77results about How to "Avoid accidental rotation" patented technology

The utility model belongs to the technical field of helmet, especially relates to a helmet, including helmet main part, the rotatory setting of face mirror has on helmet main part, face mirror can rotate to the front side of helmet main part and make face mirror be in the use state, face mirror also can rotate to the upper portion of helmet main part and make face mirror be in the storage state, the rotatory setting of helmet main part still has the jaw guard, the jaw guard is eccentric with face mirror Setting, the jaw guard can cross face mirror and overturn to the back side of helmet main part, thereby make helmet can be used as half helmet, the jaw guard also can cross face mirror and overturn to the front side lower portion of helmet main part, thereby make helmet can be used as full helmet, the driving part for driving face mirror movement is set up on the jaw guard, when face mirror is in the use state, the driving part can drive face mirror to rotate to the storage state, the utility model's purpose lies in providing a kind of helmet that the user uses conveniently.

The utility model discloses a reactor quick cover dismounting device based on titanium sponge production, which comprises an upper cover, a sealing disc, a push block, a locking mechanism and the like, and the sealing disc can quickly compress and loosen the upper edge of a reactor through the matching of a driving disc and a sliding block in the locking mechanism; the device is ingenious in design and easy and convenient to operate, locking and unlocking can be completed only by rotating the hand wheel, and the cover unloading efficiency is greatly improved; meanwhile, the sealing disc ensures good sealing performance of the reactor at high temperature and high pressure, material leakage is effectively prevented, and production safety and stability are improved.

This utility model relates to the technical field of polyurethane foam molding equipment, and discloses a multi-cavity synchronous pressure molding mold for polyurethane foaming. It includes a mounting frame, a lower mold located in the middle of the mounting frame, and fixed rods fixedly connected to both ends of the lower mold. A drive assembly is located at the left end of the mounting frame, and a hydraulic rod is fixedly connected to the top of the mounting frame. This utility model uses a motor to drive a worm gear to rotate. Because the worm gear meshes with a worm wheel, the worm wheel rotates, causing the fixed rods to rotate on the inner wall of the mounting frame, thus tilting the lower mold. When the lower mold rotates, a support rod slides on the inner wall of an arc-shaped groove. Then, the output end of a cylinder pushes a fixed plate upwards, causing several extension rods and push plates to move. The push plates push out the polyurethane product from the molding cavity. Due to the tilt of the lower mold, the polyurethane product falls into a collection box, achieving rapid unloading and improving production efficiency.

The utility model discloses a high-precision double-adjustment ball valve, and relates to the field of valves. The high-precision double-adjustment ball valve comprises a valve body and two sets of spherical valve elements arranged in the valve body, valve rod pieces are installed at the top ends of the spherical valve elements, a movable handle piece is arranged on the outer surface of the valve body and located between the two sets of valve rod pieces, and the movable handle piece comprises a rotating arm, a worm gear, a hexagonal pipe and a worm. During use, the rotating arm rotates with the supporting seat as the axis, so that the supporting ring rotates to the top of any valve rod piece, then the hexagonal pipe is pushed downwards in the worm wheel, the hexagonal pipe is arranged on the outer surface of the outer hexagonal column in a sleeving mode, at the moment, the handle is held by one hand, the adjusting rod is rotated by the other hand, and the worm drives the worm wheel to rotate; and the top of the other group of valve rod pieces is not provided with a rotatable holding part, so that mistaken touch rotation of non-target valve rod pieces can be effectively avoided, and the valve rod piece is convenient to use.

