Main speed reducer with oil baffle plate structure, drive axle and crane

Abstract

The utility model discloses a main speed reducer with an oil baffle plate structure, a drive axle and a crane. The main speed reducer comprises a driving bevel gear, a driven bevel gear and an oil baffle plate, the driving bevel gear and the driven bevel gear are rotationally supported in the axle housing after being meshed with each other; the oil baffle plate is fixed together with the axle housing, wraps the lower parts of the driving bevel gear and the driven bevel gear and is used for blocking most or all gear oil on the outer side of the oil baffle plate; the oil baffle plate is in clearance fit with the driving bevel gear and the driven bevel gear and does not interfere with rotation of the driving bevel gear and the driven bevel gear. According to the main speed reducer with the oil baffle plate structure, the oil baffle plates are arranged around the driving bevel gear and the driven bevel gear, the oil stirring loss of a drive axle can be effectively reduced through experimental verification, and the transmission efficiency of the drive axle is improved.

Description

Technical Field

[0001] The utility model relates to a main reducer with an oil baffle structure, belonging to the technical field of drive axles. Background Art

[0002] Cranes excel at high off-road performance and high speeds, and are widely used in various industries, including oilfields and wind power. The disconnecting drive axle is a key component of cranes, serving as the power output terminal for the entire drive system within the chassis. Because all-terrain cranes offer both high load capacity and high speed, bench testing of the drive axle has revealed high main reduction gear temperatures, churning losses, and low transmission efficiency. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a main reducer with an oil baffle structure, which can reduce the agitation of the gear oil, thereby reducing the oil agitation loss and improving the transmission efficiency of the entire transmission system.

[0004] The utility model is implemented according to the following technical solutions:

[0005] In a first aspect, the present invention provides a main reducer with an oil baffle structure, comprising:

[0006] The driving bevel gear and the driven bevel gear are meshed with each other and rotated and supported in the axle housing;

[0007] An oil baffle is fixed to the bridge housing and wraps the lower parts of the driving bevel gear and the driven bevel gear to block most or all of the gear oil outside the oil baffle; the oil baffle is clearance-fitted with the driving and driven bevel gears to prevent interference with the rotation of the driving and driven bevel gears.

[0008] In some embodiments, the oil baffle is an integral structure, which is mainly composed of a main bevel gear guard plate and a secondary bevel gear guard plate that are vertically cross-welded or integrally cast.

[0009] In some embodiments, the slave bevel gear guard plate is a C-shaped groove structure composed of an inner arc plate, an outer arc plate I and a bottom arc plate I, and the lower part of the driven bevel gear is located in the slave bevel gear guard plate; the main bevel gear guard plate is composed of an outer arc plate II and a bottom arc plate II, the inner side surface of the bottom arc plate II is fitted together with the bridge housing, and the lower part of the active bevel gear is located in the main bevel gear guard plate.

[0010] In some embodiments, the outer arc plate I is provided with a right-angle notch at the joint with the outer arc plate II and the bottom arc plate II, and the bottom arc plate I is provided with an inward-concave arc notch at the joint with the bottom arc plate II; the bottom arc plate II is provided with an irregular notch at the joint with the bottom arc plate I and the outer arc plate I.

[0011] In some embodiments, a connecting plate is fixed on the top of the joint between the bottom arc plate I and the bottom arc plate II, and an upwardly extending mounting plate I with a through hole is fixed on the connecting plate, and the mounting plate I is fixed to the bridge housing by fasteners.

[0012] In some embodiments, a downwardly extending mounting plate II with a through hole is fixed to the inner periphery of the radial outer circumferential surface of the bottom arc plate II, and the mounting plate II is fixed to the bridge housing by fasteners.

[0013] In some embodiments, a mounting plate III extending outward and having a through hole is fixed to the outer side of each of the inner and outer arc plates I in the bevel gear guard, and the two mounting plates III are fixed to the bridge housing by fasteners.

[0014] In some embodiments, an oil inlet hole is respectively provided at the center position of the lowest area of ​​the bottom arc plate I and the bottom arc plate II for admitting a small amount of gear oil to lubricate the master and slave bevel gears.

[0015] In a second aspect, the utility model provides a drive axle, comprising the above-mentioned main reducer with an oil baffle structure.

[0016] In a third aspect, the utility model provides a crane, comprising the above-mentioned main reducer with the oil baffle structure; or, comprising the above-mentioned drive axle.

[0017] Beneficial effects of the utility model:

[0018] The utility model provides a main reducer with an oil baffle structure. The oil baffle is arranged around the driving bevel gear and the driven bevel gear. Experimental verification shows that the oil stirring loss of the drive axle can be effectively reduced and the transmission efficiency of the drive axle can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are part of this utility model and are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be derived from these drawings without inventive effort.

