5567 results about "Wrench" patented technology

The invention provides an accurate leveling mobile culture bed solving the problems that the traditional mobile culture bed is inconvenient to adjust in height and cannot ensure that the bed surface is absolutely level. The height adjustment and the level adjustment of the accurate leveling mobile culture bed are implemented through the height adjustment and the level adjustment of a rolling shaft support, and the height adjustment and the level adjustment of the rolling shaft support are implemented through rotating a hold-down nut on a screw rod by using a spanner to adjust the relative distance between the rolling shaft support and a gantry support and the self level of the rolling shaft support. Because the rolling shaft support and the gantry support are connected by a leveling screw and fixed by the nut, and the spacing adjustment and the level adjustment between the rolling shaft support and the gantry support are completed by the relative movement between the leveling screw and the hold-down nut, the continuous smooth adjustment between the rolling shaft support and the gantry support can be implemented to achieve the absolute level of the culture bed surface.

The invention discloses a surgical instrument, and belongs to the field of medical instruments. The surgical instrument comprises a handle assembly, the handle assembly comprises a handle shell and a driving assembly located in the handle shell, and the driving assembly is suitable for providing driving force for an end executing assembly; the manual reset assembly is suitable for being matched with a clutch wrench, and the clutch wrench can be operated to release the transmission connection of the driving assembly through the manual reset assembly; the shielding shell is detachably arranged on the outer side of the handle assembly in a covering mode; the clutch transmission part is arranged on the shielding shell, the clutch transmission part comprises a clutch trigger rod, the near side end part of the clutch trigger rod is in transmission connection with the clutch wrench in an operable mode, and the far side end part of the clutch trigger rod is in transmission connection with the manual reset assembly in an operable mode. Manual resetting of the surgical instrument is safe and reliable, part of structures can be reused, and reused components make sterile contact with the outside in the manual resetting process.

The invention discloses a method for testing the connection strength of a bolt fastener, and relates to the technical field of fastening mechanical analysis. The bolt fastener connection strength testing method comprises the following steps: acquiring bolt data through a built-in sensor in an electric wrench, analyzing, classifying and transmitting the bolt data to a relay station to obtain corresponding response bolt data, then sequencing the response bolt data according to priorities, and uploading the response bolt data to a cloud platform according to network conditions; prompting operation is carried out through the cloud platform and is fed back to the relay station; the effect of improving the accuracy of the connection strength test of the bolt fastener is achieved, and the problem that the accuracy of the connection strength test of the bolt fastener is low due to discontinuous signals in the prior art is solved.

An impact wrench (10) including a rotary impact drive (22), wherein the rotary impact drive (22) has a drive shaft (28) running along a longitudinal axis (L), wherein the rotary impact drive (22) has a striker (30) arranged so as to be movable along the longitudinal axis (L), and an anvil head (32) which can be contacted by the striker (30) in a circumferential direction (U) relative to the longitudinal axis (L). The rotary impact drive (22) has at least one impact damper (40, 42, 44) which is configured to damp an impact of the striker (30) in a longitudinal impact direction (LR) parallel to the longitudinal axis (L), in particular on the anvil head (32). Thus undesired vibrations can be reduced or prevented, so that health risks associated with use of the impact wrench (10) can be reduced.

An aero-engine nut tightening machine arm device belongs to the technical field of aero-engine automatic assembly and comprises a rotary indexing assembly, a vertical lifting assembly, a central tightening assembly, a wrench overturning posture adjusting assembly and an auxiliary stability augmentation assembly. The rotary indexing assembly is connected with an aero-engine blade disc rotor through an external tool; the vertical lifting assembly is arranged above the rotary indexing assembly; the pivot tightening assembly is arranged in the middle of the vertical lifting assembly; the wrench overturning posture adjusting assembly is arranged between the vertical lifting assembly and the pivot tightening assembly. The auxiliary stability augmentation assembly is arranged at the bottom of the central tightening assembly. Compared with a traditional manual nut fastening process, the aircraft engine nut tightening machine arm device has the advantages that the labor intensity of workers can be greatly reduced, the execution of the nut fastening process is completed in an automatic mode, the consistency of the assembly quality process is effectively improved, the nut fastening torque precision is high, and the production efficiency is improved. And the production and assembly efficiency is further improved.

