86results about How to "Realize locking and fixing" patented technology

The invention relates to the technical field of pipeline machining, and discloses pipeline welding equipment and a welding method.The pipeline welding equipment comprises a rotary welding mechanism and two pipe fitting clamping mechanisms, the two pipe fitting clamping mechanisms are located on the two sides of the rotary welding mechanism correspondingly, and the rotary welding mechanism comprises two sets of supporting columns; an arc-shaped sliding block is fixed to the top of each of the opposite sides of the two supporting columns, a rotating ring is connected between the two supporting columns in a sliding mode, annular sliding grooves matched with the arc-shaped sliding blocks are formed in the outer surface of the circumference of the rotating ring, and an outer gear ring groove is formed in the middle of the inner wall of each annular sliding groove. The pipeline welding equipment has the beneficial effects that the rotary welding mechanism and the pipe fitting clamping mechanism are used in cooperation, so that the pipeline welding equipment can be matched with pipelines of different sizes, the practicability of the welding equipment is improved, the application range of the welding equipment is widened, and clamping, fixing and welding connection of the pipes of different sizes and specifications are achieved.

The invention relates to the technical field of copper bar machining, and discloses cutting and chamfering equipment based on alloy copper bar machining, which comprises a machine tool, a clamping chuck and a driving assembly arranged on the machine tool, an adjusting mechanism arranged on the machine tool, and a cutting and chamfering mechanism arranged on the adjusting mechanism, the clamping chuck is used for clamping and positioning a to-be-machined copper rod, and the driving assembly drives the clamping chuck to drive the copper rod to rotate. The adjusting mechanism comprises a first adjusting assembly and a second adjusting assembly. According to the cutting and chamfering equipment based on alloy copper bar machining, through mutual cooperation of the clamping chuck, the driving assembly, the adjusting mechanism and the cutting and chamfering mechanism, synchronous operation of cutting and chamfering of the copper bar can be achieved, on one hand, errors possibly caused by two times of clamping can be effectively reduced, and the consistency and precision of products are improved; and on the other hand, the processing period can be greatly shortened, and the process conversion and waiting time is reduced, so that the production efficiency is remarkably improved.

The invention relates to the technical field of rail transit construction, in particular to prefabricated assembly type base plate intelligent turnover equipment and a using method thereof.The prefabricated assembly type base plate intelligent turnover equipment comprises a base, a turnover supporting frame and a base plate, the turnover supporting frame is formed by arranging a plurality of L-shaped supporting frames side by side, and a first turnover connecting base is arranged on the rear side of the bottom of the long edge of each L-shaped supporting frame; the first overturning connecting seat is connected with the base through a rotating shaft, the front side of the bottom of the long edge of the L-shaped supporting frame is connected with one end of the push rod, one or more base plate supporting seats are arranged in the middle of the top of the long edge of the L-shaped supporting frame, and self-adaptive base plate supporting seats are arranged on the front side and the rear side of each base plate supporting seat respectively. The self-adaptive base plate supporting seat comprises a bottom plate, a top plate, a steel spring and a spring shaft, and the top plate is connected with the bottom plate through the spring shaft and the steel spring. The device has the advantages that the structure is stable, the strength and durability of the structure are enhanced, the operation safety is ensured, and the self-adaptive adjusting function is added.

The utility model belongs to the technical field of temperature controllers, and discloses an analog quantity automatic timing temperature controller, which comprises a main shell and an outer shell, the outer shell is buckled on the main shell, a panel is connected on the outer shell in a sliding manner, two symmetrical limiting strips are arranged on the outer shell, and the limiting strips are connected with the panel in a sliding manner. Two strip-shaped grooves matched with the limiting strips are formed in the main shell, and through mutual cooperation of the limiting strips, the strip-shaped grooves, the sliding blocks, reset springs and other structures, after the main shell is fixed to a wall, the two adjusting blocks are pinched to enable the two sliding blocks to be close to each other, and then the main shell is fixed to the wall. At the moment, the two sliding blocks extrude the two reset springs, then the two limiting strips on the outer shell slide in or are inserted into the main shell along strip-shaped grooves in the main shell, then the two adjusting blocks are loosened, and therefore the two sliding blocks can be far away from each other through the elastic potential energy of the two reset springs and are inserted into locking holes in the two limiting strips; therefore, the main shell and the outer shell are locked and fixed.

