36results about How to "Realize the deceleration effect" patented technology

The invention provides a high-reliability bolt tightening system. The high-reliability bolt tightening system is characterized in that a mechanical arm is connected with one end of a front arm, the other end of the front arm passes through a connecting part, the connecting part is further connected with one end of an arc arm, the other end of the arc arm is connected with a rotating disc, the rotating disc is connected with a base, a groove is formed in the bottom of the base, the groove is arranged in a sliding rail in a sedimentation manner, a fastening device is arranged at the head of the mechanical arm, a bolt sleeve is obtained through the fastening device, and a bolt is tightened on the corresponding component through the sleeve. According to the system, bolt tightening operation can be finished through angle adjustment, corresponding operation is carried out through the fastening device, and the system is safe and convenient.

The invention discloses an exploration support, an exploration device and an exploration method used for detection geology of surrounding rocks of a roadway. The exploration device comprises a laser range finder, an LTD ground penetrating radar and an exploration support. The exploration support comprises a movable support, an axially rotating support, a radially rotating support and a driving device. The axially rotating support is arranged on and is in rotating fit with the movable support. The radially rotating support crosses the axially rotating support. The radially rotating support is telescopic along the axial direction itself. The driving device drives the axially rotating support and the radially rotating support to rotate. Compared with the prior art, the exploration support, the exploration device and the exploration method are advantageous in that continuous and precise exploration can be performed on the cross section of the roadway and detection results can be precisely positioned, thereby facilitating formation of a precise and effective three-dimensional geology variation diagram of the surrounding rocks of roadway in the region.

The invention relates to the technical field of oil extraction machinery, in particular to an automatic speed-changing wide-swing-angle oil pumping machine. The automatic speed-changing wide-swing-angle oil pumping machine comprises an electric motor, a speed changing mechanism, a swing arm support, a swing arm arranged on the swing arm support, a support provided with a fixed pulley and a wellhead oil pumping device, wherein the speed changing mechanism is connected with a driving crankshaft wheel, the driving crankshaft wheel is meshed with a driven crankshaft wheel, the driving crankshaft wheel is connected with a connecting piece through a bearing, one end of the connecting piece is connected with the driven crankshaft wheel, the other end of the connecting piece is connected with the swing arm through a connecting rod, a sliding chute is arranged on the connecting piece of which one end is connected with the driven crankshaft wheel, and a bearing on the driven crankshaft wheel is sleeved in the sliding chute. The automatic speed-changing wide-swing-angle oil pumping machine disclosed by the invention has the advantages that when the two crankshaft wheels are in rotation, since the position of the bearing of a driven pulley is changed, the position of the connecting piece can be also correspondingly changed, a motion trail of the connecting rod is affected by the motion of the connecting piece, the speed of the wellhead oil pumping device in the up-stroke is higher than that in the down-stroke, the oil leakage problem existing in an oil pumping process is avoided, and the oil pumping efficiency is increased.

The invention discloses a novel height adjustable square speed bump which comprises a base. A groove is formed in the base, a connecting column is fixedly connected to a bottom position in the base, the connecting rod is arranged in the groove, a non-Newton fluid shock absorbing ball is arranged in the connecting column, a transverse pressure plate is arranged at the upper end of the non-Newton fluid shock absorbing ball, a push rod is fixedly connected to the upper surface of the transverse pressure plate, a mounting plate is fixedly connected to the upper end of the push rod, a square speedbump main body is fixedly connected to the upper surface of the mounting plate, two oblique columns are rotatably connected to the bottom position in the base through a rotating shaft, chutes A are formed in the upper surfaces of the two oblique columns, a lower supporting column is slidably connected in each chute A, and an upper supporting column is arranged above the lower supporting column. The height of the novel height adjustable square speed bump can be changed, so that people feel more comfortable when an automobile passes through the novel height adjustable square speed bump, and thenovel height adjustable square speed bump is reasonable in design and long in service life.

