34results about How to "Guarantee a fixed position" patented technology

The invention discloses a method and apparatus for mechanical fixation of a dynamic extensometer in a high temperature fatigue test. According to the method, two U-shaped plates with specially-produced V-shaped grooves are fixed on the surface of a fatigue test piece through fastening screws and the front end of the high temperature dynamic extensometer is embedded into the two V-shaped grooves, so sliding of the dynamic extensometer in the process of fatigue testing is avoided. The apparatus is mainly composed of thin plates and the fastening screws, wherein the thin plates are equipped with the specially-produced V-shaped grooves. The apparatus is simple in structure and easy in processing. According to the invention, on the basis that the surface morphology of the fatigue test piece is not changed, sliding of the dynamic extensometer in the process of high temperature fatigue testing is effectively avoided, deformation of the test piece in the process of fatigue testing is accurately measured, and smooth implementation of fatigue testing is guaranteed; and the apparatus has the characteristics of good versatility, simple operation, easiness in processing and repeated usability.

A pumping / nursing bra provided with elastic loops on either side of the shoulder straps to hook around the breast shield to ensure that the breast shield remains in place while pumping. Additionally, the present invention includes a strap designed to encircle a woman's neck and attach to the top line of the pumping / nursing bra to add another layer of security.

The invention relates to an electrical machine (100) for starting an internal combustion machine. The electrical machine has at least one bearing (49) which has a bearing support (51) which can be inserted in the bearing for movably bearing a lever (44). The lever is coupled with a relay armature (42) and a free wheel mechanism (33) of a starter pinion (35). At least one compensating element (1, 2) is arranged for clearance-free arrangement of the bearing support (51) in the bearing (49). The invention also relates to a method for manufacturing the electrical machine (100), and the method comprises a step of installing the bearing support (51) in the bearing (49), wherein the bearing support (51) is arranged in the bearing (49) in a clearance-free manner through the at least one compensating element (1, 2).

The invention discloses a high-stability optical fiber laser comprising a beam combiner arranged in a resonant cavity. The first conical section of the pumped fiber and the coupling region on the signal fiber are fused and coupled to form the beam combiner. The gain fiber in the resonant cavity absorbs the pump light transmitted by the pumped fiber into the resonant cavity through the beam combiner so as to form laser to be outputted. The beam combiner is arranged in the resonant cavity so that the excessively high power pump light can be prevented from being directly injected into the fiber grating, the stability of the laser can be enhanced and the single resonant cavity laser is enabled to output the laser of higher power. Compared with the end surface pump technology, the pump fiber and the side surface of the signal fiber are fused and coupled and the signal insertion loss is almost zero so that the pump efficiency can be greatly enhanced, the heat generated in coupling can be significantly reduced, the optical-to-optical conversion efficiency of the laser can be enhanced, high power output of the optical fiber laser can be guaranteed and the stability of the optical fiber laser can be further enhanced.

The invention discloses a hand-operated window opener. The window opener is connected with a window frame and comprises a shell, a telescopic rack push rod and a rocker; the rocker is in transmission connection with the rack push rod through a transmission mechanism, and the transmission mechanism comprises a screw rod portion arranged on the rocker and a gear a in transmission connection with the screw rod portion; the gear a is connected with the rack push rod, one end of the rack push rod is connected with a window sash capable of being opened and closed, and the rear end of the rack push rod is connected with a gear b; a hand crank rotates to drive an internal thread to transmit, extension and shrinkage motion of a chain is achieved, the chain can control the opening angle and ensure the fixing position, and finally the aim of conveniently opening and closing a window is achieved; on the basis of the thread transmission and chain motion mechanical principle, the window sash is pushed in a hand-operated manner, the aim of facilitating window opening is achieved, the window opener is particularly applied to opening of the window which is inconveniently opened and closed by the old, and meanwhile the opening angle can be controlled, and locking is ensured.

The invention relates to an extension-type bed with movable castors. The extension-type bed with the movable castors comprises a main bed body (9) and an extension-type auxiliary bed body (8). An auxiliary bed body (8) drive device is arranged in the main bed body (9). Therefore, when the auxiliary bed body (8) stretches out, a bed body can be widened, and when the auxiliary bed body (8) is retracted into the main bed body (9), the bed body is restored to the original size. Therefore, an existing space can be enlarged under the situation with the need for adding a bed, and meanwhile, the auxiliary bed body (8) can be ensured to be stored in the main bed body (9) under the situation without the need for adding the bed, so that the demand is met while the space is effectively saved; and the movable castors (21) are arranged on four feet of the main bed body (9), so that the bed can move conveniently, and an indoor space can be reasonably planned favorable.

