Forced lubrication system of planetary gearbox clutch for loader, gearbox clutch and vehicle

Abstract

The utility model discloses a forced lubrication system of a planetary gearbox clutch for a loader, the gearbox clutch and a vehicle, the forced lubrication system comprises a box body, a torque converter and a planetary mechanism, the torque converter and the planetary mechanism are arranged in the box body, and the planetary mechanism comprises a reverse gear clutch and a first gear clutch; the lubricating oil pipe is connected to an oil inlet channel of the torque converter, is connected to the reverse gear clutch and the first-gear clutch, and is used for providing lubricating oil for friction plate groups in the reverse gear clutch and the first-gear clutch. The torque converter oil inlet channel is connected into the lubricating oil pipe, holes are drilled in the box body and the friction plate isolation frame, the oil inlet pipe is connected, the clutch friction plate is forcibly sprayed and lubricated, and the defect that cooling is needed when oil is taken from a torque converter outlet in the prior art is overcome; the scheme is simple in structure, low in cost and suitable for forced lubrication of friction plates of a reverse gear clutch and a first gear clutch of a planetary hydrodynamic transmission, the lubrication effect is improved, the service life of the friction plates is prolonged, and the durability of a gearbox is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle transmission device structure, in particular to a forced lubrication system of a planetary gearbox clutch for a loader, a gearbox clutch and a vehicle. Background Art

[0002] The planetary gearbox of the loader is mainly composed of a torque converter, an overrunning clutch, a planetary gear, a reverse clutch, a first-gear clutch, a second-gear clutch, and a transfer output assembly. In the prior art, the friction plate lubrication of the reverse clutch and the first-gear clutch mainly relies on splash lubrication, which often causes early wear and deformation of the friction plate due to poor lubrication, shortens the life of the clutch, and affects the durability of the gearbox. The method of setting multiple lubricating oil outlets on the housing or the clutch input shaft and then inputting lubricating oil to the clutch and the planetary gearbox is limited by the processing technology when processing the oil channel outlet, and the oil circuit layout is single, which cannot meet the lubrication requirements of multi-speed transmissions. Utility Model Content

[0003] In view of the defects of the above-mentioned prior art, the utility model provides a forced lubrication system for a planetary gearbox clutch for a loader, a gearbox clutch and a vehicle. The forced lubrication system can be applied to a planetary hydraulic transmission to achieve forced lubrication of the clutch friction plate.

[0004] As a first aspect of the utility model, there is provided a forced lubrication system for a planetary gearbox clutch for a loader, comprising a housing, a torque converter and a planetary mechanism disposed in the housing, wherein the planetary mechanism comprises a reverse clutch and a first gear clutch;

[0005] It also includes a lubricating oil pipe connected to the oil inlet passage of the torque converter, the lubricating oil pipe is connected to the reverse clutch and the first gear clutch, and provides lubricating oil to the friction plate group in the reverse clutch and the first gear clutch.

[0006] As a typical embodiment, the first gear clutch includes a first gear friction plate group, and the reverse gear clutch includes a reverse gear friction plate group. A friction plate isolation frame is provided on the housing, holes are drilled on the housing and the friction plate isolation frame respectively, and isolation frame oil channels are provided. The isolation frame oil channels are connected to the lubrication oil channels; the isolation frame oil channels are respectively connected to the first gear oil channel and the reverse gear oil channel leading to the first gear friction plate group and the reverse gear friction plate group, respectively lubricate the first gear and reverse gear friction plates, and force spray lubrication on the clutch friction plates.

[0007] As a typical embodiment, the loader planetary gearbox further includes an overrunning clutch, and the driving mechanism is connected to the overrunning clutch through a torque converter, thereby driving the planetary mechanism.