[0020] In the attached figure:

[0021] Figure 1 The overall schematic diagram of the main reducer with oil baffle structure of the utility model Figure 1 ;

[0022] Figure 2 The overall schematic diagram of the main reducer with oil baffle structure of the utility model Figure 2 ;

[0023] Figure 3 The overall schematic diagram of the oil baffle of the utility model Figure 1 ;

[0024] Figure 4 The overall schematic diagram of the oil baffle of the utility model Figure 2 ;

[0025] Figure 5 The overall schematic diagram of the oil baffle of the utility model Figure 3 ;

[0026] Figure 6 The overall schematic diagram of the oil baffle of the utility model Figure 4 ;

[0027] Figure 7 Schematic diagram of the main bevel gear guard of the present invention (a is a schematic diagram from perspective one, b is a schematic diagram from perspective two);

[0028] Figure 8 It is an overall schematic diagram of the driven bevel gear of the utility model.

[0029] Figure symbols: 1-main bevel gear guard plate, 2-slave bevel gear guard plate, 3-driving bevel gear, 4-driven bevel gear, 5-bridge housing;

[0030] 11-outer arc plate II, 12-bottom arc plate II, 21-inner arc plate, 22-outer arc plate I, 23-bottom arc plate I, 31-right angle notch, 32-inner concave arc notch, 33-special-shaped notch, 41-connecting plate, 42-mounting plate I, 43-mounting plate II, 44-mounting plate III, 51-oil inlet hole

[0031] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0034] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0035] like Figure 1 、 Figure 2 As shown, a main reducer with an oil baffle structure includes a driving bevel gear 3, a driven bevel gear 4 and an oil baffle; the driving bevel gear 3 and the driven bevel gear 4 are meshed with each other and rotatably supported in a bridge housing 5; the oil baffle is fixed to the bridge housing 5 and wraps the lower parts of the driving bevel gear 3 and the driven bevel gear 4 to block most or all of the gear oil on the outside of the oil baffle; the oil baffle is clearance-fitted with the driving and driven bevel gears 3 and 4 to prevent interference with the rotation of the driving and driven bevel gears 3 and 4.

[0036] The above-mentioned oil baffle is further described below.

[0037] like Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown, the oil baffle is an integral structure, which strengthens the overall rigidity. It is mainly composed of a main bevel gear guard plate 1 and a secondary bevel gear guard plate 2 that are vertically cross-welded or integrally cast.

[0038] In the preferred solution, the oil baffle is welded by the main bevel gear guard plate 1 and the secondary bevel gear guard plate 2. The axial width of the oil baffle is 10 mm larger than the gear width, a 5 mm gap is retained on one side, and the upper end surface of the oil baffle is 10 mm higher than the oil level.

[0039] The following is a further description of the secondary bevel gear guard and the primary bevel gear guard.

[0040] like Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 As shown, the slave bevel gear guard plate 2 is a C-shaped groove structure consisting of an inner arc plate 21, an outer arc plate I 22 and a bottom arc plate I 23. The lower part of the driven bevel gear 4 is located in the slave bevel gear guard plate 2; the main bevel gear guard plate 1 is composed of an outer arc plate II 11 and a bottom arc plate II 12. The inner side surface of the bottom arc plate II 12 is fitted together with the bridge housing 5, and the lower part of the driving bevel gear 3 is located in the main bevel gear guard plate 1.

[0041] For further solutions, please refer to Figure 3-Figure 8 As shown, the outer arc upright plate I22 is provided with a right-angle notch 31 at the joint with the outer arc upright plate II11 and the bottom arc plate II12, and the bottom arc plate I22 is provided with an inwardly concave arc notch 32 at the joint with the bottom arc plate II12; the bottom arc plate II12 is provided with a special-shaped notch 33 at the joint with the bottom arc plate I23 and the outer arc upright plate I22.

[0042] The following further describes the solution of connecting the oil baffle to the bridge housing.

[0043] like Figures 1-8 As shown, a connecting plate 41 is fixed on the top of the joint between the bottom arc plate I23 and the bottom arc plate II12, and a mounting plate I42 extending upward and having a through hole is fixed on the connecting plate 41. The mounting plate I42 is fixed to the bridge housing 5 by bolts.

[0044] It should be noted that the through hole on the mounting plate I 42 is an elongated hole, and its mounting position can be fine-tuned when the oil baffle is installed.

[0045] like Figures 1-8 As shown, a downwardly extending mounting plate II 43 with through holes is fixed to the inner periphery of the radially outer circumference of the bottom arc plate II 12. Mounting plate II 43 is bolted to the axle housing 5. An outwardly extending mounting plate III 44 with through holes is fixed to the outer sides of each of the inner arc plate 21 and the outer arc plate I 22 of the bevel gear guard 2. Both mounting plates III 44 are bolted to the axle housing 5.

[0046] It should be noted that the through hole of the mounting plate III 44 on the inner arc-shaped vertical plate 21 is an elongated hole, and its mounting position can be fine-tuned when the oil baffle is installed.

[0047] Further solutions, such as Figures 1-8 As shown, an oil inlet hole 51 for entering a small amount of gear oil to lubricate the driving and driven bevel gears 3 and 4 is provided at the center position of the lowest area of ​​the bottom arc plate I 23 and the bottom arc plate II 12.

[0048] It should be noted that the diameter of the oil inlet hole 51 is 8.5 mm, which should not be too large, otherwise the oil inlet volume of the entire oil baffle cavity will be very large, which will only increase the oil stirring loss.

