68 results about "Wedge cushion" patented technology

The present invention relates to a head restraint kit for use with a medical head device for immobilizing the head of a patient in medical research, diagnosis and operation. The head restraint kit is particularly suitable for use with a head coil for magnetic resonance imaging. The head restraint kit contains a head rest pillow for providing support to the head of a patient, a neck cushion for providing neck support, and one or more wedge cushions for providing further support for the head. The head restraint kit may also contain one or more compact square cushions which can be inserted into a space between the head and the medical head device for additional head support. The head restraint kit may further contain a cloth strap placed over the forehead of a patient for protecting and securing the head against movement.

A method for transferring a patient from a first surface to a second surface includes providing a winch having a drive system and two reels operatively coupled to the drive system. Two straps are attached to each of the reels. Two wedge cushions are provided for pushing the patient in the direction of the winch from the first surface to the second surface. The wedge cushions have a cover, an insert and an attachment mechanism for attaching them to the straps. The wedge cushions are thinner at the attachment mechanism end. The first of the two straps is passed beneath the patient and is attached to a first wedge cushion. The second of the two straps is passed beneath the patient and is attached to another wedge cushion. The reels are rotated, thereby pulling the two straps until each of the wedge cushions wedge firmly beneath the patient. Nest, the reels are rotated together, thereby pulling the two straps until the patient is transferred from the first surface to the second surface.

The invention discloses a curved-jacked steel pipe section. The curved-jacked steel pipe section is characterized in that: a pipe joint at one end of the steel pipe section is a socket, and the pipe joint at the other end is a bell mouth; circular stiffening rings are arranged on the bell mouth and socket end parts; longitudinal stiffening plates are arranged between each circular stiffening ring and a steel pipe; wedged cushion blocks are arranged between the circular stiffening rings of two steel pipe sections; and the circular stiffening rings of the two steel pipe sections are connected by bolts. Flexible connection is realized between the pipe sections provided by the invention in curved pipe jacking, and is converted into rigid connection after the jacking is finished. The curved steel pipe jacking pipe section has the advantages of simple structure, compact arrangement, relatively lower cost and relatively shorter construction period, and is relatively easier to operate in construction.

The invention relates to a deflecting optical wedge scanning device. The device comprises an optical wedge and picture frame assembly, an angle encoder, a horizontal rotating shaft, a working table and a driving control system, wherein the optical wedge and picture frame assembly consists of a wedged cushion block, an optical wedge, an elastic block, an optical wedge pressing plate, a picture frame and an O-shaped washer; the horizontal rotating shaft is divided into a left section and a right section which are positioned on the two sides of the picture frame respectively; the right end of the right section of the horizontal rotating shaft is fixed with the angle encoder; a first module consists of a linear motor, a horizontal guide rail, a horizontal slide block, a horizontal connecting block, a cover plate and a grating ruler; a second module consists of a double end threaded stud, a joint bearing and a single end threaded stud; a third module consists of a vertical guide rail, a vertical slide block, a picture frame connecting plate and an L-shaped plate; and the driving control system consists of a computer, an input / output control circuit, a step motor driver and a signal processing and control circuit, and can realize open loop or closed loop control. In the device, small-angle precise swinging of the optical wedge device is realized through traction of the slide block, so the motion control accuracy is improved. The device can be individually used or two devices can be combined for use, so the requirements of scanning and positioning in different directions can be met.

The invention discloses a mechanical transmission closed test bed and a test method thereof. The test bed comprises a motor, connection gear boxes, a torque and rotation speed sensor, a tested transmission, an accompanying transmission and a loader, wherein the loader comprises a spiral spline shaft, a loaded gear, a plane bearing, a pair of wedge cushion blocks, a sliding bearing, a thrust bar and an oil cylinder; the motor is connected with the left connection gear box for providing rotation power for the overall closed test bed; the two transmissions are connected in a back-to-back mode, the tested transmission is connected with the left connection gear box via the torque and rotation speed sensor and the accompanying transmission is directly connected with the right connection gear box; and the loader is arranged onto the right connection gear box for providing different loads for the overall closed test bed. A transmission fatigue life test and a reliability test can be carried out, the closed structure is adopted, the cost is low, energy is saved, the structure is compact, the use is convenient, and the test bed can be applied to transmissions of various models.