An extensible bed comprises a main bed body (9) and an extensible auxiliary bed body (8), wherein an auxiliary bed body (8) driving device is arranged in the main bed body (9). Therefore, when the auxiliary bed body (8) extends out, the bed body can be widened; when the auxiliary bed body (8) contracts into the main bed body (9), the bed body is recovered to original size. Thus, existing space can be enlarged under the situation that bed increase is needed, meanwhile it can be ensured that the auxiliary bed body (8) is stored in the main bed body (9) under the situation that bed increase is not needed, and space is effectively saved while the demand is met.

The invention relates to a stretchable bed with protective fences. The stretchable bed comprises a main bed body (9) and a stretchable auxiliary bed body (8), wherein a driving device for the auxiliary bed body (8) is arranged in the main bed body (9); when the auxiliary bed body (8) stretches out, the bed body is widened; when the auxiliary bed body (8) contracts into the main bed body (9), the bed body recovers to the original size; foldable protective fences are arranged on front and rear surfaces and rear side walls of the auxiliary bed body (8). Thus, under the condition of requiring bed addition, the present space can be expanded; the auxiliary bed body is specially suitable for being used as a bed for children; the auxiliary bed body (8) can be stored in the main bed body (9) under the condition of no bed addition, so that the requirement is met while the space is effectively saved.

The invention relates to a trachea cannula convenient to tooth combination and fixation. The device comprises a through pipe, an airbag pipe, a limiting sleeve, a movable frame, a movable block, a rubber clamp and a sleeve rod, the limiting sleeve is inserted into the outer wall of the circumference of the through pipe, the left side of the limiting sleeve is fixedly connected to the movable frame, sliding grooves are formed in the left side wall and the right side wall of an inner cavity of the movable frame, and a main push plate and an auxiliary push plate which correspond to each other aremovably connected into the sliding grooves and the movable frame. According to the trachea cannula convenient to tooth combination and fixation, the limiting sleeve is combined on the through pipe, apush frame is movably connected into the limiting sleeve through a bearing, and two ends of the push frame are controlled by the push plates. In the opening and closing process, the height of the movable block at the tail end of the push frame is changed, the movable block can carry a tooth sleeve to be released out of the grooves, the combined rubber clamp is used for sleeving and supporting upper teeth and lower teeth, and the push plates are fixed to the sleeve rod at a determined opening angle in a mode of rotating a sleeve rod nut. The trachea cannula can fix a through pipe, and guarantee smoothness.

An extensible bed comprises a main bed body (9) and an extensible auxiliary bed body (8), wherein an auxiliary bed body (8) driving device is arranged in the main bed body (9). Therefore, when the auxiliary bed body (8) extends out, the bed body can be widened; when the auxiliary bed body (8) contracts into the main bed body (9), the bed body is recovered to original size. Thus, existing space can be enlarged under the situation that bed increase is needed, meanwhile it can be ensured that the auxiliary bed body (8) is stored in the main bed body (9) under the situation that bed increase is not needed, and space is effectively saved while the demand is met.

The invention relates to a plug of wire terminal, which arranges first and second plugs at the frame of heat radiator. Wherein, the first plug is connected to the wire of motor stator of heat radiator and fixed on then frame; the second plug is connected to the connecting wire with clamping pins around; the part of heat radiator relative to the clamping pins has clamping returning holes fixing the clamping pins. The invention can confirm the fixing position of second plug, even at high-frequency vibration, and via the quick detachment of clamping returning holes; the second plug can quickly detach, to convert variable wires.

The invention discloses a nodular cast iron steering part which comprises a shell. The shell is provided with a first steering tube and a second steering tube, the first steering tube is provided with a first connecting hole, the second steering tube is provided with a second connecting hole, the first connecting hole is communicated with the second connecting hole, the inner wall of the first steering tube is provided with a first thread, the second steering tube is provided with a second thread, the shell is additionally provided with a fixing tube, the interior of the fixing tube is provided with a fixing thread, the first steering tube is provided with a first bolt hole and multiple second bolt holes, the second steering tube is provided with multiple third bolt holes, the fixing tube is provided with a fourth bolt hole, the fixing tube is used for being connected with an external fixed device, and a baffle ring is additionally arranged on the inner wall of the first steering tube. The nodular cast iron steering part has the advantages of being simple in structure, convenient to install, high in operation efficiency, firm in fixation and capable of being connected with different components.

