Wheel edge assembly and grader

Abstract

The present invention relates to the technical field of engineering machinery, and more specifically, to a wheel edge assembly and a motor grader. A wheel edge assembly comprises a sprocket box, a lubricating oil cavity and an oil collecting box; the oil collecting box is arranged in the sprocket box, and is used to collect oil splashed by the rotation of the sprocket in the sprocket box. The oil collecting box is connected to the lubricating oil cavity, and the oil in the oil collecting box flows from the oil inlet passage of the connecting plate to the lubricating oil cavity under the action of gravity, so as to lubricate the parts to be lubricated in the lubricating oil cavity. The wheel edge assembly can ensure the lubrication effect of the bearing in the inner cavity, thereby avoiding the situation where the service life of the bearing is affected by poor lubrication.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a wheel edge assembly and a motor grader. Background Art

[0002] The existing lubrication method for the rear axle wheel side bearing of the grader has the following problems:

[0003] Insufficient lubricating oil in the bearing raceway leads to poor lubrication and shortens the service life of the bearing. Summary of the invention

[0004] The objects of the present invention include, for example, providing a wheel rim assembly and a motor grader, which can ensure that the splashed gear oil in the sprocket box can flow into the bearing mounting inner cavity of the wheel rim in sufficient quantity, thereby ensuring the lubrication effect of the bearing in the inner cavity, and thus avoiding the situation in which the service life of the bearing is affected by poor lubrication.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In the first aspect, an embodiment of the present invention provides a wheel rim assembly, including a sprocket box, a lubricating oil chamber and an oil collecting box; the oil collecting box is arranged in the sprocket box, and the oil collecting box is used to collect oil splashed by the rotation of the sprocket in the sprocket box. The oil collecting box is connected to the lubricating oil chamber, and the oil in the oil collecting box flows into the lubricating oil chamber under the action of gravity to lubricate the parts to be lubricated in the lubricating oil chamber.

[0007] In an optional embodiment, the wheel rim assembly further includes a connecting plate, a wheel axle and two bearings, and a portion of the wheel axle located in the connecting plate is rotatably connected to the connecting plate through the two bearings;

[0008] The outer wall of the wheel axle located between the two bearings and the inner wall of the connecting plate together form a lubricating oil chamber; an oil inlet channel is provided at one end of the connecting plate connected to the sprocket box, and the two ends of the oil inlet channel are respectively connected to the oil collecting box and the lubricating oil chamber, and the oil in the oil collecting box flows from the oil inlet channel to the lubricating oil chamber under the action of gravity to lubricate the two bearings.

[0009] In an optional embodiment, the connecting plate is provided with at least one oil return channel, and both ends of the at least one oil return channel are respectively connected to the lubricating oil chamber and the sprocket box, and the oil in the lubricating oil chamber flows from the at least one oil return channel to the sprocket box under the action of gravity.

[0010] In an optional embodiment, along the gravity direction, the height of one end of at least one oil return passage communicating with the lubricating oil chamber is greater than the minimum height of the mating surfaces of the two bearings and the connecting plate.

[0011] In an optional embodiment, the oil collecting box is connected to the sprocket box or the connecting plate.

[0012] In an optional embodiment, the oil collecting box is integrally formed with the sprocket box.

[0013] In an optional embodiment, an oil guide hole is provided at the bottom of the oil collecting box, and one end of the oil inlet passage located in the sprocket box is located below the oil guide hole.

[0014] In an optional embodiment, the wheel rim assembly further includes two oil seals disposed in the connecting plate, and the two oil seals are respectively disposed at one end of the two bearings away from the lubricating oil chamber.

[0015] In an optional embodiment, the wheel rim assembly further includes a disc brake structure or a drum brake structure disposed at one end of the wheel axle away from the sprocket box.

[0016] In a second aspect, an embodiment of the present invention provides a motor grader, and the motor grader includes the above-mentioned wheel side assembly.

[0017] The beneficial effects of the embodiments of the present invention include:

[0018] The wheel assembly includes a sprocket box, a connecting plate, a wheel axle, an oil collecting box and two bearings. The part of the wheel axle located in the connecting plate is rotatably connected to the connecting plate through two bearings; the outer wall of the wheel axle located between the two bearings and the inner wall of the connecting plate jointly form a lubricating oil chamber. The oil collecting box is arranged in the sprocket box, and an oil inlet passage is arranged at one end where the connecting plate is connected to the sprocket box, and the two ends of the oil inlet passage are respectively connected to the oil collecting box and the lubricating oil chamber.

