3950 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 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 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.

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 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.

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 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 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 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 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 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.

The invention discloses an anti-loose structure nut and a using method thereof, and the anti-loose structure nut is composed of an upper nut and a lower nut; one end of the upper nut is of a conical surface structure, and the inclined angle of the conical surface structure relative to the central axis of the upper nut is 16 degrees; a groove is formed in the conical surface structure; the upper portion of the lower nut is an inner taper hole, the lower portion of the lower nut is a straight hole, and the included angle between inclined generatrixes on the two sides of the inner wall of the inner taper hole is 16 degrees. The diameter of the inner taper hole is smaller than that of the conical surface structure. The using method comprises the following steps that (1) the lower nut is screwed into the bolt penetrating into the interlayer; and (2) screwing the upper nut into the inner taper hole of the lower nut by adopting a hexagonal wrench. The device is simple in structure and easy to process and manufacture; common carbon steel or stainless steel materials are adopted, so that the manufacturing cost is low; the locking torque is large and stable, and the anti-loosening performance is excellent; during installation, the locking torque can be adjusted according to actual requirements; and the locking torque is stable and reliable, and can be repeatedly disassembled and used.

The horizontal opening hatch cover device for the submersible comprises a hatch body, a cover body is installed on the hatch body in a sealed mode, a rotating support is installed outside the center position of the cover body through a rotating ring, a support is arranged beside the hatch body and connected with the rotating support through a rotating shaft, and the rotating support turns over around the rotating shaft. Therefore, the support is rotated to drive the cover body to be opened and closed. Two symmetrical hatch seats are installed on the hatch body, a wrench is installed on each hatch seat in a matched mode, a gear is arranged at the bottom of each wrench, arc-shaped racks are symmetrically arranged in the circumferential direction of the cover body, and the arc-shaped racks are meshed with the gears; a transmission mechanism is further installed outside the cover body and used for balancing air pressure on the two sides of the cover body, and work is stable and reliable.

The utility model relates to the technical field of outdoor articles, and discloses an alpenstock telescopic rod lock catch structure which is characterized in that a lock sleeve is movably connected with a locking buckle, one end of the locking buckle is movably connected with a fastening wrench, the fastening wrench is movably connected with the lock sleeve, the locking buckle comprises a first end part and a second end part, the first end part is provided with a connecting hole, and the second end part is provided with a connecting hole; one end of the lock sleeve is movably connected with the connecting hole, a connecting groove is formed in the locking buckle, one end of the fastening wrench is arranged in the connecting groove and movably connected with one end of the lock sleeve, and when the fastening wrench rotates to abut against the lock sleeve, the second end portion clamps and tightens one end of the lock sleeve so that the inner diameter of the lock sleeve can be decreased. According to the alpenstock telescopic rod lock catch structure, locking and unlocking of the lock sleeve are adjusted through rotation of the locking buckle and the fastening spanner, and a user can operate the alpenstock telescopic rod lock catch structure more conveniently.

The invention discloses an electric motorcycle power supply connector with a power-assisted wrench, and relates to the field of electric motorcycle power supply connectors. According to the invention, the power-assisted wrench is additionally arranged on the line end connector, when the line end connector and the board end connector are plugged, the line end connector jack and the board end connector jack are aligned and pre-plugged, the sliding limiting columns on the two sides of the board end connector enter the sliding rail inlets of the power-assisted wrench, and then the tail end of the power-assisted wrench is pushed and pressed by hands, so that the line end connector and the board end connector are plugged. When the power-assisted wrench rotates, the board end connector is pulled towards the line end connector through the sliding guiding effect between the sliding rail and the sliding limiting column, so that the auxiliary plugging effect can be achieved, and the line end connector can be easily plugged into the board end connector. And the power-assisted wrench is pre-pressed on the wire end connector at the moment, and a notch at the tail end of the power-assisted wrench is just buckled on a fixed salient point at the tail end of the wire end connector, so that the power-assisted wrench can limit and lock the wire end connector and the board end connector.

This utility model discloses an automatic circuit board testing device, including a base and a support. The support has a crossbeam and a vertical support. The crossbeam is equipped with a vertical moving mechanism that drives a detection positioning plate to move up and down. The vertical support has a guide mechanism that slides with the detection positioning plate. The detection positioning plate has several circular holes for placing detection probes or detection seats. The circular holes are arranged in a matrix and have annular grooves inside. The annular bosses on the detection probes or detection seats are interference-fitted with the annular grooves for fixation. The vertical moving mechanism can adopt a wrench drive or a bushing structure. The guide mechanism includes a guide post that fits with a through hole or a groove that fits with a boss. The device also includes a transition plate and a transition hole on the base. This device achieves automated testing through mechanical structure design, improving efficiency and accuracy, and has the advantages of strong versatility and convenient maintenance.

