A helical gear reducer

Abstract

The present invention proposes a helical gear reducer, comprising a gearbox, one side of which is fixedly connected to a motor, an output shaft of the motor passes through one end of the gearbox and is fixedly connected to a first helical gear, an inner wall of the gearbox is rotatably connected to a rotating rod and a reduction shaft, one end of the reduction shaft passes through the gearbox and extends to the outside of the gearbox, and the outer surfaces of the reduction shaft and the rotating rod are both fixedly sleeved with a second helical gear. The present invention proposes a helical gear reducer, by providing a second helical gear, a fan blade, a mounting seat, and a clamping seat, when in use, the second helical gear can accelerate the flow of surrounding air through the fan blades during operation, thereby enabling the reducer to have a better heat dissipation effect, and the clamping seat can clamp and fix the second helical gear on the mounting seat, thereby enabling the device to have better stability and prevent the phenomenon of slipping teeth.

Description

Technical Field

[0001] The present invention relates to the technical field of reducers, and in particular to a helical gear reducer. Background Art

[0002] The reducer is an independent component consisting of a gear drive, worm drive, or gear-worm drive enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine. It plays the role of matching speed and transmitting torque between the prime mover and the working machine or actuator, and is widely used in modern machinery.

[0003] The present invention relates to a helical gear reducer. The existing reducer has certain disadvantages. The reducer needs to be combined and connected through gears to achieve the deceleration effect. When the gears rotate at high speed, a large amount of heat will be generated. The existing reducer does not have a good heat dissipation effect and cannot work for a long time, which will shorten the service life of the reducer. Secondly, the existing device does not have better stability. When the internal gears rotate at high speed, the gears will slip, thereby affecting the deceleration effect. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a helical gear reducer.

[0005] A helical gear reducer proposed in the present invention includes a gear box, one side of the gear box is fixedly connected to a motor, the output shaft of the motor passes through one end of the gear box and is fixedly connected to a first helical gear, the inner wall of the gear box is rotatably connected to a rotating rod and a reduction shaft, one end of the reduction shaft passes through the gear box and extends to the outside of the gear box, the outer surfaces of the reduction shaft and the rotating rod are fixedly sleeved with a second helical gear, the second helical gear arranged on the outer surface of the rotating rod is meshed with the first helical gear, and the outer surface of one end of the rotating rod is fixedly sleeved with a third helical gear, which is meshed with the second helical gear arranged on the outer surface of the reduction shaft.

[0006] Preferably, the second bevel gear includes an inner ring, and a plurality of annularly distributed connecting plates are commonly fixedly connected between the inner ring and the second bevel gear. The second bevel gear and the inner ring are divided into a plurality of ventilation ports by the plurality of connecting plates. A first axial hole is provided on the inner wall of the inner ring, and four mutually symmetrical positioning grooves are provided on the inner wall of the first axial hole. A plurality of annularly distributed fan blades are fixedly connected on the upper and lower sides of the second bevel gear, and a fixing ring is commonly fixedly connected to the tops of the plurality of fan blades.

[0007] Preferably, a mounting seat is sleeved on the outer surface of the reduction shaft, a mounting block is fixedly connected to the top center position of the mounting seat, a second axial hole connected to the rotating rod is opened at the top center position of the mounting block, and four symmetrical positioning blocks are fixedly connected to the outer surface of the mounting block and embedded in the positioning groove.

[0008] Preferably, one end of the outer surface of the rotating rod and the reduction shaft is provided with a clamping seat located on one side of the second bevel gear, and one end of the outer surface of the rotating rod and the reduction shaft is threadedly connected with a fastening nut located directly above the clamping seat.

[0009] Preferably, the gear box and both ends of the rotating rod are provided with a first bearing, and the two ends of the rotating rod are rotatably connected to the gear box through the first bearing, one end of the reduction shaft is rotatably connected to the second bearing and fixedly connected to the inner wall of the gear box, and one end of the reduction shaft passes through the gear box and is rotatably connected to a rotating shaft and fixedly connected to the gear box.

[0010] Preferably, two mutually parallel and symmetrical support seats are fixedly connected to the bottom of the gear box, mounting holes are provided on the outer surfaces of the support seats, and mounting nuts are fixedly connected between the motor and the gear box.

[0011] Preferably, a sink is provided on the top of the gear box, a plurality of heat dissipation openings parallel to each other are provided on the inner wall of the sink, and a dustproof net is provided inside the sink on the top of the plurality of heat dissipation openings.

[0012] Preferably, the surfaces of the fixing ring, the inner ring and the connecting plate are all coated with a graphene heat dissipation layer.

[0013] Preferably, the thermal conductivity of the graphene heat dissipation layer is 2000-2500 W / m·K.

