A damper drive

Abstract

The application discloses a damper driver and relates to the technical field of ventilation control. The damper driver comprises a valve body, fixing frames are fixedly connected to two ends of the valve body, a connecting rod is fixedly connected between the fixing frames, fixing tools are fixedly connected to the side walls of the fixing frames, a controller is installed on the side wall of the fixing tool, and an electric motor is installed in the fixing tool. The damper driver has the following advantages: the electric motor rotates by 1 degree when rotating by 1 circle, so that the ordinary electric motor reaches the effect of the stepping motor; the stepping angle of the blade is 1 degree, the adjusting range of the blade is expanded, the blade adjustment can adapt to the requirements of various use environments, the ventilation volume adjusting precision of the damper is improved, the use effect is improved, the ordinary electric motor can drive the blade to rotate forward and reversely, the disadvantages of the stepping motor are avoided, the failure rate of the equipment is reduced, the influence of the environment and the system does not need to be considered, the service life of the device is prolonged, and the cost investment of the device is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ventilation control, in particular to a damper driver. BACKGROUND

[0002] The electric damper is a device that controls the air flow, direction or realizes the on-off by driving the blade to open and close, and the driver is a power device that drives the damper blade to rotate, which receives the control signal and converts it into mechanical movement. In order to realize the opening and closing of the damper blade, the existing driver generally adopts a stepping motor to participate in control to achieve the purpose of forward and reverse rotation. The system complexity of the stepping motor is high, the environmental requirements are high, it is easy to be disturbed, it is easy to produce faults during long-term use, it is not as durable as ordinary motor, and the price is also much higher than that of ordinary motor. The above-mentioned disadvantages will be transferred to the electric damper.

[0003] In addition to the above problems, the common step angle of the stepping motor is 1.8° pitch angle, that is, it rotates 1.8° per step, so the angle adjustment of the blade rotation can only be selected in multiples of 1.8°, which greatly limits the range of blade rotation, so that the conventional stepping motor cannot adapt to the use demand, and other angle-free adjustment cannot accurately adjust the angle of each rotation, so that the ventilation volume regulation accuracy of the damper is low, which affects the use effect.

[0004] Through retrieval, the patent application CN110131459B discloses a damper driver, which has the effects of identification, convenient adjustment and dust cleaning to increase the service life, but it cannot solve the above-mentioned problems. SUMMARY

[0005] The purpose of the present application is to provide a damper driver to solve the problems in the background art.

[0006] The application provides the following technical scheme: a damper driver, comprising a valve body, fixed frames are fixedly connected to two ends of the valve body, a connecting rod is fixedly connected between the fixed frames, a fixing tool is fixedly connected to the side wall of the fixed frame, a controller is installed on the side wall of the fixing tool, an electric motor is installed in the fixing tool, a worm is fixedly connected to the output end of the electric motor, a worm wheel is meshingly connected to the outer surface of the worm, one end of a first rotating shaft is fixedly connected to the central axis of the worm wheel, a main bevel gear is fixedly connected to the other end of the first rotating shaft, a sub bevel gear is meshingly connected to the outer surface of the main bevel gear, one end of a second rotating shaft is fixedly connected to the central axis of the sub bevel gear, a driving gear is fixedly connected to the other end of the second rotating shaft, a driven gear is meshingly connected to the outer surface of the driving gear, one end of a third rotating shaft is fixedly connected to the central axis of the driven gear, a transmission bevel gear is fixedly connected to the other end of the third rotating shaft, a planetary bevel gear is meshingly connected to the outer surface of the transmission bevel gear, a driven bevel gear is meshingly connected to the outer surface of the planetary bevel gear, one end of a transmission shaft is fixedly connected to the central axis of the driven bevel gear, a bevel gear ring is fixedly connected to the other end of the transmission shaft, a linkage bevel gear is meshingly connected to the outer surface of the bevel gear ring, a rotating rod is fixedly connected to the central axis of the linkage bevel gear, and a blade is fixedly connected to the top end of the rotating rod.

