CN215751725U - Wheel edge speed reduction drive axle and vehicle - Google Patents
Wheel edge speed reduction drive axle and vehicle Download PDFInfo
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- CN215751725U CN215751725U CN202122023306.7U CN202122023306U CN215751725U CN 215751725 U CN215751725 U CN 215751725U CN 202122023306 U CN202122023306 U CN 202122023306U CN 215751725 U CN215751725 U CN 215751725U
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- hub
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- reduction gear
- hub reduction
- drive axle
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Abstract
The utility model belongs to the field of vehicles and discloses a hub reduction drive axle and a vehicle, wherein the hub reduction drive axle comprises a hub reduction gear, the hub reduction drive axle comprises a hub reduction gear shell and a planetary reduction unit arranged in the hub reduction gear shell, the hub reduction gear shell comprises a shell body with openings at two ends and an end cover for plugging the opening at one end of the shell body, and the shell body and the end cover are of an integrated structure; and the brake drum is arranged in the hub reduction gear shell and is fixedly connected to the hub reduction gear shell. According to the utility model, the shell body and the end cover of the hub reduction gear shell are of an integrated structure, so that the structural strength of the whole hub reduction gear shell is improved, the cracking probability of the hub reduction gear shell is reduced, and the problem that the oil leakage is easily caused on the combined surface of the shell body and the end cover when the shell body and the end cover are arranged in a split mode is avoided. The brake drum is arranged in the hub reduction gear shell, a shell does not need to be arranged for the brake drum independently, and oil leakage at the joint surface of the shell of the brake drum and the hub reduction gear shell when the shell is arranged for the brake drum independently is avoided.
Description
Technical Field
The utility model belongs to the field of vehicles, and particularly relates to a hub reduction drive axle and a vehicle.
Background
Medium and heavy commercial vehicles equipped with a hub reduction drive axle are widely used in engineering construction and logistics transportation. The hub reduction drive axle comprises a hub reduction gear and a brake drum, the hub reduction gear shell comprises an end cover and a shell body, one end of the shell body is fixed with the end cover through a bolt, and the other end of the shell body is fixed with the shell of the brake drum through a bolt.
The wheel edge speed reduction drive axle has the following technical problems: (1) because commercial vehicle loading capacity is big, needs great moment during the braking, great moment and impact load can be born to wheel reduction gear during operation inside, and the radial arrangement space of wheel reduction gear shell still is limited by rim hole and ring gear external diameter moreover, leads to the very easy problem of ftractureing that takes place of wheel reduction gear shell. (2) The wheel side speed reducer shell and the shell of the brake drum are combined, and the shell body of the wheel side speed reducer shell and the end cover are combined, so that the problem of oil leakage of the combined surface is caused due to the fact that the combined surface is large in area and is in slip deformation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a hub reduction drive axle and a vehicle, which can reduce the probability of cracking of a hub reduction gear shell and solve the problem of oil leakage existing on the joint surface of the hub reduction gear shell and a brake drum shell and the joint surface of a hub reduction gear shell body and an end cover.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a hub reduction drive axle, comprising:
the hub reduction gear comprises a hub reduction gear shell and a planetary reduction unit arranged in the hub reduction gear shell, wherein the hub reduction gear shell comprises a shell body with openings at two ends and an end cover for plugging the opening at one end of the shell body, and the shell body and the end cover are of an integral structure;
the brake drum is arranged in the hub reduction gear shell and fixedly connected to the hub reduction gear shell.
As a preferable technical solution of the above-mentioned wheel-side reduction drive axle, the wheel-side reduction drive axle further includes:
the backing plate, the backing plate is located in the hub reduction gear shell and fixed connection in the end cover, the backing plate with the planet carrier fixed connection of the planet reduction unit of hub reduction gear.
As a preferable technical solution of the above-mentioned wheel-side reduction drive axle, the wheel-side reduction drive axle further includes:
the rim is sleeved outside the shell body;
the hub is fixedly arranged in the hub reduction gear shell;
the transition flange is sleeved outside the shell body and located between the hub and the rim, the rim is connected to the shell body through the transition flange, and the transition flange is used for adjusting the axial distance between the hub and the rim.
As a preferable technical solution of the above wheel-side reduction drive axle, the housing body includes a small-diameter cylinder and a large-diameter cylinder having different outer diameters, and the small-diameter cylinder and the large-diameter cylinder are connected by a step plate;
the transition flange and the hub are respectively tightly attached to two opposite side faces of the step plate, and the transition flange and the rim sequentially penetrate through the hub, the step plate, the transition flange and the rim through first bolts and are connected to nuts.
As a preferable technical solution of the above hub reduction drive axle, a seal ring is provided between the hub and the inner wall of the small-diameter cylinder.
