73results about How to "Shorten the installation distance" patented technology

The invention discloses a double-drum washing machine, which comprises a washing machine frame, a first outer drum and a second outer drum, wherein the first outer drum and the second outer drum are arranged in the frame; the first outer drum and the second outer drum are integrally provided with balancing weight mounting columns used for mounting balancing weights; the first outer drum and the second outer drum are connected into a whole through a connecting piece; the connecting piece is fixedly connected with the balancing weight mounting columns on the first outer drum and / or the second outer drum. According to the double-drum washing machine disclosed by the invention, the first outer drum and the second outer drum are connected into an integral structure through the connecting piece so as to effectively improve the compactness of the washing machine; the connecting piece is fixedly installed and connected through the balancing weight mounting columns on the first outer drum or the second outer drum so as to increase the stability of the washing machine; moreover, a shared balancing weight is provided for the first outer drum and the second outer drum through the connecting piece; furthermore, the shared balancing weight is used by the first outer drum and the second outer drum, and the first outer drum or the second outer drum of the washing machine is used as at least one part of balancing weight of the second outer drum or the first outer drum, so that the two drums of the washing machine have an obvious damping effect, and the production cost is reduced.

The invention discloses a double-drum washing machine, which comprises a washing machine frame, a first outer drum and a second outer drum; the first outer drum and the second outer drum are arranged in the frame; the first outer drum is provided with a first balancing weight; the second outer drum is provided with a second balancing weight; the first balancing weight and the second balancing weight are connected so as to enable the first outer drum and the second outer drum to be connected into a whole. According to the double-drum washing machine disclosed by the invention, the first outer drum and the second outer drum are connected through the respective balancing weights, and therefore the two outer drums are connected into a whole and the compactness of the washing machine is effectively improved; the double-drum washing machine is simple in structure and convenient to assemble; more particularly, after the two outer drums are connected into a whole, the damping effect is remarkable, and the work noise is reduced; the double-drum washing machine disclosed by the invention is simple in structure, remarkable in effect and suitable for being popularized and used.

The invention discloses an air intake control device of an engine and the engine therewith, relates to the technical field of engines, and aims to solve the problems that as the area of the air intake cross section of the air intake manifold can not be controlled efficiently in the prior art, the variable control is not stable. The air intake control device of the engine includes a valve mounted in an air intake manifold and a driving mechanism driving the valve to open and close; the valve includes a transmission shaft and a valve sheet, wherein the valve sheet is fixed on the transmission shaft, and the transmission shaft is connected with the driving mechanism; the driving mechanism includes a limiting rod, wherein a first connecting part is arranged at one end of the limiting rod, and a second connecting part is arranged at the other end of the limiting rod; the first connecting part is connected with the transmission shaft, and the second connecting part is connected with a signal actuator; and the first connecting part and the second connecting part are arranged on the same side of the limiting rod. The engine includes the air intake manifold and the air intake control device of the engine. The air intake control device of the engine and the engine therewith are used for controlling the air intake system of the engine.

This invention relates to a fluid quick joint including multiple quick male and female joints, socket and bolt pieces, the joints contain hollow bodies, sealing cores, back top bolts and fastened spring between the sealing core and the back to bolt, the male joint is fixed in a through hole of the socket piece, the female is fixed in a through cave on the bolt which front part can be plug into the front of the socket and locked before connection the sealing cores of the front quick connecting male and female joints are packet with the inside wall of the body to stop the quick joints, after connection, sealing cores are conflict with each other to leave the packing position to conduct the quick connectors.

The invention relates to a clutch-type electronic lock which mainly comprises a connecting part. The connecting part is used for connecting an inner handle and a lock cylinder, so that the inner handle can directly drive the lock cylinder to rotate. The clutch-type electronic lock further comprises a clutch part and a driving lever. The clutch part is used for clutching between an outer handle and the lock cylinder. The driving lever is used for driving clutching of the clutch part. The inner handle, the connecting part and the lock cylinder are sequentially connected. An electronic lock body, the driving lever, the clutch part and the lock cylinder are sequentially connected. The connecting part, the clutch part and the driving lever are arranged in an inner cover. The clutch-type electronic lock is small in occupied space, high in safety performance, cannot be easily destroyed by an external force, high in performance of preventing technical unlocking, and has a swap function that the lock cylinder can be replaced to adapt different lock bodies.