[0007] As a further scheme of the application, a first inner cavity is formed in the connecting rod, a second inner cavity is formed in the fixed frame, the transmission shaft and the bevel gear ring are rotationally sleeved with the first inner cavity, the linkage bevel gear and the rotating rod are rotationally sleeved with the connecting rod, the linkage bevel gear, the rotating rod and the blade are provided in plurality, and the plurality of linkage bevel gears, the plurality of rotating rods and the plurality of blades are uniformly distributed about the central axis of the transmission shaft.

[0008] As a further scheme of the application, the connecting rod is rotationally connected with the valve body, a support is fixedly connected to the fixing tool, the support is rotationally sleeved with the first rotating shaft, the worm wheel has 120 teeth, the worm has 1 head, the driving gear has 20 teeth, the driven gear has 120 teeth, the main bevel gear and the sub bevel gear have the same number of teeth, and the transmission ratio of the bevel gear ring and the linkage bevel gear is 1:2.

[0009] As a further scheme of the application, the second rotating shaft is rotationally connected with the side wall of the fixed frame, the third rotating shaft is rotationally sleeved with the side wall of the fixed frame, and the third rotating shaft extends into the second inner cavity.

[0010] As a further scheme of the application, the transmission bevel gear, the planetary bevel gear and the driven bevel gear are sleeved in the second inner cavity, and the end of the transmission shaft extends into the second inner cavity.

[0011] As a further scheme of the present application: the inner surface of the second inner cavity is provided with an annular groove, a slip ring is sleeved in the annular groove, a fourth rotating shaft is rotationally connected to the inner surface of the slip ring, the outer surface of the fourth rotating shaft is fixedly connected with the planetary bevel gear, the top surface of the fourth rotating shaft is provided with an embedding groove, a first closed cavity and a second closed cavity are formed in the slip ring, a piston disc is slidably sleeved in the first closed cavity, an embedding rod is fixedly connected to the bottom surface of the piston disc, a return spring is fixedly connected between the piston disc and the bottom wall of the first closed cavity, a piston rod is slidably sleeved in the second closed cavity, an electric push rod is mounted on the inner surface of the annular groove, and a pressing ring is fixedly connected to the output end of the electric push rod.

[0012] As a further scheme of the present application: the second closed cavity is located outside the first closed cavity and communicates with the first closed cavity, the embedding rod is embeddedly connected with the bottom wall of the first closed cavity and is clamped with the embedding groove, and the return spring is sleeved outside the embedding rod.

[0013] As a further scheme of the present application: the top end of the piston rod is slidably connected with the top wall of the second closed cavity, and the top end of the piston rod extends into the annular groove, the electric push rod and the pressing ring are both provided with two, and the two electric push rods and the two pressing rings are symmetrically arranged about the third rotating shaft, and the pressing ring is slidably connected with the annular groove.

[0014] By adopting the above technical scheme: compared with the prior art, the present application has the following beneficial effects:

[0015] The worm is rotated by the motor, the worm wheel is rotated by the worm, the main bevel gear is rotated by the first rotating shaft, the driven bevel gear is rotated by the main bevel gear, the second rotating shaft is rotated by the driven bevel gear, the driven gear is rotated by the driving gear, the third rotating shaft is rotated by the driven gear, the transmission bevel gear is rotated by the third rotating shaft, the transmission ratio of the worm and the worm wheel is 120:1, the transmission ratio of the driving gear and the driven gear is 6:1, the transmission ratio of the main bevel gear and the driven bevel gear is 1, the transmission ratio of the bevel gear and the linkage bevel gear is 1:2, the transmission shaft is rotated by the driven gear, the linkage bevel gear is rotated by the bevel gear, the rotating lever is rotated by the linkage bevel gear, and the blade is rotated by the rotating lever.

