142 results about "Spherical recess" patented technology

The invention relates to the field of vibration testing, in particular to a load vibration test bench for production and processing of automobile fasteners, which comprises a shell. A spherical groove is formed in the shell, a swing frame is rotationally arranged in the spherical groove around the circle center of the spherical groove, the included angle between the upper end face of the swing frame and the horizontal plane is an acute angle when the swing frame rotates, a lifting frame is movably arranged on the swing frame in the height direction of the swing frame, and a fastener is installed on the lifting frame. According to the invention, two kinds of simulated vibration are combined with each other, so that the test environment of the fastener is more simulated, and the accuracy of the load vibration test result of the fastener is ensured.

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.

The invention discloses a fabricated building supporting seat for constructional engineering, and relates to the technical field of constructional engineering. The device comprises a lower support, a supporting column is arranged in the lower support, a spherical groove is formed in the top of the supporting column, a spherical plate is rotatably mounted in the spherical groove, an upper support is mounted at the top of the supporting column, and main spring steel plates are fixedly mounted on the periphery of the supporting column; the end, close to the interior of the lower support, of the strength adjusting bolt is provided with a limiting part and an anti-disengaging part. The auxiliary spring steel plates are arranged at the four corners of the lower support, the main spring steel plates abut against the auxiliary spring steel plates, the double-damping design is adopted, the auxiliary spring steel plates can provide additional elastic support, when the main spring steel plates are subjected to large external force or vibration, the abutting effect of the auxiliary spring steel plates can effectively share part of stress, and the damping effect is good. And the shock resistance of the support is improved, so that the influence of vibration transmitted to the structure is effectively reduced.

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 utility model relates to a light high-performance wing-shaped fan blade which comprises a cylindrical blade handle, a wing-shaped blade body is arranged on one side of the blade handle, one end of the blade body is fixedly connected with the blade handle through a blade handle connecting piece, the other end of the blade body is fixedly connected with a blade sealing plate, and the blade body comprises an arc-shaped upper panel and an arc-shaped lower panel. An arc-shaped transition plate is formed between one side edge of the upper panel and one side edge of the lower panel, and the other side edge of the upper panel and the other side edge of the lower panel are welded and fixed together; a plurality of spherical pits are formed in the upper panel and the lower panel; the blade handle connecting piece comprises a wing-shaped inner end plate, the blade handle is welded and fixed to the middle of the end face of one side of the inner end plate, and an annular inner inserting plate is welded and fixed to the end face of the other side of the inner end plate. According to the wing-shaped fan blade, plates are adopted as the blade bodies of the wing-shaped fan blade, the pits are conveniently formed in the blade bodies, the structure is simple, the performance is good, and compared with a blade of a casting structure, the manufacturing cost can be effectively saved.

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 invention provides a pipeline spring support hanger. The pipeline spring support hanger comprises a force transmission structure, a pipe hoop, a clamp, a spring assembly and a fixing assembly. A first limiting disc and a second limiting disc are arranged at the upper end of the force transmission structure. The lower end of the force transmission structure is designed to be a spherical structure used for being inserted into the spherical groove of the clamp. The pipe hoop is connected with the clamp. The fixing assembly comprises a shell and an internal fixing assembly. The outer side of the inner fixing assembly and the outer side of the spring assembly are wrapped with the shell. And the second limiting disc is clamped in the internal fixing assembly. The spring assembly comprises a main spring and a small spring assembly. The lower end of the small spring assembly is connected with the first limiting disc, and the upper end is connected with the inner wall of the upper end of the shell. The main spring is connected between the upper end inner wall and the lower end inner wall of the internal fixing assembly. And the main spring sleeves the outer side of the small spring assembly. Through the multi-stage spring structure design, the technical problem that when an existing pipeline spring support hanger deals with sudden large vibration, the performance is poor, and the spring structure is possibly damaged is solved.

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 utility model discloses a stamping device for steel ball processing, which comprises a base and a top seat, the top of the base is fixedly connected with a lower die, the top of the top seat is fixedly connected with a hydraulic cylinder, the output of the hydraulic cylinder is fixedly connected with a fixed seat, the bottom of the fixed seat is fixedly connected with an upper die, and the back of the base is provided with a material taking part. The stamping device comprises a base, a top base and a material taking component, the top base is fixedly connected with the base, a deviation preventing component is arranged between the fixing base and the base, and the material taking component comprises a transverse plate fixedly connected with the back face of the base, a driving groove formed in the top of the transverse plate and a driving block arranged in the driving groove. The problems that steel balls are difficult to take out, the taking-out efficiency is low and the practicability is insufficient due to the fact that the steel balls can be stamped and machined, but the machined steel balls can be left in spherical grooves and need to be manually taken out one by one are solved.