The invention belongs to the technical field of waste gas treatment, and discloses a waterproof roll production workshop waste gas treatment device and a treatment process thereof. The treatment device comprises: a gas collection device, a pretreatment device, a speed reduction device and an adsorption device which are sequentially arranged in a waste gas circulation direction; the speed reductiondevice comprises a flow dividing buffer assembly, the shunting buffer assembly comprises a gas-guide tube, and a first flow dividing tube and a second flow dividing tube which are connected to one side of the gas-guide tube; the gas-guide tube is connected with the top of the pretreatment device, the flow dividing ratio of the first flow dividing tube to the second flow dividing tube is 1:4-2:3,the gas outlet end of the first flow dividing tube is bent to form a bent part, and the outlet end of the bent part faces the second flow dividing tube to form opposite gas outlet of the first flow dividing tube and the second flow dividing tube; in conclusion, based on the arrangement of the flow dividing buffer assembly, flow dividing and guiding of the waste gas are achieved, the waste gas after flow dividing forms flow velocity offset in an opposite guiding mode, and therefore, the speed reduction effect of the waste gas is effectively achieved.

The invention relates to the technical field of data collection, and discloses a wind power generation wind speed data detection device based on friction braking. The wind power generation wind speeddata detection device based on friction braking comprises a main frame, wherein driving fans are rotatably connected to the left and right ends of the main frame; and rotating shafts are rotatably connected to the left and right ends of the interior of the main frame. According to the device, when the rotating speed of the driving fan is increased, the wind speed on the outer surface of the main frame and near the driving fan is increased, and according to the Bernoulli's principle, the air pressure in the place with the large air flow speed is small, so that the air pressure in the main frameis larger than the air pressure at the driving fan, and air in the main frame extrudes an arc-shaped plate to the main frame; and under the action of a capacitor plate and an electrode plate, the driving rod electrically connected with the capacitor plate and the electrode plate starts to work and drives a screw rod to rotate, the screw rod drives a moving block to move downwards, an extrusion rod gets close to an extrusion wheel, and the rotating speed of the extrusion wheel is changed by increasing a friction force between the extrusion wheel and a speed reduction wheel, so that a speed reduction effect is achieved.

The invention discloses a harmonic transmission speed reducing mechanism. The mechanism comprises a wave generator, a flexible gear, a connecting pin, a rigid gear and an output plate, wherein an accommodating space capable of accommodating the wave generator and the flexible gear is arranged in the rigid gear in an up and down penetrating mode, the wave generator comprises a cam and a cam shaft bearing connected on the outer side of the cam in a sleeving mode, the flexible gear is connected to the outer side of the cam shaft bearing in a sleeving mode, an outer gear ring of the flexible gearis meshed with an inner gear ring of the rigid gear, a set of kidney-shaped grooves are uniformly distributed on the surface of the output plate along the axis, eccentric vertical wheels are arrangedin the kidney-shaped grooves, eccentric holes used for accommodating one end of the connecting pin to be inserted and fixed is formed in the top of the eccentric vertical wheels, connecting convex columns corresponding to the eccentric vertical wheels are distributed on the inner side wall of the flexible gear along the axis, the connecting convex columns are provided with connecting inserting holes used for accommodating the other end of the connecting pin to be inserted and fixed, and the connecting pin, the connecting convex columns and the eccentric vertical wheels are connected and matched with each other, so that the flexible gear and the output plate form a synchronous connection motion.

The invention discloses an unpowered roller line, and relates to the technical field of logistics conveying. The unpowered roller line comprises two parallel first frame plates; a second frame plate is arranged at one end of each first frame plate, and a third frame plate is arranged at the end, away from the corresponding first frame plate, of each second frame plate; a plurality of rollers are rotationally connected between the inner sides of the two first frame plates in the length direction of the first frame plates, between the inner sides of the two second frame plates in the length direction of the second frame plates and between the inner sides of the two third frame plates in the length direction of the third frame plates; each second frame plate is formed by sequentially splicing a straight line section I, an arc section I, an arc section II and a straight line section II; the arc section I is tangent to the linear section I, the arc section II is tangent to the linear section II, and the arc section I is also tangent to the arc section II; and the top and the bottom of the linear section I are flush with the tops and the bottoms of the first frame plates correspondingly. The unpowered roller line has the beneficial effects that objects can be conveyed conveniently, and accumulation, falling and the like of the objects in the conveying process are reduced.

