CN214946127U - Novel multiple combination mode gear transmission - Google Patents

Abstract

The utility model relates to a gear change field discloses a novel multiple compound mode gear transmission. Comprises a power input shaft, a power output shaft and a speed reducing device connected between the power input shaft and the power output shaft; the speed reducer comprises a central spindle and a speed reducing mechanism, the speed reducing mechanism comprises n stages of speed reducing assemblies, each stage of speed reducing assembly comprises n speed reducing shafts distributed by taking the central spindle as the center, the speed reducing shafts from the first stage to the last stage in the n stages of speed reducing assemblies are increased in a multiple mode, each speed reducing shaft is provided with a speed reducing large gear positioned on the upper section of the speed reducing shaft and speed reducing shaft teeth on the lower section of the speed reducing shaft, the speed reducing large gear of the first stage of speed reducing assembly is meshed with the input shaft teeth, the speed reducing large gear of each stage is meshed with the speed reducing shaft teeth of the last stage, and the speed reducing shaft teeth of the last stage are meshed with the output external gear; n is a real number and 1 or more. The gear transmission greatly reduces the volume, weight and noise of the transmission and prolongs the service life of the gear transmission.

Description

Novel multiple combination mode gear transmission

Technical Field

The utility model relates to a gear change technical field specifically is a novel multiple compound mode gear transmission.

Background

To achieve speed shifts in some areas, transmissions are often used to address the shift. The transmission is of various types and can be divided into a gear transmission, a worm transmission and a planetary gear transmission according to the transmission type; it can be divided into single-stage and multi-stage transmissions according to the different transmission stages. Gear reduction is widely used as one of the transmissions in large equipment such as man-cargo elevator transmissions in the construction industry, mining equipment and conveyors and other machinery. For example, the elevator has high use frequency and long working time, so that the requirements on the service life and the safety performance of the speed reducer are high, if the speed reducer is replaced in a use period, long-time shutdown or waste of manpower and material resources can be caused, and the speed reducer can be replaced in high altitude, so that greater potential safety hazards can exist. As another example, in the field of cable cars, large reducers are usually used, and the load uniformity and stability of the large torque transmission process directly affect the safety of the cable car.

The prior art has the defects that 1, the interval of supporting bearings of an output main shaft is too short, the stability is poor when the main shaft is stressed, the abrasion is fast and large, the instability and the swing of the main shaft are aggravated, and the factor causing the short service life is one of the factors. 2. Other relatively good planetary reducers adopt a planetary disc and a cantilever shaft in order to reduce the structure, and a planetary transition gear is arranged on the cantilever shaft, but the gear has large swing, poor stability, easy abrasion and relatively short service life. 3. In the prior art, a plurality of planet carriers are utilized to decelerate one by one, so that the transmission has larger volume, increased cost, energy-saving effect and the like, and the space is increased. 4. The speed reduction ratio of the existing speed reducer reaches 1:80, at least 3-4 stages of speed change are needed to be realized, and the efficiency of the speed reducer needs to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel multiple compound mode gear transmission to solve the great life-span that causes of wearing and tearing that proposes among the above-mentioned background art short, the little scheduling problem of moment of torsion of realization.

In order to realize the purpose of the utility model, the utility model adopts the technical proposal that: a novel multi-combination gear transmission comprises a power input shaft, a power output shaft and a speed reduction device, wherein the speed reduction device is used for connecting the power input shaft and the power output shaft to realize power transmission;

the speed reducer comprises a central main shaft and a speed reducing mechanism, wherein the lower section of the central main shaft is provided with input shaft teeth and is in transmission connection with the speed reducing mechanism through the input shaft teeth;

the power output shaft is coaxially arranged below the central main shaft, and an output external gear is fixedly arranged at the upper section of the power output shaft and is in transmission connection with the speed reducing mechanism through the output external gear;

the speed reducing mechanism comprises n stages of speed reducing components, each stage of speed reducing component comprises n speed reducing shafts distributed by taking a central main shaft as the center, the speed reducing shafts from the first stage to the last stage in the n stages of speed reducing components are increased in a multiple manner, each speed reducing shaft is provided with a speed reducing large gear positioned on the upper section of the speed reducing shaft and speed reducing shaft teeth positioned on the lower section of the speed reducing shaft, the speed reducing large gear of the first stage of speed reducing component is meshed with the input shaft teeth, the speed reducing large gear of each stage of speed reducing component is meshed with the speed reducing shaft teeth of the last stage of speed reducing component, and the speed reducing shaft teeth of the last stage of speed reducing component are meshed with the output external gear;

and n is a real number and is greater than or equal to 1.

