46results about How to "Convenient relative rotation" patented technology

The invention discloses an anti-theft mobile phone shell for a mobile phone, and belongs to the technical field of mobile phone accessories. The anti-theft mobile phone shell for a mobile phone comprises an outer shell and an earphone hole, the earphone hole is formed in the side wall of the short side of the outer shell, a first installation groove communicating with the earphone hole is furtherformed in the side wall of the short side of the outer shell, a second installation groove communicating with the first installation groove is formed in the side wall of the long side of the outer shell, and a connecting piece is fixedly arranged in the second installation groove. The connecting piece comprises a sleeve and a touch pressing block, the sleeve is embedded into the inner wall of thesecond mounting groove, the touch pressing block is slidably connected into the sleeve, and a limiting clamping ring matching the second mounting groove is fixedly arranged at the end of the touch pressing block; the earphone plug is fixedly connected with or separated from the mobile phone shell by setting manual operation, so that when the mobile phone shell is fixedly connected with the earphone plug, the attention of a user can be attracted to a great extent, and the risk that a mobile phone is stolen is reduced; in addition, a user can separate the earphone plug from the mobile phone shell by touching and pressing the touching and pressing block.

The invention relates to a foldable and unfoldable space platform which comprises a rotary table and a plurality of supporting frames, the supporting frames are each of a foldable and unfoldable structure and annularly arranged on the peripheral side of the rotary table, and every two adjacent supporting frames are hinged to each other; one ends of the multiple supporting frames are connected to the peripheral side of the rotary table through memory alloy, and the supporting frames are made to rotate to preset positions relative to the rotary table through power-on and power-off of the memoryalloy. The exposed area of the space platform is obviously increased after the space platform is unfolded, the occupied area of the whole panel is relatively small in the recycling process, and the launching and recycling cost can be reduced; deformation driving force generated by on-off of the memory alloy is adopted to enable the supporting frame blades to rotate, and then all the supporting frame blades are driven to rotate relative to the rotary table, so that the structural weight can be reduced, the space is saved, and the system reliability is improved.

The invention discloses a rotatable oil injection mechanism. The rotatable oil injection mechanism comprises an elbow oil cup, a rotary body and a one-way valve which are arranged from top to bottom in sequence. The lower end of the elbow oil cup is provided with a spherical connecting part. The spherical connecting part is provided with an oil injection port communicating with the interior of theelbow oil cup. The upper side of the rotary body is provided with a first insertion groove corresponding to the elbow oil cup. The inner sidewall of the first insertion groove is provided with a connecting groove corresponding to the spherical connecting part. The end, close to the spherical connecting part, of the elbow oil cup is sleeved with a connecting ring. The inner sidewall of the connecting ring is annularly provided with a plurality of sliding blocks. The outer sidewall of the elbow oil cup is provided with first sliding grooves corresponding to the sliding blocks. The lower side ofthe connecting ring is provided with a mounting ring. The rotatable oil injection mechanism is simple in structure and convenient to use and facilitates injection of grease by rotating the elbow oilcup. Meanwhile, communication of an oil injection channel of the oil injection mechanism can be controlled conveniently. Accordingly, oil injection operation can be carried out conveniently and smoothly.

The invention discloses a quick installing tool for petroleum machine. The quick installing tool comprises a first hoop and a second hoop which are oppositely arranged, wherein one end of the first hoop is in rotary connection with one end of the second hoop through a rotating shaft, connection blocks are arranged on an outer lateral wall of one end far from the rotating shaft of the first hoop and an outer lateral wall of one end far from the rotating shaft of the second hoop, the two connection blocks are fixedly connected through a locking mechanism, fixed blocks are arranged on the opposite sides of the first hoop and the second hoop, inserting grooves are formed in the opposite sides of the two fixed blocks, rotary arms are inserted into the inserting grooves, clamping rings are fixedly in sleeve connection to the rotary arms, abutting rings which are in rotary sleeve connection to the rotary arms are arranged on the sides far from the fixed blocks of the clamping rings, connecting rings are fixed to the sides close to the fixed blocks of the abutting rings, and annular connection grooves corresponding to the connection rings are formed in the fixed blocks. The quick installing tool disclosed by the invention has a simple structure, is convenient to use, can stably and firmly fix a plug valve, can prevent the plug valve from shaking and according improves installation efficiency of the plug valve.