The invention discloses a coaxial central motor which comprises a machine shell, a middle shaft, a stator assembly, a rotor assembly, a speed change module and a clutch module. The stator assembly, the rotor assembly, the speed change module and the clutch module are located in the machine shell. The stator assembly is sleeved with the rotor assembly and connected to the machine shell, the middleshaft penetrates through the stator assembly, the rotor assembly, the speed change module and the clutch module, the speed change module is connected with the rotor assembly, the clutch module is connected with the middle shaft and the speed change module, and the middle shaft penetrates through the machine shell and stretches out of the machine shell. Through the above design, the axis of the stator assembly, the axis of the rotor assembly, the axis of the speed change module and the axis of the middle shaft coincide, the whole transmission process is simple, mechanical losses in the power output transmission process are small, and abrasion is not likely to be caused. The motor is low in noise during operation, and the service life of the motor is prolonged.

The invention discloses a ring wing unmanned aerial vehicle, comprising a ring wing, a tail wing, a left task compartment, a right task compartment, a left fuselage connecting device, a right fuselageconnecting device, a left propeller, a right propeller and a power device. The power device comprises a left power device and a right power device. The left fuselage connecting device and the right fuselage connecting device are identical in structure and each includes a fuselage connecting rod and a fuselage case. According to the invention, the annular wing and double propeller structure is adopted, so that the unmanned aerial vehicle can realize vertical take-off and landing, the ring wing unmanned aerial vehicle has the characteristics of long flight time, long flight distance, high flight speed, strong wind resistance and the like, unfolding wings are also arranged on the ring wing of the unmanned aerial vehicle, so that the ring wing has high operability and flexible in turning.

The invention relates to the technical field of brakes, in particular to a normally closed type brake with a flexible decelerating function. The brake comprises a braking part, a braking housing, a braking pull rod, a braking spring, an adjusting push rod, an adjusting spring and a force applying device. The flexible decelerating function of the brake is achieved by combining the braking spring and the adjusting spring. An adjusting force applied by the adjusting push rod can be adjusted at a force applying end of the force applying device in a stretching process, the adjusting force is applied to the braking spring to weaken a braking force generated by the braking spring, and the residual elastic force of the braking spring is a needed braking force. The process can be changed anytime according to actual conditions, that is, the process is a forming process of the flexible braking force. By matching the braking spring, the adjusting spring and the force applying device in use, the braking force can be applied at any proportion (100% to 0% or 0% to 100%) in the braking process, so that a needed decelerating effect is achieved, a flexible braking effect is achieved, and impact to an operating system is reduced.

The invention discloses a prospecting device with an automatic telescoping mechanism, and the device comprises a laser ranging instrument, an LTD ground penetrating radar and a prospecting support. The prospecting support comprises a mobile support, an axial direction rotation support, a radial direction rotation support and a driving device. The axial direction rotation support is arranged on the mobile support and is in rotary cooperation with the mobile support. The radial direction rotation support and the axial direction rotation support from a cross. The radial direction rotation support can telescope along with its own axial direction. The driving device drives the axial direction rotation support to rotate and brings the radial direction rotation support to rotate. According to the invention, a prospecting device with an automatic telescoping mechanism is provided, and the device utilizes the propelling force of a cylindrical spring to make a receiving-and-emitting antenna and the inner wall of a roadway in close contact; and at the same time, through the utilization of the telescopic rod for free telescoping, the device enables the equipment to fit the shapes and dimensions of different roadway sections, therefore, making the prospecting device more universal in use.

