523 results about "Balancing machine" patented technology

A vehicle component balancing robot apparatus, system and method for on vehicle balancing of one or more of a tire, a wheel, bearings, brake components, and vehicle components that impart vibrations to the vehicle. The apparatus includes a frame arranged so as to connect with the vehicle. A robot of the apparatus moves relative to the frame, and is configured so that the move, relative to the frame, resolves a predetermined location of a tire-wheel assembly relative to a reference frame of the robot. The robot has at least one end effector arranged to interface the tire-wheel assembly and the robot moves the at least one end effector to other predetermined locations on a wheel rim of the tire-wheel assembly, determined based on resolution of the predetermined location of the tire-wheel assembly relative to the reference frame.

The invention relates to the technical field of mechanical engineering, in particular to a reciprocating type vertical lifting device.Two stand columns are fixedly connected to the top of a rail car, ejector rods are fixedly connected to the tops of the stand columns, a dynamic lifting mechanism is fixedly connected to the side faces of the stand columns, and a fixed side plate is arranged in the middle of the dynamic lifting mechanism; winding drums are arranged on the side faces of the two sides of the fixing side plate, a bearing mechanism is arranged in the middles of the two stand columns, a bearing table is arranged in the middle of the bearing mechanism, a balance mechanism is arranged at the bottom of the bearing mechanism, a balance base is arranged in the middle of the balance mechanism, and a balancing weight fixing base is arranged at the bottom of the balance base; a deceleration block is arranged on the side face of the balance mechanism, capsizing moment generated by goods deviation and position is counteracted, the deviation problem of the bearing mechanism is solved, friction between the bearing mechanism and the stand column guide rail is reduced, the stress of the root of the stand column is reduced, and the maintenance period is prolonged.

The invention relates to the technical field of multi-stage horizontal centrifugal pumps, and discloses a multi-stage horizontal centrifugal pump which comprises a driving motor, an output end of the driving motor is fixedly connected with one end of a pump shaft, the other end of the pump shaft is fixedly connected with a multi-stage centrifugal pump component, a positioning mechanism is further arranged on the pump shaft, and the positioning mechanism is rotationally connected with the pump shaft; the balance mechanism comprises a driven part and a hydraulic part, the driven part is located between the positioning mechanism and the driving motor, one end of the driven part is connected with the pump shaft in a matched mode, and the other end of the driven part is fixedly connected with the hydraulic part; the feedback mechanism comprises a thrust component, an amplifying component and a sealing component, the thrust component is located between the positioning mechanism and the multistage centrifugal pump component, the thrust component is connected with the amplifying component in a matched mode through the sealing component, the amplifying component is rotationally connected with the hydraulic component, and the thrust component communicates with the hydraulic component through a pipeline. According to the invention, the adaptability under various working conditions is improved, and the pump shaft movement phenomenon is reduced.

The invention provides a dynamic balance detection machine for flywheel production, and belongs to the technical field of flywheel balance detection. Comprising a balancing machine body, a data displayer and a drilling machine are fixedly connected to the two sides of the top of the balancing machine body respectively, a driving device is arranged in the balancing machine body, the balancing machine is characterized in that the output end of the driving device is fixedly connected with a rotating disc, and the top of the rotating disc is fixedly connected with a clamp chassis; and the transfer structure is located at the top of the clamp chassis, the transfer structure is connected with the clamp chassis, and the transfer structure and an output shaft of the driving device are located on the same straight line. By arranging the supporting extrusion structure, manual pressure of the flywheel and a worker is used as a power source, and the manual pressure is converted into clamping force in the horizontal direction through the supporting extrusion structure, so that the inner wall of the flywheel is extruded and fixed, and the mechanical principle is met; and for a non-automatic balancing machine, the fixing time and the dismounting time of the flywheel can be greatly shortened.

