97 results about "Spherical recess" patented technology

The utility model particularly relates to a rapid track-on device for track equipment, which comprises a long plate device and a base device, and the base device comprises a base plate arranged at the bottom; the cylindrical supporting legs are vertically arranged on the base plate; the spherical shaft head is arranged at the upper end of the cylindrical supporting leg; the long plate device comprises a supporting plate arranged in the middle; the shaft sleeve is arranged at the bottom of the supporting plate and is provided with a hemispherical concave structure with a downward opening; the two long plates are arranged at the two ends of the supporting plate respectively, the long plates and the supporting plate are arranged in a perpendicular orthogonal relation, the thickness of the long plates is larger than that of the supporting plate, and a height difference is formed between the upper surfaces of the long plates and the upper surface of the supporting plate; and the hemispherical concave structure of the shaft sleeve is movably matched with the spherical shaft head, so that the long plate device is erected on the base device and is movably matched with the base device. The device has the advantages that the device is matched with the width of the steel rail, stable transfer of the device is ensured, and the stability and steering flexibility of the device are enhanced.

This invention discloses a multi-station tooling, belonging to the field of machining tooling and fixture technology. The tooling includes a base, a single cylinder, a movable arm, multiple clamping modules, spherical washers, and limiting components. The single cylinder drives the movable arm to perform overall linear translation. The movable arm has multiple spherical grooves, and each pull core forms a spherical adaptive fit pair with the spherical grooves through the spherical washers. The clamping modules are configured as interchangeable inner support modules or outer clamping modules, allowing switching of working modes on the same base by changing the pull cores and elastic chucks. The spherical adaptive fit pair between the spherical washers and spherical grooves automatically compensates for axial eccentricity and angular errors caused by the interchangeability of the inner support modules and outer clamping modules and assembly deviations. This invention achieves unified high-precision synchronous clamping at multiple stations with a single cylinder and rapid switching between inner support / outer clamping, significantly improving clamping force consistency, machining yield, and changeover efficiency.

The utility model relates to a metal pipe drilling support which is mainly characterized in that a fixing base is made of firm metal, and a spherical groove is formed in the upper portion of the fixing base and used for being matched with a spherical rotating head to rotate so as to adjust the position of a metal pipe; the contact area of the rotating head and the fixing base is increased through the hemispherical protrusions, and stability is improved; the first hoop body and the second hoop body are made of metal materials to form a stable support structure. The hoop body with the I-shaped section enhances rigidity and strength; the anti-skid layer and the anti-skid convex points increase friction force and prevent sliding; fastening holes and bolts are used for fixing the metal pipes, and adaptability of the support is improved. The metal pipe drilling machine is stable in structure, durable and suitable for drilling operation of various metal pipes.

The present invention relates to a brake actuation device (2) for a motor vehicle, comprising a brake booster (1) having a movable actuating rod (3), and an input rod (5) which is connectable to or connected to a brake pedal (6) and coupled to the actuating rod (3) by a ball joint (9) so that the input rod (5) is pivotable relative to the actuating rod (3), wherein the ball joint (9) has a spherical socket (10) and a spherical projection (11) mounted in the spherical socket (10). It is provided that at least one radial recess (17) is formed in the spherical socket (10) in which a radial projection (16) of the spherical projection (11) with a predetermined clearance for limiting the pivoting range of the ball joint (9) is located.

This invention relates to a ball-operated plugging device for downhole pulsating hydraulic fracturing, comprising a main body assembly. A conical valve seat is disposed in the middle of the main body assembly, and an umbrella-shaped valve is slidably connected within the conical valve seat. The umbrella-shaped valve includes a valve head boss and a valve stem. A self-excited oscillation chamber is also provided at the bottom of the conical valve seat. A spring support seat is disposed below the self-excited oscillation chamber, with a central circular hole at the geometric center of the spring support seat. A spring is placed on the spring support seat, and the top of the spring contacts the valve head boss of the umbrella-shaped valve. A through-hole flow channel is provided in the middle of the umbrella-shaped valve, with its upper and lower ends communicating with cavity A and cavity B, respectively. The valve stem of the umbrella-shaped valve passes through the spring, and its bottom is inserted into the central circular hole of the spring support seat. A spherical groove is provided at the top of the umbrella-shaped valve for placing a soluble plugging ball. This invention can adjust the pressure variation of the pulsating fluid at the bottom of the well during construction.

