68results about How to "Guaranteed to be fixed and stable" patented technology

The invention discloses a power battery pack assembly structure of an all-electric vehicle. The power battery pack assembly structure comprises a shell; the outer side at the bottom of the shell is symmetrically provided with a battery pack fixing structure connected with a vehicle body floor board; the front part of the shell is positioned below the middle part of a front floor board; the middle part of the shell is positioned below a middle channel of the front floor board; the rear part of the shell is positioned below a middle floor board; the inner side at the bottom of the shell is provided with a battery cooling system; a front battery module is arranged at the front part above the battery cooling system; a rear batter module is arranged at the rear part above the battery cooling system; the front battery module and the rear battery module are respectively provided with battery module fixing structures connected with the battery pack fixing structure; and a battery management unit is arranged between the front battery module and the rear battery module. According to the invention, after a fuel oil tank is not installed on the electric vehicle, available spaces below a rear seat and below a front seat can be utilized fully, and the requirements on ground clearances of a riding space and a battery pack are met. The power battery pack assembly structure provided by the invention is reasonable in structural arrangement, extremely firm in fixation, and convenient to mount and dismount.

A transfacet-pedicle locking screw fixation assembly includes a plurality of pedicle screws each including threads at a distal end and a connecting receptacle at a proximal end. The connecting receptacle is oriented perpendicularly with respect to a longitudinal axis of the pedicle screw. A basic transfacet locking screw including threads at least at a distal end has the distal end engaging the connecting receptacle in one of the pedicle screws. The transfacet locking screw may also be interlocked with another transfacet locking screw.

A position detecting sensor is equipped with a holder capable of accommodating a sensor member therein on which a magnetic sensor is disposed. A connector formed on an end of the holder is connected to a fitting through a connecting bolt. The fitting is disposed by insertion into a sensor groove of a cylinder apparatus, and after insertion of the fitting into the sensor groove, the holder and the fitting are fastened by the connecting bolt, thereby fixing the holder with respect to the cylinder apparatus.

The invention discloses an adjustable multimedia teaching auxiliary device, which comprises a support frame, a storage battery is fixedly connected to the middle position of the inner bottom of the support frame, chute is opened on the bottom of the inner wall on both sides of the support frame, and the inner walls of the two chute A sliding block is movably connected, and a movable plate is fixedly connected between the opposite sides of the two sliding blocks. The invention provides an adjustable multimedia teaching auxiliary device. By setting an electric push rod and universal wheels, it has the advantages of being convenient to move and fix. By setting a buffer device, it has the advantage of shock absorption. By setting a driving motor, a screw rod, The adjustment block and the top plate have the advantage of adjusting the projection height of the multimedia setting, the advantages of adjusting the projection direction of the multimedia equipment by setting the rotating disk and the fixed shaft, and the adjustment of the projection angle of the multimedia equipment by setting the adjustment seat, the pin shaft and the adjustment bolt Advantages, it solves the problem that multimedia equipment is not easy to adjust in teaching.

The invention discloses an unmanned aerial vehicle with telescopic vehicle arms. The unmanned aerial vehicle comprises a vehicle body, a vehicle arm, a guide groove and a rotor wing assembly, whereinthe vehicle arm comprises a first arm rod and a second arm rod, one end of the first arm rod is connected with the vehicle body, a movable fastening shaft is arranged on the first arm rod, a flexiblepad is arranged at one end of the fastening shaft, and a limiting protrusion is arranged on the inner circumferential wall of the first arm rod; the guide groove extending in the axial direction of the second arm rod and is formed in the peripheral wall of the second arm rod, a plurality of limiting grooves are formed in the groove bottom wall of the guide groove and distributed in the length direction of the guide groove at intervals, the second arm rod slidably extends into the first arm rod, and the limiting protrusions are located in the guide groove; the second arm rod slides to enable the limiting protrusion to be matched with one limiting groove, and the fastening shaft moves to enable the flexible pad to abut against the second arm rod to fix the second arm rod. and the rotor wingassembly is arranged at the end, away from the first arm rod, of the second arm rod, and the device can achieve extension and retraction of the vehicle arm.

The invention discloses a metal plate flanging device convenient to adjust a bending angle. The metal plate flanging device convenient to adjust the bending angle comprises an installation seat, wherein fixed blocks are welded to two sides of one end of an outer wall of the bottom part of the installation seat; horizontally arranged installation plates are arranged on outer walls of the bottom parts of the fixed blocks through bolts; hydraulic rods are arranged on one sides, far away from the installation seat, of outer walls of the top parts of the installation plates through bolts; a first installation plate and a second installation plate arranged horizontally are arranged on outer walls of the top parts of the two hydraulic rods through bolts; a horizontally-arranged drive motor is arranged on an outer wall of the top part of the first installation plate through a bolt. According to the metal plate flanging device convenient to adjust the bending angle provided by the invention, after a metal plate penetrates through the bottom parts of connecting rods and is fixed by using a pressing plate and pressing blocks, the drive motor is started to drive the connecting rods to rotate so as to rotate a flanging plate, the flanging plate contacts the metal plate so as to continuously push and bend to realize flanging operation, and the rotation angle of the drive motor can be used for adjusting the rotation angle of the flanging plate, so that the bending angle is adjusted.

