5258 results about "Rocker arm" patented technology

A vehicle rocker assembly may include a sill inner comprising a sill wall portion, an upper wall portion, a lower wall portion, an upper flange portion, and a lower flange portion. The vehicle rocker assembly may also include a sill outer comprising a sill wall portion, an upper wall portion, a lower wall portion, an upper flange portion, and a lower flange portion. The vehicle rocker assembly also includes a rocker insert disposed within the elongated hollow interior, the rocker insert comprising: an upper wall, a lower wall, and a side wall extending between the upper wall and the lower wall. At least one of the upper wall or the lower wall comprises a corrugated portion that has a ridge oriented to extend in a lateral vehicle direction.

The present disclosure provides a method and system for monitoring a coal shearer status based on digital twinning, and an electronic device, and relates to the technical field of real-time status monitoring. The method includes: obtaining physical parameters, real-time driving data, and real-time status data of a coal shearer physical entity, where the physical parameters include geometric parameters, material properties, and positional parameters; the real-time driving data includes a real-time position, a real-time speed, and a real-time angle of a rocker arm; and the real-time status data includes real-time vibration information; building a coal shearer digital twin model on a Unity3D engine according to the physical parameters of the coal shearer physical entity; and updating a status of the coal shearer digital twin model based on the real-time driving data and the real-time status data. The present disclosure achieves visual monitoring of a coal shearer status.

The invention discloses an efficient thin seam coaling roller for a coal mining machine and a using method, and relates to the field of coal mining equipment. A thin seam efficient coaling roller for a coal mining machine comprises a coal mining spiral roller which is fixedly installed at the power output end of a driving rocker arm of the coal mining machine through a fixing bolt; the mounting cover is fixedly mounted at the position, close to the coal mining spiral drum, of the coal mining machine driving rocker arm; while the coal mining spiral drum rotates to mine coal, water spraying at the rocker arm of the coal mining machine, water spraying at the cutting tooth seat and mist curtains sprayed by the wide-angle fan-shaped atomizing nozzles work cooperatively, the dust falling effect is enhanced, a water mist cover is rapidly formed under the assistance of the mounting cover, and the water mist cover can effectively isolate coal dust inside, so that the dust falling effect is improved. And the coal dust diffusion is greatly reduced, the body health of miners is guaranteed, the occupational health risk is reduced, the abrasion of the coal dust to equipment is reduced, the service life of the equipment is prolonged, the maintenance frequency and cost of the equipment are reduced, and the comprehensive benefits of coal mining operation are improved.

The invention discloses a welding fixture for machining a turbine shell, which belongs to the technical field of turbocharger machining and comprises a turntable and adjustable welding clamping mechanisms uniformly distributed in the circumferential direction of the turntable, the adjustable welding clamping mechanism comprises a fixed rack, a movable machine base, an inner supporting type clamping assembly for clamping the turbine shell, an adjustable limiting assembly for positioning the end face of an air inlet of the turbine shell and an adjustable shifting assembly for pushing the turbine shell to rotate. According to the welding clamp for machining the turbine shell, automatic and rapid positioning of the turbine shell can be achieved so that a rocker arm can be welded conveniently, and the welding clamp can adapt to turbine shells of different models.

The utility model relates to a variable-configuration tilting quad-rotor unmanned aerial vehicle which comprises rotors (1), motors (2), main wings (3), a fuselage (4), a vertical fin (7), a power supply unit (8), a control unit (9), tilting steering engines (10), driving rocker arms (11), tilting connecting rods (13), tilting rod supports (16), front tilting rods (17), rear tilting rods, front driven rocker arms (18) and rear driven rocker arms. The tilting mechanism is simple in configuration form, the appearance of the whole tilting mechanism is not greatly changed in the tilting process, and the pneumatic influence in the tilting process is relatively small. When the rotors tilt forwards, a conventional rotor fixed wing aircraft mode is adopted, when the rotors tilt upwards, a conventional four-rotor unmanned aerial vehicle mode is adopted, and various modes and modes such as vertical take-off and landing, hovering and forward flying can be achieved.

