29results about How to "Stable length" patented technology

The application discloses a roadway guide rail installation lifting appliance, which comprises a lifting seat and symmetrically arranged lifting assemblies, the lifting seat is fixed with a horseshoe ring through bolts; the lifting assembly comprises an anchoring plate, an anchoring rod and an adjusting pipe, a fixing ring is arranged at the end of the anchoring rod away from the anchoring plate, coaxial adjusting rods are symmetrically connected to the adjusting pipe in a threaded mode, a first screw rod is threadedly connected to the end of the top adjusting rod away from the adjusting pipe and arranged to pass through the fixing ring, a second screw rod is threadedly connected to the end of the bottom adjusting rod away from the adjusting pipe and arranged to pass through the horseshoe ring, and the lifting seat is fixedly connected with the guide rail. The lifting appliance can be flexibly adapted to different roadway working conditions through the threaded cooperation between the adjusting pipe and the adjusting rods, and the equipment procurement and storage costs are greatly reduced.

The utility model relates to the technical field of clinical nursing, in particular to a bandage type oropharyngeal airway applicable to different facial forms, which comprises an airway body, a fixing cylinder fixedly sleeved at the end of the airway body, and a wearing component arranged on the fixing cylinder and used for wearing the airway body on the faces of people with different facial forms. The wearable assembly comprises two fixing holes, the two fixing holes are symmetrically formed in a fixing cylinder, and sliding rods are slidably inserted into the two sides of the fixing cylinder; by pulling the pull block, the pull block can drive the sliding rod and the positioning piece to compress the spring, then the adjusting belt is pulled, the adjusting belt can slide in the fixing hole, the length of the adjusting belt can be adjusted, then the pull block is released, and at the moment, the spring rebounds the positioning piece due to the elasticity of the spring until the positioning piece and the rubber pad abut against the adjusting belt. The adjusting belt can be stably positioned in the fixing hole, stable wearing can be facilitated, and the adjustable facial mask can be suitable for patients with different facial forms to use by adjusting the length of the adjusting belt.

The invention discloses a high-voltage large-current sheet-type jack terminal for an electric drive test and an electric connector, and the jack terminal comprises a butt-joint member, a first terminal, a second terminal, a third terminal, a fourth terminal, a fifth terminal and a sixth terminal, the connecting component is arranged at the other end of the butt joint component and used for assembling; the anti-loose grooves are concavely formed in the outer walls of the two sides of the butt-joint component and located on the upper side and the lower side of the butt-joint opening correspondingly; the anti-loose component is arranged in the anti-loose groove; the number of the inserting grooves is one pair, the inserting grooves are located in the two oppositely-arranged inner walls in the butt joint opening respectively, and an opening is formed in the side, facing the butt joint opening, of each inserting groove; the elastic contact finger is arranged in the inserting groove, and the two sides of the elastic contact finger are pressed by the anti-loosening component; each elastic contact finger comprises a plurality of contact elastic sheets which are obliquely arranged relative to the horizontal direction, and the arrangement directions of the contact elastic sheets of the upper elastic contact finger and the lower elastic contact finger are opposite; the contact spring extends into the butt joint opening through the opening.

The utility model relates to the technical field of hexagon wrenches, and discloses an anti-skidding hexagon wrench handle which comprises a fixing sleeve, a supporting sleeve is movably installed in the fixing sleeve, a connecting mechanism is vertically installed in the middle of the rear inner wall of the fixing sleeve, and the front face of the connecting mechanism is connected with the rear side of the supporting sleeve. Through the connecting block, the movable block and the rear side of the supporting sleeve, the supporting sleeve and the fixed sleeve can be kept in sliding connection, a hexagon wrench can be conveniently connected through the mounting sleeve, one end of the hexagon wrench can be attracted through the magnet block, and the end of the hexagon wrench is kept stable in the mounting sleeve; and the silicon rubber sleeve is installed on the outer side of the fixing sleeve, and the positioning blocks are inserted into the positioning grooves in a penetrating mode, so that the silicon rubber sleeve can be prevented from rotating, friction between the fixing sleeve and the hand can be increased, and the situation that the fixing sleeve slides in the using process is prevented.

