402 results about "Balance wheel" patented technology

The invention belongs to the technical field of hoisting equipment, and particularly relates to a long cantilever beam hoisting device which comprises a base mechanism, a stand column mechanism, a suspension arm mechanism and a traction mechanism. In order to solve the problem that an existing lifting device has the overturning risk in the lifting and rotating process, the vertical column mechanism is arranged in the mode that the center of gravity of an attachment is reduced to improve the stability, the lifting arm load is carried on the vertical column mechanism, and then the lifting arm load is connected with the lifting arm mechanism, so that the stability of the lifting arm mechanism is guaranteed, and meanwhile the stability of the lifting arm mechanism is improved. The gravity center of the equipment is lowered, and meanwhile, the load of the equipment is nested with the stand column mechanism, so that the overall size can be effectively reduced, and the hoisting stability can be improved; besides, an angular momentum balance device is carried on the suspension arm mechanism to drive the left balance wheel and the right balance wheel to rotate, the stability of the suspension arm mechanism is improved through angular momentum generated by rotation, and shaking of goods in the lifting and moving process is reduced.

The sorting friction structure comprises a driving motor, a driving shaft, a lower bottom plate, a middle floating plate, an ascending top plate, a jacking cam, a transverse moving cam, a vertical jacking plate, a horizontal follow-up plate, a balance wheel assembly and a chain plate, a plurality of first magnets are arranged on the ascending top plate, the jacking cam and the transverse moving cam are arranged on the driving shaft, the vertical jacking plate is connected with the ascending top plate, and a plurality of second magnets are arranged on the horizontal follow-up plate. The horizontal follower plate is connected with the middle floating plate, the balance wheel assembly comprises a plurality of balance wheel units, balance wheel driven components matched with the balance wheel driving components are arranged on the balance wheel units, the balance wheel units penetrate through the ascending top plate, and second magnets are arranged at the tops of the balance wheel units which ascend and descend along with ascending and descending of the ascending top plate; the multiple first magnets and the multiple balance wheel units are arranged in a one-to-one correspondence mode, the first magnets are arranged on the terminal sides of the corresponding balance wheel units in the cargo conveying direction, and the first magnets and the second magnets repel each other. Compared with the prior art, the problem that the sorting wheel and the balance wheel interfere with each other in the prior art is solved.

The utility model discloses a self-propelled mower which comprises a rack, a mowing device, an advancing device and a driving device, the driving device comprises a driving piece and a transmission mechanism, and the transmission mechanism comprises a gear unit and a belt pulley unit; the gear unit is in driving connection with an output shaft of the driving part; the belt pulley unit is in driving connection with a power shaft of the rotary cutter; the belt wheel unit comprises a first belt wheel, a second belt wheel and a balance wheel, the first belt wheel and the second belt wheel are in transmission connection through a first synchronous belt, and the balance wheel is located between the first belt wheel and the second belt wheel, abuts against the outer side of the first synchronous belt and pushes the first edge of the first synchronous belt inwards towards the second edge of the first synchronous belt; the balance wheel is assembled on a swing rod and can swing relative to the first belt wheel and the second belt wheel, a tension spring is assembled on the swing rod, and the tension spring provides trend force for the balance wheel to abut against the first synchronous belt all the time. The utility model has the advantages of strong self-adaptive ability and high operation efficiency.

An intelligent contact line automatic milling, grinding and polishing device comprises a mounting frame and a plurality of balance wheel assemblies, positioning wheel assemblies, milling and grinding assemblies, polishing wheel assemblies and walking wheel assemblies which are mounted on the mounting frame, each milling and grinding assembly comprises a middle mounting plate and a milling and grinding device arranged above the middle mounting plate, a guide rail is arranged on the top face of a bottom plate, and the top face of the bottom plate is provided with a guide rail. The extending direction of the guide rail is perpendicular to the walking direction of the equipment, a guide groove is formed in the bottom of the middle mounting plate, and the guide groove is clamped on the guide rail and can move along the guide rail; the milling and grinding device comprises a milling and grinding base and a cutter arranged on the milling and grinding base, the cutter is arranged in a disc shape, and the cross section of the outer surface of the cutter is arranged in a concave arc shape. According to the repairing equipment, sharp corners and burrs on the two sides of an abraded contact net line can be machined into arc-shaped transition or filleted corners, fine adjustment and correction can be conducted on equipment inclining in the walking process, and the repairing quality is greatly improved; the practicability is high, and the popularization significance is high.

