84results about How to "Self-locking and reliable" patented technology

Disclosed is a hydraulic clamping device with a powerful self-locking function. The hydraulic clamping device comprises a base body. A cover body is arranged on the front end face of the base body. Guiding square holes are formed in the upper end and the lower end of one side wall of the base body. An oil cylinder is arranged in the base body in a suspended mode. Piston rods arranged symmetrically extend out from the upper end and the lower end of the oil cylinder respectively. The head of each piston rod is connected with a front connecting rod and a rear connecting rod through a piston rod pin shaft. The other end of each rear connecting rod is connected with a hinged support arranged on the inner wall of the base body through a hinged support pin shaft. The other end of each front connecting rod is connected with an inclined wedge sliding block through a sliding block pin shaft. Each inclined wedge sliding block is connected with an inclined wedge pressing block through a connecting spring in a matched mode. Each inclined wedge sliding block and the corresponding inclined wedge pressing block are installed in the corresponding guiding square hole together. The base body is provided with spring installation holes. Supporting springs are installed in the spring installation holes. Support sliding blocks are installed on the supporting springs. Each support sliding block is pressed on the top surface of the corresponding inclined wedge pressing block. The hydraulic clamping device has a dual mechanical self-locking function of inclined wedge self-locking and connecting rod self-locking, so that the hydraulic clamping device is stable and reliable, and capable of achieving self-locking clamping of clamping force which is greater than 100 tons.

A radial snap-on capture lock for a spacecraft and a working method thereof are provided, the capture lock includes an active end mounted on the active aircraft and a passive end mounted on the passive aircraft, the passive end is of a conical structure, the active end includes a housing assembly, Drive Assembly, Drive assembly and latch assembly, the housing assembly is used for supporting, connecting the drive assembly, Drive assembly and latch assembly, The drive assembly drives the drive assembly to convert the rotary motion into linear motion, the drive assembly controls the radial reciprocating motion of the latch assembly, the latch assembly clamps the passive end when the latch assembly radially extends out of the housing assembly, and the latch assembly releases the passive end when the latch assembly radially retracts the housing assembly. The invention solves the problems of complex system, large quality, poor universality and the like of the prior docking mechanism technology, and realizes the capture, locking and release of low disturbance in the docking process of the aircraft.

The invention relates to a plastic bottom board logistic trolley, comprising a left fence and a right fence; the left fence is locked with a rear fence by a wedge-shaped self-lock connection device; a left fence machine head is arranged at the lower bottom edge of the left fence; a right fence machine head is arranged at the lower bottom edge of the right fence; a bottom board is locked with the left fence machine head and the right fence machine head by a bottom board pin rod rotary self-lock device; the bottom board pin rod rotary self-lock device comprises a rotary rod; when the middle part of the rotary rod is rotated relative to the bottom board, two ends of the rotary rod are clamped with or separated from the left fence machine head and the right fence machine head. According to the plastic bottom board logistic trolley adopting the structure, the bottom board pin rod rotary self-lock device can lock the left and right fences with the bottom board, body mechanics is combined, when being lifted by a handle, the bottom board is naturally separated from the left and right fences, and when being descended, the bottom board is locked with the left and right fences, so the self-lock is very reliable; the wedge-shaped self-lock connection device can effectively lock the left and right fences, the manufacturing cost is low, and the folding logistic trolley is convenient to convey and is firm in connection during use.

A starter motor including an electric motor (11) mechanically coupled to a starter (26) including a driver (33), a hitch member (45) for hitching the pinion (32) to the driver (33) via a free-wheel mechanical coupling (34) in the form of a friction clutch, and a priming spring (R1) built into the starter (26) between the hitch member (45) and the driver (33), whereby the two friction surfaces (37, 40) are spaced apart when the friction clutch is in the inoperative position, and a resisting torque is frictionally generated to enable reliable priming of the self-locking function of the free wheel (34).