The utility model discloses a total station with a stable support device, which comprises support legs and telescopic legs, a base is arranged above the support legs, the base is rotatably connected with the support legs, the periphery of the telescopic legs is provided with the support legs, the inner sides of the support legs are rotatably connected with sleeves, the inner parts of the sleeves are slidably connected with inner rods, and the inner rods are connected with the telescopic legs. And one end of the inner rod is rotationally connected with a lifting block. Compared with an existing total station, the total station with the stable supporting device has the advantages that the rotating lead screw drives the lifting block to ascend and descend, the lifting block pushes the inner rod and the sleeve when ascending and descending, and the inner rod and the sleeve push the supporting leg to rotate around the base, so that the supporting leg is synchronously rotated, and the length of the telescopic leg in the supporting leg is conveniently and quickly leveled and adjusted; when the telescopic legs abut against the ground and are on the solid ground, the supporting feet automatically adapt to the ground through rotation of the spherical joints, the contact area between the supporting feet and the ground is increased, and when the ground is wet, smooth and soft, the connecting blocks are taken down, the baffles are rotationally opened, and the pointed cones are inserted into the ground.

The present invention discloses a diaphragm tension control method for a stacking machine, the method comprising: controlling the movement of the film-drawing roller group to lay the diaphragm provided by the feeding device on the stacking table; during the movement of the film-drawing roller group, determining the first motion control parameter of the stacking table according to the movement characteristic parameter of the film-drawing roller group; controlling the movement of the stacking table according to the first motion control parameter to maintain the diaphragm in the stacking machine in a tensioned state. The present invention also discloses a stacking machine and a computer-readable storage medium. The present invention aims to avoid the loosening of the film during battery stacking, which leads to drastic fluctuations in the diaphragm tension, and can improve stacking efficiency, stacking stability and the performance of the produced battery.

The application discloses a method, device, equipment and medium for determining an anode sheath length of an arc model. The method comprises the following steps: in the first step, a first arc root radius is determined according to a current density output by a first arc generation model; in the second step, a second arc root radius is determined according to the first arc root radius and a second arc generation model, wherein an input parameter of the second arc generation model comprises a first anode sheath length; and in the third step, the anode sheath length is determined according to the first arc root radius and the second arc root radius. By determining the anode sheath length, the application is beneficial to solving the problem of slow solving speed and non-convergence of arc model simulation calculation, thereby being beneficial to establishing a more accurate arc simulation model.

The automatic continuous laminating device comprises a movable lifting mechanism, an unwinding mechanism, a winding mechanism and an electric cabinet, one end of the double-sided adhesive tape is connected with the unwinding mechanism in a winding mode, and the other end of the double-sided adhesive tape sequentially penetrates through an adhesive breaking mechanism, an elastic compression roller mechanism and a supporting roller assembly and is connected to the winding mechanism. The supporting roller assembly and the winding mechanism are connected with the power mechanism. The constant linear speed structure is used for keeping the constant speed of the double-sided adhesive tape; and the torsion self-sliding structure is used for preventing the unwinding mechanism and the winding mechanism from freely rotating. According to the automatic continuous gluing device for the double-faced adhesive tape with the specified length, the gluing length can be freely set, the shutdown time of manual gluing is shortened, automatic intelligent manufacturing of a production line is achieved, and data continuity automation in the whole process from beginning to end of gluing of the double-faced adhesive tape is achieved.