[0014] Compared with the prior art, the helical gear reducer proposed in the present invention has at least the following beneficial effects:

[0015] 1) By means of the motor, the first bevel gear, the rotating rod, the second bevel gear, the gear box, the reduction shaft and the third bevel gear, the motor can drive the first bevel gear to rotate, the first bevel gear is meshed with the second bevel gear on the rotating rod to drive the rotating rod to rotate inside the gear box, the rotating rod can drive the third bevel gear to rotate, the third bevel gear is meshed with the second bevel gear on the reduction shaft to drive the reduction shaft to rotate, thereby performing secondary deceleration on the motor;

[0016] 2) Through the second bevel gear, ventilation port, fan blade, heat dissipation port and sink, the plurality of ventilation ports can discharge the heat generated by the high-speed rotation of the second bevel gear through the ventilation port. At the same time, the plurality of fan blades can accelerate the flow of gas therein, so as to facilitate rapid heat dissipation around the second bevel gear. At the same time, the heat dissipation port can facilitate the heat dissipation inside the gear box. The dustproof net arranged inside the sink can prevent the dust outside the gear box from entering the gear box, so as to achieve better dustproof and heat dissipation effect.

[0017] 3) By setting the first shaft hole, mounting block, positioning block, positioning groove, fastening nut, rotating rod and reduction shaft, the first shaft hole can embed the second bevel gear on the mounting block, the positioning block and the positioning groove inside the first shaft hole are embedded and connected with each other so that the second bevel gear can be quickly embedded and installed, the clamping seat can press the second bevel gear on the mounting seat, and the fastening nut can be threadedly connected with the rotating rod and the reduction shaft so that the two second bevel gears can be fixedly installed on the rotating rod and the reduction shaft respectively, and at the same time can make it have better stability to prevent slipping during high-speed rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a helical gear reducer proposed by the present invention;

[0019] Figure 2 A schematic diagram of the internal structure of a gear box in a helical gear reducer proposed by the present invention;

[0020] Figure 3 This is a schematic structural diagram of a second helical gear in a helical gear reducer proposed by the present invention;

[0021] Figure 4 This is a schematic structural diagram of a mounting seat in a helical gear reducer proposed by the present invention.

[0022] Legend:

[0023] 1. Gearbox; 101. Sink; 102. Heat dissipation port; 103. Support seat; 2. Motor; 201. Mounting nut; 3. First bevel gear; 4. Rotating rod; 401. First bearing; 5. Second bevel gear; 501. Fixing ring; 502. Connecting plate; 503. Inner ring; 504. First axial hole; 505. Positioning groove; 506. Ventilation port; 507. Fan blade; 6. Mounting seat; 601. Mounting block; 602. Second axial hole; 603. Positioning block; 7. Reduction shaft; 701. Second bearing; 702. Rotating shaft; 8. Third bevel gear; 9. Pressing seat; 10. Fastening nut. DETAILED DESCRIPTION

[0024] Reference Figure 1-4The present invention proposes a helical gear reducer, including a gear box 1, one side of the gear box 1 is fixedly connected to a motor 2, an output shaft of the motor 2 passes through one end of the gear box 1 and is fixedly connected to a first helical gear 3, an inner wall of the gear box 1 is rotatably connected to a rotating rod 4 and a reduction shaft 7, one end of the reduction shaft 7 passes through the gear box 1 and extends to the outside of the gear box 1, the outer surfaces of the reduction shaft 7 and the rotating rod 4 are fixedly sleeved with a second helical gear 5, the second helical gear 5 arranged on the outer surface of the rotating rod 4 is meshed with the first helical gear 3, and the outer surface of one end of the rotating rod 4 is fixedly sleeved with a third helical gear 8, which is meshed with the second helical gear 5 arranged on the outer surface of the reduction shaft 7.

[0025] In a specific embodiment, the second bevel gear 5 includes an inner ring 503, and a plurality of annularly distributed connecting plates 502 are fixedly connected between the inner ring 503 and the second bevel gear 5. The second bevel gear 5 and the inner ring 503 are divided into a plurality of ventilation ports 506 by the plurality of connecting plates 502. A first axial hole 504 is provided on the inner wall of the inner ring 503, and four mutually symmetrical positioning grooves 505 are provided on the inner wall of the first axial hole 504. A plurality of annularly distributed fan blades 507 are fixedly connected on both upper and lower sides of the second bevel gear 5, and a fixing ring 501 is fixedly connected to the tops of the plurality of fan blades 507.

[0026] By adopting the above technical solution, the plurality of ventilation ports 506 can discharge the heat generated by the high-speed rotation of the second bevel gear 5 through the ventilation ports 506 . Meanwhile, the plurality of fan blades 507 can accelerate the flow of gas therein, thereby facilitating rapid heat dissipation around the second bevel gear 5 .