A body position adjusting supporting pad for ophthalmology hospitalized patients comprises a head supporting part, the rear end of the head supporting part is connected with a neck supporting part, the center of the top of the head supporting part is downwards provided with a spherical concave part, and the top of the neck supporting part is downwards provided with an arc-shaped concave part from front to back; the rear end of the head supporting part is upwards connected with a supporting frame, a forehead supporting part is fixed to the front side of the top end of the supporting frame, a rotating sleeve capable of swinging front and back is arranged at the top of the forehead supporting part, an eye applying pad capable of adjusting the relative distance between the eye applying pad and the rotating sleeve is arranged at the tail end of the rotating sleeve, and the eye applying pad is provided with a left bandage and a right bandage. And the head supporting part is provided with a left connecting buckle and a right connecting buckle which are matched with the bandage. The supporting tool effectively solves the problems that an existing supporting tool lacks targeted design, an operation eye is prone to being pressed, the fixing mode is single, and comfort is poor.

The invention relates to an automobile roof integral flanging structure and an automobile roof integral flanging machining method. The automobile roof integral flanging structure comprises a supporting tire mold, a groove is formed in the supporting tire mold, an upper mold is arranged above the supporting tire mold, and a material ejecting mechanism, a heating mechanism and a material pressing mechanism are arranged on the upper mold; the ejection mechanism comprises an insertion plate connected to the upper die, a plurality of notch grooves are formed in the periphery of the insertion plate, and the insertion plate is an elastic steel plate; the heating mechanism comprises a heating air cylinder arranged on the rack, the bottom of a piston rod of the heating air cylinder is fixedly connected with a heating plate, and a circle of protruding edge is fixedly connected to the position, close to the bottom, of the outer side wall of the heating plate, so that a spherical pit is formed in the bent position of the ceiling, stress is released, and stable and uniform-height position folding is achieved. And the folding height is stable and uniform, and the inserting plate plays a role in supporting the product, so that the stability of the flanging process is realized, and the quality of the product is improved. The device has the advantages that deviation of the product folding height is reduced, the product is more stable, and the quality of the formed product is not affected.

The present disclosure relates to a kind of automobile parking lock system and automobile, belong to the technical field of automobile safety device.The automobile parking lock system includes piston assembly, electric control locking assembly and parking assembly;Piston assembly includes piston cylinder, parking piston, piston rod and return spring, piston cylinder has first through hole, the wall surface of first through hole has second through hole, piston rod is slidably connected with first through hole, the side wall of piston rod has semispherical groove, electric control locking assembly includes locking piece, locking piece is slidably connected with second through hole, the end of locking piece close to first through hole has semispherical convex, parking assembly is connected with piston rod.Adopting the present disclosure, the service life of automobile parking lock system can be improved.

The application discloses a rotary drilling rig earth digging structure with a telescopic function, relates to the technical field of rotary drilling rigs, and comprises a rotary drilling rig main machine, a drill rod assembly, a quick-change interface assembly, a switchable drilling rig assembly and a grabbing execution mechanism. The quick-change interface assembly comprises a connecting seat, a multi-stage telescopic arm, a frame body and a spring structure. The connecting seat is internally provided with a connecting port and a bolt hole, and is used for quickly disassembling and assembling the drilling rig assembly or the grabbing execution mechanism. The drilling rig assembly comprises a motor, a drill rod, a side groove, a spherical groove, a supporting block, a telescopic structure, a first driving piece and a side drilling block. The bottom of the drill rod is provided with an opening and a hollow supporting rod, thereby forming a bidirectional earth discharging structure. The structure is used for completing shallow and middle layer drilling and digging through the drilling rig assembly, completing deep layer soil body grabbing through the grabbing execution mechanism, and supplementing the working depth through the multi-stage telescopic arm, so that the problems of poor deep and shallow universal capability of a single drill, poor earth discharging, easy hole collapse in deep layers, difficult slag cleaning and slow terminal switching of a traditional drilling rig are solved.