The invention discloses an alignment support device for a permanent-magnetic wind power generator. The alignment support device comprises at least three alignment support parts. Each alignment support part comprises a support plate and a support bolt, wherein the support plate is fixedly arranged on an end cover of the generator; a threaded hole is formed in the support plate, and penetrates through the support plate along the radial direction of a rotating shaft of the generator; the bolt is arranged on the threaded hole; and the bottom end of the bolt can contact the outer surface of the rotating shaft of the generator. A certain number of bolts fix the rotor by taking the end cover of the generator as a support to make the rotor always in an acting force balanced state, so that the rotor is prevented from being attracted onto or colliding with a stator under the action of gravity and magnetic attraction force in operation such as the replacement of a rotor bearing and the like; compared with the prior art in which the stator and the rotor are supported by stainless steel wedged cushion blocks, the rotor support device adopting the bolts has a simple structure, and is convenientto assemble and disassemble; and the bolts have small volumes, so that a large operating space can be provided for subsequent procedures.

A passenger seat for a vehicle, including a frame for being attached to a floor of the vehicle, a fixed backshell attached to the frame, and a seat back attached to the backshell. A seat bottom is attached to the backshell, and a headrest assembly attached to the backshell at a position above the seat back. The headrest assembly includes left and right spaced-apart side wings, each of the side wings comprising a rigid support and a wedge-shaped cushion attached to the rigid support by a pivot. The left and right cushions are each translatable in a direction parallel to the rigid support to selectively increase or decrease the effective width of the headrest assembly by increasing or decreasing the distance between the left and right side wings. The left and right cushions are each mounted for rotation about the pivot for selectively changing the angle of a forward face of the cushion relative to the rigid support to thereby permit selection by a seat occupant of a desired cushion position.

The invention belongs to a seamless steel pipe hot rolling apparatus and solves the technical problems of the prior seamless steel pipe production that the punching process, the secondary punching process and the reeling process need respective production apparatus so that the investment is large. The seamless steel pipe hot rolling apparatus comprises a front stage, a main frame, a first section of a back stage and a second section of the back stage, wherein main transmission is connected with a roller in the main frame through a universal coupling, a big end wedged cushion block is movably arranged between the outer side end of a big end rolling shaft block of the roller and an L-shaped roll-box so as to realize the adjustment of the rolling angle of the roller, a worm speed reducer, a commutator and a driving motor connected in sequence are arranged at the left side of the main frame stander of the main frame, the driving motor pushes the roll-box to move through the worm speed reducer and a guide screw to realize the slight adjustment of the rolling angle a, and a big end lower wedged cushion block and a small end lower wedged cushion block are arranged between the lower ends of the big end roller shaft block and the small end roller shaft block of the roller and the L-shaped roll-box to realize the adjustment of a feeding angle of the roller. The seamless steel pipe hot rolling apparatus realizes that one apparatus is multifunctional.

The invention relates to the vehicle linking method and device. The linking hinge is made by female linking hinge base, male linking hinge base, traction pin, semispherical cushion, concave spherical cushion plate and wedge cushion plate, with the male and female linking hinge base fixed on two adjacent vehicle end, single hinge head of the male linking hinge base set to the dual hinge head of the female linking hinge base, with gap between the single and dual hinge head, allowing vertical inter leaping, with the male and female linking hinge base connected through round cylinder traction pin. The hole of the male lining hinge base is spherical, semi spherical cushion between the traction pin and the male linking hinge base, whose front end is boss spherical matching with concave spherical cushion plate, adding wedge cushion plate allowing it linking seamless being universal rotating ball joint.

The invention discloses a drilling and milling head. The drilling and milling head is arranged on the front end face of a moving disk of a tube cutter through a bottom plate; two parallel linear guide rails are fixedly arranged on the bottom plate; a box is fixedly arranged on the linear guide rails; a screw is arranged on the bottom plate through a supporting seat, and forms a screw-nut pair with the box; the box can move along the linear guide rails under the drive of the screw; a hydraulic motor is fixedly arranged on the back end face of the box through a square flange; the motor shaft extends into a cylindrical hole at the back end of a main shaft, and is connected with the cylindrical hole through a key; the main shaft is in a single-pivot bidirectional fixation formation; a cutter is connected with a collet into a whole; a wedge cushion block is arranged on the moving disk of the tube cutter; a drilling and milling head power device assembly is fixedly arranged on the wedge cushion block, so that the angle of inclination of the drilling and milling head power device assembly is changed, the cutter is inclined in the milling process, a welding groove is directly formed on the end face of a pipeline in the process of cutting the pipeline, and tube cutting and groove formation are integrated. The drilling and milling head is simple in structure and easy to implement.