The invention discloses a hand-operated window opener. The window opener is connected with a window frame and comprises a shell, a telescopic rack push rod and a rocker; the rocker is in transmission connection with the rack push rod through a transmission mechanism, and the transmission mechanism comprises a screw rod portion arranged on the rocker and a gear a in transmission connection with the screw rod portion; the gear a is connected with the rack push rod, one end of the rack push rod is connected with a window sash capable of being opened and closed, and the rear end of the rack push rod is connected with a gear b; a hand crank rotates to drive an internal thread to transmit, extension and shrinkage motion of a chain is achieved, the chain can control the opening angle and ensure the fixing position, and finally the aim of conveniently opening and closing a window is achieved; on the basis of the thread transmission and chain motion mechanical principle, the window sash is pushed in a hand-operated manner, the aim of facilitating window opening is achieved, the window opener is particularly applied to opening of the window which is inconveniently opened and closed by the old, and meanwhile the opening angle can be controlled, and locking is ensured.

The invention relates to the technical field of new energy automobile production, and discloses a part clamping device for new energy automobile production. The part clamping device for new energy automobile production comprises a base, wherein a first fixed seat is fixedly connected to the upper surface of one end of the base, a first sliding seat is slidably connected to the upper surface of the other end of the base, and the first fixed seat is rotatably connected with a fixed connecting rod; and the first sliding seat is rotationally connected with a sliding connecting rod, the fixed connecting rod is rotationally connected with the sliding connecting rod, a left locking block is fixedly connected to the side wall of the fixed connecting rod, and a right locking block is fixedly connected to the side wall of the sliding connecting rod. By arranging the base, the first fixed seat, the first sliding seat, the fixed connecting rod, the sliding connecting rod, the workbench, a sliding groove, a second fixed seat and a second sliding seat, a vehicle frame can be flexibly fixed, a proper fixing position can be selected, the production position can be better kept in the following working procedures, and meanwhile the position of the workbench can be adjusted.

The invention provides a packing method for water-soluble chalks and a corresponding molding and packing article thereof, and belongs to the field of teaching equipment. By improving a mold and designing a packing platform and special paper for packing, the packed water-soluble chalk is provided, and the use comfort level of the water-soluble chalks is improved.

The invention relates to the technical field of traveling data recorders, and discloses a quick disassembly and assembly type vehicle networking vehicle traveling data recorder which comprises a shell, a recording mechanism is arranged in the shell, a mounting mechanism is fixedly connected to the upper surface of the shell, a supporting column is arranged on the mounting mechanism, and a fixing plate is fixedly connected to the top end of the supporting column. By arranging the recording mechanism, when the recording mechanism is damaged and needs to be overhauled, a screwing block is shifted to drive a gear to rotate, the gear rotates to drive a rack to move downwards, and under the action of a T-shaped block and a T-shaped groove, the rack can stably move along a track and can drive a fixed box to move away from a shell; the spring rod stretches through self elasticity to push the cover plate to move leftwards to leave the fixing box, meanwhile, the cover plate drives the mounting plate to move through the supporting rod, the mounting plate drives the circuit to move to leave the fixing box, meanwhile, the illuminating lamp is controlled to be turned on, the environment on the circuit board can be illuminated, and workers can conveniently overhaul the circuit board.

The invention discloses an embedded part for a refrigerator, which comprises a body and grooves. A mounting space with an open rear side is defined in the body, a through hole is formed on the front wall of the body, the grooves are disposed on side walls of the body, and a first flange is formed at the edge of one side, which faces to the inner side of the body, of each groove. The embedded part in an embodiment of the invention is fixed firmly. In addition, punched holes on the refrigerator are omitted, cost is saved, the through hole brings convenience for fixing a screw, and the embedded part is simple in structure, convenient in installation and high in assembly efficiency. The invention further discloses the refrigerator comprising the embedded part.

