77results about How to "Reduce maintenance and repair workload" patented technology

The present invention discloses a cinderless railroad bed and its construction method. Said cinderless railroad bed has the characteristics of high strength, large rigidity, good stability and durability, and includes the following several portions: reinforced concrete supporting piles which are longitudinally spaced and arranged along the railroad bed; reinforced concrete bearing plates which are rigid fixedly connected in the upper end of said reinforced concrete supporting piles; and earth railroad bed which is filled between the reinforced concrete bearing plates and railroad bed foundation. Besides, said invention also provides the concrete steps of its construction method.

The invention discloses a fabricated type reactive powder concrete prefabricated pavement slab without a reinforcing rib and a manufacturing method thereof. A slab body is a material plate made from reactive powder concrete; layers of horizontal steel wire gauzes are respectively spread in the reactive powder concrete material plate and are close to upper and lower surfaces; hoisting embedded parts which run through in the vertical direction are respectively arranged at the four corners, wherein the two ends of the hoisting embedded parts are connected with lifting appliances. When the fabricated type reactive powder concrete prefabricated pavement slab without the reinforcing rib is manufactured, the fluidity of the reactive powder concrete is controlled to avoid deformation of the pavement slab in the later-period manufacturing process, and the fabricated type reactive powder concrete prefabricated pavement slab without the reinforcing rib is maintained naturally indoors to ensure the total quality of the pavement slab. Compared with a common concrete pavement slab, the pavement slab has the advantages of no reinforcing rib in structure, small thickness, portability, light weight, convenience in transportation and installation, high intensity, wear resistance, high bearing capability, good anti-impact performance, good anti-fatigue performance, good weather resistance, and fast and efficient construction, repeated use, and can be widely applied to road construction of temporary building living quarters.

The present invention discloses a lattice pile structure roadbed for ballastless track reinforcing steel concrete and the construction method thereof. The roadbed comprises reinforcing steel concrete piles (20) arranged transversely and vertically along the roadbed, a reinforcing cushion layer (10) laid above the reinforcing steel concrete piles (20), and a soil roadbed (30) filled and constructed above the reinforcing cushion layer (10). The present invention takes full advantage of the common combined action principle of the piles, the net and the soil to meet the requirements of the strength and the settling deformation of the ballastless track, and to overcome the disadvantages that the settlement quantity and the differential settlement quantity of the high road embankment structure is large and the extent of the dynamic influence of the low road embankment structure is large, and the present invention has the advantages of strong bulking property, good stability, being solid and durable, small track deformation, small accumulation deformation, etc., and is favorable to the high-speed driving; the maintenance workload can be greatly reduced, the intensity of the maintenance operation can be lowered, and the maintenance operation condition can be improved. The construction process is simple, the construction cost can be effectively reduced, and the present invention meets the requirement of the environmental protection, therefore, the present invention has wide application prospect.

A combined structure for an abrupt slope road bed of a rapid transit railway is characterized by being strong in integrity, good in stability, firm and durable and favorable for high speed vehicle running. The combined structure comprises reinforced concrete piles (10), L-shaped reinforced concrete structures (20) and road bed filling bodies (30), wherein the reinforced concrete piles (10) are horizontally arranged in two rows along the road bed and longitudinally arranged at intervals along the road bed, the L-shaped reinforced concrete structures (20) extend along the road direction and are arranged on pile tops of the reinforced concrete piles (10) to be fixedly connected with the reinforced concrete piles (10), and the road bed filling bodies (30) are filled on the inner side of the L-shaped reinforced concrete structures (20). The combined structure for the abrupt slope road bed of the rapid transit railway has the advantages of being strong in integrity, good in stability, firm, durable, small in rail deformation and the like, favorable for high speed vehicle running, and capable of greatly reducing maintenance work amount. Construction technology is simple, can effectively reduce building cost, meets environment protection requirements and has wide application and popularization prospects.

The invention relates to a wide sleeper plate sticking type ballast track. After the line foundation of a ballastless track structure of an existing rail transit is deformed, the track repairing work is extremely high in workload, high in time consumption and high in difficulty; a ballast track is easy to repair, but the geometric state of the track is not liable to retain, and the daily maintenance work is high in workload and frequent. The wide sleeper plate sticking type ballast track comprises a railway ballast trough arranged in the line direction and a track structure arranged in the railway ballast, wherein the track structure comprises a macro-molecular material cured railway track, macro-molecular material cured small-granular chicken girt and wide sleeper plates from bottom to top; the macro-molecular material cured railway track is flatly paved at the bottom of the railway track trough; the macro-molecular material cured small-granular chicken girt is located on the macro-molecular material cured railway track; lower grooves are formed in the upper surface of the macro-molecular material cured small-granular chicken girt; the wide sleeper plates are located in the lower grooves. The wide sleeper plate sticking type ballast track has the advantages that the geometric position of the ballast track is liable to retain, the maintenance workload is low in an operation period, and the ballast track can be quickly and conveniently repaired after the foundation is greatly deformed in the space.