The utility model discloses an anti-static PET protective film production die cutting device which comprises a device body, a die cutting mechanism is installed on the device body, a connecting base is installed on the die cutting mechanism, a die cutter is detachably connected to the bottom of the connecting base, a feeding frame and a receiving frame are installed on the device body, and the feeding frame and the receiving frame are symmetrical to each other. When the die-cutting rule is installed, the T-shaped block on the die-cutting rule can be in butt joint with the interior of the T-shaped groove in the connecting base, after butt joint of the die-cutting rule and the connecting base is finished, the clamping end of the sliding clamping block can be clamped into the clamping groove in the die-cutting rule through a thread screwing-in relation by rotating the lead screw on the connecting base, and then the die-cutting rule is installed. According to the die cutting device, the connecting base and the die cutting knife are locked and fixed, through mutual cooperation of the screw rod, the mounting plate, the pressing roller and other structures, the mounting plate can vertically descend by rotating the screw rod and through the thread screwing-in relation, the protective film is pressed, and therefore the die cutting stability is improved.

The utility model relates to the field of flue pipe discloses a one -way flue pipe, including flue pipe main part, the top of flue pipe main part is provided with the extension tube, and the both ends between flue pipe main part and extension tube are fixedly connected with the connecting fixed plate, and the outside of connecting fixed plate is fixedly connected with a plurality of lugs, and the inside of lug is penetrated with the bolt bolt, and the top of bolt bolt is provided with the bolt hole, and the inside of bolt hole is penetrated with the bolt rod, and the middle part of flue pipe main part is fixedly connected with the sleeve pipe, and the inside of sleeve pipe is turned over with the one -way valve plate. The utility model discloses through the outside setting of the support rod of extension tube connection and then connecting fixed plate, through the one end of support rod and upper support sleeve or lower support sleeve fixed respectively, thereby can be with lower support sleeve respectively to the fixed of extension tube and flue pipe main part of upper support sleeve, completes the support effect, can prevent the connection of flue pipe main part and extension tube and cause the problem of inclination fracture, increases the support effect.

The utility model discloses an elevator car door lock, and particularly relates to the technical field of elevator car door locks, which comprises a lock catch component mounted on an elevator component and used for locking and fixing. The lock catch assembly comprises an installation column and a fixing column which are arranged below the elevator assembly, an electromagnetic column is installed on the side, close to the fixing column, of the installation column, the outer portion of the end, close to the fixing column, of the electromagnetic column is sleeved with an iron cylinder, and the iron cylinder is installed on the side, close to the electromagnetic column, of the fixing column. The two elevator doors can be locked and fixed through nesting connection of the electrified electromagnetic column and the iron cylinder, the situation that the two elevator doors are loosened and opened is avoided, when the electromagnetic column is powered off and separated from the iron cylinder, the smoothness when the two elevator doors are separated can be guaranteed, the stability of the locking mode is high, and the safety is high. And meanwhile, the protective cylinder is pushed to move outwards by means of tension of the spring, so that the protective cylinder can move to the outside of the electromagnetic column separated from the iron cylinder, and the protective cylinder can shield and protect the outside of the electromagnetic column to be used.

The utility model discloses a two-way pneumatic valve with a ring groove valve core, which relates to the technical field of two-way pneumatic valves and comprises a valve seat, fixing pipes are arranged at two ends of the valve seat, a servo motor is mounted on the left side of the valve seat, and an output end of the servo motor extends into the valve seat and is provided with a valve rod. A connecting plate is installed on the right side of the valve rod, a valve element is installed on the right side of the connecting plate, a first flange is installed on the right side of the fixing pipe, and a sealing mechanism for reducing fluid leakage is arranged on the right side of the first flange. According to the two-way pneumatic valve with the annular groove valve element, the sealing strip is placed on one side between the first flange and the second flange, and then the sealing strip is extruded by a bolt when the first flange and the second flange are connected, so that a gap between the first flange and the second flange is filled; and therefore, the gap between the first flange and the second flange is reduced, and the situation of fluid leakage is avoided.