The application relates to the field of pipe jacking end reinforcement for pipe jacking construction, in particular to a pipe jacking end reinforcement device for municipal pipe jacking construction, which comprises a jack, the jack is fixed on the left side of the right side wall of a starting well, a track is fixed on the bottom of the starting well and left to the jack, a pipe is placed on the top of the track, a plurality of connecting bolts are uniformly arranged on the left end of the pipe, a plurality of hole grooves matched with the connecting bolts are arranged on the right end of the pipe, a fastening ring is arranged between the two pipes, a pipe constraint mechanism is arranged on the top of the starting well and right to the left pipe inlet, a rotating mechanism is fixed on the left end of the jack, and a track plate is fixed on the right side wall of the starting well and left to the front side of the jack through a supporting column. The two pipes are connected and fixed through the fastening ring, the positioning screw and the positioning ball can be fixed in cooperation with the positioning hole and the spherical groove arranged on the pipe, the middle position of the main ring is corrugated, and the fine adjustment and slight rotation of the pipe can be adapted.

A transmission mechanism and lifting device are disclosed. The mechanism includes a base, a sliding member slidably disposed on the base, a first connecting member, a second connecting member, and a drive assembly. The mechanism has a Z-direction perpendicular to the plane of the base, an X-direction consistent with the driving direction of the drive assembly, and a Y-direction perpendicular to both the Z and X directions. The first connecting member includes a connecting end and a spherical end, the connecting end being rotatably connected to the spherical end via a rotating shaft. The rotating shaft is not perpendicular to the plane of the base. The connecting end connects to the sliding member. The first end of the second connecting member has a spherical groove matching the spherical end and receives the spherical end within the spherical groove. The second end of the second connecting member connects to the drive assembly. The drive assembly is configured to drive the sliding member to slide on the base by driving the second connecting member. This mechanism, by incorporating a first connecting member and a second connecting member with multiple degrees of freedom, eliminates the constraint between the drive assembly and the sliding member, thereby improving the performance of the transmission mechanism and the lifting device.

The invention discloses a fabricated steel support and steel tie beam connecting assembly for industrial and civil construction, and mainly relates to the technical field of industrial and civil construction. Comprising a plurality of first telescopic beams arranged on a steel tie beam in a sliding mode in the radial direction and a vertical plate arranged on a steel tie supporting plate in a sliding mode, a spherical groove is formed in the vertical plate in the vertical direction, a limiting ball in rolling contact with the spherical groove is arranged at the end of each first telescopic beam, and a limiting groove communicated with the spherical groove is formed in the vertical plate; the side faces of the limiting balls make contact with the limiting grooves, transverse plates making sliding contact with the vertical plates are arranged on the upper side and the lower side of the steel system supporting plate correspondingly, fixing blocks are arranged at the two ends of the vertical plates, through grooves allowing the fixing blocks to penetrate through and a plurality of fixing grooves communicated with the through grooves are formed in the transverse plates, and the two sides of the fixing blocks make contact with the fixing grooves correspondingly. The supporting structure has the beneficial effects that the problem that the supporting structure cannot adapt to the non-rectangular foundation pit is solved, the cost needed by manufacturing of the supporting structure is reduced, and the construction period needed by foundation pit engineering is shortened.