The invention discloses a driving module of a reciprocating type shaver. The driving module comprises a base, a driving assembly and a driving assembly, the two ends of the deflection frame are fixed to the base through elastic pieces to form a frame structure. The output shaft is mounted above the deflection frame; the horizontal motor is arranged on the base; the cam is arranged on a motor power shaft, and grooves with parallel normal sections and equal width are formed in the surface of the cam; the lower end of the rocker arm is hinged to the base, a middle rocker arm shaft is assembled in the groove, and the upper end is in linkage with the deflection frame. Rotary motion is converted into high-frequency linear swing through precise cooperation of the cam and the rocker arm, the transmission efficiency is high, and noise is low; the integrated modular structure of the base and the motor enables the cam and the rocker arm to be matched more accurately and reliably; the double-output shaft symmetrically and reversely swings to realize dynamic balance vibration reduction; the compact horizontal layout saves space; the product has the economical efficiency of a common motor and the performance advantages of a linear motor, the comfort and reliability of a shaver product are improved, and meanwhile the cost is reduced.

The invention relates to a fan module of a turbine engine with a variable pitch mechanism, the turbine engine and a pitch adjusting method. The fan module comprises fan blades and a propeller pitch adjusting rocker arm. The fan blades are installed on the fan installation hub through a bearing, and the fan blades are connected with the propeller pitch adjusting rocker arm at the same time; the hydraulic actuating device comprises a piston and an actuating cylinder body, the piston can reciprocate in the actuating cylinder body, and the propeller pitch adjusting rocker arm is matched with the piston of the hydraulic actuating device; the fan installation hub is fixedly connected with the fan input shaft, and the actuator cylinder body is fixed to the fan input shaft; the safety locking mechanism is matched with the piston; the fan module has a first state, a second state and a third state.

The embodiment of the invention discloses an automobile power-assisted steering test system and method, and relates to the technical field of automobile electronics. An EPS controller in the automobile power-assisted steering test system is used for acquiring an input torque generated by a driver simulation motor through an angle torque sensor; according to the input torque and the state information of the vehicle, the power-assisted torque needing to be output by the EPS motor in the steering process is determined; the power-assisted torque is sent to an EPS motor, so that the EPS motor assists the vehicle in steering; if the input torque, the power-assisted torque and the actual resistance torque of the rocker arm end are balanced in the steering process of the vehicle, and the amplitude and the variation trend of the power-assisted torque all accord with the preset power-assisted characteristic curve, the vehicle power-assisted steering test passes. Therefore, by introducing a driver steering wheel input part and a steering resistance simulation part, the automobile power-assisted steering test system can simulate the working principle of a steering system more truly, so that the test precision and effect are improved.

The invention relates to a cleaning structure of a radial drilling machine, and belongs to the technical field of cleaning devices of radial drilling machines. The device comprises a cleaning assembly and a collecting assembly, the cleaning assembly comprises a top pushing part, and the top pushing part is used for being installed on the top of a workbench in a left-right sliding mode; the collecting assembly comprises a collecting box with an open top end; the cleaning assembly further comprises a side pushing piece, the side pushing piece is fixedly connected with the top pushing piece, and the side pushing piece is used for being installed on the front side of the workbench in a left-right sliding mode. The collecting box is used for being installed in an inner cavity of the workbench in a left-right sliding mode, and a feeding hole is formed in the front side wall of the collecting box. The collecting assembly further comprises a guiding piece, the guiding piece is used for being installed on the right side wall of the workbench and located in front of the collecting box, the guiding piece is provided with a guiding face, and the guiding face inclines downwards from front to back. The top and the side portion of the workbench can be cleaned at the same time, cuttings falling from the side portion can be collected, and the cuttings cleaning and collecting effect is better.

According to the electric direct-driven eVTOL rotor control device, a driving motor is an outer rotor motor, a stator of the driving motor is of a hollow structure, and a steering engine assembly is installed on the lower portion of the stator, upwards penetrates through the stator and is in driving connection with a variable-pitch mechanism assembly, so that the deflection angle of blades of a blade handle assembly is adjustable; the intermediate transmission link is reduced, the energy loss is reduced, the transmission efficiency is improved, and the reliability of the system is improved; the rotor mounting seat cylinder is upwards connected with the propeller hub lower cover and downwards connected with the stator mounting seat through a bearing, so that stable and reliable power transmission between the driving motor rotor and the propeller hub assembly is ensured, and vibration and noise are reduced; the anti-rotation rocker arm is arranged between the lead screw nut and the fixed ring sleeve, so that rotation interference is avoided, and the precision and stability of variable pitch control are improved; and the variable-pitch rocker arm is in running fit with the variable-pitch disc, so that the linear motion of the variable-pitch disc can be accurately converted into the deflection motion of the blades, and the accurate adjustment of the pitch angle of the blades is realized.

