73results about How to "High output torque" patented technology

The present invention discloses a gas power device, comprising an outer ring and a core body, wherein at least one-step secondary flow channel is arranged between the nozzle and the exhaust port on the outer ring surface of the core body, gas enters from the air inlet channel, is ejected step by step through the nozzle of the core body and the secondary flow channel, acts on at least two driving recesses on the circumference of the outer ring, generates thrust on these driving recesses, drives the outer ring to rotate and do work, realizes power output, and finally, the gas is discharged through the exhaust port of the core body via the exhaust channel.

The utility model discloses a single-side double-layer electric protective door for a horizontal machining center. The single-side double-layer electric protective door comprises a supporting seat, a driving mechanism, a transmission mechanism, an outer side protective door and an inner side protective door, the outer side protective door is higher than the inner side protective door, and the outer side protective door and the inner side protective door are the same in width. The driving mechanism comprises a servo motor, a speed reducer, a large driving wheel and a small driving wheel, and the tooth number of the large driving wheel is twice that of the small driving wheel; the transmission mechanism comprises a driven wheel, a long transmission belt, a short transmission belt, an outer transmission support and an inner transmission support, the long transmission belt is connected between the large driving wheel and the driven wheel, and the short transmission belt is connected between the small driving wheel and the driven wheel. The device has the advantages that the large door opening range and the small door opening and closing occupied space can be achieved, clamping of large parts and the small machine tool occupied area are guaranteed, control is easy, cost is low, installation and adjustment are easy, and the door opening range can be controlled according to the size of the parts.

The invention relates to the field of jumping robots, in particular to a hydraulically-driven two-degree-of-freedom coupling type humanoid-leg jumping robot and a control method thereof. The overall structure of the robot simulating jumping of the human legs is composed of a driving assembly, a thigh assembly and a shank assembly. The designed jumping robot is simplified into an SLIP model, a PID controller is adopted in the jumping process to achieve control over the flying phase of the jumping robot, and a PD controller is adopted in the landing phase for control. The hydraulic cylinders are far away from the legs, so that the hydraulic cylinders are driven to move to the upper body, and the whole robot has better attractiveness. And meanwhile, the lightweight design of the legs is achieved, the inertia of the legs is reduced, and the robot has more stable dynamic performance. And the vertically placed hydraulic cylinder is designed, so that the driving efficiency is further improved, and finally, more efficient bionic jumping movement is realized.

The utility model provides a low-torque pan-tilt camera device which comprises a support, a spherical groove corresponding to a spherical assembly is arranged on the support, the spherical assembly is located on the inner side of the spherical groove, a plurality of tooth grooves are formed in the outer side wall of the spherical assembly, and a plurality of clamping grooves are formed between the tooth grooves and the outer side wall of the spherical assembly. An arc-shaped rack for driving the spherical assembly to rotate is formed; a gear is fixedly arranged at the power output end of the motor, and the gear is meshed with the arc-shaped rack; the camera lens is located on the inner side of the spherical assembly. The utility model has the beneficial effects that the transmission ratio is small, that is, the output rotating speed is high, the torque is small, the shaking of the pan-tilt camera lens in the rotating process is avoided, and the transmission mechanism is suitable for high-speed and small-torque transmission application scenes.

The reciprocating piston type heat engine comprises a cylinder body, a piston, a connecting rod, a crankshaft, a lever and a compensation shaft, the piston is arranged in an inner cavity of the cylinder body, one end of the connecting rod is hinged to the piston, the crankshaft is hinged to the connecting rod, the other end of the connecting rod is hinged to the lever, and the other end of the lever penetrates through a sliding way transversely arranged on the compensation shaft. The lever can slide back and forth in the slideway of the compensation shaft. The piston thrust can be converted into output torque as much as possible, the output torque is effectively increased, and the combustion efficiency of the reciprocating piston type heat engine is improved.