[0016] The electric push rod is retracted by the controller, the pressure ring is slid, the two pressure rings are separated, the restriction of the pressure ring on the piston rod is released, the high-pressure gas at the bottom end of the second sealed cavity pushes the piston rod to rise, the air pressure at the top end of the first sealed cavity is reduced, the piston disc rises under the rebound of the return spring, the embedded rod on the piston disc is separated from the embedded groove, the fixation of the fourth rotating shaft and the planetary bevel gear is released, the rotation of the transmission bevel gear can drive the planetary bevel gear to rotate, the other side of the planetary bevel gear can drive the driven bevel gear to rotate reversely, the rotating direction of the driven bevel gear is opposite to that of the driven bevel gear, the blade is indirectly rotated, the electric air door is closed, the electric push rod is reset to lock the blade, the above process can be repeated, the ordinary motor can drive the blade to rotate forward and reversely, the disadvantages of the stepping motor are avoided, the failure rate of the equipment is reduced, the influence of the environment and the system is not considered, the service life of the device is improved, and the cost investment of the device is reduced.

[0017] After the blade is adjusted, the blade has a tendency of rotating or further opening under the influence of wind pressure or other factors, according to the above principle, the worm gear has a tendency of rotating, and the worm gear and the worm have self-locking property, the worm gear cannot drive the worm to rotate, thus the blade cannot rotate under the influence of wind pressure or other factors, the purpose of automatically locking the blade is achieved, and no other limiting mechanism is needed to participate in control. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the damper driver of the application;

[0019] Figure 2 It is a half-section schematic diagram of the valve body structure of the application;

[0020] Figure 3 It is Figure 2 an enlarged view of the structure of part A;

[0021] Figure 4 It is Figure 2 an enlarged view of the structure of part B;

[0022] Figure 5 It is a schematic diagram of the driven gear structure of the application;

[0023] Figure 6 It is a schematic diagram of the compression ring structure of the application;

[0024] Figure 7 It is a half-section schematic diagram of the fixed frame structure of the application;

[0025] Figure 8 It is Figure 7 an enlarged view of the structure of part C;

[0026] Figure 9 It is a schematic diagram of the fixed tool structure of the application.

[0027] In the figure: 1, valve body; 2, fixed frame; 3, connecting rod; 4, fixed tool; 5, controller; 6, motor; 7, worm; 8, worm gear; 9, first rotating shaft; 10, main bevel gear; 11, auxiliary bevel gear; 12, second rotating shaft; 13, driving gear; 14, driven gear; 15, third rotating shaft; 16, transmission bevel gear; 17, planet bevel gear; 18, driven bevel gear; 19, transmission shaft; 20, bevel gear ring; 21, linkage bevel gear; 22, rotating rod; 23, blade; 24, connecting shaft; 25, first inner cavity; 26, support; 27, second inner cavity; 28, ring groove; 29, sliding ring; 30, fourth rotating shaft; 31, embedding groove; 32, first closed cavity; 33, second closed cavity; 34, piston disc; 35, embedding rod; 36, return spring; 37, piston rod; 38, electric push rod; 39, compression ring. DETAILED DESCRIPTION