An adjustable external fixator and fixator kit for angle correction on a bone comprising a head element, arm, shaft element, and adjustable distraction element. Sizing inserts of different discrete sizes are provided and are installable between ends of the head element and ends of the arm. When installed, the fixator can fit patients of any size. The sizing inserts can be blocks or rails secured by threaded fasteners. The fixator and kit may also comprise a wrench releasably secured to the shaft element can be used to adjust a length of the distraction element. The fixator and kit may also comprise an angle measurement tool to measure angle of distraction.

The invention discloses a double-acting integrated hydraulic nut and a hydraulic nut system. The double-acting integrated hydraulic nut comprises a cylinder body, a piston, a cylinder cover, a locking nut, an outer hexagon head bolt and a locking sleeve. A mounting plane attached to a workpiece is arranged at the bottom of the cylinder body, and the piston is arranged in an inner cavity of the cylinder body in an axial sliding mode. The outer hexagonal head bolt sequentially penetrates through the axial through hole of the piston and the bottom of the cylinder body, and the threaded end of the outer hexagonal head bolt is meshed with a workpiece in a threaded mode. The cylinder cover is arranged at the top of the cylinder body; the locking nut is in threaded connection with the piston rod and is in contact with the top surface of the cylinder cover; a pressurizing oil port connected with a hydraulic pump station is formed in the side wall of the cylinder body. The hexagonal head of the outer hexagonal head bolt is sleeved with the locking sleeve which is in driving connection with the electric wrench. Due to the fact that the bearing seat bolts are compact in layout and large in bolt pre-tightening force requirement, the experiment platform can be rapidly mounted and dismounted, and working time and cost are greatly reduced.

The invention discloses a lightning arrester installation tool, and belongs to the technical field of distribution network operation and maintenance. The tool comprises a connecting clamping jaw, a limiting plate, a distance adjusting module, a clamping clamping jaw, a drainage wire clamp module and a base hook, wherein the connecting clamping jaw can be used for pre-assembling the lightning arrester on the ground, and an impact wrench is used for automatically tightening the lightning arrester; the limiting plate is accurately positioned through the guide long plate; the distance adjusting module adjusts height through an electric push rod and a guide rail; the clamping jaw is driven by the steering engine to clamp the lightning arrester; the base hook hangs the wire by means of force, and the roller assists in stabilizing. The installation method comprises ground pre-assembly and high-altitude installation, the insulator does not need to be dismantled, the on-pole operation time is shortened by 50%, and the efficiency is doubled. Power failure can be avoided, operation and maintenance intensity is reduced, power supply reliability is improved, and the method is suitable for distribution network non-power-failure operation.

The invention discloses an adjustable automatic feeder base, and relates to the technical field of feeder bases. Comprising a supporting base part, an adjusting piece is installed on the supporting base part, and the adjusting piece is used for being installed at the bottom of an automatic feeder frame through bolts; a detection adapter is mounted on the adjusting piece; a belt attaching part is mounted on the detection adapter; the belt laminating piece is used for laminating a belt of the automatic feeder; the belt attaching wheel can be attached to a belt to roll, an extrusion delay switch is automatically controlled, real-time detection can be achieved when the automatic feeder is kept in the running state, and a positioning electromagnet is controlled to magnetically attract and attach to the bottom of a wrench butt joint plate to conduct limiting work. The adjustable automatic feeder base solves the problem that an existing adjustable automatic feeder base is inconvenient to automatically limit shutdown operation and adjustment.