The invention provides a multiple nested file cabinet comprising a rotating shaft, a spline sleeve, a push rod, a slider and multiple ring frames; a plurality of side plates are mounted on the inner periphery of each ring frame along the circumferential direction, and the plurality of side plates divide the ring frame into a plurality of storage cells along the circumferential direction; a plurality of ring frames are coaxially arranged, and sequentially sleeve on the outer periphery of the rotating shaft from the inner side to the outer side; each ring frame is correspondingly provided with atransmission ring, the outer periphery of the spline sleeve is provided with an outer spline, and the inner periphery of each transmission ring is provided with an inner spline engaged with the outerspline on the spline sleeve; during the linear sliding process of the spline sleeve, the spline sleeve meshes with the contacting transmission ring respectively, and the rotating shaft drives the corresponding ring frame to rotate through the spline sleeve and the transmission ring. The invention discloses a multiple nested file cabinet, which can adjust the position of each storage cell on the ring frame by rotating the ring frame when in use, so as to take and put articles by rotating the storage cell at the high position to the low position.

The invention discloses an adjustable shank supporting traction reduction frame which comprises a guide block connected with a bed body and a vertical supporting rod, wherein a fixed arm is arranged on the supporting rod and connected with one end of a connection arm, the other end of the connection arm is connected with one end a suspension arm, the other end of the suspension arm is connected with a shank supporting frame, the connection arm rotates relative to the fixed arm and the suspension arm, and the shank supporting frame is connected with the suspension arm through a universal ball. A guide plate connection groove, a supporting rod threaded hole, a guide block threaded hole, a supporting rod connection hole and a guide rail groove are formed in the guide block, the supporting rod is connected with the supporting rod connection hole, a guide plate and a guide rail are arranged on the bed body, the guide plate is matched with the guide connection groove, and the guide rail is matched with the guide rail groove. The adjustable shank supporting traction reduction frame can assist the fractured shank to achieve intraoperative closed reduction, the shank can be placed, regulated and fixed easily, comfortableness of shank supporting is good, operations for fixing the inner side or the outer side of the shank can be facilitated, fluoroscopy is not influenced, and operation results can be confirmed by obtaining intraoperative standard fluoroscopic images.

The invention discloses an anti-theft mobile phone shell, and belongs to the technical field of mobile phone accessories. The anti-theft mobile phone shell comprises an outer shell and an earphone hole, the earphone hole is formed in the side wall of the short side of the outer shell, a first installation groove communicated with the earphone hole is further formed in the side wall of the short side of the outer shell, a second installation groove communicated with the first installation groove is formed in the side wall of the long side of the outer shell, and a connecting piece is fixedly arranged in the second installation groove. The connecting piece comprises a sleeve and a touch pressing block, the sleeve is embedded into the inner wall of the second installation groove, the touch pressing block is slidably connected into the sleeve, and a limiting clamping ring matched with the second installation groove is fixedly arranged at the end of the touch pressing block; the earphone plug is fixedly connected with or separated from the mobile phone shell by setting manual operation, so that when the mobile phone shell is fixedly connected with the earphone plug, the attention of a user can be attracted to a great extent, and the risk that a mobile phone is stolen is reduced; in addition, a user can separate the earphone plug from the mobile phone shell by touching and pressing the touching and pressing block.

The invention discloses an intelligent electric cradle capable of conveniently pacifying a baby. The electric cradle comprises a cradle main body, a cradle support frame, a driving mechanism and a controller, wherein arc-shaped sliding blocks are symmetrically arranged at two ends of a length direction of the cradle main body; arc-shaped sliding grooves, which are matched with the arc-shaped sliding blocks, are formed in the cradle support frame; the driving mechanism comprises a drive motor, a speed-reducing rotary disc and a transmission rod; one end of the transmission rod is connected to an eccentric position of the speed-reducing rotary disc via a hinge and an electromagnetic pushing plate is connected to the other end of the transmission rod via a spherical hinge; a shaking magneticplate is arranged at the bottom of the cradle main body; and a sound sensor is arranged in the cradle main body. According to the intelligent electric cradle provided by the invention, as baby's crying is detected by the sound sensor, a system is started to automatically control the cradle to get shaking so as to pacify the baby, and the cradle is stable in shaking, safe and reliable and is relatively low in noise; and the cradle can achieve a good effect of soothing the baby and improve baby's sleep quality; therefore, the cradle is conducive to baby's growth.