The invention discloses a mahjong machine and a horizontally-pushing tile feeding device and a tile supporting plate transmission mechanism thereof, the mahjong machine comprises a tile feeding seat, a tile supporting plate, two tile feeding curve cams, two tile feeding rocker arms, two tile feeding rocker arm shafts, two tile feeding rocker arm cams and two first gears, the tile feeding rocker arm cams are fixedly connected with the tile feeding rocker arm shafts, cam grooves are formed in the tile feeding rocker arm cams, and the tile supporting plate transmission mechanism is arranged on the tile feeding seat. The first gear is rotatably mounted on the mahjong feeding seat and is in matched transmission with the mahjong feeding rocker arm cam through a crank; and the two first gears are driven by a horizontal pushing mahjong tile feeding motor to rotate synchronously. According to the scheme, the gear transmission mechanism is adopted, the cam is installed on the mahjong tile feeding rocker arm shaft and is in matched transmission with the mahjong tile feeding rocker arm shaft through the crank gear, transmission torque is large, stability and synchronism are better, the torque transmission capacity and bearing capacity of the mechanism are improved, the supporting strength of the mahjong tile supporting plate is improved, the transmission structure is more reasonable, and lifting of the mahjong tile supporting plate is smoother and more reliable; installation and debugging are more convenient, and maintenance, disassembly and assembly are more convenient.

The invention discloses a mahjong machine and a horizontally-pushing mahjong tile feeding device thereof, a mahjong tile supporting plate transmission mechanism for driving a mahjong tile supporting plate to lift comprises two mahjong tile feeding curve cams, two mahjong tile feeding rocker arms, two mahjong tile feeding rocker arm shafts, two mahjong tile feeding rotating gears and two first gears, and the first gears are incomplete gears; a toothed part and a toothless part are arranged on the first gear, and the first gear is in matched transmission with the mahjong tile feeding rotating gear: when the toothed part on the first gear is in meshed transmission with the mahjong tile feeding rotating gear, the first gear drives the mahjong tile feeding rotating gear to rotate; when the toothless part on the first gear is matched with the mahjong tile feeding rotating gear, the mahjong tile feeding rotating gear does not rotate; and the two first gears are driven by a horizontal pushing mahjong tile feeding motor to rotate synchronously. According to the scheme, all-gear transmission is adopted for the tile supporting plate transmission mechanism, the torque transmission capacity and the load bearing capacity are enhanced, the stability and reliability of lifting motion of the tile supporting plate are improved, the transmission structure is more reasonable, and maintenance and installation are more convenient.

The invention relates to an empennage structure of a flapping-wing robot, which comprises a yawing mechanism, a pitching mechanism and a connecting mechanism, the yawing mechanism comprises a yawing steering engine, a yawing steering engine rocker arm, a yawing rocker arm and a yawing control surface; the pitching mechanism comprises a pitching steering engine, a pitching steering engine rocker arm and a pitching surface; the connecting mechanism comprises a pitching steering engine fixing plate, an empennage surface plate and a fuselage. The pitching motion function of the empennage is achieved through the knuckle bearing and the connecting rod structure, the yawing motion function of the empennage is achieved through the flexible material, the steering engine rocker arm and the yawing rocker arm, the yawing structure and the pitching structure are combined through the empennage plane plate, and the whole empennage mechanism is formed. The yawing motion cannot be affected during pitching motion, decoupling of the pitching motion and the yawing motion is achieved, meanwhile, the yawing control steering engine and the pitching control steering engine are both installed on the fuselage, empennage structural parts are reduced, the loading capacity during empennage motion is reduced, and the beneficial effects of being compact in structure and high in adjusting capacity are achieved.