The utility model provides a dual-motor joint control three-axis antenna holder, which is used for solving the problems that an existing three-axis antenna holder needs to be independently controlled by three motors, the holder is huge in structure, and the output torque cannot meet the installation requirement of a large-mass antenna. Comprising a first U-shaped mounting plate and a second U-shaped mounting plate; control motors are mounted on the inner walls of vertical plates on the two sides of the first U-shaped mounting plate correspondingly, and vertical plates on the two sides of the second U-shaped mounting plate are rotationally mounted on power output shafts of the two control motors correspondingly. And support assemblies are rotationally mounted on transverse plates of the first U-shaped mounting plate and the second U-shaped mounting plate correspondingly, and transmission assemblies are further arranged between the support assemblies and the two control motors. Through the two control motors, the support assembly and the transmission assembly, horizontal rotation, pitch angle adjustment and polarization mode adjustment of the antenna are achieved, the cradle head is compact in structure and large in output torque, and the installation requirement of the large-mass antenna can be met.

The invention relates to a double-acting pneumatic actuator which comprises an air cylinder module comprising a cylinder body assembly and a piston assembly, and the piston assembly is sequentially provided with a sealing component and a wear-resistant belt in the radial direction of the cylinder body assembly; the box body module is provided with a first end and a second end, the first end and the second end are each provided with an air cylinder module, a guide assembly and a shifting fork assembly are arranged in the box body module, and the guide assembly is used for guiding the piston assembly to move in the axial direction of the cylinder body assembly; the shifting fork assembly is used for being connected with a valve rotating shaft and converting linear motion of the piston assembly into rotating motion of the valve rotating shaft. The sealing mode of the sealing component and the wear-resistant belt is adopted on the piston assembly, the sealing component is in contact sealing with the wear-resistant belt, and the wear-resistant belt is in friction contact with the inner wall of the air cylinder for sealing, so that the service life of the sealing component can be effectively prolonged. The piston assembly operates more stably through the guide assembly, linear motion of the piston assembly is converted into rotation motion of the valve rotating shaft through the shifting fork assembly, and therefore opening and closing control over the valve is achieved.

The present invention provides an integral torsion soft robot module, comprising a soft torsion structure, wherein the soft torsion structure comprises an elastic torsion body; a top connecting plate, arranged at one end of the soft torsion structure; a bottom connecting plate, arranged at the other end of the soft torsion structure; and a driving cavity formed by the bottom connecting plate, the top connecting plate and the elastic torsion body; wherein the elastic torsion body is a hollow tubular structure, and the inner and outer wall surfaces of the elastic torsion body are respectively formed with a multi-line internal thread groove and a multi-line external thread groove. The integral torsion soft robot module of the present invention has the characteristics of simple structure, integral molding, easy processing and manufacturing, large output torque and high action execution efficiency.

The present invention discloses a segmented rotor, a motor, a compressor and an air conditioner, and relates to the technical field of heat exchange devices. The present invention provides a segmented rotor, including a first rotor structure and a second rotor structure arranged in segments, wherein the first rotor structure is provided with a magnetic steel slot structure different from the second rotor structure. The "V"-shaped magnetic steel slot structure arranged on the first rotor structure, compared with the "I"-shaped magnetic steel slot structure arranged on the second rotor structure, makes the electromagnetic force received by the first rotor structure greater than the electromagnetic force received by the second rotor structure, greatly reducing the eccentric distance of the rotor rotation, thereby reducing the vibration noise of the motor.

The present invention discloses a multifunctional food processor, comprising a machine body, a sliding member, and a driving assembly. When a user needs to use the first working position, the food processor installs a food processor cup on the first working position, so that the first power output connector is connected to the food processor cup by driving, and the food processor cup pushes the sliding member to move toward the second working position, so that the second end of the sliding member is against the food processor cup and is installed on the second working position. At this time, the user cannot install another food processor cup on the second working position. Similarly, when a user needs to use the second working position, the food processor installs the food processor cup on the second working position, so that the first end of the sliding member is against the food processor cup and is installed on the first working position. This achieves the purpose of limiting the operation to a single working position, avoids installing the food processor cup on the first working position and the second working position at the same time, avoids the rapid heating of the motor and the loss of the service life of the motor caused by the excessive load of the driving assembly, and also has the characteristics of noise reduction and silencing.