The application particularly relates to a tank car safe loading device and method, and relates to the technical field of tank car loading equipment. The tank car safe loading device comprises a loading platform, a material discharging channel and a turning part. The loading platform is suspended, and the loading platform is provided with a lower pipe opening. The material discharging channel is arranged in the lower pipe opening, and the turning part comprises a seat body and a ball body. The seat body is arranged on the loading platform, and the seat body comprises two oppositely arranged first and second surfaces. The first and second surfaces are respectively provided with spherical recesses. The ball body is arranged between the first and second surfaces and partially accommodated in the spherical recesses. The ball body is provided with a mounting channel, the center of the ball body is located on the axis of the mounting channel, the material discharging channel is arranged in the mounting channel, the ball body is provided with a medium cavity, the medium cavity is arranged around the mounting channel, the volume of the top of the medium cavity is smaller than that of the bottom of the medium cavity, a movable plate is arranged in the medium cavity, and the movable plate is in sliding sealing cooperation with the inner side wall surface of the medium cavity.

The utility model discloses a ceramic heating element for water heating, which comprises an upper ceramic layer, a lower ceramic layer and a tungsten slurry heating circuit arranged on the opposite side surfaces of the upper ceramic layer and the lower ceramic layer, a plurality of first spherical bulges are arranged on the upper side surface of the upper ceramic layer in a rectangular array, and a tungsten slurry heating layer is arranged on the outer side surface of each spherical bulge. The tungsten slurry heating layer is communicated with a tungsten slurry heating circuit, an outer wrapping ceramic layer is arranged on the upper side face of the upper ceramic layer, a plurality of second spherical protrusions are arranged on the upper side face of the outer wrapping ceramic layer, a plurality of spherical grooves are formed in the lower side face of the outer wrapping ceramic layer, the number of the first spherical protrusions, the number of the second spherical protrusions and the number of the spherical grooves are consistent, and the positions of the first spherical protrusions, the second spherical protrusions and the spherical grooves correspond vertically. The first spherical protrusion makes contact with the inner side face of the spherical groove. Two electrode holes are formed in the upper ceramic layer in a penetrating mode and are the two ends of the tungsten slurry heating circuit respectively, and electrifying assemblies connected with the tungsten slurry heating circuit are arranged in the electrode holes. The utility model has the advantage of high heating efficiency.

To provide a lamp fitting for vehicle capable of precise adjustment of an optical axis of a light source unit.SOLUTION: An aiming part 30 has: a mount ring 31 provided for a bracket; an adjusting nut 32 freely slidably supported with respect to a housing while connected via the mount ring 31 and a pivot part 35; and an adjusting bolt 33 which includes a male screw part 33a screwed with a female screw part 32a provided for the adjusting nut 32 and is freely rotatably supported with respect to the housing around the axis. The pivot part 35 has a spherical surface recess 36 provided for an inner surface of the mount ring 31 and a spherical surface projection 37 provided on an outer surface of the adjusting nut 32. With the spherical surface projection 37 engaged with spherical surface recess 36, the mount ring 31 is freely tiltably fitted to the adjusting nut 32.SELECTED DRAWING: Figure 6

The present application relates to a metallographic sample grinding and polishing auxiliary holding device, belonging to the field of metallographic analysis. The device comprises a transparent observation plastic sheet, a hand-held sleeve, a clamping device, an auxiliary clamping sleeve, a clamping seat, steel balls and a top column. The spherical groove is opened on the outer top of the hand-held sleeve, and the transparent observation plastic sheet is adhered to the hand-held sleeve. The steel balls are built-in, and the position of the steel balls in the spherical groove can be observed to assist the leveling process in the manual coarse grinding process. The clamping seat is provided with cylindrical recesses of different sizes, which can be used for assisting the sample clamping process in the coarse grinding process. The top column is cylindrical, which is used to prevent the sample from sliding tangentially in the manual coarse grinding process. Compared with the traditional additive inlaying process, the device solves the problem of difficulty in separating the sample from the inlaying material after grinding and polishing, and also solves the problem of no auxiliary leveling in manual coarse grinding. The present application can be used for manual coarse grinding, machine fine grinding and polishing processes at the same time, can effectively replace the inlaying step of the sample, is more convenient to hold and disassemble, and reduces the probability of inclination of the grinding and polishing surface after grinding and polishing.