The utility model discloses a quick connecting and clamping device which comprises a core rod, a pulling and screwing assembly arranged on the core rod and an elastic assembly connected to the core rod in a sleeved mode, and the pulling and screwing assembly comprises a cam handle rotationally connected to one end of the core rod and a spring piece movably arranged at the other end of the core rod. The cam handle is connected with the end of the spring piece, a first flat position is arranged at the end, close to the spring piece, of the core rod, an installation groove is formed between the first flat position and the core rod, a locking block is arranged on the core rod, a first kidney-shaped hole is formed in the locking block, and a second kidney-shaped hole is formed in the first kidney-shaped hole. The locking block penetrates through the first flat position through the first kidney-shaped hole and is connected into the mounting groove, and when the locking block rotates till the length direction of the first kidney-shaped hole is inconsistent with the length direction of the first flat position, the first flat position limits movement of the locking block. The quick connecting and clamping device has the advantages of being high in vibration resistance and impact resistance, reliable in connection, capable of being quickly disassembled and assembled, capable of being repeatedly disassembled and assembled for use, convenient to disassemble and assemble, easy to machine and manufacture and the like.

The utility model discloses a mining explosion-proof electric wrench, which comprises an explosion-proof electric wrench device, a grab handle, an electric wrench explosion-proof shell, a driving main shaft with one end inserted into the electric wrench explosion-proof shell, and a nut sleeve head connected with the end part of the driving main shaft, a first guide ring and a second guide ring are arranged on the outer surface of the explosion-proof shell of the electric wrench; the limiting piece comprises an attaching plate installed on the surface of the explosion-proof shell of the electric wrench, a connecting rod connected with one end of the attaching plate and a fixing ring connected with the other end of the connecting rod; the knocking assembly comprises a moving rod penetrating through the fixing ring, a knocking head connected with one end of the moving rod and a reset spring arranged on the outer side of the moving rod in a sleeving mode; the anti-explosion electric wrench is provided with a knocking design for knocking a nut dismantled in the nut sleeve head, the thumb hooks the pull ring and pulls and loosens the pull ring, the pulling action is repeated, the movable rod drives the knocking head to move, the knocking head penetrates into the nut sleeve head, and the knocking head knocks the nut left in the nut sleeve head to enable the nut to fall off.

The invention discloses a wire-drawing die for steel wire production, and relates to the technical field of wire-drawing dies, the wire-drawing die comprises a die seat, a cleaning and lubricating mechanism, an ejection mechanism, a mounting groove, a wire-drawing die and a locking mechanism; the motor drives the rotating seat to rotate, the flushing and lubricating assembly and the cleaning bristles are matched, efficient cleaning and lubricating of the steel wires are achieved, and the surface quality of the steel wires is improved; the filtering device is arranged, lubricating liquid is finely filtered, cleanliness of the lubricating liquid is guaranteed, and adverse effects of impurities on steel wires and molds are avoided; a specific locking mechanism is utilized, an adjusting head is rotated through an internal hexagonal wrench, a series of gears and a rotating ring body are driven, rapid locking and loosening of a wire-drawing die by a slope clamping block are achieved, and installation and replacement of the wire-drawing die are greatly facilitated; after the wire-drawing die is loosened, the ejection mechanism can automatically eject out the wire-drawing die, so that the wire-drawing die can be conveniently checked, maintained or replaced, and the production efficiency is improved.

The utility model discloses a hand-operated wrench assembly, a hand-operated knife return device and an electric anastomat, the hand-operated wrench assembly comprises a hand-operated wrench handle, a hand-operated wrench shaft sleeve and a hand-operated wrench rotating shaft, and the hand-operated knife return device comprises a hand-operated wrench assembly, a knife return gear shaft, a knife return transmission gear, a motor gear and a rack. The tool retracting gear shaft and the tool retracting transmission gear can be driven to move upwards by rotating the manual wrench assembly, the tool retracting transmission gear is separated from the motor gear, the rack can be driven to retract through the tool retracting transmission gear by continuously rotating the manual wrench assembly, manual tool retracting is achieved, and the electric anastomat comprises a manual tool returning device. By means of the mode, when the electric gear is rotated upwards through the lower half section of the wrench assembly, the middle section of the wrench is kept static, the tool retracting transmission gear can be easily pulled out, the wrench is further used as a torsion input tool after being pulled out, manual tool retracting is achieved, operation difficulty and failure risks are reduced, large torque is generated with small force, and the tool retracting transmission gear can be pulled out easily. And rapid manual tool retracting is achieved.

