44results about How to "Constant position" patented technology

The invention provides a method for generating an electronic map. The method includes a data collecting procedure, a data storage procedure and an electronic map displaying procedure, wherein the data collecting procedure includes a step of collecting vector data and additional data corresponding to the vector data; the data storage procedure includes the steps of storing the collected vector data and the collected additional data in a server database, enabling the vector data corresponding to different types of main body elements to be stored in a plurality of layers, and enabling the vector data of each type of main body elements to be stored in one layer; the electronic map displaying procedure includes the steps that an electronic map displaying end obtains the vector data and the additional data from a server, draws vector diagrams corresponding to each layer of vector data layer by layer according to the vector data in each layer, and adds the additional data related to main body element identification data (ID) in the layer of vector data, and consequently the electronic map is generated in a displaying device.

A wheelchair according to one embodiment is provided with a frame and a seat assembly that is movable in elevation relative to the frame. The frame has a seat hinge mounted thereto, and is rotatably coupled to left and right wheels. The seat assembly has a side member hingedly coupled to the seat hinge and a seat back hingedly coupled to the side member such that the seat back can be maintained at a constant angle relative to the frame when the side member pivots about the seat hinge and moves the seat assembly between multiple elevations. The wheelchair also comprises a lockable spring hingedly mounted to the frame and to the seat assembly; the spring is lockable at multiple positions thereby locking the seat assembly at the multiple elevations. This spring can be sufficiently elastic to suspend the seat assembly and absorb shock at each of the locked multiple elevations.

The present invention relates to a fluidized lower leg protection and support system and method. The system can include an inner positioner. The inner positioner can displace and contour three-dimensionally as though it was fluid to the sides and top of the leg while not having flow characteristics that would result in migration of the medium under the force of gravity. The system can also include an outer support which is received over the inner positioner. The outer support can be in the shape of an open boot. The outer support can include an ultra low pressure plenum. The ultra low pressure plenum is filled at a predetermined low pressure for distributing pressure along the length of the outer support, but not providing significant elevation of the lower leg and heel by itself.

The present invention is a lumbar support system that retreats into the seat back when reclined, providing a constant pressure support. The lumbar support system has a lumbar support basket that can retreat into the seat back. The lumbar support basket is supported by a crossbar that is pivotably connected to opposite sides of a seat frame via a pair of connecting members. A spring is provided for biasing the connecting members to a biased position.

A control apparatus for a web rotary printing press includes: a detector, located downstream of a former and provided halfway through a transport path for a web or a signature from the former to a chopper, for detecting the position of an end portion of the web on a side folded by the former; and a former and turn bar control device for adjusting the position, in the paper flow direction, of the former or the position, in the lateral direction, of the chopper in response to an output from the detector.

A continuity system for a building is designed to compensate for the downward settling of building elements over time, which occurs due to the shrinkage of wooden building members. The continuity system comprises one or more hold-down assemblies each having a stud-connector secured to a generally vertical stud, a generally vertical rod inserted into an opening of the stud connector, a rod-gripping member in toothed engagement with the rod above the opening, and one or more positioning elements exerting a downward force on the rod-gripping member. The rod has a lower portion secured to a stable building element such as the building's foundation. The opening of the stud-connector defines a frustoconical bearing surface on the upper surface of a portion of the stud-connector, or on a gripper support element in some embodiments. The rod-gripping member includes a plurality of gripping portions each having a lower surface defining a circumferential portion of a frustoconical shape sized and adapted to conform with the frustoconical bearing surface of the stud-connector. If the stud and stud-connector settle downward with respect to the rod, the downward force of the positioning element causes teeth of the gripping portions to disengage from circumferential teeth of the rod so that the rod-gripping member moves downward until the lower surfaces of the gripping portions bear against the frustoconical bearing surface of the stud-connector. The radial components of the reaction forces of the frustoconical bearing surface of the stud-connector causes the teeth of the gripping portions to reengage the teeth of the rod. If lateral forces on the building (e.g., earthquake or strong winds) urge the stud and stud-connector upward relative to the rod, the frustoconical bearing surface of the stud-connector exerts radially inward compression forces onto the gripping portions to cause the teeth of the gripping portions to engage the teeth of the rod and thereby substantially prevent the rod-gripping member and stud-connector from moving upward relative to the rod.

