A high-power high-torque conical double-screw speed reducer

Abstract

This invention discloses a high-power, high-torque conical twin-screw reducer, comprising a reducer housing body and a drive shaft and a driven shaft perpendicularly inserted into the side wall of the reducer housing body. The drive shaft and the driven shaft are driven by meshing drive bevel gears, which transmit rotational speed and torque. The driven shaft includes a first shaft and a second shaft, with the driven bevel gear coaxially fixed to the second shaft. A lifting slider that slides up and down on the outer side wall of the driven shaft is provided below the driven bevel gear. This invention utilizes a mechanism where the sealing condition is broken when the telescopic oil guide rod passes through the valve and inserts into the oil outlet and inlet pipes. Under the condition of driven shaft rotation, the oil injection hole forms a complete oil passage through the oil outlet, connecting hole, and inlet pipe, thereby achieving lubrication of the telescopic gears and the meshing drive and driven bevel gears.

Description

Technical Field

[0001] This invention relates to the field of speed reducer technology, and in particular to a high-power, high-torque conical twin-screw speed reducer. Background Technology

[0002] Currently, some speed reducers use meshing bevel gears to transmit speed and torque. However, the following problems often exist in the use of bevel screw reducers: First, the speed needs to be manually adjusted during deceleration, but manual adjustment often has a lag, meaning that when immediate deceleration is needed, the operator has not yet made timely adjustments; second, the sensitivity is not high, meaning that the speed on the output shaft cannot be fed back in time during the transmission process.

[0003] To address this, we designed a high-power, high-torque conical twin-screw reducer. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of low sensitivity of existing speed reducers, that is, the inability to provide timely feedback of the rotational speed on the output shaft during transmission, and to propose a high-power, high-torque conical twin-screw speed reducer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-power, high-torque conical twin-screw reducer includes a reducer housing body and a drive shaft and a driven shaft that are perpendicularly inserted into the side wall of the reducer housing body. The drive shaft and the driven shaft are driven and transmitted through meshing drive bevel gears and driven bevel gears. The driven shaft includes a first shaft and a second shaft, and the driven bevel gear is coaxially fixed with the second shaft. A lifting slider is provided below the driven bevel gear and slides up and down on the outer side wall of the driven shaft. The lifting slider is used to adjust the number of meshing teeth between the driven bevel gear and the drive bevel gear.

[0007] Preferably, the driven bevel gear includes a telescopic bevel gear body and a plurality of tooth telescopic mechanisms arranged circumferentially on the telescopic bevel gear body. The tooth telescopic mechanism includes a telescopic groove, telescopic teeth, and a swing cavity. The fixed teeth on the telescopic bevel gear body and the tooth telescopic mechanism are arranged alternately. The telescopic groove and the fixed teeth on the telescopic bevel gear body are arranged alternately and equidistantly on the side wall of the telescopic bevel gear body. The telescopic teeth slide on the telescopic bevel gear body through the telescopic groove. The swing cavity is partially connected to the telescopic groove.

[0008] Preferably, the lifting slider and the telescopic tooth are connected by a rotating rod mechanism. The rotating rod mechanism includes a second shaft platform disposed on the side wall of the lifting slider, a first shaft platform fixedly mounted on the telescopic tooth, and the same connecting rod rotatably connected to the first shaft platform and the second shaft platform. The swing cavity provides movement space for the swing of the connecting rod, and a ring magnet is provided on the top of the lifting slider.

[0009] Preferably, a centrifugal rotating box is provided above the lifting slider. The centrifugal rotating box is arranged in a ring shape and is fixed to the outer wall of the first shaft. The inner cavity of the centrifugal rotating box is provided with a centrifugal triggering mechanism for feedback of the driven shaft speed.

[0010] Preferably, the centrifugal triggering mechanism includes a conductive ring plate and a centrifugal slider connected to both ends of the return spring, a wire, an iron core disposed at the bottom of the centrifugal rotating chamber, a solenoid wound around the outer wall of the iron core, a DC power supply, a first contact on the centrifugal slider and a second contact on the inner wall of the centrifugal rotating chamber. The second contact, the DC power supply, the solenoid and the conductive ring plate are connected end to end in sequence by the wire. The conductive ring plate is fixed on the inner cavity of the centrifugal rotating chamber. The centrifugal slider is provided with a lubricating oil communication mechanism.