The invention provides a building brick quality inspection device and method and belongs to the technical field of brick quality inspection. The device comprises a workbench. The workbench is specifically in a U shape. Four sliding bars distributed in a penetrating mode are arranged on the workbench. A mounting plate is fixedly arranged at the tops of the sliding bars. A pressing air cylinder is fixedly arranged at the bottom of the mounting plate. A pressing bar is fixedly arranged on a piston rod arranged at the output end of the pressing air cylinder. A pressing disc is fixedly arranged atthe bottom of the pressing bar, and the pressing bar is arranged in a sliding mode. An inspection table is fixedly arranged on the bottom wall of the U shape of the workbench. A mounting groove is formed in the center of the top of the inspection table. An accommodating stand is arranged in the mounting groove. According to the building brick quality inspection device and method provided by the invention, by arranging a pressure sensor, the pressure borne by a brick can be intuitively inspected, qualified bricks and unqualified bricks can be conveyed out through a first push plate and a secondpush plate respectively after inspection is completed, and accordingly, the inspected bricks are distinguished.

The invention belongs to the technical field of automobile parts and particularly discloses a gear interlocking type automobile back door hinge, which comprises a first hinge, a second hinge, a thirdhinge, a first pin shaft and a second pin shaft; a regulating chamber is arranged on the second hinge, a first gear and a third gear are arranged on the first pin shaft, and a second gear is arrangedon the second pin shaft; a first one-way bearing and a third one-way bearing are arranged on the first pin shaft, a first friction wheel is arranged on the first one-way bearing, and a third frictionwheel is arranged on the third one-way bearing; a second one-way bearing and a fourth one-way bearing are arranged on the second pin shaft, a second friction wheel is arranged on the second one-way bearing, and a fourth friction wheel is arranged on the fourth one-way bearing; the adjusting chamber is internally provided with a fixing column, a locking gear, an upper adjusting column, a lower adjusting column and an adjusting rod; an upper friction wheel sleeves the outer wall of the upper adjusting column, and a lower friction wheel sleeves the outer wall of the lower adjusting column. The door hinge aims to solve the problem that a prior hinge can only open the back door by 180 degrees.

The injection mold comprises a bottom plate, a fixed mold block and an ejector plate, a plurality of first ejector pins and a plurality of second ejector pins are arranged on the ejector plate, the ends, away from the fixed mold block, of the second ejector pins are slidably connected with the ejector plate, a plurality of driving mechanisms are arranged on the ejector plate, and a touch rod is further arranged on the ejector plate. One end of the feeler lever is in linkage fit with the driving mechanism; during mold opening, the ejector plate moves towards the fixed mold block, the first ejector and the second ejector synchronously eject a product until the feeler lever abuts against the fixed mold block, the ejector plate continues to move, the feeler lever drives the driving mechanism to drive the second ejector to secondarily eject towards the fixed mold block, and the secondary ejection distance of the second ejector is larger than the moving distance of the ejector plate. The product is separated from the first ejector pin. According to the injection mold convenient to demold, a product can be quickly and completely demolded from the fixed mold and the ejector pin in sequence, and the machining efficiency is improved.