The utility model discloses a pipeline supporting structure for hydraulic engineering, and relates to the technical field of hydraulic engineering pipeline devices, the pipeline supporting structure comprises a bottom plate, two groups of supporting plates are slidably connected in the bottom plate, the inner walls of the supporting plates are connected with a limiting plate I, and the outer surface of the limiting plate I is slidably connected with a fixing plate; inserting rods are slidably connected into the fixing plate, multiple sets of control rods are slidably connected into the bottom plate, through cooperation of the supporting plate, the fixing plate, the inserting rods and the control rods, the length of the two sides of the bottom plate can be increased through the supporting plate, and the fixing plate and the supporting plate can be connected and fixed through the inserting rods; after the position of the supporting plate is adjusted, the control rod can fix the supporting plate and the bottom plate, auxiliary fixing can be conducted on the supporting plate, the stability of the supporting plate during working is guaranteed, the function of flexibly adjusting the length of the bottom plate is achieved, and the bottom plate can better adapt to supporting of pipelines of different terrains and different diameters.

This utility model discloses an independently adjustable length and width roller skate shell, relating to the field of roller skate accessories, aiming to solve the problems of unreliable coupling and locking in traditional shell length and width adjustment. It includes a sole shell and a sliding toe cap, the sliding toe cap being slidably mounted on the sole shell. Independent length and width adjustment mechanisms are provided between the two. The length adjustment mechanism achieves stable locking and convenient operation through a meshing structure of positioning grooves and a pressing locking component, combined with a return spring. The width adjustment mechanism divides the forefoot into a main body and a contraction body, utilizing a cross-shaped sliding groove and contraction groove in conjunction with a width adjustment unit to drive width changes, and includes a crumple groove to provide deformation cushioning. This utility model, through its separate adjustment mechanism, achieves independent, precise, and stable adjustment of the length and width of the roller skate shell, significantly improving the adaptability, safety, and user experience of roller skates.

The invention relates to the field of positioning fixture equipment, and discloses a crankshaft positioning fixture. A fixed plate is welded to the upper surface of one side of a supporting plate, a movable plate is movably connected to the upper surface of the side, away from the fixed plate, of the supporting plate, a clamping main body is welded to the upper surface of the fixed plate, a clamping main body is also welded to the upper surface of the movable plate, and a deformable clamping and fixing block is movably connected to the outer surface of the clamping main body; an adjusting rod is fixedly connected to the outer surface of the deformable clamping and fixing block, a threaded rod is arranged on the inner surface of the end, away from the deformable clamping and fixing block, of the adjusting rod, a fixing block is welded to the outer surface of the deformable clamping and fixing block, the crankshaft is inserted into the deformable clamping and fixing block, and a rotatable threaded ring is arranged at one end of the adjusting rod; the threaded rod stretches out and draws back corresponding to the threaded groove, the length of the crankshaft is fixed, the crankshaft is placed above the main clamping block, then the fixed block is placed above the main clamping block, and by rotating the rocker and the movable rack, the main clamping block gets close to the middle to clamp the fixed block.

The invention discloses a sanitary unit flexible detachable hoisting assembly which comprises an adjustable steel wire rope and further comprises auxiliary locking mechanisms which are installed at the two ends of the adjustable steel wire rope in a penetrating mode so that the ends of the adjustable steel wire rope can form a ring shape. The locking structure is mounted on the auxiliary locking mechanism and is close to one end of the ring formed by the adjustable steel wire rope; the top of the connecting rod is in butt joint with a ring formed by the adjustable steel wire rope through a pull ring; the butt joint block is installed at the bottom of the connecting rod in a butt joint mode and used for being installed at the bottom of the sanitary unit, and the connecting rod penetrates through the hoisting channel of the sanitary unit to be in butt joint and fixed with the butt joint block. According to the sanitary unit hoisting device, a circle of supporting clamping blocks installed outside the center rod body at the bottom of the inclined block are clamped and fixed to the conical clamping blocks, the fastening effect of the positions, penetrating through the sanitary unit hoisting channel, of the connecting rods and the butt joint blocks is guaranteed, and the stability of the sanitary unit during hoisting is guaranteed.