The utility model discloses a novel digital liquid level measuring instrument which comprises a storage tank, a measuring instrument body is arranged on the storage tank, the bottom end of the measuring instrument body is connected with a digital display, and an installation mechanism is arranged between the measuring instrument body and the storage tank. The mounting mechanism comprises a plug bush, a mounting sleeve, movable grooves, clamping blocks, clamping grooves, a mounting plate, a push spring, a push plate, a rotating sleeve, an abutting block, a sealing gasket, a sealing ring and a sealing groove, the plug bush is fixed to the bottom end of the measuring instrument body, the mounting sleeve is fixed to the bottom face of the storage tank, the movable grooves are distributed in the outer wall of the mounting sleeve, and the clamping blocks are movably arranged in the movable grooves. The rapid installation of the measuring instrument is realized, the accurate installation position is ensured through the cooperation of a positioning block and a positioning hole, a push spring pushes a push plate to drive a clamping block to be clamped with a clamping groove to form preliminary fixation, a rotating sleeve drives an abutting block to push the clamping block to realize further locking, and meanwhile, a multi-sealing structure of a sealing gasket, a sealing ring and a sealing groove is matched.

The utility model relates to a kind of burner for rotary kiln temperature rising, including gas pipe, nozzle, hollow column, locking column and spray head, the position at the inside of gas pipe and close to one side end part is fixedly connected with positioning ring, annularly is opened with through-hole in the surface of gas pipe and close to the side of positioning ring, the surface of gas pipe is communicated with air pipe, nozzle is movably inserted in the inside of gas pipe and close to the end of positioning ring, installation slot is opened in the surface of nozzle and the position corresponding through-hole, first sleeve is fixedly connected in the inside of installation slot, the central fixed connection of second sleeve is in the bottom of the inner wall of first sleeve, hollow column passes through through-hole and can be detachably inserted in the inside of first sleeve, locking column passes through the inside of hollow column and can be detachably inserted in the inside of second sleeve;The utility model eliminates the complexity of multiple hole positions alignment in traditional butt joint process, greatly reduces the time needed for installation.

The utility model discloses a multi-angle plug-in type wiring terminal, which comprises a base, an angle adjusting assembly is arranged on the base, the angle adjusting assembly comprises two mounting seats, an adjusting rod, a rotating plate, a fixing hole and a stabilizing plate, the mounting seats are arranged on the base, the adjusting rod is rotatably connected to the mounting seats, the fixing hole is arranged on the adjusting rod, and the stabilizing plate is arranged on the adjusting rod. The adjusting rod penetrates through one of the mounting seats, the rotating plate is connected to one end of the adjusting rod, the fixing holes are uniformly formed in the rotating plate, the stabilizing plate is mounted at one end of the mounting seat, a plugging assembly is arranged on the base, and the plugging assembly comprises an adjusting seat, a fixing terminal and a push-pull plate. The adjusting seats are uniformly mounted on the adjusting rod, the fixed terminals are connected to the bottoms of the adjusting seats, and the push-pull plate is slidably connected to the inner sides of the fixed terminals, so that the technical problem that the structural design of an existing wiring terminal is relatively fixed from the aspect of limitation of angle adjustment mentioned in the background technology is solved.

The utility model discloses a convenient bed guardrail, through being formed with independent guardrail opening between two vertical columns of each guardrail main part, equivalent to setting the passable passageway on the left, right, front (or rear) three sides of bed body, and user can choose the guardrail opening direction freely according to the actual scene, and thoroughly get rid of the path limitation of "single -sided opening", simultaneously, three -sided guardrail frame covers the main activity area (such as left and right sides prevent rolling, front end prevent turning over and falling) of bed body, and the protection range is more comprehensive, to satisfy the double demand of user to security and use convenience.

The utility model belongs to the technical field of truck hydraulic tail board, concretely relates to a truck hydraulic tail board of multi -angle locking, include, tail board installation subassembly, contain the ground plate of car, car body, tail board and the bottom platform for component link, tail board turnover subassembly contains axle rod one, bearing one, is used for the hydraulic cylinder one of turnover drive, is used for telescopic adjustment piston rod one, hinged member, link plate, both sides of bottom platform all are fixedly installed with two axle rod one of symmetrical distribution, the surface of axle rod one is provided with bearing one. The scheme is through the hydraulic cylinder drive piston rod telescopic in tail board turnover subassembly, cooperate hinged member and link plate drive tail board and carry out turnover action, the rotary connection of hydraulic cylinder end and bottom platform ensures the smooth of turnover process, and tail board lifting subassembly is driven big arm rotation through drive shaft, and the telescopic leveling function of hydraulic cylinder is combined, so that tail board can also carry out lifting movement after horizontal opening.