The invention belongs to the technical field of transformer substations, and discloses an isolating switch locking device and an isolating switch protection method. The disconnecting switch locking device comprises a fixed clamp body, a movable clamp body, a protective cover and a controller, wherein the fixed clamp body comprises a sliding part and a fixed part; the movable clamp body is slidably connected to the sliding part; a movable chuck and a clamping handle are arranged on the movable clamp body, and the cam part can extrude the movable chuck by operating the clamping handle; the movable clamp body is provided with a ratchet wheel, the clamping handle is provided with a pawl, and the pawl can be disengaged from the ratchet wheel by pressing the release switch; the protective cover is rotationally connected to the clamping handle and can cover the release switch; a locking pin is arranged on the protective cover in a penetrating manner and is provided with an electronic lock; the controller is in communication connection with the electronic lock. The disconnecting switch locking device can lock the disconnecting switch under the condition that existing equipment is not affected, the application range is wider, disconnecting switch opening caused by misoperation can be avoided, and the safety during substation maintenance is improved.

The present invention relates to the field of internal high-pressure forging technology, and discloses an internal high-pressure forging device for lightweight structural parts, including a frame, a hydraulic press, a mobile frame, an upper die, a lower die, a workbench and two tracks. The workbench is arranged above the two tracks. The workbench is a hollow structure. A lifting frame is arranged inside the workbench. A driving mechanism is installed on the lifting frame. The driving mechanism contacts the two tracks to drive the workbench to move on the tracks. A plurality of rectangular openings are provided at the bottom of the workbench. A fixing mechanism is installed in each of the plurality of rectangular openings. The fixing mechanism is connected to one side of the lifting frame through two pull rods. The fixing mechanism fixes the workbench by clamping the track. An opening is provided at the upper end of the workbench. The internal high-pressure forging device for lightweight structural parts can facilitate loading and unloading of materials and replacement of dies by moving the workbench, and can also accurately reset after moving, so as to facilitate operation by technicians.

The utility model discloses offshore photovoltaic operation and maintenance platform automatic charging device and offshore photovoltaic power station belong to photovoltaic power generation field. This offshore photovoltaic operation and maintenance platform automatic charging device combines the synergistic effect of optical guidance, mechanical adjustment and locking fixation, realizes the accurate butt joint and locking fixation of operation and maintenance platform and charging stake body, not only makes operation and maintenance platform more stable relative to charging device, and due to the staff can carry out three -dimensional construction operation to charging device under this charging mode, greatly reduces the difficulty of on -the -spot monitoring and temporary processing problem, improves operation safety and efficiency, through fixed assembly to the hull fixed, guarantee the stability of the hull when operating, can effectively cope with offshore high humidity high salt, complex environment of stormy sea, thereby guarantee the safe reliability of operation, through mobile assembly improves the accuracy when charging butt joint and the self -adaptability of automatic charging device to offshore operation and maintenance platform, and the practicality is strong.

The invention relates to the technical field of rehabilitation training equipment, and discloses a hand rehabilitation training system and method.The hand rehabilitation training system comprises a palm supporting plate and a finger supporting assembly, mounting grooves are formed in the two sides of the palm supporting plate, a connecting plate is inserted into one mounting groove, and locking mechanisms are mounted in the connecting plate and the palm supporting plate; a finger supporting assembly palm part is rotationally installed on the palm part supporting plate, a movable seat is assembled on the connecting plate in a sliding mode, an electric telescopic rod is rotationally installed on the movable seat, a transmission assembly is connected to the tail end of the electric telescopic rod, and the transmission assembly is connected with the finger supporting assembly. The mounting grooves are formed in the two sides of the palm supporting plate, the palm supporting plate is matched with the connecting plate to be selectively inserted into the mounting groove in any side so that the palm supporting plate can adapt to the left and right hand rehabilitation training function, the movable seat capable of being adjusted in a sliding mode is arranged, the distance between the finger supporting assemblies is adjusted, and the palm supporting plate is adaptive to different patients; the locking mechanism synchronously achieves locking and fixing of the connecting plate and the movable base and locking and fixing of the connecting plate and the palm supporting plate.

