32results about How to "Reduce derailment" patented technology

The invention relates to an assembled tie for shield construction and a construction method thereof, belonging to the technical field of tie pavement in shield construction. The assembled tie is formed by splicing two trolley ties and a slag car tie; the baseplate of the assembled tie is cambered; and the existing joist steel ties are replaced by a cambered right-angled triangle plate and a trapezoidal plate. The assembled tie has the advantage of light weight and the like, is easy to stack, and can protect shielded duct pieces. In the construction process, the trolley ties at the back of the trolleys, which are not used any more, are continuously disassembled, thus improving the use ratio of construction members and effectively reducing the construction cost. The assembled tie and the construction method thereof can be widely applied to installing mechanical ties in the process of the shield construction.

The invention relates to a transportation tool, and discloses a derailment-preventing train connection device. The derailment-preventing train connection device comprises a pair of sleeper rods distributed from front to back, and a pair of connecting oil cylinders distributed from left to right, wherein the sleeper rods are connected together just through the connecting oil cylinders. The connecting oil cylinders comprise cylinder bodies, pistons located in the cylinder bodies and connecting rods connected with the pistons. The cylinder bodies and the connecting rods are respectively and movably connected with one of the sleeper rods. The pistons divide the cylinder bodies into front oil cavities and rear oil cavities, the front oil cavities of the connecting oil cylinders are communicated through a front oil pipe, and the rear oil cavities of the connecting oil cylinders are communicated through a rear oil pipe. The left-right traction force of the derailment-preventing train connection device can be automatically adjusted to be balanced, and the problem that due to the fact that the left-right traction force of an existing train connection device can not keep balanced automatically, the existing train connection device shakes seriously and even derails in the turning process is solved.

The invention discloses a seismic monitoring and alarming system used for the rail transit and belongs to the seismic protection and control systems. The system comprises a seismic monitoring site, a linkage control center and a monitoring center. At least one monitoring space is arranged in the seismic monitoring site. At least two strong-motion seismographs are installed in each monitoring space. The strong-motion seismographs are connected with linkage logic processing devices. A monitoring space is arranged in the linkage control center. The linkage logic processing devices are installed in the monitoring space. According to the invention, through the structures of the seismic monitoring site, the linkage control center and the monitoring center in the system, redundancy judgment can be performed on P-waves or S-waves in a seismic source; safety of seismic alarming judgment is ensured; seismic warning information can be given out as early as possible when the seismic occurs; a train which runs at the high speed is allowed to timely reduce speed and stop before the seismic occurs; the possibility of train derailment and overturning is reduced; life safety of passengers is ensured; accurate and timely after-seismic information is provided for superior command systems; and favorable conditions are created for disaster relief work.

The invention relates to an oil-quenching air-cooling vacuum furnace, which comprises a body of furnace, a conveying mechanism of workpieces, a vacuum system, an oil-quenching processing system, a cooling system and an electric control system. The conveying mechanism comprises a device for horizontally conveying workpieces and a device for vertically lifting workpieces, wherein the conveying device comprises double slide tracks for conveying workpieces which are arranged in the body of furnace, a trammer for workpieces which is cooperated with double slide tracks and a track support used for supporting the double slide tracks and fixed in the furnace. The double slide tracks are used for minimizing the phenomenon of shaking or derailing of workpieces, so that the workpieces can be sent to a processing zone or moved out of the furnace body steadily, in addition, by the cooperation of worm gear with a first worm and a second worm, a screw which is cooperated with a workpiece platform is provided on the second worm, the rotation of the screw drives the platform to move along the screw length direction up and down to realize the vertical lifting of the workpieces. The structure is simple and the operation is convenient.

The invention discloses a self-balancing reverse locking wheel structure of a suspension basket. The structure includes reverse locking wheels (1), reverse locking wheel connection boards (4), reverse locking wheel pins (2), reverse locking wheel hanging boards (3), a distribution beam (5), reverse locking wheel hanging board pin rolls (6), a distribution beam hanging board (7), a distribution beam hanging board pin (8), hanging basket rear anchor hanging boards (9) and a hanging basket rear anchor pin (10). The reverse locking wheels (1) are connected with the reverse locking wheel connection boards (4) through the reverse locking wheel pins (2). The reverse locking wheel hanging boards (3) are welded between the two reverse locking wheel connection boards (4). The reverse locking wheel hanging boards (3) are connected with the distribution beam (5) through the reverse locking wheel hanging board pin rolls (6). The distribution beam hanging board (7) is connected with the distribution beam through the distribution beam hanging board pin (8). The distribution beam hanging board (7) is welded with the two hanging basket rear anchor hanging boards (9). The hanging basket rear anchor hanging boards (9) are connected with a hanging basket lower level rod through the hanging basket rear anchor pin (10). The hanging basket is stable and quick in movement, so that the construction efficiency can be improved effectively. The hanging basket self-balancing capability is good when meeting conditions with railway joints or out-sync movement and the like, so that hanging basket derailing and capsizing risks are reduced substantially.

