阅读说明：本技术 一种冷却塔电动机位置调控装置及方法 (Cooling tower motor position regulating and controlling device and method ) 是由 任超 王远洋 李秋桐 孙永毅 于志翔 于 2021-08-09 设计创作，主要内容包括：本发明公开了一种冷却塔电动机位置调控装置及方法,属于能源技术领域。包括用于带动旋转电机上下移动的升降平台,所述升降平台连接纵向驱动机构,旋转电机的输出轴上开有插槽,叶片转轴上的插舌与所述插槽插入式配合,实现输出轴与叶片转轴的可拆卸连接,插槽和插舌上开有共线的通孔,电控插销与所述通孔插入式配合,电控插销连接电控盒。本发明的有益效果是：电动机位置可以通过电气控制实现塔内的定向移动,快速高效地实现电动机与风机主体的分离、电动机的移动以及电动机的复位连接。(The invention discloses a cooling tower motor position regulating device and method, and belongs to the technical field of energy. Including being used for driving the lift platform that the rotating electrical machines reciprocated, vertical actuating mechanism is connected to lift platform, and it has the slot to open on the output shaft of rotating electrical machines, the epaxial insertion tongue of blade pivot with the bayonet cooperation of slot realizes being connected dismantling of output shaft and blade pivot, and it has collinear through-hole to open on slot and the insertion tongue, automatically controlled bolt with the bayonet cooperation of through-hole, automatically controlled bolt connection automatically controlled box. The invention has the beneficial effects that: the motor position can realize the directional movement in the tower through electrical control, and the separation of the motor and the fan main body, the movement of the motor and the reset connection of the motor are realized quickly and efficiently.)

1. The utility model provides a cooling tower motor position regulation and control device, its characterized in that, including being used for driving lift platform (12) that rotating electrical machines (3) reciprocated, vertical actuating mechanism is connected in lift platform (12), and it has the slot to open on output shaft (21) of rotating electrical machines (3), on blade pivot (2) insert the tongue with the bayonet cooperation of slot realizes dismantling of output shaft (21) and blade pivot (2) and is connected, and it has the collinear through-hole to open on slot and the tongue of inserting, automatically controlled bolt (20) with the bayonet cooperation of through-hole, automatically controlled box (19) are connected to automatically controlled bolt (20).

2. The cooling tower motor position control device according to claim 1, characterized in that the rotating motor (3) is fixed on a moving platform (6), the moving platform (6) is provided with a transverse driving mechanism for driving the moving platform to move on a rail (7) of the cross beam (5), the rail (7) is positioned on the cross beam (5) and a lifting platform (12), the side part of the cross beam (5) is provided with a longitudinal beam a (9.1) and a longitudinal beam b (9.2), and the lifting platform (12) slides up and down between the longitudinal beam a (9.1) and the longitudinal beam b (9.2) through a longitudinal driving mechanism.

3. The cooling tower motor position control device according to claim 2, wherein the transverse driving mechanism comprises a servo motor (4) fixed on the moving platform (6), an output end of the servo motor (4) penetrates through the support table (22) and is connected with a synchronous belt (23), the synchronous belt is connected with a synchronous belt pulley (28) located at the bottom of the moving platform (6), the synchronous belt pulley is fixedly connected with a transmission shaft (27), two ends of the transmission shaft (27) are connected with rail wheels (26), and the rail wheels (26) are located on the rail (7) and are rotatably connected to the bottom of the moving platform (6).

4. The cooling tower motor position control device according to claim 2, wherein the longitudinal driving mechanism comprises a traction motor a (18.1) fixed on a fixed mounting plate (24), the output end of the traction motor a (18.1) is connected with a traction wheel a (14.1) through a reduction gearbox a (17), a guide wheel a (13.1) is rotatably connected on the mounting plate 24, one end of a lifting stay cord a (10.1) is connected with the lifting platform (12), the lifting stay cord a (10.1) is wound around the traction wheel a (14.1) and the guide wheel a (13.1) to be connected with a counterweight (8), the counterweight (8) is vertically and slidably connected on a sliding rail of a longitudinal beam b (9.2), rollers (11) are arranged on two sides of the lifting platform (12), and the rollers (11) on two sides are respectively and are in rolling connection with guide grooves on the longitudinal beam a (9.1) and the longitudinal beam b (9.2).