The invention provides a space on-orbit refueling self-locking type butt-joint interface device, and belongs to the technical field of space operation. The device comprises a to-be-injected interfaceand a refueling interface, wherein the refueling interface is located in the center position of a refueling platform at the tail end of a refueling mechanical arm, and the to-be-injected interface islocated on a refueling platform of the outer wall of a to-be-injected spacecraft liquid storage tank. The to-be-injected interface and the refueling interface have self-sealing functions in the processes of pre-refueling introduction, refueling and post-refueling separation, no liquid leakage exists in the whole action process, in addition, a self-locking special structure formed among a steel ball, a refueling interface outer shell and an inner taper sleeve can guarantee reliable locking and smooth separation in the refueling process, the device can achieve double-self-sealing under-pressingrefueling, no liquid leakage and sealing are achieved in the whole process, self-locking is reliable, separation is rapid and safe, the phenomenon of being stuck is avoided, and a large reference value is provided for solving the core problem of interface design in the on-orbit refueling field.

The invention relates to a double gate valve for vacuum equipment. The double gate valve comprises a valve body, a driving device, a stopping device and a valve device, wherein the driving device and the valve device are movably arranged on the valve body; the driving device is connected with the valve device to form a parallelogram mechanism; the stopping device is arranged on the valve body. The driving device can drive the valve to open or close the valve device. The double gate valve can be rapidly opened, and can be reliably locked. Moreover, the plane surface of the valve has zero friction, so the double gate valve has long service life.

The invention discloses a single-use anti-acupuncture insulin injection pen, which comprises a casing (10), a needle seat (20), an injection needle (21), a needle tip protection sleeve (30), an elastic member (1), and a sliding sleeve (50) and a retaining claw (60), wherein the sliding sleeve (50) sleeves the needle seat (20), and the retaining claw (60) is fixedly connected to the needle seat (20); a claw portion (62) at least partially is located outside the sliding sleeve (50) and flared outward; when the needle tip protection sleeve (30) is pressed against the needle seat (20), the slidingsleeve (50) is pressed to be deformed and the needle tip protection sleeve (30) is hooked with the sliding sleeve (50); when the pressure is lost, the elastic member (1) pushes the needle tip protection sleeve (30) to move, and the sliding sleeve (50) is disengaged; and the retaining claw (60) is restored to its original shape and the sliding sleeve (50) and the needle tip protection sleeve (30)are prevented from moving downward. The injection needle can be self-locked reliably and safer after use.

The invention relates to a drawer self-locking mechanism of a tool box cabinet, belonging to the technical field of hardware appliances. The tool box cabinet comprises a box body, a guide rail pipe, a locking bar, a key driving locking shaft and drawers, wherein the guide rail pipe is fixed at one side of the box body towards the drawer; the locking bar is matched with the guide rail pipe in a sliding manner and is provided with locking piece hook holes; the key driving locking shaft is arranged on the box body in a pivoted manner and is connected with the locking bar; the drawers are matched with drawer cavities of the box body in an inserting and pulling manner; drawer back plates of the drawers face to the locking bar; the drawer self-locking mechanism comprises locking piece seats and locking piece hooks; each locking piece seat is fixed at one side of each drawer back plate towards the locking bar and corresponds to each locking piece hook hole; and the locking piece hooks are arranged on the locking piece seats in a matching manner and are matched with the locking piece hook holes. The drawer self-locking mechanism is characterized by also comprising a spring; and one end of the spring is arranged on the locking piece seat in a bearing manner, and the other end of the spring is arranged on the locking piece hook in a bearing manner. The drawer self-locking mechanism has the advantages of locking safety, simple whole structure, convenient installation and use and good matching with the box body.

The invention relates to an automatic opening and closing device for hank reels of a hank reeling machine. The hank reels are movably connected with a spindle through a parallelogram mechanism; an AB connecting rod in the parallelogram mechanism is connected with one push rod through a BE driving connecting rod; each push rod is fixedly connected with a nut which is connected with a belt pulley through a screw rod; and the belt wheels are synchronous toothed belt wheels. According to the automatic opening and closing device, rectilinear motion of a screw rod pair is used, the four-bar linkage hank reels are driven by the push rods, and expansion and reduction of the outer diameter of each reel are finished. The automatic opening and closing device has the advantages that the motor-driven degree of automation is high, the reel positioning accuracy is high, and the self-locking is reliable; the reels can be positioned in multiple appointed positions, so that requirements for different reel circumferences of various yarns in hank reeling can be met flexibly; and the device is simple in structure, convenient to mount and low in cost.