The invention discloses a wheel-legged robot for teenager education and a control system thereof.The wheel-legged robot comprises a vehicle-mounted frame and a driving assembly arranged on the outer wall of the vehicle-mounted frame, and the driving assembly comprises a joint motor, a driving arm, a torsion frame, a torsion spring, a first lifting rod, a second lifting rod, a driving wheel, a limiting shaft, a driving motor and a control assembly; the joint motors are fixedly arranged on the two sides of the outer wall of the vehicle-mounted frame. A four-connecting-rod and torsion spring balance mechanism is used as a core, smooth wheel-leg switching, easy obstacle crossing, LQR and reinforcement learning fusion, online self-adaption, more stable and more power-saving movement and voice, vision and gesture multi-mode interaction facing teenagers are achieved, complex tasks can be completed by speaking sentences and moving hands, a low-cost motor is developed by itself, a full-open-source design is adopted, and the robot is more convenient to use. Students can disassemble, assemble, expand and re-create, mechanical, electronic and programming knowledge is communicated in practical practice, and the education of department and creations is really extended from class to family and future.

The invention relates to the technical field of steel wire winding, in particular to a constant tension control winding device and application of the constant tension control winding device in steel wire rough drawing, and the constant tension control winding device comprises a support, a lifting plate and a fixing plate, the wire arranging assembly is arranged on the lifting plate, and the wire arranging assembly is connected with a wire guiding ring used for guiding winding of a steel wire; the tension balancing mechanism is arranged on the fixing plate and connected with the wire arranging assembly, the tension balancing mechanism comprises a supporting roller, and the tension balancing mechanism can drive the supporting roller to move in the vertical direction when the wire arranging assembly moves; the winding assembly is arranged on the lifting plate, the winding assembly comprises winding rollers which are symmetrically arranged, a follow-up limiting mechanism is further arranged on the lifting plate, and by means of a tension balancing mechanism, the height of the supporting rollers can be adjusted when the wire arranging assembly guides the steel wires to be arranged in order, so that it is guaranteed that the steel wires are not prone to falling off when being wound; and the steel wire is kept in a certain tensioning range.

The invention discloses a dynamic balance detection and processing device for a cast iron flywheel, and relates to the technical field of flywheel detection, and the device comprises a dynamic balancing machine which automatically detects the unbalance amount of a flywheel assembly; the machining mechanism is arranged above the detection table and comprises an electric push rod, a motor and a drill bit, the motor drives the drill bit to rotate and automatically removes the unbalance amount, and the electric push rod drives the motor and the drill bit to ascend and descend and automatically adjusts the amount value of the removed unbalance amount; the protection mechanism is arranged at the edge of the detection table and comprises three protection plates I and protection plates II, the three protection plates I are respectively fixed on the rear side, the left side and the right side of the detection table, and the pair of protection plates II is movably connected to the front side of the detection table. The dynamic balance detection and processing equipment can automatically complete flywheel dynamic balance detection and synchronously perform automatic de-weight processing, and is provided with a perfect protection structure at the same time.

The utility model discloses hoisting equipment for building construction, which comprises a base, a hoisting frame is arranged on the upper side of the base, an electric hoist is arranged at the upper end of the left side of the hoisting frame, a loading frame is arranged at the tail end of a hoisting rope in the electric hoist, and the hoisting equipment further comprises a balance mechanism; the balance mechanism comprises a balance shell, a partition plate, a longitudinal balancing weight, a first electronic level meter, a transverse balancing weight and a second electronic level meter, the balance shell is arranged in the middle of the lower side of the object carrying frame, the partition plate is arranged in the balance shell, and the longitudinal balancing weight is slidably connected into a first dovetail groove formed in the upper side of the partition plate. Through the transmission element and the detection element, horizontal inclination detection and horizontal self-adjustment can be automatically carried out on the hoisting part of the building object, so that the building object is always in a horizontal position in the hoisting process, the hoisting stability of the device on the building object is improved, the process is not limited by factors such as a screw rod, use is convenient, and the hoisting stability coverage range is wide.