Provided is a sample fixture for an indirect tensile test of rock mass, relating to the technical field of rock mass engineering geomechanics tests. The sample fixture includes an upper fixture, and a lower fixture located below the upper fixture. The upper fixture includes an upper fixing block, a ball head, and an upper knife. The lower fixture includes a lower fixing block, a telescopic positioning plate, and a lower knife. The ball head is in fit with a spherical groove on an upper surface of the upper fixing block to achieve the function of transferring pressure, thus ensuring loading strength acting on a sample. A loading force is transferred by using a cutting edge of the upper knife to make the pressure act on the sample intensively, thus ensuring point or linear loading required by the test.

The invention discloses a connecting device for axial force transmission and universal angle adjustment, the connecting device comprises an adjusting ball head base and a universal force transmission column body, one end of the universal force transmission column body is provided with a ball head, one end of the adjusting ball head base is provided with a spherical groove, at least two force transmission adjusting ball layers are arranged in the spherical groove, and the force transmission adjusting ball layers are connected with the universal force transmission column body. The force transmission adjusting ball layers are sequentially stacked in the radial direction of the spherical groove from outside to inside, the force transmission adjusting ball layer on the outermost layer is in rolling contact with the spherical groove, the force transmission adjusting ball layers are in rolling contact, and the force transmission adjusting ball layer on the innermost layer forms a ball head installation groove used for installing a ball head of the universal force transmission column. And the force transmission adjusting ball layer on the innermost layer is in rolling contact with the ball head of the universal force transmission column body. The connecting component has the advantages that the connecting component is allowed to be subjected to smooth and stepless direction adjustment in the space while huge axial pressure is transmitted, and axial concentrated force can be efficiently and uniformly diffused to a bearing surface.

The embodiment of the invention relates to the field of semiconductor manufacturing, provides a bearing pin assembly and deposition equipment, and at least can solve the problem of thermal expansion angle deviation caused by high temperature in the semiconductor manufacturing process. The bearing pin assembly comprises a rod body; one end of the rod body penetrates through the balancing weight; the compensation structure is located between the balancing weight and the rod body; wherein a spherical groove is formed in the inner side of the balancing weight, the compensation structure at least comprises a ball, the ball is located between the spherical groove and the rod body, the rod body penetrates through the ball, and the ball and the spherical groove are used for compensating inclination of the rod body.

A lamp head connection structure is provided. The lamp head connection structure includes a connection member located on a lamp body and a connection seat located on a lamp head, where the connection seat is provided with a spherical recess structure; the connection member is a sphere that is compatible with the spherical recess structure; the spherical recess structure has an inner diameter larger than a diameter of the sphere and an opening diameter smaller than the diameter of the sphere; the connection member is embedded inside the spherical recess structure; and the lamp head is rotatable 360° relative to the lamp body. A lamp head connection structure, a lamp head, and a lamp are provided, featuring easy disassembly and assembly, space saving, and convenient transportation.

The utility model relates to the technical field of adjusting bolts, and particularly discloses a balance car ball head adjusting bolt which comprises an adjusting threaded rod body which is of a cylindrical design, and one end of the adjusting threaded rod body is fixedly connected with a ball head connecting end. A hexagonal driving open groove for adjustment is formed in the surface of the end, away from the ball head connecting end, of the adjusting threaded rod body. The ball head adjusting bolt of the balance car is provided with the ball head connecting end part and the hexagonal driving open groove for adjustment, when the ball head adjusting bolt works, one end of the ball head of the ball head adjusting bolt is placed into a corresponding spherical groove or a joint part of a part needing to be connected or adjusted, the ball head can freely move in the groove and is tightly matched, and the ball head can be conveniently connected or adjusted through the ball head. And meanwhile, the adjusting threaded rod body is driven to rotate by utilizing an adjusting hexagonal driving open groove in the tail of the device, and finally, the height is adjusted by moving threads on the outer surface of the adjusting threaded rod body.