The invention relates to a reducing tee pipe fitting connecting piece, which relates to the technical field of pipeline connection, and comprises a pipe fitting main body, a connecting pipe and a connecting assembly, one end of the pipe fitting body communicates with the end of the connecting pipe, and the pipe fitting body is connected with the connecting pipe through a connecting assembly. The connecting assembly comprises a first connecting sleeve, an elastic piece and a plurality of first abutting pieces, the pipe fitting body is sleeved with the first connecting sleeve, the first abutting pieces are distributed in the circumferential direction of the pipe fitting body at intervals, the first abutting pieces are slidably connected to the first connecting sleeve in the radial direction of the pipe fitting body, and the first abutting pieces abut against the inner wall of the connecting pipe; the end of the pipe fitting body is sleeved with a first sealing ring, and one side of the first sealing ring is attached to the outer wall of the connecting pipe. The reducing tee pipe fitting has the effect that the reducing tee pipe fitting can be conveniently connected and installed with connecting pipelines with different diameters.

The utility model discloses a cable fixing device for communication engineering, which comprises a lower fixing seat, an upper fixing seat, an adjusting mechanism and a cable pressing mechanism, the lower fixing seat is detachably connected with the upper fixing seat through a bolt, and inner cavities of the lower fixing seat and the upper fixing seat are correspondingly provided with movable cavities matched with the adjusting mechanism to move. The wire pressing mechanism is in threaded connection with the upper fixing base, the adjusting mechanism comprises two sets of sliding plates symmetrically arranged in the movable cavity, the two sets of sliding plates are slidably connected to the inner wall of the movable cavity, the wire pressing mechanism comprises a telescopic plate, the two ends of the telescopic plate slide on the outer walls of the sliding plates, and the top of the telescopic plate is rotationally connected with a pressing rod; and the pressing rod is in threaded connection with the upper fixing base, the top of the pressing rod is in threaded connection with a limiting column, the limiting column, the pressing rod and the telescopic plate are arranged to fix the cable, the adjusting mechanism is arranged to enable the whole device to be suitable for cables of different sizes, and the practicability of the whole device is improved.

The utility model discloses a self-locking plate buckle type scaffold fixing device which comprises a plate buckle type scaffold fixing mechanism used for fixing a scaffold, and the plate buckle type scaffold fixing mechanism comprises a steel pipe stand column, an installation plate fixedly connected to the steel pipe stand column and an adjustable steel pipe cross rod mechanism. The steel pipe transverse rod mechanism comprises a transverse pipe body, and the side face of the transverse pipe body is fixedly connected with a rotating installation base. The operation block is pulled through the operation handle so as to drive the sliding clamping rod to be separated from the corresponding clamping groove, the rotary installation base rotates to a proper angle according to needs, the operation handle is loosened, the sliding clamping rod can be driven to be clamped into the corresponding clamping groove under the elastic force action of the connecting spring, and locking and fixing after the transverse pipe body is adjusted are achieved. And the scaffold can be conveniently installed and fixed, and different construction requirements can be met.

The utility model discloses a high-precision three-axis acceleration sensing device which comprises an installation carrier and three single-axis paper-based acceleration sensors, an installation assembly is arranged in the installation carrier, and the installation assembly comprises an inner fixing frame, three fixing plates, a threaded sleeve, a locking screw, a locking plate, two guide columns and an installation through hole; the three fixing plates are fixedly connected to the interior of the inner fixing frame. According to the utility model, the inner fixing frame, the fixing plate and other structures are arranged in the installation carrier, so that the integral rigidity of the sensor is enhanced, and during installation, the locking plate and the fixing plate are matched, so that the locking and fixing of the single-shaft paper-based acceleration sensor can be realized, the position stability of the single-shaft paper-based acceleration sensor is ensured, and the reliability of the sensor is improved. The situation of measurement data deviation is avoided, and the precision of the sensor is improved.

The present invention discloses a tubular penetration sealing device, including a guide, a compression member, an extrusion sealing member, and a sealing base; the guide member can be directly welded or installed on the sealing base through a locking assembly according to construction requirements; the compression member is connected to the end of the guide member, and is provided with a compression cavity communicated with the guide member, and the tubular object passes through the compression cavity; the locking assembly is used to internally compress the guide member; the penetration sealing device of the present invention has few components and strong assembly flexibility; the guide member can be installed on the sealing base by welding or by means of a locking assembly according to different construction environments, and welding installation can be adopted for environments that do not require frequent maintenance or adjustment after assembly, while installation through a locking assembly can provide greater assembly flexibility. The locking assembly can be easily disassembled and replaced as needed, and is suitable for situations that require frequent maintenance or adjustment.

