A wheel end assembly and an engineering machine

Abstract

The utility model relates to engineering machinery technical field, concretely discloses a kind of wheel edge assembly and engineering machinery, wheel edge assembly includes sprocket box, shell and output shaft, sprocket box is equipped with sprocket mechanism, shell is fixed to one side of sprocket box, output shaft is arranged shell and is inserted into sprocket box and is connected with sprocket mechanism, bearing is equipped on output shaft, output shaft is rotatably connected with shell by bearing, shell and output shaft form lubricating space jointly, the end of shell towards sprocket box and between output shaft is provided with first plugging piece, first plugging piece is used to cut off the communication between lubricating space and sprocket box inside, shell is provided with oil hole, oil hole is detachably provided with stop piece;Engineering machinery includes the wheel edge assembly described above.The output shaft internal bearing of the wheel edge assembly can be independently lubricated without the help of lubricating oil in sprocket box, effectively reduces the lubricating oil consumption in sprocket box, ensures that sprocket box works reliably and stably.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a wheel-side assembly and engineering machinery. Background Technology

[0002] A structural reference for a wheel-side assembly in the prior art Figure 1 As shown, Figure 1 The middle wheel assembly includes components such as a sprocket box 1', a housing 2', and an output shaft 3'. The housing 2' is fixed to one side of the sprocket box 1'. The output shaft 3' passes through the housing 2' and extends into the sprocket box 1', connecting to a sprocket mechanism (not shown) inside the sprocket box 1'. The output shaft 3' is rotatably connected to the housing 2' via a bearing 31'. Specifically, Figure 1 The lubricating oil in the right-side sprocket housing 1' needs to enter the lubrication space 301' between the housing 2' and the output shaft 3' through the right-side bearing 31', thereby lubricating the output shaft 3' and all bearings 31'. However, this setup requires setting the oil level according to the height of the bearings 31', resulting in a high lubricating oil level in the sprocket housing 1'. This leads to an excessive amount of lubricating oil inside the sprocket housing 1', increasing the transmission resistance of the internal sprocket mechanism and increasing the risk of oil bubbles, thus affecting the reliability and stability of the transmission. Utility Model Content

[0003] The purpose of this utility model is to provide a wheel-side assembly in which the internal bearing of the output shaft can achieve independent lubrication without the aid of lubricating oil in the sprocket box, effectively reducing the amount of lubricating oil used in the sprocket box and ensuring reliable and stable operation of the sprocket box.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A wheel-side assembly, comprising:

[0006] A sprocket box, wherein a sprocket mechanism is provided inside the sprocket box;

[0007] The housing is fixed to one side of the sprocket box;

[0008] An output shaft extends through the housing into the sprocket box and is connected to the sprocket mechanism. A bearing is provided on the output shaft, and the output shaft is rotatably connected to the housing through the bearing.

[0009] The housing and the output shaft together form a lubrication space. A first sealing element is provided between the end of the housing facing the sprocket box and the output shaft. The first sealing element is used to cut off the communication between the lubrication space and the inside of the sprocket box. The housing has an oil injection hole communicating with the lubrication space. The oil injection hole is detachably provided with a plug.

[0010] Preferably, the housing has a pressure regulating hole communicating with the lubrication space, and a pressure regulating screw is provided on the pressure regulating hole.

[0011] Preferably, the plugging component includes a threaded screwdriver with an external thread and an internal thread corresponding to the wall of the oil injection hole, and the threaded screwdriver is threadedly connected to the oil injection hole.

[0012] Preferably, the housing is provided with a bonding plate, which is fixedly bonded to the sprocket box on the side facing the sprocket box.

[0013] Preferably, the bonding plate has an insertion part protruding from one side of the sprocket box, the sprocket box has a through hole, the output shaft passes through the through hole and extends into the sprocket box, and the insertion part is inserted into the through hole and fits against the hole wall of the through hole.

[0014] Preferably, the housing has a mounting groove at one end facing the sprocket box, the first sealing member is located in the mounting groove, the first sealing member includes a first sealing ring and a first oil seal, the first sealing ring is sleeved on the output shaft, and the first oil seal is sleeved on the first sealing ring and abuts against the groove wall of the mounting groove.

[0015] Preferably, the first sealing element further includes an O-ring, which is located between the output shaft and the first sealing ring.