[0027] In a specific embodiment, the surfaces of the fixing ring 501, the inner ring 503 and the connecting plate 502 are coated with a graphene heat dissipation layer. Preferably, the thermal conductivity of the graphene heat dissipation layer is 2000-2500 W / m·K. Since graphene has excellent transverse and longitudinal heat conduction and heat dissipation performance, the heat generated by the second helical gear 5 when rotating at high speed can be quickly conducted away by providing the graphene heat dissipation material.

[0028] In a specific embodiment, the outer surface of the reduction shaft 7 is sleeved with a mounting seat 6, a mounting block 601 is fixedly connected to the top center of the mounting seat 6, a second shaft hole 602 connected to the rotating rod 4 is opened at the top center of the mounting block 601, and four mutually symmetrical positioning blocks 603 are fixedly connected to the outer surface of the mounting block 601 and embedded in the positioning groove 505;

[0029] By adopting the above technical solution, the first axial hole 504 can embed the second bevel gear 5 on the mounting block 601, and the positioning block 603 and the positioning groove 505 inside the first axial hole 504 are embedded and connected with each other, so that the second bevel gear 5 can be quickly embedded and installed, and at the same time, it can have better stability to prevent slipping during high-speed rotation.

[0030] In a specific embodiment, a clamping seat 9 is sleeved on one end of the outer surface of the rotating rod 4 and the reduction shaft 7 and is located on one side of the second bevel gear 5. A fastening nut 10 is threadedly connected to one end of the outer surface of the rotating rod 4 and the reduction shaft 7 and is located directly above the clamping seat 9.

[0031] By adopting the above technical solution, the clamping seat 9 can press the second bevel gear 5 onto the mounting seat 6, and the fastening nut 10 is threadedly connected with the rotating rod 4 and the reduction shaft 7, so that the two second bevel gears 5 can be fixedly installed on the rotating rod 4 and the reduction shaft 7 respectively, which is convenient for disassembly and assembly.

[0032] In a specific embodiment, the gear box 1 and both ends of the rotating rod 4 are provided with a first bearing 401, and both ends of the rotating rod 4 are rotatably connected to the gear box 1 through the first bearing 401, one end of the reduction shaft 7 is rotatably connected to the second bearing 701 and fixedly connected to the inner wall of the gear box 1, and one end of the reduction shaft 7 passes through the gear box 1 and is rotatably connected to the rotating shaft 702 and fixedly connected to the gear box 1;

[0033] By adopting the above technical solution, the two first bearings 401 can enable the rotating rod 4 to rotate at a fixed position inside the gearbox 1, and the second bearing 701 and the rotating shaft 702 can enable the reduction shaft 7 to rotate at a fixed position inside the gearbox 1, and at the same time, one end of the reduction shaft 7 can extend to the external transmission of the gearbox 1.

[0034] In a specific embodiment, two mutually parallel and symmetrical support seats 103 are fixedly connected to the bottom of the gear box 1, and mounting holes are provided on the outer surface of the support seats 103. A mounting nut 201 is fixedly connected between the motor 2 and the gear box 1.

[0035] By adopting the above technical solution, the support seat 103 can fix and disassemble the device through the mounting hole, and at the same time can make the device have better stability. The motor 2 can be disassembled and assembled between the mounting nut 201 and the gear box 1, so as to facilitate better motor 2.

[0036] In a specific embodiment, a sink 101 is provided at the top of the gear box 1, and a plurality of heat dissipation openings 102 parallel to each other are provided on the inner wall of the sink 101. A dustproof net is provided inside the sink 101 and is located at the top of the plurality of heat dissipation openings 102.

[0037] By adopting the above technical solution, the heat dissipation port 102 can facilitate the heat inside the gear box 1 to dissipate, and the dustproof net arranged inside the sink 101 can prevent dust outside the gear box 1 from entering the inside of the gear box 1.

[0038] Working principle of the present invention: when in use, first, the motor 2 can drive the first bevel gear 3 to rotate, the first bevel gear 3 is meshed and connected with the second bevel gear 5 on the rotating rod 4, which can drive the rotating rod 4 to rotate inside the gear box 1, the rotating rod 4 can drive the third bevel gear 8 to rotate, the third bevel gear 8 is meshed and connected with the second bevel gear 5 on the reduction shaft 7, which can drive the reduction shaft 7 to rotate, so that the motor 2 can be decelerated twice;

[0039] The plurality of ventilation ports 506 can discharge the heat generated when the second bevel gear 5 rotates at high speed through the ventilation ports 506. At the same time, the plurality of fan blades 507 can accelerate the flow of gas therein, so as to facilitate rapid heat dissipation around the second bevel gear 5. At the same time, the heat dissipation port 102 can facilitate the heat dissipation inside the gear box 1. The dustproof net provided inside the sink 101 can prevent dust outside the gear box 1 from entering the gear box 1, so as to achieve better dustproof and heat dissipation effects.

