42 results about "Transmission switching" patented technology

The utility model relates to a flywheel assembly and an exercise bicycle. The flywheel assembly comprises a flywheel body, a driving shaft and a transmission switching mechanism. A one-way bearing is embedded in an axis opening of the flywheel body; the driving shaft is arranged in the axis opening of the flywheel body in a penetrating mode, and when the driving shaft rotates in the first direction, the flywheel body is driven by the one-way bearing to rotate in the first direction. The transmission switching mechanism comprises a fixed gear and a movable gear, and the fixed gear is fixedly connected with the flywheel body; the movable gear is controlled by the driving shaft to rotate and is further controlled by external force to move in the axial direction of the driving shaft so that the movable gear can be switched between the meshed state and the separated state relative to the fixed gear. When the driving shaft rotates in the second direction, under the condition that the movable gear is meshed with the fixed gear, the driving shaft drives the flywheel body to rotate in the second direction through the movable gear and the fixed gear which are meshed with each other; and under the condition that the movable gear is separated from the fixed gear, the driving shaft freely rotates in the second direction relative to the flywheel body.

The invention relates to the field of engine blade detection, in particular to aero-engine blade profile detection equipment which comprises a detection adjusting support, the upper portion of the detection adjusting support is movably connected with a supporting frame, and the middle of the supporting frame is slidably connected with a detector shell. The middle position of the bottom of the detector shell is fixedly connected with a detection probe. The aero-engine blade profile detection device is composed of a transmission switching mechanism and a triggering mechanism. In the process that the detector shell carries the detection probe to carry out detection on the top surface of the engine blade, when the detection probe is about to move to the edge of the engine blade, the trigger mechanism and the transmission mechanism are matched for transmission, so that the transmission mechanism drives the transmission switching mechanism to operate, and the moving direction of the detector shell is automatically switched; the situation that the detection probe needs to be positioned again after leaving the top face position of the engine blade is avoided, and therefore the detection efficiency is improved.

The invention relates to a transmission switching system and a base station antenna, and the system comprises a housing, a switching driving device, a plurality of switching mechanisms, and a plurality of output racks. The output rack can reciprocate in the width direction of the shell. One end of the output rack is used for being connected with a phase shifter pull rod. Each switching mechanism comprises a switching wheel and an output shaft which can be meshed with each other, and the output shaft can also be meshed with the corresponding output rack; the switching driving device comprises at least one driving gear, a first input wheel and a second input wheel; the switching driving device can drive one of the driving gears to be meshed with one of the switching wheels by rotating the first input wheel, and can also drive the switching wheels meshed with the driving gears to rotate by rotating the second input wheel, so that the corresponding output racks are driven to move under the action of the output shaft. The occupied space in the length direction of the antenna is greatly reduced, and more space is saved for the electrical structure design of the antenna.

The present invention relates to the field of engine blade detection, specifically to an aircraft engine blade profile detection device, comprising a detection and adjustment support, wherein the upper portion of the detection and adjustment support is movably connected to a support frame, the middle portion of the support frame is slidably connected to a detector housing, and the middle position of the bottom of the detector housing is fixedly connected to a detection probe, and further comprising: a driving mechanism. This aircraft engine blade profile detection device is composed of a transmission switching mechanism and a triggering mechanism; when the detector housing carries the detection probe to perform detection on the top surface of the engine blade, when the detection probe is about to move to the edge of the engine blade, the triggering mechanism cooperates with the transmission mechanism to drive the transmission mechanism to operate with the transmission switching mechanism, and automatically switches the moving direction of the detector housing, thereby avoiding the need to reposition the detection probe after the detection probe leaves the top surface position of the engine blade, thereby improving the detection efficiency.