The utility model relates to the field of transformer, especially is a kind of transformer structure for power module, including transformer body, the both sides of transformer body are provided with installation component, the lower end of two installation components is fixedly connected with adjusting assembly, two adjusting assemblies are respectively provided with wire slot and adjusting groove, winding copper wire is provided in wire slot, two-way screw rod is rotatably connected in adjusting groove, the both sides of two-way screw rod are all screw thread connection with electric block, the lower end surface of two electric blocks is all fixedly connected with pin, the upper end surface of two electric blocks is all fixedly connected with electric column.The utility model, by setting adjusting assembly, wire slot, adjusting groove, limit board, limit slot, rectangular opening, winding copper wire, two-way screw rod, electric block, pin and electric column structure mutually cooperate, by the free adjustment of pin spacing, the installation demand of different PCB can be better satisfied.

The utility model relates to the technical field of civil air defense doors, and discloses an adjustable light supporting assembly for a civil air defense door, which comprises a frame, a door body is movably hinged in the frame, and a reserved groove is arranged at the bottom end of the right side in the door body. According to the adjustable light supporting assembly for the civil defense door, the gear, the supporting rack, the anti-skid supporting block, the rotating handle and the rotating shaft are arranged, the rotating handle is rotated, the rotating handle drives the gear to rotate through the rotating shaft, the gear and the supporting rack are matched, and the anti-skid supporting block is fixedly connected to the bottom end of the supporting rack; due to the fact that the gear rotates, the supporting rack can drive the anti-skid supporting block to descend, the anti-skid supporting block can make contact with the ground to support the door body, and the situation that one side of the door body is suspended to affect the service life is prevented; the problems that the height of a supporting assembly is inconvenient to adjust according to requirements, and opening and closing of the civil defense door are easily affected are solved.

The invention discloses a four-way stretch fabric tensile strength detection device, and relates to the technical field of fabric detection. The device comprises a box body, the top of the box body is fixedly connected with a workbench panel, the top of the workbench panel is provided with a control panel, the box body is internally provided with a bidirectional traction driving mechanism, the top of the box body is provided with a self-locking winding mechanism, and the top of the box body is provided with a transverse stretching mechanism. Through the arrangement of the bidirectional traction driving mechanism and the self-adaptive floating clamping mechanism, the bidirectional traction driving mechanism drives a driving synchronous belt wheel to rotate through a driving motor, then a driven synchronous belt wheel and a lead screw are driven through a synchronous belt to rotate, a lead screw nut is arranged on the lead screw in a sleeving mode to do linear motion, and a traction sliding block moves up and down along with the lead screw nut; the longitudinal stable traction of the cloth is realized, the clamping force can be automatically adjusted according to the tension state of the cloth, and the accuracy and the stability of the test are improved.

The application discloses a crusher and recycled concrete system, including a machine body, a support installed at the bottom end of the machine body, a support assembly rotatably connected to the support, and a support leg arranged in the support assembly, the support assembly includes a first part, a second part and a third part, the first part is rotatably connected to the support, the second part and the third part are symmetrical about the first part, and the second part and the third part are connected to the first part. Due to the design of the force transmission rod in the mounting block, the gear connection between the first spring and the support column and the fixed column, etc., the crusher performs well when facing uneven ground. Even if one side of the support leg first contacts the ground, the distance between the support column and the support changes, through the action of gear transmission and elastic sheet, the effective transmission of force and the normal operation of the support assembly can still be ensured, various uneven work sites are effectively adapted, and the influence of ground conditions on equipment use is reduced.