The invention relates to a supporting device capable of controlling the slow descent of an abutment approach slab. The technical problem about staggering caused by the limited capacity of slow descent of the approach slab is mainly solved. According to the technical scheme, the supporting device capable of controlling the slow descent of the abutment approach slab comprises a upright supporting column connected with the approach slab, a protective box, a positioning ring, a wedge cushion block, slow descent control mechanisms and ropes; the positioning ring is arranged in the middle of an inner cavity of the protective box and connected with the two side walls of the inner cavity of the protective box through connecting rods, the wedge cushion block is arranged on the lower portion of the inner cavity of the protective box, and the bottom of the wedge cushion block is located in a sliding groove in the protective box. The bottom of the upright supporting column makes direct contact with the oblique plane of the wedge cushion block through the positioning ring, the upper end of the upright supporting column penetrates through a column hole in a panel on the protective box, the side faces of the wedge cushion block are connected with gear shafts of the slow descent control mechanisms through the ropes respectively, and the slow descent control mechanisms are arranged on the two sides on the upper portion of the protective box respectively. The supporting device has the advantages that the overall bearing capacity is high, the deformation is small, the applicability is high, engineering materials are saved, and construction and maintenance are easy.

The invention relates to a height-adjustable cushion block. The height-adjustable cushion block comprises two wedge-shaped cushion block bodies which can be attached in a sliding mode, each wedge-shaped cushion block body comprises a steel plate and wedge-shaped channel steel which are fixedly connected, each wedge-shaped channel steel comprises an inclined face and a supporting face, the inclinedfaces are fixedly connected with the steel plates, the faces, away from the wedge-shaped channel steels, of the steel plates are used for supporting objects, the longer faces, away from the inclinedfaces, of the wedge-shaped channel steel are arranged to be supporting faces, and the supporting faces of the two wedge-shaped channel steel abut against each other to adjust the height of the cushionblock bodies. The height of the wedge-shaped cushion block bodies are flexibly adjusted on the basis of the height of a disengaging point by attaching the two wedge-shaped cushion block bodies in analigned sliding mode, so that the wedge-shaped cushion block bodies are tightly attached to a concrete beam, and the stress strength of the cushion block is guaranteed.

The invention discloses a portable house foundation connecting device, and relates to the technical field of manufacturing of portable houses. The portable house foundation connecting device comprises a groove-shaped steel beam arranged on a ground beam; a movable wall plate is arranged in the groove-shaped steel beam; a cushion block with a water accumulating tank is arranged between the inner bottom surface of the groove-shaped steel beam and the movable wall plate; a wedge part with a working inclined surface is arranged on one side edge, near the groove-shaped steel beam, of the cushion block; multiple wedged cushions are arranged between a working inclined surface of the wedge part and the movable wall plate; the wedged cushions are fixed on the cushion block through studs and nuts; and a water outlet pipe communicated with the water accumulating tank of the cushion block is arranged on the ground beam. Compared with the prior art, the portable house foundation connecting device can solve the problem of weak firmness in the connecting place between walls of the portable house and the ground beam.

The invention relates to a bidirectional wedge-shaped sealing structure, which is suitable for sealing between a valve seat and a valve body and comprises a valve seat sealing ring and wedge-shaped pads; the valve seat sealing ring is annular, opening structures are formed in the two directions of the valve seat sealing ring, and the sizes of the opening structures are gradually reduced in a direction from the two sides of the valve seat sealing ring to the middle of the valve seat sealing ring; the wedge-shaped pads are annular, one end of each wedge-shaped pad is a stretching-in end matched with the opening structure, the other end of each wedge-shaped pad is a fixed end and is suitable for being attached to the valve body, the valve seat and an installation structure between the valve body and the valve seat, and the two wedge-shaped pads stretch into the opening structure from one side of the valve seat sealing ring respectively. According to the valve seat sealing ring, the extending end of the wedge-shaped pad extends into the opening structure, and the valve body, the valve seat and the installation structure between the valve body and the valve seat are attached, so that the valve seat sealing ring can bear larger extrusion force, the deformation quantity is larger, sealing can be easily conducted in a severe or extreme use environment, and it can be guaranteed that the valve seat sealing ring has a good sealing effect.