The invention discloses a steering system and a car, and relates to the technical field of car steering. The steering system comprises a wheel hub motor frame, a steering mechanism and a suspension mechanism, wherein the wheel hub motor frame is used to support the wheel hub motor; the steering mechanism comprises a driving motor, a reducer and a steering gear, wherein the output shaft of the driving motor is connected to the input shaft of the reducer, the input end of the steering gear is connected to the output shaft of the reducer, and the output end of the steering gear is connected to the wheel hub motor frame; the suspension mechanism comprises an air spring shock absorber assembly, and the air spring shock absorber assembly is connected to the output end of the steering gear through the wheel hub motor frame. The wheel hub motor frame provided in the steering system can not only support the connection between the wheel hub motor and the wheel hub, so that the wheel hub motor drives the wheel to move independently; and the steering mechanism and the suspension mechanism can be connected to the wheel through the wheel hub motor frame, so that the connection relationship between the steering mechanism and the suspension mechanism and the wheel is simple, and occupies little space.

The present invention discloses a linear motion mechanism with force control, including an output adapter, a tension and pressure sensor, a telescopic rod, a mounting flange, a sensor adjustment screw, a sensor, a ball screw, a housing, a cylindrical gear, a reducer, a motor, an input shaft, a brake, an encoder, a bevel gear, a hand crank assembly, a pointer assembly, a driver, a cable aviation plug, and an anti-rotation slider. The tension and pressure sensor is located at one end of the telescopic rod, the output adapter is located at one end of the tension and pressure sensor, the telescopic rod is located on the outside of the ball screw, the anti-rotation slider is located on the outside of the telescopic rod, and the cylindrical gear is located at the other end of the ball screw. The linear motion mechanism with force control described in the present invention increases force feedback, can read the push and pull force of the linear motion mechanism in real time, and then adjust the torque of the motor in real time to meet the control requirements, bringing better usage prospects.

The present invention provides a bending and twisting combined soft actuator, including a bending and twisting structure, which includes a bending main body, at least two bending units extending outward from the surface of the twisting unit; a top connecting plate, arranged at one end of the bending and twisting structure; a bottom connecting plate, arranged at the other end of the bending and twisting structure; an external air pipe, arranged on the bottom connecting plate; a twisting inner cavity, arranged inside the twisting unit, one end of the twisting inner cavity is closed by the top connecting plate, and the other end is connected to the external air pipe; at least two bending inner cavities are respectively arranged in two bending units, one end of the bending inner cavity is closed by the top connecting plate, and the other end is connected to the external air pipe. By using the present invention, the movement effects of bending and twisting can be achieved simultaneously under the same module, reducing the redundancy of the robot system. At the same time, the structure is simple and can be made in one piece, simplifying the control difficulty of the robot system.

The application discloses a vehicle climbing control method, system, double-clutch transmission and vehicle thereof, and comprises the following steps: determining whether the vehicle is in an uphill mode when starting on a slope; in the uphill mode, sending a request instruction for increasing an idle speed to an engine controller according to the size of a slope, an engine intake temperature and a gear position of the vehicle; when the engine speed is in an engine stall risk speed zone, activating a torque limiting function of a clutch; when the engine leaves the engine stall risk speed zone, releasing the torque limitation of the clutch. The application provides a vehicle climbing control method, system, double-clutch transmission and vehicle thereof, and the double clutch is used for climbing control of a small-torque engine or an engine with insufficient idle speed, so that the reasonable calculation of clutch required torque is ensured, the reasonable torque transmission of the clutch is ensured, and the problem of engine speed dragging or even engine stall is avoided.

The present invention discloses a pneumatic tool, comprising a housing, a gas power device and a tool group, wherein the gas power device and the tool group are both arranged on the housing, and the tool group is drivingly connected to the gas power device; the gas power device comprises: an outer ring, whose inner ring surface is circumferentially provided with a plurality of driving recesses; a core body, which is coaxially arranged in the outer ring and can rotate relative to the outer ring, and the outer ring surface of the core body is provided with at least one nozzle, at least one outlet, and at least one flushing channel between the nozzle and the outlet; at least one air inlet channel, which is connected to at least one nozzle; and at least one exhaust channel, which is connected to at least one outlet. Compared with electric tools, the pneumatic tool of the present invention has the advantage of insulation to prevent accidental electric shock, and is suitable for underwater and other occasions.

The invention relates to a manual-automatic integrated push rod electric cylinder which comprises a driving system, a hand wheel, a gearbox, a rear cover, a lead screw pair, a displacement sensor, a push rod, a linear guide rail pair and a cylinder body. The driving system comprises a motor end cover and a motor body; the gear box and the motor end cover are integrally arranged, the displacement sensor is integrated on the cylinder body, the rear cover is fixed on the motor end cover, a motor output shaft of the motor body, the gear box and the lead screw pair are sequentially in transmission connection, the push rod is respectively connected with the lead screw pair and the linear guide rail pair, and the hand wheel is connected with the motor output shaft. Compared with the prior art, the invention has the advantages of small size, large thrust, high precision and the like.