The invention discloses a passive butt joint mechanism used for on-orbit assembling of large space antennas. The passive butt joint mechanism is composed of a male head and a female head; the male head is connected with a movable antenna module; the female head is connected with a fixed antenna module; and the male head can slide into the female head and pushes a steel ball through a switching shaft, the steel ball abuts against the inner wall of the female head to achieve locking, and therefore the movable antenna module and the fixed antenna module are fixedly connected. When the male head bears the reversed unlocking force or vibration, self locking of the steel ball can be ensured, and thus locking reliability is ensured. When unlocking is needed, a male head bolt is manually dismounted, and the male head and the female head can be conveniently separated. Passive butt joint and locking between the two antenna modules can be achieved, in the butt joint process, angle and position errors can be eliminated through the convex-concave matching design of the male head and the female head, and self locking can be ensured in a locking state.

The invention relates to an automatic opening and closing device for hank reels of a hank reeling machine. The hank reels are movably connected with a spindle through a parallelogram mechanism; an AB connecting rod in the parallelogram mechanism is connected with one push rod through a BE driving connecting rod; each push rod is fixedly connected with a nut which is connected with a belt pulley through a screw rod; and the belt wheels are synchronous toothed belt wheels. According to the automatic opening and closing device, rectilinear motion of a screw rod pair is used, the four-bar linkage hank reels are driven by the push rods, and expansion and reduction of the outer diameter of each reel are finished. The automatic opening and closing device has the advantages that the motor-driven degree of automation is high, the reel positioning accuracy is high, and the self-locking is reliable; the reels can be positioned in multiple appointed positions, so that requirements for different reel circumferences of various yarns in hank reeling can be met flexibly; and the device is simple in structure, convenient to mount and low in cost.

The invention discloses a manual self-locking pressing clamp for a columnar workpiece. The manual self-locking pressing clamp comprises a bottom plate, a first V-shaped groove cushion block and a second V-shaped groove cushion block and further comprises a first threaded sleeve, a first screw, a second threaded sleeve, a second screw, a first n-shaped support and a second n-shaped support, wherein the first threaded sleeve and the first screw are matched, and the second threaded sleeve and the second screw are matched. The first n-shaped support and the second n-shaped support are symmetrically arranged on the upper side of the bottom plate. The first threaded sleeve is fixedly arranged on the first n-shaped support. The first screw is arranged in the first threaded sleeve. A first V-shaped groove pressing head is rotationally arranged at the lower end of the first screw. The second threaded sleeve is fixedly arranged on the second n-shaped support. The second screw is arranged in the second threaded sleeve. A second V-shaped groove pressing head is rotationally arranged at the lower end of the second screw. The manual self-locking pressing clamp has the beneficial effects that the design is reasonable, workpiece clamping is reliable, reinforcement is large, and the self-locking performance is good; the structure is simple, operation is convenient, the service life is long, and the application range is wide; and the production cost is low, and usage and popularization are facilitated.

The invention discloses an underwater electromechanical release device driven by a two-stage force-amplifier. The underwater electromechanical release device is characterized in that when the underwater electromechanical release device works, a power source drives a worm wheel to rotate through a worm, the worm wheel drives a nut shaft to rotate through key connection, the nut shaft pushes a plugsleeve fixed on a shoulder joint of a mechanical arm to move downwards through a threaded pair inside the nut shaft, meanwhile, a socket sleeve is driven to slide downwards in a sealing sleeve, the nut shaft loses the suspension constraint on the plug sleeve when the plug sleeve moves to the end of the threaded pair, meanwhile, the plug sleeve and the sealing sleeve are unsealed, the mechanical arm is separated from an underwater robot under the action of gravity, and electromechanical release is completed. According to the underwater electromechanical release device, a worm wheel and worm pair and a lead screw and nut pair are connected in series to achieve two-stage force amplifying and self-locking, the release action required smaller power, and the self-locking connection is reliable;and the underwater electromechanical release device is suitable for underwater operation robots and can also be applied to other underwater electromechanical equipment.