5. The cooling tower motor position regulating and controlling device according to claim 2, characterized in that a clamping groove (25) is arranged at the end of the moving platform (6), a stopper (16) is arranged on the cross beam (5), and the stopper (16) is detachably clamped with the clamping groove (25).

6. The cooling tower motor position control device according to claim 1, wherein a plurality of fan blades (1) are uniformly distributed on the blade rotating shaft (2), the blade rotating shaft (2) is rotatably connected with a fan bracket (15) through a bearing, and the fan bracket (15) is fixed on a tower frame of the cooling tower.

7. The cooling tower motor position adjustment device of claim 1, wherein the longitudinal drive mechanism comprises, a lifting platform (12) used for fixing a rotating motor (3), wherein rollers (11) are arranged on two sides of the lifting platform (12), the rollers (11) on the two sides are respectively connected with guide grooves on a longitudinal beam a (9.1) and a longitudinal beam b (9.2) in a rolling manner, lifting pull ropes b (10.2) and c (10.3) are respectively connected with two opposite sides of the lifting platform (12), the lifting pull ropes b (10.2) and c (10.3) respectively extend downwards through guide wheels b (13.2) at the tops of the longitudinal beams a (9.1) and b (9.2) and then respectively extend through guide wheels c (13.3) at the inner bottoms of the longitudinal beams a (9.1) and b (9.2), the traction sheave b (14.2) is connected with the same winding direction, and the traction sheave b (14.2) is connected with the traction motor b (18.2) through the reduction box b.

8. The cooling tower motor position control device according to claim 7, characterized in that a support plate (29) for supporting the lifting platform (12) is rotatably connected to the longitudinal beam a (9.1) and the longitudinal beam b (9.2), the support plate (29) is connected with a driving rotating rod, and the bottom of the driving rotating rod is connected with a driving handle (30).

9. The cooling tower motor position control device according to claim 7, characterized in that an operating platform (31) is arranged at the bottom between the longitudinal beam a (9.1) and the longitudinal beam b (9.2), and the operating platform (31) is positioned above the traction motor b (18.2).

10. Cooling tower motor position regulation according to claim 7, characterized in that the output of the traction motor b (18.2) is fitted with a brake clasping device.

Technical Field

The invention relates to a cooling tower motor position regulating device and a regulating method thereof, belonging to the technical field of energy.

Background

A cooling tower is a cooling device that transfers heat carried by cooling water to air through a heat exchange process of direct or indirect contact and emits the heat to the atmosphere. The cooling tower is widely applied to the fields of petrifaction, metallurgy, electric power, air conditioning, refrigeration, plastic cement, food, medical treatment and the like, is used for removing industrial and commercial waste heat and recycling industrial water, and has a very wide market prospect. The market scale of the cooling tower in China is increased year by year and rapidly developed, and the retail market in 2018 is over 650 billion yuan. The market of the cooling tower is not distinguished from the factors of policy, technology, economy, society and the like.

In order to meet the requirements under different scenes, cooling towers are various in types, and from the perspective of a cooling tower ventilation mode, the cooling towers can be divided into a natural ventilation cooling tower, a mechanical ventilation cooling tower and a mixed ventilation cooling tower, wherein the mechanical ventilation cooling tower has the characteristics of stable ventilation, low investment cost, strong cooling capacity and the like, and is widely applied to the industrial and commercial fields. Mechanical draft cooling tower generally comprises tower body, fan unit, defroster, spraying system, heat transfer system, catch basin etc. and wherein the fan unit produces the air of high velocity of flow, stationary flow volume as mechanical draft cooling tower's key part through consuming electric energy, directly influences cooling tower's cooling efficiency. However, as a high-speed operation component in the cooling tower, the frequency of failure of the fan unit in operation is high, and the fan unit needs to be well maintained and repaired, otherwise, the operation energy consumption, stable operation and accident potential of the cooling tower are directly influenced.

The commercial cooling tower of tradition worker is mostly by three-phase asynchronous motor driven deciding rotational speed type product, still must be connected through collocation belt drive decelerator between motor and the fan blade. In order to adapt to the variable working condition operation to achieve the purpose of energy saving, in recent years, a variable-rotating-speed direct-drive cooling tower driven by a permanent magnet synchronous motor is rapidly developed. A direct-drive transmission fan unit mainly comprises a motor, a transmission shaft, blades and other parts. The working environment of the fan in the tower body is worse than the natural environment, and the fan is long and high in running and variable in rotating speed, so that the problem of accessory damage is easily caused. In particular, the motor has a high failure probability, which affects the operation efficiency of the cooling tower, and causes a sudden failure shutdown of the unit. The maintenance is carried out to the fan unit that reaches several hundred kilograms to heavily, relies on artifical climbing into the tower, and high altitude construction now mostly still can involve operations such as dismantlement, hoist and mount, repacking, and time cost and economic cost are very high.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a cooling tower motor position regulating device so as to achieve the purposes of convenient installation, position regulation and maintenance of a motor.