The invention discloses an acceleration experiment demonstration device for physics teaching. The acceleration experiment demonstration device comprises a substrate, support rods are welded on opposite sides of the outer wall of the top of the substrate, the outer walls of the top of the two support rods are welded with a guide rail, equidistantly distributed air outlet holes are arranged at bothsides of the outer wall of the top of the guide rail, a slide block is disposed on the guide rail, a longitudinal section shape of the slide block is an inverted triangle, and the outer wall of the top of the slide block is fixed with a light shielding plate by the bolts, a buffer cylinder is fixed on one side of the outer wall of the top of the guide rail by the bolts, the outer wall of one sideof the guide rail is provided with a scale, the guide rail has a circular through hole at one end, an intake pipe is inserted into the circular through hole, and the outer wall of the top of the substrate is provided with a T-shaped groove parallel to the guide rail. The acceleration experiment demonstration device not only breaks through the positive triangle shape of the existing air-cushion guide rail, but also prevents the side-turning of the slide block when sliding in the guide rail, and can fully buffer and stop the sliding block to prevent collision damage of the slide block due to toofast speed at the end of the movement.

The invention relates to a pipe bus suspension fitting. The pipe bus suspension fitting comprises a shielding ball and a support rack, wherein the support rack is arranged in the shielding ball and comprises a support arm, one end of the support arm is fixedly connected with an inner wall of the shielding ball, a hanging structure is arranged on the support rack and is used for hanging a pipe bus,a pipe bus penetrating hole and a suspension penetrating hole are formed in the shielding ball, the pipe bus penetrating hole is used for the pipe bus to penetrate through, the suspension penetratinghole is used for connecting the support rack and a suspension insulator, a connection rod is rotatably assembled onto the support rack, a rotation axis of the connection rod extends along an upward-downward direction, a connection part is arranged at an upper end of the connection rod and is used for connecting the suspension insulator, and a bearing part is arranged at a lower end of the connection rod and is used for supporting the support rack in a matching way so as to support the support rack and the shielding ball. By the pipe bus suspension fitting, the facing direction of the pipe buspenetrating hole in the shielding ball can be flexibly adjusted, so that the penetrating requirement of the pipe bus is adapted, and the pipe bus suspension fitting is convenient to install and is high in installation efficiency.

The invention discloses a rail transit system and a turnout beam thereof. The turnout beam of the rail transit system comprises a fixed beam which is adapted to be fixedly connected with the rail beam; a movable plate swingably arranged on the fixed beam, wherein a butt joint groove is arranged at one end of the movable plate away from the fixed beam; a movable beam provided with a butt joint surface on the end face of the movable beam facing the fixed beam, wherein one end of the movable beam adjacent to the fixed beam is adapted to fit in the butt joint groove. The turnout beam of the rail transit system according to the embodiment of the invention has the advantages of good vehicle passing stability, good safety and high reliability.

The invention provides an assembling type external shell used for a power generator. The external shell is formed by two symmetrical semicircular metal shells through splicing. The two side edges of each metal shell are provided with an adapter plate and a connecting plate. The surface of the connecting plate is provided with multiple sealing grooves which are internally provided with sealing rubber strips I protruding out of the sealing grooves so that the gap between the two connecting plates can be sealed by the sealing rubber strips I after the two metal shells are spliced and the two connecting plates are fixed through a fixing bolt. The external side of the adapter plate is connected with a rotating shaft in an adapter manner through a connecting member, and the surface along the length direction of the adapter plate is provided with a bar-shaped groove. The bar-shaped groove is internally provided with a compression spring so that the compression spring is enabled to be in the compression state and generate elastic force after the two metal shells are spliced and the two connecting plates are fixed through the fixing bolt, and separating of the two metal shells is facilitated. The external shell is manufactured in a manner of being formed by the two symmetrical semicircular metal shells through splicing so that the external shell is enabled to be openable, and maintenance work is facilitated.

An assembling and positioning device of a middle door lock body for railway transportation. The assembling and positioning device of the middle door lock body for railway transportation comprises a support, a rotating platform, a motor, a rotating seat and a light sensation positioning assembly. The rotating platform is fixed on the upper portion of the support, the rotating seat is mounted on the rotating platform, a groove for placing of the head of the lock body is formed in the upper end face of the rotating seat, and a rotating shaft of the motor is connected with the lower end of the rotating seat. The light sensation positioning assembly comprises an infrared transmitting tube and an infrared receiving tube, the transmitting line and the receiving line of the infrared transmitting tube and the infrared receiving tube are consistent with the direction of the axis of an oblique hole in the lock body, and the infrared receiving tube is connected with the motor. The lock body is mounted on the rotating seat, the motor drives the rotating seat to rotate, the rotating seat drives the lock body to rotate, when the lock body rotates to a specific angle, light emitted by the infrared transmitting tube penetrates through the oblique hole to be captured by the infrared receiving tube, the infrared receiving tube is connected with the motor, an outside control circuit senses and controls the motor to stop rotating, and positioning operation of the lock body is achieved. The assembling and positioning device of the middle door lock body for railway transportation is convenient to operate and accurate to position.