The present invention relates to a pump apparatus for pressurizing liquid hydrogen, and more particularly to a pump apparatus equipped with a thrust balance mechanism for canceling axial thrust acting on an impeller. The pump apparatus includes a rotation shaft (1), a plurality of impellers (2a to 2h) fixed to the rotation shaft (1), bearings (5, 6) for rotatably supporting the rotation shaft (1), a pump casing (7) for housing the plurality of impellers (2a to 2h), and a first thrust balance mechanism (20) and a second thrust balance mechanism (40) for canceling the weight of a rotor including the rotation shaft (1) and the plurality of impellers (2a to 2h) and the axial thrust acting on the plurality of impellers (2a to 2h).

Implementations relate to a configurable counterbalance mechanism. In some implementations, a counterbalance apparatus includes a spring, a tension element coupled between the spring and a mechanical ground, a base element coupled to a load, and a configurable arm rotatably coupled to the base element. A first pulley and a second pulley are rotatably coupled to the configurable arm, the second pulley orbitable about the first axis, and the tension element is at least partially wrapped around the first pulley and the second pulley. The configurable arm is rotatably configurable at either a first orientation or a second orientation, where the first orientation is associated with a center of gravity of the load located on a first side of the counterbalance apparatus and the second orientation is associated with the center of gravity of the load located on a second side of the counterbalance apparatus opposite to the first side.

The utility model discloses a five-station horizontal glue adding balancing machine for a micro-motor rotor. The initial test station, the retest station, the assembly line station, the five-station rotary carrying mechanism and the five-axis dispensing mechanism are all installed on the machine body, the initial test station and the retest station are used for testing the unbalance amount of a rotor before dispensing and the unbalance amount of a rotor after dispensing respectively, and the assembly line station is used for carrying the rotor. The two five-axis dispensing mechanisms are installed on the two sides of the five-station rotary carrying mechanism respectively and used for dispensing the rotor to achieve weighting balance of the rotor, and the method comprises the steps that the rotor is placed on an assembly line station, the five-station rotary carrying mechanism is used for carrying the rotor to a primary testing station, and the dispensing amount and the dispensing angle of the two sides of the rotor are measured; and the five-axis dispensing mechanism is used for dispensing, weighting and balancing the rotor. According to the utility model, the rotor can be controlled to move in multiple directions, the dispensing station is controlled to move up and down and left and right, the dispensing process requirements of different products at different positions can be met, and the compatibility is good.

The invention provides a self-balancing double-rocker-arm floor derrick balancing mechanism, and relates to the technical field of double-rocker-arm floor derricks, the self-balancing double-rocker-arm floor derrick balancing mechanism comprises a floor derrick stand column, an auxiliary mechanism facilitating self-balancing of the floor derrick stand column is arranged on the floor derrick stand column, and the auxiliary mechanism comprises a PLC, a mounting side rod, a servo motor, a steel cable and a hydraulic controller; the PLC is located on the floor derrick stand column, the mounting side rods are located on the two sides of the PLC, the servo motors are located at the side ends of the mounting side rods, the steel cables are located at the lower ends of the servo motors, and the hydraulic controllers are located at the lower ends of the steel cables. According to the device, the hydraulic controller is arranged to be matched with the hydraulic claw, when a system detects that the load on one side is too large, the PLC can synchronously control the servo motor on the other side to release the corresponding amount of steel cables, and the whole derrick structure is promoted to slightly and controllably rotate or adjust the posture.

This invention relates to the field of industrial robots, specifically to a heavy-duty robot with an adjustable counterweight arm. A robotic arm structure and a counterweight structure are respectively arranged on both sides of a support column. A first motor is located above the support column, and the output end of the first motor is connected to a first lead screw. The first motor drives the first lead screw to rotate, controlling the robotic arm structure to move up and down along the lead screw. A connecting structure is provided between the robotic arm structure and the counterweight structure. The counterweight structure contains several counterweight blocks, and a counterweight adjustment component is located on one side of the counterweight structure. The counterweight adjustment component can automatically increase or decrease the number of counterweight blocks inside the counterweight structure to balance the weight of the robotic arm structure. The adjustment is automatic based on the weight difference between one side of the robotic arm structure and the other side of the counterweight structure, eliminating the need for manual adjustment of the number of counterweight blocks and improving work efficiency.