The invention provides a steering locking mechanism, which is applied to a vehicle; the vehicle is bicycle or electric bicycle; the vehicle comprises a front steering wheel and a frame, wherein the front end of the frame is rotationally connected with the front steering wheel; the steering locking mechanism comprises an electric faucet lock and at least one lock block; the electric faucet lock is fixedly arranged at the frame, and comprises a lock box; a motor and a lock tongue in driving connection with the motor are arranged in the lock box; the motor is connected with the controller, and the controller can control the motor to drive the lock tongue to extend out or retreat back in relative to the lock box according to the received operation command; at least one lock block is fixedly arranged at the front steering wheel, and at least one lock hole matched with the lock tongue is arranged on the lock block, wherein the front end of the lock tongue can be inserted to any one lock hole when the lock tongue is extended out in relative to the lock box, thus the front steering wheel is limited to rotate in relative to the frame. Through the technical plan, the front steering device of the vehicle is fixed, and the vehicle anti-theft performance is improved; meanwhile, the automatic locking and unlocking can be realized; the steering locking mechanism is convenient to operate, stable and reliable.

The invention relates to the technical field of brakes, in particular to a normally closed brake with a flexible deceleration function. The brake includes a brake part, a brake housing, a brake pull rod, a brake spring, an adjustment push rod, an adjustment spring and a force applying device. The flexible deceleration function of the brake is realized by the combination of the brake spring and the adjustment spring. The force end of the force application device can adjust the adjustment force applied by the adjustment push rod during the expansion and contraction process. The adjustment force is applied to the brake spring to weaken the brake spring. The braking force and the remaining elastic force of the brake spring are the braking force to be obtained. This process can be changed at any time according to the actual situation, which is the formation process of flexible braking force. Through the combined use of the braking spring, the adjusting spring and the force applying device, the braking force can be applied arbitrarily (100% to 0 or 0 to 100%) during the braking process to achieve the required deceleration effect and realize the flexible braking. Effect, reducing the impact on the operating system.

The invention discloses a non-powered roller line, which relates to the technical field of logistics transportation. It includes two first shelves arranged parallel to each other, one end of each first shelf is respectively provided with a second shelf, and the end of each second shelf away from the first shelf is respectively provided with a third shelf; Between the insides of the two first shelves along the length direction of the first shelf, between the insides of the two second shelves along the length direction of the second shelf, between the insides of the two third shelves along the length of the third shelf The length direction of the plate is rotated separately to connect multiple rollers; the second shelf plate is composed of straight line segment I, arc segment I, arc segment II and straight line segment II; the arc segment I is tangent to the straight line segment I , the arc segment II is tangent to the straight segment II, and the arc segment I and the arc segment II are also tangent; the top and bottom of the straight segment I are respectively flush with the top and bottom of the first shelf, The present invention has the advantages of facilitating the transportation of articles, reducing the accumulation and falling off of articles during the transportation process.

The invention discloses a direct-current speed reduction motor with multiple stages of speed reduction gears. The direct-current gear motor comprises a motor body, one side of the motor body is fixedly connected with a mounting end cover, one side of the mounting end cover is provided with a gear box, the output end of the motor body is fixedly connected with a first rotating shaft, and the outersurface of the first rotating shaft is fixedly connected with a gear; and a second rotating shaft and a third rotating shaft are rotatably connected to one side of the mounting end cover, a first reduction gear is fixedly connected to the outer surface of the second rotating shaft, the gear is engaged with the first reduction gear, and a second reduction gear is fixedly connected to the outer surface of the third rotating shaft. According to the direct-current speed reduction motor with the multi-stage speed reduction gears, by arranging a lifting ring, when the speed reduction motor needs tobe moved, the speed reduction motor can be lifted through the lifting ring, meanwhile, a set of universal wheels are arranged, so that the motor replaces carrying with sliding, output of labor force is reduced, and the speed reduction motor becomes diversified in the moving process.