A transmission switching structure, a feeding structure, a returning structure, a feeding and returning structure, and a filament box. The transmission switching structure includes: a transmission assembly, including a first driving member connected to the transmission shaft, a transmission shaft, transmission mechanisms, the transmission mechanisms including a first transmission gear swingably connected to the transmission shaft; a switching assembly, including a second driving member, a switching shaft connected to the second driving member, switching members, the switching shaft rotates about a second axis by a preset angle to cause one of the switching members to be in a first state; the switching member in the first state is configured to restrict the first transmission gear of corresponding transmission mechanism to a first position and the first transmission gear limited to the first position is configured to transmit a driving force of the first driving member to a mechanism connected thereto.

The present invention discloses a combined wind power generation device for improving the utilization rate of wind energy, which belongs to the technical field of wind power generation, and comprises a tower and a nacelle rotatably installed on the top surface of the tower, and also comprises a hub, impeller blades, a main shaft, a gear box, a doubly-fed wind turbine generator set, an abutment wheel, a tightening adjustment mechanism, a vertical sleeve, a sliding sleeve, a rotating blade, an air duct opening and closing mechanism and a transmission switching mechanism; the present invention can convert the wind energy in nature into the mechanical energy of the main shaft by transmission through the setting of the rotating blades through the adjustment processing of the tightening adjustment mechanism and the mutual cooperation of the air duct opening and closing mechanism and the transmission switching mechanism, so that the impeller blades and the rotating blades can integrately capture the wind energy in nature, thereby better converting it into the mechanical energy of the main shaft, thereby greatly improving the utilization rate of the wind energy in nature.

The utility model relates to an exercise bicycle which comprises a flywheel body, a driving wheel, a transmission switching mechanism and a switching control assembly. The driving wheel is configured to rotate under the action of external force; the transmission switching mechanism is configured to be switched between a two-way flywheel mode and a one-way flywheel mode; when the driving wheel rotates in the first direction, the driving wheel drives the flywheel body to rotate in the first direction. When the flywheel body rotates in the second direction, the flywheel body is driven to rotate in the second direction under the condition that the transmission switching mechanism is in the bidirectional flywheel mode, and the flywheel body freely rotates in the second direction relative to the flywheel body under the condition that the transmission switching mechanism is in the unidirectional flywheel mode; the switching control assembly at least comprises a rotation detection sensor and a control unit, and the rotation detection sensor is configured to acquire whether the driving wheel is in a static state or not; the control unit is configured to receive a bidirectional switching instruction and control the transmission switching mechanism to be switched to a bidirectional flywheel mode when the driving wheel is in a static state.

The invention relates to a transmission arrangement (1) for a motor vehicle comprising: - a housing (G), - an input shaft (2), - a first planetary gear (4), - a second planetary gear (9), - wherein the planet carrier (13) of the second planetary gear (9) is rotationally fixed to the housing (G), - an output shaft (3), and - a transmission switching device (K1, K2) for shifting between two gears, - wherein, by means of the transmission switching device (K1, K2), the planet carrier (8) of the first planetary gear (4) and the output shaft (3) can be connected to each other so that they can rotate together as a unit without different speeds, and can be separated from each other so that they can rotate at different speeds relative to each other, and / or - wherein, by means of the transmission switching device (K1, K2), the planet carrier (8) of the first planetary gear (4) and the housing (G) can be connected to each other.so that they can stand still together as a unit without different rotational speeds, and are separable from one another so that they can rotate at different speeds relative to each other. Furthermore, the invention relates to an axle drive device (30) for driving one or more vehicle wheels (F1, F2) of a motor vehicle.

The utility model relates to a flywheel assembly, the flywheel assembly at least comprises a flywheel body, a driving wheel and a transmission switching mechanism, a one-way bearing is embedded in an axis opening of the flywheel body, and a driven wheel is fixedly arranged on the side portion of the axis opening; the driving wheel is located on the same side of the driven wheel and is configured to rotate under the action of external force. The transmission switching mechanism comprises a transmission switching wheel, and the transmission switching wheel is arranged on the same side of the driven wheel on the flywheel body and is configured to move under the control of external force so as to be switched between the state that the transmission switching wheel is meshed with the driving wheel and the driven wheel at the same time or the state that the transmission switching wheel is separated from the driving wheel and the driven wheel at the same time; when the driving wheel rotates in the first direction, the flywheel body is driven to rotate in the first direction at least through the one-way bearing. When the flywheel rotates in the second direction, the flywheel body is driven to rotate in the second direction under the condition that the transmission switching wheel is meshed with the driving wheel and the driven wheel at the same time, and the flywheel body freely rotates in the second direction relative to the flywheel body under the condition that the transmission switching wheel is separated from the driving wheel and the driven wheel at the same time.