The invention provides a steering and transmission box body and a mechanical top drive drilling machine and full-hydraulic drilling machine all-in-one machine, the steering and transmission box body comprises a steering box body, a first power input end, a first power output end and a first transmission assembly, in the rotating process of the steering box body, the first power output end can directionally transmit power within a certain angle range; the all-in-one machine comprises the steering and transmission box body, and further comprises a crawler chassis, a power output assembly, a mast, a mast lifting oil cylinder, a hexagonal transmission rod and an integrated power head, and the power output assembly is arranged on the crawler chassis. The integrated power head can have two kinds of drill rod driving force through a hydraulic system pipeline, a steering box body and a transmission box body, and therefore geological deep hole exploration can be efficiently and safely completed.

The application provides a knee joint exoskeleton device and a lower limb outdoor walking aid exoskeleton robot. The device comprises: a thigh contraction connecting rod; a knee joint upper connecting rod connected to the rotating end of the thigh contraction connecting rod in a rotatable manner; a knee joint lower connecting rod connected to the other end of the knee joint upper connecting rod in a rotatable manner; and a knee joint elastic adjustment assembly having an uphill and downhill mode and a flat ground mode. The application switches to the flat ground mode when walking on the flat ground. When the leg is bent and straightened, the knee joint elastic adjustment assembly stores the flat ground elastic potential energy. When the leg is straightened and bent, the knee joint elastic adjustment assembly releases the flat ground elastic potential energy to provide power assistance. The knee joint elastic adjustment assembly switches to the uphill and downhill mode when going uphill and downhill. When the leg is straightened and bent, the knee joint elastic adjustment assembly stores the uphill and downhill elastic potential energy. When the leg is bent and straightened, the knee joint elastic adjustment assembly releases the uphill and downhill elastic potential energy to provide power assistance, which can adapt to different outdoor terrains.

The invention discloses an integrated cycloidal-pin wheel speed reducer and a regulation and control method, and particularly relates to the technical field of speed reducers. The speed reducer comprises a frameless torque motor assembly and a cycloidal-pin wheel speed reduction assembly; the frameless torque motor assembly comprises a driving unit and a motor tail supporting seat. The cycloidal-pin gear speed reduction assembly comprises a first cycloidal gear, a second cycloidal gear, a pin gear shell and an eccentric shaft. Needle teeth are mounted on the inner wall of the needle tooth shell; the driving unit is connected with the cycloidal-pin wheel speed reduction assembly through an eccentric shaft. The eccentric position of the eccentric shaft is sleeved with the first cycloidal gear and the second cycloidal gear through the first needle bearing and the second needle bearing respectively, and the pin gear shell is arranged on the surface of the first cycloidal gear and the surface of the second cycloidal gear. The first cycloidal gear and the second cycloidal gear are arranged in a 180-degree symmetrical structure. The input flange and the shell of the frameless torque motor assembly are integrally designed, the coaxiality of the input end and the output end is improved, the operation stability is improved, and therefore more space is saved on the whole.

The utility model discloses a paper bag detector, and relates to the technical field of paper bag detection equipment. The paper bag detector comprises a machine table, a first pulley, a second pulley, a tension sensor and a lead screw sliding table, the first pulley is installed on the machine table through a first installation base, the tension sensor used for detecting tension data is arranged at the side end of the installation base, and the second pulley is slidably installed on the lead screw sliding table through a second installation base. The lead screw is controlled through cooperation of the servo motor and the planetary reducer, the first pulley is rotationally installed on the first installation base, and the second pulley is rotationally installed on the second installation base. By arranging the two rotatable pulleys, the center of the paper bag handle is automatically corrected during testing, and uneven stress is prevented. The paper bag detector uses a lead screw sliding table, so that the precision is higher; the servo motor is used, so that the speed and the torque are more stable; the planetary reducer can effectively reduce the rotating speed and increase the output torque; all the structures are matched, so that no jitter problem during testing can be ensured.