The invention relates to the technical field of tank bodies of water tank trucks, and discloses a separated linkage flow guide type tank body of a water tank truck. The separated linkage flow guide type tank body of the water tank truck comprises a tank body, transverse protection plates are fixedly installed on the inner walls of the front side and the rear side of the interior of a cavity of the tank body, two sets of parallel partition plates are fixedly installed between the inner walls of the front side and the rear side in the middle of the interior of the cavity of the tank body, two sets of side edge flow distribution mechanisms are arranged between the transverse protection plates and the partition plates, and two sets of middle flow guide mechanisms are arranged between the two partition plates. According to the separated linkage flow guide type tank body of the water tank truck, the side edge flow distribution mechanisms are arranged, when an inertial motion water body located between the partition plates and the front side wall face of the tank body impacts the side edge flow distribution mechanisms, the inertial motion water body is separated and circulated through the three sets of flow distribution partition plates, the three sets of flow distribution partition plates achieve the flow distribution effect on the inertial motion water body, the motion speed of the water body in the cavity of the tank body under the inertial effect is reduced, the stability of the water body stored in the tank body is improved, and the stability of the water body delivered in the cavity of the tank body is improved.

The invention relates to the technical field of screw air compressor protection, and discloses screw air compressor protection equipment based on the Faraday principle. The screw air compressor protection equipment comprises an air compressor body, the left side of the air compressor body is fixedly connected with an air outlet, the right side of the air compressor body is fixedly connected with an air inlet, the right side in the air compressor body is fixedly connected with a filter through the air inlet, and the filter is fixedly connected with a screw host through an air guiding pipe. According to the screw air compressor protection equipment based on the Faraday principle, eccentric vibration is generated through long-time operation of a transmission shaft, the transmission shaft transmits eccentric vibration to pole-changing rings, thus the pole-changing rings finally make contact with negative current contacts, at the moment, magnetic poles of the pole-changing rings display N poles under the action of the negative current contacts, thus the polarity of the pole-changing rings and the polarity of magnetic pole plates generate an opposite attraction effect, speed reduction pieces makes contact with the transmission shaft under the action of connecting rods to realize a speed reduction effect, thus accumulation of rotor heat is reduced, and a motor of an air compressor isprotected.

The invention relates to the technical field of oil extraction machinery, in particular to an automatic speed-changing wide-swing-angle oil pumping machine. The automatic speed-changing wide-swing-angle oil pumping machine comprises an electric motor, a speed changing mechanism, a swing arm support, a swing arm arranged on the swing arm support, a support provided with a fixed pulley and a wellhead oil pumping device, wherein the speed changing mechanism is connected with a driving crankshaft wheel, the driving crankshaft wheel is meshed with a driven crankshaft wheel, the driving crankshaft wheel is connected with a connecting piece through a bearing, one end of the connecting piece is connected with the driven crankshaft wheel, the other end of the connecting piece is connected with the swing arm through a connecting rod, a sliding chute is arranged on the connecting piece of which one end is connected with the driven crankshaft wheel, and a bearing on the driven crankshaft wheel is sleeved in the sliding chute. The automatic speed-changing wide-swing-angle oil pumping machine disclosed by the invention has the advantages that when the two crankshaft wheels are in rotation, since the position of the bearing of a driven pulley is changed, the position of the connecting piece can be also correspondingly changed, a motion trail of the connecting rod is affected by the motion of the connecting piece, the speed of the wellhead oil pumping device in the up-stroke is higher than that in the down-stroke, the oil leakage problem existing in an oil pumping process is avoided, and the oil pumping efficiency is increased.

The invention discloses an explosion proof type vehicle running prevention blocking device based on energy conversion. The device comprises a fixed base and an arresting cable device arranged on the fixed base; a brake steel wire rope on the arresting cable device is connected with a vehicle, and when the vehicle speed is out of control, emergency brake is provided; an explosion proof type energyabsorbing device is arranged in the arresting cable device, and through the explosion proof type energy absorbing device, kinetic energy of the vehicle can be converted into internal energy. The blocking device can be applied to various vehicles under the coal mine, the stable blocking brake force is provided for the vehicles with speed out of control, the phenomenon that the speed of the vehiclesunder the coal mine is out of control is effectively avoided, the reasonable protection measure is provided for out-out-control speed of the vehicles under the coal mine, the coal transportation vehicle safety situation is optimized, the vehicle safety property is improved, operation safety coefficient of the vehicles is improved, and the mine system safety is improved.

