66results about How to "Shortened installation length" patented technology

The invention belongs to the technical field of damping for civil engineering structure, and particularly relates to a tuned mass damper used for controlling the low-frequency vibration of a building structure. The tuned mass damper comprises suspension components, a damping device and a mass block and is characterized by further comprising at least one swing support, when more than one swing support is arranged, the swing supports are nested from outside to inside, the lower part of each swing support is connected with the adjacent suspension component at the outer side of the swing support, and the upper part of the swing support is connected with the adjacent suspension component at the inner side of the swing support; the lower end of the adjacent suspension component at the inner side of the swing support is further connected with the adjacent swing support at the inner side of the suspension component or with the mass block; and the damping device is connected with the mass block. The tuned mass damper is compact in spatial structure, suitable for control on the vibrations of structures with frequencies of 0.15 Hz and even lower, great in cost performance, capable of effectively expanding the application range of swing-type tuned mass damper products, and very wide in market application prospect.

A proportional pressure control valve includes a valve box (10) having a pump (P), user (A) and reservoir (T) connections. Control piston (18) is guided in a longitudinally displaceably inside the valve box (10) for optionally connecting the pump connection (P) to the user connection (A) and the user connection (A) to the reservoir connection (T). A fluid-carrying connection is established between the pump connection (P) and a pilot chamber (20) of a pilot valve (22). The pilot valve (22) is controlled by a magnet system, especially a proportional magnet system (28). The proportional pressure control valve, for the fluid-carrying connection to the pilot chamber (20), has a bore (27) extending axially inside the wall of the valve box (10) and from a radial bore (9) of the housing (10) forming the pump connection (P).

The invention relates to a spreading shoe structure of a quasi-rectangular shield pushing oil cylinder. The spreading shoe structure comprises a ball, a top plate and a flexible plate, wherein the ball is installed at the end of a piston rod and provided with a spherical surface and an installing surface opposite to the spherical surface, and the spherical surface of the ball corresponds to the piston rod; the top plate is fixed to the installing surface of the ball; the flexible plate is fixed to the top plate. The spherical surface of the ball of the spreading shoe structure is arranged corresponding to the piston rod, and the top plate is connected between installing surfaces; in this way, space needed for the spreading shoe structure is greatly reduced, the installing length of the whole oil cylinder is reduced, then the length of a shield structure is also reduced, the manufacturing cost of a whole set of equipment is lowered, and the cost is effectively lowered. The ball can rotate by 360 degrees, and overall installing of the oil cylinder is facilitated.

A camera adaptor (19) is provided for connecting a camera (21) to an interface (13) of a medical-optical observation instrument (1) with a parallel beam path. The interface (13) is situated in the parallel beam path (9a, 9b) of the medical-optical observation instrument (1). The camera adaptor (19) has an instrument connector part (41) for connection to the interface (13) of the medical-optical observation instrument (1) and a camera connector part (43, 143) for connection to a camera (21). The beam path (43) runs through the camera adaptor (19) along a linear optical axis. The camera adaptor (19) has an objective-lenses combination (47) with a total focal length between 40 mm and 120 mm. A lens with a positive partial focal length leading on the instrument side in the objective-lenses combination (47) and is followed, on the side toward the camera, by a lens with a negative partial focal length.

A drive unit for a laboratory centrifuge, comprising a motor via which a centrifuge rotor that is attached to an inner shaft can be rotated. The motor drives a hollow shaft inside which the inner shaft that is attached in the centrifuge rotor is accommodated at least in part and is mounted to as to be able to oscillate. A spring stabilizer is disposed in the hollow shaft and around the inner shaft, whereby the drive unit is provided with a compact design while vibrations and noise are effectively reduced.

An optical observation instrument has two optical transmission channels for transmitting two partial ray bundles (9A, 9B). The optical observation instrument has a main objective (1) common to the optical transmission channels, an electronic image sensor (7) for sequentially recording the partial ray bundles (9A, 9B), an intermediate imaging optical system (3) between the main objective (1) and the image sensor (7) and common to the optical transmission channels, and a tilting mirror matrix (5) between the main objective (1) and the image sensor (7). The intermediate imaging optical system (3) is arranged so that the respective partial ray bundle (9A, 9B) is deflected toward the image sensor (7) and passes the intermediate imaging optical system (3) both on the way from the main objective (1) to the tilting mirror matrix (5) and on the way from the tilting mirror matrix (5) to the image sensor (7).