[0008] Furthermore, the planetary mechanism includes a reverse sun gear, a reverse planetary carrier, a reverse clutch, a reverse gear ring gear, a first gear clutch, a first gear ring gear, a first gear planetary carrier, a second gear clutch, an output gear pair and a friction plate isolation frame; a plurality of reverse gear planetary gears are arranged on the reverse gear planetary carrier, the reverse gear planetary gears are meshed with the reverse sun gear on the radial inner side and with the reverse gear ring gear on the radial outer side, the reverse gear planetary gears are rotatably supported on the planetary gear shaft through bearings, and the planetary gear shaft is fixed to the reverse gear planetary carrier; a plurality of first gear planetary gears are arranged on the first gear planetary carrier, the first gear planetary gears are meshed with the first gear ring gear on the radial outer side; the friction plate of the first gear clutch and the friction plate of the reverse gear clutch are separated by the friction plate isolation frame.

[0009] As a second aspect of the present application, a transmission clutch is provided, comprising the forced lubrication system.

[0010] As a third aspect of the present application, there is provided a vehicle, comprising the forced lubrication system.

[0011] Furthermore, the vehicle is a loader.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. This application adopts the method of connecting the lubricating oil pipe through the oil inlet channel of the torque converter, drilling holes on the housing and the friction plate isolation frame, connecting the lubricating oil pipe, and forcibly spraying lubrication on the clutch friction plate, thus avoiding the disadvantage of taking oil from the torque converter outlet and cooling it in the prior art;

[0014] 2. This solution has a simple structure and low cost, and can be applied to the forced lubrication of the reverse clutch and first gear clutch friction plates of the planetary hydraulic transmission, thereby improving the lubrication effect, extending the service life of the friction plates, and improving the durability of the transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0016] Figure 1 A schematic diagram of the internal transmission relationship of the planetary gearbox of the loader provided by the utility model;

[0017] Figure 2 A schematic diagram of the external oil circuit of the planetary gearbox of a loader provided by the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the structure of the forced lubrication system of the planetary gearbox of the loader.

[0019] Among them, 1-torque converter, 2-overrunning clutch, 3-reverse gear planetary carrier, 4-reverse gear clutch, 5-reverse gear ring, 6-first gear clutch, 7-first gear ring, 8-first gear planetary carrier, 9-second gear clutch, 10-output gear pair, 11-box, 12-friction plate isolation frame;

[0020] 101-torque converter oil inlet passage, 102-lubricating oil pipe, 103-spacer oil passage, 104-first gear oil passage, 105-reverse gear oil passage;

[0021] 401-reverse gear friction plate group, 601-first gear friction plate group. DETAILED DESCRIPTION

[0022] It should be noted that the following detailed descriptions are exemplary and are intended to provide further description of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Embodiment 1, a forced lubrication system for a planetary gearbox clutch for a loader

[0025] In a typical implementation of the present invention, Figure 1As shown, the loader planetary gearbox includes a housing 11 and a torque converter 1, an overrunning clutch 2, and a planetary mechanism arranged in the housing 11; the driving mechanism is connected to the overrunning clutch 2 through the torque converter 1, thereby driving the planetary mechanism; the planetary mechanism includes a reverse sun gear, a reverse planetary carrier 3, a reverse clutch 4, a reverse gear ring 5, a first gear clutch 6, a first gear ring 7, a first gear planetary carrier 8, a second gear clutch 9, an output gear pair 10 and a friction plate isolation frame 12. The torque converter 1 is connected to the reverse gear planetary carrier 3 through the overrunning clutch 2. The reverse gear planetary carrier 3 is provided with a plurality of reverse gear planetary gears. The reverse gear planetary gears mesh with the reverse gear sun gear on the radial inner side and mesh with the reverse gear ring gear 5 on the radial outer side. The reverse gear planetary gears are rotatably supported on the planetary gear shaft through bearings. The planetary gear shaft is fixed to the reverse gear planetary carrier 3. The first gear planetary carrier 8 is provided with a plurality of first gear planetary gears. The first gear planetary gears mesh with the first gear ring gear 5 on the radial outer side. The friction plates of the first gear clutch 6 and the friction plates of the reverse gear clutch 4 are separated by a friction plate isolation frame 12. The first gear clutch 6 includes a first gear friction plate group 601, and the reverse gear clutch 4 includes a reverse gear friction plate group 401. The first gear clutch and the reverse gear clutch are not modified, and their structures adopt the conventional structures in the art. If the reverse gear clutch is engaged and the reverse gear planetary carrier is locked, the power is output through the reverse gear ring gear, which is reverse gear; if the first gear clutch is engaged and the first gear ring gear is locked, the power is output through the first gear planetary carrier, which is first gear; if the second gear clutch is engaged, the output gear pair is directly driven, which is second gear.