The utility model discloses a temperature adjusting device for pesticide granule processing, which comprises an adjusting box and a heater connected to the adjusting box, an air inlet is arranged at the end part of the adjusting box, the air inlet is connected with a baffle plate for shielding the air inlet, the baffle plate is connected with a driving mechanism for driving the two baffle plates to be close to each other or far away from each other, and the heater is connected with the adjusting box. The driving mechanism comprises a first air cylinder, a lifting rod, a lifting block and two connecting plates, the first air cylinder is used for driving the lifting rod to ascend and descend, the lifting block is used for guiding the lifting rod, the two ends of the connecting plates are connected with the lifting block and the corresponding baffles, and the adjusting box is connected with a positioning mechanism used for positioning the lifting rod. The two baffles can move synchronously and conveniently, the air inlet can be blocked in different sizes, and therefore the air inlet amount is adjusted, the temperature in the drying cylinder can be adjusted conveniently to be within a proper temperature range, and the material processing efficiency is improved.

The utility model relates to the technical field of integrated boards, in particular to a bamboo-wood fiber integrated board self-locking type installation assembly which comprises integrated board bodies which are connected in an inserted mode, upper positioning plates are arranged on two side walls of each integrated board body, and lower positioning plates are arranged on the other two side walls of each integrated board body. A first positioning hole is formed in the upper positioning plate, a second positioning hole is formed in the lower positioning plate, and a self-locking positioning mechanism is connected in the first positioning hole and the second positioning hole, so that the integrated board body is locked and fixed. Two same bamboo and wood fiber integrated boards are connected and positioned in an inserted mode, the self-locking positioning mechanisms are installed in the first positioning holes and the second positioning holes in an inserted mode, two integrated board bodies are locked and fixed, the integrated board bodies can obtain excellent stability during assembly type installation, operation is simple, and the assembly type installation efficiency is improved. And a large number of fixed parts are not needed, so that the time and manpower for mounting are saved, and the working efficiency is improved.

The utility model discloses a lock ring type quick-opening blind plate which comprises a ring body and a pressing mechanism. Fixing plates are arranged on the rear side of the outer arc surface of the ring body, connecting rods are rotationally connected to the right sides of the opposite inner side surfaces of the two fixing plates through bearings, rotating arms are arranged in the middles of the outer arc surfaces of the connecting rods, blind plate end covers are arranged at the front ends of the rotating arms, mounting grooves are formed in the blind plate end covers, and avoiding grooves are formed in the left sides of the inner arc surfaces of the mounting grooves; and the pressing mechanism comprises six-edge sliding columns, connecting plates, trapezoidal blocks and inserting grooves, the six-edge sliding columns are arranged on the left sides of the inner arc faces of the mounting grooves correspondingly, limiting plates are arranged at the ends, close to the center of the interior of the ring body, of the six-edge sliding columns correspondingly, and the connecting plates are slidably connected to the middles of the outer arc faces of the six-edge sliding columns correspondingly. The gap between the blind plate end cover and the ring body is reduced, limiting and fixing of the blind plate end cover are achieved, operation is easy, and meanwhile the sealing effect of the lock ring type quick-opening blind plate is improved.

The utility model relates to the technical field of steel beams, and discloses an assembly type climbing frame override steel beam which comprises a first steel beam, a connecting plate is installed in the middle of the left side face of the first steel beam, a limiting plate is installed on the left side face of the connecting plate, and a second steel beam is connected to the outer surface of the limiting plate in a sleeved mode. A clamping plate is installed in the middle of the front face of the second steel beam, a clamping mechanism is arranged in the middle of the front face of the first steel beam, and a first vertical plate is installed on the left side of the upper surface of the first steel beam. According to the assembly type climbing frame overpass steel beam, the first steel beam body and the second steel beam body are arranged to be adjustable mechanisms, the overall length of the device is adjusted, a user can adjust the overall length of the device according to use requirements, the overall flexibility of the device is improved, and use of the user is facilitated; locking and fixing between the first steel beam and the second steel beam are achieved, and the stability of the second steel beam after adjustment is guaranteed.