The invention discloses a double-roller washing machine. The double-roller washing machine comprises a frame of the washing machine, a first outer cylinder and a second outer cylinder, wherein the first outer cylinder and the second outer cylinder are installed in the frame, and rollers are installed in the first outer cylinder and the second outer cylinder respectively. The first outer cylinder and the second outer cylinder are connected into a whole through a connecting piece, and at least one connecting base point fixedly installed on the connecting piece is arranged on the first outer cylinder or the second outer cylinder. The first outer cylinder and the second outer cylinder are connected to be of an integrated structure through the connecting piece, so that the compactness of the washing machine is effectively improved, the connecting piece is fixedly installed and connected through the at least two connecting base points on the first outer cylinder or the second outer cylinder so that the stability can be improved, and the connecting piece supplies a balance weight shared by the first outer cylinder and the second outer cylinder to the first outer cylinder and the second outer cylinder; in addition, the first outer cylinder and the second outer cylinder share the balance weight, the first outer cylinder or the second outer cylinder of the washing machine serves as at least a part of the balance weight of the second outer cylinder or the first outer cylinder, so that the shock absorption effect on the two rollers of the washing machine is obvious, and the production cost is reduced.

The invention discloses a triangular keel mounting structure of a building suspended ceiling. The triangular keel mounting structure comprises triangular keels. Buckling plates are mounted on the lower portions of the triangular keels in a clamped mode. The tops of the triangular keels are provided with narrow-mouth grooves which are internally provided with a plurality of screws. The ceiling is provided with a plurality of mounting holes which are internally provided with expansion type connecting components. The expansion type connecting components comprise connecting parts which are provided with second connecting holes. The tops of the screws are inserted into the connecting parts. First connecting holes and the second connecting holes are connected through connecting elements. The triangular keel mounting structure has the beneficial effects that the slidable screws in the narrow-mouth grooves are connected with the expansion type connecting parts, the mounting processes of a hanger rod and a main keel are omitted, the mounting distance between the hanger rod and the main keel is omitted, and therefore, the triangular keel mounting structure has the characteristics that mounting is convenient, and meanwhile, the distance between the ceiling and the buckling plates is remarkably decreased; and the triangular keel mounting structure is suitable for residences of low floor height. The invention further provides a construction method of the triangular keel mounting structure of the building suspended ceiling.

The invention discloses a gas distributor applied to a film deposition technique. Radial gas distribution main pipes are arranged in a body, gas distribution branch pipes are arranged on both sides of the gas distribution main pipes in a staggered mode, the cross sectional areas of pipelines are gradually reduced from the gas distribution main pipes to the gas distribution branch pipes, so that a tree-shaped gas distribution network is formed, reactant gas or vapor from a gas inlet pipe of a gas distribution network center can be vertically and uniformly blown to the surface of a covered silicon wafer through a plurality of gas outlet pipes which are regularly distributed, the homogeneous reaction on the covered silicon can be realized, the reaction efficiency can be improved, the consumption of the reactant gas and the size of equipment can be reduced, residual gas at the edge of the gas distribution network can be easily blown out by blowing gas, and the CVD (Chemical Vapor Deposition) reaction in the ALD (Atomic Layer Deposition) reaction is effectively prevented. The gas distributor has the obvious characteristics that the yield and qualified rate of the ALD reaction are increased, and the cost is reduced.

The invention discloses an integrated voice module for an air conditioner and the air conditioner, and solves the technical problem that when a conventional air conditioner voice module is mounted, complex cabling is caused in the mounting process because the interference of a loudspeaker in sound reception by a microphone needs to avoid. The integrated voice module comprises a voice control plate, the microphone, the loudspeaker and a voice module bearing cavity, wherein a dividing wall is arranged in the voice module bearing cavity, and used for dividing the voice module bearing cavity into a microphone bearing cavity and a loudspeaker cavity; the voice control plate and the microphone are mounted as well as microphone sound reception holes are formed in the microphone bearing cavity; and the loudspeaker is mounted and loudspeaker sound emission holes are formed in the loudspeaker bearing cavity. The integrated voice module has the advantages that the voice control plate, the microphone and the loudspeaker are unitedly borne by using the voice module bearing cavity, and separated mounting of the microphone and the loudspeaker in the separated cavities can be achieved by using the dividing wall, so that the cabling is simplified and the mounting difficulty is reduced when the interference of the sound of the loudspeaker in sound reception by the microphone is avoided.

