe and a third drainage pipe, and an outlet of the first drainage pipe is configured to penetrate through a foundation beam or a basement outer wall outwards to be arranged in a soft soil foundation; an inlet of the rubber joint is communicated with an outlet of the first drainage pipe; an inlet of the expansion joint is communicated with an outlet of the rubber joint; an inlet of the second drainage pipe is communicated with an outlet of the expansion joint; and the inspection well is arranged in the soft soil foundation, and the inspection well is communicated with an outlet of the second drainage pipe. According to the soft soil foundation outdoor drainage system and the construction method thereof, the problem that an outdoor plastic drainage pipeline is broken due to differential settlement is solved, and the connection requirements of municipal drainage pipe networks with different burial depths are met.

The utility model relates to the technical field of expansion joints, in particular to a deformed steel-elastic body combined seamless expansion joint structure and a bridge, the expansion joint structure increases the coupling action area and the coupling force of an elastic body and deformed steel through the combined structural design of a deformed plate, the deformed steel, the elastic body and a covering layer, so that the expansion joint structure is more flexible and reliable. The phenomenon that weak connecting surfaces are easy to debond too early is improved, the service life of the structure is prolonged, and the durability of the structure is improved; the deformation direction of the elastic body is controllable, the road surface is prevented from bulging, and the driving safety problems such as bumping are completely eradicated; the covering layer in the expansion joint area can cooperate with the elastic material for tension and compression deformation, meanwhile, it is guaranteed that the rigidity transition from the asphalt concrete layer in the non-expansion area to the covering layer is smooth, and the vicious circle that the bumping phenomenon is caused by the unsmooth road surface, and the local damage of the road surface is more serious due to the impact load under the bumping phenomenon is prevented.

The utility model relates to a bridge expansion joint displacement monitoring device along the bridge direction, which comprises a support frame, the support frame is provided with an elastic support member used for being installed in an expansion joint, and two elastic surfaces of the elastic support member respectively abut against two side walls of the expansion joint; the supporting frame is further provided with a fixing shell and a pointer, the pointer is movably installed on the outer wall of the shell, and a linkage assembly is connected between the pointer and the elastic supporting piece. The linkage assembly can move when the distance between the two elastic faces of the elastic supporting piece is increased or decreased, so that the position of the pointer on the shell is driven to change through the displacement of the linkage assembly, and a worker can visually observe the change of the bridge expansion joint structure by observing the movement change of the pointer.

An underground roadway waterproof supporting construction method comprises the following steps that anchor rods are constructed on the surface of a to-be-supported roadway after drainage, and a first reinforcing mesh and a second reinforcing mesh are installed on the constructed anchor rods; reinforcing ribs are arranged on the first reinforcing mesh at intervals; the second reinforcing mesh comprises a layer of reinforcing mesh sheet and a layer of mining flame-retardant plastic mesh, and the mining flame-retardant plastic mesh is located between the first reinforcing mesh and the reinforcing mesh sheet; a first material is sprayed on the surface of the second reinforcing mesh to construct a supporting layer, grouting holes are reserved in the supporting layer, and the supporting layer is used for providing high-strength waterproof anti-seepage support for the roadway; after the supporting layer is finally set, grouting of a second material is conducted between the supporting layer and the surface of the roadway to be supported through the grouting holes so as to construct a buffer layer, and the buffer layer is used for providing buffer for deformation and movement of the roadway; a gap between every two adjacent supporting layers serves as an expansion joint, and a back-attached type waterproof structure and / or a middle-buried type water bag waterproof structure are / is constructed at the expansion joints.

A sun umbrella locking device includes: a sliding base, a locking clamping base and a fastening assembly, wherein a sliding chamber is formed in the locking clamping base, and two locking pieces are arranged on side surfaces of the locking clamping base; an expansion joint is formed between the two locking pieces, and the expansion joint extends into the sliding chamber of the locking clamping base; the two locking pieces are respectively provided with a first locking hole, the sliding base is provided with an accommodating chamber, and the locking clamping base is arranged in the accommodating chamber; the sliding base is provided with a second locking hole aligned with the first locking hole; after passing through the second locking hole and the first locking hole, the fastening assembly is connected to the sliding base and the locking clamping base.

