CN211730924U - Combined wheel for central driving type electric drive system assembly - Google Patents
Combined wheel for central driving type electric drive system assembly Download PDFInfo
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- CN211730924U CN211730924U CN201922490758.9U CN201922490758U CN211730924U CN 211730924 U CN211730924 U CN 211730924U CN 201922490758 U CN201922490758 U CN 201922490758U CN 211730924 U CN211730924 U CN 211730924U
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Abstract
The utility model discloses a combination formula wheel for central drive formula electric drive system assembly, including wheel hub support, wheel hub and the tire that sets gradually from inside to outside coaxial, the wheel hub support is used for input power and installation wheel hub, and wheel hub is hollow structure, and this wheel hub detachably installs on the wheel hub support, and the tire suit is on wheel hub. Technical scheme more than adopting utilizes brand-new integrated configuration, and not only structural strength is high, and the good reliability, wheel hub can pull down from the wheel hub support easily moreover, no matter the dismouting, all need not to tear down motor and variable speed system to can realize changing the child fast, improve the convenience that central drive formula electric drive system assembly maintained.
Description
Technical Field
The utility model relates to a wheel, concretely relates to combination formula wheel for central drive formula electric drive system assembly.
Background
With the increasing strictness of environmental regulations, new energy vehicles represented by pure electric powered automobiles, two-wheeled vehicles and three-wheeled vehicles have become a great trend to replace traditional fuel vehicles. The existing two-wheeled electric vehicle generally adopts a hub motor and a motor side-hanging structure.
The wheel hub motor is directly driven by the low-speed direct current motor, so that the efficiency is relatively low, the heat productivity is large, the original balance of the wheel structure is broken due to the large size and heavy weight of the motor, and the control performance and the safety are influenced to a certain extent.
The side-hung type structure places the motor and the speed change system (gearbox or reducer) on the same side of the driving wheel, and although a high-speed motor can be adopted to improve the mechanical efficiency, the weight of the speed change mechanism and the motor is heavier, so that the balance of the wheel is poor, and the influence on the two-wheeled vehicle is more obvious.
In order to have the advantage of the hanging structure of wheel hub motor and motor side concurrently, compensate the two not enough, the utility model discloses the people has designed a brand-new central drive formula electric drive system assembly, and motor and speed change system are located the both sides of wheel respectively, not only can guarantee well to rotate output member's equilibrium, have high mechanical efficiency moreover, less calorific capacity, better heat-sinking capability and lighter weight. However, when the tire is damaged or needs to be replaced old, it is difficult to assemble and disassemble the hub and the tire together conveniently and quickly by using the conventional wheel because the wheel is provided with the motor and the speed change system, and it is urgent to solve the above problems.
SUMMERY OF THE UTILITY MODEL
For the wheel hub and the tire of solving central drive formula electric drive system assembly be difficult to the technical problem of dismouting, the utility model provides a combination formula wheel for central drive formula electric drive system assembly.
The technical scheme is as follows:
a combined wheel for a central drive type electric drive system assembly is characterized by comprising the following components which are coaxially arranged from inside to outside in sequence:
a hub bracket for inputting power and mounting a hub;
the hub is of a hollow structure and is detachably arranged on the hub bracket;
the tire is sleeved on the hub.
By adopting the structure, the motor and the speed change system of the central driving type electric driving system assembly are respectively arranged on two sides of the hub support, the hub can be easily detached from the hub support, and the motor and the speed change system do not need to be detached no matter in disassembly and assembly, so that the tire can be quickly replaced, and the convenience in maintenance of the central driving type electric driving system assembly is improved.
Preferably, the method comprises the following steps: the outer ring of the hub support is provided with a hub mounting ring, the inner ring of the hub is provided with a hub mounting ring matched with the hub mounting ring, and the hub mounting ring can be detachably fixed on the hub mounting ring through a plurality of bolts. By adopting the structure, the hub bracket and the hub can be connected through the bolt, and the hub bracket is stable and reliable, easy to disassemble and assemble and low in cost.
Preferably, the method comprises the following steps: the hub support further comprises a power input disc coaxially arranged in the hub mounting ring, the hub mounting ring is connected with the power input disc through a plurality of support connecting ribs, and a driving shaft hole is formed in the center of the power input disc. By adopting the structure, the structure has high structural strength, stability, reliability and lighter weight, and can realize the purpose of weight reduction.