The invention provides an abnormal signal orientation method in a pipeline. The method comprises the following steps of: acquiring and extracting output signals of two transmitters of a preset time length as first acquired data; performing normalization processing, mean adjustment and bipolar processing of the output signals on two frames of data of the first acquired data to obtain second acquired data; searching a signal maximum extreme value from the two frames of data of the second acquired data according polarity of the signal and performing trailing edge processing of an abnormal signal on the two frames of data of the second acquired data to obtain third acquired data; performing forward and backward bidirectional one-time linear interpolation of M-1 points on any path of signal for the third acquired data to form two interpolation sequences; and calculating cross correlation coefficient curves of the two sequences and another signal sequence respectively to obtain propagation direction of a pipeline leakage signal. According to the method, the propagation direction of the abnormal signal in the pipeline can be reliably determined.

The invention discloses a TBM pushing mechanism structure and a device. The pushing mechanism structure comprises a pushing mechanism and an anti-torsion spring plate arranged on the pushing mechanism. The device applying the pushing mechanism structure further comprises a front main beam, a hinge base, a tight support device, a left support shoe, a right support shoe and a pushing sliding beam. The front main beam and the pushing sliding beam are fixedly connected. The tight support device is arranged on the pushing sliding beam and can slide front and back along the pushing sliding beam. Theleft support shoe and the right support shoe are hinged and installed to the tight support device. One end of the pushing mechanism is rotationally connected with the front main beam, and the other end of the pushing mechanism is hinged to the corresponding left support shoe or right support shoe. The pushing mechanism structure and the device using the pushing mechanism are provided, the installing distance between upper-lower pushing mechanisms on each side of the front main beam can be reduced, accordingly, the space utilization rate above and below the pushing mechanism is increased, on one hand, design flexibility is improved, and on the other hand, large space is provided for manual auxiliary work.

The invention discloses a device and method for automatic centering of the rope-out deflection angle of a winch. The device comprises the winch and a supporting body, and a rope is wound around a winding drum of the winch; the winch is slidably arranged on the supporting body in the axis direction of the winding drum of the winch, when the winding drum of the winch rotates, an axial component of pulling force applied to the roper drives the winch to slide in the direction of the axial component, and thus the rope-out deflection angle of the winch is kept to be smaller than or equal to a presetvalue. According to the device and method for automatic centering of the rope-out deflection angle of the winch, the service life of the rope is greatly prolonged, the mounting distance between the winch and a fixed pulley can be decreased as much as possible, and thus a construction machinery structure applying the winch can be manufactured to be very compact.

The invention discloses a CVT (constant-voltage transformer) driving system and a motorcycle. The CVT driving system comprises an engine and a CVT, wherein a driving shaft of the CVT and a driven shaft of the CVT are parallel to each another and are in transmission fit with each other; and the driven shaft of the CVT is positioned above the driving shaft of the CVT. Because the driven shaft of the CVT is placed above the driving shaft of the CVT, the mounting distance is shortened. The CVT driving system has a compact mounting structure, and is applicable to a motorcycle (particularly a three-wheeled motorcycle); the overall arrangement of the whole motorcycle is coordinated; safety requirements on shock absorption of the motorcycle can be well met; the CVT and the engine can be mounted on a driving portion together and are used for directly driving wheels; because the whole size of the CVT driving system is reduced, mounting space is reduced, the CVT driving system is mounted and arranged conveniently, and the manufacturing cost of whole driving equipment is saved; and because the CVT driving system has an inclined structure, an air convection principle can be implemented in the CVT shell, namely, hot air ascends and cold air descends in the CVT shell, the CVT shell is suitable for convection flowing of heat, heat dissipation of the heat dissipation channel is smooth, and heat dissipation on the CVT transmission mechanism is facilitated.

The invention discloses a vacuum interruption mechanism used for strengthening electrical insulation properties, which comprises a vacuum interrupter, a moving conducing rod and a static conducting rod connected with the vacuum interrupter, and contact terminals arranged on external ends of the moving conducting rod and the static conducting rod, and is characterized in that: the vacuum interruption mechanism also comprises an insulation box of which the top is provided with an opening and two opposite sides are provided with through holes; the vacuum interrupter is arranged in the insulation box; and the moving conducing rod and the static conducting rod pass a corresponding through hole respectively. The vacuum interruption mechanism has the advantages of improving the electrical insulation properties and effectively reducing the overall volume of a high voltage switch.