A skewer-wrench combination includes and a skewer, an Allen key and a compensator. The skewer includes a thread at an end, a non-circular bore in an opposite end, and two grooves in a wall of the non-circular bore. The compensator includes two bent sections fitted in the grooves. The Allen key includes a non-circular rod compliant with the non-circular bore. The non-circular rod is smaller than the non-circular bore so that the former is easily insertable in the later. The non-circular rod is in tight contact with the bent sections of the compensator as the non-circular rod is inserted in the non-circular bore.

The invention discloses intelligent bolt fastening equipment which comprises a fixing mechanism, a translation mechanism, a shifting mechanism, a wrench floating mechanism, a wrench assembly, a sleeve measuring device and an optical switch assembly. Wherein the fixing mechanism is used for fixing the whole bolt fastening equipment on a device to be fastened; the translation mechanism is fixed on the fixing mechanism, the turning mechanism is fixed on the translation mechanism, the wrench floating mechanism and the sleeve measuring device are fixed on the turning mechanism, the wrench assembly penetrates through the wrench floating mechanism and the turning mechanism, and the sleeve measuring device measures whether a bolt sleeve at the tail end of the wrench assembly is matched with a to-be-fastened bolt or not; the translation mechanism drives the turning mechanism, the wrench floating mechanism, the wrench assembly and the sleeve measuring device to move up and down, and the optical switch assembly triggers and measures the displacement of the up-and-down movement. The bolt fastening device is wide in application range, high in bolt fastening precision and accuracy and long in service life.

An engagement structure of a ratchet wrench, the ratchet wrench contains: a body which including a drive head, a ratchet portion, and the engagement structure. The engagement structure includes a through orifice, a first defining notch, a second defining notch, a receiving notch, and a spring. An abutting member includes a first arcuate cutout, a coupling column, a locking orifice, and a first limitation protrusion. A retainer is mounted on the through orifice and includes a second arcuate cutout, a connection trough, a passing aperture, and a second limitation protrusion. When the abutting member is received in the through orifice, the first limitation protrusion is engaged in the first defining notch, the coupling column is connected with the connection trough, and a locking element is locked with the locking orifice. The second limitation protrusion is engaged in the second defining notch, and the spring abuts against the coupling column.

The invention discloses a bolt tightening force control device and method based on bolt axial force real-time detection, and relates to the technical field of bolt tightening. The bolt tightening force control device based on bolt axial force real-time detection comprises the following detection methods that a probe transmits a measurement signal to a signal processing device in real time; the signal processing device judges whether an axial force set value is reached or not, before the axial force set value is reached, the hydraulic pump outputs hydraulic power, the hydraulic wrench drives the nut to rotate, the nut rotates to generate tightening force, meanwhile, the axial force of the bolt is measured in real time, and the hydraulic pump is controlled to stop outputting the hydraulic power till the axial force set value is reached. The hydraulic pump is controlled to drive the hydraulic wrench by directly measuring the axial force, interference factors such as friction force in the rotating process of bolts and nuts are eliminated, control precision and consistency are reliably guaranteed, and therefore real-time measurement of the axial force is achieved.