[0016] Preferably, a brake mounting plate is provided at the end of the output shaft facing away from the sprocket box, and a sealing gap is formed between the brake mounting plate and the housing, and a second sealing element is provided in the sealing gap.

[0017] Preferably, multiple bearings are provided at intervals along the axial direction of the output shaft.

[0018] This utility model also provides an engineering machine, including the above-mentioned wheel-side assembly, in which the internal bearing of the output shaft can achieve independent lubrication without the aid of lubricating oil in the sprocket box, effectively reducing the amount of lubricating oil used in the sprocket box.

[0019] An engineering machine includes the wheel-side assembly described in any one of the above claims, and also includes a chassis, wherein the wheel-side assembly is disposed on the chassis.

[0020] Beneficial effects:

[0021] The wheel assembly provided by this utility model has a lubrication space formed by the housing and the output shaft. A first sealing element is provided between the end of the housing facing the sprocket box and the output shaft. The first sealing element is used to cut off the communication between the lubrication space and the inside of the sprocket box, preventing the lubricating oil inside the sprocket box from flowing into the lubrication space, thus making the lubrication space independently set. With this configuration, when it is necessary to lubricate the bearing in the output shaft, the sealing element can be removed to open the oil injection hole, and lubricating oil can be injected into the lubrication space through the oil injection hole to ensure the lubrication of the bearing, without relying on the lubricating oil in the sprocket box. This achieves independent lubrication of the bearing in the output shaft and also significantly reduces the amount of lubricating oil used in the sprocket box. The lubricating oil level in the sprocket box is maintained within an appropriate range, effectively reducing the transmission resistance of the internal sprocket mechanism, reducing the risk of oil bubbles, and improving the reliability and stability of the transmission.

[0022] The engineering machinery provided by this utility model includes the aforementioned wheel-side assembly. The internal bearing of the output shaft can achieve independent lubrication without the aid of lubricating oil in the sprocket box, effectively reducing the amount of lubricating oil used in the sprocket box and improving the reliability and stability of the transmission operation. Attached Figure Description

[0023] Figure 1 This is a partial structural diagram of a wheel-side assembly in the prior art;

[0024] Figure 2 This is a partial structural diagram of the wheel assembly provided in this embodiment.

[0025] In the picture:

[0026] 1', Sprocket box; 2', Housing; 3', Output shaft; 301', Lubrication space; 31', Bearing;

[0027] 1. Sprocket box; 11. Perforation;

[0028] 2. Housing; 21. Oil filling hole; 22. Plug; 23. Pressure adjusting hole; 24. Pressure adjusting screw; 25. Adhesive plate; 251. Insertion part; 26. Mounting groove;

[0029] 3. Output shaft; 301. Lubrication space; 31. Bearing;

[0030] 41. First sealing element; 411. First sealing ring; 412. First oil seal; 413. O-ring; 42. Second sealing element;

[0031] 5. Brake mounting plate; 501. Sealing gap. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] This embodiment provides a wheel-side assembly. (Refer to...) Figure 2As shown, the wheel assembly includes a sprocket housing 1, a housing 2, and an output shaft 3. The sprocket housing 1 houses a sprocket mechanism; the housing 2 is fixed to one side of the sprocket housing 1; the output shaft 3 passes through the housing 2, extends into the sprocket housing 1, and connects to the sprocket mechanism; a bearing 31 is mounted on the output shaft 3, and the output shaft 3 is rotatably connected to the housing 2 via the bearing 31; the housing 2 and the output shaft 3 together form a lubrication space 301; a first sealing element 41 is provided between the end of the housing 2 facing the sprocket housing 1 and the output shaft 3, the first sealing element 41 being used to cut off the communication between the lubrication space 301 and the interior of the sprocket housing 1; the housing 2 has an oil injection hole 21, and a plug 22 is detachably mounted on the oil injection hole 21.

[0037] In this embodiment, the housing 2 and the output shaft 3 together form a lubrication space 301. A first sealing member 41 is provided between the end of the housing 2 facing the sprocket box 1 and the output shaft 3. The first sealing member 41 is used to cut off the communication between the lubrication space 301 and the interior of the sprocket box 1, preventing the lubricating oil inside the sprocket box 1 from communicating with the lubricating oil inside the lubrication space 301, that is, the lubrication space 301 is set independently. With this configuration, when it is necessary to lubricate the bearing 31 inside the output shaft 3, the sealing member can be removed to open the oil injection hole 21, and lubricating oil can be injected into the lubrication space 301 through the oil injection hole 21 to ensure the lubrication of the bearing 31, without relying on the lubricating oil in the sprocket box 1, thus achieving independent lubrication of the bearing 31 inside the output shaft 3, and also significantly reducing the amount of lubricating oil used in the sprocket box 1. The lubricating oil level in the sprocket box 1 is maintained within an appropriate range, effectively reducing the transmission resistance of the internal sprocket mechanism, reducing the risk of oil bubbles, and improving the reliability and stability of the transmission.