Preferably, the method comprises the following steps: the hole wall of the driving shaft hole is of a spline structure. With the above structure, the power transmission device can be spline-fitted to the shaft, and stably and reliably transmits power.
Preferably, the method comprises the following steps: one side of the power input disc is concave to form a concave cavity, a power input shaft sleeve is arranged at the center of the concave cavity, and the shaft hole of the power input shaft sleeve is the driving shaft hole. By adopting the structure, the power input shaft sleeve is basically hidden in the concave cavity, and the overall appearance is improved.
Preferably, the method comprises the following steps: the cavity is internally provided with a plurality of reinforcing ribs, each reinforcing rib is distributed around the power input shaft sleeve along the circumferential direction, and the two ends of each reinforcing rib are respectively connected with the cavity wall of the cavity and the outer wall of the power input shaft sleeve. By adopting the structure, the structural strength of the power input disc and the power input shaft sleeve can be greatly improved.
Preferably, the method comprises the following steps: and a circular ring-shaped flange is formed on the disc surface on one side of the power input disc opposite to the concave cavity in a protruding manner, and a plurality of reinforcing lugs are arranged on the outer peripheral surface of the flange. By adopting the structure, the structural strength of the flange can be ensured.
Preferably, the method comprises the following steps: the hub further comprises a tire mounting ring coaxially arranged outside the hub mounting ring, and the tire mounting ring is connected with the hub mounting ring through a plurality of hub connecting ribs. By adopting the structure, the structure has high structural strength, stability, reliability and lighter weight, and can realize the purpose of weight reduction.
Preferably, the method comprises the following steps: and the surface of one side of the hub mounting ring for mounting the hub mounting ring is provided with a mounting sinking platform matched with the hub mounting ring. By adopting the structure, the mounting sinking platform can position the hub mounting ring, the assembly efficiency is improved, and the connection reliability of the hub bracket and the hub can be improved.
Preferably, the method comprises the following steps: the hub bracket and the hub are integrally formed. By adopting the structure, the structure has high strength and good reliability.
Compared with the prior art, the beneficial effects of the utility model are that:
the combined wheel for the central driving type electric driving system assembly is novel in structure, ingenious in design and easy to achieve, adopts a brand new combined structure, is high in structural strength and good in reliability, and a hub can be easily detached from a hub support without detaching a motor and a speed change system, so that quick tire replacement can be achieved, and the convenience in maintenance of the central driving type electric driving system assembly is improved.
Drawings
FIG. 1 is a cross-sectional view of a center-driven electric drive system assembly;
FIG. 2 is a schematic diagram of the matching relationship between the motor, the transmission shaft and the speed change mechanism;
FIG. 3 is a schematic diagram of a central drive type electric drive system assembly;
FIG. 4 is a schematic structural view of a composite wheel;
FIG. 5 is a cross-sectional view of the composite wheel;
FIG. 6 is a schematic view of a hub bracket from one of its views;
FIG. 7 is a schematic view of another perspective of the hub bracket;
FIG. 8 is a schematic view of the hub from one of the views;
fig. 9 is a schematic view of another perspective of the hub.
Detailed Description
The present invention will be further described with reference to the following examples and accompanying drawings.
As shown in fig. 1 and fig. 3, a central driving type electric driving system assembly mainly includes a rotation output member 1 and a transmission shaft 2 penetrating through the rotation output member 1, a power system and a speed change system are mounted on the transmission shaft 2, the power system and the speed change system are respectively located at two sides of the rotation output member 1, the power system transmits power to the speed change system through the transmission shaft 2, and the speed change system drives the rotation output member 1 to output power.
Through the central drive formula structure of brand-new design, had the advantage of in-wheel motor and side-hung structure concurrently, compensatied in-wheel motor and the not enough of side-hung structure, be particularly useful for the two wheeler, not only can guarantee well the equilibrium of rotation output part, have high mechanical efficiency moreover, less calorific capacity, better heat-sinking capability and lighter weight.
In this embodiment, the rotation output member 1 is a combined wheel. Referring to fig. 4 and 5, a combined wheel for a central drive type electric drive system assembly includes a hub bracket 1a, a hub 1b and a tire 1c, which are coaxially arranged from inside to outside. The speed change system drives the hub bracket 1a to drive the combined wheel to rotate. The hub 1b is a hollow structure, and the hub 1b is detachably mounted on the hub bracket 1 a. The tire 1c is sleeved on the hub 1 b.