The utility model relates to the field of locks, in particular to a lock structure which comprises a lock box, a panel is arranged at the through position of one side of the lock box, a rectangular groove is formed in the panel, a locking assembly penetrating through the rectangular groove is arranged in the lock box, through grooves penetrating into the lock box are further formed in the two sides of the lock box, and a limiting assembly linked with the locking assembly is arranged in the lock box. The lock cylinder, the shifting wheel, the shifting disc, the shifting shaft and other components are precisely matched, so that cooperative work of the locking assembly (the coupler knuckle) and the limiting assembly (the heaven and earth hook) is achieved, and the lock cylinder, the shifting wheel, the shifting disc, the shifting shaft and other components are matched precisely. And the door lock is ensured to be operated smoothly, safely and reliably in the locking and unlocking processes.

The utility model discloses a land area measuring device which comprises a point collecting rod, one side of the point collecting rod is provided with a mounting frame, the mounting frame is provided with a collector, one side of the mounting frame is provided with an adjusting device, the adjusting device comprises a fixed sleeve, a control panel, a switching sleeve, a control sleeve, a control groove, a switching groove, a switching block, a control block and a movable block, the control panel is connected to one side of the control sleeve, and the movable block is connected to the other side of the control sleeve. The control groove is formed in the outer side of the switching sleeve, the switching groove is formed in the inner side of the switching sleeve, the control block is arranged on the inner side of the control plate along a spiral line, the movable block is installed on one side of the switching block, and the locking mechanism is installed on the outer side of the fixed sleeve and comprises a shifting sleeve, a rotating plate, a round hole, an arc-shaped groove, a shifting block, a shifting spring, an ejector rod, an ejector plate and a fixed block. The circular hole is formed in one end of the arc-shaped groove, the shifting spring is connected with the two adjacent shifting blocks, the top plate is installed on the ejector rod, and the fixing blocks are installed on the outer side of the fixing sleeve. The height of the collector is flexibly adjusted, and the structural stability in the using process is guaranteed.

The utility model discloses a wind turbine generator hub automatic locking device, a main body assembly comprises a shell, a supporting seat, a driving piece, a guide disc, a guide piece and a friction plate, the supporting seat is fixed on the inner wall of the shell, the driving piece is arranged on one side of the supporting seat, the guide disc is rotatably connected to one side of the supporting seat, and the friction plate is arranged on the driving piece. The guide piece is arranged in the guide disc, and the friction plate is arranged on one side of the guide piece. The wheel hub has the advantages that the driving piece is arranged to drive the guide disc to rotate, the guide disc drives the friction plate to move to the needed distance through the guide piece, the friction plate is attached to the transmission rod, and therefore the effect of locking and adjusting the wheel hub body is achieved; due to the special shape of the ratchet tooth groove, the pawl can only move in one direction, and therefore the effect of locking the hub body in one direction is achieved.

This utility model relates to a fixing fixture for machining starter stators, belonging to the field of starter stator machining technology. It includes a fixture base and a positioning table, with fixture components mounted on the positioning table. The positioning table includes a frustum mounted on the fixture base. This fixing fixture for machining starter stators has three positioning fixtures evenly distributed circumferentially. Through synchronous transmission via gears and racks, it ensures that the center of the stator base coincides with the rotation center of the frustum. An M-shaped rubber pad accommodates minor deformations on the stator base surface, preventing indentations or damage caused by rigid clamping. A rotary cylinder enables rapid clamping or releasing. A dual-brake motor, in conjunction with a control system, precisely controls the rotation angle of the frustum, reducing manual adjustment time. The fixture components and drive components are installed independently, allowing for adaptation to different stator base specifications by replacing the positioning fixtures, thus offering strong versatility. The motor has a built-in brake function, locking the frustum position during power failure to prevent accidental rotation during machining, improving safety.