The invention discloses sweet potato pulp desanding equipment, and belongs to the technical field of food processing. The sweet potato pulp desanding equipment comprises a bottom frame and a discharging assembly fixedly connected to the inner wall of the middle of the top of the bottom frame, and a separating assembly is fixedly connected to the outer wall of the top of the discharging assembly and comprises a barrel and a cover plate fixedly connected to the outer wall of the top end of the barrel; and the inner wall of the barrel is fixedly connected with three or more guide rings which are linearly arranged. Through the arrangement of the separating assembly, a V-shaped area constructed by a filtering ring and a flow guide ring, a sedimentation space can be constructed for sweet potato pulp, gravel and pulp can be conveniently separated and sieved, meanwhile, the sweet potato pulp is dispersed into a dispersing box and is centrifugally thrown out through leakage holes, and due to the fact that the gravel and the sweet potato pulp are inconsistent in quality and different in throwing distance, and by arranging multiple groups of filtering rings and flow guide rings, echelon retention and sieving can be carried out, the efficiency is improved; and further, the filtering rings and flow guide rings can be separated in a staggered mode, after sieving is completed, gravel can be independently treated, and meanwhile impurities are prevented from being retained in the device.

The invention discloses a fixing device for controlling respiration in tumor radiotherapy, and belongs to the technical field of radiotherapy auxiliary article equipment. The fixing device for controlling respiration in tumor radiotherapy comprises a supporting base, a supporting vertical column and a supporting horizontal rod, wherein the supporting vertical column is fixedly connected to the topof the supporting base; the supporting horizontal rod is in sliding connection to the side wall of the supporting vertical column; a first telescopic rod is fixedly connected between the supporting horizontal rod and the supporting base; and a fixing disk and a moving disk which are connected through the second telescopic rod are arranged on the supporting horizontal rod. According to the fixingdevice for controlling respiration in tumor radiotherapy disclosed by the invention, traction rods are driven by a traction disk to rotate along a fixing sleeve; when the traction rods on two sides relatively rotate, the constricting plates on the two sides are driven to mutually close, so that the two sides of the body of a patient are clamped; and besides, chest pressing side rods on two sides of a chest pressure plate are used for pressing the chest cavity position of the patient, so that the respiration of the patient is controlled, and the adverse effects brought to the radiotherapy effects because of the existence of rising and falling of respiration are reduced.

The invention discloses a coal mine underground ventilation structure convenient to fix, and relates to the technical field of coal mine ventilation. The coal mine underground ventilation structure comprises a first rod body, a second rod body, a third rod body and a fourth rod body; one end of the second rod body is slidably connected into one end of the first rod body in a sleeved manner, one end of the third rod body is slidably connected into one end of the fourth rod body in a sleeved manner, and the second rod body is located at the upper end of the third rod body and is perpendicular tothe third rod body; a clamp is further arranged on a connecting body of the third rod body and the fourth rod body in a matched manner; and first inserting grooves are formed in the four corners of the end face, close to the second rod body, of the first rod body. According to the coal mine underground ventilation structure, through the arrangement of a supporting rod, the first rod body, the second rod body, the third rod body, the fourth rod body, a second limiting strip, a third limiting strip, a first clamping plate, a second clamping plate, an inserting column and a connecting rod, the coal mine underground ventilation structure is convenient to install and high in safety in the using process, rapid and efficient ventilation can be achieved by the coal mine underground ventilation structure, and the coal mine underground ventilation structure is high in applicability; and meanwhile, the coal mine underground ventilation structure is good in folding and storage effect and convenient to transport.