The invention provides a star piston power system based on a magnetic transmission switching valve. The star piston power system comprises a plurality of piston expanders, an air inlet subsystem and an exhaust subsystem. The piston expanders are distributed in a star shape; the air inlet subsystem comprises a first valve body, a first sliding block and a first rotating disc, the first valve body is provided with a first annular cavity and a plurality of first air outlets, the first sliding block is movably arranged in the first annular cavity, and the first rotating disc is rotatably arranged on the first valve body and magnetically attracts the first sliding block; the exhaust subsystem comprises a second valve body, a second sliding block and a second rotary disc, the second valve body is provided with a second annular cavity and a plurality of second air inlets, the second sliding block is movably arranged in the second annular cavity, and the second rotary disc is rotatably arranged on the second valve body and magnetically attracts the second sliding block. The star piston power system based on the magnetic transmission switching valve can effectively reduce energy loss of the system and improve the overall energy efficiency of the system, and is more suitable for the working condition of a low-temperature heat source.

A planetary bottom bracket gearbox for a bicycle or pedelec (1) is proposed, comprising a gearbox input shaft (WAn) as the drive, a gearbox output shaft (WAb) as the output, a multi-stage main gearbox (3), and at least one gearbox shift group (4), wherein the gearbox shift group (4) has two planetary gear sets (RS1, RS2) and four shift elements (B1, B2, K1, K2), wherein a second element of the first planetary gear set (RS1) is connected to a first shaft (W1), wherein a third element of the first planetary gear set (RS1) is connected via a fourth shaft (W4) to a second element of the second planetary gear set (RS2), wherein a first element of the first planetary gear set (RS1) is connected to a fifth shaft (W5), and wherein a first element of the second planetary gear set (RS2) can be locked via a third shaft (W3) and via a second shift element (B2) designed as a brake.wherein the third shaft (W3) can be connected to the fifth shaft (W5) via a sixth switching element (K2) designed as a clutch or freewheel, wherein a third element of the second planetary gear set (RS2) can be locked via a second shaft (W2) and via a first switching element (B1) designed as a brake, and wherein the second shaft (W2) can be connected to the first shaft (W1) via a fifth switching element (K1) designed as a clutch or freewheel. Furthermore, a bicycle or pedelec (1) with a bottom bracket gearbox is proposed.

The transmission switching assembly of the milling and grinding integrated machine tool comprises a sliding base, and a motor is arranged at the upper end of the sliding base; the rack is connected with the machine tool base; the gear is connected with the free end of the motor; the limiting guide plates are symmetrically arranged on two sides of the lower end of the sliding seat; the locking and separating unit is arranged on the side part of the gear; under the action of the locking and separating unit, at least one of the gear and the rack can move in the length direction of the limiting guide plate, so that the gear and the rack get close to each other or get away from each other. According to the technical scheme, the overall structural design is compact, the machining precision and working condition adaptability of machine tool equipment are greatly improved, manual intervention is not needed in the whole switching process, the positioning precision is high, and the machining quality and production efficiency of the machine tool equipment are effectively improved.