Referring to fig. 4-9, the outer ring of the hub bracket 1a has a hub mounting ring 1a1, the inner ring of the hub 1b has a hub mounting ring 1b1 corresponding to the hub mounting ring 1a1, and the hub mounting ring 1b1 can be detachably fixed on the hub mounting ring 1a1 by a plurality of bolts 1 d. A power system and a speed change system of the central driving type electric driving system assembly are respectively arranged on two sides of a hub bracket 1a, when a tire 1c needs to be replaced or repaired, the hub 1b and the tire 1c can be taken down together only by taking down all bolts 1d (the power system and the speed change system do not need to be disassembled), and the method is completely the same as the traditional method, so that the tire can be quickly replaced, and the convenience of maintenance of the central driving type electric driving system assembly is improved.
Referring to fig. 6 and 7, the hub bracket 1a further includes a power input disc 1a2 coaxially disposed in the hub mounting ring 1a1, and the hub mounting ring 1a1 and the power input disc 1a2 are connected by a plurality of bracket connecting ribs 1a3, so that the hub bracket has high structural strength, is stable and reliable, has light weight, and can achieve the purpose of reducing weight.
The power input disc 1a2 has a drive shaft hole 1a21 at the center thereof, and the hole wall of the drive shaft hole 1a21 has a spline structure, so that power transmission can be performed stably and reliably.
A concave cavity 1a22 is formed at one side of the power input disc 1a2, a power input shaft sleeve 1a23 is arranged at the center position of the concave cavity 1a22, and the shaft hole of the power input shaft sleeve 1a23 is the driving shaft hole 1a 21. The power input sleeve 1a23 is substantially hidden in the cavity 1a22, improving the overall appearance.
The cavity 1a22 is provided with a plurality of reinforcing ribs 1a24, the reinforcing ribs 1a24 are distributed around the power input shaft sleeve 1a23 along the circumferential direction, and two ends of each reinforcing rib 1a24 are respectively connected with the cavity wall of the cavity 1a22 and the outer wall of the power input shaft sleeve 1a23, so that the structural strength of the power input disc 1a2 and the power input shaft sleeve 1a23 can be greatly improved. A circular ring-shaped flange 1a25 is formed on the surface of one side of the power input disc 1a2 opposite to the concave cavity 1a22 in a protruding mode, and a plurality of reinforcing lugs 1a26 are arranged on the outer peripheral surface of the flange 1a25, so that the structural strength of the flange 1a25 can be guaranteed.
Referring to fig. 8 and 9, the wheel hub 1b further includes a tire mounting ring 1b2 coaxially disposed outside the wheel hub mounting ring 1b1, and the tire mounting ring 1b2 and the wheel hub mounting ring 1b1 are connected by a plurality of wheel hub connecting ribs 1b3, so that the wheel hub has high structural strength, is stable and reliable, has light weight, and can achieve the purpose of reducing weight. In addition, the surface of one side of the hub connecting rib 1b3 is provided with a weight reduction groove 1b31, so that the weight reduction function is realized on the premise of ensuring the structural strength. The side surface of wheel hub installing ring 1b1 installation wheel hub installing ring 1a1 has the heavy platform of installation 1b11 that suits with wheel hub installing ring 1a1, and the heavy platform of installation 1b11 can enough fix a position wheel hub installing ring 1a1, improves assembly efficiency, can improve the reliability that wheel hub support 1a and wheel hub 1b are connected again.
Further, in order to improve the reliability of the hub bracket 1a and the hub 1b, the hub bracket 1a and the hub 1b are integrally formed.
Referring to fig. 1 and 2, the power system includes a motor 3 sleeved on a transmission shaft 2 and used for driving the transmission shaft 2 to rotate, and a power system box 4 wrapped outside the motor 3, wherein the motor 3 and the power system box 4 are fixed on the transmission shaft 2 through a power system locking part 6. The transmission system includes a transmission mechanism for transmitting a transmission between the transmission shaft 2 and the composite wheel, and a transmission housing 5 enclosed outside the transmission mechanism, the transmission mechanism and the transmission housing 5 being fixed to the transmission shaft 2 by a transmission locking member 7. It should be noted that the size of the power system case 4 and the transmission system case 5 is smaller than the size of the inner ring of the hub mounting ring 1b1, so that the hub bracket 1a and the hub 1b can be detached leftwards and rightwards, the flexibility is high, and the transmission system case is suitable for different situations.