An assembly type rotatable bridgehead steel transition slab under surface mine heavy traffic comprises H-shaped steel longitudinal beams, transverse partition plates, anti-sliding steel panels, connecting pin shafts, TST elastic plastic bodies, sleeper beams, expansion joint steel plates, steel bridge steel box girders and steel bridge abutment cover beams. The H-shaped steel longitudinal beams are arranged at equal intervals in the transverse bridge direction, the transverse partition plates are arranged in the longitudinal bridge direction, and the anti-sliding steel panel is arranged on the H-shaped steel and connected with the H-shaped steel and the transverse partition plates into a whole. The rotating steel plate is used for connecting the main beam web and the H-shaped steel web of the butt strap, and the rotating pin shaft penetrates through the lug plate to connect the main beam and the butt strap into a whole to achieve the rotating purpose. The TST elastic-plastic body is arranged on a bridge abutment cover beam and below an H-shaped steel longitudinal beam. And the expansion joint steel plate is arranged on the bridge head expansion joint. And the sleeper beam is arranged at the tail part of the steel butt strap. The device can be disassembled, assembled and reused according to the displacement of the steel bridge, and the steel transition slab can rotate, so that the bridgehead roadbed is allowed to generate certain settlement. And when the settlement is too large, backfilling and filling treatment can be carried out.

A telescopic joint suitable for a novel magnetic levitation track comprises main crown rails, auxiliary crown rails and an equipartition connecting rod mechanism, the main crown rails are fixed below flange plates on the two sides of a T-shaped track beam joint, and the auxiliary crown rails are arranged between the main crown rails; a transverse slide way and two longitudinal slide ways are arranged in the middle of the top face of the auxiliary crown rail, and the two longitudinal slide ways are symmetrically distributed on the two sides of the transverse slide way. The equally-divided connecting rod mechanism is a four-connecting-rod mechanism and is arranged on the top of the auxiliary crown rail, hinge points of the four-connecting-rod mechanism are correspondingly connected with the sliding ways in a sliding mode, and the two ends of the four-connecting-rod mechanism are hinged to the top of the front main crown rail and the top of the rear main crown rail respectively. When the main crown rail stretches and retracts along with the T-shaped rail beam, the auxiliary crown rail is driven to move through the equipartition connecting rod mechanism, and gaps between the front end and the rear end of the auxiliary crown rail and the main crown rail are always kept equal. Interference with an electromagnetic module below the bogie of the maglev train can be avoided, and it can be guaranteed that front and rear telescopic gaps of the connector are equal.

The invention discloses an expansion joint deformation monitoring and data analysis method based on GIL multi-dimensional perception, and relates to the technical field of electric power operation and maintaining.The expansion joint deformation monitoring and data analysis method comprises the steps that the time point of deformation of an expansion joint in a certain feature record is collected, environment parameters of the time point are obtained, and the environment score of the time point is determined; environment scores in all the feature records are counted, the environment scores are graded, and feature environment grades are determined; deformation parameters corresponding to the feature time points are extracted, and feature parameters are determined; setting a training period, calculating an environment score at any time point, and calculating an operation score in a high-risk time period; establishing a predictive analysis time interval formula; the method comprises the following steps: acquiring real-time environment parameters, determining a real-time environment grade, calculating a real-time operation score of a high-risk time period, inputting the real-time operation score into a prediction analysis time interval formula, judging an analysis state, and improving the operation efficiency of a power transmission system.