The invention discloses a high-safety snowboard for training, and relates to the technical field of skiing training equipment. The skateboard comprises a skateboard body which is provided with a deceleration control device. The deceleration control device is composed of a speed measurement assembly, a speed reduction assembly and a storage battery. The storage battery supplies power to the speed measuring assembly and the speed reduction assembly. The speed measurement assembly comprises a photoelectric speed measurement module mounted on the upper side of the skateboard body; the photoelectric speed measurement module comprises walking wheels rotationally connected to the rear end of the skateboard body; the axial direction of the walking wheels is the left-right direction; reflection blocks are fixed at the left ends of the walking wheels; reflective surfaces are arranged on the front sides of the reflection blocks; a photoelectric rotating speed sensor is fixed at the upper rear part of the skateboard body; a probe of the photoelectric rotating speed sensor corresponds to the reflective surfaces; and the photoelectric rotating speed sensor is connected with a control circuit. The snowboard has the advantages that the skiing speed can be effectively controlled, dangers caused by too high skiing speed are avoided, and meanwhile, adverse effects on skiing training are reduced.

The invention relates to the technical field of optical fiber manufacturing, and discloses a constant-speed winding device for optical fiber manufacturing. The device comprises a driving disc, connecting plates are welded to the outer side of the driving disc, a locking disc is welded to the outer sides of the connecting plates, a device disc is rotationally connected to the front face of the driving disc, trigger mechanisms are arranged on the front face of the driving disc, and locking mechanisms are arranged on the front face of the device disc; and circle centers of the driving disc, the locking disc and the device disc are located on the same straight line. According to the constant-speed winding device for optical fiber manufacturing, through matched use of the driving disc and the trigger mechanisms, when the winding speed of an optical fiber is too high, contact blocks can be in contact with contacts, so that the locking mechanisms are started; and through matched use of driving shafts and sliding blocks, when the driving shafts rotate, the sliding blocks move, under hinging of support rods, brake blocks are pushed to be in contact with the inner side of the locking disc, so that the speed reducing effect is achieved, constant-speed winding work is guaranteed, further, the optical fiber manufacturing efficiency is improved, and economic loss caused by optical fiber breakage is avoided.

The invention relates to the technical field of cranes, and discloses a winding rope anti-stall device used for a vehicle-mounted crane. The winding rope anti-stall device comprises a lifting arm anda rolling shaft, wherein the outer part of the lifting arm is fixedly connected to a fixed base; a slide rail I is fixedly connected outside the fixed base; a slide rod is movably connected inside theslide rail I; and the outer part of the slide rod is movably connected to a connecting rod. Under mutual action of the lifting arm, the rolling shaft, the fixed base, the slide rail I, the slide rod,the connecting rod, a pressure plate, a pressure block and a hydraulic rod, the rolling shaft will have stall rotation under motion of a winding rope if the winding rope is broken or the crane failswhile the vehicle-mounted crane lifts goods, so that a reduction brake plate is in contact with the winding rope under action of an induction structure, and the winding rope reduction effect can be realized under action of the reduction brake plate, and thus, unnecessary property loss caused by stall motion of the winding rope and the goods as well threat on safety of staff are avoided.

The invention relates to the technical field of elevator use, and discloses a stall protection device for a vertical lifting elevator, which comprises a car body and two guide rail plates with a guiding function, and the guide rail plates are sleeved with speed reducing mechanisms; the speed reducing mechanism comprises connecting rods connected to the two sides of the guide rail plate in a sliding mode, and rotating wheels rotating on the side wall of the guide rail plate are arranged on the outer sides of the connecting rods. According to the protection device, when the compartment body stalls, the compartment body and the whole speed reducing mechanism can quickly move on the guide rail plate, the rotating wheels can rotate on the outer wall of the guide rail plate, the rotating speed can be increased, the stall sensing device works under the action of the rotating shaft when the speed reaches a set value, the telescopic rod is started to work, and the telescopic rod can be inserted into the limiting hole, so that the stall is prevented from being damaged. Therefore, the friction wheel stops rotating, the friction wheel and the wedge-shaped groove are in sliding connection instead of rotating connection, friction force is increased, the speed reduction effect can be achieved, and the safety problem caused by stall is effectively avoided.