The invention relates to the technical field of mechanical watch tourbillon, in particular to a rotation inertia adjustable double-shaft tourbillon structure which comprises a frame plate, a first direction shaft, an outer tourbillon, a second direction shaft, an inner tourbillon, an escapement mechanism and a transmission wheel train. The inner tourbillon is rotationally connected with the outer tourbillon through a second direction shaft, the escapement mechanism is arranged in the inner tourbillon and comprises an escapement wheel, an escapement fork and a hairspring balance wheel, four adjusting columns are arranged on the surface of the hairspring balance wheel in the circumferential direction of the hairspring balance wheel at equal intervals, the adjusting columns are sleeved with C-shaped weights, and the C-shaped weights are in interference fit with the adjusting columns; the transmission wheel train is used for driving the inner tourbillon to rotate around the second direction shaft while driving the outer tourbillon to rotate around the first direction shaft and driving the escapement wheel to rotate at the same time. The balance wheel has the effect that the rotation inertia of the balance wheel can be flexibly adjusted.

To control the rate of a mechanical watch with high precision. [Solution] In mechanical watches, A sensor detects the vibrations of the balance, and the cumulative frequency is compared with the clock cumulative frequency of the reference oscillator to calculate the rate error. Based on this error, a control method is determined, and mechanical energy is injected into the balance by an actuator to control the rate. For even more precise control, abnormal vibrations are recorded to evaluate the reliability of the measurements and adjust the control strategy accordingly. In addition, if sensor detection is difficult, it is supplemented by phantom counts estimated from the reference oscillator. If necessary, it is also possible to identify external factors using auxiliary sensors. When high reliability is required, sensors with different detection principles can be duplicated and cross-verified. This configuration enables implementation at various levels, from basic rate control to advanced adaptive control.

The invention is suitable for the field of cycloidal speed reducers, and provides an RV speed reducer which comprises a shell assembly, an input assembly and a speed reduction assembly and is characterized in that the shell assembly comprises a front supporting shell, a rear supporting shell, a positioning bolt and a positioning shaft, and the front supporting shell and the rear supporting shell are fixedly installed through the positioning bolt; positioning holes are annularly formed in the supporting front shell and the supporting rear shell, the positioning shaft is installed in the positioning holes in a rolling mode, the speed reduction assembly comprises a speed reduction sealing cover, a planet assembly and a main speed reduction assembly, the speed reduction sealing cover is installed in the supporting front shell through a bearing, and the circle center of the speed reduction sealing cover coincides with the circle center of the supporting front shell; and the kinetic energy transmission efficiency and the maximum running speed are improved, so that the joint is more suitable for high-speed robot speed reduction joints. Pitting corrosion, micro pitting corrosion and eccentric wear of the balance wheel are avoided, and the service life of the speed reduction assembly is prolonged.

The invention relates to an express balance wheel sorting machine control method and device and a sorting machine, and aims to improve the cargo posture stability and transmission efficiency in the logistics sorting process. The method comprises the following steps: receiving goods sorting path information, and generating a synchronous control instruction including swing wheel disc angle deflection, goods linear speed and a four-wheel belt transmission mechanism; the deflection angle of each swing wheel disc is calculated in real time, and on the premise of ensuring stable conveying of goods and balanced stress of each roller, the optimal rotating speed of a driving wheel is dynamically solved by adopting a multi-target dynamic optimization model on the basis of transmission balance among the driving wheel, a tensioning wheel and a driven wheel, so that the vibration torque of each belt is minimum, and the transmission efficiency is maximized. The control device is composed of a path information receiving module, a control instruction generating module, a swing wheel disc angle control module, a linear speed control module and a shearing vibration control module, efficient, low-energy-consumption, cooperative and intelligent control and stable transmission of the multi-swing-wheel disc sorting mechanism in the sorting process are achieved, and the multi-swing-wheel disc sorting mechanism is suitable for a logistics automatic sorting system.