The invention discloses a novel fertilization mechanism for an intelligent agricultural corn field, and particularly relates to the field of agricultural machinery. The novel fertilization mechanism comprises a mounting frame, a supporting column is fixedly mounted at the top of the mounting frame, a mounting frame is mounted at the top of the supporting column, a mixing box is fixed to one side of the mounting frame, and a connecting frame is connected to one side of the mixing box. A mixing motor is fixedly connected to one side of the connecting frame, an adjusting cavity is welded to the bottom of the mixing box, and a discharging opening is formed in the bottom of the adjusting cavity. According to the scheme, a silicon steel strip is fixedly installed in a soft iron block, a conductive winding is arranged on the surface of the silicon steel strip, the conductive winding is electrically connected with a storage battery, the storage battery supplies power to the conductive winding, and when the mechanism can jolt during moving, the discharging opening is closed through the soft iron block, so that chemical fertilizer mixed materials in the mixing box are prevented from overflowing. During working, power supply of the storage battery to the conductive winding is cut off, the gap between the soft iron block and the discharging opening can be adjusted bidirectionally, and the mechanism is suitable for material standards of different fields.

The invention relates to a stretchable bed with protective fences. The stretchable bed comprises a main bed body (9) and a stretchable auxiliary bed body (8), wherein a driving device for the auxiliary bed body (8) is arranged in the main bed body (9); when the auxiliary bed body (8) stretches out, the bed body is widened; when the auxiliary bed body (8) contracts into the main bed body (9), the bed body recovers to the original size; foldable protective fences are arranged on front and rear surfaces and rear side walls of the auxiliary bed body (8). Thus, under the condition of requiring bed addition, the present space can be expanded; the auxiliary bed body is specially suitable for being used as a bed for children; the auxiliary bed body (8) can be stored in the main bed body (9) under the condition of no bed addition, so that the requirement is met while the space is effectively saved.

The invention relates to the technical field of vibrating diaphragms, in particular to a silica gel vibrating diaphragm adhesive tape and a preparation method thereof. The preparation method of the silica gel vibrating diaphragm adhesive tape comprises the steps of silicon material preparation, mixing and glue forming, blowing and pressing mold closing and rolling shaping; a mold closing machine used in blowing and pressing mold closing comprises a rack, a pressing mold, a film rolling column and a controller; and due to the production mode of injection molding of the silica gel vibrating diaphragm, the thickness of a diaphragm layer of the silica gel vibrating diaphragm is limited, meanwhile, the silica gel vibrating diaphragm produced through injection molding is interfered by the molding process of a mold cavity, internal stress which is not completely eliminated is achieved, and then the performance effect of the silica gel vibrating diaphragm in use is reduced; and therefore, themolding process of the vibrating diaphragm is sequentially performed on the blow-molded and stretched silica gel diaphragm through the pressing mold arranged on the mold closing machine in cooperationwith the protrusions on the diaphragm rolling columns, the molding thickness of the silica gel vibrating diaphragm is reduced, meanwhile, the blow-molded columnar silica gel diaphragm is divided intofour equal parts through the ribs, the production amount of the silica gel vibrating diaphragm is increased, and the preparation method of the silica gel vibrating diaphragm adhesive tape is improved.

The invention relates to the technical field of vehicle maintenance, in particular to a maintenance plate system capable of changing form along with working conditions. The maintenance plate system involves a bottom plate frame and a plurality of wheels arranged below the bottom plate frame, wherein the wheels are vertically and slidably connected to the bottom plate frame through wheel carriers; sliding grooves used for containing the wheel carriers and the wheels are formed in the lower surface of the bottom plate frame, and the wheel carriers are slidably connected into the sliding grooves; and driving devices used for driving the wheel carriers to slide out of the sliding grooves are arranged on the bottom plate frame, the plurality of driving devices corresponding to the wheels are connected with one synchronizing device, and the synchronizing device synchronizes the plurality of driving devices to synchronously drive the wheel carriers to move in the sliding grooves. The maintenance plate system capable of changing form along with the working conditions has the effect of fixing the bottom plate frame in the maintenance process.