The utility model provides a liquid storage bag convenient to support, and relates to the technical field of liquid storage bags, the liquid storage bag convenient to support comprises a mounting rack, the surface of the mounting rack is rotatably connected with a first connecting rack, the inside of the first connecting rack is slidably connected with a support frame, the surface of the support frame is provided with a groove, the inside of the first connecting rack is slidably connected with a wedge block, and the wedge block is provided with a groove. A spherical block is slidably connected into the supporting frame, the first connecting frame, the supporting frame, a first handle, a first limiting rod, a first spring and a wedge-shaped block are arranged, the supporting frame can be rapidly detached by pulling the first handle, and through the spherical block, a sliding groove, a spherical groove, a fixing circular ring, a second limiting rod and a second spring, the supporting frame can be rapidly detached. The spherical block can be quickly inserted into the spherical groove through the sliding groove, stable fixation is achieved, the spherical block can smoothly return during disassembly, the operation process is simplified, the spherical block can be folded and stored when not used, the space utilization rate is increased, the spherical block is suitable for various scenes, operation is easy and convenient, and the use efficiency is effectively improved.

This product is a golf training device used for practicing golf swings. As shown in the reference diagram indicating the names of each part, it has two guides: a first guide in the shape of a straight rod and a second guide in the shape of a semicircular arc, which serve as guides during the swing. The first and second guides are attached to a platform, whose orientation can be freely adjusted relative to a plate-like part placed on the ground. The platform consists of a base fixed to the plate-like part and a spherical sliding part fixed to the first or second guide, with the top surface of the base having a spherical recess. The spherical sliding part is slidably joined to the top surface of the base by magnetic force. The second guide is held in place by a clamp and attached to the sliding part of the platform via the clamp. By manually moving the first or second guide while the plate-like part is placed on the ground, the sliding part of the platform can be slid relative to the top surface of the base. The holding angle of the second guide can also be adjusted by loosening the clamp screw. These features allow the axial orientation (posture) of the first guide and the orientation (posture) of the arcuate surface of the second guide to be adjusted to any orientation (up / down, left / right, front / back), and can be fixed in the adjusted orientation. As shown in Reference Figure 1, which shows the usage state, the angles of the first guide and second guide (the inclination angle when viewed from the side) are adjusted to match the lie angle of the golf club, and the plate-shaped portion is placed on the ground in that state. In this state, by matching the lie angle of the golf club with the inclination angle of the rod-shaped portion of the first guide and practicing a golf swing while being conscious of aligning the arc of the swing with the arc of the second guide, the ideal golf swing can be mastered. Furthermore, as shown in Reference Figure 2, which shows the usage state, the angles of the first guide and second guide can be set to different angles. In particular, by adjusting the angle of the second guide, the shape of the arc of the second guide as seen from the user's line of sight can be freely changed. Therefore, by adjusting the angle of the second guide to an angle appropriate for the swing practice menu, the desired training can be performed efficiently. Furthermore, the rod-shaped portion of the first guide is configured to be extendable and contractible, and can be adjusted to a desired length.In addition, the arc-shaped portion of the second guide can be disassembled into a central part and end parts, and it can also be used with one or both end parts removed, as shown in Reference Figures 3 and 4, which show the state of use. This allows the length of the arc of the second guide to be adjusted, and also makes it possible to set whether the arc is longer before or after hitting the ball.

The utility model discloses a flatness leveling device which comprises a supporting base, a clamp bottom plate is arranged on the supporting base, a spherical groove is formed in the supporting base, a spherical supporting block corresponding to the spherical groove is arranged on the clamp bottom plate, and the spherical supporting block is connected with the spherical groove in a sliding mode. A plurality of electric telescopic rods are arranged on the periphery of the supporting base, the two ends of each electric telescopic rod are hinged to the supporting base and the clamp bottom plate respectively, a plurality of electronic level meters are arranged on the periphery of the plane of the clamp bottom plate, a clamping area is arranged on the clamp bottom plate, and the electronic level meters are located on the outer side of the clamping area. And a controller is arranged in the support, the electric telescopic rod and the electronic level meter are electrically connected with the controller, the clamp bottom plate is automatically leveled, the efficiency is high, and the machining precision of parts is guaranteed.