The invention provides ultrahigh-temperature fatigue test equipment for a large-size expansion joint. The ultrahigh-temperature fatigue test equipment comprises a loading system, a heating system, a cooling system and a pressurizing system, the loading system is composed of an execution mechanism, a guide mechanism, a load platform and a high-temperature pull rod assembly, and is used for applying a stable dynamic axial load; the heating system comprises a heating base plate, a low-temperature heating chamber provided with a transverse opening and closing mechanism and a high-temperature heating chamber provided with a vertical lifting mechanism, and rapid crossing of a material sensitization temperature area is achieved. The cooling system comprises a circulating water-cooling plate integrated on the heating chassis, a double-end water-cooling flange and a forced water-cooling jacket sleeved at the bottom of the high-temperature pull rod, and is used for blocking a heat conduction path; the pressurization system provides a protective atmosphere with the pressure fluctuation smaller than or equal to + / -10% through the gas circuit device. The equipment is suitable for testing the fatigue performance of the large-size expansion joint in an ultrahigh-temperature environment of 1000 DEG C, and meets the reliability evaluation requirements of materials such as nickel-based alloy and stainless steel.

The present invention belongs to the technical field of hydraulic machinery, and particularly relates to a canal forming machine, which includes a forming machine body and a forming die arranged on its surface. An integrated leveling and cutting assembly is arranged on the outer surface of the forming die. The integrated leveling and cutting assembly at least includes a conveyor belt, a plurality of rolling rollers, a plurality of leveling shells, and a plurality of guide wheels. The plurality of guide wheels are arranged at intervals around the edge of the forming die. A conveyor belt is commonly connected to the outside of the plurality of guide wheels. The plurality of rolling rollers and the leveling shells are arranged at intervals on the surface of the conveyor belt. One end of the rolling roller close to the forming die is connected with a driven gear. At least two arc-shaped movable blocks are rotatably connected to the end of the rolling roller far away from the forming die. By adopting the technical scheme of the present invention, the problems that the surface of the canal formed by the existing canal forming machine is uneven and not smooth, and an additional device is needed to make expansion joints, and the formed quality of the made expansion joints is poor, time-consuming and laborious can be solved.

A bridge expansion joint sealing device with a cleaning function relates to the technical field of expansion joints and is mounted between two adjacent I-shaped middle beams of a bridge expansion joint. The device comprises two sealing strips which are connected with a middle beam through clamping grooves, and arc-shaped shielding parts are arranged on the opposite sides of the sealing strips; the two elastic telescopic supporting assemblies are mounted at the two ends of the sealing strip; the split sealing assembly is mounted below the elastic telescopic supporting assembly, closes the gap when closed and dumps garbage when opened; the flexible tray is used for bearing garbage and can be rolled and drawn out during cleaning; double sealing is achieved through the arc-shaped shielding part and the split sealing assembly, and rainwater and sundries are effectively blocked; the elastic telescopic supporting assembly adapts to bridge displacement changes, and the sealing effect is ensured; the batten design enhances the structural strength and prolongs the service life; the device is simple in structure, the waterproof performance is remarkably improved, and the device is suitable for sealing and cleaning bridge expansion joints.

The invention relates to the technical field of intelligent sensing of bridges, in particular to an energy collection device arranged in a bridge expansion joint, a design method and a bridge expansion joint monitoring mechanism, and the device comprises a conversion unit which is arranged in a bridge expansion joint structure, captures the strain of the structure after the structure is stressed, and generates an alternating flexural electric signal; the substrate layer is positioned between the conversion unit and the bridge expansion joint and is used for adjusting the strain distribution of the conversion unit; the rectification unit is integrated with an impedance matching circuit, is connected with the conversion unit, converts the alternating deflection electric signal into direct current, and transmits the direct current to the energy storage unit; compared with the prior art, the monitoring mechanism for the bridge expansion joint has the advantages that a self-energy-supply structure based on the flexoelectric effect is arranged in the device, an external power source is not needed, the wiring and maintenance cost is remarkably reduced, meanwhile, millimeter-level displacement distinguishing and real-time structure health assessment are achieved through the monitoring unit, and the monitoring accuracy is improved. And the structural safety of the bridge expansion joint is ensured.