The utility model discloses a module belt structure convenient for balance wheel embedding for logistics sorting, the module belt structure is a plate-shaped structure, a plurality of sorting wheel mounting grooves for mounting roller type sorting wheels and a plurality of driving tooth meshing grooves are arranged on the module belt structure, the driving tooth meshing grooves are matched with driving tooth structures, and the driving tooth structures are matched with the sorting wheel mounting grooves. A receding groove is formed in the surface, close to one side of the balance wheel, between every two adjacent sorting wheel mounting grooves, the receding grooves extend in the moving direction of the module belt structure, axial deviation of the balance wheel is effectively limited through the arrangement of the receding grooves, mistaken contact between the balance wheel and the sorting wheels is avoided, misoperation is prevented, and the service life of the module belt structure is prolonged. Compared with an improved balance wheel process for preventing the balance wheel from axial deviation, according to the improved scheme, the structure of the module belt is improved, the position of the balance wheel is limited through the outside, the improvement cost is greatly saved, the remarkable effect is achieved, and the practical significance is achieved for production.

A mechanical timepiece includes: a hairspring; a permanent magnet; a soft magnetic core; a control circuit for performing rate adjustment based on a counter-electromotive voltage caused in a coil by a motion of the permanent magnet accompanying a forward direction motion and a reverse direction motion of the balance wheel. The permanent magnet is arranged so that, under a state in which the hairspring is brought to an equilibrium length, a direction of magnetization is directed to the first end portion side or the second end portion side.

The utility model discloses an electric roller balance wheel sorting machine which comprises a machine body, a panel and a plurality of balance wheel assemblies, the panel covers the top face of the machine body, and the balance wheel assemblies are rotationally arranged on the machine body; the balance wheel assembly comprises electric rollers, a slotting cover plate and a support, a plurality of mounting hole positions corresponding to the electric rollers in a matrix mode are formed in the surface of the panel, the slotting cover plate is fixedly arranged at the top of the support and embedded in the mounting hole positions, the electric rollers are rotationally arranged on the support, and the upper surfaces of the electric rollers are exposed out of the middle of the slotting cover plate. A fixing frame is arranged in the machine body, a rotating piece is rotationally arranged at the bottom of the support, and the lower portion of the rotating piece is fixedly arranged on the fixing frame; the swing driving device is linked with the electric roller to rotate around the center of the rotating piece, so that the direction of the electric roller is changed. The balance wheel sorting machine is high in efficiency, the utilization rate of the internal space of the balance wheel is increased, the equipment cost is reduced, and the stability of parcel sorting is improved.

The utility model provides a swing reducing device for a lifting hook group of a bridge crane, which is characterized by comprising a steel wire rope of a winding plant, a left fixed pulley block, a right fixed pulley block, a left movable pulley block, a right movable pulley block and a balance wheel, two ends of the steel wire rope are respectively fixed at two ends of a winding drum of the winding device; the middle of the steel wire rope is hung on the balance wheel to form a balance wheel section; the left section of the steel wire rope comprises a left winding section wound around the left section of the main winch winding drum, a left fixed pulley section wound around the left fixed pulley block and a left movable pulley section wound around the left movable pulley block; the right section of the steel wire rope comprises a right movable pulley section bypassing the right movable pulley block, a right fixed pulley section bypassing the right fixed pulley block and a right winding section bypassing the right section of the main winch winding drum. The friction force between the steel wire rope and the fixed pulley block as well as the friction force between the steel wire rope and the movable pulley block and the balance effect of the balance wheel can reduce the swing of the crane hook group.