The utility model provides a transmission switching device, feeding equipment, material returning equipment and a 3D printer, and the transmission switching device comprises a switching assembly which comprises a switching piece and a switching gear arranged on the switching piece; the driving assembly comprises a driving part and an output shaft arranged on the driving part, the output shaft is in transmission connection with the switching part, and the driving assembly is configured to selectively arrange the switching gear at the first position or the second position; the driving force of the driving part is transmitted to equipment which is directly or indirectly meshed with the switching gear; a first gear assembly is further included, the first gear assembly comprises at least one first gear, and the first gear is in meshed connection with a switching gear arranged at the first position or the second position so as to transmit the driving force of the driving part to equipment meshed with the first gear. The switching gear is switched between the first position and the second position, the feeding and discharging requirements of the consumables are met, and the feeding and discharging reliability of the consumables is ensured.

The invention provides a direct-drive mechanical decoupling drive-by-wire brake and a brake control method.The drive-by-wire brake comprises a brake master cylinder assembly, a brake pedal assembly, an electric drive assembly and an electronic control unit, and under the initial state, the energy recovery brake mode and the normal brake mode, a pedal push rod and a first brake piston are mechanically decoupled; all-electric driving is adopted for braking, and therefore the situation that in a non-decoupling braking system, after a driver steps on a brake pedal, a brake must participate in vehicle deceleration work, and kinetic energy is wasted is avoided; the electric driving assembly comprises an electric driving mechanism and a transmission mechanism, the electric driving mechanism and the transmission mechanism are coaxially arranged on the periphery of the pedal push rod in a sleeving mode, and a rotating part synchronously rotating with a rotor of the electric driving mechanism coaxially and directly converts rotating motion into linear motion to push a first brake piston; no gear combination needs to be additionally arranged in the middle for transmission switching of the radial position, so that the size of the brake is reduced, transmission loss is reduced, and the kinetic energy recovery rate is increased.

A data communication method for a de-icing system for a turbine engine is disclosed. The turbine engine includes a fixed reference frame and a rotating reference frame. The system includes a non-contact rotating power transformer (RTU), the primary side of which is constrained by the fixed reference frame, and the secondary side of which is constrained by the rotating reference frame. The fixed reference frame includes an ice protection and control unit (IPC) and a power supply device (DC / AC) for supplying AC power to the primary side. The IPC transmits commands to the DC / AC to adjust the level of power supplied to the primary side. The rotating reference frame includes a propeller (1) and a switch, with a plurality of resistors fixed to the propeller. The switch is used to sequentially distribute the power supplied to the secondary side to the resistors. The protection and control unit (IPC) is programmed to transmit switching commands to the switch via the power supply unit (DC / AC) and the transformer (RTU) by issuing instructions (Ic1, Ic2, Ic3, Ic4, Ic5, Intl) to the power supply unit (DC / AC) to encode the voltage wave sequence (To) applied to the primary side. The switch is programmed to decode the voltage wave sequence (To) recovered on the secondary side.

A clutch type power dual output system and a washing machine thereof, the clutch type power dual output system comprising a driving component; a first rotating component sleeved on a power output shaft and always forming a transmission fit; a second rotating component having a static position state and a moving position state; and a clutch type transmission mechanism in transmission connection with the driving component and arranged between the first rotating component and the second rotating component. The washing machine comprises a washing machine barrel and the clutch type power dual output system described above; wherein the first rotating component is a pulsator, the second rotating component is a dehydration basket, and the pulsator is located in the dehydration basket. The clutch type power dual output system provided by the application has the functions of transmission engagement, transmission separation and transmission switching, adopts many shared components, effectively reduces the cost of components, and is simpler in structure and production and assembly process.

The invention discloses a driving switching clutch actuator for a power distribution switch cabinet. Comprising a driving motor arranged at one end of a shell, an electric driving transmission part, a driving switching part and an output transmission part, the electric driving transmission part, the driving switching part and the output transmission part are sequentially arranged in the shell in a meshed connection mode, the driving motor is in transmission connection with the electric driving transmission part, a switching shaft of the driving switching part is combined with a transmission switching gear through a switching mechanism, and a switching fixing mechanism is arranged above the switching mechanism. The transmission switching gear is connected with a driving connection gear on an electric drive transmission shaft of the electric drive transmission part in a meshed mode, and a switching connection gear of the switching shaft is connected with an output gear of the output transmission part in a meshed mode. The beneficial effects of the invention are that the drive switching part is adopted to combine the electric drive transmission part and the output transmission part to integrate electric control and manual control, operation modes can be rapidly switched according to different operation and maintenance requirements, the size and volume are small, the cabinet space is not occupied, the cabinet can be connected and combined with cabinets of different specifications, and the cabinet has the advantages of wide application range, long service life and low cost. And the installation is convenient.