The invention discloses a linear tapered wedge rope locking device. The device comprises a lifting steel wire rope, a rope locking device shell and wedge blocks, wherein the lifting steel wire rope penetrates through the rope locking device shell, the wedge blocks are wedged between the rope locking device shell and the lifting steel wire rope, a shell lining is arranged on the inner side of the rope locking device shell, and wedge block lining plates matched with the shell lining are arranged on the wedge blocks. According to the device, a low friction coefficient material is adopted to replace a conventional ball, and meanwhile, the sliding friction coefficient of the material is close to the original rolling friction coefficient and can reach 0.1 or below, so that the steel wire rope and the rope locking device reliably form self-locking, and meanwhile, the effective loading of the rope locking device is greatly improved, so that the risk that the steel wire rope is separated from the rope locking device due to the fact that the ball is damaged or wedges are deformed is avoided.

The invention discloses a portal hoist which belongs to the technical field of hydraulic equipment and comprises a main walking mechanism, wherein the main walking mechanism is arranged at the lower part of a bottom crossbeam of a portal crane and comprises at least four wheel sets, a pivoting support is arranged at the top of each wheel set, an inner rim and an outer rim of the pivoting support are respectively connected with the bottom crossbeam of the portal crane and the top plates of the wheel sets, and the pivoting supports and the wheel sets are driven to rotate through a swing mechanism fixedly connected with the bottom crossbeam. The wheel sets are driven to rotate through the swing mechanism so as to realize the turning of the wheel sets, thereby realizing the turning of the mainwalking mechanism of the portal crane, leading the portal crane to conveniently reach working sites on different straight lines for working, realizing the purpose that one portal hoist can carry outhoisting or equipment loading and unloading for the sluice gates of multiple buildings at different positions of one hydraulic and hydroelectric pivotal project, and greatly saving the project investment.

The invention relates to a drawer self-locking mechanism of a tool box cabinet, belonging to the technical field of hardware appliances. The tool box cabinet comprises a box body, a guide rail pipe, a locking bar, a key driving locking shaft and drawers, wherein the guide rail pipe is fixed at one side of the box body towards the drawer; the locking bar is matched with the guide rail pipe in a sliding manner and is provided with locking piece hook holes; the key driving locking shaft is arranged on the box body in a pivoted manner and is connected with the locking bar; the drawers are matchedwith drawer cavities of the box body in an inserting and pulling manner; drawer back plates of the drawers face to the locking bar; the drawer self-locking mechanism comprises locking piece seats andlocking piece hooks; each locking piece seat is fixed at one side of each drawer back plate towards the locking bar and corresponds to each locking piece hook hole; and the locking piece hooks are arranged on the locking piece seats in a matching manner and are matched with the locking piece hook holes. The drawer self-locking mechanism is characterized by also comprising a spring; and one end ofthe spring is arranged on the locking piece seat in a bearing manner, and the other end of the spring is arranged on the locking piece hook in a bearing manner. The drawer self-locking mechanism has the advantages of locking safety, simple whole structure, convenient installation and use and good matching with the box body.

The invention discloses an eccentric self-locking type clamping fixture which comprises a base, a first L-shaped clamping arm, a second L-shaped clamping arm and an eccentric wheel. A first installing seat and a third installing seat which are located on the upper side of the base are rotatably connected with the lower end of the first L-shaped clamping arm and the lower end of the second L-shaped clamping arm correspondingly. The inner side of the middle portion of the first L-shaped clamping arm is rotatably connected with one end of a pull rod through a second installing seat. The other end of the pull rod penetrates through an unthreaded hole in the middle of the second L-shaped clamping arm and then is rotatably provided with the eccentric wheel. A driving handle used for driving the eccentric wheel to rotate is fixedly installed on the outer side of the eccentric wheel. A first pressure foot and a second pressure foot which are used for increasing the stressed area of a workpiece are fixedly arranged at the open end of the first L-shaped clamping arm and the open end of the second L-shaped clamping arm correspondingly. The eccentric self-locking type clamping fixture has the following characteristics of being convenient to operate, high in clamping speed, high in efficiency, reasonable in design, large in compression force, reliable in self-locking, high in universality, wide in application range, simple and compact in structure and convenient to mount and dismount.