[0028] The specific embodiments of the present application will be further described with reference to the drawings. It should be noted that the description of these embodiments is intended for the purpose of aiding in an understanding of the present application and is not intended to be limiting of the present application. Moreover, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0029] Embodiment 1, please refer to Figures 1-7 and Figure 9 The present application provides a technical solution: a damper driver, comprising a valve body 1, both ends of the valve body 1 are fixedly connected with a fixed frame 2, the fixed frame 2 is fixedly connected with a connecting rod 3 between the fixed frame 2, and a fixed tool 4 is fixedly connected on the side wall of the fixed frame 2, a controller 5 is installed on the side wall of the fixed tool 4, an electric motor 6 is installed in the fixed tool 4, a worm 7 is fixedly connected on the output end of the electric motor 6, a worm gear 8 is meshingly connected on the outer surface of the worm 7, one end of a first rotating shaft 9 is fixedly connected on the central axis of the worm gear 8, a main bevel gear 10 is fixedly connected on the other end of the first rotating shaft 9, a secondary bevel gear 11 is meshingly connected on the outer surface of the main bevel gear 10, one end of a second rotating shaft 12 is fixedly connected on the central axis of the secondary bevel gear 11, a driving gear 13 is fixedly connected on the other end of the second rotating shaft 12, a driven gear 14 is meshingly connected on the outer surface of the driving gear 13, one end of a third rotating shaft 15 is fixedly connected on the central axis of the driven gear 14, a transmission bevel gear 16 is fixedly connected on the other end of the third rotating shaft 15, a planetary bevel gear 17 is meshingly connected on the outer surface of the transmission bevel gear 16, a driven bevel gear 18 is meshingly connected on the outer surface of the planetary bevel gear 17, one end of a transmission shaft 19 is fixedly connected on the central axis of the driven bevel gear 18, a bevel gear ring 20 is fixedly connected on the other end of the transmission shaft 19, a linkage bevel gear 21 is meshingly connected on the outer surface of the bevel gear ring 20, a rotating rod 22 is fixedly connected on the central axis of the linkage bevel gear 21, a blade 23 is fixedly connected on the top end of the rotating rod 22, and a connecting shaft 24 is fixedly connected on the outer edge of the blade 23.

[0030] Please refer to Figure 2 , Figure 4 , Figure 5 and Figure 9 , the connecting shaft 24 is rotatably connected with the valve body 1, a support 26 is fixedly connected on the fixed tool 4, the support 26 is rotatably sleeved with the first rotating shaft 9, the worm gear 8 has 120 teeth, the worm 7 has 1 head, the driving gear 13 has 20 teeth, the driven gear 14 has 120 teeth, the main bevel gear 10 and the secondary bevel gear 11 have the same number of teeth, and the transmission ratio of the bevel gear ring 20 and the linkage bevel gear 21 is 1:2.

[0031] Please refer to Figure 3 and Figure 5 , the second rotating shaft 12 is rotatably connected with the side wall of the fixed frame 2, the third rotating shaft 15 is rotatably sleeved with the side wall of the fixed frame 2, and the third rotating shaft 15 extends into a second inner cavity 27.

[0032] Specifically, in the process of opening the electric damper, the motor 6 on the fixed tooling 4 is started, so that the motor 6 drives the worm 7 to rotate, so that the worm wheel 8 connected with the worm 7 drives the first rotating shaft 9 to rotate, so that the main bevel gear 10 on the first rotating shaft 9 drives the secondary bevel gear 11 to rotate, so that the second rotating shaft 12 on the secondary bevel gear 11 drives the driving gear 13 to rotate, so that the driving gear 13 drives the driven gear 14 to rotate, and then the third rotating shaft 15 on the driven gear 14 drives the transmission bevel gear 16 to rotate. In the above process, because the worm wheel 8 is 120 teeth and the worm 7 is 1 tooth, the transmission ratio of the worm 7 and the worm wheel 8 is 120:1, that is, the worm 7 rotates 720° and the worm wheel 8 rotates 6°. The driving gear 13 is 20 teeth and the driven gear 14 is 120 teeth, so the transmission ratio of the driving gear 13 and the driven gear 14 is 6:1, that is, the driving gear 13 rotates 6° and the driven gear 14 rotates 1°. The transmission ratio of the main bevel gear 10 and the secondary bevel gear 11 is 1, which does not affect the rotation angle of the driven gear 14. In summary, when the motor 6 drives the worm 7 to rotate 360°, that is, one revolution, the driven gear 14 and the transmission bevel gear 16 rotate 0.5°. At this time, the planetary bevel gear 17 cannot rotate, so that the transmission bevel gear 16 can only drive the planetary bevel gear 17 to revolve, so that the driven bevel gear 18 meshing with the planetary bevel gear 17 rotates, so that the transmission shaft 19 on the driven bevel gear 18 drives the bevel gear 20 to rotate 0.5°. The transmission ratio of the bevel gear 20 and the linkage bevel gear 21 is 1:2, so that the linkage bevel gear 21 rotates 1°, so that the rotating rod 22 on the linkage bevel gear 21 drives the blade 23 to rotate 1°, achieving the purpose of opening the electric damper. The blade 23 rotates 1° for every revolution of the motor 6, so that the ordinary motor 6 achieves the effect of a stepping motor. At the same time, the stepping angle of the blade 23 is 1°, which expands the adjustment range of the blade 23, so that the adjustment of the blade 23 can adapt to the needs of various use environments, improves the ventilation volume adjustment precision of the damper, and thus improves the use effect.