The invention relates to the technical field of cutting devices, in particular to a cutting device for precision machining. Comprising a base frame which is provided with a variable frequency motor and a central control unit, and further comprises a saw belt, a reciprocating driving platform, a reciprocating cutting support which is driven by the variable frequency motor and is connected with the reciprocating driving platform and reciprocates in the vertical direction, a driving belt wheel and a driven belt wheel which are rotationally connected to the reciprocating cutting support, the driving belt wheel and the driven belt wheel are both in transmission connection with the saw belt, and the transmission switching module is driven by a variable frequency motor and is arranged to enable the driving belt wheel to rotate unidirectionally or rotate in a reciprocating mode. The cutting device has the beneficial effects that by integrating the transmission switching module and the stroke linear adjustable reciprocating driving platform, the problems that a traditional cutting device is single in function, complex in mode switching and limited in precision are solved.

The invention relates to the technical field of detection devices, in particular to a large-view-field low-light low-altitude unmanned aerial vehicle detection device which comprises a base frame and an air blower installed on the base frame, a rotating shaft is rotationally installed on the base frame, a transmission switching system and a variable-amplitude movement system are arranged on the base frame, and the transmission switching system is arranged to drive the rotating shaft to do reciprocating rotation or directional rotation by + / -65 degrees. An inner moving seat capable of moving up and down in a reciprocating mode is connected to the variable-amplitude motion system, the reciprocating stroke of the inner moving seat changes periodically, a rotary table is installed on the rotary shaft, three detection frames are connected to the rotary table in a sliding mode, a connecting rod is hinged between each detection frame and the inner moving seat, and a detection system is arranged on each detection frame. According to the invention, the technical problem that the detection field of view of the existing device is fixed and cannot adapt to the target distance is solved, and full-airspace non-blind area coverage is realized through multi-system linkage cooperation.

The utility model discloses a transmission switching mechanism of a glass deep processing production line. The mounting seat is arranged to provide a mounting foundation; the conversion plate is movably arranged on the mounting seat and is used for receiving and bearing glass in transmission; the driving assembly is arranged to drive the conversion plate to be switched between a horizontal first position and an approximately vertical second position; the switching assembly is arranged to switch the plate surface orientation of the switching plate at the second position; the control assembly is arranged to be matched with the switching assembly and used for controlling the plate face orientation of the switching plate at the second position. The utility model has the following advantages and effects: the utility model has better general adaptability and can improve the processing efficiency of a production line.

The invention discloses an amphibious walking mechanism, and particularly relates to the technical field of amphibious vehicles, the amphibious walking mechanism comprises a vehicle body, two supporting covers are symmetrically arranged at one end of the bottom side of the vehicle body, and two connecting rods are symmetrically and rotatably connected to the other end of the bottom side of the vehicle body. An annular groove is formed in a walking wheel, multiple sets of ground gripping claws are stored in the annular groove in an annular array mode, and multiple sets of positioning columns can be controlled to drive the ground gripping claws to synchronously move inwards or outwards through a connecting base; the two walking wheels can be controlled to deflect to the tail end of the vehicle body and form a paddle wheel structure, so that the vehicle can effectively adapt to running on normal ground, soft or muddy ground, shoal transition and water, multi-mode self-adaptive transmission switching of land and water terrains can be achieved by integrating the walking wheels, the ground gripping claws and the paddle wheel structure into an integrated walking mechanism, operation is convenient and efficient, and the service life of the vehicle is prolonged. Walking is stable and reliable, and the using effect is good.

