38results about How to "Reduced moment load" patented technology

A sheet alignment device, that is included in a sheet finishing apparatus integrally mounted with an image forming apparatus to an image forming system or connected to the image forming apparatus, includes an accommodating unit configured to temporarily accommodate a paper sheet and a paper sheet stack including the paper sheet therein, and a sheet alignment unit configured to align the sheet stack including the paper sheet in a direction perpendicular to a sheet travel direction. The sheet alignment unit has a first alignment member configured to move between a sheet receiving position and a sheet alignment position along the direction perpendicular to the sheet travel direction so as to push the sheet stack and a second alignment member configured to move to a fixed position and remain stationary thereat so as to stop the sheet stack pushed by the first alignment member.

The invention provides a vertical shaft tidal current generating set. The vertical shaft tidal current generating set comprises three modules, namely an upper layer platform part, a supporting frame part and an impeller part, wherein the upper layer platform part mainly comprises a generator, a gear box, a horizontal connecting shaft, a supporting platform, a supporting column and a vertical connecting shaft; the supporting frame part is formed by connecting an upper frame plate, a lower frame plate, a left frame plate and a right frame plate; and the impeller part comprises a main shaft, a spoke sleeve, a spoke, a spoke shaft, a blade, a blade shaft, a wheel disk and an adaptive attack angle control device. The invention provides the high-performance vertical shaft tidal current generating set, which has high starting and generating performances and high structural strength, can be developed towards large-scale direction, can be used below a floating platform and above a pile base and a tension leg, is convenient to produce, manufacture, install and debug, and is suitable for engineering application.

The invention discloses a roadway roof supporting method of a coal seam roof, a soft rock roof or a composite roof and for coal mine deep mining. The roadway roof supporting method comprises step 1, performing extension anchoring on coal walls through an extended anchor rod, wherein the coal walls are arranged on the bilateral sides of a roadway respectively; step 2, performing composite supporting on a shoulder roof through a shear resistance anchor rod and a shear resistance anchor cable and simultaneously locking a shoulder soft rock roof or a fracture development roof through the anchoring force in the shear resistance anchor rod and the shear resistance anchor cable, wherein the shoulder roof is close to the coal walls which are arranged on the bilateral sides of the roadway respectively; step 3, anchoring the coal seam roof, the soft rock roof or the composite roof on a hard roof through a high strength anchor cable in the middle of the roadway so as to reduce the bending degree and prevent the bending failure. According to the roadway roof supporting method of the coal seam roof, the soft rock roof or the composite roof and for the coal mine deep mining, the different properties of anchor rods are used according to deformation characteristic of different positions of the roadway, the construction is simple and convenient, the construction speed is high, the efficiency is high, the control effect on the soft rock roof, the composite roof and a broken roof during deep mining is good, the bearing capacity of a supporting structure is large, and the repair rate of the roadway is low.

The invention provides a gangway structure for connecting a floating bridge with a floating platform and belongs to the technical field of floating bridge connection. The gangway structure for connecting the floating bridge with the floating platform comprises the floating bridge, the floating platform, footplates, a gangway and supporting limiting frames, wherein the footplates are arranged on the floating bridge and the floating platform; the gangway is hinged between the footplates of the floating platform and the floating bridge; and the supporting limiting frames are hinged on the floating bridge and the floating platform. According to the gangway structure for connecting the floating bridge with the floating platform, as a platform footplate is hinged on a floating bridge platform and the platform footplate is matched with a truss type gangway, the adapted draft difference is great and the adaptation is high; as the supporting limiting frames are arranged and a main support is arranged in the form of a double A-shaped truss, the position of the gangway structure between the floating platform and the floating bridge is effectively limited at a maximum draft difference and at a minimum draft difference so as to ensure that vehicles can safely pass; damage of the bridge body caused by collision between the floating bridge and the floating platform can be avoided; and moreover, the design load of the truss type gangway is reduced, the weight of the structure is reduced and the safety is enhanced.

The invention discloses a feed-forward control method of a wind generating set multi-laser beam multi-speed measurement section radar. According to the feed-forward control method, a pulse laser radaris adopted to provide a plurality of laser beams, the distance between the installation position of the laser radar and a speed measurement section in the axial direction of an impeller of a wind generating set is within 50-200 meters, and at most 10 wind speed measurement distances are set at will; and the number of the speed measurement distances and the corresponding speed measurement positions are determined, and thus, a multi-laser beam multi-speed measurement section radar feed-forward control wind speed measurement framework is formed, and then the multi-laser beam multi-speed measurement section radar feed-forward control wind speed measurement framework is controlled to achieve multi-laser beam multi-speed measurement section radar feed-forward control. By means of the feed-forward control method, the action of a variable-pitch actuating mechanism can be effectively reduced, the running reliability of the wind generating set is improved, the fluctuation range of the rotatingspeed of a generator is greatly reduced, and the My bending moment load at the bottom of a tower barrel is reduced.