The utility model relates to the field of auxiliary frock provides a kind of anti-roll bar link assembly device. Anti-roll bar link assembly device includes base;First clamping component, setting in base, first clamping component includes the clamping groove of being set in pair, clamping groove is used to place the node mandrel of anti-roll bar link, first clamping piece is arranged in clamping groove for the node mandrel clamped in clamping groove;Second clamping component, setting in base, second clamping component includes clamping rod, clamping rod is used to the bearing of the rod end of anti-roll bar link clamped between clamping rod and base. The anti-roll bar link assembly device can firmly fix node mandrel, avoid the positioning deviation caused by the thickness change of mandrel;Can eliminate the wobble clearance of rod end bearing;Reduce the data deviation after assembly;Adjustable first clamping piece can be adapted to node mandrel of different thickness without replacing parts, save the changeover adjustment time of traditional frock.

This utility model belongs to the field of display screen technology and discloses a computer display screen with an anti-shake structure. The display screen includes a support component on its back. Each end of the support component is movably connected to a connecting component. The bottom of the display screen is placed on a table via a dedicated bracket. The lower end of the support component is firmly attached to the table via the connecting components, and the upper end of the support component is firmly attached to the upper end of the back of the display screen via another connecting component. Due to the support component, with the cooperation of the connecting components, it can be connected between the display screen and the table. Furthermore, with the cooperation of the adjusting plug and the connecting cavity, the length of the support component remains stable under the connection of the display screen. This ensures that when the display screen is impacted, it receives cushioning without continuous high-frequency vibration, effectively reducing the shaking intensity of the display screen.

The tightness-adjustable fastener comprises a bolt structure, the bolt structure comprises a connecting block, a base plate, a bottom plate and a reinforcing structure, a rubber pad is installed in an installation groove, and a fixing screw rod is installed at the top end of an external screw rod. The mounting groove is formed in the bottom end of the threaded rod, and the mounting groove in the bottom end of the threaded rod is in threaded connection with the mounting screw rod at the top end of the external screw rod, so that the external screw rods with different lengths need to be used under different conditions, and the connecting screw rod at the top end of the external screw rod can be screwed into the mounting groove; the external screws are fixed to the bottom ends of the threaded rods, the length of the threaded rods can be adjusted by installing the external screws of different lengths, the threaded rods can adapt to different conditions, the rubber pads are elastic, and after the fixing screws are screwed into the installing grooves, the rubber pads can make the fixing screws more stably fixed; therefore, the purpose that the tightness-adjustable fastener is convenient to adjust the length of the threaded rod is achieved.

The utility model discloses a kind of clamping tooling components for high-precision three-coordinate measuring machine, including workbench, the upper surface of the workbench is provided with the backing plate for bearing the measured piece, the both sides of workbench are provided with clamping assembly, the below of workbench is provided with the drive mechanism for driving two clamping assemblies to be close to each other, drive mechanism is installed in the inside of movable seat, the below of workbench is provided with the slide rail for limiting the moving direction of movable seat, and the guide pillar for lifting workbench, the utility model is adjusted by first adjusting backing plate to be horizontal state, then measured piece is placed on backing plate, and according to the structure of measured piece, adjust movable seat to suitable position, finally control two clamping assemblies to be close to each other to two top blocks respectively with the both sides of measured piece contact, to stabilize the position of measured piece, avoid the measured piece position deviation when subsequent measurement, lead to the case of measurement result error.