The invention discloses a high-efficiency generator set for an offshore platform, and belongs to the field of generators, and the high-efficiency generator set comprises a first standby generator assembly which comprises a first diesel engine, a first driving transmission part, a first generator and a first driven transmission part; the second standby generator assembly comprises a second diesel engine, a second driving transmission part, a second generator and a second driven transmission part; the transmission switching piece comprises a first transmission switching piece, a second transmission switching piece and a switching transmission piece, and the first driving transmission piece is selected to be in meshing transmission with the first driven transmission piece through the first transmission switching piece; and the second driving transmission part is selectively in meshing transmission with the second driven transmission part through the second transmission switching part. According to the invention, the automation degree is high, two sets of original standby generator sets can be reasonably configured into four sets of available standby generator sets, the reliability of the standby generator sets and the economical efficiency of the standby generator sets are remarkably improved, and the safety and the economical efficiency of ship navigation are remarkably improved.

The application discloses a conveying belt type end effector for multi-package loading and unloading, which comprises a package loading mechanism, a roller conveying mechanism, a transmission switching device, a transmission mechanism and an intelligent loading module. The package loading mechanism is in a U-shaped structure and is arranged around the top edge of the roller conveying mechanism. The transmission mechanism is arranged at the bottom of the roller conveying mechanism, and the transmission shaft of the transmission mechanism is in transmission connection with the roller conveying mechanism. The transmission switching device is arranged at the bottom of the transmission mechanism, the input end of the transmission switching device is connected with the mechanical arm of an industrial robot, the first output end of the transmission switching device is connected with the shell of the transmission mechanism, and the second output end of the transmission switching device is connected with the transmission shaft of the transmission mechanism. The intelligent loading module is arranged on the roller conveying mechanism. The application can effectively solve the problems of low automation efficiency, waste of a large amount of manpower and resources, inability to connect with a sorting module and inability to match the speed of an automatic sorting link in the existing package unloading link.

The utility model relates to electric window curtain technical field discloses a main transmission case of switchable power output, its technical scheme main points are including box, the box includes upper chamber and lower chamber, is provided with at least one group transmission assembly in upper chamber, and the lower chamber is rotatably connected with the locking piece corresponding with transmission assembly, sets up transmission assembly in upper chamber, sets up locking piece and input component in lower chamber, transmission assembly is separated with input component, and both sides are driven through power pole between both, when the transmission assembly or input component is overhauled and is replaced, will not interfere with each other, under the condition that the output end of curtain motor and input component keep butt joint, if input piece moves up, power pole moves up, and power pole is through switching part and second transmission gear disengages engagement, and is engaged with first transmission gear, and the transmission switching between first transmission gear and second transmission gear is realized through the movement of power pole and cooperation switching part.

The present invention discloses a high-efficiency generator set for an offshore platform, belonging to the field of generators, comprising: a first backup generator assembly including a first diesel engine, a first active transmission member, a first generator, and a first driven transmission member; a second backup generator assembly including a second diesel engine, a second active transmission member, a second generator, and a second driven transmission member; a transmission switching member including a first transmission switching member, a second transmission switching member, and a switching transmission member, wherein the first active transmission member selectively engages with the first driven transmission member for transmission through the first transmission switching member; and the second active transmission member selectively engages with the second driven transmission member for transmission through the second transmission switching member. The present invention has a high degree of automation and can rationally configure the original two backup generator sets into four usable backup generator sets, significantly increasing the reliability and economy of the backup generator sets, and significantly improving the safety and economy of ship navigation.