The invention discloses a power input connection device of a fracturing pump. The power input connection device of the fracturing pump comprises a transitional connection plate; an input shaft of a gear case of the fracturing pump is sleeved with the inner circumference of the transitional connection plate in a sliding mode; the outer circumference of the transitional connection plate is sleeved with a connecting flange II in a sliding mode; the connecting flange II is fixedly connected with an end face flange arranged on one side of a coupler I, and an end face flange arranged on the other side of the coupler I is fixedly connected with an end face flange arranged on one side of a coupler II; and an end face flange arranged on the other side of the coupler II is fixedly connected with a shaft end flange of an output shaft of the gear case. According to the power input connection device of the fracturing pump, the correctness and the reliability of mounting are guaranteed, mounting and dismounting can be conducted conveniently, the structure is compact, and the mounting distance between the input shaft of the fracturing pump and the gear case can be reduced.

The invention relates to an electroplating device. The electroplating device comprises an electroplating bath, a delivery mechanism and multiple groups of jet flow components arranged in the electroplating bath, wherein each jet flow component comprises two jet flow pipes vertically arranged side by side; a gap for passing of a circuit board is left between the two jet flow pipes; at least one row of injection hole sets distributed in the axial direction of each jet flow pipe is arranged at the inner side of the jet flow pipe; the rows of injection hole sets of the two jet flow pipes are arranged opposite to each other; each injection hole set comprises a plurality of injection holes; and the injection holes of the injection hole sets positioned in the opposite rows are arranged in the axial direction of the jet flow pipe in a staggered manner. The injection hole is of a hole-like structure, so that the circuit board can not be scratched; when the injection holes of the opposite rows are staggered, opposite injection of the injection holes of the two rows can be avoided, thus improving the hole debubbling effect; and impact forces of electroplating solutions injected by the injection holes of the two opposite rows on the circuit board are the same, so that circuit board swing and jet flow pipe collision can be effectively avoided, and the jet flow pipe can be prevented from scratching the circuit board.

The invention discloses a concave grating-based cuboid portable Raman spectrometer. The concave grating-based cuboid portable Raman spectrometer comprises a casing bracket, a lens fixedly mounted on the side wall of the casing bracket, a 45-degree edge filter, a condensing lens and a gap, a reflector and a detector, wherein the 45-degree edge filter, the condensing lens and the gap are mounted on the central line of the lens in sequence; the reflector is arranged on a straight line where the central line of the lens is located, is fixedly mounted on the rear side of the gap and is used for changing the transmitting direction of a Raman signal penetrating through the gap and reaching a concave grating; a detector is fixedly mounted on the side edge of the reflector, the long edge of the detector is perpendicular to the straight line, and a perpendicular point, which is perpendicular to the straight line, on the long edge of the detector is located on the back surface of the reflector; the concave grating is fixedly mounted in the face of the detector and is used for receiving the Raman signal reflected by the reflector. According to the concave grating-based cuboid portable Raman spectrometer, by addition of the reflector, a light path is deflected; incident light of the spectrometer with the straight line and the long edge of the detector are in a perpendicular relation, and the light path is folded, so that a limited spectrometer space is effectively used, and the spectrometer is of a regular and compact quadrilateral structure.

The invention provides a reinforcement connection member for a washing machine dual-end drainage pump. The washing machine dual-end drainage pump includes at least two drainage pumps which share the same one water inlet; the two drainage pumps of the dual-end drainage pump are connected into a whole through the reinforcement connection member; and the reinforcement connection member is fixedly arranged on an installation plate of a washing machine. The reinforcement connection member can firmly connect the two drainage pumps together in a fixed manner according to the structure features of the dual-end drainage pump; and the reinforcement connection member is fixedly arranged on the installation plate of the washing machine, and then the stability of installation of the two drainage pumps can be ensured.