The invention discloses stepless variable-pitch tightening equipment special for aviation equipment nuts. The stepless variable-pitch tightening equipment comprises a tightening machine, a horizontal posture adjusting mechanism, a length-adjustable tightening arm mechanism, a rotary posture adjusting and floating buffering mechanism, a screwing motor, a screwing motor support, a nut tightening force transmission sleeve, a wrench stepless variable-pitch executing mechanism, a nut screwing wrench, a force transmission shaft and a three-channel flexible cable traction mechanism. Under the condition that the basic function of nut tightening is not changed, tightening equipment is endowed with stepless pitch-variable capacity, even if nut mounting points in a cavity are not uniformly distributed in the circumferential direction or the radial sizes of different positions are different, the radial position of the nut tightening wrench can be dynamically changed through stepless pitch-variable adjustment, and the nut tightening effect is improved. According to the nut tightening wrench, the nut screwing sleeve on the nut tightening wrench can accurately move to any nut mounting point position, so that nut tightening work at different positions in the cavity can be smoothly completed, the use scene of tightening equipment is further expanded, and the application range of the tightening equipment is greatly widened.

The invention relates to the related technical field of electric wrenches, and discloses an electric wrench based on an integrated protection assembly, which comprises a shell, a protection cylinder is mounted at one end in the shell, two fixed rings are fixedly arranged on the inner wall of the protection cylinder, and movable rings are annularly and slidably arranged on the inner walls of the two fixed rings respectively; protection assemblies are arranged on the inner walls of the two movable rings, and tightening assemblies are arranged in the protection assemblies; the six push rods can be guided through radial outer-side movement of the six balancing weights, so that the six push rods axially slide, and the six movable rods further radially move inwards through axial sliding of the six push rods. The six movable rods further radially move inwards to compress the first springs to generate elastic force, under the elastic force effect of the six first springs, the clamping and fixing effect of the six clamping blocks on the nut is gradually improved, and the clamping force of the tightening assembly on the nut can be adjusted according to the rotating speed of the tightening assembly; and the situation that the nut slips in the screwing process is avoided.

The utility model discloses a hoisting mounting rack for an angle iron clamping device. The hoisting mounting rack comprises a hoisting bottom plate, a spring pressing plate assembly, a locking hook assembly, an electric wrench assembly and a hoisting ring, the hoisting bottom plate is a pi-shaped thick plate and is provided with an opening, and the upper surface of the hoisting bottom plate is used for fixedly arranging the spring pressing plate assembly; the two locking hook assemblies are symmetrically located on the two sides of the spring pressing plate assembly. And the electric wrench assembly. And the four lifting rings are respectively arranged at four corners of the lifting bottom plate. The quick-mounting clamping device is clamped by the quick-mounting clamping device, the quick-mounting clamping device is lifted to angle iron of an iron tower where the quick-mounting clamping device needs to be mounted through lifting equipment, then quick mounting is achieved, climbing operation of personnel is not needed in the whole process, mounting is convenient and fast, and safety is high.

The utility model provides a special spanner with an anti-falling structure, which relates to the technical field of special spanners, and comprises a handle, spanner rectangular openings are respectively arranged on two sides of the handle, anti-falling mechanisms are arranged at the upper end and the lower end of the handle, each anti-falling mechanism comprises a placing groove, the placing grooves are arranged on the surfaces of the upper side and the lower side of the handle, and the handle rectangular openings are arranged on the placing grooves. Connecting belts are movably mounted in the containing grooves correspondingly. When a user uses the wrench, the connecting belt can be pulled upwards through the groove, so that the connecting belt is tightly attached to the hand skin of the user through pushing of the spring, the connecting belt can disperse the hand stress of the user, the hand fatigue feeling caused by long-time operation is reduced, and the safety of the user is improved. Meanwhile, the connecting belt is matched with the non-slip mat, so that the friction degree between the hand of the user and the handle is improved, the situation that the hand of the user slips off the handle is avoided, and the working process is more stable and safer.