Preferably, the power input shaft extends along the transverse direction and forms an included angle of 90 degrees with the central main shaft.

Preferably, a flange sleeve is fixedly arranged outside the upper section of the central main shaft, a spiral bevel gear is connected to the flange sleeve through a flange, and a bevel gear is arranged at the inner end of the power input shaft; the bevel gear is meshed with the spiral basin teeth to form transmission.

Preferably, still include the box, the box includes spiral basin tooth end cover, well biography case and the output bearing case through bolted connection from top to bottom in proper order.

Preferably, a first bearing and a second bearing are sequentially arranged between the spiral bevel gear end cover and the upper end of the central main shaft from top to bottom; the middle part of the middle transmission box is also provided with a first central shoulder, and a third bearing is arranged between the first central shoulder and the lower end of the central main shaft.

Preferably, a fourth bearing is arranged between the outer end of the power input shaft and the middle transmission box, and a fifth bearing is arranged between the inner end of the power input shaft and the middle transmission box.

Preferably, a sixth bearing is arranged between the upper end of the power output shaft and the central shoulder, and a seventh bearing is arranged between the lower end of the power output shaft and the output bearing box.

Preferably, a second central shoulder is arranged in the middle transmission box or the output bearing box opposite to the two ends of the speed reducing shaft, and an eighth bearing is arranged between the upper end and the lower end of the speed reducing shaft and the second central shoulder.

Preferably, a first sealing end cover is arranged on the middle transmission box corresponding to the outer end of the power input shaft, and a second sealing end cover is arranged on the output bearing box corresponding to the lower end of the power output shaft; and the first sealing end cover and the second sealing end cover are respectively connected with the intermediate transmission box and the output bearing box through bolts.

Preferably, the lower end face of the output bearing box and the end face of the middle transmission box opposite to the power input shaft are provided with connecting seats.

The beneficial effects of the utility model are concentrated and are embodied in: 1. the device can realize 90 degrees corner transmission, and the installation is convenient with the dismantlement, has reduced the shared space of installation simultaneously. 2. The device has a large reduction ratio, the modulus of teeth can be reduced due to multi-path (1-4) transmission, the number of teeth of the gear is increased under the same size, the transmission ratio is increased, the reduction ratio reaches 1:200, and the device can be realized only by 3-4 stages of transmission. 3. The device is small and has a large reduction ratio, i.e. the gear change device is relatively small in volume under the condition of the same reduction ratio. 4. The device is ultra-low in noise during operation, external tooth transmission (ultra-silence) with relatively high precision is adopted during front high-speed rotation, and external tooth transmission with relatively high precision is also adopted during final output, so that low noise can be realized in the middle of similar planetary reducers. 5. The device can realize large torque, under the same size condition, the output reduction ratio is larger (the output mechanical torque is equal to the reduction ratio of the input torque x of the motor, and the output torque is larger, 6. the device has high stability and longer service life, because all shafts are supported by the largest wheel base and the heavy-duty bearing as far as possible, the device has better stability to prolong the service life of the gear and the shaft, simultaneously, the low noise can reduce the positive abrasion of the gear or the bearing, and can also prolong the service life, 7. the device can realize ultra-low cost, because the device completely adopts the external gear transmission and the structure without the planet carrier, the manufacturing cost of the external gear is much lower than that of the internal gear, the manufacturing cost is further reduced without the planet carrier, and therefore, the ultra-low cost can be realized, 8. the device can realize larger energy-saving effect, in large transmission ratio, the transmission stage is reduced, the self weight and the mechanical resistance are reduced, and the greater energy-saving effect is realized.