The utility model discloses a vehicle electric unlocking lock which comprises a shell body, the shell body is provided with a driving mechanism, a rocker arm assembly, a pawl assembly and a ratchet wheel assembly, the ratchet wheel assembly is used for moving and switching between a locking position and an unlocking position relative to a plunger latch, and a retaining structure is arranged between the pawl assembly and the ratchet wheel assembly. The pawl assembly is used for moving and switching between a keeping position and a releasing position relative to the ratchet assembly, and when the ratchet assembly moves to the locking position, the driving mechanism drives the pawl assembly to move to the keeping position, and the ratchet assembly is kept at the locking position through the keeping structure; the rocker arm assembly comprises an electric opening rocker arm and an inner opening rocker arm, and the rotating center shaft of the electric opening rocker arm and the rotating center shaft of the inner opening rocker arm are perpendicular to the rotating center shaft of the pawl assembly. The driving mechanism drives the electric opening rocker arm to rotate and drives the inner opening rocker arm to reversely rotate relative to the electric opening rocker arm, and the pawl assembly is driven to be away from the ratchet wheel assembly and moves to the release position from the holding position. The electric unlocking device has the effects of compact structure, safety and reliability in use and electric unlocking.

The invention provides an intake valve late closing device, an intake valve assembly and an engine, and belongs to the technical field of engines, and the intake valve late closing device comprises a cam shaft, a rocker arm shaft, an intake rocker arm, a main roller, a control unit, a movable unit, a contact part and a return spring. The device has the beneficial effects that an air inlet valve late-closing rocker arm in the prior art is omitted, the movable unit is movably connected with the air inlet rocker arm, when the electromagnetic valve is closed, the air inlet cam makes contact with the main roller, and the air inlet valve late-closing roller makes contact with the air inlet late-closing cam but only compresses the return spring; when the electromagnetic valve is opened, engine oil pressure pushes the movable block to move to the position away from the air inlet rocker arm, the air inlet late-closing cam and the air inlet valve late-closing roller are still in contact but do not compress the return spring any more, the air inlet cam and the main roller are separated, a pause gap is formed, and therefore the air inlet late-closing cam does not work any more.

The invention belongs to the technical field of weapon systems, and particularly relates to a small ammunition air-drop mechanism which comprises a bottom plate, an embracing ring seat, an embracing ring, a rotating shaft, a plug pin, a plug pin support, a connecting rod, a steering engine, a rocker arm and an adaptive block. In an air-drop state, ammunition is clamped and fixed by the embracing ring. The air-drop mechanism serves as an ammunition air-drop system and is fixed to the flying platform through the bottom plate, the steering engine rotates and drives the connecting rod to move after receiving a control signal, then movable limiting of the embracing ring is relieved, and ammunition freely falls under the action of gravity. In this way, the ammunition air-drop process is completed. The airdrop mechanism has the outstanding advantages that the problems that a conventional airdrop mechanism is large in weight, inconvenient to operate and the like are solved, the airdrop mechanism has the advantages of being high in strength, compact in structure, small in size, light in weight, easy and convenient to operate and the like, quick response can be achieved after a control signal is received, embracing ring release activity synchronism and reliability are high, and the airdrop mechanism can adapt to different flight platforms such as unmanned / manned aerial vehicles and rotor / fixed-wing aircrafts and is suitable for large-scale popularization. And the method has a great popularization and application space.

The invention relates to a CL imaging system based on multi-axis motion control, the CL imaging system comprises a platform, a side table, a large hollow rotary table, supporting legs and a control system, the platform is provided with an X translation table, the X translation table is located below the large hollow rotary table, the X translation table is slidably connected with a Z lifting table, the Z lifting table is slidably connected with a ray source support, and the ray source support is provided with a ray source; a hollow double-drive XY translation table is arranged above the large hollow rotary table, and the hollow part of the hollow double-drive XY translation table and the hollow part of the large hollow rotary table are overlapped; the side table is arranged close to the side edge of the platform, the side table is perpendicular to the platform and provided with a rocker arm driving rotary table, the rocker arm driving rotary table is connected with a rocker arm translation table, the rocker arm translation table is slidably connected with a detector support, and a detector is fixedly arranged on the detector support. According to the invention, the relative position of the radiation source and the detector is adjusted through the high-precision multi-axis motion control mechanism according to the characteristics of large thickness and large size of a PCB, and full-angle and local flexible CL data acquisition is realized.