[0011] Preferably, the lubricating oil communication mechanism includes an oil-topping mechanism arranged opposite to each other, a mounting hole penetrating the centrifugal rotating box, and an oil outlet pipe and an oil inlet pipe fixed in the mounting hole. Both the oil outlet pipe and the oil inlet pipe are provided with valves, and the mounting hole is provided with a rounded corner to facilitate the sliding out of the oil-topping mechanism.

[0012] Preferably, the centrifugal slider has a vertically opening connecting hole, and the oil-topping mechanism is set at both ends of the connecting hole. The oil-topping mechanism includes a telescopic oil guide rod connected to both ends of the telescopic spring and a fixing ring. The fixing ring is fixed in the connecting hole, the telescopic spring is in a compressed state, and the telescopic oil guide rod abuts against the inner wall of the centrifugal rotating box.

[0013] Preferably, the driven bevel gear is provided with an oil injection hole, and the oil injection hole is connected to the oil outlet pipe through an oil pipe, and the oil inlet pipe is connected to an external oil inlet device.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. This invention employs a method where, when the rotational speed reaches a certain level, the first contact point and the second contact point come into contact and form a circuit loop. This causes the solenoid to become energized and generate a magnetic field. As a result, the lifting slider, which was originally attracted to the iron core by a ring magnet at the top, now has the same magnetic poles as and repel the ring magnet at the top of the lifting slider. This causes the lifting slider to descend, and the connecting rod can then retract the telescopic gear into the telescopic groove, thereby changing the meshing state of the driving bevel gear and the driven bevel gear, achieving the effect of reducing the speed of the driven shaft and increasing the torque.

[0016] 2. The present invention utilizes the principle that when the telescopic guide rod passes through the valve and is inserted into the oil outlet and oil inlet pipes, the sealing condition is broken. Under the condition of the driven shaft rotating, since the oil injection hole forms a complete oil passage through the oil outlet pipe, the connecting hole and the oil inlet pipe, the telescopic gear can be lubricated as well as the active bevel gear and the driven bevel gear of the meshing transmission can be lubricated. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a high-power, high-torque conical twin-screw reducer proposed in this invention;

[0018] Figure 2 This is a schematic diagram of the driven bevel gear in a high-power, high-torque conical twin-screw reducer proposed in this invention;

[0019] Figure 3 This is a side view of the upper and lower isoangular axes of the driven bevel gear in a high-power, high-torque conical twin-screw reducer proposed in this invention;

[0020] Figure 4 This is a cross-sectional view of the driven bevel gear in a high-power, high-torque conical twin-screw reducer proposed in this invention;

[0021] Figure 5 This is a schematic diagram of the centrifugal rotating housing in a high-power, high-torque conical twin-screw reducer proposed in this invention;

[0022] Figure 6 This is a partial schematic diagram of the centrifugal rotating housing in a high-power, high-torque conical twin-screw reducer proposed in this invention;

[0023] Figure 7 This is a cross-sectional view of the centrifugal rotating housing in a high-power, high-torque conical twin-screw reducer proposed in this invention.

[0024] In the diagram: 1. Gearbox body, 2. Drive shaft, 3. Driven shaft, 31. First shaft, 32. Second shaft, 4. Driven bevel gear, 5. Driven bevel gear, 51. Telescopic bevel gear body, 52. Telescopic groove, 53. Telescopic gear, 54. Swinging chamber, 6. Lifting slider, 7. First shaft platform, 8. Second shaft platform, 9. Connecting rod, 10. Centrifugal rotating housing, 11. Oil injection hole, 12. Conductive ring plate, 13. Return spring, 14. Centrifugal slider, 15. Wire, 16. Iron core, 17. Solenoid, 18. DC power supply, 19. Oil outlet pipe, 20. Oil inlet pipe, 21. Valve, 22. First contact point, 23. Second contact point, 24. Rounded corner, 25. Telescopic oil guide rod, 26. Telescopic spring, 27. Connecting hole, 28. Fixing ring. Detailed Implementation

[0025] Reference Figure 1-7A high-power, high-torque conical twin-screw reducer includes a reducer housing body 1 and a drive shaft 2 and a driven shaft 3 that are perpendicularly inserted into the side wall of the reducer housing body 1. The drive shaft 2 and the driven shaft 3 are driven by meshing drive bevel gear 4 and driven bevel gear 5 to transmit speed and torque.