A bottom-to-surface connection installation between a common floating support and the sea bottom, having a plurality of flexible lines such as flexible pipes extending between said floating support and the sea bottom. The flexible lines are supported by respective ones of a plurality of troughs each trough lying between two pipe portions defining a first flexible line portion in a hanging double catenary configuration between the floating support and the trough, and a second flexible line portion in a single catenary configuration between the trough and the point of contact of the flexible pipe with the sea bottom. The installation has at least one support structure having a base-forming bottom portion resting on and / or anchored to, or embedded in the sea bottom and a top portion supporting at least two troughs, respectively a bottom trough and a top trough, the troughs being arranged at different heights in such a manner that the low point of the first flexible line portion passing via the bottom trough is situated below the low point of the first flexible line portion passing via the top trough.

The invention discloses a camera module and electronic equipment, and belongs to the technical field of communication equipment, the camera module comprises a lens, an optical filter, a circuit board and a photosensitive chip; the lens and the optical filter are oppositely arranged, the circuit board comprises a first connecting part, a second connecting part and a first flexible bending section, the first connecting part and the second connecting part are connected through the first flexible bending section, and the lens and the first connecting part are located on the two sides of the optical filter respectively. The optical filter is arranged on the surface, deviating from the second connecting part, of the first connecting part, the photosensitive chip is arranged between the first connecting part and the second connecting part, and the photosensitive chip is electrically connected with the circuit board; the first connecting part is provided with a light-transmitting area, the light-transmitting area is arranged opposite to the optical filter, and the photosensitive chip is arranged opposite to the light-transmitting area. According to the scheme, the problem of poor lightness and thinness of the electronic equipment can be solved.

The invention relates to an air knife assembly and a drying device. The air knife assembly comprises two vertical air pipes arranged side by side. A gap is reserved between the two air pipes, and a circuit board can pass through the gap. The inner side of each air pipe is provided with at least one line of air hole groups which are distributed in the axial direction of the air pipe. Each line of air hole groups of each air pipe are arranged on the inner side. Each air hole group comprises multiple air holes. The air holes of the lines of air hole groups on the inner sides of the air pipes are arranged alternately in the axial direction of the air pipes. The air holes are of hole-shaped structures in the air pipes, so that the circuit board cannot scrape against protruding objects, and the installation distance between the air pipes is shortened; when the air holes of the lines on the inner sides are arranged alternately, the two lines of air holes are protected against opposite impact, and therefore the air drying effect on the holes is improved; and air sprayed by the air holes of the two lines on the inner sides apply the same impact force on the circuit board, the circuit board can smoothly pass through the gap of the air knife assembly, the circuit board can be effectively prevented from swinging and colliding with the air pipes, and the air pipes are prevented from scraping against the circuit board.

The invention discloses a triangular keel mounting structure of a building suspended ceiling. The triangular keel mounting structure comprises triangular keels. Buckling plates are mounted on the lower portions of the triangular keels in a clamped mode. The tops of the triangular keels are provided with narrow-mouth grooves which are internally provided with a plurality of screws. The ceiling is provided with a plurality of mounting holes which are internally provided with expansion type connecting components. The expansion type connecting components comprise connecting parts which are provided with second connecting holes. The tops of the screws are inserted into the connecting parts. First connecting holes and the second connecting holes are connected through connecting elements. The triangular keel mounting structure has the beneficial effects that the slidable screws in the narrow-mouth grooves are connected with the expansion type connecting parts, the mounting processes of a hanger rod and a main keel are omitted, the mounting distance between the hanger rod and the main keel is omitted, and therefore, the triangular keel mounting structure has the characteristics that mounting is convenient, and meanwhile, the distance between the ceiling and the buckling plates is remarkably decreased; and the triangular keel mounting structure is suitable for residences of low floor height. The invention further provides a construction method of the triangular keel mounting structure of the building suspended ceiling.

The invention belongs to the technical field of transmissions, and particularly relates to an integrated planetary mechanism two-gear transmission which comprises a transmission shell, an input shaftand an output shaft. The input shaft is provided with a sun gear and a high-gear cone hub, the output shaft is provided with a planet carrier, and the planet carrier is rotationally connected with a planet gear. A low-gear cone hub is arranged in the transmission shell; the planet gear is sleeved with a gear ring, and the gear ring is located between the high-gear cone hub and the low-gear cone hub; a first synchronous lock ring is arranged between the high-gear cone hub and the planet gear, and a second synchronous lock ring is arranged between the low-gear cone hub and the planet gear; and the first synchronous lock ring and the second synchronous lock ring are located on the two sides of the gear ring and can be meshed with the gear ring through spline teeth, the first synchronous lockring and the second synchronous lock ring are each provided with a positioning part, and the two sides of the gear ring are provided with driving mechanisms. According to the scheme, a planetary mechanism and a synchronizer assembly are combined into a whole, the installation length is shortened, the number of parts is reduced, the rotational inertia of the two ends of a synchronizer is equivalentand small, and the service life of the synchronizer is prolonged.