As a preferable technical solution of the above-mentioned hub reduction drive axle, the brake drum is detachably connected to the hub reduction gear case.
As a preferable technical solution of the above wheel-side reduction drive axle, the brake drum is disposed in the large-diameter cylinder, and the brake drum is connected to the step plate by a plurality of second bolts circumferentially arranged.
As a preferable technical solution of the above hub reduction drive axle, a first oil hole is formed in the top of the housing body, and a second oil hole communicated with an oil hole of the first oil hole is formed in the hub.
As a preferable technical solution of the above-mentioned wheel-side reduction drive axle, the wheel-side reduction drive axle further includes:
the oil drain plug is arranged on the end cover and communicated with an inner cavity of the hub reduction gear shell, the oil drain hole is formed in the lowest position of the end cover, and the oil drain plug penetrates through the oil drain hole and is connected to the backing plate.
The utility model also provides a vehicle which comprises the wheel-side deceleration drive axle in any scheme.
The utility model has the beneficial effects that: according to the hub reduction axle provided by the utility model, the shell body and the end cover of the hub reduction gear shell are of an integrated structure, so that the structural strength of the whole hub reduction gear shell is improved, the probability of cracking of the hub reduction gear shell is reduced, and the problem that the oil is easily leaked from the joint surface of the shell body and the end cover when the shell body and the end cover are arranged in a split manner is avoided.
The brake drum is arranged in the hub reduction gear shell, a shell does not need to be arranged for the brake drum independently, and oil leakage at the joint surface of the shell of the brake drum and the hub reduction gear shell when the shell is arranged for the brake drum independently is avoided.
The utility model also provides a vehicle which comprises the wheel-side speed reduction drive axle, the wheel-side speed reducer and the brake drum share one shell, the structural strength of the shell of the wheel-side speed reducer is effectively ensured, and the reliability of the wheel-side speed reduction drive axle is improved; the wheel reduction drive axle reduces the probability of cracking and oil leakage of the wheel reduction shell and reduces the weight of the wheel reduction drive axle.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a partial cross-sectional view of a wheel-side reduction drive axle provided by an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a hub reduction gear housing provided in an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a shim plate provided in accordance with an embodiment of the present invention;
fig. 4 is a cross-sectional view of a transition flange provided by an embodiment of the present invention.
In the figure:
111. a hub reduction gear case; 1111. a fourth mounting hole; 1112. a first oil hole; 1113. a second mounting hole; 1114. a small diameter cylinder; 1115. an oil drain hole; 1116. a large diameter cylinder; 1117. a step plate; 112. a brake drum; 113. a second bolt;
12. a first bolt; 13. a transition flange; 131. a fifth mounting hole;
14. a planet carrier;
15. a base plate; 151. a first mounting hole; 152. a second threaded hole; 153. a third mounting hole;
16. a third bolt; 17. an oil drain plug screw; 18. a hub; 19. a seal ring; 20. a friction plate; 21. a rim; 22. a nut; 23. and a planet wheel shaft.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
The embodiment provides a hub reduction drive axle to solve the fracture problem of hub reduction gear shell, and the oil leak problem that exists in the faying face of the shell of hub reduction gear shell and brake drum and the faying face of the shell body of hub reduction gear shell and end cover.
As shown in fig. 1 and 2, the wheel reduction drive axle includes a wheel reduction gear, the wheel reduction gear includes a wheel reduction gear case 111, the wheel reduction gear case 111 includes a case body with openings at two ends and an end cover for opening at one end of the case body, and the case body and the end cover are of an integral structure formed by stamping. In the embodiment, the shell body and the end cover of the hub reduction gear shell 111 are of an integrated structure, so that the structural strength of the whole hub reduction gear shell 111 is improved, the cracking probability of the hub reduction gear shell 111 is reduced, and the problem that the oil leakage is easily caused on the joint surface of the shell body and the end cover when the shell body and the end cover are arranged in a split mode is solved.
In this embodiment, the hub reduction gear case 111 is formed by stamping a steel plate, so that the strength of the hub reduction gear case 111 is improved.
Further, the hub reduction gear also comprises a planetary reduction unit arranged in the hub reduction gear shell 111, and because the hub reduction gear shell 111 formed by stamping a steel plate is thinner, and the end cover is not enough to support the planetary reduction unit, as shown in fig. 3, a backing plate 15 is arranged in the hub reduction gear shell 111, the backing plate 15 is fixedly connected to the end cover, and the backing plate 15 is fixedly connected with a planet carrier 14 of the planetary reduction unit.