[0026] Reference Figure 2-4 As shown, the driven shaft 3 includes a first shaft 31 and a second shaft 32, and the driven bevel gear 5 is coaxially fixed with the second shaft 32. Thus, the lifting slider 6 located on the first shaft 31 can adjust the meshing state of the driven bevel gear 5 through the connecting rod 9.

[0027] The driven bevel gear 5 includes a telescopic bevel gear body 51 and multiple tooth telescopic mechanisms arranged circumferentially on the telescopic bevel gear body 51. Each tooth telescopic mechanism includes a telescopic groove 52, telescopic teeth 53, and a swing cavity 54. The fixed teeth on the telescopic bevel gear body 51 and the tooth telescopic mechanisms are arranged alternately. The telescopic groove 52 and the fixed teeth on the telescopic bevel gear body 51 are arranged alternately and equidistantly on the side wall of the telescopic bevel gear body 51. The telescopic teeth 53 slide on the telescopic bevel gear body 51 through the telescopic groove 52. The swing cavity 54 is partially connected to the telescopic groove 52. This arrangement can effectively ensure that by adjusting the extension and retraction of the telescopic teeth 53 in the telescopic groove 52, the number of meshing teeth on the driven bevel gear 5 can be changed. In this way, the rotational speed and torque of the driven shaft 3, which is coaxially arranged with the driven bevel gear 5, can be adjusted. By retracting the telescopic teeth 53 into the telescopic groove 52, the number of meshing teeth between the driven bevel gear 5 and the driving bevel gear 4 can be reduced, thereby reducing the rotational speed of the driven shaft 3 and increasing the torque of the driven shaft 3.

[0028] Below the driven bevel gear 5, there is a lifting slider 6 that slides up and down on the outer wall of the driven shaft 3. The lifting slider 6 is used to adjust the number of meshing teeth between the driven bevel gear 5 and the driving bevel gear 4. The lifting slider 6 is connected to the telescopic gear 53 through a rotating rod mechanism. The rotating rod mechanism includes a second shaft platform 8 set on the side wall of the lifting slider 6, a first shaft platform 7 fixedly installed on the telescopic gear 53, and the same connecting rod 9 rotatably connected to the first shaft platform 7 and the second shaft platform 8. The swing cavity 54 provides movement space for the swing of the connecting rod 9. A ring magnet is provided on the top of the lifting slider 6. By adjusting the lifting position of the lifting slider 6 on the first shaft 31, the number of meshing teeth between the driven bevel gear 5 and the driving bevel gear 4 can be changed, thereby reducing the speed of the driven shaft 3 and increasing the torque of the driven shaft 3.

[0029] A centrifugal rotating box 10 is provided above the lifting slider 6. The centrifugal rotating box 10 is arranged in a ring and is fixed to the outer wall of the first shaft 31. The inner cavity of the centrifugal rotating box 10 is provided with a centrifugal triggering mechanism for feedback of the rotation speed of the driven shaft 3.

[0030] Reference Figure 5-7The centrifugal triggering mechanism includes a conductive ring plate 12 and a centrifugal slider 14 connected to both ends of the return spring 13, a wire 15, an iron core 16 disposed at the bottom of the centrifugal rotating chamber 10, a solenoid 17 wound around the outer wall of the iron core 16, a DC power supply 18, a first contact 22 disposed on the centrifugal slider 14, and a second contact 23 disposed on the inner wall of the centrifugal rotating chamber 10. The second contact 23, the DC power supply 18, the solenoid 17, and the conductive ring plate 12 are connected end to end by the wire 15. The conductive ring plate 12 is fixed to the inner cavity of the centrifugal rotating chamber 10, so that when the driven shaft 3 starts to rotate, the centrifugal slider 14 slides on the inner cavity of the centrifugal rotating chamber 10. The slider 14 moves closer to the second contact 23 via the slider groove (not shown in the figure). When the rotation speed reaches a certain level, the first contact 22 and the second contact 23 come into contact and form a circuit loop, which energizes the solenoid 17 and generates a magnetic field. At this time, the lifting slider 6 is attracted to the iron core 16 by a ring magnet at the top. The magnetic field generated by the solenoid 17 is the same as the magnetic pole of the ring magnet at the top of the lifting slider 6 and they repel each other. Thus, the lifting slider 6 descends and can be driven by the connecting rod 9 to retract the telescopic tooth 53 into the telescopic groove 52, thereby changing the meshing state of the driving bevel gear 4 and the driven bevel gear 5, achieving the effect of reducing the rotation speed of the driven shaft 3 and increasing the torque.