[0026] The forced lubrication system is connected to the lubricating oil pipe 102 by the torque converter oil inlet channel 101, and holes are drilled on the box 11 and the friction plate isolation frame 12 to set the isolation frame oil channel 103, which is connected to the lubricating oil pipe 102 to force the clutch friction plate to be sprayed and lubricated. Figure 2 and Figure 3 .

[0027] The oil pressure of the torque converter oil inlet passage is 5 bar, and it is generally blocked with a plug bolt. In this solution, the plug bolt is removed and connected with a joint bolt connected to the lubricating oil pipe to connect the lubricating oil to the oil pipe.

[0028] The housing and the friction plate isolation frame are respectively drilled at corresponding positions, and the lubricating oil enters the isolation frame oil passage 103 through the housing. The isolation frame oil passage 103 is respectively connected to the first gear oil passage 104 and the reverse gear oil passage 105 leading to the first gear friction plate group 601 and the reverse gear friction plate group 401, respectively, to lubricate the first gear and reverse gear friction plates, Figure 3 .

[0029] The scheme is simple in structure and low in cost, and can be applied to the forced lubrication of the reverse and first gear friction plate groups in a planetary hydraulic transmission. The lubrication of the second gear friction plate group adopts another oil circuit, which will not be explained here.

[0030] Embodiment 2, a clutch

[0031] A forced lubrication system for a planetary gearbox clutch for a loader provided in Example 1.

[0032] Embodiment 3, a vehicle

[0033] A forced lubrication system for a planetary gearbox clutch for a loader provided in Example 1.

[0034] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A forced lubrication system for a planetary gearbox clutch for a loader, comprising a housing, a torque converter and a planetary mechanism arranged in the housing, wherein the planetary mechanism comprises a reverse clutch and a first gear clutch; characterized in that: Also included is a lubricating oil pipe connected to the oil inlet passage of the torque converter, the lubricating oil pipe is connected to the reverse clutch and the first gear clutch, and provides lubricating oil to the friction plate groups in the reverse clutch and the first gear clutch; The first gear clutch includes a first gear friction plate group, and the reverse gear clutch includes a reverse gear friction plate group. A friction plate isolation frame is arranged on the housing, holes are drilled on the housing and the friction plate isolation frame respectively, and isolation frame oil channels are arranged. The isolation frame oil channels are connected to the lubricating oil channels.

2. The forced lubrication system according to claim 1, characterized in that: The isolation frame oil passage is connected to the first gear oil passage and the reverse gear oil passage leading to the first gear friction plate group and the reverse gear friction plate group respectively.

3. The forced lubrication system according to claim 1, characterized in that: The loader planetary gearbox further comprises an overrunning clutch, and the driving mechanism is connected to the overrunning clutch via a torque converter, thereby driving the planetary mechanism.

4. The forced lubrication system according to claim 1, characterized in that: The planetary mechanism includes a reverse sun gear, a reverse planetary carrier, a reverse clutch, a reverse gear ring gear, a first gear clutch, a first gear ring gear, a first gear planetary carrier, a second gear clutch, an output gear pair and a friction plate isolation frame; a plurality of reverse planetary gears are arranged on the reverse planetary carrier, the reverse planetary gears mesh with the reverse sun gear on the radial inner side and mesh with the reverse gear ring gear on the radial outer side, the reverse planetary gears are rotatably supported on the planetary gear shaft through bearings, and the planetary gear shaft is fixed to the reverse planetary carrier; a plurality of first gear planetary gears are arranged on the first gear planetary carrier, the first gear planetary gears mesh with the first gear ring gear on the radial outer side; the friction plate of the first gear clutch and the friction plate of the reverse gear clutch are separated by the friction plate isolation frame.

5. A gearbox clutch, characterized in that: A forced lubrication system comprising any one of claims 1 to 4.

6. A vehicle, characterized in that: A forced lubrication system comprising any one of claims 1 to 4.

7. The vehicle according to claim 6, characterized in that The vehicle is a loader.

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