The invention discloses a surgical instrument, and belongs to the field of medical instruments. The surgical instrument comprises a handle assembly, the handle assembly comprises a handle shell and a driving assembly located in the handle shell, and the driving assembly comprises a driving motor and a driving gear set and is suitable for providing driving force for an end executing assembly; the manual reset assembly comprises a clutch screw rod which can be operated by a wrench to rotate relative to the handle shell, and a gear bracket which is in threaded connection with the clutch screw rod; partial area of the gear bracket acts on the driving gear set; the clutch screw rotates to drive the gear support to move in the axis direction of the clutch screw, and the drive gear set is made to be in the meshing releasing state or the meshing state. According to the surgical instrument, part of structures can be reused, and manual resetting is safe, reliable, convenient and fast.

The invention discloses a modular recoverable assembly type cement pole and an assembly process thereof, and relates to the field of cement telegraph poles. The modularized recoverable assembly type concrete pole comprises a modularized concrete pole unit, an installation unit and a cable supporting unit, the modularized concrete pole unit is of a multi-section splicing structure, the installation unit is installed on the ground in a semi-buried mode, the modularized concrete pole unit is installed on the top of the modularized concrete pole unit, and the cable supporting unit comprises a supporting arm, a cable installation frame and a traction piece. According to the modular recoverable assembly type concrete pole, by arranging the traction piece, when the modular recoverable assembly type concrete pole is used, a maintainer inserts an outer hexagon wrench into the top end of a worm and then rotates the worm, a cable mounting frame moves to the position of a fixing part, at the moment, a wedge-shaped block and the fixing part are automatically locked, and meanwhile an annular traction steel cable is fixed through the self-locking performance of a worm gear and the worm; therefore, the cable mounting rack is convenient to overhaul and can be effectively fixed during use.

The utility model relates to the field of wrenches for fastening, connecting, detaching or clamping, in particular to a device for screwing a nut. The device for screwing the nut comprises a shell, the lower end of the shell is open and provided with at least two layers of nut sleeves, the nut sleeves are mutually nested together and movably matched in the vertical direction, the upper end of each nut sleeve is connected with more than two tail rods, and a guide seat is further arranged in the shell. The tail rods are matched with the guide seat in a guiding mode in the vertical direction, a lead screw seat is further arranged on the portion, above the guide seat, of the shell, lead screws corresponding to the tail rods are installed on the lead screw seat, vertical screw holes are formed in the tail rods, the lead screws are matched with the corresponding screw holes, and the lead screws are matched with the corresponding screw holes. The lead screws corresponding to the tail rods connected to the same nut sleeve are in synchronous transmission connection through flexible transmission devices, and the flexible transmission devices are staggered in the vertical direction. The tensioning device solves the problem that an existing tensioning device is poor in adaptability to nuts of different specifications.

The invention relates to the technical field of clamps, and discloses a pneumatic ratchet wrench test clamp self-locking anti-vibration tool which comprises a base, a ratchet wrench and a brake pad and further comprises a pneumatic control clamp installed on the base, the pneumatic control clamp is used for limiting the ratchet wrench, and the output end of the ratchet wrench is matched with the brake pad. The pneumatic control clamp comprises two sets of half shells which are symmetrically fixed and used for clamping a ratchet wrench, and air inducing cavities are formed in the half shells; the clamping assemblies are mounted in the air inducing cavity and extrude the ratchet wrench under the action of wind power; and the ventilation shell is mounted on the outer sides of the two groups of half shells and is used for closing and opening the end parts of the two groups of half shells. Through the design of the pneumatic control clamp, the continuous clamping force compensation effect driven by wind power is achieved, the clamping assembly is always driven by airflow in the testing process to be kept in a screwed state, micron-sized gaps generated by vibration can be offset in real time, and the problem that clamping fails due to stress relaxation of a traditional rigid clamp is solved.