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 utility model provides a door motor stator coil rivet one-time press-fitting forming device, a spherical pressure head is arranged at the lower end of a pressure head of a hydraulic machine, and the bottom end of the spherical pressure head is provided with a hemispherical pressure head part; a hanging hole is formed in the middle of the fixing plate, the neck of the spherical pressing head is sleeved with the hanging hole, the diameter of the hanging hole is smaller than that of the pressing head of the spherical pressing head, and screw holes used for being connected with connecting pieces are formed in the periphery of the fixing plate; the periphery of the top end of the connecting piece is fixed to the fixing plate through bolts, a spherical groove is formed in the center of the connecting piece corresponding to the pressing head portion of the spherical pressing head, and the connecting piece is hung on the spherical pressing head through the fixing plate. The rivet pressing head is fixed to the bottom end of the connecting piece, the bottom of the rivet pressing head is annular, and a plurality of rivet pressing grooves are evenly distributed in the annular bottom of the rivet pressing head. And the positioning bottom plate is arranged on a load bearing platform of the hydraulic machine, and the center of the positioning bottom plate is opposite to the center of the rivet pressure head. The device has the advantages that stress balance is guaranteed, production consistency is good, and production efficiency is high.

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.

The present invention discloses a ball valve for coal powder injection, which belongs to the technical field of pipeline shut-off ball valves, and includes a ball valve body, the ball valve body consisting of a valve seat and a ball valve core, a through valve port provided in the ball valve core, an air blowing anti-wear component provided in the ball valve core, a control seat provided outside the valve seat, a swivel control end connected to the ball valve core provided at one end of the control seat, a pneumatic control component provided at the other end of the control seat, a spherical groove provided at the bottom of the butt joint, and an air induction member provided in the butt joint located at the spherical groove. The present invention provides a spherical groove for accumulating coal powder in the air inlet pipe of the ball valve, and provides an air induction plate above the spherical groove. During the closing process, the coal powder concentrated at the air inlet of the ball valve core is accumulated in the spherical groove. During the opening process, the air induction plate is used to change the wind direction so that the coal powder concentrated in the spherical groove is transported, thereby achieving the effect of increasing the amount of coal powder when the air pressure increases and achieving the effect of uniformly transporting the coal powder.

The invention belongs to the technical field of fire extinguishing ball projection, and particularly relates to a fire extinguishing ball projection device which comprises an automatic controller, a rotating lifting rod is arranged on the automatic controller, the top end of the rotating lifting rod is connected with a launching box through a lifting device, and two supporting rods are arranged between the rotating lifting rod and the launching box; the four sliding rails are fixedly installed at the four corners of an inner cavity of the launching box correspondingly, a stabilizer is arranged between the four sliding rails, sliding blocks are fixedly installed at the four corners of the stabilizer correspondingly, the four sliding blocks are slidably installed on the four sliding rails correspondingly, a spherical groove is formed in the center of the front end of the stabilizer, and four holes are formed in the stabilizer. The whole device intelligently and automatically identifies a fire source and fire behavior for fire extinguishing treatment, is linked with an existing fire-fighting alarm system, does not need site transformation, is rapid in installation, can strengthen fire-fighting measures in an area at low cost, and is low in maintenance cost. The device is low in cost, efficient, reusable, capable of meeting the requirement of temporarily adding fire fighting and capable of being applied to multiple scenes.

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 discloses a curved surface ball sliding structure of a floor deformation joint, which particularly relates to the technical field of deformation resistance of constructional engineering, and comprises a concrete structure and a deformation joint positioned on the surface of the concrete structure, an upper sliding panel is jointly mounted at the tops of the two lower base plates, a plurality of spherical grooves are formed in the lower surface of the upper sliding panel and the upper surfaces of the lower base plates, balls are embedded into the spherical grooves, and sliding damping paint is painted on the sliding curved surfaces of the balls. Overall installation can be achieved, the durability of the structure is improved, controllable energy dissipation and shock absorption capacity and a good self-resetting function are achieved, floor deformation joint structures are greatly enriched, and therefore the safe and reliable deformation joint device is provided.