The utility model belongs to the technical field of fishing umbrella adjusters, particularly relates to a fishing umbrella adjuster without gear adjustment, and provides the following scheme aiming at the problems that an existing fishing umbrella adjuster is limited by gears during adjustment, the structure is complex, an adjusting handle is easy to protrude, and the occupied space is large. The device comprises a first rotating part and a second rotating part, a mounting pipe is fixedly mounted on one side of the first rotating part, the mounting pipe is used for mounting an upper umbrella rod of the fishing umbrella, a mounting hole is formed in the second rotating part, and the mounting hole is used for mounting a lower umbrella rod of the fishing umbrella. According to the fishing umbrella regulator, the friction force between the first rotating part and the second rotating part is increased through the cooperation of the protruding part and the multiple arc-shaped claws, so that fine regulation between the first rotating part and the second rotating part is conveniently carried out, meanwhile, the first rotating part and the second rotating part can be conveniently locked and fixed through the regulating spanner, and the fishing umbrella regulator is convenient to use. The use effect is good.

The utility model relates to an anti-drop fixing device for a high formwork, which comprises a first positive and negative stud, a second positive and negative stud, a base plate, a first fastening mechanism and a second fastening mechanism, the first positive and negative stud and the second positive and negative stud have the same structure and are symmetrically arranged, a first screw hole is formed in the center of the base plate, and a second screw hole is formed in the center of the base plate. The peripheries of the middles of the first positive and negative stud and the second positive and negative stud are sleeved with the first screw holes respectively, the first fastening mechanism and the second fastening mechanism are the same in structure and are symmetrically arranged, one end of the first fastening mechanism is in threaded connection with the periphery of the first positive and negative stud, and the other end of the first fastening mechanism is in threaded connection with the periphery of the second positive and negative stud; the locking device is simple in structure, convenient to install, suitable for locking the connecting position of the cross rod and the vertical rod of the wheel buckle type scaffold, suitable for vertical rods with different diameters, high in practicability and capable of guaranteeing the personal safety of workers.

The utility model discloses a height-adjustable molten iron tank cover device which comprises a supporting top frame and a tank cover support vertically connected with one end of the supporting top frame, an adjusting chain for adjusting the height of a tank cover is arranged on the supporting top frame in a penetrating and sliding mode, and a strip-shaped groove is formed in the upper end face of the supporting top frame in a penetrating mode. Through the combined use of the supporting top frame, the tank cover support, the tank cover, the adjusting chain condition, the tank cover arm buckling grooves and the buckling pipes, before use, the tank cover can be installed and adjusted to different positions of the tank cover arm buckling grooves through the adjusting chain condition; the tank cover is clamped in the tank cover arm buckle grooves to be fixed after being adjusted to different height positions through the arrangement of the buckle pipes on the outer side of the tank cover, and in the tank cover adjusting process, the closing degree of the tank cover and the height of the hot-metal tank cover plate can be adjusted by increasing or decreasing the number of the chain links in the adjusting chain conditions; therefore, the use requirements on tank bodies with different heights are met.

The utility model provides a locking device, an end effector and an ophthalmologic operation robot, and the locking device comprises a bottom plate which is provided with a buckle part; the base is rotatably arranged on the bottom plate; and when the base rotates to a first preset position, the buckling part is buckled and fixed with the base. The base can be buckled and fixed through the buckling part, and accidents or personal injuries caused by falling of the base are prevented. The buckling part is easy and convenient to operate, simple in structure, small in size and smaller in occupied space.

The utility model relates to cultivation frame sunshade technical field, and disclose a kind of sunshade device for ganoderma lucidum cultivation frame, including cultivation framework, roll and sunshade cloth, and auxiliary mechanism and dismounting mechanism are arranged on the cultivation framework. By pulling pull ring, make pull rod through slider drive fixed rod separate from the fixed hole on roll, i. e. it can remove the fixation of roll, convenient to take down roll and replace sunshade cloth, pull ring is pulled again when installing, and fixed rod is retracted to cylinder, at this time, slider is extruded to second spring, then the roll shaft of roll is placed in connecting sleeve, and the fixed hole on roll shaft is aligned with fixed rod, then pull ring is loosened, and fixed rod is automatically clamped into fixed hole under the rebound action of second spring, realize the locking and fixing of roll, realize the quick installation after the replacement of sunshade cloth, effectively improve the flexibility of sunshade device, reduce maintenance cost, prolong the service life of ganoderma lucidum cultivation frame.