The utility model discloses a pugging de-ironing separator, which comprises a rotating plate, a bottom frame, a primary screening mechanism, a magnet clamping mechanism and a clamping auxiliary mechanism, the primary screening mechanism comprises a driving motor and a screening box, the magnet clamping mechanism comprises a bottom fixing pipe and a clamping rod, and the clamping auxiliary mechanism comprises an outer rotating sleeve and a positioning ring. The eccentric wheel is driven by the driving motor to rotate, rotary motion is converted into reciprocating motion of the screening box through the push-pull rod, efficient screening of pug is achieved, large waste materials can be effectively separated from the pug, and the problem that in a traditional device, large waste materials are difficult to screen is solved. The magnet clamping mechanism adopts the combined design of a bottom fixing pipe, a clamping pipe and a clamping rod, and through the rotary clamping mode of an inner supporting frame and an embedded rotating block and the continuous pressure provided by a compression spring, rapid mounting and dismounting of a magnet plate are achieved.

The utility model discloses a pin assembly and a plug. The pin assembly comprises a first shell, a rotating shaft, a pin and a limiting assembly, the first shell is provided with a containing groove and a receding opening; the rotating shaft is located in the containing groove and rotationally connected to the first shell in the first axial direction, the circumferential side face of the rotating shaft comprises a positioning face, and the positioning face comprises a first abutting face and a second abutting face which are arranged in the circumferential direction of the rotating shaft; the pin penetrates through the avoidance opening, and the rotation track of the pin is provided with a storage position and a first unfolding position; when the pin is located at the storage position, the extension direction of the pin is a first direction, and the limiting assembly abuts against the first abutting surface; when the pin is located at the first unfolding position, the extension direction of the pin is a second direction, the limiting assembly abuts against the second abutting face, and the included angle alpha formed by the first direction and the second direction is larger than 0 degree and smaller than 90 degrees. And the storage volume of the plug can be reduced, so that the plug is more convenient to carry and store.

The present application relates to a hand clamping prevention detector, comprising a shell and a detection assembly in the shell, the detection assembly comprising a circular turntable, a door movable relative to the turntable, a first motor and a second motor, the turntable being provided with a plurality of test channels, each test channel being capable of inserting a detection card, the turntable being driven to rotate by the first motor and in turn driving the plurality of test channels to rotate, the detection card being capable of being inserted into the test channel when the door is opened, the door preventing the detection card from being inserted into the test channel when the door is closed, the detection assembly further comprising an elastic element for driving the door to close, the second motor being used for driving the door to open when the second motor is forward rotated and being used for offsetting part of the elastic force of the elastic element during the closing process of the door when the second motor is reverse rotated. The detector has a hand clamping prevention structure, preventing the fingers of the operator from being injured by the detector during the operation process, and avoiding the occurrence of medical accidents in the detection and diagnosis field. The present application has a simple structure, low cost and low failure.

The utility model provides an assembly type high-pressure cleaning machine which comprises an installation frame, a water bucket is arranged on the top of the installation frame, a booster pump is arranged on the right side of the water bucket, and the bottom of the booster pump is fixedly connected with the top of the installation frame. The bottom of the water bucket fixedly communicates with a first connecting pipe, the other side of the first connecting pipe fixedly communicates with the input end of a booster pump, the output end of the booster pump fixedly communicates with a water conveying pipe, the side, away from the booster pump, of the water conveying pipe fixedly communicates with a three-way pipe, and the interior of the three-way pipe is rotationally connected with a hollow column. The bottom of the hollow column communicates with the interior of the conveying pipe through a three-way pipe. By arranging the mounting frame, the water bucket, the booster pump, the first connecting pipe, the water conveying pipe, the three-way pipe, the hollow column, the winding disc, the hose, the rotating frame, the anti-rotating structure and the spraying structure, the problems that an existing high-pressure cleaning machine cannot adapt to multi-scene application and is poor in stability are solved.