The utility model discloses an electric bicycle outer rotor middle -mounting drive motor, including the casing, be provided with the rotor in the inner side of casing, be provided with permanent magnet on the inner side wall of rotor, and be provided with stator in the inner side of rotor, be provided with copper wire winding group on the stator, still be provided with gear set in the inner side of casing, gear set interrelated setting in the side of rotor, the utility model sets up gear set, and gear set includes the internal gear and planetary nylon wheel, and simultaneously internal gear is linked with the casing, and planetary nylon wheel is linked with sun gear, can drive planetary nylon wheel rotation under the condition that rotor rotates, under the condition that wheel speed ratio increases, and then increase the output torque of output main shaft, and the low -speed start of electric bicycle is convenient, set up transmission board, and a plurality of planetary nylon wheels are installed through bearing and are connected in the support shaft of transmission board, and simultaneously transmission board is set on output main shaft, therefore, can control output main shaft rotation under the action of transmission board, realizes the transmission of power.

The present invention discloses a motor with manual and electric clutch devices, including a motor body, a motor output shaft and a clutch arranged in the motor body, the clutch mounted on the motor output shaft, the clutch comprising a cam ring, an axial clutch rod, a clutch sleeve and an output sleeve, a speed reduction mechanism mounted on the clutch arranged in the motor body, the speed reduction mechanism consisting of a worm gear and a worm, and a manual device and a rope-controlled clutch switch arranged outside the motor body. The present invention solves the problem that the motor cannot be operated urgently when the power is off or the power is cut off, and the motor is operated by a manual device, and has the characteristics of saving manpower, large output torque, self-locking and greater safety.

The utility model belongs to the technical field of mechanical transmission, and discloses a multi-shaft synchronous transmission mechanism which comprises a fixed seat, a driving shaft, a shell and at least two transmission shafts, the driving shaft is rotationally connected with the fixed seat, the output end of the driving shaft penetrates through the fixed seat and is connected with a main fluted disc, and main insections are arranged on the end face of the main fluted disc. An auxiliary fluted disc which is parallel to the main fluted disc and located on the same central axis with the main fluted disc is arranged on the fixing base, auxiliary insections opposite to the main insections in direction are arranged on the end face of the side, close to the main fluted disc, of the auxiliary fluted disc, and at least two transmission shafts are located between the main fluted disc and the auxiliary fluted disc and distributed in a circumferential array mode. Each transmission shaft is provided with transmission insections meshed with the main insection and the auxiliary insection, and the shell is arranged outside the main fluted disc and the auxiliary fluted disc and rotationally connected with the output end of the driving shaft. The single-input multi-shaft output transmission mechanism realizes single-input multi-shaft output and is compact in structure, radial run-out of the transmission shaft is effectively reduced, the transmission mechanism runs more stably, the transmission efficiency is improved, and the manufacturing cost is reduced.

The invention discloses a superconducting disc motor, wherein the stator comprises a stator shell and a stator core; the rotor comprises a rotor shaft; the stator core comprises a wedge-shaped core body formed by stacking oriented silicon steel; a superconducting coil is wound between the two ends of the wedge-shaped core body; a plurality of stator cores are distributed and rotated about an axis parallel to the direction of the magnetic field thereof and arranged in a disc shape; the stator cores arranged in a disc shape are coaxially embedded in the stator shell; a rotor back iron shell is coaxially sleeved on the hollow rotor shaft, and a copper heat-conducting component is included in the hollow rotor back iron shell; the copper heat-conducting component comprises a columnar end parallel to the rotor axis, and the columnar end is arranged in a circular ring along the rotor rotation direction; a superconducting coil is wound on the columnar end extending from the rotor back iron shell to the outside of the rotor back iron shell; the outer shell comprises a cooling gas / liquid circuit, and the cooling circuit cools the hollow cavity in the potted stator; a cooling gas / liquid circuit is included in the rotor back iron shell, and the rotor shaft is a hollow shaft.

The gantry machining equipment comprises a mounting base, a gantry frame, a workbench, a positioning device, a first linear driving device, a second linear driving device, a data processor and a control center. The portal frame is mounted on the mounting base; the workbench is mounted on the mounting base; the positioning device is arranged on the portal frame; the driving end of the first linear driving device is mounted on the mounting base, and the output end of the first linear driving device is in driving connection with the portal frame; the driving end of the second linear driving device is mounted on the mounting base, and the output end of the second linear driving device is in driving connection with the workbench; the data processor is arranged on the portal frame; the data processor is electrically connected with the positioning device; the control center is arranged on the mounting base; the control center is electrically connected with the data processor, the first linear driving device and the second linear driving device so that the relative position of the portal frame and the workbench can be controlled and adjusted according to detection signals of the positioning device, and therefore the early-stage workpiece positioning speed is increased, and the overall machining efficiency is improved.