The invention discloses a design movable display stand and belongs to the field of commodity display equipment. The design movable display stand comprises arched bases, wherein two groups of arched bases are set; each group comprises two symmetrical arched bases; upper and lower end faces of each arched base are parallel; when four arched bases are folded, the top end faces thereof are exactly spliced into a complete round surface; a universal wheel is mounted at the bottom end of each arched base; inclined notches are set on inner side faces of the two groups of arched bases; drive motors arefixed in the notches on a group of arched bases; a threaded rod is fixed on the top end of each drive motor; an inclination angle of each threaded rod is equal to that of the notch at the corresponding side; and bases are in threaded sleeving on the two threaded rods. According to the design movable display stand, through work of the drive motors, the bases in threaded matching with the threadedrods are driven to lift up and down, and the four arched bases are stretched through up and down lifting of the bases, so the display stand is used flexibly.

The invention discloses an automatic door derail-preventing rail. The automatic door derail-preventing rail comprises an upper rail, a lower rail and a storage frame. The upper rail and the storage frame are fixedly connected through rivets, and the lower rail and the storage frame are fixedly connected through rivets. A lengthened protective plate is connected with the lower end face of the upperrail in a riveting mode, and first channel steel and second channel steel are welded inside the storage frame in sequence from top to bottom. According to the automatic door derail-preventing rail, due to the fact that a falling-preventing arc-shaped face, auxiliary rails and steel tooth grooves are arranged and mutually embedded, the area of contact between the falling-preventing arc-shaped faceand an inner groove of a sliding block is increased through the arc-shaped face, widened chamfers prevent the sliding block from being inclined, the chamfers cooperate with protrusions of the slidingblock to enable the sliding block to move in sliding grooves, and the phenomenon that the position of the sliding block on a guide rail deviates is avoided on the premise that the movement speed is not affected. Due to the fact that the steel tooth grooves and springs are arranged, the purpose of fixing is achieved, the shock in the contact process is reduced, and the automatic door derail-preventing rail is firmer, is suitable for different working conditions and has the better application prospect.

The invention relates to a sleeper damping, derailment-preventing and segment-damage-preventing device for a shield underground transportation system, and belongs to the technical field of shield equipment. Profile steel is arranged to serve as a sleeper, steel rails matched with a transport vehicle serves as rails, and the steel rails and the sleeper are connected in a pressing plate mode and fastened through bolts. According to the invention, the contact surface of the sleepers and a shield segment is designed into an arc with the same radius as the inner side structure of the segment, the profile steel serving as the sleeper is designed into a groove type, a rail determinator is cancelled, and damping rubber plates are additionally arranged among the sleeper, the shield segment and thesteel rails, the damping rubber plates and the sleeper are fixed through bolts, so that during shield construction, vibration and noise generated by the underground transportation system are effectively reduced and controlled, the segment is protected, the derailment phenomenon caused by the fact that wheels dynamically impact the steel rails to vibrate is reduced, the track mounting effect is improved, manpower, material resources and financial resources are saved, and the construction progress is accelerated.

The invention relates to a circuit breaker. The circuit breaker comprises a first circuit breaker and a second circuit breaker which are arranged up and down, wherein the first circuit breaker and thesecond circuit breaker are connected in parallel; the outer sides of the first circuit breaker and the second circuit breaker are sleeved with a shell; a transmission mechanism is arranged between the first circuit breaker and the second circuit breaker; a first switch of the first circuit breaker is connected with the transmission mechanism; the transmission mechanism comprises a movable plate,and a first rack and a second rack which are slidably connected to the side wall of the shell; the top ends of the first rack and the second rack are connected with the bottom of the movable plate; afirst gear matched with the first rack is arranged on the shell; a second gear matched with the second rack is arranged on the shell; the first gear and the second gear are connected through a transmission rack; and the bottom end of the transmission rack is connected with a second switch of the second circuit breaker through rubber strips. The second circuit breaker is used for replacing the first circuit breaker to continue to work, and normal operation is not affected.

The invention discloses a transporting device for refrigerator housings in a production line of a refrigerator plant. The transporting device comprises a pedestal which is arranged horizontally; a plurality of sliding rails are installed at an equal interval at the top of the pedestal; the top of each sliding rail is connected with a clamping block in a clamping manner; every two adjacent slidingrails are connected with a base plate through the corresponding clamping blocks; each limiting block is installed outside the corresponding fixing column in a sleeving manner; and the top of each limiting block is connected with a connecting plate through a screw. A user connects each clamping block to the corresponding sliding rail in a clamping manner; each base plate is connected to the corresponding clamping blocks by virtue of screws so that each base plate can slide on the sliding rails through the corresponding clamping blocks, the motion resistance is reduced, and the motion track is not prone to being changed. Subsequently, each limiting block is installed on the corresponding fixing column in a sleeving manner; the two ends of each connecting plate are correspondingly connected with the corresponding limiting block and a corresponding positioning plate so that the limiting blocks can be used for driving the base plates to move by virtue of the positioning plates in work. Eachpositioning plate plays a power transmission role and meanwhile makes the base plates be not prone to being derailed, and the base plates can be transported more stably.