Drawings

Fig. 1 is an internal cross-sectional view of a first embodiment of the present invention;

fig. 2 shows a first transmission principle of the first embodiment of the present invention;

fig. 3 illustrates a second transmission principle of the first embodiment of the present invention;

fig. 4 shows a third transmission principle of the first embodiment of the present invention;

fig. 5 shows a fourth transmission principle of the first embodiment of the present invention;

fig. 6 is an internal cross-sectional view of a second embodiment of the present invention;

fig. 7 illustrates a first transmission principle of a second embodiment of the present invention;

fig. 8 illustrates a second transmission principle of a second embodiment of the present invention;

fig. 9 shows a third transmission principle of the second embodiment of the present invention;

fig. 10 shows a fourth transmission principle of the second embodiment of the present invention;

fig. 11 shows a fifth transmission principle of the second embodiment of the present invention;

FIG. 12 is a simplified drive of the present invention;

in the attached drawings, 1, a power input shaft; 2. a power take-off shaft; 3. a central main shaft; 4. an input shaft tooth; 5. an output outer gear; 6. a deceleration shaft; 7. a deceleration gearwheel; 8. a reduction shaft gear; 9. a flange sleeve; 10. spiral basin teeth; 11. a bevel gear; 12. a spiral bevel gear end cover; 13. a transfer box; 14. an output bearing housing; 15. A first bearing; 16. a second bearing; 17. a first center shoulder; 18. a third bearing; 19. a fourth bearing; 20. a fifth bearing; 21. a sixth bearing; 22. a seventh bearing; 23. a second center shoulder; 24. An eighth bearing; 25. a first end seal cap; 26. a second end seal cap; 27. a connecting seat.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

Referring to fig. 1 to 12, a novel multi-combination gear transmission includes a power input shaft 1, a power output shaft 2, and a speed reducer for connecting the power input shaft 1 and the power output shaft 2 to realize power transmission; when the reduction ratio of the speed reducer is 1:200, the speed reducer can be realized only by 3-4 stages of transmission, and the output torque is increased.

The speed reducer comprises a central main shaft 3 and a speed reducing mechanism, wherein the lower section of the central main shaft 3 is provided with input shaft teeth 4 and is in transmission connection with the speed reducing mechanism through the input shaft teeth 4;

the power output shaft 2 is coaxially arranged below the central main shaft 3, and an output external gear 5 is fixedly arranged at the upper section of the power output shaft 2 and is in transmission connection with the speed reducing mechanism through the output external gear 5;

the speed reducing mechanism comprises n stages of speed reducing components, each stage of speed reducing component comprises n speed reducing shafts 6 distributed by taking the central main shaft 3 as the center, the speed reducing shafts 6 from the first stage to the last stage in the n stages of speed reducing components are increased in a multiple manner, each speed reducing shaft 6 is provided with a speed reducing large gear 7 positioned on the upper section of the speed reducing shaft 6 and speed reducing shaft teeth 8 positioned on the lower section of the speed reducing shaft, the speed reducing large gear 7 of the first stage of speed reducing component is meshed with the input shaft teeth 4, the speed reducing large gear 7 of the later stage of speed reducing component is respectively meshed with the speed reducing shaft teeth 8 of the last stage, and the speed reducing shaft teeth 8 of the last stage of speed reducing component are meshed with the output external gear 5;

and n is a real number and is greater than or equal to 1.

The power input shaft 1, the power output shaft 2, the central main shaft 3, the reduction shaft 6 and the reduction gear wheel 7 can be made of conventional available carbon steel (such as 45 steel) or alloy steel (such as 40Cr), and can also be made of materials such as non-metallic nylon and bakelite.

Specifically, in order to change the transmission direction and reduce the installation space, the power input shaft 1 extends transversely and forms an included angle of 90 degrees with the central spindle 3. Further, a flange sleeve 9 is fixedly arranged outside the upper section of the central spindle 3, a spiral basin tooth 10 is connected to the flange on the flange sleeve 9, a bevel gear 11 is arranged at the inner end of the power input shaft 1, and the bevel gear 11 and the spiral basin tooth 10 are meshed to form transmission.

The helical bevel gear 10, the reduction gear wheel 7 and the output external gear 5 may all use low carbon steel such as 20# steel, low carbon alloy steel such as: 20Cr, 20CrMnTi, etc., medium carbon steels such as: 35# steel, 45# steel, and the like, and medium carbon alloy steels such as: 40Cr, 42CrMo, 35CrMo, etc., or non-metallic nylon, bakelite, etc.

Specifically, the gear transmission further comprises a box body, the box body sequentially comprises a spiral bevel gear end cover 12, a middle transmission box 13 and an output bearing box 14 which are connected through bolts from top to bottom, and the box body is arranged according to the shape of the speed reducer and has a proper space.