The utility model provides a supporting column dismounting and mounting structure and a mobile workstation, the supporting column dismounting and mounting structure comprises a mounting base, a pressing and holding part and a locking assembly, and the mounting base can be mounted on a mounting object; one end of the hold-down part is connected to the mounting base, the other end of the hold-down part is provided with a connecting end, and the hold-down part and the mounting base can define a mounting hole; the locking assembly comprises a locking wrench and a connecting part, the connecting end is provided with an open hole, the connecting part can penetrate through the open hole, one end of the connecting part is connected with the mounting base, the other end of the connecting part is movably connected with the locking wrench, and the locking wrench can press the connecting end to move so that the pressing part can press the supporting column in the mounting hole. According to the mobile work station, a user can complete locking and unlocking of the mounting base and the supporting column by pulling tightly or pulling away the locking wrench, operation is easy, and the user can conveniently and rapidly disassemble, assemble and move the work station.

The utility model relates to the technical field of crack repairing and discloses a crack repairing machine for highway engineering, which comprises a frame, rollers are mounted on two sides of the outside of the frame, a storage box is fixedly connected to the upper portion of the frame, and a transfer pump is fixedly connected to the front side of the outside of the storage box. The input end of the material pumping pump is fixedly connected to the interior of the material storage box, the output end of the material pumping pump is fixedly connected with a conveying pipe, a discharging head is installed at the bottom of the conveying pipe, moving blocks are slidably connected to the two sides of the interior of the discharging head, and moving rods are fixedly connected to the left sides of the exteriors of the moving blocks; and the outer part of the moving rod is fixedly connected with a grip. According to the utility model, the discharge head of the crack repairing machine is convenient to replace, the problem that a bolt is manually unscrewed or tightened through a wrench in a traditional replacement mode is solved, the mode is simple and convenient to operate, time-saving and labor-saving, and the working efficiency of the crack repairing machine is improved.

The utility model relates to a vehicle hydrogen storage bottle opening sealing structure, which comprises a plastic inner container, a bottle valve seat, a joint and a locking nut, the bottle valve seat is positioned at the bottle opening of the plastic inner container, the joint is tightly connected in the bottle opening of the plastic inner container through a sealing structure, and the sealing structure and the plastic inner container are sealed by pressing the joint downwards through the locking nut and extruding the sealing structure. The metal connector, the sealing ring and the bottle opening of the plastic inner container are extruded to achieve sealing, the plastic inner container adopts the injection molding technology, the cylinder valve seat serves as an embedded part, the shoulder of the cylinder valve seat is wrapped in the plastic inner container, the binding force of the cylinder valve seat and the plastic inner container in the long-term working process of the gas cylinder is guaranteed, separation is avoided, and the service life of the gas cylinder is prolonged. The cylinder valve seat, the connector and the locking nut are simple in structure and easy to machine, the cylinder valve seat is fixed through the fixing tool, sealing can be achieved by screwing the locking nut through a tool wrench, and installation is convenient.

1. Name of the design product: Ratchet wrench. 2. Use of the design product: For tightening and loosening bolts and nuts. 3. Design key points of the design product: Lies in the shape. 4. Picture or photograph that best shows the design key points: Perspective view 1.

The invention relates to a wrench device for eliminating a gap, and belongs to the field of fastener assembly. Comprising a telescopic mechanism, a limiting mechanism, a base and a gear sleeve ring, the axial direction of the gear sleeve ring is perpendicular to the axial direction of the telescopic mechanism, a sleeve hole is formed in the gear sleeve ring in the axial direction of the gear sleeve ring, one end of the telescopic mechanism is rotatably installed at one end of the base, and the other end of the telescopic mechanism is arranged in the gear sleeve ring. One end of the limiting mechanism is rotatably installed on the base, the other end of the limiting mechanism is meshed with or separated from the gear lantern ring, the telescopic mechanism movably penetrates through the limiting mechanism and the gear lantern ring, and the gear lantern ring is rotatably installed at the other end of the base. The clearance between the gear lantern ring and the to-be-tightened bolt cap can be eliminated, and then the bolt cap can swing and be tightened in a small-amplitude mode in a small-swing space.