The invention discloses a combined type telescopic gangway system of a deep sea drilling ship. The combined type telescopic gangway system comprises a telescopic gangway (1), a power motor (2), a flexible pilot ladder (3), a sliding winch (4) and a guide rail (5), wherein the telescopic gangway (1), the power motor (2) and the guide rail (5) are respectively arranged on a deck (6), and the flexible pilot ladder (3) is arranged on the sliding winch (4) which is arranged on the guide rail in a sliding manner. According to the combined type telescopic gangway system of the deep sea drilling ship, disclosed by the invention, the gangway and the flexible pilot ladder, both of which are originally independent, are used in a combination manner, so that the installation length of the gangway is shortened, the use space of the deck is saved, and the better optimization of the deck layout is made possible; and meanwhile, the system can also be assembled modularly in advance beneath the ship and then integrally installed on the ship, so that the working efficacy can be improved greatly, and the construction period is shortened.

An electric drive system for a vehicle features two similar drive units, an electric energy source, an electronic control unit and a left and a right summation gear, which are configured as planetary gears. A drive unit drives the ring gear of the left summation gear, while the other drive unit drives the ring gear of the right summation gear. The ring gear of the left summation gear has a direct drive connection with the sun gear of the right summation gear, while the ring gear of the right summation gear has a direct drive connection with the sun gear of the left summation gear by way of a second mechanical gearset. A left sun gear shaft is proposed running through a left hollow shaft toward the center of the vehicle and a right sun gear shaft running through a right hollow shaft toward the center of the vehicle.

The present invention relates to an oil injection pump (1), which comprises a shell (11), an oil injection cam shaft (17) rotatably mounted in the shell and driven by a crank of an engine, at least one pump device (15) provided with a regulating rod (37) for regulating the oil injection amount and arranged above or inside the shell (11), and a centrifugal regulator equipped with a centrifugal counterweight (30). For obtaining the oil injection pump which is short in longitudinal direction, simple in structure, and safe in operation, the oil injection cam shaft (17) is hollow and a rod body (31) penetrates through the oil injection cam shaft (17). A lever arm (43) of the centrifugal counterweight (30) acts upon the rod body (31) at one end of the drive side of the rod body (31), the other end (34) of the rod body keeps an effective connection with the regulating rod (37).

The invention relates to a powered turret for directly driving a cutter head through a torque motor, which relates to a turret of a horizontal-type compound turning and milling center. The powered turret comprises a cutter head, a main-shaft motor, a core shaft, a guide pin, an inner tooth disk, an outer tooth disk, a lateral tooth disk, a tooth-disk seat and a cutter-head driving inner sleeve, wherein the cutter-head driving inner sleeve is installed at the outer part of the core shaft, the tooth-disk seat is installed at the front part of the cutter-head driving inner sleeve, the guide pin, the lateral tooth disk, the outer tooth disk and the inner tooth disk are sequentially installed on the tooth-disk seat, the front end of the core shaft is connected with the main-shaft motor through a bolt, and the cutter head is respectively connected with the inner tooth disk and the cutter-head driving inner sleeve through bolts; the powered turret has the structure that a power device and a rotating-angle detecting device are installed at the rear part of the cutter-head driving inner sleeve; a box body is installed at the outer part of the power device; a core-shaft fixed supporting seat is installed at the rear part of the core shaft and is fixed through a locknut, and meanwhile, the core-shaft fixed supporting seat is fixedly arranged on the box body through bolts. The powered turret has the characteristics that the powered turret has the advantages of novel structure, convenience in machining, small size and large torque, the precision is improved, the machining cost is lowered, the maintenance cost is lowered, and the like.

The invention relates to a solid waste compacting device, and provides an in-barrel compacting device for radioactive solid wastes used in small space. The device comprises a rack, a feed opening arranged on a waste generating region, a waste slide communicating the rack and the feed opening, a damper gate of a rack in-and-out barrel panel, a linear guide rail arranged on the bottom of the rack todelivery in and out a steel barrel, a multi-stage electric cylinder which is on the top of the rack and is connected with a compacting disk, a high-pressure vortex fan which is on a corner of the topof the rack and is connected with an exhaust port, a garbage bag holding box in the rack, an automatic bag cutting and sealing mechanism, and a 200L steel barrel. The device is convenient in operation, proper in appearance dimensions, and high in reliability, and effectively reduces generation of secondary wastes, and reduces contact of workers on radioactive contamination.

Pump units are known that have a drive shaft and a rotor, which is driven by the drive shaft and is arranged rotatably in a housing, the drive shaft having an oblique sliding plane, which interacts with the rotor and allows the rotor to nutate with the rotor axis thereof about a drive axis of the drive shaft, the rotor having a set of teeth on the end face of the rotor facing away from the drive shaft, said teeth meshing with a set of teeth formed on a housing of the pump unit, working spaces being formed between the teeth of the rotor and the teeth of the housing, which working spaces can be filled via an inlet and emptied via an outlet. It is disadvantageous that the pump unit has a comparatively large axial installation length, because the drive of the pump unit is arranged on an end of the drive shaft facing away from the rotor. In the pump unit according to the invention, the axial installation length is shortened. According to the invention the drive shaft (1) is surrounded by a stator (15) and magnets (16) are provided on the drive shaft (1), which magnets interact magnetically with the stator (15).