The invention discloses a multi-modal practical dynamic security domain construction method and system based on the maximum Lyapunov exponent theory, and the method comprises the steps: obtaining the measurement information of the active power, the power angle, the angular velocity and the like of a generator node from an actual power system, and determining a fault line and a fault state corresponding to a required dynamic security domain; transient simulation of an initial operation point of the system is carried out to obtain a transient stability condition and a power angle leading cluster of the system; for generators in the leading cluster S, calculating to obtain a maximum Lyapunov exponent characteristic value and related characteristics of a control variable, and solving the maximum Lyapunov exponent sensitivity; and constructing a multi-modal practical dynamic security domain based on the maximum Lyapunov index by combining the upper limit and the lower limit of generator output and the output limit of a balancing machine. According to the method, accurate transient stability evaluation before a fault occurs is realized, the application range is expanded, and the limitation that the stability margin cannot be quantified by track stability judgment is changed.

The invention relates to a dynamic balancing machine test bench, and relates to the technical field of balancing machines, the dynamic balancing machine test bench comprises a dynamic balancing machine body and a console used for controlling the dynamic balancing machine body, one side of the dynamic balancing machine body is provided with an air pump, the upper end of the air pump is communicated with an air pipe, the air pump is electrically connected with the console, the air pipe is communicated with a flow divider, the flow divider is communicated with a flow dividing pipe, and the flow dividing pipe is electrically connected with the console. A mounting table is arranged on one side of the dynamic balancing machine body, a height adjusting assembly used for changing the height of the mounting table is arranged on the lower portion of the mounting table, an annular rail is fixedly connected to the mounting table, an arc-shaped sliding rail is slidably connected to the annular rail, and a positioning pipe and a fixing assembly used for fixing the positioning pipe to the arc-shaped sliding rail are arranged on the arc-shaped sliding rail. The flow dividing pipe is fixedly connected and communicated with the positioning pipe, and an adjusting assembly used for adjusting the position of the arc-shaped sliding rail is arranged on the mounting table. The method has the effect of improving the detection precision of the dynamic balancing machine.

The application discloses a high-plain concrete ground rapid surface collecting device, which comprises a box body, a balance mechanism is arranged outside the box body, the balance mechanism comprises a fixed plate, the outer surface of the fixed plate is fixedly connected with a fixed frame, the body of the fixed frame is rotationally connected with a rotating rod penetrating through the fixed frame, one end of the rotating rod is provided with a locking assembly, the outer surface of the fixed frame is provided with a support plate, the outer surface of the support plate is provided with a walking assembly, the outer surface of the rotating rod is fixedly connected with a tumbler penetrating through the rotating rod, the outer surface of the tumbler is movably connected with the inner wall of the fixed frame, the outer surface of the tumbler is fixedly connected with a connecting rod, and the outer surface of the connecting rod is fixedly connected with the outer surface of the support plate, and relates to the technical field of building construction equipment, and solves the problems that the existing cement ground rapid surface collecting device is low in surface collecting efficiency, time-consuming and laborious in use, and poor in balance, and the cement ground surface collecting effect is reduced.

This invention relates to the field of wheel hub dynamic balancing testing technology and discloses an integrated wheel hub dynamic balancing testing device, including a dynamic balancing machine body. During testing, the operator places the wheel hub inside the wheel hub limiting block, then drives the wheel hub upward via a hydraulic lifting rod, aligning the center hole of the wheel hub with the rotating shaft. A servo motor is then activated, driving a lead screw to rotate, which in turn moves a slider, which in turn moves the wheel hub, allowing it to be fitted onto the rotating shaft. While the wheel hub is on the shaft, a clamping sleeve is threaded onto the shaft and tightened, thus securing the wheel hub. Finally, the drive motor drives the rotating shaft to rotate, thereby testing the wheel hub. This structure saves time and labor, reduces labor consumption, improves testing efficiency, and enhances the practicality of the integrated wheel hub dynamic balancing testing device.