The invention discloses a connector in the field of safe locking of connectors. The connector comprises a first shell, a wrench and a retainer, a main lock buckle is arranged on the first shell; the wrench is rotationally installed on the first shell, and the wrench is configured to be connected with the main lock buckle in a matched mode; the retaining part is movably installed on the first shell, the retaining part is provided with a first position for fixing the wrench and a second position for interfering with the wrench and fixing the main lock buckle, and the retaining part and the wrench move and interact to switch the first position and the second position; the first shell designed in the invention is provided with the retaining part which is movably mounted, when the retaining part moves, if misoperation (excessive movement) of the retaining part occurs, the retaining part restrains the stroke of the wrench, the main locking function cannot be realized, the two shells cannot be interlocked to a connecting position in practical application, an operator is reminded, and the safety of the wrench is ensured. Therefore, a series of serious potential safety hazards and system faults are avoided.

The invention relates to an impact tool and an impact wrench. In a corner impact tool, a working part can be properly illuminated by a lamp. This impact tool is provided with: a grip section extending in the front-rear direction; a motor housing part disposed in front of the grip part; a motor disposed inside the motor housing part; a main shaft disposed in front of the motor, extending in a direction intersecting the front-rear direction, and rotated by the motor; a hammer which is rotated by the main shaft; an anvil which is hit by the hammer in the rotational direction; a tip tool holding part disposed at the lower end of the anvil; a hammer housing that accommodates the main shaft and the hammer; and a light emitting body held in the hammer case.

The invention relates to the technical field of electric tools, in particular to an electric wrench which comprises an electric driving part, a rotating part, a limiting part and at least two clamping parts, and the electric driving part is in transmission connection with the rotating part; the rotating part and the limiting part are coaxially arranged and can rotate relatively, the rotating part and the limiting part are correspondingly provided with functional notches, the rotating center of the rotating part and the rotating center of the limiting part are located in the functional notches, the rotating part is provided with at least two guide grooves in the side portions of the functional notches, and the limiting part is provided with at least two sliding grooves in the side portions of the functional notches. The sliding groove extends towards the rotating center and penetrates through the functional notch. The clamping parts are installed in the sliding grooves in a sliding mode and comprise protruding shafts, the protruding shafts are installed in the guide grooves in a sliding mode, and when the rotating part rotates relative to the limiting part, the rotating part drives the clamping parts to move in the direction close to or away from each other; when the clamping parts move to the limiting position in the direction close to or away from each other, the rotating parts and the limiting parts rotate synchronously. The electric wrench can replace manpower, and efficient and stable tightening operation is achieved.

The invention discloses improved aviation equipment nut tightening equipment suitable for an inclined narrow path. The improved aviation equipment nut tightening equipment comprises a rack assembly posture adjusting assembly, a vertical movement posture adjusting assembly, a nut tightening and positioning control assembly, a horizontal movement posture adjusting assembly, a nut screwing execution assembly, a bent nut screwing wrench assembly and a nut storage and supply assembly. The shape of the tightening wrench and the motion form of the device are optimized, the posture adjusting capacity of the wrench in the horizontal direction is improved, the applicability and flexibility of the tightening device are improved, and the application requirement of the tightening device in an inclined narrow path cavity is met; the screw rod can obliquely move to directly reach a nut tightening working point through an inclined narrow path cavity; a positioning control function is added, so that the angle position of a tightening wrench can be accurately kept when oblique movement passes through an oblique narrow path, and the utilization rate of a movement space in a cavity of the oblique narrow path is maximized; the nut storage and supply structure is simplified, and the nut release stability and reliability are improved.

In a combine harvester, a hinged door provides access to an aperture in a wall of a walled compartment. A camera may be attached to the door, for monitoring the interior of the compartment. The door is configured to be locked and unlocked by an overcenter mechanism and requires an auxiliary tool for locking and unlocking the mechanism. The mechanism includes a pivotable rod pivotable about a first pivot axis relative to the door, and an overcenter arm that is pivotable at one end relative to a lever fixed to or integral with the rod. The other end of the overcenter arm is attachable to the wall including the aperture covered by the door. The overall dimensions of the mechanism are such that pivoting the rod to thereby lock or unlock the mechanism requires an auxiliary tool. A wrench or similar gripping tool may be used for pivoting the rod.