This invention discloses a pilot-operated, pressurized, bidirectional overflow valve structure, relating to the field of overflow valve technology. It includes a valve seat and a valve sleeve. The valve seat surface has a valve port one, and the valve sleeve surface has a valve port two. A main valve core and a pilot valve core are slidably disposed within the valve sleeve, with the pilot valve core slidably disposed within the main valve core. A pressure acquisition module and an intelligent pressure regulating module are jointly disposed within the valve seat and valve sleeve. The intelligent pressure regulating module includes a pressure regulating verification unit. It reduces the number of valve bodies and lowers production costs through bidirectional independent overflow. Furthermore, the intelligent pressure regulating module, combined with flow and temperature factors, real-time corrects the overflow threshold and drives an adjusting rod two to adjust the pressure regulating spring. The combined force of the buffer spring and the pressure regulating spring determines the final opening pressure, increasing the output torque of the hydraulic motor and solving the problem of insufficient power under high loads. Based on the measured position, velocity, and acceleration of the main valve core, it predicts future displacement and compares it with the measured values ​​to determine anomalies, achieving an early warning effect for faults.

The utility model relates to big displacement batch mixing equipment stirring device, its characterized in that: contain stirring motor, bearing seat, connecting shaft, stirring shaft, stirring vane assembly, agitator support, stirring motor is connected with the bearing seat below its through bolt, bearing seat and its below connecting shaft are connected through bearing cooperation, the output shaft of stirring motor passes through bearing seat and then is connected with connecting shaft through spline cooperation, connecting shaft is connected with the stirring shaft bolt below its, be provided with a plurality of stirring vane assembly on stirring shaft, stirring vane assembly is connected with stirring shaft bolt, the end of stirring shaft is provided with agitator support, stirring shaft is connected with agitator support bolt. The utility model has improved batch mixing equipment stirring efficiency, especially under the stirring effect of big displacement, can make batch mixing equipment give consideration to oilfield actual working condition namely can continuously again batch mixing and cement slurry, has improved oilfield site cementing effect greatly.

The hydraulic walking system comprises an oil tank, an oil supplementing pump, a plunger pump assembly and a motor assembly, the plunger pump assembly comprises a plunger pump and a plunger pump adjusting assembly, the motor assembly comprises a motor and a motor adjusting assembly, the displacement of the plunger pump is controlled through the plunger pump adjusting assembly, and then the rotating speed of the motor is changed. The motor displacement is adjusted through the motor adjusting assembly, and the rotating speed of the motor is further adjusted. According to the hydraulic walking system and the crawler operation machine, parking gear shifting and extra gear shifting operation are not needed during transition acceleration, continuous change of motor displacement is achieved, and therefore stepless speed change of the walking speed is achieved; meanwhile, gear shifting operation in the advancing process is prevented, large pressure change caused by two-point displacement change of the motor in the advancing process is avoided, impact on a control valve set and the motor is reduced, and the service life is prolonged.

The invention discloses an incongruous light cone flat gear box, and relates to the technical field of extruder screw transmission gears, the incongruous light cone flat gear box comprises a first transmission box output shaft rotationally arranged in the gear box, the first transmission box output shaft is fixed with an output long shaft, and one end, far away from the first transmission box output shaft, of the output long shaft is connected with a screw; a second transmission box output shaft is also rotationally arranged in the gear box; a power transmission module used for synchronously driving the first transmission box output shaft and the second transmission box output shaft to rotate is further arranged in the gear box. One end, far away from the power transmission module, of the output shaft of the second transmission case is fixed with a first variable-thickness bevel gear shaft, the other end of the first variable-thickness bevel gear shaft is fixed with a second variable-thickness bevel gear shaft, and the first variable-thickness bevel gear shaft and the second variable-thickness bevel gear shaft form a group of herringbone tooth gear pairs; no gear is arranged on the output long shaft, so that the occupied space of the output center distance can be reduced, and the output torque is further increased.