30 results about "Fixed ramp" patented technology

A paper compartment cover can be unlocked to load a printer with a paper roll. A top cover is pivotally mounted on a flexible arm, and carries a platen in simple round journals with an opening for the snap-in assembly of the platen in the top cover. A lever shaft is also carried by the top cover in elongated holes so that it can move along the longitudinal direction of the elongated holes. On each side of the lever shaft, slider blocks are held in a manner enabling each of the slider blocks to linearly slide along a rib of the top cover. A lever is mounted on the shaft and, together with a return spring, provides a means for causing the linear motion of the lever shaft and the slider blocks. After the lever is lifted, the slider blocks are pushed against fixed ramps on a housing. Subsequently, the reacting force on the ramps unlocks the top cover from the housing.

The invention discloses a current-mode DC-DC converter which mainly solves the problem that an existing converter compensating circuit is difficult to integrate. The current-mode DC-DC converter comprises a feedback module (1), a compensating module (2) and a modulation module (3). The feedback module (1) is used for setting an output voltage of the converter, the compensating module (2) utilizes a transconductance amplifier to sample and amplify a current of a small capacitor so that capacitance multiplication can be achieved, and a compensating capacitance value is reduced greatly; meanwhile, the compensating module (2) compares a feedback voltage VFB and a reference voltage VREF so that an error signal VCOMP can be obtained, the modulation module (3) compares the error signal with a fixed ramp signal so that a driving signal with the corresponding duty ratio can be obtained, and regulation of the output voltage of the transformer is achieved. The compensating module (2) of the current-mode DC-DC converter can be completely integrated in a conversion chip, a pin of the conversion chip is simplified, the area of a PCB is reduced, and the current-mode DC-DC converter can be used in various portable devices small in size.

A system and method are disclosed for securing a blade to a blade post or handle base. A handle base is provided with a receiving port that includes a taper or dovetail configuration along a portion of each wall. The receiving port accepts a blade, and a cap is positioned within the exposed receiving port above the blade surface. The sides of the cap are secured within the dovetail sections along each wall of the receiving port and opposite securing ramps engage to secure the blade into position. The blade may be a keratome blade that is intended for opthalmic use, but the system and method can be used in connection with various types of opthalmic and non-opthalmic surgical knives.

A deployable ramp assembly including a fixed ramp portion and a pivotable ramp portion connected thereto through a direct pivot connection to pivot between stowed and deployed positions defined at a first angle from one another, a cover member pivotally connected to the fixed portion to pivot between closed and opened positions defined at a second angle from one another which is substantially smaller than the first angle, a drive assembly pivoting the cover member between the closed and opened positions, and a multiplier assembly interconnecting the pivotable portion and the cover member to transfer the pivoting motion of the cover member to the pivotable portion in an amplified manner, the multiplier assembly bringing the pivotable portion in the stowed position when the cover member is in the closed position and the pivotable portion in the deployed position when the cover member is in the opened position.

The invention relates to a preform conveyor system (10) comprising a set of transporting elements (18) each of which is provided with at least one grasping device (26) which carries a preform and is movable between a top release position and a lower grasping position. Said invention is characterised in that each grasping device (26) in connected in the axial upward and downward displacement to an associated bracket (46), said bracket (46) comprises a clamp (74) slidingly interacting with a fixed ramp (78) when the grasping device (26) is in the intermediate axial position between the top release position and the lower grasping position thereof in such a way that the axial sliding of the grasping device (26) is generated towards the top release position thereof.

A modulation system can switch between two modulation modes. In order to comply with limits on peak power in spectral bands outside the RF operating one the transmitter is required to ramp down to a condition of minimal power. To avoid fixed ramping and trailing bits, the transmitting signal is subjected to FIR filtering. The two FIR filters are primed with a sequence using a parallel input mode before serially entering the information data.

The invention relates to a direction-switchable urban expressway planar ramp control system, which is mainly used for solving the vehicle queue problem at the urban planar ramp caused by the current ramp opening quantity limitation and the fixed ramp form, so that the driving direction of the planar ramp allowed to pass in different periods is changeable. The direction-switchable urban expresswayplanar ramp control system includes a detector, a display and a special ramp disposed between an adjacent upstream exit ramp and a downstream entry ramp. The specific working methods are: if the detector detects the congestion of the main lane, the special ramp is switched to the exit ramp; and if the detector detects that the main lane is clear and the auxiliary lane is congested, the special ramp is switched to the entrance ramp. Through the real-time traffic state detection, the ramp form is determined and changed, so as to effectively solve the problem of low traffic efficiency at the urban expressway planar ramp caused by the limited number of ramp openings and the fixed ramp form.