The invention provides a fence device. The fence device comprises a frame, a mounting seat and a supporting structure, the mounting seat is detachably connected to the frame, and the mounting seat is arranged at the bottom of the frame and is perpendicular to the frame; the supporting structure is detachably connected to a mounting base, and the supporting structure extends in the direction away from the mounting base; and the mounting seat and / or the supporting structure are / is propped against the ground. According to the fence device, the supporting structure matched with the mounting base is arranged, so that the fence device has better placement stability, meanwhile, the speed reduction effect on a vehicle can be achieved, the structure is simple, and the using effect is good.

The invention discloses a speed reduction worm gear device for agricultural machine gear transmission, and relates to the technical field of agricultural machines. The speed reduction worm gear devicefor the agricultural machine gear transmission aims to solve the problem of insufficient transmission directions of a speed reduction worm gear device for common agricultural machine gear transmission in the prior art. A first output shaft is installed on the front end face of the speed reduction worm gear device and rotationally connected with the speed reduction worm gear device through a bearing, a second bearing seat is installed on one side of the speed reduction worm gear device, and the second bearing seat is fixedly connected with the speed reduction worm gear device through a sealingscrew. A second output shaft is installed on one side of the speed reduction worm gear device, the second output shaft is rotatably connected with the second bearing seat through a bearing, a third bearing seat is installed above the speed reduction worm gear device, and the third bearing seat is fixedly connected with the speed reduction worm gear device through a sealing screw. A third output shaft is mounted above the speed reduction worm gear device, and the third output shaft is rotatably connected with the third bearing seat through a bearing.

The invention discloses an explosion proof type vehicle running prevention blocking device based on energy conversion. The device comprises a fixed base and an arresting cable device arranged on the fixed base; a brake steel wire rope on the arresting cable device is connected with a vehicle, and when the vehicle speed is out of control, emergency brake is provided; an explosion proof type energyabsorbing device is arranged in the arresting cable device, and through the explosion proof type energy absorbing device, kinetic energy of the vehicle can be converted into internal energy. The blocking device can be applied to various vehicles under the coal mine, the stable blocking brake force is provided for the vehicles with speed out of control, the phenomenon that the speed of the vehiclesunder the coal mine is out of control is effectively avoided, the reasonable protection measure is provided for out-out-control speed of the vehicles under the coal mine, the coal transportation vehicle safety situation is optimized, the vehicle safety property is improved, operation safety coefficient of the vehicles is improved, and the mine system safety is improved.

The invention discloses an automatic speed reducing wheel of a forklift. The automatic speed reducing wheel comprises a wheel body, a wheel axle and wheel spokes; the wheel spokes are fixed on two sides of the wheel body, and the wheel axle is fixed at the axle center of the wheel spokes; two positioning columns are symmetrically fixed on the surface of a central ring of the wheel spokes; centrifugal swing rods are rotatably connected to the ends, far away from the central ring of the wheel spokes, of the positioning columns through rotating shafts; a primary speed reducing mechanism facilitating preliminary speed reduction on the wheel body is arranged on the surface of the wheel axle and on one side of the wheel spokes, and a secondary speed reducing mechanism facilitating further speedreduction on the wheel body is arranged on the side, far away from the centrifugal swing rods, of the primary speed reducing mechanism; and a one-way bearing is fixed on the surface of the side, far away from the centrifugal swing rods, of the wheel axle. According to the automatic speed reducing wheel of the forklift, kinetic energy is provided for the primary speed reducing mechanism and the secondary speed reducing mechanism under the centrifugal action of the centrifugal swing rods, and the speed reducing effect with different effects on the wheel body is realized through the cooperative action of the primary speed reducing mechanism and the secondary speed reducing mechanism.