The invention relates to a welding workbench. The welding workbench comprises a fixing frame and an overturning frame rotationally fixed to the fixing frame, the overturning frame is connected with a driver with a self-locking function through a linkage mechanism, the linkage mechanism comprises a first transmission part and a second transmission part, the first transmission part and the overturning frame are coaxially and rotationally fixed, the first transmission part is provided with multiple linkage grooves which are annularly and evenly arranged at intervals and used for allowing the second transmission part to stretch inside, the linkage grooves are arranged in the radial direction of the first transmission part and penetrate through the circumferential outer wall of the first transmission part, and the second transmission part can stretch into the linkage grooves or be disengaged from the interiors of the linkage grooves under the action of the driver. The welding workbench has the advantages that the positioning and fixing effects on the overturning frame are better, the subsequent welding and fixing effects of workpieces can be better guaranteed, the workpieces are more convenient to assemble and weld, and the production efficiency can be improved.

The invention relates to a valve leaflet capturing device and system and an artificial heart valve.The valve leaflet capturing device comprises a capturing ring, the capturing ring is spiral and can be wound around a mitral valve / tricuspid valve chordae tendineae, and the capturing ring comprises a core body, an expansion layer and a friction layer from inside to outside; the core body is used for conforming to the change of the myocardial tissue shape; the expansion layer is made of a hydrophilic expansion material and is used for absorbing liquid and expanding after being in contact with blood; the friction layer is used for inhibiting displacement of the fishing ring relative to the mitral valve / tricuspid valve in the cardiac cycle. The valve leaflet capturing device can be stably matched with an implanted artificial heart valve support, the implanted artificial heart valve support and the implanted artificial heart valve support are stably anchored to a proper position, mutual displacement of the implanted artificial heart valve support and the implanted artificial heart valve support in the cardiac cycle is avoided, and the risk of operation failure is reduced.

The invention discloses a self-adjusting electric power mechanism suite, which specifically comprises a suite pedestal which is provided with an inner cavity installation pedestal body and an internal cavity for installing the suite; and a suite main body, wherein the suite main body is provided with an installation box body and a butt joint base installed above the suite main body, a butt joint cavity is formed in the middle of the butt joint base, a spring buckle is arranged in the butt joint cavity, and heat dissipation grids are arranged on the side of the suite main body, so that the suite at the top can be conveniently installed in the butt joint base, and the positioning and the fixation of the device can be ensured by adopting the spring butt-joint buckle. The invention relates to the technical field of electric power. The self-adjusting electric power mechanism suite solves the problems that the internal heat dissipation effect of external airflow adjustment is poor, external fire behaviors and short circuit of electric power elements cannot be handled, can be used for monitoring internal heat and also can be handled with high temperature of the external fire behaviors, the self-protection capability of the electric power components is improved, and the risk and loss of the fire hazards are reduced.

The invention relates to a transmission for a motor vehicle. The transmission comprises a chain, a drive member assembly driven by the chain, a driven member assembly driven by the chain, at least onechain wheel as part of the drive member assembly or the driven member assembly, and an axially movable member located axially next to the chain wheel. The transmission is characterized in that the chain wheel is supported on the axially movable member by means of a pre-tensioning device. The invention further relates to a motor vehicle.

The invention discloses a tool for detecting a steel die positioning pin of a CRTSIII type track slab. The top of a fixed cylinder base is connected with a top cover; a prismosphere mounting groove is arranged in the center of the upper surface of the top cover; a prismosphere is mounted in the prismosphere moutnign groove; a downward-protruded pressure spring positioning sleeve is arranged in the center of the lower surface of the top cover; a gripping rod for fixing the positing pin, an inverse cone body and the pressure spring are arranged inside the fixed cylinder base; a groove is arranged in the center of the inverse cone body; a pressure spring positioning sleeve is arranged in the groove of the inverse cone body; the upper part of the pressure spring is arranged in the pressure spring positioning sleeve; the lower part of the pressure spring is arranged in the groove of the inverse cone body; a slot hole corresponding to the length of the pressure spring positioning sleeve is arranged on the side wall of the fixed cylinder base; a connecting rod of a hand wheel connecting rod passes through the slot hole and is connected with the upper part of the side wall of the inverse cone body; a gripper at the lower end of the gripping rod surrounds the root part of the positioning pin; and the top end of the gripping rod is connected with the conical surface of the outer side wall of the inverse cone body in the mode of sliding contact. The tool can be used for converting the deviation of the steel die positioning pin of the track slab into the deviation of the center of a prism and has the advantages of simple structure, convenience in installation and accuracy in positioning.