An assembling and positioning device of a middle door lock body for railway transportation. The assembling and positioning device of the middle door lock body for railway transportation comprises a support, a rotating platform, a motor, a rotating seat and a light sensation positioning assembly. The rotating platform is fixed on the upper portion of the support, the rotating seat is mounted on the rotating platform, a groove for placing of the head of the lock body is formed in the upper end face of the rotating seat, and a rotating shaft of the motor is connected with the lower end of the rotating seat. The light sensation positioning assembly comprises an infrared transmitting tube and an infrared receiving tube, the transmitting line and the receiving line of the infrared transmitting tube and the infrared receiving tube are consistent with the direction of the axis of an oblique hole in the lock body, and the infrared receiving tube is connected with the motor. The lock body is mounted on the rotating seat, the motor drives the rotating seat to rotate, the rotating seat drives the lock body to rotate, when the lock body rotates to a specific angle, light emitted by the infrared transmitting tube penetrates through the oblique hole to be captured by the infrared receiving tube, the infrared receiving tube is connected with the motor, an outside control circuit senses and controls the motor to stop rotating, and positioning operation of the lock body is achieved. The assembling and positioning device of the middle door lock body for railway transportation is convenient to operate and accurate to position.

The invention discloses a rotatable oil injection mechanism. The rotatable oil injection mechanism comprises an elbow oil cup, a rotary body and a one-way valve which are arranged from top to bottom in sequence. The lower end of the elbow oil cup is provided with a spherical connecting part. The spherical connecting part is provided with an oil injection port communicating with the interior of theelbow oil cup. The upper side of the rotary body is provided with a first insertion groove corresponding to the elbow oil cup. The inner sidewall of the first insertion groove is provided with a connecting groove corresponding to the spherical connecting part. The end, close to the spherical connecting part, of the elbow oil cup is sleeved with a connecting ring. The inner sidewall of the connecting ring is annularly provided with a plurality of sliding blocks. The outer sidewall of the elbow oil cup is provided with first sliding grooves corresponding to the sliding blocks. The lower side ofthe connecting ring is provided with a mounting ring. The rotatable oil injection mechanism is simple in structure and convenient to use and facilitates injection of grease by rotating the elbow oilcup. Meanwhile, communication of an oil injection channel of the oil injection mechanism can be controlled conveniently. Accordingly, oil injection operation can be carried out conveniently and smoothly.

The invention discloses an industrial exhaust gas environment-friendly filtering device, and belongs to the field of filtering device. The industrial exhaust gas environment-friendly filtering device comprises a lower housing; the upper end and the lower end of the lower housing are connected with a gas inlet pipe and a slag discharge pipe respectively; the side wall of the lower housing is fixedly connected with a water storage tank; the water storage tank is connected with a water inlet pipe; the internal wall of the lower housing is provided with an annular installation groove; a connecting ring is fixedly arranged in the annular installation groove; a connecting pipe is arranged between the connecting ring and the water storage tank; the connecting pipe is provided with a second solenoid valve; a plurality of uniformly dispersed atomization nozzles are fixedly connected with the internal wall of the connecting ring; the upper end of the lower housing is connected with an upper housing in rotation manner; the lower end of the upper housing is fixedly connected with a gas guide pipe; a gas discharge pipe is fixedly connected with the side wall of the upper housing; the upper end of the upper housing is provided with an installation hole matching the gas guide pipe. The industrial exhaust gas environment-friendly filtering device can be used for removing impurities in exhaust gas conveniently, and is convenient for connection of pipelines in different directions.

The invention relates to a whole-house customized intelligent cabinet, which comprises a cabinet body, cabinet doors, rotating devices, a lifting storage device and a rotating storage device, the cabinet doors are arranged at the front end of the cabinet body in a bilateral symmetry mode, the rotating devices are installed at the lower end of the inner side of the cabinet body, the lifting storagedevice is installed at the upper ends of the rotating devices, and the rotating storage device is arranged below the lifting storage device. The invention provides the whole-house customized intelligent cabinet. The problem that the storage area on a tabletop is limited can be solved; more kitchen utensils are difficult to contain; and in the using process of an existing cabinet, an upper-layer space of the existing cabinet is difficult to utilize, and kitchen utensils are not classified and collected, so that the existing cabinet is difficult to meet the increasingly increasing requirementsof people for kitchen utensil collection, and the like.