The technical scheme of the invention is as follows: the utility model provides a cooling tower motor position regulation and control device, is including being used for driving the lift platform that the rotating electrical machines reciprocated, vertical actuating mechanism is connected to lift platform, and it has the slot to open on the output shaft of rotating electrical machines, and the epaxial insertion tongue of blade pivot with the bayonet cooperation of slot realizes being connected dismantling of output shaft and blade pivot, and it has collinear through-hole to open on slot and the insertion tongue, automatically controlled bolt with the bayonet cooperation of through-hole, automatically controlled bolt connection automatically controlled box.

The rotary motor is fixed on the movable platform, the movable platform is provided with a transverse driving mechanism for driving the movable platform to move on the rail of the cross beam, the rail is positioned on the cross beam and the lifting platform, the side part of the cross beam is provided with a longitudinal beam a and a longitudinal beam b, and the lifting platform slides up and down between the longitudinal beam a and the longitudinal beam b through the longitudinal driving mechanism.

Horizontal actuating mechanism includes, fixes the servo motor on moving platform, and servo motor's output runs through a supporting bench and connects the hold-in range, and the hold-in range connection is located the synchronous pulley of moving platform bottom, synchronous pulley and transmission shaft fixed connection, and the rail wheel is connected at the transmission shaft both ends, the rail wheel is located just rotate on the track and connect in the moving platform bottom.

The longitudinal driving mechanism comprises a traction motor a fixed on a fixed mounting plate, the output end of the traction motor a is connected with a traction wheel a through a reduction gearbox a, a guide wheel a is rotatably connected on the mounting plate, one end of a lifting pull rope a is connected with a lifting platform, the lifting pull rope a is wound around the traction wheel a and the guide wheel a to be connected with a counterweight, the counterweight is vertically and slidably connected on a slide rail of a longitudinal beam b, rollers are arranged on two sides of the lifting platform, and the rollers on the two sides are respectively connected with guide grooves on the longitudinal beam a and the longitudinal beam b in a rolling mode.

The movable platform end is equipped with the draw-in groove, is equipped with the stopper on the crossbeam, stopper and draw-in groove detachable joint.

A plurality of fan blades are uniformly distributed on the blade rotating shaft, the blade rotating shaft is rotatably connected with a fan bracket through a bearing, and the fan bracket is fixed on a tower frame of the cooling tower.

The longitudinal driving mechanism comprises a lifting platform used for fixing a rotating motor, rollers are arranged on two sides of the lifting platform, the rollers on the two sides are respectively connected with guide grooves on a longitudinal beam a and a longitudinal beam b in a rolling mode, a lifting pull rope b and a lifting pull rope c are respectively connected with two opposite sides of the lifting platform, the lifting pull rope b and the lifting pull rope c respectively extend downwards by winding around a guide wheel b at the top of the longitudinal beam a and a guide wheel c at the bottom in the longitudinal beam a and the longitudinal beam b, and are connected with a traction wheel b in the same winding direction, and the traction wheel b is connected with a traction motor b through a reduction gearbox b.

The longitudinal beams a and b are rotatably connected with supporting plates used for supporting the lifting platform, the supporting plates are connected with driving rotating rods, and the bottoms of the driving rotating rods are connected with driving handles.

And an operating platform is arranged at the bottom between the longitudinal beam a and the longitudinal beam b and is positioned above the traction motor b.

And a brake holding device is installed at the output end of the traction motor b.

The invention has the beneficial effects that: (1) the motor position can realize directional movement in the tower through electrical control, and the separation of the motor and the fan main body, the movement of the motor and the reset connection of the motor are quickly and efficiently realized; (2) the fan main body is matched with the fan bracket through a bearing, so that the fixation of the axis position during high-speed rotation is ensured, and the vibration and the rotor eccentricity are reduced; (3) the position of the motor is convenient and adjustable, the assistance of other large-scale machines or equipment is not required to be adjusted, the high-altitude operation risk is avoided, and the maintenance and overhaul work can be completed only by trained maintenance technicians; (4) when the cooling tower is in a non-running state for a long time, the motor can be separated from the fan main body and adjusted to a proper position capable of being shielded, and the damage risk of the motor is reduced.