Specifically, in order to realize the set rotation of each shaft in the box body, a first bearing 15 and a second bearing 16 are sequentially arranged between the spiral bevel gear end cover 12 and the upper end of the central main shaft 3 from top to bottom; the middle part of the middle transmission box 13 is also provided with a first central shoulder 17, and a third bearing 18 is arranged between the first central shoulder 17 and the lower end of the central main shaft 3. Further, a fourth bearing 19 is arranged between the outer end of the power input shaft 1 and the intermediate transmission case 13, and a fifth bearing 20 is arranged between the inner end of the power input shaft 1 and the intermediate transmission case 13. Still further, a sixth bearing 21 is arranged between the upper end of the power output shaft 2 and the central shoulder, and a seventh bearing 22 is arranged between the lower end of the power output shaft 2 and the output bearing box 14.

Specifically, second center shoulders 23 are arranged in the intermediate transfer case 13 or the output bearing case 14 opposite to the two ends of the speed reduction shaft 6, the number of the second center shoulders 23 is matched with the number of the speed reduction shafts 6, so that the support of the n-stage speed reduction assembly is realized, and further, eighth bearings 24 are arranged between the upper end and the lower end of the speed reduction shaft 6 and the second center shoulders 23, so that the predetermined rotation between the speed reduction shaft 6 and the second center shoulders 23 is realized.

The first bearing 15, the second bearing 16, the third bearing 18, the fourth bearing 19, the fifth bearing 20, the sixth bearing 21, the seventh bearing 22 and the eighth bearing 24 may all be conventional deep groove ball bearings or cylindrical roller bearings.

Specifically, in order to realize box body sealing, a first sealing end cover 25 is arranged on the middle transmission box 13 corresponding to the outer end of the power input shaft 1, a second sealing end cover 26 is arranged on the output bearing box 14 corresponding to the lower end of the power output shaft 2, sealing parts such as rubber sealing rings can be arranged between the first sealing end cover 25 and the power input shaft 1 as well as between the second sealing end cover 26 and the power output shaft 2, and the first sealing end cover 25 and the second sealing end cover 26 are respectively connected with the middle transmission box 13 and the output bearing box 14 through bolts, so that the disassembly is convenient.

Specifically, in order to realize that the gear transmission can be connected with other parts when in use, the lower end face of the output bearing box 14 and the end face of the middle transmission box 13 opposite to the power input shaft 1 are both provided with a connecting seat 27, and the connecting seat 27 is provided with a connecting hole for a bolt or other connecting pieces to use.

According to the transmission principle, when the power input shaft 1 rotates under the action of an input external force, the bevel gear 11 on the power input shaft 1 drives the spiral bevel gear 10 on the central spindle 3 to rotate, then the input shaft teeth 4 on the central spindle 3 drive the large reduction gear 7 on the first reduction shaft 6 to rotate, then the reduction shaft teeth 8 on the first reduction shaft 6 drive the large reduction gear 7 on the subsequent reduction shaft to rotate, and so on, then the reduction shaft teeth 8 on the last reduction shaft drive the external output gear 5 on the power output shaft 2 to rotate, and the power output shaft 2 realizes power output.

According to the gear transmission, the reduction shafts 6 from the first stage to the last stage are increased in multiple times in sequence, and the reduction gear wheel 7 and the reduction shaft teeth 8 on each reduction shaft 6 are also increased in multiple times in sequence, so that a large reduction ratio is realized and transmitted, and further, large-torque transmission is realized; the gear transmission has the advantages of compact structure, good tightness, stable transmission and long service life.

It should be noted that when the gear transmission transmits input power from the power input shaft 1, speed reduction and speed change can be realized; conversely, when the input power is transmitted from the output external gear 5, a speed-increasing and speed-changing operation is realized.

The above, only be the specific implementation of the utility model discloses, nevertheless the utility model discloses a protection scope is not limited to this, and the shape and the structure of box and bearing are not only limited and only the form and the structure that mention in this patent, and what focus in this implementation case is mechanical transmission principle structure, and the box also can realize the transmission structure principle of this patent with bearing shape and connected mode suitable change. Any changes or substitutions which are not imaginable by the inventive work are intended to be covered by the scope of protection of the present invention.

