Modularized sun gear disengagement device of walking speed reducer for engineering machinery

Abstract

The utility model discloses a modularized sun gear disengagement device of a walking speed reducer for engineering machinery, relates to the technical field of transmission of engineering machinery, is used for solving the technical problem of tire locking caused by damage of internal parts in traditional maintenance engineering, and can realize quick decoupling and separation of a sun gear assembly when the walking speed reducer breaks down. According to the modularized sun gear disengaging device of the walking speed reducer for the engineering machinery, a spiral sleeve of a spiral sleeve locking module is matched with an end cover through trapezoidal threads, and the threads are fine threads; the anti-loosening system is provided with a clamp spring groove at the end cover, and a check ring for a hole is assembled in the clamp spring groove; the dynamic sealing assembly adopts an O-shaped sealing ring at the end cover and the spiral sleeve, and the O-shaped sealing ring is used for preventing oil leakage of a gear box in the speed reducer.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery transmission technical field especially, relates to a modularization sun gear disconnecting device of walking speed reducer for engineering machinery, and is especially suitable for the walking speed reduction mechanism maintenance operation of excavator, loader and other engineering machinery. BACKGROUND

[0002] At present, walking speed reducer is the core component of engineering machinery power transmission, and engineering machinery usually works in harsh environment and needs to bear large load.

[0003] As the key component of power transmission, walking speed reducer must have high bearing capacity and can bear various loads such as vehicle weight, working load and road impact; in order to improve the fuel economy and working efficiency of engineering machinery, walking speed reducer should have high transmission efficiency and reduce energy loss. Planetary gear mechanism bears alternating impact load for a long time; in harsh working conditions, the reducer is prone to wear, fracture, bearing damage and other failures, which may cause tire lock phenomenon.

[0004] At the same time, the traditional maintenance scheme has two defects: (1) disassembly dependence, which needs to start the hydraulic motor to drive the speed reducer to rotate for disassembly, which has safety hazards and is limited by the power conditions on site; (2) disassembly is complex, there is no hole at the end cover, and the whole disassembly is needed, which is relatively complex. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a modularization sun gear disconnecting device of walking speed reducer for engineering machinery, which solves the technical problem of tire lock caused by internal part damage in traditional maintenance engineering, and can realize quick decoupling separation of sun gear assembly when the walking speed reducer fails.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A modularization sun gear disconnecting device of walking speed reducer for engineering machinery, comprising: a spiral sleeve locking module, the spiral sleeve in the spiral sleeve locking module is matched with the end cover by trapezoidal thread, and the thread adopts fine thread;

[0008] A locking system, wherein a snap spring groove is arranged at the end cover in the locking system, and a hole stop ring is assembled in the snap spring groove;

[0009] A dynamic sealing assembly, wherein an O-shaped sealing ring is used between the end cover and the spiral sleeve in the dynamic sealing assembly, and the O-shaped sealing ring is used to prevent gear box oil leakage in the reducer.

[0010] In practical applications, when the reducer malfunctions, use snap ring pliers to open the retaining ring of the hole and use an external hex wrench to unscrew the spiral sleeve to pull out the sun gear.

[0011] Compared with existing technologies, the modular sun gear disengagement device for the travel reducer of engineering machinery described in this utility model has the following advantages:

[0012] The modular sun gear disengagement device for the travel reducer of engineering machinery provided by this utility model constructs a modular decoupling mechanism, which can realize the powerless and rapid separation of the sun gear assembly; adopts an end face O-ring sealing structure, which can ensure zero leakage operation within a temperature difference range of -40~+100℃; and establishes a maintenance-friendly architecture, which can reduce the average repair time. Attached Figure Description

[0013] Figure 1 A schematic diagram of the modular sun gear disengagement device for a traveling reducer for engineering machinery provided in this embodiment of the present invention.

[0014] Figure label:

[0015] 1-End cap; 2-Retaining ring for bore; 3-O-ring seal; 4-Deep groove ball bearing; 5-Screw sleeve; 6-Sun gear. Detailed Implementation

[0016] For ease of understanding, the modular sun gear disengagement device for the travel reducer of engineering machinery provided in this embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0017] This utility model embodiment provides a modular sun gear disengagement device for a travel reducer used in engineering machinery, such as... Figure 1 As shown, it includes: a spiral sleeve locking module, in which the spiral sleeve 5 and the end cap 1 are fitted with trapezoidal threads, and the threads are fine threads to increase sealing performance;

[0018] The anti-loosening system has a retaining ring groove at the end cap 1, and a retaining ring 2 for holes is installed in the retaining ring groove to better prevent loosening.

[0019] A dynamic sealing assembly is provided, in which an O-ring 3 is used at the end cover 1 and the spiral sleeve 5. The O-ring 3 can be used to prevent gearbox oil leakage inside the reducer, so as to better increase stability.

[0020] Compared with the prior art, the modular sun gear disengagement device for the travel reducer of engineering machinery described in this embodiment of the invention has the following advantages:

[0021] The modularized sun gear decoupling device of the walking speed reducer for engineering machinery provided by the embodiment of the utility model can construct a modularized decoupling mechanism, can realize the power-free quick separation of the sun gear assembly, adopts the end face O-shaped ring sealing structure, can ensure the zero-leakage operation in the temperature difference range of -40~+100 DEG C, can establish a maintenance-friendly architecture, and can reduce the average repair time.

[0022] In actual application, when the speed reducer is in failure, the snap spring pliers can be used to open the hole for the check ring 2, and the external hexagonal wrench can be used to unscrew the spiral sleeve 5, so as to pull out the sun gear 6, thereby realizing the quick decoupling and separation of the sun gear assembly.

[0023] The above is only a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A modular sun gear disengagement device for a travel reducer used in engineering machinery, characterized in that, include: A spiral sleeve locking module, wherein the spiral sleeve and the end cap are fitted with a trapezoidal thread, and the thread is a fine thread; An anti-loosening system, wherein a retaining ring is provided at the end cap and a retaining ring for a hole is fitted in the retaining ring groove; A dynamic sealing assembly, wherein an O-ring is used at the end cover and the spiral sleeve, and the O-ring is used to prevent gearbox oil leakage inside the reducer.

2. The modular sun gear disengagement device for the travel reducer of engineering machinery according to claim 1, characterized in that, When the reducer malfunctions, use snap ring pliers to open the retaining ring of the hole and use an external hex wrench to unscrew the screw sleeve to pull out the sun gear.

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