The utility model discloses a fastening piece tightening and detecting device, and belongs to the technical field of machining and quality control. The device comprises an electric wrench used for tightening the fastener; one end of the bracket is mounted on the electric wrench; the camera module is mounted at the other end of the support, and the camera module can at least monitor the mounting conditions of the foremost end of the electric wrench and the fastener through the support; when the support is a telescopic support, the device further comprises a telescopic distance sensor used for detecting the telescopic stroke of the telescopic support. And when the bracket is a non-telescopic bracket, the device further comprises a distance sensor which is used for monitoring the screwing length of the fastener. The device can be widely applied to industrial occasions where precise fastener installation is needed, the problem that the installation quality cannot be detected in real time in the fastening process is solved, the installation quality and safety are guaranteed, the fastening process is recorded, and the difficulty of afterward tracing and checking is greatly reduced.

The active clamping type fastener anti-disengaging electric wrench comprises an electric tool body and a wrench sleeve, an output shaft is arranged at one end of the electric tool body, the wrench sleeve is assembled on the output shaft, and the wrench sleeve comprises an outer cylinder body and a driving block arranged in the outer cylinder body in a sliding mode in the axial direction; a movable section allowing the driving block to move front and back and a limiting section for axially limiting the driving block are arranged in the outer barrel, a clamping assembly is embedded in the inner wall of the movable section, and when the driving block is pushed by an external fastener to move to the limiting section, the clamping assembly is pushed outwards to clamp the fastener. According to the active clamping type fastener anti-disengaging electric wrench, the technical problems that an existing electric wrench enables a fastener to slip easily, and the fastener can fall out of a sleeve due to the fact that the fastener cannot be actively clamped are solved.

The invention relates to an assembly type grouted bearing wall modular connecting structure and a rapid assembling method, and relates to the technical field of grouted bearing wall construction.The assembly type grouted bearing wall modular connecting structure comprises a connecting mechanism, the connecting mechanism comprises strip-shaped connecting plates arranged at the ends of two adjacent grouted bearing wall bodies, and three inserting blocks are fixedly arranged at the ends of the grouted bearing wall bodies at equal intervals; and three inserting grooves matched with the three inserting blocks are formed in the surfaces of the two sides of the strip-shaped connecting plate. By arranging the connecting mechanism, when two adjacent grouted bearing wall bodies are connected, the ends of the two grouted bearing wall bodies can be inserted into inserting grooves in strip-shaped connecting plates through inserting blocks, then a rotating disc is rotated through an external hexagonal wrench, and the two grouted bearing wall bodies are connected through the inserting blocks; and a positioning inserting plate is driven to move downwards and be inserted into a positioning inserting groove in an inserting block in an inserting groove, effective fixing between the inserting block and the inserting groove is achieved, and the modular connection efficiency of the grouted bearing wall body is effectively improved.

A lightweight fastener assembly with reduced weight and method is provided. The fastener assembly has a fastener body with a cap retention feature adjacent a first end and a threaded portion extending from a second end. A load bearing surface is configured to mate with a fastener seat on a wheel. A flange is formed adjacent a load bearing surface and having a diameter larger than the cap retention feature. A wrenching feature is formed between the cap retention feature and the second end and is configured to be engaged by a standard tool. A cap is secured to the cap retention feature on the fastener body and has upright contoured walls extending to a cap top. The cap is hollow in a capped region defined by the contoured walls and cap top beyond the first end of the fastener body.

The invention provides a power connector with a power-assisted unlocking mechanism, and relates to the technical field of power connectors. When a wire end connector and a seat end connector are connected in an inserted manner, a wire end connecting lock catch and a seat end connecting lock catch can be automatically clamped and locked, so that the wire end connector and the seat end connector are locked and limited; the locking process is convenient and labor-saving, and plugging and locking of the power supply connector in a narrow space of a vehicle are facilitated. When the wire end connector needs to be pulled out, the wrench is upwards pushed and rotated through fingers, the wrench can upwards push and lift the clamping end of the wire end connecting lock catch during rotation so as to release locking between the wire end connecting lock catch and the seat end connecting lock catch, then the wrench is pulled through the fingers, pulling force can be provided for the wire end connector through the wrench, and the wire end connector can be pulled out through the seat end connecting lock catch. The wire end connector is separated from the seat end connector, so that unlocking of the power connector and pulling out of the wire end connector are more convenient and labor-saving, and unlocking and pulling out of the power connector in a narrow space of a vehicle are facilitated.