The utility model discloses a locking structure of butterfly valve handle, including the connecting frame of fixed in the top of butterfly valve, one side of connecting frame top is provided with rotating mechanism, and the other side of connecting frame top is provided with the bayonet lock mechanism, the bayonet lock mechanism includes the mount pad of fixed on the outer wall of connecting frame top, and the inside of mount pad is slidably provided with the bolt, and one side of bolt is fixedly connected with connecting rod no.

The anti-falling air conditioner air outlet device comprises an air conditioner body, the front face of the air conditioner body is connected with a frame in a clamped mode, an air outlet channel is formed in the air conditioner body, the front face of the frame is connected with a front blocking cover in a clamped mode, the inner wall of the frame is connected with an air blocking plate through a rotating shaft, and the air blocking plate is connected with the self-locking type air guiding plate. A supporting frame is installed in the air conditioner body, an anti-falling adjusting assembly is installed in the supporting frame, and a self-locking assembly is installed on the other side of the supporting frame. According to the anti-falling air conditioner air outlet device with the self-locking type air guide plate, the self-locking assembly adopts the innovative bidirectional clamping structure design, the self-locking assembly is composed of the limiting groove, the spring buckle and the anti-loose gasket, a mechanical locking state is formed, the design can effectively prevent the air guide plate from accidentally rotating, sundries and winged insects are prevented from entering, and the anti-falling air conditioner air outlet device is safe and reliable. And children are prevented from touching by mistake, and the situation of angle deviation or loosening and falling is avoided.

This utility model discloses an intelligent hydraulic butterfly valve, including a butterfly valve body, a butterfly plate disposed inside the butterfly valve body, the butterfly plate being mounted on a valve stem, the top end of the valve stem penetrating through the outer wall of the butterfly valve body to the outer shell, a rotating handwheel being connected to the outer shell, a limiting component being installed on the outer wall of the outer shell, the limiting component being provided with an installation mechanism, the limiting component being fixed to the outer wall of the outer shell through the installation mechanism, the limiting component limiting the rotation of the rotating handwheel; by setting the limiting component, in the non-use state, the operator rotates the limiting groove inside the rotating handwheel to the upper end, and after loosening the pull rod, the return spring pushes the limiting rod to engage with the limiting groove to form a fixed position, which can effectively prevent the handwheel from rotating accidentally due to external impact.

The utility model relates to microphone support technical field discloses a kind of multidirectional rotation microphone support device, including support rod and fixed rod, support rod top is connected with rotating assembly, and rotating assembly top is connected with guiding assembly;Rotating assembly includes installation box, and installation box bottom is fixedly connected at support rod top, and worm is rotatably connected in installation box interior, and worm one end passes through installation box fixedly connected with rotating block;The utility model is compared with prior art's advantage is at:after fixed rod is adjusted to suitable angle, realize reverse self-locking, prevent microphone from accidental rotation due to gravity, touch or vibration, improve the stability of multidirectional rotation microphone support device;The movement path of rotating assembly can be physically constrained, ensure that microphone moves smoothly along preset trajectory when rotating in multiple directions, avoid jam or deviation, improve the accuracy of multidirectional rotation microphone support device.

The utility model relates to a seat-free handle and a lockset, which belong to the technical field of door locks, and comprise a rotating wheel and a rotating wheel seat, one end of the rotating wheel is provided with a clamping part in a protruding manner, and the peripheral side of the clamping part is provided with a plurality of clamping holes and unlocking holes at intervals; a first assembling groove is concavely formed in one end of the rotating wheel seat, a plurality of assembling holes are formed in the side wall of the first assembling groove, elastic pieces and clamping balls are arranged in the assembling holes, one end of each elastic piece acts on the bottom of the corresponding assembling hole, and the other opposite end of each elastic piece acts on the corresponding clamping ball; when the clamping bead enters the clamping hole under the elastic action of the elastic piece, the rotating wheel base and the rotating wheel are in a clamping state, at the moment, the rotating wheel can be rotated, the side wall of the clamping part extrudes the side, facing the assembly hole, of the clamping bead, the clamping bead leaves the clamping hole and enters the unlocking hole to achieve an unlocking state, and the depth of the clamping hole is larger than that of the unlocking hole.