Specifically, be equipped with the first mounting hole 151 that circumference distributes on the backing plate 15, be equipped with the second mounting hole 1113 with first mounting hole 151 one-to-one on the end cover, be equipped with the first screw hole with first mounting hole 151 one-to-one on planet carrier 14, pass second mounting hole 1113, first mounting hole 151 and threaded connection in first screw hole in proper order through third bolt 16 to pass through backing plate 15 fixed connection in hub reduction gear shell 111 with planet carrier 14, realize supporting planet carrier 14 through backing plate 15.
With continued reference to fig. 3, the backing plate 15 is provided with a third mounting hole 153, and one end of the planetary gear shaft 23 of the planetary reduction unit is disposed in the third mounting hole 153 to support the planetary gear shaft 23 by the backing plate 15.
Further, referring to fig. 1 again, the hub reduction drive axle further includes a hub 18, a rim 21 and a transition flange 13, wherein the hub 18 is fixedly disposed in the hub reduction gear casing 111, the rim 21 is sleeved outside the casing body, the transition flange 13 is sleeved outside the casing body and is located between the hub 18 and the rim 21, and the rim 21 is connected to the casing body through the transition flange 13.
Specifically, as shown in fig. 1, 2 and 4, the housing body includes a small-diameter cylinder 1114 and a large-diameter cylinder 1116 having different outer diameters, and the small-diameter cylinder 1114 and the large-diameter cylinder 1116 are connected by a step plate 1117; the transition flange 13 and the hub 18 are respectively closely attached to two opposite side surfaces of the step plate 1117, and are sequentially connected to the nut 22 through a first bolt 12 passing through a mounting hole in the hub 18, a fourth mounting hole 1111 in the case body, a fifth mounting hole 131 in the transition flange 13 and a mounting hole in the rim 21.
Make wheel hub 18, step board 1117, transition flange 13 and rim 21 can dismantle the connection through first bolt 12 to realize that transition flange 13 can dismantle, can adjust the axial installation distance between rim 21 and the wheel hub 18 through the transition flange 13 of changing different thickness, and then reach the purpose of adjustment wheel base.
In other embodiments, the hub 18 may be fixedly connected to the step plate 1117 by a plurality of circumferentially distributed first bolts, the transition flange 13 and the rim 21 are fixedly connected to the step plate 1117 by a plurality of circumferentially distributed second bolts, and the rim 21 and the hub 18 are respectively and fixedly connected to the step plate 1117 by different bolts. In order to adjust the wheel track, only the second bolt needs to be detached, but the coaxiality of the rim 21 and the hub 18 needs to be ensured by adopting the mode.
Above-mentioned first bolt 12 is equipped with a plurality ofly, and a plurality of first bolts 12 distribute along transition flange 13's circumference in proper order to realize fixed connection between transition flange 13, rim 21 and the wheel hub 18, improve the stability of connecting.
Further, as shown in fig. 1 and 2, in order to facilitate adding lubricating oil to the hub 18, the top of the housing body is provided with a first oil hole 1112, and the hub 18 is provided with a second oil hole communicating with an oil port of the first oil hole 1112. Lubricating oil is introduced into the second oil hole through the first oil hole 1112 to lubricate the hub 18. Specifically, the first oil hole 1112 is provided at a connecting position of the step plate 1117 and the small-diameter cylinder 1114, and the first oil hole 1112 is located at the top of the small-diameter cylinder 1114 to prevent oil leakage.
Further, since a part of the lubricating oil is present in the gap between the hub 18 and the small-diameter cylinder 1114 when the lubricating oil is added through the first oil hole 1112, in order to ensure that the lubricating oil in the hub reduction drive axle flows in a predetermined flow direction, the seal ring 19 is provided between the hub 18 and the inner wall of the small-diameter cylinder 1114, so that the lubricating oil first enters the hub 18 and then enters the inner cavity of the hub reduction gear case 111 through the hub 18. It should be noted that the sealing ring 19 may be, but is not limited to, an O-ring.
Furthermore, in order to realize the replacement of the lubricating oil in the inner cavity of the hub reduction gear shell 111, the hub reduction drive axle further comprises an oil drain plug 17, an end cover is provided with an oil drain hole 1115 communicated with the inner cavity of the hub reduction gear shell 111, and the oil drain hole 1115 is arranged at the lowest position of the end cover, so that the lubricating oil in the inner cavity of the hub reduction gear shell 111 can automatically flow out after the oil drain plug 17 is removed; the oil drain plug 17 passes through the oil drain hole 1115 and is screwed into the second threaded hole 152 of the backing plate 15 for fixation, so that the oil drain plug 17 can be conveniently assembled and disassembled.