[0033] Embodiment 2, please refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 7 , the present application provides a technical scheme: a damper driver, the first inner cavity 25 is formed in the link rod 3, the second inner cavity 27 is formed in the fixed frame 2, the transmission shaft 19 and the bevel gear 20 are rotatably connected with the first inner cavity 25, the linkage bevel gear 21 and the rotating rod 22 are rotatably connected with the link rod 3, the linkage bevel gear 21, the rotating rod 22 and the blade 23 are provided with a plurality of, and the plurality of linkage bevel gears 21, the plurality of rotating rods 22 and the plurality of blades 23 are uniformly distributed about the central axis of the transmission shaft 19.

[0034] Please refer to Figure 7The driving bevel gear 16, the planetary bevel gear 17 and the driven bevel gear 18 are sleeved in the second inner cavity 27, and the end of the transmission shaft 19 extends into the second inner cavity 27.

[0035] Specifically, during the process of the device being stationary, the blade 23 is adjusted, and under the influence of wind pressure or other factors, the blade 23 has a tendency to rotate or further open. According to the above principle, the worm wheel 8 has a tendency to rotate, and the worm wheel 8 and the worm 7 have self-locking properties, so the worm wheel 8 cannot drive the worm 7 to rotate, and therefore the blade 23 cannot rotate under the influence of wind pressure or other factors, achieving the purpose of automatically locking the blade 23 without the participation of other limiting mechanisms.

[0036] Embodiment 3, please refer to Figure 3 and Figures 6-8 The present application provides a technical solution: a damper driver, the inner surface of the second inner cavity 27 is provided with an annular groove 28, the annular groove 28 is sleeved with a sliding ring 29, the inner surface of the sliding ring 29 is rotatably connected with a fourth rotating shaft 30, the outer surface of the fourth rotating shaft 30 is fixedly connected with the planetary bevel gear 17, and the top surface of the fourth rotating shaft 30 is provided with an embedding groove 31, the sliding ring 29 is provided with a first closed cavity 32 and a second closed cavity 33 inside, the first closed cavity 32 is slidably sleeved with a piston disc 34, the bottom surface of the piston disc 34 is fixedly connected with an embedding rod 35, and the piston disc 34 and the bottom wall of the first closed cavity 32 are fixedly connected with a return spring 36, the second closed cavity 33 is slidably sleeved with a piston rod 37, the inner surface of the annular groove 28 is provided with an electric push rod 38, and the output end of the electric push rod 38 is fixedly connected with a pressing ring 39.

[0037] Please refer to Figure 8 The second closed cavity 33 is located outside the first closed cavity 32, and the second closed cavity 33 is in communication with the first closed cavity 32, the embedding rod 35 is connected with the bottom wall of the first closed cavity 32 in an embedded manner, and the embedding rod 35 is connected with the embedding groove 31 in a clamping manner, and the return spring 36 is sleeved outside the embedding rod 35.

