A single-drive and double-drive gearbox for a fan capable of switching freely

Abstract

The invention discloses a single-drive and double-drive freely switchable gearbox for a fan, which relates to the technical field of gearboxes, and comprises a housing, a conversion shaft assembly, an output end main shaft assembly and a fan input shaft assembly, wherein the conversion shaft assembly comprises a conversion shaft, the output end main shaft assembly comprises an output end main shaft and an output end gear, the fan input shaft assembly comprises a fan input shaft and a belt disengagement gear, the belt disengagement gear comprises an outer gear ring, a ratchet and a plurality of wedges, the ratchet is fixedly mounted on the fan input shaft and a plurality of mounting grooves are arranged on the surface of the ratchet, the wedges are rotatably mounted in the mounting grooves and a torsion spring is arranged on the rotating shaft of the wedges; the outer gear ring is sleeved on the ratchet and is rotatably connected to the fan input shaft through a bearing, and a disengagement tooth matched with the wedge is arranged on the inner wall of the outer gear ring; the device drives the belt disengagement gear to realize its own clutch according to the size of the wind force, thereby realizing the free switching of the three modes of single-drive single-output, double-drive single-output and single-drive double-output of the gearbox.

Description

Technical Field

[0001] The present invention relates to the technical field of gearboxes, and in particular to a single-drive or dual-drive gearbox for a fan that can be switched freely. Background Art

[0002] At present, wind power devices such as wind power generation are unstable due to unstable wind power, which has a negative impact on the promotion of wind power machinery. Therefore, in order to make the output end of the wind power device run smoothly, it is urgent to develop a gearbox suitable for the fan to overcome the above problems. Summary of the invention

[0003] The purpose of the present invention is to address the defects of the prior art and provide a single-drive or dual-drive gearbox for a fan that can be switched freely.

[0004] The technical solution of the present invention is: a single-drive and dual-drive gearbox for a fan that can be switched freely, comprising a box body, a conversion shaft assembly, an output end main shaft assembly and a fan input shaft assembly, wherein a box cover is installed on the top of the box body, a conversion shaft assembly mounting hole, an output end main shaft assembly mounting hole and a fan input shaft assembly mounting hole are arranged in parallel on the side, and a base is provided at the bottom;

[0005] The conversion shaft assembly includes a conversion shaft, the output end main shaft assembly includes an output end main shaft and an output end gear, the fan input shaft assembly includes a fan input shaft and a belt disengager gear, the conversion shaft, the output end main shaft and the fan input shaft are respectively mounted in the conversion shaft assembly mounting hole, the output end main shaft assembly mounting hole and the fan input shaft assembly mounting hole through bearings; a conversion gear is provided on the conversion shaft, the output end gear is fixedly mounted on the output end main shaft and meshed with the conversion gear, a transmission gear is provided on the output end main shaft, and the belt disengager gear is fixedly mounted on the fan input shaft and meshed with the transmission gear;

[0006] The gear with a disengager includes an outer gear ring, a ratchet and a plurality of wedge blocks, wherein the ratchet is fixedly mounted on the fan input shaft and a plurality of mounting grooves are provided on the surface of the ratchet, the wedge blocks are rotatably mounted in the mounting grooves and a torsion spring is provided on the wedge block rotating shaft; the outer gear ring is sleeved on the ratchet and is rotatably connected to the fan input shaft through a bearing, and a disengagement tooth matching the wedge blocks is provided on the inner wall of the outer gear ring.

[0007] Preferably, connecting plates are fixedly connected to both sides of the outer gear ring, and the inner edges of the two connecting plates are rotatably connected to the fan input shaft through bearings.

[0008] Preferably, the bearings between the conversion shaft, the output end main shaft and the fan input shaft and the conversion shaft assembly mounting hole, the output end main shaft assembly mounting hole and the fan input shaft assembly mounting hole are all tapered roller bearings.

[0009] Preferably, the fan input shaft is a hollow shaft.

[0010] Preferably, the fan input shaft passes through the box body, and the fan can be connected to both ends.

[0011] Preferably, the input end of the fan input shaft is provided with a expansion sleeve for connecting to the fan main shaft.

[0012] Preferably, the output end of the output end main shaft is arranged in the same direction as the input end of the fan input shaft, and the two are arranged in opposite directions to the connection end of the conversion shaft.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The device drives the belt disengagement gear to realize its own clutch through the size of wind force, thereby realizing the free switching of the three modes of single-drive single-output, dual-drive single-output and single-drive dual-output of the gearbox; the device effectively solves the problem of unstable power energy caused by unstable wind force through the joint action of the belt disengagement gear and the frequency conversion control motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the belt disengager gear;

[0017] Figure 3 It is a cross-sectional schematic diagram of a gear with a disengager.

[0018] In the figure: 1, box body, 2, box cover, 101, conversion shaft assembly mounting hole, 102, output end main shaft assembly mounting hole, 103, fan input shaft assembly mounting hole, 104, base, 3, conversion shaft, 301, conversion gear, 4, output end main shaft, 401, transmission gear, 5, output end gear, 6, fan input shaft, 7, gear with disengager, 8, outer gear ring, 801, disengagement tooth, 9, ratchet, 901, mounting groove, 10, wedge block, 11, connecting plate, 12, expansion sleeve. DETAILED DESCRIPTION

[0019] The present invention is further described below with reference to the accompanying drawings and embodiments.