The invention discloses a plastic composite pipe with a steel mesh skeleton, which comprises a first composite pipe body and a second composite pipe body. Springs are fixedly connected to the top and bottom of the inner wall of the first composite pipe body, and the inner side of the spring is fixed A slanting block is connected, the left side of the second composite pipe body communicates with a connecting pipe, and the left side of the connecting pipe penetrates into the inner cavity of the first composite pipe body. In the present invention, the first composite pipe body, inclined block, chute, roller, connecting pipe, second composite pipe body, spring, slide bar, chute, protection box, bearing, handle, fixed plate, clamp rod, and fixed block are arranged. , the threaded rod and the tooth plate are used in conjunction to solve the problem that the existing steel mesh skeleton composite pipe needs to be handed over to two composite pipes, resulting in poor clamping effect when the existing composite pipe is handed over , which facilitates the use of users, improves the practicability of the steel wire mesh skeleton composite pipe, and is suitable for popularization and use.

The invention discloses a cushioning and damping device for logistics transportation, comprising a bottom plate, wherein four corners of the bottom of the bottom plate are each fixedly connected witha roller frame; the inner cavity of the roller frame is movably connected with a roller through a rotating shaft; the top of the bottom plate is fixedly connected with a shell; and the top of the inner cavity of the shell is movably connected with a movable plate. By means of cooperation among the shell, the movable plate, the movable pipe, the first spring, the movable inclined block, the fixed ramp, the fixing block, the support block, the second spring, the sliding sleeve, the third spring, the first fixture, the movable lever and the second fixing bracket, the cushioning and damping devicefor logistics transportation solves the problem that the cushioning and damping effect of the existing logistics cart is poor, thus causing the phenomenon that the articles will drop when the transportation meets the bump so as to cause the damage of the articles. The cushioning and damping device for logistics transportation has the advantages of good damping effect, is favorable for the transportation of the articles, and greatly reduces the losses of enterprises and customers.

The invention provides a multifunctional automatic compensation gangway, being characterized in that a telescopic gangway is telescopically sleeve in the fixed ramp, and is driven by a telescopic mechanism arranged on the fixed gangway, In addition, the freight car is movably provided on the telescopic gangway and the fixed gangway, and the freight car is moved along the freight car track by a freight car traction mechanism provided on the fixed gangway, and furthermore, the telescopic gangway and the fixed gangway are integrally pitched by a pitching mechanism provided on the rear end of thefixed gangway. Using the multifunctional automatic compensation gangway, not only can the operation range be enlarged, but also can be suitable for the operation environment with height difference, and at the same time, the large cargo and the transportation personnel can be taken into account.

The invention provides a two-section unpowered lifting ramp of a cold storage side-hung door. The two-section unpowered lifting ramp comprises a fixed ramp body and a lifting ramp body. The lifting ramp body is arranged close to the cold storage side-hung door, and the fixed ramp body is located in front of the lifting ramp body. The lifting ramp body comprises a bottom frame, a lifting panel located on the bottom frame, a slide rail groove formed in the bottom frame, a slide rail located in the slide rail groove, wheels located on the lower portion of the lifting panel, a transmission grooved plate and a shifting pin assembly, wherein the transmission grooved plate and the shifting pin assembly are mounted on the upper portion of one side of the slide rail. The bottom frame and the lifting panel are connected through hinges. The slide rail is provided with grooves, a slope is located on one side of each groove, and the grooves correspond to the wheels on the lower portion of the lifting panel in position. The shifting pin assembly is mounted on the lower portion of the cold storage side-hung door. When the cold storage side-hung door is opened, the lifting ramp body slowly rises to the position aligned with the ground in a cold storage along with opening of the cold storage side-hung door, and a carrying vehicle can enter and get out of the cold storage through the ramp for carrying goods. When the door is closed, the lifting ramp body automatically descends, operation is simple, and the situation that the ramp or the cold storage side-hung door is damaged due to the fact that the door is closed when people forget to lower the lifting ramp body is avoided.