The invention belongs to the field of tunnel construction, and discloses an energy-saving ventilation method based on an existing railway tunnel and an inclined shaft for newly-built tunnel construction. The energy-saving ventilation method comprises the following steps that a blocking wall and a fan are arranged at the downstream of a divergence of the existing inclined shaft and a newly-built adit, the fan is used for extracting fresh air in the inclined shaft in an unused section, and the fresh air supplied to tunnel face construction of a newly-built tunnel; under the action of the fresh air, dirty air is exhausted out of the tunnel along the newly-built tunnel and the existing inclined shaft; in order to increase the dirty air exhaust speed, jet fans are arranged in a utilization section of the inclined shaft at intervals of 200-300 m, and dirty air exhaust is accelerated. and meanwhile, a multi-stage spraying dust falling curtain is arranged in an air return inclined shaft, so that pollutants such as solid particles in the air are reduced, and the ventilation effect is improved. According to the method, the ventilation air supply length can be reduced, and the ventilating fanpower is reduced, so that energy consumption is reduced.

The invention belongs to the technical field of transmissions, and particularly relates to an integrated planetary mechanism two-gear transmission which comprises a transmission shell, an input shaftand an output shaft. The input shaft is provided with a sun gear and a high-gear cone hub, the output shaft is provided with a planet carrier, and the planet carrier is rotationally connected with a planet gear. A low-gear cone hub is arranged in the transmission shell; the planet gear is sleeved with a gear ring, and the gear ring is located between the high-gear cone hub and the low-gear cone hub; a first synchronous lock ring is arranged between the high-gear cone hub and the planet gear, and a second synchronous lock ring is arranged between the low-gear cone hub and the planet gear; and the first synchronous lock ring and the second synchronous lock ring are located on the two sides of the gear ring and can be meshed with the gear ring through spline teeth, the first synchronous lockring and the second synchronous lock ring are each provided with a positioning part, and the two sides of the gear ring are provided with driving mechanisms. According to the scheme, a planetary mechanism and a synchronizer assembly are combined into a whole, the installation length is shortened, the number of parts is reduced, the rotational inertia of the two ends of a synchronizer is equivalentand small, and the service life of the synchronizer is prolonged.

The invention discloses a self-silencing type axial flow fan ventilation system for a tunnel, and belongs to the technical field of tunnel ventilation equipment. The self-silencing type axial flow fanventilation system comprises a fan room, an air outlet channel and ventilation equipment, wherein an air inlet communicating with the tunnel is formed in one side of the fan room, and the air outletchannel vertically communicating with the ground is formed in the other side of the fan room; the ventilation equipment comprises an air valve, a silencing current collector, an axial flow fan and a silencing diffuser; and the silencing current collector and the silencing diffuser are the same in structure, and each of the silencing current collector and the silencing diffuser is composed of a horn-shaped housing, a wall-attached silencing layer, a left vertical silencing sheet, a right vertical silencing sheet, a left horizontal silencing sheet and a right horizontal silencing sheet. According to the self-silencing type axial flow fan ventilation system, the silencing current collector and the silencing diffuser are adopted to replace a silencer, a current collector and a diffuser which need to be combined for use before, so that the overall mounting length of the axial flow fan ventilation system is shortened, the mounting space of the axial flow fan ventilation system is reduced, the civil engineering workload of the fan room is reduced, and the overall manufacturing cost of the ventilation system is reduced.

The invention provides a clamping mechanism and aims to solve the problem that an existing clamping mechanism is relatively long and is complicated in installation. The clamping mechanism comprises a die adjusting template and an oil cylinder; the die adjusting template is provided with a clamping hole; the rear surface of the die adjusting template is recessed inwards to form an accommodating groove; the oil cylinder is provided with a die assembly connecting rod which is connected with a movable template after passing through the clamping hole; the oil cylinder is inserted into the accommodating groove from the rear surface of the die adjusting template and is fixed to the rear surface of the die adjusting template; the die assembly connecting rod passes through the clamping hole and is in sliding fit with the oil cylinder along the axis direction of the die assembly connecting rod. The clamping mechanism provided by the invention has the beneficial effects that the die adjusting template is provided with the accommodating groove, and the oil cylinder is inserted into the accommodating groove, so that the installation length of the oil cylinder exposed from the rear side of the die adjusting template is greatly shortened, and the overall length of an injection molding machine or a die-casting machine is greatly reduced. The clamping mechanism provided by the invention also has the advantages of being simple in structure, reliable in action, long in service life, convenient to mount, dismount and maintain, small in floor area and the like.