Referring to fig. 1, the power system case 4 includes a power box base 4a for accommodating the motor 3 and a power box cover 4b capable of covering the power box base 4a, and the transmission system case 5 includes a transmission case base 5a for accommodating the transmission mechanism and a transmission case cover 5b covering the transmission case base 5 a. After the power box base 4a and the motor 3 are sequentially arranged on the transmission shaft 2, the power box base and the motor are firstly locked through the power system locking part 6, then the power box cover 4b is covered on the power box base 4a, and then the first end cover 4c of the transmission shaft is covered on the power box cover 4 b. The gearbox base 5a, the speed change mechanism and the gearbox cover 5b are sequentially arranged on the transmission shaft 2, and then are locked by the speed change system locking part 7, and then the second end cover 5c of the transmission shaft is covered on the gearbox cover 5 b.
Referring to fig. 1 and 2, the power system locking component 6 and the transmission system locking component 7 are half-moon keys, and the transmission shaft 2 is provided with half-moon key mounting grooves corresponding to the half-moon keys.
Referring to fig. 1 and 3, the central drive type electric drive system assembly further includes a bottom fork 8, and two main pipes of the bottom fork 8 are fixedly connected to the power box base 4a and the transmission case base 5a, respectively. When the tire 1c needs to be replaced, the chain stay 8 is separated from the other components.
Referring to fig. 2, the speed change mechanism includes a first-stage driving gear 9 fixedly sleeved on the transmission shaft 2, a deceleration intermediate shaft 11 parallel to the transmission shaft 2, a first-stage driven gear 10 fixedly sleeved on the deceleration intermediate shaft 11, a hub driving sleeve 13 movably sleeved on the transmission shaft 2, and a second-stage driven gear 12 fixedly sleeved on the hub driving sleeve 13, the first-stage driving gear 9 is engaged with the first-stage driven gear 10, the deceleration intermediate shaft 11 is provided with a second-stage driving tooth 11a engaged with the second-stage driven gear 12, the hub driving sleeve 13 can drive the combined wheel to synchronously rotate, and a thrust ball bearing 14 is arranged between the hub driving sleeve 13 and the first-stage driving gear 9.
The motor 3 drives the transmission shaft 2 to rotate, the transmission shaft 2 drives the first-stage driving gear 9 to rotate, the first-stage driving gear 9 drives the first-stage driven gear 10 to rotate, the first-stage driven gear 10 drives the speed reduction intermediate shaft 11 to rotate, the second-stage driving gear 11a drives the second-stage driven gear 12 to rotate, and the second-stage driven gear 12 drives the hub driving sleeve 13 to rotate.
Referring to fig. 2, the hub driving sleeve 13 has a first-stage step surface 13a and a second-stage step surface 13b, the protrusion height of the first-stage step surface 13a is higher than that of the second-stage step surface 13b, the combined wheel is sleeved on the first-stage step surface 13a and is in spline fit with the first-stage step surface 13a, and the second-stage driven gear 12 is sleeved on the second-stage step surface 13b and is in spline fit with the second-stage step surface 13 b.
And a motor shaft 3a of the motor 3 is of a hollow sleeve structure, and the motor shaft 3a is sleeved on the transmission shaft 2 and is in spline fit with the transmission shaft 2. The rotor of the motor 3 drives the motor shaft 3a to rotate, and the motor shaft 3a drives the transmission shaft 2 to rotate synchronously with the transmission shaft.
Referring to fig. 1 and 2, an encoder 17 is mounted on the transmission shaft 2, and the encoder 17 is located between the first end cover 4c of the transmission shaft and the cover 4b of the power box and can convert the rotation speeds of the motor 3 and the transmission shaft 2 into a signal form for feedback.
Referring to fig. 1, a power box oil seal 15 is arranged between the hub driving sleeve 13 and the power system box 4, and a transmission oil seal 16 is arranged between the hub driving sleeve 13 and the transmission system box 5, so as to ensure the sealing performance of the power system box 4 and the transmission system box 5 and prevent engine oil leakage.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.