[0038] In this embodiment, the housing 2 is provided with a pressure regulating hole 23, and a pressure regulating screw 24 is provided on the pressure regulating hole 23. Specifically, the pressure regulating screw 24 is used to adjust the opening of the pressure regulating hole 23, thereby adjusting the pressure in the lubrication space 301 in real time and avoiding excessive pressure in the lubrication space 301.

[0039] In this embodiment, the plugging component 22 includes a threaded screwdriver with an external thread, and the wall of the oil filling hole 21 has a corresponding internal thread. The threaded screwdriver is threadedly connected to the oil filling hole 21. Specifically, the external thread of the threaded screwdriver is threadedly connected to the internal thread of the wall of the oil filling hole 21. By screwing the threaded screwdriver, the threaded screwdriver can be tightened or loosened in the oil filling hole 21, thereby realizing the installation and removal of the threaded screwdriver, which is convenient to operate.

[0040] In this embodiment, the housing 2 is provided with a bonding plate 25, which is fixedly bonded to the sprocket box 1 on the side facing the sprocket box 1. Exemplarily, the bonding plate 25 of the housing 2 can be fixedly connected to the corresponding side of the sprocket box 1 by bolts.

[0041] In this embodiment, the bonding plate 25 has an insertion part 251 protruding from the side facing the sprocket box 1. The sprocket box 1 has a through hole 11, through which the output shaft 3 extends into the sprocket box 1. The insertion part 251 is inserted into the through hole 11 and fits against the wall of the through hole 11. Specifically, the insertion and engagement between the insertion part 251 and the through hole 11 can, on the one hand, position the installation between the housing 2 and the sprocket box 1, and on the other hand, further ensure a tight fit between the insertion part 251 and the through hole 11, avoiding oil leakage gaps.

[0042] In this embodiment, a mounting groove 26 is provided at the end of the housing 2 facing the sprocket box 1. A first sealing member 41 is located in the mounting groove 26. The first sealing member 41 includes a first sealing ring 411 and a first oil seal 412. The first sealing ring 411 is sleeved on the output shaft 3, and the first oil seal 412 is sleeved on the first sealing ring 411 and abuts against the groove wall of the mounting groove 26. Specifically, one side of the mounting groove 26 communicates with the lubrication space 301, and the other side communicates with the inside of the sprocket box 1. Through the cooperation of the first sealing ring 411 and the first oil seal 412, the mounting groove 26 can be reliably and effectively sealed, blocking the flow of lubricating oil between the lubrication space 301 and the internal space of the gearbox, ensuring the sealing of the lubrication space 301.

[0043] Furthermore, the first sealing element 41 also includes an O-ring 413, which is located between the output shaft 3 and the first sealing ring 411. Specifically, the first sealing element 41 is further provided with an O-ring 413, which is sleeved on the output shaft 3, and the first sealing ring 411 is sleeved on the O-ring 413. The O-ring 413 can further seal any gap that may exist between the first sealing ring 411 and the output shaft 3, and further prevent lubricating oil from flowing through the gap between the first sealing ring 411 and the output shaft 3.

[0044] In this embodiment, a brake mounting plate 5 is provided at the end of the output shaft 3 facing away from the sprocket box 1. A sealing gap 501 is formed between the brake mounting plate 5 and the housing 2, and a second sealing element 42 is provided within the sealing gap 501. Specifically, by providing the second sealing element 42 within the sealing gap 501, the gap between the brake mounting plate 5 and the housing 2 can be further sealed, thereby further ensuring the reliable and effective sealing performance of the lubrication space 301 and preventing lubricating oil leakage.

[0045] For example, the second sealing element 42 can be configured as a second oil seal. The specific structures of the first oil seal 412 and the second oil seal are prior art and will not be described in detail here.