In order to solve the problem that in the prior art, after a complex connecting rod unlocking mechanism is assembled, a driving rod piece is located in a shell, and the angle of the driving rod piececannot be measured, the invention provides a driving rod piece angle measuring tool of the complex connecting rod unlocking mechanism. The measuring tool comprises a mounting platform, a latch hook swing angle testing assembly, a latch hook positioning mechanism, a rocker swing angle testing assembly, a connecting rod and a locking mechanism. The latch hook swing angle testing assembly, the latchhook positioning mechanism and the rocker swing angle testing assembly are all arranged on a bottom plate of the mounting platform. One end of the connecting rod is connected with a driving end of a rocker arm connected with the to-be-tested unlocking mechanism, and the other end is connected with one end opposite to the handheld part of the handle, and the connecting rod, the handle and the rocker arm form a parallelogram mechanism. The invention further provides a method for measuring the angle of the driving rod piece through the measuring tool. Through using the parallelogram mechanism, the swing angle of the driving rod piece which cannot be measured in the shell is led out of the shell to be measured, and the angle of the driving rod piece is measured before assembly.

The invention discloses a hydraulic limiting device and a concrete pump truck, relates to the technical field of engineering machinery and solves the technical problem of the proneness of locking failure and locking insecurity during swing leg locking in the prior art. The hydraulic limiting device comprises a hydraulic drive mechanism, a hydraulic actuating mechanism and a locking structure. The locking structure comprises a locking portion and a connecting portion, wherein the locking portion is connected with the hydraulic actuating mechanism, and the connecting portion is fixedly connected to a movable member of a leg swing cylinder into an integral structure. The hydraulic drive mechanism is connected to the hydraulic actuating mechanism and can drive the hydraulic actuating mechanism to drive the locking portion to move to a position blocking in the movement path of the connecting portion or to move to a position away from the movement path of the connecting portion. The concrete pump truck comprises a base, a swing leg, the leg swing cylinder and the hydraulic limiting device. The hydraulic limiting device and the concrete pump truck are used for improving the reliability and automation degree of the limiting device of the swing leg.

The invention discloses a magnetic latching relay for resisting electromagnetic repulsion. The magnetic latching relay comprises a relay base, wherein a stator plate assembly and a movable leaf spring assembly are arranged in the relay base; the movable leaf spring assembly is in contact connection with the stator plate assembly and comprises a conducting plate, a push card and a leaf spring; one end of the leaf spring is fixedly connected with the conducting plate; the other end of the leaf spring is connected with the push card; one end, connected with the conducting plate, of the leaf spring is in a bending structure; a positioning clamping groove is formed in the push card; and the push card is connected with the leaf spring through the positioning clamping groove. Through a bending structure design of the leaf spring, by resilience force of the leaf spring, the influences on a relay product caused by electromagnetic repulsion, contact system pressure, relay stress, mechanical impact and the like are reduced to the minimum; and meanwhile, the electromagnetic repulsion is counteracted by the resilience force of the leaf spring, so that the electrical life of the relay is greatly prolonged; and the resistance to temperature rise is greatly improved.

A single-side fast opening and closing control system of a large double-top-cover mechanism of a launching platform comprises a front top cover, a rear top cover, a front top cover hydraulic oil cylinder for driving the front top cover to move, and a rear top cover hydraulic oil cylinder for driving the rear top cover to move. Hydraulic pipelines connected with the front top cover hydraulic oil cylinder and the rear top cover hydraulic oil cylinder are respectively provided with a proportional flow valve, a proportional overflow valve and an electromagnetic directional valve. A valve micro-processing controller is connected with the proportional flow valves, the proportional overflow valves and the electromagnetic directional valves. A main controller is connected with the valve micro-processing controller and photoelectric encoders through a CAN bus. The photoelectric encoders are arranged on a front top cover mechanism and a rear top cover mechanism respectively. Double-loop individual control is performed on the front top cover and the rear top cover, and the flow of a front top cover loop and the flow of a rear top cover loop are controlled through the proportional flow valves respectively; the movement speed of the front top cover and the movement speed of the rear top cover are kept consistent, the front top cover mechanism and the rear top cover mechanism do not interfere with each other, damage to the front top cover mechanism and the rear top cover mechanism is prevented, the top covers are fast opened and closed in a double top cover linkage mode when the launching platform carries out movements of the top cover mechanism, and the launching preparation time is shortened.