The invention discloses a novel sliding block type bidirectional overrunning clutch. The novel sliding block type bi-directional overrunning clutch comprises an outer ring and sliding blocks. An inner ring support and a driving shifting fork are arranged inside the outer ring and fixed through check rings, close to the two ends, inside the outer ring. The inner ring support is provided with semi-circular groove rolling channels. The working face of each sliding block is arranged in the corresponding semi-circular groove rolling channel and is in contact with the corresponding semi-circular groove rolling channel. Each pair of semi-circular groove rolling channels and the pairs of sliding blocks are configured in opposite directions. The sliding blocks are in series connection through a spring to form an annular shape, and the sliding blocks are arranged in an annular space between an outer ring inner hole rolling channel and the inner ring support. The driving shifting fork is provided with shifting fork protruding claws. Each shifting fork protruding claw is inserted into a space between the corresponding sliding blocks which are arranged in opposite directions. The clutch has the beneficial effects of being reliable in bidirectional self-locking, precise in positioning and stable in operation; no impact or noise is generated in the releasing process; and the clutch is high in transmission efficiency and long in service life. In mechanical transmission, the clutch can be used for preventing reverse rotation bidirectionally; bidirectional rotation of a driving end can drive bidirectional rotation of a driven end; and the purpose of precise positioning or torque transmission or overrunning is achieved.

The invention discloses a vehicle assembly method. Annular conveying lines are respectively arranged on the side of a main production line corresponding to all procedure positions; assembly parts needing to be assembled can be put on positioning devices capable of moving on the annular conveying lines; the positioning devices circularly move on the annular conveying lines until the positioning device on the foremost side reaches a grabbing position; positioning mechanisms on the annular conveying lines are acted to lock and fix the positioning devices to accurately position in the grabbing position; a manipulator of the main production line can automatically grab the assembly parts positioned on the positioning devices in the grabbing position; and the assembly parts are shifted and positioned on assembled parts on the main production line; and an automatic assembly mechanism on the main production line is acted to automatically assemble the assembly parts on the assembled parts to finish automatic assembly. The vehicle assembly method can greatly reduce assembly workers of the production line, improves the working efficiency of the assembly workers, eliminates personal injury accidents of the assembly workers, and meanwhile, facilitates realization of mixed line assembly of multiple vehicle types.

The invention discloses a self-locking crossing mechanism used for folding table and chair frames and a folding bed frame. The self-locking crossing mechanism comprises a scissor type mechanism, two second connecting rods and two third connecting rods, wherein the scissor type mechanism comprises two first connecting rods; a first end of each second connecting rod is rotatably connected to one corresponding first connecting rod, each third connecting rod is rotatably connected to the corresponding second connecting rod, the third connecting rod is further rotatably connected with the other first connecting rod, and the scissor type mechanism, the two second connecting rods and the two third connecting rods are matched to form two groups of hinge four bar mechanisms symmetrically distributed. The self-locking crossing mechanism is provided with a limiting mechanism used for limiting the maximal unfolding angle, and the degree of the inclined angle having the opening facing downwards andformed by the two third connecting rods of the self-locking crossing mechanism at the maximal unfolding angle is greater than 180 degrees. The self-locking crossing mechanism has the advantage that the self-locking state of the mechanism can be maintained, so that the width and the height are fixed, thus a flexible cloth material achieves the tensioned state, the folding table and chair frames and the folding bed frame are stable, and can not topple over, the use is comfortable, the stress in the width direction is good, in addition, the structure is firm, and the manufacturing process is simple.