[0040] The first axial hole 504 can embed the second bevel gear 5 on the mounting block 601, and the positioning block 603 and the positioning groove 505 inside the first axial hole 504 are embedded and connected with each other, so that the second bevel gear 5 can be quickly embedded and installed, and the clamping seat 9 can press the second bevel gear 5 on the mounting seat 6. The fastening nut 10 is threadedly connected with the rotating rod 4 and the reduction shaft 7, so that the two second bevel gears 5 can be fixedly installed on the rotating rod 4 and the reduction shaft 7 respectively, and at the same time, it can make it have better stability and prevent sliding of the sliding teeth during high-speed rotation.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A helical gear reducer, characterized in that: The invention comprises a gear box (1), one side of which is fixedly connected to a motor (2), an output shaft of the motor (2) passes through one end of the gear box (1) and is fixedly connected to a first bevel gear (3), an inner wall of the gear box (1) is rotatably connected to a rotating rod (4) and a reduction shaft (7), one end of the reduction shaft (7) passes through the gear box (1) and extends to the outside of the gear box (1), the outer surfaces of the reduction shaft (7) and the rotating rod (4) are both fixedly sleeved with a second bevel gear (5), the second bevel gear (5) arranged on the outer surface of the rotating rod (4) is meshed with the first bevel gear (3), and the outer surface of one end of the rotating rod (4) is fixedly sleeved with a third bevel gear (8) and is meshed with the second bevel gear (5) arranged on the outer surface of the reduction shaft (7); The outer surface of the reduction shaft (7) is sleeved with a mounting seat (6), a mounting block (601) is fixedly connected to the top center position of the mounting seat (6), a second axial hole (602) which is connected to the rotating rod (4) is opened at the top center position of the mounting block (601), and four symmetrical positioning blocks (603) are fixedly connected to the outer surface of the mounting block (601) and embedded in the positioning groove (505), and a first axial hole, a mounting block, a positioning block, a positioning groove, a fastening nut, a rotating rod and a reduction shaft are provided, the first axial hole can embed the second bevel gear on the mounting block, and the positioning block and the positioning groove inside the first axial hole are embedded in each other. The second bevel gear (5) comprises an inner ring (503), a plurality of annularly distributed connecting plates (502) are fixedly connected between the inner ring (503) and the second bevel gear (5), a plurality of annularly distributed fan blades (507) are fixedly connected to the upper and lower sides of the second bevel gear (5), and a fixing ring (501) is fixedly connected to the tops of the plurality of fan blades (507).

2. A helical gear reducer according to claim 1, characterized in that: The second bevel gear (5) and the inner ring (503) are divided into a plurality of ventilation ports (506) by a plurality of connecting plates (502); a first axial hole (504) is provided on the inner wall of the inner ring (503); and four mutually symmetrical positioning grooves (505) are provided on the inner wall of the first axial hole (504).

3. A helical gear reducer according to claim 1, characterized in that: One end of the outer surface of the rotating rod (4) and the reduction shaft (7) is sleeved with a clamping seat (9) located on one side of the second bevel gear (5), and one end of the outer surface of the rotating rod (4) and the reduction shaft (7) is threadedly connected with a fastening nut (10) located directly above the clamping seat (9).

4. A helical gear reducer according to claim 1, characterized in that: The gear box (1) and the two ends of the rotating rod (4) are both provided with a first bearing (401); the two ends of the rotating rod (4) are rotatably connected to the gear box (1) via the first bearing (401); one end of the reduction shaft (7) is rotatably connected to a second bearing (701) and is fixedly connected to the inner wall of the gear box (1); one end of the reduction shaft (7) passes through the gear box (1) and is rotatably connected to a rotating shaft (702) and is fixedly connected to the gear box (1).

5. The helical gear reducer according to claim 1, characterized in that: The bottom of the gear box (1) is fixedly connected to two mutually parallel and symmetrical support seats (103), the outer surface of the support seats (103) is provided with mounting holes, and the motor (2) and the gear box (1) are fixedly connected together with a mounting nut (201).

6. A helical gear reducer according to claim 1, characterized in that: The top of the gear box (1) is provided with a sinking groove (101), the inner wall of the sinking groove (101) is provided with a plurality of mutually parallel heat dissipation openings (102), and a dustproof net is arranged inside the sinking groove (101) and is located on the top of the plurality of heat dissipation openings (102).

7. The helical gear reducer according to claim 1, characterized in that: The surfaces of the fixing ring (501), the inner ring (503) and the connecting plate (502) are all coated with a graphene heat dissipation layer.

8. A helical gear reducer according to claim 7, characterized in that: The thermal conductivity of the graphene heat dissipation layer is 2000-2500 W / m·K.

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