Furthermore, the wheel-side reduction drive axle further comprises a brake drum 112 arranged in the wheel-side reducer shell 111, the brake drum 112 is fixedly connected to the wheel-side reducer shell 111, the wheel-side reducer and the brake drum 112 share one shell, a shell does not need to be separately configured for the brake drum 112, oil leakage on a joint surface of the shell of the brake drum 112 and the wheel-side reducer shell 111 when the shell is separately configured for the brake drum 112 is avoided, the structural strength of the integral shell is high, and the reliability of the wheel-side reduction drive axle is improved; the probability of cracking and the probability of oil leakage of the hub reduction gear shell 111 are reduced, and the weight of the hub reduction drive axle is reduced.
The hub reduction gear shell 111 is provided with a friction plate 20 for cooperating with a brake drum 112 to realize braking. Since the brake drum 112 and the friction plate 20 are braked by friction, the brake drum 112 is worn after a long time use, and the brake drum 112 is detachably connected to the hub reduction gear case 111 in order to facilitate replacement of the brake drum 112. Specifically, the brake drum 112 is provided in the large-diameter cylinder 1116, and the brake drum 112 is connected to the step plate 1117 by a plurality of second bolts 113 distributed circumferentially.
It should be further noted that, not only can the track width be adjusted by replacing the transition flange 13, but also the arrangement of the transition flange 13 can avoid the interference of the first bolt 12 and the second bolt 113.
The embodiment also provides a vehicle comprising the wheel-side deceleration drive axle.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (10)
1. A hub reduction transaxle, comprising:
the hub reduction gear comprises a hub reduction gear shell (111), the hub reduction gear shell (111) comprises a shell body with openings at two ends and an end cover for plugging the opening at one end of the shell body, and the shell body and the end cover are of an integrated structure;
and the brake drum (112), the brake drum (112) is arranged in the hub reduction gear shell (111), and the brake drum (112) is fixedly connected to the hub reduction gear shell (111).
2. The hub reduction drive axle according to claim 1, further comprising:
backing plate (15), backing plate (15) are located in wheel reduction gear shell (111) and fixed connection in the end cover, backing plate (15) with planet carrier (14) fixed connection of wheel reduction gear's planetary reduction unit.
3. The hub reduction drive axle according to claim 1, further comprising:
a rim (21) sleeved outside the shell body;
a hub (18) fixed in the hub reduction gear case (111);
the transition flange (13) is sleeved outside the shell body and located between the hub (18) and the rim (21), the rim (21) is connected to the shell body through the transition flange (13), and the transition flange (13) is used for adjusting the axial distance between the hub (18) and the rim (21).
4. The hub reduction drive axle according to claim 3, wherein the housing body includes a small diameter cylinder (1114) and a large diameter cylinder (1116) having different outer diameters, the small diameter cylinder (1114) and the large diameter cylinder (1116) being connected by a step plate (1117);
the transition flange (13) and the hub (18) are respectively tightly attached to two opposite side faces of the step plate (1117), and the transition flange (13) and the rim (21) sequentially penetrate through the hub (18), the step plate (1117), the transition flange and the rim (21) through first bolts (12) and are connected to nuts (22).
5. A hub reduction drive axle according to claim 4, wherein a sealing ring (19) is provided between the hub (18) and the inner wall of the small diameter tube (1114).
6. Hub reduction drive axle according to claim 4, wherein the brake drum (112) is detachably connected to the hub reduction gear housing (111).
7. The hub reduction drive axle according to claim 6, wherein the brake drum (112) is provided in the large diameter tube (1116), and the brake drum (112) is connected to the step plate (1117) by a plurality of second bolts (113) arranged circumferentially.
8. The hub reduction transaxle of claim 3 wherein the top of the housing body defines a first oil hole (1112), and the hub (18) defines a second oil hole in communication with the first oil hole (1112).
9. The hub reduction drive axle according to claim 2, further comprising:
the oil drain structure comprises an oil drain plug (17), wherein an oil drain hole (1115) communicated with an inner cavity of the hub reduction gear shell (111) is formed in the end cover, the oil drain hole (1115) is formed in the lowest position of the end cover, and the oil drain plug (17) penetrates through the oil drain hole (1115) and is connected with the backing plate (15).
10. A vehicle characterized by comprising the wheel-side reduction transaxle of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122023306.7U CN215751725U (en) | 2021-08-26 | 2021-08-26 | Wheel edge speed reduction drive axle and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122023306.7U CN215751725U (en) | 2021-08-26 | 2021-08-26 | Wheel edge speed reduction drive axle and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215751725U true CN215751725U (en) | 2022-02-08 |
Family
ID=80078803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122023306.7U Active CN215751725U (en) | 2021-08-26 | 2021-08-26 | Wheel edge speed reduction drive axle and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215751725U (en) |
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2021
- 2021-08-26 CN CN202122023306.7U patent/CN215751725U/en active Active
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