The utility model relates to the technical field of hoisting of precast concrete, in particular to an auxiliary hoisting device for precast concrete. The two lifting hooks are used for hanging a concrete prefabricated part, and the two lifting hooks are rotationally arranged on the lower portion of the hanging bracket; the balance mechanism is fixedly arranged in the middle of the hanging bracket, the balance mechanism comprises a balance box with a containing cavity, a balancing weight arranged in the balance box and a driving assembly used for driving the balancing weight to reciprocate in the length direction of the balance box, and the balance of the concrete prefabricated part is adjusted by changing the position of the balancing weight in the balance box. According to the utility model, the balance mechanism is arranged on the hanging bracket, so that when the precast concrete is inclined during hoisting, the relative position of the balancing weight in the balance box is adjusted through the driving assembly, the gravity center distribution is changed, the posture of the hanging bracket is corrected to be in a balanced state, the shaking amplitude is reduced, the stability in the hoisting process is ensured, and the damage risk of the precast concrete is reduced; and the security threats of construction site personnel and peripheral settings are also reduced.

The application discloses a self-balancing offshore operation platform safety ladder and a use method thereof, which comprises a sliding seat arranged in a horizontal sliding mode, a connecting frame hinged to one end of the sliding seat, a footboard horizontally and rotationally connected to the connecting frame, and a counterweight hung at the bottom of the footboard, wherein a hoisting frame is installed at the top of the sliding seat, the top end of the hoisting frame is connected with the movable end of the connecting frame through a lifting rope, and a horizontal shaking buffer assembly is arranged between the connecting frame and the footboard. The self-balancing mechanism and the buffer assembly significantly improve the stability of the safety ladder under complex sea conditions, the real-time response and anti-skid design ensure the safety of personnel getting on and off the platform, and the quick installation and modular design facilitate daily use and maintenance.

The invention provides a vertical sand pump, and relates to the technical field of pump equipment, the vertical sand pump comprises a motor, the lower end face of the motor is connected with four groups of supporting rods, and the other ends of the supporting rods are connected with a bottom plate; the water conveying mechanism comprises a volute, the side wall of the volute is connected with a water outlet pipe, a throwing-out wheel is rotationally connected into the volute, the lower end face of the throwing-out wheel is connected with a pushing wheel, and the pushing wheel is also rotationally connected with the inner side of the volute; the vertical sand pump further comprises a balance mechanism, the balance mechanism comprises a shell, the upper end face of the shell is fixedly connected with the lower end face of the volute, the lower end face of the shell is connected with a base, multiple sets of water inlet grooves are formed in the outer side wall of the shell, and middle rods are arranged between the water inlet grooves. The problem that a traditional sand pump lacks self-adaptive adjusting capacity when the sand content changes suddenly is solved, and dynamic balance of high-sand-content water flow is achieved.

The utility model belongs to the field of long steel rail overline laying construction, and particularly relates to hoisting equipment for overline replacement and laying of long steel rails. Comprising a flat car, a balancing weight and a hoisting device, the balancing weight and the lifting device are arranged on the flat car in the length direction and can slide in the width direction of the flat car. The lifting device comprises a movable platform, a middle column, a lifting arm and a lifting hook; the mobile platform is used for sliding on the flat car, the middle column is installed on the mobile platform, the suspension arm is connected with the middle column, the suspension arm is divided into a cargo boom and a balance arm by taking the middle column as a boundary, and a lifting hook runway is arranged on the cargo boom; a balance mechanism is connected between the balance arm and the flat car; compared with the traditional rail changing operation, after the hoisting equipment for changing and laying the long steel rails in the cross-line mode is adopted for rail changing operation, the construction efficiency is greatly improved. And the operation time of one-time rail changing and rail welding is controlled within two hours. And the blocking construction of the small area has less influence on the operation of other vehicles.