Claims (10)

1. A novel multi-combination gear transmission comprises a power input shaft (1), a power output shaft (2) and a speed reduction device, wherein the speed reduction device is used for connecting the power input shaft (1) and the power output shaft (2) to realize power transmission;

the speed reducer is characterized by comprising a central main shaft (3) and a speed reducing mechanism, wherein the lower section of the central main shaft (3) is provided with input shaft teeth (4) and is in transmission connection with the speed reducing mechanism through the input shaft teeth (4);

the power output shaft (2) is coaxially arranged below the central main shaft (3), and an output external gear (5) is fixedly arranged at the upper section of the power output shaft (2) and is in transmission connection with the speed reducing mechanism through the output external gear (5);

the speed reducing mechanism comprises n stages of speed reducing assemblies, each stage of speed reducing assembly comprises n speed reducing shafts (6) distributed by taking the central spindle (3) as the center, the speed reducing shafts (6) from the first stage to the last stage in the n stages of speed reducing assemblies are increased in a multiple mode successively, each speed reducing shaft (6) is provided with a speed reducing large gear (7) positioned on the upper section of the speed reducing shaft (6) and speed reducing shaft teeth (8) positioned on the lower section of the speed reducing shaft, the speed reducing large gear (7) of the first stage of speed reducing assembly is meshed with the input shaft teeth (4), the speed reducing large gears (7) of the later stages of speed reducing assemblies are respectively meshed with the speed reducing shaft teeth (8) of the last stage of speed reducing assembly, and the speed reducing shaft teeth (8) of the last stage of speed reducing assembly are meshed with the output external gear (5);

and n is a real number and is greater than or equal to 1.

2. A new multiple combination gear transmission according to claim 1, characterised in that the power input shaft (1) extends in the transverse direction and is at an angle of 90 ° to the central main shaft (3).

3. The novel multi-combination gear transmission is characterized in that a flange sleeve (9) is fixedly arranged outside the upper section of the central main shaft (3), spiral bevel gears (10) are connected to the flange sleeve (9) in a flange mode, and a bevel gear (11) is arranged at the inner end of the power input shaft (1); the bevel gear (11) is meshed with the spiral basin teeth (10) to form transmission.

4. The novel multi-combination gear transmission as claimed in claim 3, further comprising a box body, wherein the box body sequentially comprises a spiral bevel gear end cover (12), a middle transmission box (13) and an output bearing box (14) which are connected through bolts from top to bottom.

5. The novel multi-combination gear transmission as claimed in claim 4, wherein a first bearing (15) and a second bearing (16) are sequentially arranged between the spiral bevel gear end cover (12) and the upper end of the central main shaft (3) from top to bottom; the middle part of the middle transmission box (13) is also provided with a first central shoulder (17), and a third bearing (18) is arranged between the first central shoulder (17) and the lower end of the central main shaft (3).

6. A novel multi-combination gear transmission as claimed in claim 4, characterized in that a fourth bearing (19) is arranged between the outer end of the power input shaft (1) and the intermediate gearbox (13), and a fifth bearing (20) is arranged between the inner end of the power input shaft (1) and the intermediate gearbox (13).

7. A new multiple combination gear transmission according to claim 4, characterized in that a sixth bearing (21) is arranged between the upper end of the power take-off shaft (2) and the central shoulder, and a seventh bearing (22) is arranged between the lower end of the power take-off shaft (2) and the output bearing housing (14).

8. A novel multi-combination gear transmission as claimed in claim 4, characterized in that a second central shoulder (23) is arranged in the intermediate transfer case (13) or the output bearing case (14) opposite to the two ends of the reduction shaft (6), and an eighth bearing (24) is arranged between the upper and lower ends of the reduction shaft (6) and the second central shoulder (23).

9. The novel multi-combination gear transmission is characterized in that a first sealing end cover (25) is arranged on a middle transmission box (13) corresponding to the outer end of a power input shaft (1), and a second sealing end cover (26) is arranged on an output bearing box (14) corresponding to the lower end of a power output shaft (2); the first sealing end cover (25) and the second sealing end cover (26) are respectively connected with the intermediate transmission box (13) and the output bearing box (14) through bolts.

10. The novel multi-combination gear transmission as claimed in claim 9, wherein the lower end face of the output bearing box (14) and the end face of the middle transmission box (13) opposite to the power input shaft (1) are provided with connecting seats (27).

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