The invention discloses a roller pin lubricating-type casing pipe truss having a self-locking anti-falling structure. The roller pin lubricating-type casing pipe truss comprises a plurality of casingpipes, a lower truss and an upper truss; the upper ends of the casing pipes are connected with the upper truss; the lower ends of the casing pipes are connected with the lower truss; the upper truss and the lower truss are connected together through the casing pipes; each casing pipe comprises an outer pipe and an inner pipe; the inner pipe and the outer pipe are correspondingly provided with parts: step teeth, a right-angle transition board assembly, a lifting bar and the like; the parts can be used for realizing locking and slip prevention of the inner pipe and the outer pipe at a certain position; and roller pins are also arranged between the inner pipe and the outer pipe so as to guarantee that the inner pipe and the outer pipe move smoothly when sliding relatively. The roller pin lubricating-type casing pipe truss disclosed by the invention is of a mechanical structure, and has a reliable self-locking function; the casing pipes can be stretched to different lengths within a use range and are locked, i.e., the upper truss can remain at several heights within the use range, so that applicability of the truss is greatly enhanced; when the truss is retracted, only the upper trussneeds to be pulled to a highest position; then, pulling the upper truss for one height distance is continued; and then, the truss can be downwards retracted to a lowest position; operation is simple;and the multiple casing pipes are arranged between the upper truss and the lower truss, so that the structure is firm and reliable.

The invention discloses an eccentric self-locking type work fixture for drilling. The eccentric self-locking type work fixture for drilling comprises a base, a drilling plate, a first U-shaped press plate, a second U-shaped press plate, a first eccentric wheel and a second eccentric wheel, wherein the upper side of the base is provided with a positioning slot for positioning the drilling plate and a workpiece; a first support rod and a second support rod are fixed to the upper side of the base; the top end of the first support rod is in rotating connection with the first eccentric wheel; the top end of the second support rod is in rotating connection with the second eccentric wheel; a first driving handle is fixedly mounted on the first eccentric wheel; a second driving handle is fixedly mounted on the second eccentric wheel; the base is provided with multiple T-type slot screws fixedly connected with a machine tool workbench. The eccentric self-locking type work fixture for drilling has the following characteristics of being convenient to operate, high in clamping speed, high in efficiency, reasonable in design, simple and compact in structure, large in clamping force, reliable in self-locking property, wide in application range and high in universality.

The invention discloses a detachable angle-adjustable self-locking folder. The folder comprises a front joint, a rear joint, a handle and a screw rod, wherein one sides of the front joint and the rearjoint are hinged, one end of the handle is connected with the rear joint, and a jacking rotating pin is arranged on the inner side surface of the free end of the handle; one end of the screw rod is in threaded connection with the jacking rotating pin and can rotate around a shaft core of the jacking rotating pin, and the other end of the screw rod is a hemisphere head; and a sphere head groove isformed in the free side of the front joint, and the hemisphere head of the screw rod is embedded into the sphere head groove of the front joint by rotating the handle so as to fold and lock the frontjoint and the rear joint. According to the detachable angle-adjustable self-locking folder, the front joint and the rear joint can be completely detached, and the secondary self-locking can be implemented. The detachable angle-adjustable self-locking folder is simple in structure, convenient to use and reasonable in stress, the self-locking is relatively reliable, and the service life is prolonged.

The invention provides a cap type ratchet self-locking device and a steel support comprising the same. The cap type ratchet self-locking device comprises an inner pin, a cap and a plurality of wedge block assemblies, wherein a plurality of ratchets are arranged on the outer peripheral surface of the inner pin, a mounting hole is formed in one end of the cap, the inner pin can be inserted into themounting hole, the plurality of wedge block assemblies are arranged on the inner peripheral surface of the mounting hole, the wedge block assemblies comprise wedge blocks, elastic pieces and inhaul cables, the wedge blocks can rotate relative to the cap and can be switched between the two states of extension and retraction, one ends of the inhaul cables are fixed to the wedge blocks, the other ends of the inhaul cables extend out to the outside of the cap, and the inhaul cables can pull the wedge blocks to be in the retraction state. According to the cap type ratchet self-locking device and the steel support comprising the same, due to the fact that the wedge blocks cooperate with the ratchets, the cap cannot be retracted towards the direction of the inner pin, reliable self-locking can beachieved after installation is completed, only the inhaul cables need to be pulled during mounting or dismounting for achieving mounting ordismounting can be achieved, so that mounting and dismounting are both very convenient.