Claims (10)
1. A combined wheel for a central drive type electric drive system assembly is characterized by comprising the following components which are coaxially arranged from inside to outside in sequence:
a hub bracket (1a) for inputting power and mounting a hub (1 b);
a hub (1b) having a hollow structure, the hub (1b) being detachably mounted on the hub bracket (1 a);
and a tire (1c) fitted around the hub (1 b).
2. The unitized wheel for a center-driven electric drive system assembly of claim 1, wherein: the outer ring of the hub bracket (1a) is provided with a hub mounting ring (1a1), the inner ring of the hub (1b) is provided with a hub mounting ring (1b1) matched with the hub mounting ring (1a1), and the hub mounting ring (1b1) can be detachably fixed on the hub mounting ring (1a1) through a plurality of bolts (1 d).
3. A unitized wheel for a center-driven electric drive system assembly according to claim 2, wherein: the hub bracket (1a) further comprises a power input disc (1a2) coaxially arranged in the hub mounting ring (1a1), the hub mounting ring (1a1) and the power input disc (1a2) are connected through a plurality of bracket connecting ribs (1a3), and a driving shaft hole (1a21) is formed in the center of the power input disc (1a 2).
4. A unitized wheel for a center-driven electric drive system assembly according to claim 3, wherein: the hole wall of the driving shaft hole (1a21) is in a spline structure.
5. A unitized wheel for a center-driven electric drive system assembly according to claim 3, wherein: a concave cavity (1a22) is formed in one side of the power input disc (1a2) in a concave mode, a power input shaft sleeve (1a23) is arranged in the center of the concave cavity (1a22), and the shaft hole of the power input shaft sleeve (1a23) is the driving shaft hole (1a 21).
6. The unitized wheel for a center-driven electric drive system assembly of claim 5, wherein: the cavity (1a22) is internally provided with a plurality of reinforcing ribs (1a24), each reinforcing rib (1a24) is distributed around the power input shaft sleeve (1a23) along the circumferential direction, and two ends of each reinforcing rib (1a24) are respectively connected with the cavity wall of the cavity (1a22) and the outer wall of the power input shaft sleeve (1a 23).
7. The unitized wheel for a center-driven electric drive system assembly of claim 5, wherein: a circular ring-shaped flange (1a25) is formed on the disc surface on one side of the power input disc (1a2) opposite to the concave cavity (1a22) in a protruding mode, and a plurality of reinforcing lugs (1a26) are arranged on the outer peripheral surface of the flange (1a 25).
8. A unitized wheel for a center-driven electric drive system assembly according to claim 2, wherein: the wheel hub (1b) further comprises a tire mounting ring (1b2) coaxially arranged outside the wheel hub mounting ring (1b1), and the tire mounting ring (1b2) is connected with the wheel hub mounting ring (1b1) through a plurality of wheel hub connecting ribs (1b 3).
9. The unitized wheel for a center-driven electric drive system assembly of claim 8, wherein: one side surface of the hub mounting ring (1b1) for mounting the hub mounting ring (1a1) is provided with a mounting sunken platform (1b11) corresponding to the hub mounting ring (1a 1).
10. The unitized wheel for a center-driven electric drive system assembly of claim 1, wherein: the hub bracket (1a) and the hub (1b) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922490758.9U CN211730924U (en) | 2019-12-31 | 2019-12-31 | Combined wheel for central driving type electric drive system assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922490758.9U CN211730924U (en) | 2019-12-31 | 2019-12-31 | Combined wheel for central driving type electric drive system assembly |
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| Publication Number | Publication Date |
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| CN211730924U true CN211730924U (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922490758.9U Active CN211730924U (en) | 2019-12-31 | 2019-12-31 | Combined wheel for central driving type electric drive system assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920319A (en) * | 2019-12-31 | 2020-03-27 | 西南大学 | Combined wheel for central driving type electric driving system assembly |
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2019
- 2019-12-31 CN CN201922490758.9U patent/CN211730924U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920319A (en) * | 2019-12-31 | 2020-03-27 | 西南大学 | Combined wheel for central driving type electric driving system assembly |
| CN110920319B (en) * | 2019-12-31 | 2023-12-22 | 西南大学 | Combined wheel for a central drive electric drive system assembly |
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