The invention provides a front wheel steering mechanism for a miniature ship-borne fixed-wing unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicle rotation mechanisms, the front wheel steering mechanism comprises a front wheel assembly, a front starting mounting frame assembly is mounted above the front wheel assembly, a front starting steering engine assembly is mounted on the side wall of the front starting mounting frame assembly, and the front wheel assembly comprises a damping column body; a shock absorption column is fixedly installed on an output shaft of the shock absorption column body, the lower end of the shock absorption column body is fixedly connected with a front supporting frame, and a front lifting tire is installed below the front supporting frame, so that output of a front lifting steering engine is more efficient, and front wheel steering is correspondingly faster. The rotation output of the front steering engine drives the front wheel to rotate through the front rocker arm, the two ball head connecting rods and the steering engine rocker arm, accurate control over front wheel steering during autonomous take-off and landing of the unmanned aerial vehicle is guaranteed, meanwhile, it is guaranteed that front wheel steering can be manually and remotely controlled, and compared with a single-connecting-rod front wheel steering mechanism, the front wheel steering mechanism is simple in structure, high in precision, high in torsion resistance and high in efficiency, and can be widely applied to the field of unmanned aerial vehicles. The maintenance is convenient.

The utility model provides a battery pack unlocking mechanism and battery replacement equipment, and relates to the technical field of battery replacement. The middle part of the unlocking swing rod is rotationally connected with the bottom plate; the unlocking driving assembly comprises a first telescopic assembly and a second telescopic assembly, the first telescopic assembly abuts against the unlocking swing rod, and the second telescopic assembly is rotationally connected with the bottom of the unlocking swing rod; the first telescopic assembly is used for pushing the unlocking swing rod to rotate to the avoiding position for avoiding the lock rod, and the second telescopic assembly is used for pulling the unlocking swing rod to rotate towards the jacking position for jacking the lock rod. Compared with the prior art, the unlocking mechanism has the advantages that the structural complexity of the unlocking swing rod is optimized, the unlocking state and the stored battery avoiding state are switched back and forth through the first telescopic assembly and the second telescopic assembly, the unlocking mechanism completes the unlocking action or the avoiding action on the battery replacing equipment, manual unlocking is not needed in the unlocking process, and the unlocking efficiency is improved. And unlocking is fast and convenient.

The invention discloses a multi-source cooperative rocker arm-tracked robot composite mechanical structure for earthquake search and rescue, and belongs to the technical field of intelligent rescue equipment. A rocker arm-crawler belt-wheel three-dimensional motion structure system is innovatively designed, a multi-degree-of-freedom rocker arm structure driven by a steering engine is adopted in the middle of the robot, and a double-crawler belt differential driving module driven by a motor is arranged at the bottom of the robot; a swing arm balance wheel set is arranged on the front portion to assist climbing operation. According to the composite structure, a posture stability control algorithm is established through a mass center dynamic model, and intelligent switching of three motion modes of wheel type high-speed maneuvering, crawler belt obstacle crossing and rocker arm climbing can be achieved. Tests show that the structure can enable the robot to stably cross a 100 mm vertical obstacle, good posture stability is kept in unstructured terrains such as gravel and rubble, and meanwhile the environment is sensed through various sensors. Compared with a traditional single motion structure, the multi-dimensional maneuvering ability in the complex post-disaster environment is achieved through mechanical structure innovation, and the terrain adaptability of rescue equipment is effectively improved.

The invention relates to the technical field of intelligent unmanned ships, in particular to a wave self-adaptive unmanned ship, a self-adaptive control system and a control method.The wave self-adaptive unmanned ship comprises a main ship body, a front arch, a rear arch, a suspension system, a propelling nacelle, a rigid sliding plate and a buoy, the main ship body is connected with the rear arch and the front arch, and the rigid sliding plate is fixed to the buoy; the propulsion nacelle is installed at the tail of the rigid sliding plate, the rear arch and the rigid sliding plate are installed through two bearings perpendicular to each other, the suspension system comprises a rocker arm, a plate spring and a TPMLM actuator, the rocker arm is connected to the rigid sliding plate, the plate spring and the TPMLM actuator are connected between the rocker arm and the rigid sliding plate and support the rocker arm to be in an upward inclined posture, and the rear arch is connected to the rigid sliding plate. The front arch is connected with the rocker arm, the plate spring and the TPMLM actuator are installed in parallel in the vertical direction, the TPMLM actuator is used for outputting active control force for restraining movement of the ship body, and the unmanned ship, the self-adaptive control system and the self-adaptive control method have the advantages that wave loads can be actively counteracted, and therefore movement restraining is achieved.