To provide an actuation mechanism that is adaptable to a linear displacement actuator.SOLUTION: A clock movement-purpose speed governing member 1 comprises: means for adjusting inertia mass, for example, a balance spring 25 including a balance with hairspring 23 and a wound ribbon, and rigidity of the balance spring. The speed governing member includes a mechanism for actuating the adjustment means, and an actuation mechanism includes: an actuator 30 that includes a movable part mechanically linked to the adjustment means; and means for adjusting the actuator. The adjustment means includes a pivotal control lever 45, and the control lever includes a support arm and pivotal arm cooperating with the movable part of the actuator for mechanically displacing the movable part.SELECTED DRAWING: Figure 2

A method for manufacturing a batch of horological balance springs (2a), the average of whose stiffnesses lies within a predetermined range, includes forming in a wafer the horological balance springs (2b, 2c) with dimensions that differ from the dimensions required to obtain the batch of horological balance springs (2a), the average of whose stiffnesses lies within said predetermined range; determining the stiffnesses of said systems; computing a dimensional correction to be applied to the horological balance springs; andmmodifying the dimensions of the horological balance springs (2b, 2c) formed, on the basis of a dimensional correction computed to obtain the batch of horological balance springs (2a).

The utility model discloses double-layer four-station roller AGV conveying equipment which is characterized in that equipment frames are installed on the top of a chassis, a roller conveying line module is installed between the equipment frames, and a driving assembly, a balance wheel assembly and an obstacle avoidance laser radar are installed on the top of the chassis; the roller conveying line module comprises two conveying tables installed between the equipment frames. By designing the four roller conveying line modules, automatic butt-joint feeding can be achieved, the double-layer four-station design space is larger, more materials are conveyed, displacement is driven by the driving assembly after feeding, the balance wheel assembly can assist movement, an obstacle avoidance laser radar is installed on the trolley, the trolley can effectively detect obstacles, and the obstacle avoidance efficiency is improved. In this way, a plurality of material boxes can be conveyed at the same time through the multi-station conveying line, the conveying task is completed, meanwhile, the conveying cost can be reduced, and the conveying efficiency can be improved.

The utility model relates to the technical field of electric draw-bar boxes, in particular to a wheel set structure for an electric draw-bar box, which comprises a balance wheel set mounted at the bottom of a box body and an auxiliary wheel set mounted at the lower end of a handle component, the driving wheel piece is located between the balance wheel set and the auxiliary wheel set. By adopting the design of the balance wheel set, the auxiliary wheel set and the power wheel, the whole luggage case is balanced by five wheels, the balance effect is good, a user has better stability when the user sits on the luggage case to move, and the adjusting pieces are designed among the balance wheel set, the auxiliary wheel set and the case body, so that the balance effect is better. The heights of all the wheel sets are adjusted and matched through the adjusting pieces, so that the bottoms of all the wheels are located on the same plane, the stability of supporting movement is guaranteed, in addition, the auxiliary wheel sets are connected to the handle assembly and can rotate along with the handle assembly, and steering in the movement process is achieved.

The utility model relates to a multi-section balance wheel control conveying platform for EVA (Ethylene Vinyl Acetate) rubber sheets, which comprises a balance wheel conveying platform, a photoelectric switch and a controller, and the balance wheel conveying platform comprises at least two groups of basic balance wheel conveying platforms and at least one group of auxiliary balance wheel conveying platforms; the balance wheel conveying platforms are sequentially connected end to end from back to front, and are independently controlled balance wheel conveying platforms; the controller is in electric control connection with the basic balance wheel conveying platform; and a photoelectric switch is mounted at the inlet end of each group of balance wheel conveying platform. The balance wheel conveying platform has the advantages that the design is ingenious, the structure is reasonable and compact, the balance wheel conveying platforms capable of independently operating are controlled through the controller, one set of balance wheel conveying platforms are independently driven and deflected, or multiple sets of adjacent balance wheel conveying platforms are combined to synchronously drive and deflect; through cooperation of multiple groups of balance wheel conveying platforms, automatic and stable discharging of EVA rubber sheets with different lengths is achieved, and the phenomena of scattering and the like are avoided.