The application discloses a large-torque rotary jet mixing pile construction device and belongs to the field of geotechnical engineering. The device comprises a rotary jet mixing pile construction platform, the surface of the rotary jet mixing pile construction platform is provided with four balancing mechanisms, the four balancing mechanisms are symmetrically distributed on the surface of the rotary jet mixing pile construction platform, the balancing mechanism comprises a fixing block, the fixing block is fixedly connected with the rotary jet mixing pile construction platform, a jack is fixedly connected in the interior of the fixing block, the telescopic end of the jack is fixedly connected with a supporting block, the jack is fixed through the fixing block, the supporting block is moved by the telescopic jack, the rotary jet mixing pile construction platform is leveled by the supporting block abutting against the ground, the flatness of the rotary jet mixing pile construction platform is detected in real time by an inclination sensor, the traditional rotary jet mixing pile construction device cannot level the drill chassis in real time, the problem that the drilling is easily inclined is avoided, and the practicability is improved.

The invention relates to the technical field of gravity center measurement, in particular to a gravity center horizontal measuring frame which comprises a main body plate, a clamping and measuring mechanism for clamping objects in any shape and measuring the gravity center is arranged at the upper end of the main body plate, and the clamping and measuring mechanism comprises four first containing grooves symmetrically formed in the upper end of the main body plate. Protection rings are fixedly connected to the positions, in the four first containing grooves, of the main body plate correspondingly, second containing grooves are formed in the positions, in the first containing grooves, of the upper end of the main body plate correspondingly, and an overturning mechanism for overturning an object and measuring the weight of the object is arranged in the main body plate; a balance mechanism for keeping the main body plate horizontal is arranged below the main body plate; a third pressure sensor at the telescopic end of a third electric telescopic rod can accurately measure the weight of the object, it is guaranteed that the real-time weight of the object can be accurately measured before measurement, and the precision of subsequent gravity center measurement is improved.

The utility model provides a dynamic balancing machine for detecting an axle hub brake drum assembly, comprising a machine body, the machine body is provided with a balance detection tool, the balance detection tool comprises a pull rod, and the balance detection tool is provided with the axle hub brake drum assembly; the rotating part is arranged on the machine body and is connected with the balance detection tool; the detection mechanism is mounted on the machine body in a sliding manner; the lifting transmission mechanism is installed on the machine body and connected with the detection mechanism, the lifting transmission mechanism drives the detection mechanism and the rotating component to do lifting motion under the action of the driving force, and the detection mechanism drives the balance detection tool on the rotating component to rotate. And the detection mechanism detects the unbalance vibration amplitude of the axle hub brake drum assembly on the balance detection tool, so that the unbalance vibration amplitude of the axle hub brake drum assembly can be automatically and rapidly detected, the detection efficiency is greatly improved, the operation is simple, and the structure is compact.

The application relates to the technical field of compression performance testing, in particular to a regenerated polyester fiber roadbed reinforcing material compression performance testing device and method thereof through sensor monitoring, which comprises a supporting plate, a support fixed on the supporting plate, and a top plate arranged at the top of the support; a pressure tank fixed on the supporting plate is used for bearing water, a rubber pipe is arranged in the pressure tank, and pressure regulating pipes are symmetrically arranged on the side wall of the pressure tank; a pressure regulating mechanism is arranged in the pressure regulating pipe, a piston disc in sliding sealing connection with the pressure regulating pipe is connected to the pressure regulating mechanism, a follow-up balance mechanism is arranged on the pressure regulating mechanism, when a sample arranged in the rubber pipe is compressed and the side edge of the sample is deformed, water enters the pressure regulating pipe and pushes the piston disc, under the action of the pressure regulating mechanism and the follow-up balance mechanism, the support force borne by the piston disc can be kept within a certain range at all times, so that the accuracy of the compression performance test is ensured.

The invention discloses a gearbox disassembly lifting appliance for offshore wind power, which comprises a cross beam, a first lifting hook, a second lifting hook and a balance mechanism, the cross beam extends along the horizontal direction, the first lifting hook is connected with the first end of the cross beam, the second lifting hook is provided with an elastic reset piece, and the balance mechanism is arranged on the cross beam. The second lifting hook is connected with the second end of the cross beam and moves relative to the cross beam in the vertical direction under the driving of an elastic reset piece, and the balance mechanism is located at the first end of the cross beam and slides in the axial direction of the cross beam. The gearbox disassembling lifting appliance for offshore wind power has the advantages of being convenient to adjust to keep horizontal and high in safety.