The utility model discloses an aluminum alloy plate conveying device, and relates to the technical field of conveying devices. The device comprises a plurality of conveying units which are arranged in parallel and a power unit for providing conveying power, the conveying unit comprises a bottom frame, two symmetrical vertical seats are fixedly connected to the top of the bottom frame, a conveying roller is rotationally connected between the two vertical seats, a driving assembly is arranged on the outer side of one vertical seat, and connecting assemblies are arranged at the two ends of the bottom frame; the driving assembly comprises a driving shaft rotationally connected to the interior of one vertical seat, a driving bevel gear is fixedly connected to the middle of the driving shaft, a driven bevel gear meshed with the driving bevel gear is fixedly connected to one end of the conveying roller, and a connecting hexagonal rod is fixedly connected to one end of the driving shaft; the other end of the driving shaft is provided with a six-edge insertion hole matched with the connecting six-edge rod. By arranging the conveying units arranged in parallel, the length of the conveying device can be flexibly combined according to actual requirements, and the conveying device is suitable for different production scenes.

The invention discloses a tipping paper buffer control method and device, and the method comprises the steps: obtaining the ranging distance of a paper tape in real time, the ranging distance being the distance from the highest point of the paper tape sucked into a buffer to a range finder; calculating the buffer length of the paper tape according to the ranging distance, wherein the buffer length is the total length of the paper tape sucked into the buffer; and when the buffering length exceeds a preset buffering area, the output speed and / or the input speed of the paper tape are / is adjusted. According to the length of the paper tape between the double-end equipment, the running speed of the double-end equipment on the paper tape is regulated and controlled, so that the length of the paper tape between the double-end equipment is always kept stable, and the running stability of the equipment is improved.

The utility model relates to the technical field of medical instruments, and provides an arterial thrombus protection device and an embolism system. The filtering piece comprises a shape memory skeleton and a woven net film which is arranged on the shape memory skeleton and is used for intercepting thrombus; the two ends of the shape memory framework are closed up through the first annular piece and the second annular piece correspondingly. The first annular piece fixedly sleeves the guide wire, and the second annular piece slidably sleeves the guide wire; one end of the traction wire is connected with the second annular piece, and the other end is in vitro. According to the arterial thrombus protection device, the filtering piece can be adjusted in a self-adaptive mode according to the size of a blood vessel, the filtering piece can be better attached to the blood vessel, and therefore the effect of capturing fallen plaques or thrombus is improved, and the risk of an operation is reduced; and moreover, the position movement of the filtering piece caused by the length change of the guide wire placed in the body can be avoided, and the operation effect and safety are ensured.

The utility model relates to the technical field of farm tool buffering structures, in particular to a profiling interconnection buffering safety protection mechanism. An energy storage component is provided with a pressure conveying end. One end of the oil pipe component is connected with the pressure conveying end of the energy storage component, the other end of the oil pipe component is provided with a pressure relief end, and the pressure relief end is provided with a valve component; the liquid inlet end of the hydraulic component is connected with the pressure relief end, and the hydraulic end of the hydraulic component is connected with execution equipment. Stable pressure transmission is conducted through the energy storage component, the hydraulic component keeps the stable length, and therefore stable supporting is provided for the execution component, the quadrilateral-imitating structure is adopted and connected to buffering equipment and a supporting point, the impact force borne by the buffering equipment is reduced for the equipment needing to be buffered in a mechanical and hydraulic mode, and the buffering effect is improved. Therefore, the overall service life is prolonged.

The utility model discloses a novel bed guardrail which comprises a first screen cloth guardrail and a second screen cloth guardrail which are arranged in parallel, the first screen cloth guardrail and the second screen cloth guardrail are respectively provided with a fixed insertion plate, the outer side of the first screen cloth guardrail is provided with a guide channel, the second screen cloth guardrail is matched with the guide channel in a sliding mode, and the first screen cloth guardrail and the second screen cloth guardrail are arranged in parallel. A limiting mechanism is arranged on the outer side face of the second screen cloth guardrail and comprises an inserting rod, and the inserting rod is connected with a corresponding inserting hole which is located in the first screen cloth guardrail and penetrates through the side wall of the guide channel in an inserted mode. A plurality of elastic pushing and pressing mechanisms arranged on the inner wall of the guide channel abut against the inner side face of the second screen cloth guardrail. The device is convenient to adjust and use, and the overall stability is good due to the arrangement of the elastic pushing and pressing mechanism.