The utility model provides a kind of windproof iron wedge of flexible transmission, including rack;Driving mechanism is set on rack;Transmission mechanism, including balance wheel, fixed pulley set and transmission arm, balance wheel is rotatably set on rack, fixed pulley set is set on rack and is located the below of balance wheel, transmission arm one end is connected with balance wheel, other end is connected with the output end of driving mechanism;Wedge, by multiple connecting ropes be connected in the below of rack, the middle portion of connecting rope is passed through fixed pulley set, and its end portion is wound and fixed on balance wheel;Wherein, balance wheel includes at least two take-up radius different take-up part, when driving mechanism drives balance wheel to rotate by transmission arm, drive the connecting rope wound on different take-up part and carry out different amount take-up, to make wedge produce inclination change in lifting process.The utility model uses flexible transmission structure to replace traditional rigid link transmission, can significantly improve the reliability of windproof brake.

The utility model discloses a bridge crane ascending limit heavy punch which comprises two shackles, the two shackles are symmetrically arranged, the shackles are respectively clamped and wound on a hoisting main steel wire rope on two sides of a hoisting mechanism balance wheel, each shackle comprises a transverse pin and a U-shaped bent ring, the U-shaped bent ring is horizontally arranged, and the transverse pin is connected with the U-shaped bent ring. Pin holes allowing the transverse pin to penetrate through are formed in the open ends of the outer sides of the two U-shaped bent rings respectively, the inner sides of the U-shaped bent rings are in threaded connection with the transverse pin, the U-shaped bent rings are fixed through the connecting transverse plate, a semicircular lifting lug is arranged at the center balance position of the top of the connecting transverse plate, and the opening direction of the semicircular lifting lug is perpendicular to the plane of the connecting transverse plate. By means of the double-shackle symmetrical structure design, the problem that a traditional limiting heavy hammer rotates and winds due to single-point hoop fixing is fundamentally solved, the two U-shaped bent rings and the interceptable connecting transverse plate are rigidly welded to form a balance system, and the heavy hammer is kept in a zero-rotation state when a lifting steel wire rope rotates.

The utility model belongs to carton conveying technical field, concretely relates to a kind of carton conveying device that can automatically branch, including base and the feed channel being set on base, the balance wheel conveying mechanism is arranged on base;Further include: adjusting mechanism, the adjusting mechanism is set below feed channel;Detection probe, the detection probe is set on adjusting mechanism, angle conversion is carried out by adjusting mechanism to drive detection probe, the carton conveying device that can automatically branch, through the adjusting mechanism below feed channel, drive detection probe to adjust angle flexibly, the position and posture before carton enters feed channel are monitored in real time, through the balance wheel conveying mechanism on base, both can realize the conventional transport of carton, and carton can be completed plane rotation by different direction conveying force.

This invention relates to a watch movement including a generator. The electromechanical watch movement (2) includes pointer-type time display devices (25, 26) and is provided with: at least one electromechanical motor for driving at least one indicator of the pointer-type time display; and a generator (20) including a rotor (20A) and associated with a balance wheel (22) coaxial with the time display device. The watch movement includes a first wheel (40) provided with a shaft (36) coaxial with the indicator, which in a primary embodiment is guided to rotate by a fixed cylindrical tube (30). At least one gear shaft (26) of the time display device is rotatably mounted around the fixed cylindrical tube (30). The first wheel (40) meshes with the rotor of the generator and is fixedly connected to the balance wheel on a side opposite the pointer-type time display, such that the balance wheel can rotate the rotor of the generator via the first wheel.

The utility model relates to a linear sliding mechanism of cloth spreading wheel blade of cloth spreading machine, and belong to cloth spreading machine equipment technical field, the utility model discloses cloth spreading wheel axle, cloth spreading wheel fixed ring, cloth spreading wheel coupling wheel, cloth spreading wheel cam, claw wheel, balance wheel, cloth spreading wheel aluminium pipe and multiple sets of cloth spreading wheel blade, and the inside circle of cloth spreading wheel axle can do the circumferential motion around cloth spreading wheel axle, and the end of cloth spreading wheel axle has cloth spreading wheel coupling wheel and cloth spreading wheel cam, and there is claw wheel on cloth spreading wheel coupling wheel, and cloth spreading wheel coupling wheel is arranged the cloth spreading wheel cam axially, and the outside circle of cloth spreading wheel fixed ring is covered with cloth spreading wheel aluminium pipe and can drive fixed ring to rotate around cloth spreading wheel axle, and there are several sets of cloth spreading wheel blade on the outer circumferential surface of cloth spreading wheel aluminium pipe, and the cloth spreading wheel blade is strip -shaped and sets up axially along cloth spreading wheel aluminium pipe, and there is balance wheel on cloth spreading wheel cam, and the connecting structure that the cloth spreading wheel blade is connected with linear sliding is made. The utility model has the advantages of reasonable structure, stable and reliable, realizes cloth spreading long -time operation stability, convenient operation, satisfies the use demand.