The invention provides an adjustable truss type multi-supporting-column undercarriage, and belongs to the field of aircraft undercarriage.The adjustable truss type multi-supporting-column undercarriage comprises undercarriage supporting columns, lower rocker arms, rotating shafts, side supporting rods, supports, buffers, upper rocker arms and front supporting rods, the undercarriage supporting columns and the lower rocker arms are in pivot joint through the rotating shafts, machine wheels are installed on the lower rocker arms, and the side supporting rods are arranged on the lower rocker arms; the side supporting rod is of a length-adjustable structure, one end of the side supporting rod is hinged to the rotating shaft, the other end of the side supporting rod is connected to the aircraft body structure, the support is installed on the rotating shaft pivoted to the undercarriage supporting column and the lower rocker arm and used for supporting the undercarriage supporting column of the rear undercarriage, one end of the buffer is hinged to the lower rocker arm, and the other end of the buffer is hinged to the upper rocker arm. The upper rocker arm is pivoted to the undercarriage supporting column, the buffer is driven to move by driving the upper rocker arm, then the lower rocker arm can rotate relative to the rotating shaft, and folding and unfolding of the undercarriage are achieved.

The invention discloses a rocker arm assembly and an engine valve mechanism, and relates to the technical field of engines. The rocker arm assembly comprises a rocker arm, a first elastic piece, a sealing piece, an ejection unit, a piston and a transmission unit. A first cavity, a second cavity and a third cavity which are sequentially communicated are formed in the rocker arm, the ejection unit is installed in the first cavity, the first elastic piece and the sealing piece are both installed in the second cavity, the first elastic piece is connected with the sealing piece, the sealing piece is used for separating the first cavity from the second cavity, and a first oil channel is formed in the rocker arm. The first oil duct is communicated with the first cavity, the piston is installed in the third cavity and connected with the transmission unit, and the transmission unit is used for being matched with the delay cam. The rocker arm assembly is simple in structure, the number of parts is small, the occupied space is small, the production cost and the assembly cost can be effectively reduced, and economic benefits are improved.

The utility model relates to the technical field of engine braking, in particular to a reset type rocker arm braking device and a vehicle. The reset type rocker arm braking device comprises a rocker arm, and the second end of the rocker arm is provided with an exhaust cavity, a braking cavity, a one-way valve cavity and a reset cavity; the rocker arm shaft is provided with a first shaft oil duct and a second shaft oil duct. The rocker arm is provided with a first communicating oil duct, a second communicating oil duct, a third communicating oil duct, a fourth communicating oil duct and a fifth communicating oil duct. A blocking piece is arranged in the exhaust cavity, and a communicating channel is arranged on the blocking piece to divide the exhaust cavity into a first sub-cavity and a second sub-cavity which are communicated with each other; the first communicating oil duct is communicated between the first shaft oil duct and the one-way valve cavity, the second communicating oil duct is communicated between the second shaft oil duct and the reset cavity, the third communicating oil duct is communicated between the reset cavity and the second sub-cavity, the fourth communicating oil duct is communicated between the first sub-cavity and the brake cavity, and the fifth communicating oil duct is communicated between the one-way valve cavity and the brake cavity.

The invention relates to sea and air three-dimensional unmanned rescue equipment which comprises a large-load unmanned aerial vehicle platform, a sea life rescue platform, a suspension assembly and a flexible buoyancy platform which are connected in sequence. The heavy-load unmanned aerial vehicle platform is fixed to the upper portion of the offshore life rescue platform in a rigid connection mode. The suspension assembly comprises a main ship body and a multi-body buffer structure connected with the main ship body and the flexible buoyancy platform. The multi-body buffering structure comprises a front arch, a first rear arch, a second rear arch, a first rigid sliding plate, a second rigid sliding plate, a first rocker arm type spring damping vibration attenuation module and a second rocker arm type spring damping vibration attenuation module. The first rigid sliding plate and the second rigid sliding plate are connected with the flexible buoyancy platform. Compared with the prior art, cooperation of safe take-off and landing from a mother ship, hovering search, high sea condition stable operation and flexible rescue is achieved through the four-module integrated design; rescue equipment can be quickly replaced, diversified rescue requirements are met, operation is flexible, and taking-off and landing are safe and convenient.