[0020] Embodiment 1

[0021] Reference Figure 1-2As shown, a single-drive and dual-drive gearbox for a fan that can be switched freely includes a box body 1, a conversion shaft assembly, an output end main shaft assembly and a fan input shaft assembly. A box cover 2 is installed on the top of the box body 1, and a conversion shaft assembly mounting hole 101, an output end main shaft assembly mounting hole 102 and a fan input shaft assembly mounting hole 103 are sequentially arranged side by side on the side, and a base 104 is provided at the bottom;

[0022] The conversion shaft assembly includes a conversion shaft 3, the output end main shaft assembly includes an output end main shaft 4 and an output end gear 5, the fan input shaft assembly includes a fan input shaft 6 and a belt disengager gear 7, the conversion shaft 3, the output end main shaft 4 and the fan input shaft 6 are respectively mounted in the conversion shaft assembly mounting hole 101, the output end main shaft assembly mounting hole 102 and the fan input shaft assembly mounting hole 103 through bearings; the conversion shaft 3 is provided with a conversion gear 301, the output end gear 5 is fixedly mounted on the output end main shaft 4 and meshed with the conversion gear 301, the output end main shaft 4 is provided with a transmission gear 401, and the belt disengager gear 7 is fixedly mounted on the fan input shaft 6 and meshed with the transmission gear 401;

[0023] The gear 7 with a disengager includes an outer gear ring 8, a ratchet 9 and a plurality of wedges 10. The ratchet 9 is fixedly mounted on the fan input shaft 6 and a plurality of mounting grooves 901 are provided on the surface of the ratchet 9. The wedges 10 are rotatably mounted in the mounting grooves 901 and a torsion spring is provided on the rotating shaft of the wedges 10. The outer gear ring 8 is mounted on the ratchet 9 and is rotatably connected to the fan input shaft 6 through a bearing, and a disengagement tooth 801 adapted to the wedges 10 is provided on the inner wall of the outer gear ring 8.

[0024] When the present invention is used, the fan main shaft is firstly connected with the fan input shaft 6, and the motor is connected with the conversion shaft 3; when the wind is small, the motor drives the conversion shaft 3 to rotate, thereby driving the output end gear 5 to rotate, and then driving the output end main shaft 4 to rotate, and then driving the belt disengagement gear 7 to rotate, but at this time, the ratchet 9 in the belt disengagement gear 7 is in a disengaged state with the outer gear ring 8, and the fan input shaft 6 and the ratchet 9 do not rotate or rotate at a speed lower than the outer gear ring 8, thereby reducing the power consumption of the motor; when the wind reaches a certain intensity, the ratchet 9 in the belt disengagement gear 7 is in an associated state with the outer gear ring 8, the belt disengagement gear 7 rotates as a whole, and drives the output end main shaft 4 to rotate together with the motor; when the fan and the motor jointly drive the output end main shaft 4 to rotate, as the wind increases or decreases, the motor load is increased or decreased by the motor frequency conversion control to ensure that the output end main shaft 4 rotates smoothly. As the wind increases, when the power generated by the rotation of the fan input shaft 6 continues to increase to a certain value, the motor load drops to zero, the wind continues to increase, and the conversion shaft 3 rotates from power input to power output.

[0025] The working principle of the belt disengager gear 7 is as follows: when the rotation speed of the outer ring gear 8 is faster than that of the ratchet 9, the wedge 10 does not generate thrust on the outer ring gear 8, and the corresponding outer ring gear 8 has no driving effect on the output end main shaft 4; when the rotation speed of the outer ring gear 8 is slower than that of the ratchet 9, the wedge 10 generates thrust on the outer ring gear 8, that is, the ratchet 9 on the fan input shaft 6 pushes the outer ring gear 8 to rotate through the wedge 10, thereby driving the output end main shaft 4 to rotate.

[0026] The device drives the belt disengagement gear 7 to realize its own clutch according to the size of the wind force, thereby realizing the free switching of the three modes of single-drive single-output, double-drive single-output and single-drive double-output of the gearbox; the device effectively solves the problem of unstable power energy caused by unstable wind force through the joint action of the belt disengagement gear 7 and the frequency conversion control motor.

[0027] Embodiment 2

[0028] As a preferred embodiment of the present invention, this embodiment optimizes the structure of the belt disengager gear 7 on the basis of the first embodiment, specifically: connecting plates 11 are fixedly connected on both sides of the outer gear ring 8 of the belt disengager gear 7, and the two are fixedly connected by fastening bolts; the inner edges of the two connecting plates 11 are rotatably connected to the fan input shaft 6 through bearings.

[0029] This optimized arrangement is beneficial to the assembly of the belt disengager gear 7, and effectively improves the practicality of the device and the simplicity of the device maintenance.