The application provides an oil return assembly and a horizontal vibration test bench. The oil return assembly comprises a fixed plate, at least two oil outlet holes arranged on the fixed plate, and a flow adjusting device. The flow adjusting device comprises a mounting seat fixed between the two oil outlet holes, a swing rod mounted on the mounting seat, and a floating ball arranged at two ends of the swing rod. The top end of the oil outlet hole is provided with a spherical groove matched with the floating ball. The swing rod is rotatably arranged relative to the mounting seat to control the relative position of the floating ball and the spherical groove. The horizontal vibration test bench and the oil return assembly can automatically adjust the opening size of the two oil outlet holes at different distances, adjust the oil return flow of different oil outlet holes, balance the oil return flow of the two different oil return pipes, and improve the stability of the system.

The utility model discloses a kind of reinforcing support frames for gear shaft machining, it is related to gear shaft technical field, the position of support frame is adjusted according to the movement of cutting tool in real time cannot be proposed to the problems of background technology, the travel of cutting tool is influenced by support frame, it is not conducive to gear shaft one-time processing, low practicality, present and propose following scheme, including base, the base top outer wall is equipped with two sliding modules, the sliding module includes slide rail and sliding block, and sliding block is slidably installed on the outer wall of slide rail, the base upper is equipped with mounting plate, and the mounting plate bottom is equipped with support mechanism, the support mechanism includes the mounting cylinder that semispherical recess is opened on the bottom outer wall, and support ball is slidably installed in recess.The utility model can adjust the position of mounting ring according to the movement of cutting tool in real time, prevent the travel of cutting tool from being influenced by mounting ring, it is conducive to gear shaft one-time processing, and practicality is improved.

A periscopic coarse pointing mechanism locking and releasing device is characterized in that an inclined top plate is arranged at the upper end of a fixed seat, and a locking and releasing seat is seated on the top plate through a bottom plate with the lower end consistent with the top plate in inclination; a memory metal separation nut is fixed on the back surface of the top plate, a pressing block is sleeved above the annular boss on the bottom plate, bulb positioning rods are fixed at two ends of the pressing block, and bulbs at the lower ends of the bulb positioning rods are simultaneously embedded in the spherical through holes at two ends of the bottom plate and the first spherical grooves at two ends of the top plate; external threads are arranged at the two ends of the locking and releasing rod, the lower end of the locking and releasing rod penetrates through the annular boss and the via hole and then is in threaded connection with the memory metal separation nut, and the pressing block is pressed on the annular boss by installing the locking nut at the upper end of the locking and releasing rod; the periphery of the annular boss is sleeved with a compression spring, and the two ends of the compression spring abut against the pressing block and the bottom plate respectively. The connecting base is fixed to a first vertical mounting plate on one side of the locking and releasing base through a vertical mounting face, and the upper end of the connecting base is provided with a connecting flange matched with the periscopic rough pointing mechanism.

The utility model discloses a lifting sliding door which comprises a door frame, two sides of the inner wall of the door frame are fixedly connected with retention sliding doors, the sliding sliding door is connected with a handle, a lifting system and a bottom idler wheel matching assembly, two ends of the upper side of the sliding sliding door are connected with guide sliding blocks, two sides of each guide sliding block are provided with a plurality of semispherical grooves, and the semispherical grooves are hinged with balls. The door frame comprises an upper side frame, side frames and a lower side frame which are connected with one another, the sliding rail is arranged on one side of the lower side frame, the upper side frame is provided with a sliding groove matched with the guide sliding block to slide, the side frames on the two sides are provided with cylindrical grooves, the inner walls of the cylindrical grooves are fixedly connected with inserting rods, and the ends of the inserting rods are provided with anti-disengaging discs. The outer wall of a shaft body of the anti-disengaging disc is slidably connected with a matched inserting barrel, a rubber air bag is connected between the inner wall of the inserting barrel and the end of the inserting rod, the outer wall of a shaft body of the inserting barrel is connected with a plurality of dovetail sliding blocks and stepped limiting sliding blocks, and buffer springs are connected between the stepped limiting sliding blocks and the cylindrical grooves.