[0019] When the sprocket in the sprocket box rotates, the lubricating oil in the sprocket box will splash. At this time, the oil splashed by the rotation of the sprocket will enter the oil collecting box. Under the collection effect of the oil collecting box, a sufficient amount of oil can be quickly collected. Under the action of gravity, the oil in the oil collecting box will flow from the oil inlet channel to the lubricating oil chamber to lubricate the two bearings.

[0020] Therefore, through the collection function of the oil collecting box, the lubricating oil can be supplied to the lubricating oil chamber quickly and in sufficient quantities, thereby ensuring that the two bearings in the lubricating oil chamber can obtain sufficient lubricating oil, thereby ensuring the lubrication effect of the two bearings, and thus avoiding abnormal wear of the two bearings due to poor lubrication effect, thereby causing failure of the wheel rim assembly or affecting the life of the wheel rim assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of a wheel edge assembly in an embodiment of the present invention;

[0023] Figure 2 A partial cross-sectional view of a wheel rim assembly according to an embodiment of the present invention;

[0024] Figure 3 It is a structural schematic diagram of a wheel edge assembly in other embodiments of the present invention;

[0025] Figure 4 It is a schematic structural diagram of the wheel rim assembly in other embodiments of the present invention.

[0026] Icons: 200-wheel rim assembly; 210-sprocket box; 211-sprocket; 220-connecting plate; 221-oil inlet channel; 222-oil return channel; 230-wheel axle; 240-oil collecting box; 250-bearing; 260-lubricating oil chamber; 270-oil seal; 290-drum brake structure; 241-oil guide hole; 280-disc brake structure. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0032] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0033] Please refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 The structure of the wheel rim assembly in an embodiment of the present invention is shown; this embodiment provides a wheel rim assembly 200, including an oil collecting box 240, a lubricating oil chamber 260 and a sprocket box 210, and the oil collecting box 240 is arranged in the sprocket box 210.

[0034] The oil collecting box 240 is used to collect the oil splashed by the rotation of the sprocket 211 in the sprocket box 210. The oil in the oil collecting box 240 flows from the oil inlet channel 221 to the lubricating oil chamber 260 under the action of gravity to lubricate the parts to be lubricated in the lubricating oil chamber 260.

[0035] The working principle of the wheel edge assembly 200 is:

[0036] The wheel edge assembly 200 includes a sprocket box 210, an oil collecting box 240 and a lubricating oil chamber 260. When the sprocket 211 in the sprocket box 210 rotates, the lubricating oil in the sprocket box 210 will be splashed, and the oil splashed by the rotation of the sprocket 211 will enter the oil collecting box 240. Under the collection effect of the oil collecting box 240, a sufficient amount of oil can be quickly collected, and the oil in the oil collecting box 240 will flow into the lubricating oil chamber 260 under the effect of gravity to lubricate the parts to be lubricated in the lubricating oil chamber 260.

[0037] Therefore, through the collection function of the oil collecting box 240, the lubricating oil liquid can be supplied to the lubricating oil chamber 260 quickly and in sufficient quantity, thereby ensuring that the bearing 250 in the lubricating oil chamber 260 can obtain sufficient lubricating oil liquid, thereby ensuring the lubrication effect of the bearing 250, and further avoiding abnormal wear of the bearing 250 due to poor lubrication effect, thereby causing failure of the wheel rim assembly 200 or affecting the life of the wheel rim assembly 200.

[0038] Furthermore, the wheel rim assembly 200 also includes a connecting plate 220, a wheel axle 230 and two bearings 250. The part of the wheel axle 230 located inside the connecting plate 220 is rotatably connected to the connecting plate 220 through two bearings 250; the outer wall of the wheel axle 230 located between the two bearings 250 and the inner wall of the connecting plate 220 together form a lubricating oil chamber 260. An oil inlet passage 221 is provided at one end of the connecting plate 220 connected to the sprocket box 210, and the two ends of the oil inlet passage 221 are respectively connected to the oil collecting box 240 and the lubricating oil chamber 260;

[0039] Please note that, please refer to Figure 1-Figure 4 , Figure 3 and Figure 4 The structure of the wheel rim assembly in other embodiments of the present invention is shown. The function of the two bearings 250 is to rotatably connect the connecting plate 220 and the wheel axle 230. In order to ensure the stability of the rotatable connection between the wheel axle 230 and the connecting plate 220, the two bearings 250 need to be arranged at intervals. In addition, when the bearings 250 are arranged at intervals, the intervals between the bearings 250 and the number of bearings 250 actually arranged can be determined according to actual conditions. In addition, when the oil collecting box 240 is arranged, the size of the oil collecting box 240 can be adjusted according to the interval between the sprocket 211 and the lubricating oil chamber 260 to ensure that the oil collecting box 240 can collect a sufficient amount of oil.