[0030] Embodiment 3

[0031] As a preferred embodiment of the present invention, this embodiment optimizes the mounting bearings of the conversion shaft 3, the output end main shaft 4 and the fan input shaft 6 on the basis of the second embodiment. Specifically, the bearings between the conversion shaft 3, the output end main shaft 4 and the fan input shaft 6 and the conversion shaft assembly mounting hole 101, the output end main shaft assembly mounting hole 102 and the fan input shaft assembly mounting hole 103 are all tapered roller bearings.

[0032] The conversion shaft 3, the output end main shaft 4 and the fan input shaft 6 in the device will all generate axial forces when in use, and the tapered roller bearings can not only withstand radial loads but also axial loads, so the tapered roller bearings are more suitable for the device.

[0033] Embodiment 4

[0034] As a preferred embodiment of the present invention, this embodiment optimizes the structure of the fan input shaft 6 on the basis of the first embodiment. Specifically, the fan input shaft 6 in this embodiment is a hollow shaft, which passes through the box body 1 and can be connected to the fan at both ends. The input end of the fan input shaft 6 is provided with a locking sleeve 12 for connecting to the main shaft of the fan.

[0035] The optimized fan input shaft 6 is more compatible with the fan main shaft, which can ensure that the fan input shaft 6 is completely consistent with the fan main shaft to form a unified body, thereby improving the stability of power input and effectively improving the assembly speed of the device, thereby improving the working efficiency of the device; both ends of the fan input shaft 6 in this embodiment can be connected to the fan, and this setting improves the versatility of the gearbox.

[0036] Embodiment 5

[0037] As a preferred embodiment of the present invention, this embodiment optimizes the connection end orientations of the conversion shaft 3, the output end main shaft 4 and the fan input shaft 6 on the basis of the first embodiment. Specifically, the output end of the output end main shaft 4 is arranged in the same direction as the input end of the fan input shaft 6, and both are arranged in opposite directions to the connection end of the conversion shaft 3. This arrangement optimizes the balance of the device and makes the operation of the device more stable.

[0038] The present invention is not limited to the above-mentioned embodiments. Various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention. The changed contents still fall within the protection scope of the present invention.

Claims

1. A single-drive or dual-drive gearbox for a fan that can be switched freely, characterized in that: It includes a box body, a conversion shaft assembly, an output end main shaft assembly and a fan input shaft assembly. The box body is provided with a box cover on the top, and the side is provided with a conversion shaft assembly mounting hole, an output end main shaft assembly mounting hole and a fan input shaft assembly mounting hole in sequence, and a base is provided at the bottom; The conversion shaft assembly includes a conversion shaft, the output end main shaft assembly includes an output end main shaft and an output end gear, the fan input shaft assembly includes a fan input shaft and a belt disengager gear, the conversion shaft, the output end main shaft and the fan input shaft are respectively mounted in the conversion shaft assembly mounting hole, the output end main shaft assembly mounting hole and the fan input shaft assembly mounting hole through bearings; a conversion gear is provided on the conversion shaft, the output end gear is fixedly mounted on the output end main shaft and meshed with the conversion gear, a transmission gear is provided on the output end main shaft, and the belt disengager gear is fixedly mounted on the fan input shaft and meshed with the transmission gear; The gear with a disengager includes an outer gear ring, a ratchet and a plurality of wedge blocks, wherein the ratchet is fixedly mounted on the fan input shaft and a plurality of mounting grooves are provided on the surface of the ratchet, the wedge blocks are rotatably mounted in the mounting grooves and a torsion spring is provided on the wedge block rotating shaft; the outer gear ring is sleeved on the ratchet and is rotatably connected to the fan input shaft through a bearing, and a disengagement tooth matching the wedge blocks is provided on the inner wall of the outer gear ring.

2. A single-drive or dual-drive freely switchable gearbox for a fan according to claim 1, characterized in that: Connecting plates are fixedly connected to both sides of the outer gear ring, and the inner edges of the two connecting plates are rotatably connected to the fan input shaft through bearings.

3. A single-drive or dual-drive freely switchable gearbox for a fan according to claim 1, characterized in that: The bearings between the conversion shaft, the output end main shaft and the fan input shaft and the conversion shaft assembly mounting hole, the output end main shaft assembly mounting hole and the fan input shaft assembly mounting hole are all tapered roller bearings.

4. A single-drive or dual-drive freely switchable gearbox for a fan according to claim 1, characterized in that: The fan input shaft is a hollow shaft.

5. A single-drive or dual-drive freely switchable gearbox for a fan according to claim 1 or 4, characterized in that: The fan input shaft passes through the box body, and the fans can be connected at both ends.

6. A single-drive or dual-drive freely switchable gearbox for a fan according to claim 5, characterized in that: The input end of the fan input shaft is provided with a expansion sleeve for connecting to the fan main shaft.

7. A single-drive or dual-drive freely switchable gearbox for a fan according to claim 1, characterized in that: The output end of the output end main shaft is arranged in the same direction as the input end of the fan input shaft, and the two are arranged in opposite directions to the connection end of the conversion shaft.

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