[0031] The centrifugal slider 14 is equipped with a lubricating oil communication mechanism, see reference. Figure 6 As shown, the lubricating oil communication mechanism includes an oil-topping mechanism arranged opposite to each other, a mounting hole penetrating the centrifugal rotating box 10, and an oil outlet pipe 19 and an oil inlet pipe 20 fixed in the mounting hole. Both the oil outlet pipe 19 and the oil inlet pipe 20 are provided with valves 21, wherein the valves 21 are provided to ensure that the oil in the oil outlet pipe 19 and the oil inlet pipe 20 will not leak out.

[0032] The mounting hole has a rounded corner 24 to facilitate the sliding out of the oil-jacking mechanism, which ensures that the telescopic oil guide rod 25 can be removed from the mounting hole more smoothly without obstruction.

[0033] The centrifugal slider 14 has a vertically opening connecting hole 27, and the oil-lifting mechanism is set at both ends of the connecting hole 27. The oil-lifting mechanism includes a telescopic oil guide rod 25 connected to both ends of the telescopic spring 26 and a fixing ring 28. The fixing ring 28 is fixed in the connecting hole 27. The telescopic spring 26 is in a compressed state, and the telescopic oil guide rod 25 abuts against the inner cavity wall of the centrifugal rotating box 10. This ensures that the telescopic oil guide rod 25 extends only when it reaches the oil outlet pipe 19 and the oil inlet pipe 20. Under the action of the telescopic spring 26, it pops out and inserts into the oil outlet pipe 19 and the oil inlet pipe 20.

[0034] The driven bevel gear 5 has an oil injection hole 11, which is connected to the oil outlet pipe 19 via an oil pipe. The oil inlet pipe 20 is connected to an external oil inlet device. This arrangement ensures that the sealing condition is broken when the telescopic guide rod 25 passes through the valve 21 and inserts into the oil outlet pipe 19 and the oil inlet pipe 20. When the driven shaft 3 rotates, the oil injection hole 11 forms a complete oil passage through the oil outlet pipe 19, the connecting hole 27, and the oil inlet pipe 20, thereby achieving lubrication of the telescopic gear 53 and the meshing drive bevel gear 4 and driven bevel gear 5.