[0040] In addition, when setting the oil collecting box 240, it is necessary to set it according to the inner cavity structure of the sprocket box 210, so as to expand the area where the oil collecting box 240 can collect splashed oil by increasing the opening size of the oil collecting box 240, so as to collect a sufficient amount of oil and ensure the supply of lubricating oil to the lubricated parts. And the opening profile of the oil collecting box 240 can be a regular rectangular or circular profile, or it can be other special-shaped openings designed specifically according to the inner cavity of the sprocket box 210. Secondly, the volume of the oil collecting box 240 can be set according to the lubrication demand of the lubricating oil cavity 260, so that the amount of oil that can be stored in the oil collecting box 240 can meet the oil demand of the lubricating oil cavity 260.

[0041] Furthermore, in an embodiment of the present invention, when the wheel-side bearing 250 is set, when the inner cavity for the sprocket wheel 211 to rotate is formed by the sprocket box 210, the connecting plate 220 is connected to the outer wall of the sprocket box 210, and the oil collecting box 240 is connected to the sprocket box 210; and when the inner cavity for the sprocket wheel 211 to rotate is formed by the sprocket box 210 and the connecting plate 220, an opening that cooperates with the connecting plate 220 is provided on the box body of the sprocket box 210, and the oil collecting box 240 can be connected to the sprocket box 210 or to the connecting plate 220.

[0042] Specifically, in this embodiment, the oil collecting box 240 is connected to the sprocket box 210 .

[0043] In an embodiment of the present invention, the oil collecting box 240 can be arranged in a variety of ways. It can be connected to the sprocket box 210 or the connecting plate 220 through a detachable connecting structure, or it can be made integrally with the sprocket box 210 or the connecting plate 220, or it can be fixedly connected to the connecting plate 220 or the sprocket box 210 by a fixed connection method such as welding.

[0044] In this embodiment, the oil collecting box 240 is detachably connected to the sprocket box 210 .

[0045] Furthermore, in this embodiment, the function of the oil collecting box 240 is to collect the oil splashed by the rotation of the sprocket 211, and then guide the collected oil to the flow channel of the oil inlet passage 221. Therefore, when the oil collecting box 240 is set, an oil guide hole 241 is set at the bottom of the oil collecting box 240, and the oil guide hole 241 is used to guide the oil collected in the oil collecting box 240. Secondly, in order to allow the oil to be guided from the oil guide hole 241 under the action of gravity and flow to the oil inlet passage 221, one end of the oil inlet passage 221 located in the sprocket box 210 is located below the oil guide hole 241 along the gravity direction.

[0046] Therefore, when the sprocket 211 is in a rotating state, the oil splashed by the sprocket 211 can be collected under the action of the oil collecting box 240 and the oil inlet channel 221, and the oil can be guided into the lubricating oil chamber 260, and the two bearings 250 in the lubricating oil chamber 260 can be lubricated, thereby ensuring the lubrication effect of the bearings 250 when the wheel side assembly 200 is in a working state.

[0047] Furthermore, in order to avoid oil leakage, the wheel rim assembly 200 also includes two oil seals 270 disposed in the connecting plate 220 . The two oil seals 270 are respectively disposed at one end of the two bearings 250 away from the lubricating oil chamber 260 .

[0048] Please refer to Figure 1-Figure 4 Based on the above-mentioned wheel rim assembly 200, the connecting plate 220 of the present invention is also provided with at least one oil return channel 222, and the two ends of at least one oil return channel 222 are respectively connected to the lubricating oil chamber 260 and the sprocket box 210, and the oil in the lubricating oil chamber 260 flows from the at least one oil return channel 222 to the sprocket box 210 under the action of gravity.

[0049] By setting up the lubricating oil passage, the oil in the lubricating oil chamber 260 can be drained into the sprocket box 210, so that the oil in the wheel side assembly 200 can be circulated. In addition, through the oil return function of the oil return passage 222, it is also possible to prevent the lubricating oil chamber 260 from being excessively full, thereby avoiding the temperature in the lubricating oil chamber 260 from being too high, and further avoiding the problem of damage to the bearing 250 or the seal due to the heating of the bearing 250. Secondly, through the circulation of the oil, the lubricating oil chamber 260 can also be cleaned, avoiding the impurities in the lubricating oil chamber 260 from causing damage to the wheel side bearing 250. In addition, the setting of the oil inlet passage 221 can connect the lubricating oil chamber 260 with the sprocket box 210, and cooperate with the oil inlet passage 221 to allow the oil to circulate in the lubricating oil chamber 260 and the sprocket box 210, thereby making the pressure in the lubricating oil chamber 260 consistent with that in the sprocket box 210, thereby avoiding negative pressure in the lubricating oil chamber 260 and avoiding the flow of oil into the lubricating oil chamber 260 from being affected by the negative pressure.