The embodiment of the invention discloses a gene sequencing method and a gene sequencing system. The gene sequencing method comprises the steps that a gene sequencing chip is provided, the gene sequencing chip comprises a plurality of micro-reaction chambers and a flow channel communicated with the micro-reaction chambers, one end of the flow channel is a sample inlet end, the other end of the flow channel is a sample outlet end, and the inner surface of the gene sequencing chip is subjected to hydrophobic modification; a sequencing buffer solution is introduced into the sample introduction end of the flow channel; introducing isolation gas into the sample introduction end of the flow channel to form an isolation gas column; introducing a water-phase reaction liquid into a sample introduction end of the flow channel; introducing sealing gas into the sample introduction end of the flow channel to form a sealing gas column; and carrying out a sequencing reaction through the gene sequencing chip. The gene sequencing method can at least partially solve the problem that in the prior art, the utilization rate of water-phase reaction liquid with high cost is low.

The utility model relates to the technical field of high-voltage insulation pads, and discloses a reel type high-voltage insulation pad which comprises a rolling shell, a high-voltage insulation pad body is arranged in the rolling shell, the upper end of the high-voltage insulation pad body is fixedly connected with a limiting strip, the rolling shell internally comprises a rolling assembly, the rolling assembly comprises a rolling rod, and the rolling rod is fixedly connected with the high-voltage insulation pad body. A first cavity is formed in the right face of the winding shell, a volute spiral spring is arranged in the first cavity, the winding rod can be conveniently driven to rotate by arranging the volute spiral spring, the winding rod can automatically wind the high-voltage insulation pad body, the trouble that the high-voltage insulation pad body needs to be manually wound is reduced, and the winding efficiency is improved. And under the action of a limiting gear and limiting clamping teeth, the limiting clamping teeth clamp the limiting gear conveniently, so that rotation of the winding rod is limited, the use length of the high-voltage insulation pad body is limited, and the situation that equipment is wound in the winding shell when the high-voltage insulation pad body is used is avoided.

This utility model relates to the field of braking device technology, specifically a tow truck front wheel braking device, including a frame, a tow bar, a brake assembly, and a locking member. The frame includes a body and wheels, with the wheels rotatably mounted on the body. The tow bar is hinged to the end of the body away from the wheels. The brake assembly is mounted on the body, and the tow bar can rotate along the hinged position to engage with and drive the brake assembly to brake the wheels. The locking member is mounted on the tow bar, and after the tow bar drives the brake assembly to brake the wheels, the locking member engages with the brake assembly. By using the locking member, when the tow bar rotates along the hinge to engage with the brake assembly, the braking state can be locked, thus achieving continuous braking. Furthermore, the locking member is hinged, and rotating along the hinged position allows for rapid release of the brake.

The utility model relates to welding equipment technical field discloses a kind of gas shielded welding wire feeding equipment, the gas shielded welding wire feeding equipment, including machine body, the inner wall rotation of machine body is connected with winding drum, the inside bottom surface of machine body is fixedly connected with wire feeder, the lateral wall rotation of machine body is connected with take-up roller, the lateral wall of take-up roller is provided with the pay-off assembly of control power cord length, the lateral wall of machine body is provided with the wire pressing assembly of wire to the ground.The gas shielded welding wire feeding equipment, pawl and ratchet wheel engagement, locking take-up roller, power cord cannot continue to release, to keep the length of cable stable, avoid cable drag or scattered, improve the cleanness of work environment, wire to the ground, make cable closely ground arrangement, cable closely ground after no longer form elevation, when footstep slip, no obvious resistance is generated, eliminate protruding obstacle, reduce the risk of tripping, improve the work safety of welding site.