The invention aims to shorten the moment of the vertical dimension of a swing arm relative to an arm root and provides a workpiece transport device. The workpiece transport device comprises a support base, a support arm in rotatable connection with a main rotation axis relative to the support base, a hand retaining arm in rotatable connection with an elbow joint axis relative to the support arm, a hand in rotatable connection with the elbow joint axis relative to the hand retaining arm, a support arm motor used for driving the support arm to rotate around the support base and arranged in the support base, a hand retaining arm motor used for driving the hand retaining arm to rotate around the support arm, a hand motor used for driving the hand to rotate around the hand retaining arm and arranged in the support arm, a joint axis coaxially arranged together with the elbow joint axis and used for driving the hand retaining arm to rotate relative to the support arm, a transmission shaft used for transmitting the power for driving the hand to rotate, a first reduction mechanism arranged in the support base and used for reducing the output of the support arm motor, and a second reduction mechanism arranged in the support arm and used for reducing the output of the hand retaining arm motor.

An article transport facility includes a support member capable of supporting a second support component from below while allowing a vertical movement of a first support component with respect to the second support component, in a projected state in which the second support component is located in a projected position. The support member is supported directly or indirectly by a ceiling.

The invention describes a processing device for rail systems in urban areas, having a travel drive (5), a processing drive (6) and a contour-defining, rotationally driven processing tool (7) mounted in a floating manner on a shaft (10) arranged in a housing (11), wherein the processing tool (7), the housing (11) and the shaft (10) are arranged on a chassis (2) having wheels (3) and can be placed by a feed drive (8) against a rail head (13) to be processed. In order to configure a device of the type described at the outset in such a way that it has a compact design such that it can be used forprocessing rail systems in urban areas both above ground and below ground, it is proposed that the processing tool (7) is of pot-shaped design and attached end-side by its base to the shaft (10), wherein the circumferential surface of the cutting edge-bearing flank of the processing tool (7) at least partially circumferentially encloses the shaft (10) and the closer-situated shaft bearing (12).

A linear-motor type transport device for transporting material for an absorbent article includes: a shaft portion that has an axial direction, a radial direction, and a circumferential direction; a pair of guide portions that is disposed on the shaft portion with a predetermined axial-direction space between the guide portions and that forms an orbital transport path that extends along the circumferential direction; a mobile unit that moves on the transport path along the guide portions while supporting a transport head rotatably about a rotation axis; a cam mechanism that rotates the transport head about the rotation axis through a predetermined angle when the mobile unit is moved on the transport path; and a controller that moves the mobile unit by supplying currents to conductors and generating a propulsive force between one of the conductors and a magnet that is disposed on the mobile unit.

The invention discloses a prefabricated assembly pier and beam fixing structure and a construction method thereof. The prefabricated assembly pier and beam fixing structure comprises girders, prefabricated pier columns and a bent cap. The bent cap comprises an upper layer cast-in-place structure and a lower layer prefabricated structure. Multiple welding reinforcing steel bars arranged on the upper layer cast-in-place structure are connected with corresponding girder longitudinal main ribs of the two girders located on the two sides of the bent cap. The position, correspondingly connected witheach prefabricated pier column, of the lower layer prefabricated structure is provided with multiple parallel vertically-arranged metal corrugated pipes. Each prefabricated pier column comprises multiple vertically-arranged pier column main ribs. The upper ends of the multiple pier column main ribs extend upwards out of the upper faces of the corresponding prefabricated pier column. The extend-out portions of the multiple pier column main ribs are matched with the multiple metal corrugated pipes. In the installation process, each pier column main rib penetrates through the corresponding metalcorrugated pipe. The bending moment load of each pier bottom in the bridge axis direction is reduced, the weight of the prefabricated bent cap is greatly reduced, and the requirements for local transportation and elevating capacity can be easily met.

A crane (2) comprising a base portion (4), two arms (6, 8) displaceably connected to the base portion and a lifting boom (22) displaceably connected to the base portion, said lifting boom being provided with a lifting wire (32) and a lifting member (30), for example a lifting hook, for lifting a load, wherein the two arms and the base portion in combination comprise at least three tower flange connection element (10) is arranged to be detachably connectable to cooperating crane connection elements on a flange of a wind turbine tower section, wherein each arm comprises one of the tower flange connection elements, and wherein the vertical distance between any two tower flange connection elements in the normal operating position of the crane is less than 1 m, less than 50 cm or less than 25 cm. In this way a crane is provided which can be attached to a flange located at the upper portion of a tower section.