[0046] In this embodiment, multiple bearings 31 are spaced apart along the axial direction of the output shaft 3. Specifically, two bearings 31 are provided in this embodiment, one bearing 31 is located near the mounting groove 26, and the other bearing 31 is located near the sealing gap 501. The space between the two bearings 31 is the main space of the lubrication gap, which can effectively accommodate lubricating oil. During the flow of lubricating oil, it can flow between the inner and outer rings of the bearing 31, thereby achieving effective lubrication of the bearing 31.

[0047] This embodiment also provides an engineering machinery. The engineering machinery includes the aforementioned wheel-side assembly and a chassis, with the wheel-side assembly mounted on the chassis. In this embodiment, the engineering machinery includes the aforementioned wheel-side assembly, thus achieving the beneficial effects of the aforementioned wheel-side assembly. That is, the lubrication of the output shaft 3 and the bearing 31 no longer requires the lubricating oil in the sprocket box 1, achieving independent lubrication of the bearing 31 within the output shaft 3, and significantly reducing the amount of lubricating oil used in the sprocket box 1. The lubricating oil level in the sprocket box 1 is maintained within an appropriate range, effectively reducing the transmission resistance of the internal sprocket mechanism, reducing the risk of oil bubbles, and improving the reliability and stability of the transmission.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A wheel-side assembly, characterized in that, include: A sprocket box (1) is provided with a sprocket mechanism inside the sprocket box (1); The housing (2) is fixed to one side of the sprocket box (1); Output shaft (3), the output shaft (3) passes through the housing (2) and extends into the sprocket box (1) and is connected to the sprocket mechanism. The output shaft (3) is provided with a bearing (31). The output shaft (3) is rotatably connected to the housing (2) through the bearing (31). The housing (2) and the output shaft (3) together form a lubrication space (301). A first sealing member (41) is provided between the end of the housing (2) facing the sprocket box (1) and the output shaft (3). The first sealing member (41) is used to cut off the communication between the lubrication space (301) and the interior of the sprocket box (1). The housing (2) is provided with an oil injection hole (21) communicating with the lubrication space (301). The oil injection hole (21) is detachably provided with a plug (22).

2. The wheel-side assembly according to claim 1, characterized in that, The housing (2) has a pressure regulating hole (23) connected to the lubrication space (301), and a pressure regulating screw (24) is provided on the pressure regulating hole (23).

3. The wheel-side assembly according to claim 1, characterized in that, The plug (22) includes a threaded screw head with an external thread and an internal thread on the wall of the oil injection hole (21). The threaded screw head is threadedly connected to the oil injection hole (21).

4. The wheel-side assembly according to claim 1, characterized in that, The housing (2) is provided with a bonding plate (25), and the bonding plate (25) is fixedly bonded to the sprocket box (1) on the side facing the sprocket box (1).

5. The wheel-side assembly according to claim 4, characterized in that, The bonding plate (25) has an insertion part (251) protruding from the side facing the sprocket box (1). The sprocket box (1) has a through hole (11). The output shaft (3) passes through the through hole (11) and extends into the sprocket box (1). The insertion part (251) is inserted into the through hole (11) and fits against the hole wall of the through hole (11).

6. The wheel-side assembly according to claim 1, characterized in that, The housing (2) has an installation groove (26) at one end facing the sprocket box (1). The first sealing member (41) is located in the installation groove (26). The first sealing member (41) includes a first sealing ring (411) and a first oil seal (412). The first sealing ring (411) is sleeved on the output shaft (3), and the first oil seal (412) is sleeved on the first sealing ring (411) and abuts against the groove wall of the installation groove (26).

7. The wheel-side assembly according to claim 6, characterized in that, The first sealing element (41) also includes an O-ring (413), which is located between the output shaft (3) and the first sealing ring (411).

8. The wheel-side assembly according to claim 1, characterized in that, The output shaft (3) is provided with a brake mounting plate (5) at one end facing away from the sprocket box (1). A sealing gap (501) is formed between the brake mounting plate (5) and the housing (2). A second sealing element (42) is provided in the sealing gap (501).

9. The wheel-side assembly according to claim 1, characterized in that, The bearings (31) are arranged in multiple intervals along the axial direction of the output shaft (3).

10. An engineering machinery, characterized in that, The system includes the wheel assembly as described in any one of claims 1-9, and also includes a chassis, wherein the wheel assembly is disposed on the chassis.

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