[0038] Please refer to Figure 7 and Figure 8 The top end of the piston rod 37 is slidably connected with the top wall of the second closed cavity 33, and the top end of the piston rod 37 extends into the annular groove 28, the electric push rod 38 and the pressing ring 39 are both provided with two, and the two electric push rods 38 and the two pressing rings 39 are symmetrically arranged about the third rotating shaft 15, and the pressing ring 39 is slidably connected with the annular groove 28.

[0039] Specifically, in the process of closing the electrically operated air door, the electric push rod 38 is started by the controller 5, so that the electric push rod 38 is retracted and the compression ring 39 slides, so that the two compression rings 39 are separated, thereby releasing the restriction of the compression ring 39 on the piston rod 37. At this time, the high-pressure gas at the bottom end of the second sealed cavity 33 pushes the piston rod 37 to rise, and the air pressure at the top end of the first sealed cavity 32 decreases, thereby enabling the piston disc 34 to rise under the rebound of the return spring 36, so that the embedded rod 35 on the piston disc 34 is separated from the embedded groove 31, thereby releasing the fixation of the fourth rotating shaft 30 and the planetary bevel gear 17. According to the above process, at this time, the rotation of the transmission bevel gear 16 can drive the planetary bevel gear 17 to rotate, so that the other side of the planetary bevel gear 17 can drive the driven bevel gear 18 to rotate in the opposite direction, and the rotation direction of the driven bevel gear 18 is opposite to that of the above-mentioned driven bevel gear 18. Therefore, the blade 23 is indirectly rotated, achieving the purpose of closing the electrically operated air door. After closing, the electric push rod 38 is reset to achieve the purpose of locking the blade 23. At the same time, the above-mentioned process can be repeated, so that the ordinary electric motor 6 can drive the blade 23 to rotate forward and reverse, avoiding the disadvantages of the stepping motor, reducing the failure rate of the equipment, and without considering the influence of the environment and the system. The device life is improved, and the cost investment of the device is reduced.

[0040] The working principle and use process of the present application: when the electric air door is installed, the embedded rod 35 is clamped with the embedded groove 31, so that the fourth rotating shaft 30 is fixed with the slip ring 29, which indirectly limits the rotation of the planetary bevel gear 17. When the electric air door needs to be opened, the motor 6 on the fixed tool 4 is started, so that the motor 6 drives the worm 7 to rotate, so that the worm wheel 8 connected with the worm 7 drives the first rotating shaft 9 to rotate, so that the main bevel gear 10 on the first rotating shaft 9 drives the secondary bevel gear 11 to rotate, so that the second rotating shaft 12 on the secondary bevel gear 11 drives the driving gear 13 to rotate, so that the driven gear 14 drives the third rotating shaft 15 on the driven gear 14 to rotate, and the transmission bevel gear 16. In the above process, because the worm wheel 8 is 120 teeth, the worm 7 is 1, so that the transmission ratio of the worm 7 and the worm wheel 8 is 120:1, that is, the worm 7 rotates 720°, and the worm wheel 8 rotates 6°. The driving gear 13 is 20 teeth, and the driven gear 14 is 120 teeth, so the transmission ratio of the driving gear 13 and the driven gear 14 is 6:1, that is, the driving gear 13 rotates 6°, and the driven gear 14 rotates 1°. The transmission ratio of the main bevel gear 10 and the secondary bevel gear 11 is 1, which does not affect the rotation angle of the driven gear 14. As described above, when the motor 6 drives the worm 7 to rotate 360°, that is, one revolution, the driven gear 14 and the transmission bevel gear 16 rotate 0.5°. At this time, the planetary bevel gear 17 cannot rotate, so that the transmission bevel gear 16 can only drive the planetary bevel gear 17 to revolve, so that the driven bevel gear 18 meshing with the planetary bevel gear 17 rotates, so that the transmission shaft 19 on the driven bevel gear 18 drives the bevel gear 20 to rotate 0.5°. The transmission ratio of the bevel gear 20 and the linkage bevel gear 21 is 1:2, so that the linkage bevel gear 21 rotates 1°, so that the rotating rod 22 on the linkage bevel gear 21 drives the blade 23 to rotate 1°, so as to achieve the purpose of opening the electric air door. The blade 23 rotates 1° when the motor 6 rotates 1°, so that the ordinary motor 6 achieves the effect of stepping motor. At the same time, the stepping angle of the blade 23 is 1°, which expands the adjustment range of the blade 23, so that the adjustment of the blade 23 can adapt to the needs of various use environments, improves the ventilation volume regulation precision of the air door, and improves the use effect.