[0049] In summary, the utility model provides a main reducer with an oil baffle structure, wherein the oil baffle is composed of a main bevel gear guard plate and a slave bevel gear guard plate that are vertically cross-welded. The main bevel gear guard plate and the slave bevel gear guard plate are respectively provided with an oil inlet hole, and the oil inlet hole is set to a small diameter. When the drive axle rotates, most of the gear oil inside the oil baffle is thrown out. Due to the high rotation speed of the main and driven bevel gears, under the action of centrifugal force, the lubricating oil on the outside of the oil baffle cannot flow into the oil baffle. At this time, only a small amount of gear oil enters the oil baffle through the two oil inlet holes. Since the diameters of the two oil inlet holes are small, the gear oil entering can meet the lubrication of the active bevel gear and the driven bevel gear without generating excess oil stirring loss. Moreover, the main bevel gear guard plate fits together with the bridge housing to prevent excess gear oil from entering the oil baffle in all directions, which more effectively improves the transmission efficiency of the transmission system.

[0050] The drive axle provided by the present invention is described below. The drive axle described below and the main reducer with an oil baffle structure described above can be referred to in correspondence with each other.

[0051] The utility model provides a drive axle, which may include a main reducer with an oil baffle structure as described in any one of the above embodiments.

[0052] The beneficial effects achieved by the drive axle provided by the present invention are consistent with the beneficial effects achieved by the main reducer with an oil baffle structure provided by the present invention, and will not be described in detail here.

[0053] The crane provided by the present invention is described below. The crane described below and the drive axle described above can be referred to in correspondence with each other.

[0054] The utility model provides a crane, which may include the drive axle as described in any one of the above embodiments.

[0055] The beneficial effects achieved by the crane provided by the present invention are consistent with the beneficial effects achieved by the drive axle provided by the present invention, and will not be described in detail here.

[0056] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0057] Furthermore, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are also intended to fall within the scope of protection of the present invention and form different embodiments. For example, in the above embodiments, those skilled in the art will be able to use them in combination based on the known technical solutions and the technical problems to be solved by this application.

[0058] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments using the above-mentioned technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A main reducer with an oil baffle structure, characterized in that: include: The driving bevel gear and the driven bevel gear are meshed with each other and are supported in rotation in the axle housing; An oil baffle is fixed to the bridge housing and wraps the lower parts of the driving bevel gear and the driven bevel gear to block most or all of the gear oil outside the oil baffle; the oil baffle is clearance-fitted with the driving and driven bevel gears to prevent interference with the rotation of the driving and driven bevel gears.

2. The main reducer with an oil baffle structure according to claim 1, characterized in that: The oil baffle is an integral structure, which is mainly composed of a main bevel gear guard plate and a secondary bevel gear guard plate that are vertically cross-welded or integrally cast.

3. The main reducer with an oil baffle structure according to claim 2, characterized in that: The following bevel gear guard plate is a C-shaped groove structure composed of an inner arc plate, an outer arc plate I and a bottom arc plate I. The lower part of the driven bevel gear is located in the following bevel gear guard plate; The main bevel gear guard plate is composed of an outer arc plate II and a bottom arc plate II. The inner side surface of the bottom arc plate II is fitted together with the bridge housing. The lower part of the active bevel gear is located in the main bevel gear guard plate.

4. The main reducer with an oil baffle structure according to claim 3, characterized in that: The outer arc plate I is provided with a right-angle notch at the joint with the outer arc plate II and the bottom arc plate II, and the bottom arc plate I is provided with an inwardly concave arc notch at the joint with the bottom arc plate II; The bottom arc plate II is provided with a special-shaped notch at the joint between the bottom arc plate I and the outer arc vertical plate I.

5. The main reducer with an oil baffle structure according to claim 3, characterized in that: A connecting plate is fixed on the top of the joint between the bottom arc plate I and the bottom arc plate II. A mounting plate I extending upward and having a through hole is fixed on the connecting plate. The mounting plate I is fixed to the bridge housing by fasteners.

6. The main reducer with an oil baffle structure according to claim 3, characterized in that: A mounting plate II extending downward and having a through hole is fixed to the inner periphery of the radial outer circumferential surface of the bottom arc plate II, and the mounting plate II is fixed to the bridge housing by fasteners.

7. The main reducer with an oil baffle structure according to claim 3, characterized in that: A mounting plate III extending outward and having a through hole is fixed to the outer side of each of the inner and outer arc upright plates I in the bevel gear guard, and the two mounting plates III are fixed to the bridge housing by fasteners.

8. The main reducer with an oil baffle structure according to claim 3, characterized in that: An oil inlet hole for admitting a small amount of gear oil to lubricate the master and slave bevel gears is provided at the center position of the lowest area of ​​the bottom arc plate I and the bottom arc plate II.

9. A drive axle, characterized in that: A main reducer with an oil baffle structure comprising the structure described in any one of claims 1 to 8.

10. A crane, characterized in that: A main reducer with an oil baffle structure comprising any one of claims 1 to 8; or a drive axle comprising the drive axle according to claim 9.

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