The invention provides a liftable and rotatable vehicle carrying plate for a parking device. The liftable and rotatable vehicle carrying plate aims at solving the problems that according to an existing parking device, after a vehicle carrying plate lifted in a hung mode through a rope falls to the ground, the vehicle carrying plate can not be directly rotated, and when a rotatable vehicle carrying plate is arranged on a rigid bracket, the height head needs to be solved. The liftable and rotatable vehicle carrying plate for the parking device is characterized in that concave high-strength thin plates (23) are arranged at the two ends of a bottom beam (21) of a rigid bracket (2) to form a channel for enabling the sinking edges of fixing ramps (12) at the two ends of the vehicle carrying plate (1) to freely rotate, and therefore after the vehicle carrying plate falls to the ground, a vehicle can be directly and stably driven on and driven off the vehicle carrying plate (1) without an elastic hinged ramp plate.

The invention relates to a roll-on roll-off ship suitable for the scale requirement of a Yangtze River three gorges ship lift, and belongs to the technical field of ship design. The roll-on roll-off ship comprises the main scale of a ship meeting the limiting requirement of a ship bearing box of a ship lift and the layout mode of the ship meeting the maximum loading space; the whole ship is provided with multiple layers of vehicle decks, fixed ramps are arranged between the vehicle decks, and openings for automobiles to get on and off the ship are formed in the sides. By maximizing the size ofa ship, integrating a superstructure living building, minimizing the arrangement of functional cabins on the ship except for a vehicle cabin, adjusting the length of a top deck, adjusting longitudinal inclination and minimizing the height of the vehicle cabin, the height of the vehicle cabin is minimized. The top layer handrail inclines inwards, the mast and the antenna can fall down, the vehicleloading capacity of the ship is maximized according to the single-stand-column eccentric arrangement mode customized according to the target vehicle model, and the navigation safety of the ship is guaranteed.

The invention discloses an improved letter box device, which comprises a base body installed on the upper side of the trolley through an oil pressure shrinking cylinder, and an oblique push rod is fixedly installed on the upper side of the right end surface of the trolley, and the top of the oblique push rod is fixed A hand-held bar with front and rear extensions is installed, and the front and rear ends of the hand-held bar are covered with hand-guard rubber sleeves. The inside of the base body is provided with a first hole, and the base on the left side of the first hole A second hole is provided in the inner wall, and a connecting hole is provided between the second hole and the first hole and passes through the inner wall of the base body and communicates with each other. The left side of the second hole is The inner top wall of the section is provided with a first sliding groove extended upwards, and a first sliding block is connected in translation in the first sliding groove, and a slope is fixed at the bottom end of the first sliding block. Department; the present invention is simple in structure, easy to operate, improves the painting efficiency, and saves time and effort.

1. A securing platform comprising:a reinforced rectangular frame and cover plate; the longest length runs parallel and rests upon the top of an open tailgate of a pickup,an eyebolt located 6 inches in from both ends of front face of platform; with attached securing chains to be anchored to tiedowns at rear of truck bed,a metal plate and a rubber pad are bolted 1⅝ inches in from both ends to the rear face of platform to hang 90 degrees below the horizontal plane of tailgate to function as stop from forward motion; a securing chain attached to the opposite end of each metal plate is anchored to the bumper of a pickup truck,steel tubing is welded to the rear face of the platform to form outside portions of a hinge and configured to attach ramps at three locations;2. Loading ramps comprising:1¼ inch steel square channel on the end; 1½ inch angle steel for six and eight foot sides, with 1 foot cross members spaced 10 inches apart,wherein a steel tube is centered and welded to the end of a ramp to form the center portion of a hinge connection,wherein loading ramps are attached to the platform by inserting a solid 1 / 4 inch steel rod through the three portions of steel tubing; therefore securing the ramp and allowing the ramp to pivot at various degrees from the plain of the tailgate.

The invention relates to the technical field of ships, in particular to a ship drainage structure and a ship. The ship drainage structure provided by the invention is arranged at a drainage port, close to one end of a fixed ramp, on a deck, and comprises a water tank and a drainage pipe. Specifically, the water tank is fixedly connected to the inner wall of the drainage port and located below thedeck, the extending direction of the water tank is perpendicular to the inclination direction of the fixed ramp, and a through hole is formed in the bottom surface of the water tank; the drainage pipeis mounted below the bottom surface of the water tank and is communicated with the through hole, so that cabin washing sewage flows into the water tank and then is drained out of the ship through thedrainage pipe. The ship drainage structure can directionally drain cabin washing sewage out of the ship, and can prevent the cabin washing sewage from crossing the ship drainage structure and flowingto a lower deck through the fixed ramp. According to the ship provided by the invention, by applying the ship drainage structure, cabin washing sewage on the ship can be directionally drained and cannot flow to the lower deck.