Drawings

FIG. 1 is a side sectional view of example 1 of the present invention;

FIG. 2 is a perspective view of embodiment 1 of the present invention;

FIG. 3 is an enlarged view of a part of embodiment 1 of the present invention;

FIG. 4 is a partial enlarged view of an output shaft of the rotating electric machine

FIG. 5 is a side sectional view of embodiment 2 of the present invention;

fig. 6 is a partial view of embodiment 2 of the present invention.

In the figure: 1. fan blades, 2, blade rotating shafts, 3, rotating motors, 4, servo motors, 5, cross beams, 6, moving platforms, 7, rails, 8, counterweights, 9.1, longitudinal beams a, 9.2, longitudinal beams b, 10.1, lifting pull ropes a, 10.2, lifting pull ropes b, 10.3, lifting pull ropes c, 11, rollers, 12, lifting platforms, 13.1, guide wheels a, 13.2, guide wheels b, 13.3, guide wheels c, 14.1, traction wheels a, 14.2, traction wheels b, 15, fan supports, 16, stoppers, 17, reduction gear boxes a, 18.1, traction motors a, 18.2, traction motors b, 19, electric control boxes, 20, electric control pins, 21, output shafts, 22, supporting tables, 23, synchronous belts, 24, fixed mounting plates, 25, clamping grooves, 26, rail wheels, 27, transmission shafts, 28, synchronous pulleys, 29, supporting plates, 30, driving handles, 31 and operating platforms.

Detailed Description

Example 1

The invention is further illustrated with reference to the accompanying figures 1 to 4:

the utility model provides a cooling tower motor position regulation and control device, is including being used for driving the lift platform 12 that rotating electrical machines 3 reciprocated, vertical actuating mechanism is connected to lift platform 12, and it has the slot to open on rotating electrical machines 3's the output shaft 21, on the blade pivot 2 insert the tongue with the bayonet cooperation of slot realizes output shaft 21 and blade pivot 2 can dismantle and be connected, and it has collinear through-hole to open on slot and the tongue, automatically controlled bolt 20 with the bayonet cooperation of through-hole, automatically controlled box 19 is connected to automatically controlled bolt 20. The rotary motor 3 is fixed on the movable platform 6, a transverse driving mechanism for driving the movable platform 6 to move on the rail 7 of the cross beam 5 is arranged on the movable platform 6, the rail 7 is positioned on the cross beam 5 and the lifting platform 12, the longitudinal beam a9.1 and the longitudinal beam b9.2 are arranged on the side portion of the cross beam 5, and the lifting platform 12 slides up and down between the longitudinal beam a9.1 and the longitudinal beam b9.2 through the longitudinal driving mechanism. Horizontal actuating mechanism includes, fixes servo motor 4 on moving platform 6, and servo motor 4's output runs through a supporting bench 22 and connects hold-in range 23, and hold-in range connection is located the synchronous pulley 28 of moving platform 6 bottom, synchronous pulley and 27 fixed connection of transmission shaft, and rail wheel 26 is connected at 27 both ends of transmission shaft, rail wheel 26 is located just rotate to be connected in moving platform 6 bottom on the track 7. The longitudinal driving mechanism comprises a traction motor a18.1 fixed on a fixed mounting plate 24, a braking and holding device is mounted on an output shaft 21 of the traction motor a18.1, the output end of the traction motor a18.1 is connected with a traction wheel a14.1 through a reduction gearbox a17, a guide wheel a13.1 is rotatably connected on the mounting plate 24, one end of a lifting pull rope a10.1 is connected with a lifting platform 12, the lifting pull rope a10.1 is wound around the traction wheel a14.1 and the guide wheel a13.1 to be connected with a counterweight 8, the counterweight 8 is vertically and slidably connected on a slide rail of a longitudinal beam b9.2, rollers 11 are arranged on two sides of the lifting platform 12, and the rollers 11 on two sides are respectively connected with guide grooves on the longitudinal beam a9.1 and the longitudinal beam b9.2 in a rolling manner. The end part of the moving platform 6 is provided with a clamping groove 25, the crossbeam 5 is provided with a stopper 16, and the stopper 16 is detachably clamped with the clamping groove 25. The lateral movement of the mobile platform 6 is limited. A plurality of fan blades 1 are uniformly distributed on the blade rotating shaft 2, the blade rotating shaft 2 is rotatably connected with a fan support 15 through a bearing, and the fan support 15 is fixed on a tower of the cooling tower. When the fan unit operates stably, the servo motor 4 stops operating, the moving platform 6 is fixed on the cross beam 5, the output shaft 21 of the rotating motor 3 is connected with the blade rotating shaft 2 to drive the fan blade 1 to rotate, the inserting tongue at the end part of the blade rotating shaft 2 is positioned in the inserting groove of the output shaft 21 and is fixed through the electric control bolt 20, the electric control bolt 20 is controlled by the electric control box 19, the electric control bolt 20 is a normally closed element, namely the electric control bolt 20 is inserted into the holes of the motor output shaft 21 and the blade rotating shaft 2 to limit the relative movement of the motor output shaft 21 and the blade rotating shaft 2 when the motor unit is in an unpowered state, the electric control bolt 20 can be automatically pulled out when the motor unit is powered on, and the output shaft 21 can be separated from the blade rotating shaft 2. Fan support 15 is fixed in the tower body with the fan main part, is favorable to guaranteeing that the fixed of transmission shaft axle center position when fan blade 1 is high-speed rotatory, reduces vibration and drive disk assembly's wearing and tearing, avoids motor rotor eccentric to realize the long-time steady operation of fan unit, simultaneously, fan support 15 plays the effect of supporting the fan main part when the motor breaks away from.

