一种轮式挖掘机液压行走结构

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By introducing a synchronizer and a driven gear that is rolled to the output shaft into the hydraulic travel structure of a wheeled excavator, and utilizing the tapered fit of the synchronizer ring and the gear sleeve, as well as the internal and external spline structure, the problems of shifting jamming and noise are solved, and the service life of the transmission box is extended.

CN224514310UActive Publication Date: 2026-07-17FUJIAN CHANGTOOTH TRANSMISSION SPEED CHANGE MASCH CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: FUJIAN CHANGTOOTH TRANSMISSION SPEED CHANGE MASCH CO LTD
Filing Date: 2025-07-16
Publication Date: 2026-07-17

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Abstract

本实用新型公开了这样一种轮式挖掘机液压行走结构，为解决已有轮挖液压行走传动结构存在的易造成卡涩、不平顺，产生噪音，同时还会加速传动箱磨损，影响设备使用寿命的问题，本实用新型采取换挡机构为同步器（7），与输出轴（9）滚动连接的所述被动齿轮（5）一端与同步器（7）一端传动连接，同步器（7）另一端与套装在输出轴（9）上的齿轮（8）一端传动连接，同步器（7）上的齿座（14）与输出轴（9）传动连接。

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Claims

1. A hydraulic travel structure for a wheeled excavator, comprising a transmission box, an input shaft, a spline sleeve, a hydraulic motor, and a hydraulic motor mount. The hydraulic motor is connected to the transmission box via the hydraulic motor mount. The rotating shaft of the hydraulic motor is connected to one end of the input shaft mounted on the transmission box via a spline sleeve disposed within the hydraulic motor mount. The input shaft within the transmission box meshes with a driven gear mounted on an output shaft via a drive gear and an intermediate gear. The driven gear is connected to the output shaft via a shifting mechanism. The structure is characterized by: The shifting mechanism is a synchronizer (7). One end of the passive gear (5) that is rolled to the output shaft (9) is connected to one end of the synchronizer (7). The other end of the synchronizer (7) is connected to one end of the gear (8) mounted on the output shaft (9). The gear seat (14) on the synchronizer (7) is connected to the output shaft (9).

2. The hydraulic travel structure of a wheel excavator according to claim 1, characterized by: A frustum I (17) is provided at one end of the driven gear (5) near the synchronizer (7) and can taper with the inner surface of the synchronizer ring I (15) on the synchronizer (7). A pinion I (16) is also provided on the driven gear (5) between the frustum I (17) and the driven gear (5) and can mesh with the gear sleeve (11) on the synchronizer (7).

3. The hydraulic travel system of a wheel excavator according to claim 1, characterized in that: A frustum II (18) is provided at one end of the gear (8) near the synchronizer (7) and can taper with the inner surface of the synchronizing ring II (12) on the synchronizer (7). A small gear II (13) is also provided on the gear (8) between the frustum II (18) and the gear (8) and can mesh with the gear sleeve (11) on the synchronizer (7).

4. The hydraulic travel system of a wheel excavator according to claim 1, characterized in that: An external spline is provided on the output shaft (9) to engage with the synchronizer (7) gear seat (14).

5. The hydraulic travel system of a wheel excavator according to claim 1 or 4, characterized in that: An internal spline that can mate with the output shaft (9) is provided on the inner surface of the gear seat (14).