The utility model relates to one-piece work clothes which comprise a work clothes body, the work clothes body comprises an upper garment and trousers which are connected into a whole, adjusting rings are arranged on sleeve parts of the upper garment and trouser legs of the trousers, the number of the adjusting rings is at least two, the two adjusting rings are arranged at different positions of the sleeve parts or the trouser legs in a surrounding mode, and an adjusting rope is arranged between the two adjusting rings in a penetrating mode. The adjusting rope is arranged between the two adjusting rings in a reciprocating penetrating mode, and a fixing buckle is arranged at the end of the adjusting rope. The distance between the two adjusting rings can be adjusted by pulling the adjusting rope, then adjustment of the length of the sleeve or the length of the trouser leg is achieved, adjustment is convenient, and the adjustment range is controllable; the adjusting rope is arranged between the adjusting rings in a reciprocating penetrating mode, the distance between the two adjusting rings can be evenly adjusted, the length of the sleeve part or the trouser leg can be stably adjusted, meanwhile, the fixing buckle is arranged at the end of the adjusting rope, the position of the adjusting rope can be fixed, and fixing is convenient.

The utility model discloses a pallet fork auxiliary device for a forklift, which relates to the technical field of engineering machinery and comprises a forklift main board, a plurality of clamping grooves are arranged on the inner wall of the forklift main board, and a mounting mechanism is arranged on the inner wall of the forklift main board. The installation mechanism comprises a plurality of clamping blocks, the outer walls of the clamping blocks are connected with the inner wall of the forklift main plate in a sliding mode, and the outer wall of the end, away from the forklift main plate, of the threaded rod is fixedly connected with a rotating block. The rotating block drives the threaded rod to rotate, the threaded rod rotates to drive the threaded barrel to move, the threaded barrel drives the clamping block to move, the clamping block is rotated into the clamping groove, then the clamping block is used for fixing the position of the whole device, the device is installed, and the device can be conveniently and rapidly installed and disassembled; and meanwhile, the position change of the device during use can be prevented.

The utility model discloses a long-endurance high-strength tea-leaf picker, which relates to the technical field of tea-leaf pickers, and comprises an electric tea-leaf picker body and a storage battery, the electric tea-leaf picker body is arranged on one side of the storage battery, a lead is arranged between the electric tea-leaf picker body and the storage battery, the electric tea-leaf picker body is electrically connected with the storage battery through the lead, and the storage battery is electrically connected with the storage battery through the lead. A fixing shell is arranged between the electric tea picking machine body and the storage battery, a first cavity is formed in the rear side of the interior of the fixing shell, through holes are formed in the two sides of the first cavity, the wire penetrates through the two through holes, a rotating rod is rotationally arranged in the middle of the first cavity, and the side wall of the middle end of the wire is fixedly connected with the rod wall of the rotating rod; a second cavity is formed in the front side of the first cavity, and the front end of the rotating rod penetrates through the second cavity and extends to the outer side of the fixing shell. The power line of the battery can be stored and adjusted, so that people with different heights can use the battery conveniently.

The utility model belongs to the technical field of wrenches, and discloses an innovative wrench convenient for accurate positioning, which comprises a wrench rod, a cross-shaped component is mounted on the surface of the wrench rod, the cross-shaped component comprises a cross-shaped wrench handle, the cross-shaped wrench handle is mounted at the top end of the wrench rod, a connecting column is arranged at the bottom end of the wrench rod, and the cross-shaped wrench handle is connected with the connecting column. A cross twisting block is installed at the bottom end of the connecting column, a metal sleeve is installed at the top end of the connecting column, the wrench rod is slidably connected to the interior of the metal sleeve, a position positioning assembly is installed on the surface of the metal sleeve, and anti-skid threaded grooves are formed in the surfaces of the four ends of the cross wrench handle. The metal sleeve and the wrench rod are both made of steel materials and used for enhancing the overall strength, the thickness of the inner wall of the metal sleeve is large, and the wrench has the advantages that the wrench can be matched with a planter in a protective cover, an operator can conduct screwing treatment conveniently, and the length of the wrench can be adjusted according to different use conditions.