This utility model relates to the field of inverter installation technology and discloses a mounting bracket for micro-inverters. The bracket includes a mounting frame with a disassembly mechanism on its top and a locking mechanism on its right side. The micro-inverter body is mounted on top of the disassembly mechanism, which includes a long slot fixedly connected to the top of the mounting frame. This mounting bracket for micro-inverters, through its disassembly mechanism, enables tool-free and highly efficient disassembly of the micro-inverter body. The user cranks a handwheel to drive a worm gear, which in turn drives a cam, releasing the mechanical limit on the insertion sleeve. This allows the entire inverter unit (including the long protrusion, middle protrusion, and insertion sleeve) to be safely pulled out of the long slot by hand. The entire process requires no external tools, avoiding the loss and corrosion of small parts (such as bolts) and greatly improving the efficiency and convenience of maintenance and repair, solving a long-standing on-site disassembly problem.

This utility model relates to the field of CNC lathe technology and discloses a CNC lathe spindle box structure, including a spindle box body and a base plate. The base plate is fixedly connected to the bottom of the spindle box body. A drive shaft and a spindle are rotatably connected inside the spindle box body. The spindle shaft extends to the outside of the spindle box body and is fixedly connected to a three-jaw chuck. An opening is provided on the inner wall of the top of the spindle box body. A cover plate is inserted into the inner wall of the opening of the spindle box body. Multiple drive gears are fixedly sleeved on the drive shaft shaft, and multiple transmission gears are fixedly sleeved on the spindle shaft shaft. The rotating handle provided by this utility model drives the cam chuck to rotate. The eccentric structure of the cam causes its outer peripheral surface to press against the inner wall of the chuck groove of the spindle box body. The long axis of the cam chuck is aligned with the chuck groove. Anti-slip rubber strips provide friction to ensure reliable sealing of the cover plate. The cover plate can be removed when the rotating handle is rotated until the short axis of the cam chuck is aligned with the chuck groove.

This utility model relates to the field of wearable devices, and particularly to a smart ring. The smart ring includes an outer shell and an inner shell, which are connected and enclose to form a wearing hole. The wearing hole is configured to allow a finger to pass through so that the smart ring can be worn on the finger. The inner peripheral wall of the inner shell has at least one pair of anti-rotation groups, each pair of anti-rotation groups including two anti-rotation angles. The at least two anti-rotation angles are spaced apart along the circumferential direction of the inner shell, and the two anti-rotation angles are configured together to prevent the smart ring from rotating on the finger. The main objective of this utility model is to provide a smart ring that reduces the likelihood of the smart ring rotating on the finger.

This utility model relates to the field of manual trolley technology, and more particularly to a trolley for internal pipeline flaw detection. It includes a first placement frame with a handle fixed to one end. A second placement frame is slidably connected to the inner side of the first placement frame away from the handle. Both the first and second placement frames are equipped with fixing mechanisms for securing the detection equipment. Telescopic rods are fixed to both sides of the bottom of the first placement frame near the handle. This utility model provides a trolley for internal pipeline flaw detection. Through the fixing mechanisms, the X-ray machine can be more securely fixed to the trolley, reducing the risk of the X-ray machine slipping due to vibration or tilting during movement or trolley travel. The locking mechanism prevents the knob from accidentally turning due to trolley shaking, bumps, or slight external contact, thus preventing the fixing mechanism from loosening and ensuring that the X-ray machine is always firmly fixed to the trolley, guaranteeing smooth inspection work.