The invention relates to a roll-on roll-off ship fixed ramp type value measuring tool, which is characterized in that a vertical rod is provided with a sliding fixed platform capable of sliding and being locked along the vertical rod, and the sliding fixed platform is connected with one end of a horizontal rod with scales and enables the horizontal rod with the scales to be perpendicular to the vertical rod; a cable pulley assembly capable of sliding along the horizontal rod with the scales and being locked is arranged on the horizontal rod with the scales, a laser range finder is fixedly arranged on the lower portion of the cable pulley assembly, and the emission direction of the laser range finder is parallel to the vertical rod; and a permanent magnet is arranged at the other end of thehorizontal rod with the scales and used for being attracted and fixed to a roll-on roll-off ship fixed ramp. According to the roll-on roll-off ship fixed ramp type value measuring tool, the head andtail end type values of the ramp can be rapidly measured by a single person and are rapidly compared with standard type values, and whether a specified vehicle model is collided when passing through the ramp is effectively pre-judged, so that local maintenance reinforcement suggestions are provided for the fixed ramp which cannot meet the specified vehicle passing requirement, and economic lossesin the vehicle loading and unloading process of a shipholder are avoided.

The invention discloses a tube blank guiding device of a tube cold-rolling mill. The tube blank guiding device of the tube cold-rolling mill comprises a fixed pin shaft, the middle of the fixed pin shaft is provided with a suspension rack, the suspension rack is provided with an adjusting long through hole, both ends of the fixed pin shaft are respectively provided with an adjustable fixing ramp board, the middle of the bottom of each adjustable fixing ramp board is provided with a pair of fixing wheel shafts which are provided with detachable guide cams. According to the tube blank guiding device of the tube cold-rolling mill, by means of the adjustable fixing ramp at both ends of the fixed pin shaft, a user can adjust the gap between the fixing ramp boards according to the size of a tube blank and accordingly change the distance between the guide cams, so that dropping of the tube blank can be effectively avoided and the guiding speed can be improved. Besides, both ends of the bottom of each fixing ramp board are provided with limiting bends and can automatically scrape impurities on the surface of the tube blank. The tube blank guiding device of the tube cold-rolling mill is compact in structure, easy to assemble and high in practicality.

The invention relates to a shaft workpiece boring and milling clamping auxiliary adjusting device, and belongs to the technical field of machining auxiliary equipment. According to the technical scheme, the cross sections of a movable ramp iron (2) and a fixed ramp iron (4) are of right triangle shapes, the cross section of an adjusting ramp iron (6) is of isosceles trapezoid shape matched with the movable ramp iron (2) and the fixed ramp iron (4), and the adjusting ramp iron (6) is arranged between the movable ramp iron (2) and the fixed ramp iron (4); and the movable ramp iron (2), the adjusting ramp iron (6) and the fixed ramp iron (4) are stacked up and dowm together to form a cuboid, the periphery of the cuboid is provided with a baffle, a V-shaped cushion iron (1) is fixed on the movable ramp iron (2), an adjusting bolt (3) is in threaded connection with the adjusting ramp iron (6), and the baffle (5) is provided with sliding grooves matched with the adjusting bolt (3) and the movable ramp iron (2). The shaft workpiece boring and milling clamping auxiliary adjusting device has the beneficial effects that the stability of workpiece clamping can be ensured, the adjustment is convenient, the adjustment precision is high, and the boring and milling machining requirements can be met.

A ratchet comprises a head portion with a circular central housing having modular inserts in the form of three flat ring like layers, two outer fixed ramped profile layers engaged into housing locking profiles with a sequential actuating layer capable of limited rotation between. Opposing direction pawls are situated within the fixed layer ramped profiles. The actuating layer has engagement and disengagement profiles at either end of its pawl recesses projecting the incumbent pawls against the fixed layer ramped profiles in the chosen direction projecting them inwards locking the pawl teeth within the driven element teeth, whilst simultaneously disengaging the pawls facing the other direction. The actuating layer biasing protrusion resiliently projected in the chosen direction by a robust sprung plunger acting from within a switch bore, in the reverse direction the actuating layer resiliently rotates against said sprung plunger allowing the pawl teeth to resiliently slide over one another.