The invention discloses a three-leaf type locking bone fracture fixation plate easily improving stability. The three-leaf type locking bone fracture fixation plate comprises a locking main plate and afirst reinforcing groove, a wing plate is connected to the top end of the locking main plate, a locking hole is formed in the locking main plate, a limiting groove which is formed in the inner side of the locking hole is formed in the bottom end of an inserting groove, installing parts are connected to the inner side of the locking hole, inserting rods are installed on the sides of cover plates,the first reinforcing groove, a second reinforcing groove and a third reinforcing groove are separately formed in the locking main plate, and a fixing plate is connected to the inner side of the firstreinforcing groove. According to the three-leaf type locking bone fracture fixation plate easily improving stability, connecting holes are convenient to select so that treatment operation can be conducted conveniently according to detailed injured skeletons, installing, connecting and using are rapidly and stably installed easily, locking is convenient, it is conveniently guaranteed that the locking main plate, the wing plate and a top plate are fixed stably, shifting is easily avoided, and usage for treatment is easy.

The invention discloses a feeding and discharging device for a liquid injection machine. The feeding and discharging device comprises a mounting base. Cylinders arranged vertically are mounted at thefour corners of the outer wall of the top of the mounting base through bolts. The outer walls of the tops of the four cylinders are provided with a fixed plate arranged horizontally through bolts. Theouter wall of the top of the fixed plate is provided with a driving motor arranged vertically through bolts. Limiting tubes arranged vertically are welded to the outer wall of the top of the fixed plate. The outer wall of the top of each limiting tube is provided with an annual limiting groove. The driving motor is located inside the limiting tubes. According to the feeding and discharging device, a battery shell is sleeved through a through slot of a fixed seat; meanwhile, four electric push rods are started to enable four fixing blocks to pres the battery shell, so that the battery shell isfixed to the fixed seat stably and reliably and is not likely to fall off in the feeding and discharging process. The feeding and discharging device is safe and reliable in use, capable of fixing different sizes of lithium battery shells according to the telescopic distance of the electric push rods and wide in application range.

A charging holder for electronic devices is shared for a plurality of electronic devices having different thickness, and is stably fixed even under vibration conditions. The holder has a holder body, a rotation block and a lock unit. A pocket for inserting an electronic device is formed in the holder body. The rotation block is rotated and biased so that a tip portion can protrude inside the pocket, and has a contact terminal which can contact a charging terminal of the electronic device. The lock unit is for locking the upper side of the electronic device to the holder body when the electronic device is pushed into the pocket and rotated. The rotation block is configured so that the lower part of the electronic device can be inserted therein, holds the lower part of the electronic device regardless of the thickness of the electronic device.

A spring leaf and an overrunning clutch provided with the same are provided. The spring leaf is made up of a support strip (3-1), a clamping strip (3-2), and a connection beam (3-3). The support strip (3-1) supports a needle roller in suspension. The connection beam (3-3) connects the support strip (3-1) with the clamping strip (3-2). The main body of the clamping strip (3-2) is a straight strip (3-2-1), either end of which is provided with a V-shaped bended part (3-2-2). The overrunning clutch is provided with a retainer, multiple needle rollers, and multiple spring leaves. Mounting grooves for the spring leaves are respectively disposed at positions, corresponding to each crossbeam, on outer end surfaces of a first and a second annular end edge at both ends of a window hole of the retainer. The bottom of the mounting groove for the spring leaf is V-shaped when cut along an axial direction of the retainer. An inner surface of the straight strip (3-2-1) of the clamping strip (3-2) of the spring leaf is matched with an outer surface of the crossbeam. An inner surface of the V-shaped bended part (3-2-2) of the clamping strip (3-2) is matched with a bottom surface of the mounting groove for the spring leaf. The technical problem of the potential displacement and detachment of the spring leaf during the reciprocation of the existing overrunning clutch at a high rotational speed and high frequency is solved by the invention.

The invention belongs to the technical field of aluminum alloy wheel surface treatment, and particularly relates to a milling tool for carving an aluminum alloy wheel. The milling tool comprises a tool handle and a tool bit connected with the tool handle. A tool nose is arranged at the end, away from the tool handle, of the tool bit and is made from a diamond material. The tool nose is in a semi-circular-truncated-cone shape. The lower bottom face of the tool nose is connected with the tool handle. The diameter of the upper bottom face of the tool nose is 1.0-1.5 mm. By enlarging the tool nose, the carving milling tool provided by the invention is suitable for carving the surface of the aluminum alloy wheel, long in service life and clear in carving codewords, and the tool nose is not liable to be split in the carving process.