To provide a balance with a hairspring that can maintain high accuracy, a watch, and a method for manufacturing a balance with a hairspring.SOLUTION: A balance with a hairspring comprises: a balance staff 410 that is rotatably supported on a bottom board; a collet 440 that is fixed to the balance staff 410; a balance spring 70 that is fixed to the collet 440, and has the Grossmann curve arranged on the side of the collet 440 and the Archimedes curve connected with the Grossmann curve; and a shock resistant member 500 that prevents displacement of the shape of the Grossmann curve at least on the side of the collet 440.SELECTED DRAWING: Figure 5

The invention relates to an EVA rubber sheet suspension type conveying platform which comprises a balance wheel conveying platform and an air blowing part, the balance wheel conveying platform comprises a conveying platen, balance wheel parts and a box body, the conveying platen is installed at the upper end of the box body, a plurality of balance wheel parts are installed in the box body, and the upper ends of balance wheels of the balance wheel parts extend out of the conveying platen by a certain height respectively. Through holes are formed in the positions, on the conveying platen, of the periphery of each balance wheel. The conveying device has the advantages that the design is ingenious, the structure is reasonable and compact, the air holes blowing air towards the inclined front side are formed in the conveying platen and located around the balance wheel of the balance wheel part, so that the positions, not making contact with the balance wheel, of the EVA rubber sheet can be blown by airflow, the EVA rubber sheet is in a suspended state, relative friction contact between the EVA rubber sheet and the balance wheel is reserved, and therefore the conveying device can be used for conveying the EVA rubber sheet. Therefore, the friction force between the EVA rubber sheet and the conveying platen is almost zero, and the transmission of the EVA rubber sheet by the balance wheel is not influenced.

The utility model discloses an automatic angle adjusting mechanism for a sand blasting gun used in a high dust environment, which comprises a lifting arm and a sealed protective shell, the front side of the lifting arm is fixedly provided with an adjusting motor through a screw, the output end of the adjusting motor is fixedly provided with an eccentric balance wheel, the left side surface of the eccentric balance wheel is fixedly connected with a first bearing sealing ring, and the right side surface of the eccentric balance wheel is fixedly connected with a second bearing sealing ring. The right end of the eccentric balance wheel is rotationally connected with a combined conveying rod, the bottom end of the combined conveying rod is rotationally connected with a supporting rod, dust covers are fixed to the left side and the right side of the rotating rod correspondingly, second bearing sealing rings are fixed to the inner ends of the dust covers, and spray gun mounting rotating shafts are fixed to the outer sides of the dust covers. The sealed protective shell is fixed to the front side face of the lifting arm. According to the automatic angle adjusting mechanism for the sand blasting gun used in the high-dust environment, the angle of the sand blasting gun on the spray gun mounting rotating shaft is conveniently adjusted, dust is prevented from entering the sealed protective shell to affect a transmission part, and the service life of the transmission part can be greatly prolonged.

A stud-holder (1) for a regulating member (10) of a horological movement, the regulating member (10) including an inertial mass, for example a balance (23), a balance spring (25) including a strip (2) wound about itself in several turns, and a balance cock (22), the stud-holder (1) including a main body (31) intended to be mounted on the balance cock (42), and a stud (34) mounted on the main body (31) in a first direction, wherein the stud-holder (1) includes an arm (5) extending from the stud (34), the arm (5) being directed in a second direction under the main body (31), the second direction forming a non-zero angle with the first direction, so as to pass at least in part beneath a balance spring (25) held by the stud (34), when the stud-holder (1) is mounted on the regulating member (10).