[0041] It should be further pointed out that after the blade 23 is adjusted, the blade 23 has the tendency to rotate or further open under the influence of wind pressure or other factors. According to the above principle, the worm wheel 8 has the tendency to rotate, and the worm wheel 8 and the worm 7 have self-locking property, so the worm wheel 8 cannot drive the worm 7 to rotate, and therefore the blade 23 cannot rotate under the influence of wind pressure or other factors, so as to achieve the purpose of automatically locking the blade 23 without the participation of other limiting mechanisms.

[0042] When the electrically operated air door needs to be closed, the electric push rod 38 is started by the controller 5, so that the electric push rod 38 is retracted and the compression ring 39 slides, so that the two compression rings 39 are separated, thereby releasing the restriction of the compression ring 39 on the piston rod 37, at this time the high-pressure gas at the bottom end of the second sealed cavity 33 pushes the piston rod 37 to rise, at the same time the gas pressure at the top end of the first sealed cavity 32 is reduced, thereby the piston disc 34 can rise under the rebound of the reset spring 36, so that the embedded rod 35 on the piston disc 34 is separated from the embedded groove 31, thereby releasing the fixation of the fourth rotating shaft 30 and the planetary bevel gear 17, according to the above process, at this time the rotation of the transmission bevel gear 16 can drive the planetary bevel gear 17 to rotate, so that the other side of the planetary bevel gear 17 can drive the driven bevel gear 18 to rotate in the opposite direction, the rotation direction of the driven bevel gear 18 is opposite to the above-mentioned rotation direction, therefore, the blade 23 is indirectly rotated, the purpose of closing the electrically operated air door is achieved, after closing, the electric push rod 38 is reset to achieve the purpose of locking the blade 23, at the same time the above-mentioned process can be repeated, so that the ordinary electric motor 6 can drive the blade 23 to rotate forward and reverse, avoiding the disadvantages of the stepping motor, reducing the failure rate of the equipment, without considering the influence of the environment and the system, improving the service life of the device, at the same time reducing the cost investment of the device, completing the operation.

[0043] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the present application, and still fall within the protection scope of the present application.

Claims

1. A damper drive, characterized in that The utility model provides a valve body (1), both ends of the valve body (1) are fixed with fixed frame (2), fixed frame (2) between fixed link rod (3) are fixed with, and fixed frame (2) side wall fixed with fixed tooling (4), the side wall of fixed tooling (4) is installed with controller (5), and fixed tooling (4) inside installation has motor (6), the output of motor (6) fixed with worm (7), the outer surface of worm (7) is engaged with worm gear (8), the middle axis of worm gear (8) one end fixed with first rotation axis (9), the other end of first rotation axis (9) fixed with main bevel gear (10), the outer surface of main bevel gear (10) is engaged with auxiliary bevel gear (11), the middle axis of auxiliary bevel gear (11) one end fixed with second rotation axis (12), the other end of second rotation axis (12) fixed with driving gear (13), the outer surface of driving gear (13) is engaged with driven gear (14), the middle axis of driven gear (14) one end fixed with third rotation axis (15), the other end of third rotation axis (15) fixed with transmission bevel gear (16), the outer surface of transmission bevel gear (16) is engaged with planetary bevel gear (17), the outer surface of planetary bevel gear (17) is engaged with driven bevel gear (18), the middle axis of driven bevel gear (18) one end fixed with transmission shaft (19), the other end of transmission shaft (19) fixed with bevel gear (20), the outer surface of bevel gear (20) is engaged with linkage bevel gear (21), the middle axis of linkage bevel gear (21) fixed with rotation rod (22), the top of rotation rod (22) fixed with blade (23), the outer edge of blade (23) fixed with link shaft (24).