Embodiment 1 a motor position control method is as follows:

in the first step, the connection between the rotary electric machine 3 and the fan main body is disconnected.

The operation of the fan assembly should be stopped first. The rotating electrical machine 3 is then slowly rotated, adjusting the angle until the slot of its output shaft 21 remains parallel to the cross beam 5. At this moment, the electric control bolt 20 can be electrified and pulled out, the fan blade 1 and the blade rotating shaft 2 are connected with the cooling tower body through the fan bracket 15, the position of the fan unit main body is guaranteed to be unchanged, and the rotating motor 3 is disconnected from the fan unit main body.

In the second step, the rotary motor 3 is moved laterally to the lifting platform 12.

The rotary motor 3 is fixed to the movable platform 6 by a flange, and the output shaft of the servomotor 4 is connected to a transmission shaft 27 and a track wheel 26 via a timing belt 23 and a timing pulley 28. The moving platform 6 is placed on a beam 5, on which beam 5 a rail 7 is mounted. The side of the rail 7 in the middle of the beam is provided with a stopper 16, and when the stopper is inserted into a clamping groove 25 of the movable platform 6, the fixable movable platform 6 can be fixed. The end of the beam 5 is connected to the rail of the lifting platform 12. After the rotating motor 3 is disconnected from the fan main body, the servo motor 4 is electrified to rotate forward, the output shaft drives the synchronous belt wheel 28 and the transmission shaft 27 to rotate through the synchronous belt 23, the track wheel 26 is driven to move along the track 7, the clamping groove 25 is separated from the limiting stopper 16 and finally reaches the lifting platform 12, the servo motor 4 is powered off, and the moving platform 6 stops moving.

And thirdly, the motor and the moving platform move along the longitudinal beam along with the lifting platform to reach the designated height.