The utility model discloses a construction ground leveling machine which comprises a machine frame (1), a base (4) and a leveling mechanism, balance wheels (2) are arranged on the two sides of the machine frame (1), the base (4) is arranged on the machine frame (1) and can rotate in the vertical direction relative to the machine frame (1), the leveling mechanism is arranged on the base (4) and can move in the length direction of the base (4) and level mortar ground, and the leveling mechanism which enables the base (4) to be kept horizontal is arranged on the lower side of the base (4). And a lifting mechanism for automatically adjusting the leveling height is arranged on the leveling mechanism. The angle of the base below the leveling mechanism can be adjusted, so that the base is always in a horizontal state, and leveling work is facilitated.

The invention discloses a balance wheel stabilizing structure and a three-way forklift, and relates to the field of three-way forklifts.The balance wheel stabilizing structure comprises a frame, a brake assembly, a wheel carrier, a connecting shaft, a balance wheel, a compression spring and a limiting assembly; the brake assembly is arranged on the side face of the frame and comprises an electromagnetic valve, a hydraulic oil cylinder connected with the electromagnetic valve and a piston rod arranged in the hydraulic oil cylinder. An upper cavity and a lower cavity of the hydraulic oil cylinder are communicated with a hydraulic source through the electromagnetic valve, the piston rod extends out of the hydraulic oil cylinder to be connected with the wheel carrier, the balance wheel is movably connected to the connecting shaft, the wheel carrier is connected with the connecting shaft, the pressure spring is arranged between the hydraulic oil cylinder and the piston rod, and the limiting assembly is connected between the frame and the piston rod to limit the stroke of the piston rod. The electromagnetic valve switches the locking state and the floating state of the balance wheel by opening and closing an oil way of the hydraulic oil cylinder, so that the single balance wheel structure can meet the two requirements of high-stability operation and high-adaptability running at the same time.

The utility model belongs to the technical field of balancers, and particularly relates to a novel wide cabinet body universal balancer, a wide cabinet and a drawer installed in the wide cabinet, and one end of the drawer is of an L-shaped structure to block an opening of a groove body of the wide cabinet; symmetrical balancers are arranged on the two sides of the other end of the drawer, the balancers are used for reducing resistance and vibration when the wide cabinet is pushed and pulled to ensure stability during sliding, and a balance wheel used for abutting against the inner wall of a groove body of the wide cabinet is arranged in one end of each balancer. The other end of the balancer is provided with a control wheel used for adjusting the tightness degree of the balance wheel, and the two sides of one end of the drawer are each provided with a bottom plate used for being in butt joint with the balancer. According to the utility model, the weight of the drawer can be effectively balanced, so that the drawer is more stable when being pulled out or pushed in, the possibility of shaking or toppling is reduced, the drawer is easier and more convenient to operate, and the use experience of a user is improved.

A mechanical movement impact resistance testing tool comprises a test support, a test base plate, a pendulum clamp, a shock absorber unit, and a position limiting assembly. The test support is provided with at least one mounting hole. The test base plate is fixed in the mounting hole. The upper surface of the test base plate is provided with a groove for receiving a balance wheel. The bottom surface of the groove is provided with a recess for receiving two discs. The bottom surface of the recess is provided with a middle hole for inserting the lower shaft tip of the balance shaft. The bottom surface of the recess is provided with a positioning hole for inserting a disc nail. The pendulum clamp is fixed to the test base plate and forms a cantilever above the groove. The shock absorber unit includes a shock absorber mounted on the cantilever. The lower surface of the shock absorber is provided with a socket for allowing the upper shaft tip of the balance shaft to enter the center hole of the shock absorber. The position limiting assembly includes an outer stud fixedly connected to the shock absorber and an inner clamp. The bottom of the outer stud is provided with a first slit for receiving the end of a hairspring, and the bottom of the inner clamp is provided with a second slit for receiving the outermost arc portion of the hairspring. An assembly method for the mechanical movement impact resistance testing tool is also disclosed.