The invention relates to the technical field of robot control, and discloses a tracking method, device and equipment for a self-balancing robot and a medium, and the method comprises the steps that the self-balancing robot serving as a slave vehicle obtains a target pose at a lower first frequency, and the motion state including the position, the speed and the acceleration is calculated according to the target pose; in order to adapt the high-frequency control required by the self-balancing robot, the method performs extrapolation processing on the determined motion state so as to generate a target track which has a frequency far higher than the first frequency and is continuously updated at a second frequency. And finally, the robot determines a control moment according to the high-frequency target trajectory, and realizes stable following of the moving target serving as the main vehicle on the premise of maintaining self dynamic balance. The high-frequency trajectory is generated through extrapolation, the technical problem that low-frequency pose acquisition and high-frequency balance control requirements are not matched is effectively solved, and the continuity and stability of tracking control are improved.

This utility model relates to the field of horizontal jack manufacturing technology, and in particular to a differential pressure balanced oil discharge valve, a control valve assembly, and an electric pump station. The differential pressure balanced oil discharge valve is the core component for achieving smooth jack descent, and includes a valve body, a valve core assembly, a pressure balancing mechanism, and a drive assembly. The valve body has a first oil passage and a second oil passage; the inner valve core of the valve core assembly has a pressure balancing channel, and an elastic reset element provides initial sealing pre-tightening force; the pressure balancing mechanism seals the pressure balancing channel through a sealing body. The drive assembly employs a two-stage control: the first stage pushes the pusher to open the sealing body, initially connecting the first and second oil passages, balancing the oil pressure, and reducing the pressure difference of the inner valve core; the second stage directly acts on the inner valve core, causing it to overcome the pre-tightening force to fully connect the first and second oil passages, achieving smooth hydraulic oil return, ensuring stable and vibration-free jack descent, while reducing operating force and improving safety and convenience.

The utility model provides a quick locknut for a tire balancing machine and a tire changer, which comprises a cylinder base body, handles, a split nut block and a first spring, the handles are arranged on two sides of the cylinder base body, the split nut block and the first spring are arranged in the cylinder base body, a round pin and a pan head bolt are arranged above the split nut block, and the first spring is arranged above the round pin. The air cylinder base body is installed on the lead screw, and threads matched with each other are arranged on the surface of the lead screw and the surface of the split nut block. The product weight is light; the quality is good; the bearing capacity is large, a tire changer and a tire balancing machine can be universally used, and the variety of materials is greatly reduced; the quick locking nut is applied to a tire dismounting machine, the cone is additionally arranged at the bottom, the quick positioning and locking effect can be achieved, the quick locking nut can be applied to other industries due to large bearing capacity and looseness prevention, and the application range is greatly widened.

The utility model relates to the technical field of balance test fixtures, in particular to a gyrorotor dynamic balance test fixture which comprises a U-shaped base, fixing plates are arranged at the tops of two side arms of the base, a second screw hole is formed in the outer end of a boss, a sliding groove is formed in the inner end of the boss, an adjusting rod is arranged in the second screw hole, and a clamping seat is arranged at the inner end of the adjusting rod. A rotor is matched between the two clamping seats; according to the gyroscope rotor dynamic balance test clamp, the base with the fixing plate is arranged, external screws penetrate through the fixing holes to be combined and fixed with the corresponding dynamic balancing machine, the base can be conveniently and rapidly combined and fixed, the adjusting rod with the clamping seat is rotationally connected with the boss on the base, the clamping seat is provided with the shaft groove, and the shaft groove is clamped in the shaft groove. The device can be conveniently inserted and matched with a rotating shaft of a rotor needing to be tested, the two clamping seats realize distance adjustment matching under the rotation matching of the adjusting rod, the rotors with different widths can be stably clamped and matched, and the position of the adjusting rod is fixed through a positioning bolt under the action of friction force.