The invention provides a wedge-shaped prestressed tendon low-retraction anchoring device and a using method. The wedge-shaped prestressed tendon low-retraction anchoring device comprises a low-retraction anchor plate, a clamping piece, a wedge-shaped base plate, an anchor base plate and a spiral rib, wherein the wedge-shaped base plate is installed between the low-retraction anchor plate and the anchor base plate. The wedge-shaped prestressed tendon low-retraction anchoring device has the beneficial effect that the problem that a flat anchorage device cannot realize low retraction and tensionis particularly solved. The structure is simple and reasonable; various strength requirements can be met, not only can the high-strength requirement of bridge design be met, but also the retraction amount of the anchorage device can be effectively controlled within 1 mm by pushing the wedge-shaped base plate (compensation gap) during secondary tensioning through the matched use of the inclined surface of the wedge-shaped base plate mounted between the low-retraction anchor plate and the anchor base plate; and the operation is simple and convenient.

The invention discloses a grouting anchor rod cable combined beam for advanced supporting of deep broken surrounding rock and a supporting method. Square protective plates are fixed to the two ends ofa steel beam respectively, anchor cable holes are formed in the center of the steel beam and the centers of the protective plates, and the hole diameter is larger than the diameter of anchor cables;four anchor rod holes are formed in the protective plates, each anchor rod hole corresponds to one wedge-shaped cushion block, the plane of each wedge-shaped cushion block is tightly attached to the protective plates, the arc-shaped portions of four trays face the centers of the protective plates, grouting anchor rods sequentially penetrate through the trays and the protective plates and are fixedin a roof rock stratum through anchoring agents, and the free ends of the anchor rods apply pre-tightening force through nuts; and the anchor cables penetrate through the anchor cable holes and are fixed in an overlying stable rock stratum through the anchoring agents, and the free ends of the anchor cables are fixed through a rigging. According to the grouting anchor rod cable combined beam foradvanced supporting of deep broken surrounding rock and the supporting method, the shallow part and the deep part of a mining roadway are sequentially grouted and constructed by utilizing the combinedbeam, so that graded progressive reinforcement of the surrounding rock of the mining roadway from shallow to deep and from outside to inside is realized, and the control and maintenance of the miningroadway under the conditions of weak and broken roofs are facilitated.

The invention discloses a method and a device for automatically adjusting a blade clearance of a plate shearing machine. The method comprises the following steps that an elastic rolling wheel is arranged on a front panel of the plate shearing machine to push against an upper knife rest, so that the upper knife rest is tightly clung to a back support; meanwhile, a wedge-shaped cushion plate is arranged between the upper knife rest and the back support; the wedge-shaped cushion plate is driven by an adjusting motor to slide between the back support and the upper knife rest, so that stepless regulation of the blade clearance delta of the plate shearing machine is realized. The device is simple in structure, easy to machine, high in precision, good in stability, not easy to deform, low in abrasion and lubrication-free; the defects that a guide rail is required to be lubricated to slide, a rolling guide rail is not easy to machine, the precision is relatively poor, lubrication is required, and deformation is easy to cause are overcome; the method and the device are suitable for adjusting the blade clearance of the plate shearing machine and can also be used for adjusting the precision of small strokes of the mechanisms of other mechanical devices.

The invention belongs to the technical field of aviation, and discloses an aircraft foot control mechanism assembling method. A process separation surface is designed through a rotating rocker arm anda pedal stand column, the problem of assembling error accumulation between the rotating rocker arm and the pedal stand column is compensated by adjusting the length of an adjustable connector on a rotating pull rod, the adjusting period is greatly shortened, the adjusting time is greatly shortened, and the adjusting efficiency is improved; the wedge-shaped cushion block is added to the rotating rocker arm, so that the adjusting efficiency is greatly improved; through installation and adjustment of the pedal stand column and the foot control fixing support, the axial distance of the structureis guaranteed, the problem that secondary or multiple adjustment of the system is caused by rotation of assemblies such as the pedal stand column around a point is solved, and the adjustment efficiency is greatly improved. In comparison before and after the method is applied, the general adjustment and assembly period can be shortened, and the installation and adjustment efficiency of the foot control mechanism is greatly improved.