The invention provides a fire fighting truck novel cushion, belongs to the machinery technical field, and solves the problems that an existing cushion may obstruct a fireman to get off; the fire fighting truck novel cushion comprises a round plate shape counterweight plate; the top of the counterweight plate is provided with a round connecting plate; the connecting plate and the counterweight plate are coaxially arranged; the bottom end face of the counterweight plate is attached by a round plated rubber pad; the rubber pad and the connecting plate are coaxially arranged; the rubber pad is fixed with the counterweight plate through an accidented connecting structure; the bottom end face center of the connecting plate is provided with a protruding rotary shaft; the rotary shaft and the counterweight plate are axially fixed; a friction mechanism allowing the counterweight plate and the connecting plate to produce friction resistance is arranged between the two; the top end face of the connecting plate is fixedly connected with a housing with a sealed chamber; the housing is made of a flexible material; the chamber is filled with sponge, and forms a round plated shape under the filling state. The fire fighting truck novel cushion can reduce the time needed by the fireman to get off the truck.

The invention provides an automobile support leg detection support frame, which relates to the technical field of automobile accessories. The automobile support leg detection support frame is characterized by comprising a base, a transverse frame, a guide shaft, an ascending and descending frame, a pressure shaft, a pad block and a spring, wherein the guide shaft is fixedly arranged between the base and the two ends of the transverse frame, the ascending and descending frame comprises a guide sleeve sheathed on the guide shaft and a press plate connected onto the guide sleeve, the pressure shaft is arranged above the middle position of the press plate, in addition, the pressure shaft passes through the transverse frame positioned at the upper side, the spring is sheathed on the pressure shaft, the upper side and the lower side of the spring sleeve are respectively connected with the transverse frame and the press plate, and the pad block is arranged above the middle position of the base. The automobile support leg detection support frame has the advantages that the structure is simple, practicability and convenience are realized, the fixation is stable, firm and reliable, the operation is convenient, and the manufacturing cost is low.

The invention relates to a movable acrylic stair mold. The movable acrylic stair mold is characterized in that a plurality of supports are vertically arranged on a base at intervals along the length direction of a stair, a plurality of cross beams are horizontally arranged on the supports in parallel, sliding grooves are formed in the cross beams, a plurality of adjusting seats are arranged on thecross beams, and adjusting bolts are screwed on the adjusting seats; and the adjusting bolts on every two adjacent adjusting seats vertically abut against the outer sides of the two vertical sides ofany L-shaped corner pipe plate, so that the L-shaped corner pipe plates are rotated, stretched and abutted against on the adjusting seats, the distance between the L-shaped corner pipe plates and back push plate members is adjusted, and the distance between any L-shaped corner pipe plate and the corresponding vertical edge of the next L-shaped corner pipe plate is adjusted. The mold has the advantages that the structure is compact and stable, the height of different steps can be met, span stairs can be poured, and the adjustment is convenient and rapid.

The invention discloses a large wind power gear box turnover machine, and relates to the field of wind power machining, the large wind power gear box turnover machine is characterized in that two vertical sliding rails are installed at the top of a base, the two vertical sliding rails are jointly connected with a lifting driving assembly, and the lifting driving assembly is connected with a turnover driving assembly; the overturning driving assembly is connected with a clamping assembly through a length adjusting assembly. By arranging the clamping assembly, the wind power gear box can be clamped and fixed before overturning, the wind power gear box can be further adsorbed and fixed through the two symmetrically-arranged adsorption stabilizing assemblies, stability and firmness are achieved, the situation that the wind power gear box shakes or even falls off and is damaged during overturning is effectively avoided, safety is good, and the wind power gear box can be conveniently and rapidly overturned. Through the arrangement of the overturning driving assembly and the lifting driving assembly, the purposes of lifting and overturning the wind power gear box and putting down the wind power gear box after overturning can be achieved, other equipment such as a crane is not needed, operation is easy and convenient, time and labor are saved, and the machining efficiency is improved.

The invention discloses a clip-shaped pin fixed structure of a caster wheel for dust collectors, which belongs to an auxiliary instrument of a caster wheel for dust collectors. The clip-shaped pin fixed structure comprises a rotating shaft, the rotating shaft is arranged in a shaft hub of the caster wheel for dust collectors, the external lateral end of the rotating shaft is provided with a concentric shaft gear, and a ring groove is formed at the internal lateral end of the rotating shaft; the internal lateral end of the rotating shaft and the ring groove are arranged in a rotating-shaft hole frame of a base; a perforating part passing through a shaft center is arranged on the ring groove; and the insides of the ring groove and the perforating part are respectively bonded with an elastic integral clip-shaped pin. In the invention designed as above, because a perforating part passing through a shaft center is arranged on the ring groove at the internal lateral end of the rotating shaft, and an arc clip part of the clip-shaped pin is embedded in the ring groove by pinning a pin body part of the clip-shaped pin into the perforating part, so that the clip-shaped pin is installed easily and fixed firmly and stably. Therefore, an action that the caster wheel moves to the ring groove end of the rotating shaft is limited, and an action that the rotating shaft and the caster wheel on the rotating shaft drop from the rotating-shaft hole frame of the base is prevented.