2. A damper drive according to claim 1, wherein: The first inner cavity (25) is arranged in the link rod (3), the second inner cavity (27) is arranged in the fixed frame (2), the transmission shaft (19) and the bevel gear (20) are rotatably sleeved with the first inner cavity (25), the linkage bevel gear (21) and the rotation rod (22) are rotatably sleeved with the link rod (3), the linkage bevel gear (21), the rotation rod (22) and the blade (23) are provided in plurality, and the plurality of linkage bevel gears (21), the plurality of rotation rods (22) and the plurality of blades (23) are uniformly distributed about the middle axis of the transmission shaft (19).

3. A damper drive according to claim 1, wherein: The link shaft (24) is rotatably connected with the valve body (1), the fixed tooling (4) is fixed with the support (26), the support (26) is rotatably sleeved with the first rotation axis (9), the worm gear (8) is 120 teeth, the worm (7) is 1, the driving gear (13) is 20 teeth, the driven gear (14) is 120 teeth, the main bevel gear (10) and the auxiliary bevel gear (11) have the same number of teeth, the transmission ratio of the bevel gear (20) and the linkage bevel gear (21) is 1:

2.

4. A damper drive according to claim 1, wherein: The second rotating shaft (12) is rotatably connected with the side wall of the fixed frame (2), and the third rotating shaft (15) is rotatably sleeved with the side wall of the fixed frame (2) and extends into the second inner cavity (27).

5. A damper drive according to claim 1, wherein: The transmission bevel gear (16), the planet bevel gear (17) and the driven bevel gear (18) are all sleeved in the second inner cavity (27), and the end of the transmission shaft (19) extends into the second inner cavity (27).

6. A damper drive according to claim 2, wherein: The inner surface of the second inner cavity (27) is provided with an annular groove (28), the annular groove (28) is sleeved with a slip ring (29), the inner surface of the slip ring (29) is rotatably connected with a fourth rotating shaft (30), the outer surface of the fourth rotating shaft (30) is fixedly connected with the planet bevel gear (17), the top surface of the fourth rotating shaft (30) is provided with an embedding groove (31), the slip ring (29) is provided with a first closed cavity (32) and a second closed cavity (33) inside, the first closed cavity (32) is slidably sleeved with a piston disc (34), the bottom surface of the piston disc (34) is fixedly connected with an embedding rod (35), and the piston disc (34) and the bottom wall of the first closed cavity (32) are fixedly connected with a return spring (36), the second closed cavity (33) is slidably sleeved with a piston rod (37), the inner surface of the annular groove (28) is provided with an electric push rod (38), and the output end of the electric push rod (38) is fixedly connected with a pressing ring (39).

7. A damper drive according to claim 6, wherein: The second closed cavity (33) is located outside the first closed cavity (32), and the second closed cavity (33) is in communication with the first closed cavity (32), the embedding rod (35) is embeddedly connected with the bottom wall of the first closed cavity (32), and the embedding rod (35) is clamped with the embedding groove (31), and the return spring (36) is sleeved outside the embedding rod (35).

8. A damper drive according to claim 6, wherein: The top end of the piston rod (37) is slidably connected with the top wall of the second closed cavity (33), and the top end of the piston rod (37) extends into the annular groove (28), the electric push rod (38) and the pressing ring (39) are both provided with two, and the two electric push rods (38) and the two pressing rings (39) are symmetrically arranged about the third rotating shaft (15), and the pressing ring (39) is slidably connected with the annular groove (28).

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