The invention relates to an interurban railway simple support T-beam sidewalk combined structure and a combining method. The interurban railway simple support T-beam sidewalk combined structure comprises a pre-embedded piece, a steel cross beam and a cast-in-place concrete plate. The pre-embedded piece is arranged in a prefabricated protection wall of an interurban railway beam, the root of the steel cross beam is fixedly connected with the pre-embedded piece, and the upper surface of the steel cross beam and the upper surface of the prefabricated protection wall are arranged on the same plane. Concrete is poured to the upper surface of the prefabricated protection wall and the upper surface of the steel cross beam to form a cast-in-place concrete wall and a cast-in-place concrete plate which are of an integrated structure. According to the structure, overall bearing capacity is improved, the structural integrity is good, and a steel component and welding materials are made of weathering resistant steel, so that the workload of later maintenance is reduced.

The invention discloses a combined structure for resisting steep slope high-energy rockfall, and aims to realize effective prevention, control and treatment of high-position and large-volume dangerousrocks in complex hard mountainous areas. Resistance units are transversely arranged on an abrupt slope below a rockfall moving track at intervals, and the multiple resistance units are combined to form a high-energy rockfall resistance structure system. Each resisting unit comprises at least two wedge-shaped supporting piles which are arranged at intervals. The lower part of each wedge-shaped supporting pile is anchored into a stable rock-soil layer below the slope surface of the abrupt slope; a diagonal plane is arranged on the side, close to the mountain, of the upper portion of an exposedslope, long-range recoverable energy absorption devices are arranged on the diagonal plane at intervals, a rigid bearing plate is arranged between wedge-shaped supporting piles on the two sides, the rigid bearing plate is fixedly connected with the long-range recoverable energy absorption devices behind a plate body, and an elastic buffer body is fixedly arranged on the front plate face of the rigid bearing plate.

The invention provides an elastic prefabricated assembly plate type ballasted track which comprises a track panel structure including a rail and a buckle, a prefabricated elastic assembly type track plate formed by assembling frame plates on the periphery, a cover plate in the middle and an elastic cushion layer; a ballasted track bed structure layer; wherein the elastic cushion layer is arrangedon the ballasted track bed structure layer, the frame plate defines a closed space on the elastic cushion layer, the cover plate is arranged in the closed space, and the steel rail is fixed on the frame plate through a fastener. The track structure combines the advantages of a ballasted track and a ballastless track, has good elasticity and good stability, can adapt to large deformation of a lowerfoundation, can keep the geometric state of the track structure for a long time, can greatly reduce the maintenance workload, and can be conveniently and quickly repaired after the lower foundation deforms.

The invention discloses a turnout rapid construction apparatus and method during existing station transformation, and relates to the technical field of existing station turnout construction. The apparatus mainly comprises a pre-paving platform, a lifting device, a walking device and a traction device. The construction method mainly comprises the following steps: the pre-paving platform is erected,a turnout is pre-paved, debugged and accepted on the platform, and the lifting device, the walking device and a traction device are installed; a construction area is blocked, the train operation is stopped, and the construction time is determined; the turnout is transversely moved to cross a rail; the turnout is longitudinally moved to the outer side of a turnout laying position; an existing lineat the laying position is removed from the point; the turnout is placed in place through transverse movement, and the walking device is dismantled; the elevation and direction of the turnout are adjusted; the turnout is finely adjusted; and electric service debugging and work acceptance are carried out, and a blocking line is opened after qualification. Various advanced processes of turnout pointconstruction are integrated, specialized organization is facilitated, and use is convenient.

The present invention relates to sleeper, and is especially one kind of clad elastic sleeper. The clad elastic sleeper includes concrete sleeper and elastic cladding material in the bottom and side faces and/or end faces. Cladding the concrete sleeper with elastic cladding material can raise the elasticity of track, lower the global rigidity one the track, reduce the mutual action between wheel and track, raise the comfort and safety of train and reduce the impact of train to the track.

The invention discloses a cooling tower shared by multiple systems of an electric locomotive. The cooling tower comprises three cooling systems, namely a traction transformer cooling system, a traction current transformer cooling system and a train power supply cabinet cooling system, and specifically comprises a top air feeding box, a middle box body, two-column axial flow fan, an air filtering device, a three-runner double-flow-path heat dissipater, a bottom bearing framework, a water pump, an expansion water tank, a water pipeline, an auxiliary oil tank, an oil pipeline, an electric connector and a gas relay. By the adoption of an integrated complementary design method, the traction transformer, the traction current transformer and the train power supply cabinet cooling system are integrated in the same cooling tower; on the premise of simultaneously meeting the requirement on the heat dissipation of the traction transformer, the traction current transformer and the train power supply cabinet, the cooling tower disclosed by the invention has the advantages of compact structure, high heat dissipation performance, light weight, small volume, low auxiliary power consumption, low noise, convenient use and maintenance, high reliability and the like.