The invention discloses a clamping mechanism for folded work pieces. The clamping mechanism comprises a base, an upper clamp body, a lower clamp body and an upper positioning plate. The lower clamp body comprises two side plates and one top plate, wherein a lower through hole is formed in the center of the top plate, one side of the top plate is connected with the upper end of one of the two side plates, and a wedged cushion block is arranged between the other side of the top plate and the end of the other side plate. A groove is formed in the center of the upper portion of the top plate, the upper positioning plate is located in the groove, an upper through hole communicated with the lower through hole is formed in the center of the upper positioning plate, and a fixed bolt is arranged between the upper positioning plate and the top plate. The upper clamp body comprises a U-shaped slot and an elastic pressing plate; work pieces penetrate through the lower through hole, the upper through hole and the center of the U-shaped slot sequentially from bottom to top; the elastic pressing plate is arranged in the U-shaped slot. The clamping mechanism for folded work pieces overcomes defects of the existing clamping process of the folded work pieces of poor clamping effect; can clamp tight the folded work pieces through one clamping device and has a good clamping effect.

The invention relates to a circular section pressure pipe annular anti-throwing limiting device and a method thereof. The device comprises an annular sleeve; the annular sleeve comprises an inner ringand an outer ring; the outer ring sleeves the inner ring; a gap between the inner ring and the outer ring forms an annular cavity; a lap of flattening energy absorption columns is arranged in the annular cavity; the flattening energy absorption columns are tightly bonded on the wall of the annular cavity; lengthening energy absorption rods are arranged between the adjacent flattening energy absorption columns; one ends of the lengthening energy absorption rods are fixed with the inner ring, and the other ends are fixed with the outer ring; first annular protecting plates are arranged at two axial ends of the inner ring; second annular protecting plates are arranged at two axial ends of the outer ring; an angle frame connected with the outer ring is arranged in a cavity between the outer ring of the annular sleeve and a building bearing structure; and a gap among the outer ring, the angle frame and the building bearing structure is filled with a wedged cushion plate set. Through the device, when pressure pipes are thrown in any direction, the throwing power energy can be absorbed by plastic deformation of part of the flattening energy absorption columns and the lengthening energy absorption rods.

The invention relates to an insert type metal carrier unit for exhaust after-treatment, and is characterized in that two gauze screens or sinter felt filter pieces A and B with equal lengths and equal widths are adopted; the length of each long felt filter piece is rightly N times of the width thereof; beginning from one end, mutual overlapping is vertically carried out, A1 is at the upper part, B1 is at the lower part, and the A1 and the B1 at the beginning end are firstly welded together by using electric resistance welding or pint welding; then, each filter piece is folded with 180 degrees, two filter pieces are intersected and folded vertically till the other end Ai and Bi are overlapped; an oil hydraulic press is statically pressed to form an accordion-shaped assembly with inserted filter pieces mutually; the Ai and B1 of the assembly are overlapped, and then the Ai and B1 are welded together by using electric resistance welding or pint welding; the center and both ends are fixed by using a central spindle and a retainer ring; therefore, the insert type carrier unit is formed; in this way, a plurality of uniformly distributed wedge cushion spaces are distributed at an entrance end or an exit end so that the back pressure is reduced and the replacement and maintenance interval is prolonged under the condition that the filter effect is not reduced; and therefore, as an after-treatment carrier, the product an be used as a carrier of DOC, POC, DPF and SCR, and has certain practical meaning and higher use value.