[0035] The working principle of this invention is as follows: First, the external load device drives the drive shaft 2 to rotate. The meshing drive bevel gear 4 and driven bevel gear 5 drive the driven shaft 3 to output speed and torque. Then, when the driven shaft 3 rotates too fast, the centrifugal trigger mechanism is triggered, which drives the lower lifting slider 6 to descend. The connecting rod 9 can then take the telescopic gear 53 into the telescopic groove 52, thereby changing the meshing state of the drive bevel gear 4 and driven bevel gear 5, achieving the effect of reducing the speed of the driven shaft 3 and increasing the torque.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-power, high-torque conical twin-screw reducer, comprising a reducer housing body (1) and a drive shaft (2) and a driven shaft (3) perpendicularly inserted into the side wall of the reducer housing body (1), characterized in that, The drive shaft (2) and driven shaft (3) are driven by meshing drive bevel gear (4) and driven bevel gear (5) to transmit rotational speed and torque. The driven shaft (3) includes a first shaft (31) and a second shaft (32). The driven bevel gear (5) includes a telescopic bevel gear body (51) and multiple tooth telescopic mechanisms arranged circumferentially on the telescopic bevel gear body (51). The tooth telescopic mechanism includes a telescopic groove (52), telescopic teeth (53), and a swing cavity (54). The driven bevel gear (5) is coaxially fixed with the second shaft (32). A lifting slider (6) is provided below the driven bevel gear (5) and slides up and down on the outer wall of the driven shaft (3). The lifting slider (6) is used to adjust the number of meshing teeth between the driven bevel gear (5) and the drive bevel gear (4). By adjusting the extension and retraction of the telescopic teeth (53) within the telescopic groove (52), the number of meshing teeth on the driven bevel gear (5) can be changed, thereby adjusting the rotational speed and torque of the driven shaft (3) coaxially arranged with the driven bevel gear (5); a ring magnet is provided on the top of the lifting slider (6), and a centrifugal rotating box (10) is provided above the lifting slider (6). The centrifugal rotating box (10) is arranged in a ring and is fixed to the outer wall of the first shaft (31). The inner cavity of the centrifugal rotating box (10) is provided with a centrifugal triggering mechanism for feedback of the rotational speed of the driven shaft (3); the centrifugal triggering mechanism includes connections to both ends of the return spring (13). The conductive ring plate (12) and centrifugal slider (14), wire (15), iron core (16) set at the bottom of the centrifugal rotating chamber (10), solenoid (17) wound around the outer wall of the iron core (16), DC power supply (18), first contact (22) set on the centrifugal slider (14) and second contact (23) set on the inner wall of the centrifugal rotating chamber (10), the second contact (23), DC power supply (18), solenoid (17) and conductive ring plate (12) are connected end to end by wire (15) in sequence. The conductive ring plate (12) is fixed on the inner cavity of the centrifugal rotating chamber (10). The centrifugal slider (14) is provided with a lubricating oil communication mechanism. The lubricating oil communication mechanism includes an oil-topping mechanism arranged opposite to each other, an installation hole penetrating the centrifugal rotating box (10), and an oil outlet pipe (19) and an oil inlet pipe (20) fixed in the installation hole. Both the oil outlet pipe (19) and the oil inlet pipe (20) are provided with valves (21), and the installation hole is provided with a rounded corner (24) to facilitate the sliding out of the oil-topping mechanism.

2. The high-power, high-torque conical twin-screw reducer according to claim 1, characterized in that, The tooth telescopic mechanism includes a telescopic groove (52), a telescopic tooth (53), and a swing cavity (54). The fixed teeth on the telescopic bevel gear body (51) and the tooth telescopic mechanism are arranged alternately. The telescopic groove (52) and the fixed teeth on the telescopic bevel gear body (51) are arranged alternately and equidistantly on the side wall of the telescopic bevel gear body (51). The telescopic tooth (53) slides on the telescopic bevel gear body (51) through the telescopic groove (52). The swing cavity (54) is partially connected to the telescopic groove (52).

3. A high-power, high-torque conical twin-screw reducer according to claim 2, characterized in that, The lifting slider (6) and the telescopic tooth (53) are connected by a rotating rod mechanism. The rotating rod mechanism includes a second shaft platform (8) set on the side wall of the lifting slider (6), a first shaft platform (7) fixedly installed on the telescopic tooth (53), and the same connecting rod (9) rotatably connected to the first shaft platform (7) and the second shaft platform (8). The swing cavity (54) provides a movement space for the swing of the connecting rod (9). A ring magnet is provided on the top of the lifting slider (6).

4. A high-power, high-torque conical twin-screw reducer according to claim 1, characterized in that, The centrifugal slider (14) has a vertically opening communication hole (27), and the oil-topping mechanism is set at both ends of the communication hole (27). The oil-topping mechanism includes a telescopic oil guide rod (25) connected to both ends of the telescopic spring (26) and a fixing ring (28). The fixing ring (28) is fixed in the communication hole (27). The telescopic spring (26) is in a compressed state, and the telescopic oil guide rod (25) abuts against the inner wall of the centrifugal rotating box (10).

5. A high-power, high-torque conical twin-screw reducer according to claim 4, characterized in that, The driven bevel gear (5) is provided with an oil injection hole (11), and the oil injection hole (11) is connected to the oil outlet pipe (19) through an oil pipe. The oil inlet pipe (20) is connected to an external oil inlet device.

Images