The invention discloses a longitudinal elastic constraint multifunctional seismic mitigation and isolation support. The support comprises a lower seat plate; a middle seat plate which is in sliding connection with the lower seat plate and is provided with a first cambered surface; a rotating piece which is located on the middle seat plate and provided with a second cambered surface, wherein the second cambered surface makes contact with the first cambered surface; a first limiting device which is installed on the rotating part and abuts against the middle seat plate to limit the first cambered surface to slide relative to the second cambered surface, wherein the connecting strength of the first limiting device and the rotating part is smaller than a preset threshold value; second limiting devices which are installed on the lower seat plate and located on the two sides of the middle seat plate in the longitudinal bridge direction respectively to limit the sliding distance of the middle seat plate in the longitudinal bridge direction; and a restraining device which comprises a connecting assembly and an elastic piece, wherein the connecting assembly is connected with the lower seat plate and the elastic piece. The support has the longitudinal adjustable limiting function and longitudinal elastic constraint, the anti-seismic property is improved, a telescopic adjuster can be omitted for a large-span bridge, the maintenance workload is reduced, and the construction cost and the operation cost can be saved.

The invention discloses steel rail nondestructive reinforcing equipment which comprises an elastic clamp, a clamping plate and high-strength adhesives, wherein the elastic clamp is formed by being bent integrally. Geometrical shapes of the inner side, the upper side and the lower side of the clamping plate are matched with those of the middle part, the lower jaw and the rail bottom top surface of a steel rail respectively, the clamping plate adheres to the steel rail through the high-strength adhesives to form a whole, and the clamping plate is firmly locked on the steel rail through the elastic clamp. The steel rail nondestructive reinforcing equipment has the advantages that additional damage of drilling to the steel rail is avoided, reinforcement of the steel rail and a damaged steel rail at a weld joint is achieved under the undamaged condition, dynamic stress and bending stress of the steel rail are effectively reduced, and crack propagation and fracture of the steel rail and the damaged steel rail at the weld joint are prevented; clamping force is constant, the structure is simple, installation is convenient to carry out, and later maintenance loads are small; weld joints can be avoided; installation is free from the height restriction of a steel rail bottom surface ballast bed and the surface of a rail board, and the equipment can adapt to ballast tracks and various types of ballastless tracks; the equipment can be applied to nondestructive reinforcement of rail transit project intervals such as high speed railways, general speed railways, heavy haul railways and urban rail transit and steel rails in forked areas.

The invention provides a tramcar turnout switch structure which is mainly composed of a manganese steel base, a straight stock rail and a curved switch rail, the straight stock rail and the curved switch rail are fixed in the manganese steel base, and the manganese steel base comprises a first connection section located at the head, a second connection section located at the tail and a base section located between the first connection section and the second connection section. The base is integrally cast by high manganese steel, so that the process production period is short, the processing amount is small, and the production cost is greatly reduced. Due to the fact that the base is integrally cast, after the straight stock rail and the curved switch rail are assembled, the overall stability of the structure is good, and the assembling precision is higher. The straight stock rail and the curved point rail can be made of alloy steel plates, the hardness of the straight stock rail and the curved point rail is generally 380 HBW or above, the requirement of the user for wear resistance can be well met, and the maintenance workload is reduced.

The invention relates to a high-speed rail bridge wind shielding structure vertical column. The existing ordinary-speed rail bridge wind shielding measures cannot satisfy a windproof requirement of a high-speed rail bridge in a strong wind area. The high-speed rail bridge wind shielding structure vertical column comprise a straight-section vertical column and a bending-section vertical column which are vertically fixed by splicing; the straight-section vertical column and the bending-section vertical column are provided with bolt holes which are used for fixing wind shielding plates; the upper portion of the bending-section vertical column is vertical and the lower portion bends towards a central line of a beam body; the upper portion vertical portion of the bending-section vertical column is fixed at a flange of the beam body and the bottom end is fixed on a box beam web; a vertical column splicing seam of the straight-section vertical column and the bending-section vertical column is arranged above a bridge surface; the external side is provided with a vertical column splicing plate; a vertical column connecting bolt is arranged on the vertical column splicing plate to enable the straight-section vertical column and the bending-section vertical column to be vertically connected with fixed. According to the high-speed rail bridge wind shielding structure vertical column, the cross wind function acting on a train body is changed through a wind shielding structure under the premise that the safety of the bridge structure and the wind shielding structure is satisfied, the critical wind speed of the train safe operation is improved, the train operation stability is increased, and the operation fault is reduced.