The invention discloses an anti-theft ball lock and mainly relates to the fields of locks. The anti-theft ball lock comprises a lock housing, wherein a lock cylinder is arranged in the lock housing and is provided with a first key insertion groove, the lock cylinder is provided with a first ball hole, the lock housing is provided with a second ball hole, a first ball group is arranged between the first ball hole and the second ball hole and comprises a first ball and a second ball, the lock cylinder is provided with a second key insertion groove and a third ball hole, the lock housing is provided with a fourth ball hole, a second ball group is arranged between the third ball hole and the fourth ball hole and comprises a third ball and a fourth ball, and the lock housing is provided with connecting grooves communicated with the second ball hole and the fourth ball hole and elastic linkage parts arranged in the connecting grooves and connected with the second ball hole and the fourth ball hole. The anti-theft ball lock is provided with the two ball groups, the elastic linkage parts making the corresponding ball groups linked mutually are arranged between the corresponding ball groups to prevent technical lock opening, and the thievery prevention performance of the lock is improved.

The invention discloses an anti-theft mobile phone shell for a mobile phone, and belongs to the technical field of mobile phone accessories. The anti-theft mobile phone shell for the mobile phone comprises an outer shell and an earphone hole, wherein the earphone hole is formed in the side wall of the short side of the outer shell; a first mounting groove communicated with the earphone hole is further formed in the side wall of the short side of the outer shell; a second mounting groove communicated with the first mounting groove is formed in the side wall of the long side of the outer shell;a connecting piece is fixedly arranged in the second mounting groove; the connecting piece comprises a sleeve and a touch pressing block; the sleeve is embedded into the inner wall of the second mounting groove; the touch pressing block is slidably connected into the sleeve; and a limiting clamping ring matched with the second mounting groove is fixedly arranged at the end of the touch pressing block. An earphone plug is fixedly connected with or separated from the mobile phone shell by a manual operation, so that when the mobile phone shell is fixedly connected with the earphone plug, the attention of a user can be attracted to a great extent, and the risk that a mobile phone is stolen is reduced; in addition, a user can separate the earphone plug from the mobile phone shell by touching and pressing the touch pressing block.

The invention discloses intelligent power environment monitoring equipment. The equipment mainly comprises a transportation platform; one side of the top surface of the transportation platform is fixedly connected with a first supporting frame; the middle part of the top surface of the first supporting frame is fixedly connected with a limiting pipe; a threaded pipe is slidably connected into the limiting pipe; the middle of the inner wall of the first supporting frame is fixedly connected with a first motor; and the output end of the first motor is fixedly connected with a lead screw. The equipment has the advantages that the threaded pipe is slidably connected into the limiting pipe, the output end of the first motor is fixedly connected with the lead screw, the lead screw is in threaded connection with the threaded pipe, the threaded pipe is slidably connected with the limiting pipe, two limiting strips are slidably connected with limiting grooves correspondingly, and when the first motor is powered on to operate, the lead screw is driven to rotate, the lead screw and the threaded pipe can rotate relatively, the threaded pipe can extend conveniently, the relative height of a protective shell can be adjusted conveniently, and the purpose of adjusting the monitoring height is achieved.

The invention relates to the technical field of valve production, in particular to an automatic control ball valve with an in-advance pressure relief function. The automatic control ball valve comprises a ball assembly, a valve assembly, a driving device and a control device. The ball assembly comprises an outer ball and an inner ball which are in rotating fit. The valve assembly comprises a middle valve and two connecting valve pipes. Valve seats are arranged at the ends, close to the middle valve, of the two connecting valve pipes correspondingly. The driving device comprises a rotating mechanism used for driving the ball assembly to rotate and a limiting mechanism used for limiting the ball assembly. The control device comprises a controller and a sensor assembly electrically connectedwith the controller. The automatic control ball valve has the beneficial effects that the problem of large friction force during in-advance pressure relief can be solved, opening and closing of the automatic control ball valve are achieved, operation of workers is omitted, and the opening and closing efficiency of the ball valve is improved.