The invention relates to a water jet cutter assembly and a washing device. The water jet cutter assembly comprises two spray pipes vertically arranged side by side, wherein a gap for a circuit board to pass through is reserved between the two spray pipes; at least one column of spray holes distributed along the axial direction of each spray pipe are formed in the inner side of each spray pipe; the columns of spray holes of the two spray pipes are arranged oppositely; each group of spray holes comprises a plurality of spray holes; and the spray holes positioned in the opposite columns of spray holes are formed in the axial directions of the spray pipes in a staggered manner. The spray holes are of porous structures on the spray pipes, the circuit board cannot rub protruding objects, and the mounting distance between the spray pipes is decreased; when the spray holes in the opposite columns are staggered, the spray holes in the two columns are prevented from rushing oppositely, and the washing effect for the holes is improved; the impact forces of washing fluids sprayed by the two opposite columns of spray holes for the circuit board are the same, the circuit board can smoothly pass through the gap between the spray pipes, circuit board swinging and collision with the spray pipes can be effectively avoided, and the circuit board is avoided from being scratched by the spray pipes.

The invention provides a rotating bias drive mechanism. The mechanism comprises a fixed frame and a rotating frame, the surfaces of the fixed frame and the rotating frame are parallel to each other, asupporting component and a driving component which are connected with the rotating frame are fixedly arranged on the fixed frame, and the rotating frame can freely rotate in a plane relative to the supporting component and the driving component. The driving component comprises driving shafts matched with the rotating frame, the positions of the driving shafts can be changed in the rotating planeof the rotating frame under the action of the driving component, and the driving component can lock the positions of the driving shafts. The mechanism has the advantages that two rotating centers areprovided for the rotating frame, and the position of one driving shaft is changed by the driving component, so that the rotating frame rotates relative to the supporting component in the plane, the influence of eccentric force on the service life of the rotating shaft under the condition of a single rotating shaft is overcome, the stability is improved, and the service life is prolonged; and the driving shafts can be fixed at any position within the moving range, so that the rotating frame cannot shake in the using process, and safety is improved.

The invention belongs to the technical field of conveyor control and protection, and particularly relates to a mining belt conveyor control and protection system. The mining belt conveyor control andprotection system comprises a supporting frame and a carrier roller frame, wherein a carrier roller is connected to the carrier roller frame, a conveying belt is arranged at the top end of the carrierroller, and hemispherical protrusions are evenly distributed on the bottom face of the conveying belt; a roller is arranged at the end of the supporting frame, wherein grooves corresponding to the protrusions of the conveying belt are annularly and evenly formed in the side face of the roller; and a KZX-48K mining flameproof and intrinsic safety PLC control box is arranged on the supporting frame. According to the mining belt conveyor control and protection system, through the arrangement of an anti-deviation structure and the control box, deviation and damage of the conveying belt caused bysliding of the conveying belt on the roller can be reduced, and deviation of the conveying belt can be effectively detected and controlled; and meanwhile, the control box adopting a intrinsic safety modular design, so that production cost is saved, the severe environment in mining operation can be effectively coped, and the working quality of the belt conveyor is improved, and the service life ofthe belt conveyor is prolonged.

The invention provides a vertical transmission method of a gearbox for rail transit and a vertical transmission gearbox. An input shaft and an output shaft are vertically arranged, a second-stage transmission mode is adopted for transmitting the rotation of the input shaft to the output shaft through vertical transmission, a first-stage transmission device transmits the rotation of the input shaftto a middle shaft in a vertical transmission mode, and a second-stage transmission device transmits the rotation of the middle shaft to the output shaft in a parallel transmission mode. The second-stage transmission mode is adopted, the first-stage transmission device adopts vertical transmission, and the second-stage transmission device adopts parallel transmission, so that the size of the wholegearbox is small, the structure is compact, and the installation space is greatly saved. The two-stage transmission enables the transmission ratio to be adjusted within a larger range, and is high inreliability.