An off-road vehicle includes a frame; front and rear wheels; a front suspension assembly; a front torsion bar assembly, a rear suspension assembly and a rear torsion bar assembly. The front suspension assembly comprises a front lower rocker arm, a front upper rocker arm, and a front wheel shaft support assembly mounted between the front lower and the front upper rocker arms. The front torsion bar assembly is located above the front upper rocker arm, and is movably connected to the front upper rocker arm. The rear suspension assembly comprises a rear lower rocker arm, a rear upper rocker arm, a control arm assembly, and a rear wheel shaft support assembly mounted between the rear lower and rear upper rocker arms. The rear torsion bar assembly is located between the rear upper and lower rocker arms, and is movably connected to the rear upper rocker arm.

The invention discloses an underwater model resistance measuring device for a towing tank. The underwater model resistance measuring device comprises a central measuring bridge, a measuring bridge connecting seat is arranged above the central measuring bridge, a frame is arranged below the measuring bridge connecting seat, two rocker arms are arranged between the frame and the measuring bridge connecting seat, rapiers are arranged at the two ends of the frame, the frame is hinged to a sensor, and the sensor is arranged below the measuring bridge connecting seat; according to the underwater model resistance measuring device, the measuring bridge connecting seat, the rocker arm, the rotating joint bearing and the frame are adopted to form a parallelogram dragging mechanism, so that the frame is always horizontal; the two rapiers are matched to fix the underwater model, so that the underwater model only has one longitudinal freedom of motion, and the attitude stability of the underwater model during navigation is ensured; and the sensor is fixed on the measuring bridge connecting seat through the sensor lifting seat and the sliding table, and the sensor is directly and horizontally connected with the frame through the connecting rod, so that the sensor only bears tensile force in the experiment process, and the safety and the use precision of the sensor are ensured.

The invention discloses a device and a method for hanging or taking a ground wire of a high-voltage wire by an unmanned aerial vehicle, and belongs to the technical field of equipment maintenance in the power industry, and the device comprises the unmanned aerial vehicle, wire hanging equipment, tower hanging equipment, a soft copper wire and a hanging buckle fixing support. The unmanned aerial vehicle is movably connected with the line hanging equipment; the line hanging equipment is movably connected with the back of the tower hanging equipment; when a wire is hung on the wire hanging equipment, the rotary self-locking mechanism seals the opening along with extrusion of the wire to form self-locking; after the unmanned aerial vehicle is separated from the hanging frame, the clamping tongue on the plate frame rotates to clamp the wire; when the tower hanging equipment is clamped on the hanging buckle fixing support, the rocker arm extrudes the arc-shaped semi-hanger to complete self-locking, and when the force arm rod swings to a preset angle, the arc-shaped semi-hanger is driven to rotate, and the rocker arm is unlocked. Through the specific mechanical structure design, the unmanned aerial vehicle can stably mount the grounding wire device in the flight process, the situation that the grounding wire device inclines due to shaking of the unmanned aerial vehicle is avoided, and the efficiency and safety of wire hanging grounding operation are improved.

The invention is suitable for the field of bearing ring machining equipment, and provides bearing ring grinding equipment which comprises a bottom plate and a mounting frame and further comprises a bearing cylinder, an abutting fixing assembly is mounted on the bearing cylinder, and a control assembly is further mounted on the mounting frame; the outer side of the driving shaft is sleeved with a stabilizing cylinder a, a rocker arm is installed on the stabilizing cylinder a, a grinding shaft is installed at one end of the rocker arm, a gear c connected with a gear b on the grinding shaft in a meshed mode is fixed to the driving shaft, a grinding wheel is further fixed to the grinding shaft, and a distance adjusting assembly is further installed between the mounting frame and the rocker arm. A gear d in meshed connection with the gear a on the driving shaft is fixed on the bearing cylinder; a driving assembly used for driving the driving shaft to rotate is further mounted on the mounting frame; the device further comprises an auxiliary clamping and transferring assembly. By integrating the functions of auxiliary clamping and transferring, automatic centering and fixing, synchronous rotating and grinding and speed adjusting, efficient, stable and continuous grinding machining of the to-be-machined ferrule is achieved.