The cable bridge comprises a bridge body, a front seat and a rear seat, the front seat and the rear seat are connected to the two ends of the bridge body, the top of the bridge body is connected with a plurality of top covers, the front seat and the rear seat are connected with two positioning mechanisms used for cable positioning, the front seat is connected with a first driving mechanism used for driving the positioning mechanisms to ascend and descend, and the rear seat is connected with a second driving mechanism used for driving the positioning mechanisms to ascend and descend. The rear seat is connected with a second driving mechanism used for driving the other positioning mechanism to ascend and descend, the second driving mechanism comprises a push plate, a stud, a sliding block and a connecting rod, the two ends of the connecting rod are connected with the sliding block and the corresponding positioning mechanism, the push plate is used for pressing a plurality of top covers, and the top covers are connected with the first driving mechanism. According to the invention, the connection stability of the plurality of top covers can be improved, the top covers are tightly pressed on the frame body, the connection tightness of the top covers and the frame body is improved, invasion of dust and impurities is reduced, the purpose of rapid assembly is achieved, the corresponding top covers can be opened by operating the handles, cables at corresponding positions are convenient to overhaul, and the operation is flexible and convenient.

The invention discloses a temporary height limiting rod convenient to deploy quickly, and relates to the technical field of height limiting rods, the temporary height limiting rod comprises an outer cylinder, and a movable connecting piece is fixed to the bottom of the outer cylinder; the bottom of the movable connecting piece is movably connected with a mounting base through a rotating shaft; the outer side of the upper end of the movable connecting piece is connected with an oil cylinder; a height adjusting assembly is movably connected to the interior of the outer cylinder, a supporting arm locking assembly is fixed to the top of the height adjusting assembly, and a height limiting cross arm is movably connected to one side of the supporting arm locking assembly. According to the invention, the height limiting cross arm is unfolded towards the outer side, so that the height limiting cross arm and the outer cylinder are arranged at an angle of 90 degrees; when the height limiting cross arm is unfolded, the pulling plate fixed to the height limiting cross arm ejects the protruding part on the second locking piece towards the outer side till the protruding part is clamped into the through groove, then the locking bolt and the locking screw hole are locked and fixed, and therefore locking and fixing of the second locking piece and the pulling plate are achieved. Meanwhile, unfolding of the height limiting cross arm is completed; operation is convenient, and rapid deployment of the height limiting frame can be achieved.

The utility model discloses a network switch, which comprises a switch body, the rear end of the switch body is provided with a plugging port, the rear of the switch body is provided with a fixing frame, two groups of mounting frames are symmetrically arranged on the fixing frame, a synchronous opposite moving structure is arranged in cooperation with the mounting frames, and the inner sides of the mounting frames are provided with clamping seats in cooperation with the plugging port. The switch body comprises a shell, the shell is provided with a heat dissipation groove, the heat dissipation groove is provided with a protective net plate, the outer side of the shell is provided with a clamping seat, the clamping seat is provided with a wire fixing groove, the outer side of the clamping seat is provided with a plurality of groups of locking sheets, the outer side of the plurality of groups of locking sheets is provided with a locking ring in a threaded manner, and the locking ring is provided with a wire clamping port; the switch body comprises a shell, the shell is provided with a heat dissipation groove, and the heat dissipation groove is provided with a protective net plate; according to the utility model, the stability of the network switch when the network switch is connected with an external cable can be improved, and the ventilation protection performance can be improved at the same time.

This invention discloses a small, multi-functional electric tiller, including a tractor, a rotary tiller, and a lifting bracket mechanism located at the rear of the tractor for raising and lowering the rotary tiller. The lifting bracket mechanism is equipped with a quick-release frame for assembling and disassembling the rotary tiller. The rotary tiller includes a support frame for fastening to the quick-release frame, a rotary blade motor mounted on the support frame, a transmission assembly located in the middle of the support frame and connected to the rotary blade motor for power transmission, and left and right rotary blades mounted on either side of the lower end of the transmission assembly. The quick-release frame between the lifting bracket mechanism and the rotary tiller allows for rapid assembly and disassembly, facilitating the replacement and maintenance of the rotary tiller and enabling quick replacement with agricultural mechanisms of different functions, such as a lawnmower.