The invention relates to a transmission arrangement (1) for a motor vehicle comprising: - a housing (G), - an input shaft (2), - a first planetary gear set (4), - a second planetary gear set (9), - an output shaft (3), and - a transmission switching device (K1, K2) for shifting between two gears, - wherein, by means of the transmission switching device (K1, K2), the planet carrier (8) of the first planetary gear set (4) and the output shaft (3) can be connected to each other so that they can rotate together as a unit without different rotational speeds, and can be separated from each other so that they can rotate at different speeds relative to each other, and / or - wherein, by means of the transmission switching device (K1, K2), the planet carrier (8) of the first planetary gear set (4) and the housing (G) can be connected to each other so that they can stand still together as a unit without different rotational speeds, and can be separated from each other.so that they can rotate at different speeds relative to each other. Furthermore, the invention relates to an axle drive device (30) for driving one or more vehicle wheels (F1, F2) of a motor vehicle.

The application provides a hybrid power transmission system, a control method and device, and a vehicle. The system comprises a first motor, an engine, a planetary gear mechanism, a transmission switching mechanism, a first variable speed transmission mechanism, and a first power output mechanism. The transmission switching mechanism comprises a power transmission shaft connected to the first motor, a switching synchronizer rotating synchronously with the power transmission shaft, a first gear, and a second gear. The transmission switching mechanism is used to selectively connect one of the first gear and the second gear to the power transmission shaft by moving the switching synchronizer, or disconnect the first gear and the second gear from the power transmission shaft. The first transmission end of the planetary gear mechanism is connected to the second gear, the second transmission end of the planetary gear mechanism is connected to the engine, and the third transmission end of the planetary gear mechanism is connected to the first variable speed transmission mechanism. The application can realize the switching of different working modes through a simple transmission switching mechanism.

The wind direction adjusting device of the present application is provided with: a ventilation path; a first wing (10) having a rotation axis (A1) in a first direction intersecting the ventilation direction of the ventilation path, changing the wind direction by rotation; a second wing (11) having a rotation axis (A2) in a second direction intersecting the ventilation direction and the first direction, changing the wind direction by rotation; a driving member (25); a first driving part (26) for rotating the first wing by accepting driving force from the driving member; a second driving part (27) having a rotation axis along the first driving part, for rotating the second wing by rotation; and a transmission switching member (28) capable of switching between a transmission state of transmitting the driving force accepted by the first driving part from the driving member to the second driving part and a non-transmission state of not transmitting the driving force accepted by the first driving part from the driving member to the second driving part.

According to the driving device for the heavy-load parallel rope, a servo driver drives a driving gear of a transmission switching module to move, and then two driven gears are driven to move; the two driven gears are respectively mounted on the two winch cable outlet modules to drive the two winch cable outlet modules to move synchronously, so that the two parallel driving ropes are driven to move; a roller shaft of the winch cable outlet module is connected with a roller shaft of the counterweight winch module so as to drive the counterweight winch module, a counterweight traction rope and a counterweight to move; when the two parallel driving ropes need to be adjusted to move relatively, the transmission switching module switches a transmission mode, so that the servo driving movement is only transmitted to one set of winding rope outlet module and the driving rope, and the independent movement of one of the two parallel driving ropes is realized; according to the driving device, the two parallel driving ropes can be driven through single servo drive, adjustment of the relative length of the two parallel driving ropes can be achieved, and meanwhile the torque and power needed under heavy load are reduced through the balance weight.

The invention relates to a transmission switching device and a base station antenna, and the transmission switching device comprises a housing; the gear shifting operation mechanism comprises at least one butt joint gear, a gear shifting driving wheel and an operation driving wheel; the transmission screws can be arranged in the shell in a penetrating mode in the width direction of the shell in a reciprocating motion mode, and the two ends of each transmission screw extend out of the shell; each reversing assembly comprises a reversing wheel and a sleeve which can be meshed with each other, and the sleeve is arranged outside the corresponding transmission screw in a sleeving mode; the gear shifting operation mechanism is configured to drive one of the butt joint gears to be meshed with one of the reversing wheels by rotating the gear shifting driving wheel; and the driving gear rotates to drive the reversing wheel meshed with the butt joint gear to rotate, and then the corresponding transmission screw is driven to move axially under the action of the sleeve. The occupied space in the length direction of the antenna is greatly reduced, and more space is saved for the electrical structure design of the antenna.