The invention provides a pneumatic tire with improved durability. A tire body of the pneumatic tire comprises a first tire body ply and a second tire body ply, wherein the first tire body ply reversely wraps around a bead core and bead filler from the inner side of an axial direction of the tire to the outer side of the axial direction of the tire, the second tire body ply forwardly wraps along the bead core and bead filler in a manner of downwards extending from the outer side of the axial direction of the tire, the height of a reverse wrapping endpoint of the first tire body ply is (0.45 to0.55)SH, a forward wrapping endpoint of the second tire body ply is located at a position, which is away from a bead toe position by 3mm, and SH means tire section height; a reinforcing rubber sheet which extends along the radial direction of the tire is arranged between the second tire body ply and tire bead protecting rubber, the vertical height from the lower endpoint of the reinforcing rubbersheet to the bead toe is 5mm to 11mm, and the width of the reinforcing rubber sheet along the radial direction of the tire is 42mm to 48mm. According to the pneumatic tire with improved durability, through the double tire body plies and the tire bead structure with the composite reinforcing rubber sheet, the durability of the tire can be improved.

The invention provides a liquid-cooling cradle cabinet, and the cabinet comprises a cabinet frame, wherein the interior of the cabinet frame is provided with a water supply pipe; a cradle which is rotationally connected with the cabinet frame, wherein a high-power functional module is fixedly arranged on the cradle, and a water cooling channel is formed in the high-power functional module; a rotating water joint which is fixedly arranged on the cabinet frame, and comprises a mounting rack fixedly arranged on the cabinet frame; a first water joint which is rotatably arranged on the mounting frame, and a first cavity communicated with the water cooling channel is formed in the first water joint; a second water joint which is rotatably arranged on the mounting frame, wherein the second cavitycommunicated with the water supply pipeline is formed in the second water joint, and the first cavity is communicated with the second cavity. At least two rotary water joints are arranged on the cabinet, and the fluid in the water supply pipeline flows into the water cooling channel through the rotary water joints and finally flows out of the water cooling channel through the rotary water joints.According to the liquid cooling cradle cabinet provided by the invention, the cooling water performs liquid-solid heat exchange, so the heat exchange efficiency is higher, and more working conditionscan be adapted.

The invention relates to a sewing machine used for making dustproof clothes. The machine includes a machine frame, a lead wire, a housing and a press device. A guide rail is arranged on the platform of the machine frame in the length direction, one side of the machine frame is provided with a hollow-pipe-like inserted rod, and the end, away from the machine frame, of the inserted rod is connectedwith a threading needle; the lead wire passes through the inserted rod and is connected with the end, located in the inserted rod, of the threading needle; the machine shell is connected with a guiderail and provided with cavities running through the two end faces of the machine shell, the upper end face of the machine shell is provided with a guide groove formed in the length direction of the machine shell, and the periphery of the guide groove is provided with a scale used for distance judgment. The press device is installed in the guide groove. According to the technical scheme, the sewingeffect is good, it is ensured that the desired sewing effect can be reached each time, and the sewing efficiency is high.

The invention relates to the technical field of degradable plastic self-sealing bag production, and discloses a degradable plastic self-sealing bag plastic sealing strip pasting device and pasting process. The degradable plastic self-sealing bag plastic sealing strip pasting device comprises a bottom end fixing plate, folding roller driving motors, a rolling driving motor and a cutting driving motor, wherein a pasting operation table is fixedly arranged on the bottom end fixing plate; and a plastic sealing strip feeder, a hot-pressing pasting device and a cutter are sequentially arranged on the pasting operation table from left to right. Through the combined action of a power transmission mechanism and a gear box, the moving distance of a movable feeding table together with a three-phase laminating device can be completely the same as the moving distance of a fixing disc; and the operation to measure the length of a reel sleeve of a degradable plastic thin film at first and then to adjust the position of the entire movable feeding table together with the three-phase laminating device is not needed, so that errors in the measuring and adjusting process can be avoided when the working procedure is reduced, it can be guaranteed that the plastic sealing strip pasting position exists at the end part of the plastic thin film, the use of plastic thin films of larger specifications is not needed for the production of plastic self-sealing bags, and the raw material cost can be reduced.