The invention provides a surrounding type sliding seat and square ram stabilizing structure and a mounting method thereof.The structure comprises a sliding seat and a square ram, the sliding seat is concave, guide rails are arranged on the two sides of the square ram, each guide rail comprises an inner side guide rail and an outer side guide rail, sliding blocks are arranged on the guide rails, and the two concave side faces of the sliding seat are a first mounting face and a second mounting face correspondingly; the plane installation seat of the first installation face is fixedly connected with the sliding blocks, wedge-shaped base plates are connected between the wedge installation seats of the second installation face and the sliding blocks in an inserted mode, the wedge installation seats, the wedge-shaped base plates and the sliding blocks are fixedly connected through bolts, bearing devices are arranged on the front end faces of the sliding blocks arranged on the inner side guide rails, and pressing plates are arranged on the front end faces of the sliding blocks arranged on the outer side guide rails. By the adoption of the structure, the square ram can be prevented from shaking forwards, backwards, leftwards and rightwards when running on the sliding base along the Z axis, and the machining precision of a machine tool is improved.

The invention discloses an inflatable rubber exsanguination blocker which comprises a rubber blocking ring and a wedge cushion. An inflation valve is arranged on the rubber blocking ring. Compared with existing products, the inflatable rubber exsanguination blocker has the advantages that the problem of incapability of meeting aseptic requirements of surgery and simultaneously effectively controlling blocking pressures in the prior art can be solved; effects of exsanguination bands and effects of blocking bands are integrated with one another, accordingly, limb exsanguination under aseptic requirements during surgery can be facilitated, and blocking effects under aseptic conditions can be realized; the inflatable rubber exsanguination blocker is easy to operate, the time and labor can be saved, and blocking pressures can be effectively controlled as needed.

The invention discloses a pressing method and device for wedge-shaped sole timbers on a docking block. The pressing method comprises the following steps that firstly, the two wedge-shaped sole timbersare stacked up and down and then placed on the docking block; secondly, scale marks in the vertical direction are drawn on the two wedge-shaped sole timbers respectively; thirdly, pressing cushion blocks are placed at the two ends of the wedge-shaped sole timber, the two sides of the pressing cushion blocks at the two ends are fixed through T-shaped baskets, and a hydraulic oil cylinder is placedbetween one pressing cushion block and the wedge-shaped sole timber; fourthly, the T-shaped flower basket is adjusted to fix the hydraulic oil cylinder between the pressing cushion block and the wedge-shaped sole timber; and fifthly, the hydraulic oil cylinder works, the wedge-shaped sole timbers are pushed till the relative positions of the scale marks of the upper wedge-shaped sole timbers andthe lower wedge-shaped sole timbers do not move any more, and wedge-shaped sole timbers are pressed. According to the wedge-shaped sole timber pressing device, a method of pressing wedge-shaped sole timber by knocking an iron hammer manually is replaced, and the hydraulic oil cylinder is used for pressing, so that manpower and material resources are saved, the operation safety is improved, and theoperation efficiency and the pressing quality of the wedge-shaped sole timber are improved.

Embodiments of the present invention provide a method and device for measuring the longitudinal center of gravity of a coaxial helicopter, wherein the method can directly use a horizontal center of gravity measurement tool or three or more platform scales to measure the horizontal center of gravity, so as to calculate the longitudinal center of the coaxial helicopter. Compared with the prior art, the center of gravity does not require a wedge-shaped spacer, which saves the complicated work of installing and leveling the wedge-shaped spacer, and reduces the workload of preparation. Moreover, based on the relatively accurate horizontal center of gravity, the obtained longitudinal center of gravity is relatively accurate. The further determined longitudinal center of gravity of the coaxial helicopter is more accurate. In this way, on the basis that the horizontal center of gravity is relatively accurate, the accuracy of the measured longitudinal center of gravity is improved, and the larger error that may be introduced by the longitudinal center of gravity compared with the prior art is reduced.

The invention discloses a transformer substation inspection robot transferring and lifting device which comprises a fixed platform, a lifting system, a base and a moving system, an inspection robot limiting device is arranged on the fixed platform, a wedge-shaped pad is detachably connected to the front end face of the fixed platform, the movable end of the lifting system is connected with the lower end of the fixed platform, the fixed end of the movable end of the lifting system is connected with the base, and the moving system is arranged below the base. According to the transformer substation inspection robot transferring and lifting device, loading and unloading work of a transformer substation inspection robot on a transport vehicle can be safely and efficiently achieved, the transport efficiency is improved, the work intensity of workers is reduced, and unsafe factors of the transformer substation inspection robot in the loading and unloading process are effectively eradicated.