The invention discloses a Ku / Ka dual-frequency shared portable communication antenna, and belongs to the technical field of antennas. The antenna seat frame is a U-shaped frame and comprises a bottom plate and supporting arms located on the two sides of the upper surface of the bottom plate. An azimuth gear is fixed to the top of the supporting center. An azimuth motor is located on one side of the azimuth gear, and an azimuth output gear at the end of an output shaft of the azimuth motor is meshed with the azimuth gear. A shell of the azimuth motor is fixedly connected with a bottom plate of the antenna pedestal frame; the outer side of one support arm of the antenna pedestal is provided with a pitching belt wheel in bearing connection with the support arm, and the shaft part of the pitching belt wheel located on the inner side of the support arm is fixedly connected with the box body; the other support arm of the antenna seat frame is connected with a bearing on the corresponding wall surface of the box body; a pitching motor is further fixedly arranged at the bottom of the antenna seat frame, and an output shaft of the pitching motor drives a pitching belt wheel to rotate through a belt. According to the invention, rapid feed switching is realized, winding of wire groups is avoided, the structure is simple and light, and the reliability is high.

The invention relates to a power supply switcher, which comprises a drive mechanism, a switch block, and a connecting pole plate, wherein the connecting pole plate is matched with the switch block and electrically connected with a load of an external device; the drive mechanism comprises a drive device and a drive draw bar; the drive device is assembled on a support seat; two ends of the drive draw bar are respectively connected with the drive device and the switch block; the switch block is connected with the connecting pole plate in fit; the connecting pole plate comprises two connection ends, and a first connecting pole plate and a second connecting pole plate, which are mutually insulated; a fracture structure is arranged on the second connecting pole plate, and matched with the switch block to control on / off; different connection ends are selected, and the connection ends at the same sides of the first connecting pole plate and the second connecting pole plate are electrically connected with different frequencies of loads of the external device respectively. The power supply switcher is simple in structure, reasonable in layout, small in volume, low in cost, high in power supply switching efficiency, and good in effect; stable and reliable switching of the power supply can be achieved, and the device also can be effectively prevented from being damaged.

The invention discloses an inspection robot for a power transmission line. The inspection robot comprises a robot body, a control device and a detecting device, wherein a signal output end of the detecting device is connected with an input end of the control device; an output end of the control device is connected with a controlled end of each controlled part of the robot body; the robot body comprises a fixed bracket; three sets of motion detecting units are arranged on the fixed bracket in parallel; each set of motion detecting units separately comprises an obstacle-crossing mechanical arm, an up-and-down motion mechanism for driving the obstacle-crossing mechanical arm to move up and down and a rotary mechanism for driving the up-and-down motion mechanism and the obstacle-crossing mechanical arm to horizontally rotate; the rotary mechanism is fixedly arranged on the fixed bracket; the up-and-down motion mechanism is arranged on the rotary mechanism; and the obstacle-crossing mechanical arm is fixedly arranged at the top end of the up-and-down motion mechanism. The inspection robot not only can realize daily inspection of the power transmission line, further can realize obstacle-crossing inspection, improves inspection precision and accuracy of the power transmission line, and provides guarantee for safety operation of the power transmission line.

The invention discloses a self-locking type double-station thread drilling tool fixture. The self-locking type double-station thread drilling tool fixture comprises a base, a first drilling mold plate, a second drilling mold plate, a U-shaped pressing plate, a threaded rod and a nut. A first positioning groove is formed in one side of the base and internally provided with the first drilling mold plate. A second positioning groove is formed in the other side of the base and internally provided with the second drilling mold plate. The lower end of the threaded rod is fixedly installed on the base. The U-shaped pressing plate with an unthreaded hole in the middle is arranged on the upper side of the base. The upper end of the threaded rod penetrates through the unthreaded hole, and then the nut is installed at the upper end of the threaded rod. A gasket is arranged between the nut and the U-shaped pressing plate. The self-locking type double-station thread drilling tool fixture has the following characteristics of being convenient to operate, provided with double stations, high in production efficiency, good in drilling position precision, reasonable in design, simple and compact in structure, convenient to disassemble, assemble and maintain, large in pressing force, reliable in self locking, high in universality and wide in application scope.