[0050] In summary, it should be noted that when the oil return passage 222 is provided, the oil return passage 222 returns oil under the premise of ensuring lubrication of the bearing 250 in the lubricating oil chamber 260 .

[0051] Specifically, in this embodiment, along the gravity direction, the height of one end of at least one oil return passage 222 communicating with the lubricating oil chamber 260 is greater than the minimum height of the mating surfaces of the two bearings 250 and the connecting plate 220. That is, the oil return hole of the oil return passage 222 is higher than the lowest liquid level of the lubricating oil in the lubricating oil chamber 260, thereby ensuring the lubrication of the bearing 250.

[0052] Further, in the embodiments of the present invention, please refer to Figure 1-Figure 4 , Figure 1 and Figure 2 The structure of the wheel side assembly using the drum brake structure in the embodiment of the present invention is shown. Figure 3 and Figure 4 The structure of a wheel rim assembly using a disc brake structure in an embodiment of the present invention is shown. The wheel rim assembly 200 also includes a disc brake structure 280 or a drum brake structure 290 disposed at one end of the wheel axle 230 away from the sprocket box 210.

[0053] Based on the above-mentioned wheel side assembly 200 , an embodiment of the present invention provides a motor grader, and the motor grader includes the above-mentioned wheel side assembly 200 .

[0054] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A wheel rim assembly, Features: The wheel side assembly (200) comprises a sprocket box (210), a lubricating oil chamber (260) and an oil collecting box (240); the oil collecting box (240) is arranged in the sprocket box (210), and the oil collecting box (240) is used to collect oil splashed by the rotation of the sprocket (211) in the sprocket box (210); the oil collecting box is communicated with the lubricating oil chamber (260), and the oil in the oil collecting box (240) flows into the lubricating oil chamber (260) under the action of gravity, so as to lubricate the parts to be lubricated in the lubricating oil chamber (260); The wheel rim assembly (200) further comprises a connecting plate (220), a wheel axle (230) and two bearings (250); a portion of the wheel axle (230) located inside the connecting plate (220) is rotatably connected to the connecting plate (220) via the two bearings (250); The outer wall of the wheel shaft (230) located between the two bearings (250) and the inner wall of the connecting plate (220) together form the lubricating oil chamber (260); an oil inlet passage (221) is provided at one end of the connecting plate (220) connected to the sprocket box (210); both ends of the oil inlet passage (221) are respectively connected to the oil collecting box (240) and the lubricating oil chamber (260); the oil in the oil collecting box (240) flows from the oil inlet passage (221) to the lubricating oil chamber (260) under the action of gravity, so as to lubricate the two bearings (250); The connecting plate (220) is provided with at least one oil return passage (222), and two ends of the at least one oil return passage (222) are respectively connected to the lubricating oil chamber (260) and the sprocket box (210), and the oil in the lubricating oil chamber (260) flows from the at least one oil return passage (222) to the sprocket box (210) under the action of gravity; Along the gravity direction, the height of one end of the at least one oil return passage (222) communicating with the lubricating oil chamber (260) is greater than the minimum height of the matching surfaces of the two bearings (250) and the connecting plate (220); The oil collecting box (240) is connected to the sprocket box (210) or the connecting plate (220).

2. The wheel rim assembly according to claim 1, Features: The oil collecting box (240) and the sprocket box (210) are integrally manufactured.

3. The wheel rim assembly according to claim 1, Features: An oil guide hole (241) is provided at the bottom of the oil collecting box (240), and one end of the oil inlet passage (221) located inside the sprocket box (210) is located below the oil guide hole (241).

4. The wheel rim assembly according to claim 1, Features: The wheel rim assembly (200) further comprises two oil seals (270) disposed in the connecting plate (220), and the two oil seals (270) are respectively disposed at one end of the two bearings (250) away from the lubricating oil chamber (260).

5. The wheel rim assembly according to claim 1, Features: The wheel rim assembly (200) further comprises a disc brake structure (280) or a drum brake structure (290) arranged at one end of the wheel axle (230) away from the sprocket box (210).

6. A motor grader, Features: The motor grader comprises the wheel edge assembly (200) according to any one of claims 1-5.

Images