The rollers 11 are installed on two sides of the lifting platform 12, and the rollers 11 are matched with guide grooves in the longitudinal beam a9.1 and the longitudinal beam b9.2, so that the lifting platform 12 can not shift or swing when moving up and down along the longitudinal beam a9.1 and the longitudinal beam b9.2, and the stable operation of the lifting platform is kept. The lifting rope a10 is wound on the traction sheave a14.1 and then connected with the counterweight 8 through the guide wheel a13.1, and the counterweight 8 is also provided with rollers which are matched with the longitudinal beam a9.1 and the longitudinal beam b9.2 to prevent the counterweight 8 from deviating and swinging. The counterweight 8 is used for balancing the whole weight of the rotating motor 3, the moving platform 6 and the lifting platform 12, and the proper counterweight is selected according to weight matching, so that the rated power and the actual energy consumption of the traction motor a18.1 can be effectively reduced. The power for the lifting platform to move up and down is provided by a traction motor a18.1 connected with a traction wheel a14.114, a brake wheel is arranged on a transmission shaft of the traction motor a18.1, and the brake wheel is tightly held when no current exists, so that the output shaft 21 is ensured not to rotate; when the power is on, the brake wheel is invalid, and the output shaft 21 works normally. The traction motor a18.1 reduces the rotation speed of the output shaft through a reduction box a17 to drive the traction sheave a14.1 to rotate, and the traction force is provided for the lifting platform 12 by the friction force of the lifting pull rope a10 and the traction sheave a 14.1. The guide wheel a13.1, the traction wheel a14.1, the reduction box a17 and the traction motor a18.1 can be integrally arranged in the tower body of the cooling tower or outside the tower body of the cooling tower. When the cooling tower is internally arranged, the whole consistency of the cooling tower is better, and an outer cover is not required to be arranged; when the traction device is arranged externally, the traction device can be supported by the tower body, and the number of longitudinal beams required in the tower is reduced.

After the mobile platform 6 runs to the lifting platform 12, the traction motor a18.1 is electrified to rotate positively, and the brake wheel has no braking function. Because the output shaft has a higher rotating speed, the speed is adjusted to a proper rotating speed through the reduction box a' 17, and the traction sheave a14.1 and the lifting pull rope a10.1 thereon are driven to rotate. The lifting pull rope a10 drives the lifting platform 12 to descend, the counterweight 8 ascends, and the lifting platform 12 and the counterweight 8 are kept stable due to the matching of the roller 11 and the longitudinal beam groove. When the height specified by a user is reached, the power supply of the traction motor a18.1 is disconnected, the operation is stopped, the brake wheel is tightly held due to power failure, the output shaft of the traction motor a18.1 is fixed, and the lifting rope a10.1 pulls the lifting platform 12 to be fixed. The movable platform 6 on the lifting platform 12 can stably move along with the lifting platform 12 by means of the matching of the rail wheels 26 and the rails 7 and the limiting effect of the longitudinal beams on the two sides. When the whole set of device is positioned at the height designated by a user, the three-dimensional overhaul and maintenance can be carried out on the motor. And after the related work is finished, the fourth step is carried out.

And fourthly, moving the rotating motor 3 and the moving platform 6 back to the original position, and completing connection with the fan main body.

And returning the rotating motor 3 and the mobile platform 6 according to the original path, recovering the initial position, and completing connection with the fan main body to achieve preparation work for normal operation of the fan unit. The rotating motor 3 and the moving platform 6 are stably checked to be positioned on the lifting platform 12, then the traction motor a18.1 is electrified and reversely rotated to drive the traction wheel a14.1 to rotate, the lifting platform 12 is driven to ascend to the position with the same height as the cross beam 5 through the lifting pull rope a10, the traction motor a18.1 is powered off to stop working, and the brake wheel is tightly held. The servo motor 4 is powered on and rotates reversely, the transmission shaft 24 is driven through the synchronous belt 23, and the moving platform 6 enters the track 7 of the cross beam 5. After the stopper 16 is matched with the clamping groove 25, the servo motor is powered off, the moving platform 6 stops moving and is fixed in position, and at the moment, the tail end of the blade rotating shaft 2 enters the groove of the output shaft 21 of the rotating motor 3 and is fixed through the electric control bolt 20. Therefore, the convenient regulation and control of the fan position are completely completed, and the fan unit can start to work after the fan position is checked to be correct.

Example 2

The invention is further described with reference to figures 4-6 below:

the utility model provides a cooling tower motor position regulation and control device, is including being used for driving the lift platform 12 that rotating electrical machines 3 reciprocated, vertical actuating mechanism is connected to lift platform 12, and it has the slot to open on rotating electrical machines 3's the output shaft 21, on the blade pivot 2 insert the tongue with the bayonet cooperation of slot realizes output shaft 21 and blade pivot 2 can dismantle and be connected, and it has collinear through-hole to open on slot and the tongue, automatically controlled bolt 20 with the bayonet cooperation of through-hole, automatically controlled box 19 is connected to automatically controlled bolt 20. The longitudinal driving mechanism comprises a lifting platform 12 used for fixing the rotating motor 3, wherein the two sides of the lifting platform 12 are respectively provided with a roller 11, the rollers 11 on the two sides are respectively connected with a guide groove on a longitudinal beam a9.1 and a longitudinal beam b9.2 in a rolling manner, the two opposite sides of the lifting platform 12 are respectively connected with a lifting pull rope b10.2 and a lifting pull rope c10.3, the lifting pull rope b10.2 and the lifting pull rope c10.3 respectively extend downwards by winding around a guide wheel b13.2 at the top of the longitudinal beam a9.1 and the longitudinal beam b9.2, then respectively wind around a guide wheel c13.3 at the inner bottom of the longitudinal beam a9.1 and the longitudinal beam b9.2, and are connected with a traction wheel b14.2 in the same winding direction, and the traction wheel b14.2 is connected with a traction motor b18.2 by a reduction gearbox b. And the longitudinal beam a9.1 and the longitudinal beam b9.2 are rotatably connected with a supporting plate 29 for supporting the lifting platform 12, the supporting plate 29 is connected with a driving rotating rod, and the bottom of the driving rotating rod is connected with a driving handle 30. The driving rotating rod and the supporting plate 29 are driven to rotate by the driving handle 30, when the fan unit runs stably, the supporting plate 29 is located below the lifting platform 12 to play a supporting role, an operating platform 31 is arranged at the bottom between the longitudinal beam a9.1 and the longitudinal beam b9.2, and the operating platform 31 is located above the traction motor b 18.2. And a brake holding device is arranged at the output end of the traction motor b 18.2.

Embodiment 2 motor position control method as follows:

in the first step, the connection between the rotary electric machine 3 and the fan main body is disconnected. This step is the same as in example 1 and will not be described again.

And secondly, moving the rotating motor 3 along the longitudinal beam along with the lifting platform to reach the height specified by the user.

The rollers 11 are installed on two sides of the lifting platform 12 and are matched with the guide grooves in the longitudinal beam 9, so that the lifting platform 12 can move up and down stably along the longitudinal beam. Meanwhile, a lifting pull rope b10.2 and a lifting pull rope c10.3 are arranged on two opposite sides of the lifting platform 12, and the lifting pull rope b10.2 and the lifting pull rope c10.3 are connected with a traction wheel b14.2 in the same winding direction through guide wheels arranged at the upper end of the longitudinal beam and in the beam. The traction wheel b14.2 is driven by a traction motor through a reduction gearbox, a brake wheel is arranged on a transmission shaft of the traction motor b18.2, the brake wheel is tightly held when no current exists, the motor is ensured not to rotate, the brake wheel fails when the current is supplied, and the traction motor b18.2 normally works. When the traction sheave b14.2 rotates, the lifting pull rope b10.2 and the lifting pull rope c10.3 are driven by friction force to provide traction for the lifting platform 12. The whole cooling tower bottom of arranging in of traction device can be according to actual conditions certain high installation operation platform 31 on the system of towing, can provide suitable arrangement height for rotating electrical machines 3 and lift platform 12 on the one hand, makes things convenient for operations such as artifical maintenance, and on the other hand prevents that lift platform 12's displacement is excessive, the damage of system of towing with higher speed.

The driving handle 30 is rotated to drive the rotating rod to rotate the supporting plate 29 to the outside of the lifting platform 12. The traction motor b18.2 is electrified to rotate forwards, and drives the traction sheave b14.2, the lifting pull rope b10.2 and the lifting pull rope c10.3 to pull the lifting platform 12 to descend. The lifting platform 12 is matched with the groove surface of the longitudinal beam 9 through the roller 11, so that the platform is prevented from inclining and swinging. When the specified height or the operating platform 31 is reached, the traction motor b18.2 is powered off, and the brake wheel is held tightly.

And thirdly, moving the rotating motor 3 and the moving platform back to the original position, and completing connection with the fan main body.

The traction motor b18.2 is electrified and reversely rotated to drive the traction wheel b14.2, the lifting pull rope b10.2 and the lifting pull rope c10.3 to pull the lifting platform 12 to ascend through the guide wheel, and when the initial height of the rotating motor 3 is reached, the traction motor is powered off, and the brake wheel is tightly held. The handle 30 is rotated to rotate the support plate 29 inside the lift platform 12 to provide support for the lift platform 12. At this time, the tail end of the blade rotating shaft 2 enters the groove of the output shaft 21 of the rotating motor 3 and is fixed through the electric control bolt 20. Therefore, the convenient regulation